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vdpa: Enable user to query vdpa device info

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Enable user to query vdpa device information.

$ vdpa dev add mgmtdev vdpasim_net name foo2

Show the newly created vdpa device by its name:
$ vdpa dev show foo2
foo2: type network mgmtdev vdpasim_net vendor_id 0 max_vqs 2 max_vq_size 256

$ vdpa dev show foo2 -jp
{
    "dev": {
        "foo2": {
            "type": "network",
            "mgmtdev": "vdpasim_net",
            "vendor_id": 0,
            "max_vqs": 2,
            "max_vq_size": 256
        }
    }
}

Signed-off-by: Parav Pandit <parav@nvidia.com>
Reviewed-by: Eli Cohen <elic@nvidia.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20210105103203.82508-6-parav@nvidia.com

Including a memory leak fix:

Link: https://lore.kernel.org/r/20210217060614.59561-1-parav@nvidia.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Parav Pandit
2021-01-05 12:32:02 +02:00
committed by Michael S. Tsirkin
parent 903f7bcaed
commit bc0d90ee02
2 changed files with 136 additions and 0 deletions
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5
include/uapi/linux/vdpa.h
View File

@@ -16,6 +16,7 @@ enum vdpa_command {
VDPA_CMD_MGMTDEV_GET, /* can dump */
VDPA_CMD_DEV_NEW,
VDPA_CMD_DEV_DEL,
VDPA_CMD_DEV_GET, /* can dump */
};
enum vdpa_attr {
@@ -27,6 +28,10 @@ enum vdpa_attr {
VDPA_ATTR_MGMTDEV_SUPPORTED_CLASSES, /* u64 */
VDPA_ATTR_DEV_NAME, /* string */
VDPA_ATTR_DEV_ID, /* u32 */
VDPA_ATTR_DEV_VENDOR_ID, /* u32 */
VDPA_ATTR_DEV_MAX_VQS, /* u32 */
VDPA_ATTR_DEV_MAX_VQ_SIZE, /* u16 */
/* new attributes must be added above here */
VDPA_ATTR_MAX,