diff options
Diffstat (limited to 'share/docs')
| -rw-r--r-- | share/docs/hw/et131x.txt | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/share/docs/hw/et131x.txt b/share/docs/hw/et131x.txt index 26d2873..43d7c4f 100644 --- a/share/docs/hw/et131x.txt +++ b/share/docs/hw/et131x.txt @@ -153,6 +153,20 @@ PCI BAR 0. [bits 23]: Unused (undefined) [bits 30:24]: Non B2B IPG 1 [bits 31]: Reserved + @ hfdp: + [bits 9:0]: Collision window + [bits 11:10]: Reserved + [bits 15:12]: Re-transmit max + [bits 16]: Excess defer + [bits 17]: No backoff + [bits 18]: BP no backoff + [bits 19]: Alt BEB enable [1] + [bits 23-20]: Alt BEB trunc [1] + [bits 31-24]: Reserved + | + ++ [1]: BEB refers to Binary Exponential Backoff which is + a method to mitigate collisions by doubling the TX + backoff window (throttling TX rate) per collision. ------------------------------------- |