blob: 6e2f620afd14025bbc08dfff1c9805e4c5400a48 [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0
/* IEEE 802.11 SoftMAC layer
* Copyright (c) 2005 Andrea Merello <andrea.merello@gmail.com>
*
* Mostly extracted from the rtl8180-sa2400 driver for the
* in-kernel generic ieee802.11 stack.
*
* Few lines might be stolen from other part of the rtllib
* stack. Copyright who own it's copyright
*
* WPA code stolen from the ipw2200 driver.
* Copyright who own it's copyright.
*/
#include "rtllib.h"
#include <linux/random.h>
#include <linux/delay.h>
#include <linux/uaccess.h>
#include <linux/etherdevice.h>
#include <linux/ieee80211.h>
#include "dot11d.h"
static void rtllib_sta_wakeup(struct rtllib_device *ieee, short nl);
static short rtllib_is_54g(struct rtllib_network *net)
{
return (net->rates_ex_len > 0) || (net->rates_len > 4);
}
/* returns the total length needed for placing the RATE MFIE
* tag and the EXTENDED RATE MFIE tag if needed.
* It encludes two bytes per tag for the tag itself and its len
*/
static unsigned int rtllib_MFIE_rate_len(struct rtllib_device *ieee)
{
unsigned int rate_len = 0;
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;
}
/* place the MFIE rate, tag to the memory (double) pointed.
* Then it updates the pointer so that
* it points after the new MFIE tag added.
*/
static void rtllib_MFIE_Brate(struct rtllib_device *ieee, u8 **tag_p)
{
u8 *tag = *tag_p;
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;
}
static void rtllib_TURBO_Info(struct rtllib_device *ieee, u8 **tag_p)
{
u8 *tag = *tag_p;
*tag++ = MFIE_TYPE_GENERIC;
*tag++ = 7;
*tag++ = 0x00;
*tag++ = 0xe0;
*tag++ = 0x4c;
*tag++ = 0x01;
*tag++ = 0x02;
*tag++ = 0x11;
*tag++ = 0x00;
*tag_p = tag;
netdev_alert(ieee->dev, "This is enable turbo mode IE process\n");
}
static void enqueue_mgmt(struct rtllib_device *ieee, struct sk_buff *skb)
{
int nh;
nh = (ieee->mgmt_queue_head + 1) % MGMT_QUEUE_NUM;
/* if the queue is full but we have newer frames then
* just overwrites the oldest.
*
* if (nh == ieee->mgmt_queue_tail)
* return -1;
*/
ieee->mgmt_queue_head = nh;
ieee->mgmt_queue_ring[nh] = skb;
}
static void init_mgmt_queue(struct rtllib_device *ieee)
{
ieee->mgmt_queue_tail = 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;
netdev_info(ieee->dev, "No BasicRate found!!\n");
}
return QueryRate;
}
static 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 (le16_to_cpu(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 whether the managed packet queued greater than 5 */
if (!ieee->check_nic_enough_desc(ieee->dev,
tcb_desc->queue_index) ||
skb_queue_len(&ieee->skb_waitQ[tcb_desc->queue_index]) ||
ieee->queue_stop) {
/* insert the skb packet to the management queue
*
* as for the completion function, it does not need
* to check it any more.
