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8821cu-20210916
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8821cu-20210916/core/rtw_wnm.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.
*
*****************************************************************************/
#include <drv_types.h>
#include <hal_data.h>
#ifndef RTW_WNM_DBG
#define RTW_WNM_DBG 0
#endif
#if RTW_WNM_DBG
#define RTW_WNM_INFO(fmt, arg...) \
RTW_INFO(fmt, arg)
#define RTW_WNM_DUMP(str, data, len) \
RTW_INFO_DUMP(str, data, len)
#else
#define RTW_WNM_INFO(fmt, arg...) do {} while (0)
#define RTW_WNM_DUMP(str, data, len) do {} while (0)
#endif
#ifdef CONFIG_RTW_WNM
static u32 wnm_defualt_validity_time = 6000;
static u32 wnm_default_disassoc_time = 5000;
static u32 wnm_disassoc_wait_time = 500;
/* for wifi test, need more validity time to wait scan done */
static u32 wnm_ext_validity_time = 4000;
static void rtw_wmn_btm_cache_update(_adapter *padapter, struct btm_req_hdr *phdr)
{
struct btm_rpt_cache *pcache = &(padapter->mlmepriv.nb_info.btm_cache);
pcache->dialog_token = phdr->dialog_token;
pcache->req_mode = phdr->req_mode;
pcache->disassoc_timer = le16_to_cpu(phdr->disassoc_timer);
if (phdr->validity_interval > 0)
pcache->validity_interval = phdr->validity_interval;
pcache->term_duration.id = phdr->term_duration.id;
pcache->term_duration.len = phdr->term_duration.len;
pcache->term_duration.tsf = le64_to_cpu(phdr->term_duration.tsf);
pcache->term_duration.duration = le16_to_cpu(phdr->term_duration.duration);
RTW_WNM_INFO("%s: req_mode(0x%02x), disassoc_timer(0x%04x), "
"validity_interval(0x%02x %s), tsf(0x%llx), duration(0x%02x)\n",
__func__, pcache->req_mode, pcache->disassoc_timer,
pcache->validity_interval, (!phdr->validity_interval)?"default":"",
pcache->term_duration.tsf,
pcache->term_duration.duration);
if (pcache->validity_interval > 0) {
pcache->validity_time = pcache->validity_interval * 100;
#ifdef CONFIG_RTW_MBO
if (rtw_mbo_wifi_logo_test(padapter))
pcache->validity_time += wnm_ext_validity_time;
#endif
}
if (pcache->disassoc_timer > 0) {
pcache->disassoc_time= pcache->disassoc_timer * 100;
#ifdef CONFIG_RTW_MBO
if (rtw_mbo_wifi_logo_test(padapter))
pcache->disassoc_time += wnm_ext_validity_time;
#endif
}
pcache->req_stime = rtw_get_current_time();
RTW_WNM_INFO("%s: validity_time=%u, disassoc_time=%u\n",
__func__, pcache->validity_time, pcache->disassoc_time);
}
static u8 rtw_wnm_btm_candidate_validity(struct btm_rpt_cache *pcache, u8 flag)
{
u8 is_validity =_TRUE;
u32 req_validity_time = rtw_get_passing_time_ms(pcache->req_stime);
if ((flag & BIT(0)) && (req_validity_time > pcache->validity_time))
is_validity = _FALSE;
if ((flag & BIT(1)) && (req_validity_time > pcache->disassoc_time))
is_validity = _FALSE;
RTW_WNM_INFO("%s : validity=%u, rtime=%u, vtime=%u. dtime=%u\n",
__func__, is_validity, req_validity_time,
pcache->validity_time, pcache->disassoc_time);
return is_validity;
}
u8 rtw_wmn_btm_rsp_reason_decision(_adapter *padapter, u8* req_mode)
{
struct recv_priv *precvpriv = &padapter->recvpriv;
struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
u8 reason = 0;
if (!rtw_wnm_btm_diff_bss(padapter)) {
/* Reject - No suitable BSS transition candidates */
reason = 7;
goto candidate_remove;
}
#ifdef CONFIG_RTW_80211R
if (rtw_ft_chk_flags(padapter, RTW_FT_BTM_ROAM)) {
/* Accept */
reason = 0;
goto under_survey;
}
#endif
if (((*req_mode) & DISASSOC_IMMINENT) == 0) {
/* Reject - Unspecified reject reason */
reason = 1;
goto candidate_remove;
}
if (precvpriv->signal_strength_data.avg_val >= pmlmepriv->roam_rssi_threshold) {
reason = 1;
RTW_WNM_INFO("%s : Reject - under high roam rssi(%u, %u) \n",
__func__, precvpriv->signal_strength_data.avg_val,
pmlmepriv->roam_rssi_threshold);
goto candidate_remove;
}
#ifdef CONFIG_RTW_80211R
under_survey:
if (check_fwstate(pmlmepriv, WIFI_UNDER_SURVEY)) {
RTW_WNM_INFO("%s reject due to _FW_UNDER_SURVEY\n", __func__);
reason = 1;
}
#endif
candidate_remove:
