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authorZhu Lingshan <lingshan.zhu@intel.com>2020-07-31 09:55:30 +0300
committerMichael S. Tsirkin <mst@redhat.com>2020-08-05 18:08:42 +0300
commit7164675ab5caf46867d6a5448f4ff3af92d80a30 (patch)
tree1d0250912b493975a46137d044607ef214148e10 /include/linux/vdpa.h
parent2edd9cb79fb31b0907c6e0cdce2824780cf9b153 (diff)
downloadlinux-7164675ab5caf46867d6a5448f4ff3af92d80a30.tar.xz
vDPA: add get_vq_irq() in vdpa_config_ops
This commit adds a new function get_vq_irq() in struct vdpa_config_ops, which will return the irq number of a virtqueue. Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com> Suggested-by: Jason Wang <jasowang@redhat.com> Link: https://lore.kernel.org/r/20200731065533.4144-4-lingshan.zhu@intel.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include/linux/vdpa.h')
-rw-r--r--include/linux/vdpa.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h
index 29b8296f1414..5c530a64aa06 100644
--- a/include/linux/vdpa.h
+++ b/include/linux/vdpa.h
@@ -89,6 +89,12 @@ struct vdpa_device {
* @vdev: vdpa device
* @idx: virtqueue index
* Returns the notifcation area
+ * @get_vq_irq: Get the irq number of a virtqueue (optional,
+ * but must implemented if require vq irq offloading)
+ * @vdev: vdpa device
+ * @idx: virtqueue index
+ * Returns int: irq number of a virtqueue,
+ * negative number if no irq assigned.
* @get_vq_align: Get the virtqueue align requirement
* for the device
* @vdev: vdpa device
@@ -180,6 +186,7 @@ struct vdpa_config_ops {
u64 (*get_vq_state)(struct vdpa_device *vdev, u16 idx);
struct vdpa_notification_area
(*get_vq_notification)(struct vdpa_device *vdev, u16 idx);
+ int (*get_vq_irq)(struct vdpa_device *vdv, u16 idx);
/* Device ops */
u32 (*get_vq_align)(struct vdpa_device *vdev);