/*
- Copyright (C) 2004 - 2008 rt2x00 SourceForge Project
+ Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
<http://rt2x00.serialmonkey.com>
This program is free software; you can redistribute it and/or modify
#include <linux/kernel.h>
#include <linux/module.h>
+#include <linux/slab.h>
#include "rt2x00.h"
#include "rt2x00lib.h"
-/*
- * Link tuning handlers
- */
-void rt2x00lib_reset_link_tuner(struct rt2x00_dev *rt2x00dev)
-{
- if (!test_bit(DEVICE_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.
*/
* Don't enable the radio twice.
* And check if the hardware button has been disabled.
*/
- if (test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags) ||
- test_bit(DEVICE_DISABLED_RADIO_HW, &rt2x00dev->flags))
+ if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
return 0;
/*
* Initialize all data queues.
*/
- rt2x00queue_init_rx(rt2x00dev);
- rt2x00queue_init_tx(rt2x00dev);
+ rt2x00queue_init_queues(rt2x00dev);
/*
* Enable radio.
rt2x00leds_led_radio(rt2x00dev, true);
rt2x00led_led_activity(rt2x00dev, true);
- __set_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags);
+ set_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags);
/*
* Enable RX.
*/
rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON);
+ /*
+ * Start watchdog monitoring.
+ */
+ rt2x00link_start_watchdog(rt2x00dev);
+
/*
* Start the TX queues.
*/
void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev)
{
- if (!__test_and_clear_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
+ if (!test_and_clear_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
return;
/*
- * Stop the TX queues.
+ * Stop the TX queues in mac80211.
*/
ieee80211_stop_queues(rt2x00dev->hw);
+ rt2x00queue_stop_queues(rt2x00dev);
+
+ /*
+ * Stop watchdog monitoring.
+ */
+ rt2x00link_stop_watchdog(rt2x00dev);
/*
* Disable RX.
* 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)
-{
- enum antenna rx = rt2x00dev->link.ant.active.rx;
- enum antenna tx = rt2x00dev->link.ant.active.tx;
- 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);
-
- /*
- * 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)
- rx = (sample_a > sample_b) ? ANTENNA_A : ANTENNA_B;
-
- if (rt2x00dev->link.ant.flags & ANTENNA_TX_DIVERSITY)
- tx = (sample_a > sample_b) ? ANTENNA_A : ANTENNA_B;
-
- rt2x00lib_config_antenna(rt2x00dev, rx, tx);
-}
-
-static void rt2x00lib_evaluate_antenna_eval(struct rt2x00_dev *rt2x00dev)
-{
- enum antenna rx = rt2x00dev->link.ant.active.rx;
- enum antenna tx = rt2x00dev->link.ant.active.tx;
- int rssi_curr = rt2x00_get_link_ant_rssi(&rt2x00dev->link);
- int rssi_old = rt2x00_update_ant_rssi(&rt2x00dev->link, rssi_curr);
-
- /*
- * 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)
- rx = (rx == ANTENNA_A) ? ANTENNA_B : ANTENNA_A;
-
- if (rt2x00dev->link.ant.flags & ANTENNA_TX_DIVERSITY)
- tx = (tx == ANTENNA_A) ? ANTENNA_B : ANTENNA_A;
-
- rt2x00lib_config_antenna(rt2x00dev, rx, tx);
-}
-
-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->hw->conf.antenna_sel_rx == 0 &&
- rt2x00dev->default_ant.rx == ANTENNA_SW_DIVERSITY)
- rt2x00dev->link.ant.flags |= ANTENNA_RX_DIVERSITY;
- if (rt2x00dev->hw->conf.antenna_sel_tx == 0 &&
- 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_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);
-}
-
-static void rt2x00lib_packetfilter_scheduled(struct work_struct *work)
-{
- struct rt2x00_dev *rt2x00dev =
- container_of(work, struct rt2x00_dev, filter_work);
-
- rt2x00dev->ops->lib->config_filter(rt2x00dev, rt2x00dev->packet_filter);
+ if (state == STATE_RADIO_RX_ON)
+ rt2x00link_start_tuner(rt2x00dev);
}
static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac,
{
struct rt2x00_dev *rt2x00dev = data;
struct rt2x00_intf *intf = vif_to_intf(vif);
- struct ieee80211_bss_conf conf;
int delayed_flags;
/*
*/
spin_lock(&intf->lock);
- memcpy(&conf, &intf->conf, sizeof(conf));
delayed_flags = intf->delayed_flags;
intf->delayed_flags = 0;
* note that in the spinlock protected area above the delayed_flags
* have been cleared correctly.
