/* Step 1: set features
* Make sure VHOST_USER_F_PROTOCOL_FEATURES is added if mq is enabled,
- * and VIRTIO_NET_F_MAC is stripped.
+ * VIRTIO_NET_F_MAC and VIRTIO_NET_F_CTRL_VQ is stripped.
*/
features = dev->features;
- if (dev->max_queue_pairs > 1)
- features |= VHOST_USER_MQ;
features &= ~(1ull << VIRTIO_NET_F_MAC);
+ features &= ~(1ull << VIRTIO_NET_F_CTRL_VQ);
ret = vhost_user_sock(dev->vhostfd, VHOST_USER_SET_FEATURES, &features);
if (ret < 0)
goto error;
int virtio_user_stop_device(struct virtio_user_dev *dev)
{
- return vhost_user_sock(dev->vhostfd, VHOST_USER_RESET_OWNER, NULL);
+ uint32_t i;
+
+ for (i = 0; i < dev->max_queue_pairs * 2; ++i) {
+ close(dev->callfds[i]);
+ close(dev->kickfds[i]);
+ }
+
+ for (i = 0; i < dev->max_queue_pairs; ++i)
+ vhost_user_enable_queue_pair(dev->vhostfd, i, 0);
+
+ return 0;
}
static inline void
virtio_user_dev_init(struct virtio_user_dev *dev, char *path, int queues,
int cq, int queue_size, const char *mac)
{
+ uint32_t i;
+
snprintf(dev->path, PATH_MAX, "%s", path);
dev->max_queue_pairs = queues;
dev->queue_pairs = 1; /* mq disabled by default */
parse_mac(dev, mac);
dev->vhostfd = -1;
+ for (i = 0; i < VIRTIO_MAX_VIRTQUEUES * 2 + 1; ++i) {
+ dev->kickfds[i] = -1;
+ dev->callfds[i] = -1;
+ }
+
dev->vhostfd = vhost_user_setup(dev->path);
if (dev->vhostfd < 0) {
PMD_INIT_LOG(ERR, "backend set up fails");
}
if (vhost_user_sock(dev->vhostfd, VHOST_USER_GET_FEATURES,
- &dev->features) < 0) {
+ &dev->device_features) < 0) {
PMD_INIT_LOG(ERR, "get_features failed: %s", strerror(errno));
return -1;
}
if (dev->mac_specified)
- dev->features |= (1ull << VIRTIO_NET_F_MAC);
+ dev->device_features |= (1ull << VIRTIO_NET_F_MAC);
- if (!cq) {
- dev->features &= ~(1ull << VIRTIO_NET_F_CTRL_VQ);
- /* Also disable features depends on VIRTIO_NET_F_CTRL_VQ */
- dev->features &= ~(1ull << VIRTIO_NET_F_CTRL_RX);
- dev->features &= ~(1ull << VIRTIO_NET_F_CTRL_VLAN);
- dev->features &= ~(1ull << VIRTIO_NET_F_GUEST_ANNOUNCE);
- dev->features &= ~(1ull << VIRTIO_NET_F_MQ);
- dev->features &= ~(1ull << VIRTIO_NET_F_CTRL_MAC_ADDR);
- } else {
- /* vhost user backend does not need to know ctrl-q, so
- * actually we need add this bit into features. However,
- * DPDK vhost-user does send features with this bit, so we
- * check it instead of OR it for now.
+ if (cq) {
+ /* device does not really need to know anything about CQ,
+ * so if necessary, we just claim to support CQ
*/
- if (!(dev->features & (1ull << VIRTIO_NET_F_CTRL_VQ)))
- PMD_INIT_LOG(INFO, "vhost does not support ctrl-q");
- }
-
- if (dev->max_queue_pairs > 1) {
- if (!(dev->features & VHOST_USER_MQ)) {
- PMD_INIT_LOG(ERR, "MQ not supported by the backend");
- return -1;
- }
+ dev->device_features |= (1ull << VIRTIO_NET_F_CTRL_VQ);
+ } else {
+ dev->device_features &= ~(1ull << VIRTIO_NET_F_CTRL_VQ);
+ /* Also disable features depends on VIRTIO_NET_F_CTRL_VQ */
+ dev->device_features &= ~(1ull << VIRTIO_NET_F_CTRL_RX);
+ dev->device_features &= ~(1ull << VIRTIO_NET_F_CTRL_VLAN);
+ dev->device_features &= ~(1ull << VIRTIO_NET_F_GUEST_ANNOUNCE);
+ dev->device_features &= ~(1ull << VIRTIO_NET_F_MQ);
+ dev->device_features &= ~(1ull << VIRTIO_NET_F_CTRL_MAC_ADDR);
}
return 0;
void
virtio_user_dev_uninit(struct virtio_user_dev *dev)
{
- uint32_t i;
-
- for (i = 0; i < dev->max_queue_pairs * 2; ++i) {
- close(dev->callfds[i]);
- close(dev->kickfds[i]);
- }
-
close(dev->vhostfd);
}