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 * You should have received a copy of the GNU General Public License along with
10 * this program; if not, write to the Free Software Foundation, Inc.,
11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
12 *
13 * The full GNU General Public License is included in this distribution in the
14 * file called LICENSE.
15 *
16 * Contact Information:
17 * wlanfae <wlanfae@realtek.com>
18 ******************************************************************************/
19 #include "dot11d.h"
20
21 struct channel_list {
22 u8 Channel[32];
23 u8 Len;
24 };
25
26 static struct channel_list ChannelPlan[] = {
27 {{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 36, 40, 44, 48, 52, 56, 60, 64,
28 149, 153, 157, 161, 165}, 24},
29 {{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}, 11},
30 {{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 36, 40, 44, 48, 52, 56,
31 60, 64}, 21},
32 {{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13}, 13},
33 {{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13}, 13},
34 {{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 36, 40, 44, 48, 52,
35 56, 60, 64}, 22},
36 {{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 36, 40, 44, 48, 52,
37 56, 60, 64}, 22},
38 {{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13}, 13},
39 {{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 36, 40, 44, 48, 52,
40 56, 60, 64}, 22},
41 {{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 36, 40, 44, 48, 52,
42 56, 60, 64}, 22},
43 {{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14}, 14},
44 {{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13}, 13},
45 {{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 36, 40, 44, 48, 52,
46 56, 60, 64}, 21}
47 };
48
dot11d_init(struct rtllib_device * ieee)49 void dot11d_init(struct rtllib_device *ieee)
50 {
51 struct rt_dot11d_info *pDot11dInfo = GET_DOT11D_INFO(ieee);
52
53 pDot11dInfo->bEnabled = false;
54
55 pDot11dInfo->State = DOT11D_STATE_NONE;
56 pDot11dInfo->CountryIeLen = 0;
57 memset(pDot11dInfo->channel_map, 0, MAX_CHANNEL_NUMBER+1);
58 memset(pDot11dInfo->MaxTxPwrDbmList, 0xFF, MAX_CHANNEL_NUMBER+1);
59 RESET_CIE_WATCHDOG(ieee);
60
61 }
62 EXPORT_SYMBOL(dot11d_init);
63
Dot11d_Channelmap(u8 channel_plan,struct rtllib_device * ieee)64 void Dot11d_Channelmap(u8 channel_plan, struct rtllib_device *ieee)
65 {
66 int i, max_chan = 14, min_chan = 1;
67
68 ieee->bGlobalDomain = false;
69
70 if (ChannelPlan[channel_plan].Len != 0) {
71 memset(GET_DOT11D_INFO(ieee)->channel_map, 0,
72 sizeof(GET_DOT11D_INFO(ieee)->channel_map));
73 for (i = 0; i < ChannelPlan[channel_plan].Len; i++) {
74 if (ChannelPlan[channel_plan].Channel[i] < min_chan ||
75 ChannelPlan[channel_plan].Channel[i] > max_chan)
76 break;
77 GET_DOT11D_INFO(ieee)->channel_map[ChannelPlan
78 [channel_plan].Channel[i]] = 1;
79 }
80 }
81
82 switch (channel_plan) {
83 case COUNTRY_CODE_GLOBAL_DOMAIN:
84 ieee->bGlobalDomain = true;
85 for (i = 12; i <= 14; i++)
86 GET_DOT11D_INFO(ieee)->channel_map[i] = 2;
87 ieee->IbssStartChnl = 10;
88 ieee->ibss_maxjoin_chal = 11;
89 break;
90
91 case COUNTRY_CODE_WORLD_WIDE_13:
92 for (i = 12; i <= 13; i++)
93 GET_DOT11D_INFO(ieee)->channel_map[i] = 2;
94 ieee->IbssStartChnl = 10;
95 ieee->ibss_maxjoin_chal = 11;
96 break;
97
98 default:
99 ieee->IbssStartChnl = 1;
100 ieee->ibss_maxjoin_chal = 14;
101 break;
102 }
103 }
104 EXPORT_SYMBOL(Dot11d_Channelmap);
105
106
Dot11d_Reset(struct rtllib_device * ieee)107 void Dot11d_Reset(struct rtllib_device *ieee)
