netdev - Re: [PATCH RFC 05/14] drivers: wireless: ar5523: use container

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Date:	Tue, 03 Mar 2015 10:16:55 +0100
From:	Pontus Fuchs <pontus.fuchs@...il.com>
To:	Florian Westphal <fw@...len.de>, netdev@...r.kernel.org
CC:	linux-wireless@...r.kernel.org
Subject: Re: [PATCH RFC 05/14] drivers: wireless: ar5523: use container_of

On 2015-03-02 18:40, Florian Westphal wrote:
> Compile tested only due to lack of hw.
>
> If we want to shrink skb->cb then we'd have to see about
> reducing struct ieee80211_tx_info, which gets embedded inside
> skb->cb[].
>
> It provides a scratch space to be used by wireless drivers.
> ar5523 uses the maximum space available today (40 bytes), but it seems
> we don't need this -- data->skb pointer seems to always point back to the
> skb whose cb buffer the data structure resides, iow, given a pointer to the
> embedded control buffer we can infer the skb address.
>
> Cc: linux-wireless@...r.kernel.org
> Signed-off-by: Florian Westphal <fw@...len.de>

Tested-by: Pontus Fuchs <pontus.fuchs@...il.com>

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