if (reason !=0)
rtw_wnm_reset_btm_candidate(&pmlmepriv->nb_info);
return reason;
}
static u32 rtw_wnm_btm_candidates_offset_get(u8* pframe)
{
u32 offset = 0;
if (!pframe)
return 0;
offset += 7;
/* BSS Termination Duration check */
if (wnm_btm_bss_term_inc(pframe))
offset += 12;
/* Session Information URL check*/
if (wnm_btm_ess_disassoc_im(pframe)) {
/*URL length field + URL variable length*/
offset = 1 + *(pframe + offset);
}
RTW_WNM_INFO("%s : hdr offset=%u\n", __func__, offset);
return offset;
}
static void rtw_wnm_btm_req_hdr_parsing(u8* pframe, struct btm_req_hdr *phdr)
{
u8 *pos;
u32 offset = 0;
if (!pframe || !phdr)
return;
_rtw_memset(phdr, 0, sizeof(struct btm_req_hdr));
phdr->dialog_token = wnm_btm_dialog_token(pframe);
phdr->req_mode = wnm_btm_req_mode(pframe);
phdr->disassoc_timer = wnm_btm_disassoc_timer(pframe);
phdr->validity_interval = wnm_btm_valid_interval(pframe);
if (wnm_btm_bss_term_inc(pframe)) {
pos = wnm_btm_term_duration_offset(pframe);
if (*pos == WNM_BTM_TERM_DUR_SUBEID) {
phdr->term_duration.id = *pos;
phdr->term_duration.len = *(pos + 1);
phdr->term_duration.tsf = *((u64*)(pos + 2));
phdr->term_duration.duration= *((u16*)(pos + 10));
} else
RTW_WNM_INFO("%s : invaild BSS Termination Duration content!\n", __func__);
}
RTW_WNM_INFO("WNM: req_mode(0x%02x), disassoc_timer(0x%04x), validity_interval(0x%02x)\n",
phdr->req_mode, phdr->disassoc_timer, phdr->validity_interval);
if (wnm_btm_bss_term_inc(pframe))
RTW_WNM_INFO("WNM: tsf(0x%llx), duration(0x%4x)\n",
phdr->term_duration.tsf, phdr->term_duration.duration);
}
u8 rtw_wnm_btm_reassoc_req(_adapter *padapter)
{
struct mlme_ext_priv *pmlmeext = &(padapter->mlmeextpriv);
struct mlme_ext_info *pmlmeinfo = &(pmlmeext->mlmext_info);
struct mlme_priv *pmlmepriv = &(padapter->mlmepriv);
struct roam_nb_info *pnb = &(pmlmepriv->nb_info);
u8 breassoc = _FALSE;
if (_rtw_memcmp(get_my_bssid(&(pmlmeinfo->network)),
pnb->roam_target_addr, ETH_ALEN)) {
RTW_WNM_INFO("%s : bss "MAC_FMT" found in roam_target "MAC_FMT"\n",
__func__, MAC_ARG(get_my_bssid(&(pmlmeinfo->network))),
MAC_ARG(pnb->roam_target_addr));
breassoc = _TRUE;
}
return breassoc;
}
void rtw_wnm_roam_scan_hdl(void *ctx)
{
_adapter *padapter = (_adapter *)ctx;
struct mlme_priv *pmlmepriv = &(padapter->mlmepriv);
if (rtw_is_scan_deny(padapter))
RTW_WNM_INFO("%s: roam scan would abort by scan_deny!\n", __func__);
#ifdef CONFIG_RTW_80211R
if (rtw_ft_chk_flags(padapter, RTW_FT_BTM_ROAM)) {
pmlmepriv->need_to_roam = _TRUE;
rtw_set_to_roam(padapter, padapter->registrypriv.max_roaming_times);
RTW_WNM_INFO("%s : enable roaming\n", __func__);
}
rtw_drv_scan_by_self(padapter, RTW_AUTO_SCAN_REASON_ROAM);
#endif
}
static void rtw_wnm_roam_scan(_adapter *padapter)
{
struct roam_nb_info *pnb = &(padapter->mlmepriv.nb_info);
if (rtw_is_scan_deny(padapter)) {
_cancel_timer_ex(&pnb->roam_scan_timer);
_set_timer(&pnb->roam_scan_timer, 1000);
} else
rtw_wnm_roam_scan_hdl((void *)padapter);
}
void rtw_wnm_disassoc_chk_hdl(void *ctx)
{
_adapter *padapter = (_adapter *)ctx;
struct mlme_priv *pmlmepriv = &(padapter->mlmepriv);
struct roam_nb_info *pnb = &(pmlmepriv->nb_info);
RTW_WNM_INFO("%s : expired\n", __func__);
if (pnb->disassoc_waiting <= 0 ) {
RTW_WNM_INFO("%s : btm roam is interrupted by disassoc\n", __func__);
return;
}
pnb->disassoc_waiting = _FALSE;
rtw_wnm_roam_scan(padapter);
}
u8 rtw_wnm_try_btm_roam_imnt(_adapter *padapter)
{
struct mlme_priv *pmlmepriv = &(padapter->mlmepriv);
struct roam_nb_info *pnb = &(pmlmepriv->nb_info);
struct btm_rpt_cache *pcache = &(pnb->btm_cache);
u8 reason = 0, flag = 0;
if (!rtw_wnm_btm_preference_cap(padapter)) {
RTW_WNM_INFO("%s : no btm candidate can be used!\n", __func__);
return 1;
}
flag = BIT(0) | BIT(1);
if (!rtw_wnm_btm_candidate_validity(pcache, flag))
return 1;
#ifdef CONFIG_RTW_MBO
if (!rtw_mbo_wifi_logo_test(padapter)
&& !(pcache->req_mode & DISASSOC_IMMINENT)) {
RTW_WNM_INFO("%s : non-disassoc imminet req\n", __func__);
return 1;