*/
- if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
+ if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
return;
if (delayed_flags & DELAYED_UPDATE_BEACON)
- rt2x00queue_update_beacon(rt2x00dev, vif);
-
- if (delayed_flags & DELAYED_CONFIG_ERP)
- rt2x00lib_config_erp(rt2x00dev, intf, &conf);
-
- if (delayed_flags & DELAYED_LED_ASSOC)
- rt2x00leds_led_assoc(rt2x00dev, !!rt2x00dev->intf_associated);
+ rt2x00queue_update_beacon(rt2x00dev, vif, true);
}
static void rt2x00lib_intf_scheduled(struct work_struct *work)
struct ieee80211_vif *vif)
{
struct rt2x00_dev *rt2x00dev = data;
- struct rt2x00_intf *intf = vif_to_intf(vif);
- if (vif->type != IEEE80211_IF_TYPE_AP &&
- vif->type != IEEE80211_IF_TYPE_IBSS)
+ if (vif->type != NL80211_IFTYPE_AP &&
+ vif->type != NL80211_IFTYPE_ADHOC &&
+ vif->type != NL80211_IFTYPE_MESH_POINT &&
+ vif->type != NL80211_IFTYPE_WDS)
return;
- /*
- * Clean up the beacon skb.
- */
- rt2x00queue_free_skb(rt2x00dev, intf->beacon->skb);
- intf->beacon->skb = NULL;
-
- spin_lock(&intf->lock);
- intf->delayed_flags |= DELAYED_UPDATE_BEACON;
- spin_unlock(&intf->lock);
+ rt2x00queue_update_beacon(rt2x00dev, vif, true);
}
void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev)
{
- if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
+ if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
return;
- ieee80211_iterate_active_interfaces_atomic(rt2x00dev->hw,
- rt2x00lib_beacondone_iter,
- rt2x00dev);
+ ieee80211_iterate_active_interfaces(rt2x00dev->hw,
+ rt2x00lib_beacondone_iter,
+ rt2x00dev);
- schedule_work(&rt2x00dev->intf_work);
}
EXPORT_SYMBOL_GPL(rt2x00lib_beacondone);
{
struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb);
+ struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
enum data_queue_qid qid = skb_get_queue_mapping(entry->skb);
+ unsigned int header_length = ieee80211_get_hdrlen_from_skb(entry->skb);
+ u8 rate_idx, rate_flags, retry_rates;
+ u8 skbdesc_flags = skbdesc->flags;
+ unsigned int i;
+ bool success;
/*
* Unmap the skb.
*/
rt2x00queue_unmap_skb(rt2x00dev, entry->skb);
+ /*
+ * Remove the extra tx headroom from the skb.
+ */
+ skb_pull(entry->skb, rt2x00dev->ops->extra_tx_headroom);
+
+ /*
+ * Signal that the TX descriptor is no longer in the skb.
+ */
+ skbdesc->flags &= ~SKBDESC_DESC_IN_SKB;
+
+ /*
+ * Remove L2 padding which was added during
+ */
+ if (test_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags))
+ rt2x00queue_remove_l2pad(entry->skb, header_length);
+
/*
* If the IV/EIV data was stripped from the frame before it was
* passed to the hardware, we should now reinsert it again because
- * mac80211 will expect the the same data to be present it the
+ * mac80211 will expect the same data to be present it the
* frame as it was passed to us.
