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rtw_mlme.c
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/******************************************************************************
*
* Copyright(c) 2007 - 2017 Realtek Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
*****************************************************************************/
#define _RTW_MLME_C_
#include <hal_data.h>
extern void indicate_wx_scan_complete_event(_adapter *padapter);
extern u8 rtw_do_join(_adapter *padapter);
void rtw_init_mlme_timer(_adapter *padapter)
{
struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
rtw_init_timer(&(pmlmepriv->assoc_timer), padapter, rtw_join_timeout_handler, padapter);
rtw_init_timer(&(pmlmepriv->scan_to_timer), padapter, rtw_scan_timeout_handler, padapter);
#ifdef CONFIG_SET_SCAN_DENY_TIMER
rtw_init_timer(&(pmlmepriv->set_scan_deny_timer), padapter, rtw_set_scan_deny_timer_hdl, padapter);
#endif
#ifdef RTK_DMP_PLATFORM
_init_workitem(&(pmlmepriv->Linkup_workitem), Linkup_workitem_callback, padapter);
_init_workitem(&(pmlmepriv->Linkdown_workitem), Linkdown_workitem_callback, padapter);
#endif
}
sint _rtw_init_mlme_priv(_adapter *padapter)
{
sint i;
u8 *pbuf;
struct wlan_network *pnetwork;
struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
struct rf_ctl_t *rfctl = adapter_to_rfctl(padapter);
sint res = _SUCCESS;
/* We don't need to memset padapter->XXX to zero, because adapter is allocated by rtw_zvmalloc(). */
/* _rtw_memset((u8 *)pmlmepriv, 0, sizeof(struct mlme_priv)); */
/*qos_priv*/
/*pmlmepriv->qospriv.qos_option = pregistrypriv->wmm_enable;*/
/*ht_priv*/
#ifdef CONFIG_80211N_HT
pmlmepriv->htpriv.ampdu_enable = _FALSE;/*set to disabled*/
#endif
pmlmepriv->nic_hdl = (u8 *)padapter;
pmlmepriv->pscanned = NULL;
init_fwstate(pmlmepriv, WIFI_STATION_STATE);
pmlmepriv->cur_network.network.InfrastructureMode = Ndis802_11AutoUnknown;
pmlmepriv->scan_mode = SCAN_ACTIVE; /* 1: active, 0: pasive. Maybe someday we should rename this varable to "active_mode" (Jeff) */
_rtw_spinlock_init(&(pmlmepriv->lock));
_rtw_init_queue(&(pmlmepriv->free_bss_pool));
_rtw_init_queue(&(pmlmepriv->scanned_queue));
set_scanned_network_val(pmlmepriv, 0);
_rtw_memset(&pmlmepriv->assoc_ssid, 0, sizeof(NDIS_802_11_SSID));
if (padapter->registrypriv.max_bss_cnt != 0)
pmlmepriv->max_bss_cnt = padapter->registrypriv.max_bss_cnt;
else if (rfctl->max_chan_nums <= MAX_CHANNEL_NUM_2G)
pmlmepriv->max_bss_cnt = MAX_BSS_CNT;
else
pmlmepriv->max_bss_cnt = MAX_BSS_CNT + MAX_BSS_CNT;
pbuf = rtw_zvmalloc(pmlmepriv->max_bss_cnt * (sizeof(struct wlan_network)));
if (pbuf == NULL) {
res = _FAIL;
goto exit;
}
pmlmepriv->free_bss_buf = pbuf;
pnetwork = (struct wlan_network *)pbuf;
for (i = 0; i < pmlmepriv->max_bss_cnt; i++) {
_rtw_init_listhead(&(pnetwork->list));
rtw_list_insert_tail(&(pnetwork->list), &(pmlmepriv->free_bss_pool.queue));
pnetwork++;
}
/* allocate DMA-able/Non-Page memory for cmd_buf and rsp_buf */
rtw_clear_scan_deny(padapter);
#ifdef CONFIG_ARP_KEEP_ALIVE
pmlmepriv->bGetGateway = 0;
pmlmepriv->GetGatewayTryCnt = 0;
#endif
#ifdef CONFIG_LAYER2_ROAMING
#define RTW_ROAM_SCAN_RESULT_EXP_MS (5*1000)
#define RTW_ROAM_RSSI_DIFF_TH 10
#define RTW_ROAM_SCAN_INTERVAL_MS (10*1000)
#define RTW_ROAM_RSSI_THRESHOLD 70
pmlmepriv->roam_flags = 0
| RTW_ROAM_ON_EXPIRED
#ifdef CONFIG_LAYER2_ROAMING_RESUME
