[dpdk-dev] [PATCH v1 3/3] net/axgbe: support for rxq and txq descriptor status API

[asomalap@amd.com]

From: Amaranath Somalapuram <asomalap@amd.com>

Adding API axgbe_dev_rx_descriptor_status, axgbe_dev_tx_descriptor_status

Signed-off-by: Amaranath Somalapuram <asomalap@amd.com>
---
 drivers/net/axgbe/axgbe_ethdev.c |  2 ++
 drivers/net/axgbe/axgbe_rxtx.c   | 46 ++++++++++++++++++++++++++++++++
 drivers/net/axgbe/axgbe_rxtx.h   |  2 ++
 3 files changed, 50 insertions(+)

diff --git a/drivers/net/axgbe/axgbe_ethdev.c b/drivers/net/axgbe/axgbe_ethdev.c
index 70b198f79..58facee6a 100644
--- a/drivers/net/axgbe/axgbe_ethdev.c
+++ b/drivers/net/axgbe/axgbe_ethdev.c
@@ -178,6 +178,8 @@ static const struct eth_dev_ops axgbe_eth_dev_ops = {
 	.rxq_info_get                 = axgbe_rxq_info_get,
 	.txq_info_get                 = axgbe_txq_info_get,
 	.dev_supported_ptypes_get     = axgbe_dev_supported_ptypes_get,
+	.rx_descriptor_status         = axgbe_dev_rx_descriptor_status,
+	.tx_descriptor_status         = axgbe_dev_tx_descriptor_status,
 };
 
 static int axgbe_phy_reset(struct axgbe_port *pdata)
diff --git a/drivers/net/axgbe/axgbe_rxtx.c b/drivers/net/axgbe/axgbe_rxtx.c
index 96055c25b..cd02bc044 100644
--- a/drivers/net/axgbe/axgbe_rxtx.c
+++ b/drivers/net/axgbe/axgbe_rxtx.c
@@ -673,3 +673,49 @@ void axgbe_dev_clear_queues(struct rte_eth_dev *dev)
 		}
 	}
 }
+
+int
+axgbe_dev_rx_descriptor_status(void *rx_queue, uint16_t offset)
+{
+	struct axgbe_rx_queue *rxq = rx_queue;
+	volatile union axgbe_rx_desc *desc;
+	uint16_t idx;
+
+
+	if (unlikely(offset >= rxq->nb_desc))
+		return -EINVAL;
+
+	if (offset >= rxq->nb_desc - rxq->dirty)
+		return RTE_ETH_RX_DESC_UNAVAIL;
+
+	idx = AXGBE_GET_DESC_IDX(rxq, rxq->cur);
+	desc = &rxq->desc[idx + offset];
+
+	if (!AXGMAC_GET_BITS_LE(desc->write.desc3, RX_NORMAL_DESC3, OWN))
+		return RTE_ETH_RX_DESC_DONE;
+
+	return RTE_ETH_RX_DESC_AVAIL;
+}
+
+int
+axgbe_dev_tx_descriptor_status(void *tx_queue, uint16_t offset)
+{
+	struct axgbe_tx_queue *txq = tx_queue;
+	volatile struct axgbe_tx_desc *desc;
+	uint16_t idx;
+
+
+	if (unlikely(offset >= txq->nb_desc))
+		return -EINVAL;
+
+	if (offset >= txq->nb_desc - txq->dirty)
+		return RTE_ETH_TX_DESC_UNAVAIL;
+
+	idx = AXGBE_GET_DESC_IDX(txq, txq->dirty + txq->free_batch_cnt - 1);
+	desc = &txq->desc[idx + offset];
+
+	if (!AXGMAC_GET_BITS_LE(desc->desc3, TX_NORMAL_DESC3, OWN))
+		return RTE_ETH_TX_DESC_DONE;
+
+	return RTE_ETH_TX_DESC_FULL;
+}
diff --git a/drivers/net/axgbe/axgbe_rxtx.h b/drivers/net/axgbe/axgbe_rxtx.h
index a21537df9..933312078 100644
--- a/drivers/net/axgbe/axgbe_rxtx.h
+++ b/drivers/net/axgbe/axgbe_rxtx.h
@@ -183,5 +183,7 @@ uint16_t axgbe_recv_pkts_threshold_refresh(void *rx_queue,
 					   struct rte_mbuf **rx_pkts,
 					   uint16_t nb_pkts);
 void axgbe_dev_clear_queues(struct rte_eth_dev *dev);
+int axgbe_dev_rx_descriptor_status(void *rx_queue, uint16_t offset);
+int axgbe_dev_tx_descriptor_status(void *tx_queue, uint16_t offset);
 
 #endif /* _AXGBE_RXTX_H_ */
-- 
2.17.1