1 | #ifndef __NET_WIRELESS_REG_H |
2 | #define __NET_WIRELESS_REG_H |
3 | |
4 | #include <net/cfg80211.h> |
5 | |
6 | /* |
7 | * Copyright 2008-2011 Luis R. Rodriguez <mcgrof@qca.qualcomm.com> |
8 | * Copyright (C) 2019, 2023 Intel Corporation |
9 | * |
10 | * Permission to use, copy, modify, and/or distribute this software for any |
11 | * purpose with or without fee is hereby granted, provided that the above |
12 | * copyright notice and this permission notice appear in all copies. |
13 | * |
14 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
15 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
16 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
17 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
18 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
19 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
20 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
21 | */ |
22 | |
23 | enum ieee80211_regd_source { |
24 | REGD_SOURCE_INTERNAL_DB, |
25 | REGD_SOURCE_CRDA, |
26 | REGD_SOURCE_CACHED, |
27 | }; |
28 | |
29 | extern const struct ieee80211_regdomain __rcu *cfg80211_regdomain; |
30 | |
31 | bool reg_is_valid_request(const char *alpha2); |
32 | bool is_world_regdom(const char *alpha2); |
33 | bool reg_supported_dfs_region(enum nl80211_dfs_regions dfs_region); |
34 | enum nl80211_dfs_regions reg_get_dfs_region(struct wiphy *wiphy); |
35 | |
36 | int regulatory_hint_user(const char *alpha2, |
37 | enum nl80211_user_reg_hint_type user_reg_hint_type); |
38 | |
39 | /** |
40 | * regulatory_hint_indoor - hint operation in indoor env. or not |
41 | * @is_indoor: if true indicates that user space thinks that the |
42 | * device is operating in an indoor environment. |
43 | * @portid: the netlink port ID on which the hint was given. |
44 | */ |
45 | int regulatory_hint_indoor(bool is_indoor, u32 portid); |
46 | |
47 | /** |
48 | * regulatory_netlink_notify - notify on released netlink socket |
49 | * @portid: the netlink socket port ID |
50 | */ |
51 | void regulatory_netlink_notify(u32 portid); |
52 | |
53 | void wiphy_regulatory_register(struct wiphy *wiphy); |
54 | void wiphy_regulatory_deregister(struct wiphy *wiphy); |
55 | |
56 | int __init regulatory_init(void); |
57 | void regulatory_exit(void); |
58 | |
59 | int set_regdom(const struct ieee80211_regdomain *rd, |
60 | enum ieee80211_regd_source regd_src); |
61 | |
62 | unsigned int reg_get_max_bandwidth(const struct ieee80211_regdomain *rd, |
63 | const struct ieee80211_reg_rule *rule); |
64 | |
65 | bool reg_last_request_cell_base(void); |
66 | |
67 | /** |
68 | * regulatory_hint_found_beacon - hints a beacon was found on a channel |
69 | * @wiphy: the wireless device where the beacon was found on |
70 | * @beacon_chan: the channel on which the beacon was found on |
71 | * @gfp: context flags |
72 | * |
73 | * This informs the wireless core that a beacon from an AP was found on |
74 | * the channel provided. This allows the wireless core to make educated |
75 | * guesses on regulatory to help with world roaming. This is only used for |
76 | * world roaming -- when we do not know our current location. This is |
77 | * only useful on channels 12, 13 and 14 on the 2 GHz band as channels |
78 | * 1-11 are already enabled by the world regulatory domain; and on |
79 | * non-radar 5 GHz channels. |
80 | * |
81 | * Drivers do not need to call this, cfg80211 will do it for after a scan |
82 | * on a newly found BSS. If you cannot make use of this feature you can |
83 | * set the wiphy->disable_beacon_hints to true. |
84 | */ |
85 | int regulatory_hint_found_beacon(struct wiphy *wiphy, |
86 | struct ieee80211_channel *beacon_chan, |
87 | gfp_t gfp); |
88 | |
89 | /** |
90 | * regulatory_hint_country_ie - hints a country IE as a regulatory domain |
91 | * @wiphy: the wireless device giving the hint (used only for reporting |
92 | * conflicts) |
93 | * @band: the band on which the country IE was received on. This determines |
94 | * the band we'll process the country IE channel triplets for. |
95 | * @country_ie: pointer to the country IE |
96 | * @country_ie_len: length of the country IE |
97 | * |
98 | * We will intersect the rd with the what CRDA tells us should apply |
