1 files changed, 666 insertions, 0 deletions

diff --git a/drivers/net/wireless/libertas_tf/main.c b/drivers/net/wireless/libertas_tf/main.c
new file mode 100644
index 000000000000..2c1d680d2c55
--- /dev/null
+++ b/drivers/net/wireless/libertas_tf/main.c
@@ -0,0 +1,666 @@
+/*
+ *  Copyright (C) 2008, cozybit Inc.
+ *  Copyright (C) 2003-2006, Marvell International Ltd.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or (at
+ *  your option) any later version.
+ */
+#include "libertas_tf.h"
+#include "linux/etherdevice.h"
+
+#define DRIVER_RELEASE_VERSION "004.p0"
+/* thinfirm version: 5.132.X.pX */
+#define LBTF_FW_VER_MIN		0x05840300
+#define LBTF_FW_VER_MAX		0x0584ffff
+#define QOS_CONTROL_LEN		2
+
+static const char lbtf_driver_version[] = "THINFIRM-USB8388-" DRIVER_RELEASE_VERSION;
+struct workqueue_struct *lbtf_wq;
+
+static const struct ieee80211_channel lbtf_channels[] = {
+	{ .center_freq = 2412, .hw_value = 1 },
+	{ .center_freq = 2417, .hw_value = 2 },
+	{ .center_freq = 2422, .hw_value = 3 },
+	{ .center_freq = 2427, .hw_value = 4 },
+	{ .center_freq = 2432, .hw_value = 5 },
+	{ .center_freq = 2437, .hw_value = 6 },
+	{ .center_freq = 2442, .hw_value = 7 },
+	{ .center_freq = 2447, .hw_value = 8 },
+	{ .center_freq = 2452, .hw_value = 9 },
+	{ .center_freq = 2457, .hw_value = 10 },
+	{ .center_freq = 2462, .hw_value = 11 },
+	{ .center_freq = 2467, .hw_value = 12 },
+	{ .center_freq = 2472, .hw_value = 13 },
+	{ .center_freq = 2484, .hw_value = 14 },
+};
+
+/* This table contains the hardware specific values for the modulation rates. */
+static const struct ieee80211_rate lbtf_rates[] = {
+	{ .bitrate = 10,
+	  .hw_value = 0, },
+	{ .bitrate = 20,
+	  .hw_value = 1,
+	  .flags = IEEE80211_RATE_SHORT_PREAMBLE },
+	{ .bitrate = 55,
+	  .hw_value = 2,
+	  .flags = IEEE80211_RATE_SHORT_PREAMBLE },
+	{ .bitrate = 110,
+	  .hw_value = 3,
+	  .flags = IEEE80211_RATE_SHORT_PREAMBLE },
+	{ .bitrate = 60,
+	  .hw_value = 5,
+	  .flags = 0 },
+	{ .bitrate = 90,
+	  .hw_value = 6,
+	  .flags = 0 },
+	{ .bitrate = 120,
+	  .hw_value = 7,
+	  .flags = 0 },
+	{ .bitrate = 180,
+	  .hw_value = 8,
+	  .flags = 0 },
+	{ .bitrate = 240,
+	  .hw_value = 9,
+	  .flags = 0 },
+	{ .bitrate = 360,
+	  .hw_value = 10,
+	  .flags = 0 },
+	{ .bitrate = 480,
+	  .hw_value = 11,
+	  .flags = 0 },
+	{ .bitrate = 540,
+	  .hw_value = 12,
+	  .flags = 0 },
+};
+
+static void lbtf_cmd_work(struct work_struct *work)
+{
+	struct lbtf_private *priv = container_of(work, struct lbtf_private,
+					 cmd_work);
+	spin_lock_irq(&priv->driver_lock);
+	/* command response? */
+	if (priv->cmd_response_rxed) {
+		priv->cmd_response_rxed = 0;
+		spin_unlock_irq(&priv->driver_lock);
+		lbtf_process_rx_command(priv);
+		spin_lock_irq(&priv->driver_lock);
+	}
+
+	if (priv->cmd_timed_out && priv->cur_cmd) {
+		struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
+
+		if (++priv->nr_retries > 10) {
+			lbtf_complete_command(priv, cmdnode,
+					      -ETIMEDOUT);
+			priv->nr_retries = 0;
+		} else {
+			priv->cur_cmd = NULL;
+
+			/* Stick it back at the _top_ of the pending
+			 * queue for immediate resubmission */
+			list_add(&cmdnode->list, &priv->cmdpendingq);
+		}
+	}
+	priv->cmd_timed_out = 0;
+	spin_unlock_irq(&priv->driver_lock);
+
+	if (!priv->fw_ready)
+		return;
+	/* Execute the next command */
+	if (!priv->cur_cmd)
+		lbtf_execute_next_command(priv);
+}
+
+/**
+ *  lbtf_setup_firmware: initialize firmware.
