Patch-ID# 101300-01
Keywords: FSB/E bad board causing data corruption
Synopsis: SunOS 4.1.3: point patch for bad FSB/E board corrupting TCP data
Date: Oct/07/93
 
Solaris Release: 1.1

SunOS Release: 4.1.3 
 
Unbundled Product:
 
Unbundled Release:
 
Topic: point patch for bad FSB/E board corrupting TCP data

  NOTE: As a point patch, this fix is not currently scheduled nor
        will necessarily be approved for integration in a future
        SunOS release.

        This patch for the "le" driver is designed specially for those
	customers who might suspect they have bad FSB/E boards as there
	might be a slight overhead in performance in the extra copy of data.

BugId's fixed with this patch: 1135454

Changes incorporated in this version: 

Relevant Architectures: sparc
    NOTE: sun4c sun4m

Patches which may conflict with this patch: 100768-02

Obsoleted by: 

Files included with this patch: if_le.o 

Problem Description: 

It has been seen that a bad FSB/E board can result in data being corrupted
which passes TCP checksum due to the driver optimization in not copying
data out of the board as it arrives.

INSTALL:

1)	mv /sys/sun{4c,4m}/OBJ/if_le.o /sys/sun{4c,4m}/OBJ/if_le.o.fcs
	cp sun{4c,4m}/4.1.{1,2,3}/if_le.o /sys/sun{4c,4m}/OBJ


     Please Refer to the System and Networking Administration Manual
             section on building and installing a custom kernel.