1 // SPDX-License-Identifier: ISC
2 /*
3  * Copyright (c) 2010 Broadcom Corporation
4  */
5 
6 #ifndef BRCMFMAC_CFG80211_H
7 #define BRCMFMAC_CFG80211_H
8 
9 /* for brcmu_d11inf */
10 #include <brcmu_d11.h>
11 
12 #include "core.h"
13 #include "fwil_types.h"
14 #include "p2p.h"
15 
16 #define BRCMF_SCAN_IE_LEN_MAX		2048
17 
18 #define WL_NUM_SCAN_MAX			10
19 #define WL_TLV_INFO_MAX			1024
20 #define WL_BSS_INFO_MAX			2048
21 #define WL_ASSOC_INFO_MAX		512	/* assoc related fil max buf */
22 #define WL_EXTRA_BUF_MAX		2048
23 #define WL_ROAM_TRIGGER_LEVEL		-75
24 #define WL_ROAM_DELTA			20
25 
26 /* WME Access Category Indices (ACIs) */
27 #define AC_BE			0	/* Best Effort */
28 #define AC_BK			1	/* Background */
29 #define AC_VI			2	/* Video */
30 #define AC_VO			3	/* Voice */
31 #define EDCF_AC_COUNT		4
32 #define MAX_8021D_PRIO		8
33 
34 #define EDCF_ACI_MASK			0x60
35 #define EDCF_ACI_SHIFT			5
36 #define EDCF_ACM_MASK                  0x10
37 #define EDCF_ECWMIN_MASK		0x0f
38 #define EDCF_ECWMAX_SHIFT		4
39 #define EDCF_AIFSN_MASK			0x0f
40 #define EDCF_AIFSN_MAX			15
41 #define EDCF_ECWMAX_MASK		0xf0
42 
43 /* Keep BRCMF_ESCAN_BUF_SIZE below 64K (65536). Allocing over 64K can be
44  * problematic on some systems and should be avoided.
45  */
46 #define BRCMF_ESCAN_BUF_SIZE		65000
47 #define BRCMF_ESCAN_TIMER_INTERVAL_MS	10000	/* E-Scan timeout */
48 
49 #define WL_ESCAN_ACTION_START		1
50 #define WL_ESCAN_ACTION_CONTINUE	2
51 #define WL_ESCAN_ACTION_ABORT		3
52 
53 #define WL_AUTH_SHARED_KEY		1	/* d11 shared authentication */
54 #define IE_MAX_LEN			512
55 
56 /* IE TLV processing */
57 #define TLV_LEN_OFF			1	/* length offset */
58 #define TLV_HDR_LEN			2	/* header length */
59 #define TLV_BODY_OFF			2	/* body offset */
60 #define TLV_OUI_LEN			3	/* oui id length */
61 
62 /* 802.11 Mgmt Packet flags */
63 #define BRCMF_VNDR_IE_BEACON_FLAG	0x1
64 #define BRCMF_VNDR_IE_PRBRSP_FLAG	0x2
65 #define BRCMF_VNDR_IE_ASSOCRSP_FLAG	0x4
66 #define BRCMF_VNDR_IE_AUTHRSP_FLAG	0x8
67 #define BRCMF_VNDR_IE_PRBREQ_FLAG	0x10
68 #define BRCMF_VNDR_IE_ASSOCREQ_FLAG	0x20
69 /* vendor IE in IW advertisement protocol ID field */
70 #define BRCMF_VNDR_IE_IWAPID_FLAG	0x40
71 /* allow custom IE id */
72 #define BRCMF_VNDR_IE_CUSTOM_FLAG	0x100
73 
74 /* P2P Action Frames flags (spec ordered) */
75 #define BRCMF_VNDR_IE_GONREQ_FLAG     0x001000
76 #define BRCMF_VNDR_IE_GONRSP_FLAG     0x002000
77 #define BRCMF_VNDR_IE_GONCFM_FLAG     0x004000
78 #define BRCMF_VNDR_IE_INVREQ_FLAG     0x008000
79 #define BRCMF_VNDR_IE_INVRSP_FLAG     0x010000
80 #define BRCMF_VNDR_IE_DISREQ_FLAG     0x020000
81 #define BRCMF_VNDR_IE_DISRSP_FLAG     0x040000
82 #define BRCMF_VNDR_IE_PRDREQ_FLAG     0x080000
83 #define BRCMF_VNDR_IE_PRDRSP_FLAG     0x100000
84 
85 #define BRCMF_VNDR_IE_P2PAF_SHIFT	12
86 
87 #define BRCMF_MAX_DEFAULT_KEYS		6
88 
89 /* beacon loss timeout defaults */
90 #define BRCMF_DEFAULT_BCN_TIMEOUT_ROAM_ON	2
91 #define BRCMF_DEFAULT_BCN_TIMEOUT_ROAM_OFF	4
92 
93 #define BRCMF_VIF_EVENT_TIMEOUT		msecs_to_jiffies(1500)
94 
95 /**
96  * enum brcmf_scan_status - scan engine status
97  *
98  * @BRCMF_SCAN_STATUS_BUSY: scanning in progress on dongle.
