| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Larry Finger | 10723 | 67.17% | 11 | 12.64% |
| Greg Kroah-Hartman | 4215 | 26.40% | 2 | 2.30% |
| Mateusz Kulikowski | 403 | 2.52% | 14 | 16.09% |
| David Woo | 118 | 0.74% | 1 | 1.15% |
| Sean MacLennan | 107 | 0.67% | 4 | 4.60% |
| Amitoj Kaur Chawla | 81 | 0.51% | 1 | 1.15% |
| Binoy Jayan | 49 | 0.31% | 3 | 3.45% |
| Kees Cook | 38 | 0.24% | 2 | 2.30% |
| Gnanachandran Dhanapal | 37 | 0.23% | 1 | 1.15% |
| Rashika Kheria | 29 | 0.18% | 4 | 4.60% |
| Hema Prathaban | 13 | 0.08% | 2 | 2.30% |
| Allen Pais | 13 | 0.08% | 1 | 1.15% |
| Len Baker | 10 | 0.06% | 1 | 1.15% |
| Dan Carpenter | 9 | 0.06% | 1 | 1.15% |
| Baoyou Xie | 9 | 0.06% | 1 | 1.15% |
| Himadri Pandya | 9 | 0.06% | 3 | 3.45% |
| Devendra Naga | 8 | 0.05% | 1 | 1.15% |
| Hariprasad Kelam | 8 | 0.05% | 1 | 1.15% |
| Behan Webster | 8 | 0.05% | 3 | 3.45% |
| William Durand | 7 | 0.04% | 6 | 6.90% |
| Malcolm Priestley | 7 | 0.04% | 1 | 1.15% |
| Vaishali Thakkar | 6 | 0.04% | 1 | 1.15% |
| yuan linyu | 6 | 0.04% | 1 | 1.15% |
| Samuel Ortiz | 6 | 0.04% | 1 | 1.15% |
| Bhumika Goyal | 5 | 0.03% | 1 | 1.15% |
| Wei Yongjun | 5 | 0.03% | 1 | 1.15% |
| Mike McCormack | 5 | 0.03% | 1 | 1.15% |
| Justin P. Mattock | 4 | 0.03% | 1 | 1.15% |
| Paul Gortmaker | 4 | 0.03% | 1 | 1.15% |
| Johannes Berg | 3 | 0.02% | 1 | 1.15% |
| Valentina Manea | 3 | 0.02% | 2 | 2.30% |
| Florian Westphal | 3 | 0.02% | 1 | 1.15% |
| Xiaochen Wang | 3 | 0.02% | 1 | 1.15% |
| Hari Prasath Gujulan Elango | 2 | 0.01% | 1 | 1.15% |
| Masanari Iida | 2 | 0.01% | 2 | 2.30% |
| Colin Ian King | 2 | 0.01% | 2 | 2.30% |
| Thomas Meyer | 1 | 0.01% | 1 | 1.15% |
| Jesper Juhl | 1 | 0.01% | 1 | 1.15% |
| Aya Mahfouz | 1 | 0.01% | 1 | 1.15% |
| Arno Tiemersma | 1 | 0.01% | 1 | 1.15% |
| Adam Buchbinder | 1 | 0.01% | 1 | 1.15% |
| Total | 15965 | 87 |
// SPDX-License-Identifier: GPL-2.0 /* 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. */ #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(struct timer_list *t) { struct rtllib_device *ieee = from_timer(ieee, t, beacon_timer); 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_scan_complete(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_scan_complete(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) { 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 = kmemdup(ies, ieee->assocreq_ies_len, GFP_ATOMIC); if (!ieee->assocreq_ies) 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(struct timer_list *t) { struct rtllib_device *dev = from_timer(dev, t, associate_timer); rtllib_associate_abort(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)) { /* Save the essid so that if it is hidden, it is * replaced with the essid provided by the user. */ if (!ssidbroad) { memcpy(tmp_ssid, ieee->current_network.ssid, ieee->current_network.ssid_len); tmp_ssid_len = ieee->current_network.ssid_len; } memcpy(&ieee->current_network, net, sizeof(ieee->current_network)); if (!ssidbroad) { memcpy(ieee->current_network.ssid, tmp_ssid, tmp_ssid_len); 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.bd_support_ht, 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.bd_support_ht) 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; 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 tasklet_struct *t) { struct rtllib_device *ieee = from_tasklet(ieee, t, ps_task); 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.bd_ht_cap_buf, network->bssht.bd_ht_cap_len); memcpy(ieee->pHTInfo->PeerHTInfoBuf, network->bssht.bd_ht_info_buf, network->bssht.bd_ht_info_len); 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 = kmemdup(ies, ieee->assocresp_ies_len, GFP_ATOMIC); if (!ieee->assocresp_ies) 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 * 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) { strscpy(ieee->current_network.ssid, RTLLIB_DEFAULT_TX_ESSID, sizeof(ieee->current_network.ssid)); 