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1  /*
2   * hostapd / Station table
3   * Copyright (c) 2002-2011, Jouni Malinen <j@w1.fi>
4   *
5   * This software may be distributed under the terms of the BSD license.
6   * See README for more details.
7   */
8  
9  #ifndef STA_INFO_H
10  #define STA_INFO_H
11  
12  #ifdef CONFIG_MESH
13  /* needed for mesh_plink_state enum */
14  #include "common/defs.h"
15  #include "common/wpa_common.h"
16  #endif /* CONFIG_MESH */
17  
18  #include "list.h"
19  #include "vlan.h"
20  #include "common/ieee802_11_defs.h"
21  
22  /* STA flags */
23  #define WLAN_STA_AUTH BIT(0)
24  #define WLAN_STA_ASSOC BIT(1)
25  #define WLAN_STA_AUTHORIZED BIT(5)
26  #define WLAN_STA_PENDING_POLL BIT(6) /* pending activity poll not ACKed */
27  #define WLAN_STA_SHORT_PREAMBLE BIT(7)
28  #define WLAN_STA_PREAUTH BIT(8)
29  #define WLAN_STA_WMM BIT(9)
30  #define WLAN_STA_MFP BIT(10)
31  #define WLAN_STA_HT BIT(11)
32  #define WLAN_STA_WPS BIT(12)
33  #define WLAN_STA_MAYBE_WPS BIT(13)
34  #define WLAN_STA_WDS BIT(14)
35  #define WLAN_STA_ASSOC_REQ_OK BIT(15)
36  #define WLAN_STA_WPS2 BIT(16)
37  #define WLAN_STA_GAS BIT(17)
38  #define WLAN_STA_VHT BIT(18)
39  #define WLAN_STA_WNM_SLEEP_MODE BIT(19)
40  #define WLAN_STA_VHT_OPMODE_ENABLED BIT(20)
41  #define WLAN_STA_VENDOR_VHT BIT(21)
42  #define WLAN_STA_PENDING_FILS_ERP BIT(22)
43  #define WLAN_STA_PENDING_DISASSOC_CB BIT(29)
44  #define WLAN_STA_PENDING_DEAUTH_CB BIT(30)
45  #define WLAN_STA_NONERP BIT(31)
46  
47  /* Maximum number of supported rates (from both Supported Rates and Extended
48   * Supported Rates IEs). */
49  #define WLAN_SUPP_RATES_MAX 32
50  
51  
52  struct mbo_non_pref_chan_info {
53  	struct mbo_non_pref_chan_info *next;
54  	u8 op_class;
55  	u8 pref;
56  	u8 reason_code;
57  	u8 num_channels;
58  	u8 channels[];
59  };
60  
61  struct pending_eapol_rx {
62  	struct wpabuf *buf;
63  	struct os_reltime rx_time;
64  };
65  
66  struct sta_info {
67  	struct sta_info *next; /* next entry in sta list */
68  	struct sta_info *hnext; /* next entry in hash table list */
69  	u8 addr[6];
70  	be32 ipaddr;
71  	struct dl_list ip6addr; /* list head for struct ip6addr */
72  	u16 aid; /* STA's unique AID (1 .. 2007) or 0 if not yet assigned */
73  	u32 flags; /* Bitfield of WLAN_STA_* */
74  	u16 capability;
75  	u16 listen_interval; /* or beacon_int for APs */
76  	u8 supported_rates[WLAN_SUPP_RATES_MAX];
77  	int supported_rates_len;
78  	u8 qosinfo; /* Valid when WLAN_STA_WMM is set */
79  
80  #ifdef CONFIG_MESH
81  	enum mesh_plink_state plink_state;
82  	u16 peer_lid;
83  	u16 my_lid;
84  	u16 peer_aid;
85  	u16 mpm_close_reason;
86  	int mpm_retries;
87  	u8 my_nonce[WPA_NONCE_LEN];
88  	u8 peer_nonce[WPA_NONCE_LEN];
89  	u8 aek[32];	/* SHA256 digest length */
90  	u8 mtk[WPA_TK_MAX_LEN];
91  	size_t mtk_len;
92  	u8 mgtk_rsc[6];
93  	u8 mgtk_key_id;
94  	u8 mgtk[WPA_TK_MAX_LEN];
95  	size_t mgtk_len;
