From: Jacob Keller <jacob.e.keller@intel.com>
Date: Fri, 5 Oct 2018 09:33:55 -0700
Subject: ixgbevf: add support for software timestamps
Patch-mainline: v5.0-rc1
Git-commit: 9fc145fcb5fbf2e10ad5e4b31a011b5cecb77b10
References: bsc#1113994 FATE#326315 FATE#326317

Add a call to skb_tx_timestamp in the ixgbevf_tx_map function. This
enables software timestamping for packets sent over this device driver.
The call is placed just prior to when we notify hardware of the new
packet, in order to software timestamp as close as possible to when the
hardware will transmit.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
@@ -4038,6 +4038,8 @@ static void ixgbevf_tx_map(struct ixgbev
 	/* set the timestamp */
 	first->time_stamp = jiffies;
 
+	skb_tx_timestamp(skb);
+
 	/* Force memory writes to complete before letting h/w know there
 	 * are new descriptors to fetch.  (Only applicable for weak-ordered
 	 * memory model archs, such as IA-64).