243 	((((id) + 1) >= vd->dring_len)? 0 : (id) + 1)
490 	uint32_t		dring_len;	/* number of dring elements */  member
4647 	vd->dring_len = reg_msg->num_descriptors;  in vd_process_dring_reg_msg()
4651 	    vd->descriptor_size, vd->dring_len);  in vd_process_dring_reg_msg()
4658 	    kmem_zalloc((sizeof (*vd->dring_task)) * vd->dring_len, KM_SLEEP);  in vd_process_dring_reg_msg()
4659 	for (int i = 0; i < vd->dring_len; i++) {  in vd_process_dring_reg_msg()
4682 		    kmem_zalloc(sizeof (buf_t *) * vd->dring_len, KM_SLEEP);  in vd_process_dring_reg_msg()
4888 	nelem = ((end < start) ? end + vd->dring_len : end) - start + 1;  in vd_process_element_range()
4889 	for (i = start, n = nelem; n > 0; i = (i + 1) % vd->dring_len, n--) {  in vd_process_element_range()
4945 	if (dring_msg->start_idx >= vd->dring_len) {  in vd_process_dring_msg()
4947 		    dring_msg->start_idx, vd->dring_len);  in vd_process_dring_msg()
4952 	    (dring_msg->end_idx >= vd->dring_len)) {  in vd_process_dring_msg()
4954 		    dring_msg->end_idx, vd->dring_len);  in vd_process_dring_msg()
6861 		ASSERT(vdp->dring_len != 0);  in vd_free_dring_task()
6863 		for (int i = 0; i < vdp->dring_len; i++) {  in vd_free_dring_task()
6873 		    (sizeof (*vdp->dring_task)) * vdp->dring_len);  in vd_free_dring_task()
6878 		kmem_free(vdp->write_queue, sizeof (buf_t *) * vdp->dring_len);  in vd_free_dring_task()