1 /*
2  * Driver interaction with Linux nl80211/cfg80211 - definitions
3  * Copyright (c) 2002-2014, Jouni Malinen <j@w1.fi>
4  * Copyright (c) 2003-2004, Instant802 Networks, Inc.
5  * Copyright (c) 2005-2006, Devicescape Software, Inc.
6  * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
7  * Copyright (c) 2009-2010, Atheros Communications
8  *
9  * This software may be distributed under the terms of the BSD license.
10  * See README for more details.
11  */
12 
13 #ifndef DRIVER_NL80211_H
14 #define DRIVER_NL80211_H
15 
16 #include "nl80211_copy.h"
17 #include "utils/list.h"
18 #include "driver.h"
19 
20 #ifndef NL_CAPABILITY_VERSION_3_5_0
21 #define nla_nest_start(msg, attrtype) \
22 	nla_nest_start(msg, NLA_F_NESTED | (attrtype))
23 #endif
24 
25 struct nl80211_global {
26 	void *ctx;
27 	struct dl_list interfaces;
28 	int if_add_ifindex;
29 	u64 if_add_wdevid;
30 	int if_add_wdevid_set;
31 	struct netlink_data *netlink;
32 	struct nl_cb *nl_cb;
33 	struct nl_sock *nl;
34 	int nl80211_id;
35 	unsigned int nl80211_maxattr;
36 	int nlctrl_id;
37 	int ioctl_sock; /* socket for ioctl() use */
38 
39 	struct nl_sock *nl_event;
40 };
41 
42 struct nl80211_wiphy_data {
43 	struct dl_list list;
44 	struct dl_list bsss;
45 	struct dl_list drvs;
46 
47 	struct nl_sock *nl_beacons;
48 	struct nl_cb *nl_cb;
49 
50 	int wiphy_idx;
51 };
52 
53 #define NL80211_DRV_LINK_ID_NA (-1)
54 
55 struct i802_link {
56 	unsigned int beacon_set:1;
57 
58 	int freq;
59 	int bandwidth;
60 	u8 addr[ETH_ALEN];
61 	void *ctx;
62 };
63 
64 struct i802_bss {
65 	struct wpa_driver_nl80211_data *drv;
66 	struct i802_bss *next;
67 
68 	u16 valid_links;
69 	struct i802_link links[MAX_NUM_MLD_LINKS];
70 	struct i802_link *flink;
71 
72 	int ifindex;
73 	int br_ifindex;
74 	u64 wdev_id;
75 	char ifname[IFNAMSIZ + 1];
76 	char brname[IFNAMSIZ];
77 	unsigned int added_if_into_bridge:1;
78 	unsigned int already_in_bridge:1;
79 	unsigned int added_bridge:1;
80 	unsigned int in_deinit:1;
81 	unsigned int wdev_id_set:1;
82 	unsigned int added_if:1;
83 	unsigned int static_ap:1;
84 
85 	u8 addr[ETH_ALEN];
86 	u8 prev_addr[ETH_ALEN];
87 
88 	int if_dynamic;
89 
90 	void *ctx;
91 	struct nl_sock *nl_preq, *nl_mgmt, *nl_connect;
92 	struct nl_cb *nl_cb;
93 
94 	struct nl80211_wiphy_data *wiphy_data;
95 	struct dl_list wiphy_list;
96 	u8 rand_addr[ETH_ALEN];
97 };
98 
99 struct drv_nl80211_if_info {
100 	int ifindex;
101 	/* the AP/AP_VLAN iface that is in this bridge */
102 	int reason;
103 };
104 
105 struct wpa_driver_nl80211_data {
106 	struct nl80211_global *global;
107 	struct dl_list list;
108 	struct dl_list wiphy_list;
109 	char phyname[32];
110 	unsigned int wiphy_idx;
111 	u8 perm_addr[ETH_ALEN];
112 	void *ctx;
113 	int ifindex;
114 	int if_removed;
115 	int if_disabled;
116 	int ignore_if_down_event;
117 	struct rfkill_data *rfkill;
118 	struct wpa_driver_capa capa;
119 	u8 *extended_capa, *extended_capa_mask;
120 	unsigned int extended_capa_len;
121 	struct drv_nl80211_iface_capa {
122 		enum nl80211_iftype iftype;
123 		u8 *ext_capa, *ext_capa_mask;
124 		unsigned int ext_capa_len;
125 		u16 eml_capa;
126 		u16 mld_capa_and_ops;
127 	} iface_capa[NL80211_IFTYPE_MAX];
128 	unsigned int num_iface_capa;
129 
130 	int has_capability;
131 	int has_driver_key_mgmt;
132 
133 	int operstate;
134 
135 	int scan_complete_events;
136 	enum scan_states {
137 		NO_SCAN, SCAN_REQUESTED, SCAN_STARTED, SCAN_COMPLETED,
138 		SCAN_ABORTED, SCHED_SCAN_STARTED, SCHED_SCAN_STOPPED,
139 		SCHED_SCAN_RESULTS
140 	} scan_state;
141 
142 	u8 auth_bssid[ETH_ALEN];
143 	u8 auth_attempt_bssid[ETH_ALEN];
144 	u8 bssid[ETH_ALEN];
145 	u8 prev_bssid[ETH_ALEN];
