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| author | David S. Miller <davem@davemloft.net> | 2017-12-20 20:33:03 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-12-20 20:33:03 +0100 |
| commit | a943e8bc058977663ba1e42389d4f5643cf2ae9e (patch) | |
| tree | ae8ba5ef07e3edec4d6626137b2ebcf1c6329fd7 /net/batman-adv | |
| parent | Merge branch 'replace-tcp_set_state-tracepoint-with-inet_sock_set_state' (diff) | |
| parent | batman-adv: Add kernel-doc to externally visible functions (diff) | |
| download | linux-a943e8bc058977663ba1e42389d4f5643cf2ae9e.tar.xz linux-a943e8bc058977663ba1e42389d4f5643cf2ae9e.zip | |
Merge tag 'batadv-next-for-davem-20171220' of git://git.open-mesh.org/linux-merge
Simon Wunderlich says:
====================
This feature/cleanup patchset includes the following patches:
- bump version strings, by Simon Wunderlich
- de-inline hash functions to save memory footprint, by Denys Vlasenko
- Add License information to various files, by Sven Eckelmann (3 patches)
- Change batman_adv.h from ISC to MIT, by Sven Eckelmann
- Improve various includes, by Sven Eckelmann (5 patches)
- Lots of kernel-doc work by Sven Eckelmann (8 patches)
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/batman-adv')
60 files changed, 2833 insertions, 1343 deletions
diff --git a/net/batman-adv/Kconfig b/net/batman-adv/Kconfig index b73b96a2854b..c44f6515be5e 100644 --- a/net/batman-adv/Kconfig +++ b/net/batman-adv/Kconfig @@ -1,3 +1,20 @@ +# SPDX-License-Identifier: GPL-2.0 +# Copyright (C) 2007-2017 B.A.T.M.A.N. contributors: +# +# Marek Lindner, Simon Wunderlich +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of version 2 of the GNU General Public +# License as published by the Free Software Foundation. +# +# This program is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, see <http://www.gnu.org/licenses/>. + # # B.A.T.M.A.N meshing protocol # diff --git a/net/batman-adv/Makefile b/net/batman-adv/Makefile index 915987bc6d29..022f6e77307b 100644 --- a/net/batman-adv/Makefile +++ b/net/batman-adv/Makefile @@ -1,4 +1,4 @@ -# +# SPDX-License-Identifier: GPL-2.0 # Copyright (C) 2007-2017 B.A.T.M.A.N. contributors: # # Marek Lindner, Simon Wunderlich diff --git a/net/batman-adv/bat_algo.c b/net/batman-adv/bat_algo.c index 44fd073b7546..80c72c7d3cad 100644 --- a/net/batman-adv/bat_algo.c +++ b/net/batman-adv/bat_algo.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2007-2017 B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich @@ -37,7 +38,8 @@ char batadv_routing_algo[20] = "BATMAN_IV"; static struct hlist_head batadv_algo_list; /** - * batadv_algo_init - Initialize batman-adv algorithm management data structures + * batadv_algo_init() - Initialize batman-adv algorithm management data + * structures */ void batadv_algo_init(void) { @@ -59,6 +61,12 @@ static struct batadv_algo_ops *batadv_algo_get(char *name) return bat_algo_ops; } +/** + * batadv_algo_register() - Register callbacks for a mesh algorithm + * @bat_algo_ops: mesh algorithm callbacks to add + * + * Return: 0 on success or negative error number in case of failure + */ int batadv_algo_register(struct batadv_algo_ops *bat_algo_ops) { struct batadv_algo_ops *bat_algo_ops_tmp; @@ -88,6 +96,19 @@ int batadv_algo_register(struct batadv_algo_ops *bat_algo_ops) return 0; } +/** + * batadv_algo_select() - Select algorithm of soft interface + * @bat_priv: the bat priv with all the soft interface information + * @name: name of the algorithm to select + * + * The algorithm callbacks for the soft interface will be set when the algorithm + * with the correct name was found. Any previous selected algorithm will not be + * deinitialized and the new selected algorithm will also not be initialized. + * It is therefore not allowed to call batadv_algo_select outside the creation + * function of the soft interface. + * + * Return: 0 on success or negative error number in case of failure + */ int batadv_algo_select(struct batadv_priv *bat_priv, char *name) { struct batadv_algo_ops *bat_algo_ops; @@ -102,6 +123,14 @@ int batadv_algo_select(struct batadv_priv *bat_priv, char *name) } #ifdef CONFIG_BATMAN_ADV_DEBUGFS + +/** + * batadv_algo_seq_print_text() - Print the supported algorithms in a seq file + * @seq: seq file to print on + * @offset: not used + * + * Return: always 0 + */ int batadv_algo_seq_print_text(struct seq_file *seq, void *offset) { struct batadv_algo_ops *bat_algo_ops; @@ -148,7 +177,7 @@ module_param_cb(routing_algo, &batadv_param_ops_ra, &batadv_param_string_ra, 0644); /** - * batadv_algo_dump_entry - fill in information about one supported routing + * batadv_algo_dump_entry() - fill in information about one supported routing * algorithm * @msg: netlink message to be sent back * @portid: Port to reply to @@ -179,7 +208,7 @@ static int batadv_algo_dump_entry(struct sk_buff *msg, u32 portid, u32 seq, } /** - * batadv_algo_dump - fill in information about supported routing + * batadv_algo_dump() - fill in information about supported routing * algorithms * @msg: netlink message to be sent back * @cb: Parameters to the netlink request diff --git a/net/batman-adv/bat_algo.h b/net/batman-adv/bat_algo.h index 29f6312f9bf1..029221615ba3 100644 --- a/net/batman-adv/bat_algo.h +++ b/net/batman-adv/bat_algo.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2011-2017 B.A.T.M.A.N. contributors: * * Marek Lindner, Linus Lüssing diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index bbe8414b6ee7..84c36430c25a 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2007-2017 B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich @@ -26,7 +27,7 @@ #include <linux/cache.h> #include <linux/errno.h> #include <linux/etherdevice.h> -#include <linux/fs.h> +#include <linux/gfp.h> #include <linux/if_ether.h> #include <linux/init.h> #include <linux/jiffies.h> @@ -72,21 +73,28 @@ static void batadv_iv_send_outstanding_bat_ogm_packet(struct work_struct *work); /** * enum batadv_dup_status - duplicate status - * @BATADV_NO_DUP: the packet is no duplicate - * @BATADV_ORIG_DUP: OGM is a duplicate in the originator (but not for the - * neighbor) - * @BATADV_NEIGH_DUP: OGM is a duplicate for the neighbor - * @BATADV_PROTECTED: originator is currently protected (after reboot) */ enum batadv_dup_status { + /** @BATADV_NO_DUP: the packet is no duplicate */ BATADV_NO_DUP = 0, + + /** + * @BATADV_ORIG_DUP: OGM is a duplicate in the originator (but not for + * the neighbor) + */ BATADV_ORIG_DUP, + + /** @BATADV_NEIGH_DUP: OGM is a duplicate for the neighbor */ BATADV_NEIGH_DUP, + + /** + * @BATADV_PROTECTED: originator is currently protected (after reboot) + */ BATADV_PROTECTED, }; /** - * batadv_ring_buffer_set - update the ring buffer with the given value + * batadv_ring_buffer_set() - update the ring buffer with the given value * @lq_recv: pointer to the ring buffer * @lq_index: index to store the value at * @value: value to store in the ring buffer @@ -98,7 +106,7 @@ static void batadv_ring_buffer_set(u8 lq_recv[], u8 *lq_index, u8 value) } /** - * batadv_ring_buffer_avg - compute the average of all non-zero values stored + * batadv_ring_buffer_avg() - compute the average of all non-zero values stored * in the given ring buffer * @lq_recv: pointer to the ring buffer * @@ -130,7 +138,7 @@ static u8 batadv_ring_buffer_avg(const u8 lq_recv[]) } /** - * batadv_iv_ogm_orig_free - free the private resources allocated for this + * batadv_iv_ogm_orig_free() - free the private resources allocated for this * orig_node * @orig_node: the orig_node for which the resources have to be free'd */ @@ -141,8 +149,8 @@ static void batadv_iv_ogm_orig_free(struct batadv_orig_node *orig_node) } /** - * batadv_iv_ogm_orig_add_if - change the private structures of the orig_node to - * include the new hard-interface + * batadv_iv_ogm_orig_add_if() - change the private structures of the orig_node + * to include the new hard-interface * @orig_node: the orig_node that has to be changed * @max_if_num: the current amount of interfaces * @@ -186,7 +194,7 @@ unlock: } /** - * batadv_iv_ogm_drop_bcast_own_entry - drop section of bcast_own + * batadv_iv_ogm_drop_bcast_own_entry() - drop section of bcast_own * @orig_node: the orig_node that has to be changed * @max_if_num: the current amount of interfaces * @del_if_num: the index of the interface being removed @@ -224,7 +232,7 @@ batadv_iv_ogm_drop_bcast_own_entry(struct batadv_orig_node *orig_node, } /** - * batadv_iv_ogm_drop_bcast_own_sum_entry - drop section of bcast_own_sum + * batadv_iv_ogm_drop_bcast_own_sum_entry() - drop section of bcast_own_sum * @orig_node: the orig_node that has to be changed * @max_if_num: the current amount of interfaces * @del_if_num: the index of the interface being removed @@ -259,8 +267,8 @@ batadv_iv_ogm_drop_bcast_own_sum_entry(struct batadv_orig_node *orig_node, } /** - * batadv_iv_ogm_orig_del_if - change the private structures of the orig_node to - * exclude the removed interface + * batadv_iv_ogm_orig_del_if() - change the private structures of the orig_node + * to exclude the removed interface * @orig_node: the orig_node that has to be changed * @max_if_num: the current amount of interfaces * @del_if_num: the index of the interface being removed @@ -290,7 +298,8 @@ static int batadv_iv_ogm_orig_del_if(struct batadv_orig_node *orig_node, } /** - * batadv_iv_ogm_orig_get - retrieve or create (if does not exist) an originator + * batadv_iv_ogm_orig_get() - retrieve or create (if does not exist) an + * originator * @bat_priv: the bat priv with all the soft interface information * @addr: mac address of the originator * @@ -447,7 +456,7 @@ static u8 batadv_hop_penalty(u8 tq, const struct batadv_priv *bat_priv) } /** - * batadv_iv_ogm_aggr_packet - checks if there is another OGM attached + * batadv_iv_ogm_aggr_packet() - checks if there is another OGM attached * @buff_pos: current position in the skb * @packet_len: total length of the skb * @tvlv_len: tvlv length of the previously considered OGM @@ -557,7 +566,7 @@ static void batadv_iv_ogm_emit(struct batadv_forw_packet *forw_packet) } /** - * batadv_iv_ogm_can_aggregate - find out if an OGM can be aggregated on an + * batadv_iv_ogm_can_aggregate() - find out if an OGM can be aggregated on an * existing forward packet * @new_bat_ogm_packet: OGM packet to be aggregated * @bat_priv: the bat priv with all the soft interface information @@ -660,7 +669,7 @@ out: } /** - * batadv_iv_ogm_aggregate_new - create a new aggregated packet and add this + * batadv_iv_ogm_aggregate_new() - create a new aggregated packet and add this * packet to it. * @packet_buff: pointer to the OGM * @packet_len: (total) length of the OGM @@ -743,7 +752,7 @@ static void batadv_iv_ogm_aggregate(struct batadv_forw_packet *forw_packet_aggr, } /** - * batadv_iv_ogm_queue_add - queue up an OGM for transmission + * batadv_iv_ogm_queue_add() - queue up an OGM for transmission * @bat_priv: the bat priv with all the soft interface information * @packet_buff: pointer to the OGM * @packet_len: (total) length of the OGM @@ -869,8 +878,8 @@ static void batadv_iv_ogm_forward(struct batadv_orig_node *orig_node, } /** - * batadv_iv_ogm_slide_own_bcast_window - bitshift own OGM broadcast windows for - * the given interface + * batadv_iv_ogm_slide_own_bcast_window() - bitshift own OGM broadcast windows + * for the given interface * @hard_iface: the interface for which the windows have to be shifted */ static void @@ -987,7 +996,7 @@ out: } /** - * batadv_iv_ogm_orig_update - use OGM to update corresponding data in an + * batadv_iv_ogm_orig_update() - use OGM to update corresponding data in an * originator * @bat_priv: the bat priv with all the soft interface information * @orig_node: the orig node who originally emitted the ogm packet @@ -1152,7 +1161,7 @@ out: } /** - * batadv_iv_ogm_calc_tq - calculate tq for current received ogm packet + * batadv_iv_ogm_calc_tq() - calculate tq for current received ogm packet * @orig_node: the orig node who originally emitted the ogm packet * @orig_neigh_node: the orig node struct of the neighbor who sent the packet * @batadv_ogm_packet: the ogm packet @@ -1298,7 +1307,7 @@ out: } /** - * batadv_iv_ogm_update_seqnos - process a batman packet for all interfaces, + * batadv_iv_ogm_update_seqnos() - process a batman packet for all interfaces, * adjust the sequence number and find out whether it is a duplicate * @ethhdr: ethernet header of the packet * @batadv_ogm_packet: OGM packet to be considered @@ -1401,7 +1410,8 @@ out: } /** - * batadv_iv_ogm_process_per_outif - process a batman iv OGM for an outgoing if + * batadv_iv_ogm_process_per_outif() - process a batman iv OGM for an outgoing + * interface * @skb: the skb containing the OGM * @ogm_offset: offset from skb->data to start of ogm header * @orig_node: the (cached) orig node for the originator of this OGM @@ -1608,7 +1618,7 @@ out: } /** - * batadv_iv_ogm_process - process an incoming batman iv OGM + * batadv_iv_ogm_process() - process an incoming batman iv OGM * @skb: the skb containing the OGM * @ogm_offset: offset to the OGM which should be processed (for aggregates) * @if_incoming: the interface where this packet was receved @@ -1861,7 +1871,7 @@ free_skb: #ifdef CONFIG_BATMAN_ADV_DEBUGFS /** - * batadv_iv_ogm_orig_print_neigh - print neighbors for the originator table + * batadv_iv_ogm_orig_print_neigh() - print neighbors for the originator table * @orig_node: the orig_node for which the neighbors are printed * @if_outgoing: outgoing interface for these entries * @seq: debugfs table seq_file struct @@ -1890,7 +1900,7 @@ batadv_iv_ogm_orig_print_neigh(struct batadv_orig_node *orig_node, } /** - * batadv_iv_ogm_orig_print - print the originator table + * batadv_iv_ogm_orig_print() - print the originator table * @bat_priv: the bat priv with all the soft interface information * @seq: debugfs table seq_file struct * @if_outgoing: the outgoing interface for which this should be printed @@ -1960,7 +1970,7 @@ next: #endif /** - * batadv_iv_ogm_neigh_get_tq_avg - Get the TQ average for a neighbour on a + * batadv_iv_ogm_neigh_get_tq_avg() - Get the TQ average for a neighbour on a * given outgoing interface. * @neigh_node: Neighbour of interest * @if_outgoing: Outgoing interface of interest @@ -1986,7 +1996,7 @@ batadv_iv_ogm_neigh_get_tq_avg(struct batadv_neigh_node *neigh_node, } /** - * batadv_iv_ogm_orig_dump_subentry - Dump an originator subentry into a + * batadv_iv_ogm_orig_dump_subentry() - Dump an originator subentry into a * message * @msg: Netlink message to dump into * @portid: Port making netlink request @@ -2048,7 +2058,7 @@ batadv_iv_ogm_orig_dump_subentry(struct sk_buff *msg, u32 portid, u32 seq, } /** - * batadv_iv_ogm_orig_dump_entry - Dump an originator entry into a message + * batadv_iv_ogm_orig_dump_entry() - Dump an originator entry into a message * @msg: Netlink message to dump into * @portid: Port making netlink request * @seq: Sequence number of netlink message @@ -2110,7 +2120,7 @@ batadv_iv_ogm_orig_dump_entry(struct sk_buff *msg, u32 portid, u32 seq, } /** - * batadv_iv_ogm_orig_dump_bucket - Dump an originator bucket into a + * batadv_iv_ogm_orig_dump_bucket() - Dump an originator bucket into a * message * @msg: Netlink message to dump into * @portid: Port making netlink request @@ -2153,7 +2163,7 @@ batadv_iv_ogm_orig_dump_bucket(struct sk_buff *msg, u32 portid, u32 seq, } /** - * batadv_iv_ogm_orig_dump - Dump the originators into a message + * batadv_iv_ogm_orig_dump() - Dump the originators into a message * @msg: Netlink message to dump into * @cb: Control block containing additional options * @bat_priv: The bat priv with all the soft interface information @@ -2190,7 +2200,7 @@ batadv_iv_ogm_orig_dump(struct sk_buff *msg, struct netlink_callback *cb, #ifdef CONFIG_BATMAN_ADV_DEBUGFS /** - * batadv_iv_hardif_neigh_print - print a single hop neighbour node + * batadv_iv_hardif_neigh_print() - print a single hop neighbour node * @seq: neighbour table seq_file struct * @hardif_neigh: hardif neighbour information */ @@ -2209,7 +2219,7 @@ batadv_iv_hardif_neigh_print(struct seq_file *seq, } /** - * batadv_iv_ogm_neigh_print - print the single hop neighbour list + * batadv_iv_ogm_neigh_print() - print the single hop neighbour list * @bat_priv: the bat priv with all the soft interface information * @seq: neighbour table seq_file struct */ @@ -2242,7 +2252,7 @@ static void batadv_iv_neigh_print(struct batadv_priv *bat_priv, #endif /** - * batadv_iv_ogm_neigh_diff - calculate tq difference of two neighbors + * batadv_iv_ogm_neigh_diff() - calculate tq difference of two neighbors * @neigh1: the first neighbor object of the comparison * @if_outgoing1: outgoing interface for the first neighbor * @neigh2: the second neighbor object of the comparison @@ -2287,7 +2297,7 @@ out: } /** - * batadv_iv_ogm_neigh_dump_neigh - Dump a neighbour into a netlink message + * batadv_iv_ogm_neigh_dump_neigh() - Dump a neighbour into a netlink message * @msg: Netlink message to dump into * @portid: Port making netlink request * @seq: Sequence number of netlink message @@ -2326,7 +2336,7 @@ batadv_iv_ogm_neigh_dump_neigh(struct sk_buff *msg, u32 portid, u32 seq, } /** - * batadv_iv_ogm_neigh_dump_hardif - Dump the neighbours of a hard interface + * batadv_iv_ogm_neigh_dump_hardif() - Dump the neighbours of a hard interface * into a message * @msg: Netlink message to dump into * @portid: Port making netlink request @@ -2365,7 +2375,7 @@ batadv_iv_ogm_neigh_dump_hardif(struct sk_buff *msg, u32 portid, u32 seq, } /** - * batadv_iv_ogm_neigh_dump - Dump the neighbours into a message + * batadv_iv_ogm_neigh_dump() - Dump the neighbours into a message * @msg: Netlink message to dump into * @cb: Control block containing additional options * @bat_priv: The bat priv with all the soft interface information @@ -2417,7 +2427,7 @@ batadv_iv_ogm_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb, } /** - * batadv_iv_ogm_neigh_cmp - compare the metrics of two neighbors + * batadv_iv_ogm_neigh_cmp() - compare the metrics of two neighbors * @neigh1: the first neighbor object of the comparison * @if_outgoing1: outgoing interface for the first neighbor * @neigh2: the second neighbor object of the comparison @@ -2443,7 +2453,7 @@ static int batadv_iv_ogm_neigh_cmp(struct batadv_neigh_node *neigh1, } /** - * batadv_iv_ogm_neigh_is_sob - check if neigh1 is similarly good or better + * batadv_iv_ogm_neigh_is_sob() - check if neigh1 is similarly good or better * than neigh2 from the metric prospective * @neigh1: the first neighbor object of the comparison * @if_outgoing1: outgoing interface for the first neighbor @@ -2478,7 +2488,7 @@ static void batadv_iv_iface_activate(struct batadv_hard_iface *hard_iface) } /** - * batadv_iv_init_sel_class - initialize GW selection class + * batadv_iv_init_sel_class() - initialize GW selection class * @bat_priv: the bat priv with all the soft interface information */ static void batadv_iv_init_sel_class(struct batadv_priv *bat_priv) @@ -2703,7 +2713,7 @@ static void batadv_iv_gw_print(struct batadv_priv *bat_priv, #endif /** - * batadv_iv_gw_dump_entry - Dump a gateway into a message + * batadv_iv_gw_dump_entry() - Dump a gateway into a message * @msg: Netlink message to dump into * @portid: Port making netlink request * @seq: Sequence number of netlink message @@ -2774,7 +2784,7 @@ out: } /** - * batadv_iv_gw_dump - Dump gateways into a message + * batadv_iv_gw_dump() - Dump gateways into a message * @msg: Netlink message to dump into * @cb: Control block containing additional options * @bat_priv: The bat priv with all the soft interface information @@ -2843,6 +2853,11 @@ static struct batadv_algo_ops batadv_batman_iv __read_mostly = { }, }; +/** + * batadv_iv_init() - B.A.T.M.A.N. IV initialization function + * + * Return: 0 on success or negative error number in case of failure + */ int __init batadv_iv_init(void) { int ret; diff --git a/net/batman-adv/bat_iv_ogm.h b/net/batman-adv/bat_iv_ogm.h index ae2ab526bdb1..9dc0dd5c83df 100644 --- a/net/batman-adv/bat_iv_ogm.h +++ b/net/batman-adv/bat_iv_ogm.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2007-2017 B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich diff --git a/net/batman-adv/bat_v.c b/net/batman-adv/bat_v.c index e0e2bfcd6b3e..78ddf3afa83a 100644 --- a/net/batman-adv/bat_v.c +++ b/net/batman-adv/bat_v.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2013-2017 B.A.T.M.A.N. contributors: * * Linus Lüssing, Marek Lindner @@ -99,7 +100,7 @@ static void batadv_v_primary_iface_set(struct batadv_hard_iface *hard_iface) } /** - * batadv_v_iface_update_mac - react to hard-interface MAC address change + * batadv_v_iface_update_mac() - react to hard-interface MAC address change * @hard_iface: the modified interface * * If the modified interface is the primary one, update the originator @@ -130,7 +131,7 @@ batadv_v_hardif_neigh_init(struct batadv_hardif_neigh_node *hardif_neigh) #ifdef CONFIG_BATMAN_ADV_DEBUGFS /** - * batadv_v_orig_print_neigh - print neighbors for the originator table + * batadv_v_orig_print_neigh() - print neighbors for the originator table * @orig_node: the orig_node for which the neighbors are printed * @if_outgoing: outgoing interface for these entries * @seq: debugfs table seq_file struct @@ -160,7 +161,7 @@ batadv_v_orig_print_neigh(struct batadv_orig_node *orig_node, } /** - * batadv_v_hardif_neigh_print - print a single ELP neighbour node + * batadv_v_hardif_neigh_print() - print a single ELP neighbour node * @seq: neighbour table seq_file struct * @hardif_neigh: hardif neighbour information */ @@ -181,7 +182,7 @@ batadv_v_hardif_neigh_print(struct seq_file *seq, } /** - * batadv_v_neigh_print - print the single hop neighbour list + * batadv_v_neigh_print() - print the single hop neighbour list * @bat_priv: the bat priv with all the soft interface information * @seq: neighbour table seq_file struct */ @@ -215,7 +216,7 @@ static void batadv_v_neigh_print(struct batadv_priv *bat_priv, #endif /** - * batadv_v_neigh_dump_neigh - Dump a neighbour into a message + * batadv_v_neigh_dump_neigh() - Dump a neighbour into a message * @msg: Netlink message to dump into * @portid: Port making netlink request * @seq: Sequence number of netlink message @@ -258,7 +259,7 @@ batadv_v_neigh_dump_neigh(struct sk_buff *msg, u32 portid, u32 seq, } /** - * batadv_v_neigh_dump_hardif - Dump the neighbours of a hard interface into + * batadv_v_neigh_dump_hardif() - Dump the neighbours of a hard interface into * a message * @msg: Netlink message to dump into * @portid: Port making netlink request @@ -296,7 +297,7 @@ batadv_v_neigh_dump_hardif(struct sk_buff *msg, u32 portid, u32 seq, } /** - * batadv_v_neigh_dump - Dump the neighbours of a hard interface into a + * batadv_v_neigh_dump() - Dump the neighbours of a hard interface into a * message * @msg: Netlink message to dump into * @cb: Control block containing additional options @@ -348,7 +349,7 @@ batadv_v_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb, #ifdef CONFIG_BATMAN_ADV_DEBUGFS /** - * batadv_v_orig_print - print the originator table + * batadv_v_orig_print() - print the originator table * @bat_priv: the bat priv with all the soft interface information * @seq: debugfs table seq_file struct * @if_outgoing: the outgoing interface for which this should be printed @@ -416,8 +417,7 @@ next: #endif /** - * batadv_v_orig_dump_subentry - Dump an originator subentry into a - * message + * batadv_v_orig_dump_subentry() - Dump an originator subentry into a message * @msg: Netlink message to dump into * @portid: Port making netlink request * @seq: Sequence number of netlink message @@ -483,7 +483,7 @@ batadv_v_orig_dump_subentry(struct sk_buff *msg, u32 portid, u32 seq, } /** - * batadv_v_orig_dump_entry - Dump an originator entry into a message + * batadv_v_orig_dump_entry() - Dump an originator entry into a message * @msg: Netlink message to dump into * @portid: Port making netlink request * @seq: Sequence number of netlink message @@ -536,8 +536,7 @@ batadv_v_orig_dump_entry(struct sk_buff *msg, u32 portid, u32 seq, } /** - * batadv_v_orig_dump_bucket - Dump an originator bucket into a - * message + * batadv_v_orig_dump_bucket() - Dump an originator bucket into a message * @msg: Netlink message to dump into * @portid: Port making netlink request * @seq: Sequence number of netlink message @@ -578,7 +577,7 @@ batadv_v_orig_dump_bucket(struct sk_buff *msg, u32 portid, u32 seq, } /** - * batadv_v_orig_dump - Dump the originators into a message + * batadv_v_orig_dump() - Dump the originators into a message * @msg: Netlink message to dump into * @cb: Control block containing additional options * @bat_priv: The bat priv with all the soft interface information @@ -668,7 +667,7 @@ err_ifinfo1: } /** - * batadv_v_init_sel_class - initialize GW selection class + * batadv_v_init_sel_class() - initialize GW selection class * @bat_priv: the bat priv with all the soft interface information */ static void batadv_v_init_sel_class(struct batadv_priv *bat_priv) @@ -704,7 +703,7 @@ static ssize_t batadv_v_show_sel_class(struct batadv_priv *bat_priv, char *buff) } /** - * batadv_v_gw_throughput_get - retrieve the GW-bandwidth for a given GW + * batadv_v_gw_throughput_get() - retrieve the GW-bandwidth for a given GW * @gw_node: the GW to retrieve the metric for * @bw: the pointer where the metric will be stored. The metric is computed as * the minimum between the GW advertised throughput and the path throughput to @@ -747,7 +746,7 @@ out: } /** - * batadv_v_gw_get_best_gw_node - retrieve the best GW node + * batadv_v_gw_get_best_gw_node() - retrieve the best GW node * @bat_priv: the bat priv with all the soft interface information * * Return: the GW node having the best GW-metric, NULL if no GW is known @@ -785,7 +784,7 @@ next: } /** - * batadv_v_gw_is_eligible - check if a originator would be selected as GW + * batadv_v_gw_is_eligible() - check if a originator would be selected as GW * @bat_priv: the bat priv with all the soft interface information * @curr_gw_orig: originator representing the currently selected GW * @orig_node: the originator representing the new candidate @@ -884,7 +883,7 @@ out: } /** - * batadv_v_gw_print - print the gateway list + * batadv_v_gw_print() - print the gateway list * @bat_priv: the bat priv with all the soft interface information * @seq: gateway table seq_file struct */ @@ -913,7 +912,7 @@ static void batadv_v_gw_print(struct batadv_priv *bat_priv, #endif /** - * batadv_v_gw_dump_entry - Dump a gateway into a message + * batadv_v_gw_dump_entry() - Dump a gateway into a message * @msg: Netlink message to dump into * @portid: Port making netlink request * @seq: Sequence number of netlink message @@ -1004,7 +1003,7 @@ out: } /** - * batadv_v_gw_dump - Dump gateways into a message + * batadv_v_gw_dump() - Dump gateways into a message * @msg: Netlink message to dump into * @cb: Control block containing additional options * @bat_priv: The bat priv with all the soft interface information @@ -1074,7 +1073,7 @@ static struct batadv_algo_ops batadv_batman_v __read_mostly = { }; /** - * batadv_v_hardif_init - initialize the algorithm specific fields in the + * batadv_v_hardif_init() - initialize the algorithm specific fields in the * hard-interface object * @hard_iface: the hard-interface to initialize */ @@ -1088,7 +1087,7 @@ void batadv_v_hardif_init(struct batadv_hard_iface *hard_iface) } /** - * batadv_v_mesh_init - initialize the B.A.T.M.A.N. V private resources for a + * batadv_v_mesh_init() - initialize the B.A.T.M.A.N. V private resources for a * mesh * @bat_priv: the object representing the mesh interface to initialise * @@ -1106,7 +1105,7 @@ int batadv_v_mesh_init(struct batadv_priv *bat_priv) } /** - * batadv_v_mesh_free - free the B.A.T.M.A.N. V private resources for a mesh + * batadv_v_mesh_free() - free the B.A.T.M.A.N. V private resources for a mesh * @bat_priv: the object representing the mesh interface to free */ void batadv_v_mesh_free(struct batadv_priv *bat_priv) @@ -1115,7 +1114,7 @@ void batadv_v_mesh_free(struct batadv_priv *bat_priv) } /** - * batadv_v_init - B.A.T.M.A.N. V initialization function + * batadv_v_init() - B.A.T.M.A.N. V initialization function * * Description: Takes care of initializing all the subcomponents. * It is invoked upon module load only. diff --git a/net/batman-adv/bat_v.h b/net/batman-adv/bat_v.h index dd7c4b647e6b..a17ab68bbce8 100644 --- a/net/batman-adv/bat_v.h +++ b/net/batman-adv/bat_v.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2011-2017 B.A.T.M.A.N. contributors: * * Marek Lindner, Linus Lüssing diff --git a/net/batman-adv/bat_v_elp.c b/net/batman-adv/bat_v_elp.c index 1de992c58b35..59ae96cef596 100644 --- a/net/batman-adv/bat_v_elp.c +++ b/net/batman-adv/bat_v_elp.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2011-2017 B.A.T.M.A.N. contributors: * * Linus Lüssing, Marek Lindner @@ -24,7 +25,7 @@ #include <linux/errno.h> #include <linux/etherdevice.h> #include <linux/ethtool.h> -#include <linux/fs.h> +#include <linux/gfp.h> #include <linux/if_ether.h> #include <linux/jiffies.h> #include <linux/kernel.h> @@ -52,7 +53,7 @@ #include "send.h" /** - * batadv_v_elp_start_timer - restart timer for ELP periodic work + * batadv_v_elp_start_timer() - restart timer for ELP periodic work * @hard_iface: the interface for which the timer has to be reset */ static void batadv_v_elp_start_timer(struct batadv_hard_iface *hard_iface) @@ -67,7 +68,7 @@ static void batadv_v_elp_start_timer(struct batadv_hard_iface *hard_iface) } /** - * batadv_v_elp_get_throughput - get the throughput towards a neighbour + * batadv_v_elp_get_throughput() - get the throughput towards a neighbour * @neigh: the neighbour for which the throughput has to be obtained * * Return: The throughput towards the given neighbour in multiples of 100kpbs @@ -153,8 +154,8 @@ default_throughput: } /** - * batadv_v_elp_throughput_metric_update - worker updating the throughput metric - * of a single hop neighbour + * batadv_v_elp_throughput_metric_update() - worker updating the throughput + * metric of a single hop neighbour * @work: the work queue item */ void batadv_v_elp_throughput_metric_update(struct work_struct *work) @@ -177,7 +178,7 @@ void batadv_v_elp_throughput_metric_update(struct work_struct *work) } /** - * batadv_v_elp_wifi_neigh_probe - send link probing packets to a neighbour + * batadv_v_elp_wifi_neigh_probe() - send link probing packets to a neighbour * @neigh: the neighbour to probe * * Sends a predefined number of unicast wifi packets to a given neighbour in @@ -240,7 +241,7 @@ batadv_v_elp_wifi_neigh_probe(struct batadv_hardif_neigh_node *neigh) } /** - * batadv_v_elp_periodic_work - ELP periodic task per interface + * batadv_v_elp_periodic_work() - ELP periodic task per interface * @work: work queue item * * Emits broadcast ELP message in regular intervals. @@ -327,7 +328,7 @@ out: } /** - * batadv_v_elp_iface_enable - setup the ELP interface private resources + * batadv_v_elp_iface_enable() - setup the ELP interface private resources * @hard_iface: interface for which the data has to be prepared * * Return: 0 on success or a -ENOMEM in case of failure. @@ -375,7 +376,7 @@ out: } /** - * batadv_v_elp_iface_disable - release ELP interface private resources + * batadv_v_elp_iface_disable() - release ELP interface private resources * @hard_iface: interface for which the resources have to be released */ void batadv_v_elp_iface_disable(struct batadv_hard_iface *hard_iface) @@ -387,7 +388,7 @@ void batadv_v_elp_iface_disable(struct batadv_hard_iface *hard_iface) } /** - * batadv_v_elp_iface_activate - update the ELP buffer belonging to the given + * batadv_v_elp_iface_activate() - update the ELP buffer belonging to the given * hard-interface * @primary_iface: the new primary interface * @hard_iface: interface holding the to-be-updated buffer @@ -408,7 +409,7 @@ void batadv_v_elp_iface_activate(struct batadv_hard_iface *primary_iface, } /** - * batadv_v_elp_primary_iface_set - change internal data to reflect the new + * batadv_v_elp_primary_iface_set() - change internal data to reflect the new * primary interface * @primary_iface: the new primary interface */ @@ -428,7 +429,7 @@ void batadv_v_elp_primary_iface_set(struct batadv_hard_iface *primary_iface) } /** - * batadv_v_elp_neigh_update - update an ELP neighbour node + * batadv_v_elp_neigh_update() - update an ELP neighbour node * @bat_priv: the bat priv with all the soft interface information * @neigh_addr: the neighbour interface address * @if_incoming: the interface the packet was received through @@ -488,7 +489,7 @@ orig_free: } /** - * batadv_v_elp_packet_recv - main ELP packet handler + * batadv_v_elp_packet_recv() - main ELP packet handler * @skb: the received packet * @if_incoming: the interface this packet was received through * diff --git a/net/batman-adv/bat_v_elp.h b/net/batman-adv/bat_v_elp.h index 376ead280ab9..5e39d0588a48 100644 --- a/net/batman-adv/bat_v_elp.h +++ b/net/batman-adv/bat_v_elp.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2013-2017 B.A.T.M.A.N. contributors: * * Linus Lüssing, Marek Lindner diff --git a/net/batman-adv/bat_v_ogm.c b/net/batman-adv/bat_v_ogm.c index c251445a42a0..e415974c540d 100644 --- a/net/batman-adv/bat_v_ogm.c +++ b/net/batman-adv/bat_v_ogm.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2013-2017 B.A.T.M.A.N. contributors: * * Antonio Quartulli @@ -22,7 +23,7 @@ #include <linux/byteorder/generic.h> #include <linux/errno.h> #include <linux/etherdevice.h> -#include <linux/fs.h> +#include <linux/gfp.h> #include <linux/if_ether.h> #include <linux/jiffies.h> #include <linux/kernel.h> @@ -51,7 +52,7 @@ #include "tvlv.h" /** - * batadv_v_ogm_orig_get - retrieve and possibly create an originator node + * batadv_v_ogm_orig_get() - retrieve and possibly create an originator node * @bat_priv: the bat priv with all the soft interface information * @addr: the address of the originator * @@ -88,7 +89,7 @@ struct batadv_orig_node *batadv_v_ogm_orig_get(struct batadv_priv *bat_priv, } /** - * batadv_v_ogm_start_timer - restart the OGM sending timer + * batadv_v_ogm_start_timer() - restart the OGM sending timer * @bat_priv: the bat priv with all the soft interface information */ static void batadv_v_ogm_start_timer(struct batadv_priv *bat_priv) @@ -107,7 +108,7 @@ static void batadv_v_ogm_start_timer(struct batadv_priv *bat_priv) } /** - * batadv_v_ogm_send_to_if - send a batman ogm using a given interface + * batadv_v_ogm_send_to_if() - send a batman ogm using a given interface * @skb: the OGM to send * @hard_iface: the interface to use to send the OGM */ @@ -127,7 +128,7 @@ static void batadv_v_ogm_send_to_if(struct sk_buff *skb, } /** - * batadv_v_ogm_send - periodic worker broadcasting the own OGM + * batadv_v_ogm_send() - periodic worker broadcasting the own OGM * @work: work queue item */ static void batadv_v_ogm_send(struct work_struct *work) @@ -235,7 +236,7 @@ out: } /** - * batadv_v_ogm_iface_enable - prepare an interface for B.A.T.M.A.N. V + * batadv_v_ogm_iface_enable() - prepare an interface for B.A.T.M.A.N. V * @hard_iface: the interface to prepare * * Takes care of scheduling own OGM sending routine for this interface. @@ -252,7 +253,7 @@ int batadv_v_ogm_iface_enable(struct batadv_hard_iface *hard_iface) } /** - * batadv_v_ogm_primary_iface_set - set a new primary interface + * batadv_v_ogm_primary_iface_set() - set a new primary interface * @primary_iface: the new primary interface */ void batadv_v_ogm_primary_iface_set(struct batadv_hard_iface *primary_iface) @@ -268,8 +269,8 @@ void batadv_v_ogm_primary_iface_set(struct batadv_hard_iface *primary_iface) } /** - * batadv_v_forward_penalty - apply a penalty to the throughput metric forwarded - * with B.A.T.M.A.N. V OGMs + * batadv_v_forward_penalty() - apply a penalty to the throughput metric + * forwarded with B.A.T.M.A.N. V OGMs * @bat_priv: the bat priv with all the soft interface information * @if_incoming: the interface where the OGM has been received * @if_outgoing: the interface where the OGM has to be forwarded to @@ -314,7 +315,7 @@ static u32 batadv_v_forward_penalty(struct batadv_priv *bat_priv, } /** - * batadv_v_ogm_forward - check conditions and forward an OGM to the given + * batadv_v_ogm_forward() - check conditions and forward an OGM to the given * outgoing interface * @bat_priv: the bat priv with all the soft interface information * @ogm_received: previously received OGM to be forwarded @@ -405,7 +406,7 @@ out: } /** - * batadv_v_ogm_metric_update - update route metric based on OGM + * batadv_v_ogm_metric_update() - update route metric based on OGM * @bat_priv: the bat priv with all the soft interface information * @ogm2: OGM2 structure * @orig_node: Originator structure for which the OGM has been received @@ -490,7 +491,7 @@ out: } /** - * batadv_v_ogm_route_update - update routes based on OGM + * batadv_v_ogm_route_update() - update routes based on OGM * @bat_priv: the bat priv with all the soft interface information * @ethhdr: the Ethernet header of the OGM2 * @ogm2: OGM2 structure @@ -590,7 +591,7 @@ out: } /** - * batadv_v_ogm_process_per_outif - process a batman v OGM for an outgoing if + * batadv_v_ogm_process_per_outif() - process a batman v OGM for an outgoing if * @bat_priv: the bat priv with all the soft interface information * @ethhdr: the Ethernet header of the OGM2 * @ogm2: OGM2 structure @@ -639,7 +640,7 @@ batadv_v_ogm_process_per_outif(struct batadv_priv *bat_priv, } /** - * batadv_v_ogm_aggr_packet - checks if there is another OGM aggregated + * batadv_v_ogm_aggr_packet() - checks if there is another OGM aggregated * @buff_pos: current position in the skb * @packet_len: total length of the skb * @tvlv_len: tvlv length of the previously considered OGM @@ -659,7 +660,7 @@ static bool batadv_v_ogm_aggr_packet(int buff_pos, int packet_len, } /** - * batadv_v_ogm_process - process an incoming batman v OGM + * batadv_v_ogm_process() - process an incoming batman v OGM * @skb: the skb containing the OGM * @ogm_offset: offset to the OGM which should be processed (for aggregates) * @if_incoming: the interface where this packet was receved @@ -787,7 +788,7 @@ out: } /** - * batadv_v_ogm_packet_recv - OGM2 receiving handler + * batadv_v_ogm_packet_recv() - OGM2 receiving handler * @skb: the received OGM * @if_incoming: the interface where this OGM has been received * @@ -851,7 +852,7 @@ free_skb: } /** - * batadv_v_ogm_init - initialise the OGM2 engine + * batadv_v_ogm_init() - initialise the OGM2 engine * @bat_priv: the bat priv with all the soft interface information * * Return: 0 on success or a negative error code in case of failure @@ -884,7 +885,7 @@ int batadv_v_ogm_init(struct batadv_priv *bat_priv) } /** - * batadv_v_ogm_free - free OGM private resources + * batadv_v_ogm_free() - free OGM private resources * @bat_priv: the bat priv with all the soft interface information */ void batadv_v_ogm_free(struct batadv_priv *bat_priv) diff --git a/net/batman-adv/bat_v_ogm.h b/net/batman-adv/bat_v_ogm.h index 2068770b542d..6a4c14ccc3c6 100644 --- a/net/batman-adv/bat_v_ogm.h +++ b/net/batman-adv/bat_v_ogm.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2013-2017 B.A.T.M.A.N. contributors: * * Antonio Quartulli diff --git a/net/batman-adv/bitarray.c b/net/batman-adv/bitarray.c index 2b070c7e31da..bdc1ef06e05b 100644 --- a/net/batman-adv/bitarray.c +++ b/net/batman-adv/bitarray.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2006-2017 B.A.T.M.A.N. contributors: * * Simon Wunderlich, Marek Lindner @@ -32,7 +33,7 @@ static void batadv_bitmap_shift_left(unsigned long *seq_bits, s32 n) } /** - * batadv_bit_get_packet - receive and process one packet within the sequence + * batadv_bit_get_packet() - receive and process one packet within the sequence * number window * @priv: the bat priv with all the soft interface information * @seq_bits: pointer to the sequence number receive packet diff --git a/net/batman-adv/bitarray.h b/net/batman-adv/bitarray.h index cc262c9d97e0..ca9d0753dd6b 100644 --- a/net/batman-adv/bitarray.h +++ b/net/batman-adv/bitarray.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2006-2017 B.A.T.M.A.N. contributors: * * Simon Wunderlich, Marek Lindner @@ -26,7 +27,7 @@ #include <linux/types.h> /** - * batadv_test_bit - check if bit is set in the current window + * batadv_test_bit() - check if bit is set in the current window * * @seq_bits: pointer to the sequence number receive packet * @last_seqno: latest sequence number in seq_bits @@ -46,7 +47,12 @@ static inline bool batadv_test_bit(const unsigned long *seq_bits, return test_bit(diff, seq_bits) != 0; } -/* turn corresponding bit on, so we can remember that we got the packet */ +/** + * batadv_set_bit() - Turn corresponding bit on, so we can remember that we got + * the packet + * @seq_bits: bitmap of the packet receive window + * @n: relative sequence number of newly received packet + */ static inline void batadv_set_bit(unsigned long *seq_bits, s32 n) { /* if too old, just drop it */ diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c index cdd8e8e4df0b..e647450e5d0f 100644 --- a/net/batman-adv/bridge_loop_avoidance.c +++ b/net/batman-adv/bridge_loop_avoidance.