net/mlx5: probe LAG representor with PF1 PCI address

  In case of bonding, orchestrator wants to use same devargs for LAG and
non-LAG scenario, to probe representor on PF1 using PF1 PCI address
like "<DBDF_PF1>,representor=pf1vf[0-3]".

This patch changes PCI address check policy to allow PF1 PCI address for
representors on PF1.

Note: detaching PF0 device can't remove representors on PF1. It's
recommended to use primary(PF0) PCI address to probe representors on
both PFs.

Signed-off-by: Xueming Li <xuemingl@nvidia.com>
---
 drivers/net/mlx5/linux/mlx5_os.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)
  

Hi, Xuemig

This patch looks like a fix - could you, please add the "Fixes:" tag and modify the headline?

With best regards,
Slava

> -----Original Message-----
> From: Xueming Li <xuemingl@nvidia.com>
> Sent: Thursday, April 22, 2021 10:25
> Cc: dev@dpdk.org; Xueming(Steven) Li <xuemingl@nvidia.com>; Matan
> Azrad <matan@nvidia.com>; Shahaf Shuler <shahafs@nvidia.com>; Slava
> Ovsiienko <viacheslavo@nvidia.com>
> Subject: [PATCH] net/mlx5: probe LAG representor with PF1 PCI address
> 
> In case of bonding, orchestrator wants to use same devargs for LAG and non-
> LAG scenario, to probe representor on PF1 using PF1 PCI address like
> "<DBDF_PF1>,representor=pf1vf[0-3]".
> 
> This patch changes PCI address check policy to allow PF1 PCI address for
> representors on PF1.
> 
> Note: detaching PF0 device can't remove representors on PF1. It's
> recommended to use primary(PF0) PCI address to probe representors on
> both PFs.
> 
> Signed-off-by: Xueming Li <xuemingl@nvidia.com>
> ---
>  drivers/net/mlx5/linux/mlx5_os.c | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/net/mlx5/linux/mlx5_os.c
> b/drivers/net/mlx5/linux/mlx5_os.c
> index 76c72d0e38..22271e289a 100644
> --- a/drivers/net/mlx5/linux/mlx5_os.c
> +++ b/drivers/net/mlx5/linux/mlx5_os.c
> @@ -1875,11 +1875,14 @@ mlx5_device_bond_pci_match(const struct
> ibv_device *ibv_dev,
>  				tmp_str);
>  			break;
>  		}
> -		/* Match PCI address. */
> +		/* Match PCI address, allows BDF0+pfx or BDFx+pfx. */
>  		if (pci_dev->domain == pci_addr.domain &&
>  		    pci_dev->bus == pci_addr.bus &&
>  		    pci_dev->devid == pci_addr.devid &&
> -		    pci_dev->function + owner == pci_addr.function)
> +		    ((pci_dev->function == 0 &&
> +		      pci_dev->function + owner == pci_addr.function) ||
> +		     (pci_dev->function == owner &&
> +		      pci_addr.function == owner)))
>  			pf = info.port_name;
>  		/* Get ifindex. */
>  		snprintf(tmp_str, sizeof(tmp_str),
> --
> 2.25.1