summaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.h
blob: 48414e8b93890dde49298c6c11c83786e9fe4cef (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
// SPDX-License-Identifier: ISC
/*
 * Copyright (c) 2012 Broadcom Corporation
 */


#ifndef FWEH_H_
#define FWEH_H_

#include <asm/unaligned.h>
#include <linux/skbuff.h>
#include <linux/if_ether.h>
#include <linux/if.h>

/* formward declarations */
struct brcmf_pub;
struct brcmf_if;
struct brcmf_cfg80211_info;

/* list of firmware events */
#define BRCMF_FWEH_EVENT_ENUM_DEFLIST \
	BRCMF_ENUM_DEF(SET_SSID, 0) \
	BRCMF_ENUM_DEF(JOIN, 1) \
	BRCMF_ENUM_DEF(START, 2) \
	BRCMF_ENUM_DEF(AUTH, 3) \
	BRCMF_ENUM_DEF(AUTH_IND, 4) \
	BRCMF_ENUM_DEF(DEAUTH, 5) \
	BRCMF_ENUM_DEF(DEAUTH_IND, 6) \
	BRCMF_ENUM_DEF(ASSOC, 7) \
	BRCMF_ENUM_DEF(ASSOC_IND, 8) \
	BRCMF_ENUM_DEF(REASSOC, 9) \
	BRCMF_ENUM_DEF(REASSOC_IND, 10) \
	BRCMF_ENUM_DEF(DISASSOC, 11) \
	BRCMF_ENUM_DEF(DISASSOC_IND, 12) \
	BRCMF_ENUM_DEF(QUIET_START, 13) \
	BRCMF_ENUM_DEF(QUIET_END, 14) \
	BRCMF_ENUM_DEF(BEACON_RX, 15) \
	BRCMF_ENUM_DEF(LINK, 16) \
	BRCMF_ENUM_DEF(MIC_ERROR, 17) \
	BRCMF_ENUM_DEF(NDIS_LINK, 18) \
	BRCMF_ENUM_DEF(ROAM, 19) \
	BRCMF_ENUM_DEF(TXFAIL, 20) \
	BRCMF_ENUM_DEF(PMKID_CACHE, 21) \
	BRCMF_ENUM_DEF(RETROGRADE_TSF, 22) \
	BRCMF_ENUM_DEF(PRUNE, 23) \
	BRCMF_ENUM_DEF(AUTOAUTH, 24) \
	BRCMF_ENUM_DEF(EAPOL_MSG, 25) \
	BRCMF_ENUM_DEF(SCAN_COMPLETE, 26) \
	BRCMF_ENUM_DEF(ADDTS_IND, 27) \
	BRCMF_ENUM_DEF(DELTS_IND, 28) \
	BRCMF_ENUM_DEF(BCNSENT_IND, 29) \
	BRCMF_ENUM_DEF(BCNRX_MSG, 30) \
	BRCMF_ENUM_DEF(BCNLOST_MSG, 31) \
	BRCMF_ENUM_DEF(ROAM_PREP, 32) \
	BRCMF_ENUM_DEF(PFN_NET_FOUND, 33) \
	BRCMF_ENUM_DEF(PFN_NET_LOST, 34) \
	BRCMF_ENUM_DEF(RESET_COMPLETE, 35) \
	BRCMF_ENUM_DEF(JOIN_START, 36) \
	BRCMF_ENUM_DEF(ROAM_START, 37) \
	BRCMF_ENUM_DEF(ASSOC_START, 38) \
	BRCMF_ENUM_DEF(IBSS_ASSOC, 39) \
	BRCMF_ENUM_DEF(RADIO, 40) \
	BRCMF_ENUM_DEF(PSM_WATCHDOG, 41) \
	BRCMF_ENUM_DEF(PROBREQ_MSG, 44) \
	BRCMF_ENUM_DEF(SCAN_CONFIRM_IND, 45) \
	BRCMF_ENUM_DEF(PSK_SUP, 46) \
	BRCMF_ENUM_DEF(COUNTRY_CODE_CHANGED, 47) \
	BRCMF_ENUM_DEF(EXCEEDED_MEDIUM_TIME, 48) \
	BRCMF_ENUM_DEF(ICV_ERROR, 49) \
	BRCMF_ENUM_DEF(UNICAST_DECODE_ERROR, 50) \
	BRCMF_ENUM_DEF(MULTICAST_DECODE_ERROR, 51) \
	BRCMF_ENUM_DEF(TRACE, 52) \
	BRCMF_ENUM_DEF(IF, 54) \
	BRCMF_ENUM_DEF(P2P_DISC_LISTEN_COMPLETE, 55) \
	BRCMF_ENUM_DEF(RSSI, 56) \
	BRCMF_ENUM_DEF(EXTLOG_MSG, 58) \
	BRCMF_ENUM_DEF(ACTION_FRAME, 59) \
	BRCMF_ENUM_DEF(ACTION_FRAME_COMPLETE, 60) \
	BRCMF_ENUM_DEF(PRE_ASSOC_IND, 61) \
	BRCMF_ENUM_DEF(PRE_REASSOC_IND, 62) \
	BRCMF_ENUM_DEF(CHANNEL_ADOPTED, 63) \
	BRCMF_ENUM_DEF(AP_STARTED, 64) \
	BRCMF_ENUM_DEF(DFS_AP_STOP, 65) \
	BRCMF_ENUM_DEF(DFS_AP_RESUME, 66) \
	BRCMF_ENUM_DEF(ESCAN_RESULT, 69) \
	BRCMF_ENUM_DEF(ACTION_FRAME_OFF_CHAN_COMPLETE, 70) \
	BRCMF_ENUM_DEF(PROBERESP_MSG, 71) \
	BRCMF_ENUM_DEF(P2P_PROBEREQ_MSG, 72) \
	BRCMF_ENUM_DEF(DCS_REQUEST, 73) \
	BRCMF_ENUM_DEF(FIFO_CREDIT_MAP, 74) \
	BRCMF_ENUM_DEF(ACTION_FRAME_RX, 75) \
	BRCMF_ENUM_DEF(TDLS_PEER_EVENT, 92) \
	BRCMF_ENUM_DEF(BCMC_CREDIT_SUPPORT, 127)

