| /* IEEE 802.11 SoftMAC layer |
| * Copyright (c) 2005 Andrea Merello <andrea.merello@gmail.com> |
| * |
| * Mostly extracted from the rtl8180-sa2400 driver for the |
| * in-kernel generic ieee802.11 stack. |
| * |
| * Few lines might be stolen from other part of the rtllib |
| * stack. Copyright who own it's copyright |
| * |
| * WPA code stolen from the ipw2200 driver. |
| * Copyright who own it's copyright. |
| * |
| * released under the GPL |
| */ |
| |
| |
| #include "rtllib.h" |
| |
| #include <linux/random.h> |
| #include <linux/delay.h> |
| #include <linux/uaccess.h> |
| #include <linux/etherdevice.h> |
| #include <linux/ieee80211.h> |
| #include "dot11d.h" |
| |
| static void rtllib_sta_wakeup(struct rtllib_device *ieee, short nl); |
| |
| |
| static short rtllib_is_54g(struct rtllib_network *net) |
| { |
| return (net->rates_ex_len > 0) || (net->rates_len > 4); |
| } |
| |
| /* returns the total length needed for placing the RATE MFIE |
| * tag and the EXTENDED RATE MFIE tag if needed. |
| * It encludes two bytes per tag for the tag itself and its len |
| */ |
| static unsigned int rtllib_MFIE_rate_len(struct rtllib_device *ieee) |
| { |
| unsigned int rate_len = 0; |
| |
| if (ieee->modulation & RTLLIB_CCK_MODULATION) |
| rate_len = RTLLIB_CCK_RATE_LEN + 2; |
| |
| if (ieee->modulation & RTLLIB_OFDM_MODULATION) |
| |
| rate_len += RTLLIB_OFDM_RATE_LEN + 2; |
| |
| return rate_len; |
| } |
| |
| /* place the MFIE rate, tag to the memory (double) pointed. |
| * Then it updates the pointer so that |
| * it points after the new MFIE tag added. |
| */ |
| static void rtllib_MFIE_Brate(struct rtllib_device *ieee, u8 **tag_p) |
| { |
| u8 *tag = *tag_p; |
| |
| if (ieee->modulation & RTLLIB_CCK_MODULATION) { |
| *tag++ = MFIE_TYPE_RATES; |
| *tag++ = 4; |
| *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_1MB; |
| *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_2MB; |
| *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_5MB; |
| *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_11MB; |
| } |
| |
| /* We may add an option for custom rates that specific HW |
| * might support |
| */ |
| *tag_p = tag; |
| } |
| |
| static void rtllib_MFIE_Grate(struct rtllib_device *ieee, u8 **tag_p) |
| { |
| u8 *tag = *tag_p; |
| |
| if (ieee->modulation & RTLLIB_OFDM_MODULATION) { |
| *tag++ = MFIE_TYPE_RATES_EX; |
| *tag++ = 8; |
| *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_6MB; |
| *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_9MB; |
| *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_12MB; |
| *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_18MB; |
| *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_24MB; |
| *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_36MB; |
| *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_48MB; |
| *tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_54MB; |
| } |
| /* We may add an option for custom rates that specific HW might |
| * support |
| */ |
| *tag_p = tag; |
| } |
| |
| static void rtllib_WMM_Info(struct rtllib_device *ieee, u8 **tag_p) |
| { |
| u8 *tag = *tag_p; |
| |
| *tag++ = MFIE_TYPE_GENERIC; |
| *tag++ = 7; |
| *tag++ = 0x00; |
| *tag++ = 0x50; |
| *tag++ = 0xf2; |
| *tag++ = 0x02; |
| *tag++ = 0x00; |
| *tag++ = 0x01; |
| *tag++ = MAX_SP_Len; |
| *tag_p = tag; |
| } |
| |
| static void rtllib_TURBO_Info(struct rtllib_device *ieee, u8 **tag_p) |
| { |
| u8 *tag = *tag_p; |
| |
| *tag++ = MFIE_TYPE_GENERIC; |
| *tag++ = 7; |
| *tag++ = 0x00; |
| *tag++ = 0xe0; |
| *tag++ = 0x4c; |
| *tag++ = 0x01; |
| *tag++ = 0x02; |
| *tag++ = 0x11; |
| *tag++ = 0x00; |
| |
| *tag_p = tag; |
| netdev_alert(ieee->dev, "This is enable turbo mode IE process\n"); |
| } |
| |
| static void enqueue_mgmt(struct rtllib_device *ieee, struct sk_buff *skb) |
| { |
| int nh; |
| |
| nh = (ieee->mgmt_queue_head + 1) % MGMT_QUEUE_NUM; |
| |
| /* if the queue is full but we have newer frames then |
| * just overwrites the oldest. |
| * |
| * if (nh == ieee->mgmt_queue_tail) |
| * return -1; |
| */ |
| ieee->mgmt_queue_head = nh; |
| ieee->mgmt_queue_ring[nh] = skb; |
| |
| } |
| |
| static void init_mgmt_queue(struct rtllib_device *ieee) |
| { |
| ieee->mgmt_queue_tail = ieee->mgmt_queue_head = 0; |
| } |
| |
| |
| u8 |
| MgntQuery_TxRateExcludeCCKRates(struct rtllib_device *ieee) |
| { |
| u16 i; |
| u8 QueryRate = 0; |
| u8 BasicRate; |
| |
| |
| for (i = 0; i < ieee->current_network.rates_len; i++) { |
| BasicRate = ieee->current_network.rates[i]&0x7F; |
| if (!rtllib_is_cck_rate(BasicRate)) { |
| if (QueryRate == 0) { |
| QueryRate = BasicRate; |
| } else { |
| if (BasicRate < QueryRate) |
| QueryRate = BasicRate; |
| } |
| } |
| } |
| |
| if (QueryRate == 0) { |
| QueryRate = 12; |
| netdev_info(ieee->dev, "No BasicRate found!!\n"); |
| } |
| return QueryRate; |
| } |
| |
| static u8 MgntQuery_MgntFrameTxRate(struct rtllib_device *ieee) |
| { |
| struct rt_hi_throughput *pHTInfo = ieee->pHTInfo; |
| u8 rate; |
| |
| if (pHTInfo->IOTAction & HT_IOT_ACT_MGNT_USE_CCK_6M) |
| rate = 0x0c; |
| else |
| rate = ieee->basic_rate & 0x7f; |
| |
| if (rate == 0) { |
| if (ieee->mode == IEEE_A || |
| ieee->mode == IEEE_N_5G || |
| (ieee->mode == IEEE_N_24G && !pHTInfo->bCurSuppCCK)) |
| rate = 0x0c; |
| else |
| rate = 0x02; |
| } |
| |
| return rate; |
| } |
| |
| inline void softmac_mgmt_xmit(struct sk_buff *skb, struct rtllib_device *ieee) |
| { |
| unsigned long flags; |
| short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE; |
| struct rtllib_hdr_3addr *header = |
| (struct rtllib_hdr_3addr *) skb->data; |
| |
| struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + 8); |
| |
| spin_lock_irqsave(&ieee->lock, flags); |
| |
| /* called with 2nd param 0, no mgmt lock required */ |
| rtllib_sta_wakeup(ieee, 0); |
| |
| if (le16_to_cpu(header->frame_ctl) == RTLLIB_STYPE_BEACON) |
| tcb_desc->queue_index = BEACON_QUEUE; |
| else |
| tcb_desc->queue_index = MGNT_QUEUE; |
| |
| if (ieee->disable_mgnt_queue) |
| tcb_desc->queue_index = HIGH_QUEUE; |
| |
| tcb_desc->data_rate = MgntQuery_MgntFrameTxRate(ieee); |
| tcb_desc->RATRIndex = 7; |
| tcb_desc->bTxDisableRateFallBack = 1; |
| tcb_desc->bTxUseDriverAssingedRate = 1; |
| if (single) { |
| if (ieee->queue_stop) { |
| enqueue_mgmt(ieee, skb); |
| } else { |
| header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0]<<4); |
| |
| if (ieee->seq_ctrl[0] == 0xFFF) |
| ieee->seq_ctrl[0] = 0; |
| else |
| ieee->seq_ctrl[0]++; |
| |
| /* avoid watchdog triggers */ |
| ieee->softmac_data_hard_start_xmit(skb, ieee->dev, |
| ieee->basic_rate); |
| } |
| |
| spin_unlock_irqrestore(&ieee->lock, flags); |
| } else { |
| spin_unlock_irqrestore(&ieee->lock, flags); |
| spin_lock_irqsave(&ieee->mgmt_tx_lock, flags); |
| |
| header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4); |
| |
| if (ieee->seq_ctrl[0] == 0xFFF) |
| ieee->seq_ctrl[0] = 0; |
| else |
| ieee->seq_ctrl[0]++; |
| |
| /* check whether the managed packet queued greater than 5 */ |
| if (!ieee->check_nic_enough_desc(ieee->dev, |
| tcb_desc->queue_index) || |
| skb_queue_len(&ieee->skb_waitQ[tcb_desc->queue_index]) || |
| ieee->queue_stop) { |
| /* insert the skb packet to the management queue |
| * |
| * as for the completion function, it does not need |
| * to check it any more. |
| */ |
| netdev_info(ieee->dev, |
| "%s():insert to waitqueue, queue_index:%d!\n", |
| __func__, tcb_desc->queue_index); |
| skb_queue_tail(&ieee->skb_waitQ[tcb_desc->queue_index], |
| skb); |
| } else { |
| ieee->softmac_hard_start_xmit(skb, ieee->dev); |
| } |
| spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags); |
| } |
| } |
| |
| static inline void |
| softmac_ps_mgmt_xmit(struct sk_buff *skb, |
| struct rtllib_device *ieee) |
| { |
| short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE; |
| struct rtllib_hdr_3addr *header = |
| (struct rtllib_hdr_3addr *) skb->data; |
| u16 fc, type, stype; |
| struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + 8); |
| |
| fc = le16_to_cpu(header->frame_ctl); |
| type = WLAN_FC_GET_TYPE(fc); |
| stype = WLAN_FC_GET_STYPE(fc); |
| |
| |
| if (stype != RTLLIB_STYPE_PSPOLL) |
| tcb_desc->queue_index = MGNT_QUEUE; |
| else |
| tcb_desc->queue_index = HIGH_QUEUE; |
| |
| if (ieee->disable_mgnt_queue) |
| tcb_desc->queue_index = HIGH_QUEUE; |
| |
| |
| tcb_desc->data_rate = MgntQuery_MgntFrameTxRate(ieee); |
| tcb_desc->RATRIndex = 7; |
| tcb_desc->bTxDisableRateFallBack = 1; |
| tcb_desc->bTxUseDriverAssingedRate = 1; |
| if (single) { |
| if (type != RTLLIB_FTYPE_CTL) { |
| header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4); |
| |
| if (ieee->seq_ctrl[0] == 0xFFF) |
| ieee->seq_ctrl[0] = 0; |
| else |
| ieee->seq_ctrl[0]++; |
| |
| } |
| /* avoid watchdog triggers */ |
| ieee->softmac_data_hard_start_xmit(skb, ieee->dev, |
| ieee->basic_rate); |
| |
| } else { |
| if (type != RTLLIB_FTYPE_CTL) { |
| header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4); |
| |
| if (ieee->seq_ctrl[0] == 0xFFF) |
| ieee->seq_ctrl[0] = 0; |
| else |
| ieee->seq_ctrl[0]++; |
| } |
| ieee->softmac_hard_start_xmit(skb, ieee->dev); |
| |
| } |
| } |
| |
| static inline struct sk_buff *rtllib_probe_req(struct rtllib_device *ieee) |
| { |
| unsigned int len, rate_len; |
| u8 *tag; |
| struct sk_buff *skb; |
| struct rtllib_probe_request *req; |
| |
| len = ieee->current_network.ssid_len; |
| |
| rate_len = rtllib_MFIE_rate_len(ieee); |
| |
| skb = dev_alloc_skb(sizeof(struct rtllib_probe_request) + |
| 2 + len + rate_len + ieee->tx_headroom); |
| |
| if (!skb) |
| return NULL; |
| |
| skb_reserve(skb, ieee->tx_headroom); |
| |
| req = skb_put(skb, sizeof(struct rtllib_probe_request)); |
| req->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_PROBE_REQ); |
| req->header.duration_id = 0; |
| |
| eth_broadcast_addr(req->header.addr1); |
| ether_addr_copy(req->header.addr2, ieee->dev->dev_addr); |
| eth_broadcast_addr(req->header.addr3); |
| |
| tag = skb_put(skb, len + 2 + rate_len); |
| |
| *tag++ = MFIE_TYPE_SSID; |
| *tag++ = len; |
| memcpy(tag, ieee->current_network.ssid, len); |
| tag += len; |
| |
| rtllib_MFIE_Brate(ieee, &tag); |
| rtllib_MFIE_Grate(ieee, &tag); |
| |
| return skb; |
| } |
| |
| static struct sk_buff *rtllib_get_beacon_(struct rtllib_device *ieee); |
| |
| static void rtllib_send_beacon(struct rtllib_device *ieee) |
| { |
| struct sk_buff *skb; |
| |
| if (!ieee->ieee_up) |
| return; |
| skb = rtllib_get_beacon_(ieee); |
| |
| if (skb) { |
| softmac_mgmt_xmit(skb, ieee); |
| ieee->softmac_stats.tx_beacons++; |
| } |
| |
| if (ieee->beacon_txing && ieee->ieee_up) |
| mod_timer(&ieee->beacon_timer, jiffies + |
| (msecs_to_jiffies(ieee->current_network.beacon_interval - 5))); |
| } |
| |
| |
| static void rtllib_send_beacon_cb(unsigned long _ieee) |
| { |
| struct rtllib_device *ieee = |
| (struct rtllib_device *) _ieee; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&ieee->beacon_lock, flags); |