| RTW_ROAM_ON_RESUME
#endif
#ifdef CONFIG_LAYER2_ROAMING_ACTIVE
| RTW_ROAM_ACTIVE
#endif
;
pmlmepriv->roam_scanr_exp_ms = RTW_ROAM_SCAN_RESULT_EXP_MS;
pmlmepriv->roam_rssi_diff_th = RTW_ROAM_RSSI_DIFF_TH;
pmlmepriv->roam_scan_int_ms = RTW_ROAM_SCAN_INTERVAL_MS;
pmlmepriv->roam_rssi_threshold = RTW_ROAM_RSSI_THRESHOLD;
pmlmepriv->need_to_roam = _FALSE;
#endif /* CONFIG_LAYER2_ROAMING */
#ifdef CONFIG_RTW_80211R
rtw_ft_info_init(&pmlmepriv->ft_roam);
#endif
#ifdef CONFIG_LAYER2_ROAMING
#if defined(CONFIG_RTW_WNM) || defined(CONFIG_RTW_80211K)
rtw_roam_nb_info_init(padapter);
pmlmepriv->ch_cnt = 0;
#endif
#endif
rtw_init_mlme_timer(padapter);
exit:
return res;
}
void rtw_mfree_mlme_priv_lock(struct mlme_priv *pmlmepriv);
void rtw_mfree_mlme_priv_lock(struct mlme_priv *pmlmepriv)
{
_rtw_spinlock_free(&pmlmepriv->lock);
_rtw_spinlock_free(&(pmlmepriv->free_bss_pool.lock));
_rtw_spinlock_free(&(pmlmepriv->scanned_queue.lock));
}
static void rtw_free_mlme_ie_data(u8 **ppie, u32 *plen)
{
if (*ppie) {
rtw_mfree(*ppie, *plen);
*plen = 0;
*ppie = NULL;
}
}
void rtw_free_mlme_priv_ie_data(struct mlme_priv *pmlmepriv)
{
#if defined(CONFIG_AP_MODE) && defined (CONFIG_NATIVEAP_MLME)
rtw_buf_free(&pmlmepriv->assoc_req, &pmlmepriv->assoc_req_len);
rtw_buf_free(&pmlmepriv->assoc_rsp, &pmlmepriv->assoc_rsp_len);
rtw_free_mlme_ie_data(&pmlmepriv->wps_beacon_ie, &pmlmepriv->wps_beacon_ie_len);
rtw_free_mlme_ie_data(&pmlmepriv->wps_probe_req_ie, &pmlmepriv->wps_probe_req_ie_len);
rtw_free_mlme_ie_data(&pmlmepriv->wps_probe_resp_ie, &pmlmepriv->wps_probe_resp_ie_len);
rtw_free_mlme_ie_data(&pmlmepriv->wps_assoc_resp_ie, &pmlmepriv->wps_assoc_resp_ie_len);
rtw_free_mlme_ie_data(&pmlmepriv->p2p_beacon_ie, &pmlmepriv->p2p_beacon_ie_len);
rtw_free_mlme_ie_data(&pmlmepriv->p2p_probe_req_ie, &pmlmepriv->p2p_probe_req_ie_len);
rtw_free_mlme_ie_data(&pmlmepriv->p2p_probe_resp_ie, &pmlmepriv->p2p_probe_resp_ie_len);
rtw_free_mlme_ie_data(&pmlmepriv->p2p_go_probe_resp_ie, &pmlmepriv->p2p_go_probe_resp_ie_len);
rtw_free_mlme_ie_data(&pmlmepriv->p2p_assoc_req_ie, &pmlmepriv->p2p_assoc_req_ie_len);
rtw_free_mlme_ie_data(&pmlmepriv->p2p_assoc_resp_ie, &pmlmepriv->p2p_assoc_resp_ie_len);
#endif
#if defined(CONFIG_WFD) && defined(CONFIG_IOCTL_CFG80211)
rtw_free_mlme_ie_data(&pmlmepriv->wfd_beacon_ie, &pmlmepriv->wfd_beacon_ie_len);
rtw_free_mlme_ie_data(&pmlmepriv->wfd_probe_req_ie, &pmlmepriv->wfd_probe_req_ie_len);
rtw_free_mlme_ie_data(&pmlmepriv->wfd_probe_resp_ie, &pmlmepriv->wfd_probe_resp_ie_len);
rtw_free_mlme_ie_data(&pmlmepriv->wfd_go_probe_resp_ie, &pmlmepriv->wfd_go_probe_resp_ie_len);
rtw_free_mlme_ie_data(&pmlmepriv->wfd_assoc_req_ie, &pmlmepriv->wfd_assoc_req_ie_len);
rtw_free_mlme_ie_data(&pmlmepriv->wfd_assoc_resp_ie, &pmlmepriv->wfd_assoc_resp_ie_len);
#endif
#ifdef CONFIG_RTW_80211R
rtw_free_mlme_ie_data(&pmlmepriv->auth_rsp, &pmlmepriv->auth_rsp_len);
#endif
}
#if defined(CONFIG_WFD) && defined(CONFIG_IOCTL_CFG80211)
int rtw_mlme_update_wfd_ie_data(struct mlme_priv *mlme, u8 type, u8 *ie, u32 ie_len)
{
_adapter *adapter = mlme_to_adapter(mlme);
struct wifi_display_info *wfd_info = &adapter->wfd_info;
u8 clear = 0;
u8 **t_ie = NULL;
u32 *t_ie_len = NULL;
int ret = _FAIL;
if (!hal_chk_wl_func(adapter, WL_FUNC_MIRACAST))
goto success;
if (wfd_info->wfd_enable == _TRUE)
