2 * This file contains the major functions in WLAN
3 * driver. It includes init, exit, open, close and main
7 #include <linux/moduleparam.h>
8 #include <linux/delay.h>
9 #include <linux/freezer.h>
10 #include <linux/etherdevice.h>
11 #include <linux/netdevice.h>
12 #include <linux/if_arp.h>
13 #include <linux/kthread.h>
15 #include <net/iw_handler.h>
16 #include <net/ieee80211.h>
26 #define DRIVER_RELEASE_VERSION "323.p0"
27 const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
34 /* Module parameters */
35 unsigned int lbs_debug;
36 EXPORT_SYMBOL_GPL(lbs_debug);
37 module_param_named(libertas_debug, lbs_debug, int, 0644);
40 #define LBS_TX_PWR_DEFAULT 20 /*100mW */
41 #define LBS_TX_PWR_US_DEFAULT 20 /*100mW */
42 #define LBS_TX_PWR_JP_DEFAULT 16 /*50mW */
43 #define LBS_TX_PWR_FR_DEFAULT 20 /*100mW */
44 #define LBS_TX_PWR_EMEA_DEFAULT 20 /*100mW */
46 /* Format { channel, frequency (MHz), maxtxpower } */
47 /* band: 'B/G', region: USA FCC/Canada IC */
48 static struct chan_freq_power channel_freq_power_US_BG[] = {
49 {1, 2412, LBS_TX_PWR_US_DEFAULT},
50 {2, 2417, LBS_TX_PWR_US_DEFAULT},
51 {3, 2422, LBS_TX_PWR_US_DEFAULT},
52 {4, 2427, LBS_TX_PWR_US_DEFAULT},
53 {5, 2432, LBS_TX_PWR_US_DEFAULT},
54 {6, 2437, LBS_TX_PWR_US_DEFAULT},
55 {7, 2442, LBS_TX_PWR_US_DEFAULT},
56 {8, 2447, LBS_TX_PWR_US_DEFAULT},
57 {9, 2452, LBS_TX_PWR_US_DEFAULT},
58 {10, 2457, LBS_TX_PWR_US_DEFAULT},
59 {11, 2462, LBS_TX_PWR_US_DEFAULT}
62 /* band: 'B/G', region: Europe ETSI */
63 static struct chan_freq_power channel_freq_power_EU_BG[] = {
64 {1, 2412, LBS_TX_PWR_EMEA_DEFAULT},
65 {2, 2417, LBS_TX_PWR_EMEA_DEFAULT},
66 {3, 2422, LBS_TX_PWR_EMEA_DEFAULT},
67 {4, 2427, LBS_TX_PWR_EMEA_DEFAULT},
68 {5, 2432, LBS_TX_PWR_EMEA_DEFAULT},
69 {6, 2437, LBS_TX_PWR_EMEA_DEFAULT},
70 {7, 2442, LBS_TX_PWR_EMEA_DEFAULT},
71 {8, 2447, LBS_TX_PWR_EMEA_DEFAULT},
72 {9, 2452, LBS_TX_PWR_EMEA_DEFAULT},
73 {10, 2457, LBS_TX_PWR_EMEA_DEFAULT},
74 {11, 2462, LBS_TX_PWR_EMEA_DEFAULT},
75 {12, 2467, LBS_TX_PWR_EMEA_DEFAULT},
76 {13, 2472, LBS_TX_PWR_EMEA_DEFAULT}
79 /* band: 'B/G', region: Spain */
80 static struct chan_freq_power channel_freq_power_SPN_BG[] = {
81 {10, 2457, LBS_TX_PWR_DEFAULT},
82 {11, 2462, LBS_TX_PWR_DEFAULT}
85 /* band: 'B/G', region: France */
86 static struct chan_freq_power channel_freq_power_FR_BG[] = {
87 {10, 2457, LBS_TX_PWR_FR_DEFAULT},
88 {11, 2462, LBS_TX_PWR_FR_DEFAULT},
89 {12, 2467, LBS_TX_PWR_FR_DEFAULT},
90 {13, 2472, LBS_TX_PWR_FR_DEFAULT}
93 /* band: 'B/G', region: Japan */
94 static struct chan_freq_power channel_freq_power_JPN_BG[] = {
95 {1, 2412, LBS_TX_PWR_JP_DEFAULT},
96 {2, 2417, LBS_TX_PWR_JP_DEFAULT},
97 {3, 2422, LBS_TX_PWR_JP_DEFAULT},
98 {4, 2427, LBS_TX_PWR_JP_DEFAULT},
99 {5, 2432, LBS_TX_PWR_JP_DEFAULT},
100 {6, 2437, LBS_TX_PWR_JP_DEFAULT},
101 {7, 2442, LBS_TX_PWR_JP_DEFAULT},
102 {8, 2447, LBS_TX_PWR_JP_DEFAULT},
103 {9, 2452, LBS_TX_PWR_JP_DEFAULT},
104 {10, 2457, LBS_TX_PWR_JP_DEFAULT},
105 {11, 2462, LBS_TX_PWR_JP_DEFAULT},
106 {12, 2467, LBS_TX_PWR_JP_DEFAULT},
107 {13, 2472, LBS_TX_PWR_JP_DEFAULT},
108 {14, 2484, LBS_TX_PWR_JP_DEFAULT}
112 * the structure for channel, frequency and power
114 struct region_cfp_table {
116 struct chan_freq_power *cfp_BG;
121 * the structure for the mapping between region and CFP
123 static struct region_cfp_table region_cfp_table[] = {
125 channel_freq_power_US_BG,
126 ARRAY_SIZE(channel_freq_power_US_BG),
129 {0x20, /*CANADA IC */
130 channel_freq_power_US_BG,
131 ARRAY_SIZE(channel_freq_power_US_BG),
134 {0x30, /*EU*/ channel_freq_power_EU_BG,
135 ARRAY_SIZE(channel_freq_power_EU_BG),
138 {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
139 ARRAY_SIZE(channel_freq_power_SPN_BG),
142 {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
143 ARRAY_SIZE(channel_freq_power_FR_BG),
146 {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
147 ARRAY_SIZE(channel_freq_power_JPN_BG),
150 /*Add new region here */
154 * the table to keep region code
156 u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
157 { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
160 * 802.11b/g supported bitrates (in 500Kb/s units)
162 u8 lbs_bg_rates[MAX_RATES] =
163 { 0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
167 * FW rate table. FW refers to rates by their index in this table, not by the
168 * rate value itself. Values of 0x00 are
169 * reserved positions.
