[Bug 668194] New: dhcp client not working properly in Xen domU due to partial checksum offload

bugzilla_noreply＠novell.com

30 Jan 2011 30 Jan '11

15:53

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c0 Summary: dhcp client not working properly in Xen domU due to partial checksum offload Classification: openSUSE Product: openSUSE 11.3 Version: Final Platform: All OS/Version: openSUSE 11.3 Status: NEW Severity: Normal Priority: P5 - None Component: Network AssignedTo: bnc-team-screening@forge.provo.novell.com ReportedBy: samuel.kvasnica@ims.co.at QAContact: qa@suse.de Found By: --- Blocker: --- User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.13) Gecko/20101203 SUSE/3.6.13-0.2.1 Firefox/3.6.13 Well, hard to say if this ought be fixed on xen or on dhdp side, I'm rather assigning it to the network component. If dhcp client is deployed from within domU (no matter if dhcpdp or dhclient), we start seeing this storm on dhcp server from the first lease renewal on: Jan 22 16:54:40 master dhcpd: DHCPREQUEST for 192.168.101.83 from 02:ee:ee:ee:11:01 (testsrv) via br0 Jan 22 16:54:40 master dhcpd: DHCPACK on 192.168.101.83 to 02:ee:ee:ee:11:01 (testsrv) via br0 Jan 22 16:54:43 master dhcpd: DHCPREQUEST for 192.168.101.83 from 02:ee:ee:ee:11:01 (testsrv) via br0 Jan 22 16:54:43 master dhcpd: DHCPACK on 192.168.101.83 to 02:ee:ee:ee:11:01 (testsrv) via br0 Jan 22 16:54:46 master dhcpd: DHCPREQUEST for 192.168.101.83 from 02:ee:ee:ee:11:01 (testsrv) via br0 Jan 22 16:54:46 master dhcpd: DHCPACK on 192.168.101.83 to 02:ee:ee:ee:11:01 (testsrv) via br0 and these on the client side: Jan 22 16:54:44 logsrv dhcpcd[1836]: eth0: bad UDP checksum, ignoring Jan 22 16:54:47 logsrv dhcpcd[1836]: eth0: bad UDP checksum, ignoring Jan 22 16:54:50 logsrv dhcpcd[1836]: eth0: bad UDP checksum, ignoring Googling a bit around, this seems to be a known issue for quite a long time (2006?). Seems like the dhcp does not play well with partial checksum offload done on dom0 side of the vif interface. For me as a workaround now, setting 'ethtool -K $vif tx off' in dom0 helps, the question is still, how should the final solution look like ? Maybe properly patched dhcpd or dhcpcd ? There used to be a partial checksum patch on redhat, see: http://www.redhat.com/archives/fedora-cvs-commits/2007-April/msg00452.html http://rpmfind.net/linux/RPM/fedora/12/i386/dhcp-4.1.0p1-12.fc12.i686.html Why was this not included on suse ? Reproducible: Always Steps to Reproduce: 1. try to use dhcp client in pvm xen domU domain 2. wait until first lease renewal 3. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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31 Jan 31 Jan

05:46

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c wei wang changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |wewang@novell.com AssignedTo|bnc-team-screening@forge.pr |mt@novell.com |ovo.novell.com | -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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15 Feb 15 Feb

09:17

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c1 Marius Tomaschewski changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |NEEDINFO CC| |jfehlig@novell.com, | |mvidner@novell.com InfoProvider| |mmarek@novell.com --- Comment #1 from Marius Tomaschewski 2011-02-15 09:17:37 UTC --- AFAIK, it also works fine, when you add ETHTOOL_OPTIONS='-K iface tx off' to the interface config (that is to /etc/sysconfig/network/ifcfg-br0 assuming the interface name of the bridge is 'br0' or ifcfg-$vif in case of e.g. routed setup) or as you did to the xen scripts. AFAIS, the patch for the dhcp client requires a kernel patch as well and both have been not applied / accepted for upstream (patchsets). Michal, Jim, Martin, what do you think/say about? -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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09:26

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c2 --- Comment #2 from Marius Tomaschewski 2011-02-15 09:26:19 UTC --- Maybe this is not useful, but I'd tend to use a different way in first instance: why to not just turn off udp offload directly in the xen network driver in dom0 instead to hack "everything else"? -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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09:31

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c3 Michal Marek changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEEDINFO |NEW InfoProvider|mmarek@novell.com | --- Comment #3 from Michal Marek 2011-02-15 09:31:03 UTC --- If you mean this patch: http://git.kernel.org/linus/8dc4194, then it has been in mainline since 2.6.22. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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11:46

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c4 --- Comment #4 from Martin Vidner 2011-02-15 12:46:34 CET --- If we need the ethtool workaround then I hope sysconfig/xen-tools is able to detect the situation and apply it automatically, without needing to clutter ifcfgs. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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19:51

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c5 --- Comment #5 from Samuel Kvasnica 2011-02-15 19:51:21 UTC --- (In reply to comment #1)

...

AFAIK, it also works fine, when you add ETHTOOL_OPTIONS='-K iface tx off' to the interface config (that is to /etc/sysconfig/network/ifcfg-br0 assuming the interface name of the bridge is 'br0' or ifcfg-$vif in case of e.g. routed setup) or as you did to the xen scripts.

Well, fiddling around with offload is a temporary quick workaround but not really a valid solution. It is a performance issue to switch in general offload off on br0. Also for vif. Partial checksumming was not introduced just for fun. So if all other distros include the dhcp patch, what is the reason suse does not want it ? -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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20:41

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c6 --- Comment #6 from Marius Tomaschewski 2011-02-15 20:41:22 UTC --- (In reply to comment #5)

...

It is a performance issue to switch in general offload off on br0. Also for vif. Partial checksumming was not introduced just for fun.

It is a brief performance optimization creating interoperability problems and rejected by ISC, see: https://lists.isc.org/pipermail/dhcp-hackers/2010-April/001825.html https://lists.isc.org/pipermail/dhcp-hackers/2010-April/001832.html -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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21:01

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c7 --- Comment #7 from Samuel Kvasnica 2011-02-15 21:01:05 UTC --- (In reply to comment #6)

...