goto success; /* WFD IE is build by self */
if (!ie && !ie_len)
clear = 1;
else if (!ie || !ie_len) {
RTW_PRINT(FUNC_ADPT_FMT" type:%u, ie:%p, ie_len:%u"
, FUNC_ADPT_ARG(adapter), type, ie, ie_len);
rtw_warn_on(1);
goto exit;
}
switch (type) {
case MLME_BEACON_IE:
t_ie = &mlme->wfd_beacon_ie;
t_ie_len = &mlme->wfd_beacon_ie_len;
break;
case MLME_PROBE_REQ_IE:
t_ie = &mlme->wfd_probe_req_ie;
t_ie_len = &mlme->wfd_probe_req_ie_len;
break;
case MLME_PROBE_RESP_IE:
t_ie = &mlme->wfd_probe_resp_ie;
t_ie_len = &mlme->wfd_probe_resp_ie_len;
break;
case MLME_GO_PROBE_RESP_IE:
t_ie = &mlme->wfd_go_probe_resp_ie;
t_ie_len = &mlme->wfd_go_probe_resp_ie_len;
break;
case MLME_ASSOC_REQ_IE:
t_ie = &mlme->wfd_assoc_req_ie;
t_ie_len = &mlme->wfd_assoc_req_ie_len;
break;
case MLME_ASSOC_RESP_IE:
t_ie = &mlme->wfd_assoc_resp_ie;
t_ie_len = &mlme->wfd_assoc_resp_ie_len;
break;
default:
RTW_PRINT(FUNC_ADPT_FMT" unsupported type:%u"
, FUNC_ADPT_ARG(adapter), type);
rtw_warn_on(1);
goto exit;
}
if (*t_ie) {
u32 free_len = *t_ie_len;
*t_ie_len = 0;
rtw_mfree(*t_ie, free_len);
*t_ie = NULL;
}
if (!clear) {
*t_ie = rtw_malloc(ie_len);
if (*t_ie == NULL) {
RTW_ERR(FUNC_ADPT_FMT" type:%u, rtw_malloc() fail\n"
, FUNC_ADPT_ARG(adapter), type);
goto exit;
}
_rtw_memcpy(*t_ie, ie, ie_len);
*t_ie_len = ie_len;
}
if (*t_ie && *t_ie_len) {
u8 *attr_content;
u32 attr_contentlen = 0;
attr_content = rtw_get_wfd_attr_content(*t_ie, *t_ie_len, WFD_ATTR_DEVICE_INFO, NULL, &attr_contentlen);
if (attr_content && attr_contentlen) {
if (RTW_GET_BE16(attr_content + 2) != wfd_info->rtsp_ctrlport) {
wfd_info->rtsp_ctrlport = RTW_GET_BE16(attr_content + 2);
RTW_INFO(FUNC_ADPT_FMT" type:%u, RTSP CTRL port = %u\n"
, FUNC_ADPT_ARG(adapter), type, wfd_info->rtsp_ctrlport);
}
}
}
success:
ret = _SUCCESS;
exit:
return ret;
}
#endif /* defined(CONFIG_WFD) && defined(CONFIG_IOCTL_CFG80211) */
void _rtw_free_mlme_priv(struct mlme_priv *pmlmepriv)
{
_adapter *adapter = mlme_to_adapter(pmlmepriv);
if (NULL == pmlmepriv) {
rtw_warn_on(1);
goto exit;
}
rtw_free_mlme_priv_ie_data(pmlmepriv);
if (pmlmepriv) {
rtw_mfree_mlme_priv_lock(pmlmepriv);
if (pmlmepriv->free_bss_buf)
rtw_vmfree(pmlmepriv->free_bss_buf, pmlmepriv->max_bss_cnt * sizeof(struct wlan_network));
}
exit:
return;
}
sint _rtw_enqueue_network(_queue *queue, struct wlan_network *pnetwork)
{
_irqL irqL;
if (pnetwork == NULL)
goto exit;
_enter_critical_bh(&queue->lock, &irqL);
rtw_list_insert_tail(&pnetwork->list, &queue->queue);
_exit_critical_bh(&queue->lock, &irqL);
exit:
return _SUCCESS;
}
/*
struct wlan_network *_rtw_dequeue_network(_queue *queue)
{
_irqL irqL;
struct wlan_network *pnetwork;
_enter_critical_bh(&queue->lock, &irqL);
if (_rtw_queue_empty(queue) == _TRUE)
pnetwork = NULL;
else
{
pnetwork = LIST_CONTAINOR(get_next(&queue->queue), struct wlan_network, list);
rtw_list_delete(&(pnetwork->list));
}
_exit_critical_bh(&queue->lock, &irqL);
return pnetwork;
}
*/
struct wlan_network *_rtw_alloc_network(struct mlme_priv *pmlmepriv) /* (_queue *free_queue) */
{
_irqL irqL;
struct wlan_network *pnetwork;
_queue *free_queue = &pmlmepriv->free_bss_pool;
_list *plist = NULL;
_enter_critical_bh(&free_queue->lock, &irqL);
if (_rtw_queue_empty(free_queue) == _TRUE) {
pnetwork = NULL;
goto exit;
}
plist = get_next(&(free_queue->queue));
pnetwork = LIST_CONTAINOR(plist , struct wlan_network, list);
