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Wed, 26 Nov 2025 11:35:56 -0800 From: Daniel Jurgens To: , , , CC: , , , , , , , , , , , "Daniel Jurgens" Subject: [PATCH net-next v13 02/12] virtio: Add config_op for admin commands Date: Wed, 26 Nov 2025 13:35:29 -0600 Message-ID: <20251126193539.7791-3-danielj@nvidia.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20251126193539.7791-1-danielj@nvidia.com> References: <20251126193539.7791-1-danielj@nvidia.com> Precedence: bulk X-Mailing-List: virtualization@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH2PEPF00000142:EE_|BY5PR12MB4132:EE_ X-MS-Office365-Filtering-Correlation-Id: 4a01eec4-fcd4-4007-c228-08de2d230f6c X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|1800799024|36860700013|376014|7416014; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?XafPq98/2g2rr5aQpofU6ANYQO9tstlt1f9vmEArF352kHHlwctOI07yfPwY?= =?us-ascii?Q?6CkDinLoa8lD2WDuKuTBX3SYDm32C5dZLvEmtvNLhg5Oza+00efge3EKwtCr?= =?us-ascii?Q?Fb11ssWBJDZOLBAtk+fShsz2OqA1SxMNy3rHxqN8ofumDO6FPKS/I60bejtX?= =?us-ascii?Q?GnSHDmiQNOp8gx63yuEO+qNRE9WaghnrZyKvNyK77WeCZuru8GOT0tGoEM6F?= =?us-ascii?Q?YH4iRuGOgxK7HTSqzSGiHXdvtux17BoyuiwLhQB/bOuAJxk3XQ1Kr3rdL4Mu?= =?us-ascii?Q?w/MDoruA7qfsxI8suhAQGIXB5m8s5McW5hVP37vBrXKAXr+ucCTLdYLwm5Xj?= =?us-ascii?Q?WaoIBCdZDoEN7vpkTZHUxJx0q7JE+f8dzalNPcO5G65YsnO3ASYw6xs3fHk1?= =?us-ascii?Q?xVhnzjSOCa1vf5ULu+uE+QjS055lhy0IgxTrkaZkxTaxdctAGoz9K1ueB8D/?= =?us-ascii?Q?4YCVvDBZ5uE59wpw6hBzFbvlb60Fd4G6qi3FZogCkaLLYIDIqi7zjANYr6uK?= =?us-ascii?Q?HJ71gR7puUJMkjGHqO5SMhhM7+55VB4sqqB7v3QYdZlcfBBHmPTQsdBuL4Bn?= =?us-ascii?Q?ZTv3qeiWW+O//bczKAvo5mIBVETv1FFy8pOSQfih9jjpUIrDZurrB+n58dF8?= =?us-ascii?Q?dWOXWF9rB6DC+ibfjCtCcLthGInc5ayHOqEul4KbRdaPEvrLx9B3kQggBwE1?= =?us-ascii?Q?gGOArtHJjWnMyzXK+aHLc3QgzyMX8Uh1sazAUemJ1mxOGwg+O0xGmkclCu/5?= =?us-ascii?Q?71m7/y9p/Xusbu8Lc0WYIwQyr+kD1kUUsh9f/MhisJRIMeyiSUHgy2NT2jR8?= =?us-ascii?Q?4nFfcdqCHsQXisDAWsPAp1WlHNxHx6koHsbFDj/uFvizAW/zXsJk/6vNlTGX?= =?us-ascii?Q?GQjWwwe3Nv1nlFwJZ1A1eiRZWtHgfg6B4o9NxHi8MovHtLwj8xqnmWFQ09m3?= =?us-ascii?Q?aTnzJP/3XKpbClN3vFmwW+N0P2VyJe4armGgLpHcaXFpuVVRf3pE1q1CM5h0?= =?us-ascii?Q?Ucq2A6I4IVcWc/i0pWgxDKmQ89ADQ27Cb6FGhME2FS+xd75F3/n8Z6otMlJU?= =?us-ascii?Q?Ikp72sD9UVeyqhG8QBtgUBZS7nNJM+pIspjngpltqMPksI/JjqG6i2vsAsnV?= =?us-ascii?Q?g49xcLaoOnKjjzf8HDUSTRqI5M56b/BtCTRQvqt1rcvRtv2hVZ7ndBuNR0KK?= =?us-ascii?Q?D9lYHXSK2kG8L1P+ooVH1Vi17dRPUKu/lUA9WgKmplUmmnc6dYKYqlYQyl22?= =?us-ascii?Q?IpwH4GRLS9OBTqWdpk0oYq7nuz5AzUig6WSkt4cXjbXvJgoJGdomicM1TdBN?= =?us-ascii?Q?4rZmXhyAkd3miF2JQIr4T+U6pOGCnbQkhpfqvcTqsGvlmpFyAvP7e7gcWPxU?= =?us-ascii?Q?+tLw7hqJhdq1st6Kq99B/yu2D67Wu8ZWzDp44IvDMJ95QVdbT33+9mr7q8Ku?= =?us-ascii?Q?jIW969sbXtPDoHMo/i1fS/ylxmITCwzVW2zXb6wzuJLdrMGsc4Q6QTqqZPis?