[dpdk-stable] [PATCH v1] net/e1000: fix the invalid flow control mode setting

[Wenjun Wu]

E1000_CTRL register should be updated according to fc_conf->mode's value.

Fixes: af75078fece3 ("first public release")
Cc: stable at dpdk.org

Signed-off-by: Wenjun Wu <wenjun1.wu at intel.com>
---
 drivers/net/e1000/igb_ethdev.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/net/e1000/igb_ethdev.c b/drivers/net/e1000/igb_ethdev.c
index 647aa8d99..390737393 100644
--- a/drivers/net/e1000/igb_ethdev.c
+++ b/drivers/net/e1000/igb_ethdev.c
@@ -3064,6 +3064,7 @@ eth_igb_flow_ctrl_set(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 	uint32_t rx_buf_size;
 	uint32_t max_high_water;
 	uint32_t rctl;
+	uint32_t ctrl;
 
 	hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 	if (fc_conf->autoneg != hw->mac.autoneg)
@@ -3101,6 +3102,15 @@ eth_igb_flow_ctrl_set(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 			rctl &= ~E1000_RCTL_PMCF;
 
 		E1000_WRITE_REG(hw, E1000_RCTL, rctl);
+
+		ctrl = E1000_READ_REG(hw, E1000_CTRL);
+		ctrl &= ~(E1000_CTRL_RFCE|E1000_CTRL_TFCE);
+		if (fc_conf->mode == RTE_FC_RX_PAUSE || fc_conf->mode == RTE_FC_FULL)
+			ctrl |= E1000_CTRL_RFCE;
+		if (fc_conf->mode == RTE_FC_TX_PAUSE || fc_conf->mode == RTE_FC_FULL)
+			ctrl |= E1000_CTRL_TFCE;
+		E1000_WRITE_REG(hw, E1000_CTRL, ctrl);
+
 		E1000_WRITE_FLUSH(hw);
 
 		return 0;
-- 
2.25.1