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* [LLC]: multicast receive device matchStephen Hemminger2006-08-141-0/+3
| | | | | | | | | | | | Fix from Aji_Srinivas@emc.com, STP packets are incorrectly received on all LLC datagram sockets, whichever interface they are bound to. The llc_sap datagram receive logic sends packets with a unicast destination MAC to one socket bound to that SAP and MAC, and multicast packets to all sockets bound to that SAP. STP packets are multicast, and we do need to know on which interface they were received. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [LLX]: SOCK_DGRAM interface fixesStephen Hemminger2006-08-052-14/+10
| | | | | | | | | | | | | | | | | | | | | | | | The datagram interface of LLC is broken in a couple of ways. These were discovered when trying to use it to build an out-of-kernel version of STP. First it didn't pass the source address of the received packet in recvfrom(). It needs to copy the source address of received LLC packets into the socket control block. At the same time fix a security issue because there was uninitialized data leakage. Every recvfrom call was just copying out old data. Second, LLC should not merge multiple packets in one receive call on datagram sockets. LLC should preserve packet boundaries on SOCK_DGRAM. This fix goes against the old historical comments about UNIX98 semantics but without this fix SOCK_DGRAM is broken and useless. So either ANK's interpretation was incorect or UNIX98 standard was wrong. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Acked-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Conversions from kmalloc+memset to k(z|c)alloc.Panagiotis Issaris2006-07-211-2/+1
| | | | | | Signed-off-by: Panagiotis Issaris <takis@issaris.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* Remove obsolete #include <linux/config.h>Jörn Engel2006-06-305-5/+0
| | | | | Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* [LLC]: Fix double receive of SKB.Andrew Morton2006-06-181-1/+0
| | | | | | | Oops fix from Stephen: remove duplicate rcv() calls. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [LLC]: add multicast support for datagramsStephen Hemminger2006-06-181-8/+51
| | | | | | | | Allow mulitcast reception of datagrams (similar to UDP). All sockets bound to the same SAP receive a clone. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [LLC]: allow applications to get copy of kernel datagramsStephen Hemminger2006-06-181-1/+3
| | | | | | | | | | | It is legal for an application to bind to a SAP that is also being used by the kernel. This happens if the bridge module binds to the STP SAP, and the user wants to have a daemon for STP as well. It is possible to have kernel doing STP on one bridge, but let application do RSTP on another bridge. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [LLC]: use rcu_dereference on receive handlerStephen Hemminger2006-06-181-2/+5
| | | | | | | | The receive hander pointer might be modified during network changes of protocol. So use rcu_dereference (only matters on alpha). Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [LLC]: allow datagram recvmsgStephen Hemminger2006-06-181-2/+2
| | | | | | | | | | LLC receive is broken for SOCK_DGRAM. If an application does recv() on a datagram socket and there is no data present, don't return "not connected". Instead, just do normal datagram semantics. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [LLC]: use more efficient ether address routinesStephen Hemminger2006-06-181-2/+0
| | | | | | | Use more cache efficient Ethernet address manipulation functions in etherdevice.h. Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
* [I/OAT]: Make sk_eat_skb I/OAT aware.Chris Leech2006-06-181-1/+1
| | | | | | | | Add an extra argument to sk_eat_skb, and make it move early copied packets to the async_wait_queue instead of freeing them. Signed-off-by: Chris Leech <christopher.leech@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [LLC]: Use pskb_trim_rcsum() in llc_fixup_skb().David S. Miller2006-04-201-1/+2
| | | | | | | | | | | | Kernel Bugzilla #6409 If we use plain skb_trim(), that's wrong, because if the SKB is cloned, and it can be because we unshared it in the caller, we have to allow reallocation. The pskb_trim*() family of routines is therefore the most appropriate here. Signed-off-by: David S. Miller <davem@davemloft.net>
* [LLC]: llc_mac_hdr_init const argumentsStephen Hemminger2006-03-214-23/+3
| | | | | | | | | Cleanup of LLC. llc_mac_hdr_init can take constant arguments, and it is defined twice once in llc_output.h that is otherwise unused. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Acked-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [LLC]: Fix sap refcountingArnaldo Carvalho de Melo2006-03-212-2/+3
| | | | | | | | Thanks to Leslie Harlley Watter <leslie@watter.org> for reporting the problem an testing this patch. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [LLC]: Replace __inline__ with inlineArnaldo Carvalho de Melo2006-03-211-5/+4
| | | | | Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [LLC]: Fix struct proto .nameArnaldo Carvalho de Melo2006-03-211-1/+1
| | | | | | | Cut'n'paste error from ddp_proto. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Add a dev_ioctl() fallback to sock_ioctl()Christoph Hellwig2006-01-031-1/+1
