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Thu, 26 Mar 2020 18:27:08 +0000 From: "Benoit Ganne (bganne)" To: Stephen Hemminger CC: "users@dpdk.org" , Thomas Monjalon Thread-Topic: [dpdk-users] CX4-Lx VF link status in Azure Thread-Index: AdYC1mshRkrwi7+yQ7SC7hJxVHlhAgAIQ0GAAB6bQgAACYtEgAAAxI9g Date: Thu, 26 Mar 2020 18:27:08 +0000 Message-ID: References: <20200325154815.13fc7a4e@hermes.lan> <20200326105753.5d1a7e05@hermes.lan> In-Reply-To: <20200326105753.5d1a7e05@hermes.lan> 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=bganne@cisco.com; x-originating-ip: [92.154.90.183] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 7c0661ce-8b3a-4ef1-22a6-08d7d1b34b38 x-ms-traffictypediagnostic: CH2PR11MB4328: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:8882; x-forefront-prvs: 0354B4BED2 x-forefront-antispam-report: SFV:NSPM; SFS:(10009020)(4636009)(346002)(376002)(366004)(396003)(136003)(39860400002)(316002)(81166006)(81156014)(33656002)(86362001)(55016002)(186003)(478600001)(71200400001)(26005)(8676002)(8936002)(6506007)(54906003)(6916009)(966005)(76116006)(2906002)(7696005)(66476007)(4744005)(9686003)(66946007)(4326008)(5660300002)(66446008)(52536014)(66556008)(64756008); 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: 7c0661ce-8b3a-4ef1-22a6-08d7d1b34b38 X-MS-Exchange-CrossTenant-originalarrivaltime: 26 Mar 2020 18:27:08.6396 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 5ae1af62-9505-4097-a69a-c1553ef7840e X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: bksIXXSTZlruS+N6dsbWXKk/baNWju/M/oFU8UUFsWJ7NW0q7I5Q7rukBxTPy/bBW8AlDU4r2Vs4/L7s3XswGQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH2PR11MB4328 X-OriginatorOrg: cisco.com X-Outbound-SMTP-Client: 173.37.102.15, xch-rcd-005.cisco.com X-Outbound-Node: alln-core-12.cisco.com Subject: Re: [dpdk-users] CX4-Lx VF link status in Azure X-BeenThere: users@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK usage discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: users-bounces@dpdk.org Sender: "users" > Is the Mellanox device being brought up by the base kernel setup? > I find that for Mellanox the device has to be started from kernel (like > ip) and DPDK doesn't do itself. Yes everything is initialized correctly. The netdev itself is configured an= d usable from Linux (ping etc.). Just removing the over-strict check in mlx= 5 PMD is enough for everything to work fine: https://gerrit.fd.io/r/c/vpp/+= /26152/1/build/external/patches/dpdk_20.02/0002-mlx5-azure-workaround.patch The link speed is unknown but this is not issue, and link state and other l= ink info are correctly reported. Thomas, any input regarding this behavior in mlx5 PMD? Thx ben