[dpdk-dev] [PATCH v3 0/3] Mellanox ConnectX-3 PMD

[Adrien Mazarguil]

On Thu, Feb 26, 2015 at 03:49:07PM +0200, Gleb Natapov wrote:
> On Thu, Feb 26, 2015 at 02:36:27PM +0100, Thomas Monjalon wrote:
> > 2015-02-26 13:51, Gleb Natapov:
> > > Did git pull today. After enabling mlnx pmd compilation fails with:
> > > 
> > > dpdk/lib/librte_pmd_mlx4/mlx4.c: In function ‘mlx4_pci_devinit’:
> > > dpdk/lib/librte_pmd_mlx4/mlx4.c:4636:14: error: too few arguments to function ‘rte_eth_dev_allocate’
> > >     eth_dev = rte_eth_dev_allocate(name);
> > 
> > Yes, thanks for reporting.
> > I didn't test the disabled mlx4 after hotplug integration:
> > 	dpdk.org/browse/dpdk/commit/?id=9f1653e7b7e1746e7c
> > 
> > Clearly, I have to improve my sanity checks.
> > Sorry for the inconvenience.
> No problem, I fixed that locally, but now I see another issue. I have
> several PMDs statically compiled in with my application and I expect
> dpdk to choose correct one depending on available HW, but mlnx pmd does
> not behave nicely, if its initialization fails it kills entire
> application:
> 
> EAL: PCI device 0000:03:00.0 on NUMA socket 0
> EAL:   probe driver: 15b3:1003 librte_pmd_mlx4
> EAL: Error - exiting with code: 1
>   Cause: Requested device 0000:03:00.0 cannot be used

About this error, make sure you are using the kernel modules provided by the
mlnx-ofed-kernel package from MOFED [1] as described in the documentation.

In short, unload mlx4_core, mlx4_en, mlx4_ib and ib_uverbs, install this
package, run depmod and load them again. Since they have similar names, the
updated kernel modules should be found in a "extra" or "updates"
subdirectory of /lib/modules and come first when queried by modinfo.

[1] http://www.mellanox.com/page/products_dyn?product_family=26&mtag=linux_sw_drivers

-- 
Adrien Mazarguil
6WIND