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staging: rtl8723au: rtw_check_bcn_info23a(): Use cfg80211_find_ie()

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Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jes Sorensen 2014-04-15 19:43:59 +02:00 committed by Greg Kroah-Hartman
parent c146551f1a
commit 3ffa4355a2
1 changed files with 62 additions and 55 deletions
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117
drivers/staging/rtl8723au/core/rtw_wlan_util.c
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@ -857,10 +857,8 @@ void VCS_update23a(struct rtw_adapter *padapter, struct sta_info *psta)
}
int rtw_check_bcn_info23a(struct rtw_adapter *Adapter,
struct ieee80211_mgmt *mgmt, u32 packet_len)
struct ieee80211_mgmt *mgmt, u32 pkt_len)
{
unsigned int len;
unsigned char *p;
unsigned short val16;
struct wlan_network *cur_network = &Adapter->mlmepriv.cur_network;
u16 wpa_len = 0, rsn_len = 0;
@ -875,6 +873,9 @@ int rtw_check_bcn_info23a(struct rtw_adapter *Adapter,
u32 bcn_channel;
unsigned short ht_cap_info;
unsigned char ht_info_infos_0;
int len, pie_len, ie_offset;
const u8 *p;
u8 *pie;
if (is_client_associated_to_ap23a(Adapter) == false)
return true;
@ -885,7 +886,7 @@ int rtw_check_bcn_info23a(struct rtw_adapter *Adapter,
return false;
}
len = packet_len - sizeof(struct ieee80211_hdr_3addr);
len = pkt_len - sizeof(struct ieee80211_hdr_3addr);
if (len > MAX_IE_SZ) {
DBG_8723A("%s IE too long for survey event\n", __func__);
@ -913,70 +914,76 @@ int rtw_check_bcn_info23a(struct rtw_adapter *Adapter,
/* check bw and channel offset */
/* parsing HT_CAP_IE */
p = rtw_get_ie23a(bssid->IEs + _FIXED_IE_LENGTH_,
WLAN_EID_HT_CAPABILITY,
&len, bssid->IELength - _FIXED_IE_LENGTH_);
if (p && len>0) {
pht_cap = (struct ieee80211_ht_cap *)(p + 2);
ht_cap_info = pht_cap->cap_info;
} else {
ht_cap_info = 0;
}
ie_offset = offsetof(struct ieee80211_mgmt, u.beacon.variable) -
offsetof(struct ieee80211_mgmt, u);
pie = bssid->IEs + ie_offset;
pie_len = pkt_len - ie_offset;
p = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, pie, pie_len);
if (p && p[1] > 0) {
pht_cap = (struct ieee80211_ht_cap *)(p + 2);
ht_cap_info = pht_cap->cap_info;
} else
ht_cap_info = 0;
/* parsing HT_INFO_IE */
p = rtw_get_ie23a(bssid->IEs + _FIXED_IE_LENGTH_, WLAN_EID_HT_OPERATION,
&len, bssid->IELength - _FIXED_IE_LENGTH_);
if (p && len>0) {
pht_info = (struct HT_info_element *)(p + 2);
ht_info_infos_0 = pht_info->infos[0];
} else {
ht_info_infos_0 = 0;
}
p = cfg80211_find_ie(WLAN_EID_HT_OPERATION, pie, pie_len);
if (p && p[1] > 0) {
pht_info = (struct HT_info_element *)(p + 2);
ht_info_infos_0 = pht_info->infos[0];
} else
ht_info_infos_0 = 0;
if (ht_cap_info != cur_network->BcnInfo.ht_cap_info ||
((ht_info_infos_0&0x03) != (cur_network->BcnInfo.ht_info_infos_0&0x03))) {
DBG_8723A("%s bcn now: ht_cap_info:%x ht_info_infos_0:%x\n", __func__,
ht_cap_info, ht_info_infos_0);
DBG_8723A("%s bcn link: ht_cap_info:%x ht_info_infos_0:%x\n", __func__,