171 static u8 fw_data_rates[MAX_RATES] =
172 { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
173 0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
177 * @brief use index to get the data rate
179 * @param idx The index of data rate
180 * @return data rate or 0
182 u32 lbs_fw_index_to_data_rate(u8 idx)
184 if (idx >= sizeof(fw_data_rates))
186 return fw_data_rates[idx];
190 * @brief use rate to get the index
192 * @param rate data rate
195 u8 lbs_data_rate_to_fw_index(u32 rate)
202 for (i = 0; i < sizeof(fw_data_rates); i++) {
203 if (rate == fw_data_rates[i])
210 * Attributes exported through sysfs
214 * @brief Get function for sysfs attribute anycast_mask
216 static ssize_t lbs_anycast_get(struct device *dev,
217 struct device_attribute *attr, char * buf)
219 struct cmd_ds_mesh_access mesh_access;
221 memset(&mesh_access, 0, sizeof(mesh_access));
222 lbs_prepare_and_send_command(to_net_dev(dev)->priv,
224 CMD_ACT_MESH_GET_ANYCAST,
225 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
227 return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
231 * @brief Set function for sysfs attribute anycast_mask
233 static ssize_t lbs_anycast_set(struct device *dev,
234 struct device_attribute *attr, const char * buf, size_t count)
236 struct cmd_ds_mesh_access mesh_access;
239 memset(&mesh_access, 0, sizeof(mesh_access));
240 sscanf(buf, "%x", &datum);
241 mesh_access.data[0] = cpu_to_le32(datum);
243 lbs_prepare_and_send_command((to_net_dev(dev))->priv,
245 CMD_ACT_MESH_SET_ANYCAST,
246 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
250 int lbs_add_rtap(struct lbs_private *priv);
251 void lbs_remove_rtap(struct lbs_private *priv);
254 * Get function for sysfs attribute rtap
256 static ssize_t lbs_rtap_get(struct device *dev,
257 struct device_attribute *attr, char * buf)
259 struct lbs_private *priv = to_net_dev(dev)->priv;
260 struct lbs_adapter *adapter = priv->adapter;
261 return snprintf(buf, 5, "0x%X\n", adapter->monitormode);
265 * Set function for sysfs attribute rtap
267 static ssize_t lbs_rtap_set(struct device *dev,
268 struct device_attribute *attr, const char * buf, size_t count)
271 struct lbs_private *priv = to_net_dev(dev)->priv;
272 struct lbs_adapter *adapter = priv->adapter;
274 sscanf(buf, "%x", &monitor_mode);
275 if (monitor_mode != LBS_MONITOR_OFF) {
276 if(adapter->monitormode == monitor_mode)
278 if (adapter->monitormode == LBS_MONITOR_OFF) {
279 if (adapter->mode == IW_MODE_INFRA)
280 lbs_send_deauthentication(priv);
281 else if (adapter->mode == IW_MODE_ADHOC)
282 lbs_stop_adhoc_network(priv);
285 adapter->monitormode = monitor_mode;
289 if (adapter->monitormode == LBS_MONITOR_OFF)
291 adapter->monitormode = LBS_MONITOR_OFF;
292 lbs_remove_rtap(priv);
294 if (adapter->currenttxskb) {
295 dev_kfree_skb_any(adapter->currenttxskb);
296 adapter->currenttxskb = NULL;
299 /* Wake queues, command thread, etc. */
300 lbs_host_to_card_done(priv);
303 lbs_prepare_and_send_command(priv,
304 CMD_802_11_MONITOR_MODE, CMD_ACT_SET,
305 CMD_OPTION_WAITFORRSP, 0, &adapter->monitormode);
310 * lbs_rtap attribute to be exported per mshX interface
311 * through sysfs (/sys/class/net/mshX/libertas-rtap)
313 static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get,
317 * anycast_mask attribute to be exported per mshX interface
318 * through sysfs (/sys/class/net/mshX/anycast_mask)
320 static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
322 static ssize_t lbs_autostart_enabled_get(struct device *dev,
323 struct device_attribute *attr, char * buf)
325 struct cmd_ds_mesh_access mesh_access;
327 memset(&mesh_access, 0, sizeof(mesh_access));
328 lbs_prepare_and_send_command(to_net_dev(dev)->priv,
330 CMD_ACT_MESH_GET_AUTOSTART_ENABLED,
331 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
333 return sprintf(buf, "%d\n", le32_to_cpu(mesh_access.data[0]));
336 static ssize_t lbs_autostart_enabled_set(struct device *dev,
337 struct device_attribute *attr, const char * buf, size_t count)
339 struct cmd_ds_mesh_access mesh_access;
341 struct lbs_private *priv = (to_net_dev(dev))->priv;
344 memset(&mesh_access, 0, sizeof(mesh_access));
345 sscanf(buf, "%d", &datum);
346 mesh_access.data[0] = cpu_to_le32(datum);
348 ret = lbs_prepare_and_send_command(priv,
350 CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
351 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
353 priv->mesh_autostart_enabled = datum ? 1 : 0;
358 static DEVICE_ATTR(autostart_enabled, 0644,
359 lbs_autostart_enabled_get, lbs_autostart_enabled_set);
361 static struct attribute *lbs_mesh_sysfs_entries[] = {
362 &dev_attr_anycast_mask.attr,
363 &dev_attr_autostart_enabled.attr,
367 static struct attribute_group lbs_mesh_attr_group = {
368 .attrs = lbs_mesh_sysfs_entries,
372 * @brief Check if the device can be open and wait if necessary.