96  	u8 igtk_rsc[6];
97  	u8 igtk[WPA_TK_MAX_LEN];
98  	size_t igtk_len;
99  	u16 igtk_key_id;
100  	u8 sae_auth_retry;
101  #endif /* CONFIG_MESH */
102  
103  	unsigned int nonerp_set:1;
104  	unsigned int no_short_slot_time_set:1;
105  	unsigned int no_short_preamble_set:1;
106  	unsigned int no_ht_gf_set:1;
107  	unsigned int no_ht_set:1;
108  	unsigned int ht40_intolerant_set:1;
109  	unsigned int ht_20mhz_set:1;
110  	unsigned int no_p2p_set:1;
111  	unsigned int qos_map_enabled:1;
112  	unsigned int remediation:1;
113  	unsigned int hs20_deauth_requested:1;
114  	unsigned int session_timeout_set:1;
115  	unsigned int radius_das_match:1;
116  	unsigned int ecsa_supported:1;
117  	unsigned int added_unassoc:1;
118  	unsigned int pending_wds_enable:1;
119  
120  	u16 auth_alg;
121  
122  	enum {
123  		STA_NULLFUNC = 0, STA_DISASSOC, STA_DEAUTH, STA_REMOVE,
124  		STA_DISASSOC_FROM_CLI
125  	} timeout_next;
126  
127  	u16 deauth_reason;
128  	u16 disassoc_reason;
129  
130  	/* IEEE 802.1X related data */
131  	struct eapol_state_machine *eapol_sm;
132  
133  	struct pending_eapol_rx *pending_eapol_rx;
134  
135  	u64 acct_session_id;
136  	struct os_reltime acct_session_start;
137  	int acct_session_started;
138  	int acct_terminate_cause; /* Acct-Terminate-Cause */
139  	int acct_interim_interval; /* Acct-Interim-Interval */
140  	unsigned int acct_interim_errors;
141  
142  	/* For extending 32-bit driver counters to 64-bit counters */
143  	u32 last_rx_bytes_hi;
144  	u32 last_rx_bytes_lo;
145  	u32 last_tx_bytes_hi;
146  	u32 last_tx_bytes_lo;
147  
148  	u8 *challenge; /* IEEE 802.11 Shared Key Authentication Challenge */
149  
150  	struct wpa_state_machine *wpa_sm;
151  	struct rsn_preauth_interface *preauth_iface;
152  
153  	int vlan_id; /* 0: none, >0: VID */
154  	struct vlan_description *vlan_desc;
155  	int vlan_id_bound; /* updated by ap_sta_bind_vlan() */
156  	 /* PSKs from RADIUS authentication server */
157  	struct hostapd_sta_wpa_psk_short *psk;
158  
159  	char *identity; /* User-Name from RADIUS */
160  	char *radius_cui; /* Chargeable-User-Identity from RADIUS */
161  
162  	struct ieee80211_ht_capabilities *ht_capabilities;
163  	struct ieee80211_vht_capabilities *vht_capabilities;
164  	u8 vht_opmode;
165  
166  #ifdef CONFIG_IEEE80211W
167  	int sa_query_count; /* number of pending SA Query requests;
168  			     * 0 = no SA Query in progress */
169  	int sa_query_timed_out;
170  	u8 *sa_query_trans_id; /* buffer of WLAN_SA_QUERY_TR_ID_LEN *
171  				* sa_query_count octets of pending SA Query
172  				* transaction identifiers */
173  	struct os_reltime sa_query_start;
174  #endif /* CONFIG_IEEE80211W */
175  
176  #ifdef CONFIG_INTERWORKING
177  #define GAS_DIALOG_MAX 8 /* Max concurrent dialog number */
178  	struct gas_dialog_info *gas_dialog;
179  	u8 gas_dialog_next;
180  #endif /* CONFIG_INTERWORKING */
181  
182  	struct wpabuf *wps_ie; /* WPS IE from (Re)Association Request */
