From af6f0d422c521374ee6a2dd92df5935a5a476ae5 Mon Sep 17 00:00:00 2001 From: Tom Gundersen Date: Sat, 26 Oct 2013 00:34:01 +0200 Subject: udev: add network link configuration tool This tool applies hardware specific settings to network devices before they are announced via libudev. Settings that will probably eventually be supported are MTU, Speed, DuplexMode, WakeOnLan, MACAddress, MACAddressPolicy (e.g., 'hardware', 'synthetic' or 'random'), Name and NamePolicy (replacing our current interface naming logic). This patch only introduces support for Description, as a proof of concept. Some of these settings may later be overriden by a network management daemon/script. However, these tools should always listen and wait on libudev before touching a device (listening on netlink is not enough). This is no different from how things used to be, as we always supported changing the network interface name from udev rules, which does not work if someone has already started using it. The tool is configured by .link files in /etc/net/links/ (with the usual overriding logic in /run and /lib). The first (in lexicographical order) matching .link file is applied to a given device, and all others are ignored. The .link files contain a [Match] section with (currently) the keys MACAddress, Driver, Type (see DEVTYPE in udevadm info) and Path (this matches on the stable device path as exposed as ID_PATH, and not the unstable DEVPATH). A .link file matches a given device if all of the specified keys do. Currently the keys are treated as plain strings, but some limited globbing may later be added to the keys where it makes sense. Example: /etc/net/links/50-wireless.link [Match] MACAddress=98:f2:e4:42:c6:92 Path=pci-0000:02:00.0-bcma-0 Type=wlan [Link] Description=The wireless link --- TODO | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'TODO') diff --git a/TODO b/TODO index cbb2cbe9bf..a3ea2f3fe8 100644 --- a/TODO +++ b/TODO @@ -714,6 +714,14 @@ Features: * systemd-run is missing zsh completion scripts +* udev-link-config: + - Make sure ID_PATH is always exported and complete for + network devices where possible, so we can safely rely + on Path= matching + - NamePolicy= replace the current naming rules + - MACPolicy= support 'firmware', 'synthetic' and 'random' + - Check if Driver= is broken, or just my driver (bcma) + External: * dbus: -- cgit v1.2.3-54-g00ecf