static void
print_chaninfo(const struct ieee80211_channel *c)
{
char buf[14];
buf[0] = '\0';
if (IEEE80211_IS_CHAN_FHSS(c))
strlcat(buf, " FHSS", sizeof(buf));
if (IEEE80211_IS_CHAN_A(c))
strlcat(buf, " 11a", sizeof(buf));
/* XXX 11g schizophrenia */
if (IEEE80211_IS_CHAN_G(c) ||
IEEE80211_IS_CHAN_PUREG(c))
strlcat(buf, " 11g", sizeof(buf));
else if (IEEE80211_IS_CHAN_B(c))
strlcat(buf, " 11b", sizeof(buf));
if (IEEE80211_IS_CHAN_STURBO(c))
strlcat(buf, " Static", sizeof(buf));
if (IEEE80211_IS_CHAN_DTURBO(c))
strlcat(buf, " Dynamic", sizeof(buf));
if (IEEE80211_IS_CHAN_HALF(c))
strlcat(buf, " Half", sizeof(buf));
if (IEEE80211_IS_CHAN_QUARTER(c))
strlcat(buf, " Quarter", sizeof(buf));
printf("Channel %3u : %u%c%c Mhz%-14.14s",
c->ic_ieee, c->ic_freq,
IEEE80211_IS_CHAN_PASSIVE(c) ? '*' : ' ',
IEEE80211_IS_CHAN_RADAR(c) ? '!' : ' ',
buf);
}
static void
cac_timeout_callout(void *arg)
{
struct ieee80211vap *vap = arg;
struct ieee80211com *ic;
struct ieee80211_dfs_state *dfs;
int i;
wlan_serialize_enter();
ic = vap->iv_ic;
dfs = &ic->ic_dfs;
if (vap->iv_state != IEEE80211_S_CAC) { /* NB: just in case */
wlan_serialize_exit();
return;
}
/*
* When radar is detected during a CAC we are woken
* up prematurely to switch to a new channel.
* Check the channel to decide how to act.
*/
if (IEEE80211_IS_CHAN_RADAR(ic->ic_curchan)) {
ieee80211_notify_cac(ic, ic->ic_curchan,
IEEE80211_NOTIFY_CAC_RADAR);
if_printf(vap->iv_ifp,
"CAC timer on channel %u (%u MHz) stopped due to radar\n",
ic->ic_curchan->ic_ieee, ic->ic_curchan->ic_freq);
/* XXX clobbers any existing desired channel */
/* NB: dfs->newchan may be NULL, that's ok */
vap->iv_des_chan = dfs->newchan;
/* XXX recursive lock need ieee80211_new_state_locked */
ieee80211_new_state(vap, IEEE80211_S_SCAN, 0);
} else {
if_printf(vap->iv_ifp,
"CAC timer on channel %u (%u MHz) expired; "
"no radar detected\n",
ic->ic_curchan->ic_ieee, ic->ic_curchan->ic_freq);
/*
* Mark all channels with the current frequency
* as having completed CAC; this keeps us from
* doing it again until we change channels.
*/
for (i = 0; i < ic->ic_nchans; i++) {
struct ieee80211_channel *c = &ic->ic_channels[i];
if (c->ic_freq == ic->ic_curchan->ic_freq)
c->ic_state |= IEEE80211_CHANSTATE_CACDONE;
}
ieee80211_notify_cac(ic, ic->ic_curchan,
IEEE80211_NOTIFY_CAC_EXPIRE);
ieee80211_cac_completeswitch(vap);
}
wlan_serialize_exit();
}
struct ieee80211_channel *
ieee80211_dfs_pickchannel(struct ieee80211com *ic)
{
struct ieee80211_channel *c;
int i, flags;
uint16_t v;
/*
* Consult the scan cache first.
*/
flags = ic->ic_curchan->ic_flags & IEEE80211_CHAN_ALL;
/*
* XXX if curchan is HT this will never find a channel
* XXX 'cuz we scan only legacy channels
*/
c = ieee80211_scan_pickchannel(ic, flags);
if (c != NULL)
return c;
/*
* No channel found in scan cache; select a compatible
* one at random (skipping channels where radar has
* been detected).