}
#endif
RTW_WNM_INFO("%s : disassoc_waiting(%d)\n", __func__, pnb->disassoc_waiting);
if (pnb->disassoc_waiting) {
_cancel_timer_ex(&pnb->disassoc_chk_timer);
pnb->disassoc_waiting = _FALSE;
rtw_wnm_roam_scan_hdl((void *)padapter);
} else if (!pnb->disassoc_waiting)
RTW_WNM_INFO("%s : waiting for btm roaming start/finish\n", __func__);
else
reason = 1;
return reason;
}
void rtw_wnm_process_btm_req(_adapter *padapter, u8* pframe, u32 frame_len)
{
struct roam_nb_info *pnb = &(padapter->mlmepriv.nb_info);
struct btm_req_hdr req_hdr;
u8 *ptr, reason;
u32 elem_len, offset;
rtw_wnm_btm_req_hdr_parsing(pframe, &req_hdr);
offset = rtw_wnm_btm_candidates_offset_get(pframe);
if (offset == 0)
return;
if ((frame_len - offset) <= 15) {
RTW_INFO("WNM : Reject - no suitable BSS transition candidates!\n");
rtw_wnm_issue_action(padapter,
RTW_WLAN_ACTION_WNM_BTM_RSP, 7, req_hdr.dialog_token);
return;
}
rtw_wmn_btm_cache_update(padapter, &req_hdr);
ptr = (pframe + offset);
elem_len = (frame_len - offset);
rtw_wnm_btm_candidates_survey(padapter, ptr, elem_len, _TRUE);
reason = rtw_wmn_btm_rsp_reason_decision(padapter, &pframe[3]);
#ifdef CONFIG_RTW_MBO
/* for wifi-test; AP2 could power-off when BTM-req received */
if ((reason > 0) && (rtw_mbo_wifi_logo_test(padapter))) {
_rtw_memcpy(pnb->roam_target_addr, pnb->nb_rpt[0].bssid, ETH_ALEN);
RTW_WNM_INFO("%s : used report 0 as roam_target_addr(reason=%u)\n",
__func__, reason);
reason = 0;
pnb->preference_en = _TRUE;
pnb->nb_rpt_valid = _FALSE;
}
#endif
rtw_wnm_issue_action(padapter,
RTW_WLAN_ACTION_WNM_BTM_RSP, reason, req_hdr.dialog_token);
if (reason == 0) {
pnb->disassoc_waiting = _TRUE;
_set_timer(&pnb->disassoc_chk_timer, wnm_disassoc_wait_time);
}
}
void rtw_wnm_reset_btm_candidate(struct roam_nb_info *pnb)
{
pnb->preference_en = _FALSE;
_rtw_memset(pnb->roam_target_addr, 0, ETH_ALEN);
}
void rtw_wnm_reset_btm_cache(_adapter *padapter)
{
struct mlme_priv *pmlmepriv = &(padapter->mlmepriv);
struct roam_nb_info *pnb = &(pmlmepriv->nb_info);
struct btm_rpt_cache *pcache = &(pnb->btm_cache);
u8 flag = 0;
flag |= BIT(0);
if (rtw_wnm_btm_candidate_validity(pcache, flag))
return;
rtw_wnm_reset_btm_candidate(pnb);
_rtw_memset(pcache, 0, sizeof(struct btm_rpt_cache));
pcache->validity_time = wnm_defualt_validity_time;
pcache->disassoc_time= wnm_default_disassoc_time;
#ifdef CONFIG_RTW_80211R
if (rtw_ft_chk_flags(padapter, RTW_FT_BTM_ROAM)) {
pmlmepriv->need_to_roam = _FALSE;
rtw_set_to_roam(padapter, 0);
RTW_WNM_INFO("%s : disabled roaming\n", __func__);
}
#endif
}
void rtw_wnm_reset_btm_state(_adapter *padapter)
{
struct roam_nb_info *pnb = &(padapter->mlmepriv.nb_info);
pnb->last_nb_rpt_entries = 0;
pnb->nb_rpt_is_same = _TRUE;
pnb->nb_rpt_valid = _FALSE;
pnb->nb_rpt_ch_list_num = 0;
pnb->disassoc_waiting = -1;
_rtw_memset(&pnb->nb_rpt, 0, sizeof(pnb->nb_rpt));
_rtw_memset(&pnb->nb_rpt_ch_list, 0, sizeof(pnb->nb_rpt_ch_list));
rtw_wnm_reset_btm_cache(padapter);
}
u32 rtw_wnm_btm_rsp_candidates_sz_get(
_adapter *padapter, u8* pframe, u32 frame_len)
{
u32 num = 0, sz = 0;
u8 status;
u8 *ptr;
if (!pframe || (frame_len <= 5))
goto exit;
status = wnm_btm_rsp_status(pframe);
if (((status != 0) && (status != 6)) || (frame_len < 23))
goto exit;
if (status == 0)
num = (frame_len - 5 - ETH_ALEN)/18;
else
num = (frame_len - 5)/18;
sz = sizeof(struct wnm_btm_cant) * num;
exit:
RTW_WNM_INFO("WNM: %u candidates(sz=%u) in BTM rsp\n", num, sz);
return sz;
}
void rtw_wnm_process_btm_rsp(_adapter *padapter,
u8* pframe, u32 frame_len, struct btm_rsp_hdr *prsp)
{
prsp->dialog_token = wnm_btm_dialog_token(pframe);
prsp->status = wnm_btm_rsp_status(pframe);
prsp->termination_delay = wnm_btm_rsp_term_delay(pframe);
if ((pframe == NULL) || (frame_len == 0))
return;
prsp->status = *(pframe + 3);
prsp->termination_delay = *(pframe + 4);
/* no Target BSSID & Candidate in frame */
if (frame_len <= 5)
return;
/* accept */
if ((prsp->status == 0) && (frame_len >= 11))
