drivers/staging/rtl8192e/dot11d.c

   1 /******************************************************************************
   2  * Copyright(c) 2008 - 2010 Realtek Corporation. All rights reserved.
   3  *
   4  * This program is distributed in the hope that it will be useful, but WITHOUT
   5  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   6  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
   7  * more details.
   8  *
   9  * The full GNU General Public License is included in this distribution in the
  10  * file called LICENSE.
  11  *
  12  * Contact Information:
  13  * wlanfae <wlanfae@realtek.com>
  14  ******************************************************************************/
  15 #include "dot11d.h"
  16
  17 struct channel_list {
  18         u8      Channel[32];
  19         u8      Len;
  20 };
  21
  22 static struct channel_list ChannelPlan[] = {
  23         {{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 36, 40, 44, 48, 52, 56, 60, 64,
  24           149, 153, 157, 161, 165}, 24},
  25         {{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}, 11},
  26         {{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 36, 40, 44, 48, 52, 56,
  27           60, 64}, 21},
  28         {{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13}, 13},
  29         {{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13}, 13},
  30         {{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 36, 40, 44, 48, 52,
  31           56, 60, 64}, 22},
  32         {{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 36, 40, 44, 48, 52,
  33           56, 60, 64}, 22},
  34         {{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13}, 13},
  35         {{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 36, 40, 44, 48, 52,
  36           56, 60, 64}, 22},
  37         {{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 36, 40, 44, 48, 52,
  38          56, 60, 64}, 22},
  39         {{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14}, 14},
  40         {{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13}, 13},
  41         {{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 36, 40, 44, 48, 52,
  42           56, 60, 64}, 21}
  43 };
  44
  45 void dot11d_init(struct rtllib_device *ieee)
  46 {
  47         struct rt_dot11d_info *pDot11dInfo = GET_DOT11D_INFO(ieee);
  48
  49         pDot11dInfo->bEnabled = false;
  50
  51         pDot11dInfo->State = DOT11D_STATE_NONE;
  52         pDot11dInfo->CountryIeLen = 0;
  53         memset(pDot11dInfo->channel_map, 0, MAX_CHANNEL_NUMBER+1);
  54         memset(pDot11dInfo->MaxTxPwrDbmList, 0xFF, MAX_CHANNEL_NUMBER + 1);
  55         RESET_CIE_WATCHDOG(ieee);
  56 }
  57 EXPORT_SYMBOL(dot11d_init);
  58
  59 void Dot11d_Channelmap(u8 channel_plan, struct rtllib_device *ieee)
  60 {
  61         int i, max_chan = 14, min_chan = 1;
  62
  63         ieee->bGlobalDomain = false;
  64
  65         if (ChannelPlan[channel_plan].Len != 0) {
  66                 memset(GET_DOT11D_INFO(ieee)->channel_map, 0,
  67                        sizeof(GET_DOT11D_INFO(ieee)->channel_map));
  68                 for (i = 0; i < ChannelPlan[channel_plan].Len; i++) {
  69                         if (ChannelPlan[channel_plan].Channel[i] < min_chan ||
  70                             ChannelPlan[channel_plan].Channel[i] > max_chan)
  71                                 break;
  72                         GET_DOT11D_INFO(ieee)->channel_map[ChannelPlan
  73                                         [channel_plan].Channel[i]] = 1;
  74                 }
  75         }
  76
  77         switch (channel_plan) {
  78         case COUNTRY_CODE_GLOBAL_DOMAIN:
  79                 ieee->bGlobalDomain = true;
  80                 for (i = 12; i <= 14; i++)
