openwrt-xburst/package/madwifi/patches/452-minstrel_no_timer.patch

--- a/ath_rate/minstrel/minstrel.c
+++ b/ath_rate/minstrel/minstrel.c
@@ -119,6 +119,7 @@
 #include "minstrel.h"
 
 #define ONE_SECOND (1000 * 1000)  /* 1 second, or 1000 milliseconds; eternity, in other words */
+#define TIMER_INTERVAL 100 /* msecs */
 
 #include "release.h"
 
@@ -128,9 +129,6 @@ static char *dev_info = "ath_rate_minstr
 #define STALE_FAILURE_TIMEOUT_MS 10000
 #define ENABLE_MRR 1
 
-static int ath_timer_interval = (1000 / 10); /* every 1/10 second, timer runs */
-static void ath_timer_function(unsigned long data);
-
 /* 10% of the time, send a packet at something other than the optimal rate, which fills
  * the statistics tables nicely. This percentage is applied to the first packet of the
  * multi rate retry chain. */
@@ -142,7 +140,7 @@ static void ath_rate_ctl_reset(struct at
 /* Calculate the throughput and probability of success for each node
  * we are talking on, based on the statistics collected during the
  * last timer period. */
-static void ath_rate_statistics(void *arg, struct ieee80211_node *ni);
+static void ath_rate_statistics(struct ieee80211_node *ni);
 
 
 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,52))
@@ -204,6 +202,11 @@ ath_rate_findrate(struct ath_softc *sc, 
 		unsigned int ndx, offset;
 		int mrr;
 
+
+		if (abs(jiffies - sn->last_update) > msecs_to_jiffies(TIMER_INTERVAL)) {
+			ath_rate_statistics(&an->an_node);
+			sn->last_update = jiffies;
+		}
 		if (sn->num_rates <= 0) {
 			    printk(KERN_WARNING "%s: no rates for " MAC_FMT "?\n",
 			           dev_info,
@@ -640,54 +643,11 @@ ath_rate_newstate(struct ieee80211vap *v
 		}
 }
 
-static void
-ath_timer_function(unsigned long data)
-{
-		struct minstrel_softc *ssc = (struct minstrel_softc *) data;
-		struct ath_softc *sc = ssc->sc;
-		struct ieee80211com *ic;
-		struct net_device *dev = ssc->sc_dev;
-		struct timer_list *timer;
-		unsigned int interval = ath_timer_interval;
-
-		if (dev == NULL)
-			DPRINTF(sc, ATH_DEBUG_RATE, "%s: 'dev' is null in this timer \n", __func__);
-
-		if (sc == NULL)
-			DPRINTF(sc, ATH_DEBUG_RATE, "%s: 'sc' is null in this timer\n", __func__);
-
-		ic = &sc->sc_ic;
-
-		if (ssc->close_timer_now)
-			return;
-
-		if (dev->flags & IFF_RUNNING) {
-			sc->sc_stats.ast_rate_calls++;
-
-			if (ic->ic_opmode == IEEE80211_M_STA) {
-				struct ieee80211vap *tmpvap;
-				TAILQ_FOREACH(tmpvap, &ic->ic_vaps, iv_next) {
-					ath_rate_statistics(sc, tmpvap->iv_bss);/* NB: no reference */
-				}
-			} else
-			            ieee80211_iterate_nodes(&ic->ic_sta, ath_rate_statistics, sc);
-		}
-
-		if (ic->ic_opmode == IEEE80211_M_STA)
-			interval = ath_timer_interval >> 1;
-
-		timer  = &(ssc->timer);
-		if (timer == NULL)
-			DPRINTF(sc, ATH_DEBUG_RATE, "%s: timer is null - leave it\n", __func__);
-
-		timer->expires = jiffies + ((HZ * interval) / 1000);
-		add_timer(timer);
-}
 
 static void
-ath_rate_statistics(void *arg, struct ieee80211_node *ni)
+ath_rate_statistics(struct ieee80211_node *ni)
 {
-		struct ath_node *an = (struct ath_node *) ni;
+		struct ath_node *an = ATH_NODE(ni);
 		struct ieee80211_rateset *rs = &ni->ni_rates;
 		struct minstrel_node *rn = ATH_NODE_MINSTREL(an);
 		unsigned int i;
@@ -786,15 +746,8 @@ ath_rate_attach(struct ath_softc *sc)
 		osc->arc.arc_space = sizeof(struct minstrel_node);
 		osc->arc.arc_vap_space = 0;
 
-		osc->close_timer_now = 0;
-		init_timer(&osc->timer);
  	osc->sc          = sc;
 		osc->sc_dev      = sc->sc_dev;
-		osc->timer.function = ath_timer_function;
-		osc->timer.data = (unsigned long)osc;
-
-		osc->timer.expires = jiffies + HZ;
-		add_timer(&osc->timer);
 
 		return &osc->arc;
 }
@@ -803,8 +756,6 @@ static void
 ath_rate_detach(struct ath_ratectrl *arc)
 {
  	struct minstrel_softc *osc = (struct minstrel_softc *) arc;
-		osc->close_timer_now = 1;
-		del_timer(&osc->timer);
 		kfree(osc);
 		_MOD_DEC_USE(THIS_MODULE);
 }
--- a/ath_rate/minstrel/minstrel.h
+++ b/ath_rate/minstrel/minstrel.h
@@ -167,6 +167,8 @@ struct minstrel_node {
 	       packet, or a packet at an optimal rate.*/
 	int random_n;
 	int a, b;          /**Coefficients of the random thing */
+
+	unsigned long last_update;
 };