netdev - Re: user space virtio-net exits with "truncating packet" error

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Message-Id: <200905201217.30939.rusty@rustcorp.com.au>
Date:	Wed, 20 May 2009 12:17:30 +0930
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	Or Gerlitz <ogerlitz@...taire.com>
Cc:	Avi Kivity <avi@...hat.com>, netdev@...r.kernel.org,
	Gregory Haskins <ghaskins@...ell.com>,
	Anthony Liguori <anthony@...emonkey.ws>,
	Mark McLoughlin <markmc@...hat.com>
Subject: Re: user space virtio-net exits with "truncating packet" error

On Tue, 19 May 2009 09:49:02 pm Or Gerlitz wrote:
> okay, this is the info from my guest after applying the patch on its
> kernel.
...
> [root@vm1 ~]# cat /sys/class/net/eth0/device/features
> 0000010000000000000000001000000000000000000000000000000000000000

Bit 5 = VIRTIO_NET_F_MAC (the host set the mac address)
Bit 24 = VIRTIO_F_NOTIFY_ON_EMPTY

You don't have any GSO or checksum offload here.

Rusty.

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