330 lines
8.8 KiB
C
330 lines
8.8 KiB
C
/*
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* Copyright (c) 1996, 2005 VIA Networking Technologies, Inc.
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*
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* File: IEEE11h.c
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*
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* Purpose:
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*
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* Functions:
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*
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* Revision History:
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*
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* Author: Yiching Chen
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*
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* Date: Mar. 31, 2005
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*
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*/
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#include "ttype.h"
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#include "tmacro.h"
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#include "tether.h"
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#include "IEEE11h.h"
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#include "device.h"
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#include "wmgr.h"
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#include "rxtx.h"
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#include "channel.h"
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/*--------------------- Static Definitions -------------------------*/
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static int msglevel = MSG_LEVEL_INFO;
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#pragma pack(1)
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typedef struct _WLAN_FRAME_ACTION {
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WLAN_80211HDR_A3 Header;
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unsigned char byCategory;
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unsigned char byAction;
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unsigned char abyVars[1];
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} WLAN_FRAME_ACTION, *PWLAN_FRAME_ACTION;
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typedef struct _WLAN_FRAME_MSRREQ {
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WLAN_80211HDR_A3 Header;
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unsigned char byCategory;
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unsigned char byAction;
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unsigned char byDialogToken;
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WLAN_IE_MEASURE_REQ sMSRReqEIDs[1];
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} WLAN_FRAME_MSRREQ, *PWLAN_FRAME_MSRREQ;
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typedef struct _WLAN_FRAME_MSRREP {
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WLAN_80211HDR_A3 Header;
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unsigned char byCategory;
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unsigned char byAction;
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unsigned char byDialogToken;
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WLAN_IE_MEASURE_REP sMSRRepEIDs[1];
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} WLAN_FRAME_MSRREP, *PWLAN_FRAME_MSRREP;
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typedef struct _WLAN_FRAME_TPCREQ {
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WLAN_80211HDR_A3 Header;
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unsigned char byCategory;
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unsigned char byAction;
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unsigned char byDialogToken;
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WLAN_IE_TPC_REQ sTPCReqEIDs;
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} WLAN_FRAME_TPCREQ, *PWLAN_FRAME_TPCREQ;
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typedef struct _WLAN_FRAME_TPCREP {
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WLAN_80211HDR_A3 Header;
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unsigned char byCategory;
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unsigned char byAction;
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unsigned char byDialogToken;
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WLAN_IE_TPC_REP sTPCRepEIDs;
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} WLAN_FRAME_TPCREP, *PWLAN_FRAME_TPCREP;
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#pragma pack()
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/* action field reference ieee 802.11h Table 20e */
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#define ACTION_MSRREQ 0
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#define ACTION_MSRREP 1
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#define ACTION_TPCREQ 2
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#define ACTION_TPCREP 3
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#define ACTION_CHSW 4
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/*--------------------- Static Classes ----------------------------*/
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/*--------------------- Static Variables --------------------------*/
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/*--------------------- Static Functions --------------------------*/
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static bool s_bRxMSRReq(PSMgmtObject pMgmt, PWLAN_FRAME_MSRREQ pMSRReq,
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unsigned int uLength)
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{
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size_t uNumOfEIDs = 0;
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bool bResult = true;
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if (uLength <= WLAN_A3FR_MAXLEN)
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memcpy(pMgmt->abyCurrentMSRReq, pMSRReq, uLength);
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uNumOfEIDs = ((uLength - offsetof(WLAN_FRAME_MSRREQ,
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sMSRReqEIDs))/
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(sizeof(WLAN_IE_MEASURE_REQ)));
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pMgmt->pCurrMeasureEIDRep = &(((PWLAN_FRAME_MSRREP)
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(pMgmt->abyCurrentMSRRep))->sMSRRepEIDs[0]);
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pMgmt->uLengthOfRepEIDs = 0;
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bResult = CARDbStartMeasure(pMgmt->pAdapter,
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((PWLAN_FRAME_MSRREQ)
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(pMgmt->abyCurrentMSRReq))->sMSRReqEIDs,
