diff options
Diffstat (limited to 'drivers/net/wireless/mwifiex/main.c')
| -rw-r--r-- | drivers/net/wireless/mwifiex/main.c | 1552 |
1 files changed, 0 insertions, 1552 deletions
diff --git a/drivers/net/wireless/mwifiex/main.c b/drivers/net/wireless/mwifiex/main.c deleted file mode 100644 index 276e147a2..000000000 --- a/drivers/net/wireless/mwifiex/main.c +++ /dev/null @@ -1,1552 +0,0 @@ -/* - * Marvell Wireless LAN device driver: major functions - * - * Copyright (C) 2011-2014, Marvell International Ltd. - * - * This software file (the "File") is distributed by Marvell International - * Ltd. under the terms of the GNU General Public License Version 2, June 1991 - * (the "License"). You may use, redistribute and/or modify this File in - * accordance with the terms and conditions of the License, a copy of which - * is available by writing to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the - * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. - * - * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE - * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE - * ARE EXPRESSLY DISCLAIMED. The License provides additional details about - * this warranty disclaimer. - */ - -#include "main.h" -#include "wmm.h" -#include "cfg80211.h" -#include "11n.h" - -#define VERSION "1.0" - -static unsigned int debug_mask = MWIFIEX_DEFAULT_DEBUG_MASK; -module_param(debug_mask, uint, 0); -MODULE_PARM_DESC(debug_mask, "bitmap for debug flags"); - -const char driver_version[] = "mwifiex " VERSION " (%s) "; -static char *cal_data_cfg; -module_param(cal_data_cfg, charp, 0); - -static unsigned short driver_mode; -module_param(driver_mode, ushort, 0); -MODULE_PARM_DESC(driver_mode, - "station=0x1(default), ap-sta=0x3, station-p2p=0x5, ap-sta-p2p=0x7"); - -/* - * This function registers the device and performs all the necessary - * initializations. - * - * The following initialization operations are performed - - * - Allocate adapter structure - * - Save interface specific operations table in adapter - * - Call interface specific initialization routine - * - Allocate private structures - * - Set default adapter structure parameters - * - Initialize locks - * - * In case of any errors during inittialization, this function also ensures - * proper cleanup before exiting. - */ -static int mwifiex_register(void *card, struct mwifiex_if_ops *if_ops, - void **padapter) -{ - struct mwifiex_adapter *adapter; - int i; - - adapter = kzalloc(sizeof(struct mwifiex_adapter), GFP_KERNEL); - if (!adapter) - return -ENOMEM; - - *padapter = adapter; - adapter->card = card; - - /* Save interface specific operations in adapter */ - memmove(&adapter->if_ops, if_ops, sizeof(struct mwifiex_if_ops)); - adapter->debug_mask = debug_mask; - - /* card specific initialization has been deferred until now .. */ - if (adapter->if_ops.init_if) - if (adapter->if_ops.init_if(adapter)) - goto error; - - adapter->priv_num = 0; - - for (i = 0; i < MWIFIEX_MAX_BSS_NUM; i++) { - /* Allocate memory for private structure */ - adapter->priv[i] = - kzalloc(sizeof(struct mwifiex_private), GFP_KERNEL); - if (!adapter->priv[i]) - goto error; - - adapter->priv[i]->adapter = adapter; - adapter->priv_num++; - } - mwifiex_init_lock_list(adapter); - - setup_timer(&adapter->cmd_timer, mwifiex_cmd_timeout_func, - (unsigned long)adapter); - - return 0; - -error: - mwifiex_dbg(adapter, ERROR, - "info: leave mwifiex_register with error\n"); - - for (i = 0; i < adapter->priv_num; i++) - kfree(adapter->priv[i]); - - kfree(adapter); - - return -1; -} - -/* - * This function unregisters the device and performs all the necessary - * cleanups. - * - * The following cleanup operations are performed - - * - Free the timers - * - Free beacon buffers - * - Free private structures - * - Free adapter structure - */ -static int mwifiex_unregister(struct mwifiex_adapter *adapter) -{ - s32 i; - - if (adapter->if_ops.cleanup_if) - adapter->if_ops.cleanup_if(adapter); - - del_timer_sync(&adapter->cmd_timer); - - /* Free private structures */ - for (i = 0; i < adapter->priv_num; i++) { - if (adapter->priv[i]) { - mwifiex_free_curr_bcn(adapter->priv[i]); - kfree(adapter->priv[i]); - } - } - - vfree(adapter->chan_stats); - kfree(adapter); - return 0; -} - -void mwifiex_queue_main_work(struct mwifiex_adapter *adapter) -{ - unsigned long flags; - - spin_lock_irqsave(&adapter->main_proc_lock, flags); - if (adapter->mwifiex_processing) { - adapter->more_task_flag = true; - spin_unlock_irqrestore(&adapter->main_proc_lock, flags); - } else { - spin_unlock_irqrestore(&adapter->main_proc_lock, flags); - queue_work(adapter->workqueue, &adapter->main_work); - } -} -EXPORT_SYMBOL_GPL(mwifiex_queue_main_work); - -static void mwifiex_queue_rx_work(struct mwifiex_adapter *adapter) -{ - unsigned long flags; - - spin_lock_irqsave(&adapter->rx_proc_lock, flags); - if (adapter->rx_processing) { - spin_unlock_irqrestore(&adapter->rx_proc_lock, flags); - } else { - spin_unlock_irqrestore(&adapter->rx_proc_lock, flags); - queue_work(adapter->rx_workqueue, &adapter->rx_work); - } -} - -static int mwifiex_process_rx(struct mwifiex_adapter *adapter) -{ - unsigned long flags; - struct sk_buff *skb; - struct mwifiex_rxinfo *rx_info; - - spin_lock_irqsave(&adapter->rx_proc_lock, flags); - if (adapter->rx_processing || adapter->rx_locked) { - spin_unlock_irqrestore(&adapter->rx_proc_lock, flags); - goto exit_rx_proc; - } else { - adapter->rx_processing = true; - spin_unlock_irqrestore(&adapter->rx_proc_lock, flags); - } - - /* Check for Rx data */ - while ((skb = skb_dequeue(&adapter->rx_data_q))) { - atomic_dec(&adapter->rx_pending); - if ((adapter->delay_main_work || - adapter->iface_type == MWIFIEX_USB) && - (atomic_read(&adapter->rx_pending) < LOW_RX_PENDING)) { - if (adapter->if_ops.submit_rem_rx_urbs) - adapter->if_ops.submit_rem_rx_urbs(adapter); - adapter->delay_main_work = false; - mwifiex_queue_main_work(adapter); - } - rx_info = MWIFIEX_SKB_RXCB(skb); - if (rx_info->buf_type == MWIFIEX_TYPE_AGGR_DATA) { - if (adapter->if_ops.deaggr_pkt) - adapter->if_ops.deaggr_pkt(adapter, skb); - dev_kfree_skb_any(skb); - } else { - mwifiex_handle_rx_packet(adapter, skb); - } - } - spin_lock_irqsave(&adapter->rx_proc_lock, flags); - adapter->rx_processing = false; - spin_unlock_irqrestore(&adapter->rx_proc_lock, flags); - -exit_rx_proc: - return 0; -} - -/* - * The main process. - * - * This function is the main procedure of the driver and handles various driver - * operations. It runs in a loop and provides the core functionalities. - * - * The main responsibilities of this function are - - * - Ensure concurrency control - * - Handle pending interrupts and call interrupt handlers - * - Wake up the card if required - * - Handle command responses and call response handlers - * - Handle events and call event handlers - * - Execute pending commands - * - Transmit pending data packets - */ -int mwifiex_main_process(struct mwifiex_adapter *adapter) -{ - int ret = 0; - unsigned long flags; - - spin_lock_irqsave(&adapter->main_proc_lock, flags); - - /* Check if already processing */ - if (adapter->mwifiex_processing || adapter->main_locked) { - adapter->more_task_flag = true; - spin_unlock_irqrestore(&adapter->main_proc_lock, flags); - goto exit_main_proc; - } else { - adapter->mwifiex_processing = true; - spin_unlock_irqrestore(&adapter->main_proc_lock, flags); - } -process_start: - do { - if ((adapter->hw_status == MWIFIEX_HW_STATUS_CLOSING) || - (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)) - break; - - /* For non-USB interfaces, If we process interrupts first, it - * would increase RX pending even further. Avoid this by - * checking if rx_pending has crossed high threshold and - * schedule rx work queue and then process interrupts. - * For USB interface, there are no interrupts. We already have - * HIGH_RX_PENDING check in usb.c - */ - if (atomic_read(&adapter->rx_pending) >= HIGH_RX_PENDING && - adapter->iface_type != MWIFIEX_USB) { - adapter->delay_main_work = true; - mwifiex_queue_rx_work(adapter); - break; - } - - /* Handle pending interrupt if any */ - if (adapter->int_status) { - if (adapter->hs_activated) - mwifiex_process_hs_config(adapter); - if (adapter->if_ops.process_int_status) - adapter->if_ops.process_int_status(adapter); - } - - if (adapter->rx_work_enabled && adapter->data_received) - mwifiex_queue_rx_work(adapter); - - /* Need to wake up the card ? */ - if ((adapter->ps_state == PS_STATE_SLEEP) && - (adapter->pm_wakeup_card_req && - !adapter->pm_wakeup_fw_try) && - (is_command_pending(adapter) || - !skb_queue_empty(&adapter->tx_data_q) || - !mwifiex_bypass_txlist_empty(adapter) || - !mwifiex_wmm_lists_empty(adapter))) { - adapter->pm_wakeup_fw_try = true; - mod_timer(&adapter->wakeup_timer, jiffies + (HZ*3)); - adapter->if_ops.wakeup(adapter); - continue; - } - - if (IS_CARD_RX_RCVD(adapter)) { - adapter->data_received = false; - adapter->pm_wakeup_fw_try = false; - del_timer(&adapter->wakeup_timer); - if (adapter->ps_state == PS_STATE_SLEEP) - adapter->ps_state = PS_STATE_AWAKE; - } else { - /* We have tried to wakeup the card already */ - if (adapter->pm_wakeup_fw_try) - break; - if (adapter->ps_state != PS_STATE_AWAKE) - break; - if (adapter->tx_lock_flag) { - if (adapter->iface_type == MWIFIEX_USB) { - if (!adapter->usb_mc_setup) - break; - } else - break; - } - - if ((!adapter->scan_chan_gap_enabled && - adapter->scan_processing) || adapter->data_sent || - mwifiex_is_tdls_chan_switching - (mwifiex_get_priv(adapter, - MWIFIEX_BSS_ROLE_STA)) || - (mwifiex_wmm_lists_empty(adapter) && - mwifiex_bypass_txlist_empty(adapter) && - skb_queue_empty(&adapter->tx_data_q))) { - if (adapter->cmd_sent || adapter->curr_cmd || - !mwifiex_is_send_cmd_allowed - (mwifiex_get_priv(adapter, - MWIFIEX_BSS_ROLE_STA)) || - (!is_command_pending(adapter))) - break; - } - } - - /* Check for event */ - if (adapter->event_received) { - adapter->event_received = false; - mwifiex_process_event(adapter); - } - - /* Check for Cmd Resp */ - if (adapter->cmd_resp_received) { - adapter->cmd_resp_received = false; - mwifiex_process_cmdresp(adapter); - - /* call mwifiex back when init_fw is done */ - if (adapter->hw_status == MWIFIEX_HW_STATUS_INIT_DONE) { - adapter->hw_status = MWIFIEX_HW_STATUS_READY; - mwifiex_init_fw_complete(adapter); - } - } - - /* Check if we need to confirm Sleep Request - received previously */ - if (adapter->ps_state == PS_STATE_PRE_SLEEP) { - if (!adapter->cmd_sent && !adapter->curr_cmd) - mwifiex_check_ps_cond(adapter); - } - - /* * The ps_state may have been changed during processing of - * Sleep Request event. - */ - if ((adapter->ps_state == PS_STATE_SLEEP) || - (adapter->ps_state == PS_STATE_PRE_SLEEP) || - (adapter->ps_state == PS_STATE_SLEEP_CFM)) { - continue; - } - - if (adapter->tx_lock_flag) { - if (adapter->iface_type == MWIFIEX_USB) { - if (!adapter->usb_mc_setup) - continue; - } else - continue; - } - - if (!adapter->cmd_sent && !adapter->curr_cmd && - mwifiex_is_send_cmd_allowed - (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) { - if (mwifiex_exec_next_cmd(adapter) == -1) { - ret = -1; - break; - } - } - - /** If USB Multi channel setup ongoing, - * wait for ready to tx data. - */ - if (adapter->iface_type == MWIFIEX_USB && - adapter->usb_mc_setup) - continue; - - if ((adapter->scan_chan_gap_enabled || - !adapter->scan_processing) && - !adapter->data_sent && - !skb_queue_empty(&adapter->tx_data_q)) { - mwifiex_process_tx_queue(adapter); - if (adapter->hs_activated) { - adapter->is_hs_configured = false; - mwifiex_hs_activated_event - (mwifiex_get_priv - (adapter, MWIFIEX_BSS_ROLE_ANY), - false); - } - } - - if ((adapter->scan_chan_gap_enabled || - !adapter->scan_processing) && - !adapter->data_sent && - !mwifiex_bypass_txlist_empty(adapter) && - !mwifiex_is_tdls_chan_switching - (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) { - mwifiex_process_bypass_tx(adapter); - if (adapter->hs_activated) { - adapter->is_hs_configured = false; - mwifiex_hs_activated_event - (mwifiex_get_priv - (adapter, MWIFIEX_BSS_ROLE_ANY), - false); - } - } - - if ((adapter->scan_chan_gap_enabled || - !adapter->scan_processing) && - !adapter->data_sent && !mwifiex_wmm_lists_empty(adapter) && - !mwifiex_is_tdls_chan_switching - (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) { - mwifiex_wmm_process_tx(adapter); - if (adapter->hs_activated) { - adapter->is_hs_configured = false; - mwifiex_hs_activated_event - (mwifiex_get_priv - (adapter, MWIFIEX_BSS_ROLE_ANY), - false); - } - } - - if (adapter->delay_null_pkt && !adapter->cmd_sent && - !adapter->curr_cmd && !is_command_pending(adapter) && - (mwifiex_wmm_lists_empty(adapter) && - mwifiex_bypass_txlist_empty(adapter) && - skb_queue_empty(&adapter->tx_data_q))) { - if (!mwifiex_send_null_packet - (mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA), - MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET | - MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET)) { - adapter->delay_null_pkt = false; - adapter->ps_state = PS_STATE_SLEEP; - } - break; - } - } while (true); - - spin_lock_irqsave(&adapter->main_proc_lock, flags); - if (adapter->more_task_flag) { - adapter->more_task_flag = false; - spin_unlock_irqrestore(&adapter->main_proc_lock, flags); - goto process_start; - } - adapter->mwifiex_processing = false; - spin_unlock_irqrestore(&adapter->main_proc_lock, flags); - -exit_main_proc: - if (adapter->hw_status == MWIFIEX_HW_STATUS_CLOSING) - mwifiex_shutdown_drv(adapter); - return ret; -} -EXPORT_SYMBOL_GPL(mwifiex_main_process); - -/* - * This function frees the adapter structure. - * - * Additionally, this closes the netlink socket, frees the timers - * and private structures. - */ -static void mwifiex_free_adapter(struct mwifiex_adapter *adapter) -{ - if (!adapter) { - pr_err("%s: adapter is NULL\n", __func__); - return; - } - - mwifiex_unregister(adapter); - pr_debug("info: %s: free adapter\n", __func__); -} - -/* - * This function cancels all works in the queue and destroys - * the main workqueue. - */ -static void mwifiex_terminate_workqueue(struct mwifiex_adapter *adapter) -{ - flush_workqueue(adapter->workqueue); - destroy_workqueue(adapter->workqueue); - adapter->workqueue = NULL; - - if (adapter->rx_workqueue) { - flush_workqueue(adapter->rx_workqueue); - destroy_workqueue(adapter->rx_workqueue); - adapter->rx_workqueue = NULL; - } -} - -/* - * This function gets firmware and initializes it. - * - * The main initialization steps followed are - - * - Download the correct firmware to card - * - Issue the init commands to firmware - */ -static void mwifiex_fw_dpc(const struct firmware *firmware, void *context) -{ - int ret; - char fmt[64]; - struct mwifiex_private *priv; - struct mwifiex_adapter *adapter = context; - struct mwifiex_fw_image fw; - struct semaphore *sem = adapter->card_sem; - bool init_failed = false; - struct wireless_dev *wdev; - - if (!firmware) { - mwifiex_dbg(adapter, ERROR, - "Failed to get firmware %s\n", adapter->fw_name); - goto err_dnld_fw; - } - - memset(&fw, 0, sizeof(struct mwifiex_fw_image)); - adapter->firmware = firmware; - fw.fw_buf = (u8 *) adapter->firmware->data; - fw.fw_len = adapter->firmware->size; - - if (adapter->if_ops.dnld_fw) - ret = adapter->if_ops.dnld_fw(adapter, &fw); - else - ret = mwifiex_dnld_fw(adapter, &fw); - if (ret == -1) - goto err_dnld_fw; - - mwifiex_dbg(adapter, MSG, "WLAN FW is active\n"); - - if (cal_data_cfg) { - if ((reject_firmware(&adapter->cal_data, cal_data_cfg, - adapter->dev)) < 0) - mwifiex_dbg(adapter, ERROR, - "Cal data reject_firmware() failed\n"); - } - - /* enable host interrupt after fw dnld is successful */ - if (adapter->if_ops.enable_int) { - if (adapter->if_ops.enable_int(adapter)) - goto err_dnld_fw; - } - - adapter->init_wait_q_woken = false; - ret = mwifiex_init_fw(adapter); - if (ret == -1) { - goto err_init_fw; - } else if (!ret) { - adapter->hw_status = MWIFIEX_HW_STATUS_READY; - goto done; - } - /* Wait for mwifiex_init to complete */ - wait_event_interruptible(adapter->init_wait_q, - adapter->init_wait_q_woken); - if (adapter->hw_status != MWIFIEX_HW_STATUS_READY) - goto err_init_fw; - - priv = adapter->priv[MWIFIEX_BSS_ROLE_STA]; - if (mwifiex_register_cfg80211(adapter)) { - mwifiex_dbg(adapter, ERROR, - "cannot register with cfg80211\n"); - goto err_init_fw; - } - - if (mwifiex_init_channel_scan_gap(adapter)) { - mwifiex_dbg(adapter, ERROR, - "could not init channel stats table\n"); - goto err_init_fw; - } - - if (driver_mode) { - driver_mode &= MWIFIEX_DRIVER_MODE_BITMASK; - driver_mode |= MWIFIEX_DRIVER_MODE_STA; - } - - rtnl_lock(); - /* Create station interface by default */ - wdev = mwifiex_add_virtual_intf(adapter->wiphy, "mlan%d", NET_NAME_ENUM, - NL80211_IFTYPE_STATION, NULL, NULL); - if (IS_ERR(wdev)) { - mwifiex_dbg(adapter, ERROR, - "cannot create default STA interface\n"); - rtnl_unlock(); - goto err_add_intf; - } - - if (driver_mode & MWIFIEX_DRIVER_MODE_UAP) { - wdev = mwifiex_add_virtual_intf(adapter->wiphy, "uap%d", NET_NAME_ENUM, - NL80211_IFTYPE_AP, NULL, NULL); - if (IS_ERR(wdev)) { - mwifiex_dbg(adapter, ERROR, - "cannot create AP interface\n"); - rtnl_unlock(); - goto err_add_intf; - } - } - - if (driver_mode & MWIFIEX_DRIVER_MODE_P2P) { - wdev = mwifiex_add_virtual_intf(adapter->wiphy, "p2p%d", NET_NAME_ENUM, - NL80211_IFTYPE_P2P_CLIENT, NULL, - NULL); - if (IS_ERR(wdev)) { - mwifiex_dbg(adapter, ERROR, - "cannot create p2p client interface\n"); - rtnl_unlock(); - goto err_add_intf; - } - } - rtnl_unlock(); - - mwifiex_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1); - mwifiex_dbg(adapter, MSG, "driver_version = %s\n", fmt); - goto done; - -err_add_intf: - wiphy_unregister(adapter->wiphy); - wiphy_free(adapter->wiphy); -err_init_fw: - if (adapter->if_ops.disable_int) - adapter->if_ops.disable_int(adapter); -err_dnld_fw: - mwifiex_dbg(adapter, ERROR, - "info: %s: unregister device\n", __func__); - if (adapter->if_ops.unregister_dev) - adapter->if_ops.unregister_dev(adapter); - - if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) { - pr_debug("info: %s: shutdown mwifiex\n", __func__); - adapter->init_wait_q_woken = false; - - if (mwifiex_shutdown_drv(adapter) == -EINPROGRESS) - wait_event_interruptible(adapter->init_wait_q, - adapter->init_wait_q_woken); - } - adapter->surprise_removed = true; - mwifiex_terminate_workqueue(adapter); - init_failed = true; -done: - if (adapter->cal_data) { - release_firmware(adapter->cal_data); - adapter->cal_data = NULL; - } - if (adapter->firmware) { - release_firmware(adapter->firmware); - adapter->firmware = NULL; - } - if (init_failed) - mwifiex_free_adapter(adapter); - up(sem); - return; -} - -/* - * This function initializes the hardware and gets firmware. - */ -static int mwifiex_init_hw_fw(struct mwifiex_adapter *adapter) -{ - int ret; - - ret = reject_firmware_nowait(THIS_MODULE, 1, adapter->fw_name, - adapter->dev, GFP_KERNEL, adapter, - mwifiex_fw_dpc); - if (ret < 0) - mwifiex_dbg(adapter, ERROR, - "request_firmware_nowait error %d\n", ret); - return ret; -} - -/* - * CFG802.11 network device handler for open. - * - * Starts the data queue. - */ -static int -mwifiex_open(struct net_device *dev) -{ - netif_carrier_off(dev); - - return 0; -} - -/* - * CFG802.11 network device handler for close. - */ -static int -mwifiex_close(struct net_device *dev) -{ - struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); - - if (priv->scan_request) { - mwifiex_dbg(priv->adapter, INFO, - "aborting scan on ndo_stop\n"); - cfg80211_scan_done(priv->scan_request, 1); - priv->scan_request = NULL; - priv->scan_aborting = true; - } - - return 0; -} - -static bool -mwifiex_bypass_tx_queue(struct mwifiex_private *priv, - struct sk_buff *skb) -{ - struct ethhdr *eth_hdr = (struct ethhdr *)skb->data; - - if (ntohs(eth_hdr->h_proto) == ETH_P_PAE || - mwifiex_is_skb_mgmt_frame(skb) || - (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA && - ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) && - (ntohs(eth_hdr->h_proto) == ETH_P_TDLS))) { - mwifiex_dbg(priv->adapter, DATA, - "bypass txqueue; eth type %#x, mgmt %d\n", - ntohs(eth_hdr->h_proto), - mwifiex_is_skb_mgmt_frame(skb)); - return true; - } - - return false; -} -/* - * Add buffer into wmm tx queue and queue work to transmit it. - */ -int mwifiex_queue_tx_pkt(struct mwifiex_private *priv, struct sk_buff *skb) -{ - struct netdev_queue *txq; - int index = mwifiex_1d_to_wmm_queue[skb->priority]; - - if (atomic_inc_return(&priv->wmm_tx_pending[index]) >= MAX_TX_PENDING) { - txq = netdev_get_tx_queue(priv->netdev, index); - if (!netif_tx_queue_stopped(txq)) { - netif_tx_stop_queue(txq); - mwifiex_dbg(priv->adapter, DATA, - "stop queue: %d\n", index); - } - } - - if (mwifiex_bypass_tx_queue(priv, skb)) { - atomic_inc(&priv->adapter->tx_pending); - atomic_inc(&priv->adapter->bypass_tx_pending); - mwifiex_wmm_add_buf_bypass_txqueue(priv, skb); - } else { - atomic_inc(&priv->adapter->tx_pending); - mwifiex_wmm_add_buf_txqueue(priv, skb); - } - - mwifiex_queue_main_work(priv->adapter); - - return 0; -} - -struct sk_buff * -mwifiex_clone_skb_for_tx_status(struct mwifiex_private *priv, - struct sk_buff *skb, u8 flag, u64 *cookie) -{ - struct sk_buff *orig_skb = skb; - struct mwifiex_txinfo *tx_info, *orig_tx_info; - - skb = skb_clone(skb, GFP_ATOMIC); - if (skb) { - unsigned long flags; - int id; - - spin_lock_irqsave(&priv->ack_status_lock, flags); - id = idr_alloc(&priv->ack_status_frames, orig_skb, - 1, 0xff, GFP_ATOMIC); - spin_unlock_irqrestore(&priv->ack_status_lock, flags); - - if (id >= 0) { - tx_info = MWIFIEX_SKB_TXCB(skb); - tx_info->ack_frame_id = id; - tx_info->flags |= flag; - orig_tx_info = MWIFIEX_SKB_TXCB(orig_skb); - orig_tx_info->ack_frame_id = id; - orig_tx_info->flags |= flag; - - if (flag == MWIFIEX_BUF_FLAG_ACTION_TX_STATUS && cookie) - orig_tx_info->cookie = *cookie; - - } else if (skb_shared(skb)) { - kfree_skb(orig_skb); - } else { - kfree_skb(skb); - skb = orig_skb; - } - } else { - /* couldn't clone -- lose tx status ... */ - skb = orig_skb; - } - - return skb; -} - -/* - * CFG802.11 network device handler for data transmission. - */ -static int -mwifiex_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) -{ - struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); - struct sk_buff *new_skb; - struct mwifiex_txinfo *tx_info; - bool multicast; - - mwifiex_dbg(priv->adapter, DATA, - "data: %lu BSS(%d-%d): Data <= kernel\n", - jiffies, priv->bss_type, priv->bss_num); - - if (priv->adapter->surprise_removed) { - kfree_skb(skb); - priv->stats.tx_dropped++; - return 0; - } - if (!skb->len || (skb->len > ETH_FRAME_LEN)) { - mwifiex_dbg(priv->adapter, ERROR, - "Tx: bad skb len %d\n", skb->len); - kfree_skb(skb); - priv->stats.tx_dropped++; - return 0; - } - if (skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN) { - mwifiex_dbg(priv->adapter, DATA, - "data: Tx: insufficient skb headroom %d\n", - skb_headroom(skb)); - /* Insufficient skb headroom - allocate a new skb */ - new_skb = - skb_realloc_headroom(skb, MWIFIEX_MIN_DATA_HEADER_LEN); - if (unlikely(!new_skb)) { - mwifiex_dbg(priv->adapter, ERROR, - "Tx: cannot alloca new_skb\n"); - kfree_skb(skb); - priv->stats.tx_dropped++; - return 0; - } - kfree_skb(skb); - skb = new_skb; - mwifiex_dbg(priv->adapter, INFO, - "info: new skb headroomd %d\n", - skb_headroom(skb)); - } - - tx_info = MWIFIEX_SKB_TXCB(skb); - memset(tx_info, 0, sizeof(*tx_info)); - tx_info->bss_num = priv->bss_num; - tx_info->bss_type = priv->bss_type; - tx_info->pkt_len = skb->len; - - multicast = is_multicast_ether_addr(skb->data); - - if (unlikely(!multicast && skb->sk && - skb_shinfo(skb)->tx_flags & SKBTX_WIFI_STATUS && - priv->adapter->fw_api_ver == MWIFIEX_FW_V15)) - skb = mwifiex_clone_skb_for_tx_status(priv, - skb, - MWIFIEX_BUF_FLAG_EAPOL_TX_STATUS, NULL); - - /* Record the current time the packet was queued; used to - * determine the amount of time the packet was queued in - * the driver before it was sent to the firmware. - * The delay is then sent along with the packet to the - * firmware for aggregate delay calculation for stats and - * MSDU lifetime expiry. - */ - __net_timestamp(skb); - - if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) && - priv->bss_type == MWIFIEX_BSS_TYPE_STA && - !ether_addr_equal_unaligned(priv->cfg_bssid, skb->data)) { - if (priv->adapter->auto_tdls && priv->check_tdls_tx) - mwifiex_tdls_check_tx(priv, skb); - } - - mwifiex_queue_tx_pkt(priv, skb); - - return 0; -} - -/* - * CFG802.11 network device handler for setting MAC address. - */ -static int -mwifiex_set_mac_address(struct net_device *dev, void *addr) -{ - struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); - struct sockaddr *hw_addr = addr; - int ret; - - memcpy(priv->curr_addr, hw_addr->sa_data, ETH_ALEN); - - /* Send request to firmware */ - ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_MAC_ADDRESS, - HostCmd_ACT_GEN_SET, 0, NULL, true); - - if (!ret) - memcpy(priv->netdev->dev_addr, priv->curr_addr, ETH_ALEN); - else - mwifiex_dbg(priv->adapter, ERROR, - "set mac address failed: ret=%d\n", ret); - - memcpy(dev->dev_addr, priv->curr_addr, ETH_ALEN); - - return ret; -} - -/* - * CFG802.11 network device handler for setting multicast list. - */ -static void mwifiex_set_multicast_list(struct net_device *dev) -{ - struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); - struct mwifiex_multicast_list mcast_list; - - if (dev->flags & IFF_PROMISC) { - mcast_list.mode = MWIFIEX_PROMISC_MODE; - } else if (dev->flags & IFF_ALLMULTI || - netdev_mc_count(dev) > MWIFIEX_MAX_MULTICAST_LIST_SIZE) { - mcast_list.mode = MWIFIEX_ALL_MULTI_MODE; - } else { - mcast_list.mode = MWIFIEX_MULTICAST_MODE; - mcast_list.num_multicast_addr = - mwifiex_copy_mcast_addr(&mcast_list, dev); - } - mwifiex_request_set_multicast_list(priv, &mcast_list); -} - -/* - * CFG802.11 network device handler for transmission timeout. - */ -static void -mwifiex_tx_timeout(struct net_device *dev) -{ - struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); - - priv->num_tx_timeout++; - priv->tx_timeout_cnt++; - mwifiex_dbg(priv->adapter, ERROR, - "%lu : Tx timeout(#%d), bss_type-num = %d-%d\n", - jiffies, priv->tx_timeout_cnt, priv->bss_type, - priv->bss_num); - mwifiex_set_trans_start(dev); - - if (priv->tx_timeout_cnt > TX_TIMEOUT_THRESHOLD && - priv->adapter->if_ops.card_reset) { - mwifiex_dbg(priv->adapter, ERROR, - "tx_timeout_cnt exceeds threshold.\t" - "Triggering card reset!