// SPDX-License-Identifier: GPL-2.0 /* IEEE 802.11 SoftMAC layer * Copyright (c) 2005 Andrea Merello * * 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 #include #include #include #include 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; rate_len = RTLLIB_CCK_RATE_LEN + 2; 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; *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; *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 = 0; ieee->mgmt_queue_head = 0; } u8 mgnt_query_tx_rate_exclude_cck_rates(struct rtllib_device *ieee) { u16 i; u8 query_rate = 0; u8 basic_rate; for (i = 0; i < ieee->current_network.rates_len; i++) { basic_rate = ieee->current_network.rates[i] & 0x7F; if (!rtllib_is_cck_rate(basic_rate)) { if (query_rate == 0) { query_rate = basic_rate; } else { if (basic_rate < query_rate) query_rate = basic_rate; } } } if (query_rate == 0) { query_rate = 12; netdev_info(ieee->dev, "No basic_rate found!!\n"); } return query_rate; } static u8 mgnt_query_mgnt_frame_tx_rate(struct rtllib_device *ieee) { struct rt_hi_throughput *ht_info = ieee->ht_info; u8 rate; if (ht_info->iot_action & HT_IOT_ACT_MGNT_USE_CCK_6M) rate = 0x0c; else rate = ieee->basic_rate & 0x7f; if (rate == 0) 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 ieee80211_hdr_3addr *header = (struct ieee80211_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 (ieee80211_is_beacon(header->frame_control)) 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 = mgnt_query_mgnt_frame_tx_rate(ieee); tcb_desc->ratr_index = 7; tcb_desc->tx_dis_rate_fallback = 1; tcb_desc->tx_use_drv_assinged_rate = 1; if (single) { if (ieee->queue_stop) { enqueue_mgmt(ieee, skb); } else { header->seq_ctrl = 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_ctrl = 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 ieee80211_hdr_3addr *header = (struct ieee80211_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_control); type = WLAN_FC_GET_TYPE(fc); stype = WLAN_FC_GET_STYPE(fc); if (stype != IEEE80211_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 = mgnt_query_mgnt_frame_tx_rate(ieee); tcb_desc->ratr_index = 7; tcb_desc->tx_dis_rate_fallback = 1; tcb_desc->tx_use_drv_assinged_rate = 1; if (single) { if (type != RTLLIB_FTYPE_CTL) { header->seq_ctrl = 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_ctrl = 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_control = cpu_to_le16(IEEE80211_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; } /* Enables network monitor mode, all rx packets will be received. */ void rtllib_enable_net_monitor_mode(struct net_device *dev, bool init_state) { struct rtllib_device *ieee = netdev_priv_rsl(dev); netdev_info(dev, "========>Enter Monitor Mode\n"); ieee->allow_all_dest_addr_handler(dev, true, !init_state); } /* Disables network monitor mode. Only packets destinated to * us will be received. */ void rtllib_disable_net_monitor_mode(struct net_device *dev, bool init_state) { struct rtllib_device *ieee = netdev_priv_rsl(dev); netdev_info(dev, "========>Exit Monitor Mode\n"); ieee->allow_all_dest_addr_handler(dev, false, !init_state); } static void rtllib_send_probe(struct rtllib_device *ieee) { 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) { if (ieee->softmac_features & IEEE_SOFTMAC_PROBERQ) { rtllib_send_probe(ieee); rtllib_send_probe(ieee); } } /* 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) { union iwreq_data wrqu; short ch = 0; 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 * MAC80211_NOLINK until we found an interesting cell. * If so the ieee8021_new_net, called by the RX path * will set the state to