diff mbox

[dpdk-dev,2/2] net/fm10k: add support for check descriptor status APIs

Message ID 20180208083630.103388-3-wei.zhao1@intel.com (mailing list archive)
State Superseded, archived
Delegated to: Helin Zhang
Headers

Checks

Context Check Description
ci/checkpatch success coding style OK
ci/Intel-compilation success Compilation OK

Commit Message

Zhao1, Wei Feb. 8, 2018, 8:36 a.m. UTC 
  Fm10k nic need to support check descriptor status APIs, they are
rte_eth_rx_descriptor_status and rte_eth_tx_descriptor_status.
So, this patch add ops with function pointer that enable feature.

Signed-off-by: Wei Zhao <wei.zhao1@intel.com>
---
 drivers/net/fm10k/fm10k.h        |  7 +++++
 drivers/net/fm10k/fm10k_ethdev.c |  2 ++
 drivers/net/fm10k/fm10k_rxtx.c   | 65 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 74 insertions(+)
diff mbox

Patch

diff --git a/drivers/net/fm10k/fm10k.h b/drivers/net/fm10k/fm10k.h
index 30dad3e..65dc0bd 100644
--- a/drivers/net/fm10k/fm10k.h
+++ b/drivers/net/fm10k/fm10k.h
@@ -328,6 +328,13 @@  uint16_t fm10k_recv_scattered_pkts(void *rx_queue,
 int
 fm10k_dev_rx_descriptor_done(void *rx_queue, uint16_t offset);
 
+int
+fm10k_dev_rx_descriptor_status(void *rx_queue, uint16_t offset);
+
+int
+fm10k_dev_tx_descriptor_status(void *rx_queue, uint16_t offset);
+
+
 uint16_t fm10k_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
 	uint16_t nb_pkts);
 
diff --git a/drivers/net/fm10k/fm10k_ethdev.c b/drivers/net/fm10k/fm10k_ethdev.c
index 9423761..9293828 100644
--- a/drivers/net/fm10k/fm10k_ethdev.c
+++ b/drivers/net/fm10k/fm10k_ethdev.c
@@ -2784,6 +2784,8 @@  static const struct eth_dev_ops fm10k_eth_dev_ops = {
 	.tx_queue_setup		= fm10k_tx_queue_setup,
 	.tx_queue_release	= fm10k_tx_queue_release,
 	.rx_descriptor_done	= fm10k_dev_rx_descriptor_done,
+	.rx_descriptor_status = fm10k_dev_rx_descriptor_status,
+	.tx_descriptor_status = fm10k_dev_tx_descriptor_status,
 	.rx_queue_intr_enable	= fm10k_dev_rx_queue_intr_enable,
 	.rx_queue_intr_disable	= fm10k_dev_rx_queue_intr_disable,
 	.reta_update		= fm10k_reta_update,
diff --git a/drivers/net/fm10k/fm10k_rxtx.c b/drivers/net/fm10k/fm10k_rxtx.c
index 9320748..fa4f028 100644
--- a/drivers/net/fm10k/fm10k_rxtx.c
+++ b/drivers/net/fm10k/fm10k_rxtx.c
@@ -389,6 +389,71 @@  fm10k_dev_rx_descriptor_done(void *rx_queue, uint16_t offset)
 	return ret;
 }
 
+int
+fm10k_dev_rx_descriptor_status(void *rx_queue, uint16_t offset)
+{
+	volatile union fm10k_rx_desc *rxdp;
+	struct fm10k_rx_queue *rxq = rx_queue;
+	uint16_t nb_hold, trigger_last;
+	uint16_t desc;
+	int ret;
+
+	if (unlikely(offset >= rxq->nb_desc)) {
+		PMD_DRV_LOG(ERR, "Invalid RX descriptor offset %u", offset);
+		return 0;
+	}
+
+	if (rxq->next_trigger < rxq->alloc_thresh)
+		trigger_last = rxq->next_trigger +
+					rxq->nb_desc - rxq->alloc_thresh;
+	else
+		trigger_last = rxq->next_trigger - rxq->alloc_thresh;
+
+	if (rxq->next_dd < trigger_last)
+		nb_hold = rxq->next_dd + rxq->nb_desc - trigger_last;
+	else
+		nb_hold = rxq->next_dd - trigger_last;
+
+	if (offset >= rxq->nb_desc - nb_hold)
+		return RTE_ETH_RX_DESC_UNAVAIL;
+
+	desc = rxq->next_dd + offset;
+	if (desc >= rxq->nb_desc)
+		desc -= rxq->nb_desc;
+
+	rxdp = &rxq->hw_ring[desc];
+
+	ret = !!(rxdp->w.status &
+			rte_cpu_to_le_16(FM10K_RXD_STATUS_DD));
+
+	return ret;
+}
+
+int
+fm10k_dev_tx_descriptor_status(void *tx_queue, uint16_t offset)
+{
+	volatile struct fm10k_tx_desc *txdp;
+	struct fm10k_tx_queue *txq = tx_queue;
+	uint16_t desc;
+	int ret;
+
+	if (unlikely(offset >= txq->nb_desc)) {
+		PMD_DRV_LOG(ERR, "Invalid TX descriptor offset %u", offset);
+		return 0;
+	}
+
+	desc = txq->next_dd + offset;
+	if (desc >= txq->nb_desc)
+		desc -= txq->nb_desc;
+
+	txdp = &txq->hw_ring[desc];
+
+	ret = !!(txdp->flags &
+			rte_cpu_to_le_16(FM10K_TXD_FLAG_DONE));
+
+	return ret;
+}
+
 /*
  * Free multiple TX mbuf at a time if they are in the same pool
  *