/** * 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 #include #include "host.h" #include "decl.h" #include "dev.h" #include "wext.h" #include "cfg.h" #include "debugfs.h" #include "scan.h" #include "assoc.h" #include "cmd.h" #define DRIVER_RELEASE_VERSION "323.p0" const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION #ifdef DEBUG "-dbg" #endif ""; /* Module parameters */ unsigned int lbs_debug; EXPORT_SYMBOL_GPL(lbs_debug); module_param_named(libertas_debug, lbs_debug, int, 0644); /* This global structure is used to send the confirm_sleep command as * fast as possible down to the firmware. */ struct cmd_confirm_sleep confirm_sleep; /** * the table to keep region code */ u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] = { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 }; /** * 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 lbs_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 lbs_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; } static int lbs_add_rtap(struct lbs_private *priv); static void lbs_remove_rtap(struct lbs_private *priv); /** * Get function for sysfs attribute rtap */ static ssize_t lbs_rtap_get(struct device *dev, struct device_attribute *attr, char * buf) { struct lbs_private *priv = to_net_dev(dev)->ml_priv; return snprintf(buf, 5, "0x%X\n", priv->monitormode); } /** * Set function for sysfs attribute rtap */ static ssize_t lbs_rtap_set(struct device *dev, struct device_attribute *attr, const char * buf, size_t count) { int monitor_mode; struct lbs_private *priv = to_net_dev(dev)->ml_priv; sscanf(buf, "%x", &monitor_mode); if (monitor_mode) { if (priv->monitormode == monitor_mode) return strlen(buf); if (!priv->monitormode) { if (priv->infra_open || priv->mesh_open) return -EBUSY; if (priv->mode == IW_MODE_INFRA) lbs_cmd_80211_deauthenticate(priv, priv->curbssparams.bssid, WLAN_REASON_DEAUTH_LEAVING); else if (priv->mode == IW_MODE_ADHOC) lbs_adhoc_stop(priv); lbs_add_rtap(priv); } priv->monitormode = monitor_mode; } else { if (!priv->monitormode) return strlen(buf); priv->monitormode = 0; lbs_remove_rtap(priv); if (priv->currenttxskb) { dev_kfree_skb_any(priv->currenttxskb); priv->currenttxskb = NULL; } /* Wake queues, command thread, etc. */ lbs_host_to_card_done(priv); } lbs_prepare_and_send_command(priv, CMD_802_11_MONITOR_MODE, CMD_ACT_SET, CMD_OPTION_WAITFORRSP, 0, &priv->monitormode); return strlen(buf); } /** * lbs_rtap attribute to be exported per ethX interface * through sysfs (/sys/class/net/ethX/lbs_rtap) */ static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get, lbs_rtap_set ); /** * @brief This function opens the ethX interface * * @param dev A pointer to net_device structure * @return 0 or -EBUSY if monitor mode active */ static int lbs_dev_open(struct net_device *dev) { struct lbs_private *priv = dev->ml_priv; int ret = 0; lbs_deb_enter(LBS_DEB_NET); spin_lock_irq(&priv->driver_lock); if (priv->monitormode) { ret = -EBUSY; goto out; } priv->infra_open = 1; if (priv->connect_status == LBS_CONNECTED) netif_carrier_on(dev); else netif_carrier_off(dev); if (!priv->tx_pending_len) netif_wake_queue(dev); out: spin_unlock_irq(&priv->driver_lock); lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret); return ret; } /** * @brief This function closes the ethX interface * * @param dev A pointer to net_device structure * @return 0 */ static int lbs_eth_stop(struct net_device *dev) { struct lbs_private *priv = dev->ml_priv; lbs_deb_enter(LBS_DEB_NET); spin_lock_irq(&priv->driver_lock); priv->infra_open = 0; netif_stop_queue(dev); spin_unlock_irq(&priv->driver_lock); schedule_work(&priv->mcast_work); lbs_deb_leave(LBS_DEB_NET); return 0; } static void lbs_tx_timeout(struct