cur_network->BcnInfo.ht_cap_info, cur_network->BcnInfo.ht_info_infos_0);
DBG_8723A("%s bw mode change, disconnect\n", __func__);
/* bcn_info_update */
cur_network->BcnInfo.ht_cap_info = ht_cap_info;
cur_network->BcnInfo.ht_info_infos_0 = ht_info_infos_0;
/* to do : need to check that whether modify related register of BB or not */
((ht_info_infos_0 & 0x03) !=
(cur_network->BcnInfo.ht_info_infos_0 & 0x03))) {
DBG_8723A("%s bcn now: ht_cap_info:%x ht_info_infos_0:%x\n",
__func__, ht_cap_info, ht_info_infos_0);
DBG_8723A("%s bcn link: ht_cap_info:%x ht_info_infos_0:%x\n",
__func__, cur_network->BcnInfo.ht_cap_info,
cur_network->BcnInfo.ht_info_infos_0);
DBG_8723A("%s bw mode change, disconnect\n", __func__);
/* bcn_info_update */
cur_network->BcnInfo.ht_cap_info = ht_cap_info;
cur_network->BcnInfo.ht_info_infos_0 = ht_info_infos_0;
/* to do : need to check that whether modify related
register of BB or not */
}
/* Checking for channel */
p = rtw_get_ie23a(bssid->IEs + _FIXED_IE_LENGTH_, WLAN_EID_DS_PARAMS,
&len, bssid->IELength - _FIXED_IE_LENGTH_);
if (p) {
bcn_channel = *(p + 2);
} else {/* In 5G, some ap do not have DSSET IE checking HT info for channel */
p = rtw_get_ie23a(bssid->IEs + _FIXED_IE_LENGTH_,
WLAN_EID_HT_OPERATION, &len,
bssid->IELength - _FIXED_IE_LENGTH_);
if (pht_info) {
bcn_channel = pht_info->primary_channel;
} else { /* we don't find channel IE, so don't check it */
DBG_8723A("Oops: %s we don't find channel IE, so don't check it\n", __func__);
bcn_channel = Adapter->mlmeextpriv.cur_channel;
}
p = cfg80211_find_ie(WLAN_EID_DS_PARAMS, pie, pie_len);
if (p)
bcn_channel = p[2];
else {
/* In 5G, some ap do not have DSSET IE checking HT
info for channel */
p = cfg80211_find_ie(WLAN_EID_HT_OPERATION, pie, pie_len);
if (pht_info)
bcn_channel = pht_info->primary_channel;
else { /* we don't find channel IE, so don't check it */
DBG_8723A("Oops: %s we don't find channel IE, so don't "
"check it\n", __func__);
bcn_channel = Adapter->mlmeextpriv.cur_channel;
}
}
if (bcn_channel != Adapter->mlmeextpriv.cur_channel) {
DBG_8723A("%s beacon channel:%d cur channel:%d disconnect\n", __func__,
bcn_channel, Adapter->mlmeextpriv.cur_channel);
goto _mismatch;
DBG_8723A("%s beacon channel:%d cur channel:%d disconnect\n",
__func__, bcn_channel,
Adapter->mlmeextpriv.cur_channel);
goto _mismatch;
}
/* checking SSID */
if ((p = rtw_get_ie23a(bssid->IEs + _FIXED_IE_LENGTH_, WLAN_EID_SSID,
&len, bssid->IELength - _FIXED_IE_LENGTH_)) ==
NULL) {
DBG_8723A("%s marc: cannot find SSID for survey event\n", __func__);
p = cfg80211_find_ie(WLAN_EID_SSID, pie, pie_len);
if (!p) {
DBG_8723A("%s marc: cannot find SSID for survey event\n",
__func__);
hidden_ssid = true;
} else {
} else
hidden_ssid = false;
}
if ((NULL != p) && (false == hidden_ssid && (*(p + 1)))) {
if (p && (hidden_ssid == false && *(p + 1))) {
memcpy(bssid->Ssid.ssid, (p + 2), *(p + 1));
bssid->Ssid.ssid_len = *(p + 1);
} else {