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netfilter: nat: remove rcu_read_lock in __nf_nat_decode_session.

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__nf_nat_decode_session is called from nf_nat_decode_session as decodefn.
before calling decodefn, it already set rcu_read_lock. so rcu_read_lock in
__nf_nat_decode_session can be removed.

Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Taehee Yoo 2017-03-28 00:28:50 +09:00 committed by Pablo Neira Ayuso
parent 4f139972b4
commit 5389023421
1 changed files with 2 additions and 5 deletions
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7
net/netfilter/nf_nat_core.c
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@ -71,11 +71,10 @@ static void __nf_nat_decode_session(struct sk_buff *skb, struct flowi *fl)
if (ct == NULL)
return;
family = ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.l3num;
rcu_read_lock();
family = nf_ct_l3num(ct);
l3proto = __nf_nat_l3proto_find(family);
if (l3proto == NULL)
goto out;
return;
dir = CTINFO2DIR(ctinfo);
if (dir == IP_CT_DIR_ORIGINAL)
@ -84,8 +83,6 @@ static void __nf_nat_decode_session(struct sk_buff *skb, struct flowi *fl)
statusbit = IPS_SRC_NAT;
l3proto->decode_session(skb, ct, dir, statusbit, fl);
out:
rcu_read_unlock();
}
int nf_xfrm_me_harder(struct net *net, struct sk_buff *skb, unsigned int family)