MAC80211_LINKED, so we stop * scanning * 2- We are linked and the root uses run iwlist scan. * So we switch to MAC80211_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->link_state == MAC80211_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); /* 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; 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; if (!ieee->ieee_up) return; if (rtllib_act_scanning(ieee, true)) return; mutex_lock(&ieee->scan_mutex); if (ieee->rf_power_state == rf_off) { netdev_info(ieee->dev, "======>%s():rf state is rf_off, 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); schedule_delayed_work(&ieee->softmac_scan_wq, msecs_to_jiffies(RTLLIB_SOFTMAC_SCAN_TIME)); mutex_unlock(&ieee->scan_mutex); return; out: 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_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; mutex_unlock(&ieee->scan_mutex); cancel_delayed_work_sync(&ieee->softmac_scan_wq); } else { 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); } 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; } 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) { ieee->rtllib_ips_leave_wq(ieee->dev); 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); } } } /* called with wx_mutex held */ void rtllib_start_scan_syncro(struct rtllib_device *ieee) { ieee->sync_scan_hurryup = 0; if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) rtllib_softmac_scan_syncro(ieee); } 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_control = cpu_to_le16(IEEE80211_STYPE_AUTH); if (challengelen) auth->header.frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED); 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_null_func(struct rtllib_device *ieee, short pwr) { struct sk_buff *skb; struct ieee80211_hdr_3addr *hdr; skb = dev_alloc_skb(sizeof(struct ieee80211_hdr_3addr) + ieee->tx_headroom); if (!skb) return NULL; skb_reserve(skb, ieee->tx_headroom); hdr = skb_put(skb, sizeof(struct ieee80211_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_control = cpu_to_le16(RTLLIB_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | IEEE80211_FCTL_TODS | (pwr ? IEEE80211_FCTL_PM : 0)); return skb; } static struct sk_buff *rtllib_pspoll_func(struct rtllib_device *ieee) { struct sk_buff *skb; struct ieee80211_pspoll *hdr; skb = dev_alloc_skb(sizeof(struct ieee80211_pspoll) + ieee->tx_headroom); if (!skb) return NULL; skb_reserve(skb, ieee->tx_headroom); hdr = skb_put(skb, sizeof(struct ieee80211_pspoll)); 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_control = cpu_to_le16(RTLLIB_FTYPE_CTL | IEEE80211_STYPE_PSPOLL | IEEE80211_FCTL_PM); return skb; } static inline int sec_is_in_pmkid_list(struct rtllib_device *ieee, u8 *bssid) { int i = 0; do { if ((ieee->pmkid_list[i].used) && (memcmp(ieee->pmkid_list[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 pmk_cache_idx; 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) 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->forced_bg_mode) { ieee->ht_info->enable_ht = 0; ieee->mode = WIRELESS_MODE_G; } if (ieee->ht_info->current_ht_support && ieee->ht_info->enable_ht) { ht_cap_buf = (u8 *)&ieee->ht_info->self_ht_cap; ht_cap_len = sizeof(ieee->ht_info->self_ht_cap); ht_construct_capability_element(ieee, ht_cap_buf, &ht_cap_len, encrypt, true); if (ieee->ht_info->current_rt2rt_aggregation) { realtek_ie_buf = ieee->ht_info->sz_rt2rt_agg_buf; realtek_ie_len = sizeof(ieee->ht_info->sz_rt2rt_agg_buf); ht_construct_rt2rt_agg_element(ieee, realtek_ie_buf, &realtek_ie_len); } } if (beacon->ckip_supported) ckip_ie_len = 30 + 2; if (beacon->ccx_rm_enable) ccxrm_ie_len = 6 + 