Overhaul monitor mode handling:

o replace DLT_IEEE802_11 support in net80211 with DLT_IEEE802_11_RADIO
  and remove explicit bpf support from wireless drivers; drivers now
  use ieee80211_radiotap_attach to setup shared data structures that
  hold the radiotap header for each packet tx/rx
o remove rx timestamp from the rx path; it was used only by the tdma support
  for debugging and was mostly useless due to it being 32-bits and mostly
  unavailable
o track DLT_IEEE80211_RADIO bpf attachments and maintain per-vap and
  per-com state when there are active taps
o track the number of monitor mode vaps
o use bpf tap and monitor mode vap state to decide when to collect radiotap
  state and dispatch frames; drivers no longer explicitly directly check
  bpf state or use bpf calls to tap frames
o handle radiotap state updates on channel change in net80211; drivers
  should not do this (unless they bypass net80211 which is almost always
  a mistake)
o update various drivers to be more consistent/correct in handling radiotap
o update ral to include TSF in radiotap'd frames
o add promisc mode callback to wi

Reviewed by:	cbzimmer, rpaulo, thompsa

1 files changed, 4 insertions, 2 deletions

diff --git a/sys/net80211/ieee80211_scan.c b/sys/net80211/ieee80211_scan.c
index c1f4a13..b41ed59 100644
--- a/sys/net80211/ieee80211_scan.c
+++ b/sys/net80211/ieee80211_scan.c
@@ -920,6 +920,7 @@ scan_task(void *arg, int pending)
 		 * completed the channel change.
 		 */
 		ic->ic_set_channel(ic);
+		ieee80211_radiotap_chan_change(ic);
 
 		/*
 		 * Scan curchan.  Drivers for "intelligent hardware"
@@ -966,6 +967,7 @@ scan_task(void *arg, int pending)
 		ieee80211_setupcurchan(ic, ic->ic_bsschan);
 		IEEE80211_UNLOCK(ic);
 		ic->ic_set_channel(ic);
+		ieee80211_radiotap_chan_change(ic);
 		IEEE80211_LOCK(ic);
 	}
 	/* clear internal flags and any indication of a pick */
@@ -1095,7 +1097,7 @@ void
 ieee80211_add_scan(struct ieee80211vap *vap,
 	const struct ieee80211_scanparams *sp,
 	const struct ieee80211_frame *wh,
-	int subtype, int rssi, int noise, int rstamp)
+	int subtype, int rssi, int noise)
 {
 	struct ieee80211com *ic = vap->iv_ic;
 	struct ieee80211_scan_state *ss = ic->ic_scan;
@@ -1115,7 +1117,7 @@ ieee80211_add_scan(struct ieee80211vap *vap,
 		dump_probe_beacon(subtype, 1, wh->i_addr2, sp, rssi);
 #endif
 	if (ss->ss_ops != NULL &&
-	    ss->ss_ops->scan_add(ss, sp, wh, subtype, rssi, noise, rstamp)) {
+	    ss->ss_ops->scan_add(ss, sp, wh, subtype, rssi, noise)) {
 		/*
 		 * If we've reached the min dwell time terminate
 		 * the timer so we'll switch to the next channel.