drivers/net/wireless/mt5931/nic/p2p_nic.c

   1 /*
   2 ** $Id: @(#) p2p_nic.c@@
   3 */
   4
   5 /*! \file   p2p_nic.c
   6     \brief  Wi-Fi Direct Functions that provide operation in NIC's (Network Interface Card) point of view.
   7
   8     This file includes functions which unite multiple hal(Hardware) operations
   9     and also take the responsibility of Software Resource Management in order
  10     to keep the synchronization with Hardware Manipulation.
  11 */
  12
  13
  14
  15
  16
  17 /*******************************************************************************
  18 *                         C O M P I L E R   F L A G S
  19 ********************************************************************************
  20 */
  21
  22 /*******************************************************************************
  23 *                    E X T E R N A L   R E F E R E N C E S
  24 ********************************************************************************
  25 */
  26
  27 #include "precomp.h"
  28
  29 /*******************************************************************************
  30 *                              C O N S T A N T S
  31 ********************************************************************************
  32 */
  33
  34 /*******************************************************************************
  35 *                             D A T A   T Y P E S
  36 ********************************************************************************
  37 */
  38
  39 /*******************************************************************************
  40 *                            P U B L I C   D A T A
  41 ********************************************************************************
  42 */
  43
  44 /*******************************************************************************
  45 *                           P R I V A T E   D A T A
  46 ********************************************************************************
  47 */
  48
  49 /*******************************************************************************
  50 *                                 M A C R O S
  51 ********************************************************************************
  52 */
  53
  54 /*******************************************************************************
  55 *                   F U N C T I O N   D E C L A R A T I O N S
  56 ********************************************************************************
  57 */
  58
  59 /*******************************************************************************
  60 *                              F U N C T I O N S
  61 ********************************************************************************
  62 */
  63
  64
  65 /*----------------------------------------------------------------------------*/
  66 /*!
  67 * @brief When Probe Rsp & Beacon frame is received and decide a P2P device,
  68 *        this function will be invoked to buffer scan result
  69 *
  70 * @param prAdapter              Pointer to the Adapter structure.
  71 * @param prEventScanResult      Pointer of EVENT_SCAN_RESULT_T.
  72 *
  73 * @return (none)
  74 */
  75 /*----------------------------------------------------------------------------*/
  76 VOID
  77 nicRxAddP2pDevice (
  78     IN P_ADAPTER_T  prAdapter,
  79     IN P_EVENT_P2P_DEV_DISCOVER_RESULT_T prP2pResult,
  80     IN PUINT_8 pucRxIEBuf,
  81     IN UINT_16 u2RxIELength
  82     )
  83 {
  84     P_P2P_INFO_T prP2pInfo = (P_P2P_INFO_T)NULL;
  85     P_EVENT_P2P_DEV_DISCOVER_RESULT_T prTargetResult = (P_EVENT_P2P_DEV_DISCOVER_RESULT_T)NULL;
  86     UINT_32 u4Idx = 0;
  87     BOOLEAN bUpdate = FALSE;
  88
  89     PUINT_8 pucIeBuf = (PUINT_8)NULL;
  90     UINT_16 u2IELength = 0;
  91     UINT_8  zeroMac[] = { 0x0, 0x0, 0x0, 0x0, 0x0, 0x0};
  92
  93     ASSERT(prAdapter);
  94
  95     prP2pInfo = prAdapter->prP2pInfo;
  96
  97     for (u4Idx = 0; u4Idx < prP2pInfo->u4DeviceNum; u4Idx++) {
  98         prTargetResult = &prP2pInfo->arP2pDiscoverResult[u4Idx];
  99
 100         if (EQUAL_MAC_ADDR(prTargetResult->aucDeviceAddr, prP2pResult->aucDeviceAddr)) {
 101             bUpdate = TRUE;
 102
 103             /* Backup OLD buffer result. */
 104             pucIeBuf = prTargetResult->pucIeBuf;
 105             u2IELength = prTargetResult->u2IELength;