rtw_list_delete(&pnetwork->list);
pnetwork->network_type = 0;
pnetwork->fixed = _FALSE;
pnetwork->last_scanned = rtw_get_current_time();
pnetwork->aid = 0;
pnetwork->join_res = 0;
pmlmepriv->num_of_scanned++;
exit:
_exit_critical_bh(&free_queue->lock, &irqL);
return pnetwork;
}
void _rtw_free_network(struct mlme_priv *pmlmepriv , struct wlan_network *pnetwork, u8 isfreeall)
{
u32 delta_time;
u32 lifetime = SCANQUEUE_LIFETIME;
_irqL irqL;
_queue *free_queue = &(pmlmepriv->free_bss_pool);
if (pnetwork == NULL)
goto exit;
if (pnetwork->fixed == _TRUE)
goto exit;
if ((check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE) == _TRUE) ||
(check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) == _TRUE))
lifetime = 1;
if (!isfreeall) {
delta_time = (u32) rtw_get_passing_time_ms(pnetwork->last_scanned);
if (delta_time < lifetime) /* unit:msec */
goto exit;
}
_enter_critical_bh(&free_queue->lock, &irqL);
rtw_list_delete(&(pnetwork->list));
rtw_list_insert_tail(&(pnetwork->list), &(free_queue->queue));
pmlmepriv->num_of_scanned--;
/* RTW_INFO("_rtw_free_network:SSID=%s\n", pnetwork->network.Ssid.Ssid); */
_exit_critical_bh(&free_queue->lock, &irqL);
exit:
return;
}
void _rtw_free_network_nolock(struct mlme_priv *pmlmepriv, struct wlan_network *pnetwork)
{
_queue *free_queue = &(pmlmepriv->free_bss_pool);
if (pnetwork == NULL)
goto exit;
if (pnetwork->fixed == _TRUE)
goto exit;
/* _enter_critical(&free_queue->lock, &irqL); */
rtw_list_delete(&(pnetwork->list));
rtw_list_insert_tail(&(pnetwork->list), get_list_head(free_queue));
pmlmepriv->num_of_scanned--;
/* _exit_critical(&free_queue->lock, &irqL); */
exit:
return;
}
void _rtw_free_network_queue(_adapter *padapter, u8 isfreeall)
{
_irqL irqL;
_list *phead, *plist;
struct wlan_network *pnetwork;
struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
_queue *scanned_queue = &pmlmepriv->scanned_queue;
_enter_critical_bh(&scanned_queue->lock, &irqL);
phead = get_list_head(scanned_queue);
plist = get_next(phead);
while (rtw_end_of_queue_search(phead, plist) == _FALSE) {
pnetwork = LIST_CONTAINOR(plist, struct wlan_network, list);
plist = get_next(plist);
_rtw_free_network(pmlmepriv, pnetwork, isfreeall);
}
_exit_critical_bh(&scanned_queue->lock, &irqL);
}
sint rtw_if_up(_adapter *padapter)
{
sint res;
if (RTW_CANNOT_RUN(padapter) ||
(check_fwstate(&padapter->mlmepriv, _FW_LINKED) == _FALSE)) {
res = _FALSE;
} else
res = _TRUE;
return res;
}
void rtw_generate_random_ibss(u8 *pibss)
{
*((u32 *)(&pibss[2])) = rtw_random32();
pibss[0] = 0x02; /* in ad-hoc mode local bit must set to 1 */
pibss[1] = 0x11;
pibss[2] = 0x87;
}
u8 *rtw_get_capability_from_ie(u8 *ie)
{
return ie + 8 + 2;
}
u16 rtw_get_capability(WLAN_BSSID_EX *bss)
{
u16 val;
_rtw_memcpy((u8 *)&val, rtw_get_capability_from_ie(bss->IEs), 2);
return le16_to_cpu(val);
}
u8 *rtw_get_timestampe_from_ie(u8 *ie)
{
return ie + 0;
}
u8 *rtw_get_beacon_interval_from_ie(u8 *ie)
{
return ie + 8;
}
int rtw_init_mlme_priv(_adapter *padapter) /* (struct mlme_priv *pmlmepriv) */
{
int res;
res = _rtw_init_mlme_priv(padapter);/* (pmlmepriv); */
return res;
}
void rtw_free_mlme_priv(struct mlme_priv *pmlmepriv)
{
_rtw_free_mlme_priv(pmlmepriv);
}
int rtw_enqueue_network(_queue *queue, struct wlan_network *pnetwork);
int rtw_enqueue_network(_queue *queue, struct wlan_network *pnetwork)
{
int res;