146 	int associated;
147 	struct driver_sta_mlo_info sta_mlo_info;
148 	u8 ssid[SSID_MAX_LEN];
149 	size_t ssid_len;
150 	enum nl80211_iftype nlmode;
151 	enum nl80211_iftype ap_scan_as_station;
152 	unsigned int assoc_freq;
153 
154 	int monitor_sock;
155 	int monitor_ifidx;
156 	int monitor_refcount;
157 
158 	unsigned int disabled_11b_rates:1;
159 	unsigned int pending_remain_on_chan:1;
160 	unsigned int in_interface_list:1;
161 	unsigned int device_ap_sme:1;
162 	unsigned int poll_command_supported:1;
163 	unsigned int data_tx_status:1;
164 	unsigned int scan_for_auth:1;
165 	unsigned int retry_auth:1;
166 	unsigned int use_monitor:1;
167 	unsigned int hostapd:1;
168 	unsigned int start_mode_sta:1;
169 	unsigned int start_iface_up:1;
170 	unsigned int test_use_roc_tx:1;
171 	unsigned int ignore_deauth_event:1;
172 	unsigned int vendor_cmd_test_avail:1;
173 	unsigned int roaming_vendor_cmd_avail:1;
174 	unsigned int dfs_vendor_cmd_avail:1;
175 	unsigned int have_low_prio_scan:1;
176 	unsigned int force_connect_cmd:1;
177 	unsigned int addr_changed:1;
178 	unsigned int get_features_vendor_cmd_avail:1;
179 	unsigned int set_rekey_offload:1;
180 	unsigned int p2p_go_ctwindow_supported:1;
181 	unsigned int setband_vendor_cmd_avail:1;
182 	unsigned int get_pref_freq_list:1;
183 	unsigned int set_prob_oper_freq:1;
184 	unsigned int scan_vendor_cmd_avail:1;
185 	unsigned int connect_reassoc:1;
186 	unsigned int set_wifi_conf_vendor_cmd_avail:1;
187 	unsigned int fetch_bss_trans_status:1;
188 	unsigned int roam_vendor_cmd_avail:1;
189 	unsigned int add_sta_node_vendor_cmd_avail:1;
190 	unsigned int control_port_ap:1;
191 	unsigned int multicast_registrations:1;
192 	unsigned int no_rrm:1;
193 	unsigned int get_sta_info_vendor_cmd_avail:1;
194 	unsigned int fils_discovery:1;
195 	unsigned int unsol_bcast_probe_resp:1;
196 	unsigned int qca_do_acs:1;
197 	unsigned int brcm_do_acs:1;
198 	unsigned int uses_6ghz:1;
199 	unsigned int uses_s1g:1;
200 	unsigned int secure_ranging_ctx_vendor_cmd_avail:1;
201 	unsigned int puncturing:1;
202 	unsigned int qca_ap_allowed_freqs:1;
203 	unsigned int connect_ext_vendor_cmd_avail:1;
204 
205 	u32 ignore_next_local_disconnect;
206 	u32 ignore_next_local_deauth;
207 
208 	u64 vendor_scan_cookie;
209 	u64 remain_on_chan_cookie;
210 	u64 send_frame_cookie;
211 	int send_frame_link_id;
212 #define MAX_SEND_FRAME_COOKIES 20
213 	u64 send_frame_cookies[MAX_SEND_FRAME_COOKIES];
214 	unsigned int num_send_frame_cookies;
215 	u64 eapol_tx_cookie;
216 	int eapol_tx_link_id;
217 
218 	unsigned int last_mgmt_freq;
219 
220 	struct wpa_driver_scan_filter *filter_ssids;
221 	size_t num_filter_ssids;
222 
223 	struct i802_bss *first_bss;
224 
225 	int eapol_tx_sock;
226 
227 	int eapol_sock; /* socket for EAPOL frames */
228 
229 	struct nl_sock *rtnl_sk; /* nl_sock for NETLINK_ROUTE */
230 
231 	struct drv_nl80211_if_info default_if_indices[16];
232 	struct drv_nl80211_if_info *if_indices;
233 	int num_if_indices;
234 
235 	/* From failed authentication command */
236 	int auth_freq;
237 	u8 auth_bssid_[ETH_ALEN];
238 	u8 auth_ssid[SSID_MAX_LEN];
239 	size_t auth_ssid_len;
240 	int auth_alg;
241 	u8 *auth_ie;
242 	size_t auth_ie_len;
243 	u8 *auth_data;
244 	size_t auth_data_len;
245 	u8 auth_wep_key[4][16];
246 	size_t auth_wep_key_len[4];
247 	int auth_wep_tx_keyidx;
248 	int auth_local_state_change;
249 	int auth_p2p;
250 	bool auth_mld;
251 	u8 auth_mld_link_id;
252 	u8 auth_ap_mld_addr[ETH_ALEN];
253 
254 	/*
255 	 * Tells whether the last scan issued from wpa_supplicant was a normal
256 	 * scan (NL80211_CMD_TRIGGER_SCAN) or a vendor scan
257 	 * (NL80211_CMD_VENDOR). 0 if no pending scan request.