It is a brief performance optimization creating interoperability problems and rejected by ISC, see:

https://lists.isc.org/pipermail/dhcp-hackers/2010-April/001825.html https://lists.isc.org/pipermail/dhcp-hackers/2010-April/001832.html

Yeah, I've read already that whole thread... and came to the conclusion the dhcpd is buggy. I'm not really happy to e.g. decrease the performance of a local nfs mount to satisfy a buggy dhcp server. The checksums are needed only if a packet leaves the machine by wire. And even that is done by hardware in the NIC. Here we try to emulate the NIC checksumming because of buggy userland software. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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16 Feb 16 Feb

15:26

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c8 --- Comment #8 from Marius Tomaschewski 2011-02-16 15:26:21 UTC --- (In reply to comment #7)

...

(In reply to comment #6)

...
It is a brief performance optimization creating interoperability problems and rejected by ISC, see:

https://lists.isc.org/pipermail/dhcp-hackers/2010-April/001825.html https://lists.isc.org/pipermail/dhcp-hackers/2010-April/001832.html

Yeah, I've read already that whole thread... and came to the conclusion the dhcpd is buggy.

No, it isn't. AFAIK it verifies the checksum if there is one or skips the check if the packet does not have one and discards with incorrect one.

...

I'm not really happy to e.g. decrease the performance of a local nfs mount to satisfy a buggy dhcp server. The checksums are needed only if a packet leaves the machine by wire.

Yes, so just turn off checksums.

...

And even that is done by hardware in the NIC.

Exactly. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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15:51

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c9 Marius Tomaschewski changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |NEEDINFO InfoProvider| |okir@novell.com --- Comment #9 from Marius Tomaschewski 2011-02-16 15:51:58 UTC --- Olaf, would you take a look at this bug here? I'd tend to turn off the partial checksums via 'ethtool -K $vif tx off' or ETHTOOL_OPTIONS='-K iface tx off' instead of patching every dhcp package to handle it using ISC rejected patches. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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17 Feb 17 Feb

09:34

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c11 Olaf Kirch changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEEDINFO |NEW CC| |okir@novell.com InfoProvider|okir@novell.com | --- Comment #11 from Olaf Kirch 2011-02-17 09:34:50 UTC --- I think turning off checksums is not the right approach. Offloading checksum generation to hardware is an important performance improvement, even more so on a virtualization host, where CPU cycles are often the most contested resource. The bug here is that the packet with the partial checksum is delivered to the application. The most obvious fix would be to have the AF_PACKET recvmsg function in the kernel could fill in the checksum if it sees it's missing. It seems this approach was considered and rejected by Herbert Xu and Dave Miller, and instead they chose the alternative approach in http://git.kernel.org/linus/8dc4194 I don't remember off the top of my head whether dhcpd uses libpcap to capture packets; if that is the case, we should enhance the linux pcap routines to receive the PACKET_AUXDATA information, and check whether the TP_STATUS_CSUMNOTREADY flags is set. If that's the case, fake the correct checksum. If dhcpd uses its own packet capture functions, we should patch these. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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18 Feb 18 Feb

10:42

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c12 Marius Tomaschewski changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED --- Comment #12 from Marius Tomaschewski 2011-02-18 10:42:07 UTC --- OK, thanks Olaf! The ISC dhcp test package including this fix will be available at: http://download.opensuse.org/repositories/home:/mtomaschewski:/branches:/ope... -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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10:48

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c13 Marius Tomaschewski changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |NEEDINFO InfoProvider| |samuel.kvasnica@ims.co.at --- Comment #13 from Marius Tomaschewski 2011-02-18 10:48:45 UTC --- Samuell, I'm going to test it ... would you test if it works for you please? When it does not help when dhcpcd is running inside of the vm, please change to use dhclient instead -- in /etc/sysconfig/network/dhcp: DHCLIENT_BIN="dhclient" DHCLIENT6_BIN="dhclient6" -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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11:10

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c15 --- Comment #15 from Samuel Kvasnica 2011-02-18 11:10:48 UTC --- Olaf, thanks for speaking the clear words on checksum offload topic ! :-) Marius: I'll test the patched dhcpd during this weekend. In my setup, dhcpd is sitting in Dom0 and clients are in vm. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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13:11

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c17 --- Comment #17 from Marius Tomaschewski 2011-02-18 13:11:14 UTC --- (In reply to comment #15)

...

Olaf, thanks for speaking the clear words on checksum offload topic ! :-)

I can't resist now :-) It is as Olaf writes:

...

The bug here is that the packet with the partial checksum is delivered to the application.

That is: the bug is in the xen kernel (driver) -- we just go to patch every application using UDP instead of xen. The problem AFAIR does not occur at all when: the dhcp server is not in xen dom0 of the same host or when the dhcp server is running in a vm too [at least on kvm]. AFAIK, the OS/stack can make partial checksums, that will be corrected/completed by the hardware (in this case job for the xen NIC driver) _before_ the packets go over the wire to the another host. And this correction does not happen here. But when Olaf means, that this is the way we have to take [better than to disable the partial checksums what AFAIK happens automatically on kernels that do not support GSO but e.g. TSO only], I'll patch the apps. Question is, what is the next app using UDP we're going to patch -- ipsec? -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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13:21

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c18 --- Comment #18 from Marius Tomaschewski 2011-02-18 13:21:46 UTC --- Created an attachment (id=414995) --> (http://bugzilla.novell.com/attachment.cgi?id=414995) dhcp-4.2.0-xen-checksum.patch (ISC dhcp 4.1 & 4.2) -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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13:23

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c19 --- Comment #19 from Marius Tomaschewski 2011-02-18 13:23:02 UTC --- Created an attachment (id=414996) --> (http://bugzilla.novell.com/attachment.cgi?id=414996) dhcp-3.1-ESV-xen-checksum.patch (4.2 patch merged for ISC dhcp 3.1) -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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17:27

