/** * This file contains the major functions in WLAN * driver. It includes init, exit, open, close and main * thread etc.. */ #include #include #include #include #include #include #include #include #include #include "host.h" #include "decl.h" #include "dev.h" #include "wext.h" #include "debugfs.h" #include "assoc.h" #include "join.h" #define DRIVER_RELEASE_VERSION "323.p0" const char libertas_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION #ifdef DEBUG "-dbg" #endif ""; /* Module parameters */ unsigned int libertas_debug = 0; module_param(libertas_debug, int, 0644); EXPORT_SYMBOL_GPL(libertas_debug); #define WLAN_TX_PWR_DEFAULT 20 /*100mW */ #define WLAN_TX_PWR_US_DEFAULT 20 /*100mW */ #define WLAN_TX_PWR_JP_DEFAULT 16 /*50mW */ #define WLAN_TX_PWR_FR_DEFAULT 20 /*100mW */ #define WLAN_TX_PWR_EMEA_DEFAULT 20 /*100mW */ /* Format { channel, frequency (MHz), maxtxpower } */ /* band: 'B/G', region: USA FCC/Canada IC */ static struct chan_freq_power channel_freq_power_US_BG[] = { {1, 2412, WLAN_TX_PWR_US_DEFAULT}, {2, 2417, WLAN_TX_PWR_US_DEFAULT}, {3, 2422, WLAN_TX_PWR_US_DEFAULT}, {4, 2427, WLAN_TX_PWR_US_DEFAULT}, {5, 2432, WLAN_TX_PWR_US_DEFAULT}, {6, 2437, WLAN_TX_PWR_US_DEFAULT}, {7, 2442, WLAN_TX_PWR_US_DEFAULT}, {8, 2447, WLAN_TX_PWR_US_DEFAULT}, {9, 2452, WLAN_TX_PWR_US_DEFAULT}, {10, 2457, WLAN_TX_PWR_US_DEFAULT}, {11, 2462, WLAN_TX_PWR_US_DEFAULT} }; /* band: 'B/G', region: Europe ETSI */ static struct chan_freq_power channel_freq_power_EU_BG[] = { {1, 2412, WLAN_TX_PWR_EMEA_DEFAULT}, {2, 2417, WLAN_TX_PWR_EMEA_DEFAULT}, {3, 2422, WLAN_TX_PWR_EMEA_DEFAULT}, {4, 2427, WLAN_TX_PWR_EMEA_DEFAULT}, {5, 2432, WLAN_TX_PWR_EMEA_DEFAULT}, {6, 2437, WLAN_TX_PWR_EMEA_DEFAULT}, {7, 2442, WLAN_TX_PWR_EMEA_DEFAULT}, {8, 2447, WLAN_TX_PWR_EMEA_DEFAULT}, {9, 2452, WLAN_TX_PWR_EMEA_DEFAULT}, {10, 2457, WLAN_TX_PWR_EMEA_DEFAULT}, {11, 2462, WLAN_TX_PWR_EMEA_DEFAULT}, {12, 2467, WLAN_TX_PWR_EMEA_DEFAULT}, {13, 2472, WLAN_TX_PWR_EMEA_DEFAULT} }; /* band: 'B/G', region: Spain */ static struct chan_freq_power channel_freq_power_SPN_BG[] = { {10, 2457, WLAN_TX_PWR_DEFAULT}, {11, 2462, WLAN_TX_PWR_DEFAULT} }; /* band: 'B/G', region: France */ static struct chan_freq_power channel_freq_power_FR_BG[] = { {10, 2457, WLAN_TX_PWR_FR_DEFAULT}, {11, 2462, WLAN_TX_PWR_FR_DEFAULT}, {12, 2467, WLAN_TX_PWR_FR_DEFAULT}, {13, 2472, WLAN_TX_PWR_FR_DEFAULT} }; /* band: 'B/G', region: Japan */ static struct chan_freq_power channel_freq_power_JPN_BG[] = { {1, 2412, WLAN_TX_PWR_JP_DEFAULT}, {2, 2417, WLAN_TX_PWR_JP_DEFAULT}, {3, 2422, WLAN_TX_PWR_JP_DEFAULT}, {4, 2427, WLAN_TX_PWR_JP_DEFAULT}, {5, 2432, WLAN_TX_PWR_JP_DEFAULT}, {6, 2437, WLAN_TX_PWR_JP_DEFAULT}, {7, 2442, WLAN_TX_PWR_JP_DEFAULT}, {8, 2447, WLAN_TX_PWR_JP_DEFAULT}, {9, 2452, WLAN_TX_PWR_JP_DEFAULT}, {10, 2457, WLAN_TX_PWR_JP_DEFAULT}, {11, 2462, WLAN_TX_PWR_JP_DEFAULT}, {12, 2467, WLAN_TX_PWR_JP_DEFAULT}, {13, 2472, WLAN_TX_PWR_JP_DEFAULT}, {14, 2484, WLAN_TX_PWR_JP_DEFAULT} }; /** * the structure for channel, frequency and power */ struct region_cfp_table { u8 region; struct chan_freq_power *cfp_BG; int cfp_no_BG; }; /** * the structure for the mapping between region and CFP */ static struct region_cfp_table region_cfp_table[] = { {0x10, /*US FCC */ channel_freq_power_US_BG, sizeof(channel_freq_power_US_BG) / sizeof(struct chan_freq_power), } , {0x20, /*CANADA IC */ channel_freq_power_US_BG, sizeof(channel_freq_power_US_BG) / sizeof(struct chan_freq_power), } , {0x30, /*EU*/ channel_freq_power_EU_BG, sizeof(channel_freq_power_EU_BG) / sizeof(struct chan_freq_power), } , {0x31, /*SPAIN*/ channel_freq_power_SPN_BG, sizeof(channel_freq_power_SPN_BG) / sizeof(struct chan_freq_power), } , {0x32, /*FRANCE*/ channel_freq_power_FR_BG, sizeof(channel_freq_power_FR_BG) / sizeof(struct chan_freq_power), } , {0x40, /*JAPAN*/ channel_freq_power_JPN_BG, sizeof(channel_freq_power_JPN_BG) / sizeof(struct chan_freq_power), } , /*Add new region here */ }; /** * the table to keep region code */ u16 libertas_region_code_to_index[MRVDRV_MAX_REGION_CODE] = { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 }; /** * 802.11b/g supported bitrates (in 500Kb/s units) */ u8 libertas_bg_rates[MAX_RATES] = { 0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c, 0x00, 0x00 }; /** * FW rate table. FW refers to rates by their index in this table, not by the * rate value itself. Values of 0x00 are * reserved positions. */ static u8 fw_data_rates[MAX_RATES] = { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00 }; /** * @brief use index to get the data rate * * @param idx The index of data rate * @return data rate or 0 */ u32 libertas_fw_index_to_data_rate(u8 idx) { if (idx >= sizeof(fw_data_rates)) idx = 0; return fw_data_rates[idx]; } /** * @brief use rate to get the index * * @param rate data rate * @return index or 0 */ u8 libertas_data_rate_to_fw_index(u32 rate) { u8 i; if (!rate) return 0; for (i = 0; i < sizeof(fw_data_rates); i++) { if (rate == fw_data_rates[i]) return