Thanks Luke.
The show vlib graph and show features were enough to get me started...
The main downside I found is that the show graph only shows the currently
existing dynamic graph topology, while some graph nodes/arcs are only added
when specific features are enabled. This however is rooted in the highly
modular design, and would not be any different with your tool.
I have yet to find a top-down method to understand the supported feature paths
and the mapping to node graphs. I am currently fiddling through the clis (using
the show help and the correlating API documentation to decipher the
capabilities), trying to enable various features/functionality, generating the
packet trace, and following the code through there.
Perhaps I should be looking at this first from the features list and not
through the graph nodes (which are more implementation details)? How would be
the best way to go about understanding each supported feature and how to
control it via the clis/apis? I'm basically looking for the "user manual"
Regards,
Eyal
From: Luke, Chris [mailto:chris_l...@comcast.com]
Sent: Wednesday, August 16, 2017 23:59
To: Eyal Lavee <ela...@mellanox.com>; vpp-dev@lists.fd.io
Subject: RE: vpp graph dump
Eyal,
I didn't release that code because it was embedded into VPP and fragile; I had
intended to rewrite it to make use of the API and never got round to it.
As Ole mentioned the API should now have all the required data; if you can wait
until I return from vacation (read: remind me in September so I don't forget) I
may have a stab at a small standalone utility using the API to generate the
.dot and ultimately the .svg as I did before. There were many suggestions for
adding things like runtime statistics to the edges etc which are still on the
wishlist.
But if it's just the packet path, again as Ole mentions, "show vlib graph" is
>90% of what you likely need.
Chris.
From: vpp-dev-boun...@lists.fd.io<mailto:vpp-dev-boun...@lists.fd.io>
[mailto:vpp-dev-boun...@lists.fd.io] On Behalf Of Eyal Lavee
Sent: Tuesday, August 15, 2017 8:23
To: vpp-dev@lists.fd.io<mailto:vpp-dev@lists.fd.io>
Subject: [vpp-dev] vpp graph dump
Is there any method to dump the vpp node graph?
I'm looking to understand the supported feature path(s) without needing to
reverse engineer from the code.
I have seen a previous post from mid 2016 entitled "[vpp-dev] Node graph
visualization" on such a potential utility, but there do not seem to be any
follow-ups to this.
Regards,
Eyal.
___
vpp-dev mailing list
vpp-dev@lists.fd.io
https://lists.fd.io/mailman/listinfo/vpp-dev
