- 根目录:
- drivers
- staging
- rtl8192e
- rtllib_softmac.c
/* IEEE 802.11 SoftMAC layer
* Copyright (c) 2005 Andrea Merello <andreamrl@tiscali.it>
*
* 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.
*
* released under the GPL
*/
#include "rtllib.h"
#include <linux/random.h>
#include <linux/delay.h>
#include <linux/uaccess.h>
#include "dot11d.h"
short rtllib_is_54g(struct rtllib_network *net)
{
return (net->rates_ex_len > 0) || (net->rates_len > 4);
}
short rtllib_is_shortslot(const struct rtllib_network *net)
{
return net->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME;
}
/* returns the total length needed for pleacing the RATE MFIE
* tag and the EXTENDED RATE MFIE tag if needed.
* It encludes two bytes per tag for the tag itself and its len
*/
static unsigned int rtllib_MFIE_rate_len(struct rtllib_device *ieee)
{
unsigned int rate_len = 0;
if (ieee->modulation & RTLLIB_CCK_MODULATION)
rate_len = RTLLIB_CCK_RATE_LEN + 2;
if (ieee->modulation & RTLLIB_OFDM_MODULATION)
rate_len += RTLLIB_OFDM_RATE_LEN + 2;
return rate_len;
}
/* pleace the MFIE rate, tag to the memory (double) poined.
* Then it updates the pointer so that
* it points after the new MFIE tag added.
*/
static void rtllib_MFIE_Brate(struct rtllib_device *ieee, u8 **tag_p)
{
u8 *tag = *tag_p;
if (ieee->modulation & RTLLIB_CCK_MODULATION) {
*tag++ = MFIE_TYPE_RATES;
*tag++ = 4;
*tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_1MB;
*tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_2MB;
*tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_5MB;
*tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_11MB;
}
/* We may add an option for custom rates that specific HW
* might support */
*tag_p = tag;
}
static void rtllib_MFIE_Grate(struct rtllib_device *ieee, u8 **tag_p)
{
u8 *tag = *tag_p;
if (ieee->modulation & RTLLIB_OFDM_MODULATION) {
*tag++ = MFIE_TYPE_RATES_EX;
*tag++ = 8;
*tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_6MB;
*tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_9MB;
*tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_12MB;
*tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_18MB;
*tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_24MB;
*tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_36MB;
*tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_48MB;
*tag++ = RTLLIB_BASIC_RATE_MASK | RTLLIB_OFDM_RATE_54MB;
}
/* We may add an option for custom rates that specific HW might
* support */
*tag_p = tag;
}
static void rtllib_WMM_Info(struct rtllib_device *ieee, u8 **tag_p)
{
u8 *tag = *tag_p;
*tag++ = MFIE_TYPE_GENERIC;
*tag++ = 7;
*tag++ = 0x00;
*tag++ = 0x50;
*tag++ = 0xf2;
*tag++ = 0x02;
*tag++ = 0x00;
*tag++ = 0x01;
*tag++ = MAX_SP_Len;
*tag_p = tag;
}
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;
printk(KERN_ALERT "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 struct sk_buff *dequeue_mgmt(struct rtllib_device *ieee)
{
struct sk_buff *ret;
if (ieee->mgmt_queue_tail == ieee->mgmt_queue_head)
return NULL;
ret = ieee->mgmt_queue_ring[ieee->mgmt_queue_tail];
ieee->mgmt_queue_tail =
(ieee->mgmt_queue_tail+1) % MGMT_QUEUE_NUM;
return ret;
}
static void init_mgmt_queue(struct rtllib_device *ieee)
{
ieee->mgmt_queue_tail = ieee->mgmt_queue_head = 0;
}
u8
MgntQuery_TxRateExcludeCCKRates(struct rtllib_device *ieee)
{
u16 i;
u8 QueryRate = 0;
u8 BasicRate;
for (i = 0; i < ieee->current_network.rates_len; i++) {
BasicRate = ieee->current_network.rates[i]&0x7F;
if (!rtllib_is_cck_rate(BasicRate)) {
if (QueryRate == 0) {
QueryRate = BasicRate;
} else {
if (BasicRate < QueryRate)
QueryRate = BasicRate;
}
}
}
if (QueryRate == 0) {
QueryRate = 12;
printk(KERN_INFO "No BasicRate found!!\n");
}
return QueryRate;
}
u8 MgntQuery_MgntFrameTxRate(struct rtllib_device *ieee)
{
struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
u8 rate;
if (pHTInfo->IOTAction & HT_IOT_ACT_MGNT_USE_CCK_6M)
rate = 0x0c;
else
rate = ieee->basic_rate & 0x7f;
if (rate == 0) {
if (ieee->mode == IEEE_A ||
ieee->mode == IEEE_N_5G ||
(ieee->mode == IEEE_N_24G && !pHTInfo->bCurSuppCCK))
rate = 0x0c;
else
rate = 0x02;
}
return rate;
}
inline void softmac_mgmt_xmit(struct sk_buff *skb, struct rtllib_device *ieee)
{
unsigned long flags;
short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE;
struct rtllib_hdr_3addr *header =
(struct rtllib_hdr_3addr *) skb->data;
struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + 8);
spin_lock_irqsave(&ieee->lock, flags);
/* called with 2nd param 0, no mgmt lock required */
rtllib_sta_wakeup(ieee, 0);
if (header->frame_ctl == RTLLIB_STYPE_BEACON)
tcb_desc->queue_index = BEACON_QUEUE;
else
tcb_desc->queue_index = MGNT_QUEUE;
if (ieee->disable_mgnt_queue)
tcb_desc->queue_index = HIGH_QUEUE;
tcb_desc->data_rate = MgntQuery_MgntFrameTxRate(ieee);
tcb_desc->RATRIndex = 7;
tcb_desc->bTxDisableRateFallBack = 1;
tcb_desc->bTxUseDriverAssingedRate = 1;
if (single) {
if (ieee->queue_stop) {
enqueue_mgmt(ieee, skb);
} else {
header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0]<<4);
if (ieee->seq_ctrl[0] == 0xFFF)
ieee->seq_ctrl[0] = 0;
else
ieee->seq_ctrl[0]++;
/* avoid watchdog triggers */
ieee->softmac_data_hard_start_xmit(skb, ieee->dev,
ieee->basic_rate);
}
spin_unlock_irqrestore(&ieee->lock, flags);
} else {
spin_unlock_irqrestore(&ieee->lock, flags);
spin_lock_irqsave(&ieee->mgmt_tx_lock, flags);
header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
if (ieee->seq_ctrl[0] == 0xFFF)
ieee->seq_ctrl[0] = 0;
else
ieee->seq_ctrl[0]++;
/* check wether 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]) != 0) ||
(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.
* */
printk(KERN_INFO "%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);
}
}
inline void softmac_ps_mgmt_xmit(struct sk_buff *skb,
struct rtllib_device *ieee)
{
short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE;
struct rtllib_hdr_3addr *header =
(struct rtllib_hdr_3addr *) skb->data;
u16 fc, type, stype;
struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + 8);
fc = header->frame_ctl;
type = WLAN_FC_GET_TYPE(fc);
stype = WLAN_FC_GET_STYPE(fc);
if (stype != RTLLIB_STYPE_PSPOLL)
tcb_desc->queue_index = MGNT_QUEUE;
else
tcb_desc->queue_index = HIGH_QUEUE;
if (ieee->disable_mgnt_queue)
tcb_desc->queue_index = HIGH_QUEUE;
tcb_desc->data_rate = MgntQuery_MgntFrameTxRate(ieee);
tcb_desc->RATRIndex = 7;
tcb_desc->bTxDisableRateFallBack = 1;
tcb_desc->bTxUseDriverAssingedRate = 1;
if (single) {
if (type != RTLLIB_FTYPE_CTL) {
header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
if (ieee->seq_ctrl[0] == 0xFFF)
ieee->seq_ctrl[0] = 0;
else
ieee->seq_ctrl[0]++;
}
/* avoid watchdog triggers */
ieee->softmac_data_hard_start_xmit(skb, ieee->dev,
ieee->basic_rate);
} else {
if (type != RTLLIB_FTYPE_CTL) {
header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
if (ieee->seq_ctrl[0] == 0xFFF)
ieee->seq_ctrl[0] = 0;
else
ieee->seq_ctrl[0]++;
}
ieee->softmac_hard_start_xmit(skb, ieee->dev);
}
}
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 = (struct rtllib_probe_request *) skb_put(skb,
sizeof(struct rtllib_probe_request));
req->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_PROBE_REQ);
req->header.duration_id = 0;
memset(req->header.addr1, 0xff, ETH_ALEN);
memcpy(req->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
memset(req->header.addr3, 0xff, ETH_ALEN);
tag = (u8 *) 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;
}
struct sk_buff *rtllib_get_beacon_(struct rtllib_device *ieee);
static void rtllib_send_beacon(struct rtllib_device *ieee)
{
struct sk_buff *skb;
if (!ieee->ieee_up)
return;
skb = rtllib_get_beacon_(ieee);
if (skb) {
softmac_mgmt_xmit(skb, ieee);
ieee->softmac_stats.tx_beacons++;
}
if (ieee->beacon_txing && ieee->ieee_up)
mod_timer(&ieee->beacon_timer, jiffies +
(MSECS(ieee->current_network.beacon_interval - 5)));
}
static void rtllib_send_beacon_cb(unsigned long _ieee)
{
struct rtllib_device *ieee =
(struct rtllib_device *) _ieee;
unsigned long flags;
spin_lock_irqsave(&ieee->beacon_lock, flags);
rtllib_send_beacon(ieee);
spin_unlock_irqrestore(&ieee->beacon_lock, flags);
}
/*
* Description:
* Enable network monitor mode, all rx packets will be received.
*/
void rtllib_EnableNetMonitorMode(struct net_device *dev,
bool bInitState)
{
struct rtllib_device *ieee = netdev_priv_rsl(dev);
printk(KERN_INFO "========>Enter Monitor Mode\n");
ieee->AllowAllDestAddrHandler(dev, true, !bInitState);
}
/*
* Description:
* Disable network network monitor mode, only packets destinated to
* us will be received.
*/
void rtllib_DisableNetMonitorMode(struct net_device *dev,
bool bInitState)
{
struct rtllib_device *ieee = netdev_priv_rsl(dev);
printk(KERN_INFO "========>Exit Monitor Mode\n");
ieee->AllowAllDestAddrHandler(dev, false, !bInitState);
}
/*
* Description:
* This enables the specialized promiscuous mode required by Intel.
* In this mode, Intel intends to hear traffics from/to other STAs in the
* same BSS. Therefore we don't have to disable checking BSSID and we only need
* to allow all dest. BUT: if we enable checking BSSID then we can't recv
* packets from other STA.
*/
void rtllib_EnableIntelPromiscuousMode(struct net_device *dev,
bool bInitState)
{
bool bFilterOutNonAssociatedBSSID = false;
struct rtllib_device *ieee = netdev_priv_rsl(dev);
printk(KERN_INFO "========>Enter Intel Promiscuous Mode\n");
ieee->AllowAllDestAddrHandler(dev, true, !bInitState);
ieee->SetHwRegHandler(dev, HW_VAR_CECHK_BSSID,
(u8 *)&bFilterOutNonAssociatedBSSID);
ieee->bNetPromiscuousMode = true;
}
EXPORT_SYMBOL(rtllib_EnableIntelPromiscuousMode);
/*
* Description:
* This disables the specialized promiscuous mode required by Intel.
* See MgntEnableIntelPromiscuousMode for detail.
*/
void rtllib_DisableIntelPromiscuousMode(struct net_device *dev,
bool bInitState)
{
bool bFilterOutNonAssociatedBSSID = true;
struct rtllib_device *ieee = netdev_priv_rsl(dev);
printk(KERN_INFO "========>Exit Intel Promiscuous Mode\n");
ieee->AllowAllDestAddrHandler(dev, false, !bInitState);
ieee->SetHwRegHandler(dev, HW_VAR_CECHK_BSSID,
(u8 *)&bFilterOutNonAssociatedBSSID);
ieee->bNetPromiscuousMode = false;
}
EXPORT_SYMBOL(rtllib_DisableIntelPromiscuousMode);
static void rtllib_send_probe(struct rtllib_device *ieee, u8 is_mesh)
{
struct sk_buff *skb;
skb = rtllib_probe_req(ieee);
if (skb) {
softmac_mgmt_xmit(skb, ieee);
ieee->softmac_stats.tx_probe_rq++;
}
}
void rtllib_send_probe_requests(struct rtllib_device *ieee, u8 is_mesh)
{
if (ieee->active_scan && (ieee->softmac_features &
IEEE_SOFTMAC_PROBERQ)) {
rtllib_send_probe(ieee, 0);
rtllib_send_probe(ieee, 0);
}
}
static void rtllib_softmac_hint11d_wq(void *data)
{
}
void rtllib_update_active_chan_map(struct rtllib_device *ieee)
{
memcpy(ieee->active_channel_map, GET_DOT11D_INFO(ieee)->channel_map,
MAX_CHANNEL_NUMBER+1);
}
/* this performs syncro scan blocking the caller until all channels
* in the allowed channel map has been checked.
*/
void rtllib_softmac_scan_syncro(struct rtllib_device *ieee, u8 is_mesh)
{
union iwreq_data wrqu;
short ch = 0;
rtllib_update_active_chan_map(ieee);
ieee->be_scan_inprogress = true;
down(&ieee->scan_sem);
while (1) {
do {
ch++;
if (ch > MAX_CHANNEL_NUMBER)
goto out; /* scan completed */
} while (!ieee->active_channel_map[ch]);
/* this fuction can be called in two situations
* 1- We have switched to ad-hoc mode and we are
* performing a complete syncro scan before conclude
* there are no interesting cell and to create a
* new one. In this case the link state is
* RTLLIB_NOLINK until we found an interesting cell.
* If so the ieee8021_new_net, called by the RX path
* will set the state to RTLLIB_LINKED, so we stop
* scanning
* 2- We are linked and the root uses run iwlist scan.
* So we switch to RTLLIB_LINKED_SCANNING to remember
* that we are still logically linked (not interested in
* new network events, despite for updating the net list,
* but we are temporarly 'unlinked' as the driver shall
* not filter RX frames and the channel is changing.
* So the only situation in witch are interested is to check
* if the state become LINKED because of the #1 situation
*/
if (ieee->state == RTLLIB_LINKED)
goto out;
if (ieee->sync_scan_hurryup) {
printk(KERN_INFO "============>sync_scan_hurryup out\n");
goto out;
}
ieee->set_chan(ieee->dev, ch);
if (ieee->active_channel_map[ch] == 1)
rtllib_send_probe_requests(ieee, 0);
/* this prevent excessive time wait when we
* need to wait for a syncro scan to end..