*/
if (test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags))
- rt2x00crypto_tx_insert_iv(entry->skb);
+ rt2x00crypto_tx_insert_iv(entry->skb, header_length);
/*
* Send frame to debugfs immediately, after this call is completed
*/
rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_TXDONE, entry->skb);
+ /*
+ * Determine if the frame has been successfully transmitted.
+ */
+ success =
+ test_bit(TXDONE_SUCCESS, &txdesc->flags) ||
+ test_bit(TXDONE_UNKNOWN, &txdesc->flags);
+
/*
* Update TX statistics.
*/
- rt2x00dev->link.qual.tx_success +=
- test_bit(TXDONE_SUCCESS, &txdesc->flags);
- rt2x00dev->link.qual.tx_failed +=
- test_bit(TXDONE_FAILURE, &txdesc->flags);
+ rt2x00dev->link.qual.tx_success += success;
+ rt2x00dev->link.qual.tx_failed += !success;
+
+ rate_idx = skbdesc->tx_rate_idx;
+ rate_flags = skbdesc->tx_rate_flags;
+ retry_rates = test_bit(TXDONE_FALLBACK, &txdesc->flags) ?
+ (txdesc->retry + 1) : 1;
/*
* Initialize TX status
*/
memset(&tx_info->status, 0, sizeof(tx_info->status));
tx_info->status.ack_signal = 0;
- tx_info->status.excessive_retries =
- test_bit(TXDONE_EXCESSIVE_RETRY, &txdesc->flags);
- tx_info->status.retry_count = txdesc->retry;
+
+ /*
+ * Frame was send with retries, hardware tried
+ * different rates to send out the frame, at each
+ * retry it lowered the rate 1 step except when the
+ * lowest rate was used.
+ */
+ for (i = 0; i < retry_rates && i < IEEE80211_TX_MAX_RATES; i++) {
+ tx_info->status.rates[i].idx = rate_idx - i;
+ tx_info->status.rates[i].flags = rate_flags;
+
+ if (rate_idx - i == 0) {
+ /*
+ * The lowest rate (index 0) was used until the
+ * number of max retries was reached.
+ */
+ tx_info->status.rates[i].count = retry_rates - i;
+ i++;
+ break;
+ }
+ tx_info->status.rates[i].count = 1;
+ }
+ if (i < (IEEE80211_TX_MAX_RATES - 1))
+ tx_info->status.rates[i].idx = -1; /* terminate */
if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) {
- if (test_bit(TXDONE_SUCCESS, &txdesc->flags))
+ if (success)
tx_info->flags |= IEEE80211_TX_STAT_ACK;
- else if (test_bit(TXDONE_FAILURE, &txdesc->flags))
+ else
rt2x00dev->low_level_stats.dot11ACKFailureCount++;
}
- if (tx_info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) {
- if (test_bit(TXDONE_SUCCESS, &txdesc->flags))
+ /*
+ * Every single frame has it's own tx status, hence report
+ * every frame as ampdu of size 1.
+ *
+ * TODO: if we can find out how many frames were aggregated
+ * by the hw we could provide the real ampdu_len to mac80211
+ * which would allow the rc algorithm to better decide on
+ * which rates are suitable.
+ */
+ if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) {
+ tx_info->flags |= IEEE80211_TX_STAT_AMPDU;
+ tx_info->status.ampdu_len = 1;
+ tx_info->status.ampdu_ack_len = success ? 1 : 0;
+ }
+
+ if (rate_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
+ if (success)
rt2x00dev->low_level_stats.dot11RTSSuccessCount++;
- else if (test_bit(TXDONE_FAILURE, &txdesc->flags))
+ else
rt2x00dev->low_level_stats.dot11RTSFailureCount++;
}
/*
- * Only send the status report to mac80211 when TX status was
- * requested by it. If this was a extra frame coming through
- * a mac80211 library call (RTS/CTS) then we should not send the
- * status report back.
