1 files changed, 635 insertions, 0 deletions

diff --git a/drivers/staging/rtl8192e/rtllib_softmac_wx.c b/drivers/staging/rtl8192e/rtllib_softmac_wx.c
new file mode 100644
index 000000000..1e5ad3b47
--- /dev/null
+++ b/drivers/staging/rtl8192e/rtllib_softmac_wx.c
@@ -0,0 +1,635 @@
+// 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.
+ *
+ * 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 ;-)
+ */
+#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;
+
+	mutex_lock(&ieee->wx_mutex);
+
+	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:
+	mutex_unlock(&ieee->wx_mutex);
+	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);
+
+	mutex_lock(&ieee->wx_mutex);
+	/* 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:
+	mutex_unlock(&ieee->wx_mutex);
+	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);
+	mutex_lock(&ieee->wx_mutex);
+	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:
+	mutex_unlock(&ieee->wx_mutex);
+	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;
+		ieee->SetBWModeHandler(ieee->dev, HT_CHANNEL_WIDTH_20,
+				       HT_EXTCHNL_OFFSET_NO_EXT);
+	}
+
+	rtllib_start_scan_syncro(ieee, 0);
+
+	if (b40M) {
+		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:
+	mutex_unlock(&ieee->wx_mutex);
+
+}
+
+int rtllib_wx_set_scan(struct rtllib_device *ieee, struct iw_request_info *a,
+			     union iwreq_data *wrqu, char *b)
+{
+	int ret = 0;
+
+	mutex_lock(&ieee->wx_mutex);
+
+	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:
+	mutex_unlock(&ieee->wx_mutex);
+	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;
+	short proto_started;
+	unsigned long flags;
+
+	rtllib_stop_scan_syncro(ieee);
+	mutex_lock(&ieee->wx_mutex);
+
+	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;
+	}
+
+	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:
+	mutex_unlock(&ieee->wx_mutex);
+	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;
+
+	mutex_lock(&ieee->wx_mutex);
+
+	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);
+	}
+
+	mutex_unlock(&ieee->wx_mutex);
+
+	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)
+{
+	const char *b = ieee->modulation & RTLLIB_CCK_MODULATION ? "b" : "";
+	const char *g = ieee->modulation & RTLLIB_OFDM_MODULATION ? "g" : "";
+	const char *n = ieee->mode & (IEEE_N_24G | IEEE_N_5G) ? "n" : "";
+
+	scnprintf(wrqu->name, sizeof(wrqu->name), "802.11%s%s%s", b, g, 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;
+	}
+
+	mutex_lock(&ieee->wx_mutex);
+
+	if (wrqu->power.disabled) {
+		ieee->ps = RTLLIB_PS_DISABLED;
+		goto exit;
+	}
+	if (wrqu->power.flags & IW_POWER_TIMEOUT) {
+		ieee->ps_timeout = wrqu->power.value / 1000;
+	}
+
+	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:
+	mutex_unlock(&ieee->wx_mutex);
+	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)
+{
+	mutex_lock(&ieee->wx_mutex);
+
+	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:
+	mutex_unlock(&ieee->wx_mutex);
+	return 0;
+
+}
+EXPORT_SYMBOL(rtllib_wx_get_power);