i; } return 0; } /** * Attributes exported through sysfs */ /** * @brief Get function for sysfs attribute anycast_mask */ static ssize_t libertas_anycast_get(struct device * dev, struct device_attribute *attr, char * buf) { struct cmd_ds_mesh_access mesh_access; memset(&mesh_access, 0, sizeof(mesh_access)); libertas_prepare_and_send_command(to_net_dev(dev)->priv, CMD_MESH_ACCESS, CMD_ACT_MESH_GET_ANYCAST, CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access); return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0])); } /** * @brief Set function for sysfs attribute anycast_mask */ static ssize_t libertas_anycast_set(struct device * dev, struct device_attribute *attr, const char * buf, size_t count) { struct cmd_ds_mesh_access mesh_access; uint32_t datum; memset(&mesh_access, 0, sizeof(mesh_access)); sscanf(buf, "%x", &datum); mesh_access.data[0] = cpu_to_le32(datum); libertas_prepare_and_send_command((to_net_dev(dev))->priv, CMD_MESH_ACCESS, CMD_ACT_MESH_SET_ANYCAST, CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access); return strlen(buf); } int libertas_add_rtap(wlan_private *priv); void libertas_remove_rtap(wlan_private *priv); /** * Get function for sysfs attribute rtap */ static ssize_t libertas_rtap_get(struct device * dev, struct device_attribute *attr, char * buf) { wlan_private *priv = (wlan_private *) dev->driver_data; wlan_adapter *adapter = priv->adapter; return snprintf(buf, 5, "0x%X\n", adapter->monitormode); } /** * Set function for sysfs attribute rtap */ static ssize_t libertas_rtap_set(struct device * dev, struct device_attribute *attr, const char * buf, size_t count) { int monitor_mode; wlan_private *priv = (wlan_private *) dev->driver_data; wlan_adapter *adapter = priv->adapter; sscanf(buf, "%x", &monitor_mode); if (monitor_mode != WLAN_MONITOR_OFF) { if(adapter->monitormode == monitor_mode) return strlen(buf); if (adapter->monitormode == WLAN_MONITOR_OFF) { if (adapter->mode == IW_MODE_INFRA) libertas_send_deauthentication(priv); else if (adapter->mode == IW_MODE_ADHOC) libertas_stop_adhoc_network(priv); libertas_add_rtap(priv); } adapter->monitormode = monitor_mode; } else { if(adapter->monitormode == WLAN_MONITOR_OFF) return strlen(buf); adapter->monitormode = WLAN_MONITOR_OFF; libertas_remove_rtap(priv); netif_wake_queue(priv->dev); netif_wake_queue(priv->mesh_dev); } libertas_prepare_and_send_command(priv, CMD_802_11_MONITOR_MODE, CMD_ACT_SET, CMD_OPTION_WAITFORRSP, 0, &adapter->monitormode); return strlen(buf); } /** * libertas_rtap attribute to be exported per mshX interface * through sysfs (/sys/class/net/mshX/libertas-rtap) */ static DEVICE_ATTR(libertas_rtap, 0644, libertas_rtap_get, libertas_rtap_set ); /** * anycast_mask attribute to be exported per mshX interface * through sysfs (/sys/class/net/mshX/anycast_mask) */ static DEVICE_ATTR(anycast_mask, 0644, libertas_anycast_get, libertas_anycast_set); static ssize_t libertas_autostart_enabled_get(struct device * dev, struct device_attribute *attr, char * buf) { struct cmd_ds_mesh_access mesh_access; memset(&mesh_access, 0, sizeof(mesh_access)); libertas_prepare_and_send_command(to_net_dev(dev)->priv, CMD_MESH_ACCESS, CMD_ACT_MESH_GET_AUTOSTART_ENABLED, CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access); return sprintf(buf, "%d\n", le32_to_cpu(mesh_access.data[0])); } static ssize_t libertas_autostart_enabled_set(struct device * dev, struct device_attribute *attr, const char * buf, size_t count) { struct cmd_ds_mesh_access mesh_access; uint32_t datum; wlan_private * priv = (to_net_dev(dev))->priv; int ret; memset(&mesh_access, 0, sizeof(mesh_access)); sscanf(buf, "%d", &datum); mesh_access.data[0] = cpu_to_le32(datum); ret = libertas_prepare_and_send_command(priv, CMD_MESH_ACCESS, CMD_ACT_MESH_SET_AUTOSTART_ENABLED, CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access); if (ret == 0) priv->mesh_autostart_enabled = datum ? 1 : 0; return strlen(buf); } static DEVICE_ATTR(autostart_enabled, 0644, libertas_autostart_enabled_get, libertas_autostart_enabled_set); static struct attribute *libertas_mesh_sysfs_entries[] = { &dev_attr_anycast_mask.attr, &dev_attr_autostart_enabled.attr, NULL, }; static struct attribute_group libertas_mesh_attr_group = { .attrs = libertas_mesh_sysfs_entries, }; /** * @brief Check if the device can be open and wait if necessary. * * @param dev A pointer to net_device structure * @return 0 * * For USB adapter, on some systems the device open handler will be * called before FW ready. Use the following flag check and wait * function to work around the issue. * */ static int pre_open_check(struct net_device *dev) { wlan_private *priv = (wlan_private *) dev->priv; wlan_adapter *adapter = priv->adapter; int i = 0; while (!adapter->fw_ready && i < 20) { i++; msleep_interruptible(100); } if (!adapter->fw_ready) { lbs_pr_err("firmware not ready\n"); return -1; } return 0; } /** * @brief This function opens the device * * @param dev A pointer to