*/
get_random_bytes(&v, sizeof(v));
v %= ic->ic_nchans;
for (i = v; i < ic->ic_nchans; i++) {
c = &ic->ic_channels[i];
if (!IEEE80211_IS_CHAN_RADAR(c) &&
(c->ic_flags & flags) == flags)
return c;
}
for (i = 0; i < v; i++) {
c = &ic->ic_channels[i];
if (!IEEE80211_IS_CHAN_RADAR(c) &&
(c->ic_flags & flags) == flags)
return c;
}
if_printf(ic->ic_ifp, "HELP, no channel located to switch to!\n");
return NULL;
}
static void
dfs_timeout(void *arg)
{
struct ieee80211com *ic = arg;
struct ieee80211_dfs_state *dfs = &ic->ic_dfs;
struct ieee80211_channel *c;
int i, oldest, now;
IEEE80211_LOCK_ASSERT(ic);
now = oldest = ticks;
for (i = 0; i < ic->ic_nchans; i++) {
c = &ic->ic_channels[i];
if (IEEE80211_IS_CHAN_RADAR(c)) {
if (time_after_eq(now, dfs->nol_event[i]+NOL_TIMEOUT)) {
c->ic_state &= ~IEEE80211_CHANSTATE_RADAR;
if (c->ic_state & IEEE80211_CHANSTATE_NORADAR) {
/*
* NB: do this here so we get only one
* msg instead of one for every channel
* table entry.
*/
if_printf(ic->ic_ifp, "radar on channel"
" %u (%u MHz) cleared after timeout\n",
c->ic_ieee, c->ic_freq);
/* notify user space */
c->ic_state &=
~IEEE80211_CHANSTATE_NORADAR;
ieee80211_notify_radar(ic, c);
}
} else if (dfs->nol_event[i] < oldest)
oldest = dfs->nol_event[i];
}
}
if (oldest != now) {
/* arrange to process next channel up for a status change */
callout_schedule_dfly(&dfs->nol_timer, oldest + NOL_TIMEOUT - now,
dfs_timeout, ic);
}
}
/*
* IEEE80211_M_IBSS+IEEE80211_M_AHDEMO vap state machine handler.
*/
static int
adhoc_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
{
struct ieee80211com *ic = vap->iv_ic;
struct ieee80211_node *ni;
enum ieee80211_state ostate;
IEEE80211_LOCK_ASSERT(vap->iv_ic);
ostate = vap->iv_state;
IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n",
__func__, ieee80211_state_name[ostate],
ieee80211_state_name[nstate], arg);
vap->iv_state = nstate; /* state transition */
if (ostate != IEEE80211_S_SCAN)
ieee80211_cancel_scan(vap); /* background scan */
ni = vap->iv_bss; /* NB: no reference held */
switch (nstate) {
case IEEE80211_S_INIT:
switch (ostate) {
case IEEE80211_S_SCAN:
ieee80211_cancel_scan(vap);
break;
default:
break;
}
if (ostate != IEEE80211_S_INIT) {
/* NB: optimize INIT -> INIT case */
ieee80211_reset_bss(vap);
}
break;
case IEEE80211_S_SCAN:
switch (ostate) {
case IEEE80211_S_RUN: /* beacon miss */
/* purge station table; entries are stale */
ieee80211_iterate_nodes(&ic->ic_sta, sta_leave, vap);
/* fall thru... */
case IEEE80211_S_INIT:
if (vap->iv_des_chan != IEEE80211_CHAN_ANYC &&
!IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan)) {
/*
* Already have a channel; bypass the
* scan and startup immediately.
*/
ieee80211_create_ibss(vap,
ieee80211_ht_adjust_channel(ic,
vap->iv_des_chan, vap->iv_flags_ht));
break;
}
/*
* Initiate a scan. We can come here as a result
* of an IEEE80211_IOC_SCAN_REQ too in which case
* the vap will be marked with IEEE80211_FEXT_SCANREQ
* and the scan request parameters will be present
* in iv_scanreq. Otherwise we do the default.
*/
if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) {
ieee80211_check_scan(vap,
vap->iv_scanreq_flags,
vap->iv_scanreq_duration,
vap->iv_scanreq_mindwell,
vap->iv_scanreq_maxdwell,
vap->iv_scanreq_nssid, vap->iv_scanreq_ssid);
vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ;
} else
ieee80211_check_scan_current(vap);
break;
case IEEE80211_S_SCAN:
/*
* This can happen because of a change in state
* that requires a reset. Trigger a new scan
* unless we're in manual roaming mode in which
* case an application must issue an explicit request.