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uNumOfEIDs
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);
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return bResult;
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}
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static bool s_bRxTPCReq(PSMgmtObject pMgmt,
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PWLAN_FRAME_TPCREQ pTPCReq,
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unsigned char byRate,
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unsigned char byRSSI)
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{
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PWLAN_FRAME_TPCREP pFrame;
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PSTxMgmtPacket pTxPacket = NULL;
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pTxPacket = (PSTxMgmtPacket)pMgmt->pbyMgmtPacketPool;
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memset(pTxPacket, 0, sizeof(STxMgmtPacket) + WLAN_A3FR_MAXLEN);
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pTxPacket->p80211Header = (PUWLAN_80211HDR)((unsigned char *)pTxPacket +
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sizeof(STxMgmtPacket));
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pFrame = (PWLAN_FRAME_TPCREP)((unsigned char *)pTxPacket +
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sizeof(STxMgmtPacket));
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pFrame->Header.wFrameCtl = (WLAN_SET_FC_FTYPE(WLAN_FTYPE_MGMT) |
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WLAN_SET_FC_FSTYPE(WLAN_FSTYPE_ACTION)
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);
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memcpy(pFrame->Header.abyAddr1,
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pTPCReq->Header.abyAddr2,
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WLAN_ADDR_LEN);
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memcpy(pFrame->Header.abyAddr2,
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CARDpGetCurrentAddress(pMgmt->pAdapter),
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WLAN_ADDR_LEN);
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memcpy(pFrame->Header.abyAddr3,
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pMgmt->abyCurrBSSID,
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WLAN_BSSID_LEN);
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pFrame->byCategory = 0;
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pFrame->byAction = 3;
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pFrame->byDialogToken = ((PWLAN_FRAME_MSRREQ)
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(pMgmt->abyCurrentMSRReq))->byDialogToken;
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pFrame->sTPCRepEIDs.byElementID = WLAN_EID_TPC_REP;
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pFrame->sTPCRepEIDs.len = 2;
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pFrame->sTPCRepEIDs.byTxPower = CARDbyGetTransmitPower(pMgmt->pAdapter);
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switch (byRate) {
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case RATE_54M:
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pFrame->sTPCRepEIDs.byLinkMargin = 65 - byRSSI;
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break;
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case RATE_48M:
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pFrame->sTPCRepEIDs.byLinkMargin = 66 - byRSSI;
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break;
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case RATE_36M:
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pFrame->sTPCRepEIDs.byLinkMargin = 70 - byRSSI;
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break;
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case RATE_24M:
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pFrame->sTPCRepEIDs.byLinkMargin = 74 - byRSSI;
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break;
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case RATE_18M:
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pFrame->sTPCRepEIDs.byLinkMargin = 77 - byRSSI;
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break;
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case RATE_12M:
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pFrame->sTPCRepEIDs.byLinkMargin = 79 - byRSSI;
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break;
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case RATE_9M:
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pFrame->sTPCRepEIDs.byLinkMargin = 81 - byRSSI;
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break;
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case RATE_6M:
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default:
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pFrame->sTPCRepEIDs.byLinkMargin = 82 - byRSSI;
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break;
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}
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pTxPacket->cbMPDULen = sizeof(WLAN_FRAME_TPCREP);
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pTxPacket->cbPayloadLen = sizeof(WLAN_FRAME_TPCREP) -
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WLAN_HDR_ADDR3_LEN;
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if (csMgmt_xmit(pMgmt->pAdapter, pTxPacket) != CMD_STATUS_PENDING)
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return false;
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return true;
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/* return (CARDbSendPacket(pMgmt->pAdapter, pFrame, PKT_TYPE_802_11_MNG,
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sizeof(WLAN_FRAME_TPCREP))); */
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}
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/*--------------------- Export Variables --------------------------*/
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/*--------------------- Export Functions --------------------------*/
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/*+
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*
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* Description:
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* Handles action management frames.
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*
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* Parameters:
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* In:
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* pMgmt - Management Object structure
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* pRxPacket - Received packet
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* Out:
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* none
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*
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* Return Value: None.