| | | | | | | | | | | Currently all network protocols need to call dev_ioctl as the default fallback in their ioctl implementations. This patch adds a fallback to dev_ioctl to sock_ioctl if the protocol returned -ENOIOCTLCMD. This way all the procotol ioctl handlers can be simplified and we don't need to export dev_ioctl. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: move struct proto_ops to constEric Dumazet2006-01-031-2/+2
| | | | | | | | | | | | | | | | | | | | | | I noticed that some of 'struct proto_ops' used in the kernel may share a cache line used by locks or other heavily modified data. (default linker alignement is 32 bytes, and L1_CACHE_LINE is 64 or 128 at least) This patch makes sure a 'struct proto_ops' can be declared as const, so that all cpus can share all parts of it without false sharing. This is not mandatory : a driver can still use a read/write structure if it needs to (and eventually a __read_mostly) I made a global stubstitute to change all existing occurences to make them const. This should reduce the possibility of false sharing on SMP, and speedup some socket system calls. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Avoid atomic xchg() for non-error caseBenjamin LaHaise2006-01-031-3/+2
| | | | | | | | | | | It also looks like there were 2 places where the test on sk_err was missing from the event wait logic (in sk_stream_wait_connect and sk_stream_wait_memory), while the rest of the sock_error() users look to be doing the right thing. This version of the patch fixes those, and cleans up a few places that were testing ->sk_err directly. Signed-off-by: Benjamin LaHaise <benjamin.c.lahaise@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [LLC]: Fix compiler warnings introduced by TX window scaling changes.David S. Miller2005-11-181-4/+4
| | | | | | | | | | | | | | | | | Noticed by Olaf Hering. The comparisons want a u8 here (the data type on the left-hand branch is a u8 structure member, and the constant on the right-hand branch is "~((u8) 128)"), but C turns it into an integer so we get: net/llc/llc_c_ac.c: In function `llc_conn_ac_inc_npta_value': net/llc/llc_c_ac.c:998: warning: comparison is always true due to limited range of data type net/llc/llc_c_ac.c:999: warning: large integer implicitly truncated to unsigned type Fix this up by explicitly recasting the right-hand branch constant into a "u8" once more. Signed-off-by: David S. Miller <davem@davemloft.net>
* [LLC]: Make core block on remote busy.Jochen Friedrich2005-11-151-1/+4
| | | | | | Signed-off-by: Jochen Friedrich <jochen@scram.de> Acked-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [LLC]: Fix TX window scalingJochen Friedrich2005-11-151-9/+11
| | | | | | Signed-off-by: Jochen Friedrich <jochen@scram.de> Acked-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] gfp flags annotations - part 1Al Viro2005-10-091-2/+1
| | | | | | | | | | | | - added typedef unsigned int __nocast gfp_t; - replaced __nocast uses for gfp flags with gfp_t - it gives exactly the same warnings as far as sparse is concerned, doesn't change generated code (from gcc point of view we replaced unsigned int with typedef) and documents what's going on far better. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [LLC]: fix llc_ui_recvmsg, making it behave like tcp_recvmsgArnaldo Carvalho de Melo2005-09-224-36/+153
| | | | | | In fact it is an exact copy of the parts that makes sense to LLC :-) Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [LLC]: Fix the accept pathArnaldo Carvalho de Melo2005-09-226-92/+130
| | | | | | | | | | Borrowing the structure of TCP/IP for this. On the receive of new connections I was bh_lock_socking the _new_ sock, not the listening one, duh, now it survives the ssh connections storm I've been using to test this specific bug. Also fixes send side skb sock accounting. Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [LLC]: Fix sparse warningsArnaldo Carvalho de Melo2005-09-225-13/+6
| | | | Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [LLC]: Fix llc_fixup_skb() bugJochen Friedrich2005-09-221-2/+6
| | | | | | | | llc_fixup_skb() had a bug dropping 3 bytes packets (like UA frames). Token ring doesn't pad these frames. Signed-off-by: Jochen Friedrich <jochen@scram.de> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [LLC]: Fix for Bugzilla ticket #5157Jochen Friedrich2005-09-221-2/+2
| | | | | Signed-off-by: Jochen Friedrich <jochen@scram.de> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [LLC]: Fix for Bugzilla ticket #5156Jochen Friedrich2005-09-221-0/+6
| | | | | Signed-off-by: Jochen Friedrich <jochen@scram.de> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [LLC]: Use refcounting with struct llc_sapArnaldo Carvalho de Melo2005-09-225-44/+39
| | | | | Signed-off-by: Jochen Friedrich <jochen@scram.de> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [LLC]: Do better struct sock accounting on skbsArnaldo Carvalho de Melo2005-09-224-12/+14
| | | | | Signed-off-by: Jochen Friedrich <jochen@scram.de> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [LLC]: Use sk_wait_dataArnaldo Carvalho de Melo2005-09-221-19/+23
