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hostapd/wpa_supplicant/bss.h
Andrei Otcheretianski de5e01010c wpa_supplicant: Support ML probe request 
Add support for building and sending ML probe requests. During connect,
try to send an ML probe request if we are going to connect to an MLD AP
and the BSS information for some of the links is missing.

Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
2023-10-29 15:48:53 +02:00

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/*
* BSS table
* Copyright (c) 2009-2019, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#ifndef BSS_H
#define BSS_H
struct wpa_scan_res;
#define WPA_BSS_QUAL_INVALID BIT(0)
#define WPA_BSS_NOISE_INVALID BIT(1)
#define WPA_BSS_LEVEL_INVALID BIT(2)
#define WPA_BSS_LEVEL_DBM BIT(3)
#define WPA_BSS_AUTHENTICATED BIT(4)
#define WPA_BSS_ASSOCIATED BIT(5)
#define WPA_BSS_ANQP_FETCH_TRIED BIT(6)
#define WPA_BSS_OWE_TRANSITION BIT(7)
#define WPA_BSS_FREQ_CHANGED_FLAG BIT(0)
#define WPA_BSS_SIGNAL_CHANGED_FLAG BIT(1)
#define WPA_BSS_PRIVACY_CHANGED_FLAG BIT(2)
#define WPA_BSS_MODE_CHANGED_FLAG BIT(3)
#define WPA_BSS_WPAIE_CHANGED_FLAG BIT(4)
#define WPA_BSS_RSNIE_CHANGED_FLAG BIT(5)
#define WPA_BSS_WPS_CHANGED_FLAG BIT(6)
#define WPA_BSS_RATES_CHANGED_FLAG BIT(7)
#define WPA_BSS_IES_CHANGED_FLAG BIT(8)
struct wpa_bss_anqp_elem {
struct dl_list list;
u16 infoid;
bool protected_response; /* received in a protected GAS response */
struct wpabuf *payload;
};
/**
* struct wpa_bss_anqp - ANQP data for a BSS entry (struct wpa_bss)
*/
struct wpa_bss_anqp {
/** Number of BSS entries referring to this ANQP data instance */
unsigned int users;
#ifdef CONFIG_INTERWORKING
struct wpabuf *capability_list;
struct wpabuf *venue_name;
struct wpabuf *network_auth_type;
struct wpabuf *roaming_consortium;
struct wpabuf *ip_addr_type_availability;
struct wpabuf *nai_realm;
struct wpabuf *anqp_3gpp;
struct wpabuf *domain_name;
struct wpabuf *fils_realm_info;
struct dl_list anqp_elems; /* list of struct wpa_bss_anqp_elem */
#endif /* CONFIG_INTERWORKING */
#ifdef CONFIG_HS20
struct wpabuf *hs20_capability_list;
struct wpabuf *hs20_operator_friendly_name;
struct wpabuf *hs20_wan_metrics;
struct wpabuf *hs20_connection_capability;
struct wpabuf *hs20_operating_class;
struct wpabuf *hs20_osu_providers_list;
struct wpabuf *hs20_operator_icon_metadata;
struct wpabuf *hs20_osu_providers_nai_list;
#endif /* CONFIG_HS20 */
};
/**
* struct wpa_bss - BSS table
*
* This structure is used to store information about neighboring BSSes in
* generic format. It is mainly updated based on scan results from the driver.
