reg.h 7.2 KB

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