madwifi: don't poll the channel noise in a performance critical path

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@9454 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/madwifi/patches/310-noise_get.patch b/package/madwifi/patches/310-noise_get.patch
new file mode 100644 (file)
index 0000000..2dcfe35
--- /dev/null
+++ b/package/madwifi/patches/310-noise_get.patch
@@ -0,0 +1,44 @@
+Index: madwifi-ng-r2756-20071018/ath/if_ath.c
+===================================================================
+--- madwifi-ng-r2756-20071018.orig/ath/if_ath.c        2007-10-27 19:20:14.495461544 +0200
++++ madwifi-ng-r2756-20071018/ath/if_ath.c     2007-10-27 19:22:02.865637202 +0200
+@@ -1417,7 +1417,6 @@
+        * Wireshark and Kismet.
+        */
+       hw_tsf = ath_hal_gettsf64(ah);
+-      ic->ic_channoise = ath_hal_get_channel_noise(ah, &(sc->sc_curchan));
+ 
+       ATH_RXBUF_LOCK_IRQ(sc);
+       if (sc->sc_rxbufcur == NULL)
+@@ -8174,6 +8173,7 @@
+       struct net_device *dev = (struct net_device *) arg;
+       struct ath_softc *sc = dev->priv;
+       struct ath_hal *ah = sc->sc_ah;
++      struct ieee80211com *ic = &sc->sc_ic;
+       /* u_int32_t nchans; */
+       HAL_BOOL isIQdone = AH_FALSE;
+ 
+@@ -8202,6 +8202,7 @@
+               ath_calinterval = ATH_LONG_CALINTERVAL;
+       else
+               ath_calinterval = ATH_SHORT_CALINTERVAL;
++      ic->ic_channoise = ath_hal_get_channel_noise(ah, &(sc->sc_curchan));
+ 
+       sc->sc_cal_ch.expires = jiffies + (ath_calinterval * HZ);
+       add_timer(&sc->sc_cal_ch);
+@@ -8252,6 +8253,7 @@
+       struct ath_softc *sc = dev->priv;
+ 
+       (void) ath_chan_set(sc, ic->ic_curchan);
++      ic->ic_channoise = ath_hal_get_channel_noise(ah, &(sc->sc_curchan));
+       /*
+        * If we are returning to our bss channel then mark state
+        * so the next recv'd beacon's TSF will be used to sync the
+@@ -8466,6 +8468,7 @@
+               }
+ 
+               ath_hal_process_noisefloor(ah);
++              ic->ic_channoise = ath_hal_get_channel_noise(ah, &(sc->sc_curchan));
+               /*
+                * Configure the beacon and sleep timers.
+                */