igb: Make first and tx_buffer_info->next_to_watch into pointers

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This change converts two tx_buffer_info index values into pointers.  The
advantage to this is that we reduce unnecessary computations and in the case
of next_to_watch we get an added bonus of the value being able to provide
additional information as a NULL value indicates it is unset versus a 0 not
having any meaning for the index value.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by:  Aaron Brown  <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

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Alexander Duyck 2011-08-26 07:44:43 +00:00 • committed by Jeff Kirsher

parent 7d13a7d0da

commit 8542db05db

2 changed files with 37 additions and 31 deletions

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2

drivers/net/ethernet/intel/igb/igb.h

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66

drivers/net/ethernet/intel/igb/igb_main.c

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