| rtllib_send_beacon(ieee); |
| spin_unlock_irqrestore(&ieee->beacon_lock, flags); |
| } |
| |
| /* Enables network monitor mode, all rx packets will be received. */ |
| void rtllib_EnableNetMonitorMode(struct net_device *dev, |
| bool bInitState) |
| { |
| struct rtllib_device *ieee = netdev_priv_rsl(dev); |
| |
| netdev_info(dev, "========>Enter Monitor Mode\n"); |
| |
| ieee->AllowAllDestAddrHandler(dev, true, !bInitState); |
| } |
| |
| |
| /* Disables network monitor mode. Only packets destinated to |
| * us will be received. |
| */ |
| void rtllib_DisableNetMonitorMode(struct net_device *dev, |
| bool bInitState) |
| { |
| struct rtllib_device *ieee = netdev_priv_rsl(dev); |
| |
| netdev_info(dev, "========>Exit Monitor Mode\n"); |
| |
| ieee->AllowAllDestAddrHandler(dev, false, !bInitState); |
| } |
| |
| |
| /* Enables the specialized promiscuous mode required by Intel. |
| * In this mode, Intel intends to hear traffics from/to other STAs in the |
| * same BSS. Therefore we don't have to disable checking BSSID and we only need |
| * to allow all dest. BUT: if we enable checking BSSID then we can't recv |
| * packets from other STA. |
| */ |
| void rtllib_EnableIntelPromiscuousMode(struct net_device *dev, |
| bool bInitState) |
| { |
| bool bFilterOutNonAssociatedBSSID = false; |
| |
| struct rtllib_device *ieee = netdev_priv_rsl(dev); |
| |
| netdev_info(dev, "========>Enter Intel Promiscuous Mode\n"); |
| |
| ieee->AllowAllDestAddrHandler(dev, true, !bInitState); |
| ieee->SetHwRegHandler(dev, HW_VAR_CECHK_BSSID, |
| (u8 *)&bFilterOutNonAssociatedBSSID); |
| |
| ieee->bNetPromiscuousMode = true; |
| } |
| EXPORT_SYMBOL(rtllib_EnableIntelPromiscuousMode); |
| |
| |
| /* Disables the specialized promiscuous mode required by Intel. |
| * See MgntEnableIntelPromiscuousMode for detail. |
| */ |
| void rtllib_DisableIntelPromiscuousMode(struct net_device *dev, |
| bool bInitState) |
| { |
| bool bFilterOutNonAssociatedBSSID = true; |
| |
| struct rtllib_device *ieee = netdev_priv_rsl(dev); |
| |
| netdev_info(dev, "========>Exit Intel Promiscuous Mode\n"); |
| |
| ieee->AllowAllDestAddrHandler(dev, false, !bInitState); |
| ieee->SetHwRegHandler(dev, HW_VAR_CECHK_BSSID, |
| (u8 *)&bFilterOutNonAssociatedBSSID); |
| |
| ieee->bNetPromiscuousMode = false; |
| } |
| EXPORT_SYMBOL(rtllib_DisableIntelPromiscuousMode); |
| |
| static void rtllib_send_probe(struct rtllib_device *ieee, u8 is_mesh) |
| { |
| struct sk_buff *skb; |
| |
| skb = rtllib_probe_req(ieee); |
| if (skb) { |
| softmac_mgmt_xmit(skb, ieee); |
| ieee->softmac_stats.tx_probe_rq++; |
| } |
| } |
| |
| |
| static void rtllib_send_probe_requests(struct rtllib_device *ieee, u8 is_mesh) |
| { |
| if (ieee->active_scan && (ieee->softmac_features & |
| IEEE_SOFTMAC_PROBERQ)) { |
| rtllib_send_probe(ieee, 0); |
| rtllib_send_probe(ieee, 0); |
| } |
| } |
| |
| static void rtllib_update_active_chan_map(struct rtllib_device *ieee) |
| { |
| memcpy(ieee->active_channel_map, GET_DOT11D_INFO(ieee)->channel_map, |
| MAX_CHANNEL_NUMBER+1); |
| } |
| |
| /* this performs syncro scan blocking the caller until all channels |
| * in the allowed channel map has been checked. |
| */ |
| static void rtllib_softmac_scan_syncro(struct rtllib_device *ieee, u8 is_mesh) |
| { |
| union iwreq_data wrqu; |
| short ch = 0; |
| |
| rtllib_update_active_chan_map(ieee); |
| |
| ieee->be_scan_inprogress = true; |
| |
| mutex_lock(&ieee->scan_mutex); |
| |
| while (1) { |
| do { |
| ch++; |
| if (ch > MAX_CHANNEL_NUMBER) |
| goto out; /* scan completed */ |
| } while (!ieee->active_channel_map[ch]); |
| |
| /* this function can be called in two situations |
| * 1- We have switched to ad-hoc mode and we are |
| * performing a complete syncro scan before conclude |
| * there are no interesting cell and to create a |
| * new one. In this case the link state is |
| * RTLLIB_NOLINK until we found an interesting cell. |
| * If so the ieee8021_new_net, called by the RX path |
| * will set the state to RTLLIB_LINKED, so we stop |
| * scanning |
| * 2- We are linked and the root uses run iwlist scan. |
| * So we switch to RTLLIB_LINKED_SCANNING to remember |
| * that we are still logically linked (not interested in |
| * new network events, despite for updating the net list, |
| * but we are temporarly 'unlinked' as the driver shall |
| * not filter RX frames and the channel is changing. |
| * So the only situation in which are interested is to check |
| * if the state become LINKED because of the #1 situation |
| */ |
| |
| if (ieee->state == RTLLIB_LINKED) |
| goto out; |
| if (ieee->sync_scan_hurryup) { |
| netdev_info(ieee->dev, |
| "============>sync_scan_hurryup out\n"); |
| goto out; |
| } |
| |
| ieee->set_chan(ieee->dev, ch); |
| if (ieee->active_channel_map[ch] == 1) |
| rtllib_send_probe_requests(ieee, 0); |
| |
| /* this prevent excessive time wait when we |
| * need to wait for a syncro scan to end.. |
| */ |
| msleep_interruptible_rsl(RTLLIB_SOFTMAC_SCAN_TIME); |
| } |
| out: |
| ieee->actscanning = false; |
| ieee->sync_scan_hurryup = 0; |
| |
| if (ieee->state >= RTLLIB_LINKED) { |
| if (IS_DOT11D_ENABLE(ieee)) |
| DOT11D_ScanComplete(ieee); |
| } |
| mutex_unlock(&ieee->scan_mutex); |
| |
| ieee->be_scan_inprogress = false; |
| |
| memset(&wrqu, 0, sizeof(wrqu)); |
| wireless_send_event(ieee->dev, SIOCGIWSCAN, &wrqu, NULL); |
| } |
| |
| static void rtllib_softmac_scan_wq(void *data) |
| { |
| struct rtllib_device *ieee = container_of_dwork_rsl(data, |
| struct rtllib_device, softmac_scan_wq); |
| u8 last_channel = ieee->current_network.channel; |
| |
| rtllib_update_active_chan_map(ieee); |
| |
| if (!ieee->ieee_up) |
| return; |
| if (rtllib_act_scanning(ieee, true)) |
| return; |
| |
| mutex_lock(&ieee->scan_mutex); |
| |
| if (ieee->eRFPowerState == eRfOff) { |
| netdev_info(ieee->dev, |
| "======>%s():rf state is eRfOff, return\n", |
| __func__); |
| goto out1; |
| } |
| |
| do { |
| ieee->current_network.channel = |
| (ieee->current_network.channel + 1) % |
| MAX_CHANNEL_NUMBER; |
| if (ieee->scan_watch_dog++ > MAX_CHANNEL_NUMBER) { |
| if (!ieee->active_channel_map[ieee->current_network.channel]) |
| ieee->current_network.channel = 6; |
| goto out; /* no good chans */ |
| } |
| } while (!ieee->active_channel_map[ieee->current_network.channel]); |
| |
| if (ieee->scanning_continue == 0) |
| goto out; |
| |
| ieee->set_chan(ieee->dev, ieee->current_network.channel); |
| |
| if (ieee->active_channel_map[ieee->current_network.channel] == 1) |
| rtllib_send_probe_requests(ieee, 0); |
| |
| schedule_delayed_work(&ieee->softmac_scan_wq, |
| msecs_to_jiffies(RTLLIB_SOFTMAC_SCAN_TIME)); |
| |
| mutex_unlock(&ieee->scan_mutex); |
| return; |
| |
| out: |
| if (IS_DOT11D_ENABLE(ieee)) |
| DOT11D_ScanComplete(ieee); |
| ieee->current_network.channel = last_channel; |
| |
| out1: |
| ieee->actscanning = false; |
| ieee->scan_watch_dog = 0; |
| ieee->scanning_continue = 0; |
| mutex_unlock(&ieee->scan_mutex); |
| } |
| |
| |
| |
| static void rtllib_beacons_start(struct rtllib_device *ieee) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&ieee->beacon_lock, flags); |
| |
| ieee->beacon_txing = 1; |
| rtllib_send_beacon(ieee); |
| |
| spin_unlock_irqrestore(&ieee->beacon_lock, flags); |
| } |
| |
| static void rtllib_beacons_stop(struct rtllib_device *ieee) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&ieee->beacon_lock, flags); |
| |
| ieee->beacon_txing = 0; |
| del_timer_sync(&ieee->beacon_timer); |
| |
| spin_unlock_irqrestore(&ieee->beacon_lock, flags); |
| |
| } |
| |
| |
| void rtllib_stop_send_beacons(struct rtllib_device *ieee) |
| { |
| if (ieee->stop_send_beacons) |
| ieee->stop_send_beacons(ieee->dev); |
| if (ieee->softmac_features & IEEE_SOFTMAC_BEACONS) |
| rtllib_beacons_stop(ieee); |
| } |
| EXPORT_SYMBOL(rtllib_stop_send_beacons); |
| |
| |
| void rtllib_start_send_beacons(struct rtllib_device *ieee) |
| { |
| if (ieee->start_send_beacons) |
| ieee->start_send_beacons(ieee->dev); |
| if (ieee->softmac_features & IEEE_SOFTMAC_BEACONS) |
| rtllib_beacons_start(ieee); |
| } |
| EXPORT_SYMBOL(rtllib_start_send_beacons); |
| |
| |
| static void rtllib_softmac_stop_scan(struct rtllib_device *ieee) |
| { |
| mutex_lock(&ieee->scan_mutex); |
| ieee->scan_watch_dog = 0; |
| if (ieee->scanning_continue == 1) { |
| ieee->scanning_continue = 0; |
| ieee->actscanning = false; |
| |
| cancel_delayed_work_sync(&ieee->softmac_scan_wq); |
| } |
| |
| mutex_unlock(&ieee->scan_mutex); |
| } |
| |
| void rtllib_stop_scan(struct rtllib_device *ieee) |
| { |
| if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) { |
| rtllib_softmac_stop_scan(ieee); |
| } else { |
| if (ieee->rtllib_stop_hw_scan) |
| ieee->rtllib_stop_hw_scan(ieee->dev); |
| } |
| } |
| EXPORT_SYMBOL(rtllib_stop_scan); |
| |
| void rtllib_stop_scan_syncro(struct rtllib_device *ieee) |
| { |
| if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) { |
| ieee->sync_scan_hurryup = 1; |
| } else { |
| if (ieee->rtllib_stop_hw_scan) |
| ieee->rtllib_stop_hw_scan(ieee->dev); |
| } |
| } |
| EXPORT_SYMBOL(rtllib_stop_scan_syncro); |
| |
| bool rtllib_act_scanning(struct rtllib_device *ieee, bool sync_scan) |
| { |
| if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) { |
| if (sync_scan) |
| return ieee->be_scan_inprogress; |
| else |
| return ieee->actscanning || ieee->be_scan_inprogress; |
| } else { |
| return test_bit(STATUS_SCANNING, &ieee->status); |
| } |
| } |
| EXPORT_SYMBOL(rtllib_act_scanning); |
| |
| /* called with ieee->lock held */ |
| static void rtllib_start_scan(struct rtllib_device *ieee) |
| { |
| RT_TRACE(COMP_DBG, "===>%s()\n", __func__); |
| if (ieee->rtllib_ips_leave_wq != NULL) |
| ieee->rtllib_ips_leave_wq(ieee->dev); |
| |
| if (IS_DOT11D_ENABLE(ieee)) { |
| if (IS_COUNTRY_IE_VALID(ieee)) |
| RESET_CIE_WATCHDOG(ieee); |
| } |
| if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) { |
| if (ieee->scanning_continue == 0) { |
| ieee->actscanning = true; |
| ieee->scanning_continue = 1; |
| schedule_delayed_work(&ieee->softmac_scan_wq, 0); |
| } |
| } else { |
| if (ieee->rtllib_start_hw_scan) |
| ieee->rtllib_start_hw_scan(ieee->dev); |
| } |
| } |
| |
| /* called with wx_mutex held */ |
| void rtllib_start_scan_syncro(struct rtllib_device *ieee, u8 is_mesh) |
| { |
| if (IS_DOT11D_ENABLE(ieee)) { |
| if (IS_COUNTRY_IE_VALID(ieee)) |
| RESET_CIE_WATCHDOG(ieee); |
| } |
| ieee->sync_scan_hurryup = 0; |
| if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) { |
| rtllib_softmac_scan_syncro(ieee, is_mesh); |
| } else { |
| if (ieee->rtllib_start_hw_scan) |
| ieee->rtllib_start_hw_scan(ieee->dev); |
| } |
| } |
| EXPORT_SYMBOL(rtllib_start_scan_syncro); |
| |
| static inline struct sk_buff * |
| rtllib_authentication_req(struct rtllib_network *beacon, |
| struct rtllib_device *ieee, |
| int challengelen, u8 *daddr) |
| { |
| struct sk_buff *skb; |
| struct rtllib_authentication *auth; |
| int len; |
| |
