1 files changed, 23 insertions, 386 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2x00dev.c b/drivers/net/wireless/rt2x00/rt2x00dev.c
index 87c0f2c83077..e1b40545a9be 100644
--- a/drivers/net/wireless/rt2x00/rt2x00dev.c
+++ b/drivers/net/wireless/rt2x00/rt2x00dev.c
@@ -1,5 +1,5 @@
 /*
-        Copyright (C) 2004 - 2008 rt2x00 SourceForge Project
+        Copyright (C) 2004 - 2009 rt2x00 SourceForge Project
         <http://rt2x00.serialmonkey.com>
 
         This program is free software; you can redistribute it and/or modify
@@ -30,60 +30,6 @@
 #include "rt2x00lib.h"
 
 /*
- * Link tuning handlers
- */
-void rt2x00lib_reset_link_tuner(struct rt2x00_dev *rt2x00dev)
-{
-        if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
-                return;
-
-        /*
-         * Reset link information.
-         * Both the currently active vgc level as well as
-         * the link tuner counter should be reset. Resetting
-         * the counter is important for devices where the
-         * device should only perform link tuning during the
-         * first minute after being enabled.
-         */
-        rt2x00dev->link.count = 0;
-        rt2x00dev->link.vgc_level = 0;
-
-        /*
-         * Reset the link tuner.
-         */
-        rt2x00dev->ops->lib->reset_tuner(rt2x00dev);
-}
-
-static void rt2x00lib_start_link_tuner(struct rt2x00_dev *rt2x00dev)
-{
-        /*
-         * Clear all (possibly) pre-existing quality statistics.
-         */
-        memset(&rt2x00dev->link.qual, 0, sizeof(rt2x00dev->link.qual));
-
-        /*
-         * The RX and TX percentage should start at 50%
-         * this will assure we will get at least get some
-         * decent value when the link tuner starts.
-         * The value will be dropped and overwritten with
-         * the correct (measured )value anyway during the
-         * first run of the link tuner.
-         */
-        rt2x00dev->link.qual.rx_percentage = 50;
-        rt2x00dev->link.qual.tx_percentage = 50;
-
-        rt2x00lib_reset_link_tuner(rt2x00dev);
-
-        queue_delayed_work(rt2x00dev->hw->workqueue,
-                           &rt2x00dev->link.work, LINK_TUNE_INTERVAL);
-}
-
-static void rt2x00lib_stop_link_tuner(struct rt2x00_dev *rt2x00dev)
-{
-        cancel_delayed_work_sync(&rt2x00dev->link.work);
-}
-
-/*
  * Radio control handlers.
  */
 int rt2x00lib_enable_radio(struct rt2x00_dev *rt2x00dev)
@@ -161,238 +107,15 @@ void rt2x00lib_toggle_rx(struct rt2x00_dev *rt2x00dev, enum dev_state state)
          * When we are disabling the RX, we should also stop the link tuner.
          */
         if (state == STATE_RADIO_RX_OFF)
-                rt2x00lib_stop_link_tuner(rt2x00dev);
+                rt2x00link_stop_tuner(rt2x00dev);
 
         rt2x00dev->ops->lib->set_device_state(rt2x00dev, state);
 
