From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Herrmann Subject: [PATCH 0/4] Provide netdev naming-policy via sysfs Date: Thu, 27 Feb 2014 15:47:10 +0100 Message-ID: <1393512434-1325-1-git-send-email-dh.herrmann@gmail.com> Cc: "David S. Miller" , Kay Sievers , Tom Gundersen , Johannes berg , linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, David Herrmann To: netdev@vger.kernel.org Return-path: Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Hi 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. 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 | 6 ++++++ net/core/dev.c | 7 +++++++ net/core/net-sysfs.c | 2 ++ net/core/rtnetlink.c | 2 ++ net/mac80211/iface.c | 1 + 9 files changed, 26 insertions(+), 3 deletions(-) -- 1.9.0