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*
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-*/
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bool
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IEEE11hbMgrRxAction(void *pMgmtHandle, void *pRxPacket)
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{
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PSMgmtObject pMgmt = (PSMgmtObject) pMgmtHandle;
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PWLAN_FRAME_ACTION pAction = NULL;
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unsigned int uLength = 0;
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PWLAN_IE_CH_SW pChannelSwitch = NULL;
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/* decode the frame */
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uLength = ((PSRxMgmtPacket)pRxPacket)->cbMPDULen;
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if (uLength > WLAN_A3FR_MAXLEN)
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return false;
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pAction = (PWLAN_FRAME_ACTION)
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(((PSRxMgmtPacket)pRxPacket)->p80211Header);
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if (pAction->byCategory == 0) {
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switch (pAction->byAction) {
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case ACTION_MSRREQ:
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return s_bRxMSRReq(pMgmt,
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(PWLAN_FRAME_MSRREQ)
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pAction,
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uLength);
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break;
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case ACTION_MSRREP:
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break;
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case ACTION_TPCREQ:
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return s_bRxTPCReq(pMgmt,
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(PWLAN_FRAME_TPCREQ) pAction,
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((PSRxMgmtPacket)pRxPacket)->byRxRate,
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(unsigned char)
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((PSRxMgmtPacket)pRxPacket)->uRSSI);
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break;
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case ACTION_TPCREP:
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break;
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case ACTION_CHSW:
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pChannelSwitch = (PWLAN_IE_CH_SW) (pAction->abyVars);
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if ((pChannelSwitch->byElementID == WLAN_EID_CH_SWITCH)
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&& (pChannelSwitch->len == 3)) {
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/* valid element id */
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CARDbChannelSwitch(pMgmt->pAdapter,
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pChannelSwitch->byMode,
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get_channel_mapping(pMgmt->pAdapter,
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pChannelSwitch->byChannel,
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pMgmt->eCurrentPHYMode),
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pChannelSwitch->byCount);
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}
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break;
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default:
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DBG_PRT(MSG_LEVEL_DEBUG,
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KERN_INFO"Unknown Action = %d\n",
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pAction->byAction);
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break;
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}
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} else {
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DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"Unknown Category = %d\n",
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pAction->byCategory);
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pAction->byCategory |= 0x80;
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/*return (CARDbSendPacket(pMgmt->pAdapter, pAction, PKT_TYPE_802_11_MNG,
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uLength));*/
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return true;
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}
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return true;
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}
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bool IEEE11hbMSRRepTx(void *pMgmtHandle)
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{
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PSMgmtObject pMgmt = (PSMgmtObject) pMgmtHandle;
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PWLAN_FRAME_MSRREP pMSRRep = (PWLAN_FRAME_MSRREP)
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(pMgmt->abyCurrentMSRRep + sizeof(STxMgmtPacket));
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size_t uLength = 0;
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PSTxMgmtPacket pTxPacket = NULL;
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pTxPacket = (PSTxMgmtPacket)pMgmt->abyCurrentMSRRep;
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memset(pTxPacket, 0, sizeof(STxMgmtPacket) + WLAN_A3FR_MAXLEN);
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pTxPacket->p80211Header = (PUWLAN_80211HDR)((unsigned char *)pTxPacket +
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sizeof(STxMgmtPacket));
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pMSRRep->Header.wFrameCtl = (WLAN_SET_FC_FTYPE(WLAN_FTYPE_MGMT) |
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WLAN_SET_FC_FSTYPE(WLAN_FSTYPE_ACTION)
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);
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memcpy(pMSRRep->Header.abyAddr1, ((PWLAN_FRAME_MSRREQ)
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(pMgmt->abyCurrentMSRReq))->Header.abyAddr2, WLAN_ADDR_LEN);
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memcpy(pMSRRep->Header.abyAddr2,
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CARDpGetCurrentAddress(pMgmt->pAdapter), WLAN_ADDR_LEN);
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memcpy(pMSRRep->Header.abyAddr3, pMgmt->abyCurrBSSID, WLAN_BSSID_LEN);
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pMSRRep->byCategory = 0;
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pMSRRep->byAction = 1;
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pMSRRep->byDialogToken = ((PWLAN_FRAME_MSRREQ)
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(pMgmt->abyCurrentMSRReq))->byDialogToken;
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uLength = pMgmt->uLengthOfRepEIDs + offsetof(WLAN_FRAME_MSRREP,
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sMSRRepEIDs);
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pTxPacket->cbMPDULen = uLength;
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pTxPacket->cbPayloadLen = uLength - WLAN_HDR_ADDR3_LEN;
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if (csMgmt_xmit(pMgmt->pAdapter, pTxPacket) != CMD_STATUS_PENDING)
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return false;
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return true;
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/* return (CARDbSendPacket(pMgmt->pAdapter, pMSRRep, PKT_TYPE_802_11_MNG,
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uLength)); */
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}
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