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c20 --- Comment #20 from Marius Tomaschewski 2011-02-18 17:26:59 UTC --- FYI: The patch does not work for me (at least the 3.1-ESV variant) as it is on SLES-11-SP1 vs. SLES-11-SP1 with a patched package installed on both. While _renew_ (use a short lease, e.g. 60 sec), the following messages are shown on the server: Feb 18 18:11:17 pollux dhcpd: 3 bad udp checksums in 5 packets Feb 18 18:11:57 pollux dhcpd: DHCPREQUEST for 172.16.4.101 from 00:16:3e:24:17:24 (pollux1) via br4000 Feb 18 18:11:57 pollux dhcpd: DHCPACK on 172.16.4.101 to 00:16:3e:24:17:24 (pollux1) via br4000 Feb 18 18:12:08 pollux dhcpd: DHCPREQUEST for 172.16.4.101 from 00:16:3e:24:17:24 (pollux1) via br4000 Feb 18 18:12:08 pollux dhcpd: DHCPACK on 172.16.4.101 to 00:16:3e:24:17:24 (pollux1) via br4000 Feb 18 18:12:10 pollux dhcpd: DHCPDISCOVER from 00:16:3e:24:17:24 (pollux1) via br4000 Feb 18 18:12:10 pollux dhcpd: DHCPOFFER on 172.16.4.101 to 00:16:3e:24:17:24 (pollux1) via br4000 Feb 18 18:12:16 pollux dhcpd: DHCPREQUEST for 172.16.4.101 (172.16.4.2) from 00:16:3e:24:17:24 (pollux1) via br4000 Feb 18 18:12:16 pollux dhcpd: DHCPACK on 172.16.4.101 to 00:16:3e:24:17:24 (pollux1) via br4000 (Also when dhcpcd (unpatched) is used) on the client side, the bad UDP checksum message is logged on [dhcpcd only] whie every renew request response (and the client fails into rebind state then)... -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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23 Feb 23 Feb

15:03

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c22 Marius Tomaschewski changed: What |Removed |Added ---------------------------------------------------------------------------- InfoProvider|samuel.kvasnica@ims.co.at |mmarek@novell.com --- Comment #22 from Marius Tomaschewski 2011-02-23 15:03:32 UTC --- The patch does not work for me... Or more exactly: the patch seems to be not the problem: the kernel seems to not to provide the partial checksum info. None of the packets have the "aux->tp_status & TP_STATUS_CSUMNOTREADY" flag set -- logging some debug info I get: dhclient: recvmsg with tpacket_auxdata dhclient: cmsg 0x7fff36c1c210 nocsum: 0 dhclient: decode_udp_ip_header(nocsum: 0) => offset: 28 dhclient: DHCPACK from 172.16.4.3 ifup: eth0 name: Virtual Ethernet Card 0 dhclient: bound to 172.16.4.101 -- renewal in 51 seconds. dhclient: DHCPREQUEST on eth0 to 172.16.4.3 port 67 dhclient: DHCPREQUEST on eth0 to 172.16.4.3 port 67 dhclient: DHCPREQUEST on eth0 to 172.16.4.3 port 67 dhclient: DHCPREQUEST on eth0 to 172.16.4.3 port 67 dhclient: DHCPREQUEST on eth0 to 172.16.4.3 port 67 dhclient: DHCPREQUEST on eth0 to 255.255.255.255 port 67 dhclient: recvmsg with tpacket_auxdata dhclient: cmsg 0x7fff36c1c210 nocsum: 0 dhclient: decode_udp_ip_header(nocsum: 0) => offset: -1 dhclient: DHCPREQUEST on eth0 to 255.255.255.255 port 67 dhclient: recvmsg with tpacket_auxdata dhclient: cmsg 0x7fff36c1c210 nocsum: 0 dhclient: decode_udp_ip_header(nocsum: 0) => offset: -1 dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3 dhclient: recvmsg with tpacket_auxdata dhclient: cmsg 0x7fff36c1c210 nocsum: 0 dhclient: decode_udp_ip_header(nocsum: 0) => offset: 28 dhclient: DHCPOFFER from 172.16.4.3 dhclient: DHCPREQUEST on eth0 to 255.255.255.255 port 67 dhcpd: recvmsg with tpacket_auxdata dhcpd: cmsg 0x7fffadf3d150 nocsum: 0 dhcpd: decode_udp_ip_header(nocsum: 0) => offset: 28 dhcpd: DHCPDISCOVER from 00:16:3e:3e:81:86 via br4000 dhcpd: DHCPOFFER on 172.16.4.101 to 00:16:3e:3e:81:86 (abraxas-xen1) via br4000 dhcpd: recvmsg with tpacket_auxdata dhcpd: cmsg 0x7fffadf3d150 nocsum: 0 dhcpd: decode_udp_ip_header(nocsum: 0) => offset: 28 dhcpd: DHCPREQUEST for 172.16.4.101 (172.16.4.3) from 00:16:3e:3e:81:86 (abraxas-xen1) via br4000 dhcpd: DHCPACK on 172.16.4.101 to 00:16:3e:3e:81:86 (abraxas-xen1) via br4000 dhcpd: recvmsg with tpacket_auxdata dhcpd: cmsg 0x7fffadf3d150 nocsum: 0 dhcpd: 5 bad udp checksums in 7 packets dhcpd: decode_udp_ip_header(nocsum: 0) => offset: -1 dhcpd: recvmsg with tpacket_auxdata dhcpd: cmsg 0x7fffadf3d150 nocsum: 0 dhcpd: decode_udp_ip_header(nocsum: 0) => offset: -1 dhcpd: recvmsg with tpacket_auxdata dhcpd: cmsg 0x7fffadf3d150 nocsum: 0 dhcpd: decode_udp_ip_header(nocsum: 0) => offset: -1 dhcpd: recvmsg with tpacket_auxdata dhcpd: cmsg 0x7fffadf3d150 nocsum: 0 dhcpd: decode_udp_ip_header(nocsum: 0) => offset: -1 dhcpd: recvmsg with tpacket_auxdata dhcpd: cmsg 0x7fffadf3d150 nocsum: 0 dhcpd: decode_udp_ip_header(nocsum: 0) => offset: -1 dhcpd: recvmsg with tpacket_auxdata dhcpd: cmsg 0x7fffadf3d150 nocsum: 0 dhcpd: decode_udp_ip_header(nocsum: 0) => offset: 28 dhcpd: DHCPREQUEST for 172.16.4.101 from 00:16:3e:3e:81:86 (abraxas-xen1) via br4000 dhcpd: DHCPACK on 172.16.4.101 to 00:16:3e:3e:81:86 (abraxas-xen1) via br4000 dhcpd: recvmsg with tpacket_auxdata dhcpd: cmsg 0x7fffadf3d150 nocsum: 0 dhcpd: decode_udp_ip_header(nocsum: 0) => offset: 28 dhcpd: DHCPREQUEST for 172.16.4.101 from 00:16:3e:3e:81:86 (abraxas-xen1) via br4000 dhcpd: DHCPACK on 172.16.4.101 to 00:16:3e:3e:81:86 (abraxas-xen1) via br4000 The code in the current kernel differs a lot from the http://git.kernel.org/linus/8dc4194 patched version. AFAIS, some parts of it are missing/removed. Michal, the kernel does not provide any marked packets in the another domain; can you take a look what is broken there? -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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15:19