= =?us-ascii?Q?STJdvANvC15KrCuosDlVRPA/dhS4h7M3Molg5MCN4vQtwtoDQbQhGd5QcVM+?= =?us-ascii?Q?tbc2dPYUJBRGB3pHb1s=3D?= X-Forefront-Antispam-Report: CIP:216.228.118.232;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc7edge1.nvidia.com;CAT:NONE;SFS:(13230040)(82310400026)(1800799024)(36860700013)(376014)(7416014);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Nov 2025 19:36:13.8097 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 4a01eec4-fcd4-4007-c228-08de2d230f6c X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.232];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CH2PEPF00000142.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY5PR12MB4132 This will allow device drivers to issue administration commands. Signed-off-by: Daniel Jurgens Reviewed-by: Parav Pandit Reviewed-by: Xuan Zhuo --- v4: New patch for v4 v12: Add (optional) to admin_cmd_exec field. MST --- drivers/virtio/virtio_pci_modern.c | 2 ++ include/linux/virtio_config.h | 6 ++++++ 2 files changed, 8 insertions(+) diff --git a/drivers/virtio/virtio_pci_modern.c b/drivers/virtio/virtio_pci_modern.c index 1675d6cda416..e2a813b3b3fd 100644 --- a/drivers/virtio/virtio_pci_modern.c +++ b/drivers/virtio/virtio_pci_modern.c @@ -1236,6 +1236,7 @@ static const struct virtio_config_ops virtio_pci_config_nodev_ops = { .get_shm_region = vp_get_shm_region, .disable_vq_and_reset = vp_modern_disable_vq_and_reset, .enable_vq_after_reset = vp_modern_enable_vq_after_reset, + .admin_cmd_exec = vp_modern_admin_cmd_exec, }; static const struct virtio_config_ops virtio_pci_config_ops = { @@ -1256,6 +1257,7 @@ static const struct virtio_config_ops virtio_pci_config_ops = { .get_shm_region = vp_get_shm_region, .disable_vq_and_reset = vp_modern_disable_vq_and_reset, .enable_vq_after_reset = vp_modern_enable_vq_after_reset, + .admin_cmd_exec = vp_modern_admin_cmd_exec, }; /* the PCI probing function */ diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h index 16001e9f9b39..d620f46bcc07 100644 --- a/include/linux/virtio_config.h +++ b/include/linux/virtio_config.h @@ -108,6 +108,10 @@ struct virtqueue_info { * Returns 0 on success or error status * If disable_vq_and_reset is set, then enable_vq_after_reset must also be * set. + * @admin_cmd_exec: Execute an admin VQ command (optional). + * vdev: the virtio_device + * cmd: the command to execute + * Returns 0 on success or error status */ struct virtio_config_ops { void (*get)(struct virtio_device *vdev, unsigned offset, @@ -137,6 +141,8 @@ struct virtio_config_ops { struct virtio_shm_region *region, u8 id); int (*disable_vq_and_reset)(struct virtqueue *vq); int (*enable_vq_after_reset)(struct virtqueue *vq); + int (*admin_cmd_exec)(struct virtio_device *vdev, + struct virtio_admin_cmd *cmd); }; /** -- 2.50.1