[PATCH 1/2] supplicant: Use high-priority queue for management packets.

Janusz Dziedzic janusz.dziedzic at tieto.com
Wed Feb 26 01:45:50 EST 2014


On 25 February 2014 19:39, Ben Greear <greearb at candelatech.com> wrote:
> On 02/25/2014 09:16 AM, Jouni Malinen wrote:
>> On Fri, Jan 31, 2014 at 02:55:17PM +0100, Johannes Berg wrote:
>>> The obvious other alternative would be to just do this in the kernel,
>>> assigning high priority to any packets that have
>>> tx->sdata->control_port_protocol == tx->skb->protocol (speaking in
>>> mac80211 language) - a number of drivers already do some special things
>>> via IEEE80211_TX_CTRL_PORT_CTRL_PROTO.
>>>
>>> I'm not entirely sure that's a better solution overall, but in terms of
>>> driver compatibility it would certainly be less risky.
>>
>> With commit 1bf4bbb4024dcdab5e57634dd8ae1072d42a53ac ('mac80211: send
>> control port protocol frames to the VO queue') now in
>> wireless-testing.git and tagged for stable, I'm planning on dropping
>> these wpa_supplicant/hostapd changes that use setsockopt() with the
>> special SO_PRIORITY values.
>
Regarding this mac80211 patch I am just curious what in such case

AP (UAPSD)   <-->   STA (AC: VO - default we have in mac80211)
STA go to PS
AP send EAP (VO) packet - we will not set PVB
STA will not wake-up ...

I am not sure about real word here - if vendors/mac80211 allow STA go
to PS during EAP exchange ...

BR
Janusz


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