374 * @param dev A pointer to net_device structure
377 * For USB adapter, on some systems the device open handler will be
378 * called before FW ready. Use the following flag check and wait
379 * function to work around the issue.
382 static int pre_open_check(struct net_device *dev)
384 struct lbs_private *priv = (struct lbs_private *) dev->priv;
385 struct lbs_adapter *adapter = priv->adapter;
388 while (!adapter->fw_ready && i < 20) {
390 msleep_interruptible(100);
392 if (!adapter->fw_ready) {
393 lbs_pr_err("firmware not ready\n");
401 * @brief This function opens the device
403 * @param dev A pointer to net_device structure
406 static int lbs_dev_open(struct net_device *dev)
408 struct lbs_private *priv = (struct lbs_private *) dev->priv;
409 struct lbs_adapter *adapter = priv->adapter;
411 lbs_deb_enter(LBS_DEB_NET);
415 if (adapter->connect_status == LBS_CONNECTED)
416 netif_carrier_on(priv->dev);
418 netif_carrier_off(priv->dev);
420 if (priv->mesh_dev) {
421 if (adapter->mesh_connect_status == LBS_CONNECTED)
422 netif_carrier_on(priv->mesh_dev);
424 netif_carrier_off(priv->mesh_dev);
427 lbs_deb_leave(LBS_DEB_NET);
431 * @brief This function opens the mshX interface
433 * @param dev A pointer to net_device structure
436 static int lbs_mesh_open(struct net_device *dev)
438 struct lbs_private *priv = (struct lbs_private *) dev->priv ;
440 if (pre_open_check(dev) == -1)
442 priv->mesh_open = 1 ;
443 netif_wake_queue(priv->mesh_dev);
445 priv->adapter->mesh_connect_status = LBS_CONNECTED;
447 netif_carrier_on(priv->mesh_dev);
448 netif_wake_queue(priv->mesh_dev);
449 if (priv->infra_open == 0)
450 return lbs_dev_open(priv->dev) ;
455 * @brief This function opens the ethX interface
457 * @param dev A pointer to net_device structure
460 static int lbs_open(struct net_device *dev)
462 struct lbs_private *priv = (struct lbs_private *) dev->priv ;
464 if(pre_open_check(dev) == -1)
466 priv->infra_open = 1 ;
467 netif_wake_queue(priv->dev);
469 return lbs_dev_open(priv->dev) ;
473 static int lbs_dev_close(struct net_device *dev)
475 struct lbs_private *priv = dev->priv;
477 lbs_deb_enter(LBS_DEB_NET);
479 netif_carrier_off(priv->dev);
482 lbs_deb_leave(LBS_DEB_NET);
487 * @brief This function closes the mshX interface
489 * @param dev A pointer to net_device structure
492 static int lbs_mesh_close(struct net_device *dev)
494 struct lbs_private *priv = (struct lbs_private *) (dev->priv);
497 netif_stop_queue(priv->mesh_dev);
498 if (priv->infra_open == 0)
499 return lbs_dev_close(dev);
505 * @brief This function closes the ethX interface
507 * @param dev A pointer to net_device structure
510 static int lbs_close(struct net_device *dev)
512 struct lbs_private *priv = (struct lbs_private *) dev->priv;
514 netif_stop_queue(dev);
515 priv->infra_open = 0;
516 if (priv->mesh_open == 0)
517 return lbs_dev_close(dev);
523 static int lbs_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
526 struct lbs_private *priv = dev->priv;
528 lbs_deb_enter(LBS_DEB_TX);
530 /* We could return NETDEV_TX_BUSY here, but I'd actually
531 like to get the point where we can BUG() */
532 if (priv->dnld_sent) {
533 lbs_pr_err("%s while dnld_sent\n", __func__);
534 priv->stats.tx_dropped++;
537 if (priv->adapter->currenttxskb) {
538 lbs_pr_err("%s while TX skb pending\n", __func__);
539 priv->stats.tx_dropped++;
543 netif_stop_queue(priv->dev);
545 netif_stop_queue(priv->mesh_dev);
547 if (lbs_process_tx(priv, skb) == 0)
548 dev->trans_start = jiffies;
550 lbs_deb_leave_args(LBS_DEB_TX, "ret %d", ret);
555 * @brief Mark mesh packets and handover them to lbs_hard_start_xmit
558 static int lbs_mesh_pre_start_xmit(struct sk_buff *skb,
559 struct net_device *dev)
561 struct lbs_private *priv = dev->priv;
564 lbs_deb_enter(LBS_DEB_MESH);
565 if (priv->adapter->monitormode != LBS_MONITOR_OFF) {
566 netif_stop_queue(dev);
572 ret = lbs_hard_start_xmit(skb, priv->mesh_dev);
573 lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
578 * @brief Mark non-mesh packets and handover them to lbs_hard_start_xmit
581 static int lbs_pre_start_xmit(struct sk_buff *skb, struct net_device *dev)
583 struct lbs_private *priv = dev->priv;
586 lbs_deb_enter(LBS_DEB_TX);
588 if (priv->adapter->monitormode != LBS_MONITOR_OFF) {
589 netif_stop_queue(dev);
593 UNSET_MESH_FRAME(skb);
595 ret = lbs_hard_start_xmit(skb, dev);
596 lbs_deb_leave_args(LBS_DEB_TX, "ret %d", ret);
600 static void lbs_tx_timeout(struct net_device *dev)
602 struct lbs_private *priv = (struct lbs_private *) dev->priv;
604 lbs_deb_enter(LBS_DEB_TX);
606 lbs_pr_err("tx watch dog timeout\n");
608 priv->dnld_sent = DNLD_RES_RECEIVED;
609 dev->trans_start = jiffies;
611 if (priv->adapter->currenttxskb) {
