/*
- Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
+ Copyright (C) 2010 Willow Garage <http://www.willowgarage.com>
+ Copyright (C) 2004 - 2010 Ivo van Doorn <IvDoorn@gmail.com>
<http://rt2x00.serialmonkey.com>
This program is free software; you can redistribute it and/or modify
*/
rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON);
+ /*
+ * Start watchdog monitoring.
+ */
+ rt2x00link_start_watchdog(rt2x00dev);
+
/*
* Start the TX queues.
*/
ieee80211_stop_queues(rt2x00dev->hw);
rt2x00queue_stop_queues(rt2x00dev);
+ /*
+ * Stop watchdog monitoring.
+ */
+ rt2x00link_stop_watchdog(rt2x00dev);
+
/*
* Disable RX.
*/
/*
* Interrupt context handlers.
*/
-static void rt2x00lib_beacondone_iter(void *data, u8 *mac,
- struct ieee80211_vif *vif)
+static void rt2x00lib_bc_buffer_iter(void *data, u8 *mac,
+ struct ieee80211_vif *vif)
{
- struct rt2x00_intf *intf = vif_to_intf(vif);
+ struct rt2x00_dev *rt2x00dev = data;
+ struct sk_buff *skb;
+
+ /*
+ * Only AP mode interfaces do broad- and multicast buffering
+ */
+ if (vif->type != NL80211_IFTYPE_AP)
+ return;
+
+ /*
+ * Send out buffered broad- and multicast frames
+ */
+ skb = ieee80211_get_buffered_bc(rt2x00dev->hw, vif);
+ while (skb) {
+ rt2x00mac_tx(rt2x00dev->hw, skb);
+ skb = ieee80211_get_buffered_bc(rt2x00dev->hw, vif);
+ }
+}
+
+static void rt2x00lib_beaconupdate_iter(void *data, u8 *mac,
+ struct ieee80211_vif *vif)
+{
+ struct rt2x00_dev *rt2x00dev = data;
if (vif->type != NL80211_IFTYPE_AP &&
vif->type != NL80211_IFTYPE_ADHOC &&
vif->type != NL80211_IFTYPE_WDS)
return;
- 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_STATE_ENABLED_RADIO, &rt2x00dev->flags))
return;
- ieee80211_iterate_active_interfaces_atomic(rt2x00dev->hw,
- rt2x00lib_beacondone_iter,
- rt2x00dev);
+ /* send buffered bc/mc frames out for every bssid */
+ ieee80211_iterate_active_interfaces(rt2x00dev->hw,
+ rt2x00lib_bc_buffer_iter,
+ rt2x00dev);
+ /*
+ * Devices with pre tbtt interrupt don't need to update the beacon
+ * here as they will fetch the next beacon directly prior to
+ * transmission.
+ */
+ if (test_bit(DRIVER_SUPPORT_PRE_TBTT_INTERRUPT, &rt2x00dev->flags))
+ return;
- ieee80211_queue_work(rt2x00dev->hw, &rt2x00dev->intf_work);
+ /* fetch next beacon */
+ ieee80211_iterate_active_interfaces(rt2x00dev->hw,
+ rt2x00lib_beaconupdate_iter,
+ rt2x00dev);
}
EXPORT_SYMBOL_GPL(rt2x00lib_beacondone);
+void rt2x00lib_pretbtt(struct rt2x00_dev *rt2x00dev)
+{
+ if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
+ return;
+
+ /* fetch next beacon */
+ ieee80211_iterate_active_interfaces(rt2x00dev->hw,
+ rt2x00lib_beaconupdate_iter,
+ rt2x00dev);
+}
+EXPORT_SYMBOL_GPL(rt2x00lib_pretbtt);
+
+void rt2x00lib_dmadone(struct queue_entry *entry)
+{
+ clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags);
+ rt2x00queue_index_inc(entry->queue, Q_INDEX_DMA_DONE);
+}
+EXPORT_SYMBOL_GPL(rt2x00lib_dmadone);
+
void rt2x00lib_txdone(struct queue_entry *entry,
struct txdone_entry_desc *txdesc)
{
/*
* Unmap the skb.