res = _rtw_enqueue_network(queue, pnetwork);
return res;
}
/*
static struct wlan_network *rtw_dequeue_network(_queue *queue)
{
struct wlan_network *pnetwork;
pnetwork = _rtw_dequeue_network(queue);
return pnetwork;
}
*/
struct wlan_network *rtw_alloc_network(struct mlme_priv *pmlmepriv);
struct wlan_network *rtw_alloc_network(struct mlme_priv *pmlmepriv) /* (_queue *free_queue) */
{
struct wlan_network *pnetwork;
pnetwork = _rtw_alloc_network(pmlmepriv);
return pnetwork;
}
void rtw_free_network(struct mlme_priv *pmlmepriv, struct wlan_network *pnetwork, u8 is_freeall);
void rtw_free_network(struct mlme_priv *pmlmepriv, struct wlan_network *pnetwork, u8 is_freeall)/* (struct wlan_network *pnetwork, _queue *free_queue) */
{
_rtw_free_network(pmlmepriv, pnetwork, is_freeall);
}
void rtw_free_network_nolock(_adapter *padapter, struct wlan_network *pnetwork);
void rtw_free_network_nolock(_adapter *padapter, struct wlan_network *pnetwork)
{
_rtw_free_network_nolock(&(padapter->mlmepriv), pnetwork);
#ifdef CONFIG_IOCTL_CFG80211
rtw_cfg80211_unlink_bss(padapter, pnetwork);
#endif /* CONFIG_IOCTL_CFG80211 */
}
void rtw_free_network_queue(_adapter *dev, u8 isfreeall)
{
_rtw_free_network_queue(dev, isfreeall);
}
struct wlan_network *_rtw_find_network(_queue *scanned_queue, const u8 *addr)
{
_list *phead, *plist;
struct wlan_network *pnetwork = NULL;
u8 zero_addr[ETH_ALEN] = {0, 0, 0, 0, 0, 0};
if (_rtw_memcmp(zero_addr, addr, ETH_ALEN)) {
pnetwork = NULL;
goto exit;
}
phead = get_list_head(scanned_queue);
plist = get_next(phead);
while (plist != phead) {
pnetwork = LIST_CONTAINOR(plist, struct wlan_network , list);
if (_rtw_memcmp(addr, pnetwork->network.MacAddress, ETH_ALEN) == _TRUE)
break;
plist = get_next(plist);
}
if (plist == phead)
pnetwork = NULL;
exit:
return pnetwork;
}
struct wlan_network *rtw_find_network(_queue *scanned_queue, const u8 *addr)
{
struct wlan_network *pnetwork;
_irqL irqL;
_enter_critical_bh(&scanned_queue->lock, &irqL);
pnetwork = _rtw_find_network(scanned_queue, addr);
_exit_critical_bh(&scanned_queue->lock, &irqL);
return pnetwork;
}
int rtw_is_same_ibss(_adapter *adapter, struct wlan_network *pnetwork)
{
int ret = _TRUE;
struct security_priv *psecuritypriv = &adapter->securitypriv;
if ((psecuritypriv->dot11PrivacyAlgrthm != _NO_PRIVACY_) &&
(pnetwork->network.Privacy == 0))
ret = _FALSE;
else if ((psecuritypriv->dot11PrivacyAlgrthm == _NO_PRIVACY_) &&
(pnetwork->network.Privacy == 1))
ret = _FALSE;
else
ret = _TRUE;
return ret;
}
inline int is_same_ess(WLAN_BSSID_EX *a, WLAN_BSSID_EX *b)
{
return (a->Ssid.SsidLength == b->Ssid.SsidLength)
&& _rtw_memcmp(a->Ssid.Ssid, b->Ssid.Ssid, a->Ssid.SsidLength) == _TRUE;
}
int is_same_network(WLAN_BSSID_EX *src, WLAN_BSSID_EX *dst, u8 feature)
{
u16 s_cap, d_cap;
if (rtw_bug_check(dst, src, &s_cap, &d_cap) == _FALSE)
return _FALSE;
_rtw_memcpy((u8 *)&s_cap, rtw_get_capability_from_ie(src->IEs), 2);
_rtw_memcpy((u8 *)&d_cap, rtw_get_capability_from_ie(dst->IEs), 2);
s_cap = le16_to_cpu(s_cap);
d_cap = le16_to_cpu(d_cap);
#ifdef CONFIG_P2P
if ((feature == 1) && /* 1: P2P supported */
(_rtw_memcmp(src->MacAddress, dst->MacAddress, ETH_ALEN) == _TRUE)
)
return _TRUE;
#endif
/* Wi-Fi driver doesn't consider the situation of BCN and ProbRsp sent from the same hidden AP,
* it considers these two packets are sent from different AP.
