From b66e2397cd277cf2bec2628b3ed35865df2609e5 Mon Sep 17 00:00:00 2001
From: Matthew Vick <matthew.vick@intel.com>
Date: Thu, 13 Dec 2012 07:20:33 +0000
Subject: [PATCH] igb: Add support for SW timestamping
Enable SW timestamping for situations where the user may prefer it over HW
timestamping or there may not be HW timestamping.
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Matthew Vick <matthew.vick@intel.com>
Acked-by: Jacob Keller <Jacob.e.keller@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
drivers/net/ethernet/intel/igb/igb_ethtool.c | 9 +++++++++
drivers/net/ethernet/intel/igb/igb_main.c | 2 ++
2 files changed, 11 insertions(+)
diff --git a/drivers/net/ethernet/intel/igb/igb_ethtool.c b/drivers/net/ethernet/intel/igb/igb_ethtool.c
index bfe9208c4b18..61803032fdd3 100644
--- a/drivers/net/ethernet/intel/igb/igb_ethtool.c
+++ b/drivers/net/ethernet/intel/igb/igb_ethtool.c
@@ -2272,12 +2272,21 @@ static int igb_get_ts_info(struct net_device *dev,
struct igb_adapter *adapter = netdev_priv(dev);
switch (adapter->hw.mac.type) {
+ case e1000_82575:
+ info->so_timestamping =
+ SOF_TIMESTAMPING_TX_SOFTWARE |
+ SOF_TIMESTAMPING_RX_SOFTWARE |
+ SOF_TIMESTAMPING_SOFTWARE;
+ return 0;
case e1000_82576:
case e1000_82580:
case e1000_i350:
case e1000_i210:
case e1000_i211:
info->so_timestamping =
+ SOF_TIMESTAMPING_TX_SOFTWARE |
+ SOF_TIMESTAMPING_RX_SOFTWARE |
+ SOF_TIMESTAMPING_SOFTWARE |
SOF_TIMESTAMPING_TX_HARDWARE |
SOF_TIMESTAMPING_RX_HARDWARE |
SOF_TIMESTAMPING_RAW_HARDWARE;
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index a9cb84a76e49..9dd3da540cd0 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -4610,6 +4610,8 @@ netdev_tx_t igb_xmit_frame_ring(struct sk_buff *skb,
first->bytecount = skb->len;
first->gso_segs = 1;
+ skb_tx_timestamp(skb);
+
if (unlikely((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) &&
!(adapter->ptp_tx_skb))) {
skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
--
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