*/
msleep_interruptible_rsl(RTLLIB_SOFTMAC_SCAN_TIME);
}
out:
ieee->actscanning = false;
ieee->sync_scan_hurryup = 0;
if (ieee->state >= RTLLIB_LINKED) {
if (IS_DOT11D_ENABLE(ieee))
DOT11D_ScanComplete(ieee);
}
up(&ieee->scan_sem);
ieee->be_scan_inprogress = false;
memset(&wrqu, 0, sizeof(wrqu));
wireless_send_event(ieee->dev, SIOCGIWSCAN, &wrqu, NULL);
}
static void rtllib_softmac_scan_wq(void *data)
{
struct rtllib_device *ieee = container_of_dwork_rsl(data,
struct rtllib_device, softmac_scan_wq);
u8 last_channel = ieee->current_network.channel;
rtllib_update_active_chan_map(ieee);
if (!ieee->ieee_up)
return;
if (rtllib_act_scanning(ieee, true) == true)
return;
down(&ieee->scan_sem);
if (ieee->eRFPowerState == eRfOff) {
printk(KERN_INFO "======>%s():rf state is eRfOff, return\n",
__func__);
goto out1;
}
do {
ieee->current_network.channel =
(ieee->current_network.channel + 1) %
MAX_CHANNEL_NUMBER;
if (ieee->scan_watch_dog++ > MAX_CHANNEL_NUMBER) {
if (!ieee->active_channel_map[ieee->current_network.channel])
ieee->current_network.channel = 6;
goto out; /* no good chans */
}
} while (!ieee->active_channel_map[ieee->current_network.channel]);
if (ieee->scanning_continue == 0)
goto out;
ieee->set_chan(ieee->dev, ieee->current_network.channel);
if (ieee->active_channel_map[ieee->current_network.channel] == 1)
rtllib_send_probe_requests(ieee, 0);
queue_delayed_work_rsl(ieee->wq, &ieee->softmac_scan_wq,
MSECS(RTLLIB_SOFTMAC_SCAN_TIME));
up(&ieee->scan_sem);
return;
out:
if (IS_DOT11D_ENABLE(ieee))
DOT11D_ScanComplete(ieee);
ieee->current_network.channel = last_channel;
out1:
ieee->actscanning = false;
ieee->scan_watch_dog = 0;
ieee->scanning_continue = 0;
up(&ieee->scan_sem);
}
static void rtllib_beacons_start(struct rtllib_device *ieee)
{
unsigned long flags;
spin_lock_irqsave(&ieee->beacon_lock, flags);
ieee->beacon_txing = 1;
rtllib_send_beacon(ieee);
spin_unlock_irqrestore(&ieee->beacon_lock, flags);
}
static void rtllib_beacons_stop(struct rtllib_device *ieee)
{
unsigned long flags;
spin_lock_irqsave(&ieee->beacon_lock, flags);
ieee->beacon_txing = 0;
del_timer_sync(&ieee->beacon_timer);
spin_unlock_irqrestore(&ieee->beacon_lock, flags);
}
void rtllib_stop_send_beacons(struct rtllib_device *ieee)
{
if (ieee->stop_send_beacons)
ieee->stop_send_beacons(ieee->dev);
if (ieee->softmac_features & IEEE_SOFTMAC_BEACONS)
rtllib_beacons_stop(ieee);
}
EXPORT_SYMBOL(rtllib_stop_send_beacons);
void rtllib_start_send_beacons(struct rtllib_device *ieee)
{
if (ieee->start_send_beacons)
ieee->start_send_beacons(ieee->dev);
if (ieee->softmac_features & IEEE_SOFTMAC_BEACONS)
rtllib_beacons_start(ieee);
}
EXPORT_SYMBOL(rtllib_start_send_beacons);
static void rtllib_softmac_stop_scan(struct rtllib_device *ieee)
{
down(&ieee->scan_sem);
ieee->scan_watch_dog = 0;
if (ieee->scanning_continue == 1) {
ieee->scanning_continue = 0;
ieee->actscanning = 0;
cancel_delayed_work(&ieee->softmac_scan_wq);
}
up(&ieee->scan_sem);
}
void rtllib_stop_scan(struct rtllib_device *ieee)
{
if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
rtllib_softmac_stop_scan(ieee);
} else {
if (ieee->rtllib_stop_hw_scan)
ieee->rtllib_stop_hw_scan(ieee->dev);
}
}
EXPORT_SYMBOL(rtllib_stop_scan);
void rtllib_stop_scan_syncro(struct rtllib_device *ieee)
{
if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
ieee->sync_scan_hurryup = 1;
} else {
if (ieee->rtllib_stop_hw_scan)
ieee->rtllib_stop_hw_scan(ieee->dev);
}
}
EXPORT_SYMBOL(rtllib_stop_scan_syncro);
bool rtllib_act_scanning(struct rtllib_device *ieee, bool sync_scan)
{
if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
if (sync_scan)
return ieee->be_scan_inprogress;
else
return ieee->actscanning || ieee->be_scan_inprogress;
} else {
return test_bit(STATUS_SCANNING, &ieee->status);
}
}
EXPORT_SYMBOL(rtllib_act_scanning);
/* called with ieee->lock held */
static void rtllib_start_scan(struct rtllib_device *ieee)
{
RT_TRACE(COMP_DBG, "===>%s()\n", __func__);
if (ieee->rtllib_ips_leave_wq != NULL)
ieee->rtllib_ips_leave_wq(ieee->dev);
if (IS_DOT11D_ENABLE(ieee)) {
if (IS_COUNTRY_IE_VALID(ieee))
RESET_CIE_WATCHDOG(ieee);
}
if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
if (ieee->scanning_continue == 0) {
ieee->actscanning = true;
ieee->scanning_continue = 1;
queue_delayed_work_rsl(ieee->wq,
&ieee->softmac_scan_wq, 0);
}
} else {
if (ieee->rtllib_start_hw_scan)
ieee->rtllib_start_hw_scan(ieee->dev);
}
}
/* called with wx_sem held */
void rtllib_start_scan_syncro(struct rtllib_device *ieee, u8 is_mesh)
{
if (IS_DOT11D_ENABLE(ieee)) {
if (IS_COUNTRY_IE_VALID(ieee))
RESET_CIE_WATCHDOG(ieee);
}
ieee->sync_scan_hurryup = 0;
if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
rtllib_softmac_scan_syncro(ieee, is_mesh);
} else {
if (ieee->rtllib_start_hw_scan)
ieee->rtllib_start_hw_scan(ieee->dev);
}
}
EXPORT_SYMBOL(rtllib_start_scan_syncro);
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 = 0;
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 = (struct rtllib_authentication *)
skb_put(skb, sizeof(struct rtllib_authentication));
auth->header.frame_ctl = RTLLIB_STYPE_AUTH;
if (challengelen)
auth->header.frame_ctl |= RTLLIB_FCTL_WEP;
auth->header.duration_id = 0x013a;
memcpy(auth->header.addr1, beacon->bssid, ETH_ALEN);
memcpy(auth->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
memcpy(auth->header.addr3, beacon->bssid, ETH_ALEN);
if (ieee->auth_mode == 0)
auth->algorithm = WLAN_AUTH_OPEN;
else if (ieee->auth_mode == 1)
auth->algorithm = WLAN_AUTH_SHARED_KEY;
else if (ieee->auth_mode == 2)
auth->algorithm = WLAN_AUTH_OPEN;
auth->transaction = cpu_to_le16(ieee->associate_seq);
ieee->associate_seq++;
auth->status = cpu_to_le16(WLAN_STATUS_SUCCESS);
return skb;
}
static struct sk_buff *rtllib_probe_resp(struct rtllib_device *ieee, u8 *dest)
{
u8 *tag;
int beacon_size;
struct rtllib_probe_response *beacon_buf;
struct sk_buff *skb = NULL;
int encrypt;
int atim_len, erp_len;
struct lib80211_crypt_data *crypt;
char *ssid = ieee->current_network.ssid;
int ssid_len = ieee->current_network.ssid_len;
int rate_len = ieee->current_network.rates_len+2;
int rate_ex_len = ieee->current_network.rates_ex_len;
int wpa_ie_len = ieee->wpa_ie_len;
u8 erpinfo_content = 0;
u8 *tmp_ht_cap_buf = NULL;
u8 tmp_ht_cap_len = 0;
u8 *tmp_ht_info_buf = NULL;
u8 tmp_ht_info_len = 0;
struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
u8 *tmp_generic_ie_buf = NULL;
u8 tmp_generic_ie_len = 0;
if (rate_ex_len > 0)
rate_ex_len += 2;
if (ieee->current_network.capability & WLAN_CAPABILITY_IBSS)
atim_len = 4;
else
atim_len = 0;
if ((ieee->current_network.mode == IEEE_G) ||
(ieee->current_network.mode == IEEE_N_24G &&
ieee->pHTInfo->bCurSuppCCK)) {
erp_len = 3;
erpinfo_content = 0;
if (ieee->current_network.buseprotection)
erpinfo_content |= ERP_UseProtection;
} else
erp_len = 0;
crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
encrypt = ieee->host_encrypt && crypt && crypt->ops &&
((0 == strcmp(crypt->ops->name, "R-WEP") || wpa_ie_len));
if (ieee->pHTInfo->bCurrentHTSupport) {
tmp_ht_cap_buf = (u8 *) &(ieee->pHTInfo->SelfHTCap);
tmp_ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap);
tmp_ht_info_buf = (u8 *) &(ieee->pHTInfo->SelfHTInfo);
tmp_ht_info_len = sizeof(ieee->pHTInfo->SelfHTInfo);
HTConstructCapabilityElement(ieee, tmp_ht_cap_buf,
&tmp_ht_cap_len, encrypt, false);
HTConstructInfoElement(ieee, tmp_ht_info_buf, &tmp_ht_info_len,
encrypt);
if (pHTInfo->bRegRT2RTAggregation) {
tmp_generic_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer;
tmp_generic_ie_len =
sizeof(ieee->pHTInfo->szRT2RTAggBuffer);
HTConstructRT2RTAggElement(ieee, tmp_generic_ie_buf,
&tmp_generic_ie_len);
}
}
beacon_size = sizeof(struct rtllib_probe_response)+2+
ssid_len + 3 + rate_len + rate_ex_len + atim_len + erp_len
+ wpa_ie_len + ieee->tx_headroom;
skb = dev_alloc_skb(beacon_size);
if (!skb)
return NULL;
skb_reserve(skb, ieee->tx_headroom);
beacon_buf = (struct rtllib_probe_response *) skb_put(skb,
(beacon_size - ieee->tx_headroom));
memcpy(beacon_buf->header.addr1, dest, ETH_ALEN);
memcpy(beacon_buf->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
memcpy(beacon_buf->header.addr3, ieee->current_network.bssid, ETH_ALEN);
beacon_buf->header.duration_id = 0;
beacon_buf->beacon_interval =
cpu_to_le16(ieee->current_network.beacon_interval);
beacon_buf->capability =
cpu_to_le16(ieee->current_network.capability &
WLAN_CAPABILITY_IBSS);
beacon_buf->capability |=
cpu_to_le16(ieee->current_network.capability &
WLAN_CAPABILITY_SHORT_PREAMBLE);
if (ieee->short_slot && (ieee->current_network.capability &
WLAN_CAPABILITY_SHORT_SLOT_TIME))
cpu_to_le16((beacon_buf->capability |=
WLAN_CAPABILITY_SHORT_SLOT_TIME));
crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
if (encrypt)
beacon_buf->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
beacon_buf->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_PROBE_RESP);
beacon_buf->info_element[0].id = MFIE_TYPE_SSID;
beacon_buf->info_element[0].len = ssid_len;
tag = (u8 *) beacon_buf->info_element[0].data;
memcpy(tag, ssid, ssid_len);
tag += ssid_len;
*(tag++) = MFIE_TYPE_RATES;
*(tag++) = rate_len-2;
memcpy(tag, ieee->current_network.rates, rate_len-2);
tag += rate_len-2;
*(tag++) = MFIE_TYPE_DS_SET;
*(tag++) = 1;
*(tag++) = ieee->current_network.channel;
if (atim_len) {
u16 val16;
*(tag++) = MFIE_TYPE_IBSS_SET;
*(tag++) = 2;
val16 = cpu_to_le16(ieee->current_network.atim_window);
memcpy((u8 *)tag, (u8 *)&val16, 2);
tag += 2;
}
if (erp_len) {
*(tag++) = MFIE_TYPE_ERP;
*(tag++) = 1;
*(tag++) = erpinfo_content;
}
if (rate_ex_len) {
*(tag++) = MFIE_TYPE_RATES_EX;
*(tag++) = rate_ex_len-2;
memcpy(tag, ieee->current_network.rates_ex, rate_ex_len-2);
tag += rate_ex_len-2;
}
if (wpa_ie_len) {
if (ieee->iw_mode == IW_MODE_ADHOC)
memcpy(&ieee->wpa_ie[14], &ieee->wpa_ie[8], 4);
memcpy(tag, ieee->wpa_ie, ieee->wpa_ie_len);
tag += ieee->wpa_ie_len;
}
return skb;
}
static struct sk_buff *rtllib_assoc_resp(struct rtllib_device *ieee, u8 *dest)
{
struct sk_buff *skb;
u8 *tag;
struct lib80211_crypt_data *crypt;
struct rtllib_assoc_response_frame *assoc;
short encrypt;
unsigned int rate_len = rtllib_MFIE_rate_len(ieee);
int len = sizeof(struct rtllib_assoc_response_frame) + rate_len +
ieee->tx_headroom;
skb = dev_alloc_skb(len);
if (!skb)
return NULL;
skb_reserve(skb, ieee->tx_headroom);
assoc = (struct rtllib_assoc_response_frame *)
skb_put(skb, sizeof(struct rtllib_assoc_response_frame));
assoc->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_ASSOC_RESP);
memcpy(assoc->header.addr1, dest, ETH_ALEN);
memcpy(assoc->header.addr3, ieee->dev->dev_addr, ETH_ALEN);
memcpy(assoc->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
assoc->capability = cpu_to_le16(ieee->iw_mode == IW_MODE_MASTER ?
WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS);
if (ieee->short_slot)
assoc->capability |=
cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME);
if (ieee->host_encrypt)
crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
else
crypt = NULL;
encrypt = (crypt && crypt->ops);
if (encrypt)
assoc->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
assoc->status = 0;
assoc->aid = cpu_to_le16(ieee->assoc_id);
if (ieee->assoc_id == 0x2007)
ieee->assoc_id = 0;
else
ieee->assoc_id++;
tag = (u8 *) skb_put(skb, rate_len);
rtllib_MFIE_Brate(ieee, &tag);
rtllib_MFIE_Grate(ieee, &tag);
return skb;
}
static struct sk_buff *rtllib_auth_resp(struct rtllib_device *ieee, int status,
u8 *dest)
{
struct sk_buff *skb = NULL;
struct rtllib_authentication *auth;
int len = ieee->tx_headroom + sizeof(struct rtllib_authentication) + 1;
skb = dev_alloc_skb(len);
if (!skb)
return NULL;
skb->len = sizeof(struct rtllib_authentication);
skb_reserve(skb, ieee->tx_headroom);
auth = (struct rtllib_authentication *)
skb_put(skb, sizeof(struct rtllib_authentication));
auth->status = cpu_to_le16(status);
auth->transaction = cpu_to_le16(2);
auth->algorithm = cpu_to_le16(WLAN_AUTH_OPEN);
memcpy(auth->header.addr3, ieee->dev->dev_addr, ETH_ALEN);
memcpy(auth->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
memcpy(auth->header.addr1, dest, ETH_ALEN);
auth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_AUTH);
return skb;
}
static struct sk_buff *rtllib_null_func(struct rtllib_device *ieee, short pwr)
{
struct sk_buff *skb;
struct rtllib_hdr_3addr *hdr;
skb = dev_alloc_skb(sizeof(struct rtllib_hdr_3addr)+ieee->tx_headroom);
if (!skb)
return NULL;
skb_reserve(skb, ieee->tx_headroom);
hdr = (struct rtllib_hdr_3addr *)skb_put(skb,
sizeof(struct rtllib_hdr_3addr));
memcpy(hdr->addr1, ieee->current_network.bssid, ETH_ALEN);
memcpy(hdr->addr2, ieee->dev->dev_addr, ETH_ALEN);
memcpy(hdr->addr3, ieee->current_network.bssid, ETH_ALEN);
hdr->frame_ctl = cpu_to_le16(RTLLIB_FTYPE_DATA |
RTLLIB_STYPE_NULLFUNC | RTLLIB_FCTL_TODS |
(pwr ? RTLLIB_FCTL_PM : 0));
return skb;
}
static struct sk_buff *rtllib_pspoll_func(struct rtllib_device *ieee)
{
struct sk_buff *skb;
struct rtllib_pspoll_hdr *hdr;
skb = dev_alloc_skb(sizeof(struct rtllib_pspoll_hdr)+ieee->tx_headroom);
if (!skb)
return NULL;
skb_reserve(skb, ieee->tx_headroom);
hdr = (struct rtllib_pspoll_hdr *)skb_put(skb,
sizeof(struct rtllib_pspoll_hdr));
memcpy(hdr->bssid, ieee->current_network.bssid, ETH_ALEN);
memcpy(hdr->ta, ieee->dev->dev_addr, ETH_ALEN);
hdr->aid = cpu_to_le16(ieee->assoc_id | 0xc000);
hdr->frame_ctl = cpu_to_le16(RTLLIB_FTYPE_CTL | RTLLIB_STYPE_PSPOLL |
RTLLIB_FCTL_PM);
return skb;
}
static void rtllib_resp_to_assoc_rq(struct rtllib_device *ieee, u8 *dest)
{
struct sk_buff *buf = rtllib_assoc_resp(ieee, dest);
if (buf)
softmac_mgmt_xmit(buf, ieee);
}
static void rtllib_resp_to_auth(struct rtllib_device *ieee, int s, u8 *dest)
{
struct sk_buff *buf = rtllib_auth_resp(ieee, s, dest);
if (buf)
softmac_mgmt_xmit(buf, ieee);
}
static void rtllib_resp_to_probe(struct rtllib_device *ieee, u8 *dest)
{
struct sk_buff *buf = rtllib_probe_resp(ieee, dest);
if (buf)
softmac_mgmt_xmit(buf, ieee);
}
inline int SecIsInPMKIDList(struct rtllib_device *ieee, u8 *bssid)
{
int i = 0;
do {
if ((ieee->PMKIDList[i].bUsed) &&
(memcmp(ieee->PMKIDList[i].Bssid, bssid, ETH_ALEN) == 0))
break;
else
i++;
} while (i < NUM_PMKID_CACHE);
if (i == NUM_PMKID_CACHE)
i = -1;
return i;
}
inline struct sk_buff *rtllib_association_req(struct rtllib_network *beacon,
struct rtllib_device *ieee)
{
struct sk_buff *skb;
struct rtllib_assoc_request_frame *hdr;
u8 *tag, *ies;
int i;
u8 *ht_cap_buf = NULL;
u8 ht_cap_len = 0;
u8 *realtek_ie_buf = NULL;
u8 realtek_ie_len = 0;
int wpa_ie_len = ieee->wpa_ie_len;
int wps_ie_len = ieee->wps_ie_len;
unsigned int ckip_ie_len = 0;
unsigned int ccxrm_ie_len = 0;
unsigned int cxvernum_ie_len = 0;
struct lib80211_crypt_data *crypt;
int encrypt;
int PMKCacheIdx;
unsigned int rate_len = (beacon->rates_len ?
(beacon->rates_len + 2) : 0) +
(beacon->rates_ex_len ? (beacon->rates_ex_len) +
2 : 0);
unsigned int wmm_info_len = beacon->qos_data.supported ? 9 : 0;
unsigned int turbo_info_len = beacon->Turbo_Enable ? 9 : 0;
int len = 0;
crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
if (crypt != NULL)
encrypt = ieee->host_encrypt && crypt && crypt->ops &&
((0 == strcmp(crypt->ops->name, "R-WEP") ||
wpa_ie_len));
else
encrypt = 0;
if ((ieee->rtllib_ap_sec_type &&
(ieee->rtllib_ap_sec_type(ieee) & SEC_ALG_TKIP)) ||
(ieee->bForcedBgMode == true)) {
ieee->pHTInfo->bEnableHT = 0;
ieee->mode = WIRELESS_MODE_G;
}
if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
ht_cap_buf = (u8 *)&(ieee->pHTInfo->SelfHTCap);
ht_cap_len = sizeof(ieee->pHTInfo->SelfHTCap);
HTConstructCapabilityElement(ieee, ht_cap_buf, &ht_cap_len,
encrypt, true);
if (ieee->pHTInfo->bCurrentRT2RTAggregation) {
realtek_ie_buf = ieee->pHTInfo->szRT2RTAggBuffer;
realtek_ie_len =
sizeof(ieee->pHTInfo->szRT2RTAggBuffer);
HTConstructRT2RTAggElement(ieee, realtek_ie_buf,
&realtek_ie_len);
}
}
if (beacon->bCkipSupported)
ckip_ie_len = 30+2;
if (beacon->bCcxRmEnable)
ccxrm_ie_len = 6+2;
if (beacon->BssCcxVerNumber >= 2)
cxvernum_ie_len = 5+2;
PMKCacheIdx = SecIsInPMKIDList(ieee, ieee->current_network.bssid);
if (PMKCacheIdx >= 0) {
wpa_ie_len += 18;
printk(KERN_INFO "[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 = (struct rtllib_assoc_request_frame *)
skb_put(skb, sizeof(struct rtllib_assoc_request_frame) + 2);
hdr->header.frame_ctl = RTLLIB_STYPE_ASSOC_REQ;
hdr->header.duration_id = 37;
memcpy(hdr->header.addr1, beacon->bssid, ETH_ALEN);
memcpy(hdr->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
memcpy(hdr->header.addr3, beacon->bssid, ETH_ALEN);
memcpy(ieee->ap_mac_addr, beacon->bssid, ETH_ALEN);
hdr->capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
if (beacon->capability & WLAN_CAPABILITY_PRIVACY)
hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
if (beacon->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE);
if (ieee->short_slot &&
(beacon->capability&WLAN_CAPABILITY_SHORT_SLOT_TIME))
hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME);
hdr->listen_interval = beacon->listen_interval;
hdr->info_element[0].id = MFIE_TYPE_SSID;
hdr->info_element[0].len = beacon->ssid_len;
tag = skb_put(skb, beacon->ssid_len);
memcpy(tag, beacon->ssid, beacon->ssid_len);
tag = skb_put(skb, rate_len);
if (beacon->rates_len) {
*tag++ = MFIE_TYPE_RATES;
*tag++ = beacon->rates_len;
for (i = 0; i < beacon->rates_len; i++)
*tag++ = beacon->rates[i];
}
if (beacon->rates_ex_len) {
*tag++ = MFIE_TYPE_RATES_EX;
*tag++ = beacon->rates_ex_len;
for (i = 0; i < beacon->rates_ex_len; i++)
*tag++ = beacon->rates_ex[i];
}
if (beacon->bCkipSupported) {
static u8 AironetIeOui[] = {0x00, 0x01, 0x66};
u8 CcxAironetBuf[30];
struct octet_string osCcxAironetIE;
memset(CcxAironetBuf, 0, 30);
osCcxAironetIE.Octet = CcxAironetBuf;
osCcxAironetIE.Length = sizeof(CcxAironetBuf);
memcpy(osCcxAironetIE.Octet, AironetIeOui,
sizeof(AironetIeOui));
osCcxAironetIE.Octet[IE_CISCO_FLAG_POSITION] |=
(SUPPORT_CKIP_PK|SUPPORT_CKIP_MIC);
tag = skb_put(skb, ckip_ie_len);
*tag++ = MFIE_TYPE_AIRONET;
*tag++ = osCcxAironetIE.Length;
memcpy(tag, osCcxAironetIE.Octet, osCcxAironetIE.Length);
tag += osCcxAironetIE.Length;
}
if (beacon->bCcxRmEnable) {
static u8 CcxRmCapBuf[] = {0x00, 0x40, 0x96, 0x01, 0x01, 0x00};
struct octet_string osCcxRmCap;
osCcxRmCap.Octet = CcxRmCapBuf;
osCcxRmCap.Length = sizeof(CcxRmCapBuf);
tag = skb_put(skb, ccxrm_ie_len);
*tag++ = MFIE_TYPE_GENERIC;
*tag++ = osCcxRmCap.Length;
memcpy(tag, osCcxRmCap.Octet, osCcxRmCap.Length);
tag += osCcxRmCap.Length;
}
if (beacon->BssCcxVerNumber >= 2) {
u8 CcxVerNumBuf[] = {0x00, 0x40, 0x96, 0x03, 0x00};
struct octet_string osCcxVerNum;
CcxVerNumBuf[4] = beacon->BssCcxVerNumber;
osCcxVerNum.Octet = CcxVerNumBuf;
osCcxVerNum.Length = sizeof(CcxVerNumBuf);
tag = skb_put(skb, cxvernum_ie_len);
*tag++ = MFIE_TYPE_GENERIC;
*tag++ = osCcxVerNum.Length;
memcpy(tag, osCcxVerNum.Octet, osCcxVerNum.Length);
tag += osCcxVerNum.Length;
}
if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
if (ieee->pHTInfo->ePeerHTSpecVer != HT_SPEC_VER_EWC) {
tag = skb_put(skb, ht_cap_len);
*tag++ = MFIE_TYPE_HT_CAP;
*tag++ = ht_cap_len - 2;
memcpy(tag, ht_cap_buf, ht_cap_len - 2);
tag += ht_cap_len - 2;
}
}
if (wpa_ie_len) {
tag = skb_put(skb, ieee->wpa_ie_len);
memcpy(tag, ieee->wpa_ie, ieee->wpa_ie_len);
if (PMKCacheIdx >= 0) {
tag = skb_put(skb, 18);
*tag = 1;
*(tag + 1) = 0;
memcpy((tag + 2), &ieee->PMKIDList[PMKCacheIdx].PMKID,
16);
}
}
if (wmm_info_len) {
tag = skb_put(skb, wmm_info_len);
rtllib_WMM_Info(ieee, &tag);
}
if (wps_ie_len && ieee->wps_ie) {
tag = skb_put(skb, wps_ie_len);
memcpy(tag, ieee->wps_ie, wps_ie_len);
}
tag = skb_put(skb, turbo_info_len);
if (turbo_info_len)
rtllib_TURBO_Info(ieee, &tag);
if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
if (ieee->pHTInfo->ePeerHTSpecVer == HT_SPEC_VER_EWC) {
tag = skb_put(skb, ht_cap_len);
*tag++ = MFIE_TYPE_GENERIC;
*tag++ = ht_cap_len - 2;
memcpy(tag, ht_cap_buf, ht_cap_len - 2);
tag += ht_cap_len - 2;
}
if (ieee->pHTInfo->bCurrentRT2RTAggregation) {
tag = skb_put(skb, realtek_ie_len);
*tag++ = MFIE_TYPE_GENERIC;
*tag++ = realtek_ie_len - 2;
memcpy(tag, realtek_ie_buf, realtek_ie_len - 2);
}
}
kfree(ieee->assocreq_ies);
ieee->assocreq_ies = NULL;
ies = &(hdr->info_element[0].id);
ieee->assocreq_ies_len = (skb->data + skb->len) - ies;
ieee->assocreq_ies = kmalloc(ieee->assocreq_ies_len, GFP_ATOMIC);
if (ieee->assocreq_ies)
memcpy(ieee->assocreq_ies, ies, ieee->assocreq_ies_len);
else {
printk(KERN_INFO "%s()Warning: can't alloc memory for assocreq"
"_ies\n", __func__);
ieee->assocreq_ies_len = 0;
}
return skb;
}
void rtllib_associate_abort(struct rtllib_device *ieee)
{
unsigned long flags;
spin_lock_irqsave(&ieee->lock, flags);
ieee->associate_seq++;
/* don't scan, and avoid to have the RX path possibily
* try again to associate. Even do not react to AUTH or
* ASSOC response. Just wait for the retry wq to be scheduled.