_rtw_memcpy(prsp->bssid, (pframe + 5), ETH_ALEN);
/* STA BSS Transition Candidate List provided,
and at least one NB report exist */
if (((prsp->status == 0) || (prsp->status == 6)) && (frame_len >= 23)) {
struct wnm_btm_cant cant;
u8 *ptr, *pend;
u32 idx = 0;
ptr = pframe + 5;
if (prsp->status == 0)
ptr += ETH_ALEN;
pend = ptr + frame_len;
prsp->candidates_num = 0;
while (ptr < pend) {
if (*ptr != RTW_WLAN_ACTION_WNM_NB_RPT_ELEM)
break;
_rtw_memset(&cant, 0, sizeof(cant));
cant.nb_rpt.id = *ptr;
cant.nb_rpt.len = *(ptr + 1);
_rtw_memcpy(cant.nb_rpt.bssid, (ptr + 2), ETH_ALEN);
cant.nb_rpt.bss_info = *((u32 *)(ptr + 8));
cant.nb_rpt.reg_class = *(ptr + 12);
cant.nb_rpt.ch_num = *(ptr + 13);
cant.nb_rpt.phy_type= *(ptr + 14);
if (*(ptr + 15) == WNM_BTM_CAND_PREF_SUBEID)
cant.preference = *(ptr + 17);
ptr = ptr + cant.nb_rpt.len + 2;
if (prsp->pcandidates) {
prsp->candidates_num++;
_rtw_memcpy((prsp->pcandidates + sizeof(cant) * idx), &cant, sizeof(cant));
}
idx++;
RTW_WNM_INFO("WNM: btm rsp candidate bssid("MAC_FMT
") ,bss_info(0x%04X), reg_class(0x%02X), ch(%d),"
" phy_type(0x%02X), preference(0x%02X)\n",
MAC_ARG(cant.nb_rpt.bssid), cant.nb_rpt.bss_info,
cant.nb_rpt.reg_class, cant.nb_rpt.ch_num,
cant.nb_rpt.phy_type, cant.preference);
if ((prsp->pcandidates) && (prsp->candidates_num > 0))
RTW_WNM_DUMP("WNM candidates: ", prsp->pcandidates,
(sizeof(struct wnm_btm_cant) * prsp->candidates_num));
}
}
}
void rtw_wnm_hdr_init(_adapter *padapter,
struct xmit_frame *pactionframe, u8 *pmac,
u8 action, u8 **pcontent)
{
struct mlme_ext_priv *pmlmeext = &(padapter->mlmeextpriv);
struct mlme_ext_info *pmlmeinfo = &(pmlmeext->mlmext_info);
struct pkt_attrib *pattrib;
struct rtw_ieee80211_hdr *pwlanhdr;
u16 *pfctrl;
u8 category;
pattrib = &(pactionframe->attrib);
update_mgntframe_attrib(padapter, pattrib);
_rtw_memset(pactionframe->buf_addr, 0, (WLANHDR_OFFSET + TXDESC_OFFSET));
*pcontent = (u8 *)(pactionframe->buf_addr + TXDESC_OFFSET);
pwlanhdr = (struct rtw_ieee80211_hdr *)(*pcontent);
pfctrl = &(pwlanhdr->frame_ctl);
*(pfctrl) = 0;
_rtw_memcpy(pwlanhdr->addr1, pmac, ETH_ALEN);
_rtw_memcpy(pwlanhdr->addr2, adapter_mac_addr(padapter), ETH_ALEN);
_rtw_memcpy(pwlanhdr->addr3, get_my_bssid(&pmlmeinfo->network), ETH_ALEN);
SetSeqNum(pwlanhdr, pmlmeext->mgnt_seq);
pmlmeext->mgnt_seq++;
set_frame_sub_type(*pcontent, WIFI_ACTION);
*pcontent += sizeof(struct rtw_ieee80211_hdr_3addr);
pattrib->pktlen = sizeof(struct rtw_ieee80211_hdr_3addr);
category = RTW_WLAN_CATEGORY_WNM;
*pcontent = rtw_set_fixed_ie(*pcontent, 1, &(category), &(pattrib->pktlen));
*pcontent = rtw_set_fixed_ie(*pcontent, 1, &(action), &(pattrib->pktlen));
}
void rtw_wnm_build_btm_req_ies(_adapter *padapter,
u8 **pframe, struct pkt_attrib *pattrib,
struct btm_req_hdr *phdr, u8 *purl, u32 url_len,
u8 *pcandidates, u8 candidate_cnt)
{
int i;
*pframe = rtw_set_fixed_ie(*pframe, 1,
&phdr->dialog_token, &(pattrib->pktlen));
*pframe = rtw_set_fixed_ie(*pframe, 1,
&phdr->req_mode, &(pattrib->pktlen));
*pframe = rtw_set_fixed_ie(*pframe, 2,
(u8 *)&phdr->disassoc_timer, &(pattrib->pktlen));
*pframe = rtw_set_fixed_ie(*pframe, 1,
&phdr->validity_interval, &(pattrib->pktlen));
if (phdr->req_mode & BSS_TERMINATION_INCLUDED) {
*pframe = rtw_set_fixed_ie(*pframe, 1,
&phdr->term_duration.id, &(pattrib->pktlen));
*pframe = rtw_set_fixed_ie(*pframe, 1,
&phdr->term_duration.len, &(pattrib->pktlen));
*pframe = rtw_set_fixed_ie(*pframe, 8,
(u8 *)&phdr->term_duration.tsf, &(pattrib->pktlen));
*pframe = rtw_set_fixed_ie(*pframe, 2,
(u8 *)&phdr->term_duration.duration, &(pattrib->pktlen));
}
if ((purl != NULL) && (url_len > 0) &&
(phdr->req_mode & ESS_DISASSOC_IMMINENT)) {
*pframe = rtw_set_fixed_ie(*pframe, 1,
(u8 *)&url_len, &(pattrib->pktlen));
*pframe = rtw_set_fixed_ie(*pframe,
url_len, purl, &(pattrib->pktlen));
}
if ((pcandidates != NULL) && (candidate_cnt > 0)) {
for (i=0; i<candidate_cnt; i++) {
struct wnm_btm_cant *pcandidate = \
((struct wnm_btm_cant *)pcandidates) + i;
