--- a/ath/if_ath.c +++ b/ath/if_ath.c @@ -397,6 +397,7 @@ 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 @@ }; #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(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 @@ } 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 @@ 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 @@ 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 +5178,8 @@ "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))) + ath_calibrate((unsigned long) sc->sc_dev); sc->sc_stats.ast_be_xmit++; /* XXX per-VAP? */ } @@ -5403,6 +5429,7 @@ 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 +5441,11 @@ */ 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 +8909,9 @@ /* 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 +9021,11 @@ 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 +9132,8 @@ 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 +9358,8 @@ "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 +9402,7 @@ 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 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 */