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Hosts the 0x221E linux distro kernel.

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), ctnetlink_conntrack_event(). - ctnl_timeout_find_get(), nfqnl_nf_hook_drop(). Third, functions that are mixed with type1 and type2. These functions are called by nf_hook() also these are called by ordinary functions that already held the rcu_read_lock(): - __ctnetlink_glue_build(), ctnetlink_expect_event(). - ctnetlink_proto_size(). Applied files are below: - nf_conntrack_broadcast.c, nf_conntrack_core.c, nf_conntrack_netlink.c. - nf_conntrack_pptp.c, nf_conntrack_sip.c, nfnetlink_cttimeout.c. - nfnetlink_queue.c, xt_TCPMSS.c, xt_TPROXY.c, xt_addrtype.c. - xt_connlimit.c, xt_hashlimit.c, xt_osf.c Detailed calltrace can be found at: http://marc.info/?l=netfilter-devel&m=149667610710350&w=2 Signed-off-by: Taehee Yoo <ap420073@gmail.com> Acked-by: Julian Anastasov <ja@ssi.bg> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> 2017-04-26netfilter: pptp: attach nat extension when neededFlorian Westphal make sure nat extension gets added if the master conntrack is subject to NAT. This will be required once the nat core stops adding it by default. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> 2017-04-19netfilter: helpers: remove data_len usage for inkernel helpersFlorian Westphal No need to track this for inkernel helpers anymore as NF_CT_HELPER_BUILD_BUG_ON checks do this now. All inkernel helpers know what kind of structure they stored in helper->data. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> 2017-04-19netfilter: helper: add build-time asserts for helper data sizeFlorian Westphal add a 32 byte scratch area in the helper struct instead of relying on variable sized helpers plus compile-time asserts to let us know if 32 bytes aren't enough anymore. Not having variable sized helpers will later allow to add BUILD_BUG_ON for the total size of conntrack extensions -- the helper extension is the only one that doesn't have a fixed size. The (useless!) NF_CT_HELPER_BUILD_BUG_ON(0); are added so that in case someone adds a new helper and copy-pastes from one that doesn't store private data at least some indication that this macro should be used somehow is there... Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> 2016-08-30netfilter: conntrack: get rid of conntrack timerFlorian Westphal With stats enabled this eats 80 bytes on x86_64 per nf_conn entry, as Eric Dumazet pointed out during netfilter workshop 2016. Eric also says: "Another reason was the fact that Thomas was about to change max timer range [..]" (500462a9de657f8, 'timers: Switch to a non-cascading wheel'). Remove the timer and use a 32bit jiffies value containing timestamp until entry is valid. During conntrack lookup, even before doing tuple comparision, check the timeout value and evict the entry in case it is too old. The dying bit is used as a synchronization point to avoid races where multiple cpus try to evict the same entry. Because lookup is always lockless, we need to bump the refcnt once when we evict, else we could try to evict already-dead entry that is being recycled. This is the standard/expected way when conntrack entries are destroyed. Followup patches will introduce garbage colliction via work queue and further places where we can reap obsoleted entries (e.g. during netlink dumps), this is needed to avoid expired conntracks from hanging around for too long when lookup rate is low after a busy period. Signed-off-by: Florian Westphal <fw@strlen.de> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> 2015-08-11netfilter: nf_conntrack: push zone object into functionsDaniel Borkmann This patch replaces the zone id which is pushed down into functions with the actual zone object. It's a bigger one-time change, but needed for later on extending zones with a direction parameter, and thus decoupling this additional information from all call-sites. No functional changes in this patch. The default zone becomes a global const object, namely nf_ct_zone_dflt and will be returned directly in various cases, one being, when there's f.e. no zoning support. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>


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