2; if (beacon->bss_ccx_ver_number >= 2) cxvernum_ie_len = 5 + 2; pmk_cache_idx = sec_is_in_pmkid_list(ieee, ieee->current_network.bssid); if (pmk_cache_idx >= 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_control = cpu_to_le16(IEEE80211_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 (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->ckip_supported) { static const u8 aironet_ie_oui[] = {0x00, 0x01, 0x66}; u8 ccx_aironet_buf[30]; struct octet_string os_ccx_aironet_ie; memset(ccx_aironet_buf, 0, 30); os_ccx_aironet_ie.octet = ccx_aironet_buf; os_ccx_aironet_ie.Length = sizeof(ccx_aironet_buf); memcpy(os_ccx_aironet_ie.octet, aironet_ie_oui, sizeof(aironet_ie_oui)); os_ccx_aironet_ie.octet[IE_CISCO_FLAG_POSITION] |= (SUPPORT_CKIP_PK | SUPPORT_CKIP_MIC); tag = skb_put(skb, ckip_ie_len); *tag++ = MFIE_TYPE_AIRONET; *tag++ = os_ccx_aironet_ie.Length; memcpy(tag, os_ccx_aironet_ie.octet, os_ccx_aironet_ie.Length); tag += os_ccx_aironet_ie.Length; } if (beacon->ccx_rm_enable) { static const u8 ccx_rm_cap_buf[] = {0x00, 0x40, 0x96, 0x01, 0x01, 0x00}; struct octet_string os_ccx_rm_cap; os_ccx_rm_cap.octet = (u8 *)ccx_rm_cap_buf; os_ccx_rm_cap.Length = sizeof(ccx_rm_cap_buf); tag = skb_put(skb, ccxrm_ie_len); *tag++ = MFIE_TYPE_GENERIC; *tag++ = os_ccx_rm_cap.Length; memcpy(tag, os_ccx_rm_cap.octet, os_ccx_rm_cap.Length); tag += os_ccx_rm_cap.Length; } if (beacon->bss_ccx_ver_number >= 2) { u8 ccx_ver_num_buf[] = {0x00, 0x40, 0x96, 0x03, 0x00}; struct octet_string os_ccx_ver_num; ccx_ver_num_buf[4] = beacon->bss_ccx_ver_number; os_ccx_ver_num.octet = ccx_ver_num_buf; os_ccx_ver_num.Length = sizeof(ccx_ver_num_buf); tag = skb_put(skb, cxvernum_ie_len); *tag++ = MFIE_TYPE_GENERIC; *tag++ = os_ccx_ver_num.Length; memcpy(tag, os_ccx_ver_num.octet, os_ccx_ver_num.Length); tag += os_ccx_ver_num.Length; } if (ieee->ht_info->current_ht_support && ieee->ht_info->enable_ht) { if (ieee->ht_info->peer_ht_spec_ver != 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 (pmk_cache_idx >= 0) { tag = skb_put(skb, 18); *tag = 1; *(tag + 1) = 0; memcpy((tag + 2), &ieee->pmkid_list[pmk_cache_idx].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->ht_info->current_ht_support && ieee->ht_info->enable_ht) { if (ieee->ht_info->peer_ht_spec_ver == 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->ht_info->current_rt2rt_aggregation) { 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->link_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->link_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->link_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 ieee80211_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(data, struct rtllib_device, associate_complete_wq); struct rt_pwr_save_ctrl *psc = &ieee->pwr_save_ctrl; netdev_info(ieee->dev, "Associated successfully with %pM\n", ieee->current_network.bssid); 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->rate = 108; netdev_info(ieee->dev, "Using G rates:%d\n", ieee->rate); } else { ieee->rate = 22; ieee->set_wireless_mode(ieee->dev, WIRELESS_MODE_B); netdev_info(ieee->dev, "Using B rates:%d\n", ieee->rate); } if (ieee->ht_info->current_ht_support && ieee->ht_info->enable_ht) { netdev_info(ieee->dev, "Successfully associated, ht enabled\n"); ht_on_assoc_rsp(ieee); } else { netdev_info(ieee->dev, "Successfully associated, ht not enabled(%d, %d)\n", ieee->ht_info->current_ht_support, ieee->ht_info->enable_ht); memset(ieee->dot11ht_oper_rate_set, 0, 16); } ieee->link_detect_info.slot_num = 2 * (1 + ieee->current_network.beacon_interval / 500); if (ieee->link_detect_info.num_recv_bcn_in_period == 0 || ieee->link_detect_info.num_recv_data_in_period == 0) { ieee->link_detect_info.num_recv_bcn_in_period = 1; ieee->link_detect_info.num_recv_data_in_period = 1; } psc->lps_idle_count = 0; ieee->link_change(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->link_state = MAC80211_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); ieee->rtllib_ips_leave(ieee->dev); mutex_lock(&ieee->wx_mutex); rtllib_stop_scan(ieee); ht_set_connect_bw_mode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT); if (ieee->rf_power_state == rf_off) { 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 only if we are not associated * and we are not associating / authenticating */ if (ieee->link_state != MAC80211_NOLINK) return; if ((ieee->iw_mode == IW_MODE_INFRA) && !(net->capability & WLAN_CAPABILITY_ESS)) return; if (ieee->iw_mode == IW_MODE_INFRA) { /* 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->ht_info->enable_ht, 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); ht_reset_iot_setting(ieee->ht_info); ieee->wmm_acm = 0; if (ieee->iw_mode == IW_MODE_INFRA) { /* Join the network for the first time */ ieee->asoc_retry_count = 0; if ((ieee->current_network.qos_data.supported == 1) && ieee->current_network.bssht.bd_support_ht) ht_reset_self_and_save_peer_setting(ieee, &ieee->current_network); else ieee->ht_info->current_ht_support = false; ieee->link_state = RTLLIB_ASSOCIATING; schedule_delayed_work(&ieee->associate_procedure_wq, 0); } else { if (rtllib_is_54g(&ieee->current_network)) { ieee->rate = 108; ieee->set_wireless_mode(ieee->dev, WIRELESS_MODE_G); netdev_info(ieee->dev, "Using G rates\n"); } else { ieee->rate = 22; ieee->set_wireless_mode(ieee->dev, WIRELESS_MODE_B); netdev_info(ieee->dev, "Using B rates\n"); } memset(ieee->dot11ht_oper_rate_set, 0, 16); ieee->link_state = MAC80211_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->link_state != MAC80211_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 int 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 -EINVAL; } *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; } } if (a->status) { netdev_dbg(dev, "auth_parse() failed\n"); return -EINVAL; } 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 == WIRELESS_MODE_G) && (ieee->current_network.mode == WIRELESS_MODE_N_24G) && (ieee->asoc_retry_count++ < (RT_ASOC_RETRY_LIMIT - 1)))) { ieee->ht_info->iot_action |= HT_IOT_ACT_PURE_N_MODE; } else { ieee->asoc_retry_count = 0; } return le16_to_cpu(response_head->status); } 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 *psc = &ieee->pwr_save_ctrl; if (ieee->lps_delay_cnt) { ieee->lps_delay_cnt--; 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->awake_pkt_sent) { psc->lps_awake_intvl = 1; } else { u8 max_period = 5; if (psc->lps_awake_intvl == 0) psc->lps_awake_intvl = 1; psc->lps_awake_intvl = (psc->lps_awake_intvl >= max_period) ? max_period : (psc->lps_awake_intvl + 1); } { u8 lps_awake_intvl_tmp = 0; u8 period = ieee->current_network.dtim_period; u8 count = ieee->current_network.tim.tim_count; if (count == 0) { if (psc->lps_awake_intvl > period) lps_awake_intvl_tmp = period + (psc->lps_awake_intvl - period) - ((psc->lps_awake_intvl - period) % period); else lps_awake_intvl_tmp = psc->lps_awake_intvl; } else { if (psc->lps_awake_intvl > ieee->current_network.tim.tim_count) lps_awake_intvl_tmp = count + (psc->lps_awake_intvl - count) - ((psc->lps_awake_intvl - count) % period); else lps_awake_intvl_tmp = psc->lps_awake_intvl; } *time = ieee->current_network.last_dtim_sta_time + msecs_to_jiffies(ieee->current_network.beacon_interval * lps_awake_intvl_tmp); } } return 1; } static inline