108 {
109 struct rt_dot11d_info *pDot11dInfo = GET_DOT11D_INFO(ieee);
110 u32 i;
111
112 memset(pDot11dInfo->channel_map, 0, MAX_CHANNEL_NUMBER+1);
113 memset(pDot11dInfo->MaxTxPwrDbmList, 0xFF, MAX_CHANNEL_NUMBER+1);
114 for (i = 1; i <= 11; i++)
115 (pDot11dInfo->channel_map)[i] = 1;
116 for (i = 12; i <= 14; i++)
117 (pDot11dInfo->channel_map)[i] = 2;
118 pDot11dInfo->State = DOT11D_STATE_NONE;
119 pDot11dInfo->CountryIeLen = 0;
120 RESET_CIE_WATCHDOG(ieee);
121 }
122
Dot11d_UpdateCountryIe(struct rtllib_device * dev,u8 * pTaddr,u16 CoutryIeLen,u8 * pCoutryIe)123 void Dot11d_UpdateCountryIe(struct rtllib_device *dev, u8 *pTaddr,
124 u16 CoutryIeLen, u8 *pCoutryIe)
125 {
126 struct rt_dot11d_info *pDot11dInfo = GET_DOT11D_INFO(dev);
127 u8 i, j, NumTriples, MaxChnlNum;
128 struct chnl_txpow_triple *pTriple;
129
130 memset(pDot11dInfo->channel_map, 0, MAX_CHANNEL_NUMBER+1);
131 memset(pDot11dInfo->MaxTxPwrDbmList, 0xFF, MAX_CHANNEL_NUMBER+1);
132 MaxChnlNum = 0;
133 NumTriples = (CoutryIeLen - 3) / 3;
134 pTriple = (struct chnl_txpow_triple *)(pCoutryIe + 3);
135 for (i = 0; i < NumTriples; i++) {
136 if (MaxChnlNum >= pTriple->FirstChnl) {
137 netdev_info(dev->dev, "Dot11d_UpdateCountryIe(): Invalid country IE, skip it........1\n");
138 return;
139 }
140 if (MAX_CHANNEL_NUMBER < (pTriple->FirstChnl +
141 pTriple->NumChnls)) {
142 netdev_info(dev->dev, "Dot11d_UpdateCountryIe(): Invalid country IE, skip it........2\n");
143 return;
144 }
145
146 for (j = 0; j < pTriple->NumChnls; j++) {
147 pDot11dInfo->channel_map[pTriple->FirstChnl + j] = 1;
148 pDot11dInfo->MaxTxPwrDbmList[pTriple->FirstChnl + j] =
149 pTriple->MaxTxPowerInDbm;
150 MaxChnlNum = pTriple->FirstChnl + j;
151 }
152
153 pTriple = (struct chnl_txpow_triple *)((u8 *)pTriple + 3);
154 }
155
156 UPDATE_CIE_SRC(dev, pTaddr);
157
158 pDot11dInfo->CountryIeLen = CoutryIeLen;
159 memcpy(pDot11dInfo->CountryIeBuf, pCoutryIe, CoutryIeLen);
160 pDot11dInfo->State = DOT11D_STATE_LEARNED;
161 }
162
DOT11D_GetMaxTxPwrInDbm(struct rtllib_device * dev,u8 Channel)163 u8 DOT11D_GetMaxTxPwrInDbm(struct rtllib_device *dev, u8 Channel)
164 {
165 struct rt_dot11d_info *pDot11dInfo = GET_DOT11D_INFO(dev);
166 u8 MaxTxPwrInDbm = 255;
167
168 if (MAX_CHANNEL_NUMBER < Channel) {
169 netdev_info(dev->dev, "DOT11D_GetMaxTxPwrInDbm(): Invalid Channel\n");
170 return MaxTxPwrInDbm;
171 }
172 if (pDot11dInfo->channel_map[Channel])
173 MaxTxPwrInDbm = pDot11dInfo->MaxTxPwrDbmList[Channel];
174
175 return MaxTxPwrInDbm;
176 }
177
DOT11D_ScanComplete(struct rtllib_device * dev)178 void DOT11D_ScanComplete(struct rtllib_device *dev)
179 {
180 struct rt_dot11d_info *pDot11dInfo = GET_DOT11D_INFO(dev);
181
182 switch (pDot11dInfo->State) {
183 case DOT11D_STATE_LEARNED:
184 pDot11dInfo->State = DOT11D_STATE_DONE;
185 break;
186 case DOT11D_STATE_DONE:
187 Dot11d_Reset(dev);
188 break;
189 case DOT11D_STATE_NONE:
190 break;
191 }
192 }
193
ToLegalChannel(struct rtllib_device * dev,u8 channel)194 int ToLegalChannel(struct rtllib_device *dev, u8 channel)
195 {
196 struct rt_dot11d_info *pDot11dInfo = GET_DOT11D_INFO(dev);
197 u8 default_chn = 0;
198 u32 i;
199
200 for (i = 1; i <= MAX_CHANNEL_NUMBER; i++) {
201 if (pDot11dInfo->channel_map[i] > 0) {
202 default_chn = i;
203 break;
204 }
205 }
206
207 if (MAX_CHANNEL_NUMBER < channel) {
208 netdev_err(dev->dev, "%s(): Invalid Channel\n", __func__);
209 return default_chn;
210 }
211
212 if (pDot11dInfo->channel_map[channel] > 0)
213 return channel;
214
215 return default_chn;
216 }
217