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2011-2017 B.A.T.M.A.N. contributors: * * Simon Wunderlich @@ -24,7 +25,7 @@ #include <linux/crc16.h> #include <linux/errno.h> #include <linux/etherdevice.h> -#include <linux/fs.h> +#include <linux/gfp.h> #include <linux/if_arp.h> #include <linux/if_ether.h> #include <linux/if_vlan.h> @@ -69,7 +70,7 @@ batadv_bla_send_announce(struct batadv_priv *bat_priv, struct batadv_bla_backbone_gw *backbone_gw); /** - * batadv_choose_claim - choose the right bucket for a claim. + * batadv_choose_claim() - choose the right bucket for a claim. * @data: data to hash * @size: size of the hash table * @@ -87,7 +88,7 @@ static inline u32 batadv_choose_claim(const void *data, u32 size) } /** - * batadv_choose_backbone_gw - choose the right bucket for a backbone gateway. + * batadv_choose_backbone_gw() - choose the right bucket for a backbone gateway. * @data: data to hash * @size: size of the hash table * @@ -105,7 +106,7 @@ static inline u32 batadv_choose_backbone_gw(const void *data, u32 size) } /** - * batadv_compare_backbone_gw - compare address and vid of two backbone gws + * batadv_compare_backbone_gw() - compare address and vid of two backbone gws * @node: list node of the first entry to compare * @data2: pointer to the second backbone gateway * @@ -129,7 +130,7 @@ static bool batadv_compare_backbone_gw(const struct hlist_node *node, } /** - * batadv_compare_claim - compare address and vid of two claims + * batadv_compare_claim() - compare address and vid of two claims * @node: list node of the first entry to compare * @data2: pointer to the second claims * @@ -153,7 +154,7 @@ static bool batadv_compare_claim(const struct hlist_node *node, } /** - * batadv_backbone_gw_release - release backbone gw from lists and queue for + * batadv_backbone_gw_release() - release backbone gw from lists and queue for * free after rcu grace period * @ref: kref pointer of the backbone gw */ @@ -168,7 +169,7 @@ static void batadv_backbone_gw_release(struct kref *ref) } /** - * batadv_backbone_gw_put - decrement the backbone gw refcounter and possibly + * batadv_backbone_gw_put() - decrement the backbone gw refcounter and possibly * release it * @backbone_gw: backbone gateway to be free'd */ @@ -178,8 +179,8 @@ static void batadv_backbone_gw_put(struct batadv_bla_backbone_gw *backbone_gw) } /** - * batadv_claim_release - release claim from lists and queue for free after rcu - * grace period + * batadv_claim_release() - release claim from lists and queue for free after + * rcu grace period * @ref: kref pointer of the claim */ static void batadv_claim_release(struct kref *ref) @@ -204,8 +205,7 @@ static void batadv_claim_release(struct kref *ref) } /** - * batadv_claim_put - decrement the claim refcounter and possibly - * release it + * batadv_claim_put() - decrement the claim refcounter and possibly release it * @claim: claim to be free'd */ static void batadv_claim_put(struct batadv_bla_claim *claim) @@ -214,7 +214,7 @@ static void batadv_claim_put(struct batadv_bla_claim *claim) } /** - * batadv_claim_hash_find - looks for a claim in the claim hash + * batadv_claim_hash_find() - looks for a claim in the claim hash * @bat_priv: the bat priv with all the soft interface information * @data: search data (may be local/static data) * @@ -253,7 +253,7 @@ batadv_claim_hash_find(struct batadv_priv *bat_priv, } /** - * batadv_backbone_hash_find - looks for a backbone gateway in the hash + * batadv_backbone_hash_find() - looks for a backbone gateway in the hash * @bat_priv: the bat priv with all the soft interface information * @addr: the address of the originator * @vid: the VLAN ID @@ -297,7 +297,7 @@ batadv_backbone_hash_find(struct batadv_priv *bat_priv, u8 *addr, } /** - * batadv_bla_del_backbone_claims - delete all claims for a backbone + * batadv_bla_del_backbone_claims() - delete all claims for a backbone * @backbone_gw: backbone gateway where the claims should be removed */ static void @@ -337,7 +337,7 @@ batadv_bla_del_backbone_claims(struct batadv_bla_backbone_gw *backbone_gw) } /** - * batadv_bla_send_claim - sends a claim frame according to the provided info + * batadv_bla_send_claim() - sends a claim frame according to the provided info * @bat_priv: the bat priv with all the soft interface information * @mac: the mac address to be announced within the claim * @vid: the VLAN ID @@ -457,7 +457,7 @@ out: } /** - * batadv_bla_loopdetect_report - worker for reporting the loop + * batadv_bla_loopdetect_report() - worker for reporting the loop * @work: work queue item * * Throws an uevent, as the loopdetect check function can't do that itself @@ -487,7 +487,7 @@ static void batadv_bla_loopdetect_report(struct work_struct *work) } /** - * batadv_bla_get_backbone_gw - finds or creates a backbone gateway + * batadv_bla_get_backbone_gw() - finds or creates a backbone gateway * @bat_priv: the bat priv with all the soft interface information * @orig: the mac address of the originator * @vid: the VLAN ID @@ -560,7 +560,7 @@ batadv_bla_get_backbone_gw(struct batadv_priv *bat_priv, u8 *orig, } /** - * batadv_bla_update_own_backbone_gw - updates the own backbone gw for a VLAN + * batadv_bla_update_own_backbone_gw() - updates the own backbone gw for a VLAN * @bat_priv: the bat priv with all the soft interface information * @primary_if: the selected primary interface * @vid: VLAN identifier @@ -586,7 +586,7 @@ batadv_bla_update_own_backbone_gw(struct batadv_priv *bat_priv, } /** - * batadv_bla_answer_request - answer a bla request by sending own claims + * batadv_bla_answer_request() - answer a bla request by sending own claims * @bat_priv: the bat priv with all the soft interface information * @primary_if: interface where the request came on * @vid: the vid where the request came on @@ -636,7 +636,7 @@ static void batadv_bla_answer_request(struct batadv_priv *bat_priv, } /** - * batadv_bla_send_request - send a request to repeat claims + * batadv_bla_send_request() - send a request to repeat claims * @backbone_gw: the backbone gateway from whom we are out of sync * * When the crc is wrong, ask the backbone gateway for a full table update. @@ -663,7 +663,7 @@ static void batadv_bla_send_request(struct batadv_bla_backbone_gw *backbone_gw) } /** - * batadv_bla_send_announce - Send an announcement frame + * batadv_bla_send_announce() - Send an announcement frame * @bat_priv: the bat priv with all the soft interface information * @backbone_gw: our backbone gateway which should be announced */ @@ -684,7 +684,7 @@ static void batadv_bla_send_announce(struct batadv_priv *bat_priv, } /** - * batadv_bla_add_claim - Adds a claim in the claim hash + * batadv_bla_add_claim() - Adds a claim in the claim hash * @bat_priv: the bat priv with all the soft interface information * @mac: the mac address of the claim * @vid: the VLAN ID of the frame @@ -774,7 +774,7 @@ claim_free_ref: } /** - * batadv_bla_claim_get_backbone_gw - Get valid reference for backbone_gw of + * batadv_bla_claim_get_backbone_gw() - Get valid reference for backbone_gw of * claim * @claim: claim whose backbone_gw should be returned * @@ -794,7 +794,7 @@ batadv_bla_claim_get_backbone_gw(struct batadv_bla_claim *claim) } /** - * batadv_bla_del_claim - delete a claim from the claim hash + * batadv_bla_del_claim() - delete a claim from the claim hash * @bat_priv: the bat priv with all the soft interface information * @mac: mac address of the claim to be removed * @vid: VLAN id for the claim to be removed @@ -822,7 +822,7 @@ static void batadv_bla_del_claim(struct batadv_priv *bat_priv, } /** - * batadv_handle_announce - check for ANNOUNCE frame + * batadv_handle_announce() - check for ANNOUNCE frame * @bat_priv: the bat priv with all the soft interface information * @an_addr: announcement mac address (ARP Sender HW address) * @backbone_addr: originator address of the sender (Ethernet source MAC) @@ -880,7 +880,7 @@ static bool batadv_handle_announce(struct batadv_priv *bat_priv, u8 *an_addr, } /** - * batadv_handle_request - check for REQUEST frame + * batadv_handle_request() - check for REQUEST frame * @bat_priv: the bat priv with all the soft interface information * @primary_if: the primary hard interface of this batman soft interface * @backbone_addr: backbone address to be requested (ARP sender HW MAC) @@ -913,7 +913,7 @@ static bool batadv_handle_request(struct batadv_priv *bat_priv, } /** - * batadv_handle_unclaim - check for UNCLAIM frame + * batadv_handle_unclaim() - check for UNCLAIM frame * @bat_priv: the bat priv with all the soft interface information * @primary_if: the primary hard interface of this batman soft interface * @backbone_addr: originator address of the backbone (Ethernet source) @@ -951,7 +951,7 @@ static bool batadv_handle_unclaim(struct batadv_priv *bat_priv, } /** - * batadv_handle_claim - check for CLAIM frame + * batadv_handle_claim() - check for CLAIM frame * @bat_priv: the bat priv with all the soft interface information * @primary_if: the primary hard interface of this batman soft interface * @backbone_addr: originator address of the backbone (Ethernet Source) @@ -988,7 +988,7 @@ static bool batadv_handle_claim(struct batadv_priv *bat_priv, } /** - * batadv_check_claim_group - check for claim group membership + * batadv_check_claim_group() - check for claim group membership * @bat_priv: the bat priv with all the soft interface information * @primary_if: the primary interface of this batman interface * @hw_src: the Hardware source in the ARP Header @@ -1063,7 +1063,7 @@ static int batadv_check_claim_group(struct batadv_priv *bat_priv, } /** - * batadv_bla_process_claim - Check if this is a claim frame, and process it + * batadv_bla_process_claim() - Check if this is a claim frame, and process it * @bat_priv: the bat priv with all the soft interface information * @primary_if: the primary hard interface of this batman soft interface * @skb: the frame to be checked @@ -1205,7 +1205,7 @@ static bool batadv_bla_process_claim(struct batadv_priv *bat_priv, } /** - * batadv_bla_purge_backbone_gw - Remove backbone gateways after a timeout or + * batadv_bla_purge_backbone_gw() - Remove backbone gateways after a timeout or * immediately * @bat_priv: the bat priv with all the soft interface information * @now: whether the whole hash shall be wiped now @@ -1258,7 +1258,7 @@ purge_now: } /** - * batadv_bla_purge_claims - Remove claims after a timeout or immediately + * batadv_bla_purge_claims() - Remove claims after a timeout or immediately * @bat_priv: the bat priv with all the soft interface information * @primary_if: the selected primary interface, may be NULL if now is set * @now: whether the whole hash shall be wiped now @@ -1316,7 +1316,7 @@ skip: } /** - * batadv_bla_update_orig_address - Update the backbone gateways when the own + * batadv_bla_update_orig_address() - Update the backbone gateways when the own * originator address changes * @bat_priv: the bat priv with all the soft interface information * @primary_if: the new selected primary_if @@ -1372,7 +1372,7 @@ void batadv_bla_update_orig_address(struct batadv_priv *bat_priv, } /** - * batadv_bla_send_loopdetect - send a loopdetect frame + * batadv_bla_send_loopdetect() - send a loopdetect frame * @bat_priv: the bat priv with all the soft interface information * @backbone_gw: the backbone gateway for which a loop should be detected * @@ -1392,7 +1392,7 @@ batadv_bla_send_loopdetect(struct batadv_priv *bat_priv, } /** - * batadv_bla_status_update - purge bla interfaces if necessary + * batadv_bla_status_update() - purge bla interfaces if necessary * @net_dev: the soft interface net device */ void batadv_bla_status_update(struct net_device *net_dev) @@ -1412,7 +1412,7 @@ void batadv_bla_status_update(struct net_device *net_dev) } /** - * batadv_bla_periodic_work - performs periodic bla work + * batadv_bla_periodic_work() - performs periodic bla work * @work: kernel work struct * * periodic work to do: @@ -1517,7 +1517,7 @@ static struct lock_class_key batadv_claim_hash_lock_class_key; static struct lock_class_key batadv_backbone_hash_lock_class_key; /** - * batadv_bla_init - initialize all bla structures + * batadv_bla_init() - initialize all bla structures * @bat_priv: the bat priv with all the soft interface information * * Return: 0 on success, < 0 on error. @@ -1579,7 +1579,7 @@ int batadv_bla_init(struct batadv_priv *bat_priv) } /** - * batadv_bla_check_bcast_duplist - Check if a frame is in the broadcast dup. + * batadv_bla_check_bcast_duplist() - Check if a frame is in the broadcast dup. * @bat_priv: the bat priv with all the soft interface information * @skb: contains the bcast_packet to be checked * @@ -1652,7 +1652,7 @@ out: } /** - * batadv_bla_is_backbone_gw_orig - Check if the originator is a gateway for + * batadv_bla_is_backbone_gw_orig() - Check if the originator is a gateway for * the VLAN identified by vid. * @bat_priv: the bat priv with all the soft interface information * @orig: originator mac address @@ -1692,7 +1692,7 @@ bool batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv, u8 *orig, } /** - * batadv_bla_is_backbone_gw - check if originator is a backbone gw for a VLAN. + * batadv_bla_is_backbone_gw() - check if originator is a backbone gw for a VLAN * @skb: the frame to be checked * @orig_node: the orig_node of the frame * @hdr_size: maximum length of the frame @@ -1726,7 +1726,7 @@ bool batadv_bla_is_backbone_gw(struct sk_buff *skb, } /** - * batadv_bla_free - free all bla structures + * batadv_bla_free() - free all bla structures * @bat_priv: the bat priv with all the soft interface information * * for softinterface free or module unload @@ -1753,7 +1753,7 @@ void batadv_bla_free(struct batadv_priv *bat_priv) } /** - * batadv_bla_loopdetect_check - check and handle a detected loop + * batadv_bla_loopdetect_check() - check and handle a detected loop * @bat_priv: the bat priv with all the soft interface information * @skb: the packet to check * @primary_if: interface where the request came on @@ -1802,7 +1802,7 @@ batadv_bla_loopdetect_check(struct batadv_priv *bat_priv, struct sk_buff *skb, } /** - * batadv_bla_rx - check packets coming from the mesh. + * batadv_bla_rx() - check packets coming from the mesh. * @bat_priv: the bat priv with all the soft interface information * @skb: the frame to be checked * @vid: the VLAN ID of the frame @@ -1914,7 +1914,7 @@ out: } /** - * batadv_bla_tx - check packets going into the mesh + * batadv_bla_tx() - check packets going into the mesh * @bat_priv: the bat priv with all the soft interface information * @skb: the frame to be checked * @vid: the VLAN ID of the frame @@ -2022,7 +2022,7 @@ out: #ifdef CONFIG_BATMAN_ADV_DEBUGFS /** - * batadv_bla_claim_table_seq_print_text - print the claim table in a seq file + * batadv_bla_claim_table_seq_print_text() - print the claim table in a seq file * @seq: seq file to print on * @offset: not used * @@ -2084,7 +2084,7 @@ out: #endif /** - * batadv_bla_claim_dump_entry - dump one entry of the claim table + * batadv_bla_claim_dump_entry() - dump one entry of the claim table * to a netlink socket * @msg: buffer for the message * @portid: netlink port @@ -2143,7 +2143,7 @@ out: } /** - * batadv_bla_claim_dump_bucket - dump one bucket of the claim table + * batadv_bla_claim_dump_bucket() - dump one bucket of the claim table * to a netlink socket * @msg: buffer for the message * @portid: netlink port @@ -2180,7 +2180,7 @@ unlock: } /** - * batadv_bla_claim_dump - dump claim table to a netlink socket + * batadv_bla_claim_dump() - dump claim table to a netlink socket * @msg: buffer for the message * @cb: callback structure containing arguments * @@ -2247,8 +2247,8 @@ out: #ifdef CONFIG_BATMAN_ADV_DEBUGFS /** - * batadv_bla_backbone_table_seq_print_text - print the backbone table in a seq - * file + * batadv_bla_backbone_table_seq_print_text() - print the backbone table in a + * seq file * @seq: seq file to print on * @offset: not used * @@ -2312,8 +2312,8 @@ out: #endif /** - * batadv_bla_backbone_dump_entry - dump one entry of the backbone table - * to a netlink socket + * batadv_bla_backbone_dump_entry() - dump one entry of the backbone table to a + * netlink socket * @msg: buffer for the message * @portid: netlink port * @seq: Sequence number of netlink message @@ -2373,8 +2373,8 @@ out: } /** - * batadv_bla_backbone_dump_bucket - dump one bucket of the backbone table - * to a netlink socket + * batadv_bla_backbone_dump_bucket() - dump one bucket of the backbone table to + * a netlink socket * @msg: buffer for the message * @portid: netlink port * @seq: Sequence number of netlink message @@ -2410,7 +2410,7 @@ unlock: } /** - * batadv_bla_backbone_dump - dump backbone table to a netlink socket + * batadv_bla_backbone_dump() - dump backbone table to a netlink socket * @msg: buffer for the message * @cb: callback structure containing arguments * @@ -2477,7 +2477,7 @@ out: #ifdef CONFIG_BATMAN_ADV_DAT /** - * batadv_bla_check_claim - check if address is claimed + * batadv_bla_check_claim() - check if address is claimed * * @bat_priv: the bat priv with all the soft interface information * @addr: mac address of which the claim status is checked diff --git a/net/batman-adv/bridge_loop_avoidance.h b/net/batman-adv/bridge_loop_avoidance.h index 234775748b8e..b27571abcd2f 100644 --- a/net/batman-adv/bridge_loop_avoidance.h +++ b/net/batman-adv/bridge_loop_avoidance.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2011-2017 B.A.T.M.A.N. contributors: * * Simon Wunderlich @@ -30,8 +31,8 @@ struct seq_file; struct sk_buff; /** - * batadv_bla_is_loopdetect_mac - check if the mac address is from a loop detect - * frame sent by bridge loop avoidance + * batadv_bla_is_loopdetect_mac() - check if the mac address is from a loop + * detect frame sent by bridge loop avoidance * @mac: mac address to check * * Return: true if the it looks like a loop detect frame diff --git a/net/batman-adv/debugfs.c b/net/batman-adv/debugfs.c index e32ad47c6efd..21d1189957a7 100644 --- a/net/batman-adv/debugfs.c +++ b/net/batman-adv/debugfs.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2010-2017 B.A.T.M.A.N. contributors: * * Marek Lindner @@ -25,7 +26,6 @@ #include <linux/fs.h> #include <linux/netdevice.h> #include <linux/printk.h> -#include <linux/sched.h> /* for linux/wait.h */ #include <linux/seq_file.h> #include <linux/stat.h> #include <linux/stddef.h> @@ -66,8 +66,8 @@ static int batadv_originators_open(struct inode *inode, struct file *file) } /** - * batadv_originators_hardif_open - handles debugfs output for the - * originator table of an hard interface + * batadv_originators_hardif_open() - handles debugfs output for the originator + * table of an hard interface * @inode: inode pointer to debugfs file * @file: pointer to the seq_file * @@ -117,7 +117,7 @@ static int batadv_bla_backbone_table_open(struct inode *inode, #ifdef CONFIG_BATMAN_ADV_DAT /** - * batadv_dat_cache_open - Prepare file handler for reads from dat_chache + * batadv_dat_cache_open() - Prepare file handler for reads from dat_chache * @inode: inode which was opened * @file: file handle to be initialized * @@ -154,7 +154,7 @@ static int batadv_nc_nodes_open(struct inode *inode, struct file *file) #ifdef CONFIG_BATMAN_ADV_MCAST /** - * batadv_mcast_flags_open - prepare file handler for reads from mcast_flags + * batadv_mcast_flags_open() - prepare file handler for reads from mcast_flags * @inode: inode which was opened * @file: file handle to be initialized * @@ -259,6 +259,9 @@ static struct batadv_debuginfo *batadv_hardif_debuginfos[] = { NULL, }; +/** + * batadv_debugfs_init() - Initialize soft interface independent debugfs entries + */ void batadv_debugfs_init(void) { struct batadv_debuginfo **bat_debug; @@ -289,6 +292,9 @@ err: batadv_debugfs = NULL; } +/** + * batadv_debugfs_destroy() - Remove all debugfs entries + */ void batadv_debugfs_destroy(void) { debugfs_remove_recursive(batadv_debugfs); @@ -296,7 +302,7 @@ void batadv_debugfs_destroy(void) } /** - * batadv_debugfs_add_hardif - creates the base directory for a hard interface + * batadv_debugfs_add_hardif() - creates the base directory for a hard interface * in debugfs. * @hard_iface: hard interface which should be added. * @@ -338,7 +344,7 @@ out: } /** - * batadv_debugfs_del_hardif - delete the base directory for a hard interface + * batadv_debugfs_del_hardif() - delete the base directory for a hard interface * in debugfs. * @hard_iface: hard interface which is deleted. */ @@ -355,6 +361,12 @@ void batadv_debugfs_del_hardif(struct batadv_hard_iface *hard_iface) } } +/** + * batadv_debugfs_add_meshif() - Initialize interface dependent debugfs entries + * @dev: netdev struct of the soft interface + * + * Return: 0 on success or negative error number in case of failure + */ int batadv_debugfs_add_meshif(struct net_device *dev) { struct batadv_priv *bat_priv = netdev_priv(dev); @@ -401,6 +413,10 @@ out: return -ENOMEM; } +/** + * batadv_debugfs_del_meshif() - Remove interface dependent debugfs entries + * @dev: netdev struct of the soft interface + */ void batadv_debugfs_del_meshif(struct net_device *dev) { struct batadv_priv *bat_priv = netdev_priv(dev); diff --git a/net/batman-adv/debugfs.h b/net/batman-adv/debugfs.h index 9c5d4a65b98c..90a08d35c501 100644 --- a/net/batman-adv/debugfs.h +++ b/net/batman-adv/debugfs.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2010-2017 B.A.T.M.A.N. contributors: * * Marek Lindner diff --git a/net/batman-adv/distributed-arp-table.c b/net/batman-adv/distributed-arp-table.c index 760c0de72582..9703c791ffc5 100644 --- a/net/batman-adv/distributed-arp-table.c +++ b/net/batman-adv/distributed-arp-table.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2011-2017 B.A.T.M.A.N. contributors: * * Antonio Quartulli @@ -23,7 +24,7 @@ #include <linux/byteorder/generic.h> #include <linux/errno.h> #include <linux/etherdevice.h> -#include <linux/fs.h> +#include <linux/gfp.h> #include <linux/if_arp.h> #include <linux/if_ether.h> #include <linux/if_vlan.h> @@ -55,7 +56,7 @@ static void batadv_dat_purge(struct work_struct *work); /** - * batadv_dat_start_timer - initialise the DAT periodic worker + * batadv_dat_start_timer() - initialise the DAT periodic worker * @bat_priv: the bat priv with all the soft interface information */ static void batadv_dat_start_timer(struct batadv_priv *bat_priv) @@ -66,7 +67,7 @@ static void batadv_dat_start_timer(struct batadv_priv *bat_priv) } /** - * batadv_dat_entry_release - release dat_entry from lists and queue for free + * batadv_dat_entry_release() - release dat_entry from lists and queue for free * after rcu grace period * @ref: kref pointer of the dat_entry */ @@ -80,7 +81,7 @@ static void batadv_dat_entry_release(struct kref *ref) } /** - * batadv_dat_entry_put - decrement the dat_entry refcounter and possibly + * batadv_dat_entry_put() - decrement the dat_entry refcounter and possibly * release it * @dat_entry: dat_entry to be free'd */ @@ -90,7 +91,7 @@ static void batadv_dat_entry_put(struct batadv_dat_entry *dat_entry) } /** - * batadv_dat_to_purge - check whether a dat_entry has to be purged or not + * batadv_dat_to_purge() - check whether a dat_entry has to be purged or not * @dat_entry: the entry to check * * Return: true if the entry has to be purged now, false otherwise. @@ -102,7 +103,7 @@ static bool batadv_dat_to_purge(struct batadv_dat_entry *dat_entry) } /** - * __batadv_dat_purge - delete entries from the DAT local storage + * __batadv_dat_purge() - delete entries from the DAT local storage * @bat_priv: the bat priv with all the soft interface information * @to_purge: function in charge to decide whether an entry has to be purged or * not. This function takes the dat_entry as argument and has to @@ -145,8 +146,8 @@ static void __batadv_dat_purge(struct batadv_priv *bat_priv, } /** - * batadv_dat_purge - periodic task that deletes old entries from the local DAT - * hash table + * batadv_dat_purge() - periodic task that deletes old entries from the local + * DAT hash table * @work: kernel work struct */ static void batadv_dat_purge(struct work_struct *work) @@ -164,7 +165,7 @@ static void batadv_dat_purge(struct work_struct *work) } /** - * batadv_compare_dat - comparing function used in the local DAT hash table + * batadv_compare_dat() - comparing function used in the local DAT hash table * @node: node in the local table * @data2: second object to compare the node to * @@ -179,7 +180,7 @@ static bool batadv_compare_dat(const struct hlist_node *node, const void *data2) } /** - * batadv_arp_hw_src - extract the hw_src field from an ARP packet + * batadv_arp_hw_src() - extract the hw_src field from an ARP packet * @skb: ARP packet * @hdr_size: size of the possible header before the ARP packet * @@ -196,7 +197,7 @@ static u8 *batadv_arp_hw_src(struct sk_buff *skb, int hdr_size) } /** - * batadv_arp_ip_src - extract the ip_src field from an ARP packet + * batadv_arp_ip_src() - extract the ip_src field from an ARP packet * @skb: ARP packet * @hdr_size: size of the possible header before the ARP packet * @@ -208,7 +209,7 @@ static __be32 batadv_arp_ip_src(struct sk_buff *skb, int hdr_size) } /** - * batadv_arp_hw_dst - extract the hw_dst field from an ARP packet + * batadv_arp_hw_dst() - extract the hw_dst field from an ARP packet * @skb: ARP packet * @hdr_size: size of the possible header before the ARP packet * @@ -220,7 +221,7 @@ static u8 *batadv_arp_hw_dst(struct sk_buff *skb, int hdr_size) } /** - * batadv_arp_ip_dst - extract the ip_dst field from an ARP packet + * batadv_arp_ip_dst() - extract the ip_dst field from an ARP packet * @skb: ARP packet * @hdr_size: size of the possible header before the ARP packet * @@ -232,7 +233,7 @@ static __be32 batadv_arp_ip_dst(struct sk_buff *skb, int hdr_size) } /** - * batadv_hash_dat - compute the hash value for an IP address + * batadv_hash_dat() - compute the hash value for an IP address * @data: data to hash * @size: size of the hash table * @@ -267,7 +268,7 @@ static u32 batadv_hash_dat(const void *data, u32 size) } /** - * batadv_dat_entry_hash_find - look for a given dat_entry in the local hash + * batadv_dat_entry_hash_find() - look for a given dat_entry in the local hash * table * @bat_priv: the bat priv with all the soft interface information * @ip: search key @@ -310,7 +311,7 @@ batadv_dat_entry_hash_find(struct batadv_priv *bat_priv, __be32 ip, } /** - * batadv_dat_entry_add - add a new dat entry or update it if already exists + * batadv_dat_entry_add() - add a new dat entry or update it if already exists * @bat_priv: the bat priv with all the soft interface information * @ip: ipv4 to add/edit * @mac_addr: mac address to assign to the given ipv4 @@ -367,7 +368,8 @@ out: #ifdef CONFIG_BATMAN_ADV_DEBUG /** - * batadv_dbg_arp - print a debug message containing all the ARP packet details + * batadv_dbg_arp() - print a debug message containing all the ARP packet + * details * @bat_priv: the bat priv with all the soft interface information * @skb: ARP packet * @hdr_size: size of the possible header before the ARP packet @@ -448,7 +450,7 @@ static void batadv_dbg_arp(struct batadv_priv *bat_priv, struct sk_buff *skb, #endif /* CONFIG_BATMAN_ADV_DEBUG */ /** - * batadv_is_orig_node_eligible - check whether a node can be a DHT candidate + * batadv_is_orig_node_eligible() - check whether a node can be a DHT candidate * @res: the array with the already selected candidates * @select: number of already selected candidates * @tmp_max: address of the currently evaluated node @@ -502,7 +504,7 @@ out: } /** - * batadv_choose_next_candidate - select the next DHT candidate + * batadv_choose_next_candidate() - select the next DHT candidate * @bat_priv: the bat priv with all the soft interface information * @cands: candidates array * @select: number of candidates already present in the array @@ -566,8 +568,8 @@ static void batadv_choose_next_candidate(struct batadv_priv *bat_priv, } /** - * batadv_dat_select_candidates - select the nodes which the DHT message has to - * be sent to + * batadv_dat_select_candidates() - select the nodes which the DHT message has + * to be sent to * @bat_priv: the bat priv with all the soft interface information * @ip_dst: ipv4 to look up in the DHT * @vid: VLAN identifier @@ -612,7 +614,7 @@ batadv_dat_select_candidates(struct batadv_priv *bat_priv, __be32 ip_dst, } /** - * batadv_dat_send_data - send a payload to the selected candidates + * batadv_dat_send_data() - send a payload to the selected candidates * @bat_priv: the bat priv with all the soft interface information * @skb: payload to send * @ip: the DHT key @@ -688,7 +690,7 @@ out: } /** - * batadv_dat_tvlv_container_update - update the dat tvlv container after dat + * batadv_dat_tvlv_container_update() - update the dat tvlv container after dat * setting change * @bat_priv: the bat priv with all the soft interface information */ @@ -710,7 +712,7 @@ static void batadv_dat_tvlv_container_update(struct batadv_priv *bat_priv) } /** - * batadv_dat_status_update - update the dat tvlv container after dat + * batadv_dat_status_update() - update the dat tvlv container after dat * setting change * @net_dev: the soft interface net device */ @@ -722,7 +724,7 @@ void batadv_dat_status_update(struct net_device *net_dev) } /** - * batadv_dat_tvlv_ogm_handler_v1 - process incoming dat tvlv container + * batadv_dat_tvlv_ogm_handler_v1() - process incoming dat tvlv container * @bat_priv: the bat priv with all the soft interface information * @orig: the orig_node of the ogm * @flags: flags indicating the tvlv state (see batadv_tvlv_handler_flags) @@ -741,7 +743,7 @@ static void batadv_dat_tvlv_ogm_handler_v1(struct batadv_priv *bat_priv, } /** - * batadv_dat_hash_free - free the local DAT hash table + * batadv_dat_hash_free() - free the local DAT hash table * @bat_priv: the bat priv with all the soft interface information */ static void batadv_dat_hash_free(struct batadv_priv *bat_priv) @@ -757,7 +759,7 @@ static void batadv_dat_hash_free(struct batadv_priv *bat_priv) } /** - * batadv_dat_init - initialise the DAT internals + * batadv_dat_init() - initialise the DAT internals * @bat_priv: the bat priv with all the soft interface information * * Return: 0 in case of success, a negative error code otherwise @@ -782,7 +784,7 @@ int batadv_dat_init(struct batadv_priv *bat_priv) } /** - * batadv_dat_free - free the DAT internals + * batadv_dat_free() - free the DAT internals * @bat_priv: the bat priv with all the soft interface information */ void batadv_dat_free(struct batadv_priv *bat_priv) @@ -797,7 +799,7 @@ void batadv_dat_free(struct batadv_priv *bat_priv) #ifdef CONFIG_BATMAN_ADV_DEBUGFS /** - * batadv_dat_cache_seq_print_text - print the local DAT hash table + * batadv_dat_cache_seq_print_text() - print the local DAT hash table * @seq: seq file to print on * @offset: not used * @@ -850,7 +852,7 @@ out: #endif /** - * batadv_arp_get_type - parse an ARP packet and gets the type + * batadv_arp_get_type() - parse an ARP packet and gets the type * @bat_priv: the bat priv with all the soft interface information * @skb: packet to analyse * @hdr_size: size of the possible header before the ARP packet in the skb @@ -924,7 +926,7 @@ out: } /** - * batadv_dat_get_vid - extract the VLAN identifier from skb if any + * batadv_dat_get_vid() - extract the VLAN identifier from skb if any * @skb: the buffer containing the packet to extract the VID from * @hdr_size: the size of the batman-adv header encapsulating the packet * @@ -950,7 +952,7 @@ static unsigned short batadv_dat_get_vid(struct sk_buff *skb, int *hdr_size) } /** - * batadv_dat_arp_create_reply - create an ARP Reply + * batadv_dat_arp_create_reply() - create an ARP Reply * @bat_priv: the bat priv with all the soft interface information * @ip_src: ARP sender IP * @ip_dst: ARP target IP @@ -985,7 +987,7 @@ batadv_dat_arp_create_reply(struct batadv_priv *bat_priv, __be32 ip_src, } /** - * batadv_dat_snoop_outgoing_arp_request - snoop the ARP request and try to + * batadv_dat_snoop_outgoing_arp_request() - snoop the ARP request and try to * answer using DAT * @bat_priv: the bat priv with all the soft interface information * @skb: packet to check @@ -1083,7 +1085,7 @@ out: } /** - * batadv_dat_snoop_incoming_arp_request - snoop the ARP request and try to + * batadv_dat_snoop_incoming_arp_request() - snoop the ARP request and try to * answer using the local DAT storage * @bat_priv: the bat priv with all the soft interface information * @skb: packet to check @@ -1153,7 +1155,7 @@ out: } /** - * batadv_dat_snoop_outgoing_arp_reply - snoop the ARP reply and fill the DHT + * batadv_dat_snoop_outgoing_arp_reply() - snoop the ARP reply and fill the DHT * @bat_priv: the bat priv with all the soft interface information * @skb: packet to check */ @@ -1193,8 +1195,8 @@ void batadv_dat_snoop_outgoing_arp_reply(struct batadv_priv *bat_priv, } /** - * batadv_dat_snoop_incoming_arp_reply - snoop the ARP reply and fill the local - * DAT storage only + * batadv_dat_snoop_incoming_arp_reply() - snoop the ARP reply and fill the + * local DAT storage only * @bat_priv: the bat priv with all the soft interface information * @skb: packet to check * @hdr_size: size of the encapsulation header @@ -1282,8 +1284,8 @@ out: } /** - * batadv_dat_drop_broadcast_packet - check if an ARP request has to be dropped - * (because the node has already obtained the reply via DAT) or not + * batadv_dat_drop_broadcast_packet() - check if an ARP request has to be + * dropped (because the node has already obtained the reply via DAT) or not * @bat_priv: the bat priv with all the soft interface information * @forw_packet: the broadcast packet * diff --git a/net/batman-adv/distributed-arp-table.h b/net/batman-adv/distributed-arp-table.h index ec364a3c1c66..3d47bedaf661 100644 --- a/net/batman-adv/distributed-arp-table.h +++ b/net/batman-adv/distributed-arp-table.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2011-2017 B.A.T.M.A.N. contributors: * * Antonio Quartulli @@ -48,7 +49,7 @@ bool batadv_dat_drop_broadcast_packet(struct batadv_priv *bat_priv, struct batadv_forw_packet *forw_packet); /** - * batadv_dat_init_orig_node_addr - assign a DAT address to the orig_node + * batadv_dat_init_orig_node_addr() - assign a DAT address to the orig_node * @orig_node: the node to assign the DAT address to */ static inline void @@ -61,7 +62,7 @@ batadv_dat_init_orig_node_addr(struct batadv_orig_node *orig_node) } /** - * batadv_dat_init_own_addr - assign a DAT address to the node itself + * batadv_dat_init_own_addr() - assign a DAT address to the node itself * @bat_priv: the bat priv with all the soft interface information * @primary_if: a pointer to the primary interface */ @@ -82,7 +83,7 @@ void batadv_dat_free(struct batadv_priv *bat_priv); int batadv_dat_cache_seq_print_text(struct seq_file *seq, void *offset); /** - * batadv_dat_inc_counter - increment the correct DAT packet counter + * batadv_dat_inc_counter() - increment the correct DAT packet counter * @bat_priv: the bat priv with all the soft interface information * @subtype: the 4addr subtype of the packet to be counted * diff --git a/net/batman-adv/fragmentation.c b/net/batman-adv/fragmentation.c index ebe6e38934e4..4979350af9a7 100644 --- a/net/batman-adv/fragmentation.c +++ b/net/batman-adv/fragmentation.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2013-2017 B.A.T.M.A.N. contributors: * * Martin Hundebøll <martin@hundeboll.net> @@ -22,7 +23,7 @@ #include <linux/byteorder/generic.h> #include <linux/errno.h> #include <linux/etherdevice.h> -#include <linux/fs.h> +#include <linux/gfp.h> #include <linux/if_ether.h> #include <linux/jiffies.h> #include <linux/kernel.h> @@ -41,7 +42,7 @@ #include "soft-interface.h" /** - * batadv_frag_clear_chain - delete entries in the fragment buffer chain + * batadv_frag_clear_chain() - delete entries in the fragment buffer chain * @head: head of chain with entries. * @dropped: whether the chain is cleared because all fragments are dropped * @@ -65,7 +66,7 @@ static void batadv_frag_clear_chain(struct hlist_head *head, bool dropped) } /** - * batadv_frag_purge_orig - free fragments associated to an orig + * batadv_frag_purge_orig() - free fragments associated to an orig * @orig_node: originator to free fragments from * @check_cb: optional function to tell if an entry should be purged */ @@ -89,7 +90,7 @@ void batadv_frag_purge_orig(struct batadv_orig_node *orig_node, } /** - * batadv_frag_size_limit - maximum possible size of packet to be fragmented + * batadv_frag_size_limit() - maximum possible size of packet to be fragmented * * Return: the maximum size of payload that can be fragmented. */ @@ -104,7 +105,7 @@ static int batadv_frag_size_limit(void) } /** - * batadv_frag_init_chain - check and prepare fragment chain for new fragment + * batadv_frag_init_chain() - check and prepare fragment chain for new fragment * @chain: chain in fragments table to init * @seqno: sequence number of the received fragment * @@ -134,7 +135,7 @@ static bool batadv_frag_init_chain(struct batadv_frag_table_entry *chain, } /** - * batadv_frag_insert_packet - insert a fragment into a fragment chain + * batadv_frag_insert_packet() - insert a fragment into a fragment chain * @orig_node: originator that the fragment was received from * @skb: skb to insert * @chain_out: list head to attach complete chains of fragments to @@ -248,7 +249,7 @@ err: } /** - * batadv_frag_merge_packets - merge a chain of fragments + * batadv_frag_merge_packets() - merge a chain of fragments * @chain: head of chain with fragments * * Expand the first skb in the chain and copy the content of the remaining @@ -306,7 +307,7 @@ free: } /** - * batadv_frag_skb_buffer - buffer fragment for later merge + * batadv_frag_skb_buffer() - buffer fragment for later merge * @skb: skb to buffer * @orig_node_src: originator that the skb is received from * @@ -346,7 +347,7 @@ out_err: } /** - * batadv_frag_skb_fwd - forward fragments that would exceed MTU when merged + * batadv_frag_skb_fwd() - forward fragments that would exceed MTU when merged * @skb: skb to forward * @recv_if: interface that the skb is received on * @orig_node_src: originator that the skb is received from @@ -400,7 +401,7 @@ out: } /** - * batadv_frag_create - create a fragment from skb + * batadv_frag_create() - create a fragment from skb * @skb: skb to create fragment from * @frag_head: header to use in new fragment * @fragment_size: size of new fragment @@ -438,7 +439,7 @@ err: } /** - * batadv_frag_send_packet - create up to 16 fragments from the passed skb + * batadv_frag_send_packet() - create up to 16 fragments from the passed skb * @skb: skb to create fragments from * @orig_node: final destination of the created fragments * @neigh_node: next-hop of the created fragments diff --git a/net/batman-adv/fragmentation.h b/net/batman-adv/fragmentation.h index 1a2d6c308745..138b22a1836a 100644 --- a/net/batman-adv/fragmentation.h +++ b/net/batman-adv/fragmentation.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2013-2017 B.A.T.M.A.N. contributors: * * Martin Hundebøll <martin@hundeboll.net> @@ -39,7 +40,7 @@ int batadv_frag_send_packet(struct sk_buff *skb, struct batadv_neigh_node *neigh_node); /** - * batadv_frag_check_entry - check if a list of fragments has timed out + * batadv_frag_check_entry() - check if a list of fragments has timed out * @frags_entry: table entry to check * * Return: true if the frags entry has timed out, false otherwise. diff --git a/net/batman-adv/gateway_client.c b/net/batman-adv/gateway_client.c index 10d521f0b17f..2488e25d0eef 100644 --- a/net/batman-adv/gateway_client.c +++ b/net/batman-adv/gateway_client.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2009-2017 B.A.T.M.A.N. contributors: * * Marek Lindner @@ -22,7 +23,7 @@ #include <linux/byteorder/generic.h> #include <linux/errno.h> #include <linux/etherdevice.h> -#include <linux/fs.h> +#include <linux/gfp.h> #include <linux/if_ether.h> #include <linux/if_vlan.h> #include <linux/in.h> @@ -68,8 +69,8 @@ #define BATADV_DHCP_CHADDR_OFFSET 28 /** - * batadv_gw_node_release - release gw_node from lists and queue for free after - * rcu grace period + * batadv_gw_node_release() - release gw_node from lists and queue for free + * after rcu grace period * @ref: kref pointer of the gw_node */ static void batadv_gw_node_release(struct kref *ref) @@ -83,7 +84,8 @@ static void batadv_gw_node_release(struct kref *ref) } /** - * batadv_gw_node_put - decrement the gw_node refcounter and possibly release it + * batadv_gw_node_put() - decrement the gw_node refcounter and possibly release + * it * @gw_node: gateway node to free */ void batadv_gw_node_put(struct batadv_gw_node *gw_node) @@ -91,6 +93,12 @@ void batadv_gw_node_put(struct batadv_gw_node *gw_node) kref_put(&gw_node->refcount, batadv_gw_node_release); } +/** + * batadv_gw_get_selected_gw_node() - Get currently selected gateway + * @bat_priv: the bat priv with all the soft interface information + * + * Return: selected gateway (with increased refcnt), NULL on errors + */ struct batadv_gw_node * batadv_gw_get_selected_gw_node(struct batadv_priv *bat_priv) { @@ -109,6 +117,12 @@ out: return gw_node; } +/** + * batadv_gw_get_selected_orig() - Get originator of currently selected gateway + * @bat_priv: the bat priv with all the soft interface information + * + * Return: orig_node of selected gateway (with increased refcnt), NULL on errors + */ struct batadv_orig_node * batadv_gw_get_selected_orig(struct batadv_priv *bat_priv) { @@ -155,7 +169,7 @@ static void batadv_gw_select(struct batadv_priv *bat_priv, } /** - * batadv_gw_reselect - force a gateway reselection + * batadv_gw_reselect() - force a gateway reselection * @bat_priv: the bat priv with all the soft interface information * * Set a flag to remind the GW component to perform a new gateway reselection. @@ -171,7 +185,7 @@ void batadv_gw_reselect(struct batadv_priv *bat_priv) } /** - * batadv_gw_check_client_stop - check if client mode has been switched off + * batadv_gw_check_client_stop() - check if client mode has been switched off * @bat_priv: the bat priv with all the soft interface information * * This function assumes the caller has checked that the gw state *is actually @@ -202,6 +216,10 @@ void batadv_gw_check_client_stop(struct batadv_priv *bat_priv) batadv_gw_node_put(curr_gw); } +/** + * batadv_gw_election() - Elect the best gateway + * @bat_priv: the bat priv with all the soft interface information + */ void batadv_gw_election(struct batadv_priv *bat_priv) { struct batadv_gw_node *curr_gw = NULL; @@ -290,6 +308,11 @@ out: batadv_neigh_ifinfo_put(router_ifinfo); } +/** + * batadv_gw_check_election() - Elect orig node as best gateway when eligible + * @bat_priv: the bat priv with all the soft interface information + * @orig_node: orig node which is to be checked + */ void batadv_gw_check_election(struct batadv_priv *bat_priv, struct batadv_orig_node *orig_node) { @@ -321,7 +344,7 @@ out: } /** - * batadv_gw_node_add - add gateway node to list of available gateways + * batadv_gw_node_add() - add gateway node to list of available gateways * @bat_priv: the bat priv with all the soft interface information * @orig_node: originator announcing gateway capabilities * @gateway: announced bandwidth information @@ -364,7 +387,7 @@ static void batadv_gw_node_add(struct batadv_priv *bat_priv, } /** - * batadv_gw_node_get - retrieve gateway node from list of available gateways + * batadv_gw_node_get() - retrieve gateway node from list of available gateways * @bat_priv: the bat priv with all the soft interface information * @orig_node: originator announcing gateway capabilities * @@ -393,7 +416,7 @@ struct batadv_gw_node *batadv_gw_node_get(struct batadv_priv *bat_priv, } /** - * batadv_gw_node_update - update list of available gateways with changed + * batadv_gw_node_update() - update list of available gateways with changed * bandwidth information * @bat_priv: the bat priv with all the soft interface information * @orig_node: originator announcing gateway capabilities @@ -458,6 +481,11 @@ out: batadv_gw_node_put(gw_node); } +/** + * batadv_gw_node_delete() - Remove orig_node from gateway list + * @bat_priv: the bat priv with all the soft interface information + * @orig_node: orig node which is currently in process of being removed + */ void batadv_gw_node_delete(struct batadv_priv *bat_priv, struct batadv_orig_node *orig_node) { @@ -469,6 +497,10 @@ void batadv_gw_node_delete(struct batadv_priv *bat_priv, batadv_gw_node_update(bat_priv, orig_node, &gateway); } +/** + * batadv_gw_node_free() - Free gateway information from soft interface + * @bat_priv: the bat priv with all the soft interface information + */ void batadv_gw_node_free(struct batadv_priv *bat_priv) { struct batadv_gw_node *gw_node; @@ -484,6 +516,14 @@ void batadv_gw_node_free(struct batadv_priv *bat_priv) } #ifdef CONFIG_BATMAN_ADV_DEBUGFS + +/** + * batadv_gw_client_seq_print_text() - Print the gateway table in a seq file + * @seq: seq file to print on + * @offset: not used + * + * Return: always 0 + */ int batadv_gw_client_seq_print_text(struct seq_file *seq, void *offset) { struct net_device *net_dev = (struct net_device *)seq->private; @@ -514,7 +554,7 @@ int batadv_gw_client_seq_print_text(struct seq_file *seq, void *offset) #endif /** - * batadv_gw_dump - Dump gateways into a message + * batadv_gw_dump() - Dump gateways into a message * @msg: Netlink message to dump into * @cb: Control block containing additional options * @@ -567,7 +607,7 @@ out: } /** - * batadv_gw_dhcp_recipient_get - check if a packet is a DHCP message + * batadv_gw_dhcp_recipient_get() - check if a packet is a DHCP message * @skb: the packet to check * @header_len: a pointer to the batman-adv header size * @chaddr: buffer where the client address will be stored. Valid @@ -686,7 +726,8 @@ batadv_gw_dhcp_recipient_get(struct sk_buff *skb, unsigned int *header_len, } /** - * batadv_gw_out_of_range - check if the dhcp request destination is the best gw + * batadv_gw_out_of_range() - check if the dhcp request destination is the best + * gateway * @bat_priv: the bat priv with all the soft interface information * @skb: the outgoing packet * diff --git a/net/batman-adv/gateway_client.h b/net/batman-adv/gateway_client.h index 3baa3d466e5e..981f58421a32 100644 --- a/net/batman-adv/gateway_client.h +++ b/net/batman-adv/gateway_client.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2009-2017 B.A.T.M.A.N. contributors: * * Marek Lindner diff --git a/net/batman-adv/gateway_common.c b/net/batman-adv/gateway_common.c index 2c26039c23fc..83bfeecf661c 100644 --- a/net/batman-adv/gateway_common.c +++ b/net/batman-adv/gateway_common.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2009-2017 B.A.T.M.A.N. contributors: * * Marek Lindner @@ -33,8 +34,8 @@ #include "tvlv.h" /** - * batadv_parse_throughput - parse supplied string buffer to extract throughput - * information + * batadv_parse_throughput() - parse supplied string buffer to extract + * throughput information * @net_dev: the soft interface net device * @buff: string buffer to parse * @description: text shown when throughput string cannot be parsed @@ -100,8 +101,8 @@ bool batadv_parse_throughput(struct net_device *net_dev, char *buff, } /** - * batadv_parse_gw_bandwidth - parse supplied string buffer to extract download - * and upload bandwidth information + * batadv_parse_gw_bandwidth() - parse supplied string buffer to extract + * download and upload bandwidth information * @net_dev: the soft interface net device * @buff: string buffer to parse * @down: pointer holding the returned download bandwidth information @@ -136,8 +137,8 @@ static bool batadv_parse_gw_bandwidth(struct net_device *net_dev, char *buff, } /** - * batadv_gw_tvlv_container_update - update the gw tvlv container after gateway - * setting change + * batadv_gw_tvlv_container_update() - update the gw tvlv container after + * gateway setting change * @bat_priv: the bat priv with all the soft interface information */ void batadv_gw_tvlv_container_update(struct batadv_priv *bat_priv) @@ -164,6 +165,15 @@ void batadv_gw_tvlv_container_update(struct batadv_priv *bat_priv) } } +/** + * batadv_gw_bandwidth_set() - Parse and set download/upload gateway bandwidth + * from supplied string buffer + * @net_dev: netdev struct of the soft interface + * @buff: the buffer containing the user data + * @count: number of bytes in the buffer + * + * Return: 'count' on success or a negative error code in case of failure + */ ssize_t batadv_gw_bandwidth_set(struct net_device *net_dev, char *buff, size_t count) { @@ -207,7 +217,7 @@ ssize_t batadv_gw_bandwidth_set(struct net_device *net_dev, char *buff, } /** - * batadv_gw_tvlv_ogm_handler_v1 - process incoming gateway tvlv container + * batadv_gw_tvlv_ogm_handler_v1() - process incoming gateway tvlv container * @bat_priv: the bat priv with all the soft interface information * @orig: the orig_node of the ogm * @flags: flags indicating the tvlv state (see batadv_tvlv_handler_flags) @@ -248,7 +258,7 @@ static void batadv_gw_tvlv_ogm_handler_v1(struct batadv_priv *bat_priv, } /** - * batadv_gw_init - initialise the gateway handling internals + * batadv_gw_init() - initialise the gateway handling internals * @bat_priv: the bat priv with all the soft interface information */ void batadv_gw_init(struct batadv_priv *bat_priv) @@ -264,7 +274,7 @@ void batadv_gw_init(struct batadv_priv *bat_priv) } /** - * batadv_gw_free - free the gateway handling internals + * batadv_gw_free() - free the gateway handling internals * @bat_priv: the bat priv with all the soft interface information */ void batadv_gw_free(struct batadv_priv *bat_priv) diff --git a/net/batman-adv/gateway_common.h b/net/batman-adv/gateway_common.h index 0a6a97d201f2..afebd9c7edf4 100644 --- a/net/batman-adv/gateway_common.h +++ b/net/batman-adv/gateway_common.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2009-2017 B.A.T.M.A.N. contributors: * * Marek Lindner @@ -32,11 +33,12 @@ enum batadv_gw_modes { /** * enum batadv_bandwidth_units - bandwidth unit types - * @BATADV_BW_UNIT_KBIT: unit type kbit - * @BATADV_BW_UNIT_MBIT: unit type mbit */ enum batadv_bandwidth_units { + /** @BATADV_BW_UNIT_KBIT: unit type kbit */ BATADV_BW_UNIT_KBIT, + + /** @BATADV_BW_UNIT_MBIT: unit type mbit */ BATADV_BW_UNIT_MBIT, }; diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c index 4e3d5340ad96..13d04dba0b3a 100644 --- a/net/batman-adv/hard-interface.c +++ b/net/batman-adv/hard-interface.