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git://projects.qi-hardware.com/openwrt-xburst.git
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ath9k: fix short slot vs long slot handling, implement support for setting the coverage class
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@19141 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd
parent
67599df0cb
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128fd665e5
11
package/mac80211/patches/540-short_slot_handling.patch
Normal file
11
package/mac80211/patches/540-short_slot_handling.patch
Normal file
@ -0,0 +1,11 @@
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--- a/net/mac80211/mlme.c
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+++ b/net/mac80211/mlme.c
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@@ -670,6 +670,8 @@ static u32 ieee80211_handle_bss_capabili
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}
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use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME);
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+ if (sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ)
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+ use_short_slot = true;
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if (use_protection != bss_conf->use_cts_prot) {
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bss_conf->use_cts_prot = use_protection;
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@ -0,0 +1,229 @@
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--- a/drivers/net/wireless/ath/ath9k/main.c
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+++ b/drivers/net/wireless/ath/ath9k/main.c
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@@ -1790,6 +1790,7 @@ static void ath9k_bss_info_changed(struc
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struct ath_hw *ah = sc->sc_ah;
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struct ath_common *common = ath9k_hw_common(ah);
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struct ath_vif *avp = (void *)vif->drv_priv;
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+ int slottime;
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int error;
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mutex_lock(&sc->mutex);
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@@ -1825,6 +1826,25 @@ static void ath9k_bss_info_changed(struc
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ath_beacon_config(sc, vif);
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}
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+ if (changed & BSS_CHANGED_ERP_SLOT) {
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+ if (bss_conf->use_short_slot)
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+ slottime = 9;
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+ else
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+ slottime = 20;
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+ if (vif->type == NL80211_IFTYPE_AP) {
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+ /*
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+ * Defer update, so that connected stations can adjust
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+ * their settings at the same time.
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+ * See beacon.c for more details
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+ */
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+ sc->beacon.slottime = slottime;
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+ sc->beacon.updateslot = UPDATE;
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+ } else {
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+ ah->slottime = slottime;
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+ ath9k_hw_init_global_settings(ah);
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+ }
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+ }
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+
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/* Disable transmission of beacons */
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if ((changed & BSS_CHANGED_BEACON_ENABLED) && !bss_conf->enable_beacon)
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ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
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--- a/drivers/net/wireless/ath/ath9k/hw.c
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+++ b/drivers/net/wireless/ath/ath9k/hw.c
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@@ -55,28 +55,6 @@ module_exit(ath9k_exit);
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/* Helper Functions */
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/********************/
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-static u32 ath9k_hw_mac_usec(struct ath_hw *ah, u32 clks)
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-{
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- struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf;
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-
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- if (!ah->curchan) /* should really check for CCK instead */
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- return clks / ATH9K_CLOCK_RATE_CCK;
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- if (conf->channel->band == IEEE80211_BAND_2GHZ)
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- return clks / ATH9K_CLOCK_RATE_2GHZ_OFDM;
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-
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- return clks / ATH9K_CLOCK_RATE_5GHZ_OFDM;
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-}
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-
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-static u32 ath9k_hw_mac_to_usec(struct ath_hw *ah, u32 clks)
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-{
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- struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf;
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-
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- if (conf_is_ht40(conf))
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- return ath9k_hw_mac_usec(ah, clks) / 2;
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- else
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- return ath9k_hw_mac_usec(ah, clks);
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-}
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-
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static u32 ath9k_hw_mac_clks(struct ath_hw *ah, u32 usecs)
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{
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struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf;
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@@ -413,8 +391,6 @@ static void ath9k_hw_init_defaults(struc
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ah->beacon_interval = 100;
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ah->enable_32kHz_clock = DONT_USE_32KHZ;
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ah->slottime = (u32) -1;
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- ah->acktimeout = (u32) -1;
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- ah->ctstimeout = (u32) -1;
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ah->globaltxtimeout = (u32) -1;
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ah->power_mode = ATH9K_PM_UNDEFINED;
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}
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@@ -1196,34 +1172,25 @@ static void ath9k_hw_init_interrupt_mask
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}
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}
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-static bool ath9k_hw_set_ack_timeout(struct ath_hw *ah, u32 us)
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+static void ath9k_hw_setslottime(struct ath_hw *ah, u32 us)
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{
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- if (us > ath9k_hw_mac_to_usec(ah, MS(0xffffffff, AR_TIME_OUT_ACK))) {
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- ath_print(ath9k_hw_common(ah), ATH_DBG_RESET,
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- "bad ack timeout %u\n", us);