struct nb_rpt_hdr *prpt = &(pcandidate->nb_rpt);
*pframe = rtw_set_fixed_ie(*pframe, 1,
&pcandidate->nb_rpt.id, &(pattrib->pktlen));
*pframe = rtw_set_fixed_ie(*pframe, 1,
&pcandidate->nb_rpt.len, &(pattrib->pktlen));
*pframe = rtw_set_fixed_ie(*pframe, ETH_ALEN,
pcandidate->nb_rpt.bssid, &(pattrib->pktlen));
*pframe = rtw_set_fixed_ie(*pframe, 4,
(u8 *)&pcandidate->nb_rpt.bss_info, &(pattrib->pktlen));
*pframe = rtw_set_fixed_ie(*pframe, 1,
&pcandidate->nb_rpt.reg_class, &(pattrib->pktlen));
*pframe = rtw_set_fixed_ie(*pframe, 1,
&pcandidate->nb_rpt.ch_num, &(pattrib->pktlen));
*pframe = rtw_set_fixed_ie(*pframe, 1,
&pcandidate->nb_rpt.phy_type, &(pattrib->pktlen));
*pframe = rtw_set_ie(*pframe, WNM_BTM_CAND_PREF_SUBEID, 1,
(u8 *)&pcandidate->preference, &(pattrib->pktlen));
}
}
}
void rtw_wnm_issue_btm_req(_adapter *padapter,
u8 *pmac, struct btm_req_hdr *phdr, u8 *purl, u32 url_len,
u8 *pcandidates, u8 candidate_cnt)
{
struct roam_nb_info *pnb = &(padapter->mlmepriv.nb_info);
struct xmit_priv *pxmitpriv = &(padapter->xmitpriv);
struct xmit_frame *pmgntframe;
struct pkt_attrib *pattrib;
u8 action, *pframe, dialog_token = 0;
if (!pmac || is_zero_mac_addr(pmac)
|| is_broadcast_mac_addr(pmac))
return ;
if ((pmgntframe = alloc_mgtxmitframe(pxmitpriv)) == NULL)
return ;
rtw_wnm_hdr_init(padapter, pmgntframe, pmac,
RTW_WLAN_ACTION_WNM_BTM_REQ, &pframe);
pattrib = &(pmgntframe->attrib);
rtw_wnm_build_btm_req_ies(padapter, &pframe, pattrib,
phdr, purl, url_len, pcandidates, candidate_cnt);
if (0) {
u8 *__p = (u8 *)(pmgntframe->buf_addr + TXDESC_OFFSET);
RTW_WNM_DUMP("WNM BTM REQ :", __p, pattrib->pktlen);
}
pattrib->last_txcmdsz = pattrib->pktlen;
dump_mgntframe(padapter, pmgntframe);
RTW_INFO("WNM: BSS Transition Management Request sent\n");
}
void rtw_wnm_issue_action(_adapter *padapter,
u8 action, u8 reason, u8 dialog)
{
struct mlme_priv *pmlmepriv = &(padapter->mlmepriv);
struct xmit_priv *pxmitpriv = &(padapter->xmitpriv);
struct mlme_ext_priv *pmlmeext = &(padapter->mlmeextpriv);
struct mlme_ext_info *pmlmeinfo = &(pmlmeext->mlmext_info);
struct xmit_frame *pmgntframe;
struct rtw_ieee80211_hdr *pwlanhdr;
struct pkt_attrib *pattrib;
u8 category, termination_delay, *pframe, dialog_token = 0;
#ifdef CONFIG_RTW_MBO
u8 mbo_trans_rej_res = 1; /* Unspecified reason */
u8 mbo_notif_req_type ;
#endif
u16 *fctrl;
if ((pmgntframe = alloc_mgtxmitframe(pxmitpriv)) == NULL)
return ;
pattrib = &(pmgntframe->attrib);
update_mgntframe_attrib(padapter, pattrib);
_rtw_memset(pmgntframe->buf_addr, 0, (WLANHDR_OFFSET + TXDESC_OFFSET));
pframe = (u8 *)(pmgntframe->buf_addr + TXDESC_OFFSET);
pwlanhdr = (struct rtw_ieee80211_hdr *)pframe;
fctrl = &(pwlanhdr->frame_ctl);
*(fctrl) = 0;
_rtw_memcpy(pwlanhdr->addr1, get_my_bssid(&pmlmeinfo->network), ETH_ALEN);
_rtw_memcpy(pwlanhdr->addr2, adapter_mac_addr(padapter), ETH_ALEN);
_rtw_memcpy(pwlanhdr->addr3, get_my_bssid(&pmlmeinfo->network), ETH_ALEN);
SetSeqNum(pwlanhdr, pmlmeext->mgnt_seq);
pmlmeext->mgnt_seq++;
set_frame_sub_type(pframe, WIFI_ACTION);
pframe += sizeof(struct rtw_ieee80211_hdr_3addr);
pattrib->pktlen = sizeof(struct rtw_ieee80211_hdr_3addr);
category = RTW_WLAN_CATEGORY_WNM;
pframe = rtw_set_fixed_ie(pframe, 1, &(category), &(pattrib->pktlen));
pframe = rtw_set_fixed_ie(pframe, 1, &(action), &(pattrib->pktlen));
switch (action) {
case RTW_WLAN_ACTION_WNM_BTM_QUERY:
dialog_token++;
pframe = rtw_set_fixed_ie(pframe, 1, &(dialog_token), &(pattrib->pktlen));
pframe = rtw_set_fixed_ie(pframe, 1, &(reason), &(pattrib->pktlen));
RTW_INFO("WNM: BSS Transition Management Query sent\n");
break;
case RTW_WLAN_ACTION_WNM_BTM_RSP:
dialog_token = dialog;
termination_delay = 0;
pframe = rtw_set_fixed_ie(pframe, 1, &(dialog_token), &(pattrib->pktlen));
pframe = rtw_set_fixed_ie(pframe, 1, &(reason), &(pattrib->pktlen));
pframe = rtw_set_fixed_ie(pframe, 1, &(termination_delay), &(pattrib->pktlen));
if (!reason && !is_zero_mac_addr(pmlmepriv->nb_info.roam_target_addr)) {
