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1 | #ifndef __NET_WIRELESS_REG_H |
2 | #define __NET_WIRELESS_REG_H |
3 | |
4 | extern const struct ieee80211_regdomain *cfg80211_regdomain; |
5 | |
6 | bool is_world_regdom(const char *alpha2); |
7 | bool reg_is_valid_request(const char *alpha2); |
8 | |
9 | int regulatory_hint_user(const char *alpha2); |
10 | |
11 | void reg_device_remove(struct wiphy *wiphy); |
12 | |
13 | int regulatory_init(void); |
14 | void regulatory_exit(void); |
15 | |
16 | int set_regdom(const struct ieee80211_regdomain *rd); |
17 | |
18 | /** |
19 | * regulatory_hint_found_beacon - hints a beacon was found on a channel |
20 | * @wiphy: the wireless device where the beacon was found on |
21 | * @beacon_chan: the channel on which the beacon was found on |
22 | * @gfp: context flags |
23 | * |
24 | * This informs the wireless core that a beacon from an AP was found on |
25 | * the channel provided. This allows the wireless core to make educated |
26 | * guesses on regulatory to help with world roaming. This is only used for |
27 | * world roaming -- when we do not know our current location. This is |
28 | * only useful on channels 12, 13 and 14 on the 2 GHz band as channels |
29 | * 1-11 are already enabled by the world regulatory domain; and on |
30 | * non-radar 5 GHz channels. |
31 | * |
32 | * Drivers do not need to call this, cfg80211 will do it for after a scan |
33 | * on a newly found BSS. If you cannot make use of this feature you can |
34 | * set the wiphy->disable_beacon_hints to true. |
35 | */ |
36 | int regulatory_hint_found_beacon(struct wiphy *wiphy, |
37 | struct ieee80211_channel *beacon_chan, |
38 | gfp_t gfp); |
39 | |
40 | /** |
41 | * regulatory_hint_11d - hints a country IE as a regulatory domain |
42 | * @wiphy: the wireless device giving the hint (used only for reporting |
43 | * conflicts) |
44 | * @band: the band on which the country IE was received on. This determines |
45 | * the band we'll process the country IE channel triplets for. |
46 | * @country_ie: pointer to the country IE |
47 | * @country_ie_len: length of the country IE |
48 | * |
49 | * We will intersect the rd with the what CRDA tells us should apply |
50 | * for the alpha2 this country IE belongs to, this prevents APs from |
51 | * sending us incorrect or outdated information against a country. |
52 | * |
53 | * The AP is expected to provide Country IE channel triplets for the |
54 | * band it is on. It is technically possible for APs to send channel |
55 | * country IE triplets even for channels outside of the band they are |
56 | * in but for that they would have to use the regulatory extension |
57 | * in combination with a triplet but this behaviour is currently |
58 | * not observed. For this reason if a triplet is seen with channel |
59 | * information for a band the BSS is not present in it will be ignored. |
60 | */ |
61 | void regulatory_hint_11d(struct wiphy *wiphy, |
62 | enum ieee80211_band band, |
63 | u8 *country_ie, |
64 | u8 country_ie_len); |
65 | |
66 | /** |
67 | * regulatory_hint_disconnect - informs all devices have been disconneted |
68 | * |
69 | * Regulotory rules can be enhanced further upon scanning and upon |
70 | * connection to an AP. These rules become stale if we disconnect |
71 | * and go to another country, whether or not we suspend and resume. |
72 | * If we suspend, go to another country and resume we'll automatically |
73 | * get disconnected shortly after resuming and things will be reset as well. |
74 | * This routine is a helper to restore regulatory settings to how they were |
75 | * prior to our first connect attempt. This includes ignoring country IE and |
76 | * beacon regulatory hints. The ieee80211_regdom module parameter will always |
77 | * be respected but if a user had set the regulatory domain that will take |
78 | * precedence. |
79 | * |
80 | * Must be called from process context. |
81 | */ |
82 | void regulatory_hint_disconnect(void); |
83 | |
84 | #endif /* __NET_WIRELESS_REG_H */ |
85 |
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