[dpdk-dev] [PATCH v4 14/16] fm10k: Add function to decide best TX func

["Chen Jing D(Mark)" <jing.d.chen@intel.com>]

From: "Chen Jing D(Mark)" <jing.d.chen@intel.com>

Add func fm10k_set_tx_function to decide the best TX func in
fm10k_dev_tx_init.

Signed-off-by: Chen Jing D(Mark) <jing.d.chen@intel.com>
---
 drivers/net/fm10k/fm10k.h        |    1 +
 drivers/net/fm10k/fm10k_ethdev.c |   38 ++++++++++++++++++++++++++++++++++++--
 2 files changed, 37 insertions(+), 2 deletions(-)

diff --git a/drivers/net/fm10k/fm10k.h b/drivers/net/fm10k/fm10k.h
index bfb71da..8e2c6a4 100644
--- a/drivers/net/fm10k/fm10k.h
+++ b/drivers/net/fm10k/fm10k.h
@@ -224,6 +224,7 @@ struct fm10k_tx_queue {
 	uint16_t next_rs; /* Next pos to set RS flag */
 	uint16_t next_dd; /* Next pos to check DD flag */
 	volatile uint32_t *tail_ptr;
+	uint32_t txq_flags; /* Holds flags for this TXq */
 	uint16_t nb_desc;
 	uint8_t port_id;
 	uint8_t tx_deferred_start; /** < don't start this queue in dev start. */
diff --git a/drivers/net/fm10k/fm10k_ethdev.c b/drivers/net/fm10k/fm10k_ethdev.c
index 88bd887..469bd85 100644
--- a/drivers/net/fm10k/fm10k_ethdev.c
+++ b/drivers/net/fm10k/fm10k_ethdev.c
@@ -53,6 +53,9 @@
 #define CHARS_PER_UINT32 (sizeof(uint32_t))
 #define BIT_MASK_PER_UINT32 ((1 << CHARS_PER_UINT32) - 1)
 
+#define FM10K_SIMPLE_TX_FLAG ((uint32_t)ETH_TXQ_FLAGS_NOMULTSEGS | \
+				ETH_TXQ_FLAGS_NOOFFLOADS)
+
 static void fm10k_close_mbx_service(struct fm10k_hw *hw);
 static void fm10k_dev_promiscuous_enable(struct rte_eth_dev *dev);
 static void fm10k_dev_promiscuous_disable(struct rte_eth_dev *dev);
@@ -68,6 +71,7 @@ fm10k_MACVLAN_remove_all(struct rte_eth_dev *dev);
 static void fm10k_tx_queue_release(void *queue);
 static void fm10k_rx_queue_release(void *queue);
 static void fm10k_set_rx_function(struct rte_eth_dev *dev);
+static void fm10k_set_tx_function(struct rte_eth_dev *dev);
 
 static void
 fm10k_mbx_initlock(struct fm10k_hw *hw)
@@ -414,6 +418,10 @@ fm10k_dev_tx_init(struct rte_eth_dev *dev)
 				base_addr >> (CHAR_BIT * sizeof(uint32_t)));
 		FM10K_WRITE_REG(hw, FM10K_TDLEN(i), size);
 	}
+
+	/* set up vector or scalar TX function as appropriate */
+	fm10k_set_tx_function(dev);
+
 	return 0;
 }
 
@@ -980,8 +988,7 @@ fm10k_dev_infos_get(struct rte_eth_dev *dev,
 		},
 		.tx_free_thresh = FM10K_TX_FREE_THRESH_DEFAULT(0),
 		.tx_rs_thresh = FM10K_TX_RS_THRESH_DEFAULT(0),
-		.txq_flags = ETH_TXQ_FLAGS_NOMULTSEGS |
-				ETH_TXQ_FLAGS_NOOFFLOADS,
+		.txq_flags = FM10K_SIMPLE_TX_FLAG,
 	};
 
 }
@@ -1479,6 +1486,7 @@ fm10k_tx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_id,
 	q->nb_desc = nb_desc;
 	q->port_id = dev->data->port_id;
 	q->queue_id = queue_id;
+	q->txq_flags = conf->txq_flags;
 	q->ops = &def_txq_ops;
 	q->tail_ptr = (volatile uint32_t *)
 		&((uint32_t *)hw->hw_addr)[FM10K_TDT(queue_id)];
@@ -2090,6 +2098,32 @@ static const struct eth_dev_ops fm10k_eth_dev_ops = {
 };
 
 static void __attribute__((cold))
+fm10k_set_tx_function(struct rte_eth_dev *dev)
+{
+	struct fm10k_tx_queue *txq;
+	int i;
+	int use_sse = 1;
+
+	for (i = 0; i < dev->data->nb_tx_queues; i++) {
+		txq = dev->data->tx_queues[i];
+		if ((txq->txq_flags & FM10K_SIMPLE_TX_FLAG) != \
+			FM10K_SIMPLE_TX_FLAG) {
+			use_sse = 0;
+			break;
+		}
+	}
+
+	if (use_sse) {
+		for (i = 0; i < dev->data->nb_tx_queues; i++) {
+			txq = dev->data->tx_queues[i];
+			fm10k_txq_vec_setup(txq);
+		}
+		dev->tx_pkt_burst = fm10k_xmit_pkts_vec;
+	} else
+		dev->tx_pkt_burst = fm10k_xmit_pkts;
+}
+
+static void __attribute__((cold))
 fm10k_set_rx_function(struct rte_eth_dev *dev)
 {
 	struct fm10k_dev_info *dev_info = FM10K_DEV_PRIVATE_TO_INFO(dev);
-- 
1.7.7.6