improve reliability of beacon transmissions after channel change

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@10512 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/madwifi/patches/332-reset_beacons.patch b/package/madwifi/patches/332-reset_beacons.patch
new file mode 100644 (file)
index 0000000..e34746e
--- /dev/null
+++ b/package/madwifi/patches/332-reset_beacons.patch
@@ -0,0 +1,68 @@
+Index: madwifi-trunk-r3314/ath/if_ath.c
+===================================================================
+--- madwifi-trunk-r3314.orig/ath/if_ath.c      2008-02-20 22:22:50.203268987 +0100
++++ madwifi-trunk-r3314/ath/if_ath.c   2008-02-20 22:23:25.745294410 +0100
+@@ -1592,6 +1592,16 @@
+       ath_init(dev);
+ }
+ 
++static HAL_BOOL ath_hw_reset(struct ath_hal *ah, HAL_OPMODE opmode,
++                                   HAL_CHANNEL *channel, HAL_BOOL bChannelChange,
++                                   HAL_STATUS *status)
++{
++      HAL_BOOL ret;
++      ret = ath_hal_reset(ah, opmode, channel, bChannelChange, status);
++      mdelay(5); /* extra delay to allow the hw to settle in */
++      return ret;
++}
++
+ /* Channel Availability Check is running, or a channel has already found to be 
+  * unavailable. */
+ static int
+@@ -2474,7 +2484,7 @@
+        */
+       sc->sc_curchan.channel = ic->ic_curchan->ic_freq;
+       sc->sc_curchan.channelFlags = ath_chan2flags(ic->ic_curchan);
+-      if (!ath_hal_reset(ah, sc->sc_opmode, &sc->sc_curchan, AH_FALSE, &status)) {
++      if (!ath_hw_reset(ah, sc->sc_opmode, &sc->sc_curchan, AH_FALSE, &status)) {
+               EPRINTF(sc, "unable to reset hardware: '%s' (HAL status %u) "
+                       "(freq %u flags 0x%x)\n", 
+                       ath_get_hal_status_desc(status), status,
+@@ -2773,7 +2783,7 @@
+       ath_draintxq(sc);               /* stop xmit side */
+       ath_stoprecv(sc);               /* stop recv side */
+       /* NB: indicate channel change so we do a full reset */
+-      if (!ath_hal_reset(ah, sc->sc_opmode, &sc->sc_curchan, AH_TRUE, &status))
++      if (!ath_hw_reset(ah, sc->sc_opmode, &sc->sc_curchan, AH_TRUE, &status))
+               EPRINTF(sc, "Unable to reset hardware: '%s' (HAL status %u)\n",
+                       ath_get_hal_status_desc(status), status);
+ 
+@@ -8848,8 +8858,8 @@
+                * needed to do the reset with chanchange = AH_FALSE in order
+                * to receive traffic when peforming high velocity channel
+                * changes. */
+-              if (!ath_hal_reset(ah, sc->sc_opmode, &hchan, AH_TRUE, &status)   ||
+-                  !ath_hal_reset(ah, sc->sc_opmode, &hchan, AH_FALSE, &status)) {
++              if (!ath_hw_reset(ah, sc->sc_opmode, &hchan, AH_TRUE, &status)   ||
++                  !ath_hw_reset(ah, sc->sc_opmode, &hchan, AH_FALSE, &status)) {
+                       EPRINTF(sc, "Unable to reset channel %u (%u MHz) "
+                               "flags 0x%x '%s' (HAL status %u)\n",
+                               ieee80211_chan2ieee(ic, chan), chan->ic_freq,
+@@ -8905,7 +8915,7 @@
+                * re configure beacons when it is a turbo mode switch.
+                * HW seems to turn off beacons during turbo mode switch.
+                */
+-              if (sc->sc_beacons && tswitch && !sc->sc_dfs_cac)
++              if (sc->sc_beacons && !sc->sc_dfs_cac)
+                       ath_beacon_config(sc, NULL);
+               /*
+                * Re-enable interrupts.
+@@ -11455,7 +11465,7 @@
+               ieee80211_cancel_scan(vap);     /* anything current */
+               ieee80211_wme_updateparams(vap);
+               /*  reset the WNIC */
+-              if (!ath_hal_reset(ah, sc->sc_opmode, 
++              if (!ath_hw_reset(ah, sc->sc_opmode,
+                                       &sc->sc_curchan, AH_TRUE, &status)) {
+                       EPRINTF(sc, "ath_hal_reset failed: '%s' "
+                                       "(HAL status %u).\n",