* Therefore, the scan queue may store two scan results of the same hidden AP, likes below.
*
* index bssid ch RSSI SdBm Noise age flag ssid
* 1 00:e0:4c:55:50:01 153 -73 -73 0 7044 [WPS][ESS] RTK5G
* 3 00:e0:4c:55:50:01 153 -73 -73 0 7044 [WPS][ESS]
*
* Original rules will compare Ssid, SsidLength, MacAddress, s_cap, d_cap at the same time.
* Wi-Fi driver will assume that the BCN and ProbRsp sent from the same hidden AP are the same network
* after we add an additional rule to compare SsidLength and Ssid.
* It means the scan queue will not store two scan results of the same hidden AP, it only store ProbRsp.
* For customer request.
*/
if (((_rtw_memcmp(src->MacAddress, dst->MacAddress, ETH_ALEN)) == _TRUE) &&
((s_cap & WLAN_CAPABILITY_IBSS) == (d_cap & WLAN_CAPABILITY_IBSS)) &&
((s_cap & WLAN_CAPABILITY_BSS) == (d_cap & WLAN_CAPABILITY_BSS))) {
if ((src->Ssid.SsidLength == dst->Ssid.SsidLength) &&
(((_rtw_memcmp(src->Ssid.Ssid, dst->Ssid.Ssid, src->Ssid.SsidLength)) == _TRUE) || //Case of normal AP
(is_all_null(src->Ssid.Ssid, src->Ssid.SsidLength) == _TRUE || is_all_null(dst->Ssid.Ssid, dst->Ssid.SsidLength) == _TRUE))) //Case of hidden AP
return _TRUE;
else if ((src->Ssid.SsidLength == 0 || dst->Ssid.SsidLength == 0)) //Case of hidden AP
return _TRUE;
else
return _FALSE;
} else {
return _FALSE;
}
}
struct wlan_network *_rtw_find_same_network(_queue *scanned_queue, struct wlan_network *network)
{
_list *phead, *plist;
struct wlan_network *found = NULL;
phead = get_list_head(scanned_queue);
plist = get_next(phead);
while (plist != phead) {
found = LIST_CONTAINOR(plist, struct wlan_network , list);
if (is_same_network(&network->network, &found->network, 0))
break;
plist = get_next(plist);
}
if (plist == phead)
found = NULL;
return found;
}
struct wlan_network *rtw_find_same_network(_queue *scanned_queue, struct wlan_network *network)
{
_irqL irqL;
struct wlan_network *found = NULL;
if (scanned_queue == NULL || network == NULL)
goto exit;
_enter_critical_bh(&scanned_queue->lock, &irqL);
found = _rtw_find_same_network(scanned_queue, network);
_exit_critical_bh(&scanned_queue->lock, &irqL);
exit:
return found;
}
struct wlan_network *rtw_get_oldest_wlan_network(_queue *scanned_queue)
{
_list *plist, *phead;
struct wlan_network *pwlan = NULL;
struct wlan_network *oldest = NULL;
phead = get_list_head(scanned_queue);
plist = get_next(phead);
while (1) {
if (rtw_end_of_queue_search(phead, plist) == _TRUE)
break;
pwlan = LIST_CONTAINOR(plist, struct wlan_network, list);
if (pwlan->fixed != _TRUE) {
if (oldest == NULL || rtw_time_after(oldest->last_scanned, pwlan->last_scanned))
oldest = pwlan;
}
plist = get_next(plist);
}
return oldest;
}
void update_network(WLAN_BSSID_EX *dst, WLAN_BSSID_EX *src,
_adapter *padapter, bool update_ie)
{
#if defined(DBG_RX_SIGNAL_DISPLAY_SSID_MONITORED) && 1
u8 ss_ori = dst->PhyInfo.SignalStrength;
u8 sq_ori = dst->PhyInfo.SignalQuality;
u8 ss_smp = src->PhyInfo.SignalStrength;
long rssi_smp = src->Rssi;
#endif
long rssi_ori = dst->Rssi;
u8 sq_smp = src->PhyInfo.SignalQuality;
u8 ss_final;
u8 sq_final;
long rssi_final;
#ifdef CONFIG_ANTENNA_DIVERSITY
rtw_hal_antdiv_rssi_compared(padapter, dst, src); /* this will update src.Rssi, need consider again */
#endif
#if defined(DBG_RX_SIGNAL_DISPLAY_SSID_MONITORED) && 1
