Thanks for your reply, Bob.

My problem is not exactly compatibility of hardware. Instead, I want
the driver to send out the response as soon as it receives a packet
(when notified by interrupt ath5k_intr() ).

I am thinking of calling ath5k_tx(struct ieee80211_hw *hw, struct
sk_buff *skb) inside ath5k_tasklet_rx(). However, I have difficulty in
passing the correct skb.

If I am not wrong, struct sk_buff *skb should point to a complete WLAN
packet. Could anyone please advise on how to prepare such a packet.

Thanks again.
YY

On Mon, Jun 21, 2010 at 8:25 PM, Bob Copeland <me@bobcopeland.com> wrote:
quoted text
> On Mon, Jun 21, 2010 at 5:29 AM, Jin YunYe <yunyejin@gmail.com> wrote:
>
>> Alternatively, does anyone know how to "fill up" a skb structure
>> "manually" in the ath5k level and send it out using ath5k_tx()
>> directly?
>
> You might want to use packet injection and monitor mode
> for these kinds of things, then it will work with any
> Linux hardware.
>
>
>
> --
> Bob Copeland %% www.bobcopeland.com
>
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