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authorJakub Kicinski <kuba@kernel.org>2023-08-24 19:46:29 +0200
committerJakub Kicinski <kuba@kernel.org>2023-08-24 19:51:39 +0200
commit57ce6427e00a6a72f74b29630b39548b36980b09 (patch)
tree4f09d27db19c7c6688764dee7fd1955a37ed4774 /net/batman-adv
parentMerge tag 'mlx5-updates-2023-08-22' of git://git.kernel.org/pub/scm/linux/ker... (diff)
parentMerge tag 'net-6.5-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netd... (diff)
downloadlinux-57ce6427e00a6a72f74b29630b39548b36980b09.tar.xz
linux-57ce6427e00a6a72f74b29630b39548b36980b09.zip
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. Conflicts: include/net/inet_sock.h f866fbc842de ("ipv4: fix data-races around inet->inet_id") c274af224269 ("inet: introduce inet->inet_flags") https://lore.kernel.org/all/679ddff6-db6e-4ff6-b177-574e90d0103d@tessares.net/ Adjacent changes: drivers/net/bonding/bond_alb.c e74216b8def3 ("bonding: fix macvlan over alb bond support") f11e5bd159b0 ("bonding: support balance-alb with openvswitch") drivers/net/ethernet/broadcom/bgmac.c d6499f0b7c7c ("net: bgmac: Return PTR_ERR() for fixed_phy_register()") 23a14488ea58 ("net: bgmac: Fix return value check for fixed_phy_register()") drivers/net/ethernet/broadcom/genet/bcmmii.c 32bbe64a1386 ("net: bcmgenet: Fix return value check for fixed_phy_register()") acf50d1adbf4 ("net: bcmgenet: Return PTR_ERR() for fixed_phy_register()") net/sctp/socket.c f866fbc842de ("ipv4: fix data-races around inet->inet_id") b09bde5c3554 ("inet: move inet->mc_loop to inet->inet_frags") Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/batman-adv')
-rw-r--r--net/batman-adv/bat_v_elp.c3
-rw-r--r--net/batman-adv/bat_v_ogm.c7
-rw-r--r--net/batman-adv/hard-interface.c14
-rw-r--r--net/batman-adv/netlink.c3
-rw-r--r--net/batman-adv/soft-interface.c3
-rw-r--r--net/batman-adv/translation-table.c1
-rw-r--r--net/batman-adv/types.h6
7 files changed, 32 insertions, 5 deletions
diff --git a/net/batman-adv/bat_v_elp.c b/net/batman-adv/bat_v_elp.c
index acff565849ae..1d704574e6bf 100644
--- a/net/batman-adv/bat_v_elp.c
+++ b/net/batman-adv/bat_v_elp.c
@@ -505,7 +505,7 @@ int batadv_v_elp_packet_recv(struct sk_buff *skb,
struct batadv_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
struct batadv_elp_packet *elp_packet;
struct batadv_hard_iface *primary_if;
- struct ethhdr *ethhdr = (struct ethhdr *)skb_mac_header(skb);
+ struct ethhdr *ethhdr;
bool res;
int ret = NET_RX_DROP;
@@ -513,6 +513,7 @@ int batadv_v_elp_packet_recv(struct sk_buff *skb,
if (!res)
goto free_skb;
+ ethhdr = eth_hdr(skb);
if (batadv_is_my_mac(bat_priv, ethhdr->h_source))
goto free_skb;
diff --git a/net/batman-adv/bat_v_ogm.c b/net/batman-adv/bat_v_ogm.c
index e710e9afe78f..e503ee0d896b 100644
--- a/net/batman-adv/bat_v_ogm.c
+++ b/net/batman-adv/bat_v_ogm.c
@@ -123,8 +123,10 @@ static void batadv_v_ogm_send_to_if(struct sk_buff *skb,
{
struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
- if (hard_iface->if_status != BATADV_IF_ACTIVE)
+ if (hard_iface->if_status != BATADV_IF_ACTIVE) {
+ kfree_skb(skb);
return;
+ }
batadv_inc_counter(bat_priv, BATADV_CNT_MGMT_TX);