net_device structure * @return 0 */ static int libertas_dev_open(struct net_device *dev) { wlan_private *priv = (wlan_private *) dev->priv; wlan_adapter *adapter = priv->adapter; lbs_deb_enter(LBS_DEB_NET); priv->open = 1; if (adapter->connect_status == LIBERTAS_CONNECTED) { netif_carrier_on(priv->dev); if (priv->mesh_dev) netif_carrier_on(priv->mesh_dev); } else { netif_carrier_off(priv->dev); if (priv->mesh_dev) netif_carrier_off(priv->mesh_dev); } lbs_deb_leave(LBS_DEB_NET); return 0; } /** * @brief This function opens the mshX interface * * @param dev A pointer to net_device structure * @return 0 */ static int libertas_mesh_open(struct net_device *dev) { wlan_private *priv = (wlan_private *) dev->priv ; if (pre_open_check(dev) == -1) return -1; priv->mesh_open = 1 ; netif_wake_queue(priv->mesh_dev); if (priv->infra_open == 0) return libertas_dev_open(priv->dev) ; return 0; } /** * @brief This function opens the ethX interface * * @param dev A pointer to net_device structure * @return 0 */ static int libertas_open(struct net_device *dev) { wlan_private *priv = (wlan_private *) dev->priv ; if(pre_open_check(dev) == -1) return -1; priv->infra_open = 1 ; netif_wake_queue(priv->dev); if (priv->open == 0) return libertas_dev_open(priv->dev) ; return 0; } static int libertas_dev_close(struct net_device *dev) { wlan_private *priv = dev->priv; lbs_deb_enter(LBS_DEB_NET); netif_carrier_off(priv->dev); priv->open = 0; lbs_deb_leave(LBS_DEB_NET); return 0; } /** * @brief This function closes the mshX interface * * @param dev A pointer to net_device structure * @return 0 */ static int libertas_mesh_close(struct net_device *dev) { wlan_private *priv = (wlan_private *) (dev->priv); priv->mesh_open = 0; netif_stop_queue(priv->mesh_dev); if (priv->infra_open == 0) return libertas_dev_close(dev); else return 0; } /** * @brief This function closes the ethX interface * * @param dev A pointer to net_device structure * @return 0 */ static int libertas_close(struct net_device *dev) { wlan_private *priv = (wlan_private *) dev->priv; netif_stop_queue(dev); priv->infra_open = 0; if (priv->mesh_open == 0) return libertas_dev_close(dev); else return 0; } static int libertas_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) { int ret = 0; wlan_private *priv = dev->priv; lbs_deb_enter(LBS_DEB_NET); if (priv->dnld_sent || priv->adapter->TxLockFlag) { priv->stats.tx_dropped++; goto done; } netif_stop_queue(priv->dev); if (priv->mesh_dev) netif_stop_queue(priv->mesh_dev); if (libertas_process_tx(priv, skb) == 0) dev->trans_start = jiffies; done: lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret); return ret; } /** * @brief Mark mesh packets and handover them to libertas_hard_start_xmit * */ static int libertas_mesh_pre_start_xmit(struct sk_buff *skb, struct net_device *dev) { wlan_private *priv = dev->priv; int ret; lbs_deb_enter(LBS_DEB_MESH); if(priv->adapter->monitormode != WLAN_MONITOR_OFF) { netif_stop_queue(dev); return -EOPNOTSUPP; } SET_MESH_FRAME(skb); ret = libertas_hard_start_xmit(skb, priv->dev); lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret); return ret; } /** * @brief Mark non-mesh packets and handover them to libertas_hard_start_xmit * */ static int libertas_pre_start_xmit(struct sk_buff *skb, struct net_device *dev) { wlan_private *priv = dev->priv; int ret; lbs_deb_enter(LBS_DEB_NET); if(priv->adapter->monitormode != WLAN_MONITOR_OFF) { netif_stop_queue(dev); return -EOPNOTSUPP; } UNSET_MESH_FRAME(skb); ret = libertas_hard_start_xmit(skb, dev); lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret); return ret; } static void libertas_tx_timeout(struct net_device *dev) { wlan_private *priv = (wlan_private *) dev->priv; lbs_deb_enter(LBS_DEB_TX); lbs_pr_err("tx watch dog timeout\n"); priv->dnld_sent = DNLD_RES_RECEIVED; dev->trans_start = jiffies; if (priv->adapter->currenttxskb) { if (priv->adapter->monitormode != WLAN_MONITOR_OFF) { /* If we are here, we have not received feedback from the previous packet. Assume TX_FAIL and move on. */ priv->adapter->eventcause = 0x01000000; libertas_send_tx_feedback(priv); } else wake_up_interruptible(&priv->waitq); } else if (priv->adapter->connect_status == LIBERTAS_CONNECTED) { netif_wake_queue(priv->dev); if (priv->mesh_dev) netif_wake_queue(priv->mesh_dev); } lbs_deb_leave(LBS_DEB_TX); } /** * @brief This function returns the network statistics * * @param dev A pointer to wlan_private structure * @return A pointer to net_device_stats structure */ static struct net_device_stats *libertas_get_stats(struct net_device *dev) { wlan_private *priv = (wlan_private *) dev->priv; return &priv->stats; } static int libertas_set_mac_address(struct net_device *dev, void *addr) { int ret = 0; wlan_private *priv = (wlan_private *) dev->priv; wlan_adapter *adapter = priv->adapter; struct sockaddr *phwaddr = addr; lbs_deb_enter(LBS_DEB_NET); /* In case it was called from the mesh device */ dev = priv->dev ; memset(adapter->current_addr, 