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From: Wei Zhao <wei.zhao1@intel.com>
To: dev@dpdk.org
Cc: qi.z.zhang@intel.com, Wei Zhao <wei.zhao1@intel.com>
Subject: [dpdk-dev] [PATCH v5] net/fm10k: add support for check descriptor status APIs
Date: Wed, 27 Jun 2018 16:26:44 +0800	[thread overview]
Message-ID: <1530088004-64522-1-git-send-email-wei.zhao1@intel.com> (raw)
In-Reply-To: <1529655607-38664-1-git-send-email-wei.zhao1@intel.com>

rte_eth_rx_descritpr_status and rte_eth_tx_descriptor_status
are supported by fm10K.

Signed-off-by: Wei Zhao <wei.zhao1@intel.com>
---

v2:
-fix DD check error in tx descriptor

v3:
-fix DD check index error

v4:
-fix error in RS bit list poll

v5:
-rebase code to branch and delete useless variable
---
 doc/guides/rel_notes/release_18_08.rst |  6 +++
 drivers/net/fm10k/fm10k.h              |  7 +++
 drivers/net/fm10k/fm10k_ethdev.c       |  2 +
 drivers/net/fm10k/fm10k_rxtx.c         | 78 ++++++++++++++++++++++++++++++++++
 4 files changed, 93 insertions(+)

diff --git a/doc/guides/rel_notes/release_18_08.rst b/doc/guides/rel_notes/release_18_08.rst
index bc01242..951d1aa 100644
--- a/doc/guides/rel_notes/release_18_08.rst
+++ b/doc/guides/rel_notes/release_18_08.rst
@@ -46,6 +46,12 @@ New Features
   Flow API support has been added to CXGBE Poll Mode Driver to offload
   flows to Chelsio T5/T6 NICs.
 
+* **Added fm10k ethernet driver to support check descriptor status APIs.**
+
+    Fm10k nic need to support check descriptor status APIs, they are
+    rte_eth_rx_descriptor_status and rte_eth_tx_descriptor_status.
+    add ops pointer with new function which enable feature.
+
 
 API Changes
 -----------
diff --git a/drivers/net/fm10k/fm10k.h b/drivers/net/fm10k/fm10k.h
index ef30780..1bc2c18 100644
--- a/drivers/net/fm10k/fm10k.h
+++ b/drivers/net/fm10k/fm10k.h
@@ -329,6 +329,13 @@ 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 3ff1b0e..ea2f2bf 100644
--- a/drivers/net/fm10k/fm10k_ethdev.c
+++ b/drivers/net/fm10k/fm10k_ethdev.c
@@ -2837,6 +2837,8 @@ 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..4a5b46e 100644
--- a/drivers/net/fm10k/fm10k_rxtx.c
+++ b/drivers/net/fm10k/fm10k_rxtx.c
@@ -389,6 +389,84 @@ 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;
+	uint16_t next_rs = txq->nb_desc;
+	struct fifo rs_tracker = txq->rs_tracker;
+	struct fifo *r = &rs_tracker;
+
+	if (unlikely(offset >= txq->nb_desc))
+		return -EINVAL;
+
+	desc = txq->next_free + offset;
+	/* go to next desc that has the RS bit */
+	desc = (desc / txq->rs_thresh + 1) *
+		txq->rs_thresh - 1;
+
+	if (desc >= txq->nb_desc) {
+		desc -= txq->nb_desc;
+		if (desc >= txq->nb_desc)
+			desc -= txq->nb_desc;
+	}
+
+	r->head = r->list;
+	for ( ; r->head != r->endp; ) {
+		if (*r->head >= desc && *r->head < next_rs)
+			next_rs = *r->head;
+		++r->head;
+	}
+
+	txdp = &txq->hw_ring[next_rs];
+	if (txdp->flags & FM10K_TXD_FLAG_DONE)
+		return RTE_ETH_TX_DESC_DONE;
+
+	return RTE_ETH_TX_DESC_FULL;
+}
+
 /*
  * Free multiple TX mbuf at a time if they are in the same pool
  *
-- 
2.7.5

  parent reply	other threads:[~2018-06-27  8:47 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-02-08  8:36 [dpdk-dev] [PATCH 0/2] " Wei Zhao
2018-02-08  8:36 ` [dpdk-dev] [PATCH 1/2] net/e1000: " Wei Zhao
2018-06-20  8:52   ` [dpdk-dev] [PATCH v2] " Wei Zhao
2018-06-27  8:37     ` [dpdk-dev] [PATCH v3] " Wei Zhao
2018-06-29  1:52       ` [dpdk-dev] [PATCH v4] " Wei Zhao
2018-07-02  7:42         ` Zhao1, Wei
2018-07-02 13:03           ` Zhang, Qi Z
2018-07-02 13:12             ` Zhang, Qi Z
2018-02-08  8:36 ` [dpdk-dev] [PATCH 2/2] net/fm10k: " Wei Zhao
2018-06-20  8:44   ` [dpdk-dev] [PATCH v2] " Wei Zhao
2018-06-22  7:53     ` [dpdk-dev] [PATCH v3] " Wei Zhao
2018-06-22  8:20       ` [dpdk-dev] [PATCH v4] " Wei Zhao
2018-06-27  8:10         ` Zhang, Qi Z
2018-06-27  8:18           ` Zhao1, Wei
2018-06-27  8:18         ` Zhang, Qi Z
2018-06-27  9:09           ` Zhao1, Wei
2018-06-27  8:24         ` [dpdk-dev] [PATCH v5] " Wei Zhao
2018-06-27  8:26         ` Wei Zhao [this message]
2018-06-29  1:48           ` [dpdk-dev] [PATCH v6] " Wei Zhao
2018-06-29 11:03             ` Ferruh Yigit
2018-07-02  1:46               ` Zhao1, Wei
2018-07-02  7:15             ` [dpdk-dev] [PATCH v7] " Zhao Wei
2018-07-02 13:07               ` Zhang, Qi Z
2018-07-02 13:11                 ` Zhang, Qi Z
2018-06-27 12:49         ` [dpdk-dev] [PATCH v4] " Zhang, Qi Z
2018-06-29  1:22           ` Zhao1, Wei

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