On heavily loaded systems the GC can take time to go over all existing conns and reset their timeout. At that time other calls like from nf_conntrack_in() can call of nf_ct_is_expired() and see the conn as expired. To fix this when we set the offload bit we should also reset the timeout instead of counting on GC to finish first iteration over all conns before the initial timeout.
First commit is to expose the function that updates the timeout. Second commit is to use it from act_ct. Roi Dayan (2): netfilter: conntrack: Move nf_ct_offload_timeout to header file net/sched: act_ct: Set offload timeout when setting the offload bit include/net/netfilter/nf_conntrack.h | 12 ++++++++++++ net/netfilter/nf_conntrack_core.c | 12 ------------ net/sched/act_ct.c | 2 ++ 3 files changed, 14 insertions(+), 12 deletions(-) -- 2.8.4