* Here we will check if there are good nets to associate
* with, so we retry or just get back to NO_LINK and scanning
*/
if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING) {
RTLLIB_DEBUG_MGMT("Authentication failed\n");
ieee->softmac_stats.no_auth_rs++;
} else {
RTLLIB_DEBUG_MGMT("Association failed\n");
ieee->softmac_stats.no_ass_rs++;
}
ieee->state = RTLLIB_ASSOCIATING_RETRY;
queue_delayed_work_rsl(ieee->wq, &ieee->associate_retry_wq,
RTLLIB_SOFTMAC_ASSOC_RETRY_TIME);
spin_unlock_irqrestore(&ieee->lock, flags);
}
static void rtllib_associate_abort_cb(unsigned long dev)
{
rtllib_associate_abort((struct rtllib_device *) dev);
}
static void rtllib_associate_step1(struct rtllib_device *ieee, u8 * daddr)
{
struct rtllib_network *beacon = &ieee->current_network;
struct sk_buff *skb;
RTLLIB_DEBUG_MGMT("Stopping scan\n");
ieee->softmac_stats.tx_auth_rq++;
skb = rtllib_authentication_req(beacon, ieee, 0, daddr);
if (!skb)
rtllib_associate_abort(ieee);
else {
ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATING ;
RTLLIB_DEBUG_MGMT("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);
RTLLIB_DEBUG_MGMT("Sending authentication challenge "
"response\n");
rtllib_encrypt_fragment(ieee, skb,
sizeof(struct rtllib_hdr_3addr));
softmac_mgmt_xmit(skb, ieee);
mod_timer(&ieee->associate_timer, jiffies + (HZ/2));
}
kfree(challenge);
}
static void rtllib_associate_step2(struct rtllib_device *ieee)
{
struct sk_buff *skb;
struct rtllib_network *beacon = &ieee->current_network;
del_timer_sync(&ieee->associate_timer);
RTLLIB_DEBUG_MGMT("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));
}
}
#define CANCELLED 2
static void rtllib_associate_complete_wq(void *data)
{
struct rtllib_device *ieee = (struct rtllib_device *)
container_of_work_rsl(data,
struct rtllib_device,
associate_complete_wq);
struct rt_pwr_save_ctrl *pPSC = (struct rt_pwr_save_ctrl *)
(&(ieee->PowerSaveControl));
printk(KERN_INFO "Associated successfully\n");
if (ieee->is_silent_reset == 0) {
printk(KERN_INFO "normal associate\n");
notify_wx_assoc_event(ieee);
}
netif_carrier_on(ieee->dev);
ieee->is_roaming = false;
if (rtllib_is_54g(&ieee->current_network) &&
(ieee->modulation & RTLLIB_OFDM_MODULATION)) {
ieee->rate = 108;
printk(KERN_INFO"Using G rates:%d\n", ieee->rate);
} else {
ieee->rate = 22;
ieee->SetWirelessMode(ieee->dev, IEEE_B);
printk(KERN_INFO"Using B rates:%d\n", ieee->rate);
}
if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
printk(KERN_INFO "Successfully associated, ht enabled\n");
HTOnAssocRsp(ieee);
} else {
printk(KERN_INFO "Successfully associated, ht not "
"enabled(%d, %d)\n",
ieee->pHTInfo->bCurrentHTSupport,
ieee->pHTInfo->bEnableHT);
memset(ieee->dot11HTOperationalRateSet, 0, 16);
}
ieee->LinkDetectInfo.SlotNum = 2 * (1 +
ieee->current_network.beacon_interval /
500);
if (ieee->LinkDetectInfo.NumRecvBcnInPeriod == 0 ||
ieee->LinkDetectInfo.NumRecvDataInPeriod == 0) {
ieee->LinkDetectInfo.NumRecvBcnInPeriod = 1;
ieee->LinkDetectInfo.NumRecvDataInPeriod = 1;
}
pPSC->LpsIdleCount = 0;
ieee->link_change(ieee->dev);
if (ieee->is_silent_reset == 1) {
printk(KERN_INFO "silent reset associate\n");
ieee->is_silent_reset = 0;
}
if (ieee->data_hard_resume)
ieee->data_hard_resume(ieee->dev);
}
static void rtllib_sta_send_associnfo(struct rtllib_device *ieee)
{
}
static void rtllib_associate_complete(struct rtllib_device *ieee)
{
del_timer_sync(&ieee->associate_timer);
ieee->state = RTLLIB_LINKED;
rtllib_sta_send_associnfo(ieee);
queue_work_rsl(ieee->wq, &ieee->associate_complete_wq);
}
static void rtllib_associate_procedure_wq(void *data)
{
struct rtllib_device *ieee = container_of_dwork_rsl(data,
struct rtllib_device,
associate_procedure_wq);
rtllib_stop_scan_syncro(ieee);
if (ieee->rtllib_ips_leave != NULL)
ieee->rtllib_ips_leave(ieee->dev);
down(&ieee->wx_sem);
if (ieee->data_hard_stop)
ieee->data_hard_stop(ieee->dev);
rtllib_stop_scan(ieee);
RT_TRACE(COMP_DBG, "===>%s(), chan:%d\n", __func__,
ieee->current_network.channel);
HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT);
if (ieee->eRFPowerState == eRfOff) {
RT_TRACE(COMP_DBG, "=============>%s():Rf state is eRfOff,"
" schedule ipsleave wq again,return\n", __func__);
if (ieee->rtllib_ips_leave_wq != NULL)
ieee->rtllib_ips_leave_wq(ieee->dev);
up(&ieee->wx_sem);
return;
}
ieee->associate_seq = 1;
rtllib_associate_step1(ieee, ieee->current_network.bssid);
up(&ieee->wx_sem);
}
inline void rtllib_softmac_new_net(struct rtllib_device *ieee,
struct rtllib_network *net)
{
u8 tmp_ssid[IW_ESSID_MAX_SIZE + 1];
int tmp_ssid_len = 0;
short apset, ssidset, ssidbroad, apmatch, ssidmatch;
/* we are interested in new new only if we are not associated
* and we are not associating / authenticating
*/
if (ieee->state != RTLLIB_NOLINK)
return;
if ((ieee->iw_mode == IW_MODE_INFRA) && !(net->capability &
WLAN_CAPABILITY_ESS))
return;
if ((ieee->iw_mode == IW_MODE_ADHOC) && !(net->capability &
WLAN_CAPABILITY_IBSS))
return;
if ((ieee->iw_mode == IW_MODE_ADHOC) &&
(net->channel > ieee->ibss_maxjoin_chal))
return;
if (ieee->iw_mode == IW_MODE_INFRA || ieee->iw_mode == IW_MODE_ADHOC) {
/* if the user specified the AP MAC, we need also the essid
* This could be obtained by beacons or, if the network does not
* broadcast it, it can be put manually.
*/
apset = ieee->wap_set;
ssidset = ieee->ssid_set;
ssidbroad = !(net->ssid_len == 0 || net->ssid[0] == '\0');
apmatch = (memcmp(ieee->current_network.bssid, net->bssid,
ETH_ALEN) == 0);
if (!ssidbroad) {
ssidmatch = (ieee->current_network.ssid_len ==
net->hidden_ssid_len) &&
(!strncmp(ieee->current_network.ssid,
net->hidden_ssid, net->hidden_ssid_len));
if (net->hidden_ssid_len > 0) {
strncpy(net->ssid, net->hidden_ssid,
net->hidden_ssid_len);
net->ssid_len = net->hidden_ssid_len;
ssidbroad = 1;
}
} else
ssidmatch =
(ieee->current_network.ssid_len == net->ssid_len) &&
(!strncmp(ieee->current_network.ssid, net->ssid,
net->ssid_len));
/* if the user set the AP check if match.
* if the network does not broadcast essid we check the
* user supplyed 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 bradcast 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)) {
/* if the essid is hidden replace it with the
* essid provided by the user.
*/
if (!ssidbroad) {
strncpy(tmp_ssid, ieee->current_network.ssid,
IW_ESSID_MAX_SIZE);
tmp_ssid_len = ieee->current_network.ssid_len;
}
memcpy(&ieee->current_network, net,
sizeof(struct rtllib_network));
if (!ssidbroad) {
strncpy(ieee->current_network.ssid, tmp_ssid,
IW_ESSID_MAX_SIZE);
ieee->current_network.ssid_len = tmp_ssid_len;
}
printk(KERN_INFO"Linking with %s,channel:%d, qos:%d, "
"myHT:%d, networkHT:%d, mode:%x cur_net.flags"
":0x%x\n", ieee->current_network.ssid,
ieee->current_network.channel,
ieee->current_network.qos_data.supported,
ieee->pHTInfo->bEnableHT,
ieee->current_network.bssht.bdSupportHT,
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);
ieee->hwscan_ch_bk = ieee->current_network.channel;
HTResetIOTSetting(ieee->pHTInfo);
ieee->wmm_acm = 0;
if (ieee->iw_mode == IW_MODE_INFRA) {
/* Join the network for the first time */
ieee->AsocRetryCount = 0;
if ((ieee->current_network.qos_data.supported == 1) &&
ieee->current_network.bssht.bdSupportHT)
HTResetSelfAndSavePeerSetting(ieee,
&(ieee->current_network));
else
ieee->pHTInfo->bCurrentHTSupport =
false;
ieee->state = RTLLIB_ASSOCIATING;
if (ieee->LedControlHandler != NULL)
ieee->LedControlHandler(ieee->dev,
LED_CTL_START_TO_LINK);
queue_delayed_work_rsl(ieee->wq,
&ieee->associate_procedure_wq, 0);
} else {
if (rtllib_is_54g(&ieee->current_network) &&
(ieee->modulation & RTLLIB_OFDM_MODULATION)) {
ieee->rate = 108;
ieee->SetWirelessMode(ieee->dev, IEEE_G);
printk(KERN_INFO"Using G rates\n");
} else {
ieee->rate = 22;
ieee->SetWirelessMode(ieee->dev, IEEE_B);
printk(KERN_INFO"Using B rates\n");
}
memset(ieee->dot11HTOperationalRateSet, 0, 16);
ieee->state = RTLLIB_LINKED;
}
}
}
}
void rtllib_softmac_check_all_nets(struct rtllib_device *ieee)
{
unsigned long flags;
struct rtllib_network *target;
spin_lock_irqsave(&ieee->lock, flags);
list_for_each_entry(target, &ieee->network_list, list) {
/* if the state become different that NOLINK means
* we had found what we are searching for
*/
if (ieee->state != RTLLIB_NOLINK)
break;
if (ieee->scan_age == 0 || time_after(target->last_scanned +
ieee->scan_age, jiffies))
rtllib_softmac_new_net(ieee, target);
}
spin_unlock_irqrestore(&ieee->lock, flags);
}
static inline u16 auth_parse(struct 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))) {
RTLLIB_DEBUG_MGMT("invalid len in auth resp: %d\n", skb->len);
return 0xcafe;
}
*challenge = NULL;
a = (struct rtllib_authentication *) skb->data;
if (skb->len > (sizeof(struct rtllib_authentication) + 3)) {
t = skb->data + sizeof(struct rtllib_authentication);
if (*(t++) == MFIE_TYPE_CHALLENGE) {
*chlen = *(t++);
*challenge = kmalloc(*chlen, GFP_ATOMIC);
memcpy(*challenge, t, *chlen); /*TODO - check here*/
}
}
return cpu_to_le16(a->status);
}
static int auth_rq_parse(struct sk_buff *skb, u8 *dest)
{
struct rtllib_authentication *a;
if (skb->len < (sizeof(struct rtllib_authentication) -
sizeof(struct rtllib_info_element))) {
RTLLIB_DEBUG_MGMT("invalid len in auth request: %d\n",
skb->len);
return -1;
}
a = (struct rtllib_authentication *) skb->data;
memcpy(dest, a->header.addr2, ETH_ALEN);
if (le16_to_cpu(a->algorithm) != WLAN_AUTH_OPEN)
return WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
return WLAN_STATUS_SUCCESS;
}
static short probe_rq_parse(struct rtllib_device *ieee, struct sk_buff *skb,
u8 *src)
{
u8 *tag;
u8 *skbend;
u8 *ssid = NULL;
u8 ssidlen = 0;
struct rtllib_hdr_3addr *header =
(struct rtllib_hdr_3addr *) skb->data;
bool bssid_match;
if (skb->len < sizeof(struct rtllib_hdr_3addr))
return -1; /* corrupted */
bssid_match =
(memcmp(header->addr3, ieee->current_network.bssid, ETH_ALEN) != 0) &&
(memcmp(header->addr3, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0);
if (bssid_match)
return -1;
memcpy(src, header->addr2, ETH_ALEN);
skbend = (u8 *)skb->data + skb->len;
tag = skb->data + sizeof(struct rtllib_hdr_3addr);
while (tag + 1 < skbend) {
if (*tag == 0) {
ssid = tag + 2;
ssidlen = *(tag + 1);
break;
}
tag++; /* point to the len field */
tag = tag + *(tag); /* point to the last data byte of the tag */
tag++; /* point to the next tag */
}
if (ssidlen == 0)
return 1;
if (!ssid)
return 1; /* ssid not found in tagged param */
return !strncmp(ssid, ieee->current_network.ssid, ssidlen);
}
static int assoc_rq_parse(struct sk_buff *skb, u8 *dest)
{
struct rtllib_assoc_request_frame *a;
if (skb->len < (sizeof(struct rtllib_assoc_request_frame) -
sizeof(struct rtllib_info_element))) {
RTLLIB_DEBUG_MGMT("invalid len in auth request:%d\n", skb->len);
return -1;
}
a = (struct rtllib_assoc_request_frame *) skb->data;
memcpy(dest, a->header.addr2, ETH_ALEN);
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)) {
RTLLIB_DEBUG_MGMT("invalid len in auth resp: %d\n", skb->len);
return 0xcafe;
}
response_head = (struct rtllib_assoc_response_frame *) skb->data;
*aid = le16_to_cpu(response_head->aid) & 0x3fff;
status_code = le16_to_cpu(response_head->status);
if ((status_code == WLAN_STATUS_ASSOC_DENIED_RATES ||
status_code == WLAN_STATUS_CAPS_UNSUPPORTED) &&
((ieee->mode == IEEE_G) &&
(ieee->current_network.mode == IEEE_N_24G) &&
(ieee->AsocRetryCount++ < (RT_ASOC_RETRY_LIMIT-1)))) {
ieee->pHTInfo->IOTAction |= HT_IOT_ACT_PURE_N_MODE;
} else {
ieee->AsocRetryCount = 0;
}
return le16_to_cpu(response_head->status);
}
void rtllib_rx_probe_rq(struct rtllib_device *ieee, struct sk_buff *skb)
{
u8 dest[ETH_ALEN];
ieee->softmac_stats.rx_probe_rq++;
if (probe_rq_parse(ieee, skb, dest) > 0) {
ieee->softmac_stats.tx_probe_rs++;
rtllib_resp_to_probe(ieee, dest);
}
}
static inline void rtllib_rx_auth_rq(struct rtllib_device *ieee,
struct sk_buff *skb)
{
u8 dest[ETH_ALEN];
int status;
ieee->softmac_stats.rx_auth_rq++;
status = auth_rq_parse(skb, dest);
if (status != -1)
rtllib_resp_to_auth(ieee, status, dest);
}
static inline void rtllib_rx_assoc_rq(struct rtllib_device *ieee,
struct sk_buff *skb)
