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| author |   Daniel Borkmann <daniel@iogearbox.net> | 2015-08-14 16:03:40 +0200 |
|---|---|---|
| committer |   Pablo Neira Ayuso <pablo@netfilter.org> | 2015-08-18 01:24:05 +0200 |
| commit | 5e8018fc61423e677398d4ad4d72df70b9788e77 (patch) | |
| tree | 5605633fddd52cf0a677ad6f62fb8bb2e7a46054 /net/ipv4/netfilter | |
| parent | netfilter: nf_conntrack: add direction support for zones (diff) | |
| download | linux-dev-5e8018fc61423e677398d4ad4d72df70b9788e77.tar.xz linux-dev-5e8018fc61423e677398d4ad4d72df70b9788e77.zip | |
netfilter: nf_conntrack: add efficient mark to zone mapping
This work adds the possibility of deriving the zone id from the skb->mark
field in a scalable manner. This allows for having only a single template
serving hundreds/thousands of different zones, for example, instead of the
need to have one match for each zone as an extra CT jump target.
Note that we'd need to have this information attached to the template as at
the time when we're trying to lookup a possible ct object, we already need
to know zone information for a possible match when going into
__nf_conntrack_find_get(). This work provides a minimal implementation for
a possible mapping.
In order to not add/expose an extra ct->status bit, the zone structure has
been extended to carry a flag for deriving the mark.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/ipv4/netfilter')
| -rw-r--r-- | net/ipv4/netfilter/nf_conntrack_proto_icmp.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ipv4/netfilter/nf_conntrack_proto_icmp.c b/net/ipv4/netfilter/nf_conntrack_proto_icmp.c index 8a2f41c2fe6f..cdde3ec496e9 100644 --- a/net/ipv4/netfilter/nf_conntrack_proto_icmp.c +++ b/net/ipv4/netfilter/nf_conntrack_proto_icmp.c @@ -135,9 +135,10 @@ icmp_error_message(struct net *net, struct nf_conn *tmpl, struct sk_buff *skb, const struct nf_conntrack_l4proto *innerproto; const struct nf_conntrack_tuple_hash *h; const struct nf_conntrack_zone *zone; + struct nf_conntrack_zone tmp; NF_CT_ASSERT(skb->nfct == NULL); - zone = nf_ct_zone_tmpl(tmpl); + zone = nf_ct_zone_tmpl(tmpl, skb, &tmp); /* Are they talking about one of our connections? */ if (!nf_ct_get_tuplepr(skb, |