| len = sizeof(struct rtllib_authentication) + challengelen + |
| ieee->tx_headroom + 4; |
| skb = dev_alloc_skb(len); |
| |
| if (!skb) |
| return NULL; |
| |
| skb_reserve(skb, ieee->tx_headroom); |
| |
| auth = skb_put(skb, sizeof(struct rtllib_authentication)); |
| |
| auth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_AUTH); |
| if (challengelen) |
| auth->header.frame_ctl |= cpu_to_le16(RTLLIB_FCTL_WEP); |
| |
| auth->header.duration_id = cpu_to_le16(0x013a); |
| ether_addr_copy(auth->header.addr1, beacon->bssid); |
| ether_addr_copy(auth->header.addr2, ieee->dev->dev_addr); |
| ether_addr_copy(auth->header.addr3, beacon->bssid); |
| if (ieee->auth_mode == 0) |
| auth->algorithm = WLAN_AUTH_OPEN; |
| else if (ieee->auth_mode == 1) |
| auth->algorithm = cpu_to_le16(WLAN_AUTH_SHARED_KEY); |
| else if (ieee->auth_mode == 2) |
| auth->algorithm = WLAN_AUTH_OPEN; |
| auth->transaction = cpu_to_le16(ieee->associate_seq); |
| ieee->associate_seq++; |
| |
| auth->status = cpu_to_le16(WLAN_STATUS_SUCCESS); |
| |
| return skb; |
| } |
| |
| static struct sk_buff *rtllib_probe_resp(struct rtllib_device *ieee, |
| const u8 *dest) |
| { |
| u8 *tag; |
| int beacon_size; |
| struct rtllib_probe_response *beacon_buf; |
| struct sk_buff *skb = NULL; |
| int encrypt; |
| int atim_len, erp_len; |
| struct lib80211_crypt_data *crypt; |
| |
| char *ssid = ieee->current_network.ssid; |
| int ssid_len = ieee->current_network.ssid_len; |
| int rate_len = ieee->current_network.rates_len+2; |
| int rate_ex_len = ieee->current_network.rates_ex_len; |
| int wpa_ie_len = ieee->wpa_ie_len; |
| u8 erpinfo_content = 0; |
| |
| u8 *tmp_ht_cap_buf = NULL; |
| u8 tmp_ht_cap_len = 0; |
| u8 *tmp_ht_info_buf = NULL; |
| u8 tmp_ht_info_len = 0; |
| struct rt_hi_throughput *pHTInfo = ieee->pHTInfo; |
| u8 *tmp_generic_ie_buf = NULL; |
| u8 tmp_generic_ie_len = 0; |
| |
| if (rate_ex_len > 0) |
| rate_ex_len += 2; |
| |
| if (ieee->current_network.capability & WLAN_CAPABILITY_IBSS) |
| atim_len = 4; |
| else |
| atim_len = 0; |
| |
| if ((ieee->current_network.mode == IEEE_G) || |
| (ieee->current_network.mode == IEEE_N_24G && |
| ieee->pHTInfo->bCurSuppCCK)) { |
| erp_len = 3; |
| erpinfo_content = 0; |
| if (ieee->current_network.buseprotection) |
| erpinfo_content |= ERP_UseProtection; |
| } else |
| erp_len = 0; |
| |
| crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx]; |
| encrypt = ieee->host_encrypt && crypt && crypt->ops && |
| ((strcmp(crypt->ops->name, "R-WEP") == 0 || wpa_ie_len)); |
| if (ieee->pHTInfo->bCurrentHTSupport) { |
| tmp_ht_cap_buf = (u8 *) &(ieee->pHTInfo->SelfHTCap); |
| tmp_ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap); |
| tmp_ht_info_buf = (u8 *) &(ieee->pHTInfo->SelfHTInfo); |
| tmp_ht_info_len = sizeof(ieee->pHTInfo->SelfHTInfo); |
| HTConstructCapabilityElement(ieee, tmp_ht_cap_buf, |
| &tmp_ht_cap_len, encrypt, false); |
| HTConstructInfoElement(ieee, tmp_ht_info_buf, &tmp_ht_info_len, |
| encrypt); |
| |
| if (pHTInfo->bRegRT2RTAggregation) { |
| tmp_generic_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer; |
| tmp_generic_ie_len = |
| sizeof(ieee->pHTInfo->szRT2RTAggBuffer); |
| HTConstructRT2RTAggElement(ieee, tmp_generic_ie_buf, |
| &tmp_generic_ie_len); |
| } |
| } |
| |
| beacon_size = sizeof(struct rtllib_probe_response)+2+ |
| ssid_len + 3 + rate_len + rate_ex_len + atim_len + erp_len |
| + wpa_ie_len + ieee->tx_headroom; |
| skb = dev_alloc_skb(beacon_size); |
| if (!skb) |
| return NULL; |
| |
| skb_reserve(skb, ieee->tx_headroom); |
| |
| beacon_buf = skb_put(skb, (beacon_size - ieee->tx_headroom)); |
| ether_addr_copy(beacon_buf->header.addr1, dest); |
| ether_addr_copy(beacon_buf->header.addr2, ieee->dev->dev_addr); |
| ether_addr_copy(beacon_buf->header.addr3, ieee->current_network.bssid); |
| |
| beacon_buf->header.duration_id = 0; |
| beacon_buf->beacon_interval = |
| cpu_to_le16(ieee->current_network.beacon_interval); |
| beacon_buf->capability = |
| cpu_to_le16(ieee->current_network.capability & |
| WLAN_CAPABILITY_IBSS); |
| beacon_buf->capability |= |
| cpu_to_le16(ieee->current_network.capability & |
| WLAN_CAPABILITY_SHORT_PREAMBLE); |
| |
| if (ieee->short_slot && (ieee->current_network.capability & |
| WLAN_CAPABILITY_SHORT_SLOT_TIME)) |
| beacon_buf->capability |= |
| cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME); |
| |
| crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx]; |
| if (encrypt) |
| beacon_buf->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY); |
| |
| |
| beacon_buf->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_PROBE_RESP); |
| beacon_buf->info_element[0].id = MFIE_TYPE_SSID; |
| beacon_buf->info_element[0].len = ssid_len; |
| |
| tag = (u8 *) beacon_buf->info_element[0].data; |
| |
| memcpy(tag, ssid, ssid_len); |
| |
| tag += ssid_len; |
| |
| *(tag++) = MFIE_TYPE_RATES; |
| *(tag++) = rate_len-2; |
| memcpy(tag, ieee->current_network.rates, rate_len-2); |
| tag += rate_len-2; |
| |
| *(tag++) = MFIE_TYPE_DS_SET; |
| *(tag++) = 1; |
| *(tag++) = ieee->current_network.channel; |
| |
| if (atim_len) { |
| u16 val16; |
| *(tag++) = MFIE_TYPE_IBSS_SET; |
| *(tag++) = 2; |
| val16 = ieee->current_network.atim_window; |
| memcpy((u8 *)tag, (u8 *)&val16, 2); |
| tag += 2; |
| } |
| |
| if (erp_len) { |
| *(tag++) = MFIE_TYPE_ERP; |
| *(tag++) = 1; |
| *(tag++) = erpinfo_content; |
| } |
| if (rate_ex_len) { |
| *(tag++) = MFIE_TYPE_RATES_EX; |
| *(tag++) = rate_ex_len-2; |
| memcpy(tag, ieee->current_network.rates_ex, rate_ex_len-2); |
| tag += rate_ex_len-2; |
| } |
| |
| if (wpa_ie_len) { |
| if (ieee->iw_mode == IW_MODE_ADHOC) |
| memcpy(&ieee->wpa_ie[14], &ieee->wpa_ie[8], 4); |
| memcpy(tag, ieee->wpa_ie, ieee->wpa_ie_len); |
| tag += ieee->wpa_ie_len; |
| } |
| return skb; |
| } |
| |
| static struct sk_buff *rtllib_assoc_resp(struct rtllib_device *ieee, u8 *dest) |
| { |
| struct sk_buff *skb; |
| u8 *tag; |
| |
| struct lib80211_crypt_data *crypt; |
| struct rtllib_assoc_response_frame *assoc; |
| short encrypt; |
| |
| unsigned int rate_len = rtllib_MFIE_rate_len(ieee); |
| int len = sizeof(struct rtllib_assoc_response_frame) + rate_len + |
| ieee->tx_headroom; |
| |
| skb = dev_alloc_skb(len); |
| |
| if (!skb) |
| return NULL; |
| |
| skb_reserve(skb, ieee->tx_headroom); |
| |
| assoc = skb_put(skb, sizeof(struct rtllib_assoc_response_frame)); |
| |
| assoc->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_ASSOC_RESP); |
| ether_addr_copy(assoc->header.addr1, dest); |
| ether_addr_copy(assoc->header.addr3, ieee->dev->dev_addr); |
| ether_addr_copy(assoc->header.addr2, ieee->dev->dev_addr); |
| assoc->capability = cpu_to_le16(ieee->iw_mode == IW_MODE_MASTER ? |
| WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS); |
| |
| |
| if (ieee->short_slot) |
| assoc->capability |= |
| cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME); |
| |
| if (ieee->host_encrypt) |
| crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx]; |
| else |
| crypt = NULL; |
| |
| encrypt = (crypt && crypt->ops); |
| |
| if (encrypt) |
| assoc->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY); |
| |
| assoc->status = 0; |
| assoc->aid = cpu_to_le16(ieee->assoc_id); |
| if (ieee->assoc_id == 0x2007) |
| ieee->assoc_id = 0; |
| else |
| ieee->assoc_id++; |
| |
| tag = skb_put(skb, rate_len); |
| rtllib_MFIE_Brate(ieee, &tag); |
| rtllib_MFIE_Grate(ieee, &tag); |
| |
| return skb; |
| } |
| |
| static struct sk_buff *rtllib_auth_resp(struct rtllib_device *ieee, int status, |
| u8 *dest) |
| { |
| struct sk_buff *skb = NULL; |
| struct rtllib_authentication *auth; |
| int len = ieee->tx_headroom + sizeof(struct rtllib_authentication) + 1; |
| |
| skb = dev_alloc_skb(len); |
| if (!skb) |
| return NULL; |
| |
| skb->len = sizeof(struct rtllib_authentication); |
| |
| skb_reserve(skb, ieee->tx_headroom); |
| |
| auth = skb_put(skb, sizeof(struct rtllib_authentication)); |
| |
| auth->status = cpu_to_le16(status); |
| auth->transaction = cpu_to_le16(2); |
| auth->algorithm = cpu_to_le16(WLAN_AUTH_OPEN); |
| |
| ether_addr_copy(auth->header.addr3, ieee->dev->dev_addr); |
| ether_addr_copy(auth->header.addr2, ieee->dev->dev_addr); |
| ether_addr_copy(auth->header.addr1, dest); |
| auth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_AUTH); |
| return skb; |
| |
| |
| } |
| |
| static struct sk_buff *rtllib_null_func(struct rtllib_device *ieee, short pwr) |
| { |
| struct sk_buff *skb; |
| struct rtllib_hdr_3addr *hdr; |
| |
| skb = dev_alloc_skb(sizeof(struct rtllib_hdr_3addr)+ieee->tx_headroom); |
| if (!skb) |
| return NULL; |
| |
| skb_reserve(skb, ieee->tx_headroom); |
| |
| hdr = skb_put(skb, sizeof(struct rtllib_hdr_3addr)); |
| |
| ether_addr_copy(hdr->addr1, ieee->current_network.bssid); |
| ether_addr_copy(hdr->addr2, ieee->dev->dev_addr); |
| ether_addr_copy(hdr->addr3, ieee->current_network.bssid); |
| |
| hdr->frame_ctl = cpu_to_le16(RTLLIB_FTYPE_DATA | |
| RTLLIB_STYPE_NULLFUNC | RTLLIB_FCTL_TODS | |
| (pwr ? RTLLIB_FCTL_PM : 0)); |
| |
| return skb; |
| |
| |
| } |
| |
| static struct sk_buff *rtllib_pspoll_func(struct rtllib_device *ieee) |
| { |
| struct sk_buff *skb; |
| struct rtllib_pspoll_hdr *hdr; |
| |
| skb = dev_alloc_skb(sizeof(struct rtllib_pspoll_hdr)+ieee->tx_headroom); |
| if (!skb) |
| return NULL; |
| |
| skb_reserve(skb, ieee->tx_headroom); |
| |
| hdr = skb_put(skb, sizeof(struct rtllib_pspoll_hdr)); |
| |
| ether_addr_copy(hdr->bssid, ieee->current_network.bssid); |
| ether_addr_copy(hdr->ta, ieee->dev->dev_addr); |
| |
| hdr->aid = cpu_to_le16(ieee->assoc_id | 0xc000); |
| hdr->frame_ctl = cpu_to_le16(RTLLIB_FTYPE_CTL | RTLLIB_STYPE_PSPOLL | |
| RTLLIB_FCTL_PM); |
| |
| return skb; |
| |
| } |
| |
| static void rtllib_resp_to_assoc_rq(struct rtllib_device *ieee, u8 *dest) |
| { |
| struct sk_buff *buf = rtllib_assoc_resp(ieee, dest); |
| |
| if (buf) |
| softmac_mgmt_xmit(buf, ieee); |
| } |
| |
| |
| static void rtllib_resp_to_auth(struct rtllib_device *ieee, int s, u8 *dest) |
| { |
| struct sk_buff *buf = rtllib_auth_resp(ieee, s, dest); |
| |
| if (buf) |
| softmac_mgmt_xmit(buf, ieee); |
| } |
| |
| |
| static void rtllib_resp_to_probe(struct rtllib_device *ieee, u8 *dest) |
| { |
| struct sk_buff *buf = rtllib_probe_resp(ieee, dest); |
| |
| if (buf) |
| softmac_mgmt_xmit(buf, ieee); |
| } |
| |
| |
| static inline int SecIsInPMKIDList(struct rtllib_device *ieee, u8 *bssid) |
| { |
| int i = 0; |
| |
| do { |
| if ((ieee->PMKIDList[i].bUsed) && |
| (memcmp(ieee->PMKIDList[i].Bssid, bssid, ETH_ALEN) == 0)) |
| break; |
| i++; |
| } while (i < NUM_PMKID_CACHE); |
| |
| if (i == NUM_PMKID_CACHE) |
| i = -1; |
| return i; |
| } |
| |
| static inline struct sk_buff * |
| rtllib_association_req(struct rtllib_network *beacon, |
| struct rtllib_device *ieee) |
| { |
| struct sk_buff *skb; |
| struct rtllib_assoc_request_frame *hdr; |
| u8 *tag, *ies; |
| int i; |
| u8 *ht_cap_buf = NULL; |
| u8 ht_cap_len = 0; |
| u8 *realtek_ie_buf = NULL; |
