netdev - Re: [PATCH net-next V2] gro: introduce gro_mac_header

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Message-ID: <CAG4TOxNcB8+SP3f0WhZG1GZ481s+=7pVRv91vzAbwDzUZD8g_A@mail.gmail.com>
Date:	Mon, 6 Feb 2012 12:01:13 -0800
From:	Roland Dreier <roland@...nel.org>
To:	David Miller <davem@...emloft.net>
Cc:	eric.dumazet@...il.com, ogerlitz@...lanox.com,
	sean.hefty@...el.com, herbert@...dor.hengli.com.au,
	linux-rdma@...r.kernel.org, shlomop@...lanox.com,
	netdev@...r.kernel.org
Subject: Re: [PATCH net-next V2] gro: introduce gro_mac_header_len

On Mon, Feb 6, 2012 at 11:56 AM, David Miller <davem@...emloft.net> wrote:
> But this needs a little bit of work since the qdisc_skb_cb ends with a
> variable length array, but we can put an upper bound on this just like
> we do for skb->cb[] itself to fix this issue.
>
> I'll toss something together.

OK thanks.  We need something like 20 bytes of space to stash an
ipoib LL addr.  Which I guess leaves 28 bytes for sch use.

 - R.
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