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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: DM4PR12MB5054.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 07b8f53b-29e8-4074-3826-08d952a3e10c X-MS-Exchange-CrossTenant-originalarrivaltime: 29 Jul 2021 15:16:45.7182 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: anKwyEfaKzbzVnEBqB/Xg0P85Bp3KMIh9TFv/gCBmqaB/B+zuHB7PnxnEFFiR41MBaY+fUrI6ZJr+iGlVkNjcg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB5231 Subject: Re: [dpdk-stable] [PATCH] net/mlx5: fix Tx queues creation type check for scheduling 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" Hi, > -----Original Message----- > From: Slava Ovsiienko > Sent: Thursday, July 29, 2021 3:27 PM > To: dev@dpdk.org > Cc: Raslan Darawsheh ; Matan Azrad > ; stable@dpdk.org > Subject: [PATCH] net/mlx5: fix Tx queues creation type check for scheduli= ng >=20 > The send scheduling on timestamp offload requires the Send > Queue (SQ) shares its User Access Region (UAR) with the > pacing Clock Queue. The SQ can be created by mlx5 PMD either > with DevX or with Verbs. If the SQ is being created with > DevX the dedicated UAR can be specified and all the SQs > share the single UAR. Once SQ is being created with Verbs > the SQ's UAR is allocated by the rdma-core library internally > on its own and there are no UAR sharing. This caused hardware > errors on WAIT WQEs and overall send scheduling malfunction. >=20 > If SQs are going to be created with Verbs and the send > scheduling offload is explicitly requested via tx_pp devarg > the device probing is rejected as device configuration > can't satisfy the requirements. >=20 > Fixes: 3ec73abeed52 ("net/mlx5/linux: fix Tx queue operations decision") > Fixes: 8f848f32fc24 ("net/mlx5: introduce send scheduling devargs") > Cc: stable@dpdk.org >=20 > Signed-off-by: Viacheslav Ovsiienko Patch applied to next-net-mlx, Kindest regards, Raslan Darawsheh