nfp: eliminate an if statement in calculation of completed frames

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Given that our rings are always a power of 2, we can simplify the
calculation of number of completed TX descriptors by using masking
instead of if statement based on whether the index have wrapped
or not.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Jakub Kicinski 2017-05-15 17:55:23 -07:00 • committed by David S. Miller

parent 4aa3b7660a

commit 730b3ab54a

1 changed files with 2 additions and 8 deletions

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10

drivers/net/ethernet/netronome/nfp/nfp_net_common.c

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