LXR linux/drivers/staging/rt2860/sta/auth

   1/*
   2 *************************************************************************
   3 * Ralink Tech Inc.
   4 * 5F., No.36, Taiyuan St., Jhubei City,
   5 * Hsinchu County 302,
   6 * Taiwan, R.O.C.
   7 *
   8 * (c) Copyright 2002-2007, Ralink Technology, Inc.
   9 *
  10 * This program is free software; you can redistribute it and/or modify  *
  11 * it under the terms of the GNU General Public License as published by  *
  12 * the Free Software Foundation; either version 2 of the License, or     *
  13 * (at your option) any later version.                                   *
  14 *                                                                       *
  15 * This program is distributed in the hope that it will be useful,       *
  16 * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  18 * GNU General Public License for more details.                          *
  19 *                                                                       *
  20 * You should have received a copy of the GNU General Public License     *
  21 * along with this program; if not, write to the                         *
  22 * Free Software Foundation, Inc.,                                       *
  23 * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  24 *                                                                       *
  25 *************************************************************************
  26
  27        Module Name:
  28        auth_rsp.c
  29
  30        Abstract:
  31
  32        Revision History:
  33        Who                     When                    What
  34        --------        ----------              ----------------------------------------------
  35        John            2004-10-1               copy from RT2560
  36*/
  37#include "../rt_config.h"
  38
  39/*
  40    ==========================================================================
  41    Description:
  42        authentication state machine init procedure
  43    Parameters:
  44        Sm - the state machine
  45
  46        IRQL = PASSIVE_LEVEL
  47
  48    ==========================================================================
  49 */
  50VOID AuthRspStateMachineInit(
  51    IN PRTMP_ADAPTER pAd,
  52    IN PSTATE_MACHINE Sm,
  53    IN STATE_MACHINE_FUNC Trans[])
  54{
  55    StateMachineInit(Sm, Trans, MAX_AUTH_RSP_STATE, MAX_AUTH_RSP_MSG, (STATE_MACHINE_FUNC)Drop, AUTH_RSP_IDLE, AUTH_RSP_MACHINE_BASE);
  56
  57    // column 1
  58    StateMachineSetAction(Sm, AUTH_RSP_IDLE, MT2_PEER_DEAUTH, (STATE_MACHINE_FUNC)PeerDeauthAction);
  59
  60    // column 2
  61    StateMachineSetAction(Sm, AUTH_RSP_WAIT_CHAL, MT2_PEER_DEAUTH, (STATE_MACHINE_FUNC)PeerDeauthAction);
  62
  63}
  64
  65/*
  66    ==========================================================================
  67    Description:
  68
  69        IRQL = DISPATCH_LEVEL
  70
  71    ==========================================================================
  72*/
  73VOID PeerAuthSimpleRspGenAndSend(
  74    IN PRTMP_ADAPTER pAd,
  75    IN PHEADER_802_11 pHdr80211,
  76    IN USHORT Alg,
  77    IN USHORT Seq,
  78    IN USHORT Reason,
  79    IN USHORT Status)
  80{
  81    HEADER_802_11     AuthHdr;
  82    ULONG             FrameLen = 0;
  83    PUCHAR            pOutBuffer = NULL;
  84    NDIS_STATUS       NStatus;
  85
  86    if (Reason != MLME_SUCCESS)
  87    {
  88        DBGPRINT(RT_DEBUG_TRACE, ("Peer AUTH fail...\n"));
  89        return;
  90    }
  91
  92        //Get an unused nonpaged memory
  93    NStatus = MlmeAllocateMemory(pAd, &pOutBuffer);
  94    if (NStatus != NDIS_STATUS_SUCCESS)
  95        return;
  96
  97    DBGPRINT(RT_DEBUG_TRACE, ("Send AUTH response (seq#2)...\n"));
  98    MgtMacHeaderInit(pAd, &AuthHdr, SUBTYPE_AUTH, 0, pHdr80211->Addr2, pAd->MlmeAux.Bssid);
  99    MakeOutgoingFrame(pOutBuffer,               &FrameLen,
 100                      sizeof(HEADER_802_11),    &AuthHdr,
 101                      2,                        &Alg,
 102                      2,                        &Seq,
 103                      2,                        &Reason,
 104                      END_OF_ARGS);
 105    MiniportMMRequest(pAd, 0, pOutBuffer, FrameLen);
 106        MlmeFreeMemory(pAd, pOutBuffer);
 107}
 108
 109/*
 110    ==========================================================================
 111    Description:
 112
 113        IRQL = DISPATCH_LEVEL
 114
 115    ==========================================================================
 116*/
 117VOID PeerDeauthAction(
 118    IN PRTMP_ADAPTER pAd,
 119    IN PMLME_QUEUE_ELEM Elem)
 120{
 121    UCHAR       Addr2[MAC_ADDR_LEN];
 122    USHORT      Reason;
 123
 124    if (PeerDeauthSanity(pAd, Elem->Msg, Elem->MsgLen, Addr2, &Reason))
 125    {
 126        if (INFRA_ON(pAd) && MAC_ADDR_EQUAL(Addr2, pAd->CommonCfg.Bssid))
 127        {
 128            DBGPRINT(RT_DEBUG_TRACE,("AUTH_RSP - receive DE-AUTH from our AP (Reason=%d)\n", Reason));
 129
 130            {
 131                union iwreq_data    wrqu;
 132                memset(wrqu.ap_addr.sa_data, 0, MAC_ADDR_LEN);
 133                wireless_send_event(pAd->net_dev, SIOCGIWAP, &wrqu, NULL);
 134            }
 135
 136                        // send wireless event - for deauthentication
 137                        if (pAd->CommonCfg.bWirelessEvent)
 138                                RTMPSendWirelessEvent(pAd, IW_DEAUTH_EVENT_FLAG, pAd->MacTab.Content[BSSID_WCID].Addr, BSS0, 0);
 139
 140            LinkDown(pAd, TRUE);
 141        }
 142    }
 143    else
 144    {
 145        DBGPRINT(RT_DEBUG_TRACE,("AUTH_RSP - PeerDeauthAction() sanity check fail\n"));
 146    }
 147}
 148
 149