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

David Miller
2013-08-09T05:25:22Z

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

> From: Eric Dumazet <edumazet@google.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@google.com>

Applied, thanks.