612 if (priv->adapter->monitormode != LBS_MONITOR_OFF) {
613 /* If we are here, we have not received feedback from
614 the previous packet. Assume TX_FAIL and move on. */
615 priv->adapter->eventcause = 0x01000000;
616 lbs_send_tx_feedback(priv);
618 wake_up_interruptible(&priv->waitq);
619 } else if (dev == priv->dev) {
620 if (priv->adapter->connect_status == LBS_CONNECTED)
621 netif_wake_queue(priv->dev);
623 } else if (dev == priv->mesh_dev) {
624 if (priv->adapter->mesh_connect_status == LBS_CONNECTED)
625 netif_wake_queue(priv->mesh_dev);
628 lbs_deb_leave(LBS_DEB_TX);
631 void lbs_host_to_card_done(struct lbs_private *priv)
633 struct lbs_adapter *adapter = priv->adapter;
635 priv->dnld_sent = DNLD_RES_RECEIVED;
637 /* Wake main thread if commands are pending */
638 if (!adapter->cur_cmd)
639 wake_up_interruptible(&priv->waitq);
641 /* Don't wake netif queues if we're in monitor mode and
642 a TX packet is already pending. */
643 if (priv->adapter->currenttxskb)
646 if (priv->dev && adapter->connect_status == LBS_CONNECTED)
647 netif_wake_queue(priv->dev);
649 if (priv->mesh_dev && adapter->mesh_connect_status == LBS_CONNECTED)
650 netif_wake_queue(priv->mesh_dev);
652 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
655 * @brief This function returns the network statistics
657 * @param dev A pointer to struct lbs_private structure
658 * @return A pointer to net_device_stats structure
660 static struct net_device_stats *lbs_get_stats(struct net_device *dev)
662 struct lbs_private *priv = (struct lbs_private *) dev->priv;
667 static int lbs_set_mac_address(struct net_device *dev, void *addr)
670 struct lbs_private *priv = (struct lbs_private *) dev->priv;
671 struct lbs_adapter *adapter = priv->adapter;
672 struct sockaddr *phwaddr = addr;
674 lbs_deb_enter(LBS_DEB_NET);
676 /* In case it was called from the mesh device */
679 memset(adapter->current_addr, 0, ETH_ALEN);
681 /* dev->dev_addr is 8 bytes */
682 lbs_deb_hex(LBS_DEB_NET, "dev->dev_addr", dev->dev_addr, ETH_ALEN);
684 lbs_deb_hex(LBS_DEB_NET, "addr", phwaddr->sa_data, ETH_ALEN);
685 memcpy(adapter->current_addr, phwaddr->sa_data, ETH_ALEN);
687 ret = lbs_prepare_and_send_command(priv, CMD_802_11_MAC_ADDRESS,
689 CMD_OPTION_WAITFORRSP, 0, NULL);
692 lbs_deb_net("set MAC address failed\n");
697 lbs_deb_hex(LBS_DEB_NET, "adapter->macaddr", adapter->current_addr, ETH_ALEN);
698 memcpy(dev->dev_addr, adapter->current_addr, ETH_ALEN);
700 memcpy(priv->mesh_dev->dev_addr, adapter->current_addr, ETH_ALEN);
703 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
707 static int lbs_copy_multicast_address(struct lbs_adapter *adapter,
708 struct net_device *dev)
711 struct dev_mc_list *mcptr = dev->mc_list;
713 for (i = 0; i < dev->mc_count; i++) {
714 memcpy(&adapter->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
722 static void lbs_set_multicast_list(struct net_device *dev)
724 struct lbs_private *priv = dev->priv;
725 struct lbs_adapter *adapter = priv->adapter;
727 DECLARE_MAC_BUF(mac);
729 lbs_deb_enter(LBS_DEB_NET);
731 oldpacketfilter = adapter->currentpacketfilter;
733 if (dev->flags & IFF_PROMISC) {
734 lbs_deb_net("enable promiscuous mode\n");
735 adapter->currentpacketfilter |=
736 CMD_ACT_MAC_PROMISCUOUS_ENABLE;
737 adapter->currentpacketfilter &=
738 ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
739 CMD_ACT_MAC_MULTICAST_ENABLE);
742 adapter->currentpacketfilter &=
743 ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
745 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
746 MRVDRV_MAX_MULTICAST_LIST_SIZE) {
747 lbs_deb_net( "enabling all multicast\n");
748 adapter->currentpacketfilter |=
749 CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
750 adapter->currentpacketfilter &=
751 ~CMD_ACT_MAC_MULTICAST_ENABLE;
753 adapter->currentpacketfilter &=
754 ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
756 if (!dev->mc_count) {
757 lbs_deb_net("no multicast addresses, "
758 "disabling multicast\n");
759 adapter->currentpacketfilter &=
760 ~CMD_ACT_MAC_MULTICAST_ENABLE;
764 adapter->currentpacketfilter |=
765 CMD_ACT_MAC_MULTICAST_ENABLE;
767 adapter->nr_of_multicastmacaddr =
768 lbs_copy_multicast_address(adapter, dev);
770 lbs_deb_net("multicast addresses: %d\n",
773 for (i = 0; i < dev->mc_count; i++) {
774 lbs_deb_net("Multicast address %d:%s\n",
776 adapter->multicastlist[i]));
778 /* send multicast addresses to firmware */
779 lbs_prepare_and_send_command(priv,
780 CMD_MAC_MULTICAST_ADR,
787 if (adapter->currentpacketfilter != oldpacketfilter) {
788 lbs_set_mac_packet_filter(priv);
791 lbs_deb_leave(LBS_DEB_NET);
795 * @brief This function handles the major jobs in the LBS driver.