void rtllib_sta_ps(struct work_struct *work) { struct rtllib_device *ieee; u64 time; short sleep; unsigned long flags, flags2; ieee = container_of(work, struct rtllib_device, ps_task); spin_lock_irqsave(&ieee->lock, flags); if ((ieee->ps == RTLLIB_PS_DISABLED || ieee->iw_mode != IW_MODE_INFRA || ieee->link_state != MAC80211_LINKED)) { 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->awake_pkt_sent = 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->ht_info->iot_action & 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->ht_info->iot_action & 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->ht_info->iot_action & 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) { u8 *act = skb->data + RTLLIB_3ADDR_LEN; u8 category = 0; category = *act; act++; switch (category) { case ACT_CAT_BA: switch (*act) { case ACT_ADDBAREQ: rtllib_rx_add_ba_req(ieee, skb); break; case ACT_ADDBARSP: rtllib_rx_add_ba_rsp(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 ieee80211_hdr_3addr *header = (struct ieee80211_hdr_3addr *)skb->data; u16 frame_ctl = le16_to_cpu(header->frame_control); netdev_dbg(ieee->dev, "received [RE]ASSOCIATION RESPONSE (%d)\n", WLAN_FC_GET_STYPE(frame_ctl)); if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) && ieee->link_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->link_state = MAC80211_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->ht_info->peer_ht_cap_buf, network->bssht.bd_ht_cap_buf, network->bssht.bd_ht_cap_len); memcpy(ieee->ht_info->peer_ht_info_buf, network->bssht.bd_ht_info_buf, network->bssht.bd_ht_info_len); 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->asoc_retry_count < 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) { int errcode; u8 *challenge; int chlen = 0; bool support_nmode = true, half_support_nmode = 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 %d", errcode); rtllib_associate_abort(ieee); return; } if (ieee->open_wep || !challenge) { ieee->link_state = RTLLIB_ASSOCIATING_AUTHENTICATED; ieee->softmac_stats.rx_auth_rs_ok++; if (!(ieee->ht_info->iot_action & HT_IOT_ACT_PURE_N_MODE)) { if (!ieee->get_nmode_support_by_sec_cfg(ieee->dev)) { if (is_ht_half_nmode_aps(ieee)) { support_nmode = true; half_support_nmode = true; } else { support_nmode = false; half_support_nmode = false; } } } /* Dummy wirless mode setting to avoid encryption issue */ if (support_nmode) { ieee->set_wireless_mode(ieee->dev, ieee->current_network.mode); } else { /*TODO*/ ieee->set_wireless_mode(ieee->dev, WIRELESS_MODE_G); } if ((ieee->current_network.mode == WIRELESS_MODE_N_24G) && half_support_nmode) { netdev_info(ieee->dev, "======>enter half N mode\n"); ieee->half_wireless_n24g_mode = true; } else { ieee->half_wireless_n24g_mode = 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->link_state == RTLLIB_ASSOCIATING_AUTHENTICATING && (ieee->iw_mode == IW_MODE_INFRA)) { netdev_dbg(ieee->dev, "Received authentication response"); rtllib_rx_auth_resp(ieee, skb); } } return 0; } static inline int rtllib_rx_deauth(struct rtllib_device *ieee, struct sk_buff *skb) { struct ieee80211_hdr_3addr *header = (struct ieee80211_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->link_state == MAC80211_LINKED && (ieee->iw_mode == IW_MODE_INFRA)) { frame_ctl = le16_to_cpu(header->frame_control); 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->link_state = RTLLIB_ASSOCIATING; ieee->softmac_stats.reassoc++; ieee->is_roaming = true; ieee->link_detect_info.busy_traffic = false; rtllib_disassociate(ieee); remove_peer_ts(ieee, header->addr2); 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 