*/
if (vap->iv_roaming == IEEE80211_ROAMING_AUTO)
ieee80211_check_scan_current(vap);
break;
default:
goto invalid;
}
break;
case IEEE80211_S_RUN:
if (vap->iv_flags & IEEE80211_F_WPA) {
/* XXX validate prerequisites */
}
switch (ostate) {
case IEEE80211_S_SCAN:
#ifdef IEEE80211_DEBUG
if (ieee80211_msg_debug(vap)) {
ieee80211_note(vap,
"synchronized with %s ssid ",
ether_sprintf(ni->ni_bssid));
ieee80211_print_essid(vap->iv_bss->ni_essid,
ni->ni_esslen);
/* XXX MCS/HT */
printf(" channel %d start %uMb\n",
ieee80211_chan2ieee(ic, ic->ic_curchan),
IEEE80211_RATE2MBS(ni->ni_txrate));
}
#endif
break;
case IEEE80211_S_RUN: /* IBSS merge */
break;
default:
goto invalid;
}
/*
* When 802.1x is not in use mark the port authorized
* at this point so traffic can flow.
*/
if (ni->ni_authmode != IEEE80211_AUTH_8021X)
ieee80211_node_authorize(ni);
/*
* Fake association when joining an existing bss.
*/
if (!IEEE80211_ADDR_EQ(ni->ni_macaddr, vap->iv_myaddr) &&
ic->ic_newassoc != NULL)
ic->ic_newassoc(ni, ostate != IEEE80211_S_RUN);
break;
case IEEE80211_S_SLEEP:
vap->iv_sta_ps(vap, 0);
break;
default:
invalid:
IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
"%s: unexpected state transition %s -> %s\n", __func__,
ieee80211_state_name[ostate], ieee80211_state_name[nstate]);
break;
}
return 0;
}
void
dfs_process_phyerr(struct ieee80211com *ic, void *buf, uint16_t datalen,
uint8_t r_rssi, uint8_t r_ext_rssi, uint32_t r_rs_tstamp,
uint64_t r_fulltsf, bool enable_log)
{
struct ath_dfs *dfs = (struct ath_dfs *)ic->ic_dfs;
struct dfs_ieee80211_channel *chan = ic->ic_curchan;
struct dfs_event *event;
struct dfs_phy_err e;
int empty;
if (dfs == NULL) {
CDF_TRACE(CDF_MODULE_ID_SAP, CDF_TRACE_LEVEL_ERROR,
"%s: sc_dfs is NULL\n", __func__);
return;
}
dfs->dfs_phyerr_count++;
dump_phyerr_contents(buf, datalen);
/*
* XXX The combined_rssi_ok support has been removed.
* This was only clear for Owl.
*
* XXX TODO: re-add this; it requires passing in the ctl/ext
* RSSI set from the RX status descriptor.
*
* XXX TODO TODO: this may be done for us from the legacy
* phy error path in ath_dev; please review that code.
*/
/*
* At this time we have a radar pulse that we need to examine and
* queue. But if dfs_process_radarevent already detected radar and set
* CHANNEL_INTERFERENCE flag then do not queue any more radar data.
* When we are in a new channel this flag will be clear and we will
* start queueing data for new channel. (EV74162)
*/
if (dfs->dfs_debug_mask & ATH_DEBUG_DFS_PHYERR_PKT)
dump_phyerr_contents(buf, datalen);
if (chan == NULL) {
CDF_TRACE(CDF_MODULE_ID_SAP, CDF_TRACE_LEVEL_ERROR,
"%s: chan is NULL\n", __func__);
return;
}
cdf_spin_lock_bh(&ic->chan_lock);
if (IEEE80211_IS_CHAN_RADAR(chan)) {
cdf_spin_unlock_bh(&ic->chan_lock);
DFS_DPRINTK(dfs, ATH_DEBUG_DFS1,
"%s: Radar already found in the channel, "
" do not queue radar data\n", __func__);
return;
}
cdf_spin_unlock_bh(&ic->chan_lock);
dfs->ath_dfs_stats.total_phy_errors++;
DFS_DPRINTK(dfs, ATH_DEBUG_DFS2,
"%s[%d] phyerr %d len %d\n",
__func__, __LINE__,
dfs->ath_dfs_stats.total_phy_errors, datalen);
/*
* hardware stores this as 8 bit signed value.
