Hello Chris, Matthew, Thanks for raising that issue. Just to be clear and better understand, does the problem occur with the default config, i.e., without trying to compile any MLX driver in DPDK? Or does it only appear when setting DPDK_MLX5_PMD=y ? Thanks Best regards Mohammed > On 1 Oct 2020, at 22:33, Matthew Smith via lists.fd.io > <mgsmith=netgate....@lists.fd.io> wrote: > > Hi Chris, > > I did this in my local build: > > diff --git a/build/external/packages/dpdk.mk <http://dpdk.mk/> > b/build/external/packages/dpdk.mk <http://dpdk.mk/> > index 49761cd56..a30ffd2ac 100644 > --- a/build/external/packages/dpdk.mk <http://dpdk.mk/> > +++ b/build/external/packages/dpdk.mk <http://dpdk.mk/> > @@ -139,6 +139,7 @@ DPDK_MESON_ARGS = \ > -Dtests=false \ > "-Ddisable_drivers=$(DPDK_DRIVERS_DISABLED)" \ > "-Ddisable_libs=$(DPDK_LIBS_DISABLED)" \ > + -Dibverbs_link=dlopen \ > -Db_pie=true \ > -Dmachine=$(DPDK_MACHINE) \ > --buildtype=$(DPDK_BUILD_TYPE) > > If I try to submit it upstream, I would probably do something nicer using a > DPDK_<something> environment variable, but for the moment this got me past > that error. I have not actually tested with an mlx5 device yet, so I don't > know if something additional will be required in order to forward packets via > an mlx5 NIC, but it did fix the error you pasted and allow dpdk_plugin.so to > be loaded. > > -Matt > > > On Thu, Oct 1, 2020 at 2:10 PM Christian Hopps <cho...@chopps.org > <mailto:cho...@chopps.org>> wrote: > I've rebased my local branch on the latest master and dpdk is failing to load > now b/c > > 2020/10/01 18:31:54:514 err plugin/load > /home/chopps/w/vpp/build-root/install-vpp-native/vpp/lib/vpp_plugins/dpdk_plugin.so: > undefined symbol: ibv_fork_init > > I noticed that the dpdk build system has been changed is there something I > need to do to get it to link properly with the required libraries now? > > I did change "n" in > > DPDK_MLX5_PMD ?= n > DPDK_MLX5_COMMON_PMD ?= n > > to "y" to try and get MLX5 PMD to build. > > I also added > > vpp_uses_dpdk_mlx5_pmd = yes > > to build-data/platforms/vpp.mk <http://vpp.mk/> > > I also tried adding: > > vpp_uses_dpdk_ibverbs_link_dlopen = yes > > which didn't fix the problem. > > Any suggestions on how to fix this? > > Thanks, > Chris. > > > > >
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