Function t4_sge_alloc_rxq

dpdk/drivers/net/cxgbe/sge.c:1756–1976

* @intr_idx: MSI/MSI-X vector if >=0, -(absolute qid + 1) if < 0 * @cong: < 0 -> no congestion feedback, >= 0 -> congestion channel map */

 * @cong: < 0 -> no congestion feedback, >= 0 -> congestion channel map
 */
int t4_sge_alloc_rxq(struct adapter *adap, struct sge_rspq *iq, bool fwevtq,
		     struct rte_eth_dev *eth_dev, int intr_idx,
		     struct sge_fl *fl, rspq_handler_t hnd, int cong,
		     struct rte_mempool *mp, int queue_id, int socket_id)
{
	struct port_info *pi = eth_dev->data->dev_private;
	u8 pciechan, fl_buf_size_idx = 0;
	struct sge *s = &adap->sge;
	unsigned int nb_refill;
	struct fw_iq_cmd c;
	int ret, flsz = 0;

	if (fl != NULL) {
		ret = cxgbe_sge_fl_buf_size_index(adap, mp);
		if (ret < 0)
			return ret;

		fl_buf_size_idx = ret;
	}

	/* Size needs to be multiple of 16, including status entry. */
	iq->size = cxgbe_roundup(iq->size, 16);

	iq->desc = alloc_ring(eth_dev, fwevtq ? "fwq_ring" : "rx_ring",
			      queue_id, socket_id, iq->size, iq->iqe_len,
			      0, 0, &iq->phys_addr, NULL);
	if (!iq->desc)
		return -ENOMEM;

	memset(&c, 0, sizeof(c));
	c.op_to_vfn = htonl(V_FW_CMD_OP(FW_IQ_CMD) | F_FW_CMD_REQUEST |
			    F_FW_CMD_WRITE | F_FW_CMD_EXEC);

	if (is_pf4(adap)) {
		pciechan = pi->tx_chan;
		c.op_to_vfn |= htonl(V_FW_IQ_CMD_PFN(adap->pf) |
				     V_FW_IQ_CMD_VFN(0));
		if (cong >= 0)
			c.iqns_to_fl0congen =
				htonl(F_FW_IQ_CMD_IQFLINTCONGEN |
				      V_FW_IQ_CMD_IQTYPE(cong ?
							 FW_IQ_IQTYPE_NIC :
							 FW_IQ_IQTYPE_OFLD) |
				      F_FW_IQ_CMD_IQRO);
	} else {
		pciechan = pi->port_id;
	}

	c.alloc_to_len16 = htonl(F_FW_IQ_CMD_ALLOC | F_FW_IQ_CMD_IQSTART |
				 (sizeof(c) / 16));
	c.type_to_iqandstindex =
		htonl(V_FW_IQ_CMD_TYPE(FW_IQ_TYPE_FL_INT_CAP) |
		      V_FW_IQ_CMD_IQASYNCH(fwevtq) |
		      V_FW_IQ_CMD_VIID(pi->viid) |
		      V_FW_IQ_CMD_IQANDST(intr_idx < 0) |
		      V_FW_IQ_CMD_IQANUD(X_UPDATEDELIVERY_STATUS_PAGE) |
		      V_FW_IQ_CMD_IQANDSTINDEX(intr_idx >= 0 ? intr_idx :
							       -intr_idx - 1));