fm10k: use software values when checking for Tx hangs in hot path

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A previous patch added support to check for hardware Tx pending in the
fm10k_down routine. This support was intended to ensure that we
accurately check what the hardware state is. However, checking for Tx
hangs in this manor during the hotpath results in a large performance
hit. Avoid this by making the hotpath check use the SW counters instead.

Fixes: a0f53cf49cb0 ("fm10k: use actual hardware registers when checking for pending Tx", 2016-06-08)
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

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Jacob Keller 2016-06-09 14:56:05 -07:00 • committed by Jeff Kirsher

parent e59a393d08

commit 5b9e4432db

3 changed files with 17 additions and 6 deletions

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2

drivers/net/ethernet/intel/fm10k/fm10k.h

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19

drivers/net/ethernet/intel/fm10k/fm10k_main.c

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2

drivers/net/ethernet/intel/fm10k/fm10k_pci.c

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