From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ian Campbell <Ian.Campbell@citrix.com>
Subject: Re: [PATCHv2 net-next] xen-netback: remove
 unconditional __pskb_pull_tail() in guest Tx path
Date: Wed, 5 Nov 2014 10:59:32 +0000
Message-ID: <1415185172.15200.0.camel@citrix.com>
References: <1415184622-19421-1-git-send-email-david.vrabel@citrix.com>
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To: David Vrabel <david.vrabel@citrix.com>
Cc: xen-devel@lists.xenproject.org, Malcolm Crossley <malcolm.crossley@citrix.com>, Paul Durrant <paul.durrant@citrix.com>, Wei Liu <wei.liu2@citrix.com>
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Dropping netdev since this isn't relevant to them, adding Paul

On Wed, 2014-11-05 at 10:50 +0000, David Vrabel wrote:
> - performance: Netback has already grant copied up-to 128 bytes from
>   the first slot of a packet into the linear area. The first slot
>   normally contain all the IPv4/IPv6 and TCP/UDP headers.

Does "normally" include guests other than Linux? I thought Windows in
particular was prone to splitting the headers into a frag per layer or
thereabouts?

Ian