netdev - [PATCH RFC v3 net 2/2] ipv6: Avoid restarting fib6_lookup() for RTF

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Message-ID: <1412640315-22472-3-git-send-email-kafai@fb.com>
Date:	Mon, 6 Oct 2014 17:05:15 -0700
From:	Martin KaFai Lau <kafai@...com>
To:	<netdev@...r.kernel.org>
CC:	Hannes Frederic Sowa <hannes@...essinduktion.org>
Subject: [PATCH RFC v3 net 2/2] ipv6: Avoid restarting fib6_lookup() for RTF_CACHE hit case

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

Cc: Hannes Frederic Sowa <hannes@...essinduktion.org>
Signed-off-by: Martin KaFai Lau <kafai@...com>
---
 net/ipv6/route.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index d53dc4f..e40b5dc 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -937,7 +937,7 @@ restart:
 		rt = rt6_multipath_select(rt, fl6, oif, strict | reachable);
 	BACKTRACK(net, &fl6->saddr);
 	if (rt->rt6i_flags & RTF_CACHE)
-		goto out;
+		goto out1;
 
 	dst_hold(&rt->dst);
 	read_unlock_bh(&table->tb6_lock);
@@ -974,6 +974,7 @@ out:
 		reachable = 0;
 		goto restart_2;
 	}
+out1:
 	dst_hold(&rt->dst);
 	read_unlock_bh(&table->tb6_lock);
 out2:
-- 
1.8.1

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