ice: allow empty Rx descriptors

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In some circumstances, the hardware will hand us a receive descriptor
which has no data attached, but is otherwise valid. The receive code was
improperly ignoring these descriptors, which result in an infinite loop.

To fix this, change the receive code to process all descriptors,
regardless of the size of the associated data. Add checks to the
memory-handling functions to allow for zero size.

Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

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Mitch Williams 2019-07-25 01:55:34 -07:00 • committed by Jeff Kirsher

parent 7829570e28

commit ac6f733a7b

1 changed files with 12 additions and 3 deletions

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drivers/net/ethernet/intel/ice/ice_txrx.c

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