CVSROOT: /cvs
Module name: src
Changes by: rob...@cvs.openbsd.org 2011/02/15 12:49:47
Modified files:
sys/dev/pci : if_bge.c if_bgereg.h
Log message:
Add workaround for BCM5906 A0/1/2 controller silicon bug. When
auto-negotiation results in half-duplex operation, excess collision
on the ethernet link may cause internal chip delays that may result
in subsequent valid frames being dropped due to insufficient
receive buffer resources. The workaround is to choose de-pipeline
method as a flow control decision for SDI. De-pipeline method
allows only 1 data in TxMbuf at a time such that a request to RDMA
from SDI is made only when TxMbuf is empty.
>From FreeBSD; ok miod@; ok kettenis@
