1 // SPDX-License-Identifier: GPL-2.0
2 /* Implement 802.11d. */
6 void Dot11d_Init(struct ieee80211_device *ieee)
8 PRT_DOT11D_INFO pDot11dInfo = GET_DOT11D_INFO(ieee);
10 pDot11dInfo->bEnabled = false;
12 pDot11dInfo->State = DOT11D_STATE_NONE;
13 pDot11dInfo->CountryIeLen = 0;
14 memset(pDot11dInfo->channel_map, 0, MAX_CHANNEL_NUMBER+1);
15 memset(pDot11dInfo->MaxTxPwrDbmList, 0xFF, MAX_CHANNEL_NUMBER+1);
16 RESET_CIE_WATCHDOG(ieee);
18 netdev_info(ieee->dev, "Dot11d_Init()\n");
20 EXPORT_SYMBOL(Dot11d_Init);
22 /* Reset to the state as we are just entering a regulatory domain. */
23 void Dot11d_Reset(struct ieee80211_device *ieee)
26 PRT_DOT11D_INFO pDot11dInfo = GET_DOT11D_INFO(ieee);
27 /* Clear old channel map */
28 memset(pDot11dInfo->channel_map, 0, MAX_CHANNEL_NUMBER+1);
29 memset(pDot11dInfo->MaxTxPwrDbmList, 0xFF, MAX_CHANNEL_NUMBER+1);
30 /* Set new channel map */
31 for (i = 1; i <= 11; i++)
32 (pDot11dInfo->channel_map)[i] = 1;
34 for (i = 12; i <= 14; i++)
35 (pDot11dInfo->channel_map)[i] = 2;
37 pDot11dInfo->State = DOT11D_STATE_NONE;
38 pDot11dInfo->CountryIeLen = 0;
39 RESET_CIE_WATCHDOG(ieee);
41 EXPORT_SYMBOL(Dot11d_Reset);
44 * Update country IE from Beacon or Probe Resopnse and configure PHY for
45 * operation in the regulatory domain.
47 * TODO: Configure Tx power.
49 * 1. IS_DOT11D_ENABLE() is TRUE.
50 * 2. Input IE is an valid one.
52 void Dot11d_UpdateCountryIe(struct ieee80211_device *dev, u8 *pTaddr,
53 u16 CoutryIeLen, u8 *pCoutryIe)
55 PRT_DOT11D_INFO pDot11dInfo = GET_DOT11D_INFO(dev);
56 u8 i, j, NumTriples, MaxChnlNum;
57 PCHNL_TXPOWER_TRIPLE pTriple;
59 memset(pDot11dInfo->channel_map, 0, MAX_CHANNEL_NUMBER+1);
60 memset(pDot11dInfo->MaxTxPwrDbmList, 0xFF, MAX_CHANNEL_NUMBER+1);
62 NumTriples = (CoutryIeLen - 3) / 3; /* skip 3-byte country string. */
63 pTriple = (PCHNL_TXPOWER_TRIPLE)(pCoutryIe + 3);
64 for (i = 0; i < NumTriples; i++) {
65 if (MaxChnlNum >= pTriple->FirstChnl) {
66 /* It is not in a monotonically increasing order, so
69 netdev_err(dev->dev, "Dot11d_UpdateCountryIe(): Invalid country IE, skip it........1\n");
72 if (MAX_CHANNEL_NUMBER < (pTriple->FirstChnl + pTriple->NumChnls)) {
73 /* It is not a valid set of channel id, so stop
76 netdev_err(dev->dev, "Dot11d_UpdateCountryIe(): Invalid country IE, skip it........2\n");
80 for (j = 0; j < pTriple->NumChnls; j++) {
81 pDot11dInfo->channel_map[pTriple->FirstChnl + j] = 1;
82 pDot11dInfo->MaxTxPwrDbmList[pTriple->FirstChnl + j] = pTriple->MaxTxPowerInDbm;
83 MaxChnlNum = pTriple->FirstChnl + j;
86 pTriple = (PCHNL_TXPOWER_TRIPLE)((u8 *)pTriple + 3);
88 netdev_info(dev->dev, "Channel List:");
89 for (i = 1; i <= MAX_CHANNEL_NUMBER; i++)
90 if (pDot11dInfo->channel_map[i] > 0)
91 netdev_info(dev->dev, " %d", i);
92 netdev_info(dev->dev, "\n");
94 UPDATE_CIE_SRC(dev, pTaddr);
96 pDot11dInfo->CountryIeLen = CoutryIeLen;
97 memcpy(pDot11dInfo->CountryIeBuf, pCoutryIe, CoutryIeLen);
98 pDot11dInfo->State = DOT11D_STATE_LEARNED;
100 EXPORT_SYMBOL(Dot11d_UpdateCountryIe);
102 u8 DOT11D_GetMaxTxPwrInDbm(struct ieee80211_device *dev, u8 Channel)
104 PRT_DOT11D_INFO pDot11dInfo = GET_DOT11D_INFO(dev);
105 u8 MaxTxPwrInDbm = 255;
107 if (Channel > MAX_CHANNEL_NUMBER) {
108 netdev_err(dev->dev, "DOT11D_GetMaxTxPwrInDbm(): Invalid Channel\n");
109 return MaxTxPwrInDbm;
111 if (pDot11dInfo->channel_map[Channel])
112 MaxTxPwrInDbm = pDot11dInfo->MaxTxPwrDbmList[Channel];
114 return MaxTxPwrInDbm;
116 EXPORT_SYMBOL(DOT11D_GetMaxTxPwrInDbm);
118 void DOT11D_ScanComplete(struct ieee80211_device *dev)
120 PRT_DOT11D_INFO pDot11dInfo = GET_DOT11D_INFO(dev);
122 switch (pDot11dInfo->State) {
123 case DOT11D_STATE_LEARNED:
124 pDot11dInfo->State = DOT11D_STATE_DONE;
127 case DOT11D_STATE_DONE:
128 if (GET_CIE_WATCHDOG(dev) == 0) {
129 /* Reset country IE if previous one is gone. */
133 case DOT11D_STATE_NONE:
137 EXPORT_SYMBOL(DOT11D_ScanComplete);
139 int IsLegalChannel(struct ieee80211_device *dev, u8 channel)
141 PRT_DOT11D_INFO pDot11dInfo = GET_DOT11D_INFO(dev);
143 if (channel > MAX_CHANNEL_NUMBER) {
144 netdev_err(dev->dev, "IsLegalChannel(): Invalid Channel\n");
147 if (pDot11dInfo->channel_map[channel] > 0)
151 EXPORT_SYMBOL(IsLegalChannel);
153 int ToLegalChannel(struct ieee80211_device *dev, u8 channel)
155 PRT_DOT11D_INFO pDot11dInfo = GET_DOT11D_INFO(dev);
159 for (i = 1; i <= MAX_CHANNEL_NUMBER; i++) {
160 if (pDot11dInfo->channel_map[i] > 0) {
166 if (channel > MAX_CHANNEL_NUMBER) {
167 netdev_err(dev->dev, "IsLegalChannel(): Invalid Channel\n");
171 if (pDot11dInfo->channel_map[channel] > 0)
176 EXPORT_SYMBOL(ToLegalChannel);