[DragonFlyBSD - Bug #2292] re interface with jumbo frames (mtu larger than 1500) hangs after some traffic

[Sepherosa Ziehau via Redmine]

Issue #2292 has been updated by Sepherosa Ziehau.


2012/1/30 Stefan Krüger via Redmine <bugtracker-admin at leaf.dragonflybsd.org>:
>
> Issue #2292 has been updated by Stefan Krüger.
>
>
> Sepherosa Ziehau wrote:
>> 2012/1/27 Stefan Krüger via Redmine <bugtracker-admin at leaf.dragonflybsd.org>:
>> >
>> > Issue #2292 has been reported by Stefan Krüger.
>> >
>> > ----------------------------------------
>> > Bug #2292: re interface with jumbo frames (mtu larger than 1500) hangs after some traffic
>> > http://bugs.dragonflybsd.org/issues/2292
>> >
>> > Author: Stefan Krüger
>> > Status: New
>> > Priority: Normal
>> > Assignee:
>> > Category:
>> > Target version:
>> >
>> >
>> > How to reproduce:
>> > ifconfig re0 mtu 4088
>> > cd /usr; make pkgsrc-create
>> > wait a bit
>> > re0 completely hangs; no ping; nothing when tcpdumping; nothing dmesg either
>> >
>> > doing a
>> > ifconfig re0 mtu 1500
>> > gets it back to life though...
>>
>> Can you try turning off txcsum when using jumbo frame on re0? Â i.e.
>> ifconfig re0 -txcsum
>>
>> Best Regards,
>> sephe
>>
>
> I did:
>
> ifconfig re0 -txcsum
> ifconfig re0 mtu 4088
> cd /usr; make pkgsrc-create
>
> still hangs at 26 % (i.e. after transfering about 124.11 MiB)

Please test following patch:
http://leaf.dragonflybsd.org/~sephe/if_re.diff

Best Regards,
sephe

-- 
Tomorrow Will Never Die
----------------------------------------
Bug #2292: re interface with jumbo frames (mtu larger than 1500) hangs after some traffic
http://bugs.dragonflybsd.org/issues/2292

Author: Stefan Krüger
Status: New
Priority: Normal
Assignee: 
Category: 
Target version: 


How to reproduce:
ifconfig re0 mtu 4088
cd /usr; make pkgsrc-create
wait a bit
re0 completely hangs; no ping; nothing when tcpdumping; nothing dmesg either

doing a
ifconfig re0 mtu 1500
gets it back to life though...

uname:
DragonFly v3.1.0.47.ge2743-DEVELOPMENT #0: Tue Jan 24 09:47:50 UTC 2012
    root at pkgbox64.dragonflybsd.org:/usr/obj/usr/src/sys/X86_64_GENERIC

dmesg:
re0: <RealTek 8111/8168 PCIe Gigabit Ethernet> port 0xe800-0xe8ff mem 0xfbffc000-0xfbffffff,0xfbffb000-0xfbffbfff irq 36 at device 0.0 on pci5
re0: Hardware rev. 0x2c000000; MAC ver. 0x2e; PCI-E 125MHz
miibus0: <MII bus> on re0
rgephy0: <8211B/RTL8169S/8110S media interface> on miibus0
rgephy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT, 1000baseT-FDX, auto


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