batadv_add_counter(bat_priv, BATADV_CNT_MGMT_TX_BYTES,
@@ -985,7 +987,7 @@ int batadv_v_ogm_packet_recv(struct sk_buff *skb,
{
struct batadv_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
struct batadv_ogm2_packet *ogm_packet;
- struct ethhdr *ethhdr = eth_hdr(skb);
+ struct ethhdr *ethhdr;
int ogm_offset;
u8 *packet_pos;
int ret = NET_RX_DROP;
@@ -999,6 +1001,7 @@ int batadv_v_ogm_packet_recv(struct sk_buff *skb,
if (!batadv_check_management_packet(skb, if_incoming, BATADV_OGM2_HLEN))
goto free_skb;
+ ethhdr = eth_hdr(skb);
if (batadv_is_my_mac(bat_priv, ethhdr->h_source))
goto free_skb;
diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c
index 5a4ff9a81e74..96a412beab2d 100644
--- a/net/batman-adv/hard-interface.c
+++ b/net/batman-adv/hard-interface.c
@@ -631,7 +631,19 @@ out:
*/
void batadv_update_min_mtu(struct net_device *soft_iface)
{
- soft_iface->mtu = batadv_hardif_min_mtu(soft_iface);
+ struct batadv_priv *bat_priv = netdev_priv(soft_iface);
+ int limit_mtu;
+ int mtu;
+
+ mtu = batadv_hardif_min_mtu(soft_iface);
+
+ if (bat_priv->mtu_set_by_user)
+ limit_mtu = bat_priv->mtu_set_by_user;
+ else
+ limit_mtu = ETH_DATA_LEN;
+
+ mtu = min(mtu, limit_mtu);
+ dev_set_mtu(soft_iface, mtu);
/* Check if the local translate table should be cleaned up to match a
* new (and smaller) MTU.
diff --git a/net/batman-adv/netlink.c b/net/batman-adv/netlink.c
index d37872b34281..0c64d81a7761 100644
--- a/net/batman-adv/netlink.c
+++ b/net/batman-adv/netlink.c
@@ -495,7 +495,10 @@ static int batadv_netlink_set_mesh(struct sk_buff *skb, struct genl_info *info)
attr = info->attrs[BATADV_ATTR_FRAGMENTATION_ENABLED];
atomic_set(&bat_priv->fragmentation, !!nla_get_u8(attr));
+
+ rtnl_lock();
batadv_update_min_mtu(bat_priv->soft_iface);
+ rtnl_unlock();
}
if (info->attrs[BATADV_ATTR_GW_BANDWIDTH_DOWN]) {
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index f7947fad06f2..1bf1232a4f75 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -153,11 +153,14 @@ static int batadv_interface_set_mac_addr(struct net_device *dev, void *p)
static int batadv_interface_change_mtu(struct net_device *dev, int new_mtu)
{
+ struct batadv_priv *bat_priv = netdev_priv(dev);
+
/* check ranges */
if (new_mtu < ETH_MIN_MTU || new_mtu > batadv_hardif_min_mtu(dev))
return -EINVAL;
dev->mtu = new_mtu;
+ bat_priv->mtu_set_by_user = new_mtu;
return 0;
}
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index 36ca31252a73..b95c36765d04 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -774,7 +774,6 @@ check_roaming:
if (roamed_back) {
batadv_tt_global_free(bat_priv, tt_global,
"Roaming canceled");
- tt_global = NULL;
} else {
/* The global entry has to be marked as ROAMING and
* has to be kept for consistency purpose
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index 54c2b8fa48cc..17d5ea1d8e84 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -1547,6 +1547,12 @@ struct batadv_priv {
struct net_device *soft_iface;
/**
+ * @mtu_set_by_user: MTU was set once by user
+ * protected by rtnl_lock
+ */
+ int mtu_set_by_user;
+
+ /**
* @bat_counters: mesh internal traffic statistic counters (see
* batadv_counters)
*/