[dpdk-dev] [PATCH 2/5] ethdev: add autoneg parameter in flow ctrl accessors

[David Marchand <david.marchand@6wind.com>]

Add autoneg field in flow control parameters.
This makes it easier to understand why changing some parameters does not always
have the expected result.

Changing autoneg is not supported at the moment.

Signed-off-by: David Marchand <david.marchand@6wind.com>
---
 lib/librte_ether/rte_ethdev.h       |    1 +
 lib/librte_pmd_e1000/em_ethdev.c    |    3 +++
 lib/librte_pmd_e1000/igb_ethdev.c   |    3 +++
 lib/librte_pmd_ixgbe/ixgbe_ethdev.c |    3 +++
 4 files changed, 10 insertions(+)

diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
index 04533e5..39351ea 100644
--- a/lib/librte_ether/rte_ethdev.h
+++ b/lib/librte_ether/rte_ethdev.h
@@ -550,6 +550,7 @@ struct rte_eth_fc_conf {
 	uint16_t send_xon;    /**< Is XON frame need be sent */
 	enum rte_eth_fc_mode mode;  /**< Link flow control mode */
 	uint8_t mac_ctrl_frame_fwd; /**< Forward MAC control frames */
+	uint8_t autoneg;      /**< Use Pause autoneg */
 };
 
 /**
diff --git a/lib/librte_pmd_e1000/em_ethdev.c b/lib/librte_pmd_e1000/em_ethdev.c
index 74dc7e5..c148cbc 100644
--- a/lib/librte_pmd_e1000/em_ethdev.c
+++ b/lib/librte_pmd_e1000/em_ethdev.c
@@ -1378,6 +1378,7 @@ eth_em_flow_ctrl_get(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 	fc_conf->high_water = hw->fc.high_water;
 	fc_conf->low_water = hw->fc.low_water;
 	fc_conf->send_xon = hw->fc.send_xon;
+	fc_conf->autoneg = hw->mac.autoneg;
 
 	/*
 	 * Return rx_pause and tx_pause status according to actual setting of
@@ -1422,6 +1423,8 @@ eth_em_flow_ctrl_set(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 	uint32_t rctl;
 
 	hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+	if (fc_conf->autoneg != hw->mac.autoneg)
+		return -ENOTSUP;
 	rx_buf_size = em_get_rx_buffer_size(hw);
 	PMD_INIT_LOG(DEBUG, "Rx packet buffer size = 0x%x \n", rx_buf_size);
 
diff --git a/lib/librte_pmd_e1000/igb_ethdev.c b/lib/librte_pmd_e1000/igb_ethdev.c
index 6dc82c2..e15fe5a 100644
--- a/lib/librte_pmd_e1000/igb_ethdev.c
+++ b/lib/librte_pmd_e1000/igb_ethdev.c
@@ -1818,6 +1818,7 @@ eth_igb_flow_ctrl_get(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 	fc_conf->high_water = hw->fc.high_water;
 	fc_conf->low_water = hw->fc.low_water;
 	fc_conf->send_xon = hw->fc.send_xon;
+	fc_conf->autoneg = hw->mac.autoneg;
 
 	/*
 	 * Return rx_pause and tx_pause status according to actual setting of
@@ -1862,6 +1863,8 @@ eth_igb_flow_ctrl_set(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 	uint32_t rctl;
 
 	hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+	if (fc_conf->autoneg != hw->mac.autoneg)
+		return -ENOTSUP;
 	rx_buf_size = igb_get_rx_buffer_size(hw);
 	PMD_INIT_LOG(DEBUG, "Rx packet buffer size = 0x%x \n", rx_buf_size);
 
diff --git a/lib/librte_pmd_ixgbe/ixgbe_ethdev.c b/lib/librte_pmd_ixgbe/ixgbe_ethdev.c
index 4633654..c876c3e 100644
--- a/lib/librte_pmd_ixgbe/ixgbe_ethdev.c
+++ b/lib/librte_pmd_ixgbe/ixgbe_ethdev.c
@@ -2193,6 +2193,7 @@ ixgbe_flow_ctrl_get(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 	fc_conf->high_water = hw->fc.high_water[0];
 	fc_conf->low_water = hw->fc.low_water[0];
 	fc_conf->send_xon = hw->fc.send_xon;
+	fc_conf->autoneg = !hw->fc.disable_fc_autoneg;
 
 	/*
 	 * Return rx_pause status according to actual setting of
@@ -2244,6 +2245,8 @@ ixgbe_flow_ctrl_set(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 	PMD_INIT_FUNC_TRACE();
 
 	hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+	if (fc_conf->autoneg != !hw->fc.disable_fc_autoneg)
+		return -ENOTSUP;
 	rx_buf_size = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(0));
 	PMD_INIT_LOG(DEBUG, "Rx packet buffer size = 0x%x \n", rx_buf_size);
 
-- 
1.7.10.4