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netfilter: Remove explicit rcu_read_lock in nf_hook_slow

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All of the callers of nf_hook_slow already hold the rcu_read_lock, so this
cleanup removes the recursive call.  This is just a cleanup, as the locking
code gracefully handles this situation.

Signed-off-by: Aaron Conole <aconole@bytheb.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Aaron Conole
2016-09-21 11:35:04 -04:00
committed by Pablo Neira Ayuso
parent 2c1e2703ff
commit e2361cb90a
14 changed files with 19 additions and 19 deletions
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2
net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
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@@ -115,7 +115,7 @@ static unsigned int ipv6_helper(void *priv,
help = nfct_help(ct);
if (!help)
return NF_ACCEPT;
/* rcu_read_lock()ed by nf_hook_slow */
/* rcu_read_lock()ed by nf_hook_thresh */
helper = rcu_dereference(help->helper);
if (!helper)
return NF_ACCEPT;

2
net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
View File

@@ -165,7 +165,7 @@ icmpv6_error_message(struct net *net, struct nf_conn *tmpl,
return -NF_ACCEPT;
}
/* rcu_read_lock()ed by nf_hook_slow */
/* rcu_read_lock()ed by nf_hook_thresh */
inproto = __nf_ct_l4proto_find(PF_INET6, origtuple.dst.protonum);
/* Ordinarily, we'd expect the inverted tupleproto, but it's