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2007-2017 B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich @@ -22,7 +23,7 @@ #include <linux/bug.h> #include <linux/byteorder/generic.h> #include <linux/errno.h> -#include <linux/fs.h> +#include <linux/gfp.h> #include <linux/if.h> #include <linux/if_arp.h> #include <linux/if_ether.h> @@ -52,7 +53,7 @@ #include "translation-table.h" /** - * batadv_hardif_release - release hard interface from lists and queue for + * batadv_hardif_release() - release hard interface from lists and queue for * free after rcu grace period * @ref: kref pointer of the hard interface */ @@ -66,6 +67,12 @@ void batadv_hardif_release(struct kref *ref) kfree_rcu(hard_iface, rcu); } +/** + * batadv_hardif_get_by_netdev() - Get hard interface object of a net_device + * @net_dev: net_device to search for + * + * Return: batadv_hard_iface of net_dev (with increased refcnt), NULL on errors + */ struct batadv_hard_iface * batadv_hardif_get_by_netdev(const struct net_device *net_dev) { @@ -86,7 +93,7 @@ out: } /** - * batadv_getlink_net - return link net namespace (of use fallback) + * batadv_getlink_net() - return link net namespace (of use fallback) * @netdev: net_device to check * @fallback_net: return in case get_link_net is not available for @netdev * @@ -105,7 +112,7 @@ static struct net *batadv_getlink_net(const struct net_device *netdev, } /** - * batadv_mutual_parents - check if two devices are each others parent + * batadv_mutual_parents() - check if two devices are each others parent * @dev1: 1st net dev * @net1: 1st devices netns * @dev2: 2nd net dev @@ -138,7 +145,7 @@ static bool batadv_mutual_parents(const struct net_device *dev1, } /** - * batadv_is_on_batman_iface - check if a device is a batman iface descendant + * batadv_is_on_batman_iface() - check if a device is a batman iface descendant * @net_dev: the device to check * * If the user creates any virtual device on top of a batman-adv interface, it @@ -202,7 +209,7 @@ static bool batadv_is_valid_iface(const struct net_device *net_dev) } /** - * batadv_get_real_netdevice - check if the given netdev struct is a virtual + * batadv_get_real_netdevice() - check if the given netdev struct is a virtual * interface on top of another 'real' interface * @netdev: the device to check * @@ -246,7 +253,7 @@ out: } /** - * batadv_get_real_netdev - check if the given net_device struct is a virtual + * batadv_get_real_netdev() - check if the given net_device struct is a virtual * interface on top of another 'real' interface * @net_device: the device to check * @@ -265,7 +272,7 @@ struct net_device *batadv_get_real_netdev(struct net_device *net_device) } /** - * batadv_is_wext_netdev - check if the given net_device struct is a + * batadv_is_wext_netdev() - check if the given net_device struct is a * wext wifi interface * @net_device: the device to check * @@ -289,7 +296,7 @@ static bool batadv_is_wext_netdev(struct net_device *net_device) } /** - * batadv_is_cfg80211_netdev - check if the given net_device struct is a + * batadv_is_cfg80211_netdev() - check if the given net_device struct is a * cfg80211 wifi interface * @net_device: the device to check * @@ -309,7 +316,7 @@ static bool batadv_is_cfg80211_netdev(struct net_device *net_device) } /** - * batadv_wifi_flags_evaluate - calculate wifi flags for net_device + * batadv_wifi_flags_evaluate() - calculate wifi flags for net_device * @net_device: the device to check * * Return: batadv_hard_iface_wifi_flags flags of the device @@ -344,7 +351,7 @@ out: } /** - * batadv_is_cfg80211_hardif - check if the given hardif is a cfg80211 wifi + * batadv_is_cfg80211_hardif() - check if the given hardif is a cfg80211 wifi * interface * @hard_iface: the device to check * @@ -362,7 +369,7 @@ bool batadv_is_cfg80211_hardif(struct batadv_hard_iface *hard_iface) } /** - * batadv_is_wifi_hardif - check if the given hardif is a wifi interface + * batadv_is_wifi_hardif() - check if the given hardif is a wifi interface * @hard_iface: the device to check * * Return: true if the net device is a 802.11 wireless device, false otherwise. @@ -376,7 +383,7 @@ bool batadv_is_wifi_hardif(struct batadv_hard_iface *hard_iface) } /** - * batadv_hardif_no_broadcast - check whether (re)broadcast is necessary + * batadv_hardif_no_broadcast() - check whether (re)broadcast is necessary * @if_outgoing: the outgoing interface checked and considered for (re)broadcast * @orig_addr: the originator of this packet * @orig_neigh: originator address of the forwarder we just got the packet from @@ -560,6 +567,13 @@ static void batadv_hardif_recalc_extra_skbroom(struct net_device *soft_iface) soft_iface->needed_tailroom = lower_tailroom; } +/** + * batadv_hardif_min_mtu() - Calculate maximum MTU for soft interface + * @soft_iface: netdev struct of the soft interface + * + * Return: MTU for the soft-interface (limited by the minimal MTU of all active + * slave interfaces) + */ int batadv_hardif_min_mtu(struct net_device *soft_iface) { struct batadv_priv *bat_priv = netdev_priv(soft_iface); @@ -606,7 +620,11 @@ out: return min_t(int, min_mtu - batadv_max_header_len(), ETH_DATA_LEN); } -/* adjusts the MTU if a new interface with a smaller MTU appeared. */ +/** + * batadv_update_min_mtu() - Adjusts the MTU if a new interface with a smaller + * MTU appeared + * @soft_iface: netdev struct of the soft interface + */ void batadv_update_min_mtu(struct net_device *soft_iface) { soft_iface->mtu = batadv_hardif_min_mtu(soft_iface); @@ -667,7 +685,7 @@ batadv_hardif_deactivate_interface(struct batadv_hard_iface *hard_iface) } /** - * batadv_master_del_slave - remove hard_iface from the current master interface + * batadv_master_del_slave() - remove hard_iface from the current master iface * @slave: the interface enslaved in another master * @master: the master from which slave has to be removed * @@ -691,6 +709,14 @@ static int batadv_master_del_slave(struct batadv_hard_iface *slave, return ret; } +/** + * batadv_hardif_enable_interface() - Enslave hard interface to soft interface + * @hard_iface: hard interface to add to soft interface + * @net: the applicable net namespace + * @iface_name: name of the soft interface + * + * Return: 0 on success or negative error number in case of failure + */ int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface, struct net *net, const char *iface_name) { @@ -802,6 +828,12 @@ err: return ret; } +/** + * batadv_hardif_disable_interface() - Remove hard interface from soft interface + * @hard_iface: hard interface to be removed + * @autodel: whether to delete soft interface when it doesn't contain any other + * slave interfaces + */ void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface, enum batadv_hard_if_cleanup autodel) { @@ -936,6 +968,9 @@ static void batadv_hardif_remove_interface(struct batadv_hard_iface *hard_iface) batadv_hardif_put(hard_iface); } +/** + * batadv_hardif_remove_interfaces() - Remove all hard interfaces + */ void batadv_hardif_remove_interfaces(void) { struct batadv_hard_iface *hard_iface, *hard_iface_tmp; diff --git a/net/batman-adv/hard-interface.h b/net/batman-adv/hard-interface.h index 9f9890ff7a22..de5e9a374ece 100644 --- a/net/batman-adv/hard-interface.h +++ b/net/batman-adv/hard-interface.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2007-2017 B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich @@ -30,36 +31,74 @@ struct net_device; struct net; +/** + * enum batadv_hard_if_state - State of a hard interface + */ enum batadv_hard_if_state { + /** + * @BATADV_IF_NOT_IN_USE: interface is not used as slave interface of a + * batman-adv soft interface + */ BATADV_IF_NOT_IN_USE, + + /** + * @BATADV_IF_TO_BE_REMOVED: interface will be removed from soft + * interface + */ BATADV_IF_TO_BE_REMOVED, + + /** @BATADV_IF_INACTIVE: interface is deactivated */ BATADV_IF_INACTIVE, + + /** @BATADV_IF_ACTIVE: interface is used */ BATADV_IF_ACTIVE, + + /** @BATADV_IF_TO_BE_ACTIVATED: interface is getting activated */ BATADV_IF_TO_BE_ACTIVATED, + + /** + * @BATADV_IF_I_WANT_YOU: interface is queued up (using sysfs) for being + * added as slave interface of a batman-adv soft interface + */ BATADV_IF_I_WANT_YOU, }; /** * enum batadv_hard_if_bcast - broadcast avoidance options - * @BATADV_HARDIF_BCAST_OK: Do broadcast on according hard interface - * @BATADV_HARDIF_BCAST_NORECIPIENT: Broadcast not needed, there is no recipient - * @BATADV_HARDIF_BCAST_DUPFWD: There is just the neighbor we got it from - * @BATADV_HARDIF_BCAST_DUPORIG: There is just the originator */ enum batadv_hard_if_bcast { + /** @BATADV_HARDIF_BCAST_OK: Do broadcast on according hard interface */ BATADV_HARDIF_BCAST_OK = 0, + + /** + * @BATADV_HARDIF_BCAST_NORECIPIENT: Broadcast not needed, there is no + * recipient + */ BATADV_HARDIF_BCAST_NORECIPIENT, + + /** + * @BATADV_HARDIF_BCAST_DUPFWD: There is just the neighbor we got it + * from + */ BATADV_HARDIF_BCAST_DUPFWD, + + /** @BATADV_HARDIF_BCAST_DUPORIG: There is just the originator */ BATADV_HARDIF_BCAST_DUPORIG, }; /** * enum batadv_hard_if_cleanup - Cleanup modi for soft_iface after slave removal - * @BATADV_IF_CLEANUP_KEEP: Don't automatically delete soft-interface - * @BATADV_IF_CLEANUP_AUTO: Delete soft-interface after last slave was removed */ enum batadv_hard_if_cleanup { + /** + * @BATADV_IF_CLEANUP_KEEP: Don't automatically delete soft-interface + */ BATADV_IF_CLEANUP_KEEP, + + /** + * @BATADV_IF_CLEANUP_AUTO: Delete soft-interface after last slave was + * removed + */ BATADV_IF_CLEANUP_AUTO, }; @@ -82,7 +121,7 @@ int batadv_hardif_no_broadcast(struct batadv_hard_iface *if_outgoing, u8 *orig_addr, u8 *orig_neigh); /** - * batadv_hardif_put - decrement the hard interface refcounter and possibly + * batadv_hardif_put() - decrement the hard interface refcounter and possibly * release it * @hard_iface: the hard interface to free */ @@ -91,6 +130,12 @@ static inline void batadv_hardif_put(struct batadv_hard_iface *hard_iface) kref_put(&hard_iface->refcount, batadv_hardif_release); } +/** + * batadv_primary_if_get_selected() - Get reference to primary interface + * @bat_priv: the bat priv with all the soft interface information + * + * Return: primary interface (with increased refcnt), otherwise NULL + */ static inline struct batadv_hard_iface * batadv_primary_if_get_selected(struct batadv_priv *bat_priv) { diff --git a/net/batman-adv/hash.c b/net/batman-adv/hash.c index b5f7e13918ac..04d964358c98 100644 --- a/net/batman-adv/hash.c +++ b/net/batman-adv/hash.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2006-2017 B.A.T.M.A.N. contributors: * * Simon Wunderlich, Marek Lindner @@ -18,7 +19,7 @@ #include "hash.h" #include "main.h" -#include <linux/fs.h> +#include <linux/gfp.h> #include <linux/lockdep.h> #include <linux/slab.h> @@ -33,7 +34,10 @@ static void batadv_hash_init(struct batadv_hashtable *hash) } } -/* free only the hashtable and the hash itself. */ +/** + * batadv_hash_destroy() - Free only the hashtable and the hash itself + * @hash: hash object to destroy + */ void batadv_hash_destroy(struct batadv_hashtable *hash) { kfree(hash->list_locks); @@ -41,7 +45,12 @@ void batadv_hash_destroy(struct batadv_hashtable *hash) kfree(hash); } -/* allocates and clears the hash */ +/** + * batadv_hash_new() - Allocates and clears the hashtable + * @size: number of hash buckets to allocate + * + * Return: newly allocated hashtable, NULL on errors + */ struct batadv_hashtable *batadv_hash_new(u32 size) { struct batadv_hashtable *hash; @@ -70,6 +79,11 @@ free_hash: return NULL; } +/** + * batadv_hash_set_lock_class() - Set specific lockdep class for hash spinlocks + * @hash: hash object to modify + * @key: lockdep class key address + */ void batadv_hash_set_lock_class(struct batadv_hashtable *hash, struct lock_class_key *key) { diff --git a/net/batman-adv/hash.h b/net/batman-adv/hash.h index 0c905e91c5e2..4ce1b6d3ad5c 100644 --- a/net/batman-adv/hash.h +++ b/net/batman-adv/hash.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2006-2017 B.A.T.M.A.N. contributors: * * Simon Wunderlich, Marek Lindner @@ -45,10 +46,18 @@ typedef bool (*batadv_hashdata_compare_cb)(const struct hlist_node *, typedef u32 (*batadv_hashdata_choose_cb)(const void *, u32); typedef void (*batadv_hashdata_free_cb)(struct hlist_node *, void *); +/** + * struct batadv_hashtable - Wrapper of simple hlist based hashtable + */ struct batadv_hashtable { - struct hlist_head *table; /* the hashtable itself with the buckets */ - spinlock_t *list_locks; /* spinlock for each hash list entry */ - u32 size; /* size of hashtable */ + /** @table: the hashtable itself with the buckets */ + struct hlist_head *table; + + /** @list_locks: spinlock for each hash list entry */ + spinlock_t *list_locks; + + /** @size: size of hashtable */ + u32 size; }; /* allocates and clears the hash */ @@ -62,7 +71,7 @@ void batadv_hash_set_lock_class(struct batadv_hashtable *hash, void batadv_hash_destroy(struct batadv_hashtable *hash); /** - * batadv_hash_add - adds data to the hashtable + * batadv_hash_add() - adds data to the hashtable * @hash: storage hash table * @compare: callback to determine if 2 hash elements are identical * @choose: callback calculating the hash index @@ -112,8 +121,15 @@ out: return ret; } -/* removes data from hash, if found. data could be the structure you use with - * just the key filled, we just need the key for comparing. +/** + * batadv_hash_remove() - Removes data from hash, if found + * @hash: hash table + * @compare: callback to determine if 2 hash elements are identical + * @choose: callback calculating the hash index + * @data: data passed to the aforementioned callbacks as argument + * + * ata could be the structure you use with just the key filled, we just need + * the key for comparing. * * Return: returns pointer do data on success, so you can remove the used * structure yourself, or NULL on error diff --git a/net/batman-adv/icmp_socket.c b/net/batman-adv/icmp_socket.c index bded31121d12..f2ef75b7fa73 100644 --- a/net/batman-adv/icmp_socket.c +++ b/net/batman-adv/icmp_socket.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2007-2017 B.A.T.M.A.N. contributors: * * Marek Lindner @@ -26,6 +27,7 @@ #include <linux/export.h> #include <linux/fcntl.h> #include <linux/fs.h> +#include <linux/gfp.h> #include <linux/if_ether.h> #include <linux/kernel.h> #include <linux/list.h> @@ -55,6 +57,9 @@ static void batadv_socket_add_packet(struct batadv_socket_client *socket_client, struct batadv_icmp_header *icmph, size_t icmp_len); +/** + * batadv_socket_init() - Initialize soft interface independent socket data + */ void batadv_socket_init(void) { memset(batadv_socket_client_hash, 0, sizeof(batadv_socket_client_hash)); @@ -314,6 +319,12 @@ static const struct file_operations batadv_fops = { .llseek = no_llseek, }; +/** + * batadv_socket_setup() - Create debugfs "socket" file + * @bat_priv: the bat priv with all the soft interface information + * + * Return: 0 on success or negative error number in case of failure + */ int batadv_socket_setup(struct batadv_priv *bat_priv) { struct dentry *d; @@ -333,7 +344,7 @@ err: } /** - * batadv_socket_add_packet - schedule an icmp packet to be sent to + * batadv_socket_add_packet() - schedule an icmp packet to be sent to * userspace on an icmp socket. * @socket_client: the socket this packet belongs to * @icmph: pointer to the header of the icmp packet @@ -390,7 +401,7 @@ static void batadv_socket_add_packet(struct batadv_socket_client *socket_client, } /** - * batadv_socket_receive_packet - schedule an icmp packet to be received + * batadv_socket_receive_packet() - schedule an icmp packet to be received * locally and sent to userspace. * @icmph: pointer to the header of the icmp packet * @icmp_len: total length of the icmp packet diff --git a/net/batman-adv/icmp_socket.h b/net/batman-adv/icmp_socket.h index f3fec40aae86..84cddd01eeab 100644 --- a/net/batman-adv/icmp_socket.h +++ b/net/batman-adv/icmp_socket.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2007-2017 B.A.T.M.A.N. contributors: * * Marek Lindner diff --git a/net/batman-adv/log.c b/net/batman-adv/log.c index 4ef4bde2cc2d..da004980ab8b 100644 --- a/net/batman-adv/log.c +++ b/net/batman-adv/log.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2010-2017 B.A.T.M.A.N. contributors: * * Marek Lindner @@ -24,6 +25,7 @@ #include <linux/export.h> #include <linux/fcntl.h> #include <linux/fs.h> +#include <linux/gfp.h> #include <linux/jiffies.h> #include <linux/kernel.h> #include <linux/module.h> @@ -86,6 +88,13 @@ static int batadv_fdebug_log(struct batadv_priv_debug_log *debug_log, return 0; } +/** + * batadv_debug_log() - Add debug log entry + * @bat_priv: the bat priv with all the soft interface information + * @fmt: format string + * + * Return: 0 on success or negative error number in case of failure + */ int batadv_debug_log(struct batadv_priv *bat_priv, const char *fmt, ...) { va_list args; @@ -197,6 +206,12 @@ static const struct file_operations batadv_log_fops = { .llseek = no_llseek, }; +/** + * batadv_debug_log_setup() - Initialize debug log + * @bat_priv: the bat priv with all the soft interface information + * + * Return: 0 on success or negative error number in case of failure + */ int batadv_debug_log_setup(struct batadv_priv *bat_priv) { struct dentry *d; @@ -222,6 +237,10 @@ err: return -ENOMEM; } +/** + * batadv_debug_log_cleanup() - Destroy debug log + * @bat_priv: the bat priv with all the soft interface information + */ void batadv_debug_log_cleanup(struct batadv_priv *bat_priv) { kfree(bat_priv->debug_log); diff --git a/net/batman-adv/log.h b/net/batman-adv/log.h index 65ce97efa6b5..35e02b2b9e72 100644 --- a/net/batman-adv/log.h +++ b/net/batman-adv/log.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2007-2017 B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich @@ -44,25 +45,33 @@ static inline void batadv_debug_log_cleanup(struct batadv_priv *bat_priv) /** * enum batadv_dbg_level - available log levels - * @BATADV_DBG_BATMAN: OGM and TQ computations related messages - * @BATADV_DBG_ROUTES: route added / changed / deleted - * @BATADV_DBG_TT: translation table messages - * @BATADV_DBG_BLA: bridge loop avoidance messages - * @BATADV_DBG_DAT: ARP snooping and DAT related messages - * @BATADV_DBG_NC: network coding related messages - * @BATADV_DBG_MCAST: multicast related messages - * @BATADV_DBG_TP_METER: throughput meter messages - * @BATADV_DBG_ALL: the union of all the above log levels */ enum batadv_dbg_level { + /** @BATADV_DBG_BATMAN: OGM and TQ computations related messages */ BATADV_DBG_BATMAN = BIT(0), + + /** @BATADV_DBG_ROUTES: route added / changed / deleted */ BATADV_DBG_ROUTES = BIT(1), + + /** @BATADV_DBG_TT: translation table messages */ BATADV_DBG_TT = BIT(2), + + /** @BATADV_DBG_BLA: bridge loop avoidance messages */ BATADV_DBG_BLA = BIT(3), + + /** @BATADV_DBG_DAT: ARP snooping and DAT related messages */ BATADV_DBG_DAT = BIT(4), + + /** @BATADV_DBG_NC: network coding related messages */ BATADV_DBG_NC = BIT(5), + + /** @BATADV_DBG_MCAST: multicast related messages */ BATADV_DBG_MCAST = BIT(6), + + /** @BATADV_DBG_TP_METER: throughput meter messages */ BATADV_DBG_TP_METER = BIT(7), + + /** @BATADV_DBG_ALL: the union of all the above log levels */ BATADV_DBG_ALL = 255, }; @@ -70,7 +79,14 @@ enum batadv_dbg_level { int batadv_debug_log(struct batadv_priv *bat_priv, const char *fmt, ...) __printf(2, 3); -/* possibly ratelimited debug output */ +/** + * _batadv_dbg() - Store debug output with(out) ratelimiting + * @type: type of debug message + * @bat_priv: the bat priv with all the soft interface information + * @ratelimited: whether output should be rate limited + * @fmt: format string + * @arg...: variable arguments + */ #define _batadv_dbg(type, bat_priv, ratelimited, fmt, arg...) \ do { \ struct batadv_priv *__batpriv = (bat_priv); \ @@ -89,11 +105,30 @@ static inline void _batadv_dbg(int type __always_unused, } #endif +/** + * batadv_dbg() - Store debug output without ratelimiting + * @type: type of debug message + * @bat_priv: the bat priv with all the soft interface information + * @arg...: format string and variable arguments + */ #define batadv_dbg(type, bat_priv, arg...) \ _batadv_dbg(type, bat_priv, 0, ## arg) + +/** + * batadv_dbg_ratelimited() - Store debug output with ratelimiting + * @type: type of debug message + * @bat_priv: the bat priv with all the soft interface information + * @arg...: format string and variable arguments + */ #define batadv_dbg_ratelimited(type, bat_priv, arg...) \ _batadv_dbg(type, bat_priv, 1, ## arg) +/** + * batadv_info() - Store message in debug buffer and print it to kmsg buffer + * @net_dev: the soft interface net device + * @fmt: format string + * @arg...: variable arguments + */ #define batadv_info(net_dev, fmt, arg...) \ do { \ struct net_device *_netdev = (net_dev); \ @@ -101,6 +136,13 @@ static inline void _batadv_dbg(int type __always_unused, batadv_dbg(BATADV_DBG_ALL, _batpriv, fmt, ## arg); \ pr_info("%s: " fmt, _netdev->name, ## arg); \ } while (0) + +/** + * batadv_err() - Store error in debug buffer and print it to kmsg buffer + * @net_dev: the soft interface net device + * @fmt: format string + * @arg...: variable arguments + */ #define batadv_err(net_dev, fmt, arg...) \ do { \ struct net_device *_netdev = (net_dev); \ diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c index 4daed7ad46f2..8bee4279d579 100644 --- a/net/batman-adv/main.c +++ b/net/batman-adv/main.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2007-2017 B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich @@ -18,12 +19,12 @@ #include "main.h" #include <linux/atomic.h> -#include <linux/bug.h> +#include <linux/build_bug.h> #include <linux/byteorder/generic.h> #include <linux/crc32c.h> #include <linux/errno.h> -#include <linux/fs.h> #include <linux/genetlink.h> +#include <linux/gfp.h> #include <linux/if_ether.h> #include <linux/if_vlan.h> #include <linux/init.h> @@ -139,6 +140,12 @@ static void __exit batadv_exit(void) batadv_tt_cache_destroy(); } +/** + * batadv_mesh_init() - Initialize soft interface + * @soft_iface: netdev struct of the soft interface + * + * Return: 0 on success or negative error number in case of failure + */ int batadv_mesh_init(struct net_device *soft_iface) { struct batadv_priv *bat_priv = netdev_priv(soft_iface); @@ -216,6 +223,10 @@ err: return ret; } +/** + * batadv_mesh_free() - Deinitialize soft interface + * @soft_iface: netdev struct of the soft interface + */ void batadv_mesh_free(struct net_device *soft_iface) { struct batadv_priv *bat_priv = netdev_priv(soft_iface); @@ -255,8 +266,8 @@ void batadv_mesh_free(struct net_device *soft_iface) } /** - * batadv_is_my_mac - check if the given mac address belongs to any of the real - * interfaces in the current mesh + * batadv_is_my_mac() - check if the given mac address belongs to any of the + * real interfaces in the current mesh * @bat_priv: the bat priv with all the soft interface information * @addr: the address to check * @@ -286,7 +297,7 @@ bool batadv_is_my_mac(struct batadv_priv *bat_priv, const u8 *addr) #ifdef CONFIG_BATMAN_ADV_DEBUGFS /** - * batadv_seq_print_text_primary_if_get - called from debugfs table printing + * batadv_seq_print_text_primary_if_get() - called from debugfs table printing * function that requires the primary interface * @seq: debugfs table seq_file struct * @@ -323,7 +334,7 @@ out: #endif /** - * batadv_max_header_len - calculate maximum encapsulation overhead for a + * batadv_max_header_len() - calculate maximum encapsulation overhead for a * payload packet * * Return: the maximum encapsulation overhead in bytes. @@ -348,7 +359,7 @@ int batadv_max_header_len(void) } /** - * batadv_skb_set_priority - sets skb priority according to packet content + * batadv_skb_set_priority() - sets skb priority according to packet content * @skb: the packet to be sent * @offset: offset to the packet content * @@ -412,6 +423,16 @@ static int batadv_recv_unhandled_packet(struct sk_buff *skb, /* incoming packets with the batman ethertype received on any active hard * interface */ + +/** + * batadv_batman_skb_recv() - Handle incoming message from an hard interface + * @skb: the received packet + * @dev: the net device that the packet was received on + * @ptype: packet type of incoming packet (ETH_P_BATMAN) + * @orig_dev: the original receive net device (e.g. bonded device) + * + * Return: NET_RX_SUCCESS on success or NET_RX_DROP in case of failure + */ int batadv_batman_skb_recv(struct sk_buff *skb, struct net_device *dev, struct packet_type *ptype, struct net_device *orig_dev) @@ -535,6 +556,13 @@ static void batadv_recv_handler_init(void) batadv_rx_handler[BATADV_UNICAST_FRAG] = batadv_recv_frag_packet; } +/** + * batadv_recv_handler_register() - Register handler for batman-adv packet type + * @packet_type: batadv_packettype which should be handled + * @recv_handler: receive handler for the packet type + * + * Return: 0 on success or negative error number in case of failure + */ int batadv_recv_handler_register(u8 packet_type, int (*recv_handler)(struct sk_buff *, @@ -552,13 +580,17 @@ batadv_recv_handler_register(u8 packet_type, return 0; } +/** + * batadv_recv_handler_unregister() - Unregister handler for packet type + * @packet_type: batadv_packettype which should no longer be handled + */ void batadv_recv_handler_unregister(u8 packet_type) { batadv_rx_handler[packet_type] = batadv_recv_unhandled_packet; } /** - * batadv_skb_crc32 - calculate CRC32 of the whole packet and skip bytes in + * batadv_skb_crc32() - calculate CRC32 of the whole packet and skip bytes in * the header * @skb: skb pointing to fragmented socket buffers * @payload_ptr: Pointer to position inside the head buffer of the skb @@ -591,7 +623,7 @@ __be32 batadv_skb_crc32(struct sk_buff *skb, u8 *payload_ptr) } /** - * batadv_get_vid - extract the VLAN identifier from skb if any + * batadv_get_vid() - extract the VLAN identifier from skb if any * @skb: the buffer containing the packet * @header_len: length of the batman header preceding the ethernet header * @@ -618,7 +650,7 @@ unsigned short batadv_get_vid(struct sk_buff *skb, size_t header_len) } /** - * batadv_vlan_ap_isola_get - return the AP isolation status for the given vlan + * batadv_vlan_ap_isola_get() - return AP isolation status for the given vlan * @bat_priv: the bat priv with all the soft interface information * @vid: the VLAN identifier for which the AP isolation attributed as to be * looked up diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h index edb2f239d04d..5ac86df48c42 100644 --- a/net/batman-adv/main.h +++ b/net/batman-adv/main.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2007-2017 B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich @@ -24,7 +25,7 @@ #define BATADV_DRIVER_DEVICE "batman-adv" #ifndef BATADV_SOURCE_VERSION -#define BATADV_SOURCE_VERSION "2017.4" +#define BATADV_SOURCE_VERSION "2018.0" #endif /* B.A.T.M.A.N. parameters */ @@ -140,24 +141,56 @@ */ #define BATADV_TP_MAX_NUM 5 +/** + * enum batadv_mesh_state - State of a soft interface + */ enum batadv_mesh_state { + /** @BATADV_MESH_INACTIVE: soft interface is not yet running */ BATADV_MESH_INACTIVE, + + /** @BATADV_MESH_ACTIVE: interface is up and running */ BATADV_MESH_ACTIVE, + + /** @BATADV_MESH_DEACTIVATING: interface is getting shut down */ BATADV_MESH_DEACTIVATING, }; #define BATADV_BCAST_QUEUE_LEN 256 #define BATADV_BATMAN_QUEUE_LEN 256 +/** + * enum batadv_uev_action - action type of uevent + */ enum batadv_uev_action { + /** @BATADV_UEV_ADD: gateway was selected (after none was selected) */ BATADV_UEV_ADD = 0, + + /** + * @BATADV_UEV_DEL: selected gateway was removed and none is selected + * anymore + */ BATADV_UEV_DEL, + + /** + * @BATADV_UEV_CHANGE: a different gateway was selected as based gateway + */ BATADV_UEV_CHANGE, + + /** + * @BATADV_UEV_LOOPDETECT: loop was detected which cannot be handled by + * bridge loop avoidance + */ BATADV_UEV_LOOPDETECT, }; +/** + * enum batadv_uev_type - Type of uevent + */ enum batadv_uev_type { + /** @BATADV_UEV_GW: selected gateway was modified */ BATADV_UEV_GW = 0, + + /** @BATADV_UEV_BLA: bridge loop avoidance event */ BATADV_UEV_BLA, }; @@ -202,7 +235,7 @@ struct seq_file; struct sk_buff; /** - * batadv_print_vid - return printable version of vid information + * batadv_print_vid() - return printable version of vid information * @vid: the VLAN identifier * * Return: -1 when no VLAN is used, VLAN id otherwise @@ -238,7 +271,7 @@ void batadv_recv_handler_unregister(u8 packet_type); __be32 batadv_skb_crc32(struct sk_buff *skb, u8 *payload_ptr); /** - * batadv_compare_eth - Compare two not u16 aligned Ethernet addresses + * batadv_compare_eth() - Compare two not u16 aligned Ethernet addresses * @data1: Pointer to a six-byte array containing the Ethernet address * @data2: Pointer other six-byte array containing the Ethernet address * @@ -252,7 +285,7 @@ static inline bool batadv_compare_eth(const void *data1, const void *data2) } /** - * batadv_has_timed_out - compares current time (jiffies) and timestamp + + * batadv_has_timed_out() - compares current time (jiffies) and timestamp + * timeout * @timestamp: base value to compare with (in jiffies) * @timeout: added to base value before comparing (in milliseconds) @@ -265,40 +298,96 @@ static inline bool batadv_has_timed_out(unsigned long timestamp, return time_is_before_jiffies(timestamp + msecs_to_jiffies(timeout)); } +/** + * batadv_atomic_dec_not_zero() - Decrease unless the number is 0 + * @v: pointer of type atomic_t + * + * Return: non-zero if v was not 0, and zero otherwise. + */ #define batadv_atomic_dec_not_zero(v) atomic_add_unless((v), -1, 0) -/* Returns the smallest signed integer in two's complement with the sizeof x */ +/** + * batadv_smallest_signed_int() - Returns the smallest signed integer in two's + * complement with the sizeof x + * @x: type of integer + * + * Return: smallest signed integer of type + */ #define batadv_smallest_signed_int(x) (1u << (7u + 8u * (sizeof(x) - 1u))) -/* Checks if a sequence number x is a predecessor/successor of y. - * they handle overflows/underflows and can correctly check for a - * predecessor/successor unless the variable sequence number has grown by - * more then 2**(bitwidth(x)-1)-1. +/** + * batadv_seq_before() - Checks if a sequence number x is a predecessor of y + * @x: potential predecessor of @y + * @y: value to compare @x against + * + * It handles overflows/underflows and can correctly check for a predecessor + * unless the variable sequence number has grown by more then + * 2**(bitwidth(x)-1)-1. + * * This means that for a u8 with the maximum value 255, it would think: - * - when adding nothing - it is neither a predecessor nor a successor - * - before adding more than 127 to the starting value - it is a predecessor, - * - when adding 128 - it is neither a predecessor nor a successor, - * - after adding more than 127 to the starting value - it is a successor + * + * * when adding nothing - it is neither a predecessor nor a successor + * * before adding more than 127 to the starting value - it is a predecessor, + * * when adding 128 - it is neither a predecessor nor a successor, + * * after adding more than 127 to the starting value - it is a successor + * + * Return: true when x is a predecessor of y, false otherwise */ #define batadv_seq_before(x, y) ({typeof(x)_d1 = (x); \ typeof(y)_d2 = (y); \ typeof(x)_dummy = (_d1 - _d2); \ (void)(&_d1 == &_d2); \ _dummy > batadv_smallest_signed_int(_dummy); }) + +/** + * batadv_seq_after() - Checks if a sequence number x is a successor of y + * @x: potential sucessor of @y + * @y: value to compare @x against + * + * It handles overflows/underflows and can correctly check for a successor + * unless the variable sequence number has grown by more then + * 2**(bitwidth(x)-1)-1. + * + * This means that for a u8 with the maximum value 255, it would think: + * + * * when adding nothing - it is neither a predecessor nor a successor + * * before adding more than 127 to the starting value - it is a predecessor, + * * when adding 128 - it is neither a predecessor nor a successor, + * * after adding more than 127 to the starting value - it is a successor + * + * Return: true when x is a successor of y, false otherwise + */ #define batadv_seq_after(x, y) batadv_seq_before(y, x) -/* Stop preemption on local cpu while incrementing the counter */ +/** + * batadv_add_counter() - Add to per cpu statistics counter of soft interface + * @bat_priv: the bat priv with all the soft interface information + * @idx: counter index which should be modified + * @count: value to increase counter by + * + * Stop preemption on local cpu while incrementing the counter + */ static inline void batadv_add_counter(struct batadv_priv *bat_priv, size_t idx, size_t count) { this_cpu_add(bat_priv->bat_counters[idx], count); } +/** + * batadv_inc_counter() - Increase per cpu statistics counter of soft interface + * @b: the bat priv with all the soft interface information + * @i: counter index which should be modified + */ #define batadv_inc_counter(b, i) batadv_add_counter(b, i, 1) -/* Define a macro to reach the control buffer of the skb. The members of the - * control buffer are defined in struct batadv_skb_cb in types.h. - * The macro is inspired by the similar macro TCP_SKB_CB() in tcp.h. +/** + * BATADV_SKB_CB() - Get batadv_skb_cb from skb control buffer + * @__skb: skb holding the control buffer + * + * The members of the control buffer are defined in struct batadv_skb_cb in + * types.h. The macro is inspired by the similar macro TCP_SKB_CB() in tcp.h. + * + * Return: pointer to the batadv_skb_cb of the skb */ #define BATADV_SKB_CB(__skb) ((struct batadv_skb_cb *)&((__skb)->cb[0])) diff --git a/net/batman-adv/multicast.c b/net/batman-adv/multicast.c index e553a8770a89..8a503c526b90 100644 --- a/net/batman-adv/multicast.c +++ b/net/batman-adv/multicast.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2014-2017 B.A.T.M.A.N. contributors: * * Linus Lüssing @@ -24,7 +25,7 @@ #include <linux/byteorder/generic.h> #include <linux/errno.h> #include <linux/etherdevice.h> -#include <linux/fs.h> +#include <linux/gfp.h> #include <linux/icmpv6.h> #include <linux/if_bridge.h> #include <linux/if_ether.h> @@ -65,7 +66,7 @@ static void batadv_mcast_mla_update(struct work_struct *work); /** - * batadv_mcast_start_timer - schedule the multicast periodic worker + * batadv_mcast_start_timer() - schedule the multicast periodic worker * @bat_priv: the bat priv with all the soft interface information */ static void batadv_mcast_start_timer(struct batadv_priv *bat_priv) @@ -75,7 +76,7 @@ static void batadv_mcast_start_timer(struct batadv_priv *bat_priv) } /** - * batadv_mcast_get_bridge - get the bridge on top of the softif if it exists + * batadv_mcast_get_bridge() - get the bridge on top of the softif if it exists * @soft_iface: netdev struct of the mesh interface * * If the given soft interface has a bridge on top then the refcount @@ -101,7 +102,7 @@ static struct net_device *batadv_mcast_get_bridge(struct net_device *soft_iface) } /** - * batadv_mcast_mla_softif_get - get softif multicast listeners + * batadv_mcast_mla_softif_get() - get softif multicast listeners * @dev: the device to collect multicast addresses from * @mcast_list: a list to put found addresses into * @@ -147,7 +148,7 @@ static int batadv_mcast_mla_softif_get(struct net_device *dev, } /** - * batadv_mcast_mla_is_duplicate - check whether an address is in a list + * batadv_mcast_mla_is_duplicate() - check whether an address is in a list * @mcast_addr: the multicast address to check * @mcast_list: the list with multicast addresses to search in * @@ -167,7 +168,7 @@ static bool batadv_mcast_mla_is_duplicate(u8 *mcast_addr, } /** - * batadv_mcast_mla_br_addr_cpy - copy a bridge multicast address + * batadv_mcast_mla_br_addr_cpy() - copy a bridge multicast address * @dst: destination to write to - a multicast MAC address * @src: source to read from - a multicast IP address * @@ -191,7 +192,7 @@ static void batadv_mcast_mla_br_addr_cpy(char *dst, const struct br_ip *src) } /** - * batadv_mcast_mla_bridge_get - get bridged-in multicast listeners + * batadv_mcast_mla_bridge_get() - get bridged-in multicast listeners * @dev: a bridge slave whose bridge to collect multicast addresses from * @mcast_list: a list to put found addresses into * @@ -244,7 +245,7 @@ out: } /** - * batadv_mcast_mla_list_free - free a list of multicast addresses + * batadv_mcast_mla_list_free() - free a list of multicast addresses * @mcast_list: the list to free * * Removes and frees all items in the given mcast_list. @@ -261,7 +262,7 @@ static void batadv_mcast_mla_list_free(struct hlist_head *mcast_list) } /** - * batadv_mcast_mla_tt_retract - clean up multicast listener announcements + * batadv_mcast_mla_tt_retract() - clean up multicast listener announcements * @bat_priv: the bat priv with all the soft interface information * @mcast_list: a list of addresses which should _not_ be removed * @@ -297,7 +298,7 @@ static void batadv_mcast_mla_tt_retract(struct batadv_priv *bat_priv, } /** - * batadv_mcast_mla_tt_add - add multicast listener announcements + * batadv_mcast_mla_tt_add() - add multicast listener announcements * @bat_priv: the bat priv with all the soft interface information * @mcast_list: a list of addresses which are going to get added * @@ -333,7 +334,7 @@ static void batadv_mcast_mla_tt_add(struct batadv_priv *bat_priv, } /** - * batadv_mcast_has_bridge - check whether the soft-iface is bridged + * batadv_mcast_has_bridge() - check whether the soft-iface is bridged * @bat_priv: the bat priv with all the soft interface information * * Checks whether there is a bridge on top of our soft interface. @@ -354,7 +355,8 @@ static bool batadv_mcast_has_bridge(struct batadv_priv *bat_priv) } /** - * batadv_mcast_querier_log - debug output regarding the querier status on link + * batadv_mcast_querier_log() - debug output regarding the querier status on + * link * @bat_priv: the bat priv with all the soft interface information * @str_proto: a string for the querier protocol (e.g. "IGMP" or "MLD") * @old_state: the previous querier state on our link @@ -405,7 +407,8 @@ batadv_mcast_querier_log(struct batadv_priv *bat_priv, char *str_proto, } /** - * batadv_mcast_bridge_log - debug output for topology changes in bridged setups + * batadv_mcast_bridge_log() - debug output for topology changes in bridged + * setups * @bat_priv: the bat priv with all the soft interface information * @bridged: a flag about whether the soft interface is currently bridged or not * @querier_ipv4: (maybe) new status of a potential, selected IGMP querier @@ -444,7 +447,7 @@ batadv_mcast_bridge_log(struct batadv_priv *bat_priv, bool bridged, } /** - * batadv_mcast_flags_logs - output debug information about mcast flag changes + * batadv_mcast_flags_logs() - output debug information about mcast flag changes * @bat_priv: the bat priv with all the soft interface information * @flags: flags indicating the new multicast state * @@ -470,7 +473,7 @@ static void batadv_mcast_flags_log(struct batadv_priv *bat_priv, u8 flags) } /** - * batadv_mcast_mla_tvlv_update - update multicast tvlv + * batadv_mcast_mla_tvlv_update() - update multicast tvlv * @bat_priv: the bat priv with all the soft interface information * * Updates the own multicast tvlv with our current multicast related settings, @@ -545,7 +548,7 @@ update: } /** - * __batadv_mcast_mla_update - update the own MLAs + * __batadv_mcast_mla_update() - update the own MLAs * @bat_priv: the bat priv with all the soft interface information * * Updates the own multicast listener announcements in the translation @@ -582,7 +585,7 @@ out: } /** - * batadv_mcast_mla_update - update the own MLAs + * batadv_mcast_mla_update() - update the own MLAs * @work: kernel work struct * * Updates the own multicast listener announcements in the translation @@ -605,7 +608,7 @@ static void batadv_mcast_mla_update(struct work_struct *work) } /** - * batadv_mcast_is_report_ipv4 - check for IGMP reports + * batadv_mcast_is_report_ipv4() - check for IGMP reports * @skb: the ethernet frame destined for the mesh * * This call might reallocate skb data. @@ -630,7 +633,8 @@ static bool batadv_mcast_is_report_ipv4(struct sk_buff *skb) } /** - * batadv_mcast_forw_mode_check_ipv4 - check for optimized forwarding potential + * batadv_mcast_forw_mode_check_ipv4() - check for optimized forwarding + * potential * @bat_priv: the bat priv with all the soft interface information * @skb: the IPv4 packet to check * @is_unsnoopable: stores whether the destination is snoopable @@ -671,7 +675,7 @@ static int batadv_mcast_forw_mode_check_ipv4(struct batadv_priv *bat_priv, } /** - * batadv_mcast_is_report_ipv6 - check for MLD reports + * batadv_mcast_is_report_ipv6() - check for MLD reports * @skb: the ethernet frame destined for the mesh * * This call might reallocate skb data. @@ -695,7 +699,8 @@ static bool batadv_mcast_is_report_ipv6(struct sk_buff *skb) } /** - * batadv_mcast_forw_mode_check_ipv6 - check for optimized forwarding potential + * batadv_mcast_forw_mode_check_ipv6() - check for optimized forwarding + * potential * @bat_priv: the bat priv with all the soft interface information * @skb: the IPv6 packet to check * @is_unsnoopable: stores whether the destination is snoopable @@ -736,7 +741,7 @@ static int batadv_mcast_forw_mode_check_ipv6(struct batadv_priv *bat_priv, } /** - * batadv_mcast_forw_mode_check - check for optimized forwarding potential + * batadv_mcast_forw_mode_check() - check for optimized forwarding potential * @bat_priv: the bat priv with all the soft interface information * @skb: the multicast frame to check * @is_unsnoopable: stores whether the destination is snoopable @@ -774,7 +779,7 @@ static int batadv_mcast_forw_mode_check(struct batadv_priv *bat_priv, } /** - * batadv_mcast_forw_want_all_ip_count - count nodes with unspecific mcast + * batadv_mcast_forw_want_all_ip_count() - count nodes with unspecific mcast * interest * @bat_priv: the bat priv with all the soft interface information * @ethhdr: ethernet header of a packet @@ -798,7 +803,7 @@ static int batadv_mcast_forw_want_all_ip_count(struct batadv_priv *bat_priv, } /** - * batadv_mcast_forw_tt_node_get - get a multicast tt node + * batadv_mcast_forw_tt_node_get() - get a multicast tt node * @bat_priv: the bat priv with all the soft interface information * @ethhdr: the ether header containing the multicast destination * @@ -814,7 +819,7 @@ batadv_mcast_forw_tt_node_get(struct batadv_priv *bat_priv, } /** - * batadv_mcast_forw_ipv4_node_get - get a node with an ipv4 flag + * batadv_mcast_forw_ipv4_node_get() - get a node with an ipv4 flag * @bat_priv: the bat priv with all the soft interface information * * Return: an orig_node which has the BATADV_MCAST_WANT_ALL_IPV4 flag set and @@ -841,7 +846,7 @@ batadv_mcast_forw_ipv4_node_get(struct batadv_priv *bat_priv) } /** - * batadv_mcast_forw_ipv6_node_get - get a node with an ipv6 flag + * batadv_mcast_forw_ipv6_node_get() - get a node with an ipv6 flag * @bat_priv: the bat priv with all the soft interface information * * Return: an orig_node which has the BATADV_MCAST_WANT_ALL_IPV6 flag set @@ -868,7 +873,7 @@ batadv_mcast_forw_ipv6_node_get(struct batadv_priv *bat_priv) } /** - * batadv_mcast_forw_ip_node_get - get a node with an ipv4/ipv6 flag + * batadv_mcast_forw_ip_node_get() - get a node with an ipv4/ipv6 flag * @bat_priv: the bat priv with all the soft interface information * @ethhdr: an ethernet header to determine the protocol family from * @@ -892,7 +897,7 @@ batadv_mcast_forw_ip_node_get(struct batadv_priv *bat_priv, } /** - * batadv_mcast_forw_unsnoop_node_get - get a node with an unsnoopable flag + * batadv_mcast_forw_unsnoop_node_get() - get a node with an unsnoopable flag * @bat_priv: the bat priv with all the soft interface information * * Return: an orig_node which has the BATADV_MCAST_WANT_ALL_UNSNOOPABLES flag @@ -919,7 +924,7 @@ batadv_mcast_forw_unsnoop_node_get(struct batadv_priv *bat_priv) } /** - * batadv_mcast_forw_mode - check on how to forward a multicast packet + * batadv_mcast_forw_mode() - check on how to forward a multicast packet * @bat_priv: the bat priv with all the soft interface information * @skb: The multicast packet to check * @orig: an originator to be set to forward the skb to @@ -973,7 +978,7 @@ batadv_mcast_forw_mode(struct batadv_priv *bat_priv, struct sk_buff *skb, } /** - * batadv_mcast_want_unsnoop_update - update unsnoop counter and list + * batadv_mcast_want_unsnoop_update() - update unsnoop counter and list * @bat_priv: the bat priv with all the soft interface information * @orig: the orig_node which multicast state might have changed of * @mcast_flags: flags indicating the new multicast state @@ -1018,7 +1023,7 @@ static void batadv_mcast_want_unsnoop_update(struct batadv_priv *bat_priv, } /** - * batadv_mcast_want_ipv4_update - update want-all-ipv4 counter and list + * batadv_mcast_want_ipv4_update() - update want-all-ipv4 counter and list * @bat_priv: the bat priv with all the soft interface information * @orig: the orig_node which multicast state might have changed of * @mcast_flags: flags indicating the new multicast state @@ -1063,7 +1068,7 @@ static void batadv_mcast_want_ipv4_update(struct batadv_priv *bat_priv, } /** - * batadv_mcast_want_ipv6_update - update want-all-ipv6 counter and list + * batadv_mcast_want_ipv6_update() - update want-all-ipv6 counter and list * @bat_priv: the bat priv with all the soft interface information * @orig: the orig_node which multicast state might have changed of * @mcast_flags: flags indicating the new multicast state @@ -1108,7 +1113,7 @@ static void batadv_mcast_want_ipv6_update(struct batadv_priv *bat_priv, } /** - * batadv_mcast_tvlv_ogm_handler - process incoming multicast tvlv container + * batadv_mcast_tvlv_ogm_handler() - process incoming multicast tvlv container * @bat_priv: the bat priv with all the soft interface information * @orig: the orig_node of the ogm * @flags: flags indicating the tvlv state (see batadv_tvlv_handler_flags) @@ -1164,7 +1169,7 @@ static void batadv_mcast_tvlv_ogm_handler(struct batadv_priv *bat_priv, } /** - * batadv_mcast_init - initialize the multicast optimizations structures + * batadv_mcast_init() - initialize the multicast optimizations structures * @bat_priv: the bat priv with all the soft interface information */ void batadv_mcast_init(struct batadv_priv *bat_priv) @@ -1179,7 +1184,7 @@ void batadv_mcast_init(struct batadv_priv *bat_priv) #ifdef CONFIG_BATMAN_ADV_DEBUGFS /** - * batadv_mcast_flags_print_header - print own mcast flags to debugfs table + * batadv_mcast_flags_print_header() - print own mcast flags to debugfs table * @bat_priv: the bat priv with all the soft interface information * @seq: debugfs table seq_file struct * @@ -1220,7 +1225,7 @@ static void batadv_mcast_flags_print_header(struct batadv_priv *bat_priv, } /** - * batadv_mcast_flags_seq_print_text - print the mcast flags of other nodes + * batadv_mcast_flags_seq_print_text() - print the mcast flags of other nodes * @seq: seq file to print on * @offset: not used * @@ -1281,7 +1286,7 @@ int batadv_mcast_flags_seq_print_text(struct seq_file *seq, void *offset) #endif /** - * batadv_mcast_free - free the multicast optimizations structures + * batadv_mcast_free() - free the multicast optimizations structures * @bat_priv: the bat priv with all the soft interface information */ void batadv_mcast_free(struct batadv_priv *bat_priv) @@ -1296,7 +1301,7 @@ void batadv_mcast_free(struct batadv_priv *bat_priv) } /** - * batadv_mcast_purge_orig - reset originator global mcast state modifications + * batadv_mcast_purge_orig() - reset originator global mcast state modifications * @orig: the originator which is going to get purged */ void batadv_mcast_purge_orig(struct batadv_orig_node *orig) diff --git a/net/batman-adv/multicast.h b/net/batman-adv/multicast.h index 2a78cddab0e9..3ac06337ab71 100644 --- a/net/batman-adv/multicast.h +++ b/net/batman-adv/multicast.