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Bug 2120473 - [RFE] Support MPTCP
Summary: [RFE] Support MPTCP
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 9
Classification: Red Hat
Component: nmstate
Version: 9.1
Hardware: x86_64
OS: Linux
medium
medium
Target Milestone: rc
: 9.2
Assignee: Gris Ge
QA Contact: Mingyu Shi
Marc Muehlfeld
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2022-08-23 03:25 UTC by Gris Ge
Modified: 2023-12-27 05:52 UTC (History)
6 users (show)

Fixed In Version:
Doc Type: Enhancement
Doc Text:
.The `nmstate` API now supports MPTCP flags This update enhances the `nmstate` API with support for MultiPath TCP (MPTCP) flags. As a result, you can use `nmstate` to set MPTCP address flags on interfaces with static or dynamic IP addresses.
Clone Of:
Environment:
Last Closed: 2023-05-09 07:31:48 UTC
Type: Bug
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Github nmstate nmstate pull 2014 0 None open Add MPTCP initial support 2022-08-23 03:27:12 UTC
Red Hat Issue Tracker NMT-151 0 None None None 2023-01-23 18:13:24 UTC
Red Hat Issue Tracker RHELPLAN-131898 0 None None None 2022-08-23 03:28:20 UTC
Red Hat Product Errata RHBA-2023:2190 0 None None None 2023-05-09 07:32:03 UTC

Description Gris Ge 2022-08-23 03:25:48 UTC 
Description of problem:


Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1.
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Actual results:


Expected results:


Additional info:
Comment 2 Gris Ge 2022-08-23 03:27:12 UTC 
Patch posted to upstream: https://github.com/nmstate/nmstate/pull/2014

Support configure interface level MPTCP flags:

```yml
---
interfaces:
  - name: eth1
    type: ethernet
    state: up
    mptcp:
      address-flags:
      - subflow
      - backup
      - fullmesh
```

When querying, also include MPTCP flags per IP address:

```yml
address:
  - ip: 192.0.2.2
    prefix-length: 24
    mptcp-flags:
      - signal
      - subflow
```

For interface level MPTCP flags, will apply flags to all valid IP
addresses(both static and dynamic). Plugin might has their own rule on
excusing special scope of IP address, e.g. IPv6 multicast address.

Limitations:
 * Per IP address MPTCP flags is ignored with an warning message when
   different from interface level MPTCP flags.
 * Cannot set `signal` along with `fullmesh` due to kernel restriction.
 * If sysctl has `net.mptcp.enabled` set to 0, NetworkManager cannot
   apply MPTCP flags. User will get an failure suggest them to use
   third-party tools.
Comment 14 errata-xmlrpc 2023-05-09 07:31:48 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (nmstate bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2023:2190
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