*/
netdev_info(ieee->dev,
"%s():insert to waitqueue, queue_index:%d!\n",
__func__, tcb_desc->queue_index);
skb_queue_tail(&ieee->skb_waitQ[tcb_desc->queue_index],
skb);
} else {
ieee->softmac_hard_start_xmit(skb, ieee->dev);
}
spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags);
}
}
static inline void
softmac_ps_mgmt_xmit(struct sk_buff *skb,
struct rtllib_device *ieee)
{
short single = ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE;
struct 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 = le16_to_cpu(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);
}
}
static inline struct sk_buff *rtllib_probe_req(struct rtllib_device *ieee)
{
unsigned int len, rate_len;
u8 *tag;
struct sk_buff *skb;
struct rtllib_probe_request *req;
len = ieee->current_network.ssid_len;
rate_len = rtllib_MFIE_rate_len(ieee);
skb = dev_alloc_skb(sizeof(struct rtllib_probe_request) +
2 + len + rate_len + ieee->tx_headroom);
if (!skb)
return NULL;
skb_reserve(skb, ieee->tx_headroom);
req = skb_put(skb, sizeof(struct rtllib_probe_request));
req->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_PROBE_REQ);
req->header.duration_id = 0;
eth_broadcast_addr(req->header.addr1);
ether_addr_copy(req->header.addr2, ieee->dev->dev_addr);
eth_broadcast_addr(req->header.addr3);
tag = skb_put(skb, len + 2 + rate_len);
*tag++ = MFIE_TYPE_SSID;
*tag++ = len;
memcpy(tag, ieee->current_network.ssid, len);
tag += len;
rtllib_MFIE_Brate(ieee, &tag);
rtllib_MFIE_Grate(ieee, &tag);
return skb;
}
static 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_to_jiffies(ieee->current_network.beacon_interval - 5)));
}
static void rtllib_send_beacon_cb(struct timer_list *t)
{
struct rtllib_device *ieee =
from_timer(ieee, t, beacon_timer);
unsigned long flags;
spin_lock_irqsave(&ieee->beacon_lock, flags);
rtllib_send_beacon(ieee);
spin_unlock_irqrestore(&ieee->beacon_lock, flags);
}
/* Enables 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);
netdev_info(dev, "========>Enter Monitor Mode\n");
ieee->AllowAllDestAddrHandler(dev, true, !bInitState);
}
/* Disables 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);
netdev_info(dev, "========>Exit Monitor Mode\n");
ieee->AllowAllDestAddrHandler(dev, false, !bInitState);
}
/* 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);
netdev_info(dev, "========>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);
/* 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);
netdev_info(dev, "========>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++;
}
}
static 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_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.
*/
static 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;
mutex_lock(&ieee->scan_mutex);
while (1) {
do {
ch++;
if (ch > MAX_CHANNEL_NUMBER)
goto out; /* scan completed */
} while (!ieee->active_channel_map[ch]);
/* this function can be called in two situations
* 1- We have switched to ad-hoc mode and we are
* performing a complete syncro scan before conclude
* there are no interesting cell and to create a
* new one. In this case the link state is
* 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 which 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) {
netdev_info(ieee->dev,
"============>sync_scan_hurryup out\n");
goto out;
}
ieee->set_chan(ieee->dev, ch);
if (ieee->active_channel_map[ch] == 1)
rtllib_send_probe_requests(ieee, 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_scan_complete(ieee);
}
mutex_unlock(&ieee->scan_mutex);
ieee->be_scan_inprogress = false;
memset(&wrqu, 0, sizeof(wrqu));
wireless_send_event(ieee->dev, SIOCGIWSCAN, &wrqu, NULL);
}
static void rtllib_softmac_scan_wq(void *data)
{
struct rtllib_device *ieee = container_of_dwork_rsl(data,
struct rtllib_device, softmac_scan_wq);
u8 last_channel = ieee->current_network.channel;
rtllib_update_active_chan_map(ieee);
if (!ieee->ieee_up)
return;
if (rtllib_act_scanning(ieee, true))
return;
