VOID WPARetryExec(
IN PVOID SystemSpecific1,
IN PVOID FunctionContext,
IN PVOID SystemSpecific2,
IN PVOID SystemSpecific3)
{
MAC_TABLE_ENTRY *pEntry = (MAC_TABLE_ENTRY *)FunctionContext;
if ((pEntry) && IS_ENTRY_CLIENT(pEntry))
{
struct rtmp_adapter *pAd = (struct rtmp_adapter *)pEntry->pAd;
pEntry->ReTryCounter++;
DBGPRINT(RT_DEBUG_TRACE, ("WPARetryExec---> ReTryCounter=%d, WpaState=%d \n", pEntry->ReTryCounter, pEntry->WpaState));
switch (pEntry->AuthMode)
{
case Ndis802_11AuthModeWPA:
case Ndis802_11AuthModeWPAPSK:
case Ndis802_11AuthModeWPA2:
case Ndis802_11AuthModeWPA2PSK:
/* 1. GTK already retried, give up and disconnect client. */
if (pEntry->ReTryCounter > (GROUP_MSG1_RETRY_TIMER_CTR + 1))
{
/* send wireless event - for group key handshaking timeout */
RTMPSendWirelessEvent(pAd, IW_GROUP_HS_TIMEOUT_EVENT_FLAG, pEntry->Addr, pEntry->apidx, 0);
DBGPRINT(RT_DEBUG_TRACE, ("WPARetryExec::Group Key HS exceed retry count, Disassociate client, pEntry->ReTryCounter %d\n", pEntry->ReTryCounter));
MlmeDeAuthAction(pAd, pEntry, REASON_GROUP_KEY_HS_TIMEOUT, false);
}
/* 2. Retry GTK. */
else if (pEntry->ReTryCounter > GROUP_MSG1_RETRY_TIMER_CTR)
{
DBGPRINT(RT_DEBUG_TRACE, ("WPARetryExec::ReTry 2-way group-key Handshake \n"));
if (pEntry->GTKState == REKEY_NEGOTIATING)
{
WPAStart2WayGroupHS(pAd, pEntry);
RTMPSetTimer(&pEntry->RetryTimer, PEER_MSG3_RETRY_EXEC_INTV);
}
}
/* 3. 4-way message 1 retried more than three times. Disconnect client */
else if (pEntry->ReTryCounter > (PEER_MSG1_RETRY_TIMER_CTR + 3))
{
/* send wireless event - for pairwise key handshaking timeout */
RTMPSendWirelessEvent(pAd, IW_PAIRWISE_HS_TIMEOUT_EVENT_FLAG, pEntry->Addr, pEntry->apidx, 0);
DBGPRINT(RT_DEBUG_TRACE, ("WPARetryExec::MSG1 timeout, pEntry->ReTryCounter = %d\n", pEntry->ReTryCounter));
MlmeDeAuthAction(pAd, pEntry, REASON_4_WAY_TIMEOUT, false);
}
/* 4. Retry 4 way message 1, the last try, the timeout is 3 sec for EAPOL-Start */
else if (pEntry->ReTryCounter == (PEER_MSG1_RETRY_TIMER_CTR + 3))
{
DBGPRINT(RT_DEBUG_TRACE, ("WPARetryExec::Retry MSG1, the last try\n"));
WPAStart4WayHS(pAd , pEntry, PEER_MSG3_RETRY_EXEC_INTV);
}
/* 4. Retry 4 way message 1 */
else if (pEntry->ReTryCounter < (PEER_MSG1_RETRY_TIMER_CTR + 3))
{
if ((pEntry->WpaState == AS_PTKSTART) || (pEntry->WpaState == AS_INITPSK) || (pEntry->WpaState == AS_INITPMK))
{
DBGPRINT(RT_DEBUG_TRACE, ("WPARetryExec::ReTry MSG1 of 4-way Handshake\n"));
WPAStart4WayHS(pAd, pEntry, PEER_MSG1_RETRY_EXEC_INTV);
}
}
break;
default:
break;
}
}
}
/*
==========================================================================
Description:
Timer execution function for periodically updating group key.
