/*
========================================================================
Routine Description:
Build cipher suite in RSN-IE.
It only shall be called by RTMPMakeRSNIE.
Arguments:
pAd - pointer to our pAdapter context
ElementID - indicate the WPA1 or WPA2
WepStatus - indicate the encryption type
bMixCipher - a boolean to indicate the pairwise cipher and group
cipher are the same or not
Return Value:
Note:
========================================================================
*/
static VOID RTMPInsertRsnIeCipher(
IN PRTMP_ADAPTER pAd,
IN UCHAR ElementID,
IN UINT WepStatus,
IN BOOLEAN bMixCipher,
IN UCHAR FlexibleCipher,
OUT PUCHAR pRsnIe,
OUT UCHAR *rsn_len)
{
UCHAR PairwiseCnt;
*rsn_len = 0;
// decide WPA2 or WPA1
if (ElementID == Wpa2Ie)
{
RSNIE2 *pRsnie_cipher = (RSNIE2*)pRsnIe;
// Assign the verson as 1
pRsnie_cipher->version = 1;
switch (WepStatus)
{
// TKIP mode
case Ndis802_11Encryption2Enabled:
NdisMoveMemory(pRsnie_cipher->mcast, OUI_WPA2_TKIP, 4);
pRsnie_cipher->ucount = 1;
NdisMoveMemory(pRsnie_cipher->ucast[0].oui, OUI_WPA2_TKIP, 4);
*rsn_len = sizeof(RSNIE2);
break;
// AES mode
case Ndis802_11Encryption3Enabled:
if (bMixCipher)
NdisMoveMemory(pRsnie_cipher->mcast, OUI_WPA2_TKIP, 4);
else
NdisMoveMemory(pRsnie_cipher->mcast, OUI_WPA2_CCMP, 4);
pRsnie_cipher->ucount = 1;
NdisMoveMemory(pRsnie_cipher->ucast[0].oui, OUI_WPA2_CCMP, 4);
*rsn_len = sizeof(RSNIE2);
break;
// TKIP-AES mix mode
case Ndis802_11Encryption4Enabled:
NdisMoveMemory(pRsnie_cipher->mcast, OUI_WPA2_TKIP, 4);
PairwiseCnt = 1;
// Insert WPA2 TKIP as the first pairwise cipher
if (MIX_CIPHER_WPA2_TKIP_ON(FlexibleCipher))
{
NdisMoveMemory(pRsnie_cipher->ucast[0].oui, OUI_WPA2_TKIP, 4);
// Insert WPA2 AES as the secondary pairwise cipher
if (MIX_CIPHER_WPA2_AES_ON(FlexibleCipher))
{
NdisMoveMemory(pRsnie_cipher->ucast[0].oui + 4, OUI_WPA2_CCMP, 4);
PairwiseCnt = 2;
}
}
else
{
// Insert WPA2 AES as the first pairwise cipher
NdisMoveMemory(pRsnie_cipher->ucast[0].oui, OUI_WPA2_CCMP, 4);
}
pRsnie_cipher->ucount = PairwiseCnt;
*rsn_len = sizeof(RSNIE2) + (4 * (PairwiseCnt - 1));
break;
}
// swap for big-endian platform
pRsnie_cipher->version = cpu2le16(pRsnie_cipher->version);
pRsnie_cipher->ucount = cpu2le16(pRsnie_cipher->ucount);
}
else
{
RSNIE *pRsnie_cipher = (RSNIE*)pRsnIe;
// Assign OUI and version
NdisMoveMemory(pRsnie_cipher->oui, OUI_WPA_VERSION, 4);
pRsnie_cipher->version = 1;
switch (WepStatus)
{
// TKIP mode
case Ndis802_11Encryption2Enabled:
NdisMoveMemory(pRsnie_cipher->mcast, OUI_WPA_TKIP, 4);
pRsnie_cipher->ucount = 1;
NdisMoveMemory(pRsnie_cipher->ucast[0].oui, OUI_WPA_TKIP, 4);
*rsn_len = sizeof(RSNIE);
break;
// AES mode
case Ndis802_11Encryption3Enabled:
if (bMixCipher)
NdisMoveMemory(pRsnie_cipher->mcast, OUI_WPA_TKIP, 4);
else
NdisMoveMemory(pRsnie_cipher->mcast, OUI_WPA_CCMP, 4);
pRsnie_cipher->ucount = 1;
