netdev - RE: [PATCH v3 00/11] RTW88: Add support for USB variants

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Date:   Thu, 24 Nov 2022 08:26:23 +0000
From:   Ping-Ke Shih <pkshih@...ltek.com>
To:     Sascha Hauer <s.hauer@...gutronix.de>
CC:     Bernie Huang <phhuang@...ltek.com>,
        "linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
        Hans Ulli Kroll <linux@...i-kroll.de>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Kalle Valo <kvalo@...nel.org>,
        Yan-Hsuan Chuang <tony0620emma@...il.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Viktor Petrenko" <g0000ga@...il.com>, Neo Jou <neojou@...il.com>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        Johannes Berg <johannes@...solutions.net>,
        Alexander Hochbaum <alex@...udo.com>,
        Da Xue <da@...re.computer>
Subject: RE: [PATCH v3 00/11] RTW88: Add support for USB variants



> -----Original Message-----
> From: Sascha Hauer <s.hauer@...gutronix.de>
> Sent: Thursday, November 24, 2022 4:22 PM
> To: Ping-Ke Shih <pkshih@...ltek.com>
> Cc: Bernie Huang <phhuang@...ltek.com>; linux-wireless@...r.kernel.org; Hans Ulli Kroll
> <linux@...i-kroll.de>; Martin Blumenstingl <martin.blumenstingl@...glemail.com>; netdev@...r.kernel.org;
> Kalle Valo <kvalo@...nel.org>; Yan-Hsuan Chuang <tony0620emma@...il.com>; linux-kernel@...r.kernel.org;
> Viktor Petrenko <g0000ga@...il.com>; Neo Jou <neojou@...il.com>; kernel@...gutronix.de; Johannes Berg
> <johannes@...solutions.net>; Alexander Hochbaum <alex@...udo.com>; Da Xue <da@...re.computer>
> Subject: Re: [PATCH v3 00/11] RTW88: Add support for USB variants
> 
> On Thu, Nov 24, 2022 at 06:48:23AM +0000, Ping-Ke Shih wrote:
> >
> > > -----Original Message-----
> > > From: Sascha Hauer <s.hauer@...gutronix.de>
> > > Sent: Tuesday, November 22, 2022 10:55 PM
> > > To: Bernie Huang <phhuang@...ltek.com>
> > > Cc: linux-wireless@...r.kernel.org; Ping-Ke Shih <pkshih@...ltek.com>; Hans Ulli Kroll
> > > <linux@...i-kroll.de>; Martin Blumenstingl <martin.blumenstingl@...glemail.com>;
> netdev@...r.kernel.org;
> > > Kalle Valo <kvalo@...nel.org>; Yan-Hsuan Chuang <tony0620emma@...il.com>;
> linux-kernel@...r.kernel.org;
> > > Viktor Petrenko <g0000ga@...il.com>; Neo Jou <neojou@...il.com>; Bernie Huang <phhuang@...ltek.com>;
> > > kernel@...gutronix.de; Johannes Berg <johannes@...solutions.net>; Alexander Hochbaum
> <alex@...udo.com>;
> > > Da Xue <da@...re.computer>
> > > Subject: Re: [PATCH v3 00/11] RTW88: Add support for USB variants
> > >
> > > On Tue, Nov 22, 2022 at 03:52:15PM +0100, Sascha Hauer wrote:
> > > > This is the third round of adding support for the USB variants to the
> > > > RTW88 driver. There are a few changes to the last version which make it
> > > > worth looking at this version.
> > > >
> > > > First of all RTL8723du and RTL8821cu are tested working now. The issue
> > > > here was that the txdesc checksum calculation was wrong. I found the
> > > > correct calculation in various downstream drivers found on github.
> > > >
> > > > The second big issue was that TX packet aggregation was wrong. When
> > > > aggregating packets each packet start has to be aligned to eight bytes.
> > > > The necessary alignment was added to the total URB length before
> > > > checking if there is another packet to aggregate, so the URB length
> > > > included that padding after the last packet, which is wrong.  Fixing
> > > > this makes the driver work much more reliably.
> > > >
> > > > I added all people to Cc: who showed interest in this driver and I want
> > > > to welcome you for testing and reviewing.
> > >
> > > There still is a problem with the RTL8822cu chipset I have here.  When
> > > using NetworkManager I immediately lose the connection to the AP after
> > > it has been connected:
> > >
> > > [  376.213846] wlan0: authenticate with 76:83:c2:ce:81:b1
> > > [  380.085463] wlan0: send auth to 76:83:c2:ce:81:b1 (try 1/3)
> > > [  380.091446] wlan0: authenticated
> > > [  380.108864] wlan0: associate with 76:83:c2:ce:81:b1 (try 1/3)
> > > [  380.136448] wlan0: RX AssocResp from 76:83:c2:ce:81:b1 (capab=0x1411 status=0 aid=2)
> > > [  380.202955] wlan0: associated
> > > [  380.268140] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
> > > [  380.275328] wlan0: Connection to AP 76:83:c2:ce:81:b1 lost
> > >
> > > That doesn't happen when using plain wpa_supplicant. This seems to go
> > > down to cd96e22bc1da ("rtw88: add beacon filter support"). After being
> > > connected I get a BCN_FILTER_CONNECTION_LOSS beacon. Plain
> > > wpa_supplicant seems to go another code patch and doesn't activate
> > > connection quality monitoring.
> > >
> > > The connection to the AP works fluently also with NetworkManager though
> > > when I just ignore the BCN_FILTER_CONNECTION_LOSS beacon.
> > >
> > > Any idea what may be wrong here?
> > >
> >
> > Please reference to below patch to see if it can work to you.
> >
> > https://lore.kernel.org/linux-wireless/20221124064442.28042-1-pkshih@realtek.com/T/#u
> 
> Great! That solves this issue \o/
> 

Do you mind to add "Tested-by:" tag to the patch?  :-)

Ping-Ke