Re: [dpdk-users] Building mlx4 drivers

[Shahaf Shuler <shahafs@mellanox.com>]

Hi Mike 

November 7, 2017 10:50 PM, Michael Sowka:
> 
> Hello, I am experiencing some early difficulties in building the mlx4 driver for
> a ConnectX-3 device.
> 
> Following the documentation at
> https://emea01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fdpd
> k.org%2Fdoc%2Fguides%2Fnics%2Fmlx4.html&data=02%7C01%7Cshahafs%4
> 0mellanox.com%7Ccdee63ffb7524200bd2608d526211428%7Ca652971c7d2e4
> d9ba6a4d149256f461b%7C0%7C0%7C636456845870494743&sdata=qkTlfolUR
> O583sGeycJbrbOHDNETVRlmPNNc2MPihh4%3D&reserved=0, I have
> installed the MLNX_OFED bundle, enabled the
> CONFIG_RTE_LIBRTE_MLX4_PMD=y build option, but fail to build the driver
> with:
> drivers/net/mlx4/mlx4_rxtx.h:44:31: fatal error: infiniband/mlx4dv.h: No
> such file or directory
> 
> I'm on an Ubuntu 16.04 system.
> 
> Sure enough, neither the MLNX_OFED versions 4.1 or 4.2 include the
> mlx4dv.h header. I first tried 4.1 as that's what's recommended in the above
> mlx4 guide, but its other section
> (CONFIG_RTE_LIBRTE_MLX4_DEBUG_BROKEN_VERBS
> option) alludes to possiblity of using 4.2.
> 
> Again, i'm sticking with docs to not install anything outside of what
> MLNX_OFED provides in its packages, but where is that pesky mlx4dv.h
> header?

How did you install the OFED?
In order to install the rdma-core libs of OFED (which includes the mlx4dv.h) you should use the following command:
./mlnxofedinstall --dpdk --upstream-libs

I guess mlx4 guide is not yet updated for this release. The update for this release should include the new OFED and the command line to install it.

> 
> Thanks,
> Mike