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c23 Michal Marek changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEEDINFO |ASSIGNED InfoProvider|mmarek@novell.com | --- Comment #23 from Michal Marek 2011-02-23 15:19:16 UTC --- I'm not a networking expert, sorry. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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15:47

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c24 Marius Tomaschewski changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |NEEDINFO InfoProvider| |kernel-maintainers@forge.pr | |ovo.novell.com --- Comment #24 from Marius Tomaschewski 2011-02-23 15:47:48 UTC --- See comment 22 - the kernel does not provide the partial checksum info in "aux->tp_status & TP_STATUS_CSUMNOTREADY" flag but instead just the bogus checksum arrives. What is wrong here - some kernel bits missed? BTW: the patched dhcp package is in $OBS/network:dhcp/dhcp, the patch (where it is visible what the app does) is in attachment 414995. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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24 Feb 24 Feb

08:05

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c26 Olaf Kirch changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jbeulich@novell.com InfoProvider|kernel-maintainers@forge.pr |jdouglas@novell.com |ovo.novell.com | --- Comment #26 from Olaf Kirch 2011-02-24 08:04:57 UTC --- Ah. Seems there's also a XEN bug in this somewhere. Summary for the virtualization team - this problem happens with DHCP running in DomU and dhcpd running in Dom0. dhclient sends a DHCP_REQUEST packet via AF_PACKET socket, dhcpd receives it, and sends a DHCP_ACK response via AF_INET/SOCK_DGRAM socket (ie UDP). This response is seen by dhclient, but it finds that the checksum is not correct. The reason for this is that the Linux network layer doesn't compute the full checksum over UDP packets in sendmsg because we may want to leave this to a network device capable of checksum offloading. So in udp_send, we just set skb->ip_summed = CHECKSUM_PARTIAL. What we want to happen is that inside DomU, the AF_PACKET recvmsg routine will still see the CHECKSUM_PARTIAL flag and tells the application that there's no full checksum information; but that doesn't seem to happen. According to Marius' testing, either the AF_PACKET recvmsg implementation has a bug, or XEN doesn't pass on CHECKSUM_PARTIAL correctly. Now, I looked at the code a bit. We're concerned about the Dom0 -> DomU path, meaning (I think) the part of netback that receives skbs and pushes them to netfront, and the part in netfront that queues them to the NAPI layer. Looking at netback, I see this in net_rx_action: if (skb->ip_summed == CHECKSUM_PARTIAL) /* local packet? */ flags |= NETRXF_csum_blank | NETRXF_data_validated; else if (skb->proto_data_valid) /* remote but checksummed? */ flags |= NETRXF_data_validated; In the netfront driver, the corresponding piece of code in netif_poll looks like this: if (rx->flags & (NETRXF_data_validated|NETRXF_csum_blank)) skb->ip_summed = CHECKSUM_UNNECESSARY; else skb->ip_summed = CHECKSUM_NONE; #ifdef CONFIG_XEN skb->proto_data_valid = (skb->ip_summed != CHECKSUM_NONE); This seems to suggest that on the guest side, the packet comes out being marked as CHECKSUM_UNNECESSARY. I don't know what the intended semantics of the various flags are, but it seems to me some more fine-grained distinction between the different levels of checksumming are needed here. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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09:10

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c27 --- Comment #27 from Marius Tomaschewski 2011-02-24 09:10:29 UTC --- Thanks Olaf! Just a side note: While it is possble to checksum the packet while sending e.g. DISCOVER or REQUEST via broadcast directly in the dhcp client, unicasts (RENEW request) sent via sendto are just partially checksumed by the kernel and gets discarded on the another side because of the bogus checksum. Some clients tend to send the RENEW REQUEST as broadcast (MAC ff:ff..) as well event this is a bug and not rfc conform - these packets gets discarded on [e.g. cisco] routers (relay is not involved in RENEW). See also bug 657402. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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09:18

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c28 Jan Beulich changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEEDINFO |ASSIGNED InfoProvider|jdouglas@novell.com | --- Comment #28 from Jan Beulich 2011-02-24 09:18:57 UTC --- Very likely (though I'm not a networking expert at all). In 11.4 (further improved subsequently [2.6.38-rc, not yet committed] following a recent discussion on netdev, with a possibility of pulling this back into 11.4 once sufficiently verified) I sync-ed checksum behavior with what pv-ops has been doing for a while, which particularly results in if (rx->flags & NETRXF_csum_blank) skb->ip_summed = CHECKSUM_PARTIAL; else if (rx->flags & NETRXF_data_validated) skb->ip_summed = CHECKSUM_UNNECESSARY; else skb->ip_summed = CHECKSUM_NONE; replacing the cited code sequence in netfront. So testing with the current 11.4 kernel in Dom0 and DomU-s would certainly be quite helpful. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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10:14

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c29 Marius Tomaschewski changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |NEEDINFO InfoProvider| |jbeulich@novell.com --- Comment #29 from Marius Tomaschewski 2011-02-24 10:14:39 UTC --- (In reply to comment #28)

...

