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2016-02-29netfilter: xt_osf: remove unused variableSudip Mukherjee1-2/+0
While building with W=1 we got the warning: net/netfilter/xt_osf.c:265:9: warning: variable 'loop_cont' set but not used The local variable loop_cont was only initialized and then assigned a value but was never used or checked after that. While removing the variable, the case of OSFOPT_TS was not removed so that it will serve as a reminder to us that we can do something in that particular case. Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2015-12-28netfilter: nfnetlink: pass down netns pointer to call() and call_rcu()Pablo Neira Ayuso1-3/+4
Adapt callsites to avoid recurrent lookup of the netns pointer. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2015-09-18netfilter: x_tables: Use par->net instead of computing from the passed net devicesEric W. Biederman1-1/+1
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2014-12-23netfilter: xt_osf: Use continue to reduce indentationJoe Perches1-84/+85
Invert logic in test to use continue. This routine already uses continue, use it a bit more to minimize > 80 column long lines and unnecessary indentation. No change in compiled object file. Other miscellanea: o Remove trailing whitespace o Realign arguments to multiline statement Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2014-04-03netfilter: Add {ipt,ip6t}_osf aliases for xt_osfKirill Tkhai1-0/+2
There are no these aliases, so kernel can not request appropriate match table: $ iptables -I INPUT -p tcp -m osf --genre Windows --ttl 2 -j DROP iptables: No chain/target/match by that name. setsockopt() requests ipt_osf module, which is not present. Add the aliases. Signed-off-by: Kirill Tkhai <ktkhai@parallels.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-12-06netfilter: Fix FSF address in file headersJeff Kirsher1-2/+1
Several files refer to an old address for the Free Software Foundation in the file header comment. Resolve by replacing the address with the URL <http://www.gnu.org/licenses/> so that we do not have to keep updating the header comments anytime the address changes. CC: netfilter@vger.kernel.org CC: Pablo Neira Ayuso <pablo@netfilter.org> CC: Patrick McHardy <kaber@trash.net> CC: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-04-05netfilter: nf_log: prepare net namespace support for loggersGao feng1-2/+4
This patch adds netns support to nf_log and it prepares netns support for existing loggers. It is composed of four major changes. 1) nf_log_register has been split to two functions: nf_log_register and nf_log_set. The new nf_log_register is used to globally register the nf_logger and nf_log_set is used for enabling pernet support from nf_loggers. Per netns is not yet complete after this patch, it comes in separate follow up patches. 2) Add net as a parameter of nf_log_bind_pf. Per netns is not yet complete after this patch, it only allows to bind the nf_logger to the protocol family from init_net and it skips other cases. 3) Adapt all nf_log_packet callers to pass netns as parameter. After this patch, this function only works for init_net. 4) Make the sysctl net/netfilter/nf_log pernet. Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-08-20netfilter: sparse endian fixesPatrick McHardy1-1/+1
Fix a couple of endian annotation in net/netfilter: net/netfilter/nfnetlink_acct.c:82:30: warning: cast to restricted __be64 net/netfilter/nfnetlink_acct.c:86:30: warning: cast to restricted __be64 net/netfilter/nfnetlink_cthelper.c:77:28: warning: cast to restricted __be16 net/netfilter/xt_NFQUEUE.c:46:16: warning: restricted __be32 degrades to integer net/netfilter/xt_NFQUEUE.c:60:34: warning: restricted __be32 degrades to integer net/netfilter/xt_NFQUEUE.c:68:34: warning: restricted __be32 degrades to integer net/netfilter/xt_osf.c:272:55: warning: cast to restricted __be16 Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2011-05-07net,rcu: convert call_rcu(xt_osf_finger_free_rcu) to kfree_rcu()Lai Jiangshan1-9/+2
The rcu callback xt_osf_finger_free_rcu() just calls a kfree(), so we use kfree_rcu() instead of the call_rcu(xt_osf_finger_free_rcu). Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2010-05-11netfilter: xtables: deconstify struct xt_action_param for matchesJan Engelhardt1-1/+1
In future, layer-3 matches will be an xt module of their own, and need to set the fragoff and thoff fields. Adding more pointers would needlessy increase memory requirements (esp. so for 64-bit, where pointers are wider). Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-05-11netfilter: xtables: substitute temporary defines by final nameJan Engelhardt1-2/+2
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-03-18netfilter: xt extensions: use pr_<level>Jan Engelhardt1-4/+4
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-01-11netfilter: xt_osf: change %pi4 to %pI4Joe Perches1-2/+2
commit 8a27f7c90ffcb791eed7574922b51fb60b08fc89 changed the output style of %pi4 to use fixed width leading zero IP addresses "001.002.003.004". It's useful when printing multiple lines of addresses, but was a change in output style for some existing uses. Using %pI4 restores the previous output style. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-11-19netfilter: xt_osf: fix xt_osf_remove_callback() return valuePatrick McHardy1-1/+1
Return a negative error value. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-25netfilter: nfnetlink: constify message attributes and headersPatrick McHardy1-2/+4
Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-07-16netfilter: xt_osf: fix nf_log_packet() argumentsPatrick McHardy1-2/+3
The first argument is the address family, the second one the hook number. Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-06-08netfilter: passive OS fingerprint xtables matchEvgeniy Polyakov1-0/+428
Passive OS fingerprinting netfilter module allows to passively detect remote OS and perform various netfilter actions based on that knowledge. This module compares some data (WS, MSS, options and it's order, ttl, df and others) from packets with SYN bit set with dynamically loaded OS fingerprints. Fingerprint matching rules can be downloaded from OpenBSD source tree or found in archive and loaded via netfilter netlink subsystem into the kernel via special util found in archive. Archive contains library file (also attached), which was shipped with iptables extensions some time ago (at least when ipt_osf existed in patch-o-matic). Following changes were made in this release: * added NLM_F_CREATE/NLM_F_EXCL checks * dropped _rcu list traversing helpers in the protected add/remove calls * dropped unneded structures, debug prints, obscure comment and check Fingerprints can be downloaded from http://www.openbsd.org/cgi-bin/cvsweb/src/etc/pf.os or can be found in archive Example usage: -d switch removes fingerprints Please consider for inclusion. Thank you. Passive OS fingerprint homepage (archives, examples): http://www.ioremap.net/projects/osf Signed-off-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Patrick McHardy <kaber@trash.net>
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