- */
- if (tx_info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
- ieee80211_tx_status_irqsafe(rt2x00dev->hw, entry->skb);
+ * Only send the status report to mac80211 when it's a frame
+ * that originated in mac80211. If this was a extra frame coming
+ * through a mac80211 library call (RTS/CTS) then we should not
+ * send the status report back.
+ */
+ if (!(skbdesc_flags & SKBDESC_NOT_MAC80211))
+ /*
+ * Only PCI and SOC devices process the tx status in process
+ * context. Hence use ieee80211_tx_status for PCI and SOC
+ * devices and stick to ieee80211_tx_status_irqsafe for USB.
+ */
+ if (rt2x00_is_usb(rt2x00dev))
+ ieee80211_tx_status_irqsafe(rt2x00dev->hw, entry->skb);
+ else
+ ieee80211_tx_status(rt2x00dev->hw, entry->skb);
else
- dev_kfree_skb_irq(entry->skb);
+ dev_kfree_skb_any(entry->skb);
/*
* Make this entry available for reuse.
entry->skb = NULL;
entry->flags = 0;
- rt2x00dev->ops->lib->init_txentry(rt2x00dev, entry);
+ rt2x00dev->ops->lib->clear_entry(entry);
- __clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags);
+ clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags);
rt2x00queue_index_inc(entry->queue, Q_INDEX_DONE);
/*
}
EXPORT_SYMBOL_GPL(rt2x00lib_txdone);
+static int rt2x00lib_rxdone_read_signal(struct rt2x00_dev *rt2x00dev,
+ struct rxdone_entry_desc *rxdesc)
+{
+ struct ieee80211_supported_band *sband;
+ const struct rt2x00_rate *rate;
+ unsigned int i;
+ int signal;
+ int type;
+
+ /*
+ * For non-HT rates the MCS value needs to contain the
+ * actually used rate modulation (CCK or OFDM).
+ */
+ if (rxdesc->dev_flags & RXDONE_SIGNAL_MCS)
+ signal = RATE_MCS(rxdesc->rate_mode, rxdesc->signal);
+ else
+ signal = rxdesc->signal;
+
+ type = (rxdesc->dev_flags & RXDONE_SIGNAL_MASK);
+
+ sband = &rt2x00dev->bands[rt2x00dev->curr_band];
+ for (i = 0; i < sband->n_bitrates; i++) {
+ rate = rt2x00_get_rate(sband->bitrates[i].hw_value);
+
+ if (((type == RXDONE_SIGNAL_PLCP) &&
+ (rate->plcp == signal)) ||
+ ((type == RXDONE_SIGNAL_BITRATE) &&
+ (rate->bitrate == signal)) ||
+ ((type == RXDONE_SIGNAL_MCS) &&
+ (rate->mcs == signal))) {
+ return i;
+ }
+ }
+
+ WARNING(rt2x00dev, "Frame received with unrecognized signal, "
+ "signal=0x%.4x, type=%d.\n", signal, type);
+ return 0;
+}
+
void rt2x00lib_rxdone(struct rt2x00_dev *rt2x00dev,
struct queue_entry *entry)
{
struct rxdone_entry_desc rxdesc;
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;
- unsigned int i;
- int idx = -1;
-
+ int rate_idx;
/*
* Allocate a new sk_buffer. If no new buffer available, drop the
* received frame and reuse the existing buffer.
* aligned on a 4 byte boundary.
*/
header_length = ieee80211_get_hdrlen_from_skb(entry->skb);
- align = ((unsigned long)(entry->skb->data + header_length)) & 3;
/*
* Hardware might have stripped the IV/EIV/ICV data,
* in that case it is possible that the data was
- * provided seperately (through hardware descriptor)
+ * provided separately (through hardware descriptor)
* in which case we should reinsert the data into the frame.
