This is a discussion on Re: IP header checksum missing with Realtek 8168, jumbo frames and - FreeBSD ; Arnaud Houdelette wrote: > Pyun YongHyeon a écrit : >> On Sun, Mar 02, 2008 at 11:44:03PM +0100, Arnaud Houdelette wrote: >> > I encountered connectivity issues with an integrated Realtek 8168 >> on my > MSI motherboard after enabling ...
Arnaud Houdelette wrote:
> Pyun YongHyeon a écrit :
>> On Sun, Mar 02, 2008 at 11:44:03PM +0100, Arnaud Houdelette wrote:
>> > I encountered connectivity issues with an integrated Realtek 8168
>> on my > MSI motherboard after enabling jumbo frames on my other box.
>> > Investigating the issue, I found that the packets with an ethernet
>> frame > of length > 2048 get an IP header of 0x0000.
>> > ping -s 3000 192.168.0.11 ==> fail (ethereal on the other box show
>> the > 0x0000 checksum on IP header)
>> > ping -s 2008 192.168.0.11 ==> fail
>> > ping -s 2006 192.168.0.11 ==> succeed
>> > > > re0:
>> 0xd800-0xd8ff mem > 0xfeaff000-0xfeafffff irq 19 at device 0.0 on pci2
>> > re0: Using 2 MSI messages
>> > miibus0:
>> > rgephy0:
PHY 1 on miibus0
>> > rgephy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX,
>> 1000baseT, > 1000baseT-FDX, auto
>> > > > The interface re0 is configured with :
>> > ifconfig inet 192.168.0.1/24 media auto mtu 7422 polling
>> > ifconfig re0 -txcsum solves the issue.
>> > > I tried to reproduce the issue with a Realtek 8169 (using re(4)
>> too). I > couln't : checksum offloading works ok on this card.
>> > Is this a known issue (or maybe a bug in the 8168) ?
>> There had been several re(4) instability issues on PCIe based
>> controllers. Would you try the following patch and let me know the
>> If you use 7.0-RELEASE use the following one.
> Sorry, I forgot to precise that I run the amd64 7.0-RELEASE .
> I got the patch and recompiled the kernel fine. I'll test this evening.
I'm sorry, but the patch just get things worse. The IP header thing
isn't solved. And I get corrupted or missing TCP fragments, on both 8168
and 8169 net interfaces (even with -txcsum).
>> > I can provide some network capture if needed. In the meantime I
>> swapped > the two cards as I don't need jumbo on one of them.
>> > > Thanks
>> > > Arnaud
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