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* netfilter: nf_log regression fixEric Dumazet2009-04-151-0/+4
| | | | | | | | | | | | | commit ca735b3aaa945626ba65a3e51145bfe4ecd9e222 'netfilter: use a linked list of loggers' introduced an array of list_head in "struct nf_logger", but forgot to initialize it in nf_log_register(). This resulted in oops when calling nf_log_unregister() at module unload time. Reported-and-tested-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl> Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Acked-by: Eric Leblond <eric@inl.fr> Signed-off-by: Patrick McHardy <kaber@trash.net>
* netfilter: sysctl support of logger choiceEric Leblond2009-03-231-1/+84
| | | | | | | | | | | | | | This patchs adds support of modification of the used logger via sysctl. It can be used to change the logger to module that can not use the bind operation (ipt_LOG and ipt_ULOG). For this purpose, it creates a directory /proc/sys/net/netfilter/nf_log which contains a file per-protocol. The content of the file is the name current logger (NONE if not set) and a logger can be setup by simply echoing its name to the file. By echoing "NONE" to a /proc/sys/net/netfilter/nf_log/PROTO file, the logger corresponding to this PROTO is set to NULL. Signed-off-by: Eric Leblond <eric@inl.fr> Signed-off-by: Patrick McHardy <kaber@trash.net>
* netfilter: print the list of register loggersEric Leblond2009-03-161-2/+26
| | | | | | | | | | | | | This patch modifies the proc output to add display of registered loggers. The content of /proc/net/netfilter/nf_log is modified. Instead of displaying a protocol per line with format: proto:logger it now displays: proto:logger (comma_separated_list_of_loggers) NONE is used as keyword if no logger is used. Signed-off-by: Eric Leblond <eric@inl.fr> Signed-off-by: Patrick McHardy <kaber@trash.net>
* netfilter: use a linked list of loggersEric Leblond2009-03-161-30/+60
| | | | | | | | | | | | | | | | | | This patch modifies nf_log to use a linked list of loggers for each protocol. This list of loggers is read and write protected with a mutex. This patch separates registration and binding. To be used as logging module, a module has to register calling nf_log_register() and to bind to a protocol it has to call nf_log_bind_pf(). This patch also converts the logging modules to the new API. For nfnetlink_log, it simply switchs call to register functions to call to bind function and adds a call to nf_log_register() during init. For other modules, it just remove a const flag from the logger structure and replace it with a __read_mostly. Signed-off-by: Eric Leblond <eric@inl.fr> Signed-off-by: Patrick McHardy <kaber@trash.net>
* netfilter: Introduce NFPROTO_* constantsJan Engelhardt2008-10-081-6/+6
| | | | | | | | | | | The netfilter subsystem only supports a handful of protocols (much less than PF_*) and even non-PF protocols like ARP and pseudo-protocols like PF_BRIDGE. By creating NFPROTO_*, we can earn a few memory savings on arrays that previously were always PF_MAX-sized and keep the pseudo-protocols to ourselves. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
* netfilter: Use unsigned types for hooknum and pf varsJan Engelhardt2008-10-081-3/+3
| | | | | | | and (try to) consistently use u_int8_t for the L3 family. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
* netfilter: Make nflog quiet when no one listen in userspace.Eric Leblond2008-06-111-4/+0
| | | | | | | | | | | | | The message "nf_log_packet: can't log since no backend logging module loaded in! Please either load one, or disable logging explicitly" was displayed for each logged packet when no userspace application is listening to nflog events. The message seems to warn for a problem with a kernel module missing but as said before this is not the case. I thus propose to suppress the message (I don't see any reason to flood the log because a user application has crashed.) Signed-off-by: Eric Leblond <eric@inl.fr> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: Replate direct proc_fops assignment with proc_create call.Denis V. Lunev2008-03-271-6/+2
| | | | | | | | This elliminates infamous race during module loading when one could lookup proc entry without proc_fops assigned. Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: Supress some sparse warningsEric Dumazet2008-01-311-0/+2
