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Re: [PATCH] rt2x00: Rename tx_info to info to help compat-wirelessrevert MQ support for older kernels

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On Fri, Jun 6, 2008 at 3:39 AM, Rindjunsky, Ron
<ron.rindjunsky@xxxxxxxxx> wrote:
>>> Rename tx_info to info as used by other drivers. This will help
>>> with CONFIG_NETDEVICES_MULTIQUEUE requirement for HT support support
>>> in compat-wireless by allowing us to map skb_get_queue_mapping(skb)
>>> to the old info->queue.
>>>
>>> An alternative is to maintain a large compat.diff which replaces all
>>> skb_get_queue_mapping(skb) calls back to info->queue but since this
>>> is the only driver which requires name change it seems worth it
>>> to help with maintenance.
>>>
>>> Compat-wireless shouldn't be a reason to accept patches in but if
>>> the changes are just cosmetic it seems worth the benefit.
>>>
>>> Signed-off-by: Luis R. Rodriguez <mcgrof@xxxxxxxxx>
>
>> That's just asking for trouble. If you really _must_ do magic in
>> skb_get_queue_mapping, do it directly:
>
>> int q = IEEE80211_SKB_CB(skb)->queue;
>
> Aren't we heading into to troubles here? In kernels < 2.6.23 there is no
> skb->queue_mapping. queue was once passed in the cb, but now that queue
> was removed from info and info takes cb we are going to have a compat
> problem.

This is only going to be done for <= 2.6.22.

  Luis
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