pframe = rtw_set_fixed_ie(pframe, 6,
pmlmepriv->nb_info.roam_target_addr, &(pattrib->pktlen));
}
#ifdef CONFIG_RTW_MBO
rtw_mbo_build_trans_reject_reason_attr(padapter,
&pframe, pattrib, &mbo_trans_rej_res);
#endif
RTW_INFO("WNM: BSS Transition Management Response sent(reason:%d)\n", reason);
break;
case RTW_WLAN_ACTION_WNM_NOTIF_REQ:
#ifdef CONFIG_RTW_MBO
dialog_token++;
mbo_notif_req_type = WLAN_EID_VENDOR_SPECIFIC;
pframe = rtw_set_fixed_ie(pframe, 1, &(dialog_token), &(pattrib->pktlen));
pframe = rtw_set_fixed_ie(pframe, 1, &(mbo_notif_req_type), &(pattrib->pktlen));
rtw_mbo_build_wnm_notification(padapter, &pframe, pattrib);
RTW_INFO("WNM: Notification request sent\n");
#endif
break;
default:
goto exit;
}
pattrib->last_txcmdsz = pattrib->pktlen;
dump_mgntframe(padapter, pmgntframe);
exit:
return;
}
/* argument req_ie@cfg80211_roamed()/cfg80211_connect_result()
is association request IEs format. if driver used reassoc-req format,
RSN IE could not be parsed @supplicant process */
void rtw_wnm_update_reassoc_req_ie(_adapter *padapter)
{
struct mlme_priv *pmlmepriv = &(padapter->mlmepriv);
u32 dup_len, offset;
u8 *pdup;
if (!pmlmepriv->assoc_req || !pmlmepriv->assoc_req_len)
return;
/* total len is assoc req len without Current AP Field*/
dup_len = pmlmepriv->assoc_req_len - ETH_ALEN;
/* offset is a len of 80211 header + capability(2B) + listen interval(2B) */
offset = sizeof(struct rtw_ieee80211_hdr_3addr) + 4;
pdup = rtw_zmalloc(dup_len);
if (pdup) {
/* remove Current AP Field @reassoc req IE */
_rtw_memcpy(pdup, pmlmepriv->assoc_req, offset);
_rtw_memcpy(pdup + offset, pmlmepriv->assoc_req + offset + ETH_ALEN,
pmlmepriv->assoc_req_len - offset);
rtw_buf_update(&pmlmepriv->assoc_req,
&pmlmepriv->assoc_req_len, pdup, dup_len);
rtw_mfree(pdup, dup_len);
}
}
#endif /* CONFIG_RTW_WNM */
#if defined(CONFIG_RTW_WNM) || defined(CONFIG_RTW_80211K)
void rtw_roam_nb_info_init(_adapter *padapter)
{
struct roam_nb_info *pnb = &(padapter->mlmepriv.nb_info);
struct btm_rpt_cache *pcache = &(pnb->btm_cache);
_rtw_memset(&pnb->nb_rpt, 0, sizeof(pnb->nb_rpt));
_rtw_memset(&pnb->nb_rpt_ch_list, 0, sizeof(pnb->nb_rpt_ch_list));
_rtw_memset(&pnb->roam_target_addr, 0, ETH_ALEN);
pnb->nb_rpt_valid = _FALSE;
pnb->nb_rpt_ch_list_num = 0;
pnb->preference_en = _FALSE;
pnb->nb_rpt_is_same = _TRUE;
pnb->last_nb_rpt_entries = 0;
pnb->disassoc_waiting = -1;
#ifdef CONFIG_RTW_WNM
pnb->features = 0;
/* pnb->features |= RTW_WNM_FEATURE_BTM_REQ_EN; */
#ifdef CONFIG_PLATFORM_CMAP_INTFS
pnb->features |= RTW_WNM_FEATURE_BTM_REQ_EN;
#endif
rtw_init_timer(&pnb->roam_scan_timer,
padapter, rtw_wnm_roam_scan_hdl,
padapter);
rtw_init_timer(&pnb->disassoc_chk_timer,
padapter, rtw_wnm_disassoc_chk_hdl,
padapter);
_rtw_memset(pcache, 0, sizeof(struct btm_rpt_cache));
pcache->validity_time = wnm_defualt_validity_time;
pcache->disassoc_time= wnm_default_disassoc_time ;
#endif
}
u8 rtw_roam_nb_scan_list_set(
_adapter *padapter, struct sitesurvey_parm *pparm)
{
u8 ret = _FALSE;
u32 i;
struct mlme_priv *pmlmepriv = &(padapter->mlmepriv);
struct roam_nb_info *pnb = &(pmlmepriv->nb_info);
#ifdef CONFIG_RTW_80211R
if (!rtw_chk_roam_flags(padapter, RTW_ROAM_ACTIVE)
&& !rtw_ft_chk_flags(padapter, RTW_FT_BTM_ROAM))
return ret;
#endif
if (!pmlmepriv->need_to_roam)
return ret;
if ((!pmlmepriv->nb_info.nb_rpt_valid) || (!pnb->nb_rpt_ch_list_num))
return ret;
if (!pparm)
return ret;
rtw_init_sitesurvey_parm(padapter, pparm);
if (rtw_roam_busy_scan(padapter, pnb)) {
pparm->ch_num = 1;
pparm->ch[pmlmepriv->ch_cnt].hw_value =
pnb->nb_rpt_ch_list[pmlmepriv->ch_cnt].hw_value;
pmlmepriv->ch_cnt++;
ret = _TRUE;
RTW_WNM_INFO("%s: ch_cnt=%u, (%u)hw_value=%u\n",
__func__, pparm->ch_num, pmlmepriv->ch_cnt,
pparm->ch[pmlmepriv->ch_cnt].hw_value);
if (pmlmepriv->ch_cnt == pnb->nb_rpt_ch_list_num) {
pmlmepriv->nb_info.nb_rpt_valid = _FALSE;
pmlmepriv->ch_cnt = 0;
}
goto set_bssid_list;
}
pparm->ch_num = (pnb->nb_rpt_ch_list_num > RTW_CHANNEL_SCAN_AMOUNT)?