0, ETH_ALEN); /* dev->dev_addr is 8 bytes */ lbs_deb_hex(LBS_DEB_NET, "dev->dev_addr", dev->dev_addr, ETH_ALEN); lbs_deb_hex(LBS_DEB_NET, "addr", phwaddr->sa_data, ETH_ALEN); memcpy(adapter->current_addr, phwaddr->sa_data, ETH_ALEN); ret = libertas_prepare_and_send_command(priv, CMD_802_11_MAC_ADDRESS, CMD_ACT_SET, CMD_OPTION_WAITFORRSP, 0, NULL); if (ret) { lbs_deb_net("set MAC address failed\n"); ret = -1; goto done; } lbs_deb_hex(LBS_DEB_NET, "adapter->macaddr", adapter->current_addr, ETH_ALEN); memcpy(dev->dev_addr, adapter->current_addr, ETH_ALEN); if (priv->mesh_dev) memcpy(priv->mesh_dev->dev_addr, adapter->current_addr, ETH_ALEN); done: lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret); return ret; } static int libertas_copy_multicast_address(wlan_adapter * adapter, struct net_device *dev) { int i = 0; struct dev_mc_list *mcptr = dev->mc_list; for (i = 0; i < dev->mc_count; i++) { memcpy(&adapter->multicastlist[i], mcptr->dmi_addr, ETH_ALEN); mcptr = mcptr->next; } return i; } static void libertas_set_multicast_list(struct net_device *dev) { wlan_private *priv = dev->priv; wlan_adapter *adapter = priv->adapter; int oldpacketfilter; lbs_deb_enter(LBS_DEB_NET); oldpacketfilter = adapter->currentpacketfilter; if (dev->flags & IFF_PROMISC) { lbs_deb_net("enable promiscuous mode\n"); adapter->currentpacketfilter |= CMD_ACT_MAC_PROMISCUOUS_ENABLE; adapter->currentpacketfilter &= ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE | CMD_ACT_MAC_MULTICAST_ENABLE); } else { /* Multicast */ adapter->currentpacketfilter &= ~CMD_ACT_MAC_PROMISCUOUS_ENABLE; if (dev->flags & IFF_ALLMULTI || dev->mc_count > MRVDRV_MAX_MULTICAST_LIST_SIZE) { lbs_deb_net( "enabling all multicast\n"); adapter->currentpacketfilter |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE; adapter->currentpacketfilter &= ~CMD_ACT_MAC_MULTICAST_ENABLE; } else { adapter->currentpacketfilter &= ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE; if (!dev->mc_count) { lbs_deb_net("no multicast addresses, " "disabling multicast\n"); adapter->currentpacketfilter &= ~CMD_ACT_MAC_MULTICAST_ENABLE; } else { int i; adapter->currentpacketfilter |= CMD_ACT_MAC_MULTICAST_ENABLE; adapter->nr_of_multicastmacaddr = libertas_copy_multicast_address(adapter, dev); lbs_deb_net("multicast addresses: %d\n", dev->mc_count); for (i = 0; i < dev->mc_count; i++) { lbs_deb_net("Multicast address %d:" MAC_FMT "\n", i, adapter->multicastlist[i][0], adapter->multicastlist[i][1], adapter->multicastlist[i][2], adapter->multicastlist[i][3], adapter->multicastlist[i][4], adapter->multicastlist[i][5]); } /* send multicast addresses to firmware */ libertas_prepare_and_send_command(priv, CMD_MAC_MULTICAST_ADR, CMD_ACT_SET, 0, 0, NULL); } } } if (adapter->currentpacketfilter != oldpacketfilter) { libertas_set_mac_packet_filter(priv); } lbs_deb_leave(LBS_DEB_NET); } /** * @brief This function handles the major jobs in the WLAN driver. * It handles all events generated by firmware, RX data received * from firmware and TX data sent from kernel. * * @param data A pointer to wlan_thread structure * @return 0 */ static int libertas_thread(void *data) { struct net_device *dev = data; wlan_private *priv = dev->priv; wlan_adapter *adapter = priv->adapter; wait_queue_t wait; u8 ireg = 0; lbs_deb_enter(LBS_DEB_THREAD); init_waitqueue_entry(&wait, current); for (;;) { lbs_deb_thread( "main-thread 111: intcounter=%d " "currenttxskb=%p dnld_sent=%d\n", adapter->intcounter, adapter->currenttxskb, priv->dnld_sent); add_wait_queue(&priv->waitq, &wait); set_current_state(TASK_INTERRUPTIBLE); spin_lock_irq(&adapter->driver_lock); if ((adapter->psstate == PS_STATE_SLEEP) || (!adapter->intcounter && (priv->dnld_sent || adapter->cur_cmd || list_empty(&adapter->cmdpendingq)))) { lbs_deb_thread( "main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n", adapter->connect_status, adapter->intcounter, adapter->psmode, adapter->psstate); spin_unlock_irq(&adapter->driver_lock); schedule(); } else spin_unlock_irq(&adapter->driver_lock); lbs_deb_thread( "main-thread 222 (waking up): intcounter=%d currenttxskb=%p " "dnld_sent=%d\n", adapter->intcounter, adapter->currenttxskb, priv->dnld_sent); set_current_state(TASK_RUNNING); remove_wait_queue(&priv->waitq, &wait); try_to_freeze(); lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p " "dnld_sent=%d\n", adapter->intcounter, adapter->currenttxskb, priv->dnld_sent); if (kthread_should_stop() || adapter->surpriseremoved) { lbs_deb_thread( "main-thread: break from main thread: surpriseremoved=0x%x\n", adapter->surpriseremoved); break; } spin_lock_irq(&adapter->driver_lock); if (adapter->intcounter) { u8 int_status; adapter->intcounter = 0; int_status = priv->hw_get_int_status(priv, &ireg); if (int_status) { lbs_deb_thread( "main-thread: reading HOST_INT_STATUS_REG failed\n"); spin_unlock_irq(&adapter->driver_lock); continue; } adapter->hisregcpy |= ireg; } lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p " "dnld_sent=%d\n", adapter->intcounter, adapter->currenttxskb, priv->dnld_sent); /* command response? */ if (adapter->hisregcpy & MRVDRV_CMD_UPLD_RDY) { lbs_deb_thread("main-thread: cmd response ready\n"); adapter->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY; spin_unlock_irq(&adapter->driver_lock); libertas_process_rx_command(priv); spin_lock_irq(&adapter->driver_lock); } /* Any Card Event */ if (adapter->hisregcpy & MRVDRV_CARDEVENT) { lbs_deb_thread("main-thread: Card Event Activity\n"); adapter->hisregcpy &= ~MRVDRV_CARDEVENT; if (priv->hw_read_event_cause(priv)) { lbs_pr_alert( "main-thread: hw_read_event_cause failed\n"); spin_unlock_irq(&adapter->driver_lock); continue; } spin_unlock_irq(&adapter->driver_lock); libertas_process_event(priv); } else spin_unlock_irq(&adapter->driver_lock); /* Check if we need to confirm Sleep Request received previously */ if (adapter->psstate == PS_STATE_PRE_SLEEP) { if (!priv->dnld_sent && !adapter->cur_cmd) { if (adapter->connect_status == LIBERTAS_CONNECTED) { lbs_deb_thread( "main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p " "dnld_sent=%d cur_cmd=%p, confirm now\n", adapter->intcounter, adapter->currenttxskb, priv->dnld_sent, adapter->cur_cmd); libertas_ps_confirm_sleep(priv, (u16) adapter->psmode); } else { /* workaround for firmware sending * deauth/linkloss event immediately * after sleep request, remove this * after firmware fixes it */ adapter->psstate = PS_STATE_AWAKE; lbs_pr_alert( "main-thread: ignore PS_SleepConfirm in non-connected state\n"); } } } /* The PS state is changed during processing of Sleep Request * event above */ if ((priv->adapter->psstate == PS_STATE_SLEEP) || (priv->adapter->psstate == PS_STATE_PRE_SLEEP)) continue; /* Execute the next command */ if (!priv->dnld_sent && !priv->adapter->cur_cmd) libertas_execute_next_command(priv); /* Wake-up command waiters which can't sleep in * libertas_prepare_and_send_command */ if (!adapter->nr_cmd_pending) wake_up_all(&adapter->cmd_pending); libertas_tx_runqueue(priv); } del_timer(&adapter->command_timer); adapter->nr_cmd_pending = 0; wake_up_all(&adapter->cmd_pending); lbs_deb_leave(LBS_DEB_THREAD); return 0; } /** * @brief This function downloads firmware image, gets * HW spec from firmware and set basic parameters to * firmware. * * @param priv A pointer to wlan_private structure * @return 0 or -1 */ static int wlan_setup_station_hw(wlan_private * priv) { int ret = -1; wlan_adapter *adapter = priv->adapter; struct cmd_ds_mesh_access mesh_access; lbs_deb_enter(LBS_DEB_FW); ret = priv->hw_prog_firmware(priv); if (ret) { lbs_deb_fw("bootloader in invalid state\n"); ret = -1; goto done; } /* * Read MAC address from HW */ memset(adapter->current_addr, 0xff, ETH_ALEN); ret = libertas_prepare_and_send_command(priv, CMD_GET_HW_SPEC, 0, CMD_OPTION_WAITFORRSP, 0, NULL); if (ret) { ret = -1; goto done; } libertas_set_mac_packet_filter(priv); /* Get the supported Data rates */ ret = libertas_prepare_and_send_command(priv, CMD_802_11_DATA_RATE, CMD_ACT_GET_TX_RATE, CMD_OPTION_WAITFORRSP, 0, NULL); if (ret) { ret = -1; goto done; } /* Disable mesh autostart */ if (priv->mesh_dev) { memset(&mesh_access, 0, sizeof(mesh_access)); mesh_access.data[0] = cpu_to_le32(0); ret = libertas_prepare_and_send_command(priv, CMD_MESH_ACCESS, CMD_ACT_MESH_SET_AUTOSTART_ENABLED, CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access); if (ret) { ret = -1; goto done; } priv->mesh_autostart_enabled = 0; } /* Set the boot2 version in firmware */ ret = libertas_prepare_and_send_command(priv, CMD_SET_BOOT2_VER, 0, CMD_OPTION_WAITFORRSP, 0, NULL); ret = 0; done: lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret); return ret; } static void command_timer_fn(unsigned long data); /** * This function handles the timeout of command sending. * It will re-send the same command again. */ static void command_timer_fn(unsigned long data) { wlan_private *priv = (wlan_private *)data; wlan_adapter *adapter = priv->adapter; struct cmd_ctrl_node *ptempnode; struct cmd_ds_command *cmd; unsigned long flags; ptempnode = adapter->cur_cmd; if (ptempnode == NULL) { lbs_deb_fw("ptempnode empty\n"); return; } cmd = (struct cmd_ds_command *)ptempnode->bufvirtualaddr; if (!cmd) { lbs_deb_fw("cmd is NULL\n"); return; } lbs_deb_fw("command_timer_fn fired, cmd %x\n", cmd->command); if (!adapter->fw_ready) return; spin_lock_irqsave(&adapter->driver_lock, flags); adapter->cur_cmd = NULL; spin_unlock_irqrestore(&adapter->driver_lock, flags); lbs_deb_fw("re-sending same command because of timeout\n"); libertas_queue_cmd(adapter, ptempnode, 0); wake_up_interruptible(&priv->waitq); return; } static void libertas_free_adapter(wlan_private * priv) { wlan_adapter *adapter = priv->adapter; if (!adapter) { lbs_deb_fw("why double free adapter?