258 	 */
259 	int last_scan_cmd;
260 #ifdef CONFIG_DRIVER_NL80211_QCA
261 	bool roam_indication_done;
262 	u8 *pending_roam_data;
263 	size_t pending_roam_data_len;
264 	u8 *pending_t2lm_data;
265 	size_t pending_t2lm_data_len;
266 	u8 *pending_link_reconfig_data;
267 	size_t pending_link_reconfig_data_len;
268 #endif /* CONFIG_DRIVER_NL80211_QCA */
269 };
270 
271 struct nl_msg;
272 
273 struct nl80211_err_info {
274 	int link_id;
275 };
276 
277 void * nl80211_cmd(struct wpa_driver_nl80211_data *drv,
278 		   struct nl_msg *msg, int flags, uint8_t cmd);
279 struct nl_msg * nl80211_cmd_msg(struct i802_bss *bss, int flags, uint8_t cmd);
280 struct nl_msg * nl80211_drv_msg(struct wpa_driver_nl80211_data *drv, int flags,
281 				uint8_t cmd);
282 struct nl_msg * nl80211_bss_msg(struct i802_bss *bss, int flags, uint8_t cmd);
283 
284 int send_and_recv(struct nl80211_global *global,
285 		  struct nl_sock *nl_handle, struct nl_msg *msg,
286 		  int (*valid_handler)(struct nl_msg *, void *),
287 		  void *valid_data,
288 		  int (*ack_handler_custom)(struct nl_msg *, void *),
289 		  void *ack_data,
290 		  struct nl80211_err_info *err_info);
291 
292 static inline int
send_and_recv_cmd(struct wpa_driver_nl80211_data * drv,struct nl_msg * msg)293 send_and_recv_cmd(struct wpa_driver_nl80211_data *drv,
294 		  struct nl_msg *msg)
295 {
296 	return send_and_recv(drv->global, drv->global->nl, msg,
297 			     NULL, NULL, NULL, NULL, NULL);
298 }
299 
300 static inline int
send_and_recv_resp(struct wpa_driver_nl80211_data * drv,struct nl_msg * msg,int (* valid_handler)(struct nl_msg *,void *),void * valid_data)301 send_and_recv_resp(struct wpa_driver_nl80211_data *drv,
302 		   struct nl_msg *msg,
303 		   int (*valid_handler)(struct nl_msg *, void *),
304 		   void *valid_data)
305 {
306 	return send_and_recv(drv->global, drv->global->nl, msg,
307 			     valid_handler, valid_data, NULL, NULL, NULL);
308 }
309 
310 int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
311 			 const char *ifname, enum nl80211_iftype iftype,
312 			 const u8 *addr, int wds,
313 			 int (*handler)(struct nl_msg *, void *),
314 			 void *arg, int use_existing);
315 void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, int ifidx);
316 unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv);
317 int nl80211_get_assoc_ssid(struct wpa_driver_nl80211_data *drv, u8 *ssid);
318 enum chan_width convert2width(int width);
319 void nl80211_mark_disconnected(struct wpa_driver_nl80211_data *drv);
320 struct i802_bss * get_bss_ifindex(struct wpa_driver_nl80211_data *drv,
321 				  int ifindex);
322 int is_ap_interface(enum nl80211_iftype nlmode);
323 int is_sta_interface(enum nl80211_iftype nlmode);
324 int wpa_driver_nl80211_authenticate_retry(struct wpa_driver_nl80211_data *drv);
325 int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv,
326 			    const u8 *bssid,
327 			    struct hostap_sta_driver_data *data);
328 int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv,
329 			   struct wpa_signal_info *sig_change);
330 int nl80211_get_wiphy_index(struct i802_bss *bss);
331 int wpa_driver_nl80211_set_mode(struct i802_bss *bss,
332 				enum nl80211_iftype nlmode);
333 int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
