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cfg80211/mac80211: allow any interface to send channel switch notifications

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For multi-vif channel switches, we want to send
NL80211_CMD_CH_SWITCH_NOTIFY to the userspace to let it decide whether
other interfaces need to be moved as well.  This is needed when we
want a P2P GO interface to follow the channel of a station, for
example.

Modify the code so that all interfaces can send CSA notifications.
Additionally, send notifications for STA CSA as well.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Luciano Coelho
2014-11-07 14:31:37 +02:00
committed by Johannes Berg
parent 2f4572930d
commit d04b5ac9e7
3 changed files with 5 additions and 7 deletions
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4
include/uapi/linux/nl80211.h
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@@ -643,7 +643,9 @@
* @NL80211_CMD_CH_SWITCH_NOTIFY: An AP or GO may decide to switch channels
* independently of the userspace SME, send this event indicating
* %NL80211_ATTR_IFINDEX is now on %NL80211_ATTR_WIPHY_FREQ and the
* attributes determining channel width.
* attributes determining channel width. This indication may also be
* sent when a remotely-initiated switch (e.g., when a STA receives a CSA
* from the remote AP) is completed;
*
* @NL80211_CMD_CH_SWITCH_STARTED_NOTIFY: Notify that a channel switch
* has been started on an interface, regardless of the initiator