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| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2012-06-07 12:13:39 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2012-06-16 15:09:02 +0200 |
| commit | 9cb0176654a7dc33a32af8a0bc9e0b2f9f9ebb0f (patch) | |
| tree | d4945c63214441653bcd3f0ea3b3a15fb031798a /include/linux/netfilter.h | |
| parent | 1afc56794e03229fa53cfa3c5012704d226e1dec (diff) | |
| download | lwn-9cb0176654a7dc33a32af8a0bc9e0b2f9f9ebb0f.tar.gz lwn-9cb0176654a7dc33a32af8a0bc9e0b2f9f9ebb0f.zip | |
netfilter: add glue code to integrate nfnetlink_queue and ctnetlink
This patch allows you to include the conntrack information together
with the packet that is sent to user-space via NFQUEUE.
Previously, there was no integration between ctnetlink and
nfnetlink_queue. If you wanted to access conntrack information
from your libnetfilter_queue program, you required to query
ctnetlink from user-space to obtain it. Thus, delaying the packet
processing even more.
Including the conntrack information is optional, you can set it
via NFQA_CFG_F_CONNTRACK flag with the new NFQA_CFG_FLAGS attribute.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'include/linux/netfilter.h')
| -rw-r--r-- | include/linux/netfilter.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h index 4541f33dbfc3..ba65bfbd7f74 100644 --- a/include/linux/netfilter.h +++ b/include/linux/netfilter.h @@ -393,6 +393,16 @@ nf_nat_decode_session(struct sk_buff *skb, struct flowi *fl, u_int8_t family) extern void (*ip_ct_attach)(struct sk_buff *, struct sk_buff *) __rcu; extern void nf_ct_attach(struct sk_buff *, struct sk_buff *); extern void (*nf_ct_destroy)(struct nf_conntrack *) __rcu; + +struct nf_conn; +struct nlattr; + +struct nfq_ct_hook { + size_t (*build_size)(const struct nf_conn *ct); + int (*build)(struct sk_buff *skb, struct nf_conn *ct); + int (*parse)(const struct nlattr *attr, struct nf_conn *ct); +}; +extern struct nfq_ct_hook *nfq_ct_hook; #else static inline void nf_ct_attach(struct sk_buff *new, struct sk_buff *skb) {} #endif |