bss.h 3.6 KB

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  1. /*
  2. * BSS table
  3. * Copyright (c) 2009-2010, Jouni Malinen <j@w1.fi>
  4. *
  5. * This program is free software; you can redistribute it and/or modify
  6. * it under the terms of the GNU General Public License version 2 as
  7. * published by the Free Software Foundation.
  8. *
  9. * Alternatively, this software may be distributed under the terms of BSD
  10. * license.
  11. *
  12. * See README and COPYING for more details.
  13. */
  14. #ifndef BSS_H
  15. #define BSS_H
  16. struct wpa_scan_res;
  17. #define WPA_BSS_QUAL_INVALID BIT(0)
  18. #define WPA_BSS_NOISE_INVALID BIT(1)
  19. #define WPA_BSS_LEVEL_INVALID BIT(2)
  20. #define WPA_BSS_LEVEL_DBM BIT(3)
  21. #define WPA_BSS_AUTHENTICATED BIT(4)
  22. #define WPA_BSS_ASSOCIATED BIT(5)
  23. #define WPA_BSS_ANQP_FETCH_TRIED BIT(6)
  24. /**
  25. * struct wpa_bss - BSS table
  26. * @list: List entry for struct wpa_supplicant::bss
  27. * @list_id: List entry for struct wpa_supplicant::bss_id
  28. * @id: Unique identifier for this BSS entry
  29. * @scan_miss_count: Number of counts without seeing this BSS
  30. * @flags: information flags about the BSS/IBSS (WPA_BSS_*)
  31. * @last_update_idx: Index of the last scan update
  32. * @bssid: BSSID
  33. * @freq: frequency of the channel in MHz (e.g., 2412 = channel 1)
  34. * @beacon_int: beacon interval in TUs (host byte order)
  35. * @caps: capability information field in host byte order
  36. * @qual: signal quality
  37. * @noise: noise level
  38. * @level: signal level
  39. * @tsf: Timestamp of last Beacon/Probe Response frame
  40. * @last_update: Time of the last update (i.e., Beacon or Probe Response RX)
  41. * @ie_len: length of the following IE field in octets (from Probe Response)
  42. * @beacon_ie_len: length of the following Beacon IE field in octets
  43. *
  44. * This structure is used to store information about neighboring BSSes in
  45. * generic format. It is mainly updated based on scan results from the driver.
  46. */
  47. struct wpa_bss {
  48. struct dl_list list;
  49. struct dl_list list_id;
  50. unsigned int id;
  51. unsigned int scan_miss_count;
  52. unsigned int last_update_idx;
  53. unsigned int flags;
  54. u8 bssid[ETH_ALEN];
  55. u8 ssid[32];
  56. size_t ssid_len;
  57. int freq;
  58. u16 beacon_int;
  59. u16 caps;
  60. int qual;
  61. int noise;
  62. int level;
  63. u64 tsf;
  64. struct os_time last_update;
  65. #ifdef CONFIG_INTERWORKING
  66. struct wpabuf *anqp_venue_name;
  67. struct wpabuf *anqp_network_auth_type;
  68. struct wpabuf *anqp_roaming_consortium;
  69. struct wpabuf *anqp_ip_addr_type_availability;
  70. struct wpabuf *anqp_nai_realm;
  71. struct wpabuf *anqp_3gpp;
  72. struct wpabuf *anqp_domain_name;
  73. #endif /* CONFIG_INTERWORKING */
  74. size_t ie_len;
  75. size_t beacon_ie_len;
  76. /* followed by ie_len octets of IEs */
  77. /* followed by beacon_ie_len octets of IEs */
  78. };
  79. void wpa_bss_update_start(struct wpa_supplicant *wpa_s);
  80. void wpa_bss_update_scan_res(struct wpa_supplicant *wpa_s,
  81. struct wpa_scan_res *res);
  82. void wpa_bss_update_end(struct wpa_supplicant *wpa_s, struct scan_info *info,
  83. int new_scan);
  84. int wpa_bss_init(struct wpa_supplicant *wpa_s);
  85. void wpa_bss_deinit(struct wpa_supplicant *wpa_s);
  86. void wpa_bss_flush(struct wpa_supplicant *wpa_s);
  87. void wpa_bss_flush_by_age(struct wpa_supplicant *wpa_s, int age);
  88. struct wpa_bss * wpa_bss_get(struct wpa_supplicant *wpa_s, const u8 *bssid,
  89. const u8 *ssid, size_t ssid_len);
  90. struct wpa_bss * wpa_bss_get_bssid(struct wpa_supplicant *wpa_s,
  91. const u8 *bssid);
  92. struct wpa_bss * wpa_bss_get_id(struct wpa_supplicant *wpa_s, unsigned int id);
  93. const u8 * wpa_bss_get_ie(const struct wpa_bss *bss, u8 ie);
  94. const u8 * wpa_bss_get_vendor_ie(const struct wpa_bss *bss, u32 vendor_type);
  95. struct wpabuf * wpa_bss_get_vendor_ie_multi(const struct wpa_bss *bss,
  96. u32 vendor_type);
  97. int wpa_bss_get_max_rate(const struct wpa_bss *bss);
  98. int wpa_bss_get_bit_rates(const struct wpa_bss *bss, u8 **rates);
  99. #endif /* BSS_H */