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2014-2017 B.A.T.M.A.N. contributors: * * Linus Lüssing @@ -25,15 +26,21 @@ struct sk_buff; /** * enum batadv_forw_mode - the way a packet should be forwarded as - * @BATADV_FORW_ALL: forward the packet to all nodes (currently via classic - * flooding) - * @BATADV_FORW_SINGLE: forward the packet to a single node (currently via the - * BATMAN unicast routing protocol) - * @BATADV_FORW_NONE: don't forward, drop it */ enum batadv_forw_mode { + /** + * @BATADV_FORW_ALL: forward the packet to all nodes (currently via + * classic flooding) + */ BATADV_FORW_ALL, + + /** + * @BATADV_FORW_SINGLE: forward the packet to a single node (currently + * via the BATMAN unicast routing protocol) + */ BATADV_FORW_SINGLE, + + /** @BATADV_FORW_NONE: don't forward, drop it */ BATADV_FORW_NONE, }; diff --git a/net/batman-adv/netlink.c b/net/batman-adv/netlink.c index ab13b4d58733..103d4bdcdbdb 100644 --- a/net/batman-adv/netlink.c +++ b/net/batman-adv/netlink.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2016-2017 B.A.T.M.A.N. contributors: * * Matthias Schiffer @@ -23,8 +24,8 @@ #include <linux/cache.h> #include <linux/errno.h> #include <linux/export.h> -#include <linux/fs.h> #include <linux/genetlink.h> +#include <linux/gfp.h> #include <linux/if_ether.h> #include <linux/init.h> #include <linux/kernel.h> @@ -99,7 +100,7 @@ static const struct nla_policy batadv_netlink_policy[NUM_BATADV_ATTR] = { }; /** - * batadv_netlink_get_ifindex - Extract an interface index from a message + * batadv_netlink_get_ifindex() - Extract an interface index from a message * @nlh: Message header * @attrtype: Attribute which holds an interface index * @@ -114,7 +115,7 @@ batadv_netlink_get_ifindex(const struct nlmsghdr *nlh, int attrtype) } /** - * batadv_netlink_mesh_info_put - fill in generic information about mesh + * batadv_netlink_mesh_info_put() - fill in generic information about mesh * interface * @msg: netlink message to be sent back * @soft_iface: interface for which the data should be taken @@ -169,7 +170,7 @@ batadv_netlink_mesh_info_put(struct sk_buff *msg, struct net_device *soft_iface) } /** - * batadv_netlink_get_mesh_info - handle incoming BATADV_CMD_GET_MESH_INFO + * batadv_netlink_get_mesh_info() - handle incoming BATADV_CMD_GET_MESH_INFO * netlink request * @skb: received netlink message * @info: receiver information @@ -230,7 +231,7 @@ batadv_netlink_get_mesh_info(struct sk_buff *skb, struct genl_info *info) } /** - * batadv_netlink_tp_meter_put - Fill information of started tp_meter session + * batadv_netlink_tp_meter_put() - Fill information of started tp_meter session * @msg: netlink message to be sent back * @cookie: tp meter session cookie * @@ -246,7 +247,7 @@ batadv_netlink_tp_meter_put(struct sk_buff *msg, u32 cookie) } /** - * batadv_netlink_tpmeter_notify - send tp_meter result via netlink to client + * batadv_netlink_tpmeter_notify() - send tp_meter result via netlink to client * @bat_priv: the bat priv with all the soft interface information * @dst: destination of tp_meter session * @result: reason for tp meter session stop @@ -309,7 +310,7 @@ err_genlmsg: } /** - * batadv_netlink_tp_meter_start - Start a new tp_meter session + * batadv_netlink_tp_meter_start() - Start a new tp_meter session * @skb: received netlink message * @info: receiver information * @@ -386,7 +387,7 @@ batadv_netlink_tp_meter_start(struct sk_buff *skb, struct genl_info *info) } /** - * batadv_netlink_tp_meter_start - Cancel a running tp_meter session + * batadv_netlink_tp_meter_start() - Cancel a running tp_meter session * @skb: received netlink message * @info: receiver information * @@ -431,7 +432,7 @@ out: } /** - * batadv_netlink_dump_hardif_entry - Dump one hard interface into a message + * batadv_netlink_dump_hardif_entry() - Dump one hard interface into a message * @msg: Netlink message to dump into * @portid: Port making netlink request * @seq: Sequence number of netlink message @@ -473,7 +474,7 @@ batadv_netlink_dump_hardif_entry(struct sk_buff *msg, u32 portid, u32 seq, } /** - * batadv_netlink_dump_hardifs - Dump all hard interface into a messages + * batadv_netlink_dump_hardifs() - Dump all hard interface into a messages * @msg: Netlink message to dump into * @cb: Parameters from query * @@ -620,7 +621,7 @@ struct genl_family batadv_netlink_family __ro_after_init = { }; /** - * batadv_netlink_register - register batadv genl netlink family + * batadv_netlink_register() - register batadv genl netlink family */ void __init batadv_netlink_register(void) { @@ -632,7 +633,7 @@ void __init batadv_netlink_register(void) } /** - * batadv_netlink_unregister - unregister batadv genl netlink family + * batadv_netlink_unregister() - unregister batadv genl netlink family */ void batadv_netlink_unregister(void) { diff --git a/net/batman-adv/netlink.h b/net/batman-adv/netlink.h index f1cd8c5da966..0e7e57b69b54 100644 --- a/net/batman-adv/netlink.h +++ b/net/batman-adv/netlink.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2016-2017 B.A.T.M.A.N. contributors: * * Matthias Schiffer diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c index 3604d7899e2c..3758be7fd881 100644 --- a/net/batman-adv/network-coding.c +++ b/net/batman-adv/network-coding.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2012-2017 B.A.T.M.A.N. contributors: * * Martin Hundebøll, Jeppe Ledet-Pedersen @@ -25,7 +26,7 @@ #include <linux/debugfs.h> #include <linux/errno.h> #include <linux/etherdevice.h> -#include <linux/fs.h> +#include <linux/gfp.h> #include <linux/if_ether.h> #include <linux/if_packet.h> #include <linux/init.h> @@ -35,6 +36,7 @@ #include <linux/kref.h> #include <linux/list.h> #include <linux/lockdep.h> +#include <linux/net.h> #include <linux/netdevice.h> #include <linux/printk.h> #include <linux/random.h> @@ -65,7 +67,7 @@ static int batadv_nc_recv_coded_packet(struct sk_buff *skb, struct batadv_hard_iface *recv_if); /** - * batadv_nc_init - one-time initialization for network coding + * batadv_nc_init() - one-time initialization for network coding * * Return: 0 on success or negative error number in case of failure */ @@ -81,7 +83,7 @@ int __init batadv_nc_init(void) } /** - * batadv_nc_start_timer - initialise the nc periodic worker + * batadv_nc_start_timer() - initialise the nc periodic worker * @bat_priv: the bat priv with all the soft interface information */ static void batadv_nc_start_timer(struct batadv_priv *bat_priv) @@ -91,7 +93,7 @@ static void batadv_nc_start_timer(struct batadv_priv *bat_priv) } /** - * batadv_nc_tvlv_container_update - update the network coding tvlv container + * batadv_nc_tvlv_container_update() - update the network coding tvlv container * after network coding setting change * @bat_priv: the bat priv with all the soft interface information */ @@ -113,7 +115,7 @@ static void batadv_nc_tvlv_container_update(struct batadv_priv *bat_priv) } /** - * batadv_nc_status_update - update the network coding tvlv container after + * batadv_nc_status_update() - update the network coding tvlv container after * network coding setting change * @net_dev: the soft interface net device */ @@ -125,7 +127,7 @@ void batadv_nc_status_update(struct net_device *net_dev) } /** - * batadv_nc_tvlv_ogm_handler_v1 - process incoming nc tvlv container + * batadv_nc_tvlv_ogm_handler_v1() - process incoming nc tvlv container * @bat_priv: the bat priv with all the soft interface information * @orig: the orig_node of the ogm * @flags: flags indicating the tvlv state (see batadv_tvlv_handler_flags) @@ -144,7 +146,7 @@ static void batadv_nc_tvlv_ogm_handler_v1(struct batadv_priv *bat_priv, } /** - * batadv_nc_mesh_init - initialise coding hash table and start house keeping + * batadv_nc_mesh_init() - initialise coding hash table and start house keeping * @bat_priv: the bat priv with all the soft interface information * * Return: 0 on success or negative error number in case of failure @@ -185,7 +187,7 @@ err: } /** - * batadv_nc_init_bat_priv - initialise the nc specific bat_priv variables + * batadv_nc_init_bat_priv() - initialise the nc specific bat_priv variables * @bat_priv: the bat priv with all the soft interface information */ void batadv_nc_init_bat_priv(struct batadv_priv *bat_priv) @@ -197,7 +199,7 @@ void batadv_nc_init_bat_priv(struct batadv_priv *bat_priv) } /** - * batadv_nc_init_orig - initialise the nc fields of an orig_node + * batadv_nc_init_orig() - initialise the nc fields of an orig_node * @orig_node: the orig_node which is going to be initialised */ void batadv_nc_init_orig(struct batadv_orig_node *orig_node) @@ -209,8 +211,8 @@ void batadv_nc_init_orig(struct batadv_orig_node *orig_node) } /** - * batadv_nc_node_release - release nc_node from lists and queue for free after - * rcu grace period + * batadv_nc_node_release() - release nc_node from lists and queue for free + * after rcu grace period * @ref: kref pointer of the nc_node */ static void batadv_nc_node_release(struct kref *ref) @@ -224,7 +226,7 @@ static void batadv_nc_node_release(struct kref *ref) } /** - * batadv_nc_node_put - decrement the nc_node refcounter and possibly + * batadv_nc_node_put() - decrement the nc_node refcounter and possibly * release it * @nc_node: nc_node to be free'd */ @@ -234,8 +236,8 @@ static void batadv_nc_node_put(struct batadv_nc_node *nc_node) } /** - * batadv_nc_path_release - release nc_path from lists and queue for free after - * rcu grace period + * batadv_nc_path_release() - release nc_path from lists and queue for free + * after rcu grace period * @ref: kref pointer of the nc_path */ static void batadv_nc_path_release(struct kref *ref) @@ -248,7 +250,7 @@ static void batadv_nc_path_release(struct kref *ref) } /** - * batadv_nc_path_put - decrement the nc_path refcounter and possibly + * batadv_nc_path_put() - decrement the nc_path refcounter and possibly * release it * @nc_path: nc_path to be free'd */ @@ -258,7 +260,7 @@ static void batadv_nc_path_put(struct batadv_nc_path *nc_path) } /** - * batadv_nc_packet_free - frees nc packet + * batadv_nc_packet_free() - frees nc packet * @nc_packet: the nc packet to free * @dropped: whether the packet is freed because is is dropped */ @@ -275,7 +277,7 @@ static void batadv_nc_packet_free(struct batadv_nc_packet *nc_packet, } /** - * batadv_nc_to_purge_nc_node - checks whether an nc node has to be purged + * batadv_nc_to_purge_nc_node() - checks whether an nc node has to be purged * @bat_priv: the bat priv with all the soft interface information * @nc_node: the nc node to check * @@ -291,7 +293,7 @@ static bool batadv_nc_to_purge_nc_node(struct batadv_priv *bat_priv, } /** - * batadv_nc_to_purge_nc_path_coding - checks whether an nc path has timed out + * batadv_nc_to_purge_nc_path_coding() - checks whether an nc path has timed out * @bat_priv: the bat priv with all the soft interface information * @nc_path: the nc path to check * @@ -311,7 +313,8 @@ static bool batadv_nc_to_purge_nc_path_coding(struct batadv_priv *bat_priv, } /** - * batadv_nc_to_purge_nc_path_decoding - checks whether an nc path has timed out + * batadv_nc_to_purge_nc_path_decoding() - checks whether an nc path has timed + * out * @bat_priv: the bat priv with all the soft interface information * @nc_path: the nc path to check * @@ -331,7 +334,7 @@ static bool batadv_nc_to_purge_nc_path_decoding(struct batadv_priv *bat_priv, } /** - * batadv_nc_purge_orig_nc_nodes - go through list of nc nodes and purge stale + * batadv_nc_purge_orig_nc_nodes() - go through list of nc nodes and purge stale * entries * @bat_priv: the bat priv with all the soft interface information * @list: list of nc nodes @@ -369,7 +372,7 @@ batadv_nc_purge_orig_nc_nodes(struct batadv_priv *bat_priv, } /** - * batadv_nc_purge_orig - purges all nc node data attached of the given + * batadv_nc_purge_orig() - purges all nc node data attached of the given * originator * @bat_priv: the bat priv with all the soft interface information * @orig_node: orig_node with the nc node entries to be purged @@ -395,8 +398,8 @@ void batadv_nc_purge_orig(struct batadv_priv *bat_priv, } /** - * batadv_nc_purge_orig_hash - traverse entire originator hash to check if they - * have timed out nc nodes + * batadv_nc_purge_orig_hash() - traverse entire originator hash to check if + * they have timed out nc nodes * @bat_priv: the bat priv with all the soft interface information */ static void batadv_nc_purge_orig_hash(struct batadv_priv *bat_priv) @@ -422,7 +425,7 @@ static void batadv_nc_purge_orig_hash(struct batadv_priv *bat_priv) } /** - * batadv_nc_purge_paths - traverse all nc paths part of the hash and remove + * batadv_nc_purge_paths() - traverse all nc paths part of the hash and remove * unused ones * @bat_priv: the bat priv with all the soft interface information * @hash: hash table containing the nc paths to check @@ -481,7 +484,7 @@ static void batadv_nc_purge_paths(struct batadv_priv *bat_priv, } /** - * batadv_nc_hash_key_gen - computes the nc_path hash key + * batadv_nc_hash_key_gen() - computes the nc_path hash key * @key: buffer to hold the final hash key * @src: source ethernet mac address going into the hash key * @dst: destination ethernet mac address going into the hash key @@ -494,7 +497,7 @@ static void batadv_nc_hash_key_gen(struct batadv_nc_path *key, const char *src, } /** - * batadv_nc_hash_choose - compute the hash value for an nc path + * batadv_nc_hash_choose() - compute the hash value for an nc path * @data: data to hash * @size: size of the hash table * @@ -512,7 +515,7 @@ static u32 batadv_nc_hash_choose(const void *data, u32 size) } /** - * batadv_nc_hash_compare - comparing function used in the network coding hash + * batadv_nc_hash_compare() - comparing function used in the network coding hash * tables * @node: node in the local table * @data2: second object to compare the node to @@ -538,7 +541,7 @@ static bool batadv_nc_hash_compare(const struct hlist_node *node, } /** - * batadv_nc_hash_find - search for an existing nc path and return it + * batadv_nc_hash_find() - search for an existing nc path and return it * @hash: hash table containing the nc path * @data: search key * @@ -575,7 +578,7 @@ batadv_nc_hash_find(struct batadv_hashtable *hash, } /** - * batadv_nc_send_packet - send non-coded packet and free nc_packet struct + * batadv_nc_send_packet() - send non-coded packet and free nc_packet struct * @nc_packet: the nc packet to send */ static void batadv_nc_send_packet(struct batadv_nc_packet *nc_packet) @@ -586,7 +589,7 @@ static void batadv_nc_send_packet(struct batadv_nc_packet *nc_packet) } /** - * batadv_nc_sniffed_purge - Checks timestamp of given sniffed nc_packet. + * batadv_nc_sniffed_purge() - Checks timestamp of given sniffed nc_packet. * @bat_priv: the bat priv with all the soft interface information * @nc_path: the nc path the packet belongs to * @nc_packet: the nc packet to be checked @@ -625,7 +628,7 @@ out: } /** - * batadv_nc_fwd_flush - Checks the timestamp of the given nc packet. + * batadv_nc_fwd_flush() - Checks the timestamp of the given nc packet. * @bat_priv: the bat priv with all the soft interface information * @nc_path: the nc path the packet belongs to * @nc_packet: the nc packet to be checked @@ -663,8 +666,8 @@ static bool batadv_nc_fwd_flush(struct batadv_priv *bat_priv, } /** - * batadv_nc_process_nc_paths - traverse given nc packet pool and free timed out - * nc packets + * batadv_nc_process_nc_paths() - traverse given nc packet pool and free timed + * out nc packets * @bat_priv: the bat priv with all the soft interface information * @hash: to be processed hash table * @process_fn: Function called to process given nc packet. Should return true @@ -709,7 +712,8 @@ batadv_nc_process_nc_paths(struct batadv_priv *bat_priv, } /** - * batadv_nc_worker - periodic task for house keeping related to network coding + * batadv_nc_worker() - periodic task for house keeping related to network + * coding * @work: kernel work struct */ static void batadv_nc_worker(struct work_struct *work) @@ -749,8 +753,8 @@ static void batadv_nc_worker(struct work_struct *work) } /** - * batadv_can_nc_with_orig - checks whether the given orig node is suitable for - * coding or not + * batadv_can_nc_with_orig() - checks whether the given orig node is suitable + * for coding or not * @bat_priv: the bat priv with all the soft interface information * @orig_node: neighboring orig node which may be used as nc candidate * @ogm_packet: incoming ogm packet also used for the checks @@ -790,7 +794,7 @@ static bool batadv_can_nc_with_orig(struct batadv_priv *bat_priv, } /** - * batadv_nc_find_nc_node - search for an existing nc node and return it + * batadv_nc_find_nc_node() - search for an existing nc node and return it * @orig_node: orig node originating the ogm packet * @orig_neigh_node: neighboring orig node from which we received the ogm packet * (can be equal to orig_node) @@ -830,7 +834,7 @@ batadv_nc_find_nc_node(struct batadv_orig_node *orig_node, } /** - * batadv_nc_get_nc_node - retrieves an nc node or creates the entry if it was + * batadv_nc_get_nc_node() - retrieves an nc node or creates the entry if it was * not found * @bat_priv: the bat priv with all the soft interface information * @orig_node: orig node originating the ogm packet @@ -890,7 +894,7 @@ batadv_nc_get_nc_node(struct batadv_priv *bat_priv, } /** - * batadv_nc_update_nc_node - updates stored incoming and outgoing nc node + * batadv_nc_update_nc_node() - updates stored incoming and outgoing nc node * structs (best called on incoming OGMs) * @bat_priv: the bat priv with all the soft interface information * @orig_node: orig node originating the ogm packet @@ -945,7 +949,7 @@ out: } /** - * batadv_nc_get_path - get existing nc_path or allocate a new one + * batadv_nc_get_path() - get existing nc_path or allocate a new one * @bat_priv: the bat priv with all the soft interface information * @hash: hash table containing the nc path * @src: ethernet source address - first half of the nc path search key @@ -1006,7 +1010,7 @@ static struct batadv_nc_path *batadv_nc_get_path(struct batadv_priv *bat_priv, } /** - * batadv_nc_random_weight_tq - scale the receivers TQ-value to avoid unfair + * batadv_nc_random_weight_tq() - scale the receivers TQ-value to avoid unfair * selection of a receiver with slightly lower TQ than the other * @tq: to be weighted tq value * @@ -1029,7 +1033,7 @@ static u8 batadv_nc_random_weight_tq(u8 tq) } /** - * batadv_nc_memxor - XOR destination with source + * batadv_nc_memxor() - XOR destination with source * @dst: byte array to XOR into * @src: byte array to XOR from * @len: length of destination array @@ -1043,7 +1047,7 @@ static void batadv_nc_memxor(char *dst, const char *src, unsigned int len) } /** - * batadv_nc_code_packets - code a received unicast_packet with an nc packet + * batadv_nc_code_packets() - code a received unicast_packet with an nc packet * into a coded_packet and send it * @bat_priv: the bat priv with all the soft interface information * @skb: data skb to forward @@ -1236,7 +1240,7 @@ out: } /** - * batadv_nc_skb_coding_possible - true if a decoded skb is available at dst. + * batadv_nc_skb_coding_possible() - true if a decoded skb is available at dst. * @skb: data skb to forward * @dst: destination mac address of the other skb to code with * @src: source mac address of skb @@ -1260,7 +1264,7 @@ static bool batadv_nc_skb_coding_possible(struct sk_buff *skb, u8 *dst, u8 *src) } /** - * batadv_nc_path_search - Find the coding path matching in_nc_node and + * batadv_nc_path_search() - Find the coding path matching in_nc_node and * out_nc_node to retrieve a buffered packet that can be used for coding. * @bat_priv: the bat priv with all the soft interface information * @in_nc_node: pointer to skb next hop's neighbor nc node @@ -1328,8 +1332,8 @@ batadv_nc_path_search(struct batadv_priv *bat_priv, } /** - * batadv_nc_skb_src_search - Loops through the list of neighoring nodes of the - * skb's sender (may be equal to the originator). + * batadv_nc_skb_src_search() - Loops through the list of neighoring nodes of + * the skb's sender (may be equal to the originator). * @bat_priv: the bat priv with all the soft interface information * @skb: data skb to forward * @eth_dst: next hop mac address of skb @@ -1374,7 +1378,7 @@ batadv_nc_skb_src_search(struct batadv_priv *bat_priv, } /** - * batadv_nc_skb_store_before_coding - set the ethernet src and dst of the + * batadv_nc_skb_store_before_coding() - set the ethernet src and dst of the * unicast skb before it is stored for use in later decoding * @bat_priv: the bat priv with all the soft interface information * @skb: data skb to store @@ -1409,7 +1413,7 @@ static void batadv_nc_skb_store_before_coding(struct batadv_priv *bat_priv, } /** - * batadv_nc_skb_dst_search - Loops through list of neighboring nodes to dst. + * batadv_nc_skb_dst_search() - Loops through list of neighboring nodes to dst. * @skb: data skb to forward * @neigh_node: next hop to forward packet to * @ethhdr: pointer to the ethernet header inside the skb @@ -1467,7 +1471,7 @@ static bool batadv_nc_skb_dst_search(struct sk_buff *skb, } /** - * batadv_nc_skb_add_to_path - buffer skb for later encoding / decoding + * batadv_nc_skb_add_to_path() - buffer skb for later encoding / decoding * @skb: skb to add to path * @nc_path: path to add skb to * @neigh_node: next hop to forward packet to @@ -1502,7 +1506,7 @@ static bool batadv_nc_skb_add_to_path(struct sk_buff *skb, } /** - * batadv_nc_skb_forward - try to code a packet or add it to the coding packet + * batadv_nc_skb_forward() - try to code a packet or add it to the coding packet * buffer * @skb: data skb to forward * @neigh_node: next hop to forward packet to @@ -1559,8 +1563,8 @@ out: } /** - * batadv_nc_skb_store_for_decoding - save a clone of the skb which can be used - * when decoding coded packets + * batadv_nc_skb_store_for_decoding() - save a clone of the skb which can be + * used when decoding coded packets * @bat_priv: the bat priv with all the soft interface information * @skb: data skb to store */ @@ -1620,7 +1624,7 @@ out: } /** - * batadv_nc_skb_store_sniffed_unicast - check if a received unicast packet + * batadv_nc_skb_store_sniffed_unicast() - check if a received unicast packet * should be saved in the decoding buffer and, if so, store it there * @bat_priv: the bat priv with all the soft interface information * @skb: unicast skb to store @@ -1640,7 +1644,7 @@ void batadv_nc_skb_store_sniffed_unicast(struct batadv_priv *bat_priv, } /** - * batadv_nc_skb_decode_packet - decode given skb using the decode data stored + * batadv_nc_skb_decode_packet() - decode given skb using the decode data stored * in nc_packet * @bat_priv: the bat priv with all the soft interface information * @skb: unicast skb to decode @@ -1734,7 +1738,7 @@ batadv_nc_skb_decode_packet(struct batadv_priv *bat_priv, struct sk_buff *skb, } /** - * batadv_nc_find_decoding_packet - search through buffered decoding data to + * batadv_nc_find_decoding_packet() - search through buffered decoding data to * find the data needed to decode the coded packet * @bat_priv: the bat priv with all the soft interface information * @ethhdr: pointer to the ethernet header inside the coded packet @@ -1799,7 +1803,7 @@ batadv_nc_find_decoding_packet(struct batadv_priv *bat_priv, } /** - * batadv_nc_recv_coded_packet - try to decode coded packet and enqueue the + * batadv_nc_recv_coded_packet() - try to decode coded packet and enqueue the * resulting unicast packet * @skb: incoming coded packet * @recv_if: pointer to interface this packet was received on @@ -1874,7 +1878,7 @@ free_skb: } /** - * batadv_nc_mesh_free - clean up network coding memory + * batadv_nc_mesh_free() - clean up network coding memory * @bat_priv: the bat priv with all the soft interface information */ void batadv_nc_mesh_free(struct batadv_priv *bat_priv) @@ -1891,7 +1895,7 @@ void batadv_nc_mesh_free(struct batadv_priv *bat_priv) #ifdef CONFIG_BATMAN_ADV_DEBUGFS /** - * batadv_nc_nodes_seq_print_text - print the nc node information + * batadv_nc_nodes_seq_print_text() - print the nc node information * @seq: seq file to print on * @offset: not used * @@ -1954,7 +1958,7 @@ out: } /** - * batadv_nc_init_debugfs - create nc folder and related files in debugfs + * batadv_nc_init_debugfs() - create nc folder and related files in debugfs * @bat_priv: the bat priv with all the soft interface information * * Return: 0 on success or negative error number in case of failure diff --git a/net/batman-adv/network-coding.h b/net/batman-adv/network-coding.h index c66efb81d2f4..adaeafa4f71e 100644 --- a/net/batman-adv/network-coding.h +++ b/net/batman-adv/network-coding.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2012-2017 B.A.T.M.A.N. contributors: * * Martin Hundebøll, Jeppe Ledet-Pedersen diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c index 2967b86c13da..58a7d9274435 100644 --- a/net/batman-adv/originator.c +++ b/net/batman-adv/originator.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2009-2017 B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich @@ -21,7 +22,7 @@ #include <linux/atomic.h> #include <linux/errno.h> #include <linux/etherdevice.h> -#include <linux/fs.h> +#include <linux/gfp.h> #include <linux/jiffies.h> #include <linux/kernel.h> #include <linux/kref.h> @@ -30,10 +31,12 @@ #include <linux/netdevice.h> #include <linux/netlink.h> #include <linux/rculist.h> +#include <linux/rcupdate.h> #include <linux/seq_file.h> #include <linux/skbuff.h> #include <linux/slab.h> #include <linux/spinlock.h> +#include <linux/stddef.h> #include <linux/workqueue.h> #include <net/sock.h> #include <uapi/linux/batman_adv.h> @@ -55,10 +58,47 @@ /* hash class keys */ static struct lock_class_key batadv_orig_hash_lock_class_key; +/** + * batadv_orig_hash_find() - Find and return originator from orig_hash + * @bat_priv: the bat priv with all the soft interface information + * @data: mac address of the originator + * + * Return: orig_node (with increased refcnt), NULL on errors + */ +struct batadv_orig_node * +batadv_orig_hash_find(struct batadv_priv *bat_priv, const void *data) +{ + struct batadv_hashtable *hash = bat_priv->orig_hash; + struct hlist_head *head; + struct batadv_orig_node *orig_node, *orig_node_tmp = NULL; + int index; + + if (!hash) + return NULL; + + index = batadv_choose_orig(data, hash->size); + head = &hash->table[index]; + + rcu_read_lock(); + hlist_for_each_entry_rcu(orig_node, head, hash_entry) { + if (!batadv_compare_eth(orig_node, data)) + continue; + + if (!kref_get_unless_zero(&orig_node->refcount)) + continue; + + orig_node_tmp = orig_node; + break; + } + rcu_read_unlock(); + + return orig_node_tmp; +} + static void batadv_purge_orig(struct work_struct *work); /** - * batadv_compare_orig - comparing function used in the originator hash table + * batadv_compare_orig() - comparing function used in the originator hash table * @node: node in the local table * @data2: second object to compare the node to * @@ -73,7 +113,7 @@ bool batadv_compare_orig(const struct hlist_node *node, const void *data2) } /** - * batadv_orig_node_vlan_get - get an orig_node_vlan object + * batadv_orig_node_vlan_get() - get an orig_node_vlan object * @orig_node: the originator serving the VLAN * @vid: the VLAN identifier * @@ -104,7 +144,7 @@ batadv_orig_node_vlan_get(struct batadv_orig_node *orig_node, } /** - * batadv_orig_node_vlan_new - search and possibly create an orig_node_vlan + * batadv_orig_node_vlan_new() - search and possibly create an orig_node_vlan * object * @orig_node: the originator serving the VLAN * @vid: the VLAN identifier @@ -145,7 +185,7 @@ out: } /** - * batadv_orig_node_vlan_release - release originator-vlan object from lists + * batadv_orig_node_vlan_release() - release originator-vlan object from lists * and queue for free after rcu grace period * @ref: kref pointer of the originator-vlan object */ @@ -159,7 +199,7 @@ static void batadv_orig_node_vlan_release(struct kref *ref) } /** - * batadv_orig_node_vlan_put - decrement the refcounter and possibly release + * batadv_orig_node_vlan_put() - decrement the refcounter and possibly release * the originator-vlan object * @orig_vlan: the originator-vlan object to release */ @@ -168,6 +208,12 @@ void batadv_orig_node_vlan_put(struct batadv_orig_node_vlan *orig_vlan) kref_put(&orig_vlan->refcount, batadv_orig_node_vlan_release); } +/** + * batadv_originator_init() - Initialize all originator structures + * @bat_priv: the bat priv with all the soft interface information + * + * Return: 0 on success or negative error number in case of failure + */ int batadv_originator_init(struct batadv_priv *bat_priv) { if (bat_priv->orig_hash) @@ -193,7 +239,7 @@ err: } /** - * batadv_neigh_ifinfo_release - release neigh_ifinfo from lists and queue for + * batadv_neigh_ifinfo_release() - release neigh_ifinfo from lists and queue for * free after rcu grace period * @ref: kref pointer of the neigh_ifinfo */ @@ -210,7 +256,7 @@ static void batadv_neigh_ifinfo_release(struct kref *ref) } /** - * batadv_neigh_ifinfo_put - decrement the refcounter and possibly release + * batadv_neigh_ifinfo_put() - decrement the refcounter and possibly release * the neigh_ifinfo * @neigh_ifinfo: the neigh_ifinfo object to release */ @@ -220,7 +266,7 @@ void batadv_neigh_ifinfo_put(struct batadv_neigh_ifinfo *neigh_ifinfo) } /** - * batadv_hardif_neigh_release - release hardif neigh node from lists and + * batadv_hardif_neigh_release() - release hardif neigh node from lists and * queue for free after rcu grace period * @ref: kref pointer of the neigh_node */ @@ -240,7 +286,7 @@ static void batadv_hardif_neigh_release(struct kref *ref) } /** - * batadv_hardif_neigh_put - decrement the hardif neighbors refcounter + * batadv_hardif_neigh_put() - decrement the hardif neighbors refcounter * and possibly release it * @hardif_neigh: hardif neigh neighbor to free */ @@ -250,7 +296,7 @@ void batadv_hardif_neigh_put(struct batadv_hardif_neigh_node *hardif_neigh) } /** - * batadv_neigh_node_release - release neigh_node from lists and queue for + * batadv_neigh_node_release() - release neigh_node from lists and queue for * free after rcu grace period * @ref: kref pointer of the neigh_node */ @@ -275,7 +321,7 @@ static void batadv_neigh_node_release(struct kref *ref) } /** - * batadv_neigh_node_put - decrement the neighbors refcounter and possibly + * batadv_neigh_node_put() - decrement the neighbors refcounter and possibly * release it * @neigh_node: neigh neighbor to free */ @@ -285,7 +331,7 @@ void batadv_neigh_node_put(struct batadv_neigh_node *neigh_node) } /** - * batadv_orig_router_get - router to the originator depending on iface + * batadv_orig_router_get() - router to the originator depending on iface * @orig_node: the orig node for the router * @if_outgoing: the interface where the payload packet has been received or * the OGM should be sent to @@ -318,7 +364,7 @@ batadv_orig_router_get(struct batadv_orig_node *orig_node, } /** - * batadv_orig_ifinfo_get - find the ifinfo from an orig_node + * batadv_orig_ifinfo_get() - find the ifinfo from an orig_node * @orig_node: the orig node to be queried * @if_outgoing: the interface for which the ifinfo should be acquired * @@ -350,7 +396,7 @@ batadv_orig_ifinfo_get(struct batadv_orig_node *orig_node, } /** - * batadv_orig_ifinfo_new - search and possibly create an orig_ifinfo object + * batadv_orig_ifinfo_new() - search and possibly create an orig_ifinfo object * @orig_node: the orig node to be queried * @if_outgoing: the interface for which the ifinfo should be acquired * @@ -396,7 +442,7 @@ out: } /** - * batadv_neigh_ifinfo_get - find the ifinfo from an neigh_node + * batadv_neigh_ifinfo_get() - find the ifinfo from an neigh_node * @neigh: the neigh node to be queried * @if_outgoing: the interface for which the ifinfo should be acquired * @@ -429,7 +475,7 @@ batadv_neigh_ifinfo_get(struct batadv_neigh_node *neigh, } /** - * batadv_neigh_ifinfo_new - search and possibly create an neigh_ifinfo object + * batadv_neigh_ifinfo_new() - search and possibly create an neigh_ifinfo object * @neigh: the neigh node to be queried * @if_outgoing: the interface for which the ifinfo should be acquired * @@ -472,7 +518,7 @@ out: } /** - * batadv_neigh_node_get - retrieve a neighbour from the list + * batadv_neigh_node_get() - retrieve a neighbour from the list * @orig_node: originator which the neighbour belongs to * @hard_iface: the interface where this neighbour is connected to * @addr: the address of the neighbour @@ -509,7 +555,7 @@ batadv_neigh_node_get(const struct batadv_orig_node *orig_node, } /** - * batadv_hardif_neigh_create - create a hardif neighbour node + * batadv_hardif_neigh_create() - create a hardif neighbour node * @hard_iface: the interface this neighbour is connected to * @neigh_addr: the interface address of the neighbour to retrieve * @orig_node: originator object representing the neighbour @@ -555,7 +601,7 @@ out: } /** - * batadv_hardif_neigh_get_or_create - retrieve or create a hardif neighbour + * batadv_hardif_neigh_get_or_create() - retrieve or create a hardif neighbour * node * @hard_iface: the interface this neighbour is connected to * @neigh_addr: the interface address of the neighbour to retrieve @@ -579,7 +625,7 @@ batadv_hardif_neigh_get_or_create(struct batadv_hard_iface *hard_iface, } /** - * batadv_hardif_neigh_get - retrieve a hardif neighbour from the list + * batadv_hardif_neigh_get() - retrieve a hardif neighbour from the list * @hard_iface: the interface where this neighbour is connected to * @neigh_addr: the address of the neighbour * @@ -611,7 +657,7 @@ batadv_hardif_neigh_get(const struct batadv_hard_iface *hard_iface, } /** - * batadv_neigh_node_create - create a neigh node object + * batadv_neigh_node_create() - create a neigh node object * @orig_node: originator object representing the neighbour * @hard_iface: the interface where the neighbour is connected to * @neigh_addr: the mac address of the neighbour interface @@ -676,7 +722,7 @@ out: } /** - * batadv_neigh_node_get_or_create - retrieve or create a neigh node object + * batadv_neigh_node_get_or_create() - retrieve or create a neigh node object * @orig_node: originator object representing the neighbour * @hard_iface: the interface where the neighbour is connected to * @neigh_addr: the mac address of the neighbour interface @@ -700,7 +746,7 @@ batadv_neigh_node_get_or_create(struct batadv_orig_node *orig_node, #ifdef CONFIG_BATMAN_ADV_DEBUGFS /** - * batadv_hardif_neigh_seq_print_text - print the single hop neighbour list + * batadv_hardif_neigh_seq_print_text() - print the single hop neighbour list * @seq: neighbour table seq_file struct * @offset: not used * @@ -735,8 +781,8 @@ int batadv_hardif_neigh_seq_print_text(struct seq_file *seq, void *offset) #endif /** - * batadv_hardif_neigh_dump - Dump to netlink the neighbor infos for a specific - * outgoing interface + * batadv_hardif_neigh_dump() - Dump to netlink the neighbor infos for a + * specific outgoing interface * @msg: message to dump into * @cb: parameters for the dump * @@ -812,7 +858,7 @@ int batadv_hardif_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb) } /** - * batadv_orig_ifinfo_release - release orig_ifinfo from lists and queue for + * batadv_orig_ifinfo_release() - release orig_ifinfo from lists and queue for * free after rcu grace period * @ref: kref pointer of the orig_ifinfo */ @@ -835,7 +881,7 @@ static void batadv_orig_ifinfo_release(struct kref *ref) } /** - * batadv_orig_ifinfo_put - decrement the refcounter and possibly release + * batadv_orig_ifinfo_put() - decrement the refcounter and possibly release * the orig_ifinfo * @orig_ifinfo: the orig_ifinfo object to release */ @@ -845,7 +891,7 @@ void batadv_orig_ifinfo_put(struct batadv_orig_ifinfo *orig_ifinfo) } /** - * batadv_orig_node_free_rcu - free the orig_node + * batadv_orig_node_free_rcu() - free the orig_node * @rcu: rcu pointer of the orig_node */ static void batadv_orig_node_free_rcu(struct rcu_head *rcu) @@ -866,7 +912,7 @@ static void batadv_orig_node_free_rcu(struct rcu_head *rcu) } /** - * batadv_orig_node_release - release orig_node from lists and queue for + * batadv_orig_node_release() - release orig_node from lists and queue for * free after rcu grace period * @ref: kref pointer of the orig_node */ @@ -917,7 +963,7 @@ static void batadv_orig_node_release(struct kref *ref) } /** - * batadv_orig_node_put - decrement the orig node refcounter and possibly + * batadv_orig_node_put() - decrement the orig node refcounter and possibly * release it * @orig_node: the orig node to free */ @@ -926,6 +972,10 @@ void batadv_orig_node_put(struct batadv_orig_node *orig_node) kref_put(&orig_node->refcount, batadv_orig_node_release); } +/** + * batadv_originator_free() - Free all originator structures + * @bat_priv: the bat priv with all the soft interface information + */ void batadv_originator_free(struct batadv_priv *bat_priv) { struct batadv_hashtable *hash = bat_priv->orig_hash; @@ -959,7 +1009,7 @@ void batadv_originator_free(struct batadv_priv *bat_priv) } /** - * batadv_orig_node_new - creates a new orig_node + * batadv_orig_node_new() - creates a new orig_node * @bat_priv: the bat priv with all the soft interface information * @addr: the mac address of the originator * @@ -1038,7 +1088,7 @@ free_orig_node: } /** - * batadv_purge_neigh_ifinfo - purge obsolete ifinfo entries from neighbor + * batadv_purge_neigh_ifinfo() - purge obsolete ifinfo entries from neighbor * @bat_priv: the bat priv with all the soft interface information * @neigh: orig node which is to be checked */ @@ -1079,7 +1129,7 @@ batadv_purge_neigh_ifinfo(struct batadv_priv *bat_priv, } /** - * batadv_purge_orig_ifinfo - purge obsolete ifinfo entries from originator + * batadv_purge_orig_ifinfo() - purge obsolete ifinfo entries from originator * @bat_priv: the bat priv with all the soft interface information * @orig_node: orig node which is to be checked * @@ -1131,7 +1181,7 @@ batadv_purge_orig_ifinfo(struct batadv_priv *bat_priv, } /** - * batadv_purge_orig_neighbors - purges neighbors from originator + * batadv_purge_orig_neighbors() - purges neighbors from originator * @bat_priv: the bat priv with all the soft interface information * @orig_node: orig node which is to be checked * @@ -1189,7 +1239,7 @@ batadv_purge_orig_neighbors(struct batadv_priv *bat_priv, } /** - * batadv_find_best_neighbor - finds the best neighbor after purging + * batadv_find_best_neighbor() - finds the best neighbor after purging * @bat_priv: the bat priv with all the soft interface information * @orig_node: orig node which is to be checked * @if_outgoing: the interface for which the metric should be compared @@ -1224,7 +1274,7 @@ batadv_find_best_neighbor(struct batadv_priv *bat_priv, } /** - * batadv_purge_orig_node - purges obsolete information from an orig_node + * batadv_purge_orig_node() - purges obsolete information from an orig_node * @bat_priv: the bat priv with all the soft interface information * @orig_node: orig node which is to be checked * @@ -1341,12 +1391,24 @@ static void batadv_purge_orig(struct work_struct *work) msecs_to_jiffies(BATADV_ORIG_WORK_PERIOD)); } +/** + * batadv_purge_orig_ref() - Purge all outdated originators + * @bat_priv: the bat priv with all the soft interface information + */ void batadv_purge_orig_ref(struct batadv_priv *bat_priv) { _batadv_purge_orig(bat_priv); } #ifdef CONFIG_BATMAN_ADV_DEBUGFS + +/** + * batadv_orig_seq_print_text() - Print the originator table in a seq file + * @seq: seq file to print on + * @offset: not used + * + * Return: always 0 + */ int batadv_orig_seq_print_text(struct seq_file *seq, void *offset) { struct net_device *net_dev = (struct net_device *)seq->private; @@ -1376,7 +1438,7 @@ int batadv_orig_seq_print_text(struct seq_file *seq, void *offset) } /** - * batadv_orig_hardif_seq_print_text - writes originator infos for a specific + * batadv_orig_hardif_seq_print_text() - writes originator infos for a specific * outgoing interface * @seq: debugfs table seq_file struct * @offset: not used @@ -1423,7 +1485,7 @@ out: #endif /** - * batadv_orig_dump - Dump to netlink the originator infos for a specific + * batadv_orig_dump() - Dump to netlink the originator infos for a specific * outgoing interface * @msg: message to dump into * @cb: parameters for the dump @@ -1499,6 +1561,13 @@ int batadv_orig_dump(struct sk_buff *msg, struct netlink_callback *cb) return ret; } +/** + * batadv_orig_hash_add_if() - Add interface to originators in orig_hash + * @hard_iface: hard interface to add (already slave of the soft interface) + * @max_if_num: new number of interfaces + * + * Return: 0 on success or negative error number in case of failure + */ int batadv_orig_hash_add_if(struct batadv_hard_iface *hard_iface, int max_if_num) { @@ -1534,6 +1603,13 @@ err: return -ENOMEM; } +/** + * batadv_orig_hash_del_if() - Remove interface from originators in orig_hash + * @hard_iface: hard interface to remove (still slave of the soft interface) + * @max_if_num: new number of interfaces + * + * Return: 0 on success or negative error number in case of failure + */ int batadv_orig_hash_del_if(struct batadv_hard_iface *hard_iface, int max_if_num) { diff --git a/net/batman-adv/originator.h b/net/batman-adv/originator.h index d94220a6d21a..8e543a3cdc6c 100644 --- a/net/batman-adv/originator.h +++ b/net/batman-adv/originator.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2007-2017 B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich @@ -23,14 +24,8 @@ #include <linux/compiler.h> #include <linux/if_ether.h> #include <linux/jhash.h> -#include <linux/kref.h> -#include <linux/rculist.h> -#include <linux/rcupdate.h> -#include <linux/stddef.h> #include <linux/types.h> -#include "hash.h" - struct netlink_callback; struct seq_file; struct sk_buff; @@ -89,8 +84,13 @@ batadv_orig_node_vlan_get(struct batadv_orig_node *orig_node, unsigned short vid); void batadv_orig_node_vlan_put(struct batadv_orig_node_vlan *orig_vlan); -/* hashfunction to choose an entry in a hash table of given size - * hash algorithm from http://en.wikipedia.org/wiki/Hash_table +/** + * batadv_choose_orig() - Return the index of the orig entry in the hash table + * @data: mac address of the originator node + * @size: the size of the hash table + * + * Return: the hash index where the object represented by @data should be + * stored at. */ static inline u32 batadv_choose_orig(const void *data, u32 size) { @@ -100,34 +100,7 @@ static inline u32 batadv_choose_orig(const void *data, u32 size) return hash % size; } -static inline struct batadv_orig_node * -batadv_orig_hash_find(struct batadv_priv *bat_priv, const void *data) -{ - struct batadv_hashtable *hash = bat_priv->orig_hash; - struct hlist_head *head; - struct batadv_orig_node *orig_node, *orig_node_tmp = NULL; - int index; - - if (!hash) - return NULL; - - index = batadv_choose_orig(data, hash->size); - head = &hash->table[index]; - - rcu_read_lock(); - hlist_for_each_entry_rcu(orig_node, head, hash_entry) { - if (!batadv_compare_eth(orig_node, data)) - continue; - - if (!kref_get_unless_zero(&orig_node->refcount)) - continue; - - orig_node_tmp = orig_node; - break; - } - rcu_read_unlock(); - - return orig_node_tmp; -} +struct batadv_orig_node * +batadv_orig_hash_find(struct batadv_priv *bat_priv, const void *data); #endif /* _NET_BATMAN_ADV_ORIGINATOR_H_ */ diff --git a/net/batman-adv/packet.h b/net/batman-adv/packet.h index 8e8a5db197cb..dccbd4a6f019 100644 --- a/net/batman-adv/packet.h +++ b/net/batman-adv/packet.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2007-2017 B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich @@ -21,6 +22,12 @@ #include <asm/byteorder.h> #include <linux/types.h> +/** + * batadv_tp_is_error() - Check throughput meter return code for error + * @n: throughput meter return code + * + * Return: 0 when not error was detected, != 0 otherwise + */ #define batadv_tp_is_error(n) ((u8)(n) > 127 ? 