{
u8 dest[ETH_ALEN];
ieee->softmac_stats.rx_ass_rq++;
if (assoc_rq_parse(skb, dest) != -1)
rtllib_resp_to_assoc_rq(ieee, dest);
printk(KERN_INFO"New client associated: %pM\n", dest);
}
void rtllib_sta_ps_send_null_frame(struct rtllib_device *ieee, short pwr)
{
struct sk_buff *buf = rtllib_null_func(ieee, pwr);
if (buf)
softmac_ps_mgmt_xmit(buf, ieee);
}
EXPORT_SYMBOL(rtllib_sta_ps_send_null_frame);
void rtllib_sta_ps_send_pspoll_frame(struct rtllib_device *ieee)
{
struct sk_buff *buf = rtllib_pspoll_func(ieee);
if (buf)
softmac_ps_mgmt_xmit(buf, ieee);
}
static short rtllib_sta_ps_sleep(struct rtllib_device *ieee, u64 *time)
{
int timeout = ieee->ps_timeout;
u8 dtim;
struct rt_pwr_save_ctrl *pPSC = (struct rt_pwr_save_ctrl *)
(&(ieee->PowerSaveControl));
if (ieee->LPSDelayCnt) {
ieee->LPSDelayCnt--;
return 0;
}
dtim = ieee->current_network.dtim_data;
if (!(dtim & RTLLIB_DTIM_VALID))
return 0;
timeout = ieee->current_network.beacon_interval;
ieee->current_network.dtim_data = RTLLIB_DTIM_INVALID;
/* there's no need to nofity AP that I find you buffered
* with broadcast packet */
if (dtim & (RTLLIB_DTIM_UCAST & ieee->ps))
return 2;
if (!time_after(jiffies, ieee->dev->trans_start + MSECS(timeout)))
return 0;
if (!time_after(jiffies, ieee->last_rx_ps_time + MSECS(timeout)))
return 0;
if ((ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE) &&
(ieee->mgmt_queue_tail != ieee->mgmt_queue_head))
return 0;
if (time) {
if (ieee->bAwakePktSent == true) {
pPSC->LPSAwakeIntvl = 1;
} else {
u8 MaxPeriod = 1;
if (pPSC->LPSAwakeIntvl == 0)
pPSC->LPSAwakeIntvl = 1;
if (pPSC->RegMaxLPSAwakeIntvl == 0)
MaxPeriod = 1;
else if (pPSC->RegMaxLPSAwakeIntvl == 0xFF)
MaxPeriod = ieee->current_network.dtim_period;
else
MaxPeriod = pPSC->RegMaxLPSAwakeIntvl;
pPSC->LPSAwakeIntvl = (pPSC->LPSAwakeIntvl >=
MaxPeriod) ? MaxPeriod :
(pPSC->LPSAwakeIntvl + 1);
}
{
u8 LPSAwakeIntvl_tmp = 0;
u8 period = ieee->current_network.dtim_period;
u8 count = ieee->current_network.tim.tim_count;
if (count == 0) {
if (pPSC->LPSAwakeIntvl > period)
LPSAwakeIntvl_tmp = period +
(pPSC->LPSAwakeIntvl -
period) -
((pPSC->LPSAwakeIntvl-period) %
period);
else
LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl;
} else {
if (pPSC->LPSAwakeIntvl >
ieee->current_network.tim.tim_count)
LPSAwakeIntvl_tmp = count +
(pPSC->LPSAwakeIntvl - count) -
((pPSC->LPSAwakeIntvl-count)%period);
else
LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl;
}
*time = ieee->current_network.last_dtim_sta_time
+ MSECS(ieee->current_network.beacon_interval *
LPSAwakeIntvl_tmp);
}
}
return 1;
}
static inline void rtllib_sta_ps(struct rtllib_device *ieee)
{
u64 time;
short sleep;
unsigned long flags, flags2;
spin_lock_irqsave(&ieee->lock, flags);
if ((ieee->ps == RTLLIB_PS_DISABLED ||
ieee->iw_mode != IW_MODE_INFRA ||
ieee->state != RTLLIB_LINKED)) {
RT_TRACE(COMP_DBG, "=====>%s(): no need to ps,wake up!! "
"ieee->ps is %d, ieee->iw_mode is %d, ieee->state"
" is %d\n", __func__, ieee->ps, ieee->iw_mode,
ieee->state);
spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
rtllib_sta_wakeup(ieee, 1);
spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
}
sleep = rtllib_sta_ps_sleep(ieee, &time);
/* 2 wake, 1 sleep, 0 do nothing */
if (sleep == 0)
goto out;
if (sleep == 1) {
if (ieee->sta_sleep == LPS_IS_SLEEP) {
ieee->enter_sleep_state(ieee->dev, time);
} else if (ieee->sta_sleep == LPS_IS_WAKE) {
spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
if (ieee->ps_is_queue_empty(ieee->dev)) {
ieee->sta_sleep = LPS_WAIT_NULL_DATA_SEND;
ieee->ack_tx_to_ieee = 1;
rtllib_sta_ps_send_null_frame(ieee, 1);
ieee->ps_time = time;
}
spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
}
ieee->bAwakePktSent = false;
} else if (sleep == 2) {
spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
rtllib_sta_wakeup(ieee, 1);
spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
}
out:
spin_unlock_irqrestore(&ieee->lock, flags);
}
void rtllib_sta_wakeup(struct rtllib_device *ieee, short nl)
{
if (ieee->sta_sleep == LPS_IS_WAKE) {
if (nl) {
if (ieee->pHTInfo->IOTAction &
HT_IOT_ACT_NULL_DATA_POWER_SAVING) {
ieee->ack_tx_to_ieee = 1;
rtllib_sta_ps_send_null_frame(ieee, 0);
} else {
ieee->ack_tx_to_ieee = 1;
rtllib_sta_ps_send_pspoll_frame(ieee);
}
}
return;
}
if (ieee->sta_sleep == LPS_IS_SLEEP)
ieee->sta_wake_up(ieee->dev);
if (nl) {
if (ieee->pHTInfo->IOTAction &
HT_IOT_ACT_NULL_DATA_POWER_SAVING) {
ieee->ack_tx_to_ieee = 1;
rtllib_sta_ps_send_null_frame(ieee, 0);
} else {
ieee->ack_tx_to_ieee = 1;
ieee->polling = true;
rtllib_sta_ps_send_pspoll_frame(ieee);
}
} else {
ieee->sta_sleep = LPS_IS_WAKE;
ieee->polling = false;
}
}
void rtllib_ps_tx_ack(struct rtllib_device *ieee, short success)
{
unsigned long flags, flags2;
spin_lock_irqsave(&ieee->lock, flags);
if (ieee->sta_sleep == LPS_WAIT_NULL_DATA_SEND) {
/* Null frame with PS bit set */
if (success) {
ieee->sta_sleep = LPS_IS_SLEEP;
ieee->enter_sleep_state(ieee->dev, ieee->ps_time);
}
/* if the card report not success we can't be sure the AP
* has not RXed so we can't assume the AP believe us awake
*/
} else {/* 21112005 - tx again null without PS bit if lost */
if ((ieee->sta_sleep == LPS_IS_WAKE) && !success) {
spin_lock_irqsave(&ieee->mgmt_tx_lock, flags2);
if (ieee->pHTInfo->IOTAction &
HT_IOT_ACT_NULL_DATA_POWER_SAVING)
rtllib_sta_ps_send_null_frame(ieee, 0);
else
rtllib_sta_ps_send_pspoll_frame(ieee);
spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
}
}
spin_unlock_irqrestore(&ieee->lock, flags);
}
EXPORT_SYMBOL(rtllib_ps_tx_ack);
static void rtllib_process_action(struct rtllib_device *ieee, struct sk_buff *skb)
{
struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
u8 *act = rtllib_get_payload((struct rtllib_hdr *)header);
u8 category = 0;
if (act == NULL) {
RTLLIB_DEBUG(RTLLIB_DL_ERR, "error to get payload of "
"action frame\n");
return;
}
category = *act;
act++;
switch (category) {
case ACT_CAT_BA:
switch (*act) {
case ACT_ADDBAREQ:
rtllib_rx_ADDBAReq(ieee, skb);
break;
case ACT_ADDBARSP:
rtllib_rx_ADDBARsp(ieee, skb);
break;
case ACT_DELBA:
rtllib_rx_DELBA(ieee, skb);
break;
}
break;
default:
break;
}
return;
}
inline int rtllib_rx_assoc_resp(struct rtllib_device *ieee, struct sk_buff *skb,
struct rtllib_rx_stats *rx_stats)
{
u16 errcode;
int aid;
u8 *ies;
struct rtllib_assoc_response_frame *assoc_resp;
struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
RTLLIB_DEBUG_MGMT("received [RE]ASSOCIATION RESPONSE (%d)\n",
WLAN_FC_GET_STYPE(header->frame_ctl));
if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATED &&
(ieee->iw_mode == IW_MODE_INFRA)) {
errcode = assoc_parse(ieee, skb, &aid);
if (0 == errcode) {
struct rtllib_network *network =
kzalloc(sizeof(struct rtllib_network),
GFP_ATOMIC);
if (!network)
return 1;
ieee->state = RTLLIB_LINKED;
ieee->assoc_id = aid;
ieee->softmac_stats.rx_ass_ok++;
/* station support qos */
/* Let the register setting default with Legacy station */
assoc_resp = (struct rtllib_assoc_response_frame *)skb->data;
if (ieee->current_network.qos_data.supported == 1) {
if (rtllib_parse_info_param(ieee, assoc_resp->info_element,
rx_stats->len - sizeof(*assoc_resp),
network, rx_stats)) {
kfree(network);
return 1;
} else {
memcpy(ieee->pHTInfo->PeerHTCapBuf,
network->bssht.bdHTCapBuf,
network->bssht.bdHTCapLen);
memcpy(ieee->pHTInfo->PeerHTInfoBuf,
network->bssht.bdHTInfoBuf,
network->bssht.bdHTInfoLen);
}
if (ieee->handle_assoc_response != NULL)
ieee->handle_assoc_response(ieee->dev,
(struct rtllib_assoc_response_frame *)header,
network);
}
kfree(network);
kfree(ieee->assocresp_ies);
ieee->assocresp_ies = NULL;
ies = &(assoc_resp->info_element[0].id);
ieee->assocresp_ies_len = (skb->data + skb->len) - ies;
ieee->assocresp_ies = kmalloc(ieee->assocresp_ies_len,
GFP_ATOMIC);
if (ieee->assocresp_ies)
memcpy(ieee->assocresp_ies, ies,
ieee->assocresp_ies_len);
else {
printk(KERN_INFO "%s()Warning: can't alloc "
"memory for assocresp_ies\n", __func__);
ieee->assocresp_ies_len = 0;
}
rtllib_associate_complete(ieee);
} else {
/* aid could not been allocated */
ieee->softmac_stats.rx_ass_err++;
printk(KERN_INFO "Association response status code 0x%x\n",
errcode);
RTLLIB_DEBUG_MGMT(
"Association response status code 0x%x\n",
errcode);
if (ieee->AsocRetryCount < RT_ASOC_RETRY_LIMIT)
queue_delayed_work_rsl(ieee->wq,
&ieee->associate_procedure_wq, 0);
else
rtllib_associate_abort(ieee);
}
}
return 0;
}
inline int rtllib_rx_auth(struct rtllib_device *ieee, struct sk_buff *skb,
struct rtllib_rx_stats *rx_stats)
{
u16 errcode;
u8 *challenge;
int chlen = 0;
bool bSupportNmode = true, bHalfSupportNmode = false;
if (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) {
if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING &&
(ieee->iw_mode == IW_MODE_INFRA)) {
RTLLIB_DEBUG_MGMT("Received authentication response");
errcode = auth_parse(skb, &challenge, &chlen);
if (0 == errcode) {
if (ieee->open_wep || !challenge) {
ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATED;
ieee->softmac_stats.rx_auth_rs_ok++;
if (!(ieee->pHTInfo->IOTAction &
HT_IOT_ACT_PURE_N_MODE)) {
if (!ieee->GetNmodeSupportBySecCfg(ieee->dev)) {
if (IsHTHalfNmodeAPs(ieee)) {
bSupportNmode = true;
bHalfSupportNmode = true;
} else {
bSupportNmode = false;
bHalfSupportNmode = false;
}
}
}
/* Dummy wirless mode setting to avoid
* encryption issue */
if (bSupportNmode) {
ieee->SetWirelessMode(ieee->dev,
ieee->current_network.mode);
} else {
/*TODO*/
ieee->SetWirelessMode(ieee->dev,
IEEE_G);
}
if (ieee->current_network.mode ==
IEEE_N_24G &&
bHalfSupportNmode == true) {
printk(KERN_INFO "======>enter "
"half N mode\n");
ieee->bHalfWirelessN24GMode =
true;
} else
ieee->bHalfWirelessN24GMode =
false;
rtllib_associate_step2(ieee);
} else {
rtllib_auth_challenge(ieee, challenge,
chlen);
}
} else {
ieee->softmac_stats.rx_auth_rs_err++;
RTLLIB_DEBUG_MGMT("Authentication respose"
" status code 0x%x", errcode);
printk(KERN_INFO "Authentication respose "
"status code 0x%x", errcode);
rtllib_associate_abort(ieee);
}
} else if (ieee->iw_mode == IW_MODE_MASTER) {
rtllib_rx_auth_rq(ieee, skb);
}
}
return 0;
}
inline int rtllib_rx_deauth(struct rtllib_device *ieee, struct sk_buff *skb)
{
struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
if (memcmp(header->addr3, ieee->current_network.bssid, ETH_ALEN) != 0)
return 0;
/* FIXME for now repeat all the association procedure
* both for disassociation and deauthentication
*/
if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
ieee->state == RTLLIB_LINKED &&
(ieee->iw_mode == IW_MODE_INFRA)) {
printk(KERN_INFO "==========>received disassoc/deauth(%x) "
"frame, reason code:%x\n",
WLAN_FC_GET_STYPE(header->frame_ctl),
((struct rtllib_disassoc *)skb->data)->reason);
ieee->state = RTLLIB_ASSOCIATING;
ieee->softmac_stats.reassoc++;
ieee->is_roaming = true;
ieee->LinkDetectInfo.bBusyTraffic = false;
rtllib_disassociate(ieee);
RemovePeerTS(ieee, header->addr2);
if (ieee->LedControlHandler != NULL)
ieee->LedControlHandler(ieee->dev,
LED_CTL_START_TO_LINK);
if (!(ieee->rtllib_ap_sec_type(ieee) &
(SEC_ALG_CCMP|SEC_ALG_TKIP)))
queue_delayed_work_rsl(ieee->wq,
&ieee->associate_procedure_wq, 5);
}
return 0;
}
inline int rtllib_rx_frame_softmac(struct rtllib_device *ieee,
struct sk_buff *skb,
struct rtllib_rx_stats *rx_stats, u16 type,
u16 stype)
{
struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
if (!ieee->proto_started)
return 0;
switch (WLAN_FC_GET_STYPE(header->frame_ctl)) {
case RTLLIB_STYPE_ASSOC_RESP:
case RTLLIB_STYPE_REASSOC_RESP:
if (rtllib_rx_assoc_resp(ieee, skb, rx_stats) == 1)
return 1;
break;
case RTLLIB_STYPE_ASSOC_REQ:
case RTLLIB_STYPE_REASSOC_REQ:
if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
ieee->iw_mode == IW_MODE_MASTER)
rtllib_rx_assoc_rq(ieee, skb);
break;
case RTLLIB_STYPE_AUTH:
rtllib_rx_auth(ieee, skb, rx_stats);
break;
case RTLLIB_STYPE_DISASSOC:
case RTLLIB_STYPE_DEAUTH:
rtllib_rx_deauth(ieee, skb);
break;
case RTLLIB_STYPE_MANAGE_ACT:
rtllib_process_action(ieee, skb);
break;
default:
return -1;
break;
}
return 0;
}
/* following are for a simplier TX queue management.
