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ixgbe: add statistic indicating number of skipped Tx timestamps

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The ixgbe 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: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Jacob Keller
2017-05-03 10:29:00 -07:00
committed by Jeff Kirsher
parent 5fef124d9c
commit 4cc74c01ef
3 changed files with 16 additions and 9 deletions
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drivers/net/ethernet/intel/ixgbe/ixgbe.h
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@@ -733,6 +733,7 @@ struct ixgbe_adapter {
struct timecounter hw_tc;
u32 base_incval;
u32 tx_hwtstamp_timeouts;
u32 tx_hwtstamp_skipped;
u32 rx_hwtstamp_cleared;
void (*ptp_setup_sdp)(struct ixgbe_adapter *);