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- ah->acktimeout = (u32) -1;
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- return false;
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- } else {
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- REG_RMW_FIELD(ah, AR_TIME_OUT,
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- AR_TIME_OUT_ACK, ath9k_hw_mac_to_clks(ah, us));
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- ah->acktimeout = us;
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- return true;
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- }
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+ u32 val = ath9k_hw_mac_to_clks(ah, us);
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+ val = min(val, (u32) 0xFFFF);
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+ REG_WRITE(ah, AR_D_GBL_IFS_SLOT, val);
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}
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-static bool ath9k_hw_set_cts_timeout(struct ath_hw *ah, u32 us)
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+static void ath9k_hw_set_ack_timeout(struct ath_hw *ah, u32 us)
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{
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- if (us > ath9k_hw_mac_to_usec(ah, MS(0xffffffff, AR_TIME_OUT_CTS))) {
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- ath_print(ath9k_hw_common(ah), ATH_DBG_RESET,
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- "bad cts timeout %u\n", us);
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- ah->ctstimeout = (u32) -1;
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- return false;
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- } else {
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- REG_RMW_FIELD(ah, AR_TIME_OUT,
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- AR_TIME_OUT_CTS, ath9k_hw_mac_to_clks(ah, us));
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- ah->ctstimeout = us;
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- return true;
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- }
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+ u32 val = ath9k_hw_mac_to_clks(ah, us);
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+ val = min(val, (u32) MS(0xFFFFFFFF, AR_TIME_OUT_ACK));
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+ REG_RMW_FIELD(ah, AR_TIME_OUT, AR_TIME_OUT_ACK, val);
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+}
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+
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+static void ath9k_hw_set_cts_timeout(struct ath_hw *ah, u32 us)
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+{
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+ u32 val = ath9k_hw_mac_to_clks(ah, us);
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+ val = min(val, (u32) MS(0xFFFFFFFF, AR_TIME_OUT_CTS));
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+ REG_RMW_FIELD(ah, AR_TIME_OUT, AR_TIME_OUT_CTS, val);
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}
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static bool ath9k_hw_set_global_txtimeout(struct ath_hw *ah, u32 tu)
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@@ -1240,23 +1207,32 @@ static bool ath9k_hw_set_global_txtimeou
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}
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}
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-static void ath9k_hw_init_user_settings(struct ath_hw *ah)
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+void ath9k_hw_init_global_settings(struct ath_hw *ah)
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{
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+ struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf;
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+ int acktimeout;
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+ int sifstime;
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+
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ath_print(ath9k_hw_common(ah), ATH_DBG_RESET, "ah->misc_mode 0x%x\n",
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ah->misc_mode);
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if (ah->misc_mode != 0)
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REG_WRITE(ah, AR_PCU_MISC,
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REG_READ(ah, AR_PCU_MISC) | ah->misc_mode);
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- if (ah->slottime != (u32) -1)
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- ath9k_hw_setslottime(ah, ah->slottime);
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- if (ah->acktimeout != (u32) -1)
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- ath9k_hw_set_ack_timeout(ah, ah->acktimeout);
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- if (ah->ctstimeout != (u32) -1)
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- ath9k_hw_set_cts_timeout(ah, ah->ctstimeout);
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+
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+ if (conf->channel && conf->channel->band == IEEE80211_BAND_5GHZ)
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+ sifstime = 16;
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+ else
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+ sifstime = 10;
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+
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+ acktimeout = ah->slottime + sifstime;
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+ ath9k_hw_setslottime(ah, ah->slottime);
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+ ath9k_hw_set_ack_timeout(ah, acktimeout);
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+ ath9k_hw_set_cts_timeout(ah, acktimeout);
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if (ah->globaltxtimeout != (u32) -1)
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ath9k_hw_set_global_txtimeout(ah, ah->globaltxtimeout);
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}
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+EXPORT_SYMBOL(ath9k_hw_init_global_settings);
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void ath9k_hw_deinit(struct ath_hw *ah)
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{
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@@ -2077,7 +2053,7 @@ int ath9k_hw_reset(struct ath_hw *ah, st
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if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
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ath9k_enable_rfkill(ah);
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- ath9k_hw_init_user_settings(ah);
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+ ath9k_hw_init_global_settings(ah);
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if (AR_SREV_9287_12_OR_LATER(ah)) {
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REG_WRITE(ah, AR_D_GBL_IFS_SIFS,
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@@ -3674,21 +3650,6 @@ u64 ath9k_hw_extend_tsf(struct ath_hw *a
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}
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EXPORT_SYMBOL(ath9k_hw_extend_tsf);
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-bool ath9k_hw_setslottime(struct ath_hw *ah, u32 us)
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-{
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- if (us < ATH9K_SLOT_TIME_9 || us > ath9k_hw_mac_to_usec(ah, 0xffff)) {
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- ath_print(ath9k_hw_common(ah), ATH_DBG_RESET,
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- "bad slot time %u\n", us);
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- ah->slottime = (u32) -1;
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- return false;
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- } else {
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- REG_WRITE(ah, AR_D_GBL_IFS_SLOT, ath9k_hw_mac_to_clks(ah, us));
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- ah->slottime = us;
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- return true;
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- }
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-}