1 : 0) /** @@ -88,7 +95,15 @@ enum batadv_iv_flags { BATADV_DIRECTLINK = BIT(2), }; -/* ICMP message types */ +/** + * enum batadv_icmp_packettype - ICMP message types + * @BATADV_ECHO_REPLY: success reply to BATADV_ECHO_REQUEST + * @BATADV_DESTINATION_UNREACHABLE: failure when route to destination not found + * @BATADV_ECHO_REQUEST: request BATADV_ECHO_REPLY from destination + * @BATADV_TTL_EXCEEDED: error after BATADV_ECHO_REQUEST traversed too many hops + * @BATADV_PARAMETER_PROBLEM: return code for malformed messages + * @BATADV_TP: throughput meter packet + */ enum batadv_icmp_packettype { BATADV_ECHO_REPLY = 0, BATADV_DESTINATION_UNREACHABLE = 3, @@ -136,7 +151,14 @@ enum batadv_vlan_flags { BATADV_VLAN_HAS_TAG = BIT(15), }; -/* claim frame types for the bridge loop avoidance */ +/** + * enum batadv_bla_claimframe - claim frame types for the bridge loop avoidance + * @BATADV_CLAIM_TYPE_CLAIM: claim of a client mac address + * @BATADV_CLAIM_TYPE_UNCLAIM: unclaim of a client mac address + * @BATADV_CLAIM_TYPE_ANNOUNCE: announcement of backbone with current crc + * @BATADV_CLAIM_TYPE_REQUEST: request of full claim table + * @BATADV_CLAIM_TYPE_LOOPDETECT: mesh-traversing loop detect packet + */ enum batadv_bla_claimframe { BATADV_CLAIM_TYPE_CLAIM = 0x00, BATADV_CLAIM_TYPE_UNCLAIM = 0x01, diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c index 40d9bf3e5bfe..eb835bde502a 100644 --- a/net/batman-adv/routing.c +++ b/net/batman-adv/routing.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2007-2017 B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich @@ -54,7 +55,7 @@ static int batadv_route_unicast_packet(struct sk_buff *skb, struct batadv_hard_iface *recv_if); /** - * _batadv_update_route - set the router for this originator + * _batadv_update_route() - set the router for this originator * @bat_priv: the bat priv with all the soft interface information * @orig_node: orig node which is to be configured * @recv_if: the receive interface for which this route is set @@ -118,7 +119,7 @@ static void _batadv_update_route(struct batadv_priv *bat_priv, } /** - * batadv_update_route - set the router for this originator + * batadv_update_route() - set the router for this originator * @bat_priv: the bat priv with all the soft interface information * @orig_node: orig node which is to be configured * @recv_if: the receive interface for which this route is set @@ -145,7 +146,7 @@ out: } /** - * batadv_window_protected - checks whether the host restarted and is in the + * batadv_window_protected() - checks whether the host restarted and is in the * protection time. * @bat_priv: the bat priv with all the soft interface information * @seq_num_diff: difference between the current/received sequence number and @@ -180,6 +181,14 @@ bool batadv_window_protected(struct batadv_priv *bat_priv, s32 seq_num_diff, return false; } +/** + * batadv_check_management_packet() - Check preconditions for management packets + * @skb: incoming packet buffer + * @hard_iface: incoming hard interface + * @header_len: minimal header length of packet type + * + * Return: true when management preconditions are met, false otherwise + */ bool batadv_check_management_packet(struct sk_buff *skb, struct batadv_hard_iface *hard_iface, int header_len) @@ -212,7 +221,7 @@ bool batadv_check_management_packet(struct sk_buff *skb, } /** - * batadv_recv_my_icmp_packet - receive an icmp packet locally + * batadv_recv_my_icmp_packet() - receive an icmp packet locally * @bat_priv: the bat priv with all the soft interface information * @skb: icmp packet to process * @@ -347,6 +356,13 @@ out: return ret; } +/** + * batadv_recv_icmp_packet() - Process incoming icmp packet + * @skb: incoming packet buffer + * @recv_if: incoming hard interface + * + * Return: NET_RX_SUCCESS on success or NET_RX_DROP in case of failure + */ int batadv_recv_icmp_packet(struct sk_buff *skb, struct batadv_hard_iface *recv_if) { @@ -440,7 +456,7 @@ free_skb: } /** - * batadv_check_unicast_packet - Check for malformed unicast packets + * batadv_check_unicast_packet() - Check for malformed unicast packets * @bat_priv: the bat priv with all the soft interface information * @skb: packet to check * @hdr_size: size of header to pull @@ -478,7 +494,7 @@ static int batadv_check_unicast_packet(struct batadv_priv *bat_priv, } /** - * batadv_last_bonding_get - Get last_bonding_candidate of orig_node + * batadv_last_bonding_get() - Get last_bonding_candidate of orig_node * @orig_node: originator node whose last bonding candidate should be retrieved * * Return: last bonding candidate of router or NULL if not found @@ -501,7 +517,7 @@ batadv_last_bonding_get(struct batadv_orig_node *orig_node) } /** - * batadv_last_bonding_replace - Replace last_bonding_candidate of orig_node + * batadv_last_bonding_replace() - Replace last_bonding_candidate of orig_node * @orig_node: originator node whose bonding candidates should be replaced * @new_candidate: new bonding candidate or NULL */ @@ -524,7 +540,7 @@ batadv_last_bonding_replace(struct batadv_orig_node *orig_node, } /** - * batadv_find_router - find a suitable router for this originator + * batadv_find_router() - find a suitable router for this originator * @bat_priv: the bat priv with all the soft interface information * @orig_node: the destination node * @recv_if: pointer to interface this packet was received on @@ -741,7 +757,7 @@ free_skb: } /** - * batadv_reroute_unicast_packet - update the unicast header for re-routing + * batadv_reroute_unicast_packet() - update the unicast header for re-routing * @bat_priv: the bat priv with all the soft interface information * @unicast_packet: the unicast header to be updated * @dst_addr: the payload destination @@ -904,7 +920,7 @@ static bool batadv_check_unicast_ttvn(struct batadv_priv *bat_priv, } /** - * batadv_recv_unhandled_unicast_packet - receive and process packets which + * batadv_recv_unhandled_unicast_packet() - receive and process packets which * are in the unicast number space but not yet known to the implementation * @skb: unicast tvlv packet to process * @recv_if: pointer to interface this packet was received on @@ -935,6 +951,13 @@ free_skb: return NET_RX_DROP; } +/** + * batadv_recv_unicast_packet() - Process incoming unicast packet + * @skb: incoming packet buffer + * @recv_if: incoming hard interface + * + * Return: NET_RX_SUCCESS on success or NET_RX_DROP in case of failure + */ int batadv_recv_unicast_packet(struct sk_buff *skb, struct batadv_hard_iface *recv_if) { @@ -1036,7 +1059,7 @@ free_skb: } /** - * batadv_recv_unicast_tvlv - receive and process unicast tvlv packets + * batadv_recv_unicast_tvlv() - receive and process unicast tvlv packets * @skb: unicast tvlv packet to process * @recv_if: pointer to interface this packet was received on * @@ -1090,7 +1113,7 @@ free_skb: } /** - * batadv_recv_frag_packet - process received fragment + * batadv_recv_frag_packet() - process received fragment * @skb: the received fragment * @recv_if: interface that the skb is received on * @@ -1155,6 +1178,13 @@ free_skb: return ret; } +/** + * batadv_recv_bcast_packet() - Process incoming broadcast packet + * @skb: incoming packet buffer + * @recv_if: incoming hard interface + * + * Return: NET_RX_SUCCESS on success or NET_RX_DROP in case of failure + */ int batadv_recv_bcast_packet(struct sk_buff *skb, struct batadv_hard_iface *recv_if) { diff --git a/net/batman-adv/routing.h b/net/batman-adv/routing.h index 5ede16c32f15..a1289bc5f115 100644 --- a/net/batman-adv/routing.h +++ b/net/batman-adv/routing.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2007-2017 B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c index 7895323fd2a7..2a5ab6f1076d 100644 --- a/net/batman-adv/send.c +++ b/net/batman-adv/send.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2007-2017 B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich @@ -23,7 +24,7 @@ #include <linux/byteorder/generic.h> #include <linux/errno.h> #include <linux/etherdevice.h> -#include <linux/fs.h> +#include <linux/gfp.h> #include <linux/if.h> #include <linux/if_ether.h> #include <linux/jiffies.h> @@ -54,7 +55,7 @@ static void batadv_send_outstanding_bcast_packet(struct work_struct *work); /** - * batadv_send_skb_packet - send an already prepared packet + * batadv_send_skb_packet() - send an already prepared packet * @skb: the packet to send * @hard_iface: the interface to use to send the broadcast packet * @dst_addr: the payload destination @@ -123,12 +124,30 @@ send_skb_err: return NET_XMIT_DROP; } +/** + * batadv_send_broadcast_skb() - Send broadcast packet via hard interface + * @skb: packet to be transmitted (with batadv header and no outer eth header) + * @hard_iface: outgoing interface + * + * Return: A negative errno code is returned on a failure. A success does not + * guarantee the frame will be transmitted as it may be dropped due + * to congestion or traffic shaping. + */ int batadv_send_broadcast_skb(struct sk_buff *skb, struct batadv_hard_iface *hard_iface) { return batadv_send_skb_packet(skb, hard_iface, batadv_broadcast_addr); } +/** + * batadv_send_unicast_skb() - Send unicast packet to neighbor + * @skb: packet to be transmitted (with batadv header and no outer eth header) + * @neigh: neighbor which is used as next hop to destination + * + * Return: A negative errno code is returned on a failure. A success does not + * guarantee the frame will be transmitted as it may be dropped due + * to congestion or traffic shaping. + */ int batadv_send_unicast_skb(struct sk_buff *skb, struct batadv_neigh_node *neigh) { @@ -153,7 +172,7 @@ int batadv_send_unicast_skb(struct sk_buff *skb, } /** - * batadv_send_skb_to_orig - Lookup next-hop and transmit skb. + * batadv_send_skb_to_orig() - Lookup next-hop and transmit skb. * @skb: Packet to be transmitted. * @orig_node: Final destination of the packet. * @recv_if: Interface used when receiving the packet (can be NULL). @@ -216,7 +235,7 @@ free_skb: } /** - * batadv_send_skb_push_fill_unicast - extend the buffer and initialize the + * batadv_send_skb_push_fill_unicast() - extend the buffer and initialize the * common fields for unicast packets * @skb: the skb carrying the unicast header to initialize * @hdr_size: amount of bytes to push at the beginning of the skb @@ -249,7 +268,7 @@ batadv_send_skb_push_fill_unicast(struct sk_buff *skb, int hdr_size, } /** - * batadv_send_skb_prepare_unicast - encapsulate an skb with a unicast header + * batadv_send_skb_prepare_unicast() - encapsulate an skb with a unicast header * @skb: the skb containing the payload to encapsulate * @orig_node: the destination node * @@ -264,7 +283,7 @@ static bool batadv_send_skb_prepare_unicast(struct sk_buff *skb, } /** - * batadv_send_skb_prepare_unicast_4addr - encapsulate an skb with a + * batadv_send_skb_prepare_unicast_4addr() - encapsulate an skb with a * unicast 4addr header * @bat_priv: the bat priv with all the soft interface information * @skb: the skb containing the payload to encapsulate @@ -308,7 +327,7 @@ out: } /** - * batadv_send_skb_unicast - encapsulate and send an skb via unicast + * batadv_send_skb_unicast() - encapsulate and send an skb via unicast * @bat_priv: the bat priv with all the soft interface information * @skb: payload to send * @packet_type: the batman unicast packet type to use @@ -378,7 +397,7 @@ out: } /** - * batadv_send_skb_via_tt_generic - send an skb via TT lookup + * batadv_send_skb_via_tt_generic() - send an skb via TT lookup * @bat_priv: the bat priv with all the soft interface information * @skb: payload to send * @packet_type: the batman unicast packet type to use @@ -425,7 +444,7 @@ int batadv_send_skb_via_tt_generic(struct batadv_priv *bat_priv, } /** - * batadv_send_skb_via_gw - send an skb via gateway lookup + * batadv_send_skb_via_gw() - send an skb via gateway lookup * @bat_priv: the bat priv with all the soft interface information * @skb: payload to send * @vid: the vid to be used to search the translation table @@ -452,7 +471,7 @@ int batadv_send_skb_via_gw(struct batadv_priv *bat_priv, struct sk_buff *skb, } /** - * batadv_forw_packet_free - free a forwarding packet + * batadv_forw_packet_free() - free a forwarding packet * @forw_packet: The packet to free * @dropped: whether the packet is freed because is is dropped * @@ -477,7 +496,7 @@ void batadv_forw_packet_free(struct batadv_forw_packet *forw_packet, } /** - * batadv_forw_packet_alloc - allocate a forwarding packet + * batadv_forw_packet_alloc() - allocate a forwarding packet * @if_incoming: The (optional) if_incoming to be grabbed * @if_outgoing: The (optional) if_outgoing to be grabbed * @queue_left: The (optional) queue counter to decrease @@ -543,7 +562,7 @@ err: } /** - * batadv_forw_packet_was_stolen - check whether someone stole this packet + * batadv_forw_packet_was_stolen() - check whether someone stole this packet * @forw_packet: the forwarding packet to check * * This function checks whether the given forwarding packet was claimed by @@ -558,7 +577,7 @@ batadv_forw_packet_was_stolen(struct batadv_forw_packet *forw_packet) } /** - * batadv_forw_packet_steal - claim a forw_packet for free() + * batadv_forw_packet_steal() - claim a forw_packet for free() * @forw_packet: the forwarding packet to steal * @lock: a key to the store to steal from (e.g. forw_{bat,bcast}_list_lock) * @@ -589,7 +608,7 @@ bool batadv_forw_packet_steal(struct batadv_forw_packet *forw_packet, } /** - * batadv_forw_packet_list_steal - claim a list of forward packets for free() + * batadv_forw_packet_list_steal() - claim a list of forward packets for free() * @forw_list: the to be stolen forward packets * @cleanup_list: a backup pointer, to be able to dispose the packet later * @hard_iface: the interface to steal forward packets from @@ -625,7 +644,7 @@ batadv_forw_packet_list_steal(struct hlist_head *forw_list, } /** - * batadv_forw_packet_list_free - free a list of forward packets + * batadv_forw_packet_list_free() - free a list of forward packets * @head: a list of to be freed forw_packets * * This function cancels the scheduling of any packet in the provided list, @@ -649,7 +668,7 @@ static void batadv_forw_packet_list_free(struct hlist_head *head) } /** - * batadv_forw_packet_queue - try to queue a forwarding packet + * batadv_forw_packet_queue() - try to queue a forwarding packet * @forw_packet: the forwarding packet to queue * @lock: a key to the store (e.g. forw_{bat,bcast}_list_lock) * @head: the shelve to queue it on (e.g. forw_{bat,bcast}_list) @@ -693,7 +712,7 @@ static void batadv_forw_packet_queue(struct batadv_forw_packet *forw_packet, } /** - * batadv_forw_packet_bcast_queue - try to queue a broadcast packet + * batadv_forw_packet_bcast_queue() - try to queue a broadcast packet * @bat_priv: the bat priv with all the soft interface information * @forw_packet: the forwarding packet to queue * @send_time: timestamp (jiffies) when the packet is to be sent @@ -712,7 +731,7 @@ batadv_forw_packet_bcast_queue(struct batadv_priv *bat_priv, } /** - * batadv_forw_packet_ogmv1_queue - try to queue an OGMv1 packet + * batadv_forw_packet_ogmv1_queue() - try to queue an OGMv1 packet * @bat_priv: the bat priv with all the soft interface information * @forw_packet: the forwarding packet to queue * @send_time: timestamp (jiffies) when the packet is to be sent @@ -730,7 +749,7 @@ void batadv_forw_packet_ogmv1_queue(struct batadv_priv *bat_priv, } /** - * batadv_add_bcast_packet_to_list - queue broadcast packet for multiple sends + * batadv_add_bcast_packet_to_list() - queue broadcast packet for multiple sends * @bat_priv: the bat priv with all the soft interface information * @skb: broadcast packet to add * @delay: number of jiffies to wait before sending @@ -790,7 +809,7 @@ err: } /** - * batadv_forw_packet_bcasts_left - check if a retransmission is necessary + * batadv_forw_packet_bcasts_left() - check if a retransmission is necessary * @forw_packet: the forwarding packet to check * @hard_iface: the interface to check on * @@ -818,7 +837,8 @@ batadv_forw_packet_bcasts_left(struct batadv_forw_packet *forw_packet, } /** - * batadv_forw_packet_bcasts_inc - increment retransmission counter of a packet + * batadv_forw_packet_bcasts_inc() - increment retransmission counter of a + * packet * @forw_packet: the packet to increase the counter for */ static void @@ -828,7 +848,7 @@ batadv_forw_packet_bcasts_inc(struct batadv_forw_packet *forw_packet) } /** - * batadv_forw_packet_is_rebroadcast - check packet for previous transmissions + * batadv_forw_packet_is_rebroadcast() - check packet for previous transmissions * @forw_packet: the packet to check * * Return: True if this packet was transmitted before, false otherwise. @@ -953,7 +973,7 @@ out: } /** - * batadv_purge_outstanding_packets - stop/purge scheduled bcast/OGMv1 packets + * batadv_purge_outstanding_packets() - stop/purge scheduled bcast/OGMv1 packets * @bat_priv: the bat priv with all the soft interface information * @hard_iface: the hard interface to cancel and purge bcast/ogm packets on * diff --git a/net/batman-adv/send.h b/net/batman-adv/send.h index a16b34f473ef..8c7399dd06ca 100644 --- a/net/batman-adv/send.h +++ b/net/batman-adv/send.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2007-2017 B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich @@ -76,7 +77,7 @@ int batadv_send_skb_via_gw(struct batadv_priv *bat_priv, struct sk_buff *skb, unsigned short vid); /** - * batadv_send_skb_via_tt - send an skb via TT lookup + * batadv_send_skb_via_tt() - send an skb via TT lookup * @bat_priv: the bat priv with all the soft interface information * @skb: the payload to send * @dst_hint: can be used to override the destination contained in the skb @@ -97,7 +98,7 @@ static inline int batadv_send_skb_via_tt(struct batadv_priv *bat_priv, } /** - * batadv_send_skb_via_tt_4addr - send an skb via TT lookup + * batadv_send_skb_via_tt_4addr() - send an skb via TT lookup * @bat_priv: the bat priv with all the soft interface information * @skb: the payload to send * @packet_subtype: the unicast 4addr packet subtype to use diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c index 9f673cdfecf8..1eb5555c5fe4 100644 --- a/net/batman-adv/soft-interface.c +++ b/net/batman-adv/soft-interface.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2007-2017 B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich @@ -26,7 +27,7 @@ #include <linux/errno.h> #include <linux/etherdevice.h> #include <linux/ethtool.h> -#include <linux/fs.h> +#include <linux/gfp.h> #include <linux/if_ether.h> #include <linux/if_vlan.h> #include <linux/jiffies.h> @@ -64,6 +65,13 @@ #include "sysfs.h" #include "translation-table.h" +/** + * batadv_skb_head_push() - Increase header size and move (push) head pointer + * @skb: packet buffer which should be modified + * @len: number of bytes to add + * + * Return: 0 on success or negative error number in case of failure + */ int batadv_skb_head_push(struct sk_buff *skb, unsigned int len) { int result; @@ -96,7 +104,7 @@ static int batadv_interface_release(struct net_device *dev) } /** - * batadv_sum_counter - Sum the cpu-local counters for index 'idx' + * batadv_sum_counter() - Sum the cpu-local counters for index 'idx' * @bat_priv: the bat priv with all the soft interface information * @idx: index of counter to sum up * @@ -169,7 +177,7 @@ static int batadv_interface_change_mtu(struct net_device *dev, int new_mtu) } /** - * batadv_interface_set_rx_mode - set the rx mode of a device + * batadv_interface_set_rx_mode() - set the rx mode of a device * @dev: registered network device to modify * * We do not actually need to set any rx filters for the virtual batman @@ -389,7 +397,7 @@ end: } /** - * batadv_interface_rx - receive ethernet frame on local batman-adv interface + * batadv_interface_rx() - receive ethernet frame on local batman-adv interface * @soft_iface: local interface which will receive the ethernet frame * @skb: ethernet frame for @soft_iface * @hdr_size: size of already parsed batman-adv header @@ -501,8 +509,8 @@ out: } /** - * batadv_softif_vlan_release - release vlan from lists and queue for free after - * rcu grace period + * batadv_softif_vlan_release() - release vlan from lists and queue for free + * after rcu grace period * @ref: kref pointer of the vlan object */ static void batadv_softif_vlan_release(struct kref *ref) @@ -519,7 +527,7 @@ static void batadv_softif_vlan_release(struct kref *ref) } /** - * batadv_softif_vlan_put - decrease the vlan object refcounter and + * batadv_softif_vlan_put() - decrease the vlan object refcounter and * possibly release it * @vlan: the vlan object to release */ @@ -532,7 +540,7 @@ void batadv_softif_vlan_put(struct batadv_softif_vlan *vlan) } /** - * batadv_softif_vlan_get - get the vlan object for a specific vid + * batadv_softif_vlan_get() - get the vlan object for a specific vid * @bat_priv: the bat priv with all the soft interface information * @vid: the identifier of the vlan object to retrieve * @@ -561,7 +569,7 @@ struct batadv_softif_vlan *batadv_softif_vlan_get(struct batadv_priv *bat_priv, } /** - * batadv_softif_create_vlan - allocate the needed resources for a new vlan + * batadv_softif_create_vlan() - allocate the needed resources for a new vlan * @bat_priv: the bat priv with all the soft interface information * @vid: the VLAN identifier * @@ -613,7 +621,7 @@ int batadv_softif_create_vlan(struct batadv_priv *bat_priv, unsigned short vid) } /** - * batadv_softif_destroy_vlan - remove and destroy a softif_vlan object + * batadv_softif_destroy_vlan() - remove and destroy a softif_vlan object * @bat_priv: the bat priv with all the soft interface information * @vlan: the object to remove */ @@ -631,7 +639,7 @@ static void batadv_softif_destroy_vlan(struct batadv_priv *bat_priv, } /** - * batadv_interface_add_vid - ndo_add_vid API implementation + * batadv_interface_add_vid() - ndo_add_vid API implementation * @dev: the netdev of the mesh interface * @proto: protocol of the the vlan id * @vid: identifier of the new vlan @@ -689,7 +697,7 @@ static int batadv_interface_add_vid(struct net_device *dev, __be16 proto, } /** - * batadv_interface_kill_vid - ndo_kill_vid API implementation + * batadv_interface_kill_vid() - ndo_kill_vid API implementation * @dev: the netdev of the mesh interface * @proto: protocol of the the vlan id * @vid: identifier of the deleted vlan @@ -732,7 +740,7 @@ static struct lock_class_key batadv_netdev_xmit_lock_key; static struct lock_class_key batadv_netdev_addr_lock_key; /** - * batadv_set_lockdep_class_one - Set lockdep class for a single tx queue + * batadv_set_lockdep_class_one() - Set lockdep class for a single tx queue * @dev: device which owns the tx queue * @txq: tx queue to modify * @_unused: always NULL @@ -745,7 +753,7 @@ static void batadv_set_lockdep_class_one(struct net_device *dev, } /** - * batadv_set_lockdep_class - Set txq and addr_list lockdep class + * batadv_set_lockdep_class() - Set txq and addr_list lockdep class * @dev: network device to modify */ static void batadv_set_lockdep_class(struct net_device *dev) @@ -755,7 +763,7 @@ static void batadv_set_lockdep_class(struct net_device *dev) } /** - * batadv_softif_init_late - late stage initialization of soft interface + * batadv_softif_init_late() - late stage initialization of soft interface * @dev: registered network device to modify * * Return: error code on failures @@ -860,7 +868,7 @@ free_bat_counters: } /** - * batadv_softif_slave_add - Add a slave interface to a batadv_soft_interface + * batadv_softif_slave_add() - Add a slave interface to a batadv_soft_interface * @dev: batadv_soft_interface used as master interface * @slave_dev: net_device which should become the slave interface * @extack: extended ACK report struct @@ -888,7 +896,7 @@ out: } /** - * batadv_softif_slave_del - Delete a slave iface from a batadv_soft_interface + * batadv_softif_slave_del() - Delete a slave iface from a batadv_soft_interface * @dev: batadv_soft_interface used as master interface * @slave_dev: net_device which should be removed from the master interface * @@ -1023,7 +1031,7 @@ static const struct ethtool_ops batadv_ethtool_ops = { }; /** - * batadv_softif_free - Deconstructor of batadv_soft_interface + * batadv_softif_free() - Deconstructor of batadv_soft_interface * @dev: Device to cleanup and remove */ static void batadv_softif_free(struct net_device *dev) @@ -1039,7 +1047,7 @@ static void batadv_softif_free(struct net_device *dev) } /** - * batadv_softif_init_early - early stage initialization of soft interface + * batadv_softif_init_early() - early stage initialization of soft interface * @dev: registered network device to modify */ static void batadv_softif_init_early(struct net_device *dev) @@ -1063,6 +1071,13 @@ static void batadv_softif_init_early(struct net_device *dev) dev->ethtool_ops = &batadv_ethtool_ops; } +/** + * batadv_softif_create() - Create and register soft interface + * @net: the applicable net namespace + * @name: name of the new soft interface + * + * Return: newly allocated soft_interface, NULL on errors + */ struct net_device *batadv_softif_create(struct net *net, const char *name) { struct net_device *soft_iface; @@ -1089,7 +1104,7 @@ struct net_device *batadv_softif_create(struct net *net, const char *name) } /** - * batadv_softif_destroy_sysfs - deletion of batadv_soft_interface via sysfs + * batadv_softif_destroy_sysfs() - deletion of batadv_soft_interface via sysfs * @soft_iface: the to-be-removed batman-adv interface */ void batadv_softif_destroy_sysfs(struct net_device *soft_iface) @@ -1111,7 +1126,8 @@ void batadv_softif_destroy_sysfs(struct net_device *soft_iface) } /** - * batadv_softif_destroy_netlink - deletion of batadv_soft_interface via netlink + * batadv_softif_destroy_netlink() - deletion of batadv_soft_interface via + * netlink * @soft_iface: the to-be-removed batman-adv interface * @head: list pointer */ @@ -1139,6 +1155,12 @@ static void batadv_softif_destroy_netlink(struct net_device *soft_iface, unregister_netdevice_queue(soft_iface, head); } +/** + * batadv_softif_is_valid() - Check whether device is a batadv soft interface + * @net_dev: device which should be checked + * + * Return: true when net_dev is a batman-adv interface, false otherwise + */ bool batadv_softif_is_valid(const struct net_device *net_dev) { if (net_dev->netdev_ops->ndo_start_xmit == batadv_interface_tx) diff --git a/net/batman-adv/soft-interface.h b/net/batman-adv/soft-interface.h index 639c3abb214a..075c5b5b2ce1 100644 --- a/net/batman-adv/soft-interface.h +++ b/net/batman-adv/soft-interface.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2007-2017 B.A.T.M.A.N. contributors: * * Marek Lindner diff --git a/net/batman-adv/sysfs.c b/net/batman-adv/sysfs.c index aa187fd42475..56fb42551453 100644 --- a/net/batman-adv/sysfs.c +++ b/net/batman-adv/sysfs.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2010-2017 B.A.T.M.A.N. contributors: * * Marek Lindner @@ -22,10 +23,11 @@ #include <linux/compiler.h> #include <linux/device.h> #include <linux/errno.h> -#include <linux/fs.h> +#include <linux/gfp.h> #include <linux/if.h> #include <linux/if_vlan.h> #include <linux/kernel.h> +#include <linux/kobject.h> #include <linux/kref.h> #include <linux/netdevice.h> #include <linux/printk.h> @@ -63,7 +65,7 @@ static struct batadv_priv *batadv_kobj_to_batpriv(struct kobject *obj) } /** - * batadv_vlan_kobj_to_batpriv - convert a vlan kobj in the associated batpriv + * batadv_vlan_kobj_to_batpriv() - convert a vlan kobj in the associated batpriv * @obj: kobject to covert * * Return: the associated batadv_priv struct. @@ -83,7 +85,7 @@ static struct batadv_priv *batadv_vlan_kobj_to_batpriv(struct kobject *obj) } /** - * batadv_kobj_to_vlan - convert a kobj in the associated softif_vlan struct + * batadv_kobj_to_vlan() - convert a kobj in the associated softif_vlan struct * @bat_priv: the bat priv with all the soft interface information * @obj: kobject to covert * @@ -598,7 +600,7 @@ static ssize_t batadv_store_gw_bwidth(struct kobject *kobj, } /** - * batadv_show_isolation_mark - print the current isolation mark/mask + * batadv_show_isolation_mark() - print the current isolation mark/mask * @kobj: kobject representing the private mesh sysfs directory * @attr: the batman-adv attribute the user is interacting with * @buff: the buffer that will contain the data to send back to the user @@ -616,8 +618,8 @@ static ssize_t batadv_show_isolation_mark(struct kobject *kobj, } /** - * batadv_store_isolation_mark - parse and store the isolation mark/mask entered - * by the user + * batadv_store_isolation_mark() - parse and store the isolation mark/mask + * entered by the user * @kobj: kobject representing the private mesh sysfs directory * @attr: the batman-adv attribute the user is interacting with * @buff: the buffer containing the user data @@ -733,6 +735,12 @@ static struct batadv_attribute *batadv_vlan_attrs[] = { NULL, }; +/** + * batadv_sysfs_add_meshif() - Add soft interface specific sysfs entries + * @dev: netdev struct of the soft interface + * + * Return: 0 on success or negative error number in case of failure + */ int batadv_sysfs_add_meshif(struct net_device *dev) { struct kobject *batif_kobject = &dev->dev.kobj; @@ -773,6 +781,10 @@ out: return -ENOMEM; } +/** + * batadv_sysfs_del_meshif() - Remove soft interface specific sysfs entries + * @dev: netdev struct of the soft interface + */ void batadv_sysfs_del_meshif(struct net_device *dev) { struct batadv_priv *bat_priv = netdev_priv(dev); @@ -788,7 +800,7 @@ void batadv_sysfs_del_meshif(struct net_device *dev) } /** - * batadv_sysfs_add_vlan - add all the needed sysfs objects for the new vlan + * batadv_sysfs_add_vlan() - add all the needed sysfs objects for the new vlan * @dev: netdev of the mesh interface * @vlan: private data of the newly added VLAN interface * @@ -849,7 +861,7 @@ out: } /** - * batadv_sysfs_del_vlan - remove all the sysfs objects for a given VLAN + * batadv_sysfs_del_vlan() - remove all the sysfs objects for a given VLAN * @bat_priv: the bat priv with all the soft interface information * @vlan: the private data of the VLAN to destroy */ @@ -894,7 +906,7 @@ static ssize_t batadv_show_mesh_iface(struct kobject *kobj, } /** - * batadv_store_mesh_iface_finish - store new hardif mesh_iface state + * batadv_store_mesh_iface_finish() - store new hardif mesh_iface state * @net_dev: netdevice to add/remove to/from batman-adv soft-interface * @ifname: name of soft-interface to modify * @@ -947,7 +959,7 @@ out: } /** - * batadv_store_mesh_iface_work - store new hardif mesh_iface state + * batadv_store_mesh_iface_work() - store new hardif mesh_iface state * @work: work queue item * * Changes the parts of the hard+soft interface which can not be modified under @@ -1043,7 +1055,7 @@ static ssize_t batadv_show_iface_status(struct kobject *kobj, #ifdef CONFIG_BATMAN_ADV_BATMAN_V /** - * batadv_store_throughput_override - parse and store throughput override + * batadv_store_throughput_override() - parse and store throughput override * entered by the user * @kobj: kobject representing the private mesh sysfs directory * @attr: the batman-adv attribute the user is interacting with @@ -1130,6 +1142,13 @@ static struct batadv_attribute *batadv_batman_attrs[] = { NULL, }; +/** + * batadv_sysfs_add_hardif() - Add hard interface specific sysfs entries + * @hardif_obj: address where to store the pointer to new sysfs folder + * @dev: netdev struct of the hard interface + * + * Return: 0 on success or negative error number in case of failure + */ int batadv_sysfs_add_hardif(struct kobject **hardif_obj, struct net_device *dev) { struct kobject *hardif_kobject = &dev->dev.kobj; @@ -1164,6 +1183,11 @@ out: return -ENOMEM; } +/** + * batadv_sysfs_del_hardif() - Remove hard interface specific sysfs entries + * @hardif_obj: address to the pointer to which stores batman-adv sysfs folder + * of the hard interface + */ void batadv_sysfs_del_hardif(struct kobject **hardif_obj) { kobject_uevent(*hardif_obj, KOBJ_REMOVE); @@ -1172,6 +1196,16 @@ void batadv_sysfs_del_hardif(struct kobject **hardif_obj) *hardif_obj = NULL; } +/** + * batadv_throw_uevent() - Send an uevent with batman-adv specific env data + * @bat_priv: the bat priv with all the soft interface information + * @type: subsystem type of event. Stored in uevent's BATTYPE + * @action: action type of event. Stored in uevent's BATACTION + * @data: string with additional information to the event (ignored for + * BATADV_UEV_DEL). Stored in uevent's BATDATA + * + * Return: 0 on success or negative error number in case of failure + */ int batadv_throw_uevent(struct batadv_priv *bat_priv, enum batadv_uev_type type, enum batadv_uev_action action, const char *data) { diff --git a/net/batman-adv/sysfs.h b/net/batman-adv/sysfs.h index e487412e256b..bbeee61221fa 100644 --- a/net/batman-adv/sysfs.h +++ b/net/batman-adv/sysfs.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2010-2017 B.A.T.M.A.N. contributors: * * Marek Lindner @@ -35,10 +36,23 @@ struct net_device; */ #define BATADV_SYSFS_VLAN_SUBDIR_PREFIX "vlan" +/** + * struct batadv_attribute - sysfs export helper for batman-adv attributes + */ struct batadv_attribute { + /** @attr: sysfs attribute file */ struct attribute attr; + + /** + * @show: function to export the current attribute's content to sysfs + */ ssize_t (*show)(struct kobject *kobj, struct attribute *attr, char *buf); + + /** + * @store: function to load new value from character buffer and save it + * in batman-adv attribute + */ ssize_t (*store)(struct kobject *kobj, struct attribute *attr, char *buf, size_t count); }; diff --git a/net/batman-adv/tp_meter.c b/net/batman-adv/tp_meter.c index ebc4e2241c77..7dcf2aa4deb5 100644 --- a/net/batman-adv/tp_meter.c +++ b/net/batman-adv/tp_meter.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2012-2017 B.A.T.M.A.N. contributors: * * Edo Monticelli, Antonio Quartulli @@ -19,13 +20,13 @@ #include "main.h" #include <linux/atomic.h> -#include <linux/bug.h> +#include <linux/build_bug.h> #include <linux/byteorder/generic.h> #include <linux/cache.h> #include <linux/compiler.h> #include <linux/err.h> #include <linux/etherdevice.h> -#include <linux/fs.h> +#include <linux/gfp.h> #include <linux/if_ether.h> #include <linux/init.h> #include <linux/jiffies.h> @@ -97,7 +98,7 @@ static u8 batadv_tp_prerandom[4096] __read_mostly; /** - * batadv_tp_session_cookie - generate session cookie based on session ids + * batadv_tp_session_cookie() - generate session cookie based on session ids * @session: TP session identifier * @icmp_uid: icmp pseudo uid of the tp session * @@ -115,7 +116,7 @@ static u32 batadv_tp_session_cookie(const u8 session[2], u8 icmp_uid) } /** - * batadv_tp_cwnd - compute the new cwnd size + * batadv_tp_cwnd() - compute the new cwnd size * @base: base cwnd size value * @increment: the value to add to base to get the new size * @min: minumim cwnd value (usually MSS) @@ -140,7 +141,7 @@ static u32 batadv_tp_cwnd(u32 base, u32 increment, u32 min) } /** - * batadv_tp_updated_cwnd - update the Congestion Windows + * batadv_tp_updated_cwnd() - update the Congestion Windows * @tp_vars: the private data of the current TP meter session * @mss: maximum segment size of transmission * @@ -176,7 +177,7 @@ static void batadv_tp_update_cwnd(struct batadv_tp_vars *tp_vars, u32 mss) } /** - * batadv_tp_update_rto - calculate new retransmission timeout + * batadv_tp_update_rto() - calculate new retransmission timeout * @tp_vars: the private data of the current TP meter session * @new_rtt: new roundtrip time in msec */ @@ -212,7 +213,7 @@ static void batadv_tp_update_rto(struct batadv_tp_vars *tp_vars, } /** - * batadv_tp_batctl_notify - send client status result to client + * batadv_tp_batctl_notify() - send client status result to client * @reason: reason for tp meter session stop * @dst: destination of tp_meter session * @bat_priv: the bat priv with all the soft interface information @@ -244,7 +245,7 @@ static void batadv_tp_batctl_notify(enum batadv_tp_meter_reason reason, } /** - * batadv_tp_batctl_error_notify - send client error result to client + * batadv_tp_batctl_error_notify() - send client error result to client * @reason: reason for tp meter session stop * @dst: destination of tp_meter session * @bat_priv: the bat priv with all the soft interface information @@ -259,7 +260,7 @@ static void batadv_tp_batctl_error_notify(enum batadv_tp_meter_reason reason, } /** - * batadv_tp_list_find - find a tp_vars object in the global list + * batadv_tp_list_find() - find a tp_vars object in the global list * @bat_priv: the bat priv with all the soft interface information * @dst: the other endpoint MAC address to look for * @@ -294,7 +295,8 @@ static struct batadv_tp_vars *batadv_tp_list_find(struct batadv_priv *bat_priv, } /** - * batadv_tp_list_find_session - find tp_vars session object in the global list + * batadv_tp_list_find_session() - find tp_vars session object in the global + * list * @bat_priv: the bat priv with all the soft interface information * @dst: the other endpoint MAC address to look for * @session: session identifier @@ -335,7 +337,7 @@ batadv_tp_list_find_session(struct batadv_priv *bat_priv, const u8 *dst, } /** - * batadv_tp_vars_release - release batadv_tp_vars from lists and queue for + * batadv_tp_vars_release() - release batadv_tp_vars from lists and queue for * free after rcu grace period * @ref: kref pointer of the batadv_tp_vars */ @@ -360,7 +362,7 @@ static void batadv_tp_vars_release(struct kref *ref) } /** - * batadv_tp_vars_put - decrement the batadv_tp_vars refcounter and possibly + * batadv_tp_vars_put() - decrement the batadv_tp_vars refcounter and possibly * release it * @tp_vars: the private data of the current TP meter session to be free'd */ @@ -370,7 +372,7 @@ static void batadv_tp_vars_put(struct batadv_tp_vars *tp_vars) } /** - * batadv_tp_sender_cleanup - cleanup sender data and drop and timer + * batadv_tp_sender_cleanup() - cleanup sender data and drop and timer * @bat_priv: the bat priv with all the soft interface information * @tp_vars: the private data of the current TP meter session to cleanup */ @@ -400,7 +402,7 @@ static void batadv_tp_sender_cleanup(struct batadv_priv *bat_priv, } /** - * batadv_tp_sender_end - print info about ended session and inform client + * batadv_tp_sender_end() - print info about ended session and inform client * @bat_priv: the bat priv with all the soft interface information * @tp_vars: the private data of the current TP meter session */ @@ -433,7 +435,7 @@ static void batadv_tp_sender_end(struct batadv_priv *bat_priv, } /** - * batadv_tp_sender_shutdown - let sender thread/timer stop gracefully + * batadv_tp_sender_shutdown() - let sender thread/timer stop gracefully * @tp_vars: the private data of the current TP meter session * @reason: reason for tp meter session stop */ @@ -447,7 +449,7 @@ static void batadv_tp_sender_shutdown(struct batadv_tp_vars *tp_vars, } /** - * batadv_tp_sender_finish - stop sender session after test_length was reached + * batadv_tp_sender_finish() - stop sender session after test_length was reached * @work: delayed work reference of the related tp_vars */ static void batadv_tp_sender_finish(struct work_struct *work) @@ -463,7 +465,7 @@ static void batadv_tp_sender_finish(struct work_struct *work) } /** - * batadv_tp_reset_sender_timer - reschedule the sender timer + * batadv_tp_reset_sender_timer() - reschedule the sender timer * @tp_vars: the private TP meter data for this session * * Reschedule the timer using tp_vars->rto as delay @@ -481,7 +483,7 @@ static void batadv_tp_reset_sender_timer(struct batadv_tp_vars *tp_vars) } /** - * batadv_tp_sender_timeout - timer that fires in case of packet loss + * batadv_tp_sender_timeout() - timer that fires in case of packet loss * @t: address to timer_list inside tp_vars * * If fired it means that there was packet loss. @@ -531,7 +533,7 @@ static void batadv_tp_sender_timeout(struct timer_list *t) } /** - * batadv_tp_fill_prerandom - Fill buffer with prefetched random bytes + * batadv_tp_fill_prerandom() - Fill buffer with prefetched random bytes * @tp_vars: the private TP meter data for this session * @buf: Buffer to fill with bytes * @nbytes: amount of pseudorandom bytes @@ -563,7 +565,7 @@ static void batadv_tp_fill_prerandom(struct batadv_tp_vars *tp_vars, } /** - * batadv_tp_send_msg - send a single message + * batadv_tp_send_msg() - send a single message * @tp_vars: the private TP meter data for this session * @src: source mac address * @orig_node: the originator of the destination @@ -623,7 +625,7 @@ static int batadv_tp_send_msg(struct batadv_tp_vars *tp_vars, const u8 *src, } /** - * batadv_tp_recv_ack - ACK receiving function + * batadv_tp_recv_ack() - ACK receiving function * @bat_priv: the bat priv with all the soft interface information * @skb: the buffer containing the received packet * @@ -765,7 +767,7 @@ out: } /** - * batadv_tp_avail - check if congestion window is not full + * batadv_tp_avail() - check if congestion window is not full * @tp_vars: the private data of the current TP meter session * @payload_len: size of the payload of a single message * @@ -783,7 +785,7 @@ static bool batadv_tp_avail(struct batadv_tp_vars *tp_vars, } /** - * batadv_tp_wait_available - wait until congestion window becomes free or + * batadv_tp_wait_available() - wait until congestion window becomes free or * timeout is reached * @tp_vars: the private data of the current TP meter session * @plen: size of the payload of a single message @@ -805,7 +807,7 @@ static int batadv_tp_wait_available(struct batadv_tp_vars *tp_vars, size_t plen) } /** - * batadv_tp_send - main sending thread of a tp meter session + * batadv_tp_send() - main sending thread of a tp meter session * @arg: address of the related tp_vars * * Return: nothing, this function never returns @@ -904,7 +906,8 @@ out: } /** - * batadv_tp_start_kthread - start new thread which manages the tp meter sender + * batadv_tp_start_kthread() - start new thread which manages the tp meter + * sender * @tp_vars: the private data of the current TP meter session */ static void batadv_tp_start_kthread(struct batadv_tp_vars *tp_vars) @@ -935,7 +938,7 @@ static void batadv_tp_start_kthread(struct batadv_tp_vars *tp_vars) } /** - * batadv_tp_start - start a new tp meter session + * batadv_tp_start() - start a new tp meter session * @bat_priv: the bat priv with all the soft interface information * @dst: the receiver MAC address * @test_length: test length in milliseconds @@ -1060,7 +1063,7 @@ void batadv_tp_start(struct batadv_priv *bat_priv, const u8 *dst, } /** - * batadv_tp_stop - stop currently running tp meter session + * batadv_tp_stop() - stop currently running tp meter session * @bat_priv: the bat priv with all the soft interface information * @dst: the receiver MAC address * @return_value: reason for tp meter session stop @@ -1092,7 +1095,7 @@ out: } /** - * batadv_tp_reset_receiver_timer - reset the receiver shutdown timer + * batadv_tp_reset_receiver_timer() - reset the receiver shutdown timer * @tp_vars: the private data of the current TP meter session * * start the receiver shutdown timer or reset it if already started @@ -1104,7 +1107,7 @@ static void batadv_tp_reset_receiver_timer(struct batadv_tp_vars *tp_vars) } /** - * batadv_tp_receiver_shutdown - stop a tp meter receiver when timeout is + * batadv_tp_receiver_shutdown() - stop a tp meter receiver when timeout is * reached without received ack * @t: address to timer_list inside tp_vars */ @@ -1149,7 +1152,7 @@ static void batadv_tp_receiver_shutdown(struct timer_list *t) } /** - * batadv_tp_send_ack - send an ACK packet + * batadv_tp_send_ack() - send an ACK packet * @bat_priv: the bat priv with all the soft interface information * @dst: the mac address of the destination originator * @seq: the sequence number to ACK @@ -1221,7 +1224,7 @@ out: } /** - * batadv_tp_handle_out_of_order - store an out of order packet + * batadv_tp_handle_out_of_order() - store an out of order packet * @tp_vars: the private data of the current TP meter session * @skb: the buffer containing the received packet * @@ -1297,7 +1300,7 @@ out: } /** - * batadv_tp_ack_unordered - update number received bytes in current stream + * batadv_tp_ack_unordered() - update number received bytes in current stream * without gaps * @tp_vars: the private data of the current TP meter session */ @@ -1330,7 +1333,7 @@ static void batadv_tp_ack_unordered(struct batadv_tp_vars *tp_vars) } /** - * batadv_tp_init_recv - return matching or create new receiver tp_vars + * batadv_tp_init_recv() - return matching or create new receiver tp_vars * @bat_priv: the bat priv with all the soft interface information * @icmp: received icmp tp msg * @@ -1383,7 +1386,7 @@ out_unlock: } /** - * batadv_tp_recv_msg - process a single data message + * batadv_tp_recv_msg() - process a single data message * @bat_priv: the bat priv with all the soft interface information * @skb: the buffer containing the received packet * @@ -1468,7 +1471,7 @@ out: } /** - * batadv_tp_meter_recv - main TP Meter receiving function + * batadv_tp_meter_recv() - main TP Meter receiving function * @bat_priv: the bat priv with all the soft interface information * @skb: the buffer containing the received packet */ @@ -1494,7 +1497,7 @@ void batadv_tp_meter_recv(struct batadv_priv *bat_priv, struct sk_buff *skb) } /** - * batadv_tp_meter_init - initialize global tp_meter structures + * batadv_tp_meter_init() - initialize global tp_meter structures */ void __init batadv_tp_meter_init(void) { diff --git a/net/batman-adv/tp_meter.h b/net/batman-adv/tp_meter.h index a8ada5c123bd..c8b8f2cb2c2b 100644 --- a/net/batman-adv/tp_meter.h +++ b/net/batman-adv/tp_meter.