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vdpa: Introduce query of device config layout

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Introduce a command to query a device config layout.

An example query of network vdpa device:

$ vdpa dev add name bar mgmtdev vdpasim_net

$ vdpa dev config show
bar: mac 00:35:09:19:48:05 link up link_announce false mtu 1500

$ vdpa dev config show -jp
{
    "config": {
        "bar": {
            "mac": "00:35:09:19:48:05",
            "link ": "up",
            "link_announce ": false,
            "mtu": 1500,
        }
    }
}

Signed-off-by: Parav Pandit <parav@nvidia.com>
Signed-off-by: Eli Cohen <elic@nvidia.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20211026175519.87795-3-parav@nvidia.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Parav Pandit
2021-10-26 20:55:13 +03:00
committed by Michael S. Tsirkin
parent 6dbb1f1687
commit ad69dd0bf2
3 changed files with 184 additions and 0 deletions
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6
include/uapi/linux/vdpa.h
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@@ -17,6 +17,7 @@ enum vdpa_command {
VDPA_CMD_DEV_NEW,
VDPA_CMD_DEV_DEL,
VDPA_CMD_DEV_GET, /* can dump */
VDPA_CMD_DEV_CONFIG_GET, /* can dump */
};
enum vdpa_attr {
@@ -34,6 +35,11 @@ enum vdpa_attr {
VDPA_ATTR_DEV_MAX_VQ_SIZE, /* u16 */
VDPA_ATTR_DEV_MIN_VQ_SIZE, /* u16 */
VDPA_ATTR_DEV_NET_CFG_MACADDR, /* binary */
VDPA_ATTR_DEV_NET_STATUS, /* u8 */
VDPA_ATTR_DEV_NET_CFG_MAX_VQP, /* u16 */
VDPA_ATTR_DEV_NET_CFG_MTU, /* u16 */
/* new attributes must be added above here */
VDPA_ATTR_MAX,
};