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netfilter: nfnetlink_queue: autoload nf_conntrack_netlink module NFQA_CFG_F_CONNTRACK config flag

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This patch enables to load nf_conntrack_netlink module if
NFQA_CFG_F_CONNTRACK config flag is specified.

Signed-off-by: Ken-ichirou MATSUZAWA <chamas@h4.dion.ne.jp>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Ken-ichirou MATSUZAWA 2016-01-05 09:32:59 +09:00 committed by Pablo Neira Ayuso
parent 21c3c971d1
commit 71b2e5f5ca
1 changed files with 11 additions and 0 deletions
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11
net/netfilter/nfnetlink_queue.c
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@ -1147,6 +1147,17 @@ static int nfqnl_recv_config(struct net *net, struct sock *ctnl,
if (flags & mask & NFQA_CFG_F_SECCTX)
return -EOPNOTSUPP;
#endif
if ((flags & mask & NFQA_CFG_F_CONNTRACK) &&
!rcu_access_pointer(nfnl_ct_hook)) {
#ifdef CONFIG_MODULES
nfnl_unlock(NFNL_SUBSYS_QUEUE);
request_module("ip_conntrack_netlink");
nfnl_lock(NFNL_SUBSYS_QUEUE);
if (rcu_access_pointer(nfnl_ct_hook))
return -EAGAIN;
#endif
return -EOPNOTSUPP;
}
}
rcu_read_lock();