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2012-2017 B.A.T.M.A.N. contributors: * * Edo Monticelli, Antonio Quartulli diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c index 8a3ce79b1307..0e53be3f8df0 100644 --- a/net/batman-adv/translation-table.c +++ b/net/batman-adv/translation-table.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2007-2017 B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich, Antonio Quartulli @@ -20,14 +21,14 @@ #include <linux/atomic.h> #include <linux/bitops.h> -#include <linux/bug.h> +#include <linux/build_bug.h> #include <linux/byteorder/generic.h> #include <linux/cache.h> #include <linux/compiler.h> #include <linux/crc32c.h> #include <linux/errno.h> #include <linux/etherdevice.h> -#include <linux/fs.h> +#include <linux/gfp.h> #include <linux/if_ether.h> #include <linux/init.h> #include <linux/jhash.h> @@ -36,6 +37,7 @@ #include <linux/kref.h> #include <linux/list.h> #include <linux/lockdep.h> +#include <linux/net.h> #include <linux/netdevice.h> #include <linux/netlink.h> #include <linux/rculist.h> @@ -86,7 +88,7 @@ static void batadv_tt_global_del(struct batadv_priv *bat_priv, bool roaming); /** - * batadv_compare_tt - check if two TT entries are the same + * batadv_compare_tt() - check if two TT entries are the same * @node: the list element pointer of the first TT entry * @data2: pointer to the tt_common_entry of the second TT entry * @@ -105,7 +107,7 @@ static bool batadv_compare_tt(const struct hlist_node *node, const void *data2) } /** - * batadv_choose_tt - return the index of the tt entry in the hash table + * batadv_choose_tt() - return the index of the tt entry in the hash table * @data: pointer to the tt_common_entry object to map * @size: the size of the hash table * @@ -125,7 +127,7 @@ static inline u32 batadv_choose_tt(const void *data, u32 size) } /** - * batadv_tt_hash_find - look for a client in the given hash table + * batadv_tt_hash_find() - look for a client in the given hash table * @hash: the hash table to search * @addr: the mac address of the client to look for * @vid: VLAN identifier @@ -170,7 +172,7 @@ batadv_tt_hash_find(struct batadv_hashtable *hash, const u8 *addr, } /** - * batadv_tt_local_hash_find - search the local table for a given client + * batadv_tt_local_hash_find() - search the local table for a given client * @bat_priv: the bat priv with all the soft interface information * @addr: the mac address of the client to look for * @vid: VLAN identifier @@ -195,7 +197,7 @@ batadv_tt_local_hash_find(struct batadv_priv *bat_priv, const u8 *addr, } /** - * batadv_tt_global_hash_find - search the global table for a given client + * batadv_tt_global_hash_find() - search the global table for a given client * @bat_priv: the bat priv with all the soft interface information * @addr: the mac address of the client to look for * @vid: VLAN identifier @@ -220,7 +222,7 @@ batadv_tt_global_hash_find(struct batadv_priv *bat_priv, const u8 *addr, } /** - * batadv_tt_local_entry_free_rcu - free the tt_local_entry + * batadv_tt_local_entry_free_rcu() - free the tt_local_entry * @rcu: rcu pointer of the tt_local_entry */ static void batadv_tt_local_entry_free_rcu(struct rcu_head *rcu) @@ -234,7 +236,7 @@ static void batadv_tt_local_entry_free_rcu(struct rcu_head *rcu) } /** - * batadv_tt_local_entry_release - release tt_local_entry from lists and queue + * batadv_tt_local_entry_release() - release tt_local_entry from lists and queue * for free after rcu grace period * @ref: kref pointer of the nc_node */ @@ -251,7 +253,7 @@ static void batadv_tt_local_entry_release(struct kref *ref) } /** - * batadv_tt_local_entry_put - decrement the tt_local_entry refcounter and + * batadv_tt_local_entry_put() - decrement the tt_local_entry refcounter and * possibly release it * @tt_local_entry: tt_local_entry to be free'd */ @@ -263,7 +265,7 @@ batadv_tt_local_entry_put(struct batadv_tt_local_entry *tt_local_entry) } /** - * batadv_tt_global_entry_free_rcu - free the tt_global_entry + * batadv_tt_global_entry_free_rcu() - free the tt_global_entry * @rcu: rcu pointer of the tt_global_entry */ static void batadv_tt_global_entry_free_rcu(struct rcu_head *rcu) @@ -277,8 +279,8 @@ static void batadv_tt_global_entry_free_rcu(struct rcu_head *rcu) } /** - * batadv_tt_global_entry_release - release tt_global_entry from lists and queue - * for free after rcu grace period + * batadv_tt_global_entry_release() - release tt_global_entry from lists and + * queue for free after rcu grace period * @ref: kref pointer of the nc_node */ static void batadv_tt_global_entry_release(struct kref *ref) @@ -294,7 +296,7 @@ static void batadv_tt_global_entry_release(struct kref *ref) } /** - * batadv_tt_global_entry_put - decrement the tt_global_entry refcounter and + * batadv_tt_global_entry_put() - decrement the tt_global_entry refcounter and * possibly release it * @tt_global_entry: tt_global_entry to be free'd */ @@ -306,7 +308,7 @@ batadv_tt_global_entry_put(struct batadv_tt_global_entry *tt_global_entry) } /** - * batadv_tt_global_hash_count - count the number of orig entries + * batadv_tt_global_hash_count() - count the number of orig entries * @bat_priv: the bat priv with all the soft interface information * @addr: the mac address of the client to count entries for * @vid: VLAN identifier @@ -331,8 +333,8 @@ int batadv_tt_global_hash_count(struct batadv_priv *bat_priv, } /** - * batadv_tt_local_size_mod - change the size by v of the local table identified - * by vid + * batadv_tt_local_size_mod() - change the size by v of the local table + * identified by vid * @bat_priv: the bat priv with all the soft interface information * @vid: the VLAN identifier of the sub-table to change * @v: the amount to sum to the local table size @@ -352,8 +354,8 @@ static void batadv_tt_local_size_mod(struct batadv_priv *bat_priv, } /** - * batadv_tt_local_size_inc - increase by one the local table size for the given - * vid + * batadv_tt_local_size_inc() - increase by one the local table size for the + * given vid * @bat_priv: the bat priv with all the soft interface information * @vid: the VLAN identifier */ @@ -364,8 +366,8 @@ static void batadv_tt_local_size_inc(struct batadv_priv *bat_priv, } /** - * batadv_tt_local_size_dec - decrease by one the local table size for the given - * vid + * batadv_tt_local_size_dec() - decrease by one the local table size for the + * given vid * @bat_priv: the bat priv with all the soft interface information * @vid: the VLAN identifier */ @@ -376,7 +378,7 @@ static void batadv_tt_local_size_dec(struct batadv_priv *bat_priv, } /** - * batadv_tt_global_size_mod - change the size by v of the global table + * batadv_tt_global_size_mod() - change the size by v of the global table * for orig_node identified by vid * @orig_node: the originator for which the table has to be modified * @vid: the VLAN identifier @@ -404,7 +406,7 @@ static void batadv_tt_global_size_mod(struct batadv_orig_node *orig_node, } /** - * batadv_tt_global_size_inc - increase by one the global table size for the + * batadv_tt_global_size_inc() - increase by one the global table size for the * given vid * @orig_node: the originator which global table size has to be decreased * @vid: the vlan identifier @@ -416,7 +418,7 @@ static void batadv_tt_global_size_inc(struct batadv_orig_node *orig_node, } /** - * batadv_tt_global_size_dec - decrease by one the global table size for the + * batadv_tt_global_size_dec() - decrease by one the global table size for the * given vid * @orig_node: the originator which global table size has to be decreased * @vid: the vlan identifier @@ -428,7 +430,7 @@ static void batadv_tt_global_size_dec(struct batadv_orig_node *orig_node, } /** - * batadv_tt_orig_list_entry_free_rcu - free the orig_entry + * batadv_tt_orig_list_entry_free_rcu() - free the orig_entry * @rcu: rcu pointer of the orig_entry */ static void batadv_tt_orig_list_entry_free_rcu(struct rcu_head *rcu) @@ -441,7 +443,7 @@ static void batadv_tt_orig_list_entry_free_rcu(struct rcu_head *rcu) } /** - * batadv_tt_orig_list_entry_release - release tt orig entry from lists and + * batadv_tt_orig_list_entry_release() - release tt orig entry from lists and * queue for free after rcu grace period * @ref: kref pointer of the tt orig entry */ @@ -457,7 +459,7 @@ static void batadv_tt_orig_list_entry_release(struct kref *ref) } /** - * batadv_tt_orig_list_entry_put - decrement the tt orig entry refcounter and + * batadv_tt_orig_list_entry_put() - decrement the tt orig entry refcounter and * possibly release it * @orig_entry: tt orig entry to be free'd */ @@ -468,7 +470,7 @@ batadv_tt_orig_list_entry_put(struct batadv_tt_orig_list_entry *orig_entry) } /** - * batadv_tt_local_event - store a local TT event (ADD/DEL) + * batadv_tt_local_event() - store a local TT event (ADD/DEL) * @bat_priv: the bat priv with all the soft interface information * @tt_local_entry: the TT entry involved in the event * @event_flags: flags to store in the event structure @@ -543,7 +545,7 @@ unlock: } /** - * batadv_tt_len - compute length in bytes of given number of tt changes + * batadv_tt_len() - compute length in bytes of given number of tt changes * @changes_num: number of tt changes * * Return: computed length in bytes. @@ -554,7 +556,7 @@ static int batadv_tt_len(int changes_num) } /** - * batadv_tt_entries - compute the number of entries fitting in tt_len bytes + * batadv_tt_entries() - compute the number of entries fitting in tt_len bytes * @tt_len: available space * * Return: the number of entries. @@ -565,8 +567,8 @@ static u16 batadv_tt_entries(u16 tt_len) } /** - * batadv_tt_local_table_transmit_size - calculates the local translation table - * size when transmitted over the air + * batadv_tt_local_table_transmit_size() - calculates the local translation + * table size when transmitted over the air * @bat_priv: the bat priv with all the soft interface information * * Return: local translation table size in bytes. @@ -625,7 +627,7 @@ static void batadv_tt_global_free(struct batadv_priv *bat_priv, } /** - * batadv_tt_local_add - add a new client to the local table or update an + * batadv_tt_local_add() - add a new client to the local table or update an * existing client * @soft_iface: netdev struct of the mesh interface * @addr: the mac address of the client to add @@ -830,7 +832,7 @@ out: } /** - * batadv_tt_prepare_tvlv_global_data - prepare the TVLV TT header to send + * batadv_tt_prepare_tvlv_global_data() - prepare the TVLV TT header to send * within a TT Response directed to another node * @orig_node: originator for which the TT data has to be prepared * @tt_data: uninitialised pointer to the address of the TVLV buffer @@ -903,8 +905,8 @@ out: } /** - * batadv_tt_prepare_tvlv_local_data - allocate and prepare the TT TVLV for this - * node + * batadv_tt_prepare_tvlv_local_data() - allocate and prepare the TT TVLV for + * this node * @bat_priv: the bat priv with all the soft interface information * @tt_data: uninitialised pointer to the address of the TVLV buffer * @tt_change: uninitialised pointer to the address of the area where the TT @@ -977,8 +979,8 @@ out: } /** - * batadv_tt_tvlv_container_update - update the translation table tvlv container - * after local tt changes have been committed + * batadv_tt_tvlv_container_update() - update the translation table tvlv + * container after local tt changes have been committed * @bat_priv: the bat priv with all the soft interface information */ static void batadv_tt_tvlv_container_update(struct batadv_priv *bat_priv) @@ -1053,6 +1055,14 @@ container_register: } #ifdef CONFIG_BATMAN_ADV_DEBUGFS + +/** + * batadv_tt_local_seq_print_text() - Print the local tt table in a seq file + * @seq: seq file to print on + * @offset: not used + * + * Return: always 0 + */ int batadv_tt_local_seq_print_text(struct seq_file *seq, void *offset) { struct net_device *net_dev = (struct net_device *)seq->private; @@ -1123,7 +1133,7 @@ out: #endif /** - * batadv_tt_local_dump_entry - Dump one TT local entry into a message + * batadv_tt_local_dump_entry() - Dump one TT local entry into a message * @msg :Netlink message to dump into * @portid: Port making netlink request * @seq: Sequence number of netlink message @@ -1179,7 +1189,7 @@ batadv_tt_local_dump_entry(struct sk_buff *msg, u32 portid, u32 seq, } /** - * batadv_tt_local_dump_bucket - Dump one TT local bucket into a message + * batadv_tt_local_dump_bucket() - Dump one TT local bucket into a message * @msg: Netlink message to dump into * @portid: Port making netlink request * @seq: Sequence number of netlink message @@ -1216,7 +1226,7 @@ batadv_tt_local_dump_bucket(struct sk_buff *msg, u32 portid, u32 seq, } /** - * batadv_tt_local_dump - Dump TT local entries into a message + * batadv_tt_local_dump() - Dump TT local entries into a message * @msg: Netlink message to dump into * @cb: Parameters from query * @@ -1300,7 +1310,7 @@ batadv_tt_local_set_pending(struct batadv_priv *bat_priv, } /** - * batadv_tt_local_remove - logically remove an entry from the local table + * batadv_tt_local_remove() - logically remove an entry from the local table * @bat_priv: the bat priv with all the soft interface information * @addr: the MAC address of the client to remove * @vid: VLAN identifier @@ -1362,7 +1372,7 @@ out: } /** - * batadv_tt_local_purge_list - purge inactive tt local entries + * batadv_tt_local_purge_list() - purge inactive tt local entries * @bat_priv: the bat priv with all the soft interface information * @head: pointer to the list containing the local tt entries * @timeout: parameter deciding whether a given tt local entry is considered @@ -1397,7 +1407,7 @@ static void batadv_tt_local_purge_list(struct batadv_priv *bat_priv, } /** - * batadv_tt_local_purge - purge inactive tt local entries + * batadv_tt_local_purge() - purge inactive tt local entries * @bat_priv: the bat priv with all the soft interface information * @timeout: parameter deciding whether a given tt local entry is considered * inactive or not @@ -1490,7 +1500,7 @@ static void batadv_tt_changes_list_free(struct batadv_priv *bat_priv) } /** - * batadv_tt_global_orig_entry_find - find a TT orig_list_entry + * batadv_tt_global_orig_entry_find() - find a TT orig_list_entry * @entry: the TT global entry where the orig_list_entry has to be * extracted from * @orig_node: the originator for which the orig_list_entry has to be found @@ -1524,8 +1534,8 @@ batadv_tt_global_orig_entry_find(const struct batadv_tt_global_entry *entry, } /** - * batadv_tt_global_entry_has_orig - check if a TT global entry is also handled - * by a given originator + * batadv_tt_global_entry_has_orig() - check if a TT global entry is also + * handled by a given originator * @entry: the TT global entry to check * @orig_node: the originator to search in the list * @@ -1550,7 +1560,7 @@ batadv_tt_global_entry_has_orig(const struct batadv_tt_global_entry *entry, } /** - * batadv_tt_global_sync_flags - update TT sync flags + * batadv_tt_global_sync_flags() - update TT sync flags * @tt_global: the TT global entry to update sync flags in * * Updates the sync flag bits in the tt_global flag attribute with a logical @@ -1574,7 +1584,7 @@ batadv_tt_global_sync_flags(struct batadv_tt_global_entry *tt_global) } /** - * batadv_tt_global_orig_entry_add - add or update a TT orig entry + * batadv_tt_global_orig_entry_add() - add or update a TT orig entry * @tt_global: the TT global entry to add an orig entry in * @orig_node: the originator to add an orig entry for * @ttvn: translation table version number of this changeset @@ -1624,7 +1634,7 @@ out: } /** - * batadv_tt_global_add - add a new TT global entry or update an existing one + * batadv_tt_global_add() - add a new TT global entry or update an existing one * @bat_priv: the bat priv with all the soft interface information * @orig_node: the originator announcing the client * @tt_addr: the mac address of the non-mesh client @@ -1796,7 +1806,7 @@ out: } /** - * batadv_transtable_best_orig - Get best originator list entry from tt entry + * batadv_transtable_best_orig() - Get best originator list entry from tt entry * @bat_priv: the bat priv with all the soft interface information * @tt_global_entry: global translation table entry to be analyzed * @@ -1842,8 +1852,8 @@ batadv_transtable_best_orig(struct batadv_priv *bat_priv, #ifdef CONFIG_BATMAN_ADV_DEBUGFS /** - * batadv_tt_global_print_entry - print all orig nodes who announce the address - * for this global entry + * batadv_tt_global_print_entry() - print all orig nodes who announce the + * address for this global entry * @bat_priv: the bat priv with all the soft interface information * @tt_global_entry: global translation table entry to be printed * @seq: debugfs table seq_file struct @@ -1925,6 +1935,13 @@ print_list: } } +/** + * batadv_tt_global_seq_print_text() - Print the global tt table in a seq file + * @seq: seq file to print on + * @offset: not used + * + * Return: always 0 + */ int batadv_tt_global_seq_print_text(struct seq_file *seq, void *offset) { struct net_device *net_dev = (struct net_device *)seq->private; @@ -1967,7 +1984,7 @@ out: #endif /** - * batadv_tt_global_dump_subentry - Dump all TT local entries into a message + * batadv_tt_global_dump_subentry() - Dump all TT local entries into a message * @msg: Netlink message to dump into * @portid: Port making netlink request * @seq: Sequence number of netlink message @@ -2028,7 +2045,7 @@ batadv_tt_global_dump_subentry(struct sk_buff *msg, u32 portid, u32 seq, } /** - * batadv_tt_global_dump_entry - Dump one TT global entry into a message + * batadv_tt_global_dump_entry() - Dump one TT global entry into a message * @msg: Netlink message to dump into * @portid: Port making netlink request * @seq: Sequence number of netlink message @@ -2073,7 +2090,7 @@ batadv_tt_global_dump_entry(struct sk_buff *msg, u32 portid, u32 seq, } /** - * batadv_tt_global_dump_bucket - Dump one TT local bucket into a message + * batadv_tt_global_dump_bucket() - Dump one TT local bucket into a message * @msg: Netlink message to dump into * @portid: Port making netlink request * @seq: Sequence number of netlink message @@ -2112,7 +2129,7 @@ batadv_tt_global_dump_bucket(struct sk_buff *msg, u32 portid, u32 seq, } /** - * batadv_tt_global_dump - Dump TT global entries into a message + * batadv_tt_global_dump() - Dump TT global entries into a message * @msg: Netlink message to dump into * @cb: Parameters from query * @@ -2180,7 +2197,7 @@ int batadv_tt_global_dump(struct sk_buff *msg, struct netlink_callback *cb) } /** - * _batadv_tt_global_del_orig_entry - remove and free an orig_entry + * _batadv_tt_global_del_orig_entry() - remove and free an orig_entry * @tt_global_entry: the global entry to remove the orig_entry from * @orig_entry: the orig entry to remove and free * @@ -2222,7 +2239,7 @@ batadv_tt_global_del_orig_list(struct batadv_tt_global_entry *tt_global_entry) } /** - * batadv_tt_global_del_orig_node - remove orig_node from a global tt entry + * batadv_tt_global_del_orig_node() - remove orig_node from a global tt entry * @bat_priv: the bat priv with all the soft interface information * @tt_global_entry: the global entry to remove the orig_node from * @orig_node: the originator announcing the client @@ -2301,7 +2318,7 @@ batadv_tt_global_del_roaming(struct batadv_priv *bat_priv, } /** - * batadv_tt_global_del - remove a client from the global table + * batadv_tt_global_del() - remove a client from the global table * @bat_priv: the bat priv with all the soft interface information * @orig_node: an originator serving this client * @addr: the mac address of the client @@ -2367,8 +2384,8 @@ out: } /** - * batadv_tt_global_del_orig - remove all the TT global entries belonging to the - * given originator matching the provided vid + * batadv_tt_global_del_orig() - remove all the TT global entries belonging to + * the given originator matching the provided vid * @bat_priv: the bat priv with all the soft interface information * @orig_node: the originator owning the entries to remove * @match_vid: the VLAN identifier to match. If negative all the entries will be @@ -2539,7 +2556,7 @@ _batadv_is_ap_isolated(struct batadv_tt_local_entry *tt_local_entry, } /** - * batadv_transtable_search - get the mesh destination for a given client + * batadv_transtable_search() - get the mesh destination for a given client * @bat_priv: the bat priv with all the soft interface information * @src: mac address of the source client * @addr: mac address of the destination client @@ -2599,7 +2616,7 @@ out: } /** - * batadv_tt_global_crc - calculates the checksum of the local table belonging + * batadv_tt_global_crc() - calculates the checksum of the local table belonging * to the given orig_node * @bat_priv: the bat priv with all the soft interface information * @orig_node: originator for which the CRC should be computed @@ -2694,7 +2711,7 @@ static u32 batadv_tt_global_crc(struct batadv_priv *bat_priv, } /** - * batadv_tt_local_crc - calculates the checksum of the local table + * batadv_tt_local_crc() - calculates the checksum of the local table * @bat_priv: the bat priv with all the soft interface information * @vid: VLAN identifier for which the CRC32 has to be computed * @@ -2751,7 +2768,7 @@ static u32 batadv_tt_local_crc(struct batadv_priv *bat_priv, } /** - * batadv_tt_req_node_release - free tt_req node entry + * batadv_tt_req_node_release() - free tt_req node entry * @ref: kref pointer of the tt req_node entry */ static void batadv_tt_req_node_release(struct kref *ref) @@ -2764,7 +2781,7 @@ static void batadv_tt_req_node_release(struct kref *ref) } /** - * batadv_tt_req_node_put - decrement the tt_req_node refcounter and + * batadv_tt_req_node_put() - decrement the tt_req_node refcounter and * possibly release it * @tt_req_node: tt_req_node to be free'd */ @@ -2826,7 +2843,7 @@ static void batadv_tt_req_purge(struct batadv_priv *bat_priv) } /** - * batadv_tt_req_node_new - search and possibly create a tt_req_node object + * batadv_tt_req_node_new() - search and possibly create a tt_req_node object * @bat_priv: the bat priv with all the soft interface information * @orig_node: orig node this request is being issued for * @@ -2863,7 +2880,7 @@ unlock: } /** - * batadv_tt_local_valid - verify that given tt entry is a valid one + * batadv_tt_local_valid() - verify that given tt entry is a valid one * @entry_ptr: to be checked local tt entry * @data_ptr: not used but definition required to satisfy the callback prototype * @@ -2897,7 +2914,7 @@ static bool batadv_tt_global_valid(const void *entry_ptr, } /** - * batadv_tt_tvlv_generate - fill the tvlv buff with the tt entries from the + * batadv_tt_tvlv_generate() - fill the tvlv buff with the tt entries from the * specified tt hash * @bat_priv: the bat priv with all the soft interface information * @hash: hash table containing the tt entries @@ -2948,7 +2965,7 @@ static void batadv_tt_tvlv_generate(struct batadv_priv *bat_priv, } /** - * batadv_tt_global_check_crc - check if all the CRCs are correct + * batadv_tt_global_check_crc() - check if all the CRCs are correct * @orig_node: originator for which the CRCs have to be checked * @tt_vlan: pointer to the first tvlv VLAN entry * @num_vlan: number of tvlv VLAN entries @@ -3005,7 +3022,7 @@ static bool batadv_tt_global_check_crc(struct batadv_orig_node *orig_node, } /** - * batadv_tt_local_update_crc - update all the local CRCs + * batadv_tt_local_update_crc() - update all the local CRCs * @bat_priv: the bat priv with all the soft interface information */ static void batadv_tt_local_update_crc(struct batadv_priv *bat_priv) @@ -3021,7 +3038,7 @@ static void batadv_tt_local_update_crc(struct batadv_priv *bat_priv) } /** - * batadv_tt_global_update_crc - update all the global CRCs for this orig_node + * batadv_tt_global_update_crc() - update all the global CRCs for this orig_node * @bat_priv: the bat priv with all the soft interface information * @orig_node: the orig_node for which the CRCs have to be updated */ @@ -3048,7 +3065,7 @@ static void batadv_tt_global_update_crc(struct batadv_priv *bat_priv, } /** - * batadv_send_tt_request - send a TT Request message to a given node + * batadv_send_tt_request() - send a TT Request message to a given node * @bat_priv: the bat priv with all the soft interface information * @dst_orig_node: the destination of the message * @ttvn: the version number that the source of the message is looking for @@ -3137,7 +3154,7 @@ out: } /** - * batadv_send_other_tt_response - send reply to tt request concerning another + * batadv_send_other_tt_response() - send reply to tt request concerning another * node's translation table * @bat_priv: the bat priv with all the soft interface information * @tt_data: tt data containing the tt request information @@ -3270,8 +3287,8 @@ out: } /** - * batadv_send_my_tt_response - send reply to tt request concerning this node's - * translation table + * batadv_send_my_tt_response() - send reply to tt request concerning this + * node's translation table * @bat_priv: the bat priv with all the soft interface information * @tt_data: tt data containing the tt request information * @req_src: mac address of tt request sender @@ -3388,7 +3405,7 @@ out: } /** - * batadv_send_tt_response - send reply to tt request + * batadv_send_tt_response() - send reply to tt request * @bat_priv: the bat priv with all the soft interface information * @tt_data: tt data containing the tt request information * @req_src: mac address of tt request sender @@ -3484,7 +3501,7 @@ static void batadv_tt_update_changes(struct batadv_priv *bat_priv, } /** - * batadv_is_my_client - check if a client is served by the local node + * batadv_is_my_client() - check if a client is served by the local node * @bat_priv: the bat priv with all the soft interface information * @addr: the mac address of the client to check * @vid: VLAN identifier @@ -3514,7 +3531,7 @@ out: } /** - * batadv_handle_tt_response - process incoming tt reply + * batadv_handle_tt_response() - process incoming tt reply * @bat_priv: the bat priv with all the soft interface information * @tt_data: tt data containing the tt request information * @resp_src: mac address of tt reply sender @@ -3607,7 +3624,7 @@ static void batadv_tt_roam_purge(struct batadv_priv *bat_priv) } /** - * batadv_tt_check_roam_count - check if a client has roamed too frequently + * batadv_tt_check_roam_count() - check if a client has roamed too frequently * @bat_priv: the bat priv with all the soft interface information * @client: mac address of the roaming client * @@ -3662,7 +3679,7 @@ unlock: } /** - * batadv_send_roam_adv - send a roaming advertisement message + * batadv_send_roam_adv() - send a roaming advertisement message * @bat_priv: the bat priv with all the soft interface information * @client: mac address of the roaming client * @vid: VLAN identifier @@ -3727,6 +3744,10 @@ static void batadv_tt_purge(struct work_struct *work) msecs_to_jiffies(BATADV_TT_WORK_PERIOD)); } +/** + * batadv_tt_free() - Free translation table of soft interface + * @bat_priv: the bat priv with all the soft interface information + */ void batadv_tt_free(struct batadv_priv *bat_priv) { batadv_tvlv_container_unregister(bat_priv, BATADV_TVLV_TT, 1); @@ -3744,7 +3765,7 @@ void batadv_tt_free(struct batadv_priv *bat_priv) } /** - * batadv_tt_local_set_flags - set or unset the specified flags on the local + * batadv_tt_local_set_flags() - set or unset the specified flags on the local * table and possibly count them in the TT size * @bat_priv: the bat priv with all the soft interface information * @flags: the flag to switch @@ -3830,7 +3851,7 @@ static void batadv_tt_local_purge_pending_clients(struct batadv_priv *bat_priv) } /** - * batadv_tt_local_commit_changes_nolock - commit all pending local tt changes + * batadv_tt_local_commit_changes_nolock() - commit all pending local tt changes * which have been queued in the time since the last commit * @bat_priv: the bat priv with all the soft interface information * @@ -3863,7 +3884,7 @@ static void batadv_tt_local_commit_changes_nolock(struct batadv_priv *bat_priv) } /** - * batadv_tt_local_commit_changes - commit all pending local tt changes which + * batadv_tt_local_commit_changes() - commit all pending local tt changes which * have been queued in the time since the last commit * @bat_priv: the bat priv with all the soft interface information */ @@ -3874,6 +3895,15 @@ void batadv_tt_local_commit_changes(struct batadv_priv *bat_priv) spin_unlock_bh(&bat_priv->tt.commit_lock); } +/** + * batadv_is_ap_isolated() - Check if packet from upper layer should be dropped + * @bat_priv: the bat priv with all the soft interface information + * @src: source mac address of packet + * @dst: destination mac address of packet + * @vid: vlan id of packet + * + * Return: true when src+dst(+vid) pair should be isolated, false otherwise + */ bool batadv_is_ap_isolated(struct batadv_priv *bat_priv, u8 *src, u8 *dst, unsigned short vid) { @@ -3909,7 +3939,7 @@ vlan_put: } /** - * batadv_tt_update_orig - update global translation table with new tt + * batadv_tt_update_orig() - update global translation table with new tt * information received via ogms * @bat_priv: the bat priv with all the soft interface information * @orig_node: the orig_node of the ogm @@ -3994,7 +4024,7 @@ request_table: } /** - * batadv_tt_global_client_is_roaming - check if a client is marked as roaming + * batadv_tt_global_client_is_roaming() - check if a client is marked as roaming * @bat_priv: the bat priv with all the soft interface information * @addr: the mac address of the client to check * @vid: VLAN identifier @@ -4020,7 +4050,7 @@ out: } /** - * batadv_tt_local_client_is_roaming - tells whether the client is roaming + * batadv_tt_local_client_is_roaming() - tells whether the client is roaming * @bat_priv: the bat priv with all the soft interface information * @addr: the mac address of the local client to query * @vid: VLAN identifier @@ -4045,6 +4075,15 @@ out: return ret; } +/** + * batadv_tt_add_temporary_global_entry() - Add temporary entry to global TT + * @bat_priv: the bat priv with all the soft interface information + * @orig_node: orig node which the temporary entry should be associated with + * @addr: mac address of the client + * @vid: VLAN id of the new temporary global translation table + * + * Return: true when temporary tt entry could be added, false otherwise + */ bool batadv_tt_add_temporary_global_entry(struct batadv_priv *bat_priv, struct batadv_orig_node *orig_node, const unsigned char *addr, @@ -4069,7 +4108,7 @@ bool batadv_tt_add_temporary_global_entry(struct batadv_priv *bat_priv, } /** - * batadv_tt_local_resize_to_mtu - resize the local translation table fit the + * batadv_tt_local_resize_to_mtu() - resize the local translation table fit the * maximum packet size that can be transported through the mesh * @soft_iface: netdev struct of the mesh interface * @@ -4110,7 +4149,7 @@ void batadv_tt_local_resize_to_mtu(struct net_device *soft_iface) } /** - * batadv_tt_tvlv_ogm_handler_v1 - process incoming tt tvlv container + * batadv_tt_tvlv_ogm_handler_v1() - process incoming tt tvlv container * @bat_priv: the bat priv with all the soft interface information * @orig: the orig_node of the ogm * @flags: flags indicating the tvlv state (see batadv_tvlv_handler_flags) @@ -4149,7 +4188,7 @@ static void batadv_tt_tvlv_ogm_handler_v1(struct batadv_priv *bat_priv, } /** - * batadv_tt_tvlv_unicast_handler_v1 - process incoming (unicast) tt tvlv + * batadv_tt_tvlv_unicast_handler_v1() - process incoming (unicast) tt tvlv * container * @bat_priv: the bat priv with all the soft interface information * @src: mac address of tt tvlv sender @@ -4231,7 +4270,8 @@ static int batadv_tt_tvlv_unicast_handler_v1(struct batadv_priv *bat_priv, } /** - * batadv_roam_tvlv_unicast_handler_v1 - process incoming tt roam tvlv container + * batadv_roam_tvlv_unicast_handler_v1() - process incoming tt roam tvlv + * container * @bat_priv: the bat priv with all the soft interface information * @src: mac address of tt tvlv sender * @dst: mac address of tt tvlv recipient @@ -4281,7 +4321,7 @@ out: } /** - * batadv_tt_init - initialise the translation table internals + * batadv_tt_init() - initialise the translation table internals * @bat_priv: the bat priv with all the soft interface information * * Return: 0 on success or negative error number in case of failure. @@ -4317,7 +4357,7 @@ int batadv_tt_init(struct batadv_priv *bat_priv) } /** - * batadv_tt_global_is_isolated - check if a client is marked as isolated + * batadv_tt_global_is_isolated() - check if a client is marked as isolated * @bat_priv: the bat priv with all the soft interface information * @addr: the mac address of the client * @vid: the identifier of the VLAN where this client is connected @@ -4343,7 +4383,7 @@ bool batadv_tt_global_is_isolated(struct batadv_priv *bat_priv, } /** - * batadv_tt_cache_init - Initialize tt memory object cache + * batadv_tt_cache_init() - Initialize tt memory object cache * * Return: 0 on success or negative error number in case of failure. */ @@ -4412,7 +4452,7 @@ err_tt_tl_destroy: } /** - * batadv_tt_cache_destroy - Destroy tt memory object cache + * batadv_tt_cache_destroy() - Destroy tt memory object cache */ void batadv_tt_cache_destroy(void) { diff --git a/net/batman-adv/translation-table.h b/net/batman-adv/translation-table.h index 411d586191da..8d9e3abec2c8 100644 --- a/net/batman-adv/translation-table.h +++ b/net/batman-adv/translation-table.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2007-2017 B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich, Antonio Quartulli diff --git a/net/batman-adv/tvlv.c b/net/batman-adv/tvlv.c index 1d9e267caec9..e189f026974c 100644 --- a/net/batman-adv/tvlv.c +++ b/net/batman-adv/tvlv.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2007-2017 B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich @@ -19,7 +20,7 @@ #include <linux/byteorder/generic.h> #include <linux/etherdevice.h> -#include <linux/fs.h> +#include <linux/gfp.h> #include <linux/if_ether.h> #include <linux/kernel.h> #include <linux/kref.h> @@ -42,7 +43,7 @@ #include "tvlv.h" /** - * batadv_tvlv_handler_release - release tvlv handler from lists and queue for + * batadv_tvlv_handler_release() - release tvlv handler from lists and queue for * free after rcu grace period * @ref: kref pointer of the tvlv */ @@ -55,7 +56,7 @@ static void batadv_tvlv_handler_release(struct kref *ref) } /** - * batadv_tvlv_handler_put - decrement the tvlv container refcounter and + * batadv_tvlv_handler_put() - decrement the tvlv container refcounter and * possibly release it * @tvlv_handler: the tvlv handler to free */ @@ -65,7 +66,7 @@ static void batadv_tvlv_handler_put(struct batadv_tvlv_handler *tvlv_handler) } /** - * batadv_tvlv_handler_get - retrieve tvlv handler from the tvlv handler list + * batadv_tvlv_handler_get() - retrieve tvlv handler from the tvlv handler list * based on the provided type and version (both need to match) * @bat_priv: the bat priv with all the soft interface information * @type: tvlv handler type to look for @@ -99,7 +100,7 @@ batadv_tvlv_handler_get(struct batadv_priv *bat_priv, u8 type, u8 version) } /** - * batadv_tvlv_container_release - release tvlv from lists and free + * batadv_tvlv_container_release() - release tvlv from lists and free * @ref: kref pointer of the tvlv */ static void batadv_tvlv_container_release(struct kref *ref) @@ -111,7 +112,7 @@ static void batadv_tvlv_container_release(struct kref *ref) } /** - * batadv_tvlv_container_put - decrement the tvlv container refcounter and + * batadv_tvlv_container_put() - decrement the tvlv container refcounter and * possibly release it * @tvlv: the tvlv container to free */ @@ -121,7 +122,7 @@ static void batadv_tvlv_container_put(struct batadv_tvlv_container *tvlv) } /** - * batadv_tvlv_container_get - retrieve tvlv container from the tvlv container + * batadv_tvlv_container_get() - retrieve tvlv container from the tvlv container * list based on the provided type and version (both need to match) * @bat_priv: the bat priv with all the soft interface information * @type: tvlv container type to look for @@ -155,7 +156,7 @@ batadv_tvlv_container_get(struct batadv_priv *bat_priv, u8 type, u8 version) } /** - * batadv_tvlv_container_list_size - calculate the size of the tvlv container + * batadv_tvlv_container_list_size() - calculate the size of the tvlv container * list entries * @bat_priv: the bat priv with all the soft interface information * @@ -180,8 +181,8 @@ static u16 batadv_tvlv_container_list_size(struct batadv_priv *bat_priv) } /** - * batadv_tvlv_container_remove - remove tvlv container from the tvlv container - * list + * batadv_tvlv_container_remove() - remove tvlv container from the tvlv + * container list * @bat_priv: the bat priv with all the soft interface information * @tvlv: the to be removed tvlv container * @@ -204,7 +205,7 @@ static void batadv_tvlv_container_remove(struct batadv_priv *bat_priv, } /** - * batadv_tvlv_container_unregister - unregister tvlv container based on the + * batadv_tvlv_container_unregister() - unregister tvlv container based on the * provided type and version (both need to match) * @bat_priv: the bat priv with all the soft interface information * @type: tvlv container type to unregister @@ -222,7 +223,7 @@ void batadv_tvlv_container_unregister(struct batadv_priv *bat_priv, } /** - * batadv_tvlv_container_register - register tvlv type, version and content + * batadv_tvlv_container_register() - register tvlv type, version and content * to be propagated with each (primary interface) OGM * @bat_priv: the bat priv with all the soft interface information * @type: tvlv container type @@ -267,7 +268,7 @@ void batadv_tvlv_container_register(struct batadv_priv *bat_priv, } /** - * batadv_tvlv_realloc_packet_buff - reallocate packet buffer to accommodate + * batadv_tvlv_realloc_packet_buff() - reallocate packet buffer to accommodate * requested packet size * @packet_buff: packet buffer * @packet_buff_len: packet buffer size @@ -300,7 +301,7 @@ static bool batadv_tvlv_realloc_packet_buff(unsigned char **packet_buff, } /** - * batadv_tvlv_container_ogm_append - append tvlv container content to given + * batadv_tvlv_container_ogm_append() - append tvlv container content to given * OGM packet buffer * @bat_priv: the bat priv with all the soft interface information * @packet_buff: ogm packet buffer @@ -353,7 +354,7 @@ end: } /** - * batadv_tvlv_call_handler - parse the given tvlv buffer to call the + * batadv_tvlv_call_handler() - parse the given tvlv buffer to call the * appropriate handlers * @bat_priv: the bat priv with all the soft interface information * @tvlv_handler: tvlv callback function handling the tvlv content @@ -407,7 +408,7 @@ static int batadv_tvlv_call_handler(struct batadv_priv *bat_priv, } /** - * batadv_tvlv_containers_process - parse the given tvlv buffer to call the + * batadv_tvlv_containers_process() - parse the given tvlv buffer to call the * appropriate handlers * @bat_priv: the bat priv with all the soft interface information * @ogm_source: flag indicating whether the tvlv is an ogm or a unicast packet @@ -474,7 +475,7 @@ int batadv_tvlv_containers_process(struct batadv_priv *bat_priv, } /** - * batadv_tvlv_ogm_receive - process an incoming ogm and call the appropriate + * batadv_tvlv_ogm_receive() - process an incoming ogm and call the appropriate * handlers * @bat_priv: the bat priv with all the soft interface information * @batadv_ogm_packet: ogm packet containing the tvlv containers @@ -501,7 +502,7 @@ void batadv_tvlv_ogm_receive(struct batadv_priv *bat_priv, } /** - * batadv_tvlv_handler_register - register tvlv handler based on the provided + * batadv_tvlv_handler_register() - register tvlv handler based on the provided * type and version (both need to match) for ogm tvlv payload and/or unicast * payload * @bat_priv: the bat priv with all the soft interface information @@ -556,7 +557,7 @@ void batadv_tvlv_handler_register(struct batadv_priv *bat_priv, } /** - * batadv_tvlv_handler_unregister - unregister tvlv handler based on the + * batadv_tvlv_handler_unregister() - unregister tvlv handler based on the * provided type and version (both need to match) * @bat_priv: the bat priv with all the soft interface information * @type: tvlv handler type to be unregistered @@ -579,7 +580,7 @@ void batadv_tvlv_handler_unregister(struct batadv_priv *bat_priv, } /** - * batadv_tvlv_unicast_send - send a unicast packet with tvlv payload to the + * batadv_tvlv_unicast_send() - send a unicast packet with tvlv payload to the * specified host * @bat_priv: the bat priv with all the soft interface information * @src: source mac address of the unicast packet diff --git a/net/batman-adv/tvlv.h b/net/batman-adv/tvlv.h index 4d01400ada30..a74df33f446d 100644 --- a/net/batman-adv/tvlv.h +++ b/net/batman-adv/tvlv.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2007-2017 B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h index a62795868794..77b145eba193 100644 --- a/net/batman-adv/types.h +++ b/net/batman-adv/types.