#define BRCMF_ENUM_DEF(id, val) \
	BRCMF_E_##id = (val),

/* firmware event codes sent by the dongle */
enum brcmf_fweh_event_code {
	BRCMF_FWEH_EVENT_ENUM_DEFLIST
	/* this determines event mask length which must match
	 * minimum length check in device firmware so it is
	 * hard-coded here.
	 */
	BRCMF_E_LAST = 139
};
#undef BRCMF_ENUM_DEF

#define BRCMF_EVENTING_MASK_LEN		DIV_ROUND_UP(BRCMF_E_LAST, 8)

/* flags field values in struct brcmf_event_msg */
#define BRCMF_EVENT_MSG_LINK		0x01
#define BRCMF_EVENT_MSG_FLUSHTXQ	0x02
#define BRCMF_EVENT_MSG_GROUP		0x04

/* status field values in struct brcmf_event_msg */
#define BRCMF_E_STATUS_SUCCESS			0
#define BRCMF_E_STATUS_FAIL			1
#define BRCMF_E_STATUS_TIMEOUT			2
#define BRCMF_E_STATUS_NO_NETWORKS		3
#define BRCMF_E_STATUS_ABORT			4
#define BRCMF_E_STATUS_NO_ACK			5
#define BRCMF_E_STATUS_UNSOLICITED		6
#define BRCMF_E_STATUS_ATTEMPT			7
#define BRCMF_E_STATUS_PARTIAL			8
#define BRCMF_E_STATUS_NEWSCAN			9
#define BRCMF_E_STATUS_NEWASSOC			10
#define BRCMF_E_STATUS_11HQUIET			11
#define BRCMF_E_STATUS_SUPPRESS			12
#define BRCMF_E_STATUS_NOCHANS			13
#define BRCMF_E_STATUS_CS_ABORT			15
#define BRCMF_E_STATUS_ERROR			16

/* status field values for PSK_SUP event */
#define BRCMF_E_STATUS_FWSUP_WAIT_M1		4
#define BRCMF_E_STATUS_FWSUP_PREP_M2		5
#define BRCMF_E_STATUS_FWSUP_COMPLETED		6
#define BRCMF_E_STATUS_FWSUP_TIMEOUT		7
#define BRCMF_E_STATUS_FWSUP_WAIT_M3		8
#define BRCMF_E_STATUS_FWSUP_PREP_M4		9
#define BRCMF_E_STATUS_FWSUP_WAIT_G1		10
#define BRCMF_E_STATUS_FWSUP_PREP_G2		11