Return:
==========================================================================
*/
VOID GREKEYPeriodicExec(
IN PVOID SystemSpecific1,
IN PVOID FunctionContext,
IN PVOID SystemSpecific2,
IN PVOID SystemSpecific3)
{
UINT i, apidx;
ULONG temp_counter = 0;
struct rtmp_adapter *pAd = (struct rtmp_adapter *)FunctionContext;
PRALINK_TIMER_STRUCT pTimer = (PRALINK_TIMER_STRUCT) SystemSpecific3;
MULTISSID_STRUCT *pMbss = NULL;
struct rtmp_wifi_dev *wdev;
for (apidx=0; apidx<pAd->ApCfg.BssidNum; apidx++)
{
if (&pAd->ApCfg.MBSSID[apidx].REKEYTimer == pTimer)
break;
}
if (apidx == pAd->ApCfg.BssidNum)
return;
else
pMbss = &pAd->ApCfg.MBSSID[apidx];
wdev = &pMbss->wdev;
if (wdev->AuthMode < Ndis802_11AuthModeWPA ||
wdev->AuthMode > Ndis802_11AuthModeWPA1PSKWPA2PSK)
return;
if ((pMbss->WPAREKEY.ReKeyMethod == TIME_REKEY) && (pMbss->REKEYCOUNTER < 0xffffffff))
temp_counter = (++pMbss->REKEYCOUNTER);
/* REKEYCOUNTER is incremented every MCAST packets transmitted, */
/* But the unit of Rekeyinterval is 1K packets */
else if (pMbss->WPAREKEY.ReKeyMethod == PKT_REKEY)
temp_counter = pMbss->REKEYCOUNTER/1000;
else
{
return;
}
if (temp_counter > (pMbss->WPAREKEY.ReKeyInterval))
{
pMbss->REKEYCOUNTER = 0;
pMbss->RekeyCountDown = 3;
DBGPRINT(RT_DEBUG_TRACE, ("Rekey Interval Excess, GKeyDoneStations=%d\n", pMbss->StaCount));
/* take turn updating different groupkey index, */
if ((pMbss->StaCount) > 0)
{
/* change key index */
wdev->DefaultKeyId = (wdev->DefaultKeyId == 1) ? 2 : 1;
/* Generate GNonce randomly */
GenRandom(pAd, wdev->bssid, pMbss->GNonce);
/* Update GTK */
WpaDeriveGTK(pMbss->GMK,
(u8 *)pMbss->GNonce,
wdev->bssid, pMbss->GTK, LEN_TKIP_GTK);
/* Process 2-way handshaking */
for (i = 0; i < MAX_LEN_OF_MAC_TABLE; i++)
{
MAC_TABLE_ENTRY *pEntry;
pEntry = &pAd->MacTab.Content[i];
if (IS_ENTRY_CLIENT(pEntry) &&
(pEntry->WpaState == AS_PTKINITDONE) &&
(pEntry->apidx == apidx))
{
pEntry->GTKState = REKEY_NEGOTIATING;
#ifdef DROP_MASK_SUPPORT
/* Disable Drop Mask */
set_drop_mask_per_client(pAd, pEntry, 1, 0);
set_drop_mask_per_client(pAd, pEntry, 2, 0);
#endif /* DROP_MASK_SUPPORT */
WPAStart2WayGroupHS(pAd, pEntry);
DBGPRINT(RT_DEBUG_TRACE, ("Rekey interval excess, Update Group Key for %x %x %x %x %x %x , DefaultKeyId= %x \n",\
PRINT_MAC(pEntry->Addr), wdev->DefaultKeyId));
}
}
}
}
/* Use countdown to ensure the 2-way handshaking had completed */
if (pMbss->RekeyCountDown > 0)
{
pMbss->RekeyCountDown--;
if (pMbss->RekeyCountDown == 0)
{
unsigned short Wcid;
/* Get a specific WCID to record this MBSS key attribute */
GET_GroupKey_WCID(pAd, Wcid, apidx);
/* Install shared key table */
WPAInstallSharedKey(pAd,
wdev->GroupKeyWepStatus,
apidx,
wdev->DefaultKeyId,
Wcid,
true,
pMbss->GTK,
LEN_TKIP_GTK);
}
}
}
VOID WPARetryExec(
IN PVOID SystemSpecific1,
IN PVOID FunctionContext,
IN PVOID SystemSpecific2,
IN PVOID SystemSpecific3)
{
MAC_TABLE_ENTRY *pEntry = (MAC_TABLE_ENTRY *)FunctionContext;
if ((pEntry) && IS_ENTRY_CLIENT(pEntry))
{
PRTMP_ADAPTER pAd = (PRTMP_ADAPTER)pEntry->pAd;
pEntry->ReTryCounter++;
DBGPRINT(RT_DEBUG_TRACE, ("WPARetryExec---> ReTryCounter=%d, WpaState=%d \n", pEntry->ReTryCounter, pEntry->WpaState));
