[dpdk-stable] [PATCH v2 19.11.6 2/7] net/hns3: decrease non-nearby memory access in Rx

[Lijun Ou <oulijun@huawei.com>]

From: Chengchang Tang <tangchengchang@huawei.com>

[ upstream commit 8c7449779c4526d27205043560a21f0e2c2f622b ]

Currently, hns3 PMD driver needs know the PVID configuration state and
do different processing in the 'rx_pkt_burst' ops implementation
function.

This patch adds a member to struct hns3_rx_queue/hns3_tx_queue of the
driver to indicate the PVID configuration status, so it isn't need
to access other data structure in the 'rx_pkt_burst' ops implementation,
to avoid performance loss because of reducing cache miss.

Signed-off-by: Chengchang Tang <tangchengchang@huawei.com>
Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
---
 drivers/net/hns3/hns3_ethdev.c | 21 ++++++++++++++++++++-
 drivers/net/hns3/hns3_rxtx.c   | 37 +++++++++++++++++++++++++++++++------
 drivers/net/hns3/hns3_rxtx.h   | 13 +++++++++++++
 3 files changed, 64 insertions(+), 7 deletions(-)

diff --git a/drivers/net/hns3/hns3_ethdev.c b/drivers/net/hns3/hns3_ethdev.c
index f2702e0..3a92bd4 100644
--- a/drivers/net/hns3/hns3_ethdev.c
+++ b/drivers/net/hns3/hns3_ethdev.c
@@ -895,6 +895,8 @@ hns3_vlan_pvid_set(struct rte_eth_dev *dev, uint16_t pvid, int on)
 {
 	struct hns3_adapter *hns = dev->data->dev_private;
 	struct hns3_hw *hw = &hns->hw;
+	bool pvid_en_state_change;
+	uint16_t pvid_state;
 	int ret;
 
 	if (pvid > RTE_ETHER_MAX_VLAN_ID) {
@@ -903,10 +905,27 @@ hns3_vlan_pvid_set(struct rte_eth_dev *dev, uint16_t pvid, int on)
 		return -EINVAL;
 	}
 
+	/*
+	 * If PVID configuration state change, should refresh the PVID
+	 * configuration state in struct hns3_tx_queue/hns3_rx_queue.
+	 */
+	pvid_state = hw->port_base_vlan_cfg.state;
+	if ((on && pvid_state == HNS3_PORT_BASE_VLAN_ENABLE) ||
+	    (!on && pvid_state == HNS3_PORT_BASE_VLAN_DISABLE))
+		pvid_en_state_change = false;
+	else
+		pvid_en_state_change = true;
+
 	rte_spinlock_lock(&hw->lock);
 	ret = hns3_vlan_pvid_configure(hns, pvid, on);
 	rte_spinlock_unlock(&hw->lock);
-	return ret;
+	if (ret)
+		return ret;
+
+	if (pvid_en_state_change)
+		hns3_update_all_queues_pvid_state(hw);
+
+	return 0;
 }
 
 static int
diff --git a/drivers/net/hns3/hns3_rxtx.c b/drivers/net/hns3/hns3_rxtx.c
index ffd8417..53b98cd 100644
--- a/drivers/net/hns3/hns3_rxtx.c
+++ b/drivers/net/hns3/hns3_rxtx.c
@@ -316,6 +316,31 @@ hns3_init_tx_queue_hw(struct hns3_tx_queue *txq)
 }
 
 void
+hns3_update_all_queues_pvid_state(struct hns3_hw *hw)
+{
+	uint16_t nb_rx_q = hw->data->nb_rx_queues;
+	uint16_t nb_tx_q = hw->data->nb_tx_queues;
+	struct hns3_rx_queue *rxq;
+	struct hns3_tx_queue *txq;
+	int pvid_state;
+	int i;
+
+	pvid_state = hw->port_base_vlan_cfg.state;
+	for (i = 0; i < hw->cfg_max_queues; i++) {
+		if (i < nb_rx_q) {
+			rxq = hw->data->rx_queues[i];
+			if (rxq != NULL)
+				rxq->pvid_state = pvid_state;
+		}
+		if (i < nb_tx_q) {
+			txq = hw->data->tx_queues[i];
+			if (txq != NULL)
+				txq->pvid_state = pvid_state;
+		}
+	}
+}
+
+void
 hns3_enable_all_queues(struct hns3_hw *hw, bool en)
 {
 	uint16_t nb_rx_q = hw->data->nb_rx_queues;
@@ -1275,6 +1300,7 @@ hns3_rx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t nb_desc,
 	rxq->pkt_first_seg = NULL;
 	rxq->pkt_last_seg = NULL;
 	rxq->port_id = dev->data->port_id;
+	rxq->pvid_state = hw->port_base_vlan_cfg.state;
 	rxq->configured = true;
 	rxq->io_base = (void *)((char *)hw->io_base + HNS3_TQP_REG_OFFSET +
 				idx * HNS3_TQP_REG_SIZE);
@@ -1503,7 +1529,7 @@ hns3_rx_set_cksum_flag(struct rte_mbuf *rxm, uint64_t packet_type,
 }
 
