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Thu, 21 Jan 2021 14:12:38 +0000 From: Slava Ovsiienko To: Alexander Kozyrev , "dev@dpdk.org" CC: "stable@dpdk.org" , Raslan Darawsheh , Matan Azrad Thread-Topic: [PATCH] net/mlx5: fix wrong Flow Tag decompression Thread-Index: AQHW6rzBM27daMMMB0yRcI00GoCX7qoyKVLg Date: Thu, 21 Jan 2021 14:12:38 +0000 Message-ID: References: <20210114213219.30593-1-akozyrev@nvidia.com> In-Reply-To: <20210114213219.30593-1-akozyrev@nvidia.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: nvidia.com; dkim=none (message not signed) header.d=none;nvidia.com; dmarc=none action=none header.from=nvidia.com; x-originating-ip: [188.163.75.192] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: b41b3bce-b1b3-4aef-6a17-08d8be169ba6 x-ms-traffictypediagnostic: DM5PR12MB1402: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:6430; x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; 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b=pVY8QJFJ4yKz1qWMt35M8u37085yMWKbGn8qw/GdzaK43w+QJR5U8FtYpAoAaqC24 o9oMUAjgk4wEduv1moGOySWsiu/Nh9TZ77V6SJWEjCb9AK9jw8TTqOTB7OD6e+l50o reDf1Dqh1dMoO+87RWo4m4Ap08Mvx+TX5EvcKCOCeVaVgsW3Yzh8ittfIE0fIIbasm HWQAtQqIXBopOhqG3rPlMJ+75/KglINRz8ywYTkyStJA+AenHYa4n+/A3BrE/Guxy1 af13B8OL7s4doygUD3C6dUr0SKDX0iIuvAEzpDU9bhfIq4B5j1DOayh2BngYivevRh qZ1yvsh9Px+Xg== Subject: Re: [dpdk-stable] [PATCH] net/mlx5: fix wrong Flow Tag decompression X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: stable-bounces@dpdk.org Sender: "stable" > -----Original Message----- > From: Alexander Kozyrev > Sent: Thursday, January 14, 2021 23:32 > To: dev@dpdk.org > Cc: stable@dpdk.org; Raslan Darawsheh ; Slava > Ovsiienko ; Matan Azrad > Subject: [PATCH] net/mlx5: fix wrong Flow Tag decompression >=20 > Packets can get a wrong Flow Tag on x86 architecture with the Flow Tag > compression format (rxq_cqe_comp_en=3D2) enabled inside the SSE Rx burst. > The shuffle mask that extracts a Flow Tag from the pair of compressed CQE= s is > reversed. This leads to the wrong Flow Tag assignment. > Correct the shuffle mask to get proper bytes for a Flow Tag from miniCQEs= . >=20 > Fixes: 54c2d46b160 ("net/mlx5: support flow tag and packet header > miniCQEs") > Cc: stable@dpdk.org >=20 > Signed-off-by: Alexander Kozyrev Acked-by: Viacheslav Ovsiienko