From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from wp530.webpack.hosteurope.de (wp530.webpack.hosteurope.de [80.237.130.52]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C4F35156F0 for ; Tue, 20 Jun 2023 14:16:22 +0000 (UTC) Received: from [2a02:8108:8980:2478:8cde:aa2c:f324:937e]; authenticated by wp530.webpack.hosteurope.de running ExIM with esmtpsa (TLS1.3:ECDHE_RSA_AES_128_GCM_SHA256:128) id 1qBc9c-0006w4-Hj; Tue, 20 Jun 2023 16:16:20 +0200 Message-ID: <19199830-33b6-2a4c-e08b-d1a76ce4c59b@leemhuis.info> Date: Tue, 20 Jun 2023 16:16:20 +0200 Precedence: bulk X-Mailing-List: regressions@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.12.0 Subject: Re: issues with cdc ncm host class driver Content-Language: en-US, de-DE From: "Linux regression tracking (Thorsten Leemhuis)" To: Oliver Neukum , "Purohit, Kaushal" , "stable@vger.kernel.org" Cc: "regressions@lists.linux.dev" , "linux-usb@vger.kernel.org" Reply-To: Linux regressions mailing list , Linux regressions mailing list References: <28ec4e65-647f-2567-fb7d-f656940d4e43@suse.com> In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-bounce-key: webpack.hosteurope.de;regressions@leemhuis.info;1687270582;bd39fb3c; X-HE-SMSGID: 1qBc9c-0006w4-Hj On 04.04.23 12:33, Linux regression tracking (Thorsten Leemhuis) wrote: > Side note: there is now a bug tracking ticket for this issue, too: > https://bugzilla.kernel.org/show_bug.cgi?id=217290 > > On 03.04.23 12:09, Oliver Neukum wrote: >> On 03.04.23 08:14, Purohit, Kaushal wrote: > >>> Referring to patch with commit ID >>> (*e10dcb1b6ba714243ad5a35a11b91cc14103a9a9*). >>> >>> This is a spec violation for CDC NCM class driver. Driver clearly says >>> the significance of network capabilities. (snapshot below) >>> >>> However, with the mentioned patch these values are disrespected and >>> commands specific to these capabilities are sent from the host >>> regardless of device' capabilities to handle them. >> >> Right. So for your device, the correct behavior would be to do >> nothing, wouldn't it? The packets would be delivered and the host >> needs to filter and discard unrequested packets. > > #regzbot ^introduced e10dcb1b6ba714243ad > https://bugzilla.kernel.org/show_bug.cgi?id=217290 > #regzbot from: Purohit, Kaushal > #regzbot title net: cdc_ncm: spec violation for CDC NCM > #regzbot ignore-activity Not sure what happen to this, my last inquiries were not answered, so it seems nobody cares anymore #regzbot inconclusive: radio silence, ignoring #regzbot ignore-activity Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat) -- Everything you wanna know about Linux kernel regression tracking: https://linux-regtracking.leemhuis.info/about/#tldr If I did something stupid, please tell me, as explained on that page.