[PATCH net-next v8 02/12] virtio: Add config_op for admin commands

[Daniel Jurgens]

This will allow device drivers to issue administration commands.

Signed-off-by: Daniel Jurgens <dani...@nvidia.com>
Reviewed-by: Parav Pandit <pa...@nvidia.com>
Reviewed-by: Xuan Zhuo <xuanz...@linux.alibaba.com>

---
v4: New patch for v4
---
 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 ff11de5b3d69..acc3f958f96a 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..19606609254e 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.
+ *     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