| /* 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. |
| * |
| * Some pieces of code might be stolen from ipw2100 driver |
| * copyright of who own it's copyright ;-) |
| * |
| * PS wx handler mostly stolen from hostap, copyright who |
| * own it's copyright ;-) |
| * |
| * released under the GPL |
| */ |
| |
| |
| #include <linux/etherdevice.h> |
| |
| #include "rtllib.h" |
| #include "dot11d.h" |
| /* FIXME: add A freqs */ |
| |
| const long rtllib_wlan_frequencies[] = { |
| 2412, 2417, 2422, 2427, |
| 2432, 2437, 2442, 2447, |
| 2452, 2457, 2462, 2467, |
| 2472, 2484 |
| }; |
| EXPORT_SYMBOL(rtllib_wlan_frequencies); |
| |
| |
| int rtllib_wx_set_freq(struct rtllib_device *ieee, struct iw_request_info *a, |
| union iwreq_data *wrqu, char *b) |
| { |
| int ret; |
| struct iw_freq *fwrq = &wrqu->freq; |
| |
| down(&ieee->wx_sem); |
| |
| if (ieee->iw_mode == IW_MODE_INFRA) { |
| ret = 0; |
| goto out; |
| } |
| |
| /* if setting by freq convert to channel */ |
| if (fwrq->e == 1) { |
| if ((fwrq->m >= (int) 2.412e8 && |
| fwrq->m <= (int) 2.487e8)) { |
| int f = fwrq->m / 100000; |
| int c = 0; |
| |
| while ((c < 14) && (f != rtllib_wlan_frequencies[c])) |
| c++; |
| |
| /* hack to fall through */ |
| fwrq->e = 0; |
| fwrq->m = c + 1; |
| } |
| } |
| |
| if (fwrq->e > 0 || fwrq->m > 14 || fwrq->m < 1) { |
| ret = -EOPNOTSUPP; |
| goto out; |
| |
| } else { /* Set the channel */ |
| |
| if (ieee->active_channel_map[fwrq->m] != 1) { |
| ret = -EINVAL; |
| goto out; |
| } |
| ieee->current_network.channel = fwrq->m; |
| ieee->set_chan(ieee->dev, ieee->current_network.channel); |
| |
| if (ieee->iw_mode == IW_MODE_ADHOC || |
| ieee->iw_mode == IW_MODE_MASTER) |
| if (ieee->state == RTLLIB_LINKED) { |
| rtllib_stop_send_beacons(ieee); |
| rtllib_start_send_beacons(ieee); |
| } |
| } |
| |
| ret = 0; |
| out: |
| up(&ieee->wx_sem); |
| return ret; |
| } |
| EXPORT_SYMBOL(rtllib_wx_set_freq); |
| |
| |
| int rtllib_wx_get_freq(struct rtllib_device *ieee, |
| struct iw_request_info *a, |
| union iwreq_data *wrqu, char *b) |
| { |
| struct iw_freq *fwrq = &wrqu->freq; |
| |
| if (ieee->current_network.channel == 0) |
| return -1; |
| fwrq->m = rtllib_wlan_frequencies[ieee->current_network.channel-1] * |
| 100000; |
| fwrq->e = 1; |
| return 0; |
| } |
| EXPORT_SYMBOL(rtllib_wx_get_freq); |
| |
| int rtllib_wx_get_wap(struct rtllib_device *ieee, |
| struct iw_request_info *info, |
| union iwreq_data *wrqu, char *extra) |
| { |
| unsigned long flags; |
| |
| wrqu->ap_addr.sa_family = ARPHRD_ETHER; |
| |
| if (ieee->iw_mode == IW_MODE_MONITOR) |
| return -1; |
| |
| /* We want avoid to give to the user inconsistent infos*/ |
| spin_lock_irqsave(&ieee->lock, flags); |
| |