/* reason field values in struct brcmf_event_msg */
#define BRCMF_E_REASON_INITIAL_ASSOC		0
#define BRCMF_E_REASON_LOW_RSSI			1
#define BRCMF_E_REASON_DEAUTH			2
#define BRCMF_E_REASON_DISASSOC			3
#define BRCMF_E_REASON_BCNS_LOST		4
#define BRCMF_E_REASON_MINTXRATE		9
#define BRCMF_E_REASON_TXFAIL			10

#define BRCMF_E_REASON_LINK_BSSCFG_DIS		4
#define BRCMF_E_REASON_FAST_ROAM_FAILED		5
#define BRCMF_E_REASON_DIRECTED_ROAM		6
#define BRCMF_E_REASON_TSPEC_REJECTED		7
#define BRCMF_E_REASON_BETTER_AP		8

#define BRCMF_E_REASON_TDLS_PEER_DISCOVERED	0
#define BRCMF_E_REASON_TDLS_PEER_CONNECTED	1
#define BRCMF_E_REASON_TDLS_PEER_DISCONNECTED	2

/* reason field values for PSK_SUP event */
#define BRCMF_E_REASON_FWSUP_OTHER		0
#define BRCMF_E_REASON_FWSUP_DECRYPT_KEY_DATA	1
#define BRCMF_E_REASON_FWSUP_BAD_UCAST_WEP128	2
#define BRCMF_E_REASON_FWSUP_BAD_UCAST_WEP40	3
#define BRCMF_E_REASON_FWSUP_UNSUP_KEY_LEN	4
#define BRCMF_E_REASON_FWSUP_PW_KEY_CIPHER	5
#define BRCMF_E_REASON_FWSUP_MSG3_TOO_MANY_IE	6
#define BRCMF_E_REASON_FWSUP_MSG3_IE_MISMATCH	7
#define BRCMF_E_REASON_FWSUP_NO_INSTALL_FLAG	8
#define BRCMF_E_REASON_FWSUP_MSG3_NO_GTK	9
#define BRCMF_E_REASON_FWSUP_GRP_KEY_CIPHER	10
#define BRCMF_E_REASON_FWSUP_GRP_MSG1_NO_GTK	11
#define BRCMF_E_REASON_FWSUP_GTK_DECRYPT_FAIL	12
#define BRCMF_E_REASON_FWSUP_SEND_FAIL		13
#define BRCMF_E_REASON_FWSUP_DEAUTH		14
#define BRCMF_E_REASON_FWSUP_WPA_PSK_TMO	15
#define BRCMF_E_REASON_FWSUP_WPA_PSK_M1_TMO	16
#define BRCMF_E_REASON_FWSUP_WPA_PSK_M3_TMO	17

/* action field values for brcmf_ifevent */
#define BRCMF_E_IF_ADD				1
#define BRCMF_E_IF_DEL				2
#define BRCMF_E_IF_CHANGE			3

/* flag field values for brcmf_ifevent */
#define BRCMF_E_IF_FLAG_NOIF			1

/* role field values for brcmf_ifevent */
#define BRCMF_E_IF_ROLE_STA			0
#define BRCMF_E_IF_ROLE_AP			1
#define BRCMF_E_IF_ROLE_WDS			2
#define BRCMF_E_IF_ROLE_P2P_GO			3
#define BRCMF_E_IF_ROLE_P2P_CLIENT		4

/**
 * definitions for event packet validation.
 */
#define BRCM_OUI				"\x00\x10\x18"
#define BCMILCP_BCM_SUBTYPE_EVENT		1
#define BCMILCP_SUBTYPE_VENDOR_LONG		32769

/**
 * struct brcm_ethhdr - broadcom specific ether header.
 *
 * @subtype: subtype for this packet.
 * @length: TODO: length of appended data.
 * @version: version indication.
 * @oui: OUI of this packet.
 * @usr_subtype: subtype for this OUI.
 */
struct brcm_ethhdr {
	__be16 subtype;
	__be16 length;
	u8 version;
	u8 oui[3];
	__be16 usr_subtype;
} __packed;

struct brcmf_event_msg_be {
	__be16 version;
	__be16 flags;
	__be32 event_type;
	__be32 status;
	__be32 reason;
	__be32 auth_type;
	__be32 datalen;
	u8 addr[ETH_ALEN];
	char ifname[IFNAMSIZ];
	u8 ifidx;
	u8 bsscfgidx;
} __packed;

