e1000e: Tx hang on I218 when linked at 100Half and slow response at 10Mbps

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Tx hang is an unintended consequence of another workaround that is in the
EEPROM for an issue with the firmware at 10Mbps when K1 (a power mode of
the MAC-PHY interconnect) is enabled.  The issue is resolved by setting
appropriate Tx re-transmission timeouts in the PHY and associated K1 entry
times in the MAC to allow enough transmissions to occur without triggering
a Tx hang.  A similar change is needed when linked at 10Mbps to improve
latency.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

...

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Bruce Allan 2013-06-21 09:07:13 +00:00 • committed by Jeff Kirsher

parent ce345e082e

commit e0236ad9cd

2 changed files with 48 additions and 7 deletions

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49

drivers/net/ethernet/intel/e1000e/ich8lan.c

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6

drivers/net/ethernet/intel/e1000e/ich8lan.h

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