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2007-2017 B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich @@ -54,13 +55,15 @@ struct seq_file; /** * enum batadv_dhcp_recipient - dhcp destination - * @BATADV_DHCP_NO: packet is not a dhcp message - * @BATADV_DHCP_TO_SERVER: dhcp message is directed to a server - * @BATADV_DHCP_TO_CLIENT: dhcp message is directed to a client */ enum batadv_dhcp_recipient { + /** @BATADV_DHCP_NO: packet is not a dhcp message */ BATADV_DHCP_NO = 0, + + /** @BATADV_DHCP_TO_SERVER: dhcp message is directed to a server */ BATADV_DHCP_TO_SERVER, + + /** @BATADV_DHCP_TO_CLIENT: dhcp message is directed to a client */ BATADV_DHCP_TO_CLIENT, }; @@ -78,196 +81,274 @@ enum batadv_dhcp_recipient { /** * struct batadv_hard_iface_bat_iv - per hard-interface B.A.T.M.A.N. IV data - * @ogm_buff: buffer holding the OGM packet - * @ogm_buff_len: length of the OGM packet buffer - * @ogm_seqno: OGM sequence number - used to identify each OGM */ struct batadv_hard_iface_bat_iv { + /** @ogm_buff: buffer holding the OGM packet */ unsigned char *ogm_buff; + + /** @ogm_buff_len: length of the OGM packet buffer */ int ogm_buff_len; + + /** @ogm_seqno: OGM sequence number - used to identify each OGM */ atomic_t ogm_seqno; }; /** * enum batadv_v_hard_iface_flags - interface flags useful to B.A.T.M.A.N. V - * @BATADV_FULL_DUPLEX: tells if the connection over this link is full-duplex - * @BATADV_WARNING_DEFAULT: tells whether we have warned the user that no - * throughput data is available for this interface and that default values are - * assumed. */ enum batadv_v_hard_iface_flags { + /** + * @BATADV_FULL_DUPLEX: tells if the connection over this link is + * full-duplex + */ BATADV_FULL_DUPLEX = BIT(0), + + /** + * @BATADV_WARNING_DEFAULT: tells whether we have warned the user that + * no throughput data is available for this interface and that default + * values are assumed. + */ BATADV_WARNING_DEFAULT = BIT(1), }; /** * struct batadv_hard_iface_bat_v - per hard-interface B.A.T.M.A.N. V data - * @elp_interval: time interval between two ELP transmissions - * @elp_seqno: current ELP sequence number - * @elp_skb: base skb containing the ELP message to send - * @elp_wq: workqueue used to schedule ELP transmissions - * @throughput_override: throughput override to disable link auto-detection - * @flags: interface specific flags */ struct batadv_hard_iface_bat_v { + /** @elp_interval: time interval between two ELP transmissions */ atomic_t elp_interval; + + /** @elp_seqno: current ELP sequence number */ atomic_t elp_seqno; + + /** @elp_skb: base skb containing the ELP message to send */ struct sk_buff *elp_skb; + + /** @elp_wq: workqueue used to schedule ELP transmissions */ struct delayed_work elp_wq; + + /** + * @throughput_override: throughput override to disable link + * auto-detection + */ atomic_t throughput_override; + + /** @flags: interface specific flags */ u8 flags; }; /** * enum batadv_hard_iface_wifi_flags - Flags describing the wifi configuration * of a batadv_hard_iface - * @BATADV_HARDIF_WIFI_WEXT_DIRECT: it is a wext wifi device - * @BATADV_HARDIF_WIFI_CFG80211_DIRECT: it is a cfg80211 wifi device - * @BATADV_HARDIF_WIFI_WEXT_INDIRECT: link device is a wext wifi device - * @BATADV_HARDIF_WIFI_CFG80211_INDIRECT: link device is a cfg80211 wifi device */ enum batadv_hard_iface_wifi_flags { + /** @BATADV_HARDIF_WIFI_WEXT_DIRECT: it is a wext wifi device */ BATADV_HARDIF_WIFI_WEXT_DIRECT = BIT(0), + + /** @BATADV_HARDIF_WIFI_CFG80211_DIRECT: it is a cfg80211 wifi device */ BATADV_HARDIF_WIFI_CFG80211_DIRECT = BIT(1), + + /** + * @BATADV_HARDIF_WIFI_WEXT_INDIRECT: link device is a wext wifi device + */ BATADV_HARDIF_WIFI_WEXT_INDIRECT = BIT(2), + + /** + * @BATADV_HARDIF_WIFI_CFG80211_INDIRECT: link device is a cfg80211 wifi + * device + */ BATADV_HARDIF_WIFI_CFG80211_INDIRECT = BIT(3), }; /** * struct batadv_hard_iface - network device known to batman-adv - * @list: list node for batadv_hardif_list - * @if_num: identificator of the interface - * @if_status: status of the interface for batman-adv - * @num_bcasts: number of payload re-broadcasts on this interface (ARQ) - * @wifi_flags: flags whether this is (directly or indirectly) a wifi interface - * @net_dev: pointer to the net_device - * @hardif_obj: kobject of the per interface sysfs "mesh" directory - * @refcount: number of contexts the object is used - * @batman_adv_ptype: packet type describing packets that should be processed by - * batman-adv for this interface - * @soft_iface: the batman-adv interface which uses this network interface - * @rcu: struct used for freeing in an RCU-safe manner - * @bat_iv: per hard-interface B.A.T.M.A.N. IV data - * @bat_v: per hard-interface B.A.T.M.A.N. V data - * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs - * @neigh_list: list of unique single hop neighbors via this interface - * @neigh_list_lock: lock protecting neigh_list */ struct batadv_hard_iface { + /** @list: list node for batadv_hardif_list */ struct list_head list; + + /** @if_num: identificator of the interface */ s16 if_num; + + /** @if_status: status of the interface for batman-adv */ char if_status; + + /** + * @num_bcasts: number of payload re-broadcasts on this interface (ARQ) + */ u8 num_bcasts; + + /** + * @wifi_flags: flags whether this is (directly or indirectly) a wifi + * interface + */ u32 wifi_flags; + + /** @net_dev: pointer to the net_device */ struct net_device *net_dev; + + /** @hardif_obj: kobject of the per interface sysfs "mesh" directory */ struct kobject *hardif_obj; + + /** @refcount: number of contexts the object is used */ struct kref refcount; + + /** + * @batman_adv_ptype: packet type describing packets that should be + * processed by batman-adv for this interface + */ struct packet_type batman_adv_ptype; + + /** + * @soft_iface: the batman-adv interface which uses this network + * interface + */ struct net_device *soft_iface; + + /** @rcu: struct used for freeing in an RCU-safe manner */ struct rcu_head rcu; + + /** @bat_iv: per hard-interface B.A.T.M.A.N. IV data */ struct batadv_hard_iface_bat_iv bat_iv; + #ifdef CONFIG_BATMAN_ADV_BATMAN_V + /** @bat_v: per hard-interface B.A.T.M.A.N. V data */ struct batadv_hard_iface_bat_v bat_v; #endif + + /** + * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs + */ struct dentry *debug_dir; + + /** + * @neigh_list: list of unique single hop neighbors via this interface + */ struct hlist_head neigh_list; - /* neigh_list_lock protects: neigh_list */ + + /** @neigh_list_lock: lock protecting neigh_list */ spinlock_t neigh_list_lock; }; /** * struct batadv_orig_ifinfo - originator info per outgoing interface - * @list: list node for orig_node::ifinfo_list - * @if_outgoing: pointer to outgoing hard-interface - * @router: router that should be used to reach this originator - * @last_real_seqno: last and best known sequence number - * @last_ttl: ttl of last received packet - * @last_seqno_forwarded: seqno of the OGM which was forwarded last - * @batman_seqno_reset: time when the batman seqno window was reset - * @refcount: number of contexts the object is used - * @rcu: struct used for freeing in an RCU-safe manner */ struct batadv_orig_ifinfo { + /** @list: list node for &batadv_orig_node.ifinfo_list */ struct hlist_node list; + + /** @if_outgoing: pointer to outgoing hard-interface */ struct batadv_hard_iface *if_outgoing; - struct batadv_neigh_node __rcu *router; /* rcu protected pointer */ + + /** @router: router that should be used to reach this originator */ + struct batadv_neigh_node __rcu *router; + + /** @last_real_seqno: last and best known sequence number */ u32 last_real_seqno; + + /** @last_ttl: ttl of last received packet */ u8 last_ttl; + + /** @last_seqno_forwarded: seqno of the OGM which was forwarded last */ u32 last_seqno_forwarded; + + /** @batman_seqno_reset: time when the batman seqno window was reset */ unsigned long batman_seqno_reset; + + /** @refcount: number of contexts the object is used */ struct kref refcount; + + /** @rcu: struct used for freeing in an RCU-safe manner */ struct rcu_head rcu; }; /** * struct batadv_frag_table_entry - head in the fragment buffer table - * @fragment_list: head of list with fragments - * @lock: lock to protect the list of fragments - * @timestamp: time (jiffie) of last received fragment - * @seqno: sequence number of the fragments in the list - * @size: accumulated size of packets in list - * @total_size: expected size of the assembled packet */ struct batadv_frag_table_entry { + /** @fragment_list: head of list with fragments */ struct hlist_head fragment_list; - spinlock_t lock; /* protects fragment_list */ + + /** @lock: lock to protect the list of fragments */ + spinlock_t lock; + + /** @timestamp: time (jiffie) of last received fragment */ unsigned long timestamp; + + /** @seqno: sequence number of the fragments in the list */ u16 seqno; + + /** @size: accumulated size of packets in list */ u16 size; + + /** @total_size: expected size of the assembled packet */ u16 total_size; }; /** * struct batadv_frag_list_entry - entry in a list of fragments - * @list: list node information - * @skb: fragment - * @no: fragment number in the set */ struct batadv_frag_list_entry { + /** @list: list node information */ struct hlist_node list; + + /** @skb: fragment */ struct sk_buff *skb; + + /** @no: fragment number in the set */ u8 no; }; /** * struct batadv_vlan_tt - VLAN specific TT attributes - * @crc: CRC32 checksum of the entries belonging to this vlan - * @num_entries: number of TT entries for this VLAN */ struct batadv_vlan_tt { + /** @crc: CRC32 checksum of the entries belonging to this vlan */ u32 crc; + + /** @num_entries: number of TT entries for this VLAN */ atomic_t num_entries; }; /** * struct batadv_orig_node_vlan - VLAN specific data per orig_node - * @vid: the VLAN identifier - * @tt: VLAN specific TT attributes - * @list: list node for orig_node::vlan_list - * @refcount: number of context where this object is currently in use - * @rcu: struct used for freeing in a RCU-safe manner */ struct batadv_orig_node_vlan { + /** @vid: the VLAN identifier */ unsigned short vid; + + /** @tt: VLAN specific TT attributes */ struct batadv_vlan_tt tt; + + /** @list: list node for &batadv_orig_node.vlan_list */ struct hlist_node list; + + /** + * @refcount: number of context where this object is currently in use + */ struct kref refcount; + + /** @rcu: struct used for freeing in a RCU-safe manner */ struct rcu_head rcu; }; /** * struct batadv_orig_bat_iv - B.A.T.M.A.N. IV private orig_node members - * @bcast_own: set of bitfields (one per hard-interface) where each one counts - * the number of our OGMs this orig_node rebroadcasted "back" to us (relative - * to last_real_seqno). Every bitfield is BATADV_TQ_LOCAL_WINDOW_SIZE bits long. - * @bcast_own_sum: sum of bcast_own - * @ogm_cnt_lock: lock protecting bcast_own, bcast_own_sum, - * neigh_node->bat_iv.real_bits & neigh_node->bat_iv.real_packet_count */ struct batadv_orig_bat_iv { + /** + * @bcast_own: set of bitfields (one per hard-interface) where each one + * counts the number of our OGMs this orig_node rebroadcasted "back" to + * us (relative to last_real_seqno). Every bitfield is + * BATADV_TQ_LOCAL_WINDOW_SIZE bits long. + */ unsigned long *bcast_own; + + /** @bcast_own_sum: sum of bcast_own */ u8 *bcast_own_sum; - /* ogm_cnt_lock protects: bcast_own, bcast_own_sum, + + /** + * @ogm_cnt_lock: lock protecting bcast_own, bcast_own_sum, * neigh_node->bat_iv.real_bits & neigh_node->bat_iv.real_packet_count */ spinlock_t ogm_cnt_lock; @@ -275,130 +356,205 @@ struct batadv_orig_bat_iv { /** * struct batadv_orig_node - structure for orig_list maintaining nodes of mesh - * @orig: originator ethernet address - * @ifinfo_list: list for routers per outgoing interface - * @last_bonding_candidate: pointer to last ifinfo of last used router - * @dat_addr: address of the orig node in the distributed hash - * @last_seen: time when last packet from this node was received - * @bcast_seqno_reset: time when the broadcast seqno window was reset - * @mcast_handler_lock: synchronizes mcast-capability and -flag changes - * @mcast_flags: multicast flags announced by the orig node - * @mcast_want_all_unsnoopables_node: a list node for the - * mcast.want_all_unsnoopables list - * @mcast_want_all_ipv4_node: a list node for the mcast.want_all_ipv4 list - * @mcast_want_all_ipv6_node: a list node for the mcast.want_all_ipv6 list - * @capabilities: announced capabilities of this originator - * @capa_initialized: bitfield to remember whether a capability was initialized - * @last_ttvn: last seen translation table version number - * @tt_buff: last tt changeset this node received from the orig node - * @tt_buff_len: length of the last tt changeset this node received from the - * orig node - * @tt_buff_lock: lock that protects tt_buff and tt_buff_len - * @tt_lock: prevents from updating the table while reading it. Table update is - * made up by two operations (data structure update and metdata -CRC/TTVN- - * recalculation) and they have to be executed atomically in order to avoid - * another thread to read the table/metadata between those. - * @bcast_bits: bitfield containing the info which payload broadcast originated - * from this orig node this host already has seen (relative to - * last_bcast_seqno) - * @last_bcast_seqno: last broadcast sequence number received by this host - * @neigh_list: list of potential next hop neighbor towards this orig node - * @neigh_list_lock: lock protecting neigh_list and router - * @hash_entry: hlist node for batadv_priv::orig_hash - * @bat_priv: pointer to soft_iface this orig node belongs to - * @bcast_seqno_lock: lock protecting bcast_bits & last_bcast_seqno - * @refcount: number of contexts the object is used - * @rcu: struct used for freeing in an RCU-safe manner - * @in_coding_list: list of nodes this orig can hear - * @out_coding_list: list of nodes that can hear this orig - * @in_coding_list_lock: protects in_coding_list - * @out_coding_list_lock: protects out_coding_list - * @fragments: array with heads for fragment chains - * @vlan_list: a list of orig_node_vlan structs, one per VLAN served by the - * originator represented by this object - * @vlan_list_lock: lock protecting vlan_list - * @bat_iv: B.A.T.M.A.N. IV private structure */ struct batadv_orig_node { + /** @orig: originator ethernet address */ u8 orig[ETH_ALEN]; + + /** @ifinfo_list: list for routers per outgoing interface */ struct hlist_head ifinfo_list; + + /** + * @last_bonding_candidate: pointer to last ifinfo of last used router + */ struct batadv_orig_ifinfo *last_bonding_candidate; + #ifdef CONFIG_BATMAN_ADV_DAT + /** @dat_addr: address of the orig node in the distributed hash */ batadv_dat_addr_t dat_addr; #endif + + /** @last_seen: time when last packet from this node was received */ unsigned long last_seen; + + /** + * @bcast_seqno_reset: time when the broadcast seqno window was reset + */ unsigned long bcast_seqno_reset; + #ifdef CONFIG_BATMAN_ADV_MCAST - /* synchronizes mcast tvlv specific orig changes */ + /** + * @mcast_handler_lock: synchronizes mcast-capability and -flag changes + */ spinlock_t mcast_handler_lock; + + /** @mcast_flags: multicast flags announced by the orig node */ u8 mcast_flags; + + /** + * @mcast_want_all_unsnoopables_node: a list node for the + * mcast.want_all_unsnoopables list + */ struct hlist_node mcast_want_all_unsnoopables_node; + + /** + * @mcast_want_all_ipv4_node: a list node for the mcast.want_all_ipv4 + * list + */ struct hlist_node mcast_want_all_ipv4_node; + /** + * @mcast_want_all_ipv6_node: a list node for the mcast.want_all_ipv6 + * list + */ struct hlist_node mcast_want_all_ipv6_node; #endif + + /** @capabilities: announced capabilities of this originator */ unsigned long capabilities; + + /** + * @capa_initialized: bitfield to remember whether a capability was + * initialized + */ unsigned long capa_initialized; + + /** @last_ttvn: last seen translation table version number */ atomic_t last_ttvn; + + /** @tt_buff: last tt changeset this node received from the orig node */ unsigned char *tt_buff; + + /** + * @tt_buff_len: length of the last tt changeset this node received + * from the orig node + */ s16 tt_buff_len; - spinlock_t tt_buff_lock; /* protects tt_buff & tt_buff_len */ - /* prevents from changing the table while reading it */ + + /** @tt_buff_lock: lock that protects tt_buff and tt_buff_len */ + spinlock_t tt_buff_lock; + + /** + * @tt_lock: prevents from updating the table while reading it. Table + * update is made up by two operations (data structure update and + * metdata -CRC/TTVN-recalculation) and they have to be executed + * atomically in order to avoid another thread to read the + * table/metadata between those. + */ spinlock_t tt_lock; + + /** + * @bcast_bits: bitfield containing the info which payload broadcast + * originated from this orig node this host already has seen (relative + * to last_bcast_seqno) + */ DECLARE_BITMAP(bcast_bits, BATADV_TQ_LOCAL_WINDOW_SIZE); + + /** + * @last_bcast_seqno: last broadcast sequence number received by this + * host + */ u32 last_bcast_seqno; + + /** + * @neigh_list: list of potential next hop neighbor towards this orig + * node + */ struct hlist_head neigh_list; - /* neigh_list_lock protects: neigh_list, ifinfo_list, - * last_bonding_candidate and router + + /** + * @neigh_list_lock: lock protecting neigh_list, ifinfo_list, + * last_bonding_candidate and router */ spinlock_t neigh_list_lock; + + /** @hash_entry: hlist node for &batadv_priv.orig_hash */ struct hlist_node hash_entry; + + /** @bat_priv: pointer to soft_iface this orig node belongs to */ struct batadv_priv *bat_priv; - /* bcast_seqno_lock protects: bcast_bits & last_bcast_seqno */ + + /** @bcast_seqno_lock: lock protecting bcast_bits & last_bcast_seqno */ spinlock_t bcast_seqno_lock; + + /** @refcount: number of contexts the object is used */ struct kref refcount; + + /** @rcu: struct used for freeing in an RCU-safe manner */ struct rcu_head rcu; + #ifdef CONFIG_BATMAN_ADV_NC + /** @in_coding_list: list of nodes this orig can hear */ struct list_head in_coding_list; + + /** @out_coding_list: list of nodes that can hear this orig */ struct list_head out_coding_list; - spinlock_t in_coding_list_lock; /* Protects in_coding_list */ - spinlock_t out_coding_list_lock; /* Protects out_coding_list */ + + /** @in_coding_list_lock: protects in_coding_list */ + spinlock_t in_coding_list_lock; + + /** @out_coding_list_lock: protects out_coding_list */ + spinlock_t out_coding_list_lock; #endif + + /** @fragments: array with heads for fragment chains */ struct batadv_frag_table_entry fragments[BATADV_FRAG_BUFFER_COUNT]; + + /** + * @vlan_list: a list of orig_node_vlan structs, one per VLAN served by + * the originator represented by this object + */ struct hlist_head vlan_list; - spinlock_t vlan_list_lock; /* protects vlan_list */ + + /** @vlan_list_lock: lock protecting vlan_list */ + spinlock_t vlan_list_lock; + + /** @bat_iv: B.A.T.M.A.N. IV private structure */ struct batadv_orig_bat_iv bat_iv; }; /** * enum batadv_orig_capabilities - orig node capabilities - * @BATADV_ORIG_CAPA_HAS_DAT: orig node has distributed arp table enabled - * @BATADV_ORIG_CAPA_HAS_NC: orig node has network coding enabled - * @BATADV_ORIG_CAPA_HAS_TT: orig node has tt capability - * @BATADV_ORIG_CAPA_HAS_MCAST: orig node has some multicast capability - * (= orig node announces a tvlv of type BATADV_TVLV_MCAST) */ enum batadv_orig_capabilities { + /** + * @BATADV_ORIG_CAPA_HAS_DAT: orig node has distributed arp table + * enabled + */ BATADV_ORIG_CAPA_HAS_DAT, + + /** @BATADV_ORIG_CAPA_HAS_NC: orig node has network coding enabled */ BATADV_ORIG_CAPA_HAS_NC, + + /** @BATADV_ORIG_CAPA_HAS_TT: orig node has tt capability */ BATADV_ORIG_CAPA_HAS_TT, + + /** + * @BATADV_ORIG_CAPA_HAS_MCAST: orig node has some multicast capability + * (= orig node announces a tvlv of type BATADV_TVLV_MCAST) + */ BATADV_ORIG_CAPA_HAS_MCAST, }; /** * struct batadv_gw_node - structure for orig nodes announcing gw capabilities - * @list: list node for batadv_priv_gw::list - * @orig_node: pointer to corresponding orig node - * @bandwidth_down: advertised uplink download bandwidth - * @bandwidth_up: advertised uplink upload bandwidth - * @refcount: number of contexts the object is used - * @rcu: struct used for freeing in an RCU-safe manner */ struct batadv_gw_node { + /** @list: list node for &batadv_priv_gw.list */ struct hlist_node list; + + /** @orig_node: pointer to corresponding orig node */ struct batadv_orig_node *orig_node; + + /** @bandwidth_down: advertised uplink download bandwidth */ u32 bandwidth_down; + + /** @bandwidth_up: advertised uplink upload bandwidth */ u32 bandwidth_up; + + /** @refcount: number of contexts the object is used */ struct kref refcount; + + /** @rcu: struct used for freeing in an RCU-safe manner */ struct rcu_head rcu; }; @@ -407,118 +563,161 @@ DECLARE_EWMA(throughput, 10, 8) /** * struct batadv_hardif_neigh_node_bat_v - B.A.T.M.A.N. V private neighbor * information - * @throughput: ewma link throughput towards this neighbor - * @elp_interval: time interval between two ELP transmissions - * @elp_latest_seqno: latest and best known ELP sequence number - * @last_unicast_tx: when the last unicast packet has been sent to this neighbor - * @metric_work: work queue callback item for metric update */ struct batadv_hardif_neigh_node_bat_v { + /** @throughput: ewma link throughput towards this neighbor */ struct ewma_throughput throughput; + + /** @elp_interval: time interval between two ELP transmissions */ u32 elp_interval; + + /** @elp_latest_seqno: latest and best known ELP sequence number */ u32 elp_latest_seqno; + + /** + * @last_unicast_tx: when the last unicast packet has been sent to this + * neighbor + */ unsigned long last_unicast_tx; + + /** @metric_work: work queue callback item for metric update */ struct work_struct metric_work; }; /** * struct batadv_hardif_neigh_node - unique neighbor per hard-interface - * @list: list node for batadv_hard_iface::neigh_list - * @addr: the MAC address of the neighboring interface - * @orig: the address of the originator this neighbor node belongs to - * @if_incoming: pointer to incoming hard-interface - * @last_seen: when last packet via this neighbor was received - * @bat_v: B.A.T.M.A.N. V private data - * @refcount: number of contexts the object is used - * @rcu: struct used for freeing in a RCU-safe manner */ struct batadv_hardif_neigh_node { + /** @list: list node for &batadv_hard_iface.neigh_list */ struct hlist_node list; + + /** @addr: the MAC address of the neighboring interface */ u8 addr[ETH_ALEN]; + + /** + * @orig: the address of the originator this neighbor node belongs to + */ u8 orig[ETH_ALEN]; + + /** @if_incoming: pointer to incoming hard-interface */ struct batadv_hard_iface *if_incoming; + + /** @last_seen: when last packet via this neighbor was received */ unsigned long last_seen; + #ifdef CONFIG_BATMAN_ADV_BATMAN_V + /** @bat_v: B.A.T.M.A.N. V private data */ struct batadv_hardif_neigh_node_bat_v bat_v; #endif + + /** @refcount: number of contexts the object is used */ struct kref refcount; + + /** @rcu: struct used for freeing in a RCU-safe manner */ struct rcu_head rcu; }; /** * struct batadv_neigh_node - structure for single hops neighbors - * @list: list node for batadv_orig_node::neigh_list - * @orig_node: pointer to corresponding orig_node - * @addr: the MAC address of the neighboring interface - * @ifinfo_list: list for routing metrics per outgoing interface - * @ifinfo_lock: lock protecting private ifinfo members and list - * @if_incoming: pointer to incoming hard-interface - * @last_seen: when last packet via this neighbor was received - * @hardif_neigh: hardif_neigh of this neighbor - * @refcount: number of contexts the object is used - * @rcu: struct used for freeing in an RCU-safe manner */ struct batadv_neigh_node { + /** @list: list node for &batadv_orig_node.neigh_list */ struct hlist_node list; + + /** @orig_node: pointer to corresponding orig_node */ struct batadv_orig_node *orig_node; + + /** @addr: the MAC address of the neighboring interface */ u8 addr[ETH_ALEN]; + + /** @ifinfo_list: list for routing metrics per outgoing interface */ struct hlist_head ifinfo_list; - spinlock_t ifinfo_lock; /* protects ifinfo_list and its members */ + + /** @ifinfo_lock: lock protecting ifinfo_list and its members */ + spinlock_t ifinfo_lock; + + /** @if_incoming: pointer to incoming hard-interface */ struct batadv_hard_iface *if_incoming; + + /** @last_seen: when last packet via this neighbor was received */ unsigned long last_seen; + + /** @hardif_neigh: hardif_neigh of this neighbor */ struct batadv_hardif_neigh_node *hardif_neigh; + + /** @refcount: number of contexts the object is used */ struct kref refcount; + + /** @rcu: struct used for freeing in an RCU-safe manner */ struct rcu_head rcu; }; /** * struct batadv_neigh_ifinfo_bat_iv - neighbor information per outgoing * interface for B.A.T.M.A.N. IV - * @tq_recv: ring buffer of received TQ values from this neigh node - * @tq_index: ring buffer index - * @tq_avg: averaged tq of all tq values in the ring buffer (tq_recv) - * @real_bits: bitfield containing the number of OGMs received from this neigh - * node (relative to orig_node->last_real_seqno) - * @real_packet_count: counted result of real_bits */ struct batadv_neigh_ifinfo_bat_iv { + /** @tq_recv: ring buffer of received TQ values from this neigh node */ u8 tq_recv[BATADV_TQ_GLOBAL_WINDOW_SIZE]; + + /** @tq_index: ring buffer index */ u8 tq_index; + + /** + * @tq_avg: averaged tq of all tq values in the ring buffer (tq_recv) + */ u8 tq_avg; + + /** + * @real_bits: bitfield containing the number of OGMs received from this + * neigh node (relative to orig_node->last_real_seqno) + */ DECLARE_BITMAP(real_bits, BATADV_TQ_LOCAL_WINDOW_SIZE); + + /** @real_packet_count: counted result of real_bits */ u8 real_packet_count; }; /** * struct batadv_neigh_ifinfo_bat_v - neighbor information per outgoing * interface for B.A.T.M.A.N. V - * @throughput: last throughput metric received from originator via this neigh - * @last_seqno: last sequence number known for this neighbor */ struct batadv_neigh_ifinfo_bat_v { + /** + * @throughput: last throughput metric received from originator via this + * neigh + */ u32 throughput; + + /** @last_seqno: last sequence number known for this neighbor */ u32 last_seqno; }; /** * struct batadv_neigh_ifinfo - neighbor information per outgoing interface - * @list: list node for batadv_neigh_node::ifinfo_list - * @if_outgoing: pointer to outgoing hard-interface - * @bat_iv: B.A.T.M.A.N. IV private structure - * @bat_v: B.A.T.M.A.N. V private data - * @last_ttl: last received ttl from this neigh node - * @refcount: number of contexts the object is used - * @rcu: struct used for freeing in a RCU-safe manner */ struct batadv_neigh_ifinfo { + /** @list: list node for &batadv_neigh_node.ifinfo_list */ struct hlist_node list; + + /** @if_outgoing: pointer to outgoing hard-interface */ struct batadv_hard_iface *if_outgoing; + + /** @bat_iv: B.A.T.M.A.N. IV private structure */ struct batadv_neigh_ifinfo_bat_iv bat_iv; + #ifdef CONFIG_BATMAN_ADV_BATMAN_V + /** @bat_v: B.A.T.M.A.N. V private data */ struct batadv_neigh_ifinfo_bat_v bat_v; #endif + + /** @last_ttl: last received ttl from this neigh node */ u8 last_ttl; + + /** @refcount: number of contexts the object is used */ struct kref refcount; + + /** @rcu: struct used for freeing in a RCU-safe manner */ struct rcu_head rcu; }; @@ -526,148 +725,278 @@ struct batadv_neigh_ifinfo { /** * struct batadv_bcast_duplist_entry - structure for LAN broadcast suppression - * @orig: mac address of orig node orginating the broadcast - * @crc: crc32 checksum of broadcast payload - * @entrytime: time when the broadcast packet was received */ struct batadv_bcast_duplist_entry { + /** @orig: mac address of orig node orginating the broadcast */ u8 orig[ETH_ALEN]; + + /** @crc: crc32 checksum of broadcast payload */ __be32 crc; + + /** @entrytime: time when the broadcast packet was received */ unsigned long entrytime; }; #endif /** * enum batadv_counters - indices for traffic counters - * @BATADV_CNT_TX: transmitted payload traffic packet counter - * @BATADV_CNT_TX_BYTES: transmitted payload traffic bytes counter - * @BATADV_CNT_TX_DROPPED: dropped transmission payload traffic packet counter - * @BATADV_CNT_RX: received payload traffic packet counter - * @BATADV_CNT_RX_BYTES: received payload traffic bytes counter - * @BATADV_CNT_FORWARD: forwarded payload traffic packet counter - * @BATADV_CNT_FORWARD_BYTES: forwarded payload traffic bytes counter - * @BATADV_CNT_MGMT_TX: transmitted routing protocol traffic packet counter - * @BATADV_CNT_MGMT_TX_BYTES: transmitted routing protocol traffic bytes counter - * @BATADV_CNT_MGMT_RX: received routing protocol traffic packet counter - * @BATADV_CNT_MGMT_RX_BYTES: received routing protocol traffic bytes counter - * @BATADV_CNT_FRAG_TX: transmitted fragment traffic packet counter - * @BATADV_CNT_FRAG_TX_BYTES: transmitted fragment traffic bytes counter - * @BATADV_CNT_FRAG_RX: received fragment traffic packet counter - * @BATADV_CNT_FRAG_RX_BYTES: received fragment traffic bytes counter - * @BATADV_CNT_FRAG_FWD: forwarded fragment traffic packet counter - * @BATADV_CNT_FRAG_FWD_BYTES: forwarded fragment traffic bytes counter - * @BATADV_CNT_TT_REQUEST_TX: transmitted tt req traffic packet counter - * @BATADV_CNT_TT_REQUEST_RX: received tt req traffic packet counter - * @BATADV_CNT_TT_RESPONSE_TX: transmitted tt resp traffic packet counter - * @BATADV_CNT_TT_RESPONSE_RX: received tt resp traffic packet counter - * @BATADV_CNT_TT_ROAM_ADV_TX: transmitted tt roam traffic packet counter - * @BATADV_CNT_TT_ROAM_ADV_RX: received tt roam traffic packet counter - * @BATADV_CNT_DAT_GET_TX: transmitted dht GET traffic packet counter - * @BATADV_CNT_DAT_GET_RX: received dht GET traffic packet counter - * @BATADV_CNT_DAT_PUT_TX: transmitted dht PUT traffic packet counter - * @BATADV_CNT_DAT_PUT_RX: received dht PUT traffic packet counter - * @BATADV_CNT_DAT_CACHED_REPLY_TX: transmitted dat cache reply traffic packet - * counter - * @BATADV_CNT_NC_CODE: transmitted nc-combined traffic packet counter - * @BATADV_CNT_NC_CODE_BYTES: transmitted nc-combined traffic bytes counter - * @BATADV_CNT_NC_RECODE: transmitted nc-recombined traffic packet counter - * @BATADV_CNT_NC_RECODE_BYTES: transmitted nc-recombined traffic bytes counter - * @BATADV_CNT_NC_BUFFER: counter for packets buffered for later nc decoding - * @BATADV_CNT_NC_DECODE: received and nc-decoded traffic packet counter - * @BATADV_CNT_NC_DECODE_BYTES: received and nc-decoded traffic bytes counter - * @BATADV_CNT_NC_DECODE_FAILED: received and decode-failed traffic packet - * counter - * @BATADV_CNT_NC_SNIFFED: counter for nc-decoded packets received in promisc - * mode. - * @BATADV_CNT_NUM: number of traffic counters */ enum batadv_counters { + /** @BATADV_CNT_TX: transmitted payload traffic packet counter */ BATADV_CNT_TX, + + /** @BATADV_CNT_TX_BYTES: transmitted payload traffic bytes counter */ BATADV_CNT_TX_BYTES, + + /** + * @BATADV_CNT_TX_DROPPED: dropped transmission payload traffic packet + * counter + */ BATADV_CNT_TX_DROPPED, + + /** @BATADV_CNT_RX: received payload traffic packet counter */ BATADV_CNT_RX, + + /** @BATADV_CNT_RX_BYTES: received payload traffic bytes counter */ BATADV_CNT_RX_BYTES, + + /** @BATADV_CNT_FORWARD: forwarded payload traffic packet counter */ BATADV_CNT_FORWARD, + + /** + * @BATADV_CNT_FORWARD_BYTES: forwarded payload traffic bytes counter + */ BATADV_CNT_FORWARD_BYTES, + + /** + * @BATADV_CNT_MGMT_TX: transmitted routing protocol traffic packet + * counter + */ BATADV_CNT_MGMT_TX, + + /** + * @BATADV_CNT_MGMT_TX_BYTES: transmitted routing protocol traffic bytes + * counter + */ BATADV_CNT_MGMT_TX_BYTES, + + /** + * @BATADV_CNT_MGMT_RX: received routing protocol traffic packet counter + */ BATADV_CNT_MGMT_RX, + + /** + * @BATADV_CNT_MGMT_RX_BYTES: received routing protocol traffic bytes + * counter + */ BATADV_CNT_MGMT_RX_BYTES, + + /** @BATADV_CNT_FRAG_TX: transmitted fragment traffic packet counter */ BATADV_CNT_FRAG_TX, + + /** + * @BATADV_CNT_FRAG_TX_BYTES: transmitted fragment traffic bytes counter + */ BATADV_CNT_FRAG_TX_BYTES, + + /** @BATADV_CNT_FRAG_RX: received fragment traffic packet counter */ BATADV_CNT_FRAG_RX, + + /** + * @BATADV_CNT_FRAG_RX_BYTES: received fragment traffic bytes counter + */ BATADV_CNT_FRAG_RX_BYTES, + + /** @BATADV_CNT_FRAG_FWD: forwarded fragment traffic packet counter */ BATADV_CNT_FRAG_FWD, + + /** + * @BATADV_CNT_FRAG_FWD_BYTES: forwarded fragment traffic bytes counter + */ BATADV_CNT_FRAG_FWD_BYTES, + + /** + * @BATADV_CNT_TT_REQUEST_TX: transmitted tt req traffic packet counter + */ BATADV_CNT_TT_REQUEST_TX, + + /** @BATADV_CNT_TT_REQUEST_RX: received tt req traffic packet counter */ BATADV_CNT_TT_REQUEST_RX, + + /** + * @BATADV_CNT_TT_RESPONSE_TX: transmitted tt resp traffic packet + * counter + */ BATADV_CNT_TT_RESPONSE_TX, + + /** + * @BATADV_CNT_TT_RESPONSE_RX: received tt resp traffic packet counter + */ BATADV_CNT_TT_RESPONSE_RX, + + /** + * @BATADV_CNT_TT_ROAM_ADV_TX: transmitted tt roam traffic packet + * counter + */ BATADV_CNT_TT_ROAM_ADV_TX, + + /** + * @BATADV_CNT_TT_ROAM_ADV_RX: received tt roam traffic packet counter + */ BATADV_CNT_TT_ROAM_ADV_RX, + #ifdef CONFIG_BATMAN_ADV_DAT + /** + * @BATADV_CNT_DAT_GET_TX: transmitted dht GET traffic packet counter + */ BATADV_CNT_DAT_GET_TX, + + /** @BATADV_CNT_DAT_GET_RX: received dht GET traffic packet counter */ BATADV_CNT_DAT_GET_RX, + + /** + * @BATADV_CNT_DAT_PUT_TX: transmitted dht PUT traffic packet counter + */ BATADV_CNT_DAT_PUT_TX, + + /** @BATADV_CNT_DAT_PUT_RX: received dht PUT traffic packet counter */ BATADV_CNT_DAT_PUT_RX, + + /** + * @BATADV_CNT_DAT_CACHED_REPLY_TX: transmitted dat cache reply traffic + * packet counter + */ BATADV_CNT_DAT_CACHED_REPLY_TX, #endif + #ifdef CONFIG_BATMAN_ADV_NC + /** + * @BATADV_CNT_NC_CODE: transmitted nc-combined traffic packet counter + */ BATADV_CNT_NC_CODE, + + /** + * @BATADV_CNT_NC_CODE_BYTES: transmitted nc-combined traffic bytes + * counter + */ BATADV_CNT_NC_CODE_BYTES, + + /** + * @BATADV_CNT_NC_RECODE: transmitted nc-recombined traffic packet + * counter + */ BATADV_CNT_NC_RECODE, + + /** + * @BATADV_CNT_NC_RECODE_BYTES: transmitted nc-recombined traffic bytes + * counter + */ BATADV_CNT_NC_RECODE_BYTES, + + /** + * @BATADV_CNT_NC_BUFFER: counter for packets buffered for later nc + * decoding + */ BATADV_CNT_NC_BUFFER, + + /** + * @BATADV_CNT_NC_DECODE: received and nc-decoded traffic packet counter + */ BATADV_CNT_NC_DECODE, + + /** + * @BATADV_CNT_NC_DECODE_BYTES: received and nc-decoded traffic bytes + * counter + */ BATADV_CNT_NC_DECODE_BYTES, + + /** + * @BATADV_CNT_NC_DECODE_FAILED: received and decode-failed traffic + * packet counter + */ BATADV_CNT_NC_DECODE_FAILED, + + /** + * @BATADV_CNT_NC_SNIFFED: counter for nc-decoded packets received in + * promisc mode. + */ BATADV_CNT_NC_SNIFFED, #endif + + /** @BATADV_CNT_NUM: number of traffic counters */ BATADV_CNT_NUM, }; /** * struct batadv_priv_tt - per mesh interface translation table data - * @vn: translation table version number - * @ogm_append_cnt: counter of number of OGMs containing the local tt diff - * @local_changes: changes registered in an originator interval - * @changes_list: tracks tt local changes within an originator interval - * @local_hash: local translation table hash table - * @global_hash: global translation table hash table - * @req_list: list of pending & unanswered tt_requests - * @roam_list: list of the last roaming events of each client limiting the - * number of roaming events to avoid route flapping - * @changes_list_lock: lock protecting changes_list - * @req_list_lock: lock protecting req_list - * @roam_list_lock: lock protecting roam_list - * @last_changeset: last tt changeset this host has generated - * @last_changeset_len: length of last tt changeset this host has generated - * @last_changeset_lock: lock protecting last_changeset & last_changeset_len - * @commit_lock: prevents from executing a local TT commit while reading the - * local table. The local TT commit is made up by two operations (data - * structure update and metdata -CRC/TTVN- recalculation) and they have to be - * executed atomically in order to avoid another thread to read the - * table/metadata between those. - * @work: work queue callback item for translation table purging */ struct batadv_priv_tt { + /** @vn: translation table version number */ atomic_t vn; + + /** + * @ogm_append_cnt: counter of number of OGMs containing the local tt + * diff + */ atomic_t ogm_append_cnt; + + /** @local_changes: changes registered in an originator interval */ atomic_t local_changes; + + /** + * @changes_list: tracks tt local changes within an originator interval + */ struct list_head changes_list; + + /** @local_hash: local translation table hash table */ struct batadv_hashtable *local_hash; + + /** @global_hash: global translation table hash table */ struct batadv_hashtable *global_hash; + + /** @req_list: list of pending & unanswered tt_requests */ struct hlist_head req_list; + + /** + * @roam_list: list of the last roaming events of each client limiting + * the number of roaming events to avoid route flapping + */ struct list_head roam_list; - spinlock_t changes_list_lock; /* protects changes */ - spinlock_t req_list_lock; /* protects req_list */ - spinlock_t roam_list_lock; /* protects roam_list */ + + /** @changes_list_lock: lock protecting changes_list */ + spinlock_t changes_list_lock; + + /** @req_list_lock: lock protecting req_list */ + spinlock_t req_list_lock; + + /** @roam_list_lock: lock protecting roam_list */ + spinlock_t roam_list_lock; + + /** @last_changeset: last tt changeset this host has generated */ unsigned char *last_changeset; + + /** + * @last_changeset_len: length of last tt changeset this host has + * generated + */ s16 last_changeset_len; - /* protects last_changeset & last_changeset_len */ + + /** + * @last_changeset_lock: lock protecting last_changeset & + * last_changeset_len + */ spinlock_t last_changeset_lock; - /* prevents from executing a commit while reading the table */ + + /** + * @commit_lock: prevents from executing a local TT commit while reading + * the local table. The local TT commit is made up by two operations + * (data structure update and metdata -CRC/TTVN- recalculation) and + * they have to be executed atomically in order to avoid another thread + * to read the table/metadata between those. + */ spinlock_t commit_lock; + + /** @work: work queue callback item for translation table purging */ struct delayed_work work; }; @@ -675,31 +1004,57 @@ struct batadv_priv_tt { /** * struct batadv_priv_bla - per mesh interface bridge loope avoidance data - * @num_requests: number of bla requests in flight - * @claim_hash: hash table containing mesh nodes this host has claimed - * @backbone_hash: hash table containing all detected backbone gateways - * @loopdetect_addr: MAC address used for own loopdetection frames - * @loopdetect_lasttime: time when the loopdetection frames were sent - * @loopdetect_next: how many periods to wait for the next loopdetect process - * @bcast_duplist: recently received broadcast packets array (for broadcast - * duplicate suppression) - * @bcast_duplist_curr: index of last broadcast packet added to bcast_duplist - * @bcast_duplist_lock: lock protecting bcast_duplist & bcast_duplist_curr - * @claim_dest: local claim data (e.g. claim group) - * @work: work queue callback item for cleanups & bla announcements */ struct batadv_priv_bla { + /** @num_requests: number of bla requests in flight */ atomic_t num_requests; + + /** + * @claim_hash: hash table containing mesh nodes this host has claimed + */ struct batadv_hashtable *claim_hash; + + /** + * @backbone_hash: hash table containing all detected backbone gateways + */ struct batadv_hashtable *backbone_hash; + + /** @loopdetect_addr: MAC address used for own loopdetection frames */ u8 loopdetect_addr[ETH_ALEN]; + + /** + * @loopdetect_lasttime: time when the loopdetection frames were sent + */ unsigned long loopdetect_lasttime; + + /** + * @loopdetect_next: how many periods to wait for the next loopdetect + * process + */ atomic_t loopdetect_next; + + /** + * @bcast_duplist: recently received broadcast packets array (for + * broadcast duplicate suppression) + */ struct batadv_bcast_duplist_entry bcast_duplist[BATADV_DUPLIST_SIZE]; + + /** + * @bcast_duplist_curr: index of last broadcast packet added to + * bcast_duplist + */ int bcast_duplist_curr; - /* protects bcast_duplist & bcast_duplist_curr */ + + /** + * @bcast_duplist_lock: lock protecting bcast_duplist & + * bcast_duplist_curr + */ spinlock_t bcast_duplist_lock; + + /** @claim_dest: local claim data (e.g. claim group) */ struct batadv_bla_claim_dst claim_dest; + + /** @work: work queue callback item for cleanups & bla announcements */ struct delayed_work work; }; #endif @@ -708,68 +1063,94 @@ struct batadv_priv_bla { /** * struct batadv_priv_debug_log - debug logging data - * @log_buff: buffer holding the logs (ring bufer) - * @log_start: index of next character to read - * @log_end: index of next character to write - * @lock: lock protecting log_buff, log_start & log_end - * @queue_wait: log reader's wait queue */ struct batadv_priv_debug_log { + /** @log_buff: buffer holding the logs (ring bufer) */ char log_buff[BATADV_LOG_BUF_LEN]; + + /** @log_start: index of next character to read */ unsigned long log_start; + + /** @log_end: index of next character to write */ unsigned long log_end; - spinlock_t lock; /* protects log_buff, log_start and log_end */ + + /** @lock: lock protecting log_buff, log_start & log_end */ + spinlock_t lock; + + /** @queue_wait: log reader's wait queue */ wait_queue_head_t queue_wait; }; #endif /** * struct batadv_priv_gw - per mesh interface gateway data - * @gateway_list: list of available gateway nodes - * @list_lock: lock protecting gateway_list & curr_gw - * @curr_gw: pointer to currently selected gateway node - * @mode: gateway operation: off, client or server (see batadv_gw_modes) - * @sel_class: gateway selection class (applies if gw_mode client) - * @bandwidth_down: advertised uplink download bandwidth (if gw_mode server) - * @bandwidth_up: advertised uplink upload bandwidth (if gw_mode server) - * @reselect: bool indicating a gateway re-selection is in progress */ struct batadv_priv_gw { + /** @gateway_list: list of available gateway nodes */ struct hlist_head gateway_list; - spinlock_t list_lock; /* protects gateway_list & curr_gw */ - struct batadv_gw_node __rcu *curr_gw; /* rcu protected pointer */ + + /** @list_lock: lock protecting gateway_list & curr_gw */ + spinlock_t list_lock; + + /** @curr_gw: pointer to currently selected gateway node */ + struct batadv_gw_node __rcu *curr_gw; + + /** + * @mode: gateway operation: off, client or server (see batadv_gw_modes) + */ atomic_t mode; + + /** @sel_class: gateway selection class (applies if gw_mode client) */ atomic_t sel_class; + + /** + * @bandwidth_down: advertised uplink download bandwidth (if gw_mode + * server) + */ atomic_t bandwidth_down; + + /** + * @bandwidth_up: advertised uplink upload bandwidth (if gw_mode server) + */ atomic_t bandwidth_up; + + /** @reselect: bool indicating a gateway re-selection is in progress */ atomic_t reselect; }; /** * struct batadv_priv_tvlv - per mesh interface tvlv data - * @container_list: list of registered tvlv containers to be sent with each OGM - * @handler_list: list of the various tvlv content handlers - * @container_list_lock: protects tvlv container list access - * @handler_list_lock: protects handler list access */ struct batadv_priv_tvlv { + /** + * @container_list: list of registered tvlv containers to be sent with + * each OGM + */ struct hlist_head container_list; + + /** @handler_list: list of the various tvlv content handlers */ struct hlist_head handler_list; - spinlock_t container_list_lock; /* protects container_list */ - spinlock_t handler_list_lock; /* protects handler_list */ + + /** @container_list_lock: protects tvlv container list access */ + spinlock_t container_list_lock; + + /** @handler_list_lock: protects handler list access */ + spinlock_t handler_list_lock; }; #ifdef CONFIG_BATMAN_ADV_DAT /** * struct batadv_priv_dat - per mesh interface DAT private data - * @addr: node DAT address - * @hash: hashtable representing the local ARP cache - * @work: work queue callback item for cache purging */ struct batadv_priv_dat { + /** @addr: node DAT address */ batadv_dat_addr_t addr; + + /** @hash: hashtable representing the local ARP cache */ struct batadv_hashtable *hash; + + /** @work: work queue callback item for cache purging */ struct delayed_work work; }; #endif @@ -777,375 +1158,582 @@ struct batadv_priv_dat { #ifdef CONFIG_BATMAN_ADV_MCAST /** * struct batadv_mcast_querier_state - IGMP/MLD querier state when bridged - * @exists: whether a querier exists in the mesh - * @shadowing: if a querier exists, whether it is potentially shadowing - * multicast listeners (i.e. querier is behind our own bridge segment) */ struct batadv_mcast_querier_state { + /** @exists: whether a querier exists in the mesh */ bool exists; + + /** + * @shadowing: if a querier exists, whether it is potentially shadowing + * multicast listeners (i.e. querier is behind our own bridge segment) + */ bool shadowing; }; /** * struct batadv_priv_mcast - per mesh interface mcast data - * @mla_list: list of multicast addresses we are currently announcing via TT - * @want_all_unsnoopables_list: a list of orig_nodes wanting all unsnoopable - * multicast traffic - * @want_all_ipv4_list: a list of orig_nodes wanting all IPv4 multicast traffic - * @want_all_ipv6_list: a list of orig_nodes wanting all IPv6 multicast traffic - * @querier_ipv4: the current state of an IGMP querier in the mesh - * @querier_ipv6: the current state of an MLD querier in the mesh - * @flags: the flags we have last sent in our mcast tvlv - * @enabled: whether the multicast tvlv is currently enabled - * @bridged: whether the soft interface has a bridge on top - * @num_disabled: number of nodes that have no mcast tvlv - * @num_want_all_unsnoopables: number of nodes wanting unsnoopable IP traffic - * @num_want_all_ipv4: counter for items in want_all_ipv4_list - * @num_want_all_ipv6: counter for items in want_all_ipv6_list - * @want_lists_lock: lock for protecting modifications to mcast want lists - * (traversals are rcu-locked) - * @work: work queue callback item for multicast TT and TVLV updates */ struct batadv_priv_mcast { + /** + * @mla_list: list of multicast addresses we are currently announcing + * via TT + */ struct hlist_head mla_list; /* see __batadv_mcast_mla_update() */ + + /** + * @want_all_unsnoopables_list: a list of orig_nodes wanting all + * unsnoopable multicast traffic + */ struct hlist_head want_all_unsnoopables_list; + + /** + * @want_all_ipv4_list: a list of orig_nodes wanting all IPv4 multicast + * traffic + */ struct hlist_head want_all_ipv4_list; + + /** + * @want_all_ipv6_list: a list of orig_nodes wanting all IPv6 multicast + * traffic + */ struct hlist_head want_all_ipv6_list; + + /** @querier_ipv4: the current state of an IGMP querier in the mesh */ struct batadv_mcast_querier_state querier_ipv4; + + /** @querier_ipv6: the current state of an MLD querier in the mesh */ struct batadv_mcast_querier_state querier_ipv6; + + /** @flags: the flags we have last sent in our mcast tvlv */ u8 flags; + + /** @enabled: whether the multicast tvlv is currently enabled */ bool enabled; + + /** @bridged: whether the soft interface has a bridge on top */ bool bridged; + + /** @num_disabled: number of nodes that have no mcast tvlv */ atomic_t num_disabled; + + /** + * @num_want_all_unsnoopables: number of nodes wanting unsnoopable IP + * traffic + */ atomic_t num_want_all_unsnoopables; + + /** @num_want_all_ipv4: counter for items in want_all_ipv4_list */ atomic_t num_want_all_ipv4; + + /** @num_want_all_ipv6: counter for items in want_all_ipv6_list */ atomic_t num_want_all_ipv6; - /* protects want_all_{unsnoopables,ipv4,ipv6}_list */ + + /** + * @want_lists_lock: lock for protecting modifications to mcasts + * want_all_{unsnoopables,ipv4,ipv6}_list (traversals are rcu-locked) + */ spinlock_t want_lists_lock; + + /** @work: work queue callback item for multicast TT and TVLV updates */ struct delayed_work work; }; #endif /** * struct batadv_priv_nc - per mesh interface network coding private data - * @work: work queue callback item for cleanup - * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs - * @min_tq: only consider neighbors for encoding if neigh_tq > min_tq - * @max_fwd_delay: maximum packet forward delay to allow coding of packets - * @max_buffer_time: buffer time for sniffed packets used to decoding - * @timestamp_fwd_flush: timestamp of last forward packet queue flush - * @timestamp_sniffed_purge: timestamp of last sniffed packet queue purge - * @coding_hash: Hash table used to buffer skbs while waiting for another - * incoming skb to code it with. Skbs are added to the buffer just before being - * forwarded in routing.c - * @decoding_hash: Hash table used to buffer skbs that might be needed to decode - * a received coded skb. The buffer is used for 1) skbs arriving on the - * soft-interface; 2) skbs overheard on the hard-interface; and 3) skbs - * forwarded by batman-adv. */ struct batadv_priv_nc { + /** @work: work queue callback item for cleanup */ struct delayed_work work; + + /** + * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs + */ struct dentry *debug_dir; + + /** + * @min_tq: only consider neighbors for encoding if neigh_tq > min_tq + */ u8 min_tq; + + /** + * @max_fwd_delay: maximum packet forward delay to allow coding of + * packets + */ u32 max_fwd_delay; + + /** + * @max_buffer_time: buffer time for sniffed packets used to decoding + */ u32 max_buffer_time; + + /** + * @timestamp_fwd_flush: timestamp of last forward packet queue flush + */ unsigned long timestamp_fwd_flush; + + /** + * @timestamp_sniffed_purge: timestamp of last sniffed packet queue + * purge + */ unsigned long timestamp_sniffed_purge; + + /** + * @coding_hash: Hash table used to buffer skbs while waiting for + * another incoming skb to code it with. Skbs are added to the buffer + * just before being forwarded in routing.c + */ struct batadv_hashtable *coding_hash; + + /** + * @decoding_hash: Hash table used to buffer skbs that might be needed + * to decode a received coded skb. The buffer is used for 1) skbs + * arriving on the