From cb17bac6f8d3eb4725b903b53d27fec58145392b Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Wed, 20 Feb 2008 21:26:29 +0000
Subject: [PATCH] improve reliability of beacon transmissions after channel
change
SVN-Revision: 10512
---
.../madwifi/patches/332-reset_beacons.patch | 68 +++++++++++++++++++
1 file changed, 68 insertions(+)
create mode 100644 package/madwifi/patches/332-reset_beacons.patch
diff --git a/package/madwifi/patches/332-reset_beacons.patch b/package/madwifi/patches/332-reset_beacons.patch
new file mode 100644
index 0000000000..e34746ee6a
--- /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",
--
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