| if (ieee->state != RTLLIB_LINKED && |
| ieee->state != RTLLIB_LINKED_SCANNING && |
| ieee->wap_set == 0) |
| |
| eth_zero_addr(wrqu->ap_addr.sa_data); |
| else |
| memcpy(wrqu->ap_addr.sa_data, |
| ieee->current_network.bssid, ETH_ALEN); |
| |
| spin_unlock_irqrestore(&ieee->lock, flags); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL(rtllib_wx_get_wap); |
| |
| |
| int rtllib_wx_set_wap(struct rtllib_device *ieee, |
| struct iw_request_info *info, |
| union iwreq_data *awrq, |
| char *extra) |
| { |
| |
| int ret = 0; |
| unsigned long flags; |
| |
| short ifup = ieee->proto_started; |
| struct sockaddr *temp = (struct sockaddr *)awrq; |
| |
| rtllib_stop_scan_syncro(ieee); |
| |
| down(&ieee->wx_sem); |
| /* use ifconfig hw ether */ |
| if (ieee->iw_mode == IW_MODE_MASTER) { |
| ret = -1; |
| goto out; |
| } |
| |
| if (temp->sa_family != ARPHRD_ETHER) { |
| ret = -EINVAL; |
| goto out; |
| } |
| |
| if (is_zero_ether_addr(temp->sa_data)) { |
| spin_lock_irqsave(&ieee->lock, flags); |
| ether_addr_copy(ieee->current_network.bssid, temp->sa_data); |
| ieee->wap_set = 0; |
| spin_unlock_irqrestore(&ieee->lock, flags); |
| ret = -1; |
| goto out; |
| } |
| |
| |
| if (ifup) |
| rtllib_stop_protocol(ieee, true); |
| |
| /* just to avoid to give inconsistent infos in the |
| * get wx method. not really needed otherwise |
| */ |
| spin_lock_irqsave(&ieee->lock, flags); |
| |
| ieee->cannot_notify = false; |
| ether_addr_copy(ieee->current_network.bssid, temp->sa_data); |
| ieee->wap_set = !is_zero_ether_addr(temp->sa_data); |
| |
| spin_unlock_irqrestore(&ieee->lock, flags); |
| |
| if (ifup) |
| rtllib_start_protocol(ieee); |
| out: |
| up(&ieee->wx_sem); |
| return ret; |
| } |
| EXPORT_SYMBOL(rtllib_wx_set_wap); |
| |
| int rtllib_wx_get_essid(struct rtllib_device *ieee, struct iw_request_info *a, |
| union iwreq_data *wrqu, char *b) |
| { |
| int len, ret = 0; |
| unsigned long flags; |
| |
| if (ieee->iw_mode == IW_MODE_MONITOR) |
| return -1; |
| |
| /* We want avoid to give to the user inconsistent infos*/ |
| spin_lock_irqsave(&ieee->lock, flags); |
| |
| if (ieee->current_network.ssid[0] == '\0' || |
| ieee->current_network.ssid_len == 0) { |
| ret = -1; |
| goto out; |
| } |
| |
| if (ieee->state != RTLLIB_LINKED && |
| ieee->state != RTLLIB_LINKED_SCANNING && |
| ieee->ssid_set == 0) { |
| ret = -1; |
| goto out; |
| } |
| len = ieee->current_network.ssid_len; |
| wrqu->essid.length = len; |
| strncpy(b, ieee->current_network.ssid, len); |
| wrqu->essid.flags = 1; |
| |
| out: |
| spin_unlock_irqrestore(&ieee->lock, flags); |
| |
| return ret; |
| |
| } |
| EXPORT_SYMBOL(rtllib_wx_get_essid); |
| |
| int rtllib_wx_set_rate(struct rtllib_device *ieee, |
| struct iw_request_info *info, |