\n"); - priv->adapter->if_ops.card_reset(priv->adapter); - } -} - -void mwifiex_multi_chan_resync(struct mwifiex_adapter *adapter) -{ - struct usb_card_rec *card = adapter->card; - struct mwifiex_private *priv; - u16 tx_buf_size; - int i, ret; - - card->mc_resync_flag = true; - for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) { - if (atomic_read(&card->port[i].tx_data_urb_pending)) { - mwifiex_dbg(adapter, WARN, "pending data urb in sys\n"); - return; - } - } - - card->mc_resync_flag = false; - tx_buf_size = 0xffff; - priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY); - ret = mwifiex_send_cmd(priv, HostCmd_CMD_RECONFIGURE_TX_BUFF, - HostCmd_ACT_GEN_SET, 0, &tx_buf_size, false); - if (ret) - mwifiex_dbg(adapter, ERROR, - "send reconfig tx buf size cmd err\n"); -} -EXPORT_SYMBOL_GPL(mwifiex_multi_chan_resync); - -void mwifiex_drv_info_dump(struct mwifiex_adapter *adapter) -{ - void *p; - char drv_version[64]; - struct usb_card_rec *cardp; - struct sdio_mmc_card *sdio_card; - struct mwifiex_private *priv; - int i, idx; - struct netdev_queue *txq; - struct mwifiex_debug_info *debug_info; - - if (adapter->drv_info_dump) { - vfree(adapter->drv_info_dump); - adapter->drv_info_dump = NULL; - adapter->drv_info_size = 0; - } - - mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump start===\n"); - - adapter->drv_info_dump = vzalloc(MWIFIEX_DRV_INFO_SIZE_MAX); - - if (!adapter->drv_info_dump) - return; - - p = (char *)(adapter->drv_info_dump); - p += sprintf(p, "driver_name = " "\"mwifiex\"\n"); - - mwifiex_drv_get_driver_version(adapter, drv_version, - sizeof(drv_version) - 1); - p += sprintf(p, "driver_version = %s\n", drv_version); - - if (adapter->iface_type == MWIFIEX_USB) { - cardp = (struct usb_card_rec *)adapter->card; - p += sprintf(p, "tx_cmd_urb_pending = %d\n", - atomic_read(&cardp->tx_cmd_urb_pending)); - p += sprintf(p, "tx_data_urb_pending_port_0 = %d\n", - atomic_read(&cardp->port[0].tx_data_urb_pending)); - p += sprintf(p, "tx_data_urb_pending_port_1 = %d\n", - atomic_read(&cardp->port[1].tx_data_urb_pending)); - p += sprintf(p, "rx_cmd_urb_pending = %d\n", - atomic_read(&cardp->rx_cmd_urb_pending)); - p += sprintf(p, "rx_data_urb_pending = %d\n", - atomic_read(&cardp->rx_data_urb_pending)); - } - - p += sprintf(p, "tx_pending = %d\n", - atomic_read(&adapter->tx_pending)); - p += sprintf(p, "rx_pending = %d\n", - atomic_read(&adapter->rx_pending)); - - if (adapter->iface_type == MWIFIEX_SDIO) { - sdio_card = (struct sdio_mmc_card *)adapter->card; - p += sprintf(p, "\nmp_rd_bitmap=0x%x curr_rd_port=0x%x\n", - sdio_card->mp_rd_bitmap, sdio_card->curr_rd_port); - p += sprintf(p, "mp_wr_bitmap=0x%x curr_wr_port=0x%x\n", - sdio_card->mp_wr_bitmap, sdio_card->curr_wr_port); - } - - for (i = 0; i < adapter->priv_num; i++) { - if (!adapter->priv[i] || !adapter->priv[i]->netdev) - continue; - priv = adapter->priv[i]; - p += sprintf(p, "\n[interface : \"%s\"]\n", - priv->netdev->name); - p += sprintf(p, "wmm_tx_pending[0] = %d\n", - atomic_read(&priv->wmm_tx_pending[0])); - p += sprintf(p, "wmm_tx_pending[1] = %d\n", - atomic_read(&priv->wmm_tx_pending[1])); - p += sprintf(p, "wmm_tx_pending[2] = %d\n", - atomic_read(&priv->wmm_tx_pending[2])); - p += sprintf(p, "wmm_tx_pending[3] = %d\n", - atomic_read(&priv->wmm_tx_pending[3])); - p += sprintf(p, "media_state=\"%s\"\n", !priv->media_connected ? - "Disconnected" : "Connected"); - p += sprintf(p, "carrier %s\n", (netif_carrier_ok(priv->netdev) - ? "on" : "off")); - for (idx = 0; idx < priv->netdev->num_tx_queues; idx++) { - txq = netdev_get_tx_queue(priv->netdev, idx); - p += sprintf(p, "tx queue %d:%s ", idx, - netif_tx_queue_stopped(txq) ? - "stopped" : "started"); - } - p += sprintf(p, "\n%s: num_tx_timeout = %d\n", - priv->netdev->name, priv->num_tx_timeout); - } - - if (adapter->iface_type == MWIFIEX_SDIO) { - p += sprintf(p, "\n=== SDIO register dump===\n"); - if (adapter->if_ops.reg_dump) - p += adapter->if_ops.reg_dump(adapter, p); - } - - p += sprintf(p, "\n=== more debug information\n"); - debug_info = kzalloc(sizeof(*debug_info), GFP_KERNEL); - if (debug_info) { - for (i = 0; i < adapter->priv_num; i++) { - if (!adapter->priv[i] || !adapter->priv[i]->netdev) - continue; - priv = adapter->priv[i]; - mwifiex_get_debug_info(priv, debug_info); - p += mwifiex_debug_info_to_buffer(priv, p, debug_info); - break; - } - kfree(debug_info); - } - - adapter->drv_info_size = p - adapter->drv_info_dump; - mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump end===\n"); -} -EXPORT_SYMBOL_GPL(mwifiex_drv_info_dump); - -void mwifiex_upload_device_dump(struct mwifiex_adapter *adapter) -{ - u8 idx, *dump_data, *fw_dump_ptr; - u32 dump_len; - - dump_len = (strlen("========Start dump driverinfo========\n") + - adapter->drv_info_size + - strlen("\n========End dump========\n")); - - for (idx = 0; idx < adapter->num_mem_types; idx++) { - struct memory_type_mapping *entry = - &adapter->mem_type_mapping_tbl[idx]; - - if (entry->mem_ptr) { - dump_len += (strlen("========Start dump ") + - strlen(entry->mem_name) + - strlen("========\n") + - (entry->mem_size + 1) + - strlen("\n========End dump========\n")); - } - } - - dump_data = vzalloc(dump_len + 1); - if (!dump_data) - goto done; - - fw_dump_ptr = dump_data; - - /* Dump all the memory data into single file, a userspace script will - * be used to split all the memory data to multiple files - */ - mwifiex_dbg(adapter, MSG, - "== mwifiex dump information to /sys/class/devcoredump start"); - - strcpy(fw_dump_ptr, "========Start dump driverinfo========\n"); - fw_dump_ptr += strlen("========Start dump driverinfo========\n"); - memcpy(fw_dump_ptr, adapter->drv_info_dump, adapter->drv_info_size); - fw_dump_ptr += adapter->drv_info_size; - strcpy(fw_dump_ptr, "\n========End dump========\n"); - fw_dump_ptr += strlen("\n========End dump========\n"); - - for (idx = 0; idx < adapter->num_mem_types; idx++) { - struct memory_type_mapping *entry = - &adapter->mem_type_mapping_tbl[idx]; - - if (entry->mem_ptr) { - strcpy(fw_dump_ptr, "========Start dump "); - fw_dump_ptr += strlen("========Start dump "); - - strcpy(fw_dump_ptr, entry->mem_name); - fw_dump_ptr += strlen(entry->mem_name); - - strcpy(fw_dump_ptr, "========\n"); - fw_dump_ptr += strlen("========\n"); - - memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size); - fw_dump_ptr += entry->mem_size; - - strcpy(fw_dump_ptr, "\n========End dump========\n"); - fw_dump_ptr += strlen("\n========End dump========\n"); - } - } - - /* device dump data will be free in device coredump release function - * after 5 min - */ - dev_coredumpv(adapter->dev, dump_data, dump_len, GFP_KERNEL); - mwifiex_dbg(adapter, MSG, - "== mwifiex dump information to /sys/class/devcoredump end"); - -done: - for (idx = 0; idx < adapter->num_mem_types; idx++) { - struct memory_type_mapping *entry = - &adapter->mem_type_mapping_tbl[idx]; - - if (entry->mem_ptr) { - vfree(entry->mem_ptr); - entry->mem_ptr = NULL; - } - entry->mem_size = 0; - } - - if (adapter->drv_info_dump) { - vfree(adapter->drv_info_dump); - adapter->drv_info_dump = NULL; - adapter->drv_info_size = 0; - } -} -EXPORT_SYMBOL_GPL(mwifiex_upload_device_dump); - -/* - * CFG802.11 network device handler for statistics retrieval. - */ -static struct net_device_stats *mwifiex_get_stats(struct net_device *dev) -{ - struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev); - - return &priv->stats; -} - -static u16 -mwifiex_netdev_select_wmm_queue(struct net_device *dev, struct sk_buff *skb, - void *accel_priv, select_queue_fallback_t fallback) -{ - skb->priority = cfg80211_classify8021d(skb, NULL); - return mwifiex_1d_to_wmm_queue[skb->priority]; -} - -/* Network device handlers */ -static const struct net_device_ops mwifiex_netdev_ops = { - .ndo_open = mwifiex_open, - .ndo_stop = mwifiex_close, - .ndo_start_xmit = mwifiex_hard_start_xmit, - .ndo_set_mac_address = mwifiex_set_mac_address, - .ndo_validate_addr = eth_validate_addr, - .ndo_tx_timeout = mwifiex_tx_timeout, - .ndo_get_stats = mwifiex_get_stats, - .ndo_set_rx_mode = mwifiex_set_multicast_list, - .ndo_select_queue = mwifiex_netdev_select_wmm_queue, -}; - -/* - * This function initializes the private structure parameters. - * - * The following wait queues are initialized - - * - IOCTL wait queue - * - Command wait queue - * - Statistics wait queue - * - * ...and the following default parameters are set - - * - Current key index : Set to 0 - * - Rate index : Set to auto - * - Media connected : Set to disconnected - * - Adhoc link sensed : Set to false - * - Nick name : Set to null - * - Number of Tx timeout : Set to 0 - * - Device address : Set to current address - * - Rx histogram statistc : Set to 0 - * - * In addition, the CFG80211 work queue is also created. - */ -void mwifiex_init_priv_params(struct mwifiex_private *priv, - struct net_device *dev) -{ - dev->netdev_ops = &mwifiex_netdev_ops; - dev->destructor = free_netdev; - /* Initialize private structure */ - priv->current_key_index = 0; - priv->media_connected = false; - memset(priv->mgmt_ie, 0, - sizeof(struct mwifiex_ie) * MAX_MGMT_IE_INDEX); - priv->beacon_idx = MWIFIEX_AUTO_IDX_MASK; - priv->proberesp_idx = MWIFIEX_AUTO_IDX_MASK; - priv->assocresp_idx = MWIFIEX_AUTO_IDX_MASK; - priv->gen_idx = MWIFIEX_AUTO_IDX_MASK; - priv->num_tx_timeout = 0; - ether_addr_copy(priv->curr_addr, priv->adapter->perm_addr); - memcpy(dev->dev_addr, priv->curr_addr, ETH_ALEN); - - if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA || - GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) { - priv->hist_data = kmalloc(sizeof(*priv->hist_data), GFP_KERNEL); - if (priv->hist_data) - mwifiex_hist_data_reset(priv); - } -} - -/* - * This function check if command is pending. - */ -int is_command_pending(struct mwifiex_adapter *adapter) -{ - unsigned long flags; - int is_cmd_pend_q_empty; - - spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags); - is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q); - spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags); - - return !is_cmd_pend_q_empty; -} - -/* - * This is the RX work queue function. - * - * It handles the RX operations. - */ -static void mwifiex_rx_work_queue(struct work_struct *work) -{ - struct mwifiex_adapter *adapter = - container_of(work, struct mwifiex_adapter, rx_work); - - if (adapter->surprise_removed) - return; - mwifiex_process_rx(adapter); -} - -/* - * This is the main work queue function. - * - * It handles the main process, which in turn handles the complete - * driver operations. - */ -static void mwifiex_main_work_queue(struct work_struct *work) -{ - struct mwifiex_adapter *adapter = - container_of(work, struct mwifiex_adapter, main_work); - - if (adapter->surprise_removed) - return; - mwifiex_main_process(adapter); -} - -/* - * This function adds the card. - * - * This function follows the following major steps to set up the device - - * - Initialize software. This includes probing the card, registering - * the interface operations table, and allocating/initializing the - * adapter structure - * - Set up the netlink socket - * - Create and start the main work queue - * - Register the device - * - Initialize firmware and hardware - * - Add logical interfaces - */ -int -mwifiex_add_card(void *card, struct semaphore *sem, - struct mwifiex_if_ops *if_ops, u8 iface_type) -{ - struct mwifiex_adapter *adapter; - - if (down_interruptible(sem)) - goto exit_sem_err; - - if (mwifiex_register(card, if_ops, (void **)&adapter)) { - pr_err("%s: software init failed\n", __func__); - goto err_init_sw; - } - - adapter->iface_type = iface_type; - adapter->card_sem = sem; - - adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; - adapter->surprise_removed = false; - init_waitqueue_head(&adapter->init_wait_q); - adapter->is_suspended = false; - adapter->hs_activated = false; - init_waitqueue_head(&adapter->hs_activate_wait_q); - init_waitqueue_head(&adapter->cmd_wait_q.wait); - adapter->cmd_wait_q.status = 0; - adapter->scan_wait_q_woken = false; - - if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB) { - adapter->rx_work_enabled = true; - pr_notice("rx work enabled, cpus %d\n", num_possible_cpus()); - } - - adapter->workqueue = - alloc_workqueue("MWIFIEX_WORK_QUEUE", - WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1); - if (!adapter->workqueue) - goto err_kmalloc; - - INIT_WORK(&adapter->main_work, mwifiex_main_work_queue); - - if (adapter->rx_work_enabled) { - adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE", - WQ_HIGHPRI | - WQ_MEM_RECLAIM | - WQ_UNBOUND, 1); - if (!adapter->rx_workqueue) - goto err_kmalloc; - - INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue); - } - - /* Register the device. Fill up the private data structure with relevant - information from the card. */ - if (adapter->if_ops.register_dev(adapter)) { - pr_err("%s: failed to register mwifiex device\n", __func__); - goto err_registerdev; - } - - if (mwifiex_init_hw_fw(adapter)) { - pr_err("%s: firmware init failed\n", __func__); - goto err_init_fw; - } - - return 0; - -err_init_fw: - pr_debug("info: %s: unregister device\n", __func__); - if (adapter->if_ops.unregister_dev) - adapter->if_ops.unregister_dev(adapter); - if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) { - pr_debug("info: %s: shutdown mwifiex\n", __func__); - adapter->init_wait_q_woken = false; - - if (mwifiex_shutdown_drv(adapter) == -EINPROGRESS) - wait_event_interruptible(adapter->init_wait_q, - adapter->init_wait_q_woken); - } -err_registerdev: - adapter->surprise_removed = true; - mwifiex_terminate_workqueue(adapter); -err_kmalloc: - mwifiex_free_adapter(adapter); - -err_init_sw: - up(sem); - -exit_sem_err: - return -1; -} -EXPORT_SYMBOL_GPL(mwifiex_add_card); - -/* - * This function removes the card. - * - * This function follows the following major steps to remove the device - - * - Stop data traffic - * - Shutdown firmware - * - Remove the logical interfaces - * - Terminate the work queue - * - Unregister the device - * - Free the adapter structure - */ -int mwifiex_remove_card(struct mwifiex_adapter *adapter, struct semaphore *sem) -{ - struct mwifiex_private *priv = NULL; - int i; - - if (down_interruptible(sem)) - goto exit_sem_err; - - if (!adapter) - goto exit_remove; - - /* We can no longer handle interrupts once we start doing the teardown - * below. */ - if (adapter->if_ops.disable_int) - adapter->if_ops.disable_int(adapter); - - adapter->surprise_removed = true; - - mwifiex_terminate_workqueue(adapter); - - /* Stop data */ - for (i = 0; i < adapter->priv_num; i++) { - priv = adapter->priv[i]; - if (priv && priv->netdev) { - mwifiex_stop_net_dev_queue(priv->netdev, adapter); - if (netif_carrier_ok(priv->netdev)) - netif_carrier_off(priv->netdev); - } - } - - mwifiex_dbg(adapter, CMD, - "cmd: calling mwifiex_shutdown_drv...\n"); - adapter->init_wait_q_woken = false; - - if (mwifiex_shutdown_drv(adapter) == -EINPROGRESS) - wait_event_interruptible(adapter->init_wait_q, - adapter->init_wait_q_woken); - mwifiex_dbg(adapter, CMD, - "cmd: mwifiex_shutdown_drv done\n"); - if (atomic_read(&adapter->rx_pending) || - atomic_read(&adapter->tx_pending) || - atomic_read(&adapter->cmd_pending)) { - mwifiex_dbg(adapter, ERROR, - "rx_pending=%d, tx_pending=%d,\t" - "cmd_pending=%d\n", - atomic_read(&adapter->rx_pending), - atomic_read(&adapter->tx_pending), - atomic_read(&adapter->cmd_pending)); - } - - for (i = 0; i < adapter->priv_num; i++) { - priv = adapter->priv[i]; - - if (!priv) - continue; - - rtnl_lock(); - if (priv->netdev && - priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED) - mwifiex_del_virtual_intf(adapter->wiphy, &priv->wdev); - rtnl_unlock(); - } - - wiphy_unregister(adapter->wiphy); - wiphy_free(adapter->wiphy); - - /* Unregister device */ - mwifiex_dbg(adapter, INFO, - "info: unregister device\n"); - if (adapter->if_ops.unregister_dev) - adapter->if_ops.unregister_dev(adapter); - /* Free adapter structure */ - mwifiex_dbg(adapter, INFO, - "info: free adapter\n"); - mwifiex_free_adapter(adapter); - -exit_remove: - up(sem); -exit_sem_err: - return 0; -} -EXPORT_SYMBOL_GPL(mwifiex_remove_card); - -void _mwifiex_dbg(const struct mwifiex_adapter *adapter, int mask, - const char *fmt, ...) -{ - struct va_format vaf; - va_list args; - - if (!adapter->dev || !(adapter->debug_mask & mask)) - return; - - va_start(args, fmt); - - vaf.fmt = fmt; - vaf.va = &args; - - dev_info(adapter->dev, "%pV", &vaf); - - va_end(args); -} -EXPORT_SYMBOL_GPL(_mwifiex_dbg); - -/* - * This function initializes the module. - * - * The debug FS is also initialized if configured. - */ -static int -mwifiex_init_module(void) -{ -#ifdef CONFIG_DEBUG_FS - mwifiex_debugfs_init(); -#endif - return 0; -} - -/* - * This function cleans up the module. - * - * The debug FS is removed if available. - */ -static void -mwifiex_cleanup_module(void) -{ -#ifdef CONFIG_DEBUG_FS - mwifiex_debugfs_remove(); -#endif -} - -module_init(mwifiex_init_module); -module_exit(mwifiex_cleanup_module); - -MODULE_AUTHOR("Marvell International Ltd."); -MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION); -MODULE_VERSION(VERSION); -MODULE_LICENSE("GPL v2"); |