kern/122221: re(4) requires -txcsum and -rxcsum on 8-CURRENT

[Aryeh M. Friedman]

>Number:         122221
>Category:       kern
>Synopsis:       re(4) requires -txcsum and -rxcsum on 8-CURRENT
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat Mar 29 05:40:05 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator:     Aryeh M. Friedman
>Release:        FreeBSD 8.0-CURRENT amd64
>Organization:
FloSoft Systems
>Environment:
System: FreeBSD flosoft.no-ip.biz 8.0-CURRENT FreeBSD 8.0-CURRENT #0: Fri Mar 28 17:10:34 EDT 2008 root at flosoft.no-ip.biz:/usr/obj/usr/src/sys/MONSTER amd64


>Description:
	After working for a while (since august with patchs and since dec with base install) re(4) on 

re0: <RealTek 8168/8111B PCIe Gigabit Ethernet> port 0xe800-0xe8ff mem 0xfebff000-0xfebfffff irq 17 at device 0.0 on pci4
miibus0: <MII bus> on re0
rgephy0: <RTL8169S/8110S/8211B media interface> PHY 1 on miibus0
rgephy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT, 1000baseT-FDX, auto
re0: Ethernet address: 00:19:db:b5:f8:0f

	Requires -txcsum and -rxcsum to be set.  Failure to do so leads to very poor performence and/or completelyl failure to connect to certain machines and/or stall of download at 0 bytes.

>How-To-Repeat:

>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted: