diff options
| author | Eli Cohen <eli@mellanox.com> | 2020-08-04 19:20:43 +0300 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2020-08-05 18:39:19 -0400 |
| commit | aac50c0bd434794b9950181349099e709ca4edad (patch) | |
| tree | fa327338edce163e18e1d9da46a0d7715c00b3a9 /include/linux/vdpa.h | |
| parent | a9974489b61c09c702c85c6cba3d1a3fd1be7a15 (diff) | |
| download | linux-aac50c0bd434794b9950181349099e709ca4edad.tar.bz2 | |
net/vdpa: Use struct for set/get vq state
For now VQ state involves 16 bit available index value encoded in u64
variable. In the future it will be extended to contain more fields. Use
struct to contain the state, now containing only a single u16 for the
available index. In the future we can add fields to this struct.
Reviewed-by: Parav Pandit <parav@mellanox.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Eli Cohen <eli@mellanox.com>
Link: https://lore.kernel.org/r/20200804162048.22587-8-eli@mellanox.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include/linux/vdpa.h')
| -rw-r--r-- | include/linux/vdpa.h | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h index b5901cde73e0..d7399c983734 100644 --- a/include/linux/vdpa.h +++ b/include/linux/vdpa.h @@ -28,6 +28,14 @@ struct vdpa_notification_area { }; /** + * vDPA vq_state definition + * @avail_index: available index + */ +struct vdpa_vq_state { + u16 avail_index; +}; + +/** * vDPA device - representation of a vDPA device * @dev: underlying device * @dma_dev: the actual device that is performing DMA @@ -80,12 +88,12 @@ struct vdpa_device { * @set_vq_state: Set the state for a virtqueue * @vdev: vdpa device * @idx: virtqueue index - * @state: virtqueue state (last_avail_idx) + * @state: pointer to set virtqueue state (last_avail_idx) * Returns integer: success (0) or error (< 0) * @get_vq_state: Get the state for a virtqueue * @vdev: vdpa device * @idx: virtqueue index - * Returns virtqueue state (last_avail_idx) + * @state: pointer to returned state (last_avail_idx) * @get_vq_notification: Get the notification area for a virtqueue * @vdev: vdpa device * @idx: virtqueue index @@ -183,8 +191,10 @@ struct vdpa_config_ops { struct vdpa_callback *cb); void (*set_vq_ready)(struct vdpa_device *vdev, u16 idx, bool ready); bool (*get_vq_ready)(struct vdpa_device *vdev, u16 idx); - int (*set_vq_state)(struct vdpa_device *vdev, u16 idx, u64 state); - u64 (*get_vq_state)(struct vdpa_device *vdev, u16 idx); + int (*set_vq_state)(struct vdpa_device *vdev, u16 idx, + const struct vdpa_vq_state *state); + void (*get_vq_state)(struct vdpa_device *vdev, u16 idx, + struct vdpa_vq_state *state); struct vdpa_notification_area (*get_vq_notification)(struct vdpa_device *vdev, u16 idx); /* vq irq is not expected to be changed once DRIVER_OK is set */ |