static char
channel_type(const struct ieee80211_channel *c)
{
if (IEEE80211_IS_CHAN_ST(c))
return 'S';
if (IEEE80211_IS_CHAN_108A(c))
return 'T';
if (IEEE80211_IS_CHAN_108G(c))
return 'G';
if (IEEE80211_IS_CHAN_HT(c))
return 'n';
if (IEEE80211_IS_CHAN_A(c))
return 'a';
if (IEEE80211_IS_CHAN_ANYG(c))
return 'g';
if (IEEE80211_IS_CHAN_B(c))
return 'b';
return 'f';
}
/*
* Fill in 802.11 available channel set, mark
* all available channels as active, and pick
* a default channel if not already specified.
*/
static void
ieee80211_chan_init(struct ieee80211com *ic)
{
#define DEFAULTRATES(m, def) do { \
if (ic->ic_sup_rates[m].rs_nrates == 0) \
ic->ic_sup_rates[m] = def; \
} while (0)
struct ieee80211_channel *c;
int i;
KASSERT(0 < ic->ic_nchans && ic->ic_nchans <= IEEE80211_CHAN_MAX,
("invalid number of channels specified: %u", ic->ic_nchans));
memset(ic->ic_chan_avail, 0, sizeof(ic->ic_chan_avail));
memset(ic->ic_modecaps, 0, sizeof(ic->ic_modecaps));
setbit(ic->ic_modecaps, IEEE80211_MODE_AUTO);
for (i = 0; i < ic->ic_nchans; i++) {
c = &ic->ic_channels[i];
KASSERT(c->ic_flags != 0, ("channel with no flags"));
/*
* Help drivers that work only with frequencies by filling
* in IEEE channel #'s if not already calculated. Note this
* mimics similar work done in ieee80211_setregdomain when
* changing regulatory state.
*/
if (c->ic_ieee == 0)
c->ic_ieee = ieee80211_mhz2ieee(c->ic_freq,c->ic_flags);
if (IEEE80211_IS_CHAN_HT40(c) && c->ic_extieee == 0)
c->ic_extieee = ieee80211_mhz2ieee(c->ic_freq +
(IEEE80211_IS_CHAN_HT40U(c) ? 20 : -20),
c->ic_flags);
/* default max tx power to max regulatory */
if (c->ic_maxpower == 0)
c->ic_maxpower = 2*c->ic_maxregpower;
setbit(ic->ic_chan_avail, c->ic_ieee);
/*
* Identify mode capabilities.
*/
if (IEEE80211_IS_CHAN_A(c))
setbit(ic->ic_modecaps, IEEE80211_MODE_11A);
if (IEEE80211_IS_CHAN_B(c))
setbit(ic->ic_modecaps, IEEE80211_MODE_11B);
if (IEEE80211_IS_CHAN_ANYG(c))
setbit(ic->ic_modecaps, IEEE80211_MODE_11G);
if (IEEE80211_IS_CHAN_FHSS(c))
setbit(ic->ic_modecaps, IEEE80211_MODE_FH);
if (IEEE80211_IS_CHAN_108A(c))
setbit(ic->ic_modecaps, IEEE80211_MODE_TURBO_A);
if (IEEE80211_IS_CHAN_108G(c))
setbit(ic->ic_modecaps, IEEE80211_MODE_TURBO_G);
if (IEEE80211_IS_CHAN_ST(c))
setbit(ic->ic_modecaps, IEEE80211_MODE_STURBO_A);
if (IEEE80211_IS_CHAN_HALF(c))
setbit(ic->ic_modecaps, IEEE80211_MODE_HALF);
if (IEEE80211_IS_CHAN_QUARTER(c))
setbit(ic->ic_modecaps, IEEE80211_MODE_QUARTER);
if (IEEE80211_IS_CHAN_HTA(c))
setbit(ic->ic_modecaps, IEEE80211_MODE_11NA);
if (IEEE80211_IS_CHAN_HTG(c))
setbit(ic->ic_modecaps, IEEE80211_MODE_11NG);
}
/* initialize candidate channels to all available */
memcpy(ic->ic_chan_active, ic->ic_chan_avail,
sizeof(ic->ic_chan_avail));
/* sort channel table to allow lookup optimizations */
ieee80211_sort_channels(ic->ic_channels, ic->ic_nchans);
/* invalidate any previous state */
ic->ic_bsschan = IEEE80211_CHAN_ANYC;
ic->ic_prevchan = NULL;
ic->ic_csa_newchan = NULL;
/* arbitrarily pick the first channel */
ic->ic_curchan = &ic->ic_channels[0];
ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan);
/* fillin well-known rate sets if driver has not specified */
DEFAULTRATES(IEEE80211_MODE_11B, ieee80211_rateset_11b);
DEFAULTRATES(IEEE80211_MODE_11G, ieee80211_rateset_11g);
DEFAULTRATES(IEEE80211_MODE_11A, ieee80211_rateset_11a);
DEFAULTRATES(IEEE80211_MODE_TURBO_A, ieee80211_rateset_11a);
DEFAULTRATES(IEEE80211_MODE_TURBO_G, ieee80211_rateset_11g);
DEFAULTRATES(IEEE80211_MODE_STURBO_A, ieee80211_rateset_11a);
DEFAULTRATES(IEEE80211_MODE_HALF, ieee80211_rateset_half);
DEFAULTRATES(IEEE80211_MODE_QUARTER, ieee80211_rateset_quarter);
DEFAULTRATES(IEEE80211_MODE_11NA, ieee80211_rateset_11a);
DEFAULTRATES(IEEE80211_MODE_11NG, ieee80211_rateset_11g);
/*
* Set auto mode to reset active channel state and any desired channel.
*/
(void) ieee80211_setmode(ic, IEEE80211_MODE_AUTO);
#undef DEFAULTRATES
}