99  * @BRCMF_SCAN_STATUS_ABORT: scan being aborted on dongle.
100  * @BRCMF_SCAN_STATUS_SUPPRESS: scanning is suppressed in driver.
101  */
102 enum brcmf_scan_status {
103 	BRCMF_SCAN_STATUS_BUSY,
104 	BRCMF_SCAN_STATUS_ABORT,
105 	BRCMF_SCAN_STATUS_SUPPRESS,
106 };
107 
108 /* dongle configuration */
109 struct brcmf_cfg80211_conf {
110 	u32 frag_threshold;
111 	u32 rts_threshold;
112 	u32 retry_short;
113 	u32 retry_long;
114 };
115 
116 /* security information with currently associated ap */
117 struct brcmf_cfg80211_security {
118 	u32 wpa_versions;
119 	u32 auth_type;
120 	u32 cipher_pairwise;
121 	u32 cipher_group;
122 };
123 
124 enum brcmf_profile_fwsup {
125 	BRCMF_PROFILE_FWSUP_NONE,
126 	BRCMF_PROFILE_FWSUP_PSK,
127 	BRCMF_PROFILE_FWSUP_1X,
128 	BRCMF_PROFILE_FWSUP_SAE
129 };
130 
131 /**
132  * enum brcmf_profile_fwauth - firmware authenticator profile
133  *
134  * @BRCMF_PROFILE_FWAUTH_NONE: no firmware authenticator
135  * @BRCMF_PROFILE_FWAUTH_PSK: authenticator for WPA/WPA2-PSK
136  * @BRCMF_PROFILE_FWAUTH_SAE: authenticator for SAE
137  */
138 enum brcmf_profile_fwauth {
139 	BRCMF_PROFILE_FWAUTH_NONE,
140 	BRCMF_PROFILE_FWAUTH_PSK,
141 	BRCMF_PROFILE_FWAUTH_SAE
142 };
143 
144 /**
145  * struct brcmf_cfg80211_profile - profile information.
146  *
147  * @bssid: bssid of joined/joining ibss.
148  * @sec: security information.
149  * @key: key information
150  */
151 struct brcmf_cfg80211_profile {
152 	u8 bssid[ETH_ALEN];
153 	struct brcmf_cfg80211_security sec;
154 	struct brcmf_wsec_key key[BRCMF_MAX_DEFAULT_KEYS];
155 	enum brcmf_profile_fwsup use_fwsup;
156 	u16 use_fwauth;
157 	bool is_ft;
158 };
159 
160 /**
161  * enum brcmf_vif_status - bit indices for vif status.
162  *
163  * @BRCMF_VIF_STATUS_READY: ready for operation.
164  * @BRCMF_VIF_STATUS_CONNECTING: connect/join in progress.
165  * @BRCMF_VIF_STATUS_CONNECTED: connected/joined successfully.
166  * @BRCMF_VIF_STATUS_DISCONNECTING: disconnect/disable in progress.
167  * @BRCMF_VIF_STATUS_AP_CREATED: AP operation started.
168  * @BRCMF_VIF_STATUS_EAP_SUCCUSS: EAPOL handshake successful.
169  * @BRCMF_VIF_STATUS_ASSOC_SUCCESS: successful SET_SSID received.
170  */
171 enum brcmf_vif_status {
172 	BRCMF_VIF_STATUS_READY,
173 	BRCMF_VIF_STATUS_CONNECTING,
174 	BRCMF_VIF_STATUS_CONNECTED,
175 	BRCMF_VIF_STATUS_DISCONNECTING,
176 	BRCMF_VIF_STATUS_AP_CREATED,
177 	BRCMF_VIF_STATUS_EAP_SUCCESS,
178 	BRCMF_VIF_STATUS_ASSOC_SUCCESS,
179 };
180 
181 /**
182  * struct vif_saved_ie - holds saved IEs for a virtual interface.