*/
- if ((rxdesc.flags & RX_FLAG_IV_STRIPPED)) {
- rt2x00crypto_rx_insert_iv(entry->skb, align,
- header_length, &rxdesc);
- } else if (align) {
- skb_push(entry->skb, align);
- /* Move entire frame in 1 command */
- memmove(entry->skb->data, entry->skb->data + align,
- rxdesc.size);
- }
+ if ((rxdesc.dev_flags & RXDONE_CRYPTO_IV) &&
+ (rxdesc.flags & RX_FLAG_IV_STRIPPED))
+ rt2x00crypto_rx_insert_iv(entry->skb, header_length,
+ &rxdesc);
+ else if (header_length &&
+ (rxdesc.size > header_length) &&
+ (rxdesc.dev_flags & RXDONE_L2PAD))
+ rt2x00queue_remove_l2pad(entry->skb, header_length);
+ else
+ rt2x00queue_align_payload(entry->skb, header_length);
- /* Update data pointers, trim buffer to correct size */
+ /* Trim buffer to correct size */
skb_trim(entry->skb, rxdesc.size);
/*
- * Update RX statistics.
+ * Check if the frame was received using HT. In that case,
+ * the rate is the MCS index and should be passed to mac80211
+ * directly. Otherwise we need to translate the signal to
+ * the correct bitrate index.
*/
- sband = &rt2x00dev->bands[rt2x00dev->curr_band];
- for (i = 0; i < sband->n_bitrates; i++) {
- rate = rt2x00_get_rate(sband->bitrates[i].hw_value);
-
- if (((rxdesc.dev_flags & RXDONE_SIGNAL_PLCP) &&
- (rate->plcp == rxdesc.signal)) ||
- (!(rxdesc.dev_flags & RXDONE_SIGNAL_PLCP) &&
- (rate->bitrate == rxdesc.signal))) {
- idx = i;
- break;
- }
- }
-
- if (idx < 0) {
- WARNING(rt2x00dev, "Frame received with unrecognized signal,"
- "signal=0x%.2x, plcp=%d.\n", rxdesc.signal,
- !!(rxdesc.dev_flags & RXDONE_SIGNAL_PLCP));
- idx = 0;
+ if (rxdesc.rate_mode == RATE_MODE_CCK ||
+ rxdesc.rate_mode == RATE_MODE_OFDM) {
+ rate_idx = rt2x00lib_rxdone_read_signal(rt2x00dev, &rxdesc);
+ } else {
+ rxdesc.flags |= RX_FLAG_HT;
+ rate_idx = rxdesc.signal;
}
/*
- * 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->rate_idx = rate_idx;
rx_status->signal = rxdesc.rssi;
rx_status->flag = rxdesc.flags;
rx_status->antenna = rt2x00dev->link.ant.active.rx;
* mac80211 will clean up the skb structure.
*/
rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_RXDONE, entry->skb);
- ieee80211_rx_irqsafe(rt2x00dev->hw, entry->skb, rx_status);
+ memcpy(IEEE80211_SKB_RXCB(entry->skb), rx_status, sizeof(*rx_status));
+
+ /*
+ * Currently only PCI and SOC devices handle rx interrupts in process
+ * context. Hence, use ieee80211_rx_irqsafe for USB and ieee80211_rx_ni
+ * for PCI and SOC devices.