| union iwreq_data *wrqu, char *extra) |
| { |
| |
| u32 target_rate = wrqu->bitrate.value; |
| |
| ieee->rate = target_rate/100000; |
| return 0; |
| } |
| EXPORT_SYMBOL(rtllib_wx_set_rate); |
| |
| int rtllib_wx_get_rate(struct rtllib_device *ieee, |
| struct iw_request_info *info, |
| union iwreq_data *wrqu, char *extra) |
| { |
| u32 tmp_rate; |
| |
| tmp_rate = TxCountToDataRate(ieee, |
| ieee->softmac_stats.CurrentShowTxate); |
| wrqu->bitrate.value = tmp_rate * 500000; |
| |
| return 0; |
| } |
| EXPORT_SYMBOL(rtllib_wx_get_rate); |
| |
| |
| int rtllib_wx_set_rts(struct rtllib_device *ieee, |
| struct iw_request_info *info, |
| union iwreq_data *wrqu, char *extra) |
| { |
| if (wrqu->rts.disabled || !wrqu->rts.fixed) |
| ieee->rts = DEFAULT_RTS_THRESHOLD; |
| else { |
| if (wrqu->rts.value < MIN_RTS_THRESHOLD || |
| wrqu->rts.value > MAX_RTS_THRESHOLD) |
| return -EINVAL; |
| ieee->rts = wrqu->rts.value; |
| } |
| return 0; |
| } |
| EXPORT_SYMBOL(rtllib_wx_set_rts); |
| |
| int rtllib_wx_get_rts(struct rtllib_device *ieee, |
| struct iw_request_info *info, |
| union iwreq_data *wrqu, char *extra) |
| { |
| wrqu->rts.value = ieee->rts; |
| wrqu->rts.fixed = 0; /* no auto select */ |
| wrqu->rts.disabled = (wrqu->rts.value == DEFAULT_RTS_THRESHOLD); |
| return 0; |
| } |
| EXPORT_SYMBOL(rtllib_wx_get_rts); |
| |
| int rtllib_wx_set_mode(struct rtllib_device *ieee, struct iw_request_info *a, |
| union iwreq_data *wrqu, char *b) |
| { |
| int set_mode_status = 0; |
| |
| rtllib_stop_scan_syncro(ieee); |
| down(&ieee->wx_sem); |
| switch (wrqu->mode) { |
| case IW_MODE_MONITOR: |
| case IW_MODE_ADHOC: |
| case IW_MODE_INFRA: |
| break; |
| case IW_MODE_AUTO: |
| wrqu->mode = IW_MODE_INFRA; |
| break; |
| default: |
| set_mode_status = -EINVAL; |
| goto out; |
| } |
| |
| if (wrqu->mode == ieee->iw_mode) |
| goto out; |
| |
| if (wrqu->mode == IW_MODE_MONITOR) { |
| ieee->dev->type = ARPHRD_IEEE80211; |
| rtllib_EnableNetMonitorMode(ieee->dev, false); |
| } else { |
| ieee->dev->type = ARPHRD_ETHER; |
| if (ieee->iw_mode == IW_MODE_MONITOR) |
| rtllib_DisableNetMonitorMode(ieee->dev, false); |
| } |
| |
| if (!ieee->proto_started) { |
| ieee->iw_mode = wrqu->mode; |
| } else { |
| rtllib_stop_protocol(ieee, true); |
| ieee->iw_mode = wrqu->mode; |
| rtllib_start_protocol(ieee); |
| } |
| |
| out: |
| up(&ieee->wx_sem); |
| return set_mode_status; |
| } |
| EXPORT_SYMBOL(rtllib_wx_set_mode); |
| |
| void rtllib_wx_sync_scan_wq(void *data) |
| { |
| struct rtllib_device *ieee = container_of_work_rsl(data, |
| struct rtllib_device, wx_sync_scan_wq); |
| short chan; |
| enum ht_extchnl_offset chan_offset = 0; |
| enum ht_channel_width bandwidth = 0; |
| int b40M = 0; |
| |
