Function bnxt_rx_descriptor_status_op

dpdk/drivers/net/bnxt/bnxt_ethdev.c:3238–3347

}

static int
bnxt_rx_descriptor_status_op(void *rx_queue, uint16_t offset)
{
	struct bnxt_rx_queue *rxq = rx_queue;
	struct bnxt_cp_ring_info *cpr;
	struct bnxt_rx_ring_info *rxr;
	uint32_t desc, raw_cons, cp_ring_size;
	struct bnxt *bp = rxq->bp;
	struct rx_pkt_cmpl *rxcmp;
	int rc;

	rc = is_bnxt_in_error(bp);
	if (rc)
		return rc;

	if (offset >= rxq->nb_rx_desc)
		return -EINVAL;

	rxr = rxq->rx_ring;
	cpr = rxq->cp_ring;
	cp_ring_size = cpr->cp_ring_struct->ring_size;

	/*
	 * For the vector receive case, the completion at the requested
	 * offset can be indexed directly.
	 */
#if defined(RTE_ARCH_X86) || defined(RTE_ARCH_ARM64)
	if (bp->flags & BNXT_FLAG_RX_VECTOR_PKT_MODE) {
		struct rx_pkt_cmpl *rxcmp;
		uint32_t cons;

		/* Check status of completion descriptor. */
		raw_cons = cpr->cp_raw_cons +
			   offset * CMP_LEN(CMPL_BASE_TYPE_RX_L2);
		cons = RING_CMP(cpr->cp_ring_struct, raw_cons);
		rxcmp = (struct rx_pkt_cmpl *)&cpr->cp_desc_ring[cons];

		if (bnxt_cpr_cmp_valid(rxcmp, raw_cons, cp_ring_size))
			return RTE_ETH_RX_DESC_DONE;

		/* Check whether rx desc has an mbuf attached. */
		cons = RING_CMP(rxr->rx_ring_struct, raw_cons / 2);
		if (cons >= rxq->rxrearm_start &&
		    cons < rxq->rxrearm_start + rxq->rxrearm_nb) {
			return RTE_ETH_RX_DESC_UNAVAIL;
		}

		return RTE_ETH_RX_DESC_AVAIL;
	}
#endif

	/*
	 * For the non-vector receive case, scan the completion ring to
	 * locate the completion descriptor for the requested offset.
	 */
	raw_cons = cpr->cp_raw_cons;
	desc = 0;
	while (1) {