[dpdk-users] Building mlx5 with rdma-core/OFED

[Gerry Wan]

I recently tried to reinstall MLX OFED 5.2-2.2.0.0 on my bare metal machine
Ubuntu 20.04 (previously using the command ./mlnxofedinstall --dpdk
--upstream-libs --with-mft --with-kernel-mft). However, it now fails with
the message

Checking SW Requirements...
Removing old packages...
Uninstalling the previous version of MLNX_OFED_LINUX
Installing new packages Installing mft-4.16.1...
Installing ofed-scripts-5.2...
Installing mstflint-4.15.0...
Installing mlnx-ofed-kernel-utils-5.2...
Installing mlnx-ofed-kernel-dkms-5.2...
Failed to install mlnx-ofed-kernel-dkms DEB
Collecting debug info...
See /tmp/MLNX_OFED_LINUX.9221.logs/mlnx-ofed-kernel-dkms.debinstall.log

It appears that my kernel version got upgraded to 5.4.0-80-generic which I
think may be the issue. I've also tried to install using
 --add-kernel-support --kernel 5.4.0-80-generic, with no luck.

The DPDK website says that rdma-core is now recommended over OFED, but the
documentation for how to use it isn't very clear to me. I've tried to
install it via

apt-get install rdma-core

as well as running the quick start script listed here:
https://github.com/linux-rdma/rdma-core, but DPDK installation still fails
with

../drivers/common/mlx5/linux/mlx5_glue.h:15:10: fatal error:
infiniband/mlx5dv.h: No such file or directory
   15 | #include <infiniband/mlx5dv.h>

Any advice on getting the mlx5 drivers to work again would be helpful!