From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from EUR02-VE1-obe.outbound.protection.outlook.com (mail-eopbgr20040.outbound.protection.outlook.com [40.107.2.40]) by dpdk.org (Postfix) with ESMTP id 8CD2D4C90; Thu, 7 Mar 2019 09:38:41 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Mellanox.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=03LwGsKUk3jHUihwxhqSWDIA3bQfk4ZdoPCjh5iYwj8=; b=KLzY2sp9apcffgUmUvhpqGmQtjOjKIM6cpGH6+yuQea9ZvATfukJJqCFQz4zRsRjN3g1OPT0SZEqH9aEP15rZS4jnhpyOKw/Zmo3zbVCTUE4tHVewt2+lpWp/oCKsD6rOi19qfqZpUKW/aIwBHsEiSSuroHCNtQz+AoDVCzUpiE= Received: from AM0PR0502MB3795.eurprd05.prod.outlook.com (52.133.45.150) by AM0PR0502MB3921.eurprd05.prod.outlook.com (52.133.43.160) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1686.18; Thu, 7 Mar 2019 08:38:40 +0000 Received: from AM0PR0502MB3795.eurprd05.prod.outlook.com ([fe80::84f3:7e92:7a51:1003]) by AM0PR0502MB3795.eurprd05.prod.outlook.com ([fe80::84f3:7e92:7a51:1003%2]) with mapi id 15.20.1686.018; Thu, 7 Mar 2019 08:38:40 +0000 From: Shahaf Shuler To: Dekel Peled , Yongseok Koh CC: "dev@dpdk.org" , Ori Kam , Dekel Peled , "stable@dpdk.org" Thread-Topic: [dpdk-dev] [PATCH] net/mlx5: fix sync when handling Tx completions Thread-Index: AQHUz3lsZl9MqyBtD02aAPGjI1g1rKX/4z7w Date: Thu, 7 Mar 2019 08:38:40 +0000 Message-ID: References: <1551367230-38039-1-git-send-email-dekelp@mellanox.com> In-Reply-To: <1551367230-38039-1-git-send-email-dekelp@mellanox.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=shahafs@mellanox.com; x-originating-ip: [193.47.165.251] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: c9256f96-8e64-4d1c-89b6-08d6a2d84ce5 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0; PCL:0; RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600127)(711020)(4605104)(4618075)(2017052603328)(7153060)(7193020); SRVR:AM0PR0502MB3921; x-ms-traffictypediagnostic: AM0PR0502MB3921: x-microsoft-exchange-diagnostics: =?us-ascii?Q?1; AM0PR0502MB3921; 23:i0HU4coRcslnVa3mi23pW3ZHnySa3MyQeVxSbD5?= =?us-ascii?Q?EVKQJir30qHSNnDi5sEOeb+57jqQ1W3qFlwVP3icVZ6ZWs5/1f+ZV4w+X2MI?= =?us-ascii?Q?w8bH335PzkbPLjFl2pQNu3EuZU984IRvdon6/bQBspEXcYybYMvumcZ6zSCA?= =?us-ascii?Q?Pfbg8py8Zqbd8SKYXiK8tuV8CJT8lDryLW6qaXdqxuPKfzrtkUuD4BeZPJUV?= =?us-ascii?Q?lzVKvw5rkffqwT+RJgzw3dcYuC6CuLEruO40EpSvmpCebNpKGPm4tSIzsUJe?= =?us-ascii?Q?OSlXuXkbnlgbAR8yQSfHvbXvE54fLl7AFOSafNqcACAH621tKR6IQZmZs5UC?= =?us-ascii?Q?tDU+hjkb7UaL8hQ4Z0yoorUqkstP57gimOL56JRliiTIOOD7uetQVpeuryyF?= =?us-ascii?Q?p4qDHGrcttW6PTt71aHhJicPTaMGv8+xThPCboODrHDsB3nTOovfYOoLQ1al?= =?us-ascii?Q?gVxqO3a781Hd8VdeIN4JYThM3iJwa/9UGurMTPsk83egL1vOrhUYjUSgFGD2?= =?us-ascii?Q?8nWij5x/azjPmWZYgP2f6AyjhcikFEbPa1N4Lx06PmIRRed52g+tlw5c973R?= =?us-ascii?Q?Si6uJXCgpStHmZOmK8G/wqNb32vy34wL2JYlBnVKgDH/iLw5JYQQvMl2ttF2?= =?us-ascii?Q?LgFdWvkFwmZhbrsJLTHAL71rWLs0FISo+O6LlNgoVVYtJvstc1N/Pnr5tdMS?= =?us-ascii?Q?u1MQ2w8GRxNtYQCXULonMifBrPWh40KBbp6ogUuc5ap/Kheizf64dksS5DNH?= =?us-ascii?Q?+E16CpMIK75SQ4EHL4mDI7bOCx/HOtS/j99Kq/fV82xOP1bJHDlkBCwS474K?= =?us-ascii?Q?JN3eGab0pCwXnY+HO79DqdLg3Ogm1p26qQ8iKKKbuFuhSTBG+oiAYB0XiwZJ?