102 lines
4.1 KiB
Markdown
102 lines
4.1 KiB
Markdown
# Introduction
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This plugin is a *temporary!* copy of VPP's src/plugins/linux-cp/ plugin,
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originally by the following authors:
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* Signed-off-by: Neale Ranns <nranns@cisco.com>
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* Signed-off-by: Matthew Smith <mgsmith@netgate.com>
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* Signed-off-by: Jon Loeliger <jdl@netgate.com>
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* Signed-off-by: Pim van Pelt <pim@ipng.nl>
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* Signed-off-by: Neale Ranns <neale@graphiant.com>
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See previous work:
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* [interface mirroring](https://gerrit.fd.io/r/c/vpp/+/30759)
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* [netlink listener](https://gerrit.fd.io/r/c/vpp/+/31122)
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My work is intended to be re-submitted for review as a cleanup/rewrite of the
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existing Linux CP interface mirror and netlink syncer.
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Follow along on [my blog](https://ipng.ch/s/articles/) for my findings while
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I work towards a completed plugin that can copy VPP configuration into Linux
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interfaces, and copy Linux configuration changes into VPP (ie. a fully
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bidirectional pipe between Linux and VPP).
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When the code is complete, this plugin should be able to work seemlessly with
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a higher level controlplane like [FRR](https://frrouting.org/) or
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[Bird](https://bird.network.cz/), for example as a BGP/OSPF speaking ISP router.
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## WARNING!!
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The only reason that this code is here, is so that I can make some progress
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iterating on the Linux CP plugin, and share my findings with some interested
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folks. The goal is NOT to use this plugin anywhere other than a bench. I
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intend to contribute the plugin back upstream as soon as it's peer reviewed!
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***Pull Requests and Issues will be immediately closed without warning***
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VPP's code lives at [fd.io](https://gerrit.fd.io/r/c/vpp), and this copy is
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shared only for convenience purposes.
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## Building
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First, ensure that you can build and run 'vanilla' VPP by using the
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[instructions](https://wiki.fd.io/view/VPP/Pulling,_Building,_Running,_Hacking_and_Pushing_VPP_Code).
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Then check out this plugin out-of-tree and symlink it in.
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```
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mkdir ~/src
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cd ~/src
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git clone https://github.com/pimvanpelt/lcpng.git
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ln -s ~/src/vpp/src/plugins/lcpng ~src/lcpng
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```
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## Running
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Ensure this plugin is enabled and the original `linux-cp` plugin is disabled,
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that logging goes to stderr (in the debug variant of VPP), and that the features
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are dis/enabled, by providing the following `startup.conf`:
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```
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plugins {
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path ~/src/vpp/build-root/install-vpp_debug-native/vpp/lib/vpp_plugins
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plugin lcpng_if_plugin.so { enable }
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plugin linux_cp_plugin.so { disable }
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}
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logging {
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default-log-level info
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default-syslog-log-level crit
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## Set per-class configuration
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class linux-cp/if { rate-limit 10000 level debug syslog-level debug }
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}
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lcpng {
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default netns dataplane
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lcp-sync
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lcp-auto-subint
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}
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```
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Then, simply `make build` and `make run` VPP which will load the plugin.
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```
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im@hippo:~/src/vpp$ make run
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snort [debug ]: initialized
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snort [debug ]: snort listener /run/vpp/snort.sock
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linux-cp/if [debug ]: interface_add: [1] sw TenGigabitEthernet3/0/0 is_sub 0 lcp-auto-subint 1
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linux-cp/if [debug ]: mtu_change: sw TenGigabitEthernet3/0/0 0
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linux-cp/if [debug ]: interface_add: [2] sw TenGigabitEthernet3/0/1 is_sub 0 lcp-auto-subint 1
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linux-cp/if [debug ]: mtu_change: sw TenGigabitEthernet3/0/1 0
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linux-cp/if [debug ]: interface_add: [3] sw TenGigabitEthernet3/0/2 is_sub 0 lcp-auto-subint 1
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linux-cp/if [debug ]: mtu_change: sw TenGigabitEthernet3/0/2 0
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linux-cp/if [debug ]: interface_add: [4] sw TenGigabitEthernet3/0/3 is_sub 0 lcp-auto-subint 1
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linux-cp/if [debug ]: mtu_change: sw TenGigabitEthernet3/0/3 0
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linux-cp/if [debug ]: interface_add: [5] sw TwentyFiveGigabitEthernete/0/0 is_sub 0 lcp-auto-subint 1
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linux-cp/if [debug ]: mtu_change: sw TwentyFiveGigabitEthernete/0/0 0
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linux-cp/if [debug ]: interface_add: [6] sw TwentyFiveGigabitEthernete/0/1 is_sub 0 lcp-auto-subint 1
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linux-cp/if [debug ]: mtu_change: sw TwentyFiveGigabitEthernete/0/1 0
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_______ _ _ _____ ___
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__/ __/ _ \ (_)__ | | / / _ \/ _ \
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_/ _// // / / / _ \ | |/ / ___/ ___/
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/_/ /____(_)_/\___/ |___/_/ /_/
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DBGvpp#
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```
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