Hi! r285785 still isn't MFCed. RC2 is coming soon.
2015-07-23 10:54 GMT+03:00 Pavel Timofeev <tim...@gmail.com>: > Ok, sorry! > > 2015-07-23 7:51 GMT+03:00 Wei Hu <w...@microsoft.com>: >> The TCP offloading is still working on these platforms. There is no flag to >> distinguish UDP and TCP offloading, so the RXCSUM and TXCSUM are still set. >> Let me know if there is any other way to show it properly. >> >> Thanks, >> Wei >> >> >> -----Original Message----- >> From: Pavel Timofeev [mailto:tim...@gmail.com] >> Sent: Wednesday, July 22, 2015 9:04 PM >> To: Wei Hu <w...@microsoft.com> >> Cc: Slawa Olhovchenkov <s...@zxy.spb.ru>; freebsd-current@freebsd.org; >> freebsd-virtualizat...@freebsd.org >> Subject: Re: MS DNS doesn't answer to CURRENT under Hyper-V >> >> Hi! I see you have done the code for disabling UDP checksum offloading when >> running on the Hyper-V on Windows Server 2012 and earlier hosts >> >> https://svnweb.freebsd.org/base?view=revision&revision=285785 >> >> I tried new CURRENT and it works. Thank you! >> >> A small note here: while it disables and works it still shows RXCSUM and >> TSCSUM in iface's options: >> >> root@proxy:/usr/src # ifconfig hn0 >> hn0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 >> options=31b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,TSO4,TSO6> >> ether 00:15:5d:02:9c:09 >> inet 192.168.25.26 netmask 0xffffffc0 broadcast 192.168.25.63 >> nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> >> >> Is it possible to hide it automatically if it's disabled by new code? >> >> >> 2015-07-13 11:06 GMT+03:00 Wei Hu <w...@microsoft.com>: >>> We have root caused the problem. This issue happens on the Hyper-Vs on >>> Windows Server 2012 (Win 8.0) and earlier releases. On these releases, the >>> UPD checksum offloading on host side does not work properly. The workaround >>> is to disable UPD checksum offloading in the FreeBSD guest through >>> 'ifconfig'. We are also working on a patch to turn off UPD checksum >>> offloading in the netvsc driver when detecting the Hyper-V releases. >>> >>> The UDP checksum offloading works fine on Windows Server 2012R2 and Win 8.1 >>> hosts. >>> >>> Thanks Pavel and Slawa for the support. >>> >>> Wei >>> >>> >>>> -----Original Message----- >>>> From: owner-freebsd-virtualizat...@freebsd.org [mailto:owner-freebsd- >>>> virtualizat...@freebsd.org] On Behalf Of Pavel Timofeev >>>> Sent: Wednesday, July 8, 2015 4:06 PM >>>> To: Slawa Olhovchenkov >>>> Cc: freebsd-current@freebsd.org; freebsd-virtualizat...@freebsd.org >>>> Subject: Re: MS DNS doesn't answer to CURRENT under Hyper-V >>>> >>>> Ok, r284746 is the root of the problem. MS DNS works under r284745 >>>> and doesn't work under r284746. >>>> Slawa, what should I look at in wireshark output? >>>> >>>> >>>> 2015-07-07 18:49 GMT+03:00 Slawa Olhovchenkov <s...@zxy.spb.ru>: >>>> > On Tue, Jul 07, 2015 at 06:04:46PM +0300, Pavel Timofeev wrote: >>>> > >>>> >> Well, turning off checksum offloading by `ifconfig hn0 -txcsum >>>> >> -rxcsum` definitely helps. >>>> >> >>>> >> As for tcpdump I'm not completely sure if I did it right, but I >>>> >> see "bad udp cksum" phrase: >>>> >> >>>> >> # tcpdump -i hn0 -vvv -nn udp dst port 53 >>>> >> tcpdump: listening on hn0, link-type EN10MB (Ethernet), capture >>>> >> size >>>> >> 262144 bytes >>>> >> 18:01:19.139994 IP (tos 0x0, ttl 64, id 61218, offset 0, flags >>>> >> [none], proto UDP (17), length 51) >>>> >> 192.168.25.26.45683 > 192.168.25.3.53: [bad udp cksum 0xb39e >>>> >> -> 0xf210!] 52886+ A? ya.ru. (23) >>>> >> 18:01:24.140544 IP (tos 0x0, ttl 64, id 17293, offset 0, flags >>>> >> [none], proto UDP (17), length 51) >>>> >> 192.168.25.26.12575 > 192.168.25.3.53: [bad udp cksum 0xb39e >>>> >> -> 0x7365!] 52886+ A? ya.ru. (23) >>>> > >>>> > tcpdump "bad udp cksum" is normal on FreeBSD host in case checksum >>>> > offload (and may be need only for help finding issuse in code). >>>> > Need wireshark capturing from MS DNS host (or from mirroring port). >>>> _______________________________________________ >>>> freebsd-virtualizat...@freebsd.org mailing list >>>> http://lists.freebsd.org/mailman/listinfo/freebsd-virtualization >>>> To unsubscribe, send any mail to "freebsd-virtualization- >>>> unsubscr...@freebsd.org" _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
