From 9e0cd6d469351131e473edc8a9dbbcd70890519f Mon Sep 17 00:00:00 2001
From: Huisong Li <lihuisong@huawei.com>
Date: Sat, 11 Feb 2023 17:18:28 +0800
Subject: net/hns3: separate Tx prepare from getting Tx function

[ upstream commit 6a934ba4c6c48691b119a878981a4e3748766518 ]

Separate getting tx prepare from hns3_get_tx_function by extracting
an independent function.

Fixes: d7ec2c076579 ("net/hns3: select Tx prepare based on Tx offload")
Cc: stable@dpdk.org

Signed-off-by: Huisong Li <lihuisong@huawei.com>
Signed-off-by: Dongdong Liu <liudongdong3@huawei.com>
---
 drivers/net/hns3/hns3_rxtx.c | 32 ++++++++++++++------------------
 drivers/net/hns3/hns3_rxtx.h |  3 +--
 2 files changed, 15 insertions(+), 20 deletions(-)

diff --git a/drivers/net/hns3/hns3_rxtx.c b/drivers/net/hns3/hns3_rxtx.c
index 9fc54d50f1..2dba4d8120 100644
--- a/drivers/net/hns3/hns3_rxtx.c
+++ b/drivers/net/hns3/hns3_rxtx.c
@@ -4324,26 +4324,30 @@ hns3_get_tx_prep_needed(struct rte_eth_dev *dev)
 		RTE_ETH_TX_OFFLOAD_GENEVE_TNL_TSO)
 
 	uint64_t tx_offload = dev->data->dev_conf.txmode.offloads;
+
 	if (tx_offload & HNS3_DEV_TX_CSKUM_TSO_OFFLOAD_MASK)
 		return true;
 
 	return false;
 }
 
+static eth_tx_prep_t
+hns3_get_tx_prepare(struct rte_eth_dev *dev)
+{
+	return hns3_get_tx_prep_needed(dev) ? hns3_prep_pkts : NULL;
+}
+
 eth_tx_burst_t
-hns3_get_tx_function(struct rte_eth_dev *dev, eth_tx_prep_t *prep)
+hns3_get_tx_function(struct rte_eth_dev *dev)
 {
 	struct hns3_adapter *hns = dev->data->dev_private;
 	bool vec_allowed, sve_allowed, simple_allowed;
-	bool vec_support, tx_prepare_needed;
+	bool vec_support;
 
 	vec_support = hns3_tx_check_vec_support(dev) == 0;
 	vec_allowed = vec_support && hns3_get_default_vec_support();
 	sve_allowed = vec_support && hns3_get_sve_support();
 	simple_allowed = hns3_tx_check_simple_support(dev);
-	tx_prepare_needed = hns3_get_tx_prep_needed(dev);
-
-	*prep = NULL;
 
 	if (hns->tx_func_hint == HNS3_IO_FUNC_HINT_VEC && vec_allowed)
 		return hns3_xmit_pkts_vec;
@@ -4351,19 +4355,14 @@ hns3_get_tx_function(struct rte_eth_dev *dev, eth_tx_prep_t *prep)
 		return hns3_xmit_pkts_vec_sve;
 	if (hns->tx_func_hint == HNS3_IO_FUNC_HINT_SIMPLE && simple_allowed)
 		return hns3_xmit_pkts_simple;
-	if (hns->tx_func_hint == HNS3_IO_FUNC_HINT_COMMON) {
-		if (tx_prepare_needed)
-			*prep = hns3_prep_pkts;
+	if (hns->tx_func_hint == HNS3_IO_FUNC_HINT_COMMON)
 		return hns3_xmit_pkts;
-	}
 
 	if (vec_allowed)
 		return hns3_xmit_pkts_vec;
 	if (simple_allowed)
 		return hns3_xmit_pkts_simple;
 
-	if (tx_prepare_needed)
-		*prep = hns3_prep_pkts;
 	return hns3_xmit_pkts;
 }
 
@@ -4403,7 +4402,6 @@ hns3_set_rxtx_function(struct rte_eth_dev *eth_dev)
 {
 	struct hns3_hw *hw = HNS3_DEV_PRIVATE_TO_HW(eth_dev->data->dev_private);
 	struct hns3_adapter *hns = eth_dev->data->dev_private;
-	eth_tx_prep_t prep = NULL;
 
 	if (hns->hw.adapter_state == HNS3_NIC_STARTED &&
 	    __atomic_load_n(&hns->hw.reset.resetting, __ATOMIC_RELAXED) == 0) {
@@ -4411,8 +4409,8 @@ hns3_set_rxtx_function(struct rte_eth_dev *eth_dev)
 		eth_dev->rx_descriptor_status = hns3_dev_rx_descriptor_status;
 		eth_dev->tx_pkt_burst = hw->set_link_down ?
 					rte_eth_pkt_burst_dummy :
-					hns3_get_tx_function(eth_dev, &prep);
-		eth_dev->tx_pkt_prepare = prep;
+					hns3_get_tx_function(eth_dev);
+		eth_dev->tx_pkt_prepare = hns3_get_tx_prepare(eth_dev);
 		eth_dev->tx_descriptor_status = hns3_dev_tx_descriptor_status;
 	} else {
 		eth_dev->rx_pkt_burst = rte_eth_pkt_burst_dummy;
@@ -4758,10 +4756,8 @@ hns3_stop_tx_datapath(struct rte_eth_dev *dev)
 void
 hns3_start_tx_datapath(struct rte_eth_dev *dev)
 {
-	eth_tx_prep_t prep = NULL;
-
-	dev->tx_pkt_burst = hns3_get_tx_function(dev, &prep);
-	dev->tx_pkt_prepare = prep;
+	dev->tx_pkt_burst = hns3_get_tx_function(dev);
+	dev->tx_pkt_prepare = hns3_get_tx_prepare(dev);
 	hns3_eth_dev_fp_ops_config(dev);
 
 	if (rte_eal_process_type() == RTE_PROC_SECONDARY)
diff --git a/drivers/net/hns3/hns3_rxtx.h b/drivers/net/hns3/hns3_rxtx.h
index ea1a805491..38c3581312 100644
--- a/drivers/net/hns3/hns3_rxtx.h
+++ b/drivers/net/hns3/hns3_rxtx.h
@@ -740,8 +740,7 @@ int hns3_tx_burst_mode_get(struct rte_eth_dev *dev,
 const uint32_t *hns3_dev_supported_ptypes_get(struct rte_eth_dev *dev);
 void hns3_init_rx_ptype_tble(struct rte_eth_dev *dev);
 void hns3_set_rxtx_function(struct rte_eth_dev *eth_dev);
-eth_tx_burst_t hns3_get_tx_function(struct rte_eth_dev *dev,
-				    eth_tx_prep_t *prep);
+eth_tx_burst_t hns3_get_tx_function(struct rte_eth_dev *dev);
 
 uint32_t hns3_get_tqp_intr_reg_offset(uint16_t tqp_intr_id);
 void hns3_set_queue_intr_gl(struct hns3_hw *hw, uint16_t queue_id,
-- 
2.23.0