Signed-off-by: Wei Wang <[email protected]>
---
hw/virtio/vhost-pci-slave.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/hw/virtio/vhost-pci-slave.c b/hw/virtio/vhost-pci-slave.c
index 2cb84ed..ff9a251 100644
--- a/hw/virtio/vhost-pci-slave.c
+++ b/hw/virtio/vhost-pci-slave.c
@@ -224,6 +224,16 @@ static void vp_slave_set_vring_base(VhostUserMsg *msg)
pvq_node->last_avail_idx = msg->payload.u64;
}
+static int vp_slave_get_vring_base(CharBackend *chr_be, VhostUserMsg *msg)
+{
+ /* send back vring base to qemu */
+ msg->flags |= VHOST_USER_REPLY_MASK;
+ msg->size = sizeof(m.payload.state);
+ msg->payload.state.num = 0;
+
+ return vp_slave_write(chr_be, msg);
+}
+
static void vp_slave_set_vring_addr(VhostUserMsg *msg)
{
PeerVqNode *pvq_node = QLIST_FIRST(&vp_slave->pvq_list);
@@ -330,6 +340,12 @@ static void vp_slave_read(void *opaque, const uint8_t
*buf, int size)
case VHOST_USER_SET_VRING_BASE:
vp_slave_set_vring_base(&msg);
break;
+ case VHOST_USER_GET_VRING_BASE:
+ ret = vp_slave_get_vring_base(chr_be, &msg);
+ if (ret < 0) {
+ goto err_handling;
+ }
+ break;
case VHOST_USER_SET_VRING_ADDR:
vp_slave_set_vring_addr(&msg);
break;
--
2.7.4