mutex_lock(&ieee->scan_mutex);
if (ieee->eRFPowerState == eRfOff) {
netdev_info(ieee->dev,
"======>%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);
schedule_delayed_work(&ieee->softmac_scan_wq,
msecs_to_jiffies(RTLLIB_SOFTMAC_SCAN_TIME));
mutex_unlock(&ieee->scan_mutex);
return;
out:
if (IS_DOT11D_ENABLE(ieee))
dot11d_scan_complete(ieee);
ieee->current_network.channel = last_channel;
out1:
ieee->actscanning = false;
ieee->scan_watch_dog = 0;
ieee->scanning_continue = 0;
mutex_unlock(&ieee->scan_mutex);
}
static void rtllib_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)
{
mutex_lock(&ieee->scan_mutex);
ieee->scan_watch_dog = 0;
if (ieee->scanning_continue == 1) {
ieee->scanning_continue = 0;
ieee->actscanning = false;
cancel_delayed_work_sync(&ieee->softmac_scan_wq);
}
mutex_unlock(&ieee->scan_mutex);
}
void rtllib_stop_scan(struct rtllib_device *ieee)
{
if (ieee->softmac_features & IEEE_SOFTMAC_SCAN) {
rtllib_softmac_stop_scan(ieee);
} 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;
schedule_delayed_work(&ieee->softmac_scan_wq, 0);
}
} else {
if (ieee->rtllib_start_hw_scan)
ieee->rtllib_start_hw_scan(ieee->dev);
}
}
/* called with wx_mutex 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);
static inline struct sk_buff *
rtllib_authentication_req(struct rtllib_network *beacon,
struct rtllib_device *ieee,
int challengelen, u8 *daddr)
{
struct sk_buff *skb;
struct rtllib_authentication *auth;
int len;
len = sizeof(struct rtllib_authentication) + challengelen +
ieee->tx_headroom + 4;
skb = dev_alloc_skb(len);
if (!skb)
return NULL;
skb_reserve(skb, ieee->tx_headroom);
auth = skb_put(skb, sizeof(struct rtllib_authentication));
auth->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_AUTH);
if (challengelen)
auth->header.frame_ctl |= cpu_to_le16(RTLLIB_FCTL_WEP);
auth->header.duration_id = cpu_to_le16(0x013a);
ether_addr_copy(auth->header.addr1, beacon->bssid);
ether_addr_copy(auth->header.addr2, ieee->dev->dev_addr);
ether_addr_copy(auth->header.addr3, beacon->bssid);
if (ieee->auth_mode == 0)
auth->algorithm = WLAN_AUTH_OPEN;
else if (ieee->auth_mode == 1)
auth->algorithm = cpu_to_le16(WLAN_AUTH_SHARED_KEY);
else if (ieee->auth_mode == 2)
auth->algorithm = WLAN_AUTH_OPEN;
auth->transaction = cpu_to_le16(ieee->associate_seq);
ieee->associate_seq++;
auth->status = cpu_to_le16(WLAN_STATUS_SUCCESS);
return skb;
}
static struct sk_buff *rtllib_probe_resp(struct rtllib_device *ieee,
const 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 &&
((strcmp(crypt->ops->name, "R-WEP") == 0 || 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 = skb_put(skb, (beacon_size - ieee->tx_headroom));
ether_addr_copy(beacon_buf->header.addr1, dest);
ether_addr_copy(beacon_buf->header.addr2, ieee->dev->dev_addr);
ether_addr_copy(beacon_buf->header.addr3, ieee->current_network.bssid);
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))
beacon_buf->capability |=
cpu_to_le16(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 = 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 = skb_put(skb, sizeof(struct rtllib_assoc_response_frame));
assoc->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_ASSOC_RESP);
ether_addr_copy(assoc->header.addr1, dest);
ether_addr_copy(assoc->header.addr3, ieee->dev->dev_addr);
ether_addr_copy(assoc->header.addr2, ieee->dev->dev_addr);
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 = 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 = 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);
ether_addr_copy(auth->header.addr3, ieee->dev->dev_addr);
ether_addr_copy(auth->header.addr2, ieee->dev->dev_addr);
ether_addr_copy(auth->header.addr1, dest);
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 = skb_put(skb, sizeof(struct rtllib_hdr_3addr));
ether_addr_copy(hdr->addr1, ieee->current_network.bssid);
ether_addr_copy(hdr->addr2, ieee->dev->dev_addr);
ether_addr_copy(hdr->addr3, ieee->current_network.bssid);
