netfilter: nf_conntrack: add support for "conntrack zones"
Normally, each connection needs a unique identity. Conntrack zones allow
to specify a numerical zone using the CT target, connections in different
zones can use the same identity.
Example:
iptables -t raw -A PREROUTING -i veth0 -j CT --zone 1
iptables -t raw -A OUTPUT -o veth1 -j CT --zone 1
Signed-off-by: Patrick McHardy <kaber@trash.net>
diff --git a/include/net/netfilter/nf_conntrack_extend.h b/include/net/netfilter/nf_conntrack_extend.h
index e192dc1..2d2a1f9 100644
--- a/include/net/netfilter/nf_conntrack_extend.h
+++ b/include/net/netfilter/nf_conntrack_extend.h
@@ -8,6 +8,7 @@
NF_CT_EXT_NAT,
NF_CT_EXT_ACCT,
NF_CT_EXT_ECACHE,
+ NF_CT_EXT_ZONE,
NF_CT_EXT_NUM,
};
@@ -15,6 +16,7 @@
#define NF_CT_EXT_NAT_TYPE struct nf_conn_nat
#define NF_CT_EXT_ACCT_TYPE struct nf_conn_counter
#define NF_CT_EXT_ECACHE_TYPE struct nf_conntrack_ecache
+#define NF_CT_EXT_ZONE_TYPE struct nf_conntrack_zone
/* Extensions: optional stuff which isn't permanently in struct. */
struct nf_ct_ext {