 106
 107             /* Update Device Info. */
 108             // zero
 109             kalMemZero(prTargetResult, sizeof(EVENT_P2P_DEV_DISCOVER_RESULT_T));
 110
 111             // then buffer
 112             kalMemCopy(prTargetResult,
 113                 (PVOID)prP2pResult,
 114                 sizeof(EVENT_P2P_DEV_DISCOVER_RESULT_T));
 115
 116             /* See if new IE length is longer or not. */
 117             if ((u2RxIELength > u2IELength) && (u2IELength != 0)) {
 118                 /* Buffer is not enough. */
 119                 u2RxIELength = u2IELength;
 120             }
 121             else if ((u2IELength == 0) && (u2RxIELength != 0)) {
 122                 /* RX new IE buf. */
 123                 ASSERT(pucIeBuf == NULL);
 124                 pucIeBuf = prP2pInfo->pucCurrIePtr;
 125
 126                 if (((UINT_32)prP2pInfo->pucCurrIePtr + (UINT_32)u2RxIELength) >
 127                         (UINT_32)&prP2pInfo->aucCommIePool[CFG_MAX_COMMON_IE_BUF_LEN]) {
 128                     /* Common Buffer is no enough. */
 129                     u2RxIELength = (UINT_16)((UINT_32)&prP2pInfo->aucCommIePool[CFG_MAX_COMMON_IE_BUF_LEN] - (UINT_32)prP2pInfo->pucCurrIePtr);
 130                 }
 131
 132                 /* Step to next buffer address. */
 133                 prP2pInfo->pucCurrIePtr = (PUINT_8)((UINT_32)prP2pInfo->pucCurrIePtr + (UINT_32)u2RxIELength);
 134             }
 135
 136             /* Restore buffer pointer. */
 137             prTargetResult->pucIeBuf = pucIeBuf;
 138
 139             if (pucRxIEBuf) {
 140                 /* If new received IE is availabe.
 141                   * Replace the old one & update new IE length.
 142                   */
 143                 kalMemCopy(pucIeBuf, pucRxIEBuf, u2RxIELength);
 144                 prTargetResult->u2IELength = u2RxIELength;
 145             }
 146             else {
 147                 /* There is no new IE information, keep the old one. */
 148                 prTargetResult->u2IELength = u2IELength;
 149             }
 150         }
 151     }
 152
 153     if (!bUpdate) {
 154         /* We would flush the whole scan result after each scan request is issued.
 155           * If P2P device is too many, it may over the scan list.
 156           */
 157         if ((u4Idx < CFG_MAX_NUM_BSS_LIST) && (UNEQUAL_MAC_ADDR(zeroMac, prP2pResult->aucDeviceAddr))) { /* whsu:XXX */
 158             prTargetResult = &prP2pInfo->arP2pDiscoverResult[u4Idx];
 159
 160             // zero
 161             kalMemZero(prTargetResult, sizeof(EVENT_P2P_DEV_DISCOVER_RESULT_T));
 162
 163             // then buffer
 164             kalMemCopy(prTargetResult,
 165                 (PVOID)prP2pResult,
 166                 sizeof(EVENT_P2P_DEV_DISCOVER_RESULT_T));
 167
 168             //printk("DVC FND %d " MACSTR", " MACSTR "\n", prP2pInfo->u4DeviceNum, MAC2STR(prP2pResult->aucDeviceAddr), MAC2STR(prTargetResult->aucDeviceAddr));
 169
 170             if (u2RxIELength) {
 171                 prTargetResult->pucIeBuf = prP2pInfo->pucCurrIePtr;
 172
 173                 if (((UINT_32)prP2pInfo->pucCurrIePtr + (UINT_32)u2RxIELength) >
 174                         (UINT_32)&prP2pInfo->aucCommIePool[CFG_MAX_COMMON_IE_BUF_LEN]) {
 175                     /* Common Buffer is no enough. */
 176                     u2IELength = (UINT_16)((UINT_32)&prP2pInfo->aucCommIePool[CFG_MAX_COMMON_IE_BUF_LEN] - (UINT_32)prP2pInfo->pucCurrIePtr);
 177                 }
 178                 else {
 179                     u2IELength = u2RxIELength;
 180                 }
 181
 182                 prP2pInfo->pucCurrIePtr = (PUINT_8)((UINT_32)prP2pInfo->pucCurrIePtr + (UINT_32)u2IELength);
 183
 184                 kalMemCopy((PVOID)prTargetResult->pucIeBuf, (PVOID)pucRxIEBuf, (UINT_32)u2IELength);
 185                 prTargetResult->u2IELength = u2IELength;
 186             }
 187             else {
 188                 prTargetResult->pucIeBuf = NULL;
 189                 prTargetResult->u2IELength = 0;
 190             }
 191
 192             prP2pInfo->u4DeviceNum++;
 193
 194         }
 195         else {
 196             // TODO: Fixme to replace an old one. (?)
 197             ASSERT(FALSE);
 198         }
 199     }
 200 } /* nicRxAddP2pDevice */
 201
 202
 203