kern/51309: rl driver problem on large file transfers

[Rob Lensen]

>Number:         51309
>Category:       kern
>Synopsis:       rl driver problem on large file transfers
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Apr 23 06:20:04 PDT 2003
>Closed-Date:
>Last-Modified:
>Originator:     Rob Lensen
>Release:        FreeBSD 5.0-CURRENT i386
>Organization:
>Environment:
System: FreeBSD fileserver.cc17640-a.ensch1.ov.home.nl 5.0-CURRENT
FreeBSD 5.0-CURRENT#0: Sat Apr 19 05:32:43 CEST 2003
root@:/raid2/obj/raid2/src/sys/FILESERVER i386

FreeBSD-CURRENT cvs checkout from 18 apr

>Description:
        When large files are coppied over NFS the realtek driver stops
working.        This occurs after 1 minute or so, then I retry and then
it goes again for a minute or so.
        I get errors in dmesg like this:
        ----
        rl0: discard oversize frame (ether type 4471 flags 3 len 30037 >
max 1514)        rl0: discard oversize frame (ether type 1cd2 flags 3
len 30381 > max 1514)        ----
        The problem occurs on different hardware and on different
realtek cards.        Tested hardware:

Asus TX97XE with pentium 120 and 128mb ram, ide disk on the onboard
controller and        scsi disk on a adaptec 2940U2W
        And on ASUS P2B-DS with pentium 550 and 256mb ram, ide disk and
scsi disk connected        with a mylex acceleraid 150.
        I tested different type's of rl card's and with all these errors
occur.

        I found some problem reports of a xe0 card, with the same
problem report, but I        thought that the rl driver has no
connection with the xe driver.

I found also another mail on the lucky list, with exact the same problem
http://groups.google.nl/groups?hl=nl&lr=&ie=UTF-8&oe=UTF-8&threadm=20030118001302.E726518F%40pinyon.org.lucky.freebsd.c
urrent&rnum=1&prev=/groups%3Fq%3Drl%2Bdiscard%2Boversize%2Bframe%2Bfree
bsd%26hl%3Dnl%26lr%3D%26ie%3DUTF-8%26oe%3DUTF-8%
26selm%3D20030118001302.E726518F%2540pinyon.org.lucky.freebsd.current%2
6rnum%3D1


>How-To-Repeat:
        Large file transfers via NFS 


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