* Instead of using netif_[stop/wake]_queue the driver
* will uses these two function (plus a reset one), that
* will internally uses 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 want without take care
* to have enought room to TX an entire packet.
* This might be useful if each fragment need it's own
* descriptor, thus just keep a total free memory > than
* the max fragmentation treshold is not enought.. If the
* ieee802.11 stack passed a TXB struct then you needed
* 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
* to the driver later, when it wakes the queue.
*/
void rtllib_softmac_xmit(struct rtllib_txb *txb, struct rtllib_device *ieee)
{
unsigned int queue_index = txb->queue_index;
unsigned long flags;
int i;
struct cb_desc *tcb_desc = NULL;
unsigned long queue_len = 0;
spin_lock_irqsave(&ieee->lock, flags);
/* called with 2nd parm 0, no tx mgmt lock required */
rtllib_sta_wakeup(ieee, 0);
/* update the tx status */
tcb_desc = (struct cb_desc *)(txb->fragments[0]->cb +
MAX_DEV_ADDR_SIZE);
if (tcb_desc->bMulticast)
ieee->stats.multicast++;
/* if xmit available, just xmit it immediately, else just insert it to
* the wait queue */
for (i = 0; i < txb->nr_frags; i++) {
queue_len = skb_queue_len(&ieee->skb_waitQ[queue_index]);
if ((queue_len != 0) ||\
(!ieee->check_nic_enough_desc(ieee->dev, queue_index)) ||
(ieee->queue_stop)) {
/* insert the skb packet to the wait queue */
/* as for the completion function, it does not need
* to check it any more.
* */
if (queue_len < 200)
skb_queue_tail(&ieee->skb_waitQ[queue_index],
txb->fragments[i]);
else
kfree_skb(txb->fragments[i]);
} else {
ieee->softmac_data_hard_start_xmit(
txb->fragments[i],
ieee->dev, ieee->rate);
}
}
rtllib_txb_free(txb);
spin_unlock_irqrestore(&ieee->lock, flags);
}
/* called with ieee->lock acquired */
static void rtllib_resume_tx(struct rtllib_device *ieee)
{
int i;
for (i = ieee->tx_pending.frag; i < ieee->tx_pending.txb->nr_frags;
i++) {
if (ieee->queue_stop) {
ieee->tx_pending.frag = i;
return;
} else {
ieee->softmac_data_hard_start_xmit(
ieee->tx_pending.txb->fragments[i],
ieee->dev, ieee->rate);
ieee->stats.tx_packets++;
}
}
rtllib_txb_free(ieee->tx_pending.txb);
ieee->tx_pending.txb = NULL;
}
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_wake_queue(struct rtllib_device *ieee)
{
unsigned long flags;
struct sk_buff *skb;
struct rtllib_hdr_3addr *header;
spin_lock_irqsave(&ieee->lock, flags);
if (!ieee->queue_stop)
goto exit;
ieee->queue_stop = 0;
if (ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE) {
while (!ieee->queue_stop && (skb = dequeue_mgmt(ieee))) {
header = (struct rtllib_hdr_3addr *) skb->data;
header->seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
if (ieee->seq_ctrl[0] == 0xFFF)
ieee->seq_ctrl[0] = 0;
else
ieee->seq_ctrl[0]++;
ieee->softmac_data_hard_start_xmit(skb, ieee->dev,
ieee->basic_rate);
}
}
if (!ieee->queue_stop && ieee->tx_pending.txb)
rtllib_resume_tx(ieee);
if (!ieee->queue_stop && netif_queue_stopped(ieee->dev)) {
ieee->softmac_stats.swtxawake++;
netif_wake_queue(ieee->dev);
}
exit:
spin_unlock_irqrestore(&ieee->lock, flags);
}
void rtllib_stop_queue(struct rtllib_device *ieee)
{
if (!netif_queue_stopped(ieee->dev)) {
netif_stop_queue(ieee->dev);
ieee->softmac_stats.swtxstop++;
}
ieee->queue_stop = 1;
}
void rtllib_stop_all_queues(struct rtllib_device *ieee)
{
unsigned int i;
for (i = 0; i < ieee->dev->num_tx_queues; i++)
netdev_get_tx_queue(ieee->dev, i)->trans_start = jiffies;
netif_tx_stop_all_queues(ieee->dev);
}
void rtllib_wake_all_queues(struct rtllib_device *ieee)
{
netif_tx_wake_all_queues(ieee->dev);
}
inline void rtllib_randomize_cell(struct rtllib_device *ieee)
{
get_random_bytes(ieee->current_network.bssid, ETH_ALEN);
/* an IBSS cell address must have the two less significant
* bits of the first byte = 2
*/
ieee->current_network.bssid[0] &= ~0x01;
ieee->current_network.bssid[0] |= 0x02;
}
/* called in user context only */
void rtllib_start_master_bss(struct rtllib_device *ieee)
{
ieee->assoc_id = 1;
if (ieee->current_network.ssid_len == 0) {
strncpy(ieee->current_network.ssid,
RTLLIB_DEFAULT_TX_ESSID,
IW_ESSID_MAX_SIZE);
ieee->current_network.ssid_len =
strlen(RTLLIB_DEFAULT_TX_ESSID);
ieee->ssid_set = 1;
}
memcpy(ieee->current_network.bssid, ieee->dev->dev_addr, ETH_ALEN);
ieee->set_chan(ieee->dev, ieee->current_network.channel);
ieee->state = RTLLIB_LINKED;
ieee->link_change(ieee->dev);
notify_wx_assoc_event(ieee);
if (ieee->data_hard_resume)
ieee->data_hard_resume(ieee->dev);
netif_carrier_on(ieee->dev);
}
static void rtllib_start_monitor_mode(struct rtllib_device *ieee)
{
/* reset hardware status */
if (ieee->raw_tx) {
if (ieee->data_hard_resume)
ieee->data_hard_resume(ieee->dev);
netif_carrier_on(ieee->dev);
}
}
static void rtllib_start_ibss_wq(void *data)
{
struct rtllib_device *ieee = container_of_dwork_rsl(data,
struct rtllib_device, start_ibss_wq);
/* iwconfig mode ad-hoc will schedule this and return
* on the other hand this will block further iwconfig SET
* operations because of the wx_sem hold.
* Anyway some most set operations set a flag to speed-up
* (abort) this wq (when syncro scanning) before sleeping
* on the semaphore
*/
if (!ieee->proto_started) {
printk(KERN_INFO "==========oh driver down return\n");
return;
}
down(&ieee->wx_sem);
if (ieee->current_network.ssid_len == 0) {
strcpy(ieee->current_network.ssid, RTLLIB_DEFAULT_TX_ESSID);
ieee->current_network.ssid_len = strlen(RTLLIB_DEFAULT_TX_ESSID);
ieee->ssid_set = 1;
}
ieee->state = RTLLIB_NOLINK;
ieee->mode = IEEE_G;
/* check if we have this cell in our network list */
rtllib_softmac_check_all_nets(ieee);
/* if not then the state is not linked. Maybe the user swithced to
* ad-hoc mode just after being in monitor mode, or just after
* being very few time in managed mode (so the card have had no
* time to scan all the chans..) or we have just run up the iface
* after setting ad-hoc mode. So we have to give another try..
* Here, in ibss mode, should be safe to do this without extra care
* (in bss mode we had to make sure no-one tryed to associate when
* we had just checked the ieee->state and we was going to start the
* scan) beacause in ibss mode the rtllib_new_net function, when
* finds a good net, just set the ieee->state to RTLLIB_LINKED,
* so, at worst, we waste a bit of time to initiate an unneeded syncro
* scan, that will stop at the first round because it sees the state
* associated.
*/
if (ieee->state == RTLLIB_NOLINK)
rtllib_start_scan_syncro(ieee, 0);
/* the network definitively is not here.. create a new cell */
if (ieee->state == RTLLIB_NOLINK) {
printk(KERN_INFO "creating new IBSS cell\n");
ieee->current_network.channel = ieee->IbssStartChnl;
if (!ieee->wap_set)
rtllib_randomize_cell(ieee);
if (ieee->modulation & RTLLIB_CCK_MODULATION) {
ieee->current_network.rates_len = 4;
ieee->current_network.rates[0] =
RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_1MB;
ieee->current_network.rates[1] =
RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_2MB;
ieee->current_network.rates[2] =
RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_5MB;
ieee->current_network.rates[3] =
RTLLIB_BASIC_RATE_MASK | RTLLIB_CCK_RATE_11MB;
} else
ieee->current_network.rates_len = 0;
if (ieee->modulation & RTLLIB_OFDM_MODULATION) {
ieee->current_network.rates_ex_len = 8;
ieee->current_network.rates_ex[0] =
RTLLIB_OFDM_RATE_6MB;
ieee->current_network.rates_ex[1] =
RTLLIB_OFDM_RATE_9MB;
ieee->current_network.rates_ex[2] =
RTLLIB_OFDM_RATE_12MB;
ieee->current_network.rates_ex[3] =
RTLLIB_OFDM_RATE_18MB;
ieee->current_network.rates_ex[4] =
RTLLIB_OFDM_RATE_24MB;
ieee->current_network.rates_ex[5] =
RTLLIB_OFDM_RATE_36MB;
ieee->current_network.rates_ex[6] =
RTLLIB_OFDM_RATE_48MB;
ieee->current_network.rates_ex[7] =
RTLLIB_OFDM_RATE_54MB;
ieee->rate = 108;
} else {
ieee->current_network.rates_ex_len = 0;
ieee->rate = 22;
}
ieee->current_network.qos_data.supported = 0;
ieee->SetWirelessMode(ieee->dev, IEEE_G);
ieee->current_network.mode = ieee->mode;
ieee->current_network.atim_window = 0;
ieee->current_network.capability = WLAN_CAPABILITY_IBSS;
}
printk(KERN_INFO "%s(): ieee->mode = %d\n", __func__, ieee->mode);
if ((ieee->mode == IEEE_N_24G) || (ieee->mode == IEEE_N_5G))
HTUseDefaultSetting(ieee);
else
ieee->pHTInfo->bCurrentHTSupport = false;
ieee->SetHwRegHandler(ieee->dev, HW_VAR_MEDIA_STATUS,
(u8 *)(&ieee->state));
ieee->state = RTLLIB_LINKED;
ieee->link_change(ieee->dev);
HTSetConnectBwMode(ieee, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT);
if (ieee->LedControlHandler != NULL)
ieee->LedControlHandler(ieee->dev, LED_CTL_LINK);
rtllib_start_send_beacons(ieee);
notify_wx_assoc_event(ieee);
if (ieee->data_hard_resume)
ieee->data_hard_resume(ieee->dev);
netif_carrier_on(ieee->dev);
up(&ieee->wx_sem);
}
inline void rtllib_start_ibss(struct rtllib_device *ieee)
{
queue_delayed_work_rsl(ieee->wq, &ieee->start_ibss_wq, MSECS(150));
}
/* this is called only in user context, with wx_sem held */
void rtllib_start_bss(struct rtllib_device *ieee)
{
unsigned long flags;
if (IS_DOT11D_ENABLE(ieee) && !IS_COUNTRY_IE_VALID(ieee)) {
if (!ieee->bGlobalDomain)
return;
}
/* check if we have already found the net we
* are interested in (if any).
* if not (we are disassociated and we are not
* in associating / authenticating phase) start the background scanning.
*/
rtllib_softmac_check_all_nets(ieee);
/* ensure no-one start an associating process (thus setting
* the ieee->state to rtllib_ASSOCIATING) while we
* have just cheked it and we are going to enable scan.
* The rtllib_new_net function is always called with
* lock held (from both rtllib_softmac_check_all_nets and
* the rx path), so we cannot be in the middle of such function
*/
spin_lock_irqsave(&ieee->lock, flags);
if (ieee->state == RTLLIB_NOLINK)
rtllib_start_scan(ieee);
spin_unlock_irqrestore(&ieee->lock, flags);
}
static void rtllib_link_change_wq(void *data)
{
struct rtllib_device *ieee = container_of_dwork_rsl(data,
struct rtllib_device, link_change_wq);
ieee->link_change(ieee->dev);
}
/* called only in userspace context */
void rtllib_disassociate(struct rtllib_device *ieee)
{
netif_carrier_off(ieee->dev);
if (ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE)
rtllib_reset_queue(ieee);
if (ieee->data_hard_stop)
ieee->data_hard_stop(ieee->dev);
if (IS_DOT11D_ENABLE(ieee))
Dot11d_Reset(ieee);
ieee->state = RTLLIB_NOLINK;
ieee->is_set_key = false;
ieee->wap_set = 0;
queue_delayed_work_rsl(ieee->wq, &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;
down(&ieee->wx_sem);
if (!ieee->proto_started)
goto exit;
if (ieee->state != RTLLIB_ASSOCIATING_RETRY)
goto exit;
/* until we do not set the state to RTLLIB_NOLINK
* there are no possibility to have someone else trying
* to start an association procdure (we get here with
* ieee->state = RTLLIB_ASSOCIATING).
