Add initial support for 900MHz cards like the Ubiquiti SR9:

o add channel flag to enable freq <-> ieee channel # mapping (can
  go away in the future when ieee number is precomputed)
o add mapping between 900mhz freq's and channel #'s that gives a
  unique channel # for each half/quarter/full width channel
o remove assumptions that half/quarter rate channels on happen in 11a
o remove assumptions that all 11g channels are full width
o ensure ic_curchan is reset on mode change so changing the channel
  list (e.g. on countrycode change) doesn't leave curchan set to an
  invalid channel

There is still an issue with switching rate sets; to be fixed separately.

MFC after:	1 month

1 files changed, 5 insertions, 0 deletions

diff --git a/sys/net80211/_ieee80211.h b/sys/net80211/_ieee80211.h
index 4eb522c..4f3fe29 100644
--- a/sys/net80211/_ieee80211.h
+++ b/sys/net80211/_ieee80211.h
@@ -123,6 +123,7 @@ struct ieee80211_channel {
 #define	IEEE80211_CHAN_PASSIVE	0x0200	/* Only passive scan allowed */
 #define	IEEE80211_CHAN_DYN	0x0400	/* Dynamic CCK-OFDM channel */
 #define	IEEE80211_CHAN_GFSK	0x0800	/* GFSK channel (FHSS PHY) */
+#define	IEEE80211_CHAN_GSM	0x1000	/* 900 MHz spectrum channel */
 #define	IEEE80211_CHAN_HALF	0x4000	/* Half rate channel */
 #define	IEEE80211_CHAN_QUARTER	0x8000	/* Quarter rate channel */
 
@@ -181,6 +182,10 @@ struct ieee80211_channel {
 	(((_c)->ic_flags & IEEE80211_CHAN_HALF) != 0)
 #define	IEEE80211_IS_CHAN_QUARTER(_c) \
 	(((_c)->ic_flags & IEEE80211_CHAN_QUARTER) != 0)
+#define	IEEE80211_IS_CHAN_FULL(_c) \
+	(((_c)->ic_flags & (IEEE80211_CHAN_QUARTER | IEEE80211_CHAN_HALF)) == 0)
+#define	IEEE80211_IS_CHAN_GSM(_c) \
+	(((_c)->ic_flags & IEEE80211_CHAN_GSM) != 0)
 
 /* ni_chan encoding for FH phy */
 #define	IEEE80211_FH_CHANMOD	80