text: /*
   * hostapd / Station table
   * Copyright (c) 2002-2011, Jouni Malinen <j@w1.fi>
   *
   * This software may be distributed under the terms of the BSD license.
   * See README for more details.
   */
  
  #ifndef STA_INFO_H
  #define STA_INFO_H
  
  #ifdef CONFIG_MESH
  /* needed for mesh_plink_state enum */
  #include "common/defs.h"
  #endif /* CONFIG_MESH */
  
  #include "list.h"
  
  /* STA flags */
  #define WLAN_STA_AUTH BIT(0)
  #define WLAN_STA_ASSOC BIT(1)
  #define WLAN_STA_AUTHORIZED BIT(5)
  #define WLAN_STA_PENDING_POLL BIT(6) /* pending activity poll not ACKed */
  #define WLAN_STA_SHORT_PREAMBLE BIT(7)
  #define WLAN_STA_PREAUTH BIT(8)
  #define WLAN_STA_WMM BIT(9)
  #define WLAN_STA_MFP BIT(10)
  #define WLAN_STA_HT BIT(11)
  #define WLAN_STA_WPS BIT(12)
  #define WLAN_STA_MAYBE_WPS BIT(13)
  #define WLAN_STA_WDS BIT(14)
  #define WLAN_STA_ASSOC_REQ_OK BIT(15)
  #define WLAN_STA_WPS2 BIT(16)
  #define WLAN_STA_GAS BIT(17)
  #define WLAN_STA_VHT BIT(18)
  #define WLAN_STA_WNM_SLEEP_MODE BIT(19)
  #define WLAN_STA_VHT_OPMODE_ENABLED BIT(20)
  #define WLAN_STA_VENDOR_VHT BIT(21)
  #define WLAN_STA_PENDING_DISASSOC_CB BIT(29)
  #define WLAN_STA_PENDING_DEAUTH_CB BIT(30)
  #define WLAN_STA_NONERP BIT(31)
  
  /* Maximum number of supported rates (from both Supported Rates and Extended
   * Supported Rates IEs). */
  #define WLAN_SUPP_RATES_MAX 32
  
  
  struct sta_info {
  	struct sta_info *next; /* next entry in sta list */
  	struct sta_info *hnext; /* next entry in hash table list */
  	u8 addr[6];
  	be32 ipaddr;
  	struct dl_list ip6addr; /* list head for struct ip6addr */
  	u16 aid; /* STA's unique AID (1 .. 2007) or 0 if not yet assigned */
  	u32 flags; /* Bitfield of WLAN_STA_* */
  	u16 capability;
  	u16 listen_interval; /* or beacon_int for APs */
  	u8 supported_rates[WLAN_SUPP_RATES_MAX];
  	int supported_rates_len;
  	u8 qosinfo; /* Valid when WLAN_STA_WMM is set */
  
  #ifdef CONFIG_MESH
  	enum mesh_plink_state plink_state;
  	u16 peer_lid;
  	u16 my_lid;
  	u16 mpm_close_reason;
  	int mpm_retries;
  	u8 my_nonce[32];
  	u8 peer_nonce[32];
  	u8 aek[32];	/* SHA256 digest length */
  	u8 mtk[16];
  	u8 mgtk[16];
  	u8 sae_auth_retry;
  #endif /* CONFIG_MESH */
  
  	unsigned int nonerp_set:1;
  	unsigned int no_short_slot_time_set:1;
  	unsigned int no_short_preamble_set:1;
  	unsigned int no_ht_gf_set:1;
  	unsigned int no_ht_set:1;
  	unsigned int ht40_intolerant_set:1;
  	unsigned int ht_20mhz_set:1;
  	unsigned int no_p2p_set:1;
  	unsigned int qos_map_enabled:1;
  	unsigned int remediation:1;
  	unsigned int hs20_deauth_requested:1;
  	unsigned int session_timeout_set:1;
  	unsigned int radius_das_match:1;
  
  	u16 auth_alg;
  
  	enum {
  		STA_NULLFUNC = 0, STA_DISASSOC, STA_DEAUTH, STA_REMOVE,
  		STA_DISASSOC_FROM_CLI
  	} timeout_next;
  
  	u16 deauth_reason;
  	u16 disassoc_reason;
  