net_device *dev) { struct lbs_private *priv = dev->ml_priv; lbs_deb_enter(LBS_DEB_TX); lbs_pr_err("tx watch dog timeout\n"); dev->trans_start = jiffies; if (priv->currenttxskb) lbs_send_tx_feedback(priv, 0); /* XX: Shouldn't we also call into the hw-specific driver to kick it somehow? */ lbs_host_to_card_done(priv); /* More often than not, this actually happens because the firmware has crapped itself -- rather than just a very busy medium. So send a harmless command, and if/when _that_ times out, we'll kick it in the head. */ lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0, 0, 0, NULL); lbs_deb_leave(LBS_DEB_TX); } void lbs_host_to_card_done(struct lbs_private *priv) { unsigned long flags; lbs_deb_enter(LBS_DEB_THREAD); spin_lock_irqsave(&priv->driver_lock, flags); priv->dnld_sent = DNLD_RES_RECEIVED; /* Wake main thread if commands are pending */ if (!priv->cur_cmd || priv->tx_pending_len > 0) { if (!priv->wakeup_dev_required) wake_up_interruptible(&priv->waitq); } spin_unlock_irqrestore(&priv->driver_lock, flags); lbs_deb_leave(LBS_DEB_THREAD); } EXPORT_SYMBOL_GPL(lbs_host_to_card_done); int lbs_set_mac_address(struct net_device *dev, void *addr) { int ret = 0; struct lbs_private *priv = dev->ml_priv; struct sockaddr *phwaddr = addr; struct cmd_ds_802_11_mac_address cmd; lbs_deb_enter(LBS_DEB_NET); /* In case it was called from the mesh device */ dev = priv->dev; cmd.hdr.size = cpu_to_le16(sizeof(cmd)); cmd.action = cpu_to_le16(CMD_ACT_SET); memcpy(cmd.macadd, phwaddr->sa_data, ETH_ALEN); ret = lbs_cmd_with_response(priv, CMD_802_11_MAC_ADDRESS, &cmd); if (ret) { lbs_deb_net("set MAC address failed\n"); goto done; } memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN); memcpy(dev->dev_addr, phwaddr->sa_data, ETH_ALEN); if (priv->mesh_dev) memcpy(priv->mesh_dev->dev_addr, phwaddr->sa_data, ETH_ALEN); done: lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret); return ret; } static inline int mac_in_list(unsigned char *list, int list_len, unsigned char *mac) { while (list_len) { if (!memcmp(list, mac, ETH_ALEN)) return 1; list += ETH_ALEN; list_len--; } return 0; } static int lbs_add_mcast_addrs(struct cmd_ds_mac_multicast_adr *cmd, struct net_device *dev, int nr_addrs) { int i = nr_addrs; struct dev_mc_list *mc_list; if ((dev->flags & (IFF_UP|IFF_MULTICAST)) != (IFF_UP|IFF_MULTICAST)) return nr_addrs; netif_addr_lock_bh(dev); for (mc_list = dev->mc_list; mc_list; mc_list = mc_list->next) { if (mac_in_list(cmd->maclist, nr_addrs, mc_list->dmi_addr)) { lbs_deb_net("mcast address %s:%pM skipped\n", dev->name, mc_list->dmi_addr); continue; } if (i == MRVDRV_MAX_MULTICAST_LIST_SIZE) break; memcpy(&cmd->maclist[6*i], mc_list->dmi_addr, ETH_ALEN); lbs_deb_net("mcast address %s:%pM added to filter\n", dev->name, mc_list->dmi_addr); i++; } netif_addr_unlock_bh(dev); if (mc_list) return -EOVERFLOW; return i; } static void lbs_set_mcast_worker(struct work_struct *work) { struct lbs_private *priv = container_of(work, struct lbs_private, mcast_work); struct cmd_ds_mac_multicast_adr mcast_cmd; int dev_flags; int nr_addrs; int old_mac_control = priv->mac_control; lbs_deb_enter(LBS_DEB_NET); dev_flags = priv->dev->flags; if (priv->mesh_dev) dev_flags |= priv->mesh_dev->flags; if (dev_flags & IFF_PROMISC) { priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE; priv->mac_control &= ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE | CMD_ACT_MAC_MULTICAST_ENABLE); goto out_set_mac_control; } else if (dev_flags & IFF_ALLMULTI) { do_allmulti: priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE; priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE | CMD_ACT_MAC_MULTICAST_ENABLE); goto out_set_mac_control; } /* Once