+ *
+ *  @priv    A pointer to struct lbtf_private structure
+ *
+ *  Returns: 0 on success.
+ */
+static int lbtf_setup_firmware(struct lbtf_private *priv)
+{
+	int ret = -1;
+
+	/*
+	 * Read priv address from HW
+	 */
+	memset(priv->current_addr, 0xff, ETH_ALEN);
+	ret = lbtf_update_hw_spec(priv);
+	if (ret) {
+		ret = -1;
+		goto done;
+	}
+
+	lbtf_set_mac_control(priv);
+	lbtf_set_radio_control(priv);
+
+	ret = 0;
+done:
+	return ret;
+}
+
+/**
+ *  This function handles the timeout of command sending.
+ *  It will re-send the same command again.
+ */
+static void command_timer_fn(unsigned long data)
+{
+	struct lbtf_private *priv = (struct lbtf_private *)data;
+	unsigned long flags;
+
+	spin_lock_irqsave(&priv->driver_lock, flags);
+
+	if (!priv->cur_cmd) {
+		printk(KERN_DEBUG "libertastf: command timer expired; "
+				  "no pending command\n");
+		goto out;
+	}
+
+	printk(KERN_DEBUG "libertas: command %x timed out\n",
+		le16_to_cpu(priv->cur_cmd->cmdbuf->command));
+
+	priv->cmd_timed_out = 1;
+	queue_work(lbtf_wq, &priv->cmd_work);
+out:
+	spin_unlock_irqrestore(&priv->driver_lock, flags);
+}
+
+static int lbtf_init_adapter(struct lbtf_private *priv)
+{
+	memset(priv->current_addr, 0xff, ETH_ALEN);
+	mutex_init(&priv->lock);
+
+	priv->vif = NULL;
+	setup_timer(&priv->command_timer, command_timer_fn,
+		(unsigned long)priv);
+
+	INIT_LIST_HEAD(&priv->cmdfreeq);
+	INIT_LIST_HEAD(&priv->cmdpendingq);
+
+	spin_lock_init(&priv->driver_lock);
+
+	/* Allocate the command buffers */
+	if (lbtf_allocate_cmd_buffer(priv))
+		return -1;
+
+	return 0;
+}
+
+static void lbtf_free_adapter(struct lbtf_private *priv)
+{
+	lbtf_free_cmd_buffer(priv);
+	del_timer(&priv->command_timer);
+}
+
+static int lbtf_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
+{
+	struct lbtf_private *priv = hw->priv;
+
+	priv->skb_to_tx = skb;
+	queue_work(lbtf_wq, &priv->tx_work);
+	/*
+	 * queue will be restarted when we receive transmission feedback if
+	 * there are no buffered multicast frames to send
+	 */
+	ieee80211_stop_queues(priv->hw);
+	return 0;
+}
+
+static void lbtf_tx_work(struct work_struct *work)
+{
+	struct lbtf_private *priv = container_of(work, struct lbtf_private,
+					 tx_work);
+	unsigned int len;
+	struct ieee80211_tx_info *info;
+	struct txpd *txpd;
+	struct sk_buff *skb = NULL;
+	int err;
+
+	if ((priv->vif->type == IEEE80211_IF_TYPE_AP) &&
+	    (!skb_queue_empty(&priv->bc_ps_buf)))
+		skb = skb_dequeue(&priv->bc_ps_buf);
+	else if (priv->skb_to_tx) {
+		skb = priv->skb_to_tx;
+		priv->skb_to_tx = NULL;
+	} else
+		return;
+
+	len = skb->len;
+	info  = IEEE80211_SKB_CB(skb);
+	txpd = (struct txpd *)  skb_push(skb, sizeof(struct txpd));
+
+	if (priv->surpriseremoved) {
+		dev_kfree_skb_any(skb);