hdr->frame_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 = skb_put(skb, sizeof(struct rtllib_pspoll_hdr));
ether_addr_copy(hdr->bssid, ieee->current_network.bssid);
ether_addr_copy(hdr->ta, ieee->dev->dev_addr);
hdr->aid = cpu_to_le16(ieee->assoc_id | 0xc000);
hdr->frame_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);
}
static 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;
i++;
} while (i < NUM_PMKID_CACHE);
if (i == NUM_PMKID_CACHE)
i = -1;
return i;
}
static inline struct sk_buff *
rtllib_association_req(struct rtllib_network *beacon,
struct rtllib_device *ieee)
{
struct sk_buff *skb;
struct rtllib_assoc_request_frame *hdr;
u8 *tag, *ies;
int i;
u8 *ht_cap_buf = NULL;
u8 ht_cap_len = 0;
u8 *realtek_ie_buf = NULL;
u8 realtek_ie_len = 0;
int wpa_ie_len = ieee->wpa_ie_len;
int wps_ie_len = ieee->wps_ie_len;
unsigned int ckip_ie_len = 0;
unsigned int ccxrm_ie_len = 0;
unsigned int cxvernum_ie_len = 0;
struct lib80211_crypt_data *crypt;
int encrypt;
int 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 &&
((strcmp(crypt->ops->name, "R-WEP") == 0 ||
wpa_ie_len));
else
encrypt = 0;
if ((ieee->rtllib_ap_sec_type &&
(ieee->rtllib_ap_sec_type(ieee) & SEC_ALG_TKIP)) ||
ieee->bForcedBgMode) {
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;
netdev_info(ieee->dev, "[PMK cache]: WPA2 IE length: %x\n",
wpa_ie_len);
}
len = sizeof(struct rtllib_assoc_request_frame) + 2
+ beacon->ssid_len
+ rate_len
+ wpa_ie_len
+ wps_ie_len
+ wmm_info_len
+ turbo_info_len
+ ht_cap_len
+ realtek_ie_len
+ ckip_ie_len
+ ccxrm_ie_len
+ cxvernum_ie_len
+ ieee->tx_headroom;
skb = dev_alloc_skb(len);
if (!skb)
return NULL;
skb_reserve(skb, ieee->tx_headroom);
hdr = skb_put(skb, sizeof(struct rtllib_assoc_request_frame) + 2);
hdr->header.frame_ctl = cpu_to_le16(RTLLIB_STYPE_ASSOC_REQ);
hdr->header.duration_id = cpu_to_le16(37);
ether_addr_copy(hdr->header.addr1, beacon->bssid);
ether_addr_copy(hdr->header.addr2, ieee->dev->dev_addr);
ether_addr_copy(hdr->header.addr3, beacon->bssid);
ether_addr_copy(ieee->ap_mac_addr, beacon->bssid);
hdr->capability = cpu_to_le16(WLAN_CAPABILITY_ESS);
if (beacon->capability & WLAN_CAPABILITY_PRIVACY)
hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_PRIVACY);
if (beacon->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE);
if (ieee->short_slot &&
(beacon->capability&WLAN_CAPABILITY_SHORT_SLOT_TIME))
hdr->capability |= cpu_to_le16(WLAN_CAPABILITY_SHORT_SLOT_TIME);
hdr->listen_interval = cpu_to_le16(beacon->listen_interval);
hdr->info_element[0].id = MFIE_TYPE_SSID;
hdr->info_element[0].len = beacon->ssid_len;
skb_put_data(skb, beacon->ssid, beacon->ssid_len);
tag = skb_put(skb, rate_len);
if (beacon->rates_len) {
*tag++ = MFIE_TYPE_RATES;
*tag++ = beacon->rates_len;
for (i = 0; i < beacon->rates_len; i++)
*tag++ = beacon->rates[i];
}
if (beacon->rates_ex_len) {
*tag++ = MFIE_TYPE_RATES_EX;
*tag++ = beacon->rates_ex_len;
for (i = 0; i < beacon->rates_ex_len; i++)
*tag++ = beacon->rates_ex[i];
}
if (beacon->bCkipSupported) {
static const 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 const u8 CcxRmCapBuf[] = {0x00, 0x40, 0x96, 0x01, 0x01,
0x00};
struct octet_string osCcxRmCap;
osCcxRmCap.Octet = (u8 *) 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) {
skb_put_data(skb, 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) {
skb_put_data(skb, ieee->wps_ie, wps_ie_len);
}
if (turbo_info_len) {
tag = skb_put(skb, turbo_info_len);
rtllib_TURBO_Info(ieee, &tag);
}
if (ieee->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 = kmemdup(ies, ieee->assocreq_ies_len, GFP_ATOMIC);
if (!ieee->assocreq_ies)
ieee->assocreq_ies_len = 0;
return skb;
}
static void rtllib_associate_abort(struct rtllib_device *ieee)
{
unsigned long flags;
spin_lock_irqsave(&ieee->lock, flags);
ieee->associate_seq++;
/* don't scan, and avoid to have the RX path possibily
* try again to associate. Even do not react to AUTH or
* ASSOC response. Just wait for the retry wq to be scheduled.