| u8 realtek_ie_len = 0; |
| int wpa_ie_len = ieee->wpa_ie_len; |
| int wps_ie_len = ieee->wps_ie_len; |
| unsigned int ckip_ie_len = 0; |
| unsigned int ccxrm_ie_len = 0; |
| unsigned int cxvernum_ie_len = 0; |
| struct lib80211_crypt_data *crypt; |
| int encrypt; |
| int PMKCacheIdx; |
| |
| unsigned int rate_len = (beacon->rates_len ? |
| (beacon->rates_len + 2) : 0) + |
| (beacon->rates_ex_len ? (beacon->rates_ex_len) + |
| 2 : 0); |
| |
| unsigned int wmm_info_len = beacon->qos_data.supported ? 9 : 0; |
| unsigned int turbo_info_len = beacon->Turbo_Enable ? 9 : 0; |
| |
| int len = 0; |
| |
| crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx]; |
| if (crypt != NULL) |
| encrypt = ieee->host_encrypt && crypt && crypt->ops && |
| ((strcmp(crypt->ops->name, "R-WEP") == 0 || |
| wpa_ie_len)); |
| else |
| encrypt = 0; |
| |
| if ((ieee->rtllib_ap_sec_type && |
| (ieee->rtllib_ap_sec_type(ieee) & SEC_ALG_TKIP)) || |
| ieee->bForcedBgMode) { |
| ieee->pHTInfo->bEnableHT = 0; |
| ieee->mode = WIRELESS_MODE_G; |
| } |
| |
| if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) { |
| ht_cap_buf = (u8 *)&(ieee->pHTInfo->SelfHTCap); |
| ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap); |
| HTConstructCapabilityElement(ieee, ht_cap_buf, &ht_cap_len, |
| encrypt, true); |
| if (ieee->pHTInfo->bCurrentRT2RTAggregation) { |
| realtek_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer; |
| realtek_ie_len = |
| sizeof(ieee->pHTInfo->szRT2RTAggBuffer); |
| HTConstructRT2RTAggElement(ieee, realtek_ie_buf, |
| &realtek_ie_len); |
| } |
| } |
| |
| if (beacon->bCkipSupported) |
| ckip_ie_len = 30+2; |
| if (beacon->bCcxRmEnable) |
| ccxrm_ie_len = 6+2; |
| if (beacon->BssCcxVerNumber >= 2) |
| cxvernum_ie_len = 5+2; |
| |
| PMKCacheIdx = SecIsInPMKIDList(ieee, ieee->current_network.bssid); |
| if (PMKCacheIdx >= 0) { |
| wpa_ie_len += 18; |
| netdev_info(ieee->dev, "[PMK cache]: WPA2 IE length: %x\n", |
| wpa_ie_len); |
| } |
| len = sizeof(struct rtllib_assoc_request_frame) + 2 |
| + beacon->ssid_len |
| + rate_len |
| + wpa_ie_len |
| + wps_ie_len |
| + wmm_info_len |
| + turbo_info_len |
| + ht_cap_len |
| + realtek_ie_len |
| + ckip_ie_len |
| + ccxrm_ie_len |
| + cxvernum_ie_len |
| + ieee->tx_headroom; |
| |
| skb = dev_alloc_skb(len); |
| |
| if (!skb) |
| return NULL; |
| |
| skb_reserve(skb, ieee->tx_headroom); |
| |
| hdr = skb_put(skb, sizeof(struct rtllib_assoc_request_frame) + 2); |
| |
| |
| hdr->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_ASSOC_REQ); |
| hdr->header.duration_id = cpu_to_le16(37); |
| ether_addr_copy(hdr->header.addr1, beacon->bssid); |
| ether_addr_copy(hdr->header.addr2, ieee->dev->dev_addr); |
| ether_addr_copy(hdr->header.addr3, beacon->bssid); |
| |
| ether_addr_copy(ieee->ap_mac_addr, beacon->bssid); |
| |
| hdr->capability = cpu_to_le16(WLAN_CAPABILITY_ESS); |
| if (beacon->capability & WLAN_CAPABILITY_PRIVACY) |
| hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY); |
| |
| if (beacon->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) |
| hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE); |
| |
| if (ieee->short_slot && |
| (beacon->capability&WLAN_CAPABILITY_SHORT_SLOT_TIME)) |
| hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME); |
| |
| |
| hdr->listen_interval = cpu_to_le16(beacon->listen_interval); |
| |
| hdr->info_element[0].id = MFIE_TYPE_SSID; |
| |
| hdr->info_element[0].len = beacon->ssid_len; |
| skb_put_data(skb, beacon->ssid, beacon->ssid_len); |
| |
| tag = skb_put(skb, rate_len); |
| |
| if (beacon->rates_len) { |
| *tag++ = MFIE_TYPE_RATES; |
| *tag++ = beacon->rates_len; |
| for (i = 0; i < beacon->rates_len; i++) |
| *tag++ = beacon->rates[i]; |
| } |
| |
| if (beacon->rates_ex_len) { |
| *tag++ = MFIE_TYPE_RATES_EX; |
| *tag++ = beacon->rates_ex_len; |
| for (i = 0; i < beacon->rates_ex_len; i++) |
| *tag++ = beacon->rates_ex[i]; |
| } |
| |
| if (beacon->bCkipSupported) { |
| static const u8 AironetIeOui[] = {0x00, 0x01, 0x66}; |
| u8 CcxAironetBuf[30]; |
| struct octet_string osCcxAironetIE; |
| |
| memset(CcxAironetBuf, 0, 30); |
| osCcxAironetIE.Octet = CcxAironetBuf; |
| osCcxAironetIE.Length = sizeof(CcxAironetBuf); |
| memcpy(osCcxAironetIE.Octet, AironetIeOui, |
| sizeof(AironetIeOui)); |
| |
| osCcxAironetIE.Octet[IE_CISCO_FLAG_POSITION] |= |
| (SUPPORT_CKIP_PK|SUPPORT_CKIP_MIC); |
| tag = skb_put(skb, ckip_ie_len); |
| *tag++ = MFIE_TYPE_AIRONET; |
| *tag++ = osCcxAironetIE.Length; |
| memcpy(tag, osCcxAironetIE.Octet, osCcxAironetIE.Length); |
| tag += osCcxAironetIE.Length; |
| } |
| |
| if (beacon->bCcxRmEnable) { |
| static const u8 CcxRmCapBuf[] = {0x00, 0x40, 0x96, 0x01, 0x01, |
| 0x00}; |
| struct octet_string osCcxRmCap; |
| |
| osCcxRmCap.Octet = (u8 *) CcxRmCapBuf; |
| osCcxRmCap.Length = sizeof(CcxRmCapBuf); |
| tag = skb_put(skb, ccxrm_ie_len); |
| *tag++ = MFIE_TYPE_GENERIC; |
| *tag++ = osCcxRmCap.Length; |
| memcpy(tag, osCcxRmCap.Octet, osCcxRmCap.Length); |
| tag += osCcxRmCap.Length; |
| } |
| |
| if (beacon->BssCcxVerNumber >= 2) { |
| u8 CcxVerNumBuf[] = {0x00, 0x40, 0x96, 0x03, 0x00}; |
| struct octet_string osCcxVerNum; |
| |
| CcxVerNumBuf[4] = beacon->BssCcxVerNumber; |
| osCcxVerNum.Octet = CcxVerNumBuf; |
| osCcxVerNum.Length = sizeof(CcxVerNumBuf); |
| tag = skb_put(skb, cxvernum_ie_len); |
| *tag++ = MFIE_TYPE_GENERIC; |
| *tag++ = osCcxVerNum.Length; |
| memcpy(tag, osCcxVerNum.Octet, osCcxVerNum.Length); |
| tag += osCcxVerNum.Length; |
| } |
| if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) { |
| if (ieee->pHTInfo->ePeerHTSpecVer != HT_SPEC_VER_EWC) { |
| tag = skb_put(skb, ht_cap_len); |
| *tag++ = MFIE_TYPE_HT_CAP; |
| *tag++ = ht_cap_len - 2; |
| memcpy(tag, ht_cap_buf, ht_cap_len - 2); |
| tag += ht_cap_len - 2; |
| } |
| } |
| |
| if (wpa_ie_len) { |
| skb_put_data(skb, ieee->wpa_ie, ieee->wpa_ie_len); |
| |
| if (PMKCacheIdx >= 0) { |
| tag = skb_put(skb, 18); |
| *tag = 1; |
| *(tag + 1) = 0; |
| memcpy((tag + 2), &ieee->PMKIDList[PMKCacheIdx].PMKID, |
| 16); |
| } |
| } |
| if (wmm_info_len) { |
| tag = skb_put(skb, wmm_info_len); |
| rtllib_WMM_Info(ieee, &tag); |
| } |
| |
| if (wps_ie_len && ieee->wps_ie) { |
| skb_put_data(skb, ieee->wps_ie, wps_ie_len); |
| } |
| |
| if (turbo_info_len) { |
| tag = skb_put(skb, turbo_info_len); |
| rtllib_TURBO_Info(ieee, &tag); |
| } |
| |
| if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) { |
| if (ieee->pHTInfo->ePeerHTSpecVer == HT_SPEC_VER_EWC) { |
| tag = skb_put(skb, ht_cap_len); |
| *tag++ = MFIE_TYPE_GENERIC; |
| *tag++ = ht_cap_len - 2; |
| memcpy(tag, ht_cap_buf, ht_cap_len - 2); |
| tag += ht_cap_len - 2; |
| } |
| |
| if (ieee->pHTInfo->bCurrentRT2RTAggregation) { |
| tag = skb_put(skb, realtek_ie_len); |
| *tag++ = MFIE_TYPE_GENERIC; |
| *tag++ = realtek_ie_len - 2; |
| memcpy(tag, realtek_ie_buf, realtek_ie_len - 2); |
| } |
| } |
| |
| kfree(ieee->assocreq_ies); |
| ieee->assocreq_ies = NULL; |
| ies = &(hdr->info_element[0].id); |
| ieee->assocreq_ies_len = (skb->data + skb->len) - ies; |
| ieee->assocreq_ies = kmalloc(ieee->assocreq_ies_len, GFP_ATOMIC); |
| if (ieee->assocreq_ies) |
| memcpy(ieee->assocreq_ies, ies, ieee->assocreq_ies_len); |
| else { |
| netdev_info(ieee->dev, |
| "%s()Warning: can't alloc memory for assocreq_ies\n", |
| __func__); |
| ieee->assocreq_ies_len = 0; |
| } |
| return skb; |
| } |
| |
| static void rtllib_associate_abort(struct rtllib_device *ieee) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&ieee->lock, flags); |
| |
| ieee->associate_seq++; |
| |
| /* don't scan, and avoid to have the RX path possibily |
| * try again to associate. Even do not react to AUTH or |
| * ASSOC response. Just wait for the retry wq to be scheduled. |
| * Here we will check if there are good nets to associate |
| * with, so we retry or just get back to NO_LINK and scanning |
| */ |
| if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING) { |
| netdev_dbg(ieee->dev, "Authentication failed\n"); |
| ieee->softmac_stats.no_auth_rs++; |
| } else { |
| netdev_dbg(ieee->dev, "Association failed\n"); |
| ieee->softmac_stats.no_ass_rs++; |
| } |
| |
| ieee->state = RTLLIB_ASSOCIATING_RETRY; |
| |
| schedule_delayed_work(&ieee->associate_retry_wq, |
| RTLLIB_SOFTMAC_ASSOC_RETRY_TIME); |
| |
| spin_unlock_irqrestore(&ieee->lock, flags); |
| } |
| |
| static void rtllib_associate_abort_cb(unsigned long dev) |
| { |
| rtllib_associate_abort((struct rtllib_device *) dev); |
| } |
| |
| static void rtllib_associate_step1(struct rtllib_device *ieee, u8 *daddr) |
| { |
| struct rtllib_network *beacon = &ieee->current_network; |
| struct sk_buff *skb; |
| |
| netdev_dbg(ieee->dev, "Stopping scan\n"); |
| |
| ieee->softmac_stats.tx_auth_rq++; |
| |
| skb = rtllib_authentication_req(beacon, ieee, 0, daddr); |
| |
| if (!skb) |
| rtllib_associate_abort(ieee); |
| else { |
| ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATING; |
| netdev_dbg(ieee->dev, "Sending authentication request\n"); |
| softmac_mgmt_xmit(skb, ieee); |
| if (!timer_pending(&ieee->associate_timer)) { |
| ieee->associate_timer.expires = jiffies + (HZ / 2); |
| add_timer(&ieee->associate_timer); |
| } |
| } |
| } |
| |
| static void rtllib_auth_challenge(struct rtllib_device *ieee, u8 *challenge, |
| int chlen) |
| { |
| u8 *c; |
| struct sk_buff *skb; |
| struct rtllib_network *beacon = &ieee->current_network; |
| |
| ieee->associate_seq++; |
| ieee->softmac_stats.tx_auth_rq++; |
| |
| skb = rtllib_authentication_req(beacon, ieee, chlen + 2, beacon->bssid); |
| |
| if (!skb) |
| rtllib_associate_abort(ieee); |
| else { |
| c = skb_put(skb, chlen+2); |
| *(c++) = MFIE_TYPE_CHALLENGE; |
| *(c++) = chlen; |
| memcpy(c, challenge, chlen); |
| |
| netdev_dbg(ieee->dev, |
| "Sending authentication challenge response\n"); |
| |
| rtllib_encrypt_fragment(ieee, skb, |
| sizeof(struct rtllib_hdr_3addr)); |
| |
| softmac_mgmt_xmit(skb, ieee); |
| mod_timer(&ieee->associate_timer, jiffies + (HZ/2)); |
| } |
| kfree(challenge); |
| } |
| |
| static void rtllib_associate_step2(struct rtllib_device *ieee) |
| { |
| struct sk_buff *skb; |
| struct rtllib_network *beacon = &ieee->current_network; |
| |
| del_timer_sync(&ieee->associate_timer); |
| |
| netdev_dbg(ieee->dev, "Sending association request\n"); |
| |
| ieee->softmac_stats.tx_ass_rq++; |
| skb = rtllib_association_req(beacon, ieee); |
| if (!skb) |
| rtllib_associate_abort(ieee); |
| else { |
| softmac_mgmt_xmit(skb, ieee); |
| mod_timer(&ieee->associate_timer, jiffies + (HZ/2)); |
| } |
| } |
| |
| static void rtllib_associate_complete_wq(void *data) |
| { |
| struct rtllib_device *ieee = (struct rtllib_device *) |
| container_of_work_rsl(data, |
| struct rtllib_device, |
| associate_complete_wq); |
| struct rt_pwr_save_ctrl *pPSC = &(ieee->PowerSaveControl); |
| |
| netdev_info(ieee->dev, "Associated successfully with %pM\n", |
| ieee->current_network.bssid); |
| if (!ieee->is_silent_reset) { |