NdisMoveMemory(pRsnie_cipher->ucast[0].oui, OUI_WPA_CCMP, 4);
*rsn_len = sizeof(RSNIE);
break;
// TKIP-AES mix mode
case Ndis802_11Encryption4Enabled:
NdisMoveMemory(pRsnie_cipher->mcast, OUI_WPA_TKIP, 4);
PairwiseCnt = 1;
// Insert WPA TKIP as the first pairwise cipher
if (MIX_CIPHER_WPA_TKIP_ON(FlexibleCipher))
{
NdisMoveMemory(pRsnie_cipher->ucast[0].oui, OUI_WPA_TKIP, 4);
// Insert WPA AES as the secondary pairwise cipher
if (MIX_CIPHER_WPA_AES_ON(FlexibleCipher))
{
NdisMoveMemory(pRsnie_cipher->ucast[0].oui + 4, OUI_WPA_CCMP, 4);
PairwiseCnt = 2;
}
}
else
{
// Insert WPA AES as the first pairwise cipher
NdisMoveMemory(pRsnie_cipher->ucast[0].oui, OUI_WPA_CCMP, 4);
}
pRsnie_cipher->ucount = PairwiseCnt;
*rsn_len = sizeof(RSNIE) + (4 * (PairwiseCnt - 1));
break;
}
// swap for big-endian platform
pRsnie_cipher->version = cpu2le16(pRsnie_cipher->version);
pRsnie_cipher->ucount = cpu2le16(pRsnie_cipher->ucount);
}
}
/*
==========================================================================
Description:
Check sanity of unicast cipher selector in RSN IE.
Return:
true if match
false otherwise
==========================================================================
*/
bool RTMPCheckUcast(
IN struct rtmp_adapter * pAd,
IN PEID_STRUCT eid_ptr,
IN MAC_TABLE_ENTRY *pEntry)
{
u8 * pStaTmp;
unsigned short Count;
u8 apidx;
struct rtmp_wifi_dev *wdev;
ASSERT(pEntry);
ASSERT(pEntry->apidx < pAd->ApCfg.BssidNum);
apidx = pEntry->apidx;
wdev = &pAd->ApCfg.MBSSID[apidx].wdev;
pEntry->WepStatus = wdev->WepStatus;
if (eid_ptr->Len < 16)
{
DBGPRINT(RT_DEBUG_ERROR, ("[ERROR]RTMPCheckUcast : the length is too short(%d) \n", eid_ptr->Len));
return false;
}
/* Store STA RSN_IE capability */
pStaTmp = (u8 *)&eid_ptr->Octet[0];
if(eid_ptr->Eid == IE_WPA2)
{
/* skip Version(2),Multicast cipter(4) 2+4==6 */
/* point to number of unicast */
pStaTmp +=6;
}
else if (eid_ptr->Eid == IE_WPA)
{
/* skip OUI(4),Vesrion(2),Multicast cipher(4) 4+2+4==10 */
/* point to number of unicast */
pStaTmp += 10;
}
else
{
DBGPRINT(RT_DEBUG_ERROR, ("[ERROR]RTMPCheckUcast : invalid IE=%d\n", eid_ptr->Eid));
return false;
}
/* Store unicast cipher count */
memmove(&Count, pStaTmp, sizeof(unsigned short));
Count = cpu2le16(Count);
/* pointer to unicast cipher */
pStaTmp += sizeof(unsigned short);
if (eid_ptr->Len >= 16)
{
if (eid_ptr->Eid == IE_WPA)
{
if (wdev->WepStatus == Ndis802_11TKIPAESMix)
{/* multiple cipher (TKIP/CCMP) */
while (Count > 0)
{
/* TKIP */
if (MIX_CIPHER_WPA_TKIP_ON(wdev->WpaMixPairCipher))
{
/* Compare if peer STA uses the TKIP as its unicast cipher */
if (RTMPEqualMemory(pStaTmp, &pAd->ApCfg.MBSSID[apidx].RSN_IE[0][12], 4))
{
pEntry->WepStatus = Ndis802_11TKIPEnable;
return true;
}
/* Our AP uses the AES as the secondary cipher */
/* Compare if the peer STA use AES as its unicast cipher */
