vhost: export vhost vring info

[dpdk.git] / lib / librte_vhost / vhost.c

diff --git a/lib/librte_vhost/vhost.c b/lib/librte_vhost/vhost.c
index 90b0f67..4b9d781 100644 (file)
--- a/lib/librte_vhost/vhost.c
+++ b/lib/librte_vhost/vhost.c
@@ -395,6 +395,36 @@ rte_vhost_get_mem_table(int vid, struct rte_vhost_memory **mem)
        return 0;
 }
 
+int
+rte_vhost_get_vhost_vring(int vid, uint16_t vring_idx,
+                         struct rte_vhost_vring *vring)
+{
+       struct virtio_net *dev;
+       struct vhost_virtqueue *vq;
+
+       dev = get_device(vid);
+       if (!dev)
+               return -1;
+
+       if (vring_idx >= VHOST_MAX_VRING)
+               return -1;
+
+       vq = dev->virtqueue[vring_idx];
+       if (!vq)
+               return -1;
+
+       vring->desc  = vq->desc;
+       vring->avail = vq->avail;
+       vring->used  = vq->used;
+       vring->log_guest_addr  = vq->log_guest_addr;
+
+       vring->callfd  = vq->callfd;
+       vring->kickfd  = vq->kickfd;
+       vring->size    = vq->size;
+
+       return 0;
+}
+
 uint16_t
 rte_vhost_avail_entries(int vid, uint16_t queue_id)
 {