796 * It handles all events generated by firmware, RX data received
797 * from firmware and TX data sent from kernel.
799 * @param data A pointer to lbs_thread structure
802 static int lbs_thread(void *data)
804 struct net_device *dev = data;
805 struct lbs_private *priv = dev->priv;
806 struct lbs_adapter *adapter = priv->adapter;
810 lbs_deb_enter(LBS_DEB_THREAD);
812 init_waitqueue_entry(&wait, current);
817 lbs_deb_thread( "main-thread 111: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
818 adapter->intcounter, adapter->currenttxskb, priv->dnld_sent);
820 add_wait_queue(&priv->waitq, &wait);
821 set_current_state(TASK_INTERRUPTIBLE);
822 spin_lock_irq(&adapter->driver_lock);
824 if ((adapter->psstate == PS_STATE_SLEEP) ||
825 (!adapter->intcounter && (priv->dnld_sent || adapter->cur_cmd || list_empty(&adapter->cmdpendingq)))) {
826 lbs_deb_thread("main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
827 adapter->connect_status, adapter->intcounter,
828 adapter->psmode, adapter->psstate);
829 spin_unlock_irq(&adapter->driver_lock);
832 spin_unlock_irq(&adapter->driver_lock);
834 lbs_deb_thread("main-thread 222 (waking up): intcounter=%d currenttxskb=%p dnld_sent=%d\n",
835 adapter->intcounter, adapter->currenttxskb, priv->dnld_sent);
837 set_current_state(TASK_RUNNING);
838 remove_wait_queue(&priv->waitq, &wait);
841 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
842 adapter->intcounter, adapter->currenttxskb, priv->dnld_sent);
844 if (kthread_should_stop() || adapter->surpriseremoved) {
845 lbs_deb_thread("main-thread: break from main thread: surpriseremoved=0x%x\n",
846 adapter->surpriseremoved);
851 spin_lock_irq(&adapter->driver_lock);
853 if (adapter->intcounter) {
856 adapter->intcounter = 0;
857 int_status = priv->hw_get_int_status(priv, &ireg);
860 lbs_deb_thread("main-thread: reading HOST_INT_STATUS_REG failed\n");
861 spin_unlock_irq(&adapter->driver_lock);
864 adapter->hisregcpy |= ireg;
867 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
868 adapter->intcounter, adapter->currenttxskb, priv->dnld_sent);
870 /* command response? */
871 if (adapter->hisregcpy & MRVDRV_CMD_UPLD_RDY) {
872 lbs_deb_thread("main-thread: cmd response ready\n");
874 adapter->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY;
875 spin_unlock_irq(&adapter->driver_lock);
876 lbs_process_rx_command(priv);
877 spin_lock_irq(&adapter->driver_lock);
881 if (adapter->hisregcpy & MRVDRV_CARDEVENT) {
882 lbs_deb_thread("main-thread: Card Event Activity\n");
884 adapter->hisregcpy &= ~MRVDRV_CARDEVENT;
886 if (priv->hw_read_event_cause(priv)) {
887 lbs_pr_alert("main-thread: hw_read_event_cause failed\n");
888 spin_unlock_irq(&adapter->driver_lock);
891 spin_unlock_irq(&adapter->driver_lock);
892 lbs_process_event(priv);
894 spin_unlock_irq(&adapter->driver_lock);
896 /* Check if we need to confirm Sleep Request received previously */
897 if (adapter->psstate == PS_STATE_PRE_SLEEP &&
898 !priv->dnld_sent && !adapter->cur_cmd) {
899 if (adapter->connect_status == LBS_CONNECTED) {
900 lbs_deb_thread("main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p dnld_sent=%d cur_cmd=%p, confirm now\n",
901 adapter->intcounter, adapter->currenttxskb, priv->dnld_sent, adapter->cur_cmd);
903 lbs_ps_confirm_sleep(priv, (u16) adapter->psmode);
905 /* workaround for firmware sending
906 * deauth/linkloss event immediately
907 * after sleep request; remove this
908 * after firmware fixes it
910 adapter->psstate = PS_STATE_AWAKE;
911 lbs_pr_alert("main-thread: ignore PS_SleepConfirm in non-connected state\n");
915 /* The PS state is changed during processing of Sleep Request
918 if ((priv->adapter->psstate == PS_STATE_SLEEP) ||
919 (priv->adapter->psstate == PS_STATE_PRE_SLEEP))
922 /* Execute the next command */
923 if (!priv->dnld_sent && !priv->adapter->cur_cmd)
924 lbs_execute_next_command(priv);
926 /* Wake-up command waiters which can't sleep in
927 * lbs_prepare_and_send_command
929 if (!list_empty(&adapter->cmdpendingq))
930 wake_up_all(&adapter->cmd_pending);
932 lbs_tx_runqueue(priv);
935 del_timer(&adapter->command_timer);
936 wake_up_all(&adapter->cmd_pending);
938 lbs_deb_leave(LBS_DEB_THREAD);
943 * @brief This function downloads firmware image, gets
944 * HW spec from firmware and set basic parameters to
947 * @param priv A pointer to struct lbs_private structure
950 static int lbs_setup_firmware(struct lbs_private *priv)
953 struct lbs_adapter *adapter = priv->adapter;
954 struct cmd_ds_mesh_access mesh_access;
956 lbs_deb_enter(LBS_DEB_FW);
959 * Read MAC address from HW
961 memset(adapter->current_addr, 0xff, ETH_ALEN);
963 ret = lbs_prepare_and_send_command(priv, CMD_GET_HW_SPEC,
964 0, CMD_OPTION_WAITFORRSP, 0, NULL);
971 lbs_set_mac_packet_filter(priv);
973 /* Get the supported Data rates */
974 ret = lbs_prepare_and_send_command(priv, CMD_802_11_DATA_RATE,
976 CMD_OPTION_WAITFORRSP, 0, NULL);
983 /* Disable mesh autostart */
984 if (priv->mesh_dev) {
985 memset(&mesh_access, 0, sizeof(mesh_access));
986 mesh_access.data[0] = cpu_to_le32(0);
987 ret = lbs_prepare_and_send_command(priv,
989 CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
990 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
995 priv->mesh_autostart_enabled = 0;
1000 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
1005 * This function handles the timeout of command sending.