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->bss_start_channel; 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->global_domain) 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) { static 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->dot11d_info = kzalloc(sizeof(struct rt_dot11d_info), GFP_ATOMIC); if (!ieee->dot11d_info) 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 = false; ieee->assoc_id = 0; ieee->queue_stop = 0; ieee->scanning_continue = 0; ieee->softmac_features = 0; ieee->wap_set = 0; ieee->ssid_set = 0; ieee->proto_started = 0; ieee->proto_stoppping = 0; ieee->basic_rate = RTLLIB_DEFAULT_BASIC_RATE; ieee->rate = 22; ieee->ps = RTLLIB_PS_DISABLED; ieee->sta_sleep = LPS_IS_WAKE; ieee->Regdot11HTOperationalRateSet[0] = 0xff; ieee->Regdot11HTOperationalRateSet[1] = 0xff; ieee->Regdot11HTOperationalRateSet[4] = 0x01; ieee->Regdot11TxHTOperationalRateSet[0] = 0xff; ieee->Regdot11TxHTOperationalRateSet[1] = 0xff; ieee->Regdot11TxHTOperationalRateSet[4] = 0x01; ieee->FirstIe_InScan = false; ieee->actscanning = false; ieee->beinretry = false; ieee->is_set_key = false; init_mgmt_queue(ieee); ieee->tx_pending.txb = NULL; timer_setup(&ieee->associate_timer, rtllib_associate_abort_cb, 0); timer_setup(&ieee->beacon_timer, rtllib_send_beacon_cb, 0); INIT_DELAYED_WORK_RSL(&ieee->link_change_wq, (void *)rtllib_link_change_wq, ieee); INIT_DELAYED_WORK_RSL(&ieee->start_ibss_wq, (void *)rtllib_start_ibss_wq, ieee); INIT_WORK_RSL(&ieee->associate_complete_wq, (void *)rtllib_associate_complete_wq, ieee); INIT_DELAYED_WORK_RSL(&ieee->associate_procedure_wq, (void *)rtllib_associate_procedure_wq, ieee); INIT_DELAYED_WORK_RSL(&ieee->softmac_scan_wq, (void *)rtllib_softmac_scan_wq, ieee); INIT_DELAYED_WORK_RSL(&ieee->associate_retry_wq, (void *)rtllib_associate_retry_wq, ieee); INIT_WORK_RSL(&ieee->wx_sync_scan_wq, (void *)rtllib_wx_sync_scan_wq, ieee); mutex_init(&ieee->wx_mutex); mutex_init(&ieee->scan_mutex); mutex_init(&ieee->ips_mutex); spin_lock_init(&ieee->mgmt_tx_lock); spin_lock_init(&ieee->beacon_lock); tasklet_setup(&ieee->ps_task, rtllib_sta_ps); } void rtllib_softmac_free(struct rtllib_device *ieee) { mutex_lock(&ieee->wx_mutex); kfree(ieee->dot11d_info); ieee->dot11d_info = NULL; del_timer_sync(&ieee->associate_timer); cancel_delayed_work_sync(&ieee->associate_retry_wq); cancel_delayed_work_sync(&ieee->associate_procedure_wq); cancel_delayed_work_sync(&ieee->softmac_scan_wq); cancel_delayed_work_sync(&ieee->start_ibss_wq); cancel_delayed_work_sync(&ieee->hw_wakeup_wq); cancel_delayed_work_sync(&ieee->hw_sleep_wq); cancel_delayed_work_sync(&ieee->link_change_wq); cancel_work_sync(&ieee->associate_complete_wq); cancel_work_sync(&ieee->ips_leave_wq); cancel_work_sync(&ieee->wx_sync_scan_wq); mutex_unlock(&ieee->wx_mutex); tasklet_kill(&ieee->ps_task); } static inline struct sk_buff * rtllib_disauth_skb(struct rtllib_network *beacon, struct rtllib_device *ieee, u16 asRsn) { struct sk_buff *skb; struct rtllib_disauth *disauth; int len = sizeof(struct rtllib_disauth) + ieee->tx_headroom; skb = dev_alloc_skb(len); if (!skb) return NULL; skb_reserve(skb, ieee->tx_headroom); disauth = skb_put(skb, sizeof(struct rtllib_disauth)); disauth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DEAUTH); disauth->header.duration_id = 0; ether_addr_copy(disauth->header.addr1, beacon->bssid); ether_addr_copy(disauth->header.addr2, ieee->dev->dev_addr); ether_addr_copy(disauth->header.addr3, beacon->bssid); disauth->reason = cpu_to_le16(asRsn); return skb; } static inline struct sk_buff * rtllib_disassociate_skb(struct rtllib_network *beacon, struct rtllib_device *ieee, u16 asRsn) { struct sk_buff *skb; struct rtllib_disassoc *disass; int len = sizeof(struct rtllib_disassoc) + ieee->tx_headroom; skb = dev_alloc_skb(len); if (!skb) return NULL; skb_reserve(skb, ieee->tx_headroom); disass = skb_put(skb, sizeof(struct