         /*
          * When we are enabling the RX, we should also start the link tuner.
          */
-        if (state == STATE_RADIO_RX_ON &&
-            (rt2x00dev->intf_ap_count || rt2x00dev->intf_sta_count))
-                rt2x00lib_start_link_tuner(rt2x00dev);
-}
-
-static void rt2x00lib_evaluate_antenna_sample(struct rt2x00_dev *rt2x00dev)
-{
-        struct antenna_setup ant;
-        int sample_a =
-            rt2x00_get_link_ant_rssi_history(&rt2x00dev->link, ANTENNA_A);
-        int sample_b =
-            rt2x00_get_link_ant_rssi_history(&rt2x00dev->link, ANTENNA_B);
-
-        memcpy(&ant, &rt2x00dev->link.ant.active, sizeof(ant));
-
-        /*
-         * We are done sampling. Now we should evaluate the results.
-         */
-        rt2x00dev->link.ant.flags &= ~ANTENNA_MODE_SAMPLE;
-
-        /*
-         * During the last period we have sampled the RSSI
-         * from both antenna's. It now is time to determine
-         * which antenna demonstrated the best performance.
-         * When we are already on the antenna with the best
-         * performance, then there really is nothing for us
-         * left to do.
-         */
-        if (sample_a == sample_b)
-                return;
-
-        if (rt2x00dev->link.ant.flags & ANTENNA_RX_DIVERSITY)
-                ant.rx = (sample_a > sample_b) ? ANTENNA_A : ANTENNA_B;
-
-        if (rt2x00dev->link.ant.flags & ANTENNA_TX_DIVERSITY)
-                ant.tx = (sample_a > sample_b) ? ANTENNA_A : ANTENNA_B;
-
-        rt2x00lib_config_antenna(rt2x00dev, &ant);
-}
-
-static void rt2x00lib_evaluate_antenna_eval(struct rt2x00_dev *rt2x00dev)
-{
-        struct antenna_setup ant;
-        int rssi_curr = rt2x00_get_link_ant_rssi(&rt2x00dev->link);
-        int rssi_old = rt2x00_update_ant_rssi(&rt2x00dev->link, rssi_curr);
-
-        memcpy(&ant, &rt2x00dev->link.ant.active, sizeof(ant));
-
-        /*
-         * Legacy driver indicates that we should swap antenna's
-         * when the difference in RSSI is greater that 5. This
-         * also should be done when the RSSI was actually better
-         * then the previous sample.
-         * When the difference exceeds the threshold we should
-         * sample the rssi from the other antenna to make a valid
-         * comparison between the 2 antennas.
-         */
-        if (abs(rssi_curr - rssi_old) < 5)
-                return;
-
-        rt2x00dev->link.ant.flags |= ANTENNA_MODE_SAMPLE;
-
-        if (rt2x00dev->link.ant.flags & ANTENNA_RX_DIVERSITY)
-                ant.rx = (ant.rx == ANTENNA_A) ? ANTENNA_B : ANTENNA_A;
-
-        if (rt2x00dev->link.ant.flags & ANTENNA_TX_DIVERSITY)
-                ant.tx = (ant.tx == ANTENNA_A) ? ANTENNA_B : ANTENNA_A;
-
-        rt2x00lib_config_antenna(rt2x00dev, &ant);
-}
-
-static void rt2x00lib_evaluate_antenna(struct rt2x00_dev *rt2x00dev)
-{
-        /*
-         * Determine if software diversity is enabled for
-         * either the TX or RX antenna (or both).
-         * Always perform this check since within the link
-         * tuner interval the configuration might have changed.
-         */
-        rt2x00dev->link.ant.flags &= ~ANTENNA_RX_DIVERSITY;
-        rt2x00dev->link.ant.flags &= ~ANTENNA_TX_DIVERSITY;
-
-        if (rt2x00dev->default_ant.rx == ANTENNA_SW_DIVERSITY)
-                rt2x00dev->link.ant.flags |= ANTENNA_RX_DIVERSITY;
-        if (rt2x00dev->default_ant.tx == ANTENNA_SW_DIVERSITY)
-                rt2x00dev->link.ant.flags |= ANTENNA_TX_DIVERSITY;
-
-        if (!(rt2x00dev->link.ant.flags & ANTENNA_RX_DIVERSITY) &&
-            !(rt2x00dev->link.ant.flags & ANTENNA_TX_DIVERSITY)) {
-                rt2x00dev->link.ant.flags = 0;
-                return;
-        }
-
-        /*
-         * If we have only sampled the data over the last period
-         * we should now harvest the data. Otherwise just evaluate
-         * the data. The latter should only be performed once
-         * every 2 seconds.
-         */
-        if (rt2x00dev->link.ant.flags & ANTENNA_MODE_SAMPLE)
-                rt2x00lib_evaluate_antenna_sample(rt2x00dev);
-        else if (rt2x00dev->link.count & 1)
