diff options
| author | Jesse Brandeburg <jesse.brandeburg@intel.com> | 2006-09-27 15:54:17 -0400 |
|---|---|---|
| committer | Auke Kok <juke-jan.h.kok@intel.com> | 2006-09-27 15:54:17 -0400 |
| commit | a4d3c54024beff40d4e5e4647ad212696e0ea354 (patch) | |
| tree | f4affd0d4b44f211718009818709b15238fca812 | |
| parent | 793fab727324adc90a0a2889f2b1d88bae4790eb (diff) | |
ixgb: combine more rx descriptors to improve performance
We experimented with more descriptor buffer writebacks and found that
values larger than 8 give HW problems, but 8 is safe and gives us some
improved performance.
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
| -rw-r--r-- | drivers/net/ixgb/ixgb.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ixgb/ixgb.h b/drivers/net/ixgb/ixgb.h index a1a7f3b4a62f..50ffe90488ff 100644 --- a/drivers/net/ixgb/ixgb.h +++ b/drivers/net/ixgb/ixgb.h | |||
| @@ -111,7 +111,7 @@ struct ixgb_adapter; | |||
| 111 | #define IXGB_RXBUFFER_16384 16384 | 111 | #define IXGB_RXBUFFER_16384 16384 |
| 112 | 112 | ||
| 113 | /* How many Rx Buffers do we bundle into one write to the hardware ? */ | 113 | /* How many Rx Buffers do we bundle into one write to the hardware ? */ |
| 114 | #define IXGB_RX_BUFFER_WRITE 4 /* Must be power of 2 */ | 114 | #define IXGB_RX_BUFFER_WRITE 8 /* Must be power of 2 */ |
| 115 | 115 | ||
| 116 | /* only works for sizes that are powers of 2 */ | 116 | /* only works for sizes that are powers of 2 */ |
| 117 | #define IXGB_ROUNDUP(i, size) ((i) = (((i) + (size) - 1) & ~((size) - 1))) | 117 | #define IXGB_ROUNDUP(i, size) ((i) = (((i) + (size) - 1) & ~((size) - 1))) |