From: KY Srinivasan
> Sent: 16 September 2015 23:58
...
> > I think we get that. The question is does the Remote NDIS header and
> > packet info actually need to be a part of the header data? I would
> > argue that it probably doesn't.
> >
> > So for example in netvsc_start_xmit it looks like
David Miller writes:
> From: David Laight
> Date: Wed, 16 Sep 2015 16:25:03 +
>
>> Am I right in thinking this is adding an extra 96 unused bytes to the front
>> of almost all skb just so that hyper-v can make its link level header
>> contiguous
italy Kuznetsov <vkuzn...@redhat.com>; netdev@vger.kernel.org
> Cc: David S. Miller <da...@davemloft.net>; linux-ker...@vger.kernel.org;
> Jason Wang <jasow...@redhat.com>
> Subject: RE: [PATCH net-next RFC] net: increase LL_MAX_HEADER for Hyper-V
>
> From: KY Sr
From: KY Srinivasan
Date: Thu, 17 Sep 2015 15:14:05 +
> I think I can achieve my original goal of not having any allocation
> in the send path by carefully using the memory available in the skb:
Please stop flat-out ignoring David L.'s suggestion.
Have a pre-cooked ring
From: KY Srinivasan
Date: Thu, 17 Sep 2015 19:52:01 +
>
>
>> -Original Message-
>> Have a pre-cooked ring of buffers for these descriptors that you can
>> point the chip at. No per-packet allocation is necessary at all.
>
> Even if I had a ring of buffers, I
;; vkuzn...@redhat.com; netdev@vger.kernel.org;
> linux-ker...@vger.kernel.org; jasow...@redhat.com
> Subject: Re: [PATCH net-next RFC] net: increase LL_MAX_HEADER for Hyper-V
>
> From: KY Srinivasan <k...@microsoft.com>
> Date: Thu, 17 Sep 2015 15:14:05 +
>
> &
;; vkuzn...@redhat.com; netdev@vger.kernel.org;
> linux-ker...@vger.kernel.org; jasow...@redhat.com
> Subject: Re: [PATCH net-next RFC] net: increase LL_MAX_HEADER for Hyper-V
>
> From: KY Srinivasan <k...@microsoft.com>
> Date: Thu, 17 Sep 2015 19:52:01 +
>
> >
>
> -Original Message-
> From: Vitaly Kuznetsov [mailto:vkuzn...@redhat.com]
> Sent: Wednesday, September 16, 2015 11:50 AM
> To: netdev@vger.kernel.org
> Cc: David S. Miller ; linux-ker...@vger.kernel.org;
> KY Srinivasan ; Haiyang Zhang
>
From: Haiyang Zhang
> Sent: 16 September 2015 17:09
> > -Original Message-
> > From: Vitaly Kuznetsov [mailto:vkuzn...@redhat.com]
> > Sent: Wednesday, September 16, 2015 11:50 AM
> > To: netdev@vger.kernel.org
> > Cc: David S. Miller ; linux-ker...@vger.kernel.org;
>
t;da...@davemloft.net>; linux-ker...@vger.kernel.org;
> KY Srinivasan <k...@microsoft.com>; Jason Wang <jasow...@redhat.com>
> Subject: RE: [PATCH net-next RFC] net: increase LL_MAX_HEADER for Hyper-
> V
>
> From: Haiyang Zhang
> > Sent: 16 September 201
From: David Laight
Date: Wed, 16 Sep 2015 16:25:03 +
> Am I right in thinking this is adding an extra 96 unused bytes to the front
> of almost all skb just so that hyper-v can make its link level header
> contiguous with whatever follows (IP header ?).
>
> Doesn't
id S. Miller <da...@davemloft.net>; linux-ker...@vger.kernel.org;
KY Srinivasan <k...@microsoft.com>; Jason Wang <jasow...@redhat.com>
Subject: RE: [PATCH net-next RFC] net: increase LL_MAX_HEADER for Hyper-
V
From: Haiyang Zhang
Sent: 16 September 2015 17:09
-Original Messa
.@microsoft.com>;
Vitaly Kuznetsov <vkuzn...@redhat.com>; netdev@vger.kernel.org
Cc: David S. Miller <da...@davemloft.net>; linux-ker...@vger.kernel.org;
Jason Wang <jasow...@redhat.com>
Subject: Re: [PATCH net-next RFC] net: increase LL_MAX_HEADER for Hyper-V
On 09/1
om>;
> Vitaly Kuznetsov <vkuzn...@redhat.com>; netdev@vger.kernel.org
> Cc: David S. Miller <da...@davemloft.net>; linux-ker...@vger.kernel.org;
> Jason Wang <jasow...@redhat.com>
> Subject: Re: [PATCH net-next RFC] net: increase LL_MAX_HEADER for Hyper-V
>
> On 09/
om>;
> Vitaly Kuznetsov <vkuzn...@redhat.com>; netdev@vger.kernel.org
> Cc: David S. Miller <da...@davemloft.net>; linux-ker...@vger.kernel.org;
> Jason Wang <jasow...@redhat.com>
> Subject: Re: [PATCH net-next RFC] net: increase LL_MAX_HEADER for Hyper-V
>
> On 09/
On 09/16/2015 09:25 AM, David Laight wrote:
From: Haiyang Zhang
Sent: 16 September 2015 17:09
-Original Message-
From: Vitaly Kuznetsov [mailto:vkuzn...@redhat.com]
Sent: Wednesday, September 16, 2015 11:50 AM
To: netdev@vger.kernel.org
Cc: David S. Miller ;
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