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* netfilter: use IS_ENABLED(CONFIG_BRIDGE_NETFILTER)Pablo Neira Ayuso2014-10-021-1/+1
| | | | | | | | | | In 34666d4 ("netfilter: bridge: move br_netfilter out of the core"), the bridge netfilter code has been modularized. Use IS_ENABLED instead of ifdef to cover the module case. Fixes: 34666d4 ("netfilter: bridge: move br_netfilter out of the core") Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* netfilter: push reasm skb through instead of original frag skbsJiri Pirko2013-11-111-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pushing original fragments through causes several problems. For example for matching, frags may not be matched correctly. Take following example: <example> On HOSTA do: ip6tables -I INPUT -p icmpv6 -j DROP ip6tables -I INPUT -p icmpv6 -m icmp6 --icmpv6-type 128 -j ACCEPT and on HOSTB you do: ping6 HOSTA -s2000 (MTU is 1500) Incoming echo requests will be filtered out on HOSTA. This issue does not occur with smaller packets than MTU (where fragmentation does not happen) </example> As was discussed previously, the only correct solution seems to be to use reassembled skb instead of separete frags. Doing this has positive side effects in reducing sk_buff by one pointer (nfct_reasm) and also the reams dances in ipvs and conntrack can be removed. Future plan is to remove net/ipv6/netfilter/nf_conntrack_reasm.c entirely and use code in net/ipv6/reassembly.c instead. Signed-off-by: Jiri Pirko <jiri@resnulli.us> Acked-by: Julian Anastasov <ja@ssi.bg> Signed-off-by: Marcelo Ricardo Leitner <mleitner@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* netfilter: pass hook ops to hookfnPatrick McHardy2013-10-141-3/+3
| | | | | | | | Pass the hook ops to the hookfn to allow for generic hook functions. This change is required by nf_tables. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* ipv6: use IS_ENABLED()Amerigo Wang2012-11-011-3/+3
| | | | | | | | | | | | #if defined(CONFIG_FOO) || defined(CONFIG_FOO_MODULE) can be replaced by #if IS_ENABLED(CONFIG_FOO) Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Cong Wang <amwang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Fix common misspellingsLucas De Marchi2011-03-311-1/+1
| | | | | | Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
* netfilter: fix compilation when conntrack is disabled but tproxy is enabledKOVACS Krisztian2011-01-121-1/+7
| | | | | | | | | | | | | | | | | The IPv6 tproxy patches split IPv6 defragmentation off of conntrack, but failed to update the #ifdef stanzas guarding the defragmentation related fields and code in skbuff and conntrack related code in nf_defrag_ipv6.c. This patch adds the required #ifdefs so that IPv6 tproxy can truly be used without connection tracking. Original report: http://marc.info/?l=linux-netdev&m=129010118516341&w=2 Reported-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: KOVACS Krisztian <hidden@balabit.hu> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* tproxy: split off ipv6 defragmentation to a separate moduleBalazs Scheidler2010-10-211-0/+131
Like with IPv4, TProxy needs IPv6 defragmentation but does not require connection tracking. Since defragmentation was coupled with conntrack, I split off the two, creating an nf_defrag_ipv6 module, similar to the already existing nf_defrag_ipv4. Signed-off-by: Balazs Scheidler <bazsi@balabit.hu> Signed-off-by: KOVACS Krisztian <hidden@balabit.hu> Signed-off-by: Patrick McHardy <kaber@trash.net>