On 2019-03-18 10:50, Stanislaw Gruszka wrote: > On Sat, Mar 16, 2019 at 08:44:21PM +0100, Felix Fietkau wrote: >> On 2019-03-04 10:48, Stanislaw Gruszka wrote: >> > Program beacons data and PS buffered frames on TBTT work for USB. >> > We do not have MT_TXQ_PSD queue available via USB endpoints. The way >> > we can send PS broadcast frames in timely manner before PS stations go >> > sleep again is program them in beacon data area. Hardware do not modify >> > those frames since TXWI is properly configured. mt76x02_mac_set_beacon() >> > already handle this and free no longer used frames. >> > >> > Signed-off-by: Stanislaw Gruszka <[email protected]> >> I think it's a nice idea, but there is one problem with that approach: >> beacon slots only have 1024 bytes for TXWI + data. >> I think to support this properly, you probably need to adjust beacon >> offsets for USB dynamically and limit the number of frames to what you >> can fit in SRAM. > That would be good since we could sent more buffered frames (ARP frames > are small), but for now I would prefer simpler solution to enable > AP support for USB: increase slot size to 1600 and make only 5 slots > available. Then you should probably limit the number of AP interfaces for USB as well. Otherwise, people are going to do crazy things like bring up 4 virtual AP interfaces and expect multicast to work :)
- Felix
