[dpdk-dev,v2,2/4] virtio-user: add mq in vhost user adapter
Commit Message
This patch mainly adds method in vhost user adapter to communicate
enable/disable queues messages with vhost user backend.
Signed-off-by: Jianfeng Tan <jianfeng.tan@intel.com>
---
drivers/net/virtio/virtio_user/vhost.h | 5 +++++
drivers/net/virtio/virtio_user/vhost_user.c | 21 +++++++++++++++++++++
2 files changed, 26 insertions(+)
@@ -136,6 +136,11 @@ struct vhost_user_msg {
/* The version of the protocol we support */
#define VHOST_USER_VERSION 0x1
+#define VHOST_USER_F_PROTOCOL_FEATURES 30
+#define VHOST_USER_MQ (1ULL << VHOST_USER_F_PROTOCOL_FEATURES)
+
int vhost_user_sock(int vhostfd, uint64_t req, void *arg);
int vhost_user_setup(const char *path);
+int vhost_user_enable_queue_pair(int vhostfd, unsigned pair_idx, int enable);
+
#endif
@@ -286,6 +286,7 @@ vhost_user_sock(int vhostfd, uint64_t req, void *arg)
case VHOST_USER_SET_VRING_NUM:
case VHOST_USER_SET_VRING_BASE:
+ case VHOST_USER_SET_VRING_ENABLE:
memcpy(&msg.payload.state, arg, sizeof(msg.payload.state));
msg.size = sizeof(m.payload.state);
break;
@@ -402,3 +403,23 @@ vhost_user_setup(const char *path)
return fd;
}
+
+int
+vhost_user_enable_queue_pair(int vhostfd, unsigned pair_idx, int enable)
+{
+ int i;
+
+ for (i = 0; i < 2; ++i) {
+ struct vhost_vring_state state = {
+ .index = pair_idx * 2 + i,
+ .num = enable,
+ };
+
+ if (vhost_user_sock(vhostfd,
+ VHOST_USER_SET_VRING_ENABLE, &state))
+ return -1;
+ }
+
+ return 0;
+
+}