* we will cap it at 0 if it is a negative number
*/
if (r_rssi & 0x80)
r_rssi = 0;
if (r_ext_rssi & 0x80)
r_ext_rssi = 0;
OS_MEMSET(&e, 0, sizeof(e));
/*
* This is a bit evil - instead of just passing in
* the chip version, the existing code uses a set
* of HAL capability bits to determine what is
* possible.
*
* The way I'm decoding it is thus:
*
* + DFS enhancement? Merlin or later
* + DFS extension channel? Sowl or later. (Howl?)
* + otherwise, Owl (and legacy.)
*/
if (dfs->dfs_caps.ath_chip_is_bb_tlv) {
if (dfs_process_phyerr_bb_tlv(dfs, buf, datalen, r_rssi,
r_ext_rssi, r_rs_tstamp,
r_fulltsf, &e,
enable_log) == 0) {
dfs->dfs_phyerr_reject_count++;
return;
} else {
if (dfs->dfs_phyerr_freq_min > e.freq)
dfs->dfs_phyerr_freq_min = e.freq;
if (dfs->dfs_phyerr_freq_max < e.freq)
dfs->dfs_phyerr_freq_max = e.freq;
}
} else if (dfs->dfs_caps.ath_dfs_use_enhancement) {
if (dfs_process_phyerr_merlin(dfs, buf, datalen, r_rssi,
r_ext_rssi, r_rs_tstamp,
r_fulltsf, &e) == 0) {
return;
}
} else if (dfs->dfs_caps.ath_dfs_ext_chan_ok) {
if (dfs_process_phyerr_sowl(dfs, buf, datalen, r_rssi,
r_ext_rssi, r_rs_tstamp, r_fulltsf,
&e) == 0) {
return;
}
} else {
if (dfs_process_phyerr_owl(dfs, buf, datalen, r_rssi,
r_ext_rssi, r_rs_tstamp, r_fulltsf,
&e) == 0) {
return;
}
}
CDF_TRACE(CDF_MODULE_ID_SAP, CDF_TRACE_LEVEL_INFO,
"\n %s: Frequency at which the phyerror was injected = %d",
__func__, e.freq);
/*
* If the hardware supports radar reporting on the extension channel
* it will supply FFT data for longer radar pulses.
*
* TLV chips don't go through this software check - the hardware
* check should be enough. If we want to do software checking
* later on then someone will have to craft an FFT parser
* suitable for the TLV FFT data format.
*/
if ((!dfs->dfs_caps.ath_chip_is_bb_tlv) &&
dfs->dfs_caps.ath_dfs_ext_chan_ok) {
/*
* HW has a known issue with chirping pulses injected at or
* around DC in 40MHz mode. Such pulses are reported with
* much lower durations and SW then discards them because
* they do not fit the minimum bin5 pulse duration.
*
* To work around this issue, if a pulse is within a 10us
* range of the bin5 min duration, check if the pulse is
* chirping. If the pulse is chirping, bump up the duration
* to the minimum bin5 duration.
*
* This makes sure that a valid chirping pulse will not be
* discarded because of incorrect low duration.
*
* TBD - Is it possible to calculate the 'real' duration of
* the pulse using the slope of the FFT data?
*
* TBD - Use FFT data to differentiate between radar pulses
* and false PHY errors.
* This will let us reduce the number of false alarms seen.
*
* BIN 5 chirping pulses are only for FCC or Japan MMK4 domain
*/
if (((dfs->dfsdomain == DFS_FCC_DOMAIN) ||
(dfs->dfsdomain == DFS_MKK4_DOMAIN)) &&
(e.dur >= MAYBE_BIN5_DUR) && (e.dur < MAX_BIN5_DUR)) {
int add_dur;
int slope = 0, dc_found = 0;
/*
* Set the event chirping flags; as we're doing
* an actual chirp check.
*/
e.do_check_chirp = 1;
e.is_hw_chirp = 0;
e.is_sw_chirp = 0;
/*
* dfs_check_chirping() expects is_pri and is_ext
* to be '1' for true and '0' for false for now,
* as the function itself uses these values in
* constructing things rather than testing them
* for 'true' or 'false'.