if (MIX_CIPHER_WPA_AES_ON(wdev->WpaMixPairCipher))
{
if (RTMPEqualMemory(pStaTmp, &pAd->ApCfg.MBSSID[apidx].RSN_IE[0][16], 4))
{
pEntry->WepStatus = Ndis802_11AESEnable;
return true;
}
}
}
else
{
/* AES */
if (RTMPEqualMemory(pStaTmp, &pAd->ApCfg.MBSSID[apidx].RSN_IE[0][12], 4))
{
pEntry->WepStatus = Ndis802_11AESEnable;
return true;
}
}
pStaTmp += 4;
Count--;
}
}
else
{/* single cipher */
while (Count > 0)
{
if (RTMPEqualMemory(pStaTmp , &pAd->ApCfg.MBSSID[apidx].RSN_IE[0][12], 4))
return true;
pStaTmp += 4;
Count--;
}
}
}
else if (eid_ptr->Eid == IE_WPA2)
{
u8 IE_Idx = 0;
/* When WPA1/WPA2 mix mode, the RSN_IE is stored in different structure */
if ((wdev->AuthMode == Ndis802_11AuthModeWPA1WPA2) || (wdev->AuthMode == Ndis802_11AuthModeWPA1PSKWPA2PSK))
IE_Idx = 1;
if (wdev->WepStatus == Ndis802_11TKIPAESMix)
{/* multiple cipher (TKIP/CCMP) */
while (Count > 0)
{
/* WPA2 TKIP */
if (MIX_CIPHER_WPA2_TKIP_ON(wdev->WpaMixPairCipher))
{
/* Compare if peer STA uses the TKIP as its unicast cipher */
if (RTMPEqualMemory(pStaTmp, &pAd->ApCfg.MBSSID[apidx].RSN_IE[IE_Idx][8], 4))
{
pEntry->WepStatus = Ndis802_11TKIPEnable;
return true;
}
/* Our AP uses the AES as the secondary cipher */
/* Compare if the peer STA use AES as its unicast cipher */
if (MIX_CIPHER_WPA2_AES_ON(wdev->WpaMixPairCipher))
{
if (RTMPEqualMemory(pStaTmp, &pAd->ApCfg.MBSSID[apidx].RSN_IE[IE_Idx][12], 4))
{
pEntry->WepStatus = Ndis802_11AESEnable;
return true;
}
}
}
else
{
/* AES */
if (RTMPEqualMemory(pStaTmp, &pAd->ApCfg.MBSSID[apidx].RSN_IE[IE_Idx][8], 4))
{
pEntry->WepStatus = Ndis802_11AESEnable;
return true;
}
}
pStaTmp += 4;
Count--;
}
}
else
{/* single cipher */
while (Count > 0)
{
if (RTMPEqualMemory(pStaTmp, &pAd->ApCfg.MBSSID[apidx].RSN_IE[IE_Idx][8], 4))
return true;
pStaTmp += 4;
Count--;
}
}
}
}
return false;
}
/*
==========================================================================
Description:
Check sanity of unicast cipher selector in RSN IE.
Return:
TRUE if match
FALSE otherwise
==========================================================================
*/
BOOLEAN RTMPCheckUcast(
IN PRTMP_ADAPTER pAd,
IN PEID_STRUCT eid_ptr,
IN MAC_TABLE_ENTRY *pEntry)
{
PUCHAR pStaTmp;
USHORT Count;
UCHAR apidx;
ASSERT(pEntry);
ASSERT(pEntry->apidx < pAd->ApCfg.BssidNum);
apidx = pEntry->apidx;
pEntry->WepStatus = pAd->ApCfg.MBSSID[apidx].WepStatus;
if (eid_ptr->Len < 16)
{
DBGPRINT(RT_DEBUG_ERROR, ("[ERROR]RTMPCheckUcast : the length is too short(%d) \n", eid_ptr->Len));
return FALSE;
}
/* Store STA RSN_IE capability */
pStaTmp = (PUCHAR)&eid_ptr->Octet[0];
if(eid_ptr->Eid == IE_WPA2)
{
/* skip Version(2),Multicast cipter(4) 2+4==6 */
/* point to number of unicast */
pStaTmp +=6;
}
else if (eid_ptr->Eid == IE_WPA)
{
/* skip OUI(4),Vesrion(2),Multicast cipher(4) 4+2+4==10 */
/* point to number of unicast */
pStaTmp += 10;
}
