Hi Dave Any comments on this? Thanks David On Mon, Mar 17, 2014 at 8:42 PM, David Herrmann <dh.herrmann@xxxxxxxxx> wrote: > Hi > > This is v4 of the netdev naming-policy series. You can find v1 here: > http://thread.gmane.org/gmane.linux.kernel/1657015 > Changes since v1: > - fix mac80211 core to set NET_NAME_ENUM for wlan%d kernel-provided names > - acked-by udev developers > - avoid padding after name_assign_type in "struct net_device" (David Laight) > - move API constants to uapi header (Ben Hutchings) > > > This series implements a new sysfs attribute for netdevs called > "name_assign_type". It provides an integer that describes where an interface > name comes from. See Patch #1 for a description of this attribute. It is > modelled after the existing "addr_assign_type" attribute. > > The main use-case is to allow udev to skip applying reliable ifnames to virtual > devices. For instance, if wifi-P2P devices are created, wpas already provides a > suitable naming-policy and udev shouldn't touch these devices. Same is true for > other virtual devices. > The idea is that if a device-name was provided by user-space, we should always > prefer fixing this naming-policy instead of making udev rename the device. For > kernel provided names that's hardly possible, though. Providing the > naming-policy source via sysfs is thus a simple way to see whether renames are > needed. > > Additionally, this field allows to detect whether a netdev has been manually > renamed, which is quite useful for debugging and during crash-recovery. > Furthermore, it fixes real udev bugs if a netdev is already renamed in the > initrd and udev only runs in the real root. Detecting renames avoids overwriting > custom user provided names. > > Thanks > David > > David Herrmann (4): > net: add name_assign_type netdev attribute > mac80211: set NET_NAME_USER for user-space created ifs > ath6kl: set NET_NAME_USER for P2P ifs > brcmfmac: set NET_NAME_USER for P2P ifs > > drivers/net/wireless/ath/ath6kl/cfg80211.c | 5 ++++- > drivers/net/wireless/ath/ath6kl/cfg80211.h | 1 + > drivers/net/wireless/ath/ath6kl/core.c | 4 ++-- > drivers/net/wireless/brcm80211/brcmfmac/p2p.c | 1 + > include/linux/netdevice.h | 2 ++ > include/uapi/linux/netdevice.h | 4 ++++ > net/core/dev.c | 7 +++++++ > net/core/net-sysfs.c | 2 ++ > net/core/rtnetlink.c | 2 ++ > net/mac80211/cfg.c | 2 +- > net/mac80211/ieee80211_i.h | 1 + > net/mac80211/iface.c | 2 ++ > net/mac80211/main.c | 2 +- > 13 files changed, 30 insertions(+), 5 deletions(-) > > -- > 1.9.0 > -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