*/
- rt2x00queue_unmap_skb(rt2x00dev, entry->skb);
+ rt2x00queue_unmap_skb(entry);
+
+ /*
+ * 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 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))
*/
success =
test_bit(TXDONE_SUCCESS, &txdesc->flags) ||
- test_bit(TXDONE_UNKNOWN, &txdesc->flags) ||
- test_bit(TXDONE_FALLBACK, &txdesc->flags);
+ test_bit(TXDONE_UNKNOWN, &txdesc->flags);
/*
* Update TX statistics.
/*
* Frame was send with retries, hardware tried
* different rates to send out the frame, at each
- * retry it lowered the rate 1 step.
+ * 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))
rt2x00dev->low_level_stats.dot11ACKFailureCount++;
}
+ /*
+ * 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++;
* send the status report back.
*/
if (!(skbdesc_flags & SKBDESC_NOT_MAC80211))
- ieee80211_tx_status_irqsafe(rt2x00dev->hw, entry->skb);
+ 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.
rt2x00dev->ops->lib->clear_entry(entry);
- clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags);
rt2x00queue_index_inc(entry->queue, Q_INDEX_DONE);
/*
}
EXPORT_SYMBOL_GPL(rt2x00lib_txdone);
+void rt2x00lib_txdone_noinfo(struct queue_entry *entry, u32 status)
+{
+ struct txdone_entry_desc txdesc;
+
+ txdesc.flags = 0;
+ __set_bit(status, &txdesc.flags);
+ txdesc.retry = 0;
+
+ rt2x00lib_txdone(entry, &txdesc);
+}
+EXPORT_SYMBOL_GPL(rt2x00lib_txdone_noinfo);
+
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;
+ int signal = rxdesc->signal;
+ int type = (rxdesc->dev_flags & RXDONE_SIGNAL_MASK);
+
+ switch (rxdesc->rate_mode) {
+ case RATE_MODE_CCK:
+ case RATE_MODE_OFDM:
+ /*
+ * 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, signal);
+
+ 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;
+ }
}
+ break;
+ case RATE_MODE_HT_MIX:
+ case RATE_MODE_HT_GREENFIELD:
+ if (signal >= 0 && signal <= 76)
+ return signal;
+ break;
+ default:
+ break;
}
WARNING(rt2x00dev, "Frame received with unrecognized signal, "
- "signal=0x%.4x, type=%d.\n", signal, type);
+ "mode=0x%.4x, signal=0x%.4x, type=%d.\n",
+ rxdesc->rate_mode, signal, type);
return 0;
}
-void rt2x00lib_rxdone(struct rt2x00_dev *rt2x00dev,
- struct queue_entry *entry)
+void rt2x00lib_rxdone(struct queue_entry *entry)
{
+ struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
struct rxdone_entry_desc rxdesc;
struct sk_buff *skb;
- struct ieee80211_rx_status *rx_status = &rt2x00dev->rx_status;
+ struct ieee80211_rx_status *rx_status;
unsigned int header_length;
int rate_idx;
+
+ if (test_bit(ENTRY_DATA_IO_FAILED, &entry->flags))
+ goto submit_entry;
+
/*
* Allocate a new sk_buffer. If no new buffer available, drop the
* received frame and reuse the existing buffer.
*/
- skb = rt2x00queue_alloc_rxskb(rt2x00dev, entry);
+ skb = rt2x00queue_alloc_rxskb(entry);
if (!skb)
- return;
+ goto submit_entry;
/*
* Unmap the skb.
*/
- rt2x00queue_unmap_skb(rt2x00dev, entry->skb);
+ rt2x00queue_unmap_skb(entry);
/*
* Extract the RXD details.
skb_trim(entry->skb, rxdesc.size);
/*
- * 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.
+ * Translate the signal to the correct bitrate index.