-                rt2x00lib_evaluate_antenna_eval(rt2x00dev);
-}
-
-static void rt2x00lib_update_link_stats(struct link *link, int rssi)
-{
-        int avg_rssi = rssi;
-
-        /*
-         * Update global RSSI
-         */
-        if (link->qual.avg_rssi)
-                avg_rssi = MOVING_AVERAGE(link->qual.avg_rssi, rssi, 8);
-        link->qual.avg_rssi = avg_rssi;
-
-        /*
-         * Update antenna RSSI
-         */
-        if (link->ant.rssi_ant)
-                rssi = MOVING_AVERAGE(link->ant.rssi_ant, rssi, 8);
-        link->ant.rssi_ant = rssi;
-}
-
-static void rt2x00lib_precalculate_link_signal(struct link_qual *qual)
-{
-        if (qual->rx_failed || qual->rx_success)
-                qual->rx_percentage =
-                    (qual->rx_success * 100) /
-                    (qual->rx_failed + qual->rx_success);
-        else
-                qual->rx_percentage = 50;
-
-        if (qual->tx_failed || qual->tx_success)
-                qual->tx_percentage =
-                    (qual->tx_success * 100) /
-                    (qual->tx_failed + qual->tx_success);
-        else
-                qual->tx_percentage = 50;
-
-        qual->rx_success = 0;
-        qual->rx_failed = 0;
-        qual->tx_success = 0;
-        qual->tx_failed = 0;
-}
-
-static int rt2x00lib_calculate_link_signal(struct rt2x00_dev *rt2x00dev,
-                                           int rssi)
-{
-        int rssi_percentage = 0;
-        int signal;
-
-        /*
-         * We need a positive value for the RSSI.
-         */
-        if (rssi < 0)
-                rssi += rt2x00dev->rssi_offset;
-
-        /*
-         * Calculate the different percentages,
-         * which will be used for the signal.
-         */
-        if (rt2x00dev->rssi_offset)
-                rssi_percentage = (rssi * 100) / rt2x00dev->rssi_offset;
-
-        /*
-         * Add the individual percentages and use the WEIGHT
-         * defines to calculate the current link signal.
-         */
-        signal = ((WEIGHT_RSSI * rssi_percentage) +
-                  (WEIGHT_TX * rt2x00dev->link.qual.tx_percentage) +
-                  (WEIGHT_RX * rt2x00dev->link.qual.rx_percentage)) / 100;
-
-        return (signal > 100) ? 100 : signal;
-}
-
-static void rt2x00lib_link_tuner(struct work_struct *work)
-{
-        struct rt2x00_dev *rt2x00dev =
-            container_of(work, struct rt2x00_dev, link.work.work);
-
-        /*
-         * When the radio is shutting down we should
-         * immediately cease all link tuning.
-         */
-        if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
-                return;
-
-        /*
-         * Update statistics.
-         */
-        rt2x00dev->ops->lib->link_stats(rt2x00dev, &rt2x00dev->link.qual);
-        rt2x00dev->low_level_stats.dot11FCSErrorCount +=
-            rt2x00dev->link.qual.rx_failed;
-
-        /*
-         * Only perform the link tuning when Link tuning
-         * has been enabled (This could have been disabled from the EEPROM).
-         */
-        if (!test_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags))
-                rt2x00dev->ops->lib->link_tuner(rt2x00dev);
-
-        /*
-         * Precalculate a portion of the link signal which is
-         * in based on the tx/rx success/failure counters.
-         */
-        rt2x00lib_precalculate_link_signal(&rt2x00dev->link.qual);
-
-        /*
-         * Send a signal to the led to update the led signal strength.
-         */
-        rt2x00leds_led_quality(rt2x00dev, rt2x00dev->link.qual.avg_rssi);
-
-        /*
-         * Evaluate antenna setup, make this the last step since this could
-         * possibly reset some statistics.
-         */
-        rt2x00lib_evaluate_antenna(rt2x00dev);
-
-        /*
-         * Increase tuner counter, and reschedule the next link tuner run.
-         */
-        rt2x00dev->link.count++;
-        queue_delayed_work(rt2x00dev->hw->workqueue,
-                           &rt2x00dev->link.work, LINK_TUNE_INTERVAL);
+        if (state == STATE_RADIO_RX_ON)
+                rt2x00link_start_tuner(rt2x00dev);
 }
 
