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 at intel.com>
---
drivers/net/virtio/virtio_user/vhost.h | 4 ++++
drivers/net/virtio/virtio_user/vhost_user.c | 21 +++++++++++++++++++++
2 files changed, 25 insertions(+)
diff --git a/drivers/net/virtio/virtio_user/vhost.h
b/drivers/net/virtio/virtio_user/vhost.h
index 5cd3543..fe236a7 100644
--- a/drivers/net/virtio/virtio_user/vhost.h
+++ b/drivers/net/virtio/virtio_user/vhost.h
@@ -209,8 +209,12 @@ enum {
#define VHOST_KERNEL 0
#define VHOST_USER 1
+#define VHOST_USER_F_PROTOCOL_FEATURES 30
+#define VHOST_USER_MQ (1ULL << VHOST_USER_F_PROTOCOL_FEATURES)
+
int vhost_user_sock(int vhostfd, unsigned long int req, void *arg);
int vhost_user_setup(const char *path);
+int vhost_user_enable_queue_pair(int vhostfd, unsigned pair_idx, int enable);
int vhost_kernel_ioctl(int vhostfd, unsigned long int req, void *arg);
int vhost_kernel_setup(const char *path, const char *ifname, int *p_tapfd);
diff --git a/drivers/net/virtio/virtio_user/vhost_user.c
b/drivers/net/virtio/virtio_user/vhost_user.c
index 6fd648c..d8f7996 100644
--- a/drivers/net/virtio/virtio_user/vhost_user.c
+++ b/drivers/net/virtio/virtio_user/vhost_user.c
@@ -263,6 +263,7 @@ vhost_user_sock(int vhostfd, unsigned long int 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;
@@ -373,3 +374,23 @@ 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;
+
+}
--
2.1.4