for priv->dev, again for priv->mesh_dev if it exists */ nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->dev, 0); if (nr_addrs >= 0 && priv->mesh_dev) nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->mesh_dev, nr_addrs); if (nr_addrs < 0) goto do_allmulti; if (nr_addrs) { int size = offsetof(struct cmd_ds_mac_multicast_adr, maclist[6*nr_addrs]); mcast_cmd.action = cpu_to_le16(CMD_ACT_SET); mcast_cmd.hdr.size = cpu_to_le16(size); mcast_cmd.nr_of_adrs = cpu_to_le16(nr_addrs); lbs_cmd_async(priv, CMD_MAC_MULTICAST_ADR, &mcast_cmd.hdr, size); priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE; } else priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE; priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE | CMD_ACT_MAC_ALL_MULTICAST_ENABLE); out_set_mac_control: if (priv->mac_control != old_mac_control) lbs_set_mac_control(priv); lbs_deb_leave(LBS_DEB_NET); } void lbs_set_multicast_list(struct net_device *dev) { struct lbs_private *priv = dev->ml_priv; schedule_work(&priv->mcast_work); } /** * @brief This function handles the major jobs in the LBS driver. * It handles all events generated by firmware, RX data received * from firmware and TX data sent from kernel. * * @param data A pointer to lbs_thread structure * @return 0 */ static int lbs_thread(void *data) { struct net_device *dev = data; struct lbs_private *priv = dev->ml_priv; wait_queue_t wait; lbs_deb_enter(LBS_DEB_THREAD); init_waitqueue_entry(&wait, current); for (;;) { int shouldsleep; u8 resp_idx; lbs_deb_thread("1: currenttxskb %p, dnld_sent %d\n", priv->currenttxskb, priv->dnld_sent); add_wait_queue(&priv->waitq, &wait); set_current_state(TASK_INTERRUPTIBLE); spin_lock_irq(&priv->driver_lock); if (kthread_should_stop()) shouldsleep = 0; /* Bye */ else if (priv->surpriseremoved) shouldsleep = 1; /* We need to wait until we're _told_ to die */ else if (priv->psstate == PS_STATE_SLEEP) shouldsleep = 1; /* Sleep mode. Nothing we can do till it wakes */ else if (priv->cmd_timed_out) shouldsleep = 0; /* Command timed out. Recover */ else if (!priv->fw_ready) shouldsleep = 1; /* Firmware not ready. We're waiting for it */ else if (priv->dnld_sent) shouldsleep = 1; /* Something is en route to the device already */ else if (priv->tx_pending_len > 0) shouldsleep = 0; /* We've a packet to send */ else if (priv->resp_len[priv->resp_idx]) shouldsleep = 0; /* We have a command response */ else if (priv->cur_cmd) shouldsleep = 1; /* Can't send a command; one already running */ else if (!list_empty(&priv->cmdpendingq) && !(priv->wakeup_dev_required)) shouldsleep = 0; /* We have a command to send */ else if (__kfifo_len(priv->event_fifo)) shouldsleep = 0; /* We have an event to process */ else shouldsleep = 1; /* No command */ if (shouldsleep) { lbs_deb_thread("sleeping, connect_status %d, " "psmode %d, psstate %d\n", priv->connect_status, priv->psmode, priv->psstate); spin_unlock_irq(&priv->driver_lock); schedule(); } else spin_unlock_irq(&priv->driver_lock); lbs_deb_thread("2: currenttxskb %p, dnld_send %d\n", priv->currenttxskb, priv->dnld_sent); set_current_state(TASK_RUNNING); remove_wait_queue(&priv->waitq, &wait); lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n", priv->currenttxskb, priv->dnld_sent); if (kthread_should_stop()) { lbs_deb_thread("break from main thread\n"); break; } if (priv->surpriseremoved) { lbs_deb_thread("adapter removed; waiting to die...