1006 * It will re-send the same command again.
1008 static void command_timer_fn(unsigned long data)
1010 struct lbs_private *priv = (struct lbs_private *)data;
1011 struct lbs_adapter *adapter = priv->adapter;
1012 struct cmd_ctrl_node *ptempnode;
1013 struct cmd_ds_command *cmd;
1014 unsigned long flags;
1016 ptempnode = adapter->cur_cmd;
1017 if (ptempnode == NULL) {
1018 lbs_deb_fw("ptempnode empty\n");
1022 cmd = (struct cmd_ds_command *)ptempnode->bufvirtualaddr;
1024 lbs_deb_fw("cmd is NULL\n");
1028 lbs_deb_fw("command_timer_fn fired, cmd %x\n", cmd->command);
1030 if (!adapter->fw_ready)
1033 spin_lock_irqsave(&adapter->driver_lock, flags);
1034 adapter->cur_cmd = NULL;
1035 spin_unlock_irqrestore(&adapter->driver_lock, flags);
1037 lbs_deb_fw("re-sending same command because of timeout\n");
1038 lbs_queue_cmd(adapter, ptempnode, 0);
1040 wake_up_interruptible(&priv->waitq);
1045 static int lbs_init_adapter(struct lbs_private *priv)
1047 struct lbs_adapter *adapter = priv->adapter;
1051 /* Allocate buffer to store the BSSID list */
1052 bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
1053 adapter->networks = kzalloc(bufsize, GFP_KERNEL);
1054 if (!adapter->networks) {
1055 lbs_pr_err("Out of memory allocating beacons\n");
1060 /* Initialize scan result lists */
1061 INIT_LIST_HEAD(&adapter->network_free_list);
1062 INIT_LIST_HEAD(&adapter->network_list);
1063 for (i = 0; i < MAX_NETWORK_COUNT; i++) {
1064 list_add_tail(&adapter->networks[i].list,
1065 &adapter->network_free_list);
1068 adapter->lbs_ps_confirm_sleep.seqnum = cpu_to_le16(++adapter->seqnum);
1069 adapter->lbs_ps_confirm_sleep.command =
1070 cpu_to_le16(CMD_802_11_PS_MODE);
1071 adapter->lbs_ps_confirm_sleep.size =
1072 cpu_to_le16(sizeof(struct PS_CMD_ConfirmSleep));
1073 adapter->lbs_ps_confirm_sleep.action =
1074 cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
1076 memset(adapter->current_addr, 0xff, ETH_ALEN);
1078 adapter->connect_status = LBS_DISCONNECTED;
1079 adapter->mesh_connect_status = LBS_DISCONNECTED;
1080 adapter->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
1081 adapter->mode = IW_MODE_INFRA;
1082 adapter->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
1083 adapter->currentpacketfilter = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
1084 adapter->radioon = RADIO_ON;
1085 adapter->auto_rate = 1;
1086 adapter->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
1087 adapter->psmode = LBS802_11POWERMODECAM;
1088 adapter->psstate = PS_STATE_FULL_POWER;
1090 mutex_init(&adapter->lock);
1092 memset(&adapter->tx_queue_ps, 0, NR_TX_QUEUE*sizeof(struct sk_buff*));
1093 adapter->tx_queue_idx = 0;
1094 spin_lock_init(&adapter->txqueue_lock);
1096 setup_timer(&adapter->command_timer, command_timer_fn,
1097 (unsigned long)priv);
1099 INIT_LIST_HEAD(&adapter->cmdfreeq);
1100 INIT_LIST_HEAD(&adapter->cmdpendingq);
1102 spin_lock_init(&adapter->driver_lock);
1103 init_waitqueue_head(&adapter->cmd_pending);
1105 /* Allocate the command buffers */
1106 if (lbs_allocate_cmd_buffer(priv)) {
1107 lbs_pr_err("Out of memory allocating command buffers\n");
1115 static void lbs_free_adapter(struct lbs_private *priv)
1117 struct lbs_adapter *adapter = priv->adapter;
1120 lbs_deb_fw("why double free adapter?\n");
1124 lbs_deb_fw("free command buffer\n");
1125 lbs_free_cmd_buffer(priv);
1127 lbs_deb_fw("free command_timer\n");
1128 del_timer(&adapter->command_timer);
1130 lbs_deb_fw("free scan results table\n");
1131 kfree(adapter->networks);
1132 adapter->networks = NULL;
1134 /* Free the adapter object itself */
1135 lbs_deb_fw("free adapter\n");
1137 priv->adapter = NULL;
1141 * @brief This function adds the card. it will probe the
1142 * card, allocate the lbs_priv and initialize the device.