 static inline void
-hns3_rxd_to_vlan_tci(struct rte_eth_dev *dev, struct rte_mbuf *mb,
+hns3_rxd_to_vlan_tci(struct hns3_rx_queue *rxq, struct rte_mbuf *mb,
 		     uint32_t l234_info, const struct hns3_desc *rxd)
 {
 #define HNS3_STRP_STATUS_NUM		0x4
@@ -1511,8 +1537,6 @@ hns3_rxd_to_vlan_tci(struct rte_eth_dev *dev, struct rte_mbuf *mb,
 #define HNS3_NO_STRP_VLAN_VLD		0x0
 #define HNS3_INNER_STRP_VLAN_VLD	0x1
 #define HNS3_OUTER_STRP_VLAN_VLD	0x2
-	struct hns3_adapter *hns = dev->data->dev_private;
-	struct hns3_hw *hw = &hns->hw;
 	uint32_t strip_status;
 	uint32_t report_mode;
 
@@ -1538,7 +1562,7 @@ hns3_rxd_to_vlan_tci(struct rte_eth_dev *dev, struct rte_mbuf *mb,
 	};
 	strip_status = hns3_get_field(l234_info, HNS3_RXD_STRP_TAGP_M,
 				      HNS3_RXD_STRP_TAGP_S);
-	report_mode = report_type[hw->port_base_vlan_cfg.state][strip_status];
+	report_mode = report_type[rxq->pvid_state][strip_status];
 	switch (report_mode) {
 	case HNS3_NO_STRP_VLAN_VLD:
 		mb->vlan_tci = 0;
@@ -1583,7 +1607,6 @@ hns3_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
 	nb_rx = 0;
 	nb_rx_bd = 0;
 	rxq = rx_queue;
-	dev = &rte_eth_devices[rxq->port_id];
 
 	rx_id = rxq->next_to_clean;
 	rx_ring = rxq->rx_ring;
@@ -1660,6 +1683,7 @@ hns3_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
 
 		nmb = rte_mbuf_raw_alloc(rxq->mb_pool);
 		if (unlikely(nmb == NULL)) {
+			dev = &rte_eth_devices[rxq->port_id];
 			dev->data->rx_mbuf_alloc_failed++;
 			break;
 		}
@@ -1729,7 +1753,7 @@ hns3_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
 			hns3_rx_set_cksum_flag(first_seg,
 					       first_seg->packet_type,
 					       cksum_err);
-		hns3_rxd_to_vlan_tci(dev, first_seg, l234_info, &rxd);
+		hns3_rxd_to_vlan_tci(rxq, first_seg, l234_info, &rxd);
 
 		rx_pkts[nb_rx++] = first_seg;
 		first_seg = NULL;
@@ -1807,6 +1831,7 @@ hns3_tx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t nb_desc,
 	txq->next_to_clean = 0;
 	txq->tx_bd_ready = txq->nb_tx_desc - 1;
 	txq->port_id = dev->data->port_id;
+	txq->pvid_state = hw->port_base_vlan_cfg.state;
 	txq->configured = true;
 	txq->io_base = (void *)((char *)hw->io_base + HNS3_TQP_REG_OFFSET +
 				idx * HNS3_TQP_REG_SIZE);
diff --git a/drivers/net/hns3/hns3_rxtx.h b/drivers/net/hns3/hns3_rxtx.h
index 1fd1afd..a416d10 100644
--- a/drivers/net/hns3/hns3_rxtx.h
+++ b/drivers/net/hns3/hns3_rxtx.h
@@ -250,6 +250,12 @@ struct hns3_rx_queue {
 	uint16_t rx_buf_len;
 	uint16_t rx_free_thresh;
 
+	/*
+	 * port based vlan configuration state.
+	 * value range: HNS3_PORT_BASE_VLAN_DISABLE / HNS3_PORT_BASE_VLAN_ENABLE
+	 */
+	uint16_t pvid_state;
+
 	bool rx_deferred_start; /* don't start this queue in dev start */
 	bool configured;        /* indicate if rx queue has been configured */
 
@@ -276,6 +282,12 @@ struct hns3_tx_queue {
 	uint16_t next_to_use;
 	uint16_t tx_bd_ready;
 
+	/*
+	 * port based vlan configuration state.
+	 * value range: HNS3_PORT_BASE_VLAN_DISABLE / HNS3_PORT_BASE_VLAN_ENABLE
+	 */
+	uint16_t pvid_state;
+
 	bool tx_deferred_start; /* don't start this queue in dev start */
 	bool configured;        /* indicate if tx queue has been configured */
 };
@@ -336,5 +348,6 @@ void hns3_set_queue_intr_rl(struct hns3_hw *hw, uint16_t queue_id,
 			    uint16_t rl_value);
 int hns3_set_fake_rx_or_tx_queues(struct rte_eth_dev *dev, uint16_t nb_rx_q,
 				  uint16_t nb_tx_q);
+void hns3_update_all_queues_pvid_state(struct hns3_hw *hw);
 
 #endif /* _HNS3_RXTX_H_ */
-- 
2.7.4