linux/drivers/net/ethernet/intel
Miroslav Lichvar 094bf4d0e9 igb: shorten maximum PHC timecounter update interval
The timecounter needs to be updated at least once per ~550 seconds in
order to avoid a 40-bit SYSTIM timestamp to be misinterpreted as an old
timestamp.

Since commit 500462a9d ("timers: Switch to a non-cascading wheel"),
scheduling of delayed work seems to be less accurate and a requested
delay of 540 seconds may actually be longer than 550 seconds. Shorten
the delay to 480 seconds to be sure the timecounter is updated in time.

This fixes an issue with HW timestamps on 82580/I350/I354 being off by
~1100 seconds for few seconds every ~9 minutes.

Cc: Jacob Keller <jacob.e.keller@intel.com>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2018-10-31 10:24:41 -07:00
..
e1000 e1000: remove set but not used variable 'txb2b' 2018-09-19 23:09:23 -07:00
e1000e pci-v4.20-changes 2018-10-25 06:50:48 -07:00
fm10k pci-v4.20-changes 2018-10-25 06:50:48 -07:00
i40e Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-10-26 19:25:07 -07:00
iavf drivers: net: remove <net/busy_poll.h> inclusion when not needed 2018-10-25 16:20:02 -07:00
ice ice: Poll for link status change 2018-10-24 14:30:40 -07:00
igb igb: shorten maximum PHC timecounter update interval 2018-10-31 10:24:41 -07:00
igbvf intel-ethernet: use correct module license 2018-09-18 15:32:59 -07:00
igc igc: Add watchdog 2018-10-17 13:58:47 -07:00
ixgb Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/net 2018-09-25 10:35:29 -07:00
ixgbe Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-10-26 19:25:07 -07:00
ixgbevf ixgbevf: off by one in ixgbevf_ipsec_tx() 2018-10-03 12:29:34 -07:00
e100.c intel-ethernet: use correct module license 2018-09-18 15:32:59 -07:00
Kconfig Documentation: intel: Convert to RST format 2018-10-18 12:41:29 -07:00
Makefile igc: Add skeletal frame for Intel(R) 2.5G Ethernet Controller support 2018-10-17 12:14:54 -07:00