  	/* IEEE 802.1X related data */
  	struct eapol_state_machine *eapol_sm;
  
  	u32 acct_session_id_hi;
  	u32 acct_session_id_lo;
  	struct os_reltime acct_session_start;
  	int acct_session_started;
  	int acct_terminate_cause; /* Acct-Terminate-Cause */
  	int acct_interim_interval; /* Acct-Interim-Interval */
  
  	unsigned long last_rx_bytes;
  	unsigned long last_tx_bytes;
  	u32 acct_input_gigawords; /* Acct-Input-Gigawords */
  	u32 acct_output_gigawords; /* Acct-Output-Gigawords */
  
  	u8 *challenge; /* IEEE 802.11 Shared Key Authentication Challenge */
  
  	struct wpa_state_machine *wpa_sm;
  	struct rsn_preauth_interface *preauth_iface;
  
  	struct hostapd_ssid *ssid; /* SSID selection based on (Re)AssocReq */
  	struct hostapd_ssid *ssid_probe; /* SSID selection based on ProbeReq */
  
  	int vlan_id; /* 0: none, >0: VID */
  	int vlan_id_bound; /* updated by ap_sta_bind_vlan() */
  	 /* PSKs from RADIUS authentication server */
  	struct hostapd_sta_wpa_psk_short *psk;
  
  	char *identity; /* User-Name from RADIUS */
  	char *radius_cui; /* Chargeable-User-Identity from RADIUS */
  
  	struct ieee80211_ht_capabilities *ht_capabilities;
  	struct ieee80211_vht_capabilities *vht_capabilities;
  	u8 vht_opmode;
  
  #ifdef CONFIG_IEEE80211W
  	int sa_query_count; /* number of pending SA Query requests;
  			     * 0 = no SA Query in progress */
  	int sa_query_timed_out;
  	u8 *sa_query_trans_id; /* buffer of WLAN_SA_QUERY_TR_ID_LEN *
  				* sa_query_count octets of pending SA Query
  				* transaction identifiers */
  	struct os_reltime sa_query_start;
  #endif /* CONFIG_IEEE80211W */
  
  #ifdef CONFIG_INTERWORKING
  #define GAS_DIALOG_MAX 8 /* Max concurrent dialog number */
  	struct gas_dialog_info *gas_dialog;
  	u8 gas_dialog_next;
  #endif /* CONFIG_INTERWORKING */
  
  	struct wpabuf *wps_ie; /* WPS IE from (Re)Association Request */
  	struct wpabuf *p2p_ie; /* P2P IE from (Re)Association Request */
  	struct wpabuf *hs20_ie; /* HS 2.0 IE from (Re)Association Request */
  	u8 remediation_method;
  	char *remediation_url; /* HS 2.0 Subscription Remediation Server URL */
  	struct wpabuf *hs20_deauth_req;
  	char *hs20_session_info_url;
  	int hs20_disassoc_timer;
  
  	struct os_reltime connected_time;
  
  #ifdef CONFIG_SAE
  	struct sae_data *sae;
  #endif /* CONFIG_SAE */
  
  	u32 session_timeout; /* valid only if session_timeout_set == 1 */
  
  	/* Last Authentication/(Re)Association Request/Action frame sequence
  	 * control */
  	u16 last_seq_ctrl;
  	/* Last Authentication/(Re)Association Request/Action frame subtype */
  	u8 last_subtype;
  };
  
