netfilter: add glue code to integrate nfnetlink_queue and ctnetlink
authorPablo Neira Ayuso <pablo@netfilter.org>
Thu, 7 Jun 2012 10:13:39 +0000 (12:13 +0200)
committerPablo Neira Ayuso <pablo@netfilter.org>
Sat, 16 Jun 2012 13:09:02 +0000 (15:09 +0200)
commit9cb0176654a7dc33a32af8a0bc9e0b2f9f9ebb0f
treed4945c63214441653bcd3f0ea3b3a15fb031798a
parent1afc56794e03229fa53cfa3c5012704d226e1dec
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>
include/linux/netfilter.h
include/linux/netfilter/nfnetlink_queue.h
net/netfilter/core.c
net/netfilter/nf_conntrack_netlink.c
net/netfilter/nfnetlink_queue.c