static int vhost_user_set_vring_addr(struct vhost_dev *dev, struct vhost_vring_addr *addr) { VhostUserMsg msg = { .request = VHOST_USER_SET_VRING_ADDR, .flags = VHOST_USER_VERSION, .payload.addr = *addr, .size = sizeof(msg.payload.addr), }; vhost_user_write(dev, &msg, NULL, 0); return 0; }