if (strcmp(dst->Ssid.Ssid, DBG_RX_SIGNAL_DISPLAY_SSID_MONITORED) == 0) {
RTW_INFO(FUNC_ADPT_FMT" %s("MAC_FMT", ch%u) ss_ori:%3u, sq_ori:%3u, rssi_ori:%3ld, ss_smp:%3u, sq_smp:%3u, rssi_smp:%3ld\n"
, FUNC_ADPT_ARG(padapter)
, src->Ssid.Ssid, MAC_ARG(src->MacAddress), src->Configuration.DSConfig
, ss_ori, sq_ori, rssi_ori
, ss_smp, sq_smp, rssi_smp
);
}
#endif
/* The rule below is 1/5 for sample value, 4/5 for history value */
if (check_fwstate(&padapter->mlmepriv, _FW_LINKED) && is_same_network(&(padapter->mlmepriv.cur_network.network), src, 0)) {
/* Take the recvpriv's value for the connected AP*/
ss_final = padapter->recvpriv.signal_strength;
sq_final = padapter->recvpriv.signal_qual;
/* the rssi value here is undecorated, and will be used for antenna diversity */
if (sq_smp != 101) /* from the right channel */
rssi_final = (src->Rssi + dst->Rssi * 4) / 5;
else
rssi_final = rssi_ori;
} else {
if (sq_smp != 101) { /* from the right channel */
ss_final = ((u32)(src->PhyInfo.SignalStrength) + (u32)(dst->PhyInfo.SignalStrength) * 4) / 5;
sq_final = ((u32)(src->PhyInfo.SignalQuality) + (u32)(dst->PhyInfo.SignalQuality) * 4) / 5;
rssi_final = (src->Rssi + dst->Rssi * 4) / 5;
} else {
/* bss info not receving from the right channel, use the original RX signal infos */
ss_final = dst->PhyInfo.SignalStrength;
sq_final = dst->PhyInfo.SignalQuality;
rssi_final = dst->Rssi;
}
}
if (update_ie) {
dst->Reserved[0] = src->Reserved[0];
dst->Reserved[1] = src->Reserved[1];
_rtw_memcpy((u8 *)dst, (u8 *)src, get_WLAN_BSSID_EX_sz(src));
}
dst->PhyInfo.SignalStrength = ss_final;
dst->PhyInfo.SignalQuality = sq_final;
dst->Rssi = rssi_final;
#if defined(DBG_RX_SIGNAL_DISPLAY_SSID_MONITORED) && 1
if (strcmp(dst->Ssid.Ssid, DBG_RX_SIGNAL_DISPLAY_SSID_MONITORED) == 0) {
RTW_INFO(FUNC_ADPT_FMT" %s("MAC_FMT"), SignalStrength:%u, SignalQuality:%u, RawRSSI:%ld\n"
, FUNC_ADPT_ARG(padapter)
, dst->Ssid.Ssid, MAC_ARG(dst->MacAddress), dst->PhyInfo.SignalStrength, dst->PhyInfo.SignalQuality, dst->Rssi);
}
#endif
#if 0 /* old codes, may be useful one day...
* RTW_INFO("update_network: rssi=0x%lx dst->Rssi=%d ,dst->Rssi=0x%lx , src->Rssi=0x%lx",(dst->Rssi+src->Rssi)/2,dst->Rssi,dst->Rssi,src->Rssi); */
if (check_fwstate(&padapter->mlmepriv, _FW_LINKED) && is_same_network(&(padapter->mlmepriv.cur_network.network), src)) {
/* RTW_INFO("b:ssid=%s update_network: src->rssi=0x%d padapter->recvpriv.ui_rssi=%d\n",src->Ssid.Ssid,src->Rssi,padapter->recvpriv.signal); */
if (padapter->recvpriv.signal_qual_data.total_num++ >= PHY_LINKQUALITY_SLID_WIN_MAX) {
padapter->recvpriv.signal_qual_data.total_num = PHY_LINKQUALITY_SLID_WIN_MAX;
last_evm = padapter->recvpriv.signal_qual_data.elements[padapter->recvpriv.signal_qual_data.index];
padapter->recvpriv.signal_qual_data.total_val -= last_evm;
}
padapter->recvpriv.signal_qual_data.total_val += query_rx_pwr_percentage(src->Rssi);
padapter->recvpriv.signal_qual_data.elements[padapter->recvpriv.signal_qual_data.index++] = query_rx_pwr_percentage(src->Rssi);
if (padapter->recvpriv.signal_qual_data.index >= PHY_LINKQUALITY_SLID_WIN_MAX)
padapter->recvpriv.signal_qual_data.index = 0;
/* RTW_INFO("Total SQ=%d pattrib->signal_qual= %d\n", padapter->recvpriv.signal_qual_data.total_val, src->Rssi); */
/* <1> Showed on UI for user,in percentage. */