 static void rt2x00lib_packetfilter_scheduled(struct work_struct *work)
@@ -467,7 +190,9 @@ static void rt2x00lib_beacondone_iter(void *data, u8 *mac,
         struct rt2x00_intf *intf = vif_to_intf(vif);
 
         if (vif->type != NL80211_IFTYPE_AP &&
-            vif->type != NL80211_IFTYPE_ADHOC)
+            vif->type != NL80211_IFTYPE_ADHOC &&
+            vif->type != NL80211_IFTYPE_MESH_POINT &&
+            vif->type != NL80211_IFTYPE_WDS)
                 return;
 
         /*
@@ -597,7 +322,6 @@ void rt2x00lib_rxdone(struct rt2x00_dev *rt2x00dev,
         struct sk_buff *skb;
         struct ieee80211_rx_status *rx_status = &rt2x00dev->rx_status;
         struct ieee80211_supported_band *sband;
-        struct ieee80211_hdr *hdr;
         const struct rt2x00_rate *rate;
         unsigned int header_length;
         unsigned int align;
@@ -668,30 +392,22 @@ void rt2x00lib_rxdone(struct rt2x00_dev *rt2x00dev,
 
         if (idx < 0) {
                 WARNING(rt2x00dev, "Frame received with unrecognized signal,"
-                        "signal=0x%.2x, plcp=%d.\n", rxdesc.signal,
-                        !!(rxdesc.dev_flags & RXDONE_SIGNAL_PLCP));
+                        "signal=0x%.2x, type=%d.\n", rxdesc.signal,
+                        (rxdesc.dev_flags & RXDONE_SIGNAL_MASK));
                 idx = 0;
         }
 
         /*
-         * Only update link status if this is a beacon frame carrying our bssid.
+         * Update extra components
          */
-        hdr = (struct ieee80211_hdr *)entry->skb->data;
-        if (ieee80211_is_beacon(hdr->frame_control) &&
-            (rxdesc.dev_flags & RXDONE_MY_BSS))
-                rt2x00lib_update_link_stats(&rt2x00dev->link, rxdesc.rssi);
-
-        rt2x00debug_update_crypto(rt2x00dev,
-                                  rxdesc.cipher,
-                                  rxdesc.cipher_status);
-
-        rt2x00dev->link.qual.rx_success++;
+        rt2x00link_update_stats(rt2x00dev, entry->skb, &rxdesc);
+        rt2x00debug_update_crypto(rt2x00dev, &rxdesc);
 
         rx_status->mactime = rxdesc.timestamp;
         rx_status->rate_idx = idx;
-        rx_status->qual =
-            rt2x00lib_calculate_link_signal(rt2x00dev, rxdesc.rssi);
+        rx_status->qual = rt2x00link_calculate_signal(rt2x00dev, rxdesc.rssi);
         rx_status->signal = rxdesc.rssi;
+        rx_status->noise = rxdesc.noise;
         rx_status->flag = rxdesc.flags;
         rx_status->antenna = rt2x00dev->link.ant.active.rx;
 
@@ -1067,7 +783,9 @@ int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev)
         if (rt2x00dev->ops->bcn->entry_num > 0)
                 rt2x00dev->hw->wiphy->interface_modes |=
                     BIT(NL80211_IFTYPE_ADHOC) |
-                    BIT(NL80211_IFTYPE_AP);
+                    BIT(NL80211_IFTYPE_AP) |
+                    BIT(NL80211_IFTYPE_MESH_POINT) |
+                    BIT(NL80211_IFTYPE_WDS);
 
         /*
          * Let the driver probe the device to detect the capabilities.
@@ -1083,7 +801,6 @@ int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev)
          */
         INIT_WORK(&rt2x00dev->intf_work, rt2x00lib_intf_scheduled);
         INIT_WORK(&rt2x00dev->filter_work, rt2x00lib_packetfilter_scheduled);
-        INIT_DELAYED_WORK(&rt2x00dev->link.work, rt2x00lib_link_tuner);
 
         /*
          * Allocate queue array.
@@ -1104,6 +821,7 @@ int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev)
         /*
          * Register extra components.
          */
+        rt2x00link_register(rt2x00dev);
         rt2x00leds_register(rt2x00dev);
         rt2x00rfkill_allocate(rt2x00dev);
         rt2x00debug_register(rt2x00dev);
@@ -1163,23 +881,17 @@ EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev);
 #ifdef CONFIG_PM
 int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state)
 {
-        int retval;
-
         NOTICE(rt2x00dev, "Going to sleep.\n");
 