switch (pEntry->AuthMode)
{
case Ndis802_11AuthModeWPA:
case Ndis802_11AuthModeWPAPSK:
case Ndis802_11AuthModeWPA2:
case Ndis802_11AuthModeWPA2PSK:
/* 1. GTK already retried, give up and disconnect client. */
if (pEntry->ReTryCounter > (GROUP_MSG1_RETRY_TIMER_CTR + 1))
{
/* send wireless event - for group key handshaking timeout */
RTMPSendWirelessEvent(pAd, IW_GROUP_HS_TIMEOUT_EVENT_FLAG, pEntry->Addr, pEntry->apidx, 0);
DBGPRINT(RT_DEBUG_TRACE, ("WPARetryExec::Group Key HS exceed retry count, Disassociate client, pEntry->ReTryCounter %d\n", pEntry->ReTryCounter));
MlmeDeAuthAction(pAd, pEntry, REASON_GROUP_KEY_HS_TIMEOUT, FALSE);
}
/* 2. Retry GTK. */
else if (pEntry->ReTryCounter > GROUP_MSG1_RETRY_TIMER_CTR)
{
DBGPRINT(RT_DEBUG_TRACE, ("WPARetryExec::ReTry 2-way group-key Handshake \n"));
if (pEntry->GTKState == REKEY_NEGOTIATING)
{
WPAStart2WayGroupHS(pAd, pEntry);
RTMPSetTimer(&pEntry->RetryTimer, PEER_MSG3_RETRY_EXEC_INTV);
}
}
/* 3. 4-way message 1 retried more than three times. Disconnect client */
else if (pEntry->ReTryCounter > (PEER_MSG1_RETRY_TIMER_CTR + 3))
{
/* send wireless event - for pairwise key handshaking timeout */
RTMPSendWirelessEvent(pAd, IW_PAIRWISE_HS_TIMEOUT_EVENT_FLAG, pEntry->Addr, pEntry->apidx, 0);
DBGPRINT(RT_DEBUG_TRACE, ("WPARetryExec::MSG1 timeout, pEntry->ReTryCounter = %d\n", pEntry->ReTryCounter));
MlmeDeAuthAction(pAd, pEntry, REASON_4_WAY_TIMEOUT, FALSE);
}
/* 4. Retry 4 way message 1, the last try, the timeout is 3 sec for EAPOL-Start */
else if (pEntry->ReTryCounter == (PEER_MSG1_RETRY_TIMER_CTR + 3))
{
DBGPRINT(RT_DEBUG_TRACE, ("WPARetryExec::Retry MSG1, the last try\n"));
WPAStart4WayHS(pAd , pEntry, PEER_MSG3_RETRY_EXEC_INTV);
}
/* 4. Retry 4 way message 1 */
else if (pEntry->ReTryCounter < (PEER_MSG1_RETRY_TIMER_CTR + 3))
{
if ((pEntry->WpaState == AS_PTKSTART) || (pEntry->WpaState == AS_INITPSK) || (pEntry->WpaState == AS_INITPMK))
{
DBGPRINT(RT_DEBUG_TRACE, ("WPARetryExec::ReTry MSG1 of 4-way Handshake\n"));
WPAStart4WayHS(pAd, pEntry, PEER_MSG1_RETRY_EXEC_INTV);
}
}
break;
default:
break;
}
}
#ifdef APCLI_SUPPORT
else if ((pEntry) && IS_ENTRY_APCLI(pEntry))
{
if (pEntry->AuthMode == Ndis802_11AuthModeWPA || pEntry->AuthMode == Ndis802_11AuthModeWPAPSK)
{
PRTMP_ADAPTER pAd = (PRTMP_ADAPTER)pEntry->pAd;
if (pEntry->wdev_idx < MAX_APCLI_NUM)
{
UCHAR ifIndex = pEntry->wdev_idx;
DBGPRINT(RT_DEBUG_TRACE, ("(%s) ApCli interface[%d] startdown.\n", __FUNCTION__, ifIndex));
#ifdef MAC_REPEATER_SUPPORT
if ((pEntry->bReptCli) && (pAd->ApCfg.bMACRepeaterEn == TRUE))
ifIndex = (64 + ifIndex*MAX_EXT_MAC_ADDR_SIZE + pEntry->MatchReptCliIdx);
#endif /* MAC_REPEATER_SUPPORT */
#ifdef MAC_REPEATER_SUPPORT
if ( (pAd->ApCfg.bMACRepeaterEn == TRUE) && (pEntry->bReptCli))
{
RTMPRemoveRepeaterDisconnectEntry(pAd, pEntry->wdev_idx, pEntry->MatchReptCliIdx);
RTMPRemoveRepeaterEntry(pAd, pEntry->wdev_idx, pEntry->MatchReptCliIdx);
}
else
MlmeEnqueue(pAd, APCLI_CTRL_STATE_MACHINE, APCLI_CTRL_DISCONNECT_REQ, 0, NULL, ifIndex);
#endif /* MAC_REPEATER_SUPPORT */
}
}
}
#endif /* APCLI_SUPPORT */
}