+ */
+ if (rt2x00_is_usb(rt2x00dev))
+ ieee80211_rx_irqsafe(rt2x00dev->hw, entry->skb);
+ else
+ ieee80211_rx_ni(rt2x00dev->hw, entry->skb);
/*
* Replace the skb with the freshly allocated one.
entry->skb = skb;
entry->flags = 0;
- rt2x00dev->ops->lib->init_rxentry(rt2x00dev, entry);
+ rt2x00dev->ops->lib->clear_entry(entry);
rt2x00queue_index_inc(entry->queue, Q_INDEX);
}
*/
const struct rt2x00_rate rt2x00_supported_rates[12] = {
{
- .flags = DEV_RATE_CCK | DEV_RATE_BASIC,
+ .flags = DEV_RATE_CCK,
.bitrate = 10,
.ratemask = BIT(0),
.plcp = 0x00,
+ .mcs = RATE_MCS(RATE_MODE_CCK, 0),
},
{
- .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE | DEV_RATE_BASIC,
+ .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE,
.bitrate = 20,
.ratemask = BIT(1),
.plcp = 0x01,
+ .mcs = RATE_MCS(RATE_MODE_CCK, 1),
},
{
- .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE | DEV_RATE_BASIC,
+ .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE,
.bitrate = 55,
.ratemask = BIT(2),
.plcp = 0x02,
+ .mcs = RATE_MCS(RATE_MODE_CCK, 2),
},
{
- .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE | DEV_RATE_BASIC,
+ .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE,
.bitrate = 110,
.ratemask = BIT(3),
.plcp = 0x03,
+ .mcs = RATE_MCS(RATE_MODE_CCK, 3),
},
{
- .flags = DEV_RATE_OFDM | DEV_RATE_BASIC,
+ .flags = DEV_RATE_OFDM,
.bitrate = 60,
.ratemask = BIT(4),
.plcp = 0x0b,
+ .mcs = RATE_MCS(RATE_MODE_OFDM, 0),
},
{
.flags = DEV_RATE_OFDM,
.bitrate = 90,
.ratemask = BIT(5),
.plcp = 0x0f,
+ .mcs = RATE_MCS(RATE_MODE_OFDM, 1),
},
{
- .flags = DEV_RATE_OFDM | DEV_RATE_BASIC,
+ .flags = DEV_RATE_OFDM,
.bitrate = 120,
.ratemask = BIT(6),
.plcp = 0x0a,
+ .mcs = RATE_MCS(RATE_MODE_OFDM, 2),
},
{
.flags = DEV_RATE_OFDM,
.bitrate = 180,
.ratemask = BIT(7),
.plcp = 0x0e,
+ .mcs = RATE_MCS(RATE_MODE_OFDM, 3),
},
{
- .flags = DEV_RATE_OFDM | DEV_RATE_BASIC,
+ .flags = DEV_RATE_OFDM,
.bitrate = 240,
.ratemask = BIT(8),
.plcp = 0x09,
+ .mcs = RATE_MCS(RATE_MODE_OFDM, 4),
},
{
.flags = DEV_RATE_OFDM,
.bitrate = 360,
.ratemask = BIT(9),
.plcp = 0x0d,
+ .mcs = RATE_MCS(RATE_MODE_OFDM, 5),
},
{
.flags = DEV_RATE_OFDM,
.bitrate = 480,
.ratemask = BIT(10),
.plcp = 0x08,
+ .mcs = RATE_MCS(RATE_MODE_OFDM, 6),
},
{
.flags = DEV_RATE_OFDM,
.bitrate = 540,
.ratemask = BIT(11),
.plcp = 0x0c,
+ .mcs = RATE_MCS(RATE_MODE_OFDM, 7),
},
};
{
entry->flags = 0;
entry->bitrate = rate->bitrate;
- entry->hw_value = rt2x00_create_rate_hw_value(index, 0);
- entry->hw_value_short = entry->hw_value;
+ entry->hw_value =index;
+ entry->hw_value_short = index;
- if (rate->flags & DEV_RATE_SHORT_PREAMBLE) {
+ if (rate->flags & DEV_RATE_SHORT_PREAMBLE)
entry->flags |= IEEE80211_RATE_SHORT_PREAMBLE;
- entry->hw_value_short |= rt2x00_create_rate_hw_value(index, 1);
- }
}
static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev,
rt2x00dev->bands[IEEE80211_BAND_2GHZ].bitrates = rates;
hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
&rt2x00dev->bands[IEEE80211_BAND_2GHZ];
+ memcpy(&rt2x00dev->bands[IEEE80211_BAND_2GHZ].ht_cap,
+ &spec->ht, sizeof(spec->ht));
}
/*
rt2x00dev->bands[IEEE80211_BAND_5GHZ].bitrates = &rates[4];
hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
&rt2x00dev->bands[IEEE80211_BAND_5GHZ];
+ memcpy(&rt2x00dev->bands[IEEE80211_BAND_5GHZ].ht_cap,
+ &spec->ht, sizeof(spec->ht));
}
return 0;
static void rt2x00lib_remove_hw(struct rt2x00_dev *rt2x00dev)
{
- if (test_bit(DEVICE_REGISTERED_HW, &rt2x00dev->flags))
+ if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags))
ieee80211_unregister_hw(rt2x00dev->hw);
if (likely(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ])) {
struct hw_mode_spec *spec = &rt2x00dev->spec;
int status;
+ if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags))
+ return 0;
+
/*
* Initialize HW modes.
