madwifi: patch for 'fixing' stuck beacons through card recalibration

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@7960 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/madwifi/patches/306-bstuck_calibrate.patch b/package/madwifi/patches/306-bstuck_calibrate.patch
new file mode 100644 (file)
index 0000000..b498aa0
--- /dev/null
+++ b/package/madwifi/patches/306-bstuck_calibrate.patch
@@ -0,0 +1,102 @@
+Index: madwifi-ng-r2568-20070710/ath/if_ath.c
+===================================================================
+--- madwifi-ng-r2568-20070710.orig/ath/if_ath.c        2007-07-13 11:14:06.322980052 +0200
++++ madwifi-ng-r2568-20070710/ath/if_ath.c     2007-07-13 11:15:00.834086460 +0200
+@@ -153,6 +153,7 @@
+ static void ath_turbo_switch_mode(unsigned long);
+ static int ath_check_beacon_done(struct ath_softc *);
+ #endif
++static void ath_do_calibrate(struct net_device *);
+ static void ath_beacon_send(struct ath_softc *, int *);
+ static void ath_beacon_start_adhoc(struct ath_softc *, struct ieee80211vap *);
+ static void ath_beacon_return(struct ath_softc *, struct ath_buf *);
+@@ -4173,7 +4174,7 @@
+               DPRINTF(sc, ATH_DEBUG_BEACON_PROC,
+                       "%s: missed %u consecutive beacons\n",
+                       __func__, sc->sc_bmisscount);
+-              if (sc->sc_bmisscount > BSTUCK_THRESH)
++              if (sc->sc_bmisscount > BSTUCK_CALIBR_THR)
+                       ATH_SCHEDULE_TQUEUE(&sc->sc_bstucktq, needmark);
+               return;
+       }
+@@ -4312,8 +4313,17 @@
+        *     check will be true, in which case return 
+        *     without resetting the driver.
+        */
+-      if (sc->sc_bmisscount <= BSTUCK_THRESH)
++      if (sc->sc_bmisscount <= BSTUCK_CALIBR_THR)
+               return;
++
++      if (sc->sc_bmisscount <= BSTUCK_RESET_THR) {
++              ATH_LOCK(sc);
++              ath_do_calibrate(dev);
++              mod_timer(&sc->sc_cal_ch, jiffies + (ath_calinterval * HZ));
++              ATH_UNLOCK(sc);
++              return;
++      }
++
+       printk("%s: stuck beacon; resetting (bmiss count %u)\n",
+               DEV_NAME(dev), sc->sc_bmisscount);
+       ath_reset(dev);
+@@ -8027,17 +8037,13 @@
+  * Periodically recalibrate the PHY to account
+  * for temperature/environment changes.
+  */
+-static void
+-ath_calibrate(unsigned long arg)
++static void ath_do_calibrate(struct net_device *dev)
+ {
+-      struct net_device *dev = (struct net_device *) arg;
+       struct ath_softc *sc = dev->priv;
+       struct ath_hal *ah = sc->sc_ah;
+-      /* u_int32_t nchans; */
+       HAL_BOOL isIQdone = AH_FALSE;
+ 
+       sc->sc_stats.ast_per_cal++;
+-
+       DPRINTF(sc, ATH_DEBUG_CALIBRATE, "%s: channel %u/%x\n",
+               __func__, sc->sc_curchan.channel, sc->sc_curchan.channelFlags);
+ 
+@@ -8055,15 +8061,26 @@
+                       __func__, sc->sc_curchan.channel);
+               sc->sc_stats.ast_per_calfail++;
+       }
+-
+-      ath_hal_process_noisefloor(ah);
+       if (isIQdone == AH_TRUE)
+               ath_calinterval = ATH_LONG_CALINTERVAL;
+       else
+               ath_calinterval = ATH_SHORT_CALINTERVAL;
++}
++
++static void
++ath_calibrate(unsigned long arg)
++{
++      struct net_device *dev = (struct net_device *) arg;
++      struct ath_softc *sc = dev->priv;
++      struct ath_hal *ah = sc->sc_ah;
++
++      ATH_LOCK(sc);
++      ath_do_calibrate(dev);
++      ath_hal_process_noisefloor(ah);
+ 
+       sc->sc_cal_ch.expires = jiffies + (ath_calinterval * HZ);
+       add_timer(&sc->sc_cal_ch);
++      ATH_UNLOCK(sc);
+ }
+ 
+ static void
+Index: madwifi-ng-r2568-20070710/ath/if_athvar.h
+===================================================================
+--- madwifi-ng-r2568-20070710.orig/ath/if_athvar.h     2007-07-13 11:14:06.274977315 +0200
++++ madwifi-ng-r2568-20070710/ath/if_athvar.h  2007-07-13 11:14:06.522991448 +0200
+@@ -538,7 +538,8 @@
+  */
+ #define ATH_TXQ_MOVE_Q(_tqs,_tqd)  ATH_TXQ_MOVE_MCASTQ(_tqs,_tqd)
+ 
+-#define       BSTUCK_THRESH   10      /* # of stuck beacons before resetting NB: this is a guess*/
++#define       BSTUCK_CALIBR_THR       3       /* # of stuck beacons before restarting calibration */
++#define       BSTUCK_RESET_THR        10      /* # of stuck beacons before resetting NB: this is a guess*/
+ 
+ struct ath_softc {
+       struct ieee80211com sc_ic;              /* NB: must be first */