Function idpf_ctlq_add

dpdk/drivers/common/idpf/base/idpf_controlq.c:135–209

* idpf_ctlq_add - add one control queue * @hw: pointer to hardware struct * @qinfo: info for queue to be created * @cq_out: (output) double pointer to control queue to be created * * Allocate and initialize a control queue and add it to the control queue list. * The cq parameter will be allocated/initialized and passed back to the caller * if no errors occur. * * Note: idpf_ctlq_init must

 * Note: idpf_ctlq_init must be called prior to any calls to idpf_ctlq_add
 */
int idpf_ctlq_add(struct idpf_hw *hw,
		  struct idpf_ctlq_create_info *qinfo,
		  struct idpf_ctlq_info **cq_out)
{
	struct idpf_ctlq_info *cq;
	bool is_rxq = false;
	int status = 0;

	if (!qinfo->len || !qinfo->buf_size ||
	    qinfo->len > IDPF_CTLQ_MAX_RING_SIZE ||
	    qinfo->buf_size > IDPF_CTLQ_MAX_BUF_LEN)
		return -EINVAL;

	cq = (struct idpf_ctlq_info *)
	     idpf_calloc(hw, 1, sizeof(struct idpf_ctlq_info));
	if (!cq)
		return -ENOMEM;

	cq->cq_type = qinfo->type;
	cq->q_id = qinfo->id;
	cq->buf_size = qinfo->buf_size;
	cq->ring_size = qinfo->len;

	cq->next_to_use = 0;
	cq->next_to_clean = 0;
	cq->next_to_post = cq->ring_size - 1;

	switch (qinfo->type) {
	case IDPF_CTLQ_TYPE_MAILBOX_RX:
		is_rxq = true;
		/* fallthrough */
	case IDPF_CTLQ_TYPE_MAILBOX_TX:
		status = idpf_ctlq_alloc_ring_res(hw, cq);
		break;
	default:
		status = -EINVAL;
		break;
	}

	if (status)
		goto init_free_q;

	if (is_rxq) {
		idpf_ctlq_init_rxq_bufs(cq);
	} else {
		/* Allocate the array of msg pointers for TX queues */
		cq->bi.tx_msg = (struct idpf_ctlq_msg **)
			idpf_calloc(hw, qinfo->len,
				    sizeof(struct idpf_ctlq_msg *));
		if (!cq->bi.tx_msg) {
			status = -ENOMEM;
			goto init_dealloc_q_mem;
		}
	}

	idpf_ctlq_setup_regs(cq, qinfo);

	idpf_ctlq_init_regs(hw, cq, is_rxq);