[PATCH] small optimization in __ip_conntrack_find()

[Martin Josefsson]

Hi,

Attached is a small optimization for __ip_conntrack_find().
The way I read the use of the LIST_FIND macro it seems that we are
calling hash_conntrack() for each iteration with the same inparameters.

My change calls it once before looping.

-- 
/Martin

Never argue with an idiot. They drag you down to their level, then beat
you with experience.

--- linux-2.4.19-pre10/net/ipv4/netfilter/ip_conntrack_core.c.orig      Sat Jun  8 
00:48:59 2002
+++ linux-2.4.19-pre10/net/ipv4/netfilter/ip_conntrack_core.c   Sat Jun  8 00:49:56 
+2002
@@ -292,9 +292,10 @@
                    const struct ip_conntrack *ignored_conntrack)
 {
        struct ip_conntrack_tuple_hash *h;
+       size_t hash = hash_conntrack(tuple);
 
        MUST_BE_READ_LOCKED(&ip_conntrack_lock);
-       h = LIST_FIND(&ip_conntrack_hash[hash_conntrack(tuple)],
+       h = LIST_FIND(&ip_conntrack_hash[hash],
                      conntrack_tuple_cmp,
                      struct ip_conntrack_tuple_hash *,
                      tuple, ignored_conntrack);