| commit | 9e2feace1acd38d7a3b1275f7f9f8a397d09040e | |
| author | Auke Kok <auke-jan.h.kok@intel.com> | |
| Sat, 15 Apr 2006 02:05:18 +0000 (14 19:05 -0700) | ||
| committer | Auke Kok <auke-jan.h.kok@intel.com> | |
| Sat, 15 Apr 2006 02:05:18 +0000 (14 19:05 -0700) | ||
| tree | 109e9bae993df91e2ff83ce7b4fccba9498d0273 | treesnapshot (tar.gz zip) |
| parent | 6fc7a7eca70780dc1539ce68a6513f9b11891f3c | commitdiff |
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>
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>
| drivers/net/e1000/e1000.h | diffblobblamehistory | |
| drivers/net/e1000/e1000_main.c | diffblobblamehistory |