tree 812b2cab8bbeb0569909d8646ec864bef11c40c7
parent fadac6aae1b8d9344beaa18aa9035869d773fd98
author Ben Hutchings <bhutchings@solarflare.com> 1328217675 +0000
committer Ben Hutchings <bhutchings@solarflare.com> 1329176449 +0000

sfc: Replace some literal constants with EFX_PAGE_SIZE/EFX_BUF_SIZE

The 'page size' for PCIe DMA, i.e. the alignment of boundaries at
which DMA must be broken, is 4KB.  Name this value as EFX_PAGE_SIZE
and use it in efx_max_tx_len().  Redefine EFX_BUF_SIZE as
EFX_PAGE_SIZE since its value is also a result of that requirement,
and use it in efx_init_special_buffer().

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>