\n"); return; } lbs_deb_fw("free command buffer\n"); libertas_free_cmd_buffer(priv); lbs_deb_fw("free command_timer\n"); del_timer(&adapter->command_timer); lbs_deb_fw("free scan results table\n"); kfree(adapter->networks); adapter->networks = NULL; /* Free the adapter object itself */ lbs_deb_fw("free adapter\n"); kfree(adapter); priv->adapter = NULL; } static int wlan_allocate_adapter(wlan_private * priv) { size_t bufsize; wlan_adapter *adapter = priv->adapter; /* Allocate buffer to store the BSSID list */ bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor); adapter->networks = kzalloc(bufsize, GFP_KERNEL); if (!adapter->networks) { lbs_pr_err("Out of memory allocating beacons\n"); libertas_free_adapter(priv); return -ENOMEM; } /* Allocate the command buffers */ libertas_allocate_cmd_buffer(priv); memset(&adapter->libertas_ps_confirm_sleep, 0, sizeof(struct PS_CMD_ConfirmSleep)); adapter->libertas_ps_confirm_sleep.seqnum = cpu_to_le16(++adapter->seqnum); adapter->libertas_ps_confirm_sleep.command = cpu_to_le16(CMD_802_11_PS_MODE); adapter->libertas_ps_confirm_sleep.size = cpu_to_le16(sizeof(struct PS_CMD_ConfirmSleep)); adapter->libertas_ps_confirm_sleep.result = 0; adapter->libertas_ps_confirm_sleep.action = cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED); return 0; } static void wlan_init_adapter(wlan_private * priv) { wlan_adapter *adapter = priv->adapter; int i; adapter->connect_status = LIBERTAS_DISCONNECTED; memset(adapter->current_addr, 0xff, ETH_ALEN); /* 802.11 specific */ adapter->secinfo.wep_enabled = 0; for (i = 0; i < sizeof(adapter->wep_keys) / sizeof(adapter->wep_keys[0]); i++) memset(&adapter->wep_keys[i], 0, sizeof(struct enc_key)); adapter->wep_tx_keyidx = 0; adapter->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM; adapter->mode = IW_MODE_INFRA; adapter->pending_assoc_req = NULL; adapter->in_progress_assoc_req = NULL; /* Initialize scan result lists */ INIT_LIST_HEAD(&adapter->network_free_list); INIT_LIST_HEAD(&adapter->network_list); for (i = 0; i < MAX_NETWORK_COUNT; i++) { list_add_tail(&adapter->networks[i].list, &adapter->network_free_list); } mutex_init(&adapter->lock); memset(&adapter->curbssparams, 0, sizeof(adapter->curbssparams)); adapter->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL; /* PnP and power profile */ adapter->surpriseremoved = 0; adapter->currentpacketfilter = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON; adapter->radioon = RADIO_ON; adapter->auto_rate = 1; adapter->cur_rate = 0; // set default capabilities adapter->capability = WLAN_CAPABILITY_SHORT_PREAMBLE; adapter->psmode = WLAN802_11POWERMODECAM; adapter->psstate = PS_STATE_FULL_POWER; adapter->needtowakeup = 0; adapter->intcounter = 0; adapter->currenttxskb = NULL; memset(&adapter->tx_queue_ps, 0, NR_TX_QUEUE*sizeof(struct sk_buff*)); adapter->tx_queue_idx = 0; spin_lock_init(&adapter->txqueue_lock); return; } static int libertas_init_fw(wlan_private * priv) { int ret = -1; wlan_adapter *adapter = priv->adapter; lbs_deb_enter(LBS_DEB_FW); /* Allocate adapter structure */ if ((ret = wlan_allocate_adapter(priv)) != 0) goto done; /* init adapter structure */ wlan_init_adapter(priv); /* init timer etc. */ setup_timer(&adapter->command_timer, command_timer_fn, (unsigned long)priv); /* download fimrware etc. */ if ((ret = wlan_setup_station_hw(priv)) != 0) { del_timer_sync(&adapter->command_timer); goto done; } /* init 802.11d */ libertas_init_11d(priv); ret = 0; done: lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret); return ret; } /** * @brief This function adds the card. it will probe the * card, allocate the wlan_priv and initialize the device. * * @param card A pointer to card * @return A pointer to wlan_private structure */ wlan_private *libertas_add_card(void *card, struct device *dmdev) { struct net_device *dev = NULL; wlan_private *priv = NULL; lbs_deb_enter(LBS_DEB_NET); /* Allocate an Ethernet device and register it */ if (!(dev = alloc_etherdev(sizeof(wlan_private)))) { lbs_pr_err("init ethX device failed\n"); return NULL; } priv = dev->priv; /* allocate buffer for wlan_adapter */ if (!(priv->adapter = kzalloc(sizeof(wlan_adapter), GFP_KERNEL))) { lbs_pr_err("allocate buffer for wlan_adapter failed\n"); goto err_kzalloc; } priv->dev = dev; priv->card = card; priv->mesh_open = 0; priv->infra_open = 0; SET_MODULE_OWNER(dev); /* Setup the OS Interface to our functions */ dev->open = libertas_open; dev->hard_start_xmit = libertas_pre_start_xmit; dev->stop = libertas_close; dev->set_mac_address = libertas_set_mac_address; dev->tx_timeout = libertas_tx_timeout; dev->get_stats = libertas_get_stats; dev->watchdog_timeo = 5 * HZ; dev->ethtool_ops = &libertas_ethtool_ops; #ifdef WIRELESS_EXT dev->wireless_handlers = (struct iw_handler_def *)&libertas_handler_def; #endif #define NETIF_F_DYNALLOC 16 dev->features |= NETIF_F_DYNALLOC; dev->flags |= IFF_BROADCAST | IFF_MULTICAST; dev->set_multicast_list = libertas_set_multicast_list; SET_NETDEV_DEV(dev, dmdev); INIT_LIST_HEAD(&priv->adapter->cmdfreeq); INIT_LIST_HEAD(&priv->adapter->cmdpendingq); spin_lock_init(&priv->adapter->driver_lock); init_waitqueue_head(&priv->adapter->cmd_pending); priv->adapter->nr_cmd_pending = 0; priv->rtap_net_dev = NULL; if (device_create_file(dmdev, &dev_attr_libertas_rtap)) goto err_kzalloc; goto done; err_kzalloc: free_netdev(dev); priv = NULL; done: lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv); return priv; } EXPORT_SYMBOL_GPL(libertas_add_card); int libertas_activate_card(wlan_private *priv) { struct net_device *dev = priv->dev; int ret = -1; lbs_deb_enter(LBS_DEB_MAIN); lbs_deb_thread("Starting main thread...