[PATCH] mac80211: show transmitted frames on monitor interfaces

This patch makes mac80211 show transmitted frames on monitor interfaces,
including radiotap headers that indicate some transmission parameters.
The shown parameters will need to be expanded, but this should work as
a basis to work from.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Jiri Benc <jbenc@suse.cz>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index af4d14d..5a91e17 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -392,6 +392,7 @@
 	int monitors;
 	struct iw_statistics wstats;
 	u8 wstats_flags;
+	int tx_headroom; /* required headroom for hardware/radiotap */
 
 	enum {
 		IEEE80211_DEV_UNINITIALIZED = 0,