> -----Original Message----- > From: Larry Finger [mailto:larry.finger@xxxxxxxxx] On Behalf Of Larry Finger > Sent: Monday, April 19, 2021 9:23 AM > To: Pkshih; Maciej S. Szmigiero > Cc: linux-wireless@xxxxxxxxxxxxxxx; netdev@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; > johannes@xxxxxxxxxxxxxxxx; kvalo@xxxxxxxxxxxxxx > Subject: Re: rtlwifi/rtl8192cu AP mode broken with PS STA > > On 4/18/21 7:32 PM, Pkshih wrote: > > > >> -----Original Message----- > >> From: Maciej S. Szmigiero [mailto:mail@xxxxxxxxxxxxxxxxxxxxx] > >> Sent: Sunday, April 18, 2021 2:08 AM > >> To: Pkshih > >> Cc: linux-wireless@xxxxxxxxxxxxxxx; netdev@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; > >> johannes@xxxxxxxxxxxxxxxx; kvalo@xxxxxxxxxxxxxx; Larry Finger > >> Subject: Re: rtlwifi/rtl8192cu AP mode broken with PS STA > >> > >> On 08.04.2021 21:04, Maciej S. Szmigiero wrote: > >>> On 08.04.2021 06:42, Pkshih wrote: > >>>>> -----Original Message----- > >>>>> From: Maciej S. Szmigiero [mailto:mail@xxxxxxxxxxxxxxxxxxxxx] > >>>>> Sent: Thursday, April 08, 2021 4:53 AM > >>>>> To: Larry Finger; Pkshih > >>>>> Cc: linux-wireless@xxxxxxxxxxxxxxx; netdev@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; > >>>>> johannes@xxxxxxxxxxxxxxxx; kvalo@xxxxxxxxxxxxxx > >>>>> Subject: Re: rtlwifi/rtl8192cu AP mode broken with PS STA > >>>>> > >>> (...) > >>>>>> Maceij, > >>>>>> > >>>>>> Does this patch fix the problem? > >>>>> > >>>>> The beacon seems to be updating now and STAs no longer get stuck in PS > >>>>> mode. > >>>>> Although sometimes (every 2-3 minutes with continuous 1s interval pings) > >>>>> there is around 5s delay in updating the transmitted beacon - don't know > >>>>> why, maybe the NIC hardware still has the old version in queue? > >>>> > >>>> Since USB device doesn't update every beacon, dtim_count isn't updated neither. > >>>> It leads STA doesn't awake properly. Please try to fix dtim_period=1 in > >>>> hostapd.conf, which tells STA awakes every beacon interval. > >>> > >>> The situation is the same with dtim_period=1. > >>> > >> (...) > >> > >> Ping-Ke, > >> are you going to submit your set_tim() patch so at least the AP mode is > >> usable with PS STAs or are you waiting for a solution to the delayed > >> beacon update issue? > >> > > > > I'm still trying to get a 8192cu, and then I can reproduce the symptom you > > met. However, I'm busy now; maybe I have free time two weeks later. > > > > Do you think I submit the set_tim() patch with your Reported-by and Tested-by first? > > PK, > > I would say yes. Get the fix in as soon as possible. > I have sent a patch that only 8192cu, which is the only one USB device supported by rtlwifi, schedules a work to update beacon content to wifi card. https://lore.kernel.org/linux-wireless/20210419065956.6085-1-pkshih@xxxxxxxxxxx/T/#u -- Ping-Ke