183  	struct wpabuf *p2p_ie; /* P2P IE from (Re)Association Request */
184  	struct wpabuf *hs20_ie; /* HS 2.0 IE from (Re)Association Request */
185  	u8 remediation_method;
186  	char *remediation_url; /* HS 2.0 Subscription Remediation Server URL */
187  	struct wpabuf *hs20_deauth_req;
188  	char *hs20_session_info_url;
189  	int hs20_disassoc_timer;
190  #ifdef CONFIG_FST
191  	struct wpabuf *mb_ies; /* MB IEs from (Re)Association Request */
192  #endif /* CONFIG_FST */
193  
194  	struct os_reltime connected_time;
195  
196  #ifdef CONFIG_SAE
197  	struct sae_data *sae;
198  	unsigned int mesh_sae_pmksa_caching:1;
199  #endif /* CONFIG_SAE */
200  
201  	u32 session_timeout; /* valid only if session_timeout_set == 1 */
202  
203  	/* Last Authentication/(Re)Association Request/Action frame sequence
204  	 * control */
205  	u16 last_seq_ctrl;
206  	/* Last Authentication/(Re)Association Request/Action frame subtype */
207  	u8 last_subtype;
208  
209  #ifdef CONFIG_MBO
210  	u8 cell_capa; /* 0 = unknown (not an MBO STA); otherwise,
211  		       * enum mbo_cellular_capa values */
212  	struct mbo_non_pref_chan_info *non_pref_chan;
213  #endif /* CONFIG_MBO */
214  
215  	u8 *supp_op_classes; /* Supported Operating Classes element, if
216  			      * received, starting from the Length field */
217  
218  	u8 rrm_enabled_capa[5];
219  
220  #ifdef CONFIG_TAXONOMY
221  	struct wpabuf *probe_ie_taxonomy;
222  	struct wpabuf *assoc_ie_taxonomy;
223  #endif /* CONFIG_TAXONOMY */
224  
225  #ifdef CONFIG_FILS
226  	u8 fils_snonce[FILS_NONCE_LEN];
227  	u8 fils_session[FILS_SESSION_LEN];
228  	u8 *fils_pending_assoc_req;
229  	size_t fils_pending_assoc_req_len;
230  	unsigned int fils_pending_assoc_is_reassoc:1;
231  	unsigned int fils_dhcp_rapid_commit_proxy:1;
232  	struct wpabuf *fils_hlp_resp;
233  	struct wpabuf *hlp_dhcp_discover;
234  #endif /* CONFIG_FILS */
235  };
236  
237  
238  /* Default value for maximum station inactivity. After AP_MAX_INACTIVITY has
239   * passed since last received frame from the station, a nullfunc data frame is
240   * sent to the station. If this frame is not acknowledged and no other frames
241   * have been received, the station will be disassociated after
242   * AP_DISASSOC_DELAY seconds. Similarly, the station will be deauthenticated
243   * after AP_DEAUTH_DELAY seconds has passed after disassociation. */
244  #define AP_MAX_INACTIVITY (5 * 60)
245  #define AP_DISASSOC_DELAY (3)
246  #define AP_DEAUTH_DELAY (1)
247  /* Number of seconds to keep STA entry with Authenticated flag after it has
248   * been disassociated. */
249  #define AP_MAX_INACTIVITY_AFTER_DISASSOC (1 * 30)
250  /* Number of seconds to keep STA entry after it has been deauthenticated. */
251  #define AP_MAX_INACTIVITY_AFTER_DEAUTH (1 * 5)
252  
253  
254  struct hostapd_data;
255  
256  int ap_for_each_sta(struct hostapd_data *hapd,