  
  /* Default value for maximum station inactivity. After AP_MAX_INACTIVITY has
   * passed since last received frame from the station, a nullfunc data frame is
   * sent to the station. If this frame is not acknowledged and no other frames
   * have been received, the station will be disassociated after
   * AP_DISASSOC_DELAY seconds. Similarly, the station will be deauthenticated
   * after AP_DEAUTH_DELAY seconds has passed after disassociation. */
  #define AP_MAX_INACTIVITY (5 * 60)
  #define AP_DISASSOC_DELAY (1)
  #define AP_DEAUTH_DELAY (1)
  /* Number of seconds to keep STA entry with Authenticated flag after it has
   * been disassociated. */
  #define AP_MAX_INACTIVITY_AFTER_DISASSOC (1 * 30)
  /* Number of seconds to keep STA entry after it has been deauthenticated. */
  #define AP_MAX_INACTIVITY_AFTER_DEAUTH (1 * 5)
  
  
  struct hostapd_data;
  
  int ap_for_each_sta(struct hostapd_data *hapd,
  		    int (*cb)(struct hostapd_data *hapd, struct sta_info *sta,
  			      void *ctx),
  		    void *ctx);
  struct sta_info * ap_get_sta(struct hostapd_data *hapd, const u8 *sta);
  struct sta_info * ap_get_sta_p2p(struct hostapd_data *hapd, const u8 *addr);
  void ap_sta_hash_add(struct hostapd_data *hapd, struct sta_info *sta);
  void ap_free_sta(struct hostapd_data *hapd, struct sta_info *sta);
  void ap_sta_ip6addr_del(struct hostapd_data *hapd, struct sta_info *sta);
  void hostapd_free_stas(struct hostapd_data *hapd);
  void ap_handle_timer(void *eloop_ctx, void *timeout_ctx);
  void ap_sta_replenish_timeout(struct hostapd_data *hapd, struct sta_info *sta,
  			      u32 session_timeout);
  void ap_sta_session_timeout(struct hostapd_data *hapd, struct sta_info *sta,
  			    u32 session_timeout);
  void ap_sta_no_session_timeout(struct hostapd_data *hapd,
  			       struct sta_info *sta);
  void ap_sta_session_warning_timeout(struct hostapd_data *hapd,
  				    struct sta_info *sta, int warning_time);
  struct sta_info * ap_sta_add(struct hostapd_data *hapd, const u8 *addr);
  void ap_sta_disassociate(struct hostapd_data *hapd, struct sta_info *sta,
  			 u16 reason);
  void ap_sta_deauthenticate(struct hostapd_data *hapd, struct sta_info *sta,
  			   u16 reason);
  #ifdef CONFIG_WPS
  int ap_sta_wps_cancel(struct hostapd_data *hapd,
  		      struct sta_info *sta, void *ctx);
  #endif /* CONFIG_WPS */
  int ap_sta_bind_vlan(struct hostapd_data *hapd, struct sta_info *sta);
  void ap_sta_start_sa_query(struct hostapd_data *hapd, struct sta_info *sta);
  void ap_sta_stop_sa_query(struct hostapd_data *hapd, struct sta_info *sta);
  int ap_check_sa_query_timeout(struct hostapd_data *hapd, struct sta_info *sta);
  void ap_sta_disconnect(struct hostapd_data *hapd, struct sta_info *sta,
  		       const u8 *addr, u16 reason);
  
  void ap_sta_set_authorized(struct hostapd_data *hapd,
  			   struct sta_info *sta, int authorized);
  static inline int ap_sta_is_authorized(struct sta_info *sta)
  {
  	return sta->flags & WLAN_STA_AUTHORIZED;
  }
  
  void ap_sta_deauth_cb(struct hostapd_data *hapd, struct sta_info *sta);
  void ap_sta_disassoc_cb(struct hostapd_data *hapd, struct sta_info *sta);
  
  int ap_sta_flags_txt(u32 flags, char *buf, size_t buflen);
  
  #endif /* STA_INFO_H */
  