netdev - Re: [PATCH -next 1/2] net: ipv4: avoid repeated calls to ip_skb_dst

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Message-ID: <1432305817.28081.2.camel@stressinduktion.org>
Date:	Fri, 22 May 2015 16:43:37 +0200
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	Florian Westphal <fw@...len.de>
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH -next 1/2] net: ipv4: avoid repeated calls to
 ip_skb_dst_mtu helper

On Fr, 2015-05-22 at 16:32 +0200, Florian Westphal wrote:
> ip_skb_dst_mtu is small inline helper, but its called in several places.
> 
> before: 17061      44       0   17105    42d1 net/ipv4/ip_output.o
> after:  16805      44       0   16849    41d1 net/ipv4/ip_output.o
> 
> Signed-off-by: Florian Westphal <fw@...len.de>

Acked-by: Hannes Frederic Sowa <hannes@...essinduktion.org>

This also does reduce some dst_mtu === dst->ops->mtu() indirect calls,
maybe also giving a tiny speed-up. :)

Bye,
Hannes


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