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RE: RFC: SMPS for AP mode

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Hi Vivek,

Do you plan to implement this piece of code?

Regards,
Naveen.
________________________________________
From: linux-wireless-owner@xxxxxxxxxxxxxxx [linux-wireless-owner@xxxxxxxxxxxxxxx] on behalf of Johannes Berg [johannes@xxxxxxxxxxxxxxxx]
Sent: Tuesday, April 09, 2013 3:49 PM
To: Vivekananda Holla
Cc: linux-wireless@xxxxxxxxxxxxxxx; nbd@xxxxxxxxxxx
Subject: Re: RFC: SMPS for AP mode

Hi,

> based on the discussion, i have come out with an RFC for SMPS support
> for AP in minstrel_ht. kindly see the explanation below and indicate to
> me, if this okay or any changes are required?

Code talks ;-)

> RFC To send out RTS for AP connected to a dynamic SMPS station
>
> This code change addresses the AP requirement of sending out a
> RTS frame when dynamic SMPS is enabled at the station
>
> the minstrel_ht rate module needs to provide the lower driver layer
> an indication of enabling RTS frame transmission for an AP connected
> to a dynamic SMPS station.

It really just needs to set the RTS flag on the frames.

> the SMPS state of the station is stored in the ieee80211_sta
> structure's ht_cap variable.

No, not any more.

> the minstrel_ht_get_rate function can be modified to check if the
> station is a dynamic SMPS
> station and a new flag can be incorporated for the ieee80211_tx_info
> flags (e.g. IEEE80211_TX_CTL_SMPS_SET_RTS)
> that indicates to the lower layer that the station is a dynamic SMPS
> enabled station.
>
> the lower AP driver can then enable RTS before the first frame
> transmission to the station by checking for the above flag.

Sounds about right.

johannes

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