From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 1D7FA207A09; Tue, 13 Jan 2026 00:16:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768263400; cv=none; b=lGtzcTO9sUvRV5GRZ7IMisqC9+4DRLwTDT7LAfrr+75kxjhCceGhVQBqEqzLUbuvLAWS653p4kYSW8pY+hQmUiSU13Ct0/bWzUOnlIZpaCjmQSycfpl56EZR7IY6O6nh7ATO1xCnUDax1nAVI+iMcLTPBZHDpaUml4+t1uX4mvY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768263400; c=relaxed/simple; bh=vdgFt7gSlg6ggrH6DgKL7XYQH5crGDTqbC6FP+yfTt0=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=ArIZyMYrvAv+lo/ONxjz3msWXynM7J60grz1PJ0p8/ZEZMorU4MD80QgqUAB5LrvylpNKHUH/XdfZiGOMknp9/tYIMNt1CtHAfT9Jvn3sm40de5hZ0oLMaiBa9GiNJ6VWa7wBy8hIjfitMkiFKh3RMD+qC48EHBZefTPOUPck8g= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=fH68Opfv; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="fH68Opfv" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1F5E5C116D0; Tue, 13 Jan 2026 00:16:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1768263399; bh=vdgFt7gSlg6ggrH6DgKL7XYQH5crGDTqbC6FP+yfTt0=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=fH68OpfvcQ8hrS2GE06M00HWTGys+qDdrNokEiVWsbsWdrOTiECTBTOFZwGuDYU3c VMr5bumV/Ov3mNIHfmGLsw0epUTRKxOAp+onAxlErOYxt6kOcS09DezNtcmNX6oNqQ 0QsaGxwNSaOiTshoW8NvLBd+lwDIymf7a16CP3aKpYGravuiljT9EMa6z10F8nY9Bt zzn0WdUkyVt+FW4WM3HDzJKNmwToG7lBbdVoIbcF9/c3eyF895AFndMzofEpUK0fxr 0ln8Js030UoUxLxsHM90l5XCBm9Qd410ClzXCYLtCIinoYxMeBfWVpCX2+poMxpUB9 vpHRzazyalfNg== Date: Mon, 12 Jan 2026 16:16:38 -0800 From: Jakub Kicinski To: Willem de Bruijn Cc: davem@davemloft.net, netdev@vger.kernel.org, edumazet@google.com, pabeni@redhat.com, andrew+netdev@lunn.ch, horms@kernel.org, shuah@kernel.org, linux-kselftest@vger.kernel.org, sdf@fomichev.me, willemb@google.com, petrm@nvidia.com Subject: Re: [PATCH net-next v2 6/6] selftests: drv-net: gro: break out all individual test cases Message-ID: <20260112161638.3e4f361a@kernel.org> In-Reply-To: References: <20260110005121.3561437-1-kuba@kernel.org> <20260110005121.3561437-7-kuba@kernel.org> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Sun, 11 Jan 2026 12:12:09 -0500 Willem de Bruijn wrote: > Interesting that many devices do seem to fail some tests. The case that convinced me to do this was TCP option handling. Older Broadcom NICs appear to coalesce mismatched timestamps. I suppose it may be related to the Microsoft sec which seems to recommend coalescing incrementing timestamps like seq no :|