linux-kernel - Re: [PATCH wireless 1/5] wifi: b43: Correct OpenFW QoS capability warning conditional

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date: Sat, 30 Dec 2023 17:17:40 +0000
From: Rahul Rameshbabu <sergeantsagara@...tonmail.com>
To: Michael Büsch <m@...s.ch>
Cc: Kalle Valo <kvalo@...nel.org>, linux-wireless@...r.kernel.org, b43-dev@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH wireless 1/5] wifi: b43: Correct OpenFW QoS capability warning conditional

On Sat, 30 Dec, 2023 14:34:55 +0100 Michael Büsch <m@...s.ch> wrote:
> [[PGP Signed Part:Undecided]]
> On Sat, 30 Dec 2023 04:51:29 +0000
> Rahul Rameshbabu <sergeantsagara@...tonmail.com> wrote:
>
>> Trigger the warning message should be when the OpenFW capability for QoS
>> does not advertise QoS support. Previously, the warning would be
>> incorrectly triggered when OpenFW reported QoS capability is present.
>
>> --- a/drivers/net/wireless/broadcom/b43/main.c
>> +++ b/drivers/net/wireless/broadcom/b43/main.c
>> @@ -2713,7 +2713,7 @@ static int b43_upload_microcode(struct b43_wldev *dev)
>>  			dev->hwcrypto_enabled = false;
>>  		}
>>  		/* adding QoS support should use an offline discovery mechanism */
>> -		WARN(fwcapa & B43_FWCAPA_QOS, "QoS in OpenFW not supported\n");
>> +		WARN(!(fwcapa & B43_FWCAPA_QOS), "QoS in OpenFW not supported\n");
>>  	} else {
>>  		b43info(dev->wl, "Loading firmware version %u.%u "
>>  			"(20%.2i-%.2i-%.2i %.2i:%.2i:%.2i)\n",
>
> I don't think this patch is correct.
> It should warn, if the firmware advertises QoS, because that is not
> supported by b43 in case of OpenFW.

Thanks. I had a hard time understanding the intention of this warning. I
figured it could be the case where the warning is about the driver
disabling QoS when firmware has support but was not sure. Will drop this
patch going forward.

--
Thanks,

Rahul Rameshbabu