* When we set the state to RTLLIB_NOLINK it is possible
* that the RX path run an attempt to associate, but
* both rtllib_softmac_check_all_nets and the
* RX path works with ieee->lock held so there are no
* problems. If we are still disassociated then start a scan.
* the lock here is necessary to ensure no one try to start
* an association procedure when we have just checked the
* state and we are going to start the scan.
*/
ieee->beinretry = true;
ieee->state = RTLLIB_NOLINK;
rtllib_softmac_check_all_nets(ieee);
spin_lock_irqsave(&ieee->lock, flags);
if (ieee->state == RTLLIB_NOLINK)
rtllib_start_scan(ieee);
spin_unlock_irqrestore(&ieee->lock, flags);
ieee->beinretry = false;
exit:
up(&ieee->wx_sem);
}
struct sk_buff *rtllib_get_beacon_(struct rtllib_device *ieee)
{
u8 broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
struct sk_buff *skb;
struct rtllib_probe_response *b;
skb = rtllib_probe_resp(ieee, broadcast_addr);
if (!skb)
return NULL;
b = (struct rtllib_probe_response *) skb->data;
b->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_BEACON);
return skb;
}
struct sk_buff *rtllib_get_beacon(struct rtllib_device *ieee)
{
struct sk_buff *skb;
struct rtllib_probe_response *b;
skb = rtllib_get_beacon_(ieee);
if (!skb)
return NULL;
b = (struct rtllib_probe_response *) skb->data;
b->header.seq_ctl = cpu_to_le16(ieee->seq_ctrl[0] << 4);
if (ieee->seq_ctrl[0] == 0xFFF)
ieee->seq_ctrl[0] = 0;
else
ieee->seq_ctrl[0]++;
return skb;
}
EXPORT_SYMBOL(rtllib_get_beacon);
void rtllib_softmac_stop_protocol(struct rtllib_device *ieee, u8 mesh_flag,
u8 shutdown)
{
rtllib_stop_scan_syncro(ieee);
down(&ieee->wx_sem);
rtllib_stop_protocol(ieee, shutdown);
up(&ieee->wx_sem);
}
EXPORT_SYMBOL(rtllib_softmac_stop_protocol);
void rtllib_stop_protocol(struct rtllib_device *ieee, u8 shutdown)
{
if (!ieee->proto_started)
return;
if (shutdown) {
ieee->proto_started = 0;
ieee->proto_stoppping = 1;
if (ieee->rtllib_ips_leave != NULL)
ieee->rtllib_ips_leave(ieee->dev);
}
rtllib_stop_send_beacons(ieee);
del_timer_sync(&ieee->associate_timer);
cancel_delayed_work(&ieee->associate_retry_wq);
cancel_delayed_work(&ieee->start_ibss_wq);
cancel_delayed_work(&ieee->link_change_wq);
rtllib_stop_scan(ieee);
if (ieee->state <= RTLLIB_ASSOCIATING_AUTHENTICATED)
ieee->state = RTLLIB_NOLINK;
if (ieee->state == RTLLIB_LINKED) {
if (ieee->iw_mode == IW_MODE_INFRA)
SendDisassociation(ieee, 1, deauth_lv_ss);
rtllib_disassociate(ieee);
}
if (shutdown) {
RemoveAllTS(ieee);
ieee->proto_stoppping = 0;
}
kfree(ieee->assocreq_ies);
ieee->assocreq_ies = NULL;
ieee->assocreq_ies_len = 0;
kfree(ieee->assocresp_ies);
ieee->assocresp_ies = NULL;
ieee->assocresp_ies_len = 0;
}
void rtllib_softmac_start_protocol(struct rtllib_device *ieee, u8 mesh_flag)
{
down(&ieee->wx_sem);
rtllib_start_protocol(ieee);
up(&ieee->wx_sem);
}
EXPORT_SYMBOL(rtllib_softmac_start_protocol);
void rtllib_start_protocol(struct rtllib_device *ieee)
{
short ch = 0;
int i = 0;
rtllib_update_active_chan_map(ieee);
if (ieee->proto_started)
return;
ieee->proto_started = 1;
if (ieee->current_network.channel == 0) {
do {
ch++;
if (ch > MAX_CHANNEL_NUMBER)
return; /* no channel found */
} while (!ieee->active_channel_map[ch]);
ieee->current_network.channel = ch;
}
if (ieee->current_network.beacon_interval == 0)
ieee->current_network.beacon_interval = 100;
for (i = 0; i < 17; i++) {
ieee->last_rxseq_num[i] = -1;
ieee->last_rxfrag_num[i] = -1;
ieee->last_packet_time[i] = 0;
}
if (ieee->UpdateBeaconInterruptHandler)
ieee->UpdateBeaconInterruptHandler(ieee->dev, false);
ieee->wmm_acm = 0;
/* if the user set the MAC of the ad-hoc cell and then
* switch to managed mode, shall we make sure that association
* attempts does not fail just because the user provide the essid
* and the nic is still checking for the AP MAC ??
*/
if (ieee->iw_mode == IW_MODE_INFRA) {
rtllib_start_bss(ieee);
} else if (ieee->iw_mode == IW_MODE_ADHOC) {
if (ieee->UpdateBeaconInterruptHandler)
ieee->UpdateBeaconInterruptHandler(ieee->dev, true);
rtllib_start_ibss(ieee);
} else if (ieee->iw_mode == IW_MODE_MASTER) {
rtllib_start_master_bss(ieee);
} else if (ieee->iw_mode == IW_MODE_MONITOR) {
rtllib_start_monitor_mode(ieee);
}
}
void rtllib_softmac_init(struct rtllib_device *ieee)
{
int i;
memset(&ieee->current_network, 0, sizeof(struct rtllib_network));
ieee->state = RTLLIB_NOLINK;
for (i = 0; i < 5; i++)
ieee->seq_ctrl[i] = 0;
ieee->pDot11dInfo = kzalloc(sizeof(struct rt_dot11d_info), GFP_ATOMIC);
if (!ieee->pDot11dInfo)
RTLLIB_DEBUG(RTLLIB_DL_ERR, "can't alloc memory for DOT11D\n");
ieee->LinkDetectInfo.SlotIndex = 0;
ieee->LinkDetectInfo.SlotNum = 2;
ieee->LinkDetectInfo.NumRecvBcnInPeriod = 0;
ieee->LinkDetectInfo.NumRecvDataInPeriod = 0;
ieee->LinkDetectInfo.NumTxOkInPeriod = 0;
ieee->LinkDetectInfo.NumRxOkInPeriod = 0;
ieee->LinkDetectInfo.NumRxUnicastOkInPeriod = 0;
ieee->bIsAggregateFrame = false;
ieee->assoc_id = 0;
ieee->queue_stop = 0;
ieee->scanning_continue = 0;
ieee->softmac_features = 0;
ieee->wap_set = 0;
ieee->ssid_set = 0;
ieee->proto_started = 0;
ieee->proto_stoppping = 0;
ieee->basic_rate = RTLLIB_DEFAULT_BASIC_RATE;
ieee->rate = 22;
ieee->ps = RTLLIB_PS_DISABLED;
ieee->sta_sleep = LPS_IS_WAKE;
ieee->Regdot11HTOperationalRateSet[0] = 0xff;
ieee->Regdot11HTOperationalRateSet[1] = 0xff;
ieee->Regdot11HTOperationalRateSet[4] = 0x01;
ieee->Regdot11TxHTOperationalRateSet[0] = 0xff;
ieee->Regdot11TxHTOperationalRateSet[1] = 0xff;
ieee->Regdot11TxHTOperationalRateSet[4] = 0x01;
ieee->FirstIe_InScan = false;
ieee->actscanning = false;
ieee->beinretry = false;
ieee->is_set_key = false;
init_mgmt_queue(ieee);
ieee->sta_edca_param[0] = 0x0000A403;
ieee->sta_edca_param[1] = 0x0000A427;
ieee->sta_edca_param[2] = 0x005E4342;
ieee->sta_edca_param[3] = 0x002F3262;
ieee->aggregation = true;
ieee->enable_rx_imm_BA = 1;
ieee->tx_pending.txb = NULL;
_setup_timer(&ieee->associate_timer,
rtllib_associate_abort_cb,
(unsigned long) ieee);
_setup_timer(&ieee->beacon_timer,
rtllib_send_beacon_cb,
(unsigned long) ieee);
ieee->wq = create_workqueue(DRV_NAME);
INIT_DELAYED_WORK_RSL(&ieee->link_change_wq,
(void *)rtllib_link_change_wq, ieee);
INIT_DELAYED_WORK_RSL(&ieee->start_ibss_wq,
(void *)rtllib_start_ibss_wq, ieee);
INIT_WORK_RSL(&ieee->associate_complete_wq,
(void *)rtllib_associate_complete_wq, ieee);
INIT_DELAYED_WORK_RSL(&ieee->associate_procedure_wq,
(void *)rtllib_associate_procedure_wq, ieee);
INIT_DELAYED_WORK_RSL(&ieee->softmac_scan_wq,
(void *)rtllib_softmac_scan_wq, ieee);
INIT_DELAYED_WORK_RSL(&ieee->softmac_hint11d_wq,
(void *)rtllib_softmac_hint11d_wq, ieee);
INIT_DELAYED_WORK_RSL(&ieee->associate_retry_wq,
(void *)rtllib_associate_retry_wq, ieee);
INIT_WORK_RSL(&ieee->wx_sync_scan_wq, (void *)rtllib_wx_sync_scan_wq,
ieee);
sema_init(&ieee->wx_sem, 1);
sema_init(&ieee->scan_sem, 1);
sema_init(&ieee->ips_sem, 1);
spin_lock_init(&ieee->mgmt_tx_lock);
spin_lock_init(&ieee->beacon_lock);
tasklet_init(&ieee->ps_task,
(void(*)(unsigned long)) rtllib_sta_ps,
(unsigned long)ieee);
}
void rtllib_softmac_free(struct rtllib_device *ieee)
{
down(&ieee->wx_sem);
kfree(ieee->pDot11dInfo);
ieee->pDot11dInfo = NULL;
del_timer_sync(&ieee->associate_timer);
cancel_delayed_work(&ieee->associate_retry_wq);
destroy_workqueue(ieee->wq);
up(&ieee->wx_sem);
}
/********************************************************
* Start of WPA code. *
* this is stolen from the ipw2200 driver *
********************************************************/
static int rtllib_wpa_enable(struct rtllib_device *ieee, int value)
{
/* This is called when wpa_supplicant loads and closes the driver
* interface. */
printk(KERN_INFO "%s WPA\n", value ? "enabling" : "disabling");
ieee->wpa_enabled = value;
memset(ieee->ap_mac_addr, 0, 6);
return 0;
}
static void rtllib_wpa_assoc_frame(struct rtllib_device *ieee, char *wpa_ie,
int wpa_ie_len)
{
/* make sure WPA is enabled */
rtllib_wpa_enable(ieee, 1);
rtllib_disassociate(ieee);
}
static int rtllib_wpa_mlme(struct rtllib_device *ieee, int command, int reason)
{
int ret = 0;
switch (command) {
case IEEE_MLME_STA_DEAUTH:
break;
case IEEE_MLME_STA_DISASSOC:
rtllib_disassociate(ieee);
break;
default:
printk(KERN_INFO "Unknown MLME request: %d\n", command);
ret = -EOPNOTSUPP;
}
return ret;
}
static int rtllib_wpa_set_wpa_ie(struct rtllib_device *ieee,
struct ieee_param *param, int plen)
{
u8 *buf;
if (param->u.wpa_ie.len > MAX_WPA_IE_LEN ||
(param->u.wpa_ie.len && param->u.wpa_ie.data == NULL))
return -EINVAL;
if (param->u.wpa_ie.len) {
buf = kmemdup(param->u.wpa_ie.data, param->u.wpa_ie.len,
GFP_KERNEL);
if (buf == NULL)
return -ENOMEM;
kfree(ieee->wpa_ie);
ieee->wpa_ie = buf;
ieee->wpa_ie_len = param->u.wpa_ie.len;
} else {
kfree(ieee->wpa_ie);
ieee->wpa_ie = NULL;
ieee->wpa_ie_len = 0;
}
rtllib_wpa_assoc_frame(ieee, ieee->wpa_ie, ieee->wpa_ie_len);
return 0;
}
#define AUTH_ALG_OPEN_SYSTEM 0x1
#define AUTH_ALG_SHARED_KEY 0x2
#define AUTH_ALG_LEAP 0x4
static int rtllib_wpa_set_auth_algs(struct rtllib_device *ieee, int value)
{
struct rtllib_security sec = {
.flags = SEC_AUTH_MODE,
};
int ret = 0;
if (value & AUTH_ALG_SHARED_KEY) {
sec.auth_mode = WLAN_AUTH_SHARED_KEY;
ieee->open_wep = 0;
ieee->auth_mode = 1;
} else if (value & AUTH_ALG_OPEN_SYSTEM) {
sec.auth_mode = WLAN_AUTH_OPEN;
ieee->open_wep = 1;
ieee->auth_mode = 0;
} else if (value & AUTH_ALG_LEAP) {
sec.auth_mode = WLAN_AUTH_LEAP >> 6;
ieee->open_wep = 1;
ieee->auth_mode = 2;
}
if (ieee->set_security)
ieee->set_security(ieee->dev, &sec);
return ret;
}
static int rtllib_wpa_set_param(struct rtllib_device *ieee, u8 name, u32 value)
{
int ret = 0;
unsigned long flags;
switch (name) {
case IEEE_PARAM_WPA_ENABLED:
ret = rtllib_wpa_enable(ieee, value);
break;
case IEEE_PARAM_TKIP_COUNTERMEASURES:
ieee->tkip_countermeasures = value;
break;
case IEEE_PARAM_DROP_UNENCRYPTED:
{
/* HACK:
*
* wpa_supplicant calls set_wpa_enabled when the driver
* is loaded and unloaded, regardless of if WPA is being
* used. No other calls are made which can be used to
* determine if encryption will be used or not prior to
* association being expected. If encryption is not being
* used, drop_unencrypted is set to false, else true -- we
* can use this to determine if the CAP_PRIVACY_ON bit should
* be set.
*/
struct rtllib_security sec = {
.flags = SEC_ENABLED,
.enabled = value,
};
ieee->drop_unencrypted = value;
/* We only change SEC_LEVEL for open mode. Others
* are set by ipw_wpa_set_encryption.
