From: Eric Dumazet <eric.dumazet@gmail.com>
To: Jesper Dangaard Brouer <hawk@comx.dk>
Cc: Alexander Duyck <alexander.h.duyck@intel.com>,
netdev <netdev@vger.kernel.org>,
Neil Horman <nhorman@tuxdriver.com>,
Stanislaw Gruszka <sgruszka@redhat.com>
Subject: Re: LRO disable warnings on kernel 2.6.38
Date: Mon, 21 Mar 2011 11:11:22 +0100 [thread overview]
Message-ID: <1300702282.2884.23.camel@edumazet-laptop> (raw)
In-Reply-To: <1300701852.10934.67.camel@firesoul.comx.local>
Le lundi 21 mars 2011 à 11:04 +0100, Jesper Dangaard Brouer a écrit :
> On Mon, 2011-03-21 at 10:53 +0100, Eric Dumazet wrote:
> > Couly you please send us the result of "ethtool -k eth01" to make sure
> > its the problem ?
>
> prod server:
>
> albpd4:~# ethtool -k eth01
> Offload parameters for eth01:
> rx-checksumming: on
> tx-checksumming: on
> scatter-gather: on
> tcp-segmentation-offload: on
> udp-fragmentation-offload: off
> generic-segmentation-offload: on
> generic-receive-offload: on
> large-receive-offload: on
> ntuple-filters: off
> receive-hashing: off
>
> pre-prod server:
>
> albpd1:~# ethtool -k eth01
> Offload parameters for eth01:
> rx-checksumming: on
> tx-checksumming: on
> scatter-gather: on
> tcp-segmentation-offload: on
> udp-fragmentation-offload: off
> generic-segmentation-offload: on
> generic-receive-offload: on
> large-receive-offload: off
> ntuple-filters: off
> receive-hashing: off
>
> Hmm... notice how the large-receive-offload (LRO) is different on the
> two machines.
>
> I cannot disable LRO with userspace ethtool:
>
> albpd4:~# ethtool -K eth01 lro off
> Cannot set large receive offload settings: Invalid argument
>
Sure, this is the problem. Still your ethtool dont give us the needed
info ;)
I suspect it is :
rx-vlan-offload: off
tx-vlan-offload: on
But would like a confirmation of this ;)
# ethtool -V | head -n 1
ethtool version 2.6.37
# ethtool --version
ethtool version 2.6.37
next prev parent reply other threads:[~2011-03-21 10:11 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-18 11:12 LRO disable warnings on kernel 2.6.38 Jesper Dangaard Brouer
2011-03-18 13:05 ` Eric Dumazet
2011-03-18 14:17 ` Ben Hutchings
2011-03-18 14:33 ` Eric Dumazet
2011-03-18 15:15 ` Stephen Hemminger
2011-03-18 19:52 ` David Miller
2011-03-18 19:58 ` Ben Hutchings
2011-03-18 19:59 ` David Miller
2011-03-18 15:40 ` Ben Hutchings
2011-03-18 16:18 ` Alexander Duyck
2011-03-21 9:21 ` Jesper Dangaard Brouer
2011-03-21 9:45 ` Eric Dumazet
2011-03-21 9:53 ` Eric Dumazet
2011-03-21 10:04 ` Jesper Dangaard Brouer
2011-03-21 10:11 ` Eric Dumazet [this message]
2011-03-21 10:27 ` Jesper Dangaard Brouer
2011-03-21 10:00 ` Amit Salecha
2011-03-21 12:34 ` Stanislaw Gruszka
2011-03-21 13:46 ` Stanislaw Gruszka
2011-03-21 13:52 ` Ben Hutchings
2011-03-21 15:10 ` [RFC] net: fix ethtool->set_flags not intended -EINVAL return value Stanislaw Gruszka
2011-03-21 15:15 ` Ben Hutchings
2011-03-22 2:41 ` Jesse Gross
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