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fm10k: Reduce buffer size when pages are larger than 4K 

This change reduces the buffer size to 2K for all page sizes.  The basic
idea is that since most frames only have a 1500 MTU supporting a buffer
size larger than this is somewhat wasteful.  As such I have reduced the
size to 2K for all page sizes which will allow for more uses per page.

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>
This commit is contained in:
Alexander Duyck 2014-09-26 06:33:49 +00:00 committed by Jeff Kirsher
parent d068b02cfd
commit fd33396206
1 changed files with 2 additions and 6 deletions
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8
drivers/net/ethernet/intel/fm10k/fm10k.h
View File

@ -47,13 +47,9 @@
#define FM10K_DEFAULT_TX_WORK 256
#define FM10K_RXBUFFER_256 256
#define FM10K_RXBUFFER_16384 16384
#define FM10K_RX_HDR_LEN FM10K_RXBUFFER_256
#if PAGE_SIZE <= FM10K_RXBUFFER_16384
#define FM10K_RX_BUFSZ (PAGE_SIZE / 2)
#else
#define FM10K_RX_BUFSZ FM10K_RXBUFFER_16384
#endif
#define FM10K_RXBUFFER_2048 2048
#define FM10K_RX_BUFSZ FM10K_RXBUFFER_2048
/* How many Rx Buffers do we bundle into one write to the hardware ? */
#define FM10K_RX_BUFFER_WRITE 16 /* Must be power of 2 */