[dpdk-stable] [PATCH] net/mlx5: fix host physical function representor naming

[Matan Azrad]

From: Viacheslav Ovsiienko
> Sent: Tuesday, June 23, 2020 10:49 AM
> To: dev at dpdk.org
> Cc: Matan Azrad <matan at mellanox.com>; Raslan Darawsheh
> <rasland at mellanox.com>; stable at dpdk.org
> Subject: [PATCH] net/mlx5: fix host physical function representor naming
> 
> The new kernel adds the names like "pf0" for Host PCI physical function
> representor on Bluefield SmartNIC hosts. This patch provides correct HPF
> representor recognition over the kernel versions 5.7 and laters.
> 
> The following port naming formats are supported:
> 
>   - missing physical port name (no sysfs/netlink key) at all,
>     master is assumed
> 
>   - decimal digits (for example "12"), representor is
>     assumed, the value is the index of attached VF
> 
>   - "p" followed by decimal digits, for example "p2", master
>     is assumed
> 
>   - "pf" followed by PF index, for example "pf0", Host PF
>      representor is assumed on SmartNIC systems.
> 
>   - "pf" followed by PF index concatenated with "vf" followed by
>      VF index, for example "pf0vf1", representor is assumed.
>      If index of VF is "-1" it is a special case of Host PF
>      representor, this representor must be indexed in devargs
>      as 65535, for example representor=[0-3,65535] will
>      allow representors for VF0, VF1, VF2, VF3 and for host PF.
> 
> Fixes: 79aa430721b1 ("common/mlx5: split common file under Linux
> directory")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Viacheslav Ovsiienko <viacheslavo at mellanox.com>
Acked-by: Matan Azrad <matan at mellanox.com>