| if (!(ieee->softmac_features & IEEE_SOFTMAC_SCAN)) { |
| rtllib_start_scan_syncro(ieee, 0); |
| goto out; |
| } |
| |
| chan = ieee->current_network.channel; |
| |
| if (ieee->LeisurePSLeave) |
| ieee->LeisurePSLeave(ieee->dev); |
| /* notify AP to be in PS mode */ |
| rtllib_sta_ps_send_null_frame(ieee, 1); |
| rtllib_sta_ps_send_null_frame(ieee, 1); |
| |
| rtllib_stop_all_queues(ieee); |
| |
| if (ieee->data_hard_stop) |
| ieee->data_hard_stop(ieee->dev); |
| rtllib_stop_send_beacons(ieee); |
| ieee->state = RTLLIB_LINKED_SCANNING; |
| ieee->link_change(ieee->dev); |
| /* wait for ps packet to be kicked out successfully */ |
| msleep(50); |
| |
| if (ieee->ScanOperationBackupHandler) |
| ieee->ScanOperationBackupHandler(ieee->dev, SCAN_OPT_BACKUP); |
| |
| if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT && |
| ieee->pHTInfo->bCurBW40MHz) { |
| b40M = 1; |
| chan_offset = ieee->pHTInfo->CurSTAExtChnlOffset; |
| bandwidth = (enum ht_channel_width)ieee->pHTInfo->bCurBW40MHz; |
| RT_TRACE(COMP_DBG, "Scan in 40M, force to 20M first:%d, %d\n", |
| chan_offset, bandwidth); |
| ieee->SetBWModeHandler(ieee->dev, HT_CHANNEL_WIDTH_20, |
| HT_EXTCHNL_OFFSET_NO_EXT); |
| } |
| |
| rtllib_start_scan_syncro(ieee, 0); |
| |
| if (b40M) { |
| RT_TRACE(COMP_DBG, "Scan in 20M, back to 40M\n"); |
| if (chan_offset == HT_EXTCHNL_OFFSET_UPPER) |
| ieee->set_chan(ieee->dev, chan + 2); |
| else if (chan_offset == HT_EXTCHNL_OFFSET_LOWER) |
| ieee->set_chan(ieee->dev, chan - 2); |
| else |
| ieee->set_chan(ieee->dev, chan); |
| ieee->SetBWModeHandler(ieee->dev, bandwidth, chan_offset); |
| } else { |
| ieee->set_chan(ieee->dev, chan); |
| } |
| |
| if (ieee->ScanOperationBackupHandler) |
| ieee->ScanOperationBackupHandler(ieee->dev, SCAN_OPT_RESTORE); |
| |
| ieee->state = RTLLIB_LINKED; |
| ieee->link_change(ieee->dev); |
| |
| /* Notify AP that I wake up again */ |
| rtllib_sta_ps_send_null_frame(ieee, 0); |
| |
| if (ieee->LinkDetectInfo.NumRecvBcnInPeriod == 0 || |
| ieee->LinkDetectInfo.NumRecvDataInPeriod == 0) { |
| ieee->LinkDetectInfo.NumRecvBcnInPeriod = 1; |
| ieee->LinkDetectInfo.NumRecvDataInPeriod = 1; |
| } |
| |
| if (ieee->data_hard_resume) |
| ieee->data_hard_resume(ieee->dev); |
| |
| if (ieee->iw_mode == IW_MODE_ADHOC || ieee->iw_mode == IW_MODE_MASTER) |
| rtllib_start_send_beacons(ieee); |
| |
| rtllib_wake_all_queues(ieee); |
| |
| out: |
| up(&ieee->wx_sem); |
| |
| } |
| |
| int rtllib_wx_set_scan(struct rtllib_device *ieee, struct iw_request_info *a, |
| union iwreq_data *wrqu, char *b) |
| { |
| int ret = 0; |
| |
| down(&ieee->wx_sem); |
| |
| if (ieee->iw_mode == IW_MODE_MONITOR || !(ieee->proto_started)) { |
| ret = -1; |
| goto out; |
| } |
| |
| if (ieee->state == RTLLIB_LINKED) { |