Very likely (though I'm not a networking expert at all). In 11.4 (further improved subsequently [2.6.38-rc, not yet committed] following a recent discussion on netdev, with a possibility of pulling this back into 11.4

11.3 and sles11 ? ;-)

...

once sufficiently verified) I sync-ed checksum behavior with what pv-ops has been doing for a while, which particularly results in

if (rx->flags & NETRXF_csum_blank) skb->ip_summed = CHECKSUM_PARTIAL; else if (rx->flags & NETRXF_data_validated) skb->ip_summed = CHECKSUM_UNNECESSARY; else skb->ip_summed = CHECKSUM_NONE;

replacing the cited code sequence in netfront.

So testing with the current 11.4 kernel in Dom0 and DomU-s would certainly be quite helpful.

OK, I can (backup my text boxes and) update. Maybe I got it all wrong -- you write above it is not committed yet, so I assume it is not yet in http://download.opensuse.org/factory/repo/oss/suse/x86_64/kernel-xen-2.6.37-... right? Do you have kernel-xen rpms, where above patch is applied? -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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12:45

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c30 Jan Beulich changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEEDINFO |ASSIGNED Found By|--- |Community User InfoProvider|jbeulich@novell.com | --- Comment #30 from Jan Beulich 2011-02-24 12:45:20 UTC --- (In reply to comment #29)

...

...
Very likely (though I'm not a networking expert at all). In 11.4 (further improved subsequently [2.6.38-rc, not yet committed] following a recent discussion on netdev, with a possibility of pulling this back into 11.4

11.3 and sles11 ? ;-)

sle11 sp2 - yes. sp1 - probably not without an adequate amount of testing. 11.3 - not sure, but more no than yes.

...

Maybe I got it all wrong -- you write above it is not committed yet,

All I said was that the extra changes to post-11.4 kernel code aren't committed yet.

...

so I assume it is not yet in

http://download.opensuse.org/factory/repo/oss/suse/x86_64/kernel-xen-2.6.37-...

right?

The bits in 11.4 have been in git for a couple of weeks I think. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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13:01

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c31 --- Comment #31 from Marius Tomaschewski 2011-02-24 13:01:37 UTC --- (In reply to comment #30)

...

sle11 sp2 - yes. sp1 - probably not without an adequate amount of testing. 11.3 - not sure, but more no than yes.

OK. As it AFAIS does not break anything, I've submitted the ISC dhcp patch for 11.4 already and it has been accepted: $ osc ls openSUSE:11.4 dhcp | grep xen-checksum dhcp-4.2.0-xen-checksum.patch but is currently built in factory-snapshot only until now: http://download.opensuse.org/factory-snapshot/repo/oss/suse/x86_64/dhcp-4.2.... Everything older than 11.4 has to be decided by Maintenance-Team anyway. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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25 Feb 25 Feb

10:07

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c32 --- Comment #32 from Marius Tomaschewski 2011-02-25 10:07:45 UTC --- Created an attachment (id=416229) --> (http://bugzilla.novell.com/attachment.cgi?id=416229) Just additional patch logging the tpacket_auxdata/nocsum values OK, with kernel-xen-2.6.37.1-1.2.2.x86_64, that is on current factory-snapshot, the dhcp-4.2.0-xen-checksum.patch works fine (here the output with the above logging patch applied to see it): *** client: Feb 25 10:59:27 abraxas-xen1 dhclient: DHCPREQUEST on eth0 to 255.255.255.255 port 67 Feb 25 10:59:27 abraxas-xen1 dhclient: recvmsg with tpacket_auxdata Feb 25 10:59:27 abraxas-xen1 dhclient: cmsg nocsum: 0 (tp_status=1) Feb 25 10:59:27 abraxas-xen1 dhclient: decode_udp_ip_header(nocsum: 0) => offset: 28 Feb 25 10:59:27 abraxas-xen1 dhclient: DHCPACK from 172.16.4.2 Feb 25 10:59:27 abraxas-xen1 dhclient: bound to 172.16.4.102 -- renewal in 54 seconds. Feb 25 10:59:27 abraxas-xen1 dhclient: DHCPREQUEST on eth0 to 255.255.255.255 port 67 Feb 25 10:59:27 abraxas-xen1 dhclient: recvmsg with tpacket_auxdata Feb 25 10:59:27 abraxas-xen1 dhclient: cmsg nocsum: 0 (tp_status=1) Feb 25 10:59:27 abraxas-xen1 dhclient: decode_udp_ip_header(nocsum: 0) => offset: 28 Feb 25 10:59:27 abraxas-xen1 dhclient: DHCPACK from 172.16.4.2 *** server: Feb 25 10:59:27 abraxas dhcpd: recvmsg with tpacket_auxdata Feb 25 10:59:27 abraxas dhcpd: cmsg nocsum: 0 (tp_status=1) Feb 25 10:59:27 abraxas dhcpd: decode_udp_ip_header(nocsum: 0) => offset: 28 Feb 25 10:59:27 abraxas dhcpd: DHCPREQUEST for 172.16.4.102 from 00:16:3e:3e:81:86 (abraxas-xen1) via br4000 Feb 25 10:59:27 abraxas dhcpd: DHCPACK on 172.16.4.102 to 00:16:3e:3e:81:86 (abraxas-xen1) via br4000 Feb 25 11:00:22 abraxas dhcpd: recvmsg with tpacket_auxdata Feb 25 11:00:22 abraxas dhcpd: cmsg nocsum: 8 (tp_status=9) Feb 25 11:00:22 abraxas dhcpd: decode_udp_ip_header(nocsum: 8) => offset: 28 Feb 25 11:00:22 abraxas dhcpd: DHCPREQUEST for 172.16.4.102 from 00:16:3e:3e:81:86 (abraxas-xen1) via br4000 Feb 25 11:00:22 abraxas dhcpd: DHCPACK on 172.16.4.102 to 00:16:3e:3e:81:86 (abraxas-xen1) via br4000 -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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10:16

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c33 Marius Tomaschewski changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |NEEDINFO InfoProvider| |maintenance@opensuse.org --- Comment #33 from Marius Tomaschewski 2011-02-25 10:16:45 UTC --- Mr Maintenance, what about openSUSE updates? I guess we don't need any, as this is a missed feature, right? See also comment 30 (and 20, 22), it does not work on any released kernel-xen. BTW: A 11.4 patch doing same for dhcpcd is the next one on my TODO. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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10:41

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c34 --- Comment #34 from Jan Beulich 2011-02-25 10:41:16 UTC --- (In reply to comment #29)

...

