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Index: madwifi-ng-r2568-20070710/ath/if_ath.c
===================================================================
--- madwifi-ng-r2568-20070710.orig/ath/if_ath.c 2007-08-01 11:07:47.882943145 +0200
+++ madwifi-ng-r2568-20070710/ath/if_ath.c 2007-08-01 11:41:11.781138794 +0200
@@ -203,6 +203,7 @@
static void ath_flushrecv(struct ath_softc *);
static void ath_chan_change(struct ath_softc *, struct ieee80211_channel *);
static void ath_calibrate(unsigned long);
+static void ath_mib_enable(unsigned long);
static int ath_newstate(struct ieee80211vap *, enum ieee80211_state, int);
static void ath_scan_start(struct ieee80211com *);
@@ -660,6 +661,10 @@
sc->sc_cal_ch.function = ath_calibrate;
sc->sc_cal_ch.data = (unsigned long) dev;
+ init_timer(&sc->sc_mib_enable);
+ sc->sc_mib_enable.function = ath_mib_enable;
+ sc->sc_mib_enable.data = (unsigned long) sc;
+
#ifdef ATH_SUPERG_DYNTURBO
init_timer(&sc->sc_dturbo_switch_mode);
sc->sc_dturbo_switch_mode.function = ath_turbo_switch_mode;
@@ -1751,16 +1756,19 @@
if (status & HAL_INT_MIB) {
sc->sc_stats.ast_mib++;
/*
- * Disable interrupts until we service the MIB
- * interrupt; otherwise it will continue to fire.
- */
- ath_hal_intrset(ah, 0);
- /*
- * Let the HAL handle the event. We assume it will
- * clear whatever condition caused the interrupt.
+ * When the card receives lots of PHY errors, the MIB
+ * interrupt will fire at a very rapid rate. We will use
+ * a timer to enforce at least 1 jiffy delay between
+ * MIB interrupts. This should be unproblematic, since
+ * the hardware will continue to update the counters in the
+ * mean time.
*/
- ath_hal_mibevent(ah, &sc->sc_halstats);
+ sc->sc_imask &= ~HAL_INT_MIB;
ath_hal_intrset(ah, sc->sc_imask);
+ mod_timer(&sc->sc_mib_enable, jiffies + 1);
+
+ /* Let the HAL handle the event. */
+ ath_hal_mibevent(ah, &sc->sc_halstats);
}
}
if (needmark)
@@ -8029,6 +8037,19 @@
}
/*
+ * Enable MIB interrupts again, after the ISR disabled them
+ * to slow down the rate of PHY error reporting.
+ */
+static void
+ath_mib_enable(unsigned long arg)
+{
+ struct ath_softc *sc = (struct ath_softc *) arg;
+
+ sc->sc_imask |= HAL_INT_MIB;
+ ath_hal_intrset(sc->sc_ah, sc->sc_imask);
+}
+
+/*
* Periodically recalibrate the PHY to account
* for temperature/environment changes.
*/
Index: madwifi-ng-r2568-20070710/ath/if_athvar.h
===================================================================
--- madwifi-ng-r2568-20070710.orig/ath/if_athvar.h 2007-08-01 11:33:50.800008711 +0200
+++ madwifi-ng-r2568-20070710/ath/if_athvar.h 2007-08-01 11:34:33.202425088 +0200
@@ -687,6 +687,7 @@
struct ctl_table *sc_sysctls;
u_int16_t sc_reapcount; /* # of tx buffers reaped after net dev stopped */
+ struct timer_list sc_mib_enable;
#ifdef ATH_REVERSE_ENGINEERING
u_int8_t register_snapshot[MAX_REGISTER_ADDRESS];
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