[PATCH] net/mlx5: fix ignoring PF representor

[Raslan Darawsheh]

Hi,


On 11/03/2026 9:53 AM, Dariusz Sosnowski wrote:
> Whenever a new set of representors are probed by mlx5 driver
> on Multiport E-Switch setup using these device arguments:
> 
> 	0000:08:00.0,dv_flow_en=2,representor=(pf1)vf1
> 
> mlx5 driver should create 2 DPDK ports.
> One for 1st physical port (transfer proxy) and another for
> PF1VF1 representor. Parentheses are used in representor argument
> to indicate that physical port related to PF1VF1 should be ignored.
> 
> Offending patch has introduced a regression to ignore logic.
> Whenever mlx5 driver checked if related physical port should be probed
> and if representor_match_uplink() returned false (as it should),
> this result was ignored and probing continued.
> If requested VF/SF index matched PF index, physical port was probed.
> 
> This patch fixes that by adding explicit rejection of spawning physical
> ports for VF/SF representors if checked port is a physical port and
> driver have not already spawned it.
> 
> Fixes: f363bbe2c036 ("net/mlx5: fix probing to allow BlueField Socket Direct")
> 
> Signed-off-by: Dariusz Sosnowski <dsosnowski at nvidia.com>
> Acked-by: Bing Zhao <bingz at nvidia.com>

Patch squashed into relevant commit in next-net-mlx,

Kindest regards
Raslan Darawsheh