ixgbe: never generate both software and hardware timestamps

skb_tx_timestamp() does not report software time stamp
if SKBTX_IN_PROGRESS is set. According to timestamping.txt
software time stamps are a fallback and should not be
generated if hardware time stamp is provided.

Move call to skb_tx_timestamp() after setting
SKBTX_IN_PROGRESS.

Signed-off-by: Jakub Kicinski <kubakici@wp.pl>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index 9e5a36612432..24538cb0f856 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -7042,8 +7042,6 @@ netdev_tx_t ixgbe_xmit_frame_ring(struct sk_buff *skb,
                 tx_flags |= IXGBE_TX_FLAGS_SW_VLAN;
         }
 
-        skb_tx_timestamp(skb);
-
         if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) {
                 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
                 tx_flags |= IXGBE_TX_FLAGS_TSTAMP;
@@ -7054,6 +7052,8 @@ netdev_tx_t ixgbe_xmit_frame_ring(struct sk_buff *skb,
                 schedule_work(&adapter->ptp_tx_work);
         }
 
+        skb_tx_timestamp(skb);
+
 #ifdef CONFIG_PCI_IOV
         /*
          * Use the l2switch_enable flag - would be false if the DMA