+static int
+ixgbe_flow_ctrl_enable(struct rte_eth_dev *dev, struct ixgbe_hw *hw)
+{
+ struct ixgbe_adapter *adapter = dev->data->dev_private;
+ int err;
+ uint32_t mflcn;
+
+ ixgbe_setup_fc(hw);
+
+ err = ixgbe_fc_enable(hw);
+
+ /* Not negotiated is not an error case */
+ if (err == IXGBE_SUCCESS || err == IXGBE_ERR_FC_NOT_NEGOTIATED) {
+ /*
+ *check if we want to forward MAC frames - driver doesn't
+ *have native capability to do that,
+ *so we'll write the registers ourselves
+ */
+
+ mflcn = IXGBE_READ_REG(hw, IXGBE_MFLCN);
+
+ /* set or clear MFLCN.PMCF bit depending on configuration */
+ if (adapter->mac_ctrl_frame_fwd != 0)
+ mflcn |= IXGBE_MFLCN_PMCF;
+ else
+ mflcn &= ~IXGBE_MFLCN_PMCF;
+
+ IXGBE_WRITE_REG(hw, IXGBE_MFLCN, mflcn);
+ IXGBE_WRITE_FLUSH(hw);
+
+ return 0;
+ }
+ return err;
+}
+