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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: CH3PR12MB8460.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 854b6ccc-6d2e-40df-4961-08dd0df1ac42 X-MS-Exchange-CrossTenant-originalarrivaltime: 26 Nov 2024 08:09:38.4258 (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: PK4w4lBXnFVXQLMXRXckbaTR9TyiNUJuqGe833Loo8hnRFiQZWTNX8RhKczxHwUaIc3eBMu8v44t9Dq84jj++A== X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB4270 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 Hi,=0A= =0A= From: Bing Zhao =0A= Sent: Monday, November 25, 2024 7:23 PM=0A= To: Dariusz Sosnowski; Slava Ovsiienko; dev@dpdk.org; Raslan Darawsheh=0A= Cc: Ori Kam; Suanming Mou; Matan Azrad; stable@dpdk.org=0A= Subject: [PATCH] net/mlx5: fix Rx queue control deref=0A= =0A= When the Rx queue is shared, only the control structure is shared and=0A= the private structure of each Rx queue is still independent. During=0A= the port stop stage, the hardware resource will be released, and the=0A= memory will be freed in the device close stage. Then the control=0A= structure reference count should be decreased when freeing a private=0A= structure.=0A= =0A= In the previous implementation, the decreasing action was wrongly=0A= put inside the owners list empty condition. Indeed, they should be=0A= in the same level. And since the reference count was set to 1 after=0A= the 1st queue is created, when checking the value, it should be=0A= subtracted firstly and then check the value.=0A= =0A= With this commit, the reference calculation and condition checking=0A= will be corrected. The shared Rx queues' control structures will be=0A= freed successlly to avoid the crash in the port restarting.=0A= =0A= Fixes: 3c9a82fa6edc ("net/mlx5: fix Rx queue control management")=0A= Cc: stable@dpdk.org=0A= =0A= Signed-off-by: Bing Zhao =0A= Acked-by: Dariusz Sosnowski =0A= =0A= Patch applied to next-net-mlx,=0A= =0A= Kindest regards,=0A= Raslan Darawsheh=0A= =0A= =0A=