*/
add_dur = dfs_check_chirping(dfs, buf, datalen,
(e.is_pri ? 1 : 0),
(e.is_ext ? 1 : 0),
&slope, &dc_found);
if (add_dur) {
DFS_DPRINTK(dfs, ATH_DEBUG_DFS_PHYERR,
"old dur %d slope =%d\n", e.dur,
slope);
e.is_sw_chirp = 1;
/* bump up to a random bin5 pulse duration */
if (e.dur < MIN_BIN5_DUR) {
e.dur = dfs_get_random_bin5_dur(dfs,
e.fulltsf);
}
DFS_DPRINTK(dfs, ATH_DEBUG_DFS_PHYERR,
"new dur %d\n", e.dur);
} else {
/* set the duration so that it is rejected */
e.is_sw_chirp = 0;
e.dur = MAX_BIN5_DUR + 100;
DFS_DPRINTK(dfs, ATH_DEBUG_DFS_PHYERR,
"is_chirping = %d dur=%d\n",
add_dur, e.dur);
}
} else {
/*
* We have a pulse that is either bigger than
* MAX_BIN5_DUR or * less than MAYBE_BIN5_DUR
*/
if ((dfs->dfsdomain == DFS_FCC_DOMAIN) ||
(dfs->dfsdomain == DFS_MKK4_DOMAIN)) {
/*
* XXX Would this result in very large pulses
* wrapping around to become short pulses?
*/
if (e.dur >= MAX_BIN5_DUR) {
/*
* set the duration so that it is
* rejected
*/
e.dur = MAX_BIN5_DUR + 50;
}
}
}
}
/*
* Add the parsed, checked and filtered entry to the radar pulse
* event list. This is then checked by dfs_radar_processevent().
*
* XXX TODO: some filtering is still done below this point - fix
* XXX this!
*/
ATH_DFSEVENTQ_LOCK(dfs);
empty = STAILQ_EMPTY(&(dfs->dfs_eventq));
ATH_DFSEVENTQ_UNLOCK(dfs);
if (empty) {
return;
}
/*
* If the channel is a turbo G channel, then the event is
* for the adaptive radio (AR) pattern matching rather than
* radar detection.
*/
cdf_spin_lock_bh(&ic->chan_lock);
if ((chan->ic_flags & CHANNEL_108G) == CHANNEL_108G) {
cdf_spin_unlock_bh(&ic->chan_lock);
if (!(dfs->dfs_proc_phyerr & DFS_AR_EN)) {
DFS_DPRINTK(dfs, ATH_DEBUG_DFS2,
"%s: DFS_AR_EN not enabled\n", __func__);
return;
}
ATH_DFSEVENTQ_LOCK(dfs);
event = STAILQ_FIRST(&(dfs->dfs_eventq));
if (event == NULL) {
ATH_DFSEVENTQ_UNLOCK(dfs);
DFS_DPRINTK(dfs, ATH_DEBUG_DFS,
"%s: no more events space left\n",
__func__);
return;
}
STAILQ_REMOVE_HEAD(&(dfs->dfs_eventq), re_list);
ATH_DFSEVENTQ_UNLOCK(dfs);
event->re_rssi = e.rssi;
event->re_dur = e.dur;
event->re_full_ts = e.fulltsf;
event->re_ts = (e.rs_tstamp) & DFS_TSMASK;
event->re_chanindex = dfs->dfs_curchan_radindex;
event->re_flags = 0;
event->sidx = e.sidx;
/*
* Handle chirp flags.
*/
if (e.do_check_chirp) {
event->re_flags |= DFS_EVENT_CHECKCHIRP;
if (e.is_hw_chirp)
event->re_flags |= DFS_EVENT_HW_CHIRP;
if (e.is_sw_chirp)
event->re_flags |= DFS_EVENT_SW_CHIRP;
}
ATH_ARQ_LOCK(dfs);
STAILQ_INSERT_TAIL(&(dfs->dfs_arq), event, re_list);
ATH_ARQ_UNLOCK(dfs);
} else {
if (IEEE80211_IS_CHAN_DFS(chan)) {
cdf_spin_unlock_bh(&ic->chan_lock);
if (!(dfs->dfs_proc_phyerr & DFS_RADAR_EN)) {
DFS_DPRINTK(dfs, ATH_DEBUG_DFS3,
"%s: DFS_RADAR_EN not enabled\n",
__func__);
return;
}
/*
* rssi is not accurate for short pulses, so do
* not filter based on that for short duration pulses
*
* XXX do this filtering above?