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-EXPORT_SYMBOL(ath9k_hw_setslottime);
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-
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void ath9k_hw_set11nmac2040(struct ath_hw *ah)
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{
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struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf;
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--- a/drivers/net/wireless/ath/ath9k/hw.h
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+++ b/drivers/net/wireless/ath/ath9k/hw.h
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@@ -553,8 +553,6 @@ struct ath_hw {
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int16_t txpower_indexoffset;
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u32 beacon_interval;
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u32 slottime;
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- u32 acktimeout;
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- u32 ctstimeout;
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u32 globaltxtimeout;
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/* ANI */
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@@ -668,7 +666,7 @@ void ath9k_hw_settsf64(struct ath_hw *ah
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void ath9k_hw_reset_tsf(struct ath_hw *ah);
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void ath9k_hw_set_tsfadjust(struct ath_hw *ah, u32 setting);
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u64 ath9k_hw_extend_tsf(struct ath_hw *ah, u32 rstamp);
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-bool ath9k_hw_setslottime(struct ath_hw *ah, u32 us);
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+void ath9k_hw_init_global_settings(struct ath_hw *ah);
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void ath9k_hw_set11nmac2040(struct ath_hw *ah);
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void ath9k_hw_beaconinit(struct ath_hw *ah, u32 next_beacon, u32 beacon_period);
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void ath9k_hw_set_sta_beacon_timers(struct ath_hw *ah,
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--- a/drivers/net/wireless/ath/ath9k/beacon.c
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+++ b/drivers/net/wireless/ath/ath9k/beacon.c
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@@ -480,7 +480,8 @@ void ath_beacon_tasklet(unsigned long da
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sc->beacon.updateslot = COMMIT; /* commit next beacon */
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sc->beacon.slotupdate = slot;
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} else if (sc->beacon.updateslot == COMMIT && sc->beacon.slotupdate == slot) {
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- ath9k_hw_setslottime(sc->sc_ah, sc->beacon.slottime);
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+ ah->slottime = sc->beacon.slottime;
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+ ath9k_hw_init_global_settings(ah);
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sc->beacon.updateslot = OK;
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}
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if (bfaddr != 0) {
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60
package/mac80211/patches/560-ath9k_coverage_class.patch
Normal file
60
package/mac80211/patches/560-ath9k_coverage_class.patch
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@ -0,0 +1,60 @@
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--- a/drivers/net/wireless/ath/ath9k/hw.c
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+++ b/drivers/net/wireless/ath/ath9k/hw.c
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@@ -1211,6 +1211,7 @@ void ath9k_hw_init_global_settings(struc
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{
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struct ieee80211_conf *conf = &ath9k_hw_common(ah)->hw->conf;
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int acktimeout;
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+ int slottime;
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int sifstime;
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ath_print(ath9k_hw_common(ah), ATH_DBG_RESET, "ah->misc_mode 0x%x\n",
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@@ -1225,8 +1226,10 @@ void ath9k_hw_init_global_settings(struc
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else
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sifstime = 10;
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- acktimeout = ah->slottime + sifstime;
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- ath9k_hw_setslottime(ah, ah->slottime);
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+ /* As defined by IEEE 802.11-2007 17.3.8.6 */
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+ slottime = ah->slottime + 3 * ah->coverage_class;
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+ acktimeout = slottime + sifstime;
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+ ath9k_hw_setslottime(ah, slottime);
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ath9k_hw_set_ack_timeout(ah, acktimeout);
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ath9k_hw_set_cts_timeout(ah, acktimeout);
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if (ah->globaltxtimeout != (u32) -1)
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--- a/drivers/net/wireless/ath/ath9k/hw.h
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+++ b/drivers/net/wireless/ath/ath9k/hw.h
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@@ -551,6 +551,7 @@ struct ath_hw {
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u32 *bank6Temp;
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int16_t txpower_indexoffset;
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+ int coverage_class;
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u32 beacon_interval;
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u32 slottime;
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u32 globaltxtimeout;
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--- a/drivers/net/wireless/ath/ath9k/main.c
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+++ b/drivers/net/wireless/ath/ath9k/main.c
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@@ -2015,6 +2015,18 @@ static void ath9k_sw_scan_complete(struc
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mutex_unlock(&sc->mutex);
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}
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+static void ath9k_set_coverage_class(struct ieee80211_hw *hw, u8 coverage_class)
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+{
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+ struct ath_wiphy *aphy = hw->priv;
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+ struct ath_softc *sc = aphy->sc;
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+ struct ath_hw *ah = sc->sc_ah;
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+
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+ mutex_lock(&sc->mutex);
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+ ah->coverage_class = coverage_class;
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+ ath9k_hw_init_global_settings(ah);
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+ mutex_unlock(&sc->mutex);
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+}
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+
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struct ieee80211_ops ath9k_ops = {
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.tx = ath9k_tx,
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.start = ath9k_start,
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@@ -2034,4 +2046,5 @@ struct ieee80211_ops ath9k_ops = {
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.sw_scan_start = ath9k_sw_scan_start,
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.sw_scan_complete = ath9k_sw_scan_complete,
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.rfkill_poll = ath9k_rfkill_poll_state,
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+ .set_coverage_class = ath9k_set_coverage_class,
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};
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