[dpdk-users] Problem compiling mlx5 (ConnectX4 100Gbps) - Linux kernel 4.8

[Georgios Katsikas]

Hi,

Over summer I installed a single port Mellanox ConnectX 4 100GbE NIC on my
server.
My Linux kernel was 4.4 (compiled from sources) and I managed to manually
install the mlx5 network driver, the Mellanox firmware (mft) to switch from
Infiniband to Ethernet, and finally build and run DPDK 16.07 (by
setting CONFIG_RTE_LIBRTE_MLX5_PMD=y).

Since more recent Linux kernels have the correct mlx5 driver built in, I
decided to switch to kernel 4.8. Indeed my NIC works fine on top of the
Linux-based driver.
However, when I try to build DPDK (16.11)
with CONFIG_RTE_LIBRTE_MLX5_PMD=y, I get the following error:

== Build drivers/net/mlx5
  CC mlx5.o
In file included from /opt/dpdk/drivers/net/mlx5/mlx5.h:67:0,
                 from /opt/dpdk/drivers/net/mlx5/mlx5.c:66:
/opt/dpdk/drivers/net/mlx5/mlx5_rxtx.h:46:32: fatal error:
infiniband/mlx5_hw.h: No such file or directory
compilation terminated.
/opt/dpdk/mk/internal/rte.compile-pre.mk:138: recipe for target 'mlx5.o'
failed
make[6]: *** [mlx5.o] Error 1
/opt/dpdk/mk/rte.subdir.mk:61: recipe for target 'mlx5' failed
make[5]: *** [mlx5] Error 2
/opt/dpdk/mk/rte.subdir.mk:61: recipe for target 'net' failed
make[4]: *** [net] Error 2
/opt/dpdk/mk/rte.sdkbuild.mk:78: recipe for target 'drivers' failed
make[3]: *** [drivers] Error 2
/opt/dpdk/mk/rte.sdkroot.mk:126: recipe for target 'all' failed
make[2]: *** [all] Error 2
/opt/dpdk/mk/rte.sdkinstall.mk:85: recipe for target 'pre_install' failed
make[1]: *** [pre_install] Error 2
/opt/dpdk/mk/rte.sdkroot.mk:101: recipe for target 'install' failed
make: *** [install] Error 2

Is there any change in the latest Linux kernel that is not yet reflected in
DPDK?
I have installed libmlx5* and all the other dependencies as I did a few
months ago but for some reason, the driver's files have been modified by
Linux.

Thanks in advance and best regards,
-- 
   Georgios Katsikas
   Ph.D. Student and Research Assistant
   Network Systems Lab (NSL)



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