vhost: fix null pointer checking

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

diff --git a/lib/librte_vhost/vhost.c b/lib/librte_vhost/vhost.c
index e480aea..163f459 100644 (file)
--- a/lib/librte_vhost/vhost.c
+++ b/lib/librte_vhost/vhost.c
@@ -447,7 +447,7 @@ rte_vhost_get_mtu(int vid, uint16_t *mtu)
 {
        struct virtio_net *dev = get_device(vid);
 
-       if (!dev)
+       if (dev == NULL || mtu == NULL)
                return -ENODEV;
 
        if (!(dev->flags & VIRTIO_DEV_READY))
@@ -515,7 +515,7 @@ rte_vhost_get_ifname(int vid, char *buf, size_t len)
 {
        struct virtio_net *dev = get_device(vid);
 
-       if (dev == NULL)
+       if (dev == NULL || buf == NULL)
                return -1;
 
        len = RTE_MIN(len, sizeof(dev->ifname));
@@ -532,7 +532,7 @@ rte_vhost_get_negotiated_features(int vid, uint64_t *features)
        struct virtio_net *dev;
 
        dev = get_device(vid);
-       if (!dev)
+       if (dev == NULL || features == NULL)
                return -1;
 
        *features = dev->features;
@@ -547,7 +547,7 @@ rte_vhost_get_mem_table(int vid, struct rte_vhost_memory **mem)
        size_t size;
 
        dev = get_device(vid);
-       if (!dev)
+       if (dev == NULL || mem == NULL)
                return -1;
 
        size = dev->mem->nregions * sizeof(struct rte_vhost_mem_region);
@@ -570,7 +570,7 @@ rte_vhost_get_vhost_vring(int vid, uint16_t vring_idx,
        struct vhost_virtqueue *vq;
 
        dev = get_device(vid);
-       if (!dev)
+       if (dev == NULL || vring == NULL)
                return -1;
 
        if (vring_idx >= VHOST_MAX_VRING)
@@ -763,7 +763,7 @@ int rte_vhost_get_log_base(int vid, uint64_t *log_base,
 {
        struct virtio_net *dev = get_device(vid);
 
-       if (!dev)
+       if (dev == NULL || log_base == NULL || log_size == NULL)
                return -1;
 
        *log_base = dev->log_base;
@@ -777,7 +777,7 @@ int rte_vhost_get_vring_base(int vid, uint16_t queue_id,
 {
        struct virtio_net *dev = get_device(vid);
 
-       if (!dev)
+       if (dev == NULL || last_avail_idx == NULL || last_used_idx == NULL)
                return -1;
 
        *last_avail_idx = dev->virtqueue[queue_id]->last_avail_idx;
@@ -805,7 +805,7 @@ int rte_vhost_extern_callback_register(int vid,
 {
        struct virtio_net *dev = get_device(vid);
 
-       if (!dev)
+       if (dev == NULL || ops == NULL)
                return -1;
 
        dev->extern_ops = *ops;