*/
if (!value) {
sec.flags |= SEC_LEVEL;
sec.level = SEC_LEVEL_0;
} else {
sec.flags |= SEC_LEVEL;
sec.level = SEC_LEVEL_1;
}
if (ieee->set_security)
ieee->set_security(ieee->dev, &sec);
break;
}
case IEEE_PARAM_PRIVACY_INVOKED:
ieee->privacy_invoked = value;
break;
case IEEE_PARAM_AUTH_ALGS:
ret = rtllib_wpa_set_auth_algs(ieee, value);
break;
case IEEE_PARAM_IEEE_802_1X:
ieee->ieee802_1x = value;
break;
case IEEE_PARAM_WPAX_SELECT:
spin_lock_irqsave(&ieee->wpax_suitlist_lock, flags);
spin_unlock_irqrestore(&ieee->wpax_suitlist_lock, flags);
break;
default:
printk(KERN_INFO "Unknown WPA param: %d\n", name);
ret = -EOPNOTSUPP;
}
return ret;
}
/* implementation borrowed from hostap driver */
static int rtllib_wpa_set_encryption(struct rtllib_device *ieee,
struct ieee_param *param, int param_len,
u8 is_mesh)
{
int ret = 0;
struct lib80211_crypto_ops *ops;
struct lib80211_crypt_data **crypt;
struct rtllib_security sec = {
.flags = 0,
};
param->u.crypt.err = 0;
param->u.crypt.alg[IEEE_CRYPT_ALG_NAME_LEN - 1] = '\0';
if (param_len !=
(int) ((char *) param->u.crypt.key - (char *) param) +
param->u.crypt.key_len) {
printk(KERN_INFO "Len mismatch %d, %d\n", param_len,
param->u.crypt.key_len);
return -EINVAL;
}
if (param->sta_addr[0] == 0xff && param->sta_addr[1] == 0xff &&
param->sta_addr[2] == 0xff && param->sta_addr[3] == 0xff &&
param->sta_addr[4] == 0xff && param->sta_addr[5] == 0xff) {
if (param->u.crypt.idx >= NUM_WEP_KEYS)
return -EINVAL;
crypt = &ieee->crypt_info.crypt[param->u.crypt.idx];
} else {
return -EINVAL;
}
if (strcmp(param->u.crypt.alg, "none") == 0) {
if (crypt) {
sec.enabled = 0;
sec.level = SEC_LEVEL_0;
sec.flags |= SEC_ENABLED | SEC_LEVEL;
lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
}
goto done;
}
sec.enabled = 1;
sec.flags |= SEC_ENABLED;
/* IPW HW cannot build TKIP MIC, host decryption still needed. */
if (!(ieee->host_encrypt || ieee->host_decrypt) &&
strcmp(param->u.crypt.alg, "R-TKIP"))
goto skip_host_crypt;
ops = lib80211_get_crypto_ops(param->u.crypt.alg);
if (ops == NULL && strcmp(param->u.crypt.alg, "R-WEP") == 0) {
request_module("rtllib_crypt_wep");
ops = lib80211_get_crypto_ops(param->u.crypt.alg);
} else if (ops == NULL && strcmp(param->u.crypt.alg, "R-TKIP") == 0) {
request_module("rtllib_crypt_tkip");
ops = lib80211_get_crypto_ops(param->u.crypt.alg);
} else if (ops == NULL && strcmp(param->u.crypt.alg, "R-CCMP") == 0) {
request_module("rtllib_crypt_ccmp");
ops = lib80211_get_crypto_ops(param->u.crypt.alg);
}
if (ops == NULL) {
printk(KERN_INFO "unknown crypto alg '%s'\n",
param->u.crypt.alg);
param->u.crypt.err = IEEE_CRYPT_ERR_UNKNOWN_ALG;
ret = -EINVAL;
goto done;
}
if (*crypt == NULL || (*crypt)->ops != ops) {
struct lib80211_crypt_data *new_crypt;
lib80211_crypt_delayed_deinit(&ieee->crypt_info, crypt);
new_crypt = (struct lib80211_crypt_data *)
kmalloc(sizeof(*new_crypt), GFP_KERNEL);
if (new_crypt == NULL) {
ret = -ENOMEM;
goto done;
}
memset(new_crypt, 0, sizeof(struct lib80211_crypt_data));
new_crypt->ops = ops;
if (new_crypt->ops)
new_crypt->priv =
new_crypt->ops->init(param->u.crypt.idx);
if (new_crypt->priv == NULL) {
kfree(new_crypt);
param->u.crypt.err = IEEE_CRYPT_ERR_CRYPT_INIT_FAILED;
ret = -EINVAL;
goto done;
}
*crypt = new_crypt;
}
if (param->u.crypt.key_len > 0 && (*crypt)->ops->set_key &&
(*crypt)->ops->set_key(param->u.crypt.key,
param->u.crypt.key_len, param->u.crypt.seq,
(*crypt)->priv) < 0) {
printk(KERN_INFO "key setting failed\n");
param->u.crypt.err = IEEE_CRYPT_ERR_KEY_SET_FAILED;
ret = -EINVAL;
goto done;
}
skip_host_crypt:
if (param->u.crypt.set_tx) {
ieee->crypt_info.tx_keyidx = param->u.crypt.idx;
sec.active_key = param->u.crypt.idx;
sec.flags |= SEC_ACTIVE_KEY;
} else
sec.flags &= ~SEC_ACTIVE_KEY;
if (param->u.crypt.alg != NULL) {
memcpy(sec.keys[param->u.crypt.idx],
param->u.crypt.key,
param->u.crypt.key_len);
sec.key_sizes[param->u.crypt.idx] = param->u.crypt.key_len;
sec.flags |= (1 << param->u.crypt.idx);
if (strcmp(param->u.crypt.alg, "R-WEP") == 0) {
sec.flags |= SEC_LEVEL;
sec.level = SEC_LEVEL_1;
} else if (strcmp(param->u.crypt.alg, "R-TKIP") == 0) {
sec.flags |= SEC_LEVEL;
sec.level = SEC_LEVEL_2;
} else if (strcmp(param->u.crypt.alg, "R-CCMP") == 0) {
sec.flags |= SEC_LEVEL;
sec.level = SEC_LEVEL_3;
}
}
done:
if (ieee->set_security)
ieee->set_security(ieee->dev, &sec);
/* Do not reset port if card is in Managed mode since resetting will
* generate new IEEE 802.11 authentication which may end up in looping
* with IEEE 802.1X. If your hardware requires a reset after WEP
* configuration (for example... Prism2), implement the reset_port in
* the callbacks structures used to initialize the 802.11 stack. */
if (ieee->reset_on_keychange &&
ieee->iw_mode != IW_MODE_INFRA &&
ieee->reset_port &&
ieee->reset_port(ieee->dev)) {
printk(KERN_INFO "reset_port failed\n");
param->u.crypt.err = IEEE_CRYPT_ERR_CARD_CONF_FAILED;
return -EINVAL;
}
return ret;
}
inline struct sk_buff *rtllib_disauth_skb(struct rtllib_network *beacon,
struct rtllib_device *ieee, u16 asRsn)
{
struct sk_buff *skb;
struct rtllib_disauth *disauth;
int len = sizeof(struct rtllib_disauth) + ieee->tx_headroom;
skb = dev_alloc_skb(len);
if (!skb)
return NULL;
skb_reserve(skb, ieee->tx_headroom);
disauth = (struct rtllib_disauth *) skb_put(skb,
sizeof(struct rtllib_disauth));
disauth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DEAUTH);
disauth->header.duration_id = 0;
memcpy(disauth->header.addr1, beacon->bssid, ETH_ALEN);
memcpy(disauth->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
memcpy(disauth->header.addr3, beacon->bssid, ETH_ALEN);
disauth->reason = cpu_to_le16(asRsn);
return skb;
}
inline struct sk_buff *rtllib_disassociate_skb(struct rtllib_network *beacon,
struct rtllib_device *ieee, u16 asRsn)
{
struct sk_buff *skb;
struct rtllib_disassoc *disass;
int len = sizeof(struct rtllib_disassoc) + ieee->tx_headroom;
skb = dev_alloc_skb(len);
if (!skb)
return NULL;
skb_reserve(skb, ieee->tx_headroom);
disass = (struct rtllib_disassoc *) skb_put(skb,
sizeof(struct rtllib_disassoc));
disass->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_DISASSOC);
disass->header.duration_id = 0;
memcpy(disass->header.addr1, beacon->bssid, ETH_ALEN);
memcpy(disass->header.addr2, ieee->dev->dev_addr, ETH_ALEN);
memcpy(disass->header.addr3, beacon->bssid, ETH_ALEN);
disass->reason = cpu_to_le16(asRsn);
return skb;
}
void SendDisassociation(struct rtllib_device *ieee, bool deauth, u16 asRsn)
{
struct rtllib_network *beacon = &ieee->current_network;
struct sk_buff *skb;
if (deauth)
skb = rtllib_disauth_skb(beacon, ieee, asRsn);
else
skb = rtllib_disassociate_skb(beacon, ieee, asRsn);
if (skb)
softmac_mgmt_xmit(skb, ieee);
}
u8 rtllib_ap_sec_type(struct rtllib_device *ieee)
{
static u8 ccmp_ie[4] = {0x00, 0x50, 0xf2, 0x04};
static u8 ccmp_rsn_ie[4] = {0x00, 0x0f, 0xac, 0x04};
int wpa_ie_len = ieee->wpa_ie_len;
struct lib80211_crypt_data *crypt;
int encrypt;
crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
encrypt = (ieee->current_network.capability & WLAN_CAPABILITY_PRIVACY)
|| (ieee->host_encrypt && crypt && crypt->ops &&
(0 == strcmp(crypt->ops->name, "R-WEP")));
/* 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;
}
}
int rtllib_wpa_supplicant_ioctl(struct rtllib_device *ieee, struct iw_point *p,
u8 is_mesh)
{
struct ieee_param *param;
int ret = 0;
down(&ieee->wx_sem);
if (p->length < sizeof(struct ieee_param) || !p->pointer) {
ret = -EINVAL;
goto out;
}
param = kmalloc(p->length, GFP_KERNEL);
if (param == NULL) {
ret = -ENOMEM;
goto out;
}
if (copy_from_user(param, p->pointer, p->length)) {
kfree(param);
ret = -EFAULT;
goto out;
}
switch (param->cmd) {
case IEEE_CMD_SET_WPA_PARAM:
ret = rtllib_wpa_set_param(ieee, param->u.wpa_param.name,
param->u.wpa_param.value);
break;
case IEEE_CMD_SET_WPA_IE:
ret = rtllib_wpa_set_wpa_ie(ieee, param, p->length);
break;
case IEEE_CMD_SET_ENCRYPTION:
ret = rtllib_wpa_set_encryption(ieee, param, p->length, 0);
break;
case IEEE_CMD_MLME:
ret = rtllib_wpa_mlme(ieee, param->u.mlme.command,
param->u.mlme.reason_code);
break;
default:
printk(KERN_INFO "Unknown WPA supplicant request: %d\n",
param->cmd);
ret = -EOPNOTSUPP;
break;
}
if (ret == 0 && copy_to_user(p->pointer, param, p->length))
ret = -EFAULT;
kfree(param);
out:
up(&ieee->wx_sem);
return ret;
}
EXPORT_SYMBOL(rtllib_wpa_supplicant_ioctl);
void rtllib_MgntDisconnectIBSS(struct rtllib_device *rtllib)
{
u8 OpMode;
u8 i;
bool bFilterOutNonAssociatedBSSID = false;
rtllib->state = RTLLIB_NOLINK;
for (i = 0; i < 6; i++)
rtllib->current_network.bssid[i] = 0x55;
rtllib->OpMode = RT_OP_MODE_NO_LINK;
rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID,
rtllib->current_network.bssid);
OpMode = RT_OP_MODE_NO_LINK;
rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS, &OpMode);
rtllib_stop_send_beacons(rtllib);
bFilterOutNonAssociatedBSSID = false;
rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID,
(u8 *)(&bFilterOutNonAssociatedBSSID));
notify_wx_assoc_event(rtllib);
}
void rtllib_MlmeDisassociateRequest(struct rtllib_device *rtllib, u8 *asSta,
u8 asRsn)
{
u8 i;
u8 OpMode;
RemovePeerTS(rtllib, asSta);
if (memcpy(rtllib->current_network.bssid, asSta, 6) == NULL) {
rtllib->state = RTLLIB_NOLINK;
for (i = 0; i < 6; i++)
rtllib->current_network.bssid[i] = 0x22;
OpMode = RT_OP_MODE_NO_LINK;
rtllib->OpMode = RT_OP_MODE_NO_LINK;
rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_MEDIA_STATUS,
(u8 *)(&OpMode));
rtllib_disassociate(rtllib);
rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_BSSID,
rtllib->current_network.bssid);
}
}
void
rtllib_MgntDisconnectAP(
struct rtllib_device *rtllib,
u8 asRsn
)
{
bool bFilterOutNonAssociatedBSSID = false;
bFilterOutNonAssociatedBSSID = false;
rtllib->SetHwRegHandler(rtllib->dev, HW_VAR_CECHK_BSSID,
(u8 *)(&bFilterOutNonAssociatedBSSID));
rtllib_MlmeDisassociateRequest(rtllib, rtllib->current_network.bssid,
asRsn);
rtllib->state = RTLLIB_NOLINK;
}
bool rtllib_MgntDisconnect(struct rtllib_device *rtllib, u8 asRsn)
{
if (rtllib->ps != RTLLIB_PS_DISABLED)
rtllib->sta_wake_up(rtllib->dev);
if (rtllib->state == RTLLIB_LINKED) {
if (rtllib->iw_mode == IW_MODE_ADHOC)
rtllib_MgntDisconnectIBSS(rtllib);
if (rtllib->iw_mode == IW_MODE_INFRA)
rtllib_MgntDisconnectAP(rtllib, asRsn);
}
return true;
}
EXPORT_SYMBOL(rtllib_MgntDisconnect);
void notify_wx_assoc_event(struct rtllib_device *ieee)
{
union iwreq_data wrqu;
if (ieee->cannot_notify)
return;
wrqu.ap_addr.sa_family = ARPHRD_ETHER;
if (ieee->state == RTLLIB_LINKED)
memcpy(wrqu.ap_addr.sa_data, ieee->current_network.bssid,
ETH_ALEN);
else {
printk(KERN_INFO "%s(): Tell user space disconnected\n",
__func__);
memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
}
wireless_send_event(ieee->dev, SIOCGIWAP, &wrqu, NULL);
}
EXPORT_SYMBOL(notify_wx_assoc_event);