\n"); continue; } lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n", priv->currenttxskb, priv->dnld_sent); /* Process any pending command response */ spin_lock_irq(&priv->driver_lock); resp_idx = priv->resp_idx; if (priv->resp_len[resp_idx]) { spin_unlock_irq(&priv->driver_lock); lbs_process_command_response(priv, priv->resp_buf[resp_idx], priv->resp_len[resp_idx]); spin_lock_irq(&priv->driver_lock); priv->resp_len[resp_idx] = 0; } spin_unlock_irq(&priv->driver_lock); /* Process hardware events, e.g. card removed, link lost */ spin_lock_irq(&priv->driver_lock); while (__kfifo_len(priv->event_fifo)) { u32 event; __kfifo_get(priv->event_fifo, (unsigned char *) &event, sizeof(event)); spin_unlock_irq(&priv->driver_lock); lbs_process_event(priv, event); spin_lock_irq(&priv->driver_lock); } spin_unlock_irq(&priv->driver_lock); if (priv->wakeup_dev_required) { lbs_deb_thread("Waking up device...\n"); /* Wake up device */ if (priv->exit_deep_sleep(priv)) lbs_deb_thread("Wakeup device failed\n"); continue; } /* command timeout stuff */ if (priv->cmd_timed_out && priv->cur_cmd) { struct cmd_ctrl_node *cmdnode = priv->cur_cmd; if (++priv->nr_retries > 3) { lbs_pr_info("Excessive timeouts submitting " "command 0x%04x\n", le16_to_cpu(cmdnode->cmdbuf->command)); lbs_complete_command(priv, cmdnode, -ETIMEDOUT); priv->nr_retries = 0; if (priv->reset_card) priv->reset_card(priv); } else { priv->cur_cmd = NULL; priv->dnld_sent = DNLD_RES_RECEIVED; lbs_pr_info("requeueing command 0x%04x due " "to timeout (#%d)\n", le16_to_cpu(cmdnode->cmdbuf->command), priv->nr_retries); /* Stick it back at the _top_ of the pending queue for immediate resubmission */ list_add(&cmdnode->list, &priv->cmdpendingq); } } priv->cmd_timed_out = 0; if (!priv->fw_ready) continue; /* Check if we need to confirm Sleep Request received previously */ if (priv->psstate == PS_STATE_PRE_SLEEP && !priv->dnld_sent && !priv->cur_cmd) { if (priv->connect_status == LBS_CONNECTED) { lbs_deb_thread("pre-sleep, currenttxskb %p, " "dnld_sent %d, cur_cmd %p\n", priv->currenttxskb, priv->dnld_sent, priv->cur_cmd); lbs_ps_confirm_sleep(priv); } else { /* workaround for firmware sending * deauth/linkloss event immediately * after sleep request; remove this * after firmware fixes it */ priv->psstate = PS_STATE_AWAKE; lbs_pr_alert("ignore PS_SleepConfirm in " "non-connected state\n"); } } /* The PS state is changed during processing of Sleep Request * event above */ if ((priv->psstate == PS_STATE_SLEEP) || (priv->psstate == PS_STATE_PRE_SLEEP)) continue; if (priv->is_deep_sleep) continue; /* Execute the next command */ if (!priv->dnld_sent && !priv->cur_cmd) lbs_execute_next_command(priv); /* Wake-up command waiters which can't sleep in * lbs_prepare_and_send_command */ if (!list_empty(&priv->cmdpendingq)) wake_up_all(&priv->cmd_pending); spin_lock_irq(&priv->driver_lock); if (!priv->dnld_sent && priv->tx_pending_len > 0) { int ret = priv->hw_host_to_card(priv, MVMS_DAT, priv->tx_pending_buf, priv->tx_pending_len); if (ret) { lbs_deb_tx("host_to_card failed %d\n", ret); priv->dnld_sent = DNLD_RES_RECEIVED; } priv->tx_pending_len = 0; if (!priv->currenttxskb) { /* We can wake the queues immediately if we aren't waiting for TX feedback */ if (priv->connect_status == LBS_CONNECTED) netif_wake_queue(priv->dev); if (priv->mesh_dev && priv->mesh_connect_status == LBS_CONNECTED) netif_wake_queue(priv->mesh_dev); } } spin_unlock_irq(&priv->driver_lock); } del_timer(&priv->command_timer); del_timer(&priv->auto_deepsleep_timer); wake_up_all(&priv->cmd_pending); lbs_deb_leave(LBS_DEB_THREAD); return 0; } static int lbs_suspend_callback(struct lbs_private *priv, unsigned long dummy, struct cmd_header *cmd) { lbs_deb_enter(LBS_DEB_FW); netif_device_detach(priv->dev); if (priv->mesh_dev) netif_device_detach(priv->mesh_dev); priv->fw_ready = 0; lbs_deb_leave(LBS_DEB_FW); return 0; } int lbs_suspend(struct lbs_private *priv) { struct cmd_header cmd; int ret; lbs_deb_enter(LBS_DEB_FW); if (priv->wol_criteria == 0xffffffff) { lbs_pr_info("Suspend attempt without configuring wake params!