+		return;
+	}
+
+	memset(txpd, 0, sizeof(struct txpd));
+	/* Activate per-packet rate selection */
+	txpd->tx_control |= cpu_to_le32(MRVL_PER_PACKET_RATE |
+			     ieee80211_get_tx_rate(priv->hw, info)->hw_value);
+
+	/* copy destination address from 802.11 header */
+	memcpy(txpd->tx_dest_addr_high, skb->data + sizeof(struct txpd) + 4,
+		ETH_ALEN);
+	txpd->tx_packet_length = cpu_to_le16(len);
+	txpd->tx_packet_location = cpu_to_le32(sizeof(struct txpd));
+	BUG_ON(priv->tx_skb);
+	spin_lock_irq(&priv->driver_lock);
+	priv->tx_skb = skb;
+	err = priv->hw_host_to_card(priv, MVMS_DAT, skb->data, skb->len);
+	spin_unlock_irq(&priv->driver_lock);
+	if (err) {
+		dev_kfree_skb_any(skb);
+		priv->tx_skb = NULL;
+	}
+}
+
+static int lbtf_op_start(struct ieee80211_hw *hw)
+{
+	struct lbtf_private *priv = hw->priv;
+	void *card = priv->card;
+	int ret = -1;
+
+	if (!priv->fw_ready)
+		/* Upload firmware */
+		if (priv->hw_prog_firmware(card))
+			goto err_prog_firmware;
+
+	/* poke the firmware */
+	priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
+	priv->radioon = RADIO_ON;
+	priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
+	ret = lbtf_setup_firmware(priv);
+	if (ret)
+		goto err_prog_firmware;
+
+	if ((priv->fwrelease < LBTF_FW_VER_MIN) ||
+	    (priv->fwrelease > LBTF_FW_VER_MAX)) {
+		ret = -1;
+		goto err_prog_firmware;
+	}
+
+	printk(KERN_INFO "libertastf: Marvell WLAN 802.11 thinfirm adapter\n");
+	return 0;
+
+err_prog_firmware:
+	priv->hw_reset_device(card);
+	return ret;
+}
+
+static void lbtf_op_stop(struct ieee80211_hw *hw)
+{
+	struct lbtf_private *priv = hw->priv;
+	unsigned long flags;
+	struct sk_buff *skb;
+
+	struct cmd_ctrl_node *cmdnode;
+	/* Flush pending command nodes */
+	spin_lock_irqsave(&priv->driver_lock, flags);
+	list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
+		cmdnode->result = -ENOENT;
+		cmdnode->cmdwaitqwoken = 1;
+		wake_up_interruptible(&cmdnode->cmdwait_q);
+	}
+
+	spin_unlock_irqrestore(&priv->driver_lock, flags);
+	cancel_work_sync(&priv->cmd_work);
+	cancel_work_sync(&priv->tx_work);
+	while ((skb = skb_dequeue(&priv->bc_ps_buf)))
+		dev_kfree_skb_any(skb);
+	priv->radioon = RADIO_OFF;
+	lbtf_set_radio_control(priv);
+
+	return;
+}
+
+static int lbtf_op_add_interface(struct ieee80211_hw *hw,
+			struct ieee80211_if_init_conf *conf)
+{
+	struct lbtf_private *priv = hw->priv;
+	if (priv->vif != NULL)
+		return -EOPNOTSUPP;
+
+	priv->vif = conf->vif;
+	switch (conf->type) {
+	case IEEE80211_IF_TYPE_MESH_POINT:
+	case IEEE80211_IF_TYPE_AP:
+		lbtf_set_mode(priv, LBTF_AP_MODE);
+		break;
+	case IEEE80211_IF_TYPE_STA:
+		lbtf_set_mode(priv, LBTF_STA_MODE);
+		break;
+	default:
+		priv->vif = NULL;
+		return -EOPNOTSUPP;
+	}