| netdev_info(ieee->dev, "normal associate\n"); |
| notify_wx_assoc_event(ieee); |
| } |
| |
| netif_carrier_on(ieee->dev); |
| ieee->is_roaming = false; |
| if (rtllib_is_54g(&ieee->current_network) && |
| (ieee->modulation & RTLLIB_OFDM_MODULATION)) { |
| ieee->rate = 108; |
| netdev_info(ieee->dev, "Using G rates:%d\n", ieee->rate); |
| } else { |
| ieee->rate = 22; |
| ieee->SetWirelessMode(ieee->dev, IEEE_B); |
| netdev_info(ieee->dev, "Using B rates:%d\n", ieee->rate); |
| } |
| if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) { |
| netdev_info(ieee->dev, "Successfully associated, ht enabled\n"); |
| HTOnAssocRsp(ieee); |
| } else { |
| netdev_info(ieee->dev, |
| "Successfully associated, ht not enabled(%d, %d)\n", |
| ieee->pHTInfo->bCurrentHTSupport, |
| ieee->pHTInfo->bEnableHT); |
| memset(ieee->dot11HTOperationalRateSet, 0, 16); |
| } |
| ieee->LinkDetectInfo.SlotNum = 2 * (1 + |
| ieee->current_network.beacon_interval / |
| 500); |
| if (ieee->LinkDetectInfo.NumRecvBcnInPeriod == 0 || |
| ieee->LinkDetectInfo.NumRecvDataInPeriod == 0) { |
| ieee->LinkDetectInfo.NumRecvBcnInPeriod = 1; |
| ieee->LinkDetectInfo.NumRecvDataInPeriod = 1; |
| } |
| pPSC->LpsIdleCount = 0; |
| ieee->link_change(ieee->dev); |
| |
| if (ieee->is_silent_reset) { |
| netdev_info(ieee->dev, "silent reset associate\n"); |
| ieee->is_silent_reset = false; |
| } |
| |
| if (ieee->data_hard_resume) |
| ieee->data_hard_resume(ieee->dev); |
| |
| } |
| |
| static void rtllib_sta_send_associnfo(struct rtllib_device *ieee) |
| { |
| } |
| |
| static void rtllib_associate_complete(struct rtllib_device *ieee) |
| { |
| del_timer_sync(&ieee->associate_timer); |
| |
| ieee->state = RTLLIB_LINKED; |
| rtllib_sta_send_associnfo(ieee); |
| |
| schedule_work(&ieee->associate_complete_wq); |
| } |
| |
| static void rtllib_associate_procedure_wq(void *data) |
| { |
| struct rtllib_device *ieee = container_of_dwork_rsl(data, |
| struct rtllib_device, |
| associate_procedure_wq); |
| rtllib_stop_scan_syncro(ieee); |
| if (ieee->rtllib_ips_leave != NULL) |
| ieee->rtllib_ips_leave(ieee->dev); |
| mutex_lock(&ieee->wx_mutex); |
| |
| if (ieee->data_hard_stop) |
| ieee->data_hard_stop(ieee->dev); |
| |
| rtllib_stop_scan(ieee); |
| RT_TRACE(COMP_DBG, "===>%s(), chan:%d\n", __func__, |
| ieee->current_network.channel); |
| HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT); |
| if (ieee->eRFPowerState == eRfOff) { |
| RT_TRACE(COMP_DBG, |
| "=============>%s():Rf state is eRfOff, schedule ipsleave wq again,return\n", |
| __func__); |
| if (ieee->rtllib_ips_leave_wq != NULL) |
| ieee->rtllib_ips_leave_wq(ieee->dev); |
| mutex_unlock(&ieee->wx_mutex); |
| return; |
| } |
| ieee->associate_seq = 1; |
| |
| rtllib_associate_step1(ieee, ieee->current_network.bssid); |
| |
| mutex_unlock(&ieee->wx_mutex); |
| } |
| |
| inline void rtllib_softmac_new_net(struct rtllib_device *ieee, |
| struct rtllib_network *net) |
| { |
| u8 tmp_ssid[IW_ESSID_MAX_SIZE + 1]; |
| int tmp_ssid_len = 0; |
| |
| short apset, ssidset, ssidbroad, apmatch, ssidmatch; |
| |
| /* we are interested in new new only if we are not associated |
| * and we are not associating / authenticating |
| */ |
| if (ieee->state != RTLLIB_NOLINK) |
| return; |
| |
| if ((ieee->iw_mode == IW_MODE_INFRA) && !(net->capability & |
| WLAN_CAPABILITY_ESS)) |
| return; |
| |
| if ((ieee->iw_mode == IW_MODE_ADHOC) && !(net->capability & |
| WLAN_CAPABILITY_IBSS)) |
| return; |
| |
| if ((ieee->iw_mode == IW_MODE_ADHOC) && |
| (net->channel > ieee->ibss_maxjoin_chal)) |
| return; |
| if (ieee->iw_mode == IW_MODE_INFRA || ieee->iw_mode == IW_MODE_ADHOC) { |
| /* if the user specified the AP MAC, we need also the essid |
| * This could be obtained by beacons or, if the network does not |
| * broadcast it, it can be put manually. |
| */ |
| apset = ieee->wap_set; |
| ssidset = ieee->ssid_set; |
| ssidbroad = !(net->ssid_len == 0 || net->ssid[0] == '\0'); |
| apmatch = (memcmp(ieee->current_network.bssid, net->bssid, |
| ETH_ALEN) == 0); |
| if (!ssidbroad) { |
| ssidmatch = (ieee->current_network.ssid_len == |
| net->hidden_ssid_len) && |
| (!strncmp(ieee->current_network.ssid, |
| net->hidden_ssid, net->hidden_ssid_len)); |
| if (net->hidden_ssid_len > 0) { |
| strncpy(net->ssid, net->hidden_ssid, |
| net->hidden_ssid_len); |
| net->ssid_len = net->hidden_ssid_len; |
| ssidbroad = 1; |
| } |
| } else |
| ssidmatch = |
| (ieee->current_network.ssid_len == net->ssid_len) && |
| (!strncmp(ieee->current_network.ssid, net->ssid, |
| net->ssid_len)); |
| |
| /* if the user set the AP check if match. |
| * if the network does not broadcast essid we check the |
| * user supplied ANY essid |
| * if the network does broadcast and the user does not set |
| * essid it is OK |
| * if the network does broadcast and the user did set essid |
| * check if essid match |
| * if the ap is not set, check that the user set the bssid |
| * and the network does broadcast and that those two bssid match |
| */ |
| if ((apset && apmatch && |
| ((ssidset && ssidbroad && ssidmatch) || |
| (ssidbroad && !ssidset) || (!ssidbroad && ssidset))) || |
| (!apset && ssidset && ssidbroad && ssidmatch) || |
| (ieee->is_roaming && ssidset && ssidbroad && ssidmatch)) { |
| /* if the essid is hidden replace it with the |
| * essid provided by the user. |
| */ |
| if (!ssidbroad) { |
| strncpy(tmp_ssid, ieee->current_network.ssid, |
| IW_ESSID_MAX_SIZE); |
| tmp_ssid_len = ieee->current_network.ssid_len; |
| } |
| memcpy(&ieee->current_network, net, |
| sizeof(struct rtllib_network)); |
| if (!ssidbroad) { |
| strncpy(ieee->current_network.ssid, tmp_ssid, |
| IW_ESSID_MAX_SIZE); |
| ieee->current_network.ssid_len = tmp_ssid_len; |
| } |
| netdev_info(ieee->dev, |
| "Linking with %s,channel:%d, qos:%d, myHT:%d, networkHT:%d, mode:%x cur_net.flags:0x%x\n", |
| ieee->current_network.ssid, |
| ieee->current_network.channel, |
| ieee->current_network.qos_data.supported, |
| ieee->pHTInfo->bEnableHT, |
| ieee->current_network.bssht.bdSupportHT, |
| ieee->current_network.mode, |
| ieee->current_network.flags); |
| |
| if ((rtllib_act_scanning(ieee, false)) && |
| !(ieee->softmac_features & IEEE_SOFTMAC_SCAN)) |
| rtllib_stop_scan_syncro(ieee); |
| |
| HTResetIOTSetting(ieee->pHTInfo); |
| ieee->wmm_acm = 0; |
| if (ieee->iw_mode == IW_MODE_INFRA) { |
| /* Join the network for the first time */ |
| ieee->AsocRetryCount = 0; |
| if ((ieee->current_network.qos_data.supported == 1) && |
| ieee->current_network.bssht.bdSupportHT) |
| HTResetSelfAndSavePeerSetting(ieee, |
| &(ieee->current_network)); |
| else |
| ieee->pHTInfo->bCurrentHTSupport = |
| false; |
| |
| ieee->state = RTLLIB_ASSOCIATING; |
| if (ieee->LedControlHandler != NULL) |
| ieee->LedControlHandler(ieee->dev, |
| LED_CTL_START_TO_LINK); |
| schedule_delayed_work( |
| &ieee->associate_procedure_wq, 0); |
| } else { |
| if (rtllib_is_54g(&ieee->current_network) && |
| (ieee->modulation & |
| RTLLIB_OFDM_MODULATION)) { |
| ieee->rate = 108; |
| ieee->SetWirelessMode(ieee->dev, |
| IEEE_G); |
| netdev_info(ieee->dev, |
| "Using G rates\n"); |
| } else { |
| ieee->rate = 22; |
| ieee->SetWirelessMode(ieee->dev, |
| IEEE_B); |
| netdev_info(ieee->dev, |
| "Using B rates\n"); |
| } |
| memset(ieee->dot11HTOperationalRateSet, 0, 16); |
| ieee->state = RTLLIB_LINKED; |
| } |
| } |
| } |
| } |
| |
| static void rtllib_softmac_check_all_nets(struct rtllib_device *ieee) |
| { |
| unsigned long flags; |
| struct rtllib_network *target; |
| |
| spin_lock_irqsave(&ieee->lock, flags); |
| |
| list_for_each_entry(target, &ieee->network_list, list) { |
| |
| /* if the state become different that NOLINK means |
| * we had found what we are searching for |
| */ |
| |
| if (ieee->state != RTLLIB_NOLINK) |
| break; |
| |
| if (ieee->scan_age == 0 || time_after(target->last_scanned + |
| ieee->scan_age, jiffies)) |
| rtllib_softmac_new_net(ieee, target); |
| } |
| spin_unlock_irqrestore(&ieee->lock, flags); |
| } |
| |
| static inline u16 auth_parse(struct net_device *dev, struct sk_buff *skb, |
| u8 **challenge, int *chlen) |
| { |
| struct rtllib_authentication *a; |
| u8 *t; |
| |
| if (skb->len < (sizeof(struct rtllib_authentication) - |
| sizeof(struct rtllib_info_element))) { |
| netdev_dbg(dev, "invalid len in auth resp: %d\n", skb->len); |
| return 0xcafe; |
| } |
| *challenge = NULL; |
| a = (struct rtllib_authentication *) skb->data; |
| if (skb->len > (sizeof(struct rtllib_authentication) + 3)) { |
| t = skb->data + sizeof(struct rtllib_authentication); |
| |
| if (*(t++) == MFIE_TYPE_CHALLENGE) { |
| *chlen = *(t++); |
| *challenge = kmemdup(t, *chlen, GFP_ATOMIC); |
| if (!*challenge) |
| return -ENOMEM; |
| } |
| } |
| return le16_to_cpu(a->status); |
| } |
| |
| static int auth_rq_parse(struct net_device *dev, struct sk_buff *skb, u8 *dest) |
| { |
| struct rtllib_authentication *a; |
| |
| if (skb->len < (sizeof(struct rtllib_authentication) - |
| sizeof(struct rtllib_info_element))) { |
| netdev_dbg(dev, "invalid len in auth request: %d\n", skb->len); |
| return -1; |
| } |
| a = (struct rtllib_authentication *) skb->data; |
| |
| ether_addr_copy(dest, a->header.addr2); |
| |
| if (le16_to_cpu(a->algorithm) != WLAN_AUTH_OPEN) |
| return WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG; |
| |
| return WLAN_STATUS_SUCCESS; |
| } |
| |
| static short probe_rq_parse(struct rtllib_device *ieee, struct sk_buff *skb, |
| u8 *src) |
| { |
| u8 *tag; |
| u8 *skbend; |
| u8 *ssid = NULL; |
| u8 ssidlen = 0; |
| struct rtllib_hdr_3addr *header = |
| (struct rtllib_hdr_3addr *) skb->data; |
| bool bssid_match; |
| |
| if (skb->len < sizeof(struct rtllib_hdr_3addr)) |
| return -1; /* corrupted */ |
| |
| bssid_match = |
| (!ether_addr_equal(header->addr3, ieee->current_network.bssid)) && |
| (!is_broadcast_ether_addr(header->addr3)); |
| if (bssid_match) |
| return -1; |
| |
| ether_addr_copy(src, header->addr2); |
| |
| skbend = (u8 *)skb->data + skb->len; |
| |
| tag = skb->data + sizeof(struct rtllib_hdr_3addr); |
| |
| while (tag + 1 < skbend) { |
| if (*tag == 0) { |
| ssid = tag + 2; |
| ssidlen = *(tag + 1); |
| break; |
| } |
| tag++; /* point to the len field */ |
| tag = tag + *(tag); /* point to the last data byte of the tag */ |
| tag++; /* point to the next tag */ |
| } |
| |
| if (ssidlen == 0) |
| return 1; |
| |
| if (!ssid) |
| return 1; /* ssid not found in tagged param */ |
| |
| return !strncmp(ssid, ieee->current_network.ssid, ssidlen); |
| } |
| |
| static int assoc_rq_parse(struct net_device *dev, struct sk_buff *skb, u8 *dest) |
| { |
| struct rtllib_assoc_request_frame *a; |
| |
| if (skb->len < (sizeof(struct rtllib_assoc_request_frame) - |
| sizeof(struct rtllib_info_element))) { |
| netdev_dbg(dev, "invalid len in auth request:%d\n", skb->len); |
| return -1; |
| } |
| |
| a = (struct rtllib_assoc_request_frame *) skb->data; |
| |
| ether_addr_copy(dest, a->header.addr2); |
| |
| return 0; |
| } |
| |
