Hi Mohammed, I think it will only affect builds where DPDK_MLX5_PMD=y is set, but I cannot say for sure. The scripts/configurations I build with always set that flag, so I have not tried to generate a build without it set recently.
-Matt On Fri, Oct 2, 2020 at 12:57 AM Mohammed HAWARI <momohaw...@gmail.com> wrote: > 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 b/build/external/packages/ > dpdk.mk > index 49761cd56..a30ffd2ac 100644 > --- a/build/external/packages/dpdk.mk > +++ b/build/external/packages/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> 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 >> >> 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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