11.3 and sles11 ? ;-)

Actually, for sle11 the proposed patch in bug 652942 comment 41 could be a less intrusive alternative to what is done in 11.4 and master, and hence more reasonable to consider applying before sp2. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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15 Mar 15 Mar

19:41

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c35 --- Comment #35 from Marius Tomaschewski 2011-03-15 19:41:37 UTC --- Created an attachment (id=419500) --> (http://bugzilla.novell.com/attachment.cgi?id=419500) dhcpcd-3.2.3-xen-checksum -- test patch Currently the patch logs the nocsum flag as error (to make sure it is visible): dhcpcd[13197]: eth0: renewing lease of 192.168.1.100 dhcpcd[13197]: eth0: sending DHCP_REQUEST with xid 0x3fa5c7f2 to 192.168.1.1 dhcpcd[13197]: eth0: waiting for 45 seconds dhcpcd[13197]: eth0: recvmsg: nocsum=8 ^^^^^^^^^^^^^^^^^ dhcpcd[13197]: eth0: got a packet with xid 0x3fa5c7f2 The patch is applied in: $OBS/home:mtomaschewski:branches:network:dhcp/dhcpcd Please test on 11.4, where the kernel provides the partial info, thanks! -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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8 Apr 8 Apr

13:26

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c39 Swamp Workflow Management changed: What |Removed |Added ---------------------------------------------------------------------------- Status Whiteboard| |maint:released:11.4:40008 --- Comment #39 from Swamp Workflow Management 2011-04-08 13:26:40 UTC --- Update released for: dhcp, dhcp-client, dhcp-client-debuginfo, dhcp-debuginfo, dhcp-debugsource, dhcp-devel, dhcp-doc, dhcp-relay, dhcp-relay-debuginfo, dhcp-server, dhcp-server-debuginfo Products: openSUSE 11.4 (debug, i586, x86_64) -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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17:06

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c40 Swamp Workflow Management changed: What |Removed |Added ---------------------------------------------------------------------------- Status Whiteboard|maint:released:11.4:40008 |maint:released:11.4:40008 | |maint:released:sle11-sp1:40 | |021 --- Comment #40 from Swamp Workflow Management 2011-04-08 17:06:14 UTC --- Update released for: dhcp, dhcp-client, dhcp-debuginfo, dhcp-debugsource, dhcp-devel, dhcp-relay, dhcp-server Products: SLE-DEBUGINFO 11-SP1 (i386, ia64, ppc64, s390x, x86_64) SLE-DESKTOP 11-SP1 (i386, x86_64) SLE-SDK 11-SP1 (i386, ia64, ppc64, s390x, x86_64) SLE-SERVER 11-SP1 (i386, ia64, ppc64, s390x, x86_64) SLES4VMWARE 11-SP1 (i386, x86_64) -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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17:56

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c41 Swamp Workflow Management changed: What |Removed |Added ---------------------------------------------------------------------------- Status Whiteboard|maint:released:11.4:40008 |maint:released:11.4:40008 |maint:released:sle11-sp1:40 |maint:released:sle11-sp1:40 |021 |021 | |maint:released:sle11-sp1:40 | |019 --- Comment #41 from Swamp Workflow Management 2011-04-08 17:56:12 UTC --- Update released for: dhcpcd, dhcpcd-debuginfo, dhcpcd-debugsource Products: SLE-DEBUGINFO 11-SP1 (i386, ia64, ppc64, s390x, x86_64) SLE-DESKTOP 11-SP1 (i386, x86_64) SLE-SERVER 11-SP1 (i386, ia64, ppc64, s390x, x86_64) SLES4VMWARE 11-SP1 (i386, x86_64) -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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13 Apr 13 Apr

13:34

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c42 Swamp Workflow Management changed: What |Removed |Added ---------------------------------------------------------------------------- Status Whiteboard|maint:released:11.4:40008 |maint:released:11.4:40008 |maint:released:sle11-sp1:40 |maint:released:sle11-sp1:40 |021 |021 |maint:released:sle11-sp1:40 |maint:released:sle11-sp1:40 |019 |019 | |maint:released:11.2:40102 --- Comment #42 from Swamp Workflow Management 2011-04-13 13:34:45 UTC --- Update released for: dhcpcd, dhcpcd-debuginfo, dhcpcd-debugsource Products: openSUSE 11.2 (debug, i586, x86_64) -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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18 Apr 18 Apr

08:44

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c43 Marius Tomaschewski changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution| |FIXED --- Comment #43 from Marius Tomaschewski 2011-04-18 08:44:42 UTC --- OK, dhcp clients are fixed. Works fine on 11.4. Cloning bug to fix the kernel -- see comment 34. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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08:50

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c Marius Tomaschewski changed: What |Removed |Added ---------------------------------------------------------------------------- Blocks| |688079 -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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19 Apr 19 Apr

16:21

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c44 Swamp Workflow Management changed: What |Removed |Added ---------------------------------------------------------------------------- Status Whiteboard|maint:released:11.4:40008 |maint:released:11.4:40008 |maint:released:sle11-sp1:40 |maint:released:sle11-sp1:40 |021 |021 |maint:released:sle11-sp1:40 |maint:released:sle11-sp1:40 |019 |019 |maint:released:11.2:40102 |maint:released:11.2:40102 | |maint:released:sle11-sp1:40 | |308 --- Comment #44 from Swamp Workflow Management 2011-04-19 16:21:04 UTC --- Update released for: dhcpcd, dhcpcd-debuginfo, dhcpcd-debugsource Products: SLE-DEBUGINFO 11-SP1 (i386, ia64, ppc64, s390x, x86_64) SLE-DESKTOP 11-SP1 (i386, x86_64) SLE-SERVER 11-SP1 (i386, ia64, ppc64, s390x, x86_64) SLES4VMWARE 11-SP1 (i386, x86_64) -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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28 Apr 28 Apr

