[PATCH 4/8] net/mlx5: add sysfs check for Multiport E-Switch

[Stephen Hemminger]

On Tue, 31 Oct 2023 16:27:29 +0200
Dariusz Sosnowski <dsosnowski at nvidia.com> wrote:

> +		MKSTR(sysfs_if_path, "/sys/class/net/%s", ifname);
> +		if (mlx5_get_pci_addr(sysfs_if_path, &if_pci_addr))
> +			continue;
> +		if (pci_addr->domain != if_pci_addr.domain ||
> +		    pci_addr->bus != if_pci_addr.bus ||
> +		    pci_addr->devid != if_pci_addr.devid ||
> +		    pci_addr->function != if_pci_addr.function)
> +			continue;
> +		MKSTR(sysfs_mpesw_path,
> +		      "/sys/class/net/%s/compat/devlink/lag_port_select_mode", ifname);

There are lots of DPDK code that reads sysfs, but eal and each driver ends up
coding there own way of handling this. Would be good to have common helpers in EAL.