| static inline u16 assoc_parse(struct rtllib_device *ieee, struct sk_buff *skb, |
| int *aid) |
| { |
| struct rtllib_assoc_response_frame *response_head; |
| u16 status_code; |
| |
| if (skb->len < sizeof(struct rtllib_assoc_response_frame)) { |
| netdev_dbg(ieee->dev, "Invalid len in auth resp: %d\n", |
| skb->len); |
| return 0xcafe; |
| } |
| |
| response_head = (struct rtllib_assoc_response_frame *) skb->data; |
| *aid = le16_to_cpu(response_head->aid) & 0x3fff; |
| |
| status_code = le16_to_cpu(response_head->status); |
| if ((status_code == WLAN_STATUS_ASSOC_DENIED_RATES || |
| status_code == WLAN_STATUS_CAPS_UNSUPPORTED) && |
| ((ieee->mode == IEEE_G) && |
| (ieee->current_network.mode == IEEE_N_24G) && |
| (ieee->AsocRetryCount++ < (RT_ASOC_RETRY_LIMIT-1)))) { |
| ieee->pHTInfo->IOTAction |= HT_IOT_ACT_PURE_N_MODE; |
| } else { |
| ieee->AsocRetryCount = 0; |
| } |
| |
| return le16_to_cpu(response_head->status); |
| } |
| |
| void rtllib_rx_probe_rq(struct rtllib_device *ieee, struct sk_buff *skb) |
| { |
| u8 dest[ETH_ALEN]; |
| |
| ieee->softmac_stats.rx_probe_rq++; |
| if (probe_rq_parse(ieee, skb, dest) > 0) { |
| ieee->softmac_stats.tx_probe_rs++; |
| rtllib_resp_to_probe(ieee, dest); |
| } |
| } |
| |
| static inline void rtllib_rx_auth_rq(struct rtllib_device *ieee, |
| struct sk_buff *skb) |
| { |
| u8 dest[ETH_ALEN]; |
| int status; |
| |
| ieee->softmac_stats.rx_auth_rq++; |
| |
| status = auth_rq_parse(ieee->dev, skb, dest); |
| if (status != -1) |
| rtllib_resp_to_auth(ieee, status, dest); |
| } |
| |
| static inline void rtllib_rx_assoc_rq(struct rtllib_device *ieee, |
| struct sk_buff *skb) |
| { |
| u8 dest[ETH_ALEN]; |
| |
| |
| ieee->softmac_stats.rx_ass_rq++; |
| if (assoc_rq_parse(ieee->dev, skb, dest) != -1) |
| rtllib_resp_to_assoc_rq(ieee, dest); |
| |
| netdev_info(ieee->dev, "New client associated: %pM\n", dest); |
| } |
| |
| void rtllib_sta_ps_send_null_frame(struct rtllib_device *ieee, short pwr) |
| { |
| |
| struct sk_buff *buf = rtllib_null_func(ieee, pwr); |
| |
| if (buf) |
| softmac_ps_mgmt_xmit(buf, ieee); |
| } |
| EXPORT_SYMBOL(rtllib_sta_ps_send_null_frame); |
| |
| void rtllib_sta_ps_send_pspoll_frame(struct rtllib_device *ieee) |
| { |
| struct sk_buff *buf = rtllib_pspoll_func(ieee); |
| |
| if (buf) |
| softmac_ps_mgmt_xmit(buf, ieee); |
| } |
| |
| static short rtllib_sta_ps_sleep(struct rtllib_device *ieee, u64 *time) |
| { |
| int timeout = ieee->ps_timeout; |
| u8 dtim; |
| struct rt_pwr_save_ctrl *pPSC = &(ieee->PowerSaveControl); |
| |
| if (ieee->LPSDelayCnt) { |
| ieee->LPSDelayCnt--; |
| return 0; |
| } |
| |
| dtim = ieee->current_network.dtim_data; |
| if (!(dtim & RTLLIB_DTIM_VALID)) |
| return 0; |
| timeout = ieee->current_network.beacon_interval; |
| ieee->current_network.dtim_data = RTLLIB_DTIM_INVALID; |
| /* there's no need to nofity AP that I find you buffered |
| * with broadcast packet |
| */ |
| if (dtim & (RTLLIB_DTIM_UCAST & ieee->ps)) |
| return 2; |
| |
| if (!time_after(jiffies, |
| dev_trans_start(ieee->dev) + msecs_to_jiffies(timeout))) |
| return 0; |
| if (!time_after(jiffies, |
| ieee->last_rx_ps_time + msecs_to_jiffies(timeout))) |
| return 0; |
| if ((ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE) && |
| (ieee->mgmt_queue_tail != ieee->mgmt_queue_head)) |
| return 0; |
| |
| if (time) { |
| if (ieee->bAwakePktSent) { |
| pPSC->LPSAwakeIntvl = 1; |
| } else { |
| u8 MaxPeriod = 1; |
| |
| if (pPSC->LPSAwakeIntvl == 0) |
| pPSC->LPSAwakeIntvl = 1; |
| if (pPSC->RegMaxLPSAwakeIntvl == 0) |
| MaxPeriod = 1; |
| else if (pPSC->RegMaxLPSAwakeIntvl == 0xFF) |
| MaxPeriod = ieee->current_network.dtim_period; |
| else |
| MaxPeriod = pPSC->RegMaxLPSAwakeIntvl; |
| pPSC->LPSAwakeIntvl = (pPSC->LPSAwakeIntvl >= |
| MaxPeriod) ? MaxPeriod : |
| (pPSC->LPSAwakeIntvl + 1); |
| } |
| { |
| u8 LPSAwakeIntvl_tmp = 0; |
| u8 period = ieee->current_network.dtim_period; |
| u8 count = ieee->current_network.tim.tim_count; |
| |
| if (count == 0) { |
| if (pPSC->LPSAwakeIntvl > period) |
| LPSAwakeIntvl_tmp = period + |
| (pPSC->LPSAwakeIntvl - |
| period) - |
| ((pPSC->LPSAwakeIntvl-period) % |
| period); |
| else |
| LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl; |
| |
| } else { |
| if (pPSC->LPSAwakeIntvl > |
| ieee->current_network.tim.tim_count) |
| LPSAwakeIntvl_tmp = count + |
| (pPSC->LPSAwakeIntvl - count) - |
| ((pPSC->LPSAwakeIntvl-count)%period); |
| else |
| LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl; |
| } |
| |
| *time = ieee->current_network.last_dtim_sta_time |
| + msecs_to_jiffies(ieee->current_network.beacon_interval * |
| LPSAwakeIntvl_tmp); |
| } |
| } |
| |
| return 1; |
| |
| |
| } |
| |
| static inline void rtllib_sta_ps(struct rtllib_device *ieee) |
| { |
| u64 time; |
| short sleep; |
| unsigned long flags, flags2; |
| |
| spin_lock_irqsave(&ieee->lock, flags); |
| |
| if ((ieee->ps == RTLLIB_PS_DISABLED || |
| ieee->iw_mode != IW_MODE_INFRA || |
| ieee->state != RTLLIB_LINKED)) { |
| RT_TRACE(COMP_DBG, |
| "=====>%s(): no need to ps,wake up!! ieee->ps is %d, ieee->iw_mode is %d, ieee->state is %d\n", |
| __func__, ieee->ps, ieee->iw_mode, ieee->state); |
| spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2); |
| rtllib_sta_wakeup(ieee, 1); |
| |
| spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2); |
| } |
| sleep = rtllib_sta_ps_sleep(ieee, &time); |
| /* 2 wake, 1 sleep, 0 do nothing */ |
| if (sleep == 0) |
| goto out; |
| if (sleep == 1) { |
| if (ieee->sta_sleep == LPS_IS_SLEEP) { |
| ieee->enter_sleep_state(ieee->dev, time); |
| } else if (ieee->sta_sleep == LPS_IS_WAKE) { |
| spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2); |
| |
| if (ieee->ps_is_queue_empty(ieee->dev)) { |
| ieee->sta_sleep = LPS_WAIT_NULL_DATA_SEND; |
| ieee->ack_tx_to_ieee = 1; |
| rtllib_sta_ps_send_null_frame(ieee, 1); |
| ieee->ps_time = time; |
| } |
| spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2); |
| |
| } |
| |
| ieee->bAwakePktSent = false; |
| |
| } else if (sleep == 2) { |
| spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2); |
| |
| rtllib_sta_wakeup(ieee, 1); |
| |
| spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2); |
| } |
| |
| out: |
| spin_unlock_irqrestore(&ieee->lock, flags); |
| |
| } |
| |
| static void rtllib_sta_wakeup(struct rtllib_device *ieee, short nl) |
| { |
| if (ieee->sta_sleep == LPS_IS_WAKE) { |
| if (nl) { |
| if (ieee->pHTInfo->IOTAction & |
| HT_IOT_ACT_NULL_DATA_POWER_SAVING) { |
| ieee->ack_tx_to_ieee = 1; |
| rtllib_sta_ps_send_null_frame(ieee, 0); |
| } else { |
| ieee->ack_tx_to_ieee = 1; |
| rtllib_sta_ps_send_pspoll_frame(ieee); |
| } |
| } |
| return; |
| |
| } |
| |
| if (ieee->sta_sleep == LPS_IS_SLEEP) |
| ieee->sta_wake_up(ieee->dev); |
| if (nl) { |
| if (ieee->pHTInfo->IOTAction & |
| HT_IOT_ACT_NULL_DATA_POWER_SAVING) { |
| ieee->ack_tx_to_ieee = 1; |
| rtllib_sta_ps_send_null_frame(ieee, 0); |
| } else { |
| ieee->ack_tx_to_ieee = 1; |
| ieee->polling = true; |
| rtllib_sta_ps_send_pspoll_frame(ieee); |
| } |
| |
| } else { |
| ieee->sta_sleep = LPS_IS_WAKE; |
| ieee->polling = false; |
| } |
| } |
| |
| void rtllib_ps_tx_ack(struct rtllib_device *ieee, short success) |
| { |
| unsigned long flags, flags2; |
| |
| spin_lock_irqsave(&ieee->lock, flags); |
| |
| if (ieee->sta_sleep == LPS_WAIT_NULL_DATA_SEND) { |
| /* Null frame with PS bit set */ |
| if (success) { |
| ieee->sta_sleep = LPS_IS_SLEEP; |
| ieee->enter_sleep_state(ieee->dev, ieee->ps_time); |
| } |
| /* if the card report not success we can't be sure the AP |
| * has not RXed so we can't assume the AP believe us awake |
| */ |
| } else {/* 21112005 - tx again null without PS bit if lost */ |
| |
| if ((ieee->sta_sleep == LPS_IS_WAKE) && !success) { |
| spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2); |
| if (ieee->pHTInfo->IOTAction & |
| HT_IOT_ACT_NULL_DATA_POWER_SAVING) |
| rtllib_sta_ps_send_null_frame(ieee, 0); |
| else |
| rtllib_sta_ps_send_pspoll_frame(ieee); |
| spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2); |
| } |
| } |
| spin_unlock_irqrestore(&ieee->lock, flags); |
| } |
| EXPORT_SYMBOL(rtllib_ps_tx_ack); |
| |
| static void rtllib_process_action(struct rtllib_device *ieee, |
| struct sk_buff *skb) |
| { |
| struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data; |
| u8 *act = rtllib_get_payload((struct rtllib_hdr *)header); |
| u8 category = 0; |
| |
| if (act == NULL) { |
| netdev_warn(ieee->dev, |
| "Error getting payload of action frame\n"); |
| return; |
| } |
| |
| category = *act; |
| act++; |
| switch (category) { |
| case ACT_CAT_BA: |
| switch (*act) { |
| case ACT_ADDBAREQ: |
| rtllib_rx_ADDBAReq(ieee, skb); |
| break; |
| case ACT_ADDBARSP: |
| rtllib_rx_ADDBARsp(ieee, skb); |
| break; |
| case ACT_DELBA: |
| rtllib_rx_DELBA(ieee, skb); |
| break; |
| } |
| break; |
| default: |
| break; |
| } |
| } |
| |
| static inline int |
| rtllib_rx_assoc_resp(struct rtllib_device *ieee, struct sk_buff *skb, |
| struct rtllib_rx_stats *rx_stats) |
| { |
| u16 errcode; |
| int aid; |
| u8 *ies; |
| struct rtllib_assoc_response_frame *assoc_resp; |
| struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data; |
| u16 frame_ctl = le16_to_cpu(header->frame_ctl); |
| |
| netdev_dbg(ieee->dev, "received [RE]ASSOCIATION RESPONSE (%d)\n", |
| WLAN_FC_GET_STYPE(frame_ctl)); |
| |
| if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) && |
| ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATED && |
| (ieee->iw_mode == IW_MODE_INFRA)) { |
| errcode = assoc_parse(ieee, skb, &aid); |
| if (!errcode) { |
| struct rtllib_network *network = |
| kzalloc(sizeof(struct rtllib_network), |
| GFP_ATOMIC); |
| |
| if (!network) |
| return 1; |
| ieee->state = RTLLIB_LINKED; |
| ieee->assoc_id = aid; |
| ieee->softmac_stats.rx_ass_ok++; |
| /* station support qos */ |
| /* Let the register setting default with Legacy station */ |
| assoc_resp = (struct rtllib_assoc_response_frame *)skb->data; |
| if (ieee->current_network.qos_data.supported == 1) { |
| if (rtllib_parse_info_param(ieee, assoc_resp->info_element, |
| rx_stats->len - sizeof(*assoc_resp), |
| network, rx_stats)) { |
| kfree(network); |
| return 1; |
| } |
| memcpy(ieee->pHTInfo->PeerHTCapBuf, |
| network->bssht.bdHTCapBuf, |
| network->bssht.bdHTCapLen); |
| memcpy(ieee->pHTInfo->PeerHTInfoBuf, |
| network->bssht.bdHTInfoBuf, |
| network->bssht.bdHTInfoLen); |
| if (ieee->handle_assoc_response != NULL) |
| ieee->handle_assoc_response(ieee->dev, |
| (struct rtllib_assoc_response_frame *)header, |
| network); |
| } |
| kfree(network); |
| |
| kfree(ieee->assocresp_ies); |
| ieee->assocresp_ies = NULL; |
| ies = &(assoc_resp->info_element[0].id); |
| ieee->assocresp_ies_len = (skb->data + skb->len) - ies; |
| ieee->assocresp_ies = kmalloc(ieee->assocresp_ies_len, |
| GFP_ATOMIC); |
| if (ieee->assocresp_ies) |
| memcpy(ieee->assocresp_ies, ies, |
| ieee->assocresp_ies_len); |
| else { |
| netdev_info(ieee->dev, |
