vhost-user: enable multiple queue

By setting VHOST_USER_PROTOCOL_F_MQ protocol feature bit, and
VIRTIO_NET_F_MQ feature bit.

Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Acked-by: Flavio Leitner <fbl@sysclose.org>
Acked-by: Huawei Xie <huawei.xie@intel.com>

doc/guides/rel_notes/release_2_2.rst

@@ -9,6 +9,8 @@ New Features
   *  Added support for Jumbo Frames.
   *  Optimize forwarding performance for Chelsio T5 40GbE cards.
 
+* **Added vhost-user multiple queue support.**
+
 
 Resolved Issues
 ---------------

lib/librte_vhost/vhost_user/virtio-net-user.h

@@ -37,7 +37,9 @@
 #include "vhost-net.h"
 #include "vhost-net-user.h"
 
-#define VHOST_USER_PROTOCOL_FEATURES	0ULL
+#define VHOST_USER_PROTOCOL_F_MQ	0
+
+#define VHOST_USER_PROTOCOL_FEATURES	(1ULL << VHOST_USER_PROTOCOL_F_MQ)
 
 int user_set_mem_table(struct vhost_device_ctx, struct VhostUserMsg *);
 

lib/librte_vhost/virtio-net.c

@@ -74,6 +74,7 @@ static struct virtio_net_config_ll *ll_root;
 #define VHOST_SUPPORTED_FEATURES ((1ULL << VIRTIO_NET_F_MRG_RXBUF) | \
 				(1ULL << VIRTIO_NET_F_CTRL_VQ) | \
 				(1ULL << VIRTIO_NET_F_CTRL_RX) | \
+				(1ULL << VIRTIO_NET_F_MQ)      | \
 				(1ULL << VHOST_F_LOG_ALL)      | \
 				(1ULL << VHOST_USER_F_PROTOCOL_FEATURES))
 static uint64_t VHOST_FEATURES = VHOST_SUPPORTED_FEATURES;