| schedule_work(&ieee->wx_sync_scan_wq); |
| /* intentionally forget to up sem */ |
| return 0; |
| } |
| |
| out: |
| up(&ieee->wx_sem); |
| return ret; |
| } |
| EXPORT_SYMBOL(rtllib_wx_set_scan); |
| |
| int rtllib_wx_set_essid(struct rtllib_device *ieee, |
| struct iw_request_info *a, |
| union iwreq_data *wrqu, char *extra) |
| { |
| |
| int ret = 0, len, i; |
| short proto_started; |
| unsigned long flags; |
| |
| rtllib_stop_scan_syncro(ieee); |
| down(&ieee->wx_sem); |
| |
| proto_started = ieee->proto_started; |
| |
| len = min_t(__u16, wrqu->essid.length, IW_ESSID_MAX_SIZE); |
| |
| if (ieee->iw_mode == IW_MODE_MONITOR) { |
| ret = -1; |
| goto out; |
| } |
| |
| for (i = 0; i < len; i++) { |
| if (extra[i] < 0) { |
| ret = -1; |
| goto out; |
| } |
| } |
| |
| if (proto_started) |
| rtllib_stop_protocol(ieee, true); |
| |
| |
| /* this is just to be sure that the GET wx callback |
| * has consistent infos. not needed otherwise |
| */ |
| spin_lock_irqsave(&ieee->lock, flags); |
| |
| if (wrqu->essid.flags && wrqu->essid.length) { |
| strncpy(ieee->current_network.ssid, extra, len); |
| ieee->current_network.ssid_len = len; |
| ieee->cannot_notify = false; |
| ieee->ssid_set = 1; |
| } else { |
| ieee->ssid_set = 0; |
| ieee->current_network.ssid[0] = '\0'; |
| ieee->current_network.ssid_len = 0; |
| } |
| spin_unlock_irqrestore(&ieee->lock, flags); |
| |
| if (proto_started) |
| rtllib_start_protocol(ieee); |
| out: |
| up(&ieee->wx_sem); |
| return ret; |
| } |
| EXPORT_SYMBOL(rtllib_wx_set_essid); |
| |
| int rtllib_wx_get_mode(struct rtllib_device *ieee, struct iw_request_info *a, |
| union iwreq_data *wrqu, char *b) |
| { |
| wrqu->mode = ieee->iw_mode; |
| return 0; |
| } |
| EXPORT_SYMBOL(rtllib_wx_get_mode); |
| |
| int rtllib_wx_set_rawtx(struct rtllib_device *ieee, |
| struct iw_request_info *info, |
| union iwreq_data *wrqu, char *extra) |
| { |
| |
| int *parms = (int *)extra; |
| int enable = (parms[0] > 0); |
| short prev = ieee->raw_tx; |
| |
| down(&ieee->wx_sem); |
| |
| if (enable) |
| ieee->raw_tx = 1; |
| else |
| ieee->raw_tx = 0; |
| |
| netdev_info(ieee->dev, "raw TX is %s\n", |
| ieee->raw_tx ? "enabled" : "disabled"); |
| |
| if (ieee->iw_mode == IW_MODE_MONITOR) { |
| if (prev == 0 && ieee->raw_tx) { |
| if (ieee->data_hard_resume) |
| ieee->data_hard_resume(ieee->dev); |
| |
| netif_carrier_on(ieee->dev); |
| } |
| |
| if (prev && ieee->raw_tx == 1) |
| netif_carrier_off(ieee->dev); |
| } |
| |
| up(&ieee->wx_sem); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL(rtllib_wx_set_rawtx); |
| |
| int rtllib_wx_get_name(struct rtllib_device *ieee, |
| struct iw_request_info *info, |
| union iwreq_data *wrqu, char *extra) |
| { |
