i40e/i40evf: carefully fill tx ring

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We need to make sure that we stay away from the cache line
where the DD bit (done) may be getting written back for
the transmit ring since the hardware may be writing the
whole cache line for a partial update.

Change-ID: Id0b6dfc01f654def6a2a021af185803be1915d7e
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

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Jesse Brandeburg 2014-02-06 05:51:13 +00:00 • committed by Jeff Kirsher

parent ff80301efa

commit be56052154

2 changed files with 4 additions and 4 deletions

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4

drivers/net/ethernet/intel/i40e/i40e_txrx.c

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4

drivers/net/ethernet/intel/i40evf/i40e_txrx.c

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