(RTW_CHANNEL_SCAN_AMOUNT):(pnb->nb_rpt_ch_list_num);
for (i=0; i<pparm->ch_num; i++) {
pparm->ch[i].hw_value = pnb->nb_rpt_ch_list[i].hw_value;
pparm->ch[i].flags = RTW_IEEE80211_CHAN_PASSIVE_SCAN;
}
pmlmepriv->nb_info.nb_rpt_valid = _FALSE;
pmlmepriv->ch_cnt = 0;
ret = _TRUE;
set_bssid_list:
rtw_set_802_11_bssid_list_scan(padapter, pparm);
return ret;
}
static u8 rtw_wnm_nb_elem_parsing(
u8* pdata, u32 data_len, u8 from_btm,
u32 *nb_rpt_num, u8 *nb_rpt_is_same,
struct roam_nb_info *pnb, struct wnm_btm_cant *pcandidates)
{
u8 bfound = _FALSE, ret = _SUCCESS;
u8 *ptr, *pend, *op;
u32 elem_len, subelem_len, op_len;
u32 i, nb_rpt_entries = 0;
struct nb_rpt_hdr *pie;
struct wnm_btm_cant *pcandidate;
if ((!pdata) || (!pnb))
return _FAIL;
if ((from_btm) && (!pcandidates))
return _FAIL;
ptr = pdata;
pend = ptr + data_len;
elem_len = data_len;
subelem_len = (u32)*(pdata+1);
for (i=0; i < RTW_MAX_NB_RPT_NUM; i++) {
if (((ptr + 7) > pend) || (elem_len < subelem_len))
break;
if (*ptr != RTW_WLAN_ACTION_WNM_NB_RPT_ELEM) {
RTW_WNM_INFO("WNM: end of data(0x%2x)!\n", *ptr);
break;
}
pie = (struct nb_rpt_hdr *)ptr;
if (from_btm) {
op = rtw_get_ie((u8 *)(ptr+15),
WNM_BTM_CAND_PREF_SUBEID,
&op_len, (subelem_len - 15));
}
ptr = (u8 *)(ptr + subelem_len + 2);
elem_len -= (subelem_len +2);
subelem_len = *(ptr+1);
if (from_btm) {
pcandidate = (pcandidates + i);
_rtw_memcpy(&pcandidate->nb_rpt, pie, sizeof(struct nb_rpt_hdr));
if (op && (op_len !=0)) {
pcandidate->preference = *(op + 2);
bfound = _TRUE;
} else
pcandidate->preference = 0;
RTW_WNM_INFO("WNM: preference check bssid("MAC_FMT
") ,bss_info(0x%04X), reg_class(0x%02X), ch(%d),"
" phy_type(0x%02X), preference(0x%02X)\n",
MAC_ARG(pcandidate->nb_rpt.bssid), pcandidate->nb_rpt.bss_info,
pcandidate->nb_rpt.reg_class, pcandidate->nb_rpt.ch_num,
pcandidate->nb_rpt.phy_type, pcandidate->preference);
} else {
if (_rtw_memcmp(&pnb->nb_rpt[i], pie, sizeof(struct nb_rpt_hdr)) == _FALSE)
*nb_rpt_is_same = _FALSE;
_rtw_memcpy(&pnb->nb_rpt[i], pie, sizeof(struct nb_rpt_hdr));
}
nb_rpt_entries++;
}
if (from_btm)
pnb->preference_en = (bfound)?_TRUE:_FALSE;
*nb_rpt_num = nb_rpt_entries;
return ret;
}
/* selection sorting based on preference value
* IN : nb_rpt_entries - candidate num
* IN/OUT : pcandidates - candidate list
* return : TRUE - means pcandidates is updated.