| | | | | Signed-off-by: Jochen Friedrich <jochen@scram.de> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [LLC]: Use some more likely/unlikelyArnaldo Carvalho de Melo2005-09-226-47/+42
| | | | | Signed-off-by: Jochen Friedrich <jochen@scram.de> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [LLC]: Add sysctl support for the LLC timeoutsArnaldo Carvalho de Melo2005-09-226-25/+195
| | | | | Signed-off-by: Jochen Friedrich <jochen@scram.de> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [LLC]: Use the sk_wait_event primitiveArnaldo Carvalho de Melo2005-09-221-38/+27
| | | | | Signed-off-by: Jochen Friedrich <jochen@scram.de> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [LLC]: Convert llc_ui_wait_for_ functions to use prepare_to_wait/finish_waitArnaldo Carvalho de Melo2005-09-221-80/+67
| | | | | | | And make it look more like the similar routines in the TCP/IP source code. Signed-off-by: Jochen Friedrich <jochen@scram.de> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [LLC]: Remove unused functions from llc_c_ev.cArnaldo Carvalho de Melo2005-09-221-24/+1
| | | | | Signed-off-by: Jochen Friedrich <jochen@scram.de> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [LLC]: Use const in llc_c_ev.cArnaldo Carvalho de Melo2005-09-221-66/+68
| | | | | Signed-off-by: Jochen Friedrich <jochen@scram.de> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [LLC]: Help the compiler with likely/unlikely, saving some more bytesArnaldo Carvalho de Melo2005-09-223-25/+26
| | | | | Signed-off-by: Jochen Friedrich <jochen@scram.de> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [LLC]: Mark llc_find_next_offset as __init, saving some more bytesArnaldo Carvalho de Melo2005-09-221-4/+4
| | | | | Signed-off-by: Jochen Friedrich <jochen@scram.de> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [LLC]: Update comments for llc_ui_bind and llc_ui_autobind to match new ↵Arnaldo Carvalho de Melo2005-09-221-18/+7
| | | | | | | behaviour Signed-off-by: Jochen Friedrich <jochen@scram.de> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [LLC]: Remove unneeded temp net_device variablesArnaldo Carvalho de Melo2005-09-221-9/+5
| | | | | Signed-off-by: Jochen Friedrich <jochen@scram.de> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [LLC]: introduce llc_conn_tmr_common_cb, to avoid code duplicationArnaldo Carvalho de Melo2005-09-221-38/+10
| | | | | Signed-off-by: Jochen Friedrich <jochen@scram.de> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [LLC]: Remove unneeded f_bit variablesArnaldo Carvalho de Melo2005-09-221-14/+7
| | | | | Signed-off-by: Jochen Friedrich <jochen@scram.de> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [LLC]: Simplify llc_c_ac code, removing unneeded assignments to variablesArnaldo Carvalho de Melo2005-09-221-8/+2
| | | | | Signed-off-by: Jochen Friedrich <jochen@scram.de> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [LLC]: Make llc_frame_alloc take a net_device as an argumentArnaldo Carvalho de Melo2005-09-224-74/+50
| | | | | | | | | | | | | | So as to set the newly created sk_buff ->dev member with it, that way we stop using dev_base->next, that is the wrong thing to do, as there may well be several interfaces being used with LLC. This was not such a big problem after all as most of the users of llc_alloc_frame were setting the correct dev, but this way code is reduced. This also fixes another bug in llc_station_ac_send_null_dsap_xid_c, that was not setting the skb->dev field. Signed-off-by: Jochen Friedrich <jochen@scram.de> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
* [TCP]: Move the tcp sock states to net/tcp_states.hArnaldo Carvalho de Melo2005-08-304-4/+4
| | | | | | | | | | | Lots of places just needs the states, not even linux/tcp.h, where this enum was, needs it. This speeds up development of the refactorings as less sources are rebuilt when things get moved from net/tcp.h. Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Kill skb->real_devDavid S. Miller2005-08-302-3/+4
| | | | | | | | | | | Bonding just wants the device before the skb_bond() decapsulation occurs, so simply pass that original device into packet_type->func() as an argument. It remains to be seen whether we can use this same exact thing to get rid of skb->input_dev as well. Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Kill skb->listDavid S. Miller2005-08-302-2/+6
| | | | | | | | | | | | | | Remove the "list" member of struct sk_buff, as it is entirely redundant. All SKB list removal callers know which list the SKB is on, so storing this in sk_buff does nothing other than taking up some space. Two tricky bits were SCTP, which I took care of, and two ATM drivers which Francois Romieu <romieu@fr.zoreil.com> fixed up. Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
* [NET]: Transform skb_queue_len() binary tests into skb_queue_empty()David S. Miller2005-07-081-1/+1
| | | | | | | | | | | | | This is part of the grand scheme to eliminate the qlen member of skb_queue_head, and subsequently remove the 'list' member of sk_buff. Most users of skb_queue_len() want to know if the queue is empty or not, and that's trivially done with skb_queue_empty() which doesn't use the skb_queue_head->qlen member and instead uses the queue list emptyness as the test. Signed-off-by: David S. Miller <davem@davemloft.net>
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