| "%s()Warning: can't alloc memory for assocresp_ies\n", |
| __func__); |
| ieee->assocresp_ies_len = 0; |
| } |
| rtllib_associate_complete(ieee); |
| } else { |
| /* aid could not been allocated */ |
| ieee->softmac_stats.rx_ass_err++; |
| netdev_info(ieee->dev, |
| "Association response status code 0x%x\n", |
| errcode); |
| if (ieee->AsocRetryCount < RT_ASOC_RETRY_LIMIT) |
| schedule_delayed_work( |
| &ieee->associate_procedure_wq, 0); |
| else |
| rtllib_associate_abort(ieee); |
| } |
| } |
| return 0; |
| } |
| |
| static void rtllib_rx_auth_resp(struct rtllib_device *ieee, struct sk_buff *skb) |
| { |
| u16 errcode; |
| u8 *challenge; |
| int chlen = 0; |
| bool bSupportNmode = true, bHalfSupportNmode = false; |
| |
| errcode = auth_parse(ieee->dev, skb, &challenge, &chlen); |
| |
| if (errcode) { |
| ieee->softmac_stats.rx_auth_rs_err++; |
| netdev_info(ieee->dev, |
| "Authentication response status code 0x%x", |
| errcode); |
| rtllib_associate_abort(ieee); |
| return; |
| } |
| |
| if (ieee->open_wep || !challenge) { |
| ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATED; |
| ieee->softmac_stats.rx_auth_rs_ok++; |
| if (!(ieee->pHTInfo->IOTAction & HT_IOT_ACT_PURE_N_MODE)) { |
| if (!ieee->GetNmodeSupportBySecCfg(ieee->dev)) { |
| if (IsHTHalfNmodeAPs(ieee)) { |
| bSupportNmode = true; |
| bHalfSupportNmode = true; |
| } else { |
| bSupportNmode = false; |
| bHalfSupportNmode = false; |
| } |
| } |
| } |
| /* Dummy wirless mode setting to avoid encryption issue */ |
| if (bSupportNmode) { |
| ieee->SetWirelessMode(ieee->dev, |
| ieee->current_network.mode); |
| } else { |
| /*TODO*/ |
| ieee->SetWirelessMode(ieee->dev, IEEE_G); |
| } |
| |
| if ((ieee->current_network.mode == IEEE_N_24G) && |
| bHalfSupportNmode) { |
| netdev_info(ieee->dev, "======>enter half N mode\n"); |
| ieee->bHalfWirelessN24GMode = true; |
| } else { |
| ieee->bHalfWirelessN24GMode = false; |
| } |
| rtllib_associate_step2(ieee); |
| } else { |
| rtllib_auth_challenge(ieee, challenge, chlen); |
| } |
| } |
| |
| static inline int |
| rtllib_rx_auth(struct rtllib_device *ieee, struct sk_buff *skb, |
| struct rtllib_rx_stats *rx_stats) |
| { |
| |
| if (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) { |
| if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING && |
| (ieee->iw_mode == IW_MODE_INFRA)) { |
| netdev_dbg(ieee->dev, |
| "Received authentication response"); |
| rtllib_rx_auth_resp(ieee, skb); |
| } else if (ieee->iw_mode == IW_MODE_MASTER) { |
| rtllib_rx_auth_rq(ieee, skb); |
| } |
| } |
| return 0; |
| } |
| |
| static inline int |
| rtllib_rx_deauth(struct rtllib_device *ieee, struct sk_buff *skb) |
| { |
| struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data; |
| u16 frame_ctl; |
| |
| if (memcmp(header->addr3, ieee->current_network.bssid, ETH_ALEN) != 0) |
| return 0; |
| |
| /* FIXME for now repeat all the association procedure |
| * both for disassociation and deauthentication |
| */ |
| if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) && |
| ieee->state == RTLLIB_LINKED && |
| (ieee->iw_mode == IW_MODE_INFRA)) { |
| frame_ctl = le16_to_cpu(header->frame_ctl); |
| netdev_info(ieee->dev, |
| "==========>received disassoc/deauth(%x) frame, reason code:%x\n", |
| WLAN_FC_GET_STYPE(frame_ctl), |
| ((struct rtllib_disassoc *)skb->data)->reason); |
| ieee->state = RTLLIB_ASSOCIATING; |
| ieee->softmac_stats.reassoc++; |
| ieee->is_roaming = true; |
| ieee->LinkDetectInfo.bBusyTraffic = false; |
| rtllib_disassociate(ieee); |
| RemovePeerTS(ieee, header->addr2); |
| if (ieee->LedControlHandler != NULL) |
| ieee->LedControlHandler(ieee->dev, |
| LED_CTL_START_TO_LINK); |
| |
| if (!(ieee->rtllib_ap_sec_type(ieee) & |
| (SEC_ALG_CCMP|SEC_ALG_TKIP))) |
| schedule_delayed_work( |
| &ieee->associate_procedure_wq, 5); |
| } |
| return 0; |
| } |
| |
| inline int rtllib_rx_frame_softmac(struct rtllib_device *ieee, |
| struct sk_buff *skb, |
| struct rtllib_rx_stats *rx_stats, u16 type, |
| u16 stype) |
| { |
| struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data; |
| u16 frame_ctl; |
| |
| if (!ieee->proto_started) |
| return 0; |
| |
| frame_ctl = le16_to_cpu(header->frame_ctl); |
| switch (WLAN_FC_GET_STYPE(frame_ctl)) { |
| case RTLLIB_STYPE_ASSOC_RESP: |
| case RTLLIB_STYPE_REASSOC_RESP: |
| if (rtllib_rx_assoc_resp(ieee, skb, rx_stats) == 1) |
| return 1; |
| break; |
| case RTLLIB_STYPE_ASSOC_REQ: |
| case RTLLIB_STYPE_REASSOC_REQ: |
| if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) && |
| ieee->iw_mode == IW_MODE_MASTER) |
| rtllib_rx_assoc_rq(ieee, skb); |
| break; |
| case RTLLIB_STYPE_AUTH: |
| rtllib_rx_auth(ieee, skb, rx_stats); |
| break; |
| case RTLLIB_STYPE_DISASSOC: |
| case RTLLIB_STYPE_DEAUTH: |
| rtllib_rx_deauth(ieee, skb); |
| break; |
| case RTLLIB_STYPE_MANAGE_ACT: |
| rtllib_process_action(ieee, skb); |
| break; |
| default: |
| return -1; |
| } |
| return 0; |
| } |
| |
| /* following are for a simpler TX queue management. |
| * Instead of using netif_[stop/wake]_queue the driver |
| * will use these two functions (plus a reset one), that |
| * will internally use the kernel netif_* and takes |
| * care of the ieee802.11 fragmentation. |
| * So the driver receives a fragment per time and might |
| * call the stop function when it wants to not |
| * have enough room to TX an entire packet. |
| * This might be useful if each fragment needs it's own |
| * descriptor, thus just keep a total free memory > than |
| * the max fragmentation threshold is not enough.. If the |
| * ieee802.11 stack passed a TXB struct then you need |
| * to keep N free descriptors where |
| * N = MAX_PACKET_SIZE / MIN_FRAG_TRESHOLD |
| * In this way you need just one and the 802.11 stack |
| * will take care of buffering fragments and pass them to |
| * to the driver later, when it wakes the queue. |
| */ |
| void rtllib_softmac_xmit(struct rtllib_txb *txb, struct rtllib_device *ieee) |
| { |
| |
| unsigned int queue_index = txb->queue_index; |
| unsigned long flags; |
| int i; |
| struct cb_desc *tcb_desc = NULL; |
| unsigned long queue_len = 0; |
| |
| spin_lock_irqsave(&ieee->lock, flags); |
| |
| /* called with 2nd parm 0, no tx mgmt lock required */ |
| rtllib_sta_wakeup(ieee, 0); |
| |
| /* update the tx status */ |
| tcb_desc = (struct cb_desc *)(txb->fragments[0]->cb + |
| MAX_DEV_ADDR_SIZE); |
| if (tcb_desc->bMulticast) |
| ieee->stats.multicast++; |
| |
| /* if xmit available, just xmit it immediately, else just insert it to |
| * the wait queue |
| */ |
| for (i = 0; i < txb->nr_frags; i++) { |
| queue_len = skb_queue_len(&ieee->skb_waitQ[queue_index]); |
| if ((queue_len != 0) || |
| (!ieee->check_nic_enough_desc(ieee->dev, queue_index)) || |
| (ieee->queue_stop)) { |
| /* insert the skb packet to the wait queue |
| * as for the completion function, it does not need |
| * to check it any more. |
| */ |
| if (queue_len < 200) |
| skb_queue_tail(&ieee->skb_waitQ[queue_index], |
| txb->fragments[i]); |
| else |
| kfree_skb(txb->fragments[i]); |
| } else { |
| ieee->softmac_data_hard_start_xmit( |
| txb->fragments[i], |
| ieee->dev, ieee->rate); |
| } |
| } |
| |
| rtllib_txb_free(txb); |
| |
| spin_unlock_irqrestore(&ieee->lock, flags); |
| |
| } |
| |
| void rtllib_reset_queue(struct rtllib_device *ieee) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&ieee->lock, flags); |
| init_mgmt_queue(ieee); |
| if (ieee->tx_pending.txb) { |
| rtllib_txb_free(ieee->tx_pending.txb); |
| ieee->tx_pending.txb = NULL; |
| } |
| ieee->queue_stop = 0; |
| spin_unlock_irqrestore(&ieee->lock, flags); |
| |
| } |
| EXPORT_SYMBOL(rtllib_reset_queue); |
| |
| void rtllib_stop_all_queues(struct rtllib_device *ieee) |
| { |
| unsigned int i; |
| |
| for (i = 0; i < ieee->dev->num_tx_queues; i++) |
| netdev_get_tx_queue(ieee->dev, i)->trans_start = jiffies; |
| |
| netif_tx_stop_all_queues(ieee->dev); |
| } |
| |
| void rtllib_wake_all_queues(struct rtllib_device *ieee) |
| { |
| netif_tx_wake_all_queues(ieee->dev); |
| } |
| |
| /* called in user context only */ |
| static void rtllib_start_master_bss(struct rtllib_device *ieee) |
| { |
| ieee->assoc_id = 1; |
| |
| if (ieee->current_network.ssid_len == 0) { |
| strncpy(ieee->current_network.ssid, |
| RTLLIB_DEFAULT_TX_ESSID, |
| IW_ESSID_MAX_SIZE); |
| |
| ieee->current_network.ssid_len = |
| strlen(RTLLIB_DEFAULT_TX_ESSID); |
| ieee->ssid_set = 1; |
| } |
| |
| ether_addr_copy(ieee->current_network.bssid, ieee->dev->dev_addr); |
| |
| ieee->set_chan(ieee->dev, ieee->current_network.channel); |
| ieee->state = RTLLIB_LINKED; |
| ieee->link_change(ieee->dev); |
| notify_wx_assoc_event(ieee); |
| |
| if (ieee->data_hard_resume) |
| ieee->data_hard_resume(ieee->dev); |
| |
| netif_carrier_on(ieee->dev); |
| } |
| |
| static void rtllib_start_monitor_mode(struct rtllib_device *ieee) |
| { |
| /* reset hardware status */ |
| if (ieee->raw_tx) { |
| if (ieee->data_hard_resume) |
| ieee->data_hard_resume(ieee->dev); |
| |
| netif_carrier_on(ieee->dev); |
| } |
| } |
| |
| static void rtllib_start_ibss_wq(void *data) |
| { |
| struct rtllib_device *ieee = container_of_dwork_rsl(data, |
| struct rtllib_device, start_ibss_wq); |
| /* iwconfig mode ad-hoc will schedule this and return |
| * on the other hand this will block further iwconfig SET |
| * operations because of the wx_mutex hold. |
| * Anyway some most set operations set a flag to speed-up |
| * (abort) this wq (when syncro scanning) before sleeping |
| * on the mutex |
| */ |
| if (!ieee->proto_started) { |
| netdev_info(ieee->dev, "==========oh driver down return\n"); |
| return; |
| } |
| mutex_lock(&ieee->wx_mutex); |
| |
| if (ieee->current_network.ssid_len == 0) { |
| strcpy(ieee->current_network.ssid, RTLLIB_DEFAULT_TX_ESSID); |
| ieee->current_network.ssid_len = strlen(RTLLIB_DEFAULT_TX_ESSID); |
| ieee->ssid_set = 1; |
| } |
| |
| ieee->state = RTLLIB_NOLINK; |
| ieee->mode = IEEE_G; |
| /* check if we have this cell in our network list */ |
| rtllib_softmac_check_all_nets(ieee); |
| |
| |
| /* if not then the state is not linked. Maybe the user switched to |
| * ad-hoc mode just after being in monitor mode, or just after |
| * being very few time in managed mode (so the card have had no |
| * time to scan all the chans..) or we have just run up the iface |
| * after setting ad-hoc mode. So we have to give another try.. |
| * Here, in ibss mode, should be safe to do this without extra care |
| * (in bss mode we had to make sure no-one tried to associate when |
| * we had just checked the ieee->state and we was going to start the |
| * scan) because in ibss mode the rtllib_new_net function, when |
| * finds a good net, just set the ieee->state to RTLLIB_LINKED, |
| * so, at worst, we waste a bit of time to initiate an unneeded syncro |
| * scan, that will stop at the first round because it sees the state |
| * associated. |
| */ |
| if (ieee->state == RTLLIB_NOLINK) |
| rtllib_start_scan_syncro(ieee, 0); |
| |
