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ipv6: Avoid redoing fib6_lookup() for RTF_CACHE hit case

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When there is a RTF_CACHE hit, no need to redo fib6_lookup()
with reachable=0.

Cc: David Miller <davem@davemloft.net>
Cc: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Martin KaFai Lau 2014-10-20 13:42:44 -07:00 committed by David S. Miller
parent a3c00e46ef
commit 94c77bb41d
1 changed files with 3 additions and 3 deletions
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6
net/ipv6/route.c
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@ -944,12 +944,12 @@ static struct rt6_info *ip6_pol_route(struct net *net, struct fib6_table *table,
goto out;
}
if (rt->rt6i_flags & RTF_CACHE)
goto out;
dst_hold(&rt->dst);
read_unlock_bh(&table->tb6_lock);
if (rt->rt6i_flags & RTF_CACHE)
goto out2;
if (!(rt->rt6i_flags & (RTF_NONEXTHOP | RTF_GATEWAY)))
nrt = rt6_alloc_cow(rt, &fl6->daddr, &fl6->saddr);
else if (!(rt->dst.flags & DST_HOST))