Re: [dpdk-stable] [dpdk-dev] [PATCH] eal: fix detection of static or shared DPDK builds

[Thomas Monjalon <thomas@monjalon.net>]

09/02/2021 21:10, Pai G, Sunil:
> Hi Bruce,
> 
> Thanks for the fix.
> I do see the issue mentioned when using DPDK shared libs with OVS and this patch fixes it.
> 
> However, I saw the issue only for system installed DPDK but not for directory installed DPDK.
> 
>  
> > I saw this issue with OVS, where I was getting weird failures about ports not
> > being bound (in case of physical ports) or not being created (in case of virtio
> > ports), when using a shared build. Since it's potentially serious, I'd appreciate
> > if someone can reproduce the issue and verify the fix so we can consider it
> > for 21.02 inclusion.
> > 
> > To demonstrate this with regular DPDK, do a usual build of DPDK and then do
> > "ninja install" to install system-wide. Then build an example app, e.g.
> > l2fwd, using "make" from the examples/l2fwd directory. Running the
> > example normally, e.g. ./build/l2fwd -c F00, leads to no drivers being loaded
> > or ports being found. Adding "-d /path/to/drivers" e.g.
> > "/usr/local/lib/x86_64-linux-gnu/dpdk/pmds-21.1" on my system works as
> > expected. This shows the driver loading is not correct.
> > 
> > After applying this patch and re-running "ninja install", l2fwd should run the
> > same with and without the "-d" flag.
> > 
> > /Bruce
> 
> Tested-by: Sunil Pai G <sunil.pai.g@intel.com>

Applied, thanks