[RFC v2 0/3] Improve wireless netdev detection

[Denis Kenzior <denkenz@gmail.com>]

The current mechanism to detect hot-plug / unplug of wireless devices is
somewhat arcane.  One has to listen to NEW_WIPHY/DEL_WIPHY events over
nl80211 as well as RTM_NEWLINK / RTM_DELLINK events over rtnl, then
somehow find a correlation between these events.  This involves userspace
sending GET_INTERFACE or GET_WIPHY commands to the kernel, which incurs
additional roundtrips.

This patch series proposes that NEW_INTERFACE and DEL_INTERFACE events are
always emitted, regardless of whether a netdev was added/removed by the
driver or explicitly via NEW_INTERFACE/DEL_INTERFACE commands.

v2: Squished patches 2+3, 4+5.  DEL_INTERFACE event notification is now
sent inside cfg80211_unregister_wdev instead of nl80211_del_interface.

Denis Kenzior (3):
  nl80211: Add nl80211_notify_iface
  core: Always notify of new wireless netdevs
  core: Always notify when wireless netdev is removed

 net/wireless/core.c    |  6 +++++
 net/wireless/nl80211.c | 69 +++++++++++++++++++++++++++-----------------------
 net/wireless/nl80211.h |  3 +++
 3 files changed, 47 insertions(+), 31 deletions(-)

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2.7.3