cfg80211/mac80211: allow registering for and sending action frames

This implements a new command to register for action frames
that userspace wants to handle instead of the in-kernel
rejection. It is then responsible for rejecting ones that
it decided not to handle. There is no unregistration, but
the socket can be closed for that.

Frames that are not registered for will not be forwarded
to userspace and will be rejected by the kernel, the
cfg80211 API helps implementing that.

Additionally, this patch adds a new command that allows
doing action frame transmission from userspace. It can be
used either to exchange action frames on the current
operational channel (e.g., with the AP with which we are
currently associated) or to exchange off-channel Public
Action frames with the remain-on-channel command.

Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index ded98730c111..56d5b9a6ec5b 100644
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -2,7 +2,7 @@
  * Copyright 2002-2005, Instant802 Networks, Inc.
  * Copyright 2005-2006, Devicescape Software, Inc.
  * Copyright 2006-2007  Jiri Benc <jbenc@suse.cz>
- * Copyright 2008-2009  Johannes Berg <johannes@sipsolutions.net>
+ * Copyright 2008-2010  Johannes Berg <johannes@sipsolutions.net>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -288,6 +288,11 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
                                         msecs_to_jiffies(10));
         }
 
+        if (info->flags & IEEE80211_TX_INTFL_NL80211_FRAME_TX)
+                cfg80211_action_tx_status(
+                        skb->dev, (unsigned long) skb, skb->data, skb->len,
+                        !!(info->flags & IEEE80211_TX_STAT_ACK), GFP_ATOMIC);
+
         /* this was a transmitted frame, but now we want to reuse it */
         skb_orphan(skb);