*/
if (dfs->dfs_caps.ath_dfs_ext_chan_ok) {
if ((e.rssi < dfs->dfs_rinfo.rn_minrssithresh &&
(e.dur > 4)) ||
e.dur > (dfs->dfs_rinfo.rn_maxpulsedur)) {
dfs->ath_dfs_stats.rssi_discards++;
DFS_DPRINTK(dfs, ATH_DEBUG_DFS1,
"Extension channel pulse is "
"discarded: dur=%d, "
"maxpulsedur=%d, rssi=%d, "
"minrssi=%d\n",
e.dur,
dfs->dfs_rinfo.
rn_maxpulsedur, e.rssi,
dfs->dfs_rinfo.
rn_minrssithresh);
return;
}
} else {
if (e.rssi < dfs->dfs_rinfo.rn_minrssithresh ||
e.dur > dfs->dfs_rinfo.rn_maxpulsedur) {
/* XXX TODO add a debug statement? */
dfs->ath_dfs_stats.rssi_discards++;
return;
}
}
/*
* Add the event to the list, if there's space.
*/
ATH_DFSEVENTQ_LOCK(dfs);
event = STAILQ_FIRST(&(dfs->dfs_eventq));
if (event == NULL) {
ATH_DFSEVENTQ_UNLOCK(dfs);
DFS_DPRINTK(dfs, ATH_DEBUG_DFS,
"%s: no more events space left\n",
__func__);
return;
}
STAILQ_REMOVE_HEAD(&(dfs->dfs_eventq), re_list);
ATH_DFSEVENTQ_UNLOCK(dfs);
dfs->dfs_phyerr_queued_count++;
dfs->dfs_phyerr_w53_counter++;
event->re_dur = e.dur;
event->re_full_ts = e.fulltsf;
event->re_ts = (e.rs_tstamp) & DFS_TSMASK;
event->re_rssi = e.rssi;
event->sidx = e.sidx;
/*
* Handle chirp flags.
*/
if (e.do_check_chirp) {
event->re_flags |= DFS_EVENT_CHECKCHIRP;
if (e.is_hw_chirp)
event->re_flags |= DFS_EVENT_HW_CHIRP;
if (e.is_sw_chirp)
event->re_flags |= DFS_EVENT_SW_CHIRP;
}
/*
* Correctly set which channel is being reported on
*/
if (e.is_pri) {
event->re_chanindex = dfs->dfs_curchan_radindex;
} else {
if (dfs->dfs_extchan_radindex == -1) {
DFS_DPRINTK(dfs, ATH_DEBUG_DFS_PHYERR,
"%s - phyerr on ext channel\n",
__func__);
}
event->re_chanindex = dfs->dfs_extchan_radindex;
DFS_DPRINTK(dfs, ATH_DEBUG_DFS_PHYERR,
"%s New extension channel event is added "
"to queue\n", __func__);
}
ATH_DFSQ_LOCK(dfs);
STAILQ_INSERT_TAIL(&(dfs->dfs_radarq), event, re_list);
ATH_DFSQ_UNLOCK(dfs);
} else {
cdf_spin_unlock_bh(&ic->chan_lock);
}
}
/*
* Schedule the radar/AR task as appropriate.
*
* XXX isn't a lock needed for ath_radar_tasksched?
*/
/*
* Commenting out the dfs_process_ar_event() since the function is never
* called at run time as dfs_arq will be empty and the function
* dfs_process_ar_event is obsolete and function definition is removed
* as part of dfs_ar.c file
*
* if (!STAILQ_EMPTY(&dfs->dfs_arq))
* // XXX shouldn't this be a task/timer too?
* dfs_process_ar_event(dfs, ic->ic_curchan);
*/
if (!STAILQ_EMPTY(&dfs->dfs_radarq) && !dfs->ath_radar_tasksched) {
dfs->ath_radar_tasksched = 1;
OS_SET_TIMER(&dfs->ath_dfs_task_timer, 0);
}
#undef EXT_CH_RADAR_FOUND
#undef PRI_CH_RADAR_FOUND
#undef EXT_CH_RADAR_EARLY_FOUND
}