tmpVal = padapter->recvpriv.signal_qual_data.total_val / padapter->recvpriv.signal_qual_data.total_num;
padapter->recvpriv.signal = (u8)tmpVal; /* Link quality */
src->Rssi = translate_percentage_to_dbm(padapter->recvpriv.signal) ;
} else {
/* RTW_INFO("ELSE:ssid=%s update_network: src->rssi=0x%d dst->rssi=%d\n",src->Ssid.Ssid,src->Rssi,dst->Rssi); */
src->Rssi = (src->Rssi + dst->Rssi) / 2; /* dBM */
}
/* RTW_INFO("a:update_network: src->rssi=0x%d padapter->recvpriv.ui_rssi=%d\n",src->Rssi,padapter->recvpriv.signal); */
#endif
}
static void update_current_network(_adapter *adapter, WLAN_BSSID_EX *pnetwork)
{
struct mlme_priv *pmlmepriv = &(adapter->mlmepriv);
rtw_bug_check(&(pmlmepriv->cur_network.network),
&(pmlmepriv->cur_network.network),
&(pmlmepriv->cur_network.network),
&(pmlmepriv->cur_network.network));
if ((check_fwstate(pmlmepriv, _FW_LINKED) == _TRUE) && (is_same_network(&(pmlmepriv->cur_network.network), pnetwork, 0))) {
/* if(pmlmepriv->cur_network.network.IELength<= pnetwork->IELength) */
{
update_network(&(pmlmepriv->cur_network.network), pnetwork, adapter, _TRUE);
rtw_update_protection(adapter, (pmlmepriv->cur_network.network.IEs) + sizeof(NDIS_802_11_FIXED_IEs),
pmlmepriv->cur_network.network.IELength);
}
}
}
/*
Caller must hold pmlmepriv->lock first.
*/
bool rtw_update_scanned_network(_adapter *adapter, WLAN_BSSID_EX *target)
{
_irqL irqL;
_list *plist, *phead;
ULONG bssid_ex_sz;
struct mlme_priv *pmlmepriv = &(adapter->mlmepriv);
#ifdef CONFIG_P2P
struct wifidirect_info *pwdinfo = &(adapter->wdinfo);
#endif /* CONFIG_P2P */
_queue *queue = &(pmlmepriv->scanned_queue);
struct wlan_network *pnetwork = NULL;
struct wlan_network *choice = NULL;
int target_find = 0;
u8 feature = 0;
bool update_ie = _FALSE;
_enter_critical_bh(&queue->lock, &irqL);
phead = get_list_head(queue);
plist = get_next(phead);
#if 0
RTW_INFO("%s => ssid:%s , rssi:%ld , ss:%d\n",
__func__, target->Ssid.Ssid, target->Rssi, target->PhyInfo.SignalStrength);
#endif
#ifdef CONFIG_P2P
if (!rtw_p2p_chk_state(pwdinfo, P2P_STATE_NONE))
feature = 1; /* p2p enable */
#endif
while (1) {
if (rtw_end_of_queue_search(phead, plist) == _TRUE)
break;
pnetwork = LIST_CONTAINOR(plist, struct wlan_network, list);
rtw_bug_check(pnetwork, pnetwork, pnetwork, pnetwork);
#ifdef CONFIG_P2P
if (!rtw_p2p_chk_state(pwdinfo, P2P_STATE_NONE) &&
(_rtw_memcmp(pnetwork->network.MacAddress, target->MacAddress, ETH_ALEN) == _TRUE)) {
target_find = 1;
break;
}
#endif
if (is_same_network(&(pnetwork->network), target, feature)) {
target_find = 1;
break;
}
if (rtw_roam_flags(adapter)) {
/* TODO: don't select netowrk in the same ess as choice if it's new enough*/
}
#ifdef CONFIG_RSSI_PRIORITY
if ((choice == NULL) || (pnetwork->network.PhyInfo.SignalStrength < choice->network.PhyInfo.SignalStrength))
#ifdef CONFIG_RTW_MESH
if (!MLME_IS_MESH(adapter) || check_fwstate(pmlmepriv, WIFI_ASOC_STATE) == _FALSE
|| !rtw_bss_is_same_mbss(&pmlmepriv->cur_network.network, &pnetwork->network))
#endif
choice = pnetwork;
#else
if (choice == NULL || rtw_time_after(choice->last_scanned, pnetwork->last_scanned))
#ifdef CONFIG_RTW_MESH
if (!MLME_IS_MESH(adapter) || check_fwstate(pmlmepriv, WIFI_ASOC_STATE) == _FALSE
|| !rtw_bss_is_same_mbss(&pmlmepriv->cur_network.network, &pnetwork->network))
#endif
choice = pnetwork;
#endif