11:52

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c45 --- Comment #45 from Bernhard Wiedemann 2011-04-28 13:52:21 CEST --- This is an autogenerated message for OBS integration: This bug (668194) was mentioned in https://build.opensuse.org/request/show/66202 https://build.opensuse.org/request/show/66233 https://build.opensuse.org/request/show/66414 https://build.opensuse.org/request/show/66606 -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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14 May 14 May

09:09

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c46 Swamp Workflow Management changed: What |Removed |Added ---------------------------------------------------------------------------- Status Whiteboard|maint:released:11.4:40008 |maint:released:11.4:40008 |maint:released:sle11-sp1:40 |maint:released:sle11-sp1:40 |021 |021 |maint:released:sle11-sp1:40 |maint:released:sle11-sp1:40 |019 |019 |maint:released:11.2:40102 |maint:released:11.2:40102 |maint:released:sle11-sp1:40 |maint:released:sle11-sp1:40 |308 |308 | |maint:released:sle11-sp1:47 | |072 --- Comment #46 from Swamp Workflow Management 2012-05-14 09:09:23 UTC --- Update released for: btrfs-kmp-default, btrfs-kmp-trace, btrfs-kmp-xen, cluster-network-kmp-default, cluster-network-kmp-trace, cluster-network-kmp-xen, ext4dev-kmp-default, ext4dev-kmp-trace, ext4dev-kmp-xen, gfs2-kmp-default, gfs2-kmp-trace, gfs2-kmp-xen, hyper-v-kmp-default, hyper-v-kmp-trace, kernel-default, kernel-default-base, kernel-default-debuginfo, kernel-default-debugsource, kernel-default-devel, kernel-default-devel-debuginfo, kernel-default-extra, kernel-desktop-devel, kernel-ec2, kernel-ec2-base, kernel-ec2-debuginfo, kernel-ec2-debugsource, kernel-ec2-devel, kernel-ec2-devel-debuginfo, kernel-ec2-extra, kernel-source, kernel-source-debuginfo, kernel-source-vanilla, kernel-syms, kernel-trace, kernel-trace-base, kernel-trace-debuginfo, kernel-trace-debugsource, kernel-trace-devel, kernel-trace-devel-debuginfo, kernel-trace-extra, kernel-xen, kernel-xen-base, kernel-xen-debuginfo, kernel-xen-debugsource, kernel-xen-devel, kernel-xen-devel-debuginfo, kernel-xen-extra, ocfs2-kmp-default, ocfs2-kmp-trace, ocfs2-kmp-xen Products: SLE-DEBUGINFO 11-SP1 (x86_64) SLE-DESKTOP 11-SP1 (x86_64) SLE-HAE 11-SP1 (x86_64) SLE-SERVER 11-SP1 (x86_64) SLES4VMWARE 11-SP1 (x86_64) -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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09:27

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c47 Swamp Workflow Management changed: What |Removed |Added ---------------------------------------------------------------------------- Status Whiteboard|maint:released:11.4:40008 |maint:released:11.4:40008 |maint:released:sle11-sp1:40 |maint:released:sle11-sp1:40 |021 |021 |maint:released:sle11-sp1:40 |maint:released:sle11-sp1:40 |019 |019 |maint:released:11.2:40102 |maint:released:11.2:40102 |maint:released:sle11-sp1:40 |maint:released:sle11-sp1:40 |308 |308 |maint:released:sle11-sp1:47 |maint:released:sle11-sp1:47 |072 |069 --- Comment #47 from Swamp Workflow Management 2012-05-14 09:27:13 UTC --- Update released for: btrfs-kmp-default, btrfs-kmp-trace, cluster-network-kmp-default, cluster-network-kmp-trace, ext4dev-kmp-default, ext4dev-kmp-trace, gfs2-kmp-default, gfs2-kmp-trace, kernel-default, kernel-default-base, kernel-default-debuginfo, kernel-default-debugsource, kernel-default-devel, kernel-default-devel-debuginfo, kernel-default-extra, kernel-source, kernel-source-debuginfo, kernel-source-vanilla, kernel-syms, kernel-trace, kernel-trace-base, kernel-trace-debuginfo, kernel-trace-debugsource, kernel-trace-devel, kernel-trace-devel-debuginfo, kernel-trace-extra, ocfs2-kmp-default, ocfs2-kmp-trace Products: SLE-DEBUGINFO 11-SP1 (ia64) SLE-HAE 11-SP1 (ia64) SLE-SERVER 11-SP1 (ia64) SLE-SERVER 11-SP1-FOR-SP2 (ia64) -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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09:36

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c48 Swamp Workflow Management changed: What |Removed |Added ---------------------------------------------------------------------------- Status Whiteboard|maint:released:11.4:40008 |maint:released:11.4:40008 |maint:released:sle11-sp1:40 |maint:released:sle11-sp1:40 |021 |021 |maint:released:sle11-sp1:40 |maint:released:sle11-sp1:40 |019 |019 |maint:released:11.2:40102 |maint:released:11.2:40102 |maint:released:sle11-sp1:40 |maint:released:sle11-sp1:40 |308 |308 |maint:released:sle11-sp1:47 |maint:released:sle11-sp1:47 |069 |069 | |maint:released:sle11-sp1:47 | |071 --- Comment #48 from Swamp Workflow Management 2012-05-14 09:36:41 UTC --- Update released for: btrfs-kmp-default, btrfs-kmp-trace, cluster-network-kmp-default, cluster-network-kmp-trace, ext4dev-kmp-default, ext4dev-kmp-trace, gfs2-kmp-default, gfs2-kmp-trace, kernel-default, kernel-default-base, kernel-default-debuginfo, kernel-default-debugsource, kernel-default-devel, kernel-default-devel-debuginfo, kernel-default-extra, kernel-default-man, kernel-source, kernel-source-debuginfo, kernel-source-vanilla, kernel-syms, kernel-trace, kernel-trace-base, kernel-trace-debuginfo, kernel-trace-debugsource, kernel-trace-devel, kernel-trace-devel-debuginfo, kernel-trace-extra, kernel-trace-man, ocfs2-kmp-default, ocfs2-kmp-trace Products: SLE-DEBUGINFO 11-SP1 (s390x) SLE-HAE 11-SP1 (s390x) SLE-SERVER 11-SP1 (s390x) SLE-SERVER 11-SP1-FOR-SP2 (s390x) -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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09:56

