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)
rctl &= ~E1000_RCTL_PMCF;
E1000_WRITE_REG(hw, E1000_RCTL, rctl);
+
+ /*
+ * check if we want to change flow control mode - driver doesn't have native
+ * capability to do that, so we'll write the registers ourselves
+ */
+ ctrl = E1000_READ_REG(hw, E1000_CTRL);
+
+ /*
+ * set or clear E1000_CTRL_RFCE and E1000_CTRL_TFCE bits depending
+ * on configuration
+ */
+ switch (fc_conf->mode) {
+ case RTE_FC_NONE:
+ ctrl &= ~E1000_CTRL_RFCE & ~E1000_CTRL_TFCE;
+ break;
+ case RTE_FC_RX_PAUSE:
+ ctrl |= E1000_CTRL_RFCE;
+ ctrl &= ~E1000_CTRL_TFCE;
+ break;
+ case RTE_FC_TX_PAUSE:
+ ctrl |= E1000_CTRL_TFCE;
+ ctrl &= ~E1000_CTRL_RFCE;
+ break;
+ case RTE_FC_FULL:
+ ctrl |= E1000_CTRL_RFCE | E1000_CTRL_TFCE;
+ break;
+ default:
+ PMD_INIT_LOG(ERR, "invalid flow control mode");
+ return -EINVAL;
+ }
+
+ E1000_WRITE_REG(hw, E1000_CTRL, ctrl);
+
E1000_WRITE_FLUSH(hw);
return 0;
frame_size > dev_info.max_rx_pktlen)
return -EINVAL;
- /* refuse mtu that requires the support of scattered packets when this
- * feature has not been enabled before. */
- if (!dev->data->scattered_rx &&
- frame_size > dev->data->min_rx_buf_size - RTE_PKTMBUF_HEADROOM)
+ /*
+ * If device is started, refuse mtu that requires the support of
+ * scattered packets when this feature has not been enabled before.
+ */
+ if (dev->data->dev_started && !dev->data->scattered_rx &&
+ frame_size > dev->data->min_rx_buf_size - RTE_PKTMBUF_HEADROOM) {
+ PMD_INIT_LOG(ERR, "Stop port first.");
return -EINVAL;
+ }
rctl = E1000_READ_REG(hw, E1000_RCTL);