334 			    const u8 *addr, int cmd, u16 reason_code,
335 			    int local_state_change,
336 			    struct i802_bss *bss);
337 
338 int nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv);
339 void nl80211_remove_monitor_interface(struct wpa_driver_nl80211_data *drv);
340 int nl80211_send_monitor(struct wpa_driver_nl80211_data *drv,
341 			 const void *data, size_t len,
342 			 int encrypt, int noack);
343 
344 int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv);
345 struct hostapd_hw_modes *
346 nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags,
347 			    u8 *dfs_domain);
348 
349 int process_global_event(struct nl_msg *msg, void *arg);
350 int process_bss_event(struct nl_msg *msg, void *arg);
351 
352 const char * nl80211_iftype_str(enum nl80211_iftype mode);
353 
354 void nl80211_restore_ap_mode(struct i802_bss *bss);
355 struct i802_link * nl80211_get_link(struct i802_bss *bss, s8 link_id);
356 
nl80211_link_valid(u16 links,s8 link_id)357 static inline bool nl80211_link_valid(u16 links, s8 link_id)
358 {
359 	if (link_id < 0 || link_id >= MAX_NUM_MLD_LINKS)
360 		return false;
361 
362 	if (links & BIT(link_id))
363 		return true;
364 
365 	return false;
366 }
367 
368 
369 static inline bool
nl80211_attr_supported(struct wpa_driver_nl80211_data * drv,unsigned int attr)370 nl80211_attr_supported(struct wpa_driver_nl80211_data *drv, unsigned int attr)
371 {
372 	return attr <= drv->global->nl80211_maxattr;
373 }
374 
375 #ifdef ANDROID
376 int android_nl_socket_set_nonblocking(struct nl_sock *handle);
377 int android_pno_start(struct i802_bss *bss,
378 		      struct wpa_driver_scan_params *params);
379 int android_pno_stop(struct i802_bss *bss);
380 extern int wpa_driver_nl80211_driver_cmd(void *priv, char *cmd, char *buf,
381 					 size_t buf_len);
382 extern int wpa_driver_nl80211_driver_event(struct wpa_driver_nl80211_data *drv,
383 					   u32 vendor_id, u32 subcmd,
384 					   u8 *data, size_t len);
385 
386 
387 #ifdef ANDROID_P2P
388 int wpa_driver_set_p2p_noa(void *priv, u8 count, int start, int duration);
389 int wpa_driver_get_p2p_noa(void *priv, u8 *buf, size_t len);
390 int wpa_driver_set_p2p_ps(void *priv, int legacy_ps, int opp_ps, int ctwindow);
391 int wpa_driver_set_ap_wps_p2p_ie(void *priv, const struct wpabuf *beacon,
392 				 const struct wpabuf *proberesp,
393 				 const struct wpabuf *assocresp);
394 #endif /* ANDROID_P2P */
395 #endif /* ANDROID */
396 
397 
398 /* driver_nl80211_scan.c */
399 
400 void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx);
401 int wpa_driver_nl80211_scan(struct i802_bss *bss,
402 			    struct wpa_driver_scan_params *params);
403 int wpa_driver_nl80211_sched_scan(void *priv,
404 				  struct wpa_driver_scan_params *params);
405 int wpa_driver_nl80211_stop_sched_scan(void *priv);
406 struct wpa_scan_results * wpa_driver_nl80211_get_scan_results(void *priv,
407 							      const u8 *bssid);
408 void nl80211_dump_scan(struct wpa_driver_nl80211_data *drv);
409 int wpa_driver_nl80211_abort_scan(void *priv, u64 scan_cookie);
410 int wpa_driver_nl80211_vendor_scan(struct i802_bss *bss,
411 				   struct wpa_driver_scan_params *params);
412 int nl80211_set_default_scan_ies(void *priv, const u8 *ies, size_t ies_len);
413 
414 #endif /* DRIVER_NL80211_H */
415