// 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;
|
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:
|
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, i;
|
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;
|
}
|
|
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:
|
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)
|
{
|
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;
|
}
|
|
mutex_lock(&ieee->wx_mutex);
|
|
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:
|
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);
|