rtllib_disassoc)); disass->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DISASSOC); disass->header.duration_id = 0; ether_addr_copy(disass->header.addr1, beacon->bssid); ether_addr_copy(disass->header.addr2, ieee->dev->dev_addr); ether_addr_copy(disass->header.addr3, beacon->bssid); disass->reason = cpu_to_le16(asRsn); return skb; } void SendDisassociation(struct rtllib_device *ieee, bool deauth, u16 asRsn) { struct rtllib_network *beacon = &ieee->current_network; struct sk_buff *skb; if (deauth) skb = rtllib_disauth_skb(beacon, ieee, asRsn); else skb = rtllib_disassociate_skb(beacon, ieee, asRsn); if (skb) softmac_mgmt_xmit(skb, ieee); } u8 rtllib_ap_sec_type(struct rtllib_device *ieee) { static u8 ccmp_ie[4] = {0x00, 0x50, 0xf2, 0x04}; static u8 ccmp_rsn_ie[4] = {0x00, 0x0f, 0xac, 0x04}; int wpa_ie_len = ieee->wpa_ie_len; struct lib80211_crypt_data *crypt; int encrypt; crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx]; encrypt = (ieee->current_network.capability & WLAN_CAPABILITY_PRIVACY) || (ieee->host_encrypt && crypt && crypt->ops && (strcmp(crypt->ops->name, "R-WEP") == 0)); /* simply judge */ if (encrypt && (wpa_ie_len == 0)) { return SEC_ALG_WEP; } else if ((wpa_ie_len != 0)) { if (((ieee->wpa_ie[0] == 0xdd) && (!memcmp(&(ieee->wpa_ie[14]), ccmp_ie, 4))) || ((ieee->wpa_ie[0] == 0x30) && (!memcmp(&ieee->wpa_ie[10], ccmp_rsn_ie, 4)))) return SEC_ALG_CCMP; else return SEC_ALG_TKIP; } else { return SEC_ALG_NONE; } } static void rtllib_MgntDisconnectIBSS(struct rtllib_device *rtllib) { u8 OpMode; u8 i; bool bFilterOutNonAssociatedBSSID = false; rtllib->state = RTLLIB_NOLINK; for (i = 0; i < 6; i++) rtllib->current_network.bssid[i] = 0x55; rtllib->OpMode = RT_OP_MODE_NO_LINK; rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID, rtllib->current_network.bssid); OpMode = RT_OP_MODE_NO_LINK; rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS, &OpMode); rtllib_stop_send_beacons(rtllib); bFilterOutNonAssociatedBSSID = false; rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID, (u8 *)(&bFilterOutNonAssociatedBSSID)); notify_wx_assoc_event(rtllib); } static void rtllib_MlmeDisassociateRequest(struct rtllib_device *rtllib, u8 *asSta, u8 asRsn) { u8 i; u8 OpMode; RemovePeerTS(rtllib, asSta); if (memcmp(rtllib->current_network.bssid, asSta, 6) == 0) { rtllib->state = RTLLIB_NOLINK; for (i = 0; i < 6; i++) rtllib->current_network.bssid[i] = 0x22; OpMode = RT_OP_MODE_NO_LINK; rtllib->OpMode = RT_OP_MODE_NO_LINK; rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS, (u8 *)(&OpMode)); rtllib_disassociate(rtllib); rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID, rtllib->current_network.bssid); } } static void rtllib_MgntDisconnectAP( struct rtllib_device *rtllib, u8 asRsn ) { bool bFilterOutNonAssociatedBSSID = false; bFilterOutNonAssociatedBSSID = false; rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID, (u8 *)(&bFilterOutNonAssociatedBSSID)); rtllib_MlmeDisassociateRequest(rtllib, rtllib->current_network.bssid, asRsn); rtllib->state = RTLLIB_NOLINK; } bool rtllib_MgntDisconnect(struct rtllib_device *rtllib, u8 asRsn) { if (rtllib->ps != RTLLIB_PS_DISABLED) rtllib->sta_wake_up(rtllib->dev); if (rtllib->state == RTLLIB_LINKED) { if (rtllib->iw_mode == IW_MODE_ADHOC) rtllib_MgntDisconnectIBSS(rtllib); if (rtllib->iw_mode == IW_MODE_INFRA) rtllib_MgntDisconnectAP(rtllib, asRsn); } return true; } EXPORT_SYMBOL(rtllib_MgntDisconnect); void notify_wx_assoc_event(struct rtllib_device *ieee) { union iwreq_data wrqu; if (ieee->cannot_notify) return; wrqu.ap_addr.sa_family = ARPHRD_ETHER; if (ieee->state == RTLLIB_LINKED) memcpy(wrqu.ap_addr.sa_data, ieee->current_network.bssid, ETH_ALEN); else { netdev_info(ieee->dev, "%s(): Tell user space disconnected\n", __func__); eth_zero_addr(wrqu.ap_addr.sa_data); } wireless_send_event(ieee->dev, SIOCGIWAP, &wrqu, NULL); } EXPORT_SYMBOL(notify_wx_assoc_event);
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