/**
 * struct brcmf_event - contents of broadcom event packet.
 *
 * @eth: standard ether header.
 * @hdr: broadcom specific ether header.
 * @msg: common part of the actual event message.
 */
struct brcmf_event {
	struct ethhdr eth;
	struct brcm_ethhdr hdr;
	struct brcmf_event_msg_be msg;
} __packed;

/**
 * struct brcmf_event_msg - firmware event message.
 *
 * @version: version information.
 * @flags: event flags.
 * @event_code: firmware event code.
 * @status: status information.
 * @reason: reason code.
 * @auth_type: authentication type.
 * @datalen: length of event data buffer.
 * @addr: ether address.
 * @ifname: interface name.
 * @ifidx: interface index.
 * @bsscfgidx: bsscfg index.
 */
struct brcmf_event_msg {
	u16 version;
	u16 flags;
	u32 event_code;
	u32 status;
	u32 reason;
	s32 auth_type;
	u32 datalen;
	u8 addr[ETH_ALEN];
	char ifname[IFNAMSIZ];
	u8 ifidx;
	u8 bsscfgidx;
};

struct brcmf_if_event {
	u8 ifidx;
	u8 action;
	u8 flags;
	u8 bsscfgidx;
	u8 role;
};

typedef int (*brcmf_fweh_handler_t)(struct brcmf_if *ifp,
				    const struct brcmf_event_msg *evtmsg,
				    void *data);

/**
 * struct brcmf_fweh_info - firmware event handling information.
 *
 * @p2pdev_setup_ongoing: P2P device creation in progress.
 * @event_work: event worker.
 * @evt_q_lock: lock for event queue protection.
 * @event_q: event queue.
 * @evt_handler: registered event handlers.
 */
struct brcmf_fweh_info {
	bool p2pdev_setup_ongoing;
	struct work_struct event_work;
	spinlock_t evt_q_lock;
	struct list_head event_q;
	int (*evt_handler[BRCMF_E_LAST])(struct brcmf_if *ifp,
					 const struct brcmf_event_msg *evtmsg,
					 void *data);
};

const char *brcmf_fweh_event_name(enum brcmf_fweh_event_code code);

void brcmf_fweh_attach(struct brcmf_pub *drvr);
void brcmf_fweh_detach(struct brcmf_pub *drvr);
int brcmf_fweh_register(struct brcmf_pub *drvr, enum brcmf_fweh_event_code code,
			int (*handler)(struct brcmf_if *ifp,
				       const struct brcmf_event_msg *evtmsg,
				       void *data));
void brcmf_fweh_unregister(struct brcmf_pub *drvr,
			   enum brcmf_fweh_event_code code);
int brcmf_fweh_activate_events(struct brcmf_if *ifp);
void brcmf_fweh_process_event(struct brcmf_pub *drvr,
			      struct brcmf_event *event_packet,
			      u32 packet_len, gfp_t gfp);
void brcmf_fweh_p2pdev_setup(struct brcmf_if *ifp, bool ongoing);

static inline void brcmf_fweh_process_skb(struct brcmf_pub *drvr,
					  struct sk_buff *skb, u16 stype,
					  gfp_t gfp)
{
	struct brcmf_event *event_packet;
	u16 subtype, usr_stype;

	/* only process events when protocol matches */
	if (skb->protocol != cpu_to_be16(ETH_P_LINK_CTL))
		return;

	if ((skb->len + ETH_HLEN) < sizeof(*event_packet))
		return;

	event_packet = (struct brcmf_event *)skb_mac_header(skb);

	/* check subtype if needed */
	if (unlikely(stype)) {
		subtype = get_unaligned_be16(&event_packet->hdr.subtype);
		if (subtype != stype)
			return;
	}

	/* check for BRCM oui match */
	if (memcmp(BRCM_OUI, &event_packet->hdr.oui[0],
		   sizeof(event_packet->hdr.oui)))
		return;

	/* final match on usr_subtype */
	usr_stype = get_unaligned_be16(&event_packet->hdr.usr_subtype);
	if (usr_stype != BCMILCP_BCM_SUBTYPE_EVENT)
		return;

	brcmf_fweh_process_event(drvr, event_packet, skb->len + ETH_HLEN, gfp);
}

#endif /* FWEH_H_ */