diff options
| author | Jacob Keller <jacob.e.keller@intel.com> | 2017-05-03 20:28:59 +0300 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2017-06-06 11:02:05 +0300 |
| commit | c3b8f85ec24674896aac9a6e41235b8d38db3dde (patch) | |
| tree | 65c17115c071d47dbb24da6f5cba7c99f50d10cc /drivers | |
| parent | cff57141456482b410a2312b88467ceb4c26d75d (diff) | |
| download | linux-c3b8f85ec24674896aac9a6e41235b8d38db3dde.tar.xz | |
igb: add statistic indicating number of skipped Tx timestamps
The igb driver can only handle one Tx timestamp request at a time.
This means it is possible for an application timestamp request to be
ignored.
There is no easy way for an administrator to determine if this occurred.
Add a new statistic which tracks this, tx_hwtstamp_skipped.
Signed-off-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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/intel/igb/igb.h | 1 | ||||
| -rw-r--r-- | drivers/net/ethernet/intel/igb/igb_ethtool.c | 1 | ||||
| -rw-r--r-- | drivers/net/ethernet/intel/igb/igb_main.c | 2 |
3 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/igb/igb.h b/drivers/net/ethernet/intel/igb/igb.h index bf9bf9056d0c..be35edcf6b08 100644 --- a/drivers/net/ethernet/intel/igb/igb.h +++ b/drivers/net/ethernet/intel/igb/igb.h @@ -563,6 +563,7 @@ struct igb_adapter { struct cyclecounter cc; struct timecounter tc; u32 tx_hwtstamp_timeouts; + u32 tx_hwtstamp_skipped; u32 rx_hwtstamp_cleared; bool pps_sys_wrap_on; diff --git a/drivers/net/ethernet/intel/igb/igb_ethtool.c b/drivers/net/ethernet/intel/igb/igb_ethtool.c index 0efb62db6efd..8730f7cbce68 100644 --- a/drivers/net/ethernet/intel/igb/igb_ethtool.c +++ b/drivers/net/ethernet/intel/igb/igb_ethtool.c @@ -90,6 +90,7 @@ static const struct igb_stats igb_gstrings_stats[] = { IGB_STAT("os2bmc_tx_by_host", stats.o2bspc), IGB_STAT("os2bmc_rx_by_host", stats.b2ogprc), IGB_STAT("tx_hwtstamp_timeouts", tx_hwtstamp_timeouts), + IGB_STAT("tx_hwtstamp_skipped", tx_hwtstamp_skipped), IGB_STAT("rx_hwtstamp_cleared", rx_hwtstamp_cleared), }; diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index fefa46120cbc..06b81a609fa0 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -5388,6 +5388,8 @@ netdev_tx_t igb_xmit_frame_ring(struct sk_buff *skb, adapter->ptp_tx_start = jiffies; if (adapter->hw.mac.type == e1000_82576) schedule_work(&adapter->ptp_tx_work); + } else { + adapter->tx_hwtstamp_skipped++; } } |