| | | | | | | | | | | | | | | | | | CHECK net/netfilter/nf_conntrack_expect.c net/netfilter/nf_conntrack_expect.c:429:13: warning: context imbalance in 'exp_seq_start' - wrong count at exit net/netfilter/nf_conntrack_expect.c:441:13: warning: context imbalance in 'exp_seq_stop' - unexpected unlock CHECK net/netfilter/nf_log.c net/netfilter/nf_log.c:105:13: warning: context imbalance in 'seq_start' - wrong count at exit net/netfilter/nf_log.c:125:13: warning: context imbalance in 'seq_stop' - unexpected unlock CHECK net/netfilter/nfnetlink_queue.c net/netfilter/nfnetlink_queue.c:363:7: warning: symbol 'size' shadows an earlier one net/netfilter/nfnetlink_queue.c:217:9: originally declared here net/netfilter/nfnetlink_queue.c:847:13: warning: context imbalance in 'seq_start' - wrong count at exit net/netfilter/nfnetlink_queue.c:859:13: warning: context imbalance in 'seq_stop' - unexpected unlock Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: nf_log: remove incomprehensible commentPatrick McHardy2008-01-281-1/+0
| | | | | | | | Whatever that comment tries to say, I don't get it and it looks like a leftover from the time when RCU wasn't used properly. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: nf_log: constify struct nf_logger and nf_log_packet loginfo argPatrick McHardy2008-01-281-5/+5
| | | | | Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: nf_log: move logging stuff to seperate headerPatrick McHardy2008-01-281-0/+1
| | | | | Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET] NETFILTER: Fix whitespace errors.YOSHIFUJI Hideaki2007-07-191-1/+1
| | | | Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
* [NET]: Make all initialized struct seq_operations const.Philippe De Muyter2007-07-101-1/+1
| | | | | | | Make all initialized struct seq_operations in net/ const Signed-off-by: Philippe De Muyter <phdm@macqel.be> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: Fix whitespace errorsYOSHIFUJI Hideaki2007-02-121-3/+3
| | | | | | Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: nf_log: minor cleanupsPatrick McHardy2007-02-121-11/+11
| | | | | | | | | | - rename nf_logging to nf_loggers since its an array of registered loggers - rename nf_log_unregister_logger() to nf_log_unregister() to make it symetrical to nf_log_register() and convert all users Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: nf_log: switch logger registration/unregistration to mutexPatrick McHardy2007-02-121-11/+15
| | | | | | | | The spinlock is only used in process context (register/unregister), switch to a mutex. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: nf_log: make nf_log_unregister_pf return voidPatrick McHardy2007-02-121-5/+2
| | | | | | | | | Since the only user of nf_log_unregister_pf (nfnetlink_log) doesn't check the return value, change it to void and bail out silently when a non-existant address family is supplied. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: nf_log: use rcu_assign_pointer for RCU protected pointerPatrick McHardy2007-02-121-4/+4
| | | | | | | | Also replace synchronize_net() calls by synchronize_rcu() since the RCU protected data is also used for sysfs. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] mark struct file_operations const 8Arjan van de Ven2007-02-121-1/+1
| | | | | | | | | | | Many struct file_operations in the kernel can be "const". Marking them const moves these to the .rodata section, which avoids false sharing with potential dirty data. In addition it'll catch accidental writes at compile time to these shared resources. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Remove obsolete #include <linux/config.h>Jörn Engel2006-06-301-1/+0
| | | | | Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* [NETFILTER]: Fix compilation when no PROC_FS enabledHarald Welte2005-08-291-2/+2
| | | | | Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: check nf_log function call argumentsHarald Welte2005-08-291-1/+9
| | | | | | | Check whether pf is too large in order to prevent array overflow. Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: more verbose return codes from nf_{log,queue}Harald Welte2005-08-291-1/+5
| | | | | | | | | | | This adds EEXIST to distinguish between the following return values: 0: nobody was registered, registration successful EEXIST: the exact same handler was already registered, no registration required EBUSY: somebody else is registered, registration unsuccessful. Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: add /proc/net/netfilter interface to nf_queueHarald Welte2005-08-291-0/+1
| | | | | | | | | | | This patch adds a /proc/net/netfilter/nf_queue file, similar to the recently-added /proc/net/netfilter/nf_log. It indicates which queue handler is registered to which protocol family. This is useful since there are now multiple queue handlers in the treee (ip[6]_queue, nfnetlink_queue). Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETFILTER]: split net/core/netfilter.c into net/netfilter/*.cHarald Welte2005-08-291-0/+165
This patch doesn't introduce any code changes, but merely splits the core netfilter code into four separate files. It also moves it from it's old location in net/core/ to the recently-created net/netfilter/ directory. Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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