[dpdk-dev] [dpdk-users] DPDK 16.04 link changes cause PMD drivers to not be loaded

Thomas Monjalon thomas.monjalon at 6wind.com
Thu Apr 21 17:18:16 CEST 2016


2016-04-21 08:01, Aurojit Panda:
> Panu Matilainen wrote:
[...]
> > Again, PMDs are *plugins* that are *meant* to be loaded at runtime.
> > That allows for all sorts of flexibility especially
> > for packaging and shipping, at some extra cost in setup complexity.
> 
> I am all for a plugin architecture, I was merely suggesting that you
> embed some path infromation at the beginning. Also please note:
> (a) This behavior changed recently.

What changed recently?

> (b) This change is entirely undocumented, which is why I was reporting
> it in the first place.
> (c) It is actually quite unintutive, because previously ensuring
> LD_LIBRARY_PATH was correct was all that was required 
> to get any DPDK application to interact with ports.

?
Are you talking about combined library?

> > For your own purposes, you can of course tweak the linking settings
> > as much as you like. Look for "plugins" in mk/rte.app.mk and change
> > the shared lib condition on the line above to "y" and there you have it.
> > But that's not the way plugins are meant to be used.
> 
> That is not a reasonable solution given that it makes it very hard to
> track future changes to DPDK without merges.
> My alternatives neither break people's abilities to use plugins,
> nor do they impact behavior.

Please do not hesitate to send some patch to show your solution.
Thanks


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