183  *
184  * @probe_req_ie: IE info for probe request.
185  * @probe_res_ie: IE info for probe response.
186  * @beacon_ie: IE info for beacon frame.
187  * @assoc_res_ie: IE info for association response frame.
188  * @probe_req_ie_len: IE info length for probe request.
189  * @probe_res_ie_len: IE info length for probe response.
190  * @beacon_ie_len: IE info length for beacon frame.
191  * @assoc_res_ie_len: IE info length for association response frame.
192  */
193 struct vif_saved_ie {
194 	u8  probe_req_ie[IE_MAX_LEN];
195 	u8  probe_res_ie[IE_MAX_LEN];
196 	u8  beacon_ie[IE_MAX_LEN];
197 	u8  assoc_req_ie[IE_MAX_LEN];
198 	u8  assoc_res_ie[IE_MAX_LEN];
199 	u32 probe_req_ie_len;
200 	u32 probe_res_ie_len;
201 	u32 beacon_ie_len;
202 	u32 assoc_req_ie_len;
203 	u32 assoc_res_ie_len;
204 };
205 
206 /**
207  * struct brcmf_cfg80211_vif - virtual interface specific information.
208  *
209  * @ifp: lower layer interface pointer
210  * @wdev: wireless device.
211  * @profile: profile information.
212  * @sme_state: SME state using enum brcmf_vif_status bits.
213  * @list: linked list.
214  * @mgmt_rx_reg: registered rx mgmt frame types.
215  * @mbss: Multiple BSS type, set if not first AP (not relevant for P2P).
216  * @cqm_rssi_low: Lower RSSI limit for CQM monitoring
217  * @cqm_rssi_high: Upper RSSI limit for CQM monitoring
218  * @cqm_rssi_last: Last RSSI reading for CQM monitoring
219  */
220 struct brcmf_cfg80211_vif {
221 	struct brcmf_if *ifp;
222 	struct wireless_dev wdev;
223 	struct brcmf_cfg80211_profile profile;
224 	unsigned long sme_state;
225 	struct vif_saved_ie saved_ie;
226 	struct list_head list;
227 	u16 mgmt_rx_reg;
228 	bool mbss;
229 	int is_11d;
230 	s32 cqm_rssi_low;
231 	s32 cqm_rssi_high;
232 	s32 cqm_rssi_last;
233 };
234 
235 /* association inform */
236 struct brcmf_cfg80211_connect_info {
237 	u8 *req_ie;
238 	s32 req_ie_len;
239 	u8 *resp_ie;
240 	s32 resp_ie_len;
241 };
242 
243 /* assoc ie length */
244 struct brcmf_cfg80211_assoc_ielen_le {
245 	__le32 req_len;
246 	__le32 resp_len;
247 };
248 
249 struct brcmf_cfg80211_edcf_acparam {
250 	u8 ACI;
251 	u8 ECW;
252 	u16 TXOP;        /* stored in network order (ls octet first) */
253 };
254 
255 /* dongle escan state */
256 enum wl_escan_state {
257 	WL_ESCAN_STATE_IDLE,
258 	WL_ESCAN_STATE_SCANNING
259 };
260 
261 struct escan_info {
262 	u32 escan_state;
263 	u8 *escan_buf;
264 	struct wiphy *wiphy;
265 	struct brcmf_if *ifp;
266 	s32 (*run)(struct brcmf_cfg80211_info *cfg, struct brcmf_if *ifp,
267 		   struct cfg80211_scan_request *request);
268 };
269 
270 /**
271  * struct brcmf_cfg80211_vif_event - virtual interface event information.
272  *
273  * @vif_wq: waitqueue awaiting interface event from firmware.
274  * @vif_event_lock: protects other members in this structure.
275  * @vif_complete: completion for net attach.
276  * @action: either add, change, or delete.
277  * @vif: virtual interface object related to the event.
278  */
279 struct brcmf_cfg80211_vif_event {
280 	wait_queue_head_t vif_wq;
281 	spinlock_t vif_event_lock;
282 	u8 action;
283 	struct brcmf_cfg80211_vif *vif;
284 };
285 
286 /**
287  * struct brcmf_cfg80211_wowl - wowl related information.
288  *
289  * @active: set on suspend, cleared on resume.
290  * @pre_pmmode: firmware PM mode at entering suspend.
291  * @nd: net dectect data.
292  * @nd_info: helper struct to pass to cfg80211.
