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--- a/ath/if_ath.c
+++ b/ath/if_ath.c
@@ -397,6 +397,7 @@ static int countrycode = -1;
static int maxvaps = -1;
static int outdoor = -1;
static int xchanmode = -1;
+static int beacon_cal = 1;
static const char *hal_status_desc[] = {
"No error",
@@ -422,6 +423,7 @@ static struct notifier_block ath_event_b
};
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,52))
+MODULE_PARM(beacon_cal, "i");
MODULE_PARM(countrycode, "i");
MODULE_PARM(maxvaps, "i");
MODULE_PARM(outdoor, "i");
@@ -434,6 +436,7 @@ MODULE_PARM(autocreate, "s");
MODULE_PARM(ratectl, "s");
#else
#include <linux/moduleparam.h>
+module_param(beacon_cal, int, 0600);
module_param(countrycode, int, 0600);
module_param(maxvaps, int, 0600);
module_param(outdoor, int, 0600);
@@ -2600,7 +2603,8 @@ ath_stop_locked(struct net_device *dev)
}
if (!sc->sc_invalid) {
del_timer_sync(&sc->sc_dfs_cac_timer);
- del_timer_sync(&sc->sc_cal_ch);
+ if (!sc->sc_beacon_cal)
+ del_timer_sync(&sc->sc_cal_ch);
}
ath_draintxq(sc);
if (!sc->sc_invalid) {
@@ -2617,6 +2621,20 @@ ath_stop_locked(struct net_device *dev)
return 0;
}
+static void ath_set_beacon_cal(struct ath_softc *sc, int val)
+{
+ if (sc->sc_beacon_cal == !!val)
+ return;
+
+ if (val) {
+ del_timer_sync(&sc->sc_cal_ch);
+ } else {
+ sc->sc_cal_ch.expires = jiffies + (ath_calinterval * HZ);
+ add_timer(&sc->sc_cal_ch);
+ }
+ sc->sc_beacon_cal = !!val && beacon_cal;
+}
+
/*
* Stop the device, grabbing the top-level lock to protect
* against concurrent entry through ath_init (which can happen
@@ -2742,6 +2760,12 @@ ath_reset(struct net_device *dev)
HAL_STATUS status;
/*
+ * XXX: starting the calibration too early seems to lead to
+ * problems with the beacons.
+ */
+ sc->sc_lastcal = jiffies;
+
+ /*
* Convert to a HAL channel description with the flags
* constrained to reflect the current operating mode.
*/
@@ -5154,6 +5178,10 @@ ath_beacon_send(struct ath_softc *sc, in
"Invoking ath_hal_txstart with sc_bhalq: %d\n",
sc->sc_bhalq);
ath_hal_txstart(ah, sc->sc_bhalq);
+ if (sc->sc_beacon_cal && (jiffies > sc->sc_lastcal + (ath_calinterval * HZ))) {
+ sc->sc_cal_ch.expires = jiffies + msecs_to_jiffies(10);
+ add_timer(&sc->sc_cal_ch);
+ }
sc->sc_stats.ast_be_xmit++; /* XXX per-VAP? */
}
@@ -5403,6 +5431,7 @@ ath_beacon_config(struct ath_softc *sc,
ath_hal_beacontimers(ah, &bs);
sc->sc_imask |= HAL_INT_BMISS;
ath_hal_intrset(ah, sc->sc_imask);
+ ath_set_beacon_cal(sc, 0);
} else {
ath_hal_intrset(ah, 0);
if (reset_tsf)
@@ -5414,8 +5443,11 @@ ath_beacon_config(struct ath_softc *sc,
*/
intval |= HAL_BEACON_ENA;
sc->sc_imask |= HAL_INT_SWBA;
+ ath_set_beacon_cal(sc, 1);
ath_beaconq_config(sc);
- }
+ } else
+ ath_set_beacon_cal(sc, 0);
+
#ifdef ATH_SUPERG_DYNTURBO
ath_beacon_dturbo_config(vap, intval &
~(HAL_BEACON_RESET_TSF | HAL_BEACON_ENA));
@@ -8879,6 +8911,9 @@ ath_chan_set(struct ath_softc *sc, struc
/* Enter DFS wait period */
mod_timer(&sc->sc_dfs_cac_timer,
jiffies + (sc->sc_dfs_cac_period * HZ));
+
+ /* This is a good time to start a calibration */
+ ath_set_beacon_cal(sc, 1);
}
/*
* re configure beacons when it is a turbo mode switch.
@@ -8988,8 +9023,11 @@ ath_calibrate(unsigned long arg)
sc->sc_curchan.channel, sc->sc_curchan.channelFlags,
isIQdone ? "done" : "not done");
- sc->sc_cal_ch.expires = jiffies + (ath_calinterval * HZ);
- add_timer(&sc->sc_cal_ch);
+ sc->sc_lastcal = jiffies;
+ if (!sc->sc_beacon_cal) {
+ sc->sc_cal_ch.expires = jiffies + (ath_calinterval * HZ);
+ add_timer(&sc->sc_cal_ch);
+ }
}
static void
@@ -9096,7 +9134,8 @@ ath_newstate(struct ieee80211vap *vap, e
ieee80211_state_name[vap->iv_state],
ieee80211_state_name[nstate]);
- del_timer(&sc->sc_cal_ch); /* periodic calibration timer */
+ if (!sc->sc_beacon_cal)
+ del_timer(&sc->sc_cal_ch); /* periodic calibration timer */
ath_hal_setledstate(ah, leds[nstate]); /* set LED */
netif_stop_queue(dev); /* before we do anything else */
@@ -9321,7 +9360,8 @@ ath_newstate(struct ieee80211vap *vap, e
"VAP -> DFSWAIT_PENDING \n");
/* start calibration timer with a really small value
* 1/10 sec */
- mod_timer(&sc->sc_cal_ch, jiffies + (HZ/10));
+ if (!sc->sc_beacon_cal)
+ mod_timer(&sc->sc_cal_ch, jiffies + (HZ/10));
/* wake the receiver */
netif_wake_queue(dev);
/* don't do the other usual stuff... */
@@ -9364,7 +9404,7 @@ done:
error = avp->av_newstate(vap, nstate, arg);
/* Finally, start any timers. */
- if (nstate == IEEE80211_S_RUN) {
+ if (nstate == IEEE80211_S_RUN && !sc->sc_beacon_cal) {
/* start periodic recalibration timer */
mod_timer(&sc->sc_cal_ch, jiffies + (ath_calinterval * HZ));
}
--- a/ath/if_athvar.h
+++ b/ath/if_athvar.h
@@ -778,6 +778,8 @@ struct ath_softc {
struct ieee80211vap **sc_bslot; /* beacon xmit slots */
int sc_bnext; /* next slot for beacon xmit */
+ int sc_beacon_cal; /* use beacon timer for calibration */
+ u_int64_t sc_lastcal; /* last time the calibration was performed */
struct timer_list sc_cal_ch; /* calibration timer */
HAL_NODE_STATS sc_halstats; /* station-mode rssi stats */
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