Re: [dpdk-users] Enable MLX5 driver v20.11

[Raslan Darawsheh <rasland@nvidia.com>]

By the way, I've added to my example also the path to vdpa and regex driver which are not needed if you are using only net pmd.

Kindest regards,
Raslan Darawsheh

> -----Original Message-----
> From: users <users-bounces@dpdk.org> On Behalf Of Raslan Darawsheh
> Sent: Monday, December 14, 2020 10:27 AM
> To: Gerry Wan <gerryw@stanford.edu>
> Cc: users@dpdk.org
> Subject: Re: [dpdk-users] Enable MLX5 driver v20.11
> 
> So here is how we link against shared libs:
> 
> meson build-meson -D disable_drivers=net/mlx4  --default-library=shared
> && ninja -C build-meson
> and when you want to run an application like testpmd for example:
> 
> 
> ./dpdk-testpmd -n 4 -a 0000:08:00.0  -d $PATH_TO_BUILD/build-
> meson/drivers/librte_mempool_ring.so -d $PATH_TO_BUILD/build-
> meson/drivers/librte_net_mlx5.so -d $PATH_TO_BUILD/build-
> meson/drivers/librte_common_mlx5.so -d $PATH_TO_BUILD/build-
> meson/drivers/librte_regex_mlx5.so -d $PATH_TO_BUILD/build-
> meson/drivers/librte_vdpa_mlx5.so -- -i
> 
> Let me know if it works for you
> 
> Kindest regards,
> Raslan Darawsheh
> 
> From: Gerry Wan <gerryw@stanford.edu>
> Sent: Monday, December 14, 2020 7:33 AM
> To: Raslan Darawsheh <rasland@nvidia.com>
> Cc: users@dpdk.org
> Subject: Re: [dpdk-users] Enable MLX5 driver v20.11
> 
> I've found that linking with static libraries will fix this problem, but using
> shared libraries continues to successfully build but at runtime will not find any
> ports despite having devices bound to DPDK compatible drivers. Perhaps I
> am linking against library executables from the old DPDK version? If this is
> likely the case, how can I fix this to work with shared libraries?
> 
> On Sun, Dec 13, 2020 at 1:04 PM Gerry Wan
> <gerryw@stanford.edu<mailto:gerryw@stanford.edu>> wrote:
> OK, I was able to build it this way.
> However, it seems that it still does not solve my problem where the
> application detects no ports available. I am building it outside the
> development kit using Make. It appears the same issue happens with the
> provided sample applications. If I compile the "skeleton" sample application
> with make, running it will error saying no ports available. If I compile it using
> meson (meson configure -Dexamples=skeleton) and then run it through
> ./<build_dir>/examples/dpdk-skeleton it works fine. How can I compile the
> applications outside of the development kit? The current documentation
> says this should still be possible using make as before.
> 
> On Sun, Dec 13, 2020 at 3:31 AM Raslan Darawsheh
> <rasland@nvidia.com<mailto:rasland@nvidia.com>> wrote:
> Starting OFED 5.1 it stopped the support for MLX4 pmd
> And seems that you have some libmlx4 under your local lib dir,
> In the meanwhile what you can do when doing ninja is to disable mxl4
> compilation:
> 
> meson build -D disable_driver=net/mlx4; ninja -C build
> 
> Kindest regards,
> Raslan Darawsheh
> 
> From: Gerry Wan <gerryw@stanford.edu<mailto:gerryw@stanford.edu>>
> Sent: Sunday, December 13, 2020 1:25 PM
> To: Raslan Darawsheh <rasland@nvidia.com<mailto:rasland@nvidia.com>>
> Cc: users@dpdk.org<mailto:users@dpdk.org>
> Subject: Re: [dpdk-users] Enable MLX5 driver v20.11
> 
> Thanks,
> I updated my MLNX_OFED to 5.1-2.5.8.0, which was tested against for this
> DPDK release.
> To install, I ran ./mlnxofedinstall --dpdk --upstream-libs --with-mft --with-
> kernel-mft
> then /etc/init.d/openibd restart
> Now, ninja install gives me ../drivers/net/mlx4/mlx4_glue.h:16:10: fatal
> error: infiniband/mlx4dv.h: No such file or directory
> 
> What other steps am I missing?
> 
> On Sun, Dec 13, 2020 at 12:35 AM Raslan Darawsheh
> <rasland@nvidia.com<mailto:rasland@nvidia.com>> wrote:
> Hi Gerry,
> 
> Starting V20.11 the build system was switched to use meson only,
> And if you have necessary packages for MLX5 (a.k. rdma-core) it will be built
> automatically.
> 
> As for your question if you still don't need to bind mlx5 driver that's true, its
> still valid.
> 
> Kindest regards,
> Raslan Darawsheh
> 
> > -----Original Message-----
> > From: users <users-bounces@dpdk.org<mailto:users-
> bounces@dpdk.org>> On Behalf Of Gerry Wan
> > Sent: Sunday, December 13, 2020 1:22 AM
> > To: users@dpdk.org<mailto:users@dpdk.org>
> > Subject: [dpdk-users] Enable MLX5 driver v20.11
> >
> > Hello,
> > I am trying to update my DPDK version from 20.08 to 20.11. I am using the
> > mlx5 driver, and previously to enable it I had to set
> > CONFIG_RTE_LIBRTE_MLX5_PMD=y in config/common_base. In 20.11, I
> see
> > no
> > option to do so. I was able to build my application (and the sample
> > applications), but running rte_eth_dev_count_avail() returns 0 and cannot
> > find any ports.
> >
> > The steps I did to build DPDK from source were:
> >
> > $ meson build
> >
> > $ cd build
> >
> > $ sudo ninja install
> >
> > $ sudo ldconfig
> >
> >
> > Normally I would edit dpdk-20.xx/config/common_base before meson
> build,
> > but
> > that file is gone.
> >
> > What are the steps I need to take to enable mlx5 driver? I also recall that
> > I don't need to bind the mlx5 driver, is that still the case?
> >
> > Thanks