diff options
| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2018-06-02 23:38:49 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2018-06-03 00:02:10 +0200 |
| commit | 79b174ade16d90302aef6e14f5eefd0b723c1602 (patch) | |
| tree | 5093b803e1add42afa344cb0d70f8d2afac7a5e2 /net/netfilter/nft_dynset.c | |
| parent | 3453c92731884bad7c4c3a0667228b964747f3d5 (diff) | |
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>
Diffstat (limited to 'net/netfilter/nft_dynset.c')
| -rw-r--r-- | net/netfilter/nft_dynset.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/net/netfilter/nft_dynset.c b/net/netfilter/nft_dynset.c index b07a3fd9eeea..4d49529cff61 100644 --- a/net/netfilter/nft_dynset.c +++ b/net/netfilter/nft_dynset.c @@ -195,6 +195,15 @@ static int nft_dynset_init(const struct nft_ctx *ctx, err = -EOPNOTSUPP; if (!(priv->expr->ops->type->flags & NFT_EXPR_STATEFUL)) goto err1; + + if (priv->expr->ops->type->flags & NFT_EXPR_GC) { + if (set->flags & NFT_SET_TIMEOUT) + goto err1; + if (!set->ops->gc_init) + goto err1; + set->ops->gc_init(set); + } + } else if (set->flags & NFT_SET_EVAL) return -EINVAL; |