293  * @nd_data_wait: wait queue to sync net detect data.
294  * @nd_data_completed: completion for net detect data.
295  * @nd_enabled: net detect enabled.
296  */
297 struct brcmf_cfg80211_wowl {
298 	bool active;
299 	u32 pre_pmmode;
300 	struct cfg80211_wowlan_nd_match *nd;
301 	struct cfg80211_wowlan_nd_info *nd_info;
302 	wait_queue_head_t nd_data_wait;
303 	bool nd_data_completed;
304 	bool nd_enabled;
305 };
306 
307 /**
308  * struct brcmf_cfg80211_info - dongle private data of cfg80211 interface
309  *
310  * @wiphy: wiphy object for cfg80211 interface.
311  * @ops: pointer to copy of ops as registered with wiphy object.
312  * @conf: dongle configuration.
313  * @p2p: peer-to-peer specific information.
314  * @btcoex: Bluetooth coexistence information.
315  * @scan_request: cfg80211 scan request object.
316  * @usr_sync: mainly for dongle up/down synchronization.
317  * @bss_list: bss_list holding scanned ap information.
318  * @bss_info: bss information for cfg80211 layer.
319  * @conn_info: association info.
320  * @pmk_list: wpa2 pmk list.
321  * @scan_status: scan activity on the dongle.
322  * @pub: common driver information.
323  * @channel: current channel.
324  * @int_escan_map: bucket map for which internal e-scan is done.
325  * @ibss_starter: indicates this sta is ibss starter.
326  * @pwr_save: indicate whether dongle to support power save mode.
327  * @dongle_up: indicate whether dongle up or not.
328  * @roam_on: on/off switch for dongle self-roaming.
329  * @scan_tried: indicates if first scan attempted.
330  * @dcmd_buf: dcmd buffer.
331  * @extra_buf: mainly to grab assoc information.
332  * @debugfsdir: debugfs folder for this device.
333  * @escan_info: escan information.
334  * @escan_timeout: Timer for catch scan timeout.
335  * @escan_timeout_work: scan timeout worker.
336  * @vif_list: linked list of vif instances.
337  * @vif_cnt: number of vif instances.
338  * @vif_event: vif event signalling.
339  * @wowl: wowl related information.
340  * @pno: information of pno module.
341  */
342 struct brcmf_cfg80211_info {
343 	struct wiphy *wiphy;
344 	struct brcmf_cfg80211_conf *conf;
345 	struct brcmf_p2p_info p2p;
346 	struct brcmf_btcoex_info *btcoex;
347 	struct cfg80211_scan_request *scan_request;
348 	struct mutex usr_sync;
349 	struct wl_cfg80211_bss_info *bss_info;
350 	struct brcmf_cfg80211_connect_info conn_info;
351 	struct brcmf_pmk_list_le pmk_list;
352 	unsigned long scan_status;
353 	struct brcmf_pub *pub;
354 	u32 channel;
355 	u32 int_escan_map;
356 	bool ibss_starter;
357 	bool pwr_save;
358 	bool dongle_up;
359 	bool scan_tried;
360 	u8 *dcmd_buf;
361 	u8 *extra_buf;
362 	struct dentry *debugfsdir;
363 	struct escan_info escan_info;
364 	struct timer_list escan_timeout;
365 	struct work_struct escan_timeout_work;
366 	struct list_head vif_list;
367 	struct brcmf_cfg80211_vif_event vif_event;
368 	struct completion vif_disabled;
369 	struct brcmu_d11inf d11inf;
370 	struct brcmf_assoclist_le assoclist;
371 	struct brcmf_cfg80211_wowl wowl;
372 	struct brcmf_pno_info *pno;
373 	u8 ac_priority[MAX_8021D_PRIO];
374 };
375 
376 /**
377  * struct brcmf_tlv - tag_ID/length/value_buffer tuple.
378  *
379  * @id: tag identifier.
380  * @len: number of bytes in value buffer.
381  * @data: value buffer.
