+ if (dev->ops->send_request(dev, VHOST_USER_GET_FEATURES,
+ &dev->device_features) < 0) {
+ PMD_INIT_LOG(ERR, "get_features failed: %s",
+ strerror(errno));
+ return -1;
+ }
+
+ if (dev->device_features &
+ (1ULL << VHOST_USER_F_PROTOCOL_FEATURES)) {
+ if (dev->ops->send_request(dev,
+ VHOST_USER_GET_PROTOCOL_FEATURES,
+ &protocol_features))
+ return -1;
+
+ dev->protocol_features &= protocol_features;
+
+ if (dev->ops->send_request(dev,
+ VHOST_USER_SET_PROTOCOL_FEATURES,
+ &dev->protocol_features))
+ return -1;
+
+ if (!(dev->protocol_features &
+ (1ULL << VHOST_USER_PROTOCOL_F_MQ)))
+ dev->unsupported_features |= (1ull << VIRTIO_NET_F_MQ);
+ }
+
+ dev->device_features |= dev->frontend_features;
+
+ /* umask vhost-user unsupported features */
+ dev->device_features &= ~(dev->unsupported_features);
+
+ dev->features &= dev->device_features;
+
+ /* For packed ring, resetting queues is required in reconnection. */
+ if (vtpci_packed_queue(hw) &&
+ (vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_DRIVER_OK)) {
+ PMD_INIT_LOG(NOTICE, "Packets on the fly will be dropped"
+ " when packed ring reconnecting.");
+ virtio_user_reset_queues_packed(eth_dev);
+ }