  81                         GET_DOT11D_INFO(ieee)->channel_map[i] = 2;
  82                 ieee->IbssStartChnl = 10;
  83                 ieee->ibss_maxjoin_chal = 11;
  84                 break;
  85
  86         case COUNTRY_CODE_WORLD_WIDE_13:
  87                 for (i = 12; i <= 13; i++)
  88                         GET_DOT11D_INFO(ieee)->channel_map[i] = 2;
  89                 ieee->IbssStartChnl = 10;
  90                 ieee->ibss_maxjoin_chal = 11;
  91                 break;
  92
  93         default:
  94                 ieee->IbssStartChnl = 1;
  95                 ieee->ibss_maxjoin_chal = 14;
  96                 break;
  97         }
  98 }
  99 EXPORT_SYMBOL(Dot11d_Channelmap);
 100
 101 void Dot11d_Reset(struct rtllib_device *ieee)
 102 {
 103         struct rt_dot11d_info *pDot11dInfo = GET_DOT11D_INFO(ieee);
 104         u32 i;
 105
 106         memset(pDot11dInfo->channel_map, 0, MAX_CHANNEL_NUMBER + 1);
 107         memset(pDot11dInfo->MaxTxPwrDbmList, 0xFF, MAX_CHANNEL_NUMBER + 1);
 108         for (i = 1; i <= 11; i++)
 109                 (pDot11dInfo->channel_map)[i] = 1;
 110         for (i = 12; i <= 14; i++)
 111                 (pDot11dInfo->channel_map)[i] = 2;
 112         pDot11dInfo->State = DOT11D_STATE_NONE;
 113         pDot11dInfo->CountryIeLen = 0;
 114         RESET_CIE_WATCHDOG(ieee);
 115 }
 116
 117 void Dot11d_UpdateCountryIe(struct rtllib_device *dev, u8 *pTaddr,
 118                             u16 CoutryIeLen, u8 *pCoutryIe)
 119 {
 120         struct rt_dot11d_info *pDot11dInfo = GET_DOT11D_INFO(dev);
 121         u8 i, j, NumTriples, MaxChnlNum;
 122         struct chnl_txpow_triple *pTriple;
 123
 124         memset(pDot11dInfo->channel_map, 0, MAX_CHANNEL_NUMBER + 1);
 125         memset(pDot11dInfo->MaxTxPwrDbmList, 0xFF, MAX_CHANNEL_NUMBER + 1);
 126         MaxChnlNum = 0;
 127         NumTriples = (CoutryIeLen - 3) / 3;
 128         pTriple = (struct chnl_txpow_triple *)(pCoutryIe + 3);
 129         for (i = 0; i < NumTriples; i++) {
 130                 if (MaxChnlNum >= pTriple->FirstChnl) {
 131                         netdev_info(dev->dev, "Dot11d_UpdateCountryIe(): Invalid country IE, skip it........1\n");
 132                         return;
 133                 }
 134                 if (MAX_CHANNEL_NUMBER < (pTriple->FirstChnl +
 135                     pTriple->NumChnls)) {
 136                         netdev_info(dev->dev, "Dot11d_UpdateCountryIe(): Invalid country IE, skip it........2\n");
 137                         return;
 138                 }
 139
 140                 for (j = 0; j < pTriple->NumChnls; j++) {
 141                         pDot11dInfo->channel_map[pTriple->FirstChnl + j] = 1;
 142                         pDot11dInfo->MaxTxPwrDbmList[pTriple->FirstChnl + j] =
 143                                                  pTriple->MaxTxPowerInDbm;
 144                         MaxChnlNum = pTriple->FirstChnl + j;
 145                 }
 146
 147                 pTriple = (struct chnl_txpow_triple *)((u8 *)pTriple + 3);
 148         }
 149
 150         UPDATE_CIE_SRC(dev, pTaddr);
 151
 152         pDot11dInfo->CountryIeLen = CoutryIeLen;
 153         memcpy(pDot11dInfo->CountryIeBuf, pCoutryIe, CoutryIeLen);
 154         pDot11dInfo->State = DOT11D_STATE_LEARNED;
 155 }
 156
 157 void DOT11D_ScanComplete(struct rtllib_device *dev)
 158 {
 159         struct rt_dot11d_info *pDot11dInfo = GET_DOT11D_INFO(dev);
 160
 161         switch (pDot11dInfo->State) {
 162         case DOT11D_STATE_LEARNED:
 163                 pDot11dInfo->State = DOT11D_STATE_DONE;
 164                 break;
 165         case DOT11D_STATE_DONE:
 166                 Dot11d_Reset(dev);
 167                 break;
 168         case DOT11D_STATE_NONE:
 169                 break;
 170         }
 171 }