[NETFILTER]: nf_conntrack: properly use RCU API for nf_ct_protos/nf_ct_l3protos arrays

Replace preempt_{enable,disable} based RCU by proper use of the
RCU API and add missing rcu_read_lock/rcu_read_unlock calls in
all paths not obviously only used within packet process context
(nfnetlink_conntrack).
  
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/net/netfilter/nf_conntrack_l3proto.h b/include/net/netfilter/nf_conntrack_l3proto.h
index 664ddcffe00d..ba760fe09b8a 100644
--- a/include/net/netfilter/nf_conntrack_l3proto.h
+++ b/include/net/netfilter/nf_conntrack_l3proto.h
@@ -106,7 +106,7 @@ __nf_ct_l3proto_find(u_int16_t l3proto)
 {
         if (unlikely(l3proto >= AF_MAX))
                 return &nf_conntrack_l3proto_generic;
-        return nf_ct_l3protos[l3proto];
+        return rcu_dereference(nf_ct_l3protos[l3proto]);
 }
 
 #endif /*_NF_CONNTRACK_L3PROTO_H*/