382  */
383 struct brcmf_tlv {
384 	u8 id;
385 	u8 len;
386 	u8 data[1];
387 };
388 
cfg_to_wiphy(struct brcmf_cfg80211_info * cfg)389 static inline struct wiphy *cfg_to_wiphy(struct brcmf_cfg80211_info *cfg)
390 {
391 	return cfg->wiphy;
392 }
393 
wiphy_to_cfg(struct wiphy * w)394 static inline struct brcmf_cfg80211_info *wiphy_to_cfg(struct wiphy *w)
395 {
396 	struct brcmf_pub *drvr = wiphy_priv(w);
397 	return drvr->config;
398 }
399 
wdev_to_cfg(struct wireless_dev * wd)400 static inline struct brcmf_cfg80211_info *wdev_to_cfg(struct wireless_dev *wd)
401 {
402 	return wiphy_to_cfg(wd->wiphy);
403 }
404 
wdev_to_vif(struct wireless_dev * wdev)405 static inline struct brcmf_cfg80211_vif *wdev_to_vif(struct wireless_dev *wdev)
406 {
407 	return container_of(wdev, struct brcmf_cfg80211_vif, wdev);
408 }
409 
410 static inline
cfg_to_ndev(struct brcmf_cfg80211_info * cfg)411 struct net_device *cfg_to_ndev(struct brcmf_cfg80211_info *cfg)
412 {
413 	return brcmf_get_ifp(cfg->pub, 0)->ndev;
414 }
415 
ndev_to_cfg(struct net_device * ndev)416 static inline struct brcmf_cfg80211_info *ndev_to_cfg(struct net_device *ndev)
417 {
418 	return wdev_to_cfg(ndev->ieee80211_ptr);
419 }
420 
ndev_to_prof(struct net_device * nd)421 static inline struct brcmf_cfg80211_profile *ndev_to_prof(struct net_device *nd)
422 {
423 	struct brcmf_if *ifp = netdev_priv(nd);
424 	return &ifp->vif->profile;
425 }
426 
ndev_to_vif(struct net_device * ndev)427 static inline struct brcmf_cfg80211_vif *ndev_to_vif(struct net_device *ndev)
428 {
429 	struct brcmf_if *ifp = netdev_priv(ndev);
430 	return ifp->vif;
431 }
432 
433 static inline struct
cfg_to_conn(struct brcmf_cfg80211_info * cfg)434 brcmf_cfg80211_connect_info *cfg_to_conn(struct brcmf_cfg80211_info *cfg)
435 {
436 	return &cfg->conn_info;
437 }
438 
439 struct brcmf_cfg80211_info *brcmf_cfg80211_attach(struct brcmf_pub *drvr,
440 						  struct cfg80211_ops *ops,
441 						  bool p2pdev_forced);
442 void brcmf_cfg80211_detach(struct brcmf_cfg80211_info *cfg);
443 s32 brcmf_cfg80211_up(struct net_device *ndev);
444 s32 brcmf_cfg80211_down(struct net_device *ndev);
445 struct cfg80211_ops *brcmf_cfg80211_get_ops(struct brcmf_mp_device *settings);
446 enum nl80211_iftype brcmf_cfg80211_get_iftype(struct brcmf_if *ifp);
447 
448 struct brcmf_cfg80211_vif *brcmf_alloc_vif(struct brcmf_cfg80211_info *cfg,
449 					   enum nl80211_iftype type);
450 void brcmf_free_vif(struct brcmf_cfg80211_vif *vif);
451 
452 s32 brcmf_vif_set_mgmt_ie(struct brcmf_cfg80211_vif *vif, s32 pktflag,
453 			  const u8 *vndr_ie_buf, u32 vndr_ie_len);
454 s32 brcmf_vif_clear_mgmt_ies(struct brcmf_cfg80211_vif *vif);
455 u16 channel_to_chanspec(struct brcmu_d11inf *d11inf,
456 			struct ieee80211_channel *ch);
457 bool brcmf_get_vif_state_any(struct brcmf_cfg80211_info *cfg,
458 			     unsigned long state);
459 void brcmf_cfg80211_arm_vif_event(struct brcmf_cfg80211_info *cfg,
460 				  struct brcmf_cfg80211_vif *vif);
461 bool brcmf_cfg80211_vif_event_armed(struct brcmf_cfg80211_info *cfg);
462 int brcmf_cfg80211_wait_vif_event(struct brcmf_cfg80211_info *cfg,
463 				  u8 action, ulong timeout);
464 s32 brcmf_notify_escan_complete(struct brcmf_cfg80211_info *cfg,
465 				struct brcmf_if *ifp, bool aborted,
466 				bool fw_abort);
467 void brcmf_set_mpc(struct brcmf_if *ndev, int mpc);
468 void brcmf_abort_scanning(struct brcmf_cfg80211_info *cfg);
469 void brcmf_cfg80211_free_netdev(struct net_device *ndev);
470 
471 #endif /* BRCMFMAC_CFG80211_H */
472