*/
static u8 rtw_wnm_candidates_sorting(
u32 nb_rpt_entries, struct wnm_btm_cant *pcandidates)
{
u8 updated = _FALSE;
u32 i, j, pos;
struct wnm_btm_cant swap;
struct wnm_btm_cant *pcant_1, *pcant_2;
if ((!nb_rpt_entries) || (!pcandidates))
return updated;
for (i=0; i < (nb_rpt_entries - 1); i++) {
pos = i;
for (j=(i + 1); j < nb_rpt_entries; j++) {
pcant_1 = pcandidates+pos;
pcant_2 = pcandidates+j;
if ((pcant_1->preference) < (pcant_2->preference))
pos = j;
}
if (pos != i) {
updated = _TRUE;
_rtw_memcpy(&swap, (pcandidates+i), sizeof(struct wnm_btm_cant));
_rtw_memcpy((pcandidates+i), (pcandidates+pos), sizeof(struct wnm_btm_cant));
_rtw_memcpy((pcandidates+pos), &swap, sizeof(struct wnm_btm_cant));
}
}
return updated;
}
static void rtw_wnm_nb_info_update(
u32 nb_rpt_entries, u8 from_btm,
struct roam_nb_info *pnb, struct wnm_btm_cant *pcandidates,
u8 *nb_rpt_is_same)
{
u8 is_found;
u32 i, j;
struct wnm_btm_cant *pcand;
if (!pnb)
return;
pnb->nb_rpt_ch_list_num = 0;
for (i=0; i<nb_rpt_entries; i++) {
is_found = _FALSE;
if (from_btm) {
pcand = (pcandidates+i);
if (_rtw_memcmp(&pnb->nb_rpt[i], &pcand->nb_rpt,
sizeof(struct nb_rpt_hdr)) == _FALSE)
*nb_rpt_is_same = _FALSE;
_rtw_memcpy(&pnb->nb_rpt[i], &pcand->nb_rpt, sizeof(struct nb_rpt_hdr));
}
RTW_WNM_INFO("WNM: bssid(" MAC_FMT
") , bss_info(0x%04X), reg_class(0x%02X), ch_num(%d), phy_type(0x%02X)\n",
MAC_ARG(pnb->nb_rpt[i].bssid), pnb->nb_rpt[i].bss_info,
pnb->nb_rpt[i].reg_class, pnb->nb_rpt[i].ch_num,
pnb->nb_rpt[i].phy_type);
if (pnb->nb_rpt[i].ch_num == 0)
continue;
for (j=0; j<nb_rpt_entries; j++) {
if (pnb->nb_rpt[i].ch_num == pnb->nb_rpt_ch_list[j].hw_value) {
is_found = _TRUE;
break;
}
}
if (!is_found) {
pnb->nb_rpt_ch_list[pnb->nb_rpt_ch_list_num].hw_value = pnb->nb_rpt[i].ch_num;
pnb->nb_rpt_ch_list_num++;
}
}
}
static void rtw_wnm_btm_candidate_select(_adapter *padapter)
{
struct mlme_priv *pmlmepriv = &(padapter->mlmepriv);
struct roam_nb_info *pnb = &(padapter->mlmepriv.nb_info);
struct wlan_network *pnetwork;
u8 bfound = _FALSE;
u8 ignore_currrent = _FALSE;
u32 i;
#ifdef CONFIG_RTW_80211R
if (rtw_ft_chk_flags(padapter, RTW_FT_BTM_ROAM))
ignore_currrent = _TRUE;
#endif
for (i = 0; i < pnb->last_nb_rpt_entries; i++) {
if (ignore_currrent &&
(_rtw_memcmp(pnb->nb_rpt[i].bssid,\
padapter->mlmepriv.cur_network.network.MacAddress, ETH_ALEN))) {
RTW_WNM_INFO("WNM : ignore candidate "MAC_FMT" for it's connected(%u)!\n",
MAC_ARG(pnb->nb_rpt[i].bssid), i);
continue;
}
pnetwork = rtw_find_network(
&(pmlmepriv->scanned_queue),
pnb->nb_rpt[i].bssid);
if (pnetwork) {
bfound = _TRUE;
break;
}
}
if (bfound) {
_rtw_memcpy(pnb->roam_target_addr, pnb->nb_rpt[i].bssid, ETH_ALEN);
RTW_INFO("WNM : select btm entry(%d) - %s("MAC_FMT", ch:%u) rssi:%d\n"
, i
, pnetwork->network.Ssid.Ssid
, MAC_ARG(pnetwork->network.MacAddress)
, pnetwork->network.Configuration.DSConfig
, (int)pnetwork->network.Rssi);
} else
_rtw_memset(pnb->roam_target_addr,0, ETH_ALEN);
}
u32 rtw_wnm_btm_candidates_survey(
_adapter *padapter, u8* pframe, u32 elem_len, u8 from_btm)
{
struct roam_nb_info *pnb = &(padapter->mlmepriv.nb_info);
struct wnm_btm_cant *pcandidate_list = NULL;
u8 nb_rpt_is_same = _TRUE;
u32 ret = _FAIL;
u32 nb_rpt_entries = 0;
if (from_btm) {
u32 mlen = sizeof(struct wnm_btm_cant) * RTW_MAX_NB_RPT_NUM;
pcandidate_list = (struct wnm_btm_cant *)rtw_malloc(mlen);
if (pcandidate_list == NULL)
goto exit;
}
/*clean the status set last time*/
_rtw_memset(&pnb->nb_rpt_ch_list, 0, sizeof(pnb->nb_rpt_ch_list));
pnb->nb_rpt_valid = _FALSE;
if (!rtw_wnm_nb_elem_parsing(
pframe, elem_len, from_btm,
&nb_rpt_entries, &nb_rpt_is_same,
pnb, pcandidate_list))
goto exit;
if (nb_rpt_entries != 0) {
if ((from_btm) && (rtw_wnm_btm_preference_cap(padapter)))
rtw_wnm_candidates_sorting(nb_rpt_entries, pcandidate_list);
rtw_wnm_nb_info_update(
nb_rpt_entries, from_btm,
pnb, pcandidate_list, &nb_rpt_is_same);
}
RTW_WNM_INFO("nb_rpt_is_same = %d, nb_rpt_entries = %d, last_nb_rpt_entries = %d\n",
nb_rpt_is_same, nb_rpt_entries, pnb->last_nb_rpt_entries);
if ((nb_rpt_is_same == _TRUE) && (nb_rpt_entries == pnb->last_nb_rpt_entries))
pnb->nb_rpt_is_same = _TRUE;
else {
pnb->nb_rpt_is_same = _FALSE;
pnb->last_nb_rpt_entries = nb_rpt_entries;
}
if ((from_btm) && (nb_rpt_entries != 0))
rtw_wnm_btm_candidate_select(padapter);
pnb->nb_rpt_valid = _TRUE;
ret = _SUCCESS;
exit:
if (from_btm && pcandidate_list)
rtw_mfree((u8 *)pcandidate_list, sizeof(struct wnm_btm_cant) * RTW_MAX_NB_RPT_NUM);
return ret;
}
#endif /*defined(CONFIG_RTW_WNM) || defined(CONFIG_RTW_80211K) */
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