* Here we will check if there are good nets to associate
* with, so we retry or just get back to NO_LINK and scanning
*/
if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING) {
netdev_dbg(ieee->dev, "Authentication failed\n");
ieee->softmac_stats.no_auth_rs++;
} else {
netdev_dbg(ieee->dev, "Association failed\n");
ieee->softmac_stats.no_ass_rs++;
}
ieee->state = RTLLIB_ASSOCIATING_RETRY;
schedule_delayed_work(&ieee->associate_retry_wq,
RTLLIB_SOFTMAC_ASSOC_RETRY_TIME);
spin_unlock_irqrestore(&ieee->lock, flags);
}
static void rtllib_associate_abort_cb(struct timer_list *t)
{
struct rtllib_device *dev = from_timer(dev, t, associate_timer);
rtllib_associate_abort(dev);
}
static void rtllib_associate_step1(struct rtllib_device *ieee, u8 *daddr)
{
struct rtllib_network *beacon = &ieee->current_network;
struct sk_buff *skb;
netdev_dbg(ieee->dev, "Stopping scan\n");
ieee->softmac_stats.tx_auth_rq++;
skb = rtllib_authentication_req(beacon, ieee, 0, daddr);
if (!skb)
rtllib_associate_abort(ieee);
else {
ieee->state = RTLLIB_ASSOCIATING_AUTHENTICATING;
netdev_dbg(ieee->dev, "Sending authentication request\n");
softmac_mgmt_xmit(skb, ieee);
if (!timer_pending(&ieee->associate_timer)) {
ieee->associate_timer.expires = jiffies + (HZ / 2);
add_timer(&ieee->associate_timer);
}
}
}
static void rtllib_auth_challenge(struct rtllib_device *ieee, u8 *challenge,
int chlen)
{
u8 *c;
struct sk_buff *skb;
struct rtllib_network *beacon = &ieee->current_network;
ieee->associate_seq++;
ieee->softmac_stats.tx_auth_rq++;
skb = rtllib_authentication_req(beacon, ieee, chlen + 2, beacon->bssid);
if (!skb)
rtllib_associate_abort(ieee);
else {
c = skb_put(skb, chlen+2);
*(c++) = MFIE_TYPE_CHALLENGE;
*(c++) = chlen;
memcpy(c, challenge, chlen);
netdev_dbg(ieee->dev,
"Sending authentication challenge response\n");
rtllib_encrypt_fragment(ieee, skb,
sizeof(struct 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);
netdev_dbg(ieee->dev, "Sending association request\n");
ieee->softmac_stats.tx_ass_rq++;
skb = rtllib_association_req(beacon, ieee);
if (!skb)
rtllib_associate_abort(ieee);
else {
softmac_mgmt_xmit(skb, ieee);
mod_timer(&ieee->associate_timer, jiffies + (HZ/2));
}
}
static void rtllib_associate_complete_wq(void *data)
{
struct rtllib_device *ieee = (struct rtllib_device *)
container_of_work_rsl(data,
struct rtllib_device,
associate_complete_wq);
struct rt_pwr_save_ctrl *pPSC = &(ieee->PowerSaveControl);
netdev_info(ieee->dev, "Associated successfully with %pM\n",
ieee->current_network.bssid);
if (!ieee->is_silent_reset) {
netdev_info(ieee->dev, "normal associate\n");
notify_wx_assoc_event(ieee);
}
netif_carrier_on(ieee->dev);
ieee->is_roaming = false;
if (rtllib_is_54g(&ieee->current_network) &&
(ieee->modulation & RTLLIB_OFDM_MODULATION)) {
ieee->rate = 108;
netdev_info(ieee->dev, "Using G rates:%d\n", ieee->rate);
} else {
ieee->rate = 22;
ieee->SetWirelessMode(ieee->dev, IEEE_B);
netdev_info(ieee->dev, "Using B rates:%d\n", ieee->rate);
}
if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT) {
netdev_info(ieee->dev, "Successfully associated, ht enabled\n");
HTOnAssocRsp(ieee);
} else {
netdev_info(ieee->dev,
"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) {
netdev_info(ieee->dev, "silent reset associate\n");
ieee->is_silent_reset = false;
}
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);
schedule_work(&ieee->associate_complete_wq);
}
static void rtllib_associate_procedure_wq(void *data)
{
struct rtllib_device *ieee = container_of_dwork_rsl(data,
struct rtllib_device,
associate_procedure_wq);
rtllib_stop_scan_syncro(ieee);
if (ieee->rtllib_ips_leave != NULL)
ieee->rtllib_ips_leave(ieee->dev);
mutex_lock(&ieee->wx_mutex);
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);
mutex_unlock(&ieee->wx_mutex);
