From: Intel <intel.com>
Date: Fri, 8 Nov 2013 02:00:00 +0000 (+0100)
Subject: ixgbe: add MAC control forward
X-Git-Tag: spdx-start~11077
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=940b3cc0c0d25c315fed9f88fa6f8f4bdcbd6e93;p=dpdk.git

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 b826008c55..240106bc69 100644
--- 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;
 	}