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From:   Gabriel Tisan <gabriel.tisan@gmail.com>
Date:   Sun, 30 Apr 2023 12:30:28 +0200
Message-ID: <CAD9ZU8Ati86h0kzxuoSM0js31-rqShv7UNFZSVGE6jcykKsZvQ@mail.gmail.com>
Subject: Re: rtw88: 8822cu (LM842) --> LOWER_UP link messages
To:     Larry Finger <Larry.Finger@lwfinger.net>
Cc:     linux-wireless@vger.kernel.org
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Actually the connection is not dropped. That is the problem : the
message LOWER_UP is coming although the connection is not dropped.

I suppose that LOWER_UP notification is send wrong by the driver.

In the log nothing comes.
I tried to increase log level, but I didn't find any /proc/rtw88.
I have debug activated:
CONFIG_RTW88_DEBUG=3Dy
CONFIG_RTW88_DEBUGFS=3Dy

On Fri, Apr 28, 2023 at 9:28=E2=80=AFPM Larry Finger <Larry.Finger@lwfinger=
.net> wrote:
>
> On 4/28/23 08:56, Gabriel Tisan wrote:
> > Hi !
> >
> > I use a LM842 wifi stick on a Linux kernel 5.15 with last patches for
> > rtw88 from linux-next applied.
> > Firmware version is 9.9.15
> >
> > When I connect LM842 as a station to an AP, after the link is up first
> > time, it comes from time to time more LOWER_UP message.
> > The stick is plugged and the connection to AP is still valid.
> >
> > # ip -oneline -family inet monitor link
> >
> > 5: wlan0: <BROADCAST,MULTICAST> mtu 1500 qdisc noqueue state DOWN
> > group default \    link/ether 34:c9:f0:99:b6:a1 brd ff:ff:ff:ff:ff:ff
> >
> > 5: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue
> > state DOWN group default \    link/ether 34:c9:f0:99:b6:a1 brd
> > ff:ff:ff:ff:ff:ff
> >
> > 5: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue
> > state DOWN group default \    link/ether 34:c9:f0:99:b6:a1 brd
> > ff:ff:ff:ff:ff:ff
> >
> > 5: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> \    link/ether
> >
> > 5: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
> > noqueue state DORMANT group default \    link/ether 34:c9:f0:99:b6:a1
> > brd ff:ff:ff:ff:ff:ff
> >
> > 5: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> \    link/ether
> >
> > 5: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> \    link/ether
> >
> > 5: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> \    link/ether
> >
> > 5: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue
> > state UP group default \    link/ether 34:c9:f0:99:b6:a1 brd
> > ff:ff:ff:ff:ff:ff
> >
> >
> >
> > 5: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> \    link/ether
> >
> > 5: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> \    link/ether
> >
> > 5: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> \    link/ether
> >
> > 5: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> \    link/ether
> >
> > 5: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> \    link/ether
> >
> > 5: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> \    link/ether
> >
> >
> >
> >
> >
> > Any idea what I can do ?
> >
> > Did someone also reproduce that problem ?
>
> No, I do not see that problem. When I run your command, I get
>
> finger@localhost:~/rtw88>ip -oneline -family inet monitor link
> 12: wlp0s20u6i2: <BROADCAST,MULTICAST,UP,LOWER_UP> \    link/ether
> 12: wlp0s20u6i2: <BROADCAST,MULTICAST,UP,LOWER_UP> \    link/ether
> 12: wlp0s20u6i2: <BROADCAST,MULTICAST,UP,LOWER_UP> \    link/ether
>
> My connection is very stable; however, my device is an 8822BU, not an 882=
2CU.
>
> When the connection is dropped, what is logged? You can see that with a '=
sudo
> dmesg | less' command.
>
> Larry
>
>