Commit 94c77bb4 authored Oct 20, 2014 by Martin KaFai Lau Committed by David S. Miller Oct 24, 2014

ipv6: Avoid redoing fib6_lookup() for RTF_CACHE hit case



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>

parent a3c00e46

net/ipv6/route.c

+3 −3

Original line number	Diff line number	Diff line
		@@ -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))