+	lbtf_set_mac_address(priv, (u8 *) conf->mac_addr);
+	return 0;
+}
+
+static void lbtf_op_remove_interface(struct ieee80211_hw *hw,
+			struct ieee80211_if_init_conf *conf)
+{
+	struct lbtf_private *priv = hw->priv;
+
+	if (priv->vif->type == IEEE80211_IF_TYPE_AP ||
+	    priv->vif->type == IEEE80211_IF_TYPE_MESH_POINT)
+		lbtf_beacon_ctrl(priv, 0, 0);
+	lbtf_set_mode(priv, LBTF_PASSIVE_MODE);
+	lbtf_set_bssid(priv, 0, NULL);
+	priv->vif = NULL;
+}
+
+static int lbtf_op_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
+{
+	struct lbtf_private *priv = hw->priv;
+	if (conf->channel->center_freq != priv->cur_freq) {
+		priv->cur_freq = conf->channel->center_freq;
+		lbtf_set_channel(priv, conf->channel->hw_value);
+	}
+	return 0;
+}
+
+static int lbtf_op_config_interface(struct ieee80211_hw *hw,
+			struct ieee80211_vif *vif,
+			struct ieee80211_if_conf *conf)
+{
+	struct lbtf_private *priv = hw->priv;
+	struct sk_buff *beacon;
+
+	switch (priv->vif->type) {
+	case IEEE80211_IF_TYPE_AP:
+	case IEEE80211_IF_TYPE_MESH_POINT:
+		beacon = ieee80211_beacon_get(hw, vif);
+		if (beacon) {
+			lbtf_beacon_set(priv, beacon);
+			kfree_skb(beacon);
+			lbtf_beacon_ctrl(priv, 1, hw->conf.beacon_int);
+		}
+		break;
+	default:
+		break;
+	}
+
+	if (conf->bssid) {
+		u8 null_bssid[ETH_ALEN] = {0};
+		bool activate = compare_ether_addr(conf->bssid, null_bssid);
+		lbtf_set_bssid(priv, activate, conf->bssid);
+	}
+
+	return 0;
+}
+
+#define SUPPORTED_FIF_FLAGS  (FIF_PROMISC_IN_BSS | FIF_ALLMULTI)
+static void lbtf_op_configure_filter(struct ieee80211_hw *hw,
+			unsigned int changed_flags,
+			unsigned int *new_flags,
+			int mc_count, struct dev_mc_list *mclist)
+{
+	struct lbtf_private *priv = hw->priv;
+	int old_mac_control = priv->mac_control;
+	int i;
+	changed_flags &= SUPPORTED_FIF_FLAGS;
+	*new_flags &= SUPPORTED_FIF_FLAGS;
+
+	if (!changed_flags)
+		return;
+
+	if (*new_flags & (FIF_PROMISC_IN_BSS))
+		priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE;
+	else
+		priv->mac_control &= ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
+	if (*new_flags & (FIF_ALLMULTI) ||
+	    mc_count > MRVDRV_MAX_MULTICAST_LIST_SIZE) {
+		priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
+		priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;
+	} else if (mc_count) {
+		priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;
+		priv->mac_control &= ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
+		priv->nr_of_multicastmacaddr = mc_count;
+		for (i = 0; i < mc_count; i++) {
+			if (!mclist)
+				break;
+			memcpy(&priv->multicastlist[i], mclist->da_addr,
+					ETH_ALEN);
+			mclist = mclist->next;
+		}
+		lbtf_cmd_set_mac_multicast_addr(priv);
+	} else {