*/
*/
rt2x00dev->hw->queues = rt2x00dev->ops->tx_queues;
+ /*
+ * Initialize extra TX headroom required.
+ */
+ rt2x00dev->hw->extra_tx_headroom =
+ max_t(unsigned int, IEEE80211_TX_STATUS_HEADROOM,
+ rt2x00dev->ops->extra_tx_headroom);
+
+ /*
+ * Take TX headroom required for alignment into account.
+ */
+ if (test_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags))
+ rt2x00dev->hw->extra_tx_headroom += RT2X00_L2PAD_SIZE;
+ else if (test_bit(DRIVER_REQUIRE_DMA, &rt2x00dev->flags))
+ rt2x00dev->hw->extra_tx_headroom += RT2X00_ALIGN_SIZE;
+
/*
* Register HW.
*/
status = ieee80211_register_hw(rt2x00dev->hw);
- if (status) {
- rt2x00lib_remove_hw(rt2x00dev);
+ if (status)
return status;
- }
- __set_bit(DEVICE_REGISTERED_HW, &rt2x00dev->flags);
+ set_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags);
return 0;
}
*/
static void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev)
{
- if (!__test_and_clear_bit(DEVICE_INITIALIZED, &rt2x00dev->flags))
+ if (!test_and_clear_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags))
return;
/*
{
int status;
- if (test_bit(DEVICE_INITIALIZED, &rt2x00dev->flags))
+ if (test_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags))
return 0;
/*
return status;
}
- __set_bit(DEVICE_INITIALIZED, &rt2x00dev->flags);
+ set_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags);
/*
* Register the extra components.
{
int retval;
- if (test_bit(DEVICE_STARTED, &rt2x00dev->flags))
+ if (test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags))
return 0;
/*
if (retval)
return retval;
- /*
- * Enable radio.
- */
+ rt2x00dev->intf_ap_count = 0;
+ rt2x00dev->intf_sta_count = 0;
+ rt2x00dev->intf_associated = 0;
+
+ /* Enable the radio */
retval = rt2x00lib_enable_radio(rt2x00dev);
if (retval) {
- rt2x00lib_uninitialize(rt2x00dev);
+ rt2x00queue_uninitialize(rt2x00dev);
return retval;
}
- rt2x00dev->intf_ap_count = 0;
- rt2x00dev->intf_sta_count = 0;
- rt2x00dev->intf_associated = 0;
-
- __set_bit(DEVICE_STARTED, &rt2x00dev->flags);
- __set_bit(DEVICE_DIRTY_CONFIG, &rt2x00dev->flags);
+ set_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags);
return 0;
}
void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev)
{
- if (!test_bit(DEVICE_STARTED, &rt2x00dev->flags))
+ if (!test_and_clear_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags))
return;
/*
rt2x00dev->intf_ap_count = 0;
rt2x00dev->intf_sta_count = 0;
rt2x00dev->intf_associated = 0;
-
- __clear_bit(DEVICE_STARTED, &rt2x00dev->flags);
}
/*
{
int retval = -ENOMEM;
+ mutex_init(&rt2x00dev->csr_mutex);
+
+ set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags);
+
/*
* Make room for rt2x00_intf inside the per-interface
* structure ieee80211_vif.
