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Diffstat (limited to 'hw/virtio/vhost-user.c')
| -rw-r--r-- | hw/virtio/vhost-user.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c index e42fde68d6..b11c0d21a0 100644 --- a/hw/virtio/vhost-user.c +++ b/hw/virtio/vhost-user.c @@ -48,6 +48,7 @@ typedef enum VhostUserRequest { VHOST_USER_GET_PROTOCOL_FEATURES = 15, VHOST_USER_SET_PROTOCOL_FEATURES = 16, VHOST_USER_GET_QUEUE_NUM = 17, + VHOST_USER_SET_VRING_ENABLE = 18, VHOST_USER_MAX } VhostUserRequest; @@ -290,6 +291,7 @@ static int vhost_user_call(struct vhost_dev *dev, unsigned long int request, case VHOST_USER_SET_VRING_NUM: case VHOST_USER_SET_VRING_BASE: + case VHOST_USER_SET_VRING_ENABLE: memcpy(&msg.state, arg, sizeof(struct vhost_vring_state)); msg.size = sizeof(m.state); break; @@ -406,6 +408,22 @@ static int vhost_user_init(struct vhost_dev *dev, void *opaque) return 0; } +static int vhost_user_set_vring_enable(struct vhost_dev *dev, int enable) +{ + struct vhost_vring_state state = { + .index = dev->vq_index, + .num = enable, + }; + + assert(dev->vhost_ops->backend_type == VHOST_BACKEND_TYPE_USER); + + if (!(dev->protocol_features & (1ULL << VHOST_USER_PROTOCOL_F_MQ))) { + return -1; + } + + return vhost_user_call(dev, VHOST_USER_SET_VRING_ENABLE, &state); +} + static int vhost_user_cleanup(struct vhost_dev *dev) { assert(dev->vhost_ops->backend_type == VHOST_BACKEND_TYPE_USER); @@ -428,4 +446,5 @@ const VhostOps user_ops = { .vhost_backend_init = vhost_user_init, .vhost_backend_cleanup = vhost_user_cleanup, .vhost_backend_get_vq_index = vhost_user_get_vq_index, + .vhost_backend_set_vring_enable = vhost_user_set_vring_enable, }; |