+		priv->mac_control &= ~(CMD_ACT_MAC_MULTICAST_ENABLE |
+				       CMD_ACT_MAC_ALL_MULTICAST_ENABLE);
+		if (priv->nr_of_multicastmacaddr) {
+			priv->nr_of_multicastmacaddr = 0;
+			lbtf_cmd_set_mac_multicast_addr(priv);
+		}
+	}
+
+
+	if (priv->mac_control != old_mac_control)
+		lbtf_set_mac_control(priv);
+}
+
+static void lbtf_op_bss_info_changed(struct ieee80211_hw *hw,
+			struct ieee80211_vif *vif,
+			struct ieee80211_bss_conf *bss_conf,
+			u32 changes)
+{
+	struct lbtf_private *priv = hw->priv;
+
+	if (changes & BSS_CHANGED_ERP_PREAMBLE) {
+		if (bss_conf->use_short_preamble)
+			priv->preamble = CMD_TYPE_SHORT_PREAMBLE;
+		else
+			priv->preamble = CMD_TYPE_LONG_PREAMBLE;
+		lbtf_set_radio_control(priv);
+	}
+
+	return;
+}
+
+static const struct ieee80211_ops lbtf_ops = {
+	.tx			= lbtf_op_tx,
+	.start			= lbtf_op_start,
+	.stop			= lbtf_op_stop,
+	.add_interface		= lbtf_op_add_interface,
+	.remove_interface	= lbtf_op_remove_interface,
+	.config			= lbtf_op_config,
+	.config_interface	= lbtf_op_config_interface,
+	.configure_filter	= lbtf_op_configure_filter,
+	.bss_info_changed	= lbtf_op_bss_info_changed,
+};
+
+int lbtf_rx(struct lbtf_private *priv, struct sk_buff *skb)
+{
+	struct ieee80211_rx_status stats;
+	struct rxpd *prxpd;
+	bool is_qos, is_4addr, is_amsdu, need_padding;
+	unsigned int flags;
+	u16 fc, fc_le;
+
+	prxpd = (struct rxpd *) skb->data;
+
+	stats.flag = 0;
+	if (!(prxpd->status & cpu_to_le16(MRVDRV_RXPD_STATUS_OK)))
+		stats.flag |= RX_FLAG_FAILED_FCS_CRC;
+	stats.freq = priv->cur_freq;
+	stats.band = IEEE80211_BAND_2GHZ;
+	stats.signal = prxpd->snr;
+	stats.noise = prxpd->nf;
+	stats.qual = prxpd->snr - prxpd->nf;
+	/* Marvell rate index has a hole at value 4 */
+	if (prxpd->rx_rate > 4)
+		--prxpd->rx_rate;
+	stats.rate_idx = prxpd->rx_rate;
+	skb_pull(skb, sizeof(struct rxpd));
+
+	fc_le = *((__le16 *) skb->data);
+	fc = le16_to_cpu(fc_le);
+	flags = le32_to_cpu(*(__le32 *)(skb->data + 4));
+
+	is_qos = ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
+		 (fc & IEEE80211_STYPE_QOS_DATA);
+	is_4addr = (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
+		   (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
+	is_amsdu =  ((fc & 0x8C) == 0x88) &&
+		    (*(skb->data + ieee80211_hdrlen(fc_le) - QOS_CONTROL_LEN)
+		     & IEEE80211_QOS_CONTROL_A_MSDU_PRESENT);
+
+	need_padding = is_qos ^ is_4addr ^ is_amsdu;
+	if (need_padding) {
+		memmove(skb->data + 2, skb->data, skb->len);
+		skb_reserve(skb, 2);
+	}
+
+	ieee80211_rx_irqsafe(priv->hw, skb, &stats);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(lbtf_rx);
+
+/**
+ * lbtf_add_card: Add and initialize the card, no fw upload yet.
+ *
+ *  @card    A pointer to card
+ *
+ *  Returns: pointer to struct lbtf_priv.
