[PULL 03/20] vhost: Rename last_index to vq_index_end

["Michael S. Tsirkin" <mst@redhat.com>]

From: Eugenio Pérez <eperezma@redhat.com>

The doc of this field pointed out that last_index is the last vq index.
This is misleading, since it's actually one past the end of the vqs.

Renaming and modifying comment.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20211104085625.2054959-2-eperezma@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
 include/hw/virtio/vhost.h | 4 ++--
 hw/net/vhost_net.c        | 4 ++--
 hw/virtio/vhost-vdpa.c    | 2 +-
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/include/hw/virtio/vhost.h b/include/hw/virtio/vhost.h
index 3fa0b554ef..58a73e7b7a 100644
--- a/include/hw/virtio/vhost.h
+++ b/include/hw/virtio/vhost.h
@@ -74,8 +74,8 @@ struct vhost_dev {
     unsigned int nvqs;
     /* the first virtqueue which would be used by this vhost dev */
     int vq_index;
-    /* the last vq index for the virtio device (not vhost) */
-    int last_index;
+    /* one past the last vq index for the virtio device (not vhost) */
+    int vq_index_end;
     /* if non-zero, minimum required value for max_queues */
     int num_queues;
     uint64_t features;
diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c
index 0d888f29a6..29f2c4212f 100644
--- a/hw/net/vhost_net.c
+++ b/hw/net/vhost_net.c
@@ -232,10 +232,10 @@ fail:
 }
 
 static void vhost_net_set_vq_index(struct vhost_net *net, int vq_index,
-                                   int last_index)
+                                   int vq_index_end)
 {
     net->dev.vq_index = vq_index;
-    net->dev.last_index = last_index;
+    net->dev.vq_index_end = vq_index_end;
 }
 
 static int vhost_net_start_one(struct vhost_net *net,
diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c
index 0d8051426c..bcaf00e09f 100644
--- a/hw/virtio/vhost-vdpa.c
+++ b/hw/virtio/vhost-vdpa.c
@@ -645,7 +645,7 @@ static int vhost_vdpa_dev_start(struct vhost_dev *dev, bool started)
         vhost_vdpa_host_notifiers_uninit(dev, dev->nvqs);
     }
 
-    if (dev->vq_index + dev->nvqs != dev->last_index) {
+    if (dev->vq_index + dev->nvqs != dev->vq_index_end) {
         return 0;
     }
 
-- 
MST