1144 * @param card A pointer to card
1145 * @return A pointer to struct lbs_private structure
1147 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
1149 struct net_device *dev = NULL;
1150 struct lbs_private *priv = NULL;
1152 lbs_deb_enter(LBS_DEB_NET);
1154 /* Allocate an Ethernet device and register it */
1155 dev = alloc_etherdev(sizeof(struct lbs_private));
1157 lbs_pr_err("init ethX device failed\n");
1162 /* allocate buffer for struct lbs_adapter */
1163 priv->adapter = kzalloc(sizeof(struct lbs_adapter), GFP_KERNEL);
1164 if (!priv->adapter) {
1165 lbs_pr_err("allocate buffer for struct lbs_adapter failed\n");
1169 if (lbs_init_adapter(priv)) {
1170 lbs_pr_err("failed to initialize adapter structure.\n");
1171 goto err_init_adapter;
1176 priv->mesh_open = 0;
1177 priv->infra_open = 0;
1179 /* Setup the OS Interface to our functions */
1180 dev->open = lbs_open;
1181 dev->hard_start_xmit = lbs_pre_start_xmit;
1182 dev->stop = lbs_close;
1183 dev->set_mac_address = lbs_set_mac_address;
1184 dev->tx_timeout = lbs_tx_timeout;
1185 dev->get_stats = lbs_get_stats;
1186 dev->watchdog_timeo = 5 * HZ;
1187 dev->ethtool_ops = &lbs_ethtool_ops;
1189 dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
1191 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1192 dev->set_multicast_list = lbs_set_multicast_list;
1194 SET_NETDEV_DEV(dev, dmdev);
1196 priv->rtap_net_dev = NULL;
1198 lbs_deb_thread("Starting main thread...\n");
1199 init_waitqueue_head(&priv->waitq);
1200 priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1201 if (IS_ERR(priv->main_thread)) {
1202 lbs_deb_thread("Error creating main thread.\n");
1203 goto err_init_adapter;
1206 priv->work_thread = create_singlethread_workqueue("lbs_worker");
1207 INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1208 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1209 INIT_WORK(&priv->sync_channel, lbs_sync_channel);
1214 lbs_free_adapter(priv);
1221 lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
1224 EXPORT_SYMBOL_GPL(lbs_add_card);
1227 int lbs_remove_card(struct lbs_private *priv)
1229 struct lbs_adapter *adapter = priv->adapter;
1230 struct net_device *dev = priv->dev;
1231 union iwreq_data wrqu;
1233 lbs_deb_enter(LBS_DEB_MAIN);
1235 lbs_remove_rtap(priv);
1238 device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1240 cancel_delayed_work(&priv->scan_work);
1241 cancel_delayed_work(&priv->assoc_work);
1242 destroy_workqueue(priv->work_thread);
1244 if (adapter->psmode == LBS802_11POWERMODEMAX_PSP) {
1245 adapter->psmode = LBS802_11POWERMODECAM;
1246 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1249 memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1250 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1251 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1253 /* Stop the thread servicing the interrupts */
1254 adapter->surpriseremoved = 1;
1255 kthread_stop(priv->main_thread);
1257 lbs_free_adapter(priv);
1262 lbs_deb_leave(LBS_DEB_MAIN);
1265 EXPORT_SYMBOL_GPL(lbs_remove_card);
1268 int lbs_start_card(struct lbs_private *priv)
1270 struct net_device *dev = priv->dev;
1273 lbs_deb_enter(LBS_DEB_MAIN);
1275 /* poke the firmware */
1276 ret = lbs_setup_firmware(priv);
1283 if (register_netdev(dev)) {
1284 lbs_pr_err("cannot register ethX device\n");
1287 if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1288 lbs_pr_err("cannot register lbs_rtap attribute\n");
1290 lbs_debugfs_init_one(priv, dev);
1292 lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1297 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1300 EXPORT_SYMBOL_GPL(lbs_start_card);
1303 int lbs_stop_card(struct lbs_private *priv)
1305 struct net_device *dev = priv->dev;
1307 struct cmd_ctrl_node *cmdnode;
1308 unsigned long flags;
1310 lbs_deb_enter(LBS_DEB_MAIN);
1312 netif_stop_queue(priv->dev);
1313 netif_carrier_off(priv->dev);
1315 lbs_debugfs_remove_one(priv);
1317 /* Flush pending command nodes */
1318 spin_lock_irqsave(&priv->adapter->driver_lock, flags);
1319 list_for_each_entry(cmdnode, &priv->adapter->cmdpendingq, list) {
1320 cmdnode->cmdwaitqwoken = 1;
1321 wake_up_interruptible(&cmdnode->cmdwait_q);
1323 spin_unlock_irqrestore(&priv->adapter->driver_lock, flags);
1325 unregister_netdev(dev);
1327 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1330 EXPORT_SYMBOL_GPL(lbs_stop_card);
1334 * @brief This function adds mshX interface
1336 * @param priv A pointer to the struct lbs_private structure
1337 * @return 0 if successful, -X otherwise
1339 int lbs_add_mesh(struct lbs_private *priv, struct device *dev)
1341 struct net_device *mesh_dev = NULL;
1344 lbs_deb_enter(LBS_DEB_MESH);
1346 /* Allocate a virtual mesh device */
1347 if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1348 lbs_deb_mesh("init mshX device failed\n");
1352 mesh_dev->priv = priv;
1353 priv->mesh_dev = mesh_dev;
1355 mesh_dev->open = lbs_mesh_open;
1356 mesh_dev->hard_start_xmit = lbs_mesh_pre_start_xmit;
1357 mesh_dev->stop = lbs_mesh_close;
1358 mesh_dev->get_stats = lbs_get_stats;
1359 mesh_dev->set_mac_address = lbs_set_mac_address;
1360 mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1361 memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1362 sizeof(priv->dev->dev_addr));
1364 SET_NETDEV_DEV(priv->mesh_dev, dev);
1367 mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1369 /* Register virtual mesh interface */
1370 ret = register_netdev(mesh_dev);
1372 lbs_pr_err("cannot register mshX virtual interface\n");
1376 ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1378 goto err_unregister;
1380 /* Everything successful */
1385 unregister_netdev(mesh_dev);
1388 free_netdev(mesh_dev);
1391 lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1394 EXPORT_SYMBOL_GPL(lbs_add_mesh);
1397 void lbs_remove_mesh(struct lbs_private *priv)
1399 struct net_device *mesh_dev;
1401 lbs_deb_enter(LBS_DEB_MAIN);
1406 mesh_dev = priv->mesh_dev;
1408 netif_stop_queue(mesh_dev);
1409 netif_carrier_off(priv->mesh_dev);
1411 sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1412 unregister_netdev(mesh_dev);
1414 priv->mesh_dev = NULL ;
1415 free_netdev(mesh_dev);
1418 lbs_deb_leave(LBS_DEB_MAIN);
1420 EXPORT_SYMBOL_GPL(lbs_remove_mesh);
1423 * @brief This function finds the CFP in
1424 * region_cfp_table based on region and band parameter.