return;
}
ieee->associate_seq = 1;
rtllib_associate_step1(ieee, ieee->current_network.bssid);
mutex_unlock(&ieee->wx_mutex);
}
inline void rtllib_softmac_new_net(struct rtllib_device *ieee,
struct rtllib_network *net)
{
u8 tmp_ssid[IW_ESSID_MAX_SIZE + 1];
int tmp_ssid_len = 0;
short apset, ssidset, ssidbroad, apmatch, ssidmatch;
/* we are interested in new 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 supplied ANY essid
* if the network does broadcast and the user does not set
* essid it is OK
* if the network does broadcast and the user did set essid
* check if essid match
* if the ap is not set, check that the user set the bssid
* and the network does broadcast and that those two bssid match
*/
if ((apset && apmatch &&
((ssidset && ssidbroad && ssidmatch) ||
(ssidbroad && !ssidset) || (!ssidbroad && ssidset))) ||
(!apset && ssidset && ssidbroad && ssidmatch) ||
(ieee->is_roaming && ssidset && ssidbroad && ssidmatch)) {
/* Save the essid so that if it is hidden, it is
* replaced with the essid provided by the user.
*/
if (!ssidbroad) {
memcpy(tmp_ssid, ieee->current_network.ssid,
ieee->current_network.ssid_len);
tmp_ssid_len = ieee->current_network.ssid_len;
}
memcpy(&ieee->current_network, net,
sizeof(ieee->current_network));
if (!ssidbroad) {
memcpy(ieee->current_network.ssid, tmp_ssid,
tmp_ssid_len);
ieee->current_network.ssid_len = tmp_ssid_len;
}
netdev_info(ieee->dev,
"Linking with %s,channel:%d, qos:%d, myHT:%d, networkHT:%d, mode:%x cur_net.flags:0x%x\n",
ieee->current_network.ssid,
ieee->current_network.channel,
ieee->current_network.qos_data.supported,
ieee->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);
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);
schedule_delayed_work(
&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);
netdev_info(ieee->dev,
"Using G rates\n");
} else {
ieee->rate = 22;
ieee->SetWirelessMode(ieee->dev,
IEEE_B);
netdev_info(ieee->dev,
"Using B rates\n");
}
memset(ieee->dot11HTOperationalRateSet, 0, 16);
ieee->state = RTLLIB_LINKED;
}
}
}
}
static void rtllib_softmac_check_all_nets(struct rtllib_device *ieee)
{
unsigned long flags;
struct rtllib_network *target;
spin_lock_irqsave(&ieee->lock, flags);
list_for_each_entry(target, &ieee->network_list, list) {
/* if the state become different that NOLINK means
* we had found what we are searching for
*/
if (ieee->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 net_device *dev, struct sk_buff *skb,
u8 **challenge, int *chlen)
{
struct rtllib_authentication *a;
u8 *t;
if (skb->len < (sizeof(struct rtllib_authentication) -
sizeof(struct rtllib_info_element))) {
netdev_dbg(dev, "invalid len in auth resp: %d\n", skb->len);
return 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 = kmemdup(t, *chlen, GFP_ATOMIC);
if (!*challenge)
return -ENOMEM;
}
}
return le16_to_cpu(a->status);
}
static int auth_rq_parse(struct net_device *dev, struct sk_buff *skb, u8 *dest)
{
struct rtllib_authentication *a;
if (skb->len < (sizeof(struct rtllib_authentication) -
sizeof(struct rtllib_info_element))) {
netdev_dbg(dev, "invalid len in auth request: %d\n", skb->len);
return -1;
}
a = (struct rtllib_authentication *) skb->data;
ether_addr_copy(dest, a->header.addr2);
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 =
(!ether_addr_equal(header->addr3, ieee->current_network.bssid)) &&
(!is_broadcast_ether_addr(header->addr3));
if (bssid_match)
return -1;
ether_addr_copy(src, header->addr2);
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 net_device *dev, 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))) {
netdev_dbg(dev, "invalid len in auth request:%d\n", skb->len);
return -1;
}
a = (struct rtllib_assoc_request_frame *) skb->data;
ether_addr_copy(dest, a->header.addr2);
return 0;
}