\n"); init_waitqueue_head(&priv->waitq); priv->main_thread = kthread_run(libertas_thread, dev, "libertas_main"); if (IS_ERR(priv->main_thread)) { lbs_deb_thread("Error creating main thread.\n"); goto done; } priv->work_thread = create_singlethread_workqueue("libertas_worker"); INIT_DELAYED_WORK(&priv->assoc_work, libertas_association_worker); INIT_DELAYED_WORK(&priv->scan_work, libertas_scan_worker); INIT_WORK(&priv->sync_channel, libertas_sync_channel); /* * Register the device. Fillup the private data structure with * relevant information from the card and request for the required * IRQ. */ if (priv->hw_register_dev(priv) < 0) { lbs_pr_err("failed to register WLAN device\n"); goto err_registerdev; } /* init FW and HW */ if (libertas_init_fw(priv)) { lbs_pr_err("firmware init failed\n"); goto err_registerdev; } if (register_netdev(dev)) { lbs_pr_err("cannot register ethX device\n"); goto err_init_fw; } lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name); libertas_debugfs_init_one(priv, dev); ret = 0; goto done; err_init_fw: priv->hw_unregister_dev(priv); err_registerdev: destroy_workqueue(priv->work_thread); /* Stop the thread servicing the interrupts */ wake_up_interruptible(&priv->waitq); kthread_stop(priv->main_thread); done: lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret); return ret; } EXPORT_SYMBOL_GPL(libertas_activate_card); /** * @brief This function adds mshX interface * * @param priv A pointer to the wlan_private structure * @return 0 if successful, -X otherwise */ int libertas_add_mesh(wlan_private *priv, struct device *dev) { struct net_device *mesh_dev = NULL; int ret = 0; lbs_deb_enter(LBS_DEB_MESH); /* Allocate a virtual mesh device */ if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) { lbs_deb_mesh("init mshX device failed\n"); ret = -ENOMEM; goto done; } mesh_dev->priv = priv; priv->mesh_dev = mesh_dev; SET_MODULE_OWNER(mesh_dev); mesh_dev->open = libertas_mesh_open; mesh_dev->hard_start_xmit = libertas_mesh_pre_start_xmit; mesh_dev->stop = libertas_mesh_close; mesh_dev->get_stats = libertas_get_stats; mesh_dev->set_mac_address = libertas_set_mac_address; mesh_dev->ethtool_ops = &libertas_ethtool_ops; memcpy(mesh_dev->dev_addr, priv->dev->dev_addr, sizeof(priv->dev->dev_addr)); SET_NETDEV_DEV(priv->mesh_dev, dev); #ifdef WIRELESS_EXT mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def; #endif #define NETIF_F_DYNALLOC 16 /* Register virtual mesh interface */ ret = register_netdev(mesh_dev); if (ret) { lbs_pr_err("cannot register mshX virtual interface\n"); goto err_free; } ret = sysfs_create_group(&(mesh_dev->dev.kobj), &libertas_mesh_attr_group); if (ret) goto err_unregister; /* Everything successful */ ret = 0; goto done; err_unregister: unregister_netdev(mesh_dev); err_free: free_netdev(mesh_dev); done: lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret); return ret; } EXPORT_SYMBOL_GPL(libertas_add_mesh); static void wake_pending_cmdnodes(wlan_private *priv) { struct cmd_ctrl_node *cmdnode; unsigned long flags; lbs_deb_enter(LBS_DEB_HOST); spin_lock_irqsave(&priv->adapter->driver_lock, flags); list_for_each_entry(cmdnode, &priv->adapter->cmdpendingq, list) { cmdnode->cmdwaitqwoken = 1; wake_up_interruptible(&cmdnode->cmdwait_q); } spin_unlock_irqrestore(&priv->adapter->driver_lock, flags); } int libertas_remove_card(wlan_private *priv) { wlan_adapter *adapter; struct net_device *dev; union iwreq_data wrqu; lbs_deb_enter(LBS_DEB_NET); libertas_remove_rtap(priv); if (!priv) goto out; adapter = priv->adapter; if (!adapter) goto out; dev = priv->dev; device_remove_file(priv->hotplug_device, &dev_attr_libertas_rtap); netif_stop_queue(priv->dev); netif_carrier_off(priv->dev); wake_pending_cmdnodes(priv); unregister_netdev(dev); cancel_delayed_work(&priv->scan_work); cancel_delayed_work(&priv->assoc_work); destroy_workqueue(priv->work_thread); if (adapter->psmode == WLAN802_11POWERMODEMAX_PSP) { adapter->psmode = WLAN802_11POWERMODECAM; libertas_ps_wakeup(priv, CMD_OPTION_WAITFORRSP); } memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN); wrqu.ap_addr.sa_family = ARPHRD_ETHER; wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL); adapter->surpriseremoved = 1; /* Stop the thread servicing the interrupts */ kthread_stop(priv->main_thread); libertas_debugfs_remove_one(priv); lbs_deb_net("free adapter\n"); libertas_free_adapter(priv); lbs_deb_net("unregister finish\n"); priv->dev = NULL; free_netdev(dev); out: lbs_deb_leave(LBS_DEB_NET); return 