\n"); return -EINVAL; } memset(&cmd, 0, sizeof(cmd)); ret = __lbs_cmd(priv, CMD_802_11_HOST_SLEEP_ACTIVATE, &cmd, sizeof(cmd), lbs_suspend_callback, 0); if (ret) lbs_pr_info("HOST_SLEEP_ACTIVATE failed: %d\n", ret); lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret); return ret; } EXPORT_SYMBOL_GPL(lbs_suspend); void lbs_resume(struct lbs_private *priv) { lbs_deb_enter(LBS_DEB_FW); priv->fw_ready = 1; /* Firmware doesn't seem to give us RX packets any more until we send it some command. Might as well update */ lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0, 0, 0, NULL); netif_device_attach(priv->dev); if (priv->mesh_dev) netif_device_attach(priv->mesh_dev); lbs_deb_leave(LBS_DEB_FW); } EXPORT_SYMBOL_GPL(lbs_resume); /** * @brief This function gets the HW spec from the firmware and sets * some basic parameters. * * @param priv A pointer to struct lbs_private structure * @return 0 or -1 */ static int lbs_setup_firmware(struct lbs_private *priv) { int ret = -1; s16 curlevel = 0, minlevel = 0, maxlevel = 0; lbs_deb_enter(LBS_DEB_FW); /* Read MAC address from firmware */ memset(priv->current_addr, 0xff, ETH_ALEN); ret = lbs_update_hw_spec(priv); if (ret) goto done; /* Read power levels if available */ ret = lbs_get_tx_power(priv, &curlevel, &minlevel, &maxlevel); if (ret == 0) { priv->txpower_cur = curlevel; priv->txpower_min = minlevel; priv->txpower_max = maxlevel; } lbs_set_mac_control(priv); done: lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret); return ret; } /** * This function handles the timeout of command sending. * It will re-send the same command again. */ static void command_timer_fn(unsigned long data) { struct lbs_private *priv = (struct lbs_private *)data; unsigned long flags; lbs_deb_enter(LBS_DEB_CMD); spin_lock_irqsave(&priv->driver_lock, flags); if (!priv->cur_cmd) goto out; lbs_pr_info("command 0x%04x timed out\n", le16_to_cpu(priv->cur_cmd->cmdbuf->command)); priv->cmd_timed_out = 1; wake_up_interruptible(&priv->waitq); out: spin_unlock_irqrestore(&priv->driver_lock, flags); lbs_deb_leave(LBS_DEB_CMD); } /** * This function put the device back to deep sleep mode when timer expires * and no activity (command, event, data etc.) is detected. */ static void auto_deepsleep_timer_fn(unsigned long data) { struct lbs_private *priv = (struct lbs_private *)data; int ret; lbs_deb_enter(LBS_DEB_CMD); if (priv->is_activity_detected) { priv->is_activity_detected = 0; } else { if (priv->is_auto_deep_sleep_enabled && (!priv->wakeup_dev_required) && (priv->connect_status != LBS_CONNECTED)) { lbs_deb_main("Entering auto deep sleep mode...\n"); ret = lbs_prepare_and_send_command(priv, CMD_802_11_DEEP_SLEEP, 0, 0, 0, NULL); if (ret) lbs_pr_err("Enter Deep Sleep command failed\n"); } } mod_timer(&priv->auto_deepsleep_timer , jiffies + (priv->auto_deep_sleep_timeout * HZ)/1000); lbs_deb_leave(LBS_DEB_CMD); } int lbs_enter_auto_deep_sleep(struct lbs_private *priv) { lbs_deb_enter(LBS_DEB_SDIO); priv->is_auto_deep_sleep_enabled = 1; if (priv->is_deep_sleep) priv->wakeup_dev_required = 1; mod_timer(&priv->auto_deepsleep_timer , jiffies + (priv->auto_deep_sleep_timeout * HZ)/1000); lbs_deb_leave(LBS_DEB_SDIO); return 0; } int lbs_exit_auto_deep_sleep(struct lbs_private *priv) { lbs_deb_enter(LBS_DEB_SDIO); priv->is_auto_deep_sleep_enabled = 0; priv->auto_deep_sleep_timeout = 0; del_timer(&priv->auto_deepsleep_timer); lbs_deb_leave(LBS_DEB_SDIO); return 0; } static int lbs_init_adapter(struct lbs_private *priv) { size_t bufsize; int i, ret = 0; lbs_deb_enter(LBS_DEB_MAIN); /* Allocate buffer to store the BSSID list */ bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor); priv->networks = kzalloc(bufsize, GFP_KERNEL); if (!priv->networks) { lbs_pr_err("Out of memory allocating beacons\n"); ret = -1; goto out; } /* Initialize scan result lists */ INIT_LIST_HEAD(&priv->network_free_list); INIT_LIST_HEAD(&priv->network_list); for (i = 0; i < MAX_NETWORK_COUNT; i++) { list_add_tail(&priv->networks[i].list, &priv->network_free_list); } memset(priv->current_addr, 0xff, ETH_ALEN); priv->connect_status = LBS_DISCONNECTED; priv->mesh_connect_status = LBS_DISCONNECTED; priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM; priv->mode = IW_MODE_INFRA; priv->channel = DEFAULT_AD_HOC_CHANNEL; priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON; priv->radio_on = 1; priv->enablehwauto = 1; priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE; priv->psmode = LBS802_11POWERMODECAM; priv->psstate = PS_STATE_FULL_POWER; priv->is_deep_sleep = 0; priv->is_auto_deep_sleep_enabled = 0; priv->wakeup_dev_required = 0; init_waitqueue_head(&priv->ds_awake_q); mutex_init(&priv->lock); setup_timer(&priv->command_timer, command_timer_fn, (unsigned long)priv); setup_timer(&priv->auto_deepsleep_timer, auto_deepsleep_timer_fn, (unsigned long)priv); INIT_LIST_HEAD(&priv->cmdfreeq); INIT_LIST_HEAD(&priv->cmdpendingq); spin_lock_init(&priv->driver_lock); init_waitqueue_head(&priv->cmd_pending); /* Allocate the command buffers */ if (lbs_allocate_cmd_buffer(priv)) { lbs_pr_err("Out of memory allocating command buffers\n"); ret = -ENOMEM; goto out; } priv->resp_idx = 0; priv->resp_len[0] = priv->resp_len[1] = 0; /* Create the event FIFO */ priv->event_fifo = kfifo_alloc(sizeof(u32) * 16, GFP_KERNEL, NULL); if (IS_ERR(priv->event_fifo)) { lbs_pr_err("Out of memory allocating event FIFO buffer\n"); ret = -ENOMEM; goto out; } out: lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret); return ret; } static void lbs_free_adapter(struct lbs_private *priv) { lbs_deb_enter(LBS_DEB_MAIN); lbs_free_cmd_buffer(priv); if (priv->event_fifo) kfifo_free(priv->event_fifo); del_timer(&priv->command_timer); del_timer(&priv->auto_deepsleep_timer); kfree(priv->networks); priv->networks = NULL; lbs_deb_leave(LBS_DEB_MAIN); } static const struct net_device_ops lbs_netdev_ops = { .ndo_open = lbs_dev_open, .ndo_stop = lbs_eth_stop, .ndo_start_xmit = lbs_hard_start_xmit, .ndo_set_mac_address = lbs_set_mac_address, .ndo_tx_timeout = lbs_tx_timeout, .ndo_set_multicast_list = lbs_set_multicast_list, .ndo_change_mtu = eth_change_mtu, .ndo_validate_addr = eth_validate_addr, }; /** * @brief This function adds the card. it will probe the * card, allocate the lbs_priv and initialize the device. * * @param card A pointer to card * @return A pointer to struct lbs_private structure */ struct lbs_private *lbs_add_card(void *card, struct device *dmdev) { struct net_device *dev; struct wireless_dev *wdev; struct lbs_private *priv = NULL; lbs_deb_enter(LBS_DEB_MAIN); /* Allocate an Ethernet device and register it */ wdev = lbs_cfg_alloc(dmdev); if (IS_ERR(wdev)) { lbs_pr_err("cfg80211 init failed\n"); goto done; } /* TODO? */ wdev->iftype = NL80211_IFTYPE_STATION; priv = wdev_priv(wdev); priv->wdev = wdev; if (lbs_init_adapter(priv)) { lbs_pr_err("failed to initialize adapter structure.\n"); goto err_wdev; } //TODO? dev = alloc_netdev_mq(0, "wlan%d", ether_setup, IWM_TX_QUEUES); dev = alloc_netdev(0, "wlan%d", ether_setup); if (!dev) { dev_err(dmdev, "no memory for network device instance\n"); goto err_adapter; } dev->ieee80211_ptr = wdev; dev->ml_priv = priv; SET_NETDEV_DEV(dev, dmdev); wdev->netdev = dev; priv->dev = dev; dev->netdev_ops = &lbs_netdev_ops; dev->watchdog_timeo = 5 * HZ; dev->ethtool_ops = &lbs_ethtool_ops; #ifdef WIRELESS_EXT dev->wireless_handlers = &lbs_handler_def; #endif dev->flags |= IFF_BROADCAST | IFF_MULTICAST; // TODO: kzalloc + iwm_init_default_profile(iwm, iwm->umac_profile); ?? priv->card = card; priv->infra_open = 0; priv->rtap_net_dev = NULL; strcpy(dev->name, "wlan%d"); lbs_deb_thread("Starting main thread...