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, 3 insertions, 5 deletions

diff --git a/sys/net80211/ieee80211_monitor.c b/sys/net80211/ieee80211_monitor.c
index b1e98eb..119c87d 100644
--- a/sys/net80211/ieee80211_monitor.c
+++ b/sys/net80211/ieee80211_monitor.c
@@ -60,7 +60,7 @@ __FBSDID("$FreeBSD$");
 static void monitor_vattach(struct ieee80211vap *);
 static int monitor_newstate(struct ieee80211vap *, enum ieee80211_state, int);
 static int monitor_input(struct ieee80211_node *ni, struct mbuf *m,
-	int rssi, int noise, uint32_t rstamp);
+	int rssi, int nf);
 
 void
 ieee80211_monitor_attach(struct ieee80211com *ic)
@@ -124,13 +124,11 @@ monitor_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
  * Process a received frame in monitor mode.
  */
 static int
-monitor_input(struct ieee80211_node *ni, struct mbuf *m,
-	int rssi, int noise, uint32_t rstamp)
+monitor_input(struct ieee80211_node *ni, struct mbuf *m, int rssi, int nf)
 {
 	struct ieee80211vap *vap = ni->ni_vap;
 
-	if (bpf_peers_present(vap->iv_rawbpf))
-		bpf_mtap(vap->iv_rawbpf, m);
+	ieee80211_radiotap_rx(vap, m);
 	m_freem(m);
 	return -1;
 }