= =?us-ascii?Q?ZFWtJy97yd8+8nGTBUzGLiMyHGqdtlTGxdrlaR6AEy5t/v7djQjo79RDuzfP?= =?us-ascii?Q?y1LDtCmBRmvugC3xLU8InaUy5b8gXL+Y3DB982X9b2fAf23XftiNfXi4rm8h?= =?us-ascii?Q?hSCyVBNVTiDtNlB491zMfpkeQ5WrbBzeHyRxa2TPDqF/HcGSUn/a9Go1GA0B?= =?us-ascii?Q?Issx7KyBMAC6qaX0pcjkmRviIAiWtXK6MphL/xxdjPgAVFXZHLbdsE/NeJDC?= =?us-ascii?Q?S713lWtGo0X77V0YooPegyHdF19pkiDQxb5Z4PaLqiEnl2iUuMrJLBrG9YLX?= =?us-ascii?Q?qaO80aHym1GMtw/Tyg/3SzoXK9ojt1H57wrlFbesx6hOBbTyAI/s9Wu6T6s1?= =?us-ascii?Q?GF8PEcvL0dHuiK65yDKFubF7L60PXrrGTmRr7+1gxA9NKuU6kP6gSLG0/c3x?= =?us-ascii?Q?PzQ=3D=3D?= x-microsoft-antispam-prvs: x-forefront-prvs: 096943F07A x-forefront-antispam-report: SFV:NSPM; SFS:(10009020)(376002)(39860400002)(136003)(396003)(346002)(366004)(189003)(199004)(66066001)(8936002)(6506007)(76176011)(99286004)(7696005)(97736004)(33656002)(110136005)(478600001)(229853002)(305945005)(7736002)(55016002)(316002)(25786009)(54906003)(450100002)(53936002)(2906002)(106356001)(6436002)(105586002)(4326008)(102836004)(26005)(71200400001)(71190400001)(9686003)(3846002)(6116002)(186003)(6246003)(86362001)(81166006)(5660300002)(14454004)(81156014)(14444005)(6636002)(4744005)(486006)(74316002)(8676002)(11346002)(446003)(68736007)(52536013)(476003)(256004); DIR:OUT; SFP:1101; SCL:1; SRVR:AM0PR0502MB3921; H:AM0PR0502MB3795.eurprd05.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; MX:1; A:1; received-spf: None (protection.outlook.com: mellanox.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: zDe3n/wDeIUCW/e/sK9RHTh0DsPH2jS+9j2yZ/Hc9DQ7mgpi7zc0lyA4+mBMsRvq9F1U6BObwXyAYF1hwA7A9B144PunVNPut3Ve81DIiU8Ws6fGeThGy+njOLU3cZ5y3qBiS5Ert/j6MCWDaQniM88or/THXAXFDD5k8UmKDMDjfNJ1uol1Vb5MLUecPP8mUBRyz5S3sIKAnah9T0tuJyHRAn1W+HCvA0NLjVbZD3SsOBbh9IGJe57iXc7RNfEoZbR9Zq35/hF2mYPV1mlozoBT5O1sAM3DNdCD4HOapeVav1koAW+QwaCpyeCKR/9Ym76kV3urtoC7PEZd7z6EbFnKdBeM3bM0RBvDi6Kf8LH6+fMkpcPMEjMqJLfmAgch1sa4N7k1gJ4Kyq3d1PsUXstaHEfwbuQ5Mn2GsVcCXps= Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: Mellanox.com X-MS-Exchange-CrossTenant-Network-Message-Id: c9256f96-8e64-4d1c-89b6-08d6a2d84ce5 X-MS-Exchange-CrossTenant-originalarrivaltime: 07 Mar 2019 08:38:40.4919 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: a652971c-7d2e-4d9b-a6a4-d149256f461b X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR0502MB3921 Subject: Re: [dpdk-stable] [dpdk-dev] [PATCH] net/mlx5: fix sync when handling Tx completions X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 07 Mar 2019 08:38:41 -0000 Thursday, February 28, 2019 5:21 PM, Dekel Peled: > Subject: [dpdk-dev] [PATCH] net/mlx5: fix sync when handling Tx > completions >=20 > Function mlx5_tx_complete() reads completion entry information from Tx > queue. > For some processors not having strongly-ordered memory model, there has > to be a memory barrier between reading the entry index and the entry > fields, in order to guarantee data is valid. >=20 > Fixes: 54d3fe948dba ("net/mlx5: poll completion queue once per a call") > Cc: stable@dpdk.org >=20 > Signed-off-by: Dekel Peled Applied to next-net-mlx, thanks.=20