tree 5093b803e1add42afa344cb0d70f8d2afac7a5e2
parent 3453c92731884bad7c4c3a0667228b964747f3d5
author Pablo Neira Ayuso <pablo@netfilter.org> 1527975529 +0200
committer Pablo Neira Ayuso <pablo@netfilter.org> 1527976930 +0200

netfilter: nf_tables: garbage collection for stateful expressions

Use garbage collector to schedule removal of elements based of feedback
from expression that this element comes with. Therefore, the garbage
collector is not guided by timeout expirations in this new mode.

The new connlimit expression sets on the NFT_EXPR_GC flag to enable this
behaviour, the dynset expression needs to explicitly enable the garbage
collector via set->ops->gc_init call.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>