1426 * @param region The region code
1427 * @param band The band
1428 * @param cfp_no A pointer to CFP number
1429 * @return A pointer to CFP
1431 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1435 lbs_deb_enter(LBS_DEB_MAIN);
1437 end = ARRAY_SIZE(region_cfp_table);
1439 for (i = 0; i < end ; i++) {
1440 lbs_deb_main("region_cfp_table[i].region=%d\n",
1441 region_cfp_table[i].region);
1442 if (region_cfp_table[i].region == region) {
1443 *cfp_no = region_cfp_table[i].cfp_no_BG;
1444 lbs_deb_leave(LBS_DEB_MAIN);
1445 return region_cfp_table[i].cfp_BG;
1449 lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1453 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1455 struct lbs_adapter *adapter = priv->adapter;
1459 struct chan_freq_power *cfp;
1462 lbs_deb_enter(LBS_DEB_MAIN);
1464 memset(adapter->region_channel, 0, sizeof(adapter->region_channel));
1467 cfp = lbs_get_region_cfp_table(region, band, &cfp_no);
1469 adapter->region_channel[i].nrcfp = cfp_no;
1470 adapter->region_channel[i].CFP = cfp;
1472 lbs_deb_main("wrong region code %#x in band B/G\n",
1477 adapter->region_channel[i].valid = 1;
1478 adapter->region_channel[i].region = region;
1479 adapter->region_channel[i].band = band;
1483 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1488 * @brief This function handles the interrupt. it will change PS
1489 * state if applicable. it will wake up main_thread to handle
1490 * the interrupt event as well.
1492 * @param dev A pointer to net_device structure
1495 void lbs_interrupt(struct net_device *dev)
1497 struct lbs_private *priv = dev->priv;
1499 lbs_deb_enter(LBS_DEB_THREAD);
1501 lbs_deb_thread("lbs_interrupt: intcounter=%d\n",
1502 priv->adapter->intcounter);
1504 priv->adapter->intcounter++;
1506 if (priv->adapter->psstate == PS_STATE_SLEEP) {
1507 priv->adapter->psstate = PS_STATE_AWAKE;
1508 netif_wake_queue(dev);
1510 netif_wake_queue(priv->mesh_dev);
1513 wake_up_interruptible(&priv->waitq);
1515 lbs_deb_leave(LBS_DEB_THREAD);
1517 EXPORT_SYMBOL_GPL(lbs_interrupt);
1519 int lbs_reset_device(struct lbs_private *priv)
1523 lbs_deb_enter(LBS_DEB_MAIN);
1524 ret = lbs_prepare_and_send_command(priv, CMD_802_11_RESET,
1525 CMD_ACT_HALT, 0, 0, NULL);
1526 msleep_interruptible(10);
1528 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1531 EXPORT_SYMBOL_GPL(lbs_reset_device);
1533 static int __init lbs_init_module(void)
1535 lbs_deb_enter(LBS_DEB_MAIN);
1537 lbs_deb_leave(LBS_DEB_MAIN);
1541 static void __exit lbs_exit_module(void)
1543 lbs_deb_enter(LBS_DEB_MAIN);
1545 lbs_debugfs_remove();
1547 lbs_deb_leave(LBS_DEB_MAIN);
1551 * rtap interface support fuctions
1554 static int lbs_rtap_open(struct net_device *dev)
1556 netif_carrier_off(dev);
1557 netif_stop_queue(dev);
1561 static int lbs_rtap_stop(struct net_device *dev)
1566 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1568 netif_stop_queue(dev);
1572 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1574 struct lbs_private *priv = dev->priv;
1575 return &priv->ieee->stats;
1579 void lbs_remove_rtap(struct lbs_private *priv)
1581 if (priv->rtap_net_dev == NULL)
1583 unregister_netdev(priv->rtap_net_dev);
1584 free_ieee80211(priv->rtap_net_dev);
1585 priv->rtap_net_dev = NULL;
1588 int lbs_add_rtap(struct lbs_private *priv)
1592 if (priv->rtap_net_dev)
1595 priv->rtap_net_dev = alloc_ieee80211(0);
1596 if (priv->rtap_net_dev == NULL)
1600 priv->ieee = netdev_priv(priv->rtap_net_dev);
1602 strcpy(priv->rtap_net_dev->name, "rtap%d");
1604 priv->rtap_net_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1605 priv->rtap_net_dev->open = lbs_rtap_open;
1606 priv->rtap_net_dev->stop = lbs_rtap_stop;
1607 priv->rtap_net_dev->get_stats = lbs_rtap_get_stats;
1608 priv->rtap_net_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1609 priv->rtap_net_dev->set_multicast_list = lbs_set_multicast_list;
1610 priv->rtap_net_dev->priv = priv;
1612 priv->ieee->iw_mode = IW_MODE_MONITOR;
1614 rc = register_netdev(priv->rtap_net_dev);
1616 free_ieee80211(priv->rtap_net_dev);
1617 priv->rtap_net_dev = NULL;
1625 module_init(lbs_init_module);
1626 module_exit(lbs_exit_module);
1628 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1629 MODULE_AUTHOR("Marvell International Ltd.");
1630 MODULE_LICENSE("GPL");