*/
rt2x00dev->hw->vif_data_size = sizeof(struct rt2x00_intf);
+ /*
+ * Determine which operating modes are supported, all modes
+ * which require beaconing, depend on the availability of
+ * beacon entries.
+ */
+ rt2x00dev->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
+ if (rt2x00dev->ops->bcn->entry_num > 0)
+ rt2x00dev->hw->wiphy->interface_modes |=
+ BIT(NL80211_IFTYPE_ADHOC) |
+ BIT(NL80211_IFTYPE_AP) |
+ BIT(NL80211_IFTYPE_MESH_POINT) |
+ BIT(NL80211_IFTYPE_WDS);
+
/*
* Let the driver probe the device to detect the capabilities.
*/
* Initialize configuration work.
*/
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.
/*
* Register extra components.
*/
+ rt2x00link_register(rt2x00dev);
rt2x00leds_register(rt2x00dev);
- rt2x00rfkill_allocate(rt2x00dev);
rt2x00debug_register(rt2x00dev);
- __set_bit(DEVICE_PRESENT, &rt2x00dev->flags);
-
return 0;
exit:
void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev)
{
- __clear_bit(DEVICE_PRESENT, &rt2x00dev->flags);
+ clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags);
/*
* Disable radio.
*/
rt2x00lib_disable_radio(rt2x00dev);
+ /*
+ * Stop all work.
+ */
+ cancel_work_sync(&rt2x00dev->intf_work);
+
/*
* Uninitialize device.
*/
* Free extra components
*/
rt2x00debug_deregister(rt2x00dev);
- rt2x00rfkill_free(rt2x00dev);
rt2x00leds_unregister(rt2x00dev);
/*
#ifdef CONFIG_PM
int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state)
{
- int retval;
-
NOTICE(rt2x00dev, "Going to sleep.\n");
- __clear_bit(DEVICE_PRESENT, &rt2x00dev->flags);
/*
- * Only continue if mac80211 has open interfaces.
+ * Prevent mac80211 from accessing driver while suspended.
*/
- if (!test_bit(DEVICE_STARTED, &rt2x00dev->flags))
- goto exit;
- __set_bit(DEVICE_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);
/*
rt2x00leds_suspend(rt2x00dev);
rt2x00debug_deregister(rt2x00dev);
-exit:
/*
* Set device mode to sleep for power management,
* on some hardware this call seems to consistently fail.
* 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");
}
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 == IEEE80211_IF_TYPE_AP ||
- vif->type == IEEE80211_IF_TYPE_IBSS)
- intf->delayed_flags |= DELAYED_UPDATE_BEACON;
-
- spin_unlock(&intf->lock);
-}
-
int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev)
{
- int retval;
-
NOTICE(rt2x00dev, "Waking up.\n");
/*
rt2x00debug_register(rt2x00dev);
rt2x00leds_resume(rt2x00dev);
- /*
- * Only continue if mac80211 had open interfaces.
- */
- if (!__test_and_clear_bit(DEVICE_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, &rt2x00dev->hw->conf);
- 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_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);
+ set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags);
return 0;
-
-exit:
- rt2x00lib_disable_radio(rt2x00dev);
- rt2x00lib_uninitialize(rt2x00dev);
- rt2x00debug_deregister(rt2x00dev);
-
- return retval;
}
EXPORT_SYMBOL_GPL(rt2x00lib_resume);
#endif /* CONFIG_PM */
Code Review / linux-2.6.git / blobdiff