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From: Di ChenxuX <chenxux.di@intel.com>
To: dev@dpdk.org
Cc: qiming.yang@intel.com, Di ChenxuX <chenxux.di@intel.com>
Subject: [dpdk-dev] [PATCH 3/4] net/ice: cleanup Tx buffers
Date: Thu, 26 Sep 2019 09:29:32 +0000
Message-ID: <20190926092933.79683-4-chenxux.di@intel.com> (raw)
In-Reply-To: <20190926092933.79683-1-chenxux.di@intel.com>

Add support to the ice driver for the API rte_eth_tx_done_cleanup
 to force free consumed buffers on Tx ring.

Signed-off-by: Di ChenxuX <chenxux.di@intel.com>
---
 drivers/net/ice/ice_ethdev.c |  1 +
 drivers/net/ice/ice_rxtx.c   | 41 ++++++++++++++++++++++++++++++++++++
 drivers/net/ice/ice_rxtx.h   |  1 +
 3 files changed, 43 insertions(+)

diff --git a/drivers/net/ice/ice_ethdev.c b/drivers/net/ice/ice_ethdev.c
index 63997fdfb..617f7b2ac 100644
--- a/drivers/net/ice/ice_ethdev.c
+++ b/drivers/net/ice/ice_ethdev.c
@@ -160,6 +160,7 @@ static const struct eth_dev_ops ice_eth_dev_ops = {
 	.filter_ctrl                  = ice_dev_filter_ctrl,
 	.udp_tunnel_port_add          = ice_dev_udp_tunnel_port_add,
 	.udp_tunnel_port_del          = ice_dev_udp_tunnel_port_del,
+	.tx_done_cleanup              = ice_tx_done_cleanup,
 };
 
 /* store statistics names and its offset in stats structure */
diff --git a/drivers/net/ice/ice_rxtx.c b/drivers/net/ice/ice_rxtx.c
index 81af81441..f991cb6c0 100644
--- a/drivers/net/ice/ice_rxtx.c
+++ b/drivers/net/ice/ice_rxtx.c
@@ -579,6 +579,47 @@ ice_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id)
 	return 0;
 }
 
+
+int ice_tx_done_cleanup(void *txq, uint32_t free_cnt)
+{
+	struct ice_tx_queue *q = (struct ice_tx_queue *)txq;
+	struct ice_tx_entry *sw_ring;
+	uint16_t tx_id;    /* Current segment being processed. */
+	uint16_t tx_cleaned;
+
+	int count = 0;
+
+	if (q == NULL)
+		return -ENODEV;
+
+	sw_ring = q->sw_ring;
+	tx_cleaned = q->last_desc_cleaned;
+	tx_id = sw_ring[q->last_desc_cleaned].next_id;
+	if ((q->tx_ring[tx_id].cmd_type_offset_bsz &
+			rte_cpu_to_le_64(ICE_TXD_QW1_DTYPE_M)) !=
+			rte_cpu_to_le_64(ICE_TX_DESC_DTYPE_DESC_DONE))
+		return 0;
+
+	do {
+		if (sw_ring[tx_id].mbuf == NULL)
+			break;
+
+		rte_pktmbuf_free_seg(sw_ring[tx_id].mbuf);
+		sw_ring[tx_id].mbuf = NULL;
+		sw_ring[tx_id].last_id = tx_id;
+
+		/* Move to next segemnt. */
+		tx_cleaned = tx_id;
+		tx_id = sw_ring[tx_id].next_id;
+		count++;
+	} while (count != (int)free_cnt);
+
+	q->nb_tx_free += (uint16_t)count;
+	q->last_desc_cleaned = tx_cleaned;
+
+	return count;
+}
+
 int
 ice_rx_queue_setup(struct rte_eth_dev *dev,
 		   uint16_t queue_idx,
diff --git a/drivers/net/ice/ice_rxtx.h b/drivers/net/ice/ice_rxtx.h
index e9214110c..1ac3f3f91 100644
--- a/drivers/net/ice/ice_rxtx.h
+++ b/drivers/net/ice/ice_rxtx.h
@@ -170,6 +170,7 @@ int ice_rx_descriptor_status(void *rx_queue, uint16_t offset);
 int ice_tx_descriptor_status(void *tx_queue, uint16_t offset);
 void ice_set_default_ptype_table(struct rte_eth_dev *dev);
 const uint32_t *ice_dev_supported_ptypes_get(struct rte_eth_dev *dev);
+int ice_tx_done_cleanup(void *txq, uint32_t free_cnt);
 
 int ice_rx_vec_dev_check(struct rte_eth_dev *dev);
 int ice_tx_vec_dev_check(struct rte_eth_dev *dev);
-- 
2.17.1


  parent reply index

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-26  9:29 [dpdk-dev] [PATCH 0/4] drivers/net: " Di ChenxuX
2019-09-26  9:29 ` [dpdk-dev] [PATCH 1/4] net/fm10k: " Di ChenxuX
2019-09-26 10:37   ` Gavin Hu (Arm Technology China)
2019-09-26  9:29 ` [dpdk-dev] [PATCH 2/4] net/i40e: " Di ChenxuX
2019-09-26 10:36   ` Gavin Hu (Arm Technology China)
2019-09-26  9:29 ` Di ChenxuX [this message]
2019-09-26  9:29 ` [dpdk-dev] [PATCH 4/4] net/ixgbe: " Di ChenxuX
2019-12-03  5:51 [dpdk-dev] [PATCH 0/4] drivers/net: " Chenxu Di
2019-12-03  5:51 ` [dpdk-dev] [PATCH 3/4] net/ice: " Chenxu Di

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