0; } EXPORT_SYMBOL_GPL(libertas_remove_card); void libertas_remove_mesh(wlan_private *priv) { struct net_device *mesh_dev; lbs_deb_enter(LBS_DEB_NET); if (!priv) goto out; mesh_dev = priv->mesh_dev; netif_stop_queue(mesh_dev); netif_carrier_off(priv->mesh_dev); sysfs_remove_group(&(mesh_dev->dev.kobj), &libertas_mesh_attr_group); unregister_netdev(mesh_dev); priv->mesh_dev = NULL ; free_netdev(mesh_dev); out: lbs_deb_leave(LBS_DEB_NET); } EXPORT_SYMBOL_GPL(libertas_remove_mesh); /** * @brief This function finds the CFP in * region_cfp_table based on region and band parameter. * * @param region The region code * @param band The band * @param cfp_no A pointer to CFP number * @return A pointer to CFP */ struct chan_freq_power *libertas_get_region_cfp_table(u8 region, u8 band, int *cfp_no) { int i, end; lbs_deb_enter(LBS_DEB_MAIN); end = sizeof(region_cfp_table)/sizeof(struct region_cfp_table); for (i = 0; i < end ; i++) { lbs_deb_main("region_cfp_table[i].region=%d\n", region_cfp_table[i].region); if (region_cfp_table[i].region == region) { *cfp_no = region_cfp_table[i].cfp_no_BG; lbs_deb_leave(LBS_DEB_MAIN); return region_cfp_table[i].cfp_BG; } } lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL"); return NULL; } int libertas_set_regiontable(wlan_private * priv, u8 region, u8 band) { wlan_adapter *adapter = priv->adapter; int ret = 0; int i = 0; struct chan_freq_power *cfp; int cfp_no; lbs_deb_enter(LBS_DEB_MAIN); memset(adapter->region_channel, 0, sizeof(adapter->region_channel)); { cfp = libertas_get_region_cfp_table(region, band, &cfp_no); if (cfp != NULL) { adapter->region_channel[i].nrcfp = cfp_no; adapter->region_channel[i].CFP = cfp; } else { lbs_deb_main("wrong region code %#x in band B/G\n", region); ret = -1; goto out; } adapter->region_channel[i].valid = 1; adapter->region_channel[i].region = region; adapter->region_channel[i].band = band; i++; } out: lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret); return ret; } /** * @brief This function handles the interrupt. it will change PS * state if applicable. it will wake up main_thread to handle * the interrupt event as well. * * @param dev A pointer to net_device structure * @return n/a */ void libertas_interrupt(struct net_device *dev) { wlan_private *priv = dev->priv; lbs_deb_enter(LBS_DEB_THREAD); lbs_deb_thread("libertas_interrupt: intcounter=%d\n", priv->adapter->intcounter); priv->adapter->intcounter++; if (priv->adapter->psstate == PS_STATE_SLEEP) { priv->adapter->psstate = PS_STATE_AWAKE; netif_wake_queue(dev); if (priv->mesh_dev) netif_wake_queue(priv->mesh_dev); } wake_up_interruptible(&priv->waitq); lbs_deb_leave(LBS_DEB_THREAD); } EXPORT_SYMBOL_GPL(libertas_interrupt); int libertas_reset_device(wlan_private *priv) { int ret; lbs_deb_enter(LBS_DEB_MAIN); ret = libertas_prepare_and_send_command(priv, CMD_802_11_RESET, CMD_ACT_HALT, 0, 0, NULL); msleep_interruptible(10); lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret); return ret; } EXPORT_SYMBOL_GPL(libertas_reset_device); static int libertas_init_module(void) { lbs_deb_enter(LBS_DEB_MAIN); libertas_debugfs_init(); lbs_deb_leave(LBS_DEB_MAIN); return 0; } static void libertas_exit_module(void) { lbs_deb_enter(LBS_DEB_MAIN); libertas_debugfs_remove(); lbs_deb_leave(LBS_DEB_MAIN); } /* * rtap interface support fuctions */ static int libertas_rtap_open(struct net_device *dev) { netif_carrier_off(dev); netif_stop_queue(dev); return 0; } static int libertas_rtap_stop(struct net_device *dev) { return 0; } static int libertas_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) { netif_stop_queue(dev); return -EOPNOTSUPP; } static struct net_device_stats *libertas_rtap_get_stats(struct net_device *dev) { wlan_private *priv = dev->priv; return &priv->ieee->stats; } void libertas_remove_rtap(wlan_private *priv) { if (priv->rtap_net_dev == NULL) return; unregister_netdev(priv->rtap_net_dev); free_ieee80211(priv->rtap_net_dev); priv->rtap_net_dev = NULL; } int libertas_add_rtap(wlan_private *priv) { int rc = 0; if (priv->rtap_net_dev) return -EPERM; priv->rtap_net_dev = alloc_ieee80211(0); if (priv->rtap_net_dev == NULL) return -ENOMEM; priv->ieee = netdev_priv(priv->rtap_net_dev); strcpy(priv->rtap_net_dev->name, "rtap%d"); priv->rtap_net_dev->type = ARPHRD_IEEE80211_RADIOTAP; priv->rtap_net_dev->open = libertas_rtap_open; priv->rtap_net_dev->stop = libertas_rtap_stop; priv->rtap_net_dev->get_stats = libertas_rtap_get_stats; priv->rtap_net_dev->hard_start_xmit = libertas_rtap_hard_start_xmit; priv->rtap_net_dev->set_multicast_list = libertas_set_multicast_list; priv->rtap_net_dev->priv = priv; priv->ieee->iw_mode = IW_MODE_MONITOR; rc = register_netdev(priv->rtap_net_dev); if (rc) { free_ieee80211(priv->rtap_net_dev); priv->rtap_net_dev = NULL; return rc; } return 0; } module_init(libertas_init_module); module_exit(libertas_exit_module); MODULE_DESCRIPTION("Libertas WLAN Driver Library"); MODULE_AUTHOR("Marvell International Ltd."); MODULE_LICENSE("GPL");