\n"); init_waitqueue_head(&priv->waitq); priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main"); if (IS_ERR(priv->main_thread)) { lbs_deb_thread("Error creating main thread.\n"); goto err_ndev; } priv->work_thread = create_singlethread_workqueue("lbs_worker"); INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker); INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker); INIT_WORK(&priv->mcast_work, lbs_set_mcast_worker); priv->mesh_open = 0; sprintf(priv->mesh_ssid, "mesh"); priv->mesh_ssid_len = 4; priv->wol_criteria = 0xffffffff; priv->wol_gpio = 0xff; goto done; err_ndev: free_netdev(dev); err_adapter: lbs_free_adapter(priv); err_wdev: lbs_cfg_free(priv); priv = NULL; done: lbs_deb_leave_args(LBS_DEB_MAIN, "priv %p", priv); return priv; } EXPORT_SYMBOL_GPL(lbs_add_card); void lbs_remove_card(struct lbs_private *priv) { struct net_device *dev = priv->dev; lbs_deb_enter(LBS_DEB_MAIN); lbs_remove_mesh(priv); lbs_remove_rtap(priv); dev = priv->dev; cancel_delayed_work_sync(&priv->scan_work); cancel_delayed_work_sync(&priv->assoc_work); cancel_work_sync(&priv->mcast_work); /* worker thread destruction blocks on the in-flight command which * should have been cleared already in lbs_stop_card(). */ lbs_deb_main("destroying worker thread\n"); destroy_workqueue(priv->work_thread); lbs_deb_main("done destroying worker thread\n"); if (priv->psmode == LBS802_11POWERMODEMAX_PSP) { priv->psmode = LBS802_11POWERMODECAM; lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP); } lbs_send_disconnect_notification(priv); if (priv->is_deep_sleep) { priv->is_deep_sleep = 0; wake_up_interruptible(&priv->ds_awake_q); } /* Stop the thread servicing the interrupts */ priv->surpriseremoved = 1; kthread_stop(priv->main_thread); lbs_free_adapter(priv); lbs_cfg_free(priv); priv->dev = NULL; free_netdev(dev); lbs_deb_leave(LBS_DEB_MAIN); } EXPORT_SYMBOL_GPL(lbs_remove_card); int lbs_start_card(struct lbs_private *priv) { struct net_device *dev = priv->dev; int ret = -1; lbs_deb_enter(LBS_DEB_MAIN); /* poke the firmware */ ret = lbs_setup_firmware(priv); if (ret) goto done; if (lbs_cfg_register(priv)) { lbs_pr_err("cannot register device\n"); goto done; } lbs_update_channel(priv); /* * While rtap isn't related to mesh, only mesh-enabled * firmware implements the rtap functionality via * CMD_802_11_MONITOR_MODE. */ if (lbs_init_mesh(priv)) { if (device_create_file(&dev->dev, &dev_attr_lbs_rtap)) lbs_pr_err("cannot register lbs_rtap attribute\n"); } lbs_debugfs_init_one(priv, dev); lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name); ret = 0; done: lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret); return ret; } EXPORT_SYMBOL_GPL(lbs_start_card); void lbs_stop_card(struct lbs_private *priv) { struct net_device *dev; struct cmd_ctrl_node *cmdnode; unsigned long flags; lbs_deb_enter(LBS_DEB_MAIN); if (!priv) goto out; dev = priv->dev; netif_stop_queue(dev); netif_carrier_off(dev); lbs_debugfs_remove_one(priv); if (lbs_deinit_mesh(priv)) device_remove_file(&dev->dev, &dev_attr_lbs_rtap); /* Delete the timeout of the currently processing command */ del_timer_sync(&priv->command_timer); del_timer_sync(&priv->auto_deepsleep_timer); /* Flush pending command nodes */ spin_lock_irqsave(&priv->driver_lock, flags); lbs_deb_main("clearing pending commands\n"); list_for_each_entry(cmdnode, &priv->cmdpendingq, list) { cmdnode->result = -ENOENT; cmdnode->cmdwaitqwoken = 1; wake_up_interruptible(&cmdnode->cmdwait_q); } /* Flush the command the card is currently processing */ if (priv->cur_cmd) { lbs_deb_main("clearing current command\n"); priv->cur_cmd->result = -ENOENT; priv->cur_cmd->cmdwaitqwoken = 1; wake_up_interruptible(&priv->cur_cmd->cmdwait_q); } lbs_deb_main("done clearing commands\n"); spin_unlock_irqrestore(&priv->driver_lock, flags); unregister_netdev(dev); out: lbs_deb_leave(LBS_DEB_MAIN); } EXPORT_SYMBOL_GPL(lbs_stop_card); void lbs_queue_event(struct lbs_private *priv, u32 event) { unsigned long flags; lbs_deb_enter(LBS_DEB_THREAD); spin_lock_irqsave(&priv->driver_lock, flags); if (priv->psstate == PS_STATE_SLEEP) priv->psstate = PS_STATE_AWAKE; __kfifo_put(priv->event_fifo, (unsigned char *) &event, sizeof(u32)); wake_up_interruptible(&priv->waitq); spin_unlock_irqrestore(&priv->driver_lock, flags); lbs_deb_leave(LBS_DEB_THREAD); } EXPORT_SYMBOL_GPL(lbs_queue_event); void lbs_notify_command_response(struct lbs_private *priv, u8 resp_idx) { lbs_deb_enter(LBS_DEB_THREAD); if (priv->psstate == PS_STATE_SLEEP) priv->psstate = PS_STATE_AWAKE; /* Swap buffers by flipping the response index */ BUG_ON(resp_idx > 1); priv->resp_idx = resp_idx; wake_up_interruptible(&priv->waitq); lbs_deb_leave(LBS_DEB_THREAD); } EXPORT_SYMBOL_GPL(lbs_notify_command_response); static int __init lbs_init_module(void) { lbs_deb_enter(LBS_DEB_MAIN); memset(&confirm_sleep, 0, sizeof(confirm_sleep)); confirm_sleep.hdr.command = cpu_to_le16(CMD_802_11_PS_MODE); confirm_sleep.hdr.size = cpu_to_le16(sizeof(confirm_sleep)); confirm_sleep.action = cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED); lbs_debugfs_init(); lbs_deb_leave(LBS_DEB_MAIN); return 0; } static void __exit lbs_exit_module(void) { lbs_deb_enter(LBS_DEB_MAIN); lbs_debugfs_remove(); lbs_deb_leave(LBS_DEB_MAIN); } /* * rtap interface support fuctions */ static int lbs_rtap_open(struct net_device *dev) { /* Yes, _stop_ the queue. Because we don't support injection */ lbs_deb_enter(LBS_DEB_MAIN); netif_carrier_off(dev); netif_stop_queue(dev); lbs_deb_leave(LBS_DEB_LEAVE); return 0; } static int lbs_rtap_stop(struct net_device *dev) { lbs_deb_enter(LBS_DEB_MAIN); lbs_deb_leave(LBS_DEB_MAIN); return 0; } static netdev_tx_t lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) { netif_stop_queue(dev); return NETDEV_TX_BUSY; } static void lbs_remove_rtap(struct lbs_private *priv) { lbs_deb_enter(LBS_DEB_MAIN); if (priv->rtap_net_dev == NULL) goto out; unregister_netdev(priv->rtap_net_dev); free_netdev(priv->rtap_net_dev); priv->rtap_net_dev = NULL; out: lbs_deb_leave(LBS_DEB_MAIN); } static const struct net_device_ops rtap_netdev_ops = { .ndo_open = lbs_rtap_open, .ndo_stop = lbs_rtap_stop, .ndo_start_xmit = lbs_rtap_hard_start_xmit, }; static int lbs_add_rtap(struct lbs_private *priv) { int ret = 0; struct net_device *rtap_dev; lbs_deb_enter(LBS_DEB_MAIN); if (priv->rtap_net_dev) { ret = -EPERM; goto out; } rtap_dev = alloc_netdev(0, "rtap%d", ether_setup); if (rtap_dev == NULL) { ret = -ENOMEM; goto out; } memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN); rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP; rtap_dev->netdev_ops = &rtap_netdev_ops; rtap_dev->ml_priv = priv; SET_NETDEV_DEV(rtap_dev, priv->dev->dev.parent); ret = register_netdev(rtap_dev); if (ret) { free_netdev(rtap_dev); goto out; } priv->rtap_net_dev = rtap_dev; out: lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret); return ret; } module_init(lbs_init_module); module_exit(lbs_exit_module); MODULE_DESCRIPTION("Libertas WLAN Driver Library"); MODULE_AUTHOR("Marvell International Ltd."); MODULE_LICENSE("GPL");