From: Rasmus Villemoes Date: Wed, 16 Nov 2022 10:52:03 +0000 (+0100) Subject: net: dsa: use NET_NAME_PREDICTABLE for user ports with name given in DT X-Git-Tag: Ubuntu-6.2.0-16.16~1305^2~194^2~1 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=6fdb038420407d9781b2ba2429f836434a25e91a;p=mirror_ubuntu-kernels.git net: dsa: use NET_NAME_PREDICTABLE for user ports with name given in DT When a user port has a label in device tree, the corresponding netdevice is, to quote include/uapi/linux/netdevice.h, "predictably named by the kernel". This is also explicitly one of the intended use cases for NET_NAME_PREDICTABLE, quoting 685343fc3ba6 ("net: add name_assign_type netdev attribute"): NET_NAME_PREDICTABLE: The ifname has been assigned by the kernel in a predictable way [...] Examples include [...] and names deduced from hardware properties (including being given explicitly by the firmware). Expose that information properly for the benefit of userspace tools that make decisions based on the name_assign_type attribute, e.g. a systemd-udev rule with "kernel" in NamePolicy. Signed-off-by: Rasmus Villemoes Reviewed-by: Andrew Lunn Reviewed-by: Florian Fainelli Signed-off-by: Jakub Kicinski --- diff --git a/net/dsa/slave.c b/net/dsa/slave.c index 2ae75d4d8389..5405b730eb92 100644 --- a/net/dsa/slave.c +++ b/net/dsa/slave.c @@ -2377,7 +2377,7 @@ int dsa_slave_create(struct dsa_port *port) if (port->name) { name = port->name; - assign_type = NET_NAME_UNKNOWN; + assign_type = NET_NAME_PREDICTABLE; } else { name = "eth%d"; assign_type = NET_NAME_UNKNOWN;