257  		    int (*cb)(struct hostapd_data *hapd, struct sta_info *sta,
258  			      void *ctx),
259  		    void *ctx);
260  struct sta_info * ap_get_sta(struct hostapd_data *hapd, const u8 *sta);
261  struct sta_info * ap_get_sta_p2p(struct hostapd_data *hapd, const u8 *addr);
262  void ap_sta_hash_add(struct hostapd_data *hapd, struct sta_info *sta);
263  void ap_free_sta(struct hostapd_data *hapd, struct sta_info *sta);
264  void ap_sta_ip6addr_del(struct hostapd_data *hapd, struct sta_info *sta);
265  void hostapd_free_stas(struct hostapd_data *hapd);
266  void ap_handle_timer(void *eloop_ctx, void *timeout_ctx);
267  void ap_sta_replenish_timeout(struct hostapd_data *hapd, struct sta_info *sta,
268  			      u32 session_timeout);
269  void ap_sta_session_timeout(struct hostapd_data *hapd, struct sta_info *sta,
270  			    u32 session_timeout);
271  void ap_sta_no_session_timeout(struct hostapd_data *hapd,
272  			       struct sta_info *sta);
273  void ap_sta_session_warning_timeout(struct hostapd_data *hapd,
274  				    struct sta_info *sta, int warning_time);
275  struct sta_info * ap_sta_add(struct hostapd_data *hapd, const u8 *addr);
276  void ap_sta_disassociate(struct hostapd_data *hapd, struct sta_info *sta,
277  			 u16 reason);
278  void ap_sta_deauthenticate(struct hostapd_data *hapd, struct sta_info *sta,
279  			   u16 reason);
280  #ifdef CONFIG_WPS
281  int ap_sta_wps_cancel(struct hostapd_data *hapd,
282  		      struct sta_info *sta, void *ctx);
283  #endif /* CONFIG_WPS */
284  int ap_sta_bind_vlan(struct hostapd_data *hapd, struct sta_info *sta);
285  int ap_sta_set_vlan(struct hostapd_data *hapd, struct sta_info *sta,
286  		    struct vlan_description *vlan_desc);
287  void ap_sta_start_sa_query(struct hostapd_data *hapd, struct sta_info *sta);
288  void ap_sta_stop_sa_query(struct hostapd_data *hapd, struct sta_info *sta);
289  int ap_check_sa_query_timeout(struct hostapd_data *hapd, struct sta_info *sta);
290  void ap_sta_disconnect(struct hostapd_data *hapd, struct sta_info *sta,
291  		       const u8 *addr, u16 reason);
292  
293  void ap_sta_set_authorized(struct hostapd_data *hapd,
294  			   struct sta_info *sta, int authorized);
ap_sta_is_authorized(struct sta_info * sta)295  static inline int ap_sta_is_authorized(struct sta_info *sta)
296  {
297  	return sta->flags & WLAN_STA_AUTHORIZED;
298  }
299  
300  void ap_sta_deauth_cb(struct hostapd_data *hapd, struct sta_info *sta);
301  void ap_sta_disassoc_cb(struct hostapd_data *hapd, struct sta_info *sta);
302  void ap_sta_clear_disconnect_timeouts(struct hostapd_data *hapd,
303  				      struct sta_info *sta);
304  
305  int ap_sta_flags_txt(u32 flags, char *buf, size_t buflen);
306  void ap_sta_delayed_1x_auth_fail_disconnect(struct hostapd_data *hapd,
307  					    struct sta_info *sta);
308  int ap_sta_pending_delayed_1x_auth_fail_disconnect(struct hostapd_data *hapd,
309  						   struct sta_info *sta);
310  
311  #endif /* STA_INFO_H */
312