diff options
| author | Auke Kok <auke-jan.h.kok@intel.com> | 2006-04-14 19:05:18 -0700 |
|---|---|---|
| committer | Auke Kok <auke-jan.h.kok@intel.com> | 2006-04-14 19:05:18 -0700 |
| commit | 9e2feace1acd38d7a3b1275f7f9f8a397d09040e (patch) | |
| tree | 109e9bae993df91e2ff83ce7b4fccba9498d0273 /drivers/net/e1000/e1000.h | |
| parent | 6fc7a7eca70780dc1539ce68a6513f9b11891f3c (diff) | |
e1000: Buffer optimizations for small MTU
Remove multi-descriptor support from legacy recieve path
Add memory usage efficiency by using more correct size descriptors for
small MTU sizes and optimize using LPE for <= 1522 byte frame sizes
An extra performance fix that effected our TCP window size growth
as a receiver. Set our initial buffer to be 128 bytes instead of 256
to prevent over-socket charge when truesize is computed in the stack.
old way: truesize = 256 + l1 = 256 + 1460 = 1716
new way: truesize = 128 + l1 = 128 + 1460 = 1588
The magic value that we can't cross is 1648.
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
Diffstat (limited to 'drivers/net/e1000/e1000.h')
| -rw-r--r-- | drivers/net/e1000/e1000.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/e1000/e1000.h b/drivers/net/e1000/e1000.h index 764808f3702..2dfabdb29e7 100644 --- a/drivers/net/e1000/e1000.h +++ b/drivers/net/e1000/e1000.h @@ -114,6 +114,8 @@ struct e1000_adapter; /* Supported Rx Buffer Sizes */ #define E1000_RXBUFFER_128 128 /* Used for packet split */ #define E1000_RXBUFFER_256 256 /* Used for packet split */ +#define E1000_RXBUFFER_512 512 +#define E1000_RXBUFFER_1024 1024 #define E1000_RXBUFFER_2048 2048 #define E1000_RXBUFFER_4096 4096 #define E1000_RXBUFFER_8192 8192 |