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Tsirkin" , Zhu Lingshan , Stefano Garzarella , Xie Yongji , Eli Cohen , Si-Wei Liu , Parav Pandit , Longpeng , , , , Subject: [RFC PATCH v2 13/19] vhost-vdpa: uAPI to get virtqueue group id Date: Fri, 25 Feb 2022 02:52:53 +0530 Message-ID: <20220224212314.1326-14-gdawar@xilinx.com> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20220224212314.1326-1-gdawar@xilinx.com> References: <20201216064818.48239-1-jasowang@redhat.com> <20220224212314.1326-1-gdawar@xilinx.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 215f0a5e-6af4-4274-8287-08d9f7dc7646 X-MS-TrafficTypeDiagnostic: MN2PR02MB6830:EE_ X-Microsoft-Antispam-PRVS: X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:149.199.62.198;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:xsj-pvapexch02.xlnx.xilinx.com;PTR:unknown-62-198.xilinx.com;CAT:NONE;SFS:(13230001)(4636009)(46966006)(36840700001)(40470700004)(2906002)(4326008)(7696005)(508600001)(316002)(54906003)(47076005)(36860700001)(186003)(26005)(83380400001)(36756003)(336012)(426003)(7636003)(109986005)(2616005)(82310400004)(356005)(9786002)(5660300002)(6666004)(8936002)(8676002)(70206006)(40460700003)(1076003)(44832011)(7416002)(70586007)(102446001)(266003);DIR:OUT;SFP:1101; X-OriginatorOrg: xilinx.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Feb 2022 21:27:29.7896 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 215f0a5e-6af4-4274-8287-08d9f7dc7646 X-MS-Exchange-CrossTenant-Id: 657af505-d5df-48d0-8300-c31994686c5c X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=657af505-d5df-48d0-8300-c31994686c5c;Ip=[149.199.62.198];Helo=[xsj-pvapexch02.xlnx.xilinx.com] X-MS-Exchange-CrossTenant-AuthSource: DM3NAM02FT052.eop-nam02.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR02MB6830 To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Follows the support for virtqueue group in vDPA. This patches introduces uAPI to get the virtqueue group ID for a specific virtqueue in vhost-vdpa. Signed-off-by: Jason Wang Signed-off-by: Gautam Dawar --- drivers/vhost/vdpa.c | 8 ++++++++ include/uapi/linux/vhost.h | 8 ++++++++ 2 files changed, 16 insertions(+) diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c index 733b305c5029..cfe57f0871a3 100644 --- a/drivers/vhost/vdpa.c +++ b/drivers/vhost/vdpa.c @@ -444,6 +444,14 @@ static long vhost_vdpa_vring_ioctl(struct vhost_vdpa *v, unsigned int cmd, return -EFAULT; ops->set_vq_ready(vdpa, idx, s.num); return 0; + case VHOST_VDPA_GET_VRING_GROUP: + s.index = idx; + s.num = ops->get_vq_group(vdpa, idx); + if (s.num >= vdpa->ngroups) + return -EIO; + else if (copy_to_user(argp, &s, sizeof(s))) + return -EFAULT; + return 0; case VHOST_GET_VRING_BASE: r = ops->get_vq_state(v->vdpa, idx, &vq_state); if (r) diff --git a/include/uapi/linux/vhost.h b/include/uapi/linux/vhost.h index 8762911a3cb8..99de06476fdc 100644 --- a/include/uapi/linux/vhost.h +++ b/include/uapi/linux/vhost.h @@ -150,4 +150,12 @@ /* Get the number of address spaces. */ #define VHOST_VDPA_GET_AS_NUM _IOR(VHOST_VIRTIO, 0x7A, unsigned int) + +/* Get the group for a virtqueue: read index, write group in num, + * The virtqueue index is stored in the index field of + * vhost_vring_state. The group for this specific virtqueue is + * returned via num field of vhost_vring_state. + */ +#define VHOST_VDPA_GET_VRING_GROUP _IOWR(VHOST_VIRTIO, 0x7B, \ + struct vhost_vring_state) #endif -- 2.25.0