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([2620:15c:2c1:200:55c7:81e6:c7d8:94b]) by smtp.gmail.com with ESMTPSA id f9-v6sm749842pgt.79.2018.06.19.17.19.38 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 19 Jun 2018 17:19:38 -0700 (PDT) Subject: Re: [PATCH] Revert "net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends" To: Michael Ellerman , Eric Dumazet , Mathieu Malaterre , "David S. Miller" Cc: Eric Dumazet , linux-kernel@vger.kernel.org, netdev@vger.kernel.org References: <20180615185645.8921-1-malat@debian.org> <87muvqwc06.fsf@concordia.ellerman.id.au> From: Eric Dumazet Message-ID: <12e16d24-a2f5-33ef-1826-2371bc39a268@gmail.com> Date: Tue, 19 Jun 2018 17:19:38 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 MIME-Version: 1.0 In-Reply-To: <87muvqwc06.fsf@concordia.ellerman.id.au> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 06/19/2018 05:13 PM, Michael Ellerman wrote: > Just so I'm clear, this turned out to be a driver/hw problem rather than > the arch csum implementation? Yes, that was a driver bug. I will send an official patch to fix this. You guys will have faster RX, since CHECKSUM_COMPLETE will finally be used up to TCP/UDP stacks.