ieee80211_hdr_3addr *header = (struct ieee80211_hdr_3addr *)skb->data; u16 frame_ctl; if (!ieee->proto_started) return 0; frame_ctl = le16_to_cpu(header->frame_control); switch (WLAN_FC_GET_STYPE(frame_ctl)) { case IEEE80211_STYPE_ASSOC_RESP: case IEEE80211_STYPE_REASSOC_RESP: if (rtllib_rx_assoc_resp(ieee, skb, rx_stats) == 1) return 1; break; case IEEE80211_STYPE_ASSOC_REQ: case IEEE80211_STYPE_REASSOC_REQ: break; case IEEE80211_STYPE_AUTH: rtllib_rx_auth(ieee, skb, rx_stats); break; case IEEE80211_STYPE_DISASSOC: case IEEE80211_STYPE_DEAUTH: rtllib_rx_deauth(ieee, skb); break; case IEEE80211_STYPE_ACTION: 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->multicast) 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++) txq_trans_cond_update(netdev_get_tx_queue(ieee->dev, i)); netif_tx_stop_all_queues(ieee->dev); } void rtllib_wake_all_queues(struct rtllib_device *ieee) { netif_tx_wake_all_queues(ieee->dev); } /* this is called only in user context, with wx_mutex held */ static void rtllib_start_bss(struct rtllib_device *ieee) { unsigned long flags; /* 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->link_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->link_state == MAC80211_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); ieee->link_state = MAC80211_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->link_state != RTLLIB_ASSOCIATING_RETRY) goto exit; /* until we do not set the state to MAC80211_NOLINK * there are no possibility to have someone else trying * to start an association procedure (we get here with * ieee->link_state = RTLLIB_ASSOCIATING). * When we set the state to MAC80211_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->link_state = MAC80211_NOLINK; rtllib_softmac_check_all_nets(ieee); spin_lock_irqsave(&ieee->lock, flags); if (ieee->link_state == MAC80211_NOLINK) rtllib_start_scan(ieee); spin_unlock_irqrestore(&ieee->lock, flags); ieee->beinretry = false; exit: mutex_unlock(&ieee->wx_mutex); } void rtllib_softmac_stop_protocol(struct rtllib_device *ieee) { rtllib_stop_scan_syncro(ieee); mutex_lock(&ieee->wx_mutex); rtllib_stop_protocol(ieee); mutex_unlock(&ieee->wx_mutex); } EXPORT_SYMBOL(rtllib_softmac_stop_protocol); void rtllib_stop_protocol(struct rtllib_device *ieee) { if (!ieee->proto_started) return; ieee->proto_started = 0; ieee->proto_stoppping = 1; ieee->rtllib_ips_leave(ieee->dev); del_timer_sync(&ieee->associate_timer); mutex_unlock(&ieee->wx_mutex); cancel_delayed_work_sync(&ieee->associate_retry_wq); mutex_lock(&ieee->wx_mutex); cancel_delayed_work_sync(&ieee->link_change_wq); rtllib_stop_scan(ieee); if (ieee->link_state <= RTLLIB_ASSOCIATING_AUTHENTICATED) ieee->link_state = MAC80211_NOLINK; if (ieee->link_state == MAC80211_LINKED) { if (ieee->iw_mode == IW_MODE_INFRA) send_disassociation(ieee, 1, WLAN_REASON_DEAUTH_LEAVING); rtllib_disassociate(ieee); } remove_all_ts(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) { 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; 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; } 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 ?? */ switch (ieee->iw_mode) { case IW_MODE_INFRA: rtllib_start_bss(ieee); break; } } int rtllib_softmac_init(struct rtllib_device *ieee) { int i; memset(&ieee->current_network, 0, sizeof(struct rtllib_network)); ieee->link_state = MAC80211_NOLINK; for (i = 0; i < 5; i++) ieee->seq_ctrl[i] = 0; ieee->link_detect_info.slot_index = 0; ieee->link_detect_info.slot_num = 2; ieee->link_detect_info.num_recv_bcn_in_period = 0; ieee->link_detect_info.num_recv_data_in_period = 0; ieee->link_detect_info.num_tx_ok_in_period = 