netdev - Re: [PATCH net-next v2] tcp: metrics: Handle v6/v4-mapped sockets in tcp-metrics

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Date:	Wed, 22 Jan 2014 06:49:31 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Christoph Paasch <christoph.paasch@...ouvain.be>
Cc:	David Miller <davem@...emloft.net>, netdev@...r.kernel.org
Subject: Re: [PATCH net-next v2] tcp: metrics: Handle v6/v4-mapped sockets
 in tcp-metrics

On Wed, 2014-01-22 at 13:58 +0100, Christoph Paasch wrote:
> A socket may be v6/v4-mapped. In that case sk->sk_family is AF_INET6,
> but the IP being used is actually an IPv4-address.
> Current's tcp-metrics will thus represent it as an IPv6-address:
> 
> root@...ver:~# ip tcp_metrics
> ::ffff:10.1.1.2 age 22.920sec rtt 18750us rttvar 15000us cwnd 10
> 10.1.1.2 age 47.970sec rtt 16250us rttvar 10000us cwnd 10
> 
> This patch modifies the tcp-metrics so that they are able to handle the
> v6/v4-mapped sockets correctly.
> 
> Signed-off-by: Christoph Paasch <christoph.paasch@...ouvain.be>
> ---

Acked-by: Eric Dumazet <edumazet@...gle.com>


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