Re: 802.11n TX ADDBA request supported?

hi!

So, ampdu_request doesn't send addba itself. It calls ic_send_action
because some NICs want a firmware message to start AMPDU, not sending
frames.

Look at what ath(4) is doing. It registers for ic_send_action and that
sends the actual frames.

mwl(4) (an old 11n marvell chipset, the first with freebsd 11n support)
instead uses a firmware message.


-adrin


On Tue, 4 Jul 2023 at 01:03, 吳恩緯 <rickywu0421@gmail.com> wrote:

> Hi,
>
> I'm working on 14.0-CURRENT, and I found that it seems net80211(4) lack of
> supporting 802.11n/e TX ADDBA request:
> When we call `ieee80211_ampdu_request()`, then the function ends up
> calling `ic->ic_send_action` (`ieee80211_send_action()`) with category
> `IEEE80211_ACTION_CAT_BA` and action `IEEE80211_ACTION_BA_ADDBA_REQUEST`.
> But then `ieee80211_send_action()` call the dummy function `send_inval()`
> which does nothing. So net80211(4) doesn't send ADDBA requests for us.
>
> The same thing happens when RX an ADDBA request, net80211(4) doesn't reply
> an ADDBA response to the transmitter. The only thing I found is that
> net80211(4) has the `ieee80211_send_bar()` which does send BA requests
> (which is not ADDBA request) for us. I wonder if there is something I'm
> missing or if the "TX/RX ADDBA request/response" is handling most in
> driver/firmware?
>
> Additionally, if I would like to test the 802.11n part in net80211(4),
> which driver/device is suggested to use? Thanks.
>