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| twaapo | hi, how come if i to ofproto/trace with tcp i can specffy tp_dst, but not with udp? | 11:56 |
|---|---|---|
| twaapo | maybe ovs-appctl arg parse bug? | 11:59 |
| imaximets | twaapo, iiuc, tp_{src,dst} is a synonym for tcp_{src,dst} that is defined by OpenFlow spec. For UDP you need to use udp_{src,dst}. | 12:13 |
| twaapo | heh | 12:14 |
| twaapo | imaximets: ty | 12:14 |
| twaapo | http://flowgrammable.org/sdn/openflow/classifiers/ was a bit confusing | 12:14 |
| twaapo | i even tried up_dst | 12:14 |
| twaapo | guess its not official docs | 12:14 |
| imaximets | twaapo, hmm. I used openvswitch sources as a reference. :) Let me check actual specs. | 12:17 |
| twaapo | now I look at it its possibly OF version thing | 12:17 |
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| imaximets | twaapo, you're, probably, right that it's a version-specific thing. I'm having trouble making a good decision based on OF spec, I don't thing that strings like this are actually specified. So, I'd suggest to just use udp_{src_dst}. At least, that is how OVS implements parsing for a long time. You may also ask on ovs-discuss, Ben might shed some light on the implementation. | 12:49 |
| twaapo | thanks man, im good thats at least 1 tier too academic for my purposes | 12:51 |
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| mmichelson | Hi everyone, I'll start the meeting in a couple of minutes | 18:13 |
| numans | Hello | 18:14 |
| * numans attending the meeting for 4 weeks. | 18:14 | |
| blp | Good morning. | 18:14 |
| blp | /afternoon/evening | 18:14 |
| mmichelson | numans, that's a long meeting | 18:14 |
| blp | I'm trying to port new features to the ddlog northd. There's a big new feature for bfd. It has basically no documentation, and none that says what it's for. What's it for? | 18:15 |
| mmichelson | hold up blp | 18:16 |
| _lore_ | hi all | 18:16 |
| mmichelson | #startmeeting ovn_community_development_meeting | 18:16 |
| openstack | Meeting started Thu Feb 4 18:16:11 2021 UTC and is due to finish in 60 minutes. The chair is mmichelson. Information about MeetBot at http://wiki.debian.org/MeetBot. | 18:16 |
| openstack | Useful Commands: #action #agreed #help #info #idea #link #topic #startvote. | 18:16 |
| openstack | The meeting name has been set to 'ovn_community_development_meeting' | 18:16 |
| blp | OK, I'll ask again then. | 18:16 |
| mmichelson | OK, now :) | 18:16 |
| blp | I'm trying to port new features to the ddlog northd. There's a big new feature for bfd. It has basically no documentation, and none that says what it's for. What's it for? | 18:16 |
| blp | "Contains BFD parameter for ovn-controller bfd configuration." is not good documentation. | 18:16 |
| _lore_ | blp: sorry for that | 18:16 |
| blp | If you can help me understand it, I'll add some documentation. | 18:17 |
| _lore_ | sure, let me open the schema, one sec | 18:17 |
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| _lore_ | ok, do you have specific questions or do you want me to describe it? | 18:18 |
| blp | As a programmer, it's really easy to document the individual trees, and the branches on the trees, and the leaves on the branches, and forget about the forest. | 18:18 |
| blp | _lore_: Well, I understand BFD itself. | 18:18 |
| mmichelson | blp, https://bugzilla.redhat.com/show_bug.cgi?id=1847570 was where the feature was initially requested | 18:18 |
| openstack | bugzilla.redhat.com bug 1847570 in OVN "[RFE] Add support for BFD from OVN routers to other directly connected L3 devices" [Urgent,Modified] - Assigned to lorenzo.bianconi | 18:18 |
| blp | _lore_: I think my question is, what parts of a network is it used to monitor? And what happens when a connection fails? | 18:19 |
| mmichelson | That at least can give some background on where the feature came from. | 18:19 |
| blp | Ah, the bug report will help. | 18:19 |
| blp | I didn't even realize yet that it was connected to ecmp. | 18:19 |
| blp | Is it only for ecmp? | 18:20 |
| _lore_ | ovn bfd is used to check the state of the connection with an external enitity | 18:20 |
| _lore_ | like external router | 18:20 |
| _lore_ | blp: yes, it is used for ecmp at the moment | 18:20 |
| blp | OK, I understand better now. | 18:20 |
| _lore_ | but it can be link even to over features | 18:20 |
| _lore_ | sorry for that | 18:20 |
| blp | OK, I'll continue reading code and try to document a little. | 18:21 |
| mmichelson | Yeah we need to stop leaving documentation to the person trying to adapt the code :( | 18:21 |
| blp | My report is that I'm forward porting features to ddlog northd. I also pushed a few patches that improved tests, etc. | 18:21 |
| blp | and one bug report :-) | 18:21 |
| _lore_ | I can do it if you point me out which part to improve documentation (e.g. schema, northd code, ..) | 18:22 |