soft-interface; 2) skbs overheard on the + * hard-interface; and 3) skbs forwarded by batman-adv. + */ struct batadv_hashtable *decoding_hash; }; /** * struct batadv_tp_unacked - unacked packet meta-information - * @seqno: seqno of the unacked packet - * @len: length of the packet - * @list: list node for batadv_tp_vars::unacked_list * * This struct is supposed to represent a buffer unacked packet. However, since * the purpose of the TP meter is to count the traffic only, there is no need to * store the entire sk_buff, the starting offset and the length are enough */ struct batadv_tp_unacked { + /** @seqno: seqno of the unacked packet */ u32 seqno; + + /** @len: length of the packet */ u16 len; + + /** @list: list node for &batadv_tp_vars.unacked_list */ struct list_head list; }; /** * enum batadv_tp_meter_role - Modus in tp meter session - * @BATADV_TP_RECEIVER: Initialized as receiver - * @BATADV_TP_SENDER: Initialized as sender */ enum batadv_tp_meter_role { + /** @BATADV_TP_RECEIVER: Initialized as receiver */ BATADV_TP_RECEIVER, + + /** @BATADV_TP_SENDER: Initialized as sender */ BATADV_TP_SENDER }; /** * struct batadv_tp_vars - tp meter private variables per session - * @list: list node for bat_priv::tp_list - * @timer: timer for ack (receiver) and retry (sender) - * @bat_priv: pointer to the mesh object - * @start_time: start time in jiffies - * @other_end: mac address of remote - * @role: receiver/sender modi - * @sending: sending binary semaphore: 1 if sending, 0 is not - * @reason: reason for a stopped session - * @finish_work: work item for the finishing procedure - * @test_length: test length in milliseconds - * @session: TP session identifier - * @icmp_uid: local ICMP "socket" index - * @dec_cwnd: decimal part of the cwnd used during linear growth - * @cwnd: current size of the congestion window - * @cwnd_lock: lock do protect @cwnd & @dec_cwnd - * @ss_threshold: Slow Start threshold. Once cwnd exceeds this value the - * connection switches to the Congestion Avoidance state - * @last_acked: last acked byte - * @last_sent: last sent byte, not yet acked - * @tot_sent: amount of data sent/ACKed so far - * @dup_acks: duplicate ACKs counter - * @fast_recovery: true if in Fast Recovery mode - * @recover: last sent seqno when entering Fast Recovery - * @rto: sender timeout - * @srtt: smoothed RTT scaled by 2^3 - * @rttvar: RTT variation scaled by 2^2 - * @more_bytes: waiting queue anchor when waiting for more ack/retry timeout - * @prerandom_offset: offset inside the prerandom buffer - * @prerandom_lock: spinlock protecting access to prerandom_offset - * @last_recv: last in-order received packet - * @unacked_list: list of unacked packets (meta-info only) - * @unacked_lock: protect unacked_list - * @last_recv_time: time time (jiffies) a msg was received - * @refcount: number of context where the object is used - * @rcu: struct used for freeing in an RCU-safe manner */ struct batadv_tp_vars { + /** @list: list node for &bat_priv.tp_list */ struct hlist_node list; + + /** @timer: timer for ack (receiver) and retry (sender) */ struct timer_list timer; + + /** @bat_priv: pointer to the mesh object */ struct batadv_priv *bat_priv; + + /** @start_time: start time in jiffies */ unsigned long start_time; + + /** @other_end: mac address of remote */ u8 other_end[ETH_ALEN]; + + /** @role: receiver/sender modi */ enum batadv_tp_meter_role role; + + /** @sending: sending binary semaphore: 1 if sending, 0 is not */ atomic_t sending; + + /** @reason: reason for a stopped session */ enum batadv_tp_meter_reason reason; + + /** @finish_work: work item for the finishing procedure */ struct delayed_work finish_work; + + /** @test_length: test length in milliseconds */ u32 test_length; + + /** @session: TP session identifier */ u8 session[2]; + + /** @icmp_uid: local ICMP "socket" index */ u8 icmp_uid; /* sender variables */ + + /** @dec_cwnd: decimal part of the cwnd used during linear growth */ u16 dec_cwnd; + + /** @cwnd: current size of the congestion window */ u32 cwnd; - spinlock_t cwnd_lock; /* Protects cwnd & dec_cwnd */ + + /** @cwnd_lock: lock do protect @cwnd & @dec_cwnd */ + spinlock_t cwnd_lock; + + /** + * @ss_threshold: Slow Start threshold. Once cwnd exceeds this value the + * connection switches to the Congestion Avoidance state + */ u32 ss_threshold; + + /** @last_acked: last acked byte */ atomic_t last_acked; + + /** @last_sent: last sent byte, not yet acked */ u32 last_sent; + + /** @tot_sent: amount of data sent/ACKed so far */ atomic64_t tot_sent; + + /** @dup_acks: duplicate ACKs counter */ atomic_t dup_acks; + + /** @fast_recovery: true if in Fast Recovery mode */ bool fast_recovery; + + /** @recover: last sent seqno when entering Fast Recovery */ u32 recover; + + /** @rto: sender timeout */ u32 rto; + + /** @srtt: smoothed RTT scaled by 2^3 */ u32 srtt; + + /** @rttvar: RTT variation scaled by 2^2 */ u32 rttvar; + + /** + * @more_bytes: waiting queue anchor when waiting for more ack/retry + * timeout + */ wait_queue_head_t more_bytes; + + /** @prerandom_offset: offset inside the prerandom buffer */ u32 prerandom_offset; - spinlock_t prerandom_lock; /* Protects prerandom_offset */ + + /** @prerandom_lock: spinlock protecting access to prerandom_offset */ + spinlock_t prerandom_lock; /* receiver variables */ + + /** @last_recv: last in-order received packet */ u32 last_recv; + + /** @unacked_list: list of unacked packets (meta-info only) */ struct list_head unacked_list; - spinlock_t unacked_lock; /* Protects unacked_list */ + + /** @unacked_lock: protect unacked_list */ + spinlock_t unacked_lock; + + /** @last_recv_time: time time (jiffies) a msg was received */ unsigned long last_recv_time; + + /** @refcount: number of context where the object is used */ struct kref refcount; + + /** @rcu: struct used for freeing in an RCU-safe manner */ struct rcu_head rcu; }; /** * struct batadv_softif_vlan - per VLAN attributes set - * @bat_priv: pointer to the mesh object - * @vid: VLAN identifier - * @kobj: kobject for sysfs vlan subdirectory - * @ap_isolation: AP isolation state - * @tt: TT private attributes (VLAN specific) - * @list: list node for bat_priv::softif_vlan_list - * @refcount: number of context where this object is currently in use - * @rcu: struct used for freeing in a RCU-safe manner */ struct batadv_softif_vlan { + /** @bat_priv: pointer to the mesh object */ struct batadv_priv *bat_priv; + + /** @vid: VLAN identifier */ unsigned short vid; + + /** @kobj: kobject for sysfs vlan subdirectory */ struct kobject *kobj; + + /** @ap_isolation: AP isolation state */ atomic_t ap_isolation; /* boolean */ + + /** @tt: TT private attributes (VLAN specific) */ struct batadv_vlan_tt tt; + + /** @list: list node for &bat_priv.softif_vlan_list */ struct hlist_node list; + + /** + * @refcount: number of context where this object is currently in use + */ struct kref refcount; + + /** @rcu: struct used for freeing in a RCU-safe manner */ struct rcu_head rcu; }; /** * struct batadv_priv_bat_v - B.A.T.M.A.N. V per soft-interface private data - * @ogm_buff: buffer holding the OGM packet - * @ogm_buff_len: length of the OGM packet buffer - * @ogm_seqno: OGM sequence number - used to identify each OGM - * @ogm_wq: workqueue used to schedule OGM transmissions */ struct batadv_priv_bat_v { + /** @ogm_buff: buffer holding the OGM packet */ unsigned char *ogm_buff; + + /** @ogm_buff_len: length of the OGM packet buffer */ int ogm_buff_len; + + /** @ogm_seqno: OGM sequence number - used to identify each OGM */ atomic_t ogm_seqno; + + /** @ogm_wq: workqueue used to schedule OGM transmissions */ struct delayed_work ogm_wq; }; /** * struct batadv_priv - per mesh interface data - * @mesh_state: current status of the mesh (inactive/active/deactivating) - * @soft_iface: net device which holds this struct as private data - * @bat_counters: mesh internal traffic statistic counters (see batadv_counters) - * @aggregated_ogms: bool indicating whether OGM aggregation is enabled - * @bonding: bool indicating whether traffic bonding is enabled - * @fragmentation: bool indicating whether traffic fragmentation is enabled - * @packet_size_max: max packet size that can be transmitted via - * multiple fragmented skbs or a single frame if fragmentation is disabled - * @frag_seqno: incremental counter to identify chains of egress fragments - * @bridge_loop_avoidance: bool indicating whether bridge loop avoidance is - * enabled - * @distributed_arp_table: bool indicating whether distributed ARP table is - * enabled - * @multicast_mode: Enable or disable multicast optimizations on this node's - * sender/originating side - * @orig_interval: OGM broadcast interval in milliseconds - * @hop_penalty: penalty which will be applied to an OGM's tq-field on every hop - * @log_level: configured log level (see batadv_dbg_level) - * @isolation_mark: the skb->mark value used to match packets for AP isolation - * @isolation_mark_mask: bitmask identifying the bits in skb->mark to be used - * for the isolation mark - * @bcast_seqno: last sent broadcast packet sequence number - * @bcast_queue_left: number of remaining buffered broadcast packet slots - * @batman_queue_left: number of remaining OGM packet slots - * @num_ifaces: number of interfaces assigned to this mesh interface - * @mesh_obj: kobject for sysfs mesh subdirectory - * @debug_dir: dentry for debugfs batman-adv subdirectory - * @forw_bat_list: list of aggregated OGMs that will be forwarded - * @forw_bcast_list: list of broadcast packets that will be rebroadcasted - * @tp_list: list of tp sessions - * @tp_num: number of currently active tp sessions - * @orig_hash: hash table containing mesh participants (orig nodes) - * @forw_bat_list_lock: lock protecting forw_bat_list - * @forw_bcast_list_lock: lock protecting forw_bcast_list - * @tp_list_lock: spinlock protecting @tp_list - * @orig_work: work queue callback item for orig node purging - * @primary_if: one of the hard-interfaces assigned to this mesh interface - * becomes the primary interface - * @algo_ops: routing algorithm used by this mesh interface - * @softif_vlan_list: a list of softif_vlan structs, one per VLAN created on top - * of the mesh interface represented by this object - * @softif_vlan_list_lock: lock protecting softif_vlan_list - * @bla: bridge loope avoidance data - * @debug_log: holding debug logging relevant data - * @gw: gateway data - * @tt: translation table data - * @tvlv: type-version-length-value data - * @dat: distributed arp table data - * @mcast: multicast data - * @network_coding: bool indicating whether network coding is enabled - * @nc: network coding data - * @bat_v: B.A.T.M.A.N. V per soft-interface private data */ struct batadv_priv { + /** + * @mesh_state: current status of the mesh + * (inactive/active/deactivating) + */ atomic_t mesh_state; + + /** @soft_iface: net device which holds this struct as private data */ struct net_device *soft_iface; + + /** + * @bat_counters: mesh internal traffic statistic counters (see + * batadv_counters) + */ u64 __percpu *bat_counters; /* Per cpu counters */ + + /** + * @aggregated_ogms: bool indicating whether OGM aggregation is enabled + */ atomic_t aggregated_ogms; + + /** @bonding: bool indicating whether traffic bonding is enabled */ atomic_t bonding; + + /** + * @fragmentation: bool indicating whether traffic fragmentation is + * enabled + */ atomic_t fragmentation; + + /** + * @packet_size_max: max packet size that can be transmitted via + * multiple fragmented skbs or a single frame if fragmentation is + * disabled + */ atomic_t packet_size_max; + + /** + * @frag_seqno: incremental counter to identify chains of egress + * fragments + */ atomic_t frag_seqno; + #ifdef CONFIG_BATMAN_ADV_BLA + /** + * @bridge_loop_avoidance: bool indicating whether bridge loop + * avoidance is enabled + */ atomic_t bridge_loop_avoidance; #endif + #ifdef CONFIG_BATMAN_ADV_DAT + /** + * @distributed_arp_table: bool indicating whether distributed ARP table + * is enabled + */ atomic_t distributed_arp_table; #endif + #ifdef CONFIG_BATMAN_ADV_MCAST + /** + * @multicast_mode: Enable or disable multicast optimizations on this + * node's sender/originating side + */ atomic_t multicast_mode; #endif + + /** @orig_interval: OGM broadcast interval in milliseconds */ atomic_t orig_interval; + + /** + * @hop_penalty: penalty which will be applied to an OGM's tq-field on + * every hop + */ atomic_t hop_penalty; + #ifdef CONFIG_BATMAN_ADV_DEBUG + /** @log_level: configured log level (see batadv_dbg_level) */ atomic_t log_level; #endif + + /** + * @isolation_mark: the skb->mark value used to match packets for AP + * isolation + */ u32 isolation_mark; + + /** + * @isolation_mark_mask: bitmask identifying the bits in skb->mark to be + * used for the isolation mark + */ u32 isolation_mark_mask; + + /** @bcast_seqno: last sent broadcast packet sequence number */ atomic_t bcast_seqno; + + /** + * @bcast_queue_left: number of remaining buffered broadcast packet + * slots + */ atomic_t bcast_queue_left; + + /** @batman_queue_left: number of remaining OGM packet slots */ atomic_t batman_queue_left; + + /** @num_ifaces: number of interfaces assigned to this mesh interface */ char num_ifaces; + + /** @mesh_obj: kobject for sysfs mesh subdirectory */ struct kobject *mesh_obj; + + /** @debug_dir: dentry for debugfs batman-adv subdirectory */ struct dentry *debug_dir; + + /** @forw_bat_list: list of aggregated OGMs that will be forwarded */ struct hlist_head forw_bat_list; + + /** + * @forw_bcast_list: list of broadcast packets that will be + * rebroadcasted + */ struct hlist_head forw_bcast_list; + + /** @tp_list: list of tp sessions */ struct hlist_head tp_list; + + /** @tp_num: number of currently active tp sessions */ struct batadv_hashtable *orig_hash; - spinlock_t forw_bat_list_lock; /* protects forw_bat_list */ - spinlock_t forw_bcast_list_lock; /* protects forw_bcast_list */ - spinlock_t tp_list_lock; /* protects tp_list */ + + /** @orig_hash: hash table containing mesh participants (orig nodes) */ + spinlock_t forw_bat_list_lock; + + /** @forw_bat_list_lock: lock protecting forw_bat_list */ + spinlock_t forw_bcast_list_lock; + + /** @forw_bcast_list_lock: lock protecting forw_bcast_list */ + spinlock_t tp_list_lock; + + /** @tp_list_lock: spinlock protecting @tp_list */ atomic_t tp_num; + + /** @orig_work: work queue callback item for orig node purging */ struct delayed_work orig_work; + + /** + * @primary_if: one of the hard-interfaces assigned to this mesh + * interface becomes the primary interface + */ struct batadv_hard_iface __rcu *primary_if; /* rcu protected pointer */ + + /** @algo_ops: routing algorithm used by this mesh interface */ struct batadv_algo_ops *algo_ops; + + /** + * @softif_vlan_list: a list of softif_vlan structs, one per VLAN + * created on top of the mesh interface represented by this object + */ struct hlist_head softif_vlan_list; - spinlock_t softif_vlan_list_lock; /* protects softif_vlan_list */ + + /** @softif_vlan_list_lock: lock protecting softif_vlan_list */ + spinlock_t softif_vlan_list_lock; + #ifdef CONFIG_BATMAN_ADV_BLA + /** @bla: bridge loope avoidance data */ struct batadv_priv_bla bla; #endif + #ifdef CONFIG_BATMAN_ADV_DEBUG + /** @debug_log: holding debug logging relevant data */ struct batadv_priv_debug_log *debug_log; #endif + + /** @gw: gateway data */ struct batadv_priv_gw gw; + + /** @tt: translation table data */ struct batadv_priv_tt tt; + + /** @tvlv: type-version-length-value data */ struct batadv_priv_tvlv tvlv; + #ifdef CONFIG_BATMAN_ADV_DAT + /** @dat: distributed arp table data */ struct batadv_priv_dat dat; #endif + #ifdef CONFIG_BATMAN_ADV_MCAST + /** @mcast: multicast data */ struct batadv_priv_mcast mcast; #endif + #ifdef CONFIG_BATMAN_ADV_NC + /** + * @network_coding: bool indicating whether network coding is enabled + */ atomic_t network_coding; + + /** @nc: network coding data */ struct batadv_priv_nc nc; #endif /* CONFIG_BATMAN_ADV_NC */ + #ifdef CONFIG_BATMAN_ADV_BATMAN_V + /** @bat_v: B.A.T.M.A.N. V per soft-interface private data */ struct batadv_priv_bat_v bat_v; #endif }; /** * struct batadv_socket_client - layer2 icmp socket client data - * @queue_list: packet queue for packets destined for this socket client - * @queue_len: number of packets in the packet queue (queue_list) - * @index: socket client's index in the batadv_socket_client_hash - * @lock: lock protecting queue_list, queue_len & index - * @queue_wait: socket client's wait queue - * @bat_priv: pointer to soft_iface this client belongs to */ struct batadv_socket_client { + /** + * @queue_list: packet queue for packets destined for this socket client + */ struct list_head queue_list; + + /** @queue_len: number of packets in the packet queue (queue_list) */ unsigned int queue_len; + + /** @index: socket client's index in the batadv_socket_client_hash */ unsigned char index; - spinlock_t lock; /* protects queue_list, queue_len & index */ + + /** @lock: lock protecting queue_list, queue_len & index */ + spinlock_t lock; + + /** @queue_wait: socket client's wait queue */ wait_queue_head_t queue_wait; + + /** @bat_priv: pointer to soft_iface this client belongs to */ struct batadv_priv *bat_priv; }; /** * struct batadv_socket_packet - layer2 icmp packet for socket client - * @list: list node for batadv_socket_client::queue_list - * @icmp_len: size of the layer2 icmp packet - * @icmp_packet: layer2 icmp packet */ struct batadv_socket_packet { + /** @list: list node for &batadv_socket_client.queue_list */ struct list_head list; + + /** @icmp_len: size of the layer2 icmp packet */ size_t icmp_len; + + /** @icmp_packet: layer2 icmp packet */ u8 icmp_packet[BATADV_ICMP_MAX_PACKET_SIZE]; }; @@ -1153,312 +1741,432 @@ struct batadv_socket_packet { /** * struct batadv_bla_backbone_gw - batman-adv gateway bridged into the LAN - * @orig: originator address of backbone node (mac address of primary iface) - * @vid: vlan id this gateway was detected on - * @hash_entry: hlist node for batadv_priv_bla::backbone_hash - * @bat_priv: pointer to soft_iface this backbone gateway belongs to - * @lasttime: last time we heard of this backbone gw - * @wait_periods: grace time for bridge forward delays and bla group forming at - * bootup phase - no bcast traffic is formwared until it has elapsed - * @request_sent: if this bool is set to true we are out of sync with this - * backbone gateway - no bcast traffic is formwared until the situation was - * resolved - * @crc: crc16 checksum over all claims - * @crc_lock: lock protecting crc - * @report_work: work struct for reporting detected loops - * @refcount: number of contexts the object is used - * @rcu: struct used for freeing in an RCU-safe manner */ struct batadv_bla_backbone_gw { + /** + * @orig: originator address of backbone node (mac address of primary + * iface) + */ u8 orig[ETH_ALEN]; + + /** @vid: vlan id this gateway was detected on */ unsigned short vid; + + /** @hash_entry: hlist node for &batadv_priv_bla.backbone_hash */ struct hlist_node hash_entry; + + /** @bat_priv: pointer to soft_iface this backbone gateway belongs to */ struct batadv_priv *bat_priv; + + /** @lasttime: last time we heard of this backbone gw */ unsigned long lasttime; + + /** + * @wait_periods: grace time for bridge forward delays and bla group + * forming at bootup phase - no bcast traffic is formwared until it has + * elapsed + */ atomic_t wait_periods; + + /** + * @request_sent: if this bool is set to true we are out of sync with + * this backbone gateway - no bcast traffic is formwared until the + * situation was resolved + */ atomic_t request_sent; + + /** @crc: crc16 checksum over all claims */ u16 crc; - spinlock_t crc_lock; /* protects crc */ + + /** @crc_lock: lock protecting crc */ + spinlock_t crc_lock; + + /** @report_work: work struct for reporting detected loops */ struct work_struct report_work; + + /** @refcount: number of contexts the object is used */ struct kref refcount; + + /** @rcu: struct used for freeing in an RCU-safe manner */ struct rcu_head rcu; }; /** * struct batadv_bla_claim - claimed non-mesh client structure - * @addr: mac address of claimed non-mesh client - * @vid: vlan id this client was detected on - * @backbone_gw: pointer to backbone gw claiming this client - * @backbone_lock: lock protecting backbone_gw pointer - * @lasttime: last time we heard of claim (locals only) - * @hash_entry: hlist node for batadv_priv_bla::claim_hash - * @refcount: number of contexts the object is used - * @rcu: struct used for freeing in an RCU-safe manner */ struct batadv_bla_claim { + /** @addr: mac address of claimed non-mesh client */ u8 addr[ETH_ALEN]; + + /** @vid: vlan id this client was detected on */ unsigned short vid; + + /** @backbone_gw: pointer to backbone gw claiming this client */ struct batadv_bla_backbone_gw *backbone_gw; - spinlock_t backbone_lock; /* protects backbone_gw */ + + /** @backbone_lock: lock protecting backbone_gw pointer */ + spinlock_t backbone_lock; + + /** @lasttime: last time we heard of claim (locals only) */ unsigned long lasttime; + + /** @hash_entry: hlist node for &batadv_priv_bla.claim_hash */ struct hlist_node hash_entry; + + /** @refcount: number of contexts the object is used */ struct rcu_head rcu; + + /** @rcu: struct used for freeing in an RCU-safe manner */ struct kref refcount; }; #endif /** * struct batadv_tt_common_entry - tt local & tt global common data - * @addr: mac address of non-mesh client - * @vid: VLAN identifier - * @hash_entry: hlist node for batadv_priv_tt::local_hash or for - * batadv_priv_tt::global_hash - * @flags: various state handling flags (see batadv_tt_client_flags) - * @added_at: timestamp used for purging stale tt common entries - * @refcount: number of contexts the object is used - * @rcu: struct used for freeing in an RCU-safe manner */ struct batadv_tt_common_entry { + /** @addr: mac address of non-mesh client */ u8 addr[ETH_ALEN]; + + /** @vid: VLAN identifier */ unsigned short vid; + + /** + * @hash_entry: hlist node for &batadv_priv_tt.local_hash or for + * &batadv_priv_tt.global_hash + */ struct hlist_node hash_entry; + + /** @flags: various state handling flags (see batadv_tt_client_flags) */ u16 flags; + + /** @added_at: timestamp used for purging stale tt common entries */ unsigned long added_at; + + /** @refcount: number of contexts the object is used */ struct kref refcount; + + /** @rcu: struct used for freeing in an RCU-safe manner */ struct rcu_head rcu; }; /** * struct batadv_tt_local_entry - translation table local entry data - * @common: general translation table data - * @last_seen: timestamp used for purging stale tt local entries - * @vlan: soft-interface vlan of the entry */ struct batadv_tt_local_entry { + /** @common: general translation table data */ struct batadv_tt_common_entry common; + + /** @last_seen: timestamp used for purging stale tt local entries */ unsigned long last_seen; + + /** @vlan: soft-interface vlan of the entry */ struct batadv_softif_vlan *vlan; }; /** * struct batadv_tt_global_entry - translation table global entry data - * @common: general translation table data - * @orig_list: list of orig nodes announcing this non-mesh client - * @orig_list_count: number of items in the orig_list - * @list_lock: lock protecting orig_list - * @roam_at: time at which TT_GLOBAL_ROAM was set */ struct batadv_tt_global_entry { + /** @common: general translation table data */ struct batadv_tt_common_entry common; + + /** @orig_list: list of orig nodes announcing this non-mesh client */ struct hlist_head orig_list; + + /** @orig_list_count: number of items in the orig_list */ atomic_t orig_list_count; - spinlock_t list_lock; /* protects orig_list */ + + /** @list_lock: lock protecting orig_list */ + spinlock_t list_lock; + + /** @roam_at: time at which TT_GLOBAL_ROAM was set */ unsigned long roam_at; }; /** * struct batadv_tt_orig_list_entry - orig node announcing a non-mesh client - * @orig_node: pointer to orig node announcing this non-mesh client - * @ttvn: translation table version number which added the non-mesh client - * @flags: per orig entry TT sync flags - * @list: list node for batadv_tt_global_entry::orig_list - * @refcount: number of contexts the object is used - * @rcu: struct used for freeing in an RCU-safe manner */ struct batadv_tt_orig_list_entry { + /** @orig_node: pointer to orig node announcing this non-mesh client */ struct batadv_orig_node *orig_node; + + /** + * @ttvn: translation table version number which added the non-mesh + * client + */ u8 ttvn; + + /** @flags: per orig entry TT sync flags */ u8 flags; + + /** @list: list node for &batadv_tt_global_entry.orig_list */ struct hlist_node list; + + /** @refcount: number of contexts the object is used */ struct kref refcount; + + /** @rcu: struct used for freeing in an RCU-safe manner */ struct rcu_head rcu; }; /** * struct batadv_tt_change_node - structure for tt changes occurred - * @list: list node for batadv_priv_tt::changes_list - * @change: holds the actual translation table diff data */ struct batadv_tt_change_node { + /** @list: list node for &batadv_priv_tt.changes_list */ struct list_head list; + + /** @change: holds the actual translation table diff data */ struct batadv_tvlv_tt_change change; }; /** * struct batadv_tt_req_node - data to keep track of the tt requests in flight - * @addr: mac address address of the originator this request was sent to - * @issued_at: timestamp used for purging stale tt requests - * @refcount: number of contexts the object is used by - * @list: list node for batadv_priv_tt::req_list */ struct batadv_tt_req_node { + /** + * @addr: mac address address of the originator this request was sent to + */ u8 addr[ETH_ALEN]; + + /** @issued_at: timestamp used for purging stale tt requests */ unsigned long issued_at; + + /** @refcount: number of contexts the object is used by */ struct kref refcount; + + /** @list: list node for &batadv_priv_tt.req_list */ struct hlist_node list; }; /** * struct batadv_tt_roam_node - roaming client data - * @addr: mac address of the client in the roaming phase - * @counter: number of allowed roaming events per client within a single - * OGM interval (changes are committed with each OGM) - * @first_time: timestamp used for purging stale roaming node entries - * @list: list node for batadv_priv_tt::roam_list */ struct batadv_tt_roam_node { + /** @addr: mac address of the client in the roaming phase */ u8 addr[ETH_ALEN]; + + /** + * @counter: number of allowed roaming events per client within a single + * OGM interval (changes are committed with each OGM) + */ atomic_t counter; + + /** + * @first_time: timestamp used for purging stale roaming node entries + */ unsigned long first_time; + + /** @list: list node for &batadv_priv_tt.roam_list */ struct list_head list; }; /** * struct batadv_nc_node - network coding node - * @list: next and prev pointer for the list handling - * @addr: the node's mac address - * @refcount: number of contexts the object is used by - * @rcu: struct used for freeing in an RCU-safe manner - * @orig_node: pointer to corresponding orig node struct - * @last_seen: timestamp of last ogm received from this node */ struct batadv_nc_node { + /** @list: next and prev pointer for the list handling */ struct list_head list; + + /** @addr: the node's mac address */ u8 addr[ETH_ALEN]; + + /** @refcount: number of contexts the object is used by */ struct kref refcount; + + /** @rcu: struct used for freeing in an RCU-safe manner */ struct rcu_head rcu; + + /** @orig_node: pointer to corresponding orig node struct */ struct batadv_orig_node *orig_node; + + /** @last_seen: timestamp of last ogm received from this node */ unsigned long last_seen; }; /** * struct batadv_nc_path - network coding path - * @hash_entry: next and prev pointer for the list handling - * @rcu: struct used for freeing in an RCU-safe manner - * @refcount: number of contexts the object is used by - * @packet_list: list of buffered packets for this path - * @packet_list_lock: access lock for packet list - * @next_hop: next hop (destination) of path - * @prev_hop: previous hop (source) of path - * @last_valid: timestamp for last validation of path */ struct batadv_nc_path { + /** @hash_entry: next and prev pointer for the list handling */ struct hlist_node hash_entry; + + /** @rcu: struct used for freeing in an RCU-safe manner */ struct rcu_head rcu; + + /** @refcount: number of contexts the object is used by */ struct kref refcount; + + /** @packet_list: list of buffered packets for this path */ struct list_head packet_list; - spinlock_t packet_list_lock; /* Protects packet_list */ + + /** @packet_list_lock: access lock for packet list */ + spinlock_t packet_list_lock; + + /** @next_hop: next hop (destination) of path */ u8 next_hop[ETH_ALEN]; + + /** @prev_hop: previous hop (source) of path */ u8 prev_hop[ETH_ALEN]; + + /** @last_valid: timestamp for last validation of path */ unsigned long last_valid; }; /** * struct batadv_nc_packet - network coding packet used when coding and * decoding packets - * @list: next and prev pointer for the list handling - * @packet_id: crc32 checksum of skb data - * @timestamp: field containing the info when the packet was added to path - * @neigh_node: pointer to original next hop neighbor of skb - * @skb: skb which can be encoded or used for decoding - * @nc_path: pointer to path this nc packet is attached to */ struct batadv_nc_packet { + /** @list: next and prev pointer for the list handling */ struct list_head list; + + /** @packet_id: crc32 checksum of skb data */ __be32 packet_id; + + /** + * @timestamp: field containing the info when the packet was added to + * path + */ unsigned long timestamp; + + /** @neigh_node: pointer to original next hop neighbor of skb */ struct batadv_neigh_node *neigh_node; + + /** @skb: skb which can be encoded or used for decoding */ struct sk_buff *skb; + + /** @nc_path: pointer to path this nc packet is attached to */ struct batadv_nc_path *nc_path; }; /** * struct batadv_skb_cb - control buffer structure used to store private data * relevant to batman-adv in the skb->cb buffer in skbs. - * @decoded: Marks a skb as decoded, which is checked when searching for coding - * opportunities in network-coding.c - * @num_bcasts: Counter for broadcast packet retransmissions */ struct batadv_skb_cb { + /** + * @decoded: Marks a skb as decoded, which is checked when searching for + * coding opportunities in network-coding.c + */ bool decoded; + + /** @num_bcasts: Counter for broadcast packet retransmissions */ unsigned int num_bcasts; }; /** * struct batadv_forw_packet - structure for bcast packets to be sent/forwarded - * @list: list node for batadv_priv::forw_{bat,bcast}_list - * @cleanup_list: list node for purging functions - * @send_time: execution time for delayed_work (packet sending) - * @own: bool for locally generated packets (local OGMs are re-scheduled after - * sending) - * @skb: bcast packet's skb buffer - * @packet_len: size of aggregated OGM packet inside the skb buffer - * @direct_link_flags: direct link flags for aggregated OGM packets - * @num_packets: counter for aggregated OGMv1 packets - * @delayed_work: work queue callback item for packet sending - * @if_incoming: pointer to incoming hard-iface or primary iface if - * locally generated packet - * @if_outgoing: packet where the packet should be sent to, or NULL if - * unspecified - * @queue_left: The queue (counter) this packet was applied to */ struct batadv_forw_packet { + /** + * @list: list node for &batadv_priv.forw.bcast_list and + * &batadv_priv.forw.bat_list + */ struct hlist_node list; + + /** @cleanup_list: list node for purging functions */ struct hlist_node cleanup_list; + + /** @send_time: execution time for delayed_work (packet sending) */ unsigned long send_time; + + /** + * @own: bool for locally generated packets (local OGMs are re-scheduled + * after sending) + */ u8 own; + + /** @skb: bcast packet's skb buffer */ struct sk_buff *skb; + + /** @packet_len: size of aggregated OGM packet inside the skb buffer */ u16 packet_len; + + /** @direct_link_flags: direct link flags for aggregated OGM packets */ u32 direct_link_flags; + + /** @num_packets: counter for aggregated OGMv1 packets */ u8 num_packets; + + /** @delayed_work: work queue callback item for packet sending */ struct delayed_work delayed_work; + + /** + * @if_incoming: pointer to incoming hard-iface or primary iface if + * locally generated packet + */ struct batadv_hard_iface *if_incoming; + + /** + * @if_outgoing: packet where the packet should be sent to, or NULL if + * unspecified + */ struct batadv_hard_iface *if_outgoing; + + /** @queue_left: The queue (counter) this packet was applied to */ atomic_t *queue_left; }; /** * struct batadv_algo_iface_ops - mesh algorithm callbacks (interface specific) - * @activate: start routing mechanisms when hard-interface is brought up - * (optional) - * @enable: init routing info when hard-interface is enabled - * @disable: de-init routing info when hard-interface is disabled - * @update_mac: (re-)init mac addresses of the protocol information - * belonging to this hard-interface - * @primary_set: called when primary interface is selected / changed */ struct batadv_algo_iface_ops { + /** + * @activate: start routing mechanisms when hard-interface is brought up + * (optional) + */ void (*activate)(struct batadv_hard_iface *hard_iface); + + /** @enable: init routing info when hard-interface is enabled */ int (*enable)(struct batadv_hard_iface *hard_iface); + + /** @disable: de-init routing info when hard-interface is disabled */ void (*disable)(struct batadv_hard_iface *hard_iface); + + /** + * @update_mac: (re-)init mac addresses of the protocol information + * belonging to this hard-interface + */ void (*update_mac)(struct batadv_hard_iface *hard_iface); + + /** @primary_set: called when primary interface is selected / changed */ void (*primary_set)(struct batadv_hard_iface *hard_iface); }; /** * struct batadv_algo_neigh_ops - mesh algorithm callbacks (neighbour specific) - * @hardif_init: called on creation of single hop entry - * (optional) - * @cmp: compare the metrics of two neighbors for their respective outgoing - * interfaces - * @is_similar_or_better: check if neigh1 is equally similar or better than - * neigh2 for their respective outgoing interface from the metric prospective - * @print: print the single hop neighbor list (optional) - * @dump: dump neighbors to a netlink socket (optional) */ struct batadv_algo_neigh_ops { + /** @hardif_init: called on creation of single hop entry (optional) */ void (*hardif_init)(struct batadv_hardif_neigh_node *neigh); + + /** + * @cmp: compare the metrics of two neighbors for their respective + * outgoing interfaces + */ int (*cmp)(struct batadv_neigh_node *neigh1, struct batadv_hard_iface *if_outgoing1, struct batadv_neigh_node *neigh2, struct batadv_hard_iface *if_outgoing2); + + /** + * @is_similar_or_better: check if neigh1 is equally similar or better + * than neigh2 for their respective outgoing interface from the metric + * prospective + */ bool (*is_similar_or_better)(struct batadv_neigh_node *neigh1, struct batadv_hard_iface *if_outgoing1, struct batadv_neigh_node *neigh2, struct batadv_hard_iface *if_outgoing2); + #ifdef CONFIG_BATMAN_ADV_DEBUGFS + /** @print: print the single hop neighbor list (optional) */ void (*print)(struct batadv_priv *priv, struct seq_file *seq); #endif + + /** @dump: dump neighbors to a netlink socket (optional) */ void (*dump)(struct sk_buff *msg, struct netlink_callback *cb, struct batadv_priv *priv, struct batadv_hard_iface *hard_iface); @@ -1466,24 +2174,36 @@ struct batadv_algo_neigh_ops { /** * struct batadv_algo_orig_ops - mesh algorithm callbacks (originator specific) - * @free: free the resources allocated by the routing algorithm for an orig_node - * object (optional) - * @add_if: ask the routing algorithm to apply the needed changes to the - * orig_node due to a new hard-interface being added into the mesh (optional) - * @del_if: ask the routing algorithm to apply the needed changes to the - * orig_node due to an hard-interface being removed from the mesh (optional) - * @print: print the originator table (optional) - * @dump: dump originators to a netlink socket (optional) */ struct batadv_algo_orig_ops { + /** + * @free: free the resources allocated by the routing algorithm for an + * orig_node object (optional) + */ void (*free)(struct batadv_orig_node *orig_node); + + /** + * @add_if: ask the routing algorithm to apply the needed changes to the + * orig_node due to a new hard-interface being added into the mesh + * (optional) + */ int (*add_if)(struct batadv_orig_node *orig_node, int max_if_num); + + /** + * @del_if: ask the routing algorithm to apply the needed changes to the + * orig_node due to an hard-interface being removed from the mesh + * (optional) + */ int (*del_if)(struct batadv_orig_node *orig_node, int max_if_num, int del_if_num); + #ifdef CONFIG_BATMAN_ADV_DEBUGFS + /** @print: print the originator table (optional) */ void (*print)(struct batadv_priv *priv, struct seq_file *seq, struct batadv_hard_iface *hard_iface); #endif + + /** @dump: dump originators to a netlink socket (optional) */ void (*dump)(struct sk_buff *msg, struct netlink_callback *cb, struct batadv_priv *priv, struct batadv_hard_iface *hard_iface); @@ -1491,158 +2211,213 @@ struct batadv_algo_orig_ops { /** * struct batadv_algo_gw_ops - mesh algorithm callbacks (GW specific) - * @init_sel_class: initialize GW selection class (optional) - * @store_sel_class: parse and stores a new GW selection class (optional) - * @show_sel_class: prints the current GW selection class (optional) - * @get_best_gw_node: select the best GW from the list of available nodes - * (optional) - * @is_eligible: check if a newly discovered GW is a potential candidate for - * the election as best GW (optional) - * @print: print the gateway table (optional) - * @dump: dump gateways to a netlink socket (optional) */ struct batadv_algo_gw_ops { + /** @init_sel_class: initialize GW selection class (optional) */ void (*init_sel_class)(struct batadv_priv *bat_priv); + + /** + * @store_sel_class: parse and stores a new GW selection class + * (optional) + */ ssize_t (*store_sel_class)(struct batadv_priv *bat_priv, char *buff, size_t count); + + /** @show_sel_class: prints the current GW selection class (optional) */ ssize_t (*show_sel_class)(struct batadv_priv *bat_priv, char *buff); + + /** + * @get_best_gw_node: select the best GW from the list of available + * nodes (optional) + */ struct batadv_gw_node *(*get_best_gw_node) (struct batadv_priv *bat_priv); + + /** + * @is_eligible: check if a newly discovered GW is a potential candidate + * for the election as best GW (optional) + */ bool (*is_eligible)(struct batadv_priv *bat_priv, struct batadv_orig_node *curr_gw_orig, struct batadv_orig_node *orig_node); + #ifdef CONFIG_BATMAN_ADV_DEBUGFS + /** @print: print the gateway table (optional) */ void (*print)(struct batadv_priv *bat_priv, struct seq_file *seq); #endif + + /** @dump: dump gateways to a netlink socket (optional) */ void (*dump)(struct sk_buff *msg, struct netlink_callback *cb, struct batadv_priv *priv); }; /** * struct batadv_algo_ops - mesh algorithm callbacks - * @list: list node for the batadv_algo_list - * @name: name of the algorithm - * @iface: callbacks related to interface handling - * @neigh: callbacks related to neighbors handling - * @orig: callbacks related to originators handling - * @gw: callbacks related to GW mode */ struct batadv_algo_ops { + /** @list: list node for the batadv_algo_list */ struct hlist_node list; + + /** @name: name of the algorithm */ char *name; + + /** @iface: callbacks related to interface handling */ struct batadv_algo_iface_ops iface; + + /** @neigh: callbacks related to neighbors handling */ struct batadv_algo_neigh_ops neigh; + + /** @orig: callbacks related to originators handling */ struct batadv_algo_orig_ops orig; + + /** @gw: callbacks related to GW mode */ struct batadv_algo_gw_ops gw; }; /** * struct batadv_dat_entry - it is a single entry of batman-adv ARP backend. It * is used to stored ARP entries needed for the global DAT cache - * @ip: the IPv4 corresponding to this DAT/ARP entry - * @mac_addr: the MAC address associated to the stored IPv4 - * @vid: the vlan ID associated to this entry - * @last_update: time in jiffies when this entry was refreshed last time - * @hash_entry: hlist node for batadv_priv_dat::hash - * @refcount: number of contexts the object is used - * @rcu: struct used for freeing in an RCU-safe manner */ struct batadv_dat_entry { + /** @ip: the IPv4 corresponding to this DAT/ARP entry */ __be32 ip; + + /** @mac_addr: the MAC address associated to the stored IPv4 */ u8 mac_addr[ETH_ALEN]; + + /** @vid: the vlan ID associated to this entry */ unsigned short vid; + + /** + * @last_update: time in jiffies when this entry was refreshed last time + */ unsigned long last_update; + + /** @hash_entry: hlist node for &batadv_priv_dat.hash */ struct hlist_node hash_entry; + + /** @refcount: number of contexts the object is used */ struct kref refcount; + + /** @rcu: struct used for freeing in an RCU-safe manner */ struct rcu_head rcu; }; /** * struct batadv_hw_addr - a list entry for a MAC address - * @list: list node for the linking of entries - * @addr: the MAC address of this list entry */ struct batadv_hw_addr { + /** @list: list node for the linking of entries */ struct hlist_node list; + + /** @addr: the MAC address of this list entry */ unsigned char addr[ETH_ALEN]; }; /** * struct batadv_dat_candidate - candidate destination for DAT operations - * @type: the type of the selected candidate. It can one of the following: - * - BATADV_DAT_CANDIDATE_NOT_FOUND - * - BATADV_DAT_CANDIDATE_ORIG - * @orig_node: if type is BATADV_DAT_CANDIDATE_ORIG this field points to the - * corresponding originator node structure */ struct batadv_dat_candidate { + /** + * @type: the type of the selected candidate. It can one of the + * following: + * - BATADV_DAT_CANDIDATE_NOT_FOUND + * - BATADV_DAT_CANDIDATE_ORIG + */ int type; + + /** + * @orig_node: if type is BATADV_DAT_CANDIDATE_ORIG this field points to + * the corresponding originator node structure + */ struct batadv_orig_node *orig_node; }; /** * struct batadv_tvlv_container - container for tvlv appended to OGMs - * @list: hlist node for batadv_priv_tvlv::container_list - * @tvlv_hdr: tvlv header information needed to construct the tvlv - * @refcount: number of contexts the object is used */ struct batadv_tvlv_container { + /** @list: hlist node for &batadv_priv_tvlv.container_list */ struct hlist_node list; + + /** @tvlv_hdr: tvlv header information needed to construct the tvlv */ struct batadv_tvlv_hdr tvlv_hdr; + + /** @refcount: number of contexts the object is used */ struct kref refcount; }; /** * struct batadv_tvlv_handler - handler for specific tvlv type and version - * @list: hlist node for batadv_priv_tvlv::handler_list - * @ogm_handler: handler callback which is given the tvlv payload to process on - * incoming OGM packets - * @unicast_handler: handler callback which is given the tvlv payload to process - * on incoming unicast tvlv packets - * @type: tvlv type this handler feels responsible for - * @version: tvlv version this handler feels responsible for - * @flags: tvlv handler flags - * @refcount: number of contexts the object is used - * @rcu: struct used for freeing in an RCU-safe manner */ struct batadv_tvlv_handler { + /** @list: hlist node for &batadv_priv_tvlv.handler_list */ struct hlist_node list; + + /** + * @ogm_handler: handler callback which is given the tvlv payload to + * process on incoming OGM packets + */ void (*ogm_handler)(struct batadv_priv *bat_priv, struct batadv_orig_node *orig, u8 flags, void *tvlv_value, u16 tvlv_value_len); + + /** + * @unicast_handler: handler callback which is given the tvlv payload to + * process on incoming unicast tvlv packets + */ int (*unicast_handler)(struct batadv_priv *bat_priv, u8 *src, u8 *dst, void *tvlv_value, u16 tvlv_value_len); + + /** @type: tvlv type this handler feels responsible for */ u8 type; + + /** @version: tvlv version this handler feels responsible for */ u8 version; + + /** @flags: tvlv handler flags */ u8 flags; + + /** @refcount: number of contexts the object is used */ struct kref refcount; + + /** @rcu: struct used for freeing in an RCU-safe manner */ struct rcu_head rcu; }; /** * enum batadv_tvlv_handler_flags - tvlv handler flags definitions - * @BATADV_TVLV_HANDLER_OGM_CIFNOTFND: tvlv ogm processing function will call - * this handler even if its type was not found (with no data) - * @BATADV_TVLV_HANDLER_OGM_CALLED: interval tvlv handling flag - the API marks - * a handler as being called, so it won't be called if the - * BATADV_TVLV_HANDLER_OGM_CIFNOTFND flag was set */ enum batadv_tvlv_handler_flags { + /** + * @BATADV_TVLV_HANDLER_OGM_CIFNOTFND: tvlv ogm processing function + * will call this handler even if its type was not found (with no data) + */ BATADV_TVLV_HANDLER_OGM_CIFNOTFND = BIT(1), + + /** + * @BATADV_TVLV_HANDLER_OGM_CALLED: interval tvlv handling flag - the + * API marks a handler as being called, so it won't be called if the + * BATADV_TVLV_HANDLER_OGM_CIFNOTFND flag was set + */ BATADV_TVLV_HANDLER_OGM_CALLED = BIT(2), }; /** * struct batadv_store_mesh_work - Work queue item to detach add/del interface * from sysfs locks - * @net_dev: netdevice to add/remove to/from batman-adv soft-interface - * @soft_iface_name: name of soft-interface to modify - * @work: work queue item */ struct batadv_store_mesh_work { + /** + * @net_dev: netdevice to add/remove to/from batman-adv soft-interface + */ struct net_device *net_dev; + + /** @soft_iface_name: name of soft-interface to modify */ char soft_iface_name[IFNAMSIZ]; + + /** @work: work queue item */ struct work_struct work; }; |