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c49 Swamp Workflow Management changed: What |Removed |Added ---------------------------------------------------------------------------- Status Whiteboard|maint:released:11.4:40008 |maint:released:11.4:40008 |maint:released:sle11-sp1:40 |maint:released:sle11-sp1:40 |021 |021 |maint:released:sle11-sp1:40 |maint:released:sle11-sp1:40 |019 |019 |maint:released:11.2:40102 |maint:released:11.2:40102 |maint:released:sle11-sp1:40 |maint:released:sle11-sp1:40 |308 |308 |maint:released:sle11-sp1:47 |maint:released:sle11-sp1:47 |069 |069 |maint:released:sle11-sp1:47 |maint:released:sle11-sp1:47 |071 |070 --- Comment #49 from Swamp Workflow Management 2012-05-14 09:56:53 UTC --- Update released for: btrfs-kmp-default, btrfs-kmp-ppc64, btrfs-kmp-trace, cluster-network-kmp-default, cluster-network-kmp-ppc64, cluster-network-kmp-trace, ext4dev-kmp-default, ext4dev-kmp-ppc64, ext4dev-kmp-trace, gfs2-kmp-default, gfs2-kmp-ppc64, gfs2-kmp-trace, kernel-default, kernel-default-base, kernel-default-debuginfo, kernel-default-debugsource, kernel-default-devel, kernel-default-extra, kernel-ppc64, kernel-ppc64-base, kernel-ppc64-debuginfo, kernel-ppc64-debugsource, kernel-ppc64-devel, kernel-ppc64-extra, kernel-source, kernel-source-debuginfo, kernel-source-vanilla, kernel-syms, kernel-trace, kernel-trace-base, kernel-trace-debuginfo, kernel-trace-debugsource, kernel-trace-devel, kernel-trace-extra, ocfs2-kmp-default, ocfs2-kmp-ppc64, ocfs2-kmp-trace Products: SLE-DEBUGINFO 11-SP1 (ppc64) SLE-HAE 11-SP1 (ppc64) SLE-SERVER 11-SP1 (ppc64) SLE-SERVER 11-SP1-FOR-SP2 (ppc64) -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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14:14

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

bugzilla_noreply＠novell.com

15:10

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

bugzilla_noreply＠novell.com

16:11

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

bugzilla_noreply＠novell.com

17:14

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

bugzilla_noreply＠novell.com

18:12

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

bugzilla_noreply＠novell.com

6 Sep 6 Sep

09:05

New subject: [Bug 668194] dhcp client not working properly in Xen domU due to partial checksum offload

https://bugzilla.novell.com/show_bug.cgi?id=668194 https://bugzilla.novell.com/show_bug.cgi?id=668194#c55 Swamp Workflow Management changed: What |Removed |Added ---------------------------------------------------------------------------- Status Whiteboard|maint:released:11.4:40008 |maint:released:11.4:40008 |maint:released:sle11-sp1:40 |maint:released:sle11-sp1:40 |021 |021 |maint:released:sle11-sp1:40 |maint:released:sle11-sp1:40 |019 |019 |maint:released:11.2:40102 |maint:released:11.2:40102 |maint:released:sle11-sp1:40 |maint:released:sle11-sp1:40 |308 |308 |maint:released:sle11-sp1:47 |maint:released:sle11-sp1:47 |069 |069 |maint:released:sle11-sp1:47 |maint:released:sle11-sp1:47 |070 |070 |maint:released:sle11-sp1:47 |maint:released:sle11-sp1:47 |077 |077 Status Whiteboard|maint:released:sle11-sp1:47 |maint:released:sle11-sp1:47 |073 |073 |maint:released:sle11-sp1:47 |maint:released:sle11-sp1:47 |074 |074 |maint:released:sle11-sp1:47 |maint:released:sle11-sp1:47 |075 |075 |maint:released:sle11-sp1:47 |maint:released:sle11-sp1:47 |076 |076 | |maint:released:sle11-sp1:47 | |068 --- Comment #55 from Swamp Workflow Management 2012-09-06 09:05:18 UTC --- Update released for: btrfs-kmp-default, btrfs-kmp-pae, btrfs-kmp-trace, btrfs-kmp-xen, cluster-network-kmp-default, cluster-network-kmp-pae, cluster-network-kmp-trace, cluster-network-kmp-xen, ext4dev-kmp-default, ext4dev-kmp-pae, ext4dev-kmp-trace, ext4dev-kmp-xen, gfs2-kmp-default, gfs2-kmp-pae, gfs2-kmp-trace, gfs2-kmp-xen, hyper-v-kmp-default, hyper-v-kmp-pae, hyper-v-kmp-trace, kernel-default, kernel-default-base, kernel-default-devel, kernel-default-extra, kernel-desktop-devel, kernel-ec2, kernel-ec2-base, kernel-ec2-devel, kernel-ec2-extra, kernel-pae, kernel-pae-base, kernel-pae-devel, kernel-pae-extra, kernel-source, kernel-source-vanilla, kernel-syms, kernel-trace, kernel-trace-base, kernel-trace-devel, kernel-trace-extra, kernel-xen, kernel-xen-base, kernel-xen-devel, kernel-xen-extra, ocfs2-kmp-default, ocfs2-kmp-pae, ocfs2-kmp-trace, ocfs2-kmp-xen Products: SLE-DEBUGINFO 11-SP1 (i386) SLE-DESKTOP 11-SP1 (i386) SLE-DESKTOP 11-SP1-FOR-SP2 (i386) SLE-HAE 11-SP1 (i386) SLE-SERVER 11-SP1 (i386) SLE-SERVER 11-SP1-FOR-SP2 (i386) SLES4VMWARE 11-SP1 (i386) -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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[Bug 668194] New: dhcp client not working properly in Xen domU due to partial checksum offload

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