examples/vhost_blk: replace SMP barrier with thread fence

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

diff --git a/lib/librte_vhost/vhost.c b/lib/librte_vhost/vhost.c
index f78bdfc..b83cf63 100644 (file)
--- a/lib/librte_vhost/vhost.c
+++ b/lib/librte_vhost/vhost.c
@@ -544,6 +544,11 @@ init_vring_queue(struct virtio_net *dev, uint32_t vring_idx)
        }
 
        vq = dev->virtqueue[vring_idx];
+       if (!vq) {
+               VHOST_LOG_CONFIG(ERR, "Virtqueue not allocated (%d)\n",
+                               vring_idx);
+               return;
+       }
 
        memset(vq, 0, sizeof(struct vhost_virtqueue));
 
@@ -570,6 +575,12 @@ reset_vring_queue(struct virtio_net *dev, uint32_t vring_idx)
        }
 
        vq = dev->virtqueue[vring_idx];
+       if (!vq) {
+               VHOST_LOG_CONFIG(ERR, "Virtqueue not allocated (%d)\n",
+                               vring_idx);
+               return;
+       }
+
        callfd = vq->callfd;
        init_vring_queue(dev, vring_idx);
        vq->callfd = callfd;
@@ -594,7 +605,7 @@ alloc_vring_queue(struct virtio_net *dev, uint32_t vring_idx)
                }
 
                dev->virtqueue[i] = vq;
-               init_vring_queue(dev, vring_idx);
+               init_vring_queue(dev, i);
                rte_spinlock_init(&vq->access_lock);
                vq->avail_wrap_counter = 1;
                vq->used_wrap_counter = 1;
@@ -1577,6 +1588,9 @@ int rte_vhost_async_channel_register(int vid, uint16_t queue_id,
 
        f.intval = features;
 
+       if (queue_id >= VHOST_MAX_VRING)
+               return -1;
+
        vq = dev->virtqueue[queue_id];
 
        if (unlikely(vq == NULL || !dev->async_copy))
@@ -1658,6 +1672,9 @@ int rte_vhost_async_channel_unregister(int vid, uint16_t queue_id)
        if (dev == NULL)
                return ret;
 
+       if (queue_id >= VHOST_MAX_VRING)
+               return ret;
+
        vq = dev->virtqueue[queue_id];
 
        if (vq == NULL)