reg.h 4.3 KB

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  1. #ifndef __NET_WIRELESS_REG_H
  2. #define __NET_WIRELESS_REG_H
  3. /*
  4. * Copyright 2008-2011 Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
  5. *
  6. * Permission to use, copy, modify, and/or distribute this software for any
  7. * purpose with or without fee is hereby granted, provided that the above
  8. * copyright notice and this permission notice appear in all copies.
  9. *
  10. * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11. * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12. * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13. * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14. * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  15. * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16. * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17. */
  18. extern const struct ieee80211_regdomain *cfg80211_regdomain;
  19. bool is_world_regdom(const char *alpha2);
  20. bool reg_is_valid_request(const char *alpha2);
  21. bool reg_supported_dfs_region(u8 dfs_region);
  22. int reg_device_uevent(struct device *dev, struct kobj_uevent_env *env);
  23. void reg_device_remove(struct wiphy *wiphy);
  24. int __init regulatory_init(void);
  25. void regulatory_exit(void);
  26. int set_regdom(const struct ieee80211_regdomain *rd);
  27. void regulatory_update(struct wiphy *wiphy, enum nl80211_reg_initiator setby);
  28. /**
  29. * regulatory_hint_found_beacon - hints a beacon was found on a channel
  30. * @wiphy: the wireless device where the beacon was found on
  31. * @beacon_chan: the channel on which the beacon was found on
  32. * @gfp: context flags
  33. *
  34. * This informs the wireless core that a beacon from an AP was found on
  35. * the channel provided. This allows the wireless core to make educated
  36. * guesses on regulatory to help with world roaming. This is only used for
  37. * world roaming -- when we do not know our current location. This is
  38. * only useful on channels 12, 13 and 14 on the 2 GHz band as channels
  39. * 1-11 are already enabled by the world regulatory domain; and on
  40. * non-radar 5 GHz channels.
  41. *
  42. * Drivers do not need to call this, cfg80211 will do it for after a scan
  43. * on a newly found BSS. If you cannot make use of this feature you can
  44. * set the wiphy->disable_beacon_hints to true.
  45. */
  46. int regulatory_hint_found_beacon(struct wiphy *wiphy,
  47. struct ieee80211_channel *beacon_chan,
  48. gfp_t gfp);
  49. /**
  50. * regulatory_hint_11d - hints a country IE as a regulatory domain
  51. * @wiphy: the wireless device giving the hint (used only for reporting
  52. * conflicts)
  53. * @band: the band on which the country IE was received on. This determines
  54. * the band we'll process the country IE channel triplets for.
  55. * @country_ie: pointer to the country IE
  56. * @country_ie_len: length of the country IE
  57. *
  58. * We will intersect the rd with the what CRDA tells us should apply
  59. * for the alpha2 this country IE belongs to, this prevents APs from
  60. * sending us incorrect or outdated information against a country.
  61. *
  62. * The AP is expected to provide Country IE channel triplets for the
  63. * band it is on. It is technically possible for APs to send channel
  64. * country IE triplets even for channels outside of the band they are
  65. * in but for that they would have to use the regulatory extension
  66. * in combination with a triplet but this behaviour is currently
  67. * not observed. For this reason if a triplet is seen with channel
  68. * information for a band the BSS is not present in it will be ignored.
  69. */
  70. void regulatory_hint_11d(struct wiphy *wiphy,
  71. enum ieee80211_band band,
  72. u8 *country_ie,
  73. u8 country_ie_len);
  74. /**
  75. * regulatory_hint_disconnect - informs all devices have been disconneted
  76. *
  77. * Regulotory rules can be enhanced further upon scanning and upon
  78. * connection to an AP. These rules become stale if we disconnect
  79. * and go to another country, whether or not we suspend and resume.
  80. * If we suspend, go to another country and resume we'll automatically
  81. * get disconnected shortly after resuming and things will be reset as well.
  82. * This routine is a helper to restore regulatory settings to how they were
  83. * prior to our first connect attempt. This includes ignoring country IE and
  84. * beacon regulatory hints. The ieee80211_regdom module parameter will always
  85. * be respected but if a user had set the regulatory domain that will take
  86. * precedence.
  87. *
  88. * Must be called from process context.
  89. */
  90. void regulatory_hint_disconnect(void);
  91. #endif /* __NET_WIRELESS_REG_H */