From owner-freebsd-hackers@freebsd.org Wed Nov 4 06:36:50 2020 Return-Path: Delivered-To: freebsd-hackers@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 44D3945283B; Wed, 4 Nov 2020 06:36:50 +0000 (UTC) (envelope-from carbaecker@gmx.de) Received: from mout.gmx.net (mout.gmx.net [212.227.15.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "mout.gmx.net", Issuer "TeleSec ServerPass Class 2 CA" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4CQxl52Mjmz4Js4; Wed, 4 Nov 2020 06:36:48 +0000 (UTC) (envelope-from carbaecker@gmx.de) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1604471806; bh=uFkcaMWwvRbtq0yolrsH/akSHbmxOHCVinz9rM6fO6Y=; h=X-UI-Sender-Class:Subject:To:Cc:References:From:Date:In-Reply-To; b=ITeMeXMmFD1JMk1uJ5udVmMkf8p1TSGjIA0Fi7ldrTVfApF80Zx6jCihN3S9KYMwy CA5m/IKWR6FfbjnmxBAkm52rIfUqSVVgYLjx1YGfrEYj8eO3wWCiEQcrhh90sH/zlN 5Eh0OuKg6D4g8CfemgE3d8Jll3BT5YvoBp1ncZn0= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from [192.168.178.30] ([94.31.96.148]) by mail.gmx.com (mrgmx005 [212.227.17.190]) with ESMTPSA (Nemesis) id 1N7QxL-1kHtC708K5-017kbB; Wed, 04 Nov 2020 07:36:46 +0100 Subject: Re: Problem with checksum offloading on RPi3 (PF + Jails involved) To: Hans Petter Selasky , YongHyeon PYUN , Kristof Provost Cc: freebsd-arm@freebsd.org, freebsd-hackers@freebsd.org References: <748edc3d-4ef7-c4de-291f-7c0b460a6052@gmx.de> <5130ee46-5832-d4df-d774-c6bd32e10b30@gmx.de> <20201029213622.GM31099@funkthat.com> <55713894-A896-4F12-ABB9-93DFEB2F16B9@FreeBSD.org> <20201103045215.GA2524@michelle> <46d08198-530c-cb4b-efa8-4edaf89471c1@selasky.org> <4dfaa9a3-c085-8466-a6e4-19f988b5ed3d@selasky.org> From: =?UTF-8?Q?Carsten_B=c3=a4cker?= Message-ID: Date: Wed, 4 Nov 2020 07:36:44 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; 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TO_MATCH_ENVRCPT_SOME(0.00)[]; RWL_MAILSPIKE_POSSIBLE(0.00)[212.227.15.18:from]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[]; MAILMAN_DEST(0.00)[freebsd-arm,freebsd-hackers] Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.33 X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 04 Nov 2020 06:36:50 -0000 Am 03.11.2020 um 09:46 schrieb Hans Petter Selasky: > On 2020-11-03 09:19, Hans Petter Selasky wrote: >> It looks like smsc(4) uses the following RX format but I don't >> know actual RX format of H/W(no access to datasheet). >> >> <---------------------------- actlen >> --------------------------------------------------> >> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0 <------------- pktlen ------------------------= > >> rxhdr(4 bytes) | padding (2 bytes) | RX frame | FCS(4 bytes) | >> partial checksum(2 bytes) > > Hi, > > I wonder if the checksum is zero, when not valid, and that we should > check for this in the driver! > > Can you try this patch? > > Also enabling debugging in the SMSC driver would be useful. > > --HPS > > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.or= g" Hi, i applied the patch on -CURRENT but got a panic right after loading the kernel. Most likely an unrelated problem. But i was able to apply the patch on releng/12.2 (with an offset). Unfortunately it doesn't change the previously described behavior with rxcsum and i didn't manage to get any reasonable debug-output. Since i can easily reproduce the problem. How else can i help? Regards, Carsten