| _lore_ | just le me know | 18:22 |
| blp | _lore_: My first plan is to add a paragraph to the schema BFD table explaining the use case and how it fits in with everything else. | 18:22 |
| _lore_ | ok | 18:23 |
| blp | _lore_: There's also a couple of other references to bfd in ovn-nb.xml. I don't know whether they need updates. | 18:23 |
| _lore_ | ack | 18:23 |
| blp | _lore_: NB_Global has some BFD options. I don't know whether they apply to the new bfd as well, or just to the previous use of bfd. | 18:23 |
| _lore_ | blp: I think just to previous implementation | 18:24 |
| blp | _lore_: And there's a statement that "OVN uses BFD to monitor gateway connectivity" later on. I think this is a separate use of BFD, and it might be worth clarifying. | 18:24 |
| blp | Those are the bits I was planning to figure out and update, but if you want to do it that's even better! | 18:24 |
| _lore_ | yes, they are from the ovs bfd stuff | 18:24 |
| _lore_ | sure, I can look at them | 18:25 |
| blp | Thank you! | 18:25 |
| _lore_ | yw :) | 18:25 |
| blp | I am done with my report. Thanks everyone. | 18:25 |
| dceara | hi | 18:25 |
| dceara | blp: For the bug you reported, sorry about that, should be fixed now. | 18:25 |
| blp | Bugs happen! Thanks for fixing it. | 18:26 |
| mmichelson | OK, who'd like to go next? | 18:27 |
| numans | I could go. | 18:27 |
| numans | I have been working on adding mac learning support in OVN. | 18:28 |
| numans | Basically OVN will learn the macs seen from the ports whose port security is disabled and 'unknown | 18:28 |
| numans | address is set. | 18:28 |
| numans | so that ovn doesn't flood to all unknown ports once it has learnt. | 18:29 |
| numans | I'm almost done and I'll post the patches tomorrow. It would be great if they can be considered for the next release. | 18:29 |
| numans | Apart from that, I have been doing some code reviews. | 18:29 |
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| numans | That's it from me. | 18:29 |
| numans | blp, I had added some load balancer hairpin patches which would require northd-ddlog work. Have you addressed that gap ? | 18:30 |
| numans | blp, Actually I had volunteered that I | 18:30 |
| numans | I'll work on it. | 18:30 |
| numans | Let me know. I can work on them. | 18:31 |
| mmichelson | Cool. numans are you going to target 21.03 with the MAC learning patches? | 18:32 |
| numans | mmichelson, Yes. | 18:32 |
| mmichelson | Anyone else? | 18:33 |
| dceara | I have a one liner: I posted a v2 of the series to make the flow cache size in ovn-controller configurable. The series also fixes a couple of already existing bugs. | 18:34 |
| dceara | I'll try to submit another patch to further optimize the number of openflows for hairpin tomorrow before soft freeze but I'm not sure yet if I'll make it. | 18:35 |
| blp | numans: At least for now, I'm porting everything that's on master to ddlog. | 18:35 |
| dceara | That's it on my side (sorry turned out to be more than one line :) ) | 18:36 |
| _lore_ | blp: anyway for bfd most of the code is in ovn-controller | 18:36 |
| mmichelson | I also have a one-liner. I put up a patch last week to create a weekly test run against OVS master. I also put up a quick patch that removes the 2020 calendar from the release documentation and adds a 2022 calendar. | 18:36 |
| _lore_ | northd is almost db management | 18:36 |
| _lore_ | iirc :) | 18:36 |
| zhouhan | numans: I saw your patch for "Split logical flow and phsyical flow processing". I will review it next week (sorry for the delay) | 18:36 |
| numans | zhouhan, Sure. Thanks. | 18:37 |
| numans | I'll check if it requires a rebase and post v2 in case. | 18:37 |
| mmichelson | Does anyone else have an update? | 18:40 |
| mmichelson | All right, I guess that's all for this week. Bye everyone! | 18:41 |
| blp | Bye! | 18:41 |
| numans | Bye | 18:41 |
| dceara | Bye! | 18:41 |
| mmichelson | #endmeeting | 18:42 |
| openstack | Meeting ended Thu Feb 4 18:42:00 2021 UTC. Information about MeetBot at http://wiki.debian.org/MeetBot . (v 0.1.4) | 18:42 |
| openstack | Minutes: http://eavesdrop.openstack.org/meetings/ovn_community_development_meeting/2021/ovn_community_development_meeting.2021-02-04-18.16.html | 18:42 |
| openstack | Minutes (text): http://eavesdrop.openstack.org/meetings/ovn_community_development_meeting/2021/ovn_community_development_meeting.2021-02-04-18.16.txt | 18:42 |
| openstack | Log: http://eavesdrop.openstack.org/meetings/ovn_community_development_meeting/2021/ovn_community_development_meeting.2021-02-04-18.16.log.html | 18:42 |
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| zhouhan | bye | 18:42 |
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| _lore_ | bye | 18:44 |
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