0; ieee->link_detect_info.num_rx_ok_in_period = 0; ieee->link_detect_info.num_rx_unicast_ok_in_period = 0; ieee->is_aggregate_frame = 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->reg_dot11ht_oper_rate_set[0] = 0xff; ieee->reg_dot11ht_oper_rate_set[1] = 0xff; ieee->reg_dot11ht_oper_rate_set[4] = 0x01; ieee->reg_dot11tx_ht_oper_rate_set[0] = 0xff; ieee->reg_dot11tx_ht_oper_rate_set[1] = 0xff; ieee->reg_dot11tx_ht_oper_rate_set[4] = 0x01; ieee->first_ie_in_scan = 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); INIT_DELAYED_WORK(&ieee->link_change_wq, (void *)rtllib_link_change_wq); INIT_WORK(&ieee->associate_complete_wq, (void *)rtllib_associate_complete_wq); INIT_DELAYED_WORK(&ieee->associate_procedure_wq, (void *)rtllib_associate_procedure_wq); INIT_DELAYED_WORK(&ieee->softmac_scan_wq, (void *)rtllib_softmac_scan_wq); INIT_DELAYED_WORK(&ieee->associate_retry_wq, (void *)rtllib_associate_retry_wq); INIT_WORK(&ieee->wx_sync_scan_wq, (void *)rtllib_wx_sync_scan_wq); 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); INIT_WORK(&ieee->ps_task, rtllib_sta_ps); return 0; } void rtllib_softmac_free(struct rtllib_device *ieee) { 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->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); cancel_work_sync(&ieee->ps_task); } static inline struct sk_buff * rtllib_disauth_skb(struct rtllib_network *beacon, struct rtllib_device *ieee, u16 rsn) { 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_control = cpu_to_le16(IEEE80211_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(rsn); return skb; } static inline struct sk_buff * rtllib_disassociate_skb(struct rtllib_network *beacon, struct rtllib_device *ieee, u16 rsn) { 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_control = cpu_to_le16(IEEE80211_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(rsn); return skb; } void send_disassociation(struct rtllib_device *ieee, bool deauth, u16 rsn) { struct rtllib_network *beacon = &ieee->current_network; struct sk_buff *skb; if (deauth) skb = rtllib_disauth_skb(beacon, ieee, rsn); else skb = rtllib_disassociate_skb(beacon, ieee, rsn); 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) || (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_mlme_disassociate_request(struct rtllib_device *rtllib, u8 *addr, u8 rsn) { u8 i; u8 op_mode; remove_peer_ts(rtllib, addr); if (memcmp(rtllib->current_network.bssid, addr, 6) == 0) { rtllib->link_state = MAC80211_NOLINK; for (i = 0; i < 6; i++) rtllib->current_network.bssid[i] = 0x22; op_mode = RT_OP_MODE_NO_LINK; rtllib->op_mode = RT_OP_MODE_NO_LINK; rtllib->set_hw_reg_handler(rtllib->dev, HW_VAR_MEDIA_STATUS, (u8 *)(&op_mode)); rtllib_disassociate(rtllib); rtllib->set_hw_reg_handler(rtllib->dev, HW_VAR_BSSID, rtllib->current_network.bssid); } } static void rtllib_mgnt_disconnect_ap(struct rtllib_device *rtllib, u8 rsn) { bool filter_out_nonassociated_bssid = false; filter_out_nonassociated_bssid = false; rtllib->set_hw_reg_handler(rtllib->dev, HW_VAR_CECHK_BSSID, (u8 *)(&filter_out_nonassociated_bssid)); rtllib_mlme_disassociate_request(rtllib, rtllib->current_network.bssid, rsn); rtllib->link_state = MAC80211_NOLINK; } bool rtllib_mgnt_disconnect(struct rtllib_device *rtllib, u8 rsn) { if (rtllib->ps != RTLLIB_PS_DISABLED) rtllib->sta_wake_up(rtllib->dev); if (rtllib->link_state == MAC80211_LINKED) { if (rtllib->iw_mode == IW_MODE_INFRA) rtllib_mgnt_disconnect_ap(rtllib, rsn); } return true; } EXPORT_SYMBOL(rtllib_mgnt_disconnect); 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->link_state == MAC80211_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);