*/
struct wpa_bss {
/** List entry for struct wpa_supplicant::bss */
struct dl_list list;
/** List entry for struct wpa_supplicant::bss_id */
struct dl_list list_id;
/** Unique identifier for this BSS entry */
unsigned int id;
/** Number of counts without seeing this BSS */
unsigned int scan_miss_count;
/** Index of the last scan update */
unsigned int last_update_idx;
/** Information flags about the BSS/IBSS (WPA_BSS_*) */
unsigned int flags;
/** BSSID */
u8 bssid[ETH_ALEN];
/** HESSID */
u8 hessid[ETH_ALEN];
/** SSID */
u8 ssid[SSID_MAX_LEN];
/** Length of SSID */
size_t ssid_len;
/** Frequency of the channel in MHz (e.g., 2412 = channel 1) */
int freq;
/** Beacon interval in TUs (host byte order) */
u16 beacon_int;
/** Capability information field in host byte order */
u16 caps;
/** Signal quality */
int qual;
/** Noise level */
int noise;
/** Signal level */
int level;
/** Timestamp of last Beacon/Probe Response frame */
u64 tsf;
/** Whether the Beacon frame data is known to be newer */
bool beacon_newer;
/** Time of the last update (i.e., Beacon or Probe Response RX) */
struct os_reltime last_update;
/** Estimated throughput in kbps */
unsigned int est_throughput;
/** Signal-to-noise ratio in dB */
int snr;
/** ANQP data */
struct wpa_bss_anqp *anqp;
/** Length of the following IE field in octets (from Probe Response) */
size_t ie_len;
/** Length of the following Beacon IE field in octets */
size_t beacon_ie_len;
/** MLD address of the AP */
u8 mld_addr[ETH_ALEN];
/** An array of MLD links */
u8 n_mld_links;
struct mld_link {
u8 link_id;
u8 bssid[ETH_ALEN];
int freq;
} mld_links[MAX_NUM_MLD_LINKS];
/* followed by ie_len octets of IEs */
/* followed by beacon_ie_len octets of IEs */
u8 ies[];
};
static inline const u8 * wpa_bss_ie_ptr(const struct wpa_bss *bss)
{
return bss->ies;
}
void notify_bss_changes(struct wpa_supplicant *wpa_s, u32 changes,
const struct wpa_bss *bss);
void wpa_bss_update_start(struct wpa_supplicant *wpa_s);
void wpa_bss_update_scan_res(struct wpa_supplicant *wpa_s,
struct wpa_scan_res *res,
struct os_reltime *fetch_time);
void wpa_bss_remove(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
const char *reason);
void wpa_bss_update_end(struct wpa_supplicant *wpa_s, struct scan_info *info,
int new_scan);
int wpa_bss_init(struct wpa_supplicant *wpa_s);
void wpa_bss_deinit(struct wpa_supplicant *wpa_s);
void wpa_bss_flush(struct wpa_supplicant *wpa_s);
void wpa_bss_flush_by_age(struct wpa_supplicant *wpa_s, int age);
struct wpa_bss * wpa_bss_get(struct wpa_supplicant *wpa_s, const u8 *bssid,
const u8 *ssid, size_t ssid_len);
struct wpa_bss * wpa_bss_get_bssid(struct wpa_supplicant *wpa_s,
const u8 *bssid);
struct wpa_bss * wpa_bss_get_bssid_latest(struct wpa_supplicant *wpa_s,
const u8 *bssid);
struct wpa_bss * wpa_bss_get_p2p_dev_addr(struct wpa_supplicant *wpa_s,
const u8 *dev_addr);
struct wpa_bss * wpa_bss_get_id(struct wpa_supplicant *wpa_s, unsigned int id);
struct wpa_bss * wpa_bss_get_id_range(struct wpa_supplicant *wpa_s,
unsigned int idf, unsigned int idl);
const u8 * wpa_bss_get_ie(const struct wpa_bss *bss, u8 ie);
const u8 * wpa_bss_get_ie_ext(const struct wpa_bss *bss, u8 ext);
const u8 * wpa_bss_get_vendor_ie(const struct wpa_bss *bss, u32 vendor_type);
const u8 * wpa_bss_get_vendor_ie_beacon(const struct wpa_bss *bss,
u32 vendor_type);
struct wpabuf * wpa_bss_get_vendor_ie_multi(const struct wpa_bss *bss,
u32 vendor_type);
struct wpabuf * wpa_bss_get_vendor_ie_multi_beacon(const struct wpa_bss *bss,
u32 vendor_type);
int wpa_bss_get_max_rate(const struct wpa_bss *bss);
int wpa_bss_get_bit_rates(const struct wpa_bss *bss, u8 **rates);
struct wpa_bss_anqp * wpa_bss_anqp_alloc(void);
int wpa_bss_anqp_unshare_alloc(struct wpa_bss *bss);
const u8 * wpa_bss_get_fils_cache_id(const struct wpa_bss *bss);
int wpa_bss_ext_capab(const struct wpa_bss *bss, unsigned int capab);
static inline int bss_is_dmg(const struct wpa_bss *bss)
{
return bss->freq > 45000;
}
/**
* Test whether a BSS is a PBSS.
* This checks whether a BSS is a DMG-band PBSS. PBSS is used for P2P DMG
* network.
*/
static inline int bss_is_pbss(struct wpa_bss *bss)
{
return bss_is_dmg(bss) &&
(bss->caps & IEEE80211_CAP_DMG_MASK) == IEEE80211_CAP_DMG_PBSS;
}
static inline void wpa_bss_update_level(struct wpa_bss *bss, int new_level)
{
if (bss != NULL && new_level > -WPA_INVALID_NOISE && new_level < 0)
bss->level = new_level;
}
void calculate_update_time(const struct os_reltime *fetch_time,
unsigned int age_ms,
struct os_reltime *update_time);
struct wpabuf * wpa_bss_defrag_mle(const struct wpa_bss *bss, u8 type);
int wpa_bss_parse_basic_ml_element(struct wpa_supplicant *wpa_s,
struct wpa_bss *bss,
u8 *ap_mld_addr,
u16 *missing_links);
#endif /* BSS_H */
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