ixgbe: add MAC control forward

Signed-off-by: Intel

diff --git a/lib/librte_pmd_ixgbe/ixgbe_ethdev.c b/lib/librte_pmd_ixgbe/ixgbe_ethdev.c
index b826008..240106b 100644 (file)
--- a/lib/librte_pmd_ixgbe/ixgbe_ethdev.c
+++ b/lib/librte_pmd_ixgbe/ixgbe_ethdev.c
@@ -2028,6 +2028,7 @@ ixgbe_flow_ctrl_set(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
        int err;
        uint32_t rx_buf_size;
        uint32_t max_high_water;
+       uint32_t mflcn;
        enum ixgbe_fc_mode rte_fcmode_2_ixgbe_fcmode[] = {
                ixgbe_fc_none,
                ixgbe_fc_rx_pause,
@@ -2060,8 +2061,24 @@ ixgbe_flow_ctrl_set(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
        hw->fc.send_xon       = fc_conf->send_xon;
 
        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 (fc_conf->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;
        }