First cut at half/quarter-rate 11a channel support (e.g. for use

in the Public Safety Band):
o add channel flags to identify half/quarter-rate operation
o add rate sets (need to check spec on 4Mb/s in 1/4 rate)
o add if_media definitions for new rates
o split net80211 channel setup out into ieee80211_chan_init
o fixup ieee80211_mhz2ieee and ieee80211_ieee2mhz to understand half/quarter
  rate channels: note we temporarily use a nonstandard/hack numbering that
  avoids overlap with 2.4G channels because we don't (yet) have enough
  state to identify and/or map overlapping channel sets
o fixup ieee80211_ifmedia_init so it can be called post attach and will
  recalculate the channel list and associated state; this enables changing
  channel-related state like the regulatory domain after attach (will be
  needed for 802.11d support too)
o add ieee80211_get_suprates to return a reference to the supported rate
  set for a given channel
o add 3, 4.5, and 27 MB/s tx rates to rate <-> media conversion routines
o const-poison channel arg to ieee80211_chan2mode

1 files changed, 3 insertions, 2 deletions

diff --git a/sys/net80211/ieee80211_proto.c b/sys/net80211/ieee80211_proto.c
index e7441ef..e11fb70 100644
--- a/sys/net80211/ieee80211_proto.c
+++ b/sys/net80211/ieee80211_proto.c
@@ -329,7 +329,8 @@ ieee80211_fix_rate(struct ieee80211_node *ni, int flags)
 	struct ieee80211com *ic = ni->ni_ic;
 	int i, j, ignore, error;
 	int okrate, badrate, fixedrate;
-	struct ieee80211_rateset *srs, *nrs;
+	const struct ieee80211_rateset *srs;
+	struct ieee80211_rateset *nrs;
 	u_int8_t r;
 
 	/*
@@ -341,7 +342,7 @@ ieee80211_fix_rate(struct ieee80211_node *ni, int flags)
 		flags &= ~IEEE80211_F_DOFRATE;
 	error = 0;
 	okrate = badrate = fixedrate = 0;
-	srs = &ic->ic_sup_rates[ieee80211_chan2mode(ic, ni->ni_chan)];
+	srs = ieee80211_get_suprates(ic, ni->ni_chan);
 	nrs = &ni->ni_rates;
 	for (i = 0; i < nrs->rs_nrates; ) {
 		ignore = 0;