else
{
DBGPRINT(RT_DEBUG_ERROR, ("[ERROR]RTMPCheckUcast : invalid IE=%d\n", eid_ptr->Eid));
return FALSE;
}
/* Store unicast cipher count */
NdisMoveMemory(&Count, pStaTmp, sizeof(USHORT));
Count = cpu2le16(Count);
/* pointer to unicast cipher */
pStaTmp += sizeof(USHORT);
if (eid_ptr->Len >= 16)
{
if (eid_ptr->Eid == IE_WPA)
{
if (pAd->ApCfg.MBSSID[apidx].WepStatus == Ndis802_11Encryption4Enabled)
{/* multiple cipher (TKIP/CCMP) */
while (Count > 0)
{
/* TKIP */
if (MIX_CIPHER_WPA_TKIP_ON(pAd->ApCfg.MBSSID[apidx].WpaMixPairCipher))
{
/* Compare if peer STA uses the TKIP as its unicast cipher */
if (RTMPEqualMemory(pStaTmp, &pAd->ApCfg.MBSSID[apidx].RSN_IE[0][12], 4))
{
pEntry->WepStatus = Ndis802_11Encryption2Enabled;
return TRUE;
}
/* Our AP uses the AES as the secondary cipher */
/* Compare if the peer STA use AES as its unicast cipher */
if (MIX_CIPHER_WPA_AES_ON(pAd->ApCfg.MBSSID[apidx].WpaMixPairCipher))
{
if (RTMPEqualMemory(pStaTmp, &pAd->ApCfg.MBSSID[apidx].RSN_IE[0][16], 4))
{
pEntry->WepStatus = Ndis802_11Encryption3Enabled;
return TRUE;
}
}
}
else
{
/* AES */
if (RTMPEqualMemory(pStaTmp, &pAd->ApCfg.MBSSID[apidx].RSN_IE[0][12], 4))
{
pEntry->WepStatus = Ndis802_11Encryption3Enabled;
return TRUE;
}
}
pStaTmp += 4;
Count--;
}
}
else
{/* single cipher */
while (Count > 0)
{
if (RTMPEqualMemory(pStaTmp , &pAd->ApCfg.MBSSID[apidx].RSN_IE[0][12], 4))
return TRUE;
pStaTmp += 4;
Count--;
}
}
}
else if (eid_ptr->Eid == IE_WPA2)
{
UCHAR IE_Idx = 0;
/* When WPA1/WPA2 mix mode, the RSN_IE is stored in different structure */
if ((pAd->ApCfg.MBSSID[apidx].AuthMode == Ndis802_11AuthModeWPA1WPA2) || (pAd->ApCfg.MBSSID[apidx].AuthMode == Ndis802_11AuthModeWPA1PSKWPA2PSK))
IE_Idx = 1;
if (pAd->ApCfg.MBSSID[apidx].WepStatus == Ndis802_11Encryption4Enabled)
{/* multiple cipher (TKIP/CCMP) */
while (Count > 0)
{
/* WPA2 TKIP */
if (MIX_CIPHER_WPA2_TKIP_ON(pAd->ApCfg.MBSSID[apidx].WpaMixPairCipher))
{
/* Compare if peer STA uses the TKIP as its unicast cipher */
if (RTMPEqualMemory(pStaTmp, &pAd->ApCfg.MBSSID[apidx].RSN_IE[IE_Idx][8], 4))
{
pEntry->WepStatus = Ndis802_11Encryption2Enabled;
return TRUE;
}
/* Our AP uses the AES as the secondary cipher */
/* Compare if the peer STA use AES as its unicast cipher */
if (MIX_CIPHER_WPA2_AES_ON(pAd->ApCfg.MBSSID[apidx].WpaMixPairCipher))
{
if (RTMPEqualMemory(pStaTmp, &pAd->ApCfg.MBSSID[apidx].RSN_IE[IE_Idx][12], 4))
{
pEntry->WepStatus = Ndis802_11Encryption3Enabled;
return TRUE;
}
}
}
else
{
/* AES */
if (RTMPEqualMemory(pStaTmp, &pAd->ApCfg.MBSSID[apidx].RSN_IE[IE_Idx][8], 4))
{
pEntry->WepStatus = Ndis802_11Encryption3Enabled;
return TRUE;
}
}
pStaTmp += 4;
Count--;
}
}
else
{/* single cipher */
while (Count > 0)
{
if (RTMPEqualMemory(pStaTmp, &pAd->ApCfg.MBSSID[apidx].RSN_IE[IE_Idx][8], 4))
return TRUE;
pStaTmp += 4;
Count--;
}
}
}
}
return FALSE;
}
