From: Martin KaFai Lau <kafai@fb.com>
Date: Mon, 20 Oct 2014 20:42:45 +0000 (-0700)
Subject: ipv6: Avoid redoing fib6_lookup() with reachable = 0 by saving fn
X-Git-Tag: omap-for-v3.19/fixes-rc1~125^2~356^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=367efcb932c1cfc134d5b1fd9db8665ae5e6a251;p=pandora-kernel.git

ipv6: Avoid redoing fib6_lookup() with reachable = 0 by saving fn

This patch save the fn before doing rt6_backtrack.
Hence, without redo-ing the fib6_lookup(), saved_fn can be used
to redo rt6_select() with RT6_LOOKUP_F_REACHABLE off.

Some minor changes I think make sense to review as a single patch:
* Remove the 'out:' goto label.
* Remove the 'reachable' variable. Only use the 'strict' variable instead.

After this patch, "failing ip6_ins_rt()" should be the only case that
requires a redo of fib6_lookup().

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>
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