*/
- if (rxdesc.rate_mode == RATE_MODE_CCK ||
- rxdesc.rate_mode == RATE_MODE_OFDM) {
- rate_idx = rt2x00lib_rxdone_read_signal(rt2x00dev, &rxdesc);
- } else {
+ rate_idx = rt2x00lib_rxdone_read_signal(rt2x00dev, &rxdesc);
+ if (rxdesc.rate_mode == RATE_MODE_HT_MIX ||
+ rxdesc.rate_mode == RATE_MODE_HT_GREENFIELD)
rxdesc.flags |= RX_FLAG_HT;
- rate_idx = rxdesc.signal;
- }
/*
* Update extra components
*/
rt2x00link_update_stats(rt2x00dev, entry->skb, &rxdesc);
rt2x00debug_update_crypto(rt2x00dev, &rxdesc);
+ rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_RXDONE, entry->skb);
+ /*
+ * Initialize RX status information, and send frame
+ * to mac80211.
+ */
+ rx_status = IEEE80211_SKB_RXCB(entry->skb);
rx_status->mactime = rxdesc.timestamp;
+ rx_status->band = rt2x00dev->curr_band;
+ rx_status->freq = rt2x00dev->curr_freq;
rx_status->rate_idx = rate_idx;
rx_status->signal = rxdesc.rssi;
rx_status->flag = rxdesc.flags;
rx_status->antenna = rt2x00dev->link.ant.active.rx;
- /*
- * Send frame to mac80211 & debugfs.
- * mac80211 will clean up the skb structure.
- */
- rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_RXDONE, entry->skb);
- memcpy(IEEE80211_SKB_RXCB(entry->skb), rx_status, sizeof(*rx_status));
- ieee80211_rx_irqsafe(rt2x00dev->hw, entry->skb);
+ ieee80211_rx_ni(rt2x00dev->hw, entry->skb);
/*
* Replace the skb with the freshly allocated one.
*/
entry->skb = skb;
- entry->flags = 0;
+submit_entry:
rt2x00dev->ops->lib->clear_entry(entry);
-
rt2x00queue_index_inc(entry->queue, Q_INDEX);
+ rt2x00queue_index_inc(entry->queue, Q_INDEX_DONE);
}
EXPORT_SYMBOL_GPL(rt2x00lib_rxdone);
for (i = 0; i < spec->num_channels; i++) {
rt2x00lib_channel(&channels[i],
spec->channels[i].channel,
- spec->channels_info[i].tx_power1, i);
+ spec->channels_info[i].max_power, i);
}
/*
else if (test_bit(DRIVER_REQUIRE_DMA, &rt2x00dev->flags))
rt2x00dev->hw->extra_tx_headroom += RT2X00_ALIGN_SIZE;
+ /*
+ * Allocate tx status FIFO for driver use.
+ */
+ if (test_bit(DRIVER_REQUIRE_TXSTATUS_FIFO, &rt2x00dev->flags) &&
+ rt2x00dev->ops->lib->txstatus_tasklet) {
+ /*
+ * Allocate txstatus fifo and tasklet, we use a size of 512
+ * for the kfifo which is big enough to store 512/4=128 tx
+ * status reports. In the worst case (tx status for all tx
+ * queues gets reported before we've got a chance to handle
+ * them) 24*4=384 tx status reports need to be cached.
+ */
+ status = kfifo_alloc(&rt2x00dev->txstatus_fifo, 512,
+ GFP_KERNEL);
+ if (status)
+ return status;
+
+ /* tasklet for processing the tx status reports. */
+ tasklet_init(&rt2x00dev->txstatus_tasklet,
+ rt2x00dev->ops->lib->txstatus_tasklet,
+ (unsigned long)rt2x00dev);
+
+ }
+
/*
* Register HW.
*/
/* Enable the radio */
retval = rt2x00lib_enable_radio(rt2x00dev);
- if (retval) {
- rt2x00queue_uninitialize(rt2x00dev);
+ if (retval)
return retval;
- }
set_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags);
* Stop all work.
*/
cancel_work_sync(&rt2x00dev->intf_work);
+ cancel_work_sync(&rt2x00dev->rxdone_work);
+ cancel_work_sync(&rt2x00dev->txdone_work);
+
+ /*
+ * Free the tx status fifo.
+ */
+ kfifo_free(&rt2x00dev->txstatus_fifo);
+
+ /*
+ * Kill the tx status tasklet.
+ */
+ tasklet_kill(&rt2x00dev->txstatus_tasklet);
/*
* Uninitialize device.
projects / mv-sheeva.git / blobdiff