+ */
+struct lbtf_private *lbtf_add_card(void *card, struct device *dmdev)
+{
+	struct ieee80211_hw *hw;
+	struct lbtf_private *priv = NULL;
+
+	hw = ieee80211_alloc_hw(sizeof(struct lbtf_private), &lbtf_ops);
+	if (!hw)
+		goto done;
+
+	priv = hw->priv;
+	if (lbtf_init_adapter(priv))
+		goto err_init_adapter;
+
+	priv->hw = hw;
+	priv->card = card;
+	priv->tx_skb = NULL;
+
+	hw->queues = 1;
+	hw->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING;
+	hw->extra_tx_headroom = sizeof(struct txpd);
+	memcpy(priv->channels, lbtf_channels, sizeof(lbtf_channels));
+	memcpy(priv->rates, lbtf_rates, sizeof(lbtf_rates));
+	priv->band.n_bitrates = ARRAY_SIZE(lbtf_rates);
+	priv->band.bitrates = priv->rates;
+	priv->band.n_channels = ARRAY_SIZE(lbtf_channels);
+	priv->band.channels = priv->channels;
+	hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
+	skb_queue_head_init(&priv->bc_ps_buf);
+
+	SET_IEEE80211_DEV(hw, dmdev);
+
+	INIT_WORK(&priv->cmd_work, lbtf_cmd_work);
+	INIT_WORK(&priv->tx_work, lbtf_tx_work);
+	if (ieee80211_register_hw(hw))
+		goto err_init_adapter;
+
+	goto done;
+
+err_init_adapter:
+	lbtf_free_adapter(priv);
+	ieee80211_free_hw(hw);
+	priv = NULL;
+
+done:
+	return priv;
+}
+EXPORT_SYMBOL_GPL(lbtf_add_card);
+
+
+int lbtf_remove_card(struct lbtf_private *priv)
+{
+	struct ieee80211_hw *hw = priv->hw;
+
+	priv->surpriseremoved = 1;
+	del_timer(&priv->command_timer);
+	lbtf_free_adapter(priv);
+	priv->hw = NULL;
+	ieee80211_unregister_hw(hw);
+	ieee80211_free_hw(hw);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(lbtf_remove_card);
+
+void lbtf_send_tx_feedback(struct lbtf_private *priv, u8 retrycnt, u8 fail)
+{
+	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb);
+	memset(&info->status, 0, sizeof(info->status));
+	/*
+	 * Commented out, otherwise we never go beyond 1Mbit/s using mac80211
+	 * default pid rc algorithm.
+	 *
+	 * info->status.retry_count = MRVL_DEFAULT_RETRIES - retrycnt;
+	 */
+	info->status.excessive_retries = fail ? 1 : 0;
+	if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) && !fail)
+		info->flags |= IEEE80211_TX_STAT_ACK;
+	skb_pull(priv->tx_skb, sizeof(struct txpd));
+	ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb);
+	priv->tx_skb = NULL;
+	if (!priv->skb_to_tx && skb_queue_empty(&priv->bc_ps_buf))
+		ieee80211_wake_queues(priv->hw);
+	else
+		queue_work(lbtf_wq, &priv->tx_work);
+}
+EXPORT_SYMBOL_GPL(lbtf_send_tx_feedback);
+
+void lbtf_bcn_sent(struct lbtf_private *priv)
+{
+	struct sk_buff *skb = NULL;
+
+	if (priv->vif->type != IEEE80211_IF_TYPE_AP)
+		return;
+
+	if (skb_queue_empty(&priv->bc_ps_buf)) {
+		bool tx_buff_bc = 0;
+
+		while ((skb = ieee80211_get_buffered_bc(priv->hw, priv->vif))) {
+			skb_queue_tail(&priv->bc_ps_buf, skb);
+			tx_buff_bc = 1;
+		}
+		if (tx_buff_bc) {
+			ieee80211_stop_queues(priv->hw);
+			queue_work(lbtf_wq, &priv->tx_work);
+		}
+	}
+
+	skb = ieee80211_beacon_get(priv->hw, priv->vif);
+
+	if (skb) {
+		lbtf_beacon_set(priv, skb);
+		kfree_skb(skb);
+	}
+}
+EXPORT_SYMBOL_GPL(lbtf_bcn_sent);
+
+static int __init lbtf_init_module(void)
+{
+	lbtf_wq = create_workqueue("libertastf");
+	if (lbtf_wq == NULL) {
+		printk(KERN_ERR "libertastf: couldn't create workqueue\n");
+		return -ENOMEM;
+	}
+	return 0;
+}
+
+static void __exit lbtf_exit_module(void)
+{
+	destroy_workqueue(lbtf_wq);
+}
+
+module_init(lbtf_init_module);
+module_exit(lbtf_exit_module);
+
+MODULE_DESCRIPTION("Libertas WLAN Thinfirm Driver Library");
+MODULE_AUTHOR("Cozybit Inc.");
+MODULE_LICENSE("GPL");