| /* the network definitively is not here.. create a new cell */ |
| if (ieee->state == RTLLIB_NOLINK) { |
| netdev_info(ieee->dev, "creating new IBSS cell\n"); |
| ieee->current_network.channel = ieee->IbssStartChnl; |
| if (!ieee->wap_set) |
| eth_random_addr(ieee->current_network.bssid); |
| |
| if (ieee->modulation & RTLLIB_CCK_MODULATION) { |
| |
| ieee->current_network.rates_len = 4; |
| |
| ieee->current_network.rates[0] = |
| RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_1MB; |
| ieee->current_network.rates[1] = |
| RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_2MB; |
| ieee->current_network.rates[2] = |
| RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_5MB; |
| ieee->current_network.rates[3] = |
| RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_11MB; |
| |
| } else |
| ieee->current_network.rates_len = 0; |
| |
| if (ieee->modulation & RTLLIB_OFDM_MODULATION) { |
| ieee->current_network.rates_ex_len = 8; |
| |
| ieee->current_network.rates_ex[0] = |
| RTLLIB_OFDM_RATE_6MB; |
| ieee->current_network.rates_ex[1] = |
| RTLLIB_OFDM_RATE_9MB; |
| ieee->current_network.rates_ex[2] = |
| RTLLIB_OFDM_RATE_12MB; |
| ieee->current_network.rates_ex[3] = |
| RTLLIB_OFDM_RATE_18MB; |
| ieee->current_network.rates_ex[4] = |
| RTLLIB_OFDM_RATE_24MB; |
| ieee->current_network.rates_ex[5] = |
| RTLLIB_OFDM_RATE_36MB; |
| ieee->current_network.rates_ex[6] = |
| RTLLIB_OFDM_RATE_48MB; |
| ieee->current_network.rates_ex[7] = |
| RTLLIB_OFDM_RATE_54MB; |
| |
| ieee->rate = 108; |
| } else { |
| ieee->current_network.rates_ex_len = 0; |
| ieee->rate = 22; |
| } |
| |
| ieee->current_network.qos_data.supported = 0; |
| ieee->SetWirelessMode(ieee->dev, IEEE_G); |
| ieee->current_network.mode = ieee->mode; |
| ieee->current_network.atim_window = 0; |
| ieee->current_network.capability = WLAN_CAPABILITY_IBSS; |
| } |
| |
| netdev_info(ieee->dev, "%s(): ieee->mode = %d\n", __func__, ieee->mode); |
| if ((ieee->mode == IEEE_N_24G) || (ieee->mode == IEEE_N_5G)) |
| HTUseDefaultSetting(ieee); |
| else |
| ieee->pHTInfo->bCurrentHTSupport = false; |
| |
| ieee->SetHwRegHandler(ieee->dev, HW_VAR_MEDIA_STATUS, |
| (u8 *)(&ieee->state)); |
| |
| ieee->state = RTLLIB_LINKED; |
| ieee->link_change(ieee->dev); |
| |
| HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT); |
| if (ieee->LedControlHandler != NULL) |
| ieee->LedControlHandler(ieee->dev, LED_CTL_LINK); |
| |
| rtllib_start_send_beacons(ieee); |
| |
| notify_wx_assoc_event(ieee); |
| |
| if (ieee->data_hard_resume) |
| ieee->data_hard_resume(ieee->dev); |
| |
| netif_carrier_on(ieee->dev); |
| |
| mutex_unlock(&ieee->wx_mutex); |
| } |
| |
| inline void rtllib_start_ibss(struct rtllib_device *ieee) |
| { |
| schedule_delayed_work(&ieee->start_ibss_wq, msecs_to_jiffies(150)); |
| } |
| |
| /* this is called only in user context, with wx_mutex held */ |
| static void rtllib_start_bss(struct rtllib_device *ieee) |
| { |
| unsigned long flags; |
| |
| if (IS_DOT11D_ENABLE(ieee) && !IS_COUNTRY_IE_VALID(ieee)) { |
| if (!ieee->bGlobalDomain) |
| return; |
| } |
| /* check if we have already found the net we |
| * are interested in (if any). |
| * if not (we are disassociated and we are not |
| * in associating / authenticating phase) start the background scanning. |
| */ |
| rtllib_softmac_check_all_nets(ieee); |
| |
| /* ensure no-one start an associating process (thus setting |
| * the ieee->state to rtllib_ASSOCIATING) while we |
| * have just checked it and we are going to enable scan. |
| * The rtllib_new_net function is always called with |
| * lock held (from both rtllib_softmac_check_all_nets and |
| * the rx path), so we cannot be in the middle of such function |
| */ |
| spin_lock_irqsave(&ieee->lock, flags); |
| |
| if (ieee->state == RTLLIB_NOLINK) |
| rtllib_start_scan(ieee); |
| spin_unlock_irqrestore(&ieee->lock, flags); |
| } |
| |
| static void rtllib_link_change_wq(void *data) |
| { |
| struct rtllib_device *ieee = container_of_dwork_rsl(data, |
| struct rtllib_device, link_change_wq); |
| ieee->link_change(ieee->dev); |
| } |
| /* called only in userspace context */ |
| void rtllib_disassociate(struct rtllib_device *ieee) |
| { |
| netif_carrier_off(ieee->dev); |
| if (ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE) |
| rtllib_reset_queue(ieee); |
| |
| if (ieee->data_hard_stop) |
| ieee->data_hard_stop(ieee->dev); |
| if (IS_DOT11D_ENABLE(ieee)) |
| Dot11d_Reset(ieee); |
| ieee->state = RTLLIB_NOLINK; |
| ieee->is_set_key = false; |
| ieee->wap_set = 0; |
| |
| schedule_delayed_work(&ieee->link_change_wq, 0); |
| |
| notify_wx_assoc_event(ieee); |
| } |
| |
| static void rtllib_associate_retry_wq(void *data) |
| { |
| struct rtllib_device *ieee = container_of_dwork_rsl(data, |
| struct rtllib_device, associate_retry_wq); |
| unsigned long flags; |
| |
| mutex_lock(&ieee->wx_mutex); |
| if (!ieee->proto_started) |
| goto exit; |
| |
| if (ieee->state != RTLLIB_ASSOCIATING_RETRY) |
| goto exit; |
| |
| /* until we do not set the state to RTLLIB_NOLINK |
| * there are no possibility to have someone else trying |
| * to start an association procedure (we get here with |
| * ieee->state = RTLLIB_ASSOCIATING). |
| * When we set the state to RTLLIB_NOLINK it is possible |
| * that the RX path run an attempt to associate, but |
| * both rtllib_softmac_check_all_nets and the |
| * RX path works with ieee->lock held so there are no |
| * problems. If we are still disassociated then start a scan. |
| * the lock here is necessary to ensure no one try to start |
| * an association procedure when we have just checked the |
| * state and we are going to start the scan. |
| */ |
| ieee->beinretry = true; |
| ieee->state = RTLLIB_NOLINK; |
| |
| rtllib_softmac_check_all_nets(ieee); |
| |
| spin_lock_irqsave(&ieee->lock, flags); |
| |
| if (ieee->state == RTLLIB_NOLINK) |
| rtllib_start_scan(ieee); |
| spin_unlock_irqrestore(&ieee->lock, flags); |
| |
| ieee->beinretry = false; |
| exit: |
| mutex_unlock(&ieee->wx_mutex); |
| } |
| |
| static struct sk_buff *rtllib_get_beacon_(struct rtllib_device *ieee) |
| { |
| const u8 broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; |
| |
| struct sk_buff *skb; |
| struct rtllib_probe_response *b; |
| |
| skb = rtllib_probe_resp(ieee, broadcast_addr); |
| |
| if (!skb) |
| return NULL; |
| |
| b = (struct rtllib_probe_response *) skb->data; |
| b->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_BEACON); |
| |
| return skb; |
| |
| } |
| |
| struct sk_buff *rtllib_get_beacon(struct rtllib_device *ieee) |
| { |
| struct sk_buff *skb; |
| struct rtllib_probe_response *b; |
| |
| skb = rtllib_get_beacon_(ieee); |
| if (!skb) |
| return NULL; |
| |
| b = (struct rtllib_probe_response *) skb->data; |
| b->header.seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4); |
| |
| if (ieee->seq_ctrl[0] == 0xFFF) |
| ieee->seq_ctrl[0] = 0; |
| else |
| ieee->seq_ctrl[0]++; |
| |
| return skb; |
| } |
| EXPORT_SYMBOL(rtllib_get_beacon); |
| |
| void rtllib_softmac_stop_protocol(struct rtllib_device *ieee, u8 mesh_flag, |
| u8 shutdown) |
| { |
| rtllib_stop_scan_syncro(ieee); |
| mutex_lock(&ieee->wx_mutex); |
| rtllib_stop_protocol(ieee, shutdown); |
| mutex_unlock(&ieee->wx_mutex); |
| } |
| EXPORT_SYMBOL(rtllib_softmac_stop_protocol); |
| |
| |
| void rtllib_stop_protocol(struct rtllib_device *ieee, u8 shutdown) |
| { |
| if (!ieee->proto_started) |
| return; |
| |
| if (shutdown) { |
| ieee->proto_started = 0; |
| ieee->proto_stoppping = 1; |
| if (ieee->rtllib_ips_leave != NULL) |
| ieee->rtllib_ips_leave(ieee->dev); |
| } |
| |
| rtllib_stop_send_beacons(ieee); |
| del_timer_sync(&ieee->associate_timer); |
| cancel_delayed_work_sync(&ieee->associate_retry_wq); |
| cancel_delayed_work_sync(&ieee->start_ibss_wq); |
| cancel_delayed_work_sync(&ieee->link_change_wq); |
| rtllib_stop_scan(ieee); |
| |
| if (ieee->state <= RTLLIB_ASSOCIATING_AUTHENTICATED) |
| ieee->state = RTLLIB_NOLINK; |
| |
| if (ieee->state == RTLLIB_LINKED) { |
| if (ieee->iw_mode == IW_MODE_INFRA) |
| SendDisassociation(ieee, 1, WLAN_REASON_DEAUTH_LEAVING); |
| rtllib_disassociate(ieee); |
| } |
| |
| if (shutdown) { |
| RemoveAllTS(ieee); |
| ieee->proto_stoppping = 0; |
| } |
| kfree(ieee->assocreq_ies); |
| ieee->assocreq_ies = NULL; |
| ieee->assocreq_ies_len = 0; |
| kfree(ieee->assocresp_ies); |
| ieee->assocresp_ies = NULL; |
| ieee->assocresp_ies_len = 0; |
| } |
| |
| void rtllib_softmac_start_protocol(struct rtllib_device *ieee, u8 mesh_flag) |
| { |
| mutex_lock(&ieee->wx_mutex); |
| rtllib_start_protocol(ieee); |
| mutex_unlock(&ieee->wx_mutex); |
| } |
| EXPORT_SYMBOL(rtllib_softmac_start_protocol); |
| |
| void rtllib_start_protocol(struct rtllib_device *ieee) |
| { |
| short ch = 0; |
| int i = 0; |
| |
| rtllib_update_active_chan_map(ieee); |
| |
| if (ieee->proto_started) |
| return; |
| |
| ieee->proto_started = 1; |
| |
| if (ieee->current_network.channel == 0) { |
| do { |
| ch++; |
| if (ch > MAX_CHANNEL_NUMBER) |
| return; /* no channel found */ |
| } while (!ieee->active_channel_map[ch]); |
| ieee->current_network.channel = ch; |
| } |
| |
| if (ieee->current_network.beacon_interval == 0) |
| ieee->current_network.beacon_interval = 100; |
| |
| for (i = 0; i < 17; i++) { |
| ieee->last_rxseq_num[i] = -1; |
| ieee->last_rxfrag_num[i] = -1; |
| ieee->last_packet_time[i] = 0; |
| } |
| |
| if (ieee->UpdateBeaconInterruptHandler) |
| ieee->UpdateBeaconInterruptHandler(ieee->dev, false); |
| |
| ieee->wmm_acm = 0; |
| /* if the user set the MAC of the ad-hoc cell and then |
| * switch to managed mode, shall we make sure that association |
| * attempts does not fail just because the user provide the essid |
| * and the nic is still checking for the AP MAC ?? |
| */ |
| if (ieee->iw_mode == IW_MODE_INFRA) { |
| rtllib_start_bss(ieee); |
| } else if (ieee->iw_mode == IW_MODE_ADHOC) { |
| if (ieee->UpdateBeaconInterruptHandler) |
| ieee->UpdateBeaconInterruptHandler(ieee->dev, true); |
| |
| rtllib_start_ibss(ieee); |
| |
| } else if (ieee->iw_mode == IW_MODE_MASTER) { |
| rtllib_start_master_bss(ieee); |
| } else if (ieee->iw_mode == IW_MODE_MONITOR) { |
| rtllib_start_monitor_mode(ieee); |
| } |
| } |
| |
| void rtllib_softmac_init(struct rtllib_device *ieee) |
| { |
| int i; |
| |
| memset(&ieee->current_network, 0, sizeof(struct rtllib_network)); |
| |
| ieee->state = RTLLIB_NOLINK; |
| for (i = 0; i < 5; i++) |
| ieee->seq_ctrl[i] = 0; |
| ieee->pDot11dInfo = kzalloc(sizeof(struct rt_dot11d_info), GFP_ATOMIC); |
| if (!ieee->pDot11dInfo) |
| netdev_err(ieee->dev, "Can't alloc memory for DOT11D\n"); |
| ieee->LinkDetectInfo.SlotIndex = 0; |
| ieee->LinkDetectInfo.SlotNum = 2; |
| ieee->LinkDetectInfo.NumRecvBcnInPeriod = 0; |
| ieee->LinkDetectInfo.NumRecvDataInPeriod = 0; |
| ieee->LinkDetectInfo.NumTxOkInPeriod = 0; |
| ieee->LinkDetectInfo.NumRxOkInPeriod = 0; |
| ieee->LinkDetectInfo.NumRxUnicastOkInPeriod = 0; |
| ieee->bIsAggregateFrame
|