[dpdk-dev] [PATCH v4 16/24] net/bnxt: add support for tx_descriptor_status

[Ajit Khaparde <ajit.khaparde@broadcom.com>]

add support for tx_descriptor_status dev_op

Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
--
v1->v2: incorporate review comments.
---
 drivers/net/bnxt/bnxt_ethdev.c | 38 ++++++++++++++++++++++++++++++++++++++
 drivers/net/bnxt/bnxt_txr.c    |  3 +++
 2 files changed, 41 insertions(+)

diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
index 12888e6a9..97ddca069 100644
--- a/drivers/net/bnxt/bnxt_ethdev.c
+++ b/drivers/net/bnxt/bnxt_ethdev.c
@@ -1610,6 +1610,43 @@ bnxt_rx_descriptor_status_op(void *rx_queue, uint16_t offset)
 	return RTE_ETH_RX_DESC_AVAIL;
 }
 
+static int
+bnxt_tx_descriptor_status_op(void *tx_queue, uint16_t offset)
+{
+	struct bnxt_tx_queue *txq = (struct bnxt_tx_queue *)tx_queue;
+	struct bnxt_tx_ring_info *txr;
+	struct bnxt_cp_ring_info *cpr;
+	struct bnxt_sw_tx_bd *tx_buf;
+	struct tx_pkt_cmpl *txcmp;
+	uint32_t cons, cp_cons;
+
+	if (!txq)
+		return -EINVAL;
+
+	cpr = txq->cp_ring;
+	txr = txq->tx_ring;
+
+	if (offset >= txq->nb_tx_desc)
+		return -EINVAL;
+
+	cons = RING_CMP(cpr->cp_ring_struct, offset);
+	txcmp = (struct tx_pkt_cmpl *)&cpr->cp_desc_ring[cons];
+	cp_cons = cpr->cp_raw_cons;
+
+	if (cons > cp_cons) {
+		if (CMPL_VALID(txcmp, cpr->valid))
+			return RTE_ETH_TX_DESC_UNAVAIL;
+	} else {
+		if (CMPL_VALID(txcmp, !cpr->valid))
+			return RTE_ETH_TX_DESC_UNAVAIL;
+	}
+	tx_buf = &txr->tx_buf_ring[cons];
+	if (tx_buf->mbuf == NULL)
+		return RTE_ETH_TX_DESC_DONE;
+
+	return RTE_ETH_TX_DESC_FULL;
+}
+
 /*
  * Initialization
  */
@@ -1661,6 +1698,7 @@ static const struct eth_dev_ops bnxt_dev_ops = {
 	.xstats_get_names_by_id = bnxt_dev_xstats_get_names_by_id_op,
 	.rx_queue_count = bnxt_rx_queue_count_op,
 	.rx_descriptor_status = bnxt_rx_descriptor_status_op,
+	.tx_descriptor_status = bnxt_tx_descriptor_status_op,
 };
 
 static bool bnxt_vf_pciid(uint16_t id)
diff --git a/drivers/net/bnxt/bnxt_txr.c b/drivers/net/bnxt/bnxt_txr.c
index 60cc17405..8ca4bbd80 100644
--- a/drivers/net/bnxt/bnxt_txr.c
+++ b/drivers/net/bnxt/bnxt_txr.c
@@ -313,6 +313,9 @@ static int bnxt_handle_tx_cp(struct bnxt_tx_queue *txq)
 
 			if (!CMP_VALID(txcmp, raw_cons, cpr->cp_ring_struct))
 				break;
+			cpr->valid = FLIP_VALID(cons,
+						cpr->cp_ring_struct->ring_mask,
+						cpr->valid);
 
 			if (CMP_TYPE(txcmp) == TX_CMPL_TYPE_TX_L2)
 				nb_tx_pkts++;
-- 
2.13.5 (Apple Git-94)