99 | * for the alpha2 this country IE belongs to, this prevents APs from |
100 | * sending us incorrect or outdated information against a country. |
101 | * |
102 | * The AP is expected to provide Country IE channel triplets for the |
103 | * band it is on. It is technically possible for APs to send channel |
104 | * country IE triplets even for channels outside of the band they are |
105 | * in but for that they would have to use the regulatory extension |
106 | * in combination with a triplet but this behaviour is currently |
107 | * not observed. For this reason if a triplet is seen with channel |
108 | * information for a band the BSS is not present in it will be ignored. |
109 | */ |
110 | void regulatory_hint_country_ie(struct wiphy *wiphy, |
111 | enum nl80211_band band, |
112 | const u8 *country_ie, |
113 | u8 country_ie_len); |
114 | |
115 | /** |
116 | * regulatory_hint_disconnect - informs all devices have been disconnected |
117 | * |
118 | * Regulotory rules can be enhanced further upon scanning and upon |
119 | * connection to an AP. These rules become stale if we disconnect |
120 | * and go to another country, whether or not we suspend and resume. |
121 | * If we suspend, go to another country and resume we'll automatically |
122 | * get disconnected shortly after resuming and things will be reset as well. |
123 | * This routine is a helper to restore regulatory settings to how they were |
124 | * prior to our first connect attempt. This includes ignoring country IE and |
125 | * beacon regulatory hints. The ieee80211_regdom module parameter will always |
126 | * be respected but if a user had set the regulatory domain that will take |
127 | * precedence. |
128 | * |
129 | * Must be called from process context. |
130 | */ |
131 | void regulatory_hint_disconnect(void); |
132 | |
133 | /** |
134 | * cfg80211_get_unii - get the U-NII band for the frequency |
135 | * @freq: the frequency for which we want to get the UNII band. |
136 | * |
137 | * Get a value specifying the U-NII band frequency belongs to. |
138 | * U-NII bands are defined by the FCC in C.F.R 47 part 15. |
139 | * |
140 | * Returns -EINVAL if freq is invalid, 0 for UNII-1, 1 for UNII-2A, |
141 | * 2 for UNII-2B, 3 for UNII-2C and 4 for UNII-3. |
142 | */ |
143 | int cfg80211_get_unii(int freq); |
144 | |
145 | /** |
146 | * regulatory_indoor_allowed - is indoor operation allowed |
147 | */ |
148 | bool regulatory_indoor_allowed(void); |
149 | |
150 | /* |
151 | * Grace period to timeout pre-CAC results on the dfs channels. This timeout |
152 | * value is used for Non-ETSI domain. |
153 | * TODO: May be make this timeout available through regdb? |
154 | */ |
155 | #define REG_PRE_CAC_EXPIRY_GRACE_MS 2000 |
156 | |
157 | /** |
158 | * regulatory_propagate_dfs_state - Propagate DFS channel state to other wiphys |
159 | * @wiphy: wiphy on which radar is detected and the event will be propagated |
160 | * to other available wiphys having the same DFS domain |
161 | * @chandef: Channel definition of radar detected channel |
162 | * @dfs_state: DFS channel state to be set |
163 | * @event: Type of radar event which triggered this DFS state change |
164 | * |
165 | * This function should be called with rtnl lock held. |
166 | */ |
167 | void regulatory_propagate_dfs_state(struct wiphy *wiphy, |
168 | struct cfg80211_chan_def *chandef, |
169 | enum nl80211_dfs_state dfs_state, |
170 | enum nl80211_radar_event event); |
171 | |
172 | /** |
173 | * reg_dfs_domain_same - Checks if both wiphy have same DFS domain configured |
174 | * @wiphy1: wiphy it's dfs_region to be checked against that of wiphy2 |
175 | * @wiphy2: wiphy it's dfs_region to be checked against that of wiphy1 |
176 | */ |
177 | bool reg_dfs_domain_same(struct wiphy *wiphy1, struct wiphy *wiphy2); |
178 | |
179 | /** |
180 | * reg_reload_regdb - reload the regulatory.db firmware file |
181 | */ |
182 | int reg_reload_regdb(void); |
183 | |
184 | /** |
185 | * reg_check_channels - schedule regulatory enforcement |
186 | */ |
187 | void reg_check_channels(void); |
188 | |
189 | extern const u8 shipped_regdb_certs[]; |
190 | extern unsigned int shipped_regdb_certs_len; |
191 | extern const u8 []; |
192 | extern unsigned int ; |
193 | |
194 | #endif /* __NET_WIRELESS_REG_H */ |
195 | |