static inline u16 assoc_parse(struct rtllib_device *ieee, struct sk_buff *skb,
int *aid)
{
struct rtllib_assoc_response_frame *response_head;
u16 status_code;
if (skb->len < sizeof(struct rtllib_assoc_response_frame)) {
netdev_dbg(ieee->dev, "Invalid len in auth resp: %d\n",
skb->len);
return 0xcafe;
}
response_head = (struct rtllib_assoc_response_frame *) skb->data;
*aid = le16_to_cpu(response_head->aid) & 0x3fff;
status_code = le16_to_cpu(response_head->status);
if ((status_code == WLAN_STATUS_ASSOC_DENIED_RATES ||
status_code == WLAN_STATUS_CAPS_UNSUPPORTED) &&
((ieee->mode == 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(ieee->dev, 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(ieee->dev, skb, dest) != -1)
rtllib_resp_to_assoc_rq(ieee, dest);
netdev_info(ieee->dev, "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;
u8 dtim;
struct rt_pwr_save_ctrl *pPSC = &(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,
dev_trans_start(ieee->dev) + msecs_to_jiffies(timeout)))
return 0;
if (!time_after(jiffies,
ieee->last_rx_ps_time + msecs_to_jiffies(timeout)))
return 0;
if ((ieee->softmac_features & IEEE_SOFTMAC_SINGLE_QUEUE) &&
(ieee->mgmt_queue_tail != ieee->mgmt_queue_head))
return 0;
if (time) {
if (ieee->bAwakePktSent) {
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_to_jiffies(ieee->current_network.beacon_interval *
LPSAwakeIntvl_tmp);
}
}
return 1;
}
static inline void rtllib_sta_ps(unsigned long data)
{
struct rtllib_device *ieee = (struct rtllib_device *)data;
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);
}
static 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) {
netdev_warn(ieee->dev,
"Error getting 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;
}
}
static inline int
rtllib_rx_assoc_resp(struct rtllib_device *ieee, struct sk_buff *skb,
struct rtllib_rx_stats *rx_stats)
{
u16 errcode;
int aid;
u8 *ies;
struct rtllib_assoc_response_frame *assoc_resp;
struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
u16 frame_ctl = le16_to_cpu(header->frame_ctl);
netdev_dbg(ieee->dev, "received [RE]ASSOCIATION RESPONSE (%d)\n",
WLAN_FC_GET_STYPE(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 (!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;
}
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 = kmemdup(ies,
ieee->assocresp_ies_len,
GFP_ATOMIC);
if (!ieee->assocresp_ies)
ieee->assocresp_ies_len = 0;
rtllib_associate_complete(ieee);
} else {
/* aid could not been allocated */
ieee->softmac_stats.rx_ass_err++;
netdev_info(ieee->dev,
"Association response status code 0x%x\n",
errcode);
if (ieee->AsocRetryCount < RT_ASOC_RETRY_LIMIT)
schedule_delayed_work(
&ieee->associate_procedure_wq, 0);
else
rtllib_associate_abort(ieee);
}
}
return 0;
}
static void rtllib_rx_auth_resp(struct rtllib_device *ieee, struct sk_buff *skb)
{
u16 errcode;
u8 *challenge;
int chlen = 0;
bool bSupportNmode = true, bHalfSupportNmode = false;
errcode = auth_parse(ieee->dev, skb, &challenge, &chlen);
if (errcode) {
ieee->softmac_stats.rx_auth_rs_err++;
netdev_info(ieee->dev,
"Authentication response status code 0x%x",
errcode);
rtllib_associate_abort(ieee);
return;
}
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) {
netdev_info(ieee->dev, "======>enter half N mode\n");
ieee->bHalfWirelessN24GMode = true;
} else {
ieee->bHalfWirelessN24GMode = false;
}
rtllib_associate_step2(ieee);
} else {
rtllib_auth_challenge(ieee, challenge, chlen);
}
}
static inline int
rtllib_rx_auth(struct rtllib_device *ieee, struct sk_buff *skb,
struct rtllib_rx_stats *rx_stats)
{
if (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) {
if (ieee->state == RTLLIB_ASSOCIATING_AUTHENTICATING &&
(ieee->iw_mode == IW_MODE_INFRA)) {
netdev_dbg(ieee->dev,
"Received authentication response");
rtllib_rx_auth_resp(ieee, skb);
