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igb: fix race conditions on queuing skb for HW time stamp

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igb has a single set of TX time stamping resources per NIC.
Use a simple bit lock to avoid race conditions and leaking skbs
when multiple TX rings try to claim time stamping.

Signed-off-by: Jakub Kicinski <kubakici@wp.pl>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Jakub Kicinski
2014-03-15 14:55:32 +00:00
committed by Jeff Kirsher
parent afc835d1bd
commit ed4420a3b4
3 changed files with 7 additions and 2 deletions
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3
drivers/net/ethernet/intel/igb/igb.h
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@@ -492,7 +492,8 @@ struct igb_adapter {
enum e1000_state_t {
__IGB_TESTING,
__IGB_RESETTING,
__IGB_DOWN
__IGB_DOWN,
__IGB_PTP_TX_IN_PROGRESS,
};
enum igb_boards {