         /*
-         * Only continue if mac80211 has open interfaces.
+         * Prevent mac80211 from accessing driver while suspended.
          */
-        if (!test_and_clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) ||
-            !test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags))
-                goto exit;
-
-        set_bit(DEVICE_STATE_STARTED_SUSPEND, &rt2x00dev->flags);
+        if (!test_and_clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
+                return 0;
 
         /*
-         * Disable radio.
+         * Cleanup as much as possible.
          */
-        rt2x00lib_stop(rt2x00dev);
         rt2x00lib_uninitialize(rt2x00dev);
 
         /*
@@ -1188,7 +900,6 @@ int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state)
         rt2x00leds_suspend(rt2x00dev);
         rt2x00debug_deregister(rt2x00dev);
 
-exit:
         /*
          * Set device mode to sleep for power management,
          * on some hardware this call seems to consistently fail.
@@ -1200,8 +911,7 @@ exit:
          * the radio and the other components already disabled the
          * device is as good as disabled.
          */
-        retval = rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_SLEEP);
-        if (retval)
+        if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_SLEEP))
                 WARNING(rt2x00dev, "Device failed to enter sleep state, "
                         "continue suspending.\n");
 
@@ -1209,32 +919,8 @@ exit:
 }
 EXPORT_SYMBOL_GPL(rt2x00lib_suspend);
 
-static void rt2x00lib_resume_intf(void *data, u8 *mac,
-                                  struct ieee80211_vif *vif)
-{
-        struct rt2x00_dev *rt2x00dev = data;
-        struct rt2x00_intf *intf = vif_to_intf(vif);
-
-        spin_lock(&intf->lock);
-
-        rt2x00lib_config_intf(rt2x00dev, intf,
-                              vif->type, intf->mac, intf->bssid);
-
-
-        /*
-         * Master or Ad-hoc mode require a new beacon update.
-         */
-        if (vif->type == NL80211_IFTYPE_AP ||
-            vif->type == NL80211_IFTYPE_ADHOC)
-                intf->delayed_flags |= DELAYED_UPDATE_BEACON;
-
-        spin_unlock(&intf->lock);
-}
-
 int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev)
 {
-        int retval;
-
         NOTICE(rt2x00dev, "Waking up.\n");
 
         /*
@@ -1244,60 +930,11 @@ int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev)
         rt2x00leds_resume(rt2x00dev);
 
         /*
-         * Only continue if mac80211 had open interfaces.
-         */
-        if (!test_and_clear_bit(DEVICE_STATE_STARTED_SUSPEND, &rt2x00dev->flags))
-                return 0;
-
-        /*
-         * Reinitialize device and all active interfaces.
-         */
-        retval = rt2x00lib_start(rt2x00dev);
-        if (retval)
-                goto exit;
-
-        /*
-         * Reconfigure device.
-         */
-        retval = rt2x00mac_config(rt2x00dev->hw, ~0);
-        if (retval)
-                goto exit;
-
-        /*
-         * Iterator over each active interface to
-         * reconfigure the hardware.
-         */
-        ieee80211_iterate_active_interfaces(rt2x00dev->hw,
-                                            rt2x00lib_resume_intf, rt2x00dev);
-
-        /*
          * We are ready again to receive requests from mac80211.
          */
         set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags);
 
-        /*
-         * It is possible that during that mac80211 has attempted
-         * to send frames while we were suspending or resuming.
-         * In that case we have disabled the TX queue and should
-         * now enable it again
-         */
-        ieee80211_wake_queues(rt2x00dev->hw);
-
-        /*
-         * During interface iteration we might have changed the
-         * delayed_flags, time to handles the event by calling
-         * the work handler directly.
-         */
-        rt2x00lib_intf_scheduled(&rt2x00dev->intf_work);
-
         return 0;
-
-exit:
-        rt2x00lib_stop(rt2x00dev);
-        rt2x00lib_uninitialize(rt2x00dev);
-        rt2x00debug_deregister(rt2x00dev);
-
-        return retval;
 }
 EXPORT_SYMBOL_GPL(rt2x00lib_resume);
 #endif /* CONFIG_PM */