From: Guinan Sun <guinanx.sun@intel.com>
Date: Tue, 3 Dec 2019 16:59:28 +0000 (+0000)
Subject: net/ixgbe: set fixed flag for exact link speed
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=34e7360960687c1e99fd693d7a72e3be3a019a36;p=dpdk.git

net/ixgbe: set fixed flag for exact link speed

Setting exact link speed makes sense if auto-negotiation is
disabled. Fixed flag is required to disable auto-negotiation.

Signed-off-by: Guinan Sun <guinanx.sun@intel.com>
Acked-by: Ting Xu <ting.xu@intel.com>
Acked-by: Xiaolong Ye <xiaolong.ye@intel.com>
---

diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index fba8c51595..b2f723f0b6 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -2559,17 +2559,6 @@ ixgbe_dev_start(struct rte_eth_dev *dev)
 
 	PMD_INIT_FUNC_TRACE();
 
-	/* IXGBE devices don't support:
-	*    - half duplex (checked afterwards for valid speeds)
-	*    - fixed speed: TODO implement
-	*/
-	if (dev->data->dev_conf.link_speeds & ETH_LINK_SPEED_FIXED) {
-		PMD_INIT_LOG(ERR,
-		"Invalid link_speeds for port %u, fix speed not supported",
-				dev->data->port_id);
-		return -EINVAL;
-	}
-
 	/* Stop the link setup handler before resetting the HW. */
 	rte_eal_alarm_cancel(ixgbe_dev_setup_link_alarm_handler, dev);
 
@@ -2725,7 +2714,11 @@ ixgbe_dev_start(struct rte_eth_dev *dev)
 	}
 
 	link_speeds = &dev->data->dev_conf.link_speeds;
-	if (*link_speeds & ~allowed_speeds) {
+
+	/* Ignore autoneg flag bit and check the validity of 
+	 * link_speed 
+	 */
+	if (((*link_speeds) >> 1) & ~(allowed_speeds >> 1)) {
 		PMD_INIT_LOG(ERR, "Invalid link setting");
 		goto error;
 	}
@@ -4169,7 +4162,8 @@ ixgbe_dev_link_update_share(struct rte_eth_dev *dev,
 	link.link_status = ETH_LINK_DOWN;
 	link.link_speed = ETH_SPEED_NUM_NONE;
 	link.link_duplex = ETH_LINK_HALF_DUPLEX;
-	link.link_autoneg = ETH_LINK_AUTONEG;
+	link.link_autoneg = !(dev->data->dev_conf.link_speeds &
+			ETH_LINK_SPEED_FIXED);
 
 	hw->mac.get_link_status = true;