Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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
21struct channel_list {
22 u8 Channel[32];
23 u8 Len;
24};
25
26static 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
49void Dot11d_Init(struct rtllib_device *ieee)
50{
51 struct rt_dot11d_info *pDot11dInfo = GET_DOT11D_INFO(ieee);
52 pDot11dInfo->bEnabled = false;
53
54 pDot11dInfo->State = DOT11D_STATE_NONE;
55 pDot11dInfo->CountryIeLen = 0;
56 memset(pDot11dInfo->channel_map, 0, MAX_CHANNEL_NUMBER+1);
57 memset(pDot11dInfo->MaxTxPwrDbmList, 0xFF, MAX_CHANNEL_NUMBER+1);
58 RESET_CIE_WATCHDOG(ieee);
59
60}
61
62void Dot11d_Channelmap(u8 channel_plan, struct rtllib_device *ieee)
63{
64 int i, max_chan = 14, min_chan = 1;
65
66 ieee->bGlobalDomain = false;
67
68 if (ChannelPlan[channel_plan].Len != 0) {
69 memset(GET_DOT11D_INFO(ieee)->channel_map, 0,
70 sizeof(GET_DOT11D_INFO(ieee)->channel_map));
71 for (i = 0; i < ChannelPlan[channel_plan].Len; i++) {
72 if (ChannelPlan[channel_plan].Channel[i] < min_chan ||
73 ChannelPlan[channel_plan].Channel[i] > max_chan)
74 break;
75 GET_DOT11D_INFO(ieee)->channel_map[ChannelPlan
76 [channel_plan].Channel[i]] = 1;
77 }
78 }
79
80 switch (channel_plan) {
81 case COUNTRY_CODE_GLOBAL_DOMAIN:
82 ieee->bGlobalDomain = true;
83 for (i = 12; i <= 14; i++)
84 GET_DOT11D_INFO(ieee)->channel_map[i] = 2;
85 ieee->IbssStartChnl = 10;
86 ieee->ibss_maxjoin_chal = 11;
87 break;
88
89 case COUNTRY_CODE_WORLD_WIDE_13:
90 for (i = 12; i <= 13; i++)
91 GET_DOT11D_INFO(ieee)->channel_map[i] = 2;
92 ieee->IbssStartChnl = 10;
93 ieee->ibss_maxjoin_chal = 11;
94 break;
95
96 default:
97 ieee->IbssStartChnl = 1;
98 ieee->ibss_maxjoin_chal = 14;
99 break;
100 }
101}
102
103
104void Dot11d_Reset(struct rtllib_device *ieee)
105{
106 struct rt_dot11d_info *pDot11dInfo = GET_DOT11D_INFO(ieee);
107 u32 i;
108
109 memset(pDot11dInfo->channel_map, 0, MAX_CHANNEL_NUMBER+1);
110 memset(pDot11dInfo->MaxTxPwrDbmList, 0xFF, MAX_CHANNEL_NUMBER+1);
111 for (i = 1; i <= 11; i++)
112 (pDot11dInfo->channel_map)[i] = 1;
113 for (i = 12; i <= 14; i++)
114 (pDot11dInfo->channel_map)[i] = 2;
115 pDot11dInfo->State = DOT11D_STATE_NONE;
116 pDot11dInfo->CountryIeLen = 0;
117 RESET_CIE_WATCHDOG(ieee);
118}
119
120void Dot11d_UpdateCountryIe(struct rtllib_device *dev, u8 *pTaddr,
121 u16 CoutryIeLen, u8 *pCoutryIe)
122{
123 struct rt_dot11d_info *pDot11dInfo = GET_DOT11D_INFO(dev);
124 u8 i, j, NumTriples, MaxChnlNum;
125 struct chnl_txpow_triple *pTriple;
126
127 memset(pDot11dInfo->channel_map, 0, MAX_CHANNEL_NUMBER+1);
128 memset(pDot11dInfo->MaxTxPwrDbmList, 0xFF, MAX_CHANNEL_NUMBER+1);
129 MaxChnlNum = 0;
130 NumTriples = (CoutryIeLen - 3) / 3;
131 pTriple = (struct chnl_txpow_triple *)(pCoutryIe + 3);
132 for (i = 0; i < NumTriples; i++) {
133 if (MaxChnlNum >= pTriple->FirstChnl) {
134 printk(KERN_INFO "Dot11d_UpdateCountryIe(): Invalid"
135 " country IE, skip it........1\n");
136 return;
137 }
138 if (MAX_CHANNEL_NUMBER < (pTriple->FirstChnl +
139 pTriple->NumChnls)) {
140 printk(KERN_INFO "Dot11d_UpdateCountryIe(): Invalid "
141 "country IE, skip it........2\n");
142 return;
143 }
144
145 for (j = 0 ; j < pTriple->NumChnls; j++) {
146 pDot11dInfo->channel_map[pTriple->FirstChnl + j] = 1;
147 pDot11dInfo->MaxTxPwrDbmList[pTriple->FirstChnl + j] =
148 pTriple->MaxTxPowerInDbm;
149 MaxChnlNum = pTriple->FirstChnl + j;
150 }
151
152 pTriple = (struct chnl_txpow_triple *)((u8*)pTriple + 3);
153 }
154
155 UPDATE_CIE_SRC(dev, pTaddr);
156
157 pDot11dInfo->CountryIeLen = CoutryIeLen;
158 memcpy(pDot11dInfo->CountryIeBuf, pCoutryIe, CoutryIeLen);
159 pDot11dInfo->State = DOT11D_STATE_LEARNED;
160}
161
162u8 DOT11D_GetMaxTxPwrInDbm(struct rtllib_device *dev, u8 Channel)
163{
164 struct rt_dot11d_info *pDot11dInfo = GET_DOT11D_INFO(dev);
165 u8 MaxTxPwrInDbm = 255;
166
167 if (MAX_CHANNEL_NUMBER < Channel) {
168 printk(KERN_INFO "DOT11D_GetMaxTxPwrInDbm(): Invalid "
169 "Channel\n");
170 return MaxTxPwrInDbm;
171 }
172 if (pDot11dInfo->channel_map[Channel])
173 MaxTxPwrInDbm = pDot11dInfo->MaxTxPwrDbmList[Channel];
174
175 return MaxTxPwrInDbm;
176}
177
178void 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
194int 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 printk(KERN_ERR "%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}