| strcpy(wrqu->name, "802.11"); |
| |
| if (ieee->modulation & RTLLIB_CCK_MODULATION) |
| strcat(wrqu->name, "b"); |
| if (ieee->modulation & RTLLIB_OFDM_MODULATION) |
| strcat(wrqu->name, "g"); |
| if (ieee->mode & (IEEE_N_24G | IEEE_N_5G)) |
| strcat(wrqu->name, "n"); |
| return 0; |
| } |
| EXPORT_SYMBOL(rtllib_wx_get_name); |
| |
| |
| /* this is mostly stolen from hostap */ |
| int rtllib_wx_set_power(struct rtllib_device *ieee, |
| struct iw_request_info *info, |
| union iwreq_data *wrqu, char *extra) |
| { |
| int ret = 0; |
| |
| if ((!ieee->sta_wake_up) || |
| (!ieee->enter_sleep_state) || |
| (!ieee->ps_is_queue_empty)) { |
| netdev_warn(ieee->dev, |
| "%s(): PS mode is tried to be use but driver missed a callback\n", |
| __func__); |
| return -1; |
| } |
| |
| down(&ieee->wx_sem); |
| |
| if (wrqu->power.disabled) { |
| RT_TRACE(COMP_DBG, "===>%s(): power disable\n", __func__); |
| ieee->ps = RTLLIB_PS_DISABLED; |
| goto exit; |
| } |
| if (wrqu->power.flags & IW_POWER_TIMEOUT) { |
| ieee->ps_timeout = wrqu->power.value / 1000; |
| RT_TRACE(COMP_DBG, "===>%s():ps_timeout is %d\n", __func__, |
| ieee->ps_timeout); |
| } |
| |
| if (wrqu->power.flags & IW_POWER_PERIOD) |
| ieee->ps_period = wrqu->power.value / 1000; |
| |
| switch (wrqu->power.flags & IW_POWER_MODE) { |
| case IW_POWER_UNICAST_R: |
| ieee->ps = RTLLIB_PS_UNICAST; |
| break; |
| case IW_POWER_MULTICAST_R: |
| ieee->ps = RTLLIB_PS_MBCAST; |
| break; |
| case IW_POWER_ALL_R: |
| ieee->ps = RTLLIB_PS_UNICAST | RTLLIB_PS_MBCAST; |
| break; |
| |
| case IW_POWER_ON: |
| break; |
| |
| default: |
| ret = -EINVAL; |
| goto exit; |
| |
| } |
| exit: |
| up(&ieee->wx_sem); |
| return ret; |
| |
| } |
| EXPORT_SYMBOL(rtllib_wx_set_power); |
| |
| /* this is stolen from hostap */ |
| int rtllib_wx_get_power(struct rtllib_device *ieee, |
| struct iw_request_info *info, |
| union iwreq_data *wrqu, char *extra) |
| { |
| down(&ieee->wx_sem); |
| |
| if (ieee->ps == RTLLIB_PS_DISABLED) { |
| wrqu->power.disabled = 1; |
| goto exit; |
| } |
| |
| wrqu->power.disabled = 0; |
| |
| if ((wrqu->power.flags & IW_POWER_TYPE) == IW_POWER_TIMEOUT) { |
| wrqu->power.flags = IW_POWER_TIMEOUT; |
| wrqu->power.value = ieee->ps_timeout * 1000; |
| } else { |
| wrqu->power.flags = IW_POWER_PERIOD; |
| wrqu->power.value = ieee->ps_period * 1000; |
| } |
| |
| if ((ieee->ps & (RTLLIB_PS_MBCAST | RTLLIB_PS_UNICAST)) == |
| (RTLLIB_PS_MBCAST | RTLLIB_PS_UNICAST)) |
| wrqu->power.flags |= IW_POWER_ALL_R; |
| else if (ieee->ps & RTLLIB_PS_MBCAST) |
| wrqu->power.flags |= IW_POWER_MULTICAST_R; |
| else |
| wrqu->power.flags |= IW_POWER_UNICAST_R; |
| |
| exit: |
| up(&ieee->wx_sem); |
| return 0; |
| |
| } |
| EXPORT_SYMBOL(rtllib_wx_get_power); |