} else if (ieee->iw_mode == IW_MODE_MASTER) {
rtllib_rx_auth_rq(ieee, skb);
}
}
return 0;
}
static inline int
rtllib_rx_deauth(struct rtllib_device *ieee, struct sk_buff *skb)
{
struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
u16 frame_ctl;
if (memcmp(header->addr3, ieee->current_network.bssid, ETH_ALEN) != 0)
return 0;
/* FIXME for now repeat all the association procedure
* both for disassociation and deauthentication
*/
if ((ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE) &&
ieee->state == RTLLIB_LINKED &&
(ieee->iw_mode == IW_MODE_INFRA)) {
frame_ctl = le16_to_cpu(header->frame_ctl);
netdev_info(ieee->dev,
"==========>received disassoc/deauth(%x) frame, reason code:%x\n",
WLAN_FC_GET_STYPE(frame_ctl),
((struct rtllib_disassoc *)skb->data)->reason);
ieee->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)))
schedule_delayed_work(
&ieee->associate_procedure_wq, 5);
}
return 0;
}
inline int rtllib_rx_frame_softmac(struct rtllib_device *ieee,
struct sk_buff *skb,
struct rtllib_rx_stats *rx_stats, u16 type,
u16 stype)
{
struct rtllib_hdr_3addr *header = (struct rtllib_hdr_3addr *) skb->data;
u16 frame_ctl;
if (!ieee->proto_started)
return 0;
frame_ctl = le16_to_cpu(header->frame_ctl);
switch (WLAN_FC_GET_STYPE(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;
}
return 0;
}
/* following are for a simpler TX queue management.
* Instead of using netif_[stop/wake]_queue the driver
* will use these two functions (plus a reset one), that
* will internally use the kernel netif_* and takes
* care of the ieee802.11 fragmentation.
* So the driver receives a fragment per time and might
* call the stop function when it wants to not
* have enough room to TX an entire packet.
* This might be useful if each fragment needs it's own
* descriptor, thus just keep a total free memory > than
* the max fragmentation threshold is not enough.. If the
* ieee802.11 stack passed a TXB struct then you need
* to keep N free descriptors where
* N = MAX_PACKET_SIZE / MIN_FRAG_TRESHOLD
* In this way you need just one and the 802.11 stack
* will take care of buffering fragments and pass them to
* 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);
}
void rtllib_reset_queue(struct rtllib_device *ieee)
{
unsigned long flags;
spin_lock_irqsave(&ieee->lock, flags);
init_mgmt_queue(ieee);
if (ieee->tx_pending.txb) {
rtllib_txb_free(ieee->tx_pending.txb);
ieee->tx_pending.txb = NULL;
}
ieee->queue_stop = 0;
spin_unlock_irqrestore(&ieee->lock, flags);
}
EXPORT_SYMBOL(rtllib_reset_queue);
void rtllib_stop_all_queues(struct rtllib_device *ieee)
{
unsigned int i;
for (i = 0; i < ieee->dev->num_tx_queues; i++)
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);
}
/* called in user context only */
static 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;
}
ether_addr_copy(ieee->current_network.bssid, ieee->dev->dev_addr);
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_mutex hold.
* Anyway some most set operations set a flag to speed-up
* (abort) this wq (when syncro scanning) before sleeping
* on the mutex
*/
if (!ieee->proto_started) {
netdev_info(ieee->dev, "==========oh driver down return\n");
return;
}
mutex_lock(&ieee->wx_mutex);
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 switched 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 tried to associate when
* we had just checked the ieee->state and we was going to start the
* scan) because 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) {
netdev_info(ieee->dev, "creating new IBSS cell\n");
ieee->current_network.channel = ieee->bss_start_channel;
if (!ieee->wap_set)
eth_random_addr(ieee->current_network.bssid);
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;
}
netdev_info(ieee->dev, "%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<