netdev - Re: [PATCH v2 net-next] net: add SNMP counters tracking incoming ECN bits

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Message-Id: <20130808.222519.1955301555484469421.davem@davemloft.net>
Date:	Thu, 08 Aug 2013 22:25:19 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH v2 net-next] net: add SNMP counters tracking incoming
 ECN bits

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Tue, 06 Aug 2013 03:32:11 -0700

> From: Eric Dumazet <edumazet@...gle.com>
> 
> With GRO/LRO processing, there is a problem because Ip[6]InReceives SNMP
> counters do not count the number of frames, but number of aggregated
> segments.
> 
> Its probably too late to change this now.
> 
> This patch adds four new counters, tracking number of frames, regardless
> of LRO/GRO, and on a per ECN status basis, for IPv4 and IPv6.
> 
> Ip[6]NoECTPkts : Number of packets received with NOECT
> Ip[6]ECT1Pkts  : Number of packets received with ECT(1)
> Ip[6]ECT0Pkts  : Number of packets received with ECT(0)
> Ip[6]CEPkts    : Number of packets received with Congestion Experienced
> 
> lph37:~# nstat | egrep "Pkts|InReceive"
> IpInReceives                    1634137            0.0
> Ip6InReceives                   3714107            0.0
> Ip6InNoECTPkts                  19205              0.0
> Ip6InECT0Pkts                   52651828           0.0
> IpExtInNoECTPkts                33630              0.0
> IpExtInECT0Pkts                 15581379           0.0
> IpExtInCEPkts                   6                  0.0
> 
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>

Applied, thanks.
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