1
2
3
4
5#include <linux/netdevice.h>
6
7#include "brcmu_wifi.h"
8#include "brcmu_utils.h"
9
10#include "cfg80211.h"
11#include "core.h"
12#include "debug.h"
13#include "tracepoint.h"
14#include "fweh.h"
15#include "fwil.h"
16#include "proto.h"
17
18
19
20
21
22
23
24
25
26
27
28
29struct brcmf_fweh_queue_item {
30 struct list_head q;
31 enum brcmf_fweh_event_code code;
32 u8 ifidx;
33 u8 ifaddr[ETH_ALEN];
34 struct brcmf_event_msg_be emsg;
35 u32 datalen;
36 u8 data[];
37};
38
39
40
41
42struct brcmf_fweh_event_name {
43 enum brcmf_fweh_event_code code;
44 const char *name;
45};
46
47#ifdef DEBUG
48#define BRCMF_ENUM_DEF(id, val) \
49 { val, #id },
50
51
52static struct brcmf_fweh_event_name fweh_event_names[] = {
53 BRCMF_FWEH_EVENT_ENUM_DEFLIST
54};
55#undef BRCMF_ENUM_DEF
56
57
58
59
60
61
62const char *brcmf_fweh_event_name(enum brcmf_fweh_event_code code)
63{
64 int i;
65 for (i = 0; i < ARRAY_SIZE(fweh_event_names); i++) {
66 if (fweh_event_names[i].code == code)
67 return fweh_event_names[i].name;
68 }
69 return "unknown";
70}
71#else
72const char *brcmf_fweh_event_name(enum brcmf_fweh_event_code code)
73{
74 return "nodebug";
75}
76#endif
77
78
79
80
81
82
83
84static void brcmf_fweh_queue_event(struct brcmf_fweh_info *fweh,
85 struct brcmf_fweh_queue_item *event)
86{
87 ulong flags;
88
89 spin_lock_irqsave(&fweh->evt_q_lock, flags);
90 list_add_tail(&event->q, &fweh->event_q);
91 spin_unlock_irqrestore(&fweh->evt_q_lock, flags);
92 schedule_work(&fweh->event_work);
93}
94
95static int brcmf_fweh_call_event_handler(struct brcmf_pub *drvr,
96 struct brcmf_if *ifp,
97 enum brcmf_fweh_event_code code,
98 struct brcmf_event_msg *emsg,
99 void *data)
100{
101 struct brcmf_fweh_info *fweh;
102 int err = -EINVAL;
103
104 if (ifp) {
105 fweh = &ifp->drvr->fweh;
106
107
108 if (fweh->evt_handler[code])
109 err = fweh->evt_handler[code](ifp, emsg, data);
110 else
111 bphy_err(drvr, "unhandled event %d ignored\n", code);
112 } else {
113 bphy_err(drvr, "no interface object\n");
114 }
115 return err;
116}
117
118
119
120
121
122
123
124
125static void brcmf_fweh_handle_if_event(struct brcmf_pub *drvr,
126 struct brcmf_event_msg *emsg,
127 void *data)
128{
129 struct brcmf_if_event *ifevent = data;
130 struct brcmf_if *ifp;
131 bool is_p2pdev;
132
133 brcmf_dbg(EVENT, "action: %u ifidx: %u bsscfgidx: %u flags: %u role: %u\n",
134 ifevent->action, ifevent->ifidx, ifevent->bsscfgidx,
135 ifevent->flags, ifevent->role);
136
137
138
139
140
141
142 is_p2pdev = ((ifevent->flags & BRCMF_E_IF_FLAG_NOIF) &&
143 (ifevent->role == BRCMF_E_IF_ROLE_P2P_CLIENT ||
144 ((ifevent->role == BRCMF_E_IF_ROLE_STA) &&
145 (drvr->fweh.p2pdev_setup_ongoing))));
146 if (!is_p2pdev && (ifevent->flags & BRCMF_E_IF_FLAG_NOIF)) {
147 brcmf_dbg(EVENT, "event can be ignored\n");
148 return;
149 }
150 if (ifevent->ifidx >= BRCMF_MAX_IFS) {
151 bphy_err(drvr, "invalid interface index: %u\n", ifevent->ifidx);
152 return;
153 }
154
155 ifp = drvr->iflist[ifevent->bsscfgidx];
156
157 if (ifevent->action == BRCMF_E_IF_ADD) {
158 brcmf_dbg(EVENT, "adding %s (%pM)\n", emsg->ifname,
159 emsg->addr);
160 ifp = brcmf_add_if(drvr, ifevent->bsscfgidx, ifevent->ifidx,
161 is_p2pdev, emsg->ifname, emsg->addr);
162 if (IS_ERR(ifp))
163 return;
164 if (!is_p2pdev)
165 brcmf_proto_add_if(drvr, ifp);
166 if (!drvr->fweh.evt_handler[BRCMF_E_IF])
167 if (brcmf_net_attach(ifp, false) < 0)
168 return;
169 }
170
171 if (ifp && ifevent->action == BRCMF_E_IF_CHANGE)
172 brcmf_proto_reset_if(drvr, ifp);
173
174 brcmf_fweh_call_event_handler(drvr, ifp, emsg->event_code, emsg,
175 data);
176
177 if (ifp && ifevent->action == BRCMF_E_IF_DEL) {
178 bool armed = brcmf_cfg80211_vif_event_armed(drvr->config);
179
180
181 if (!armed)
182 brcmf_remove_interface(ifp, false);
183 }
184}
185
186
187
188
189
190
191static struct brcmf_fweh_queue_item *
192brcmf_fweh_dequeue_event(struct brcmf_fweh_info *fweh)
193{
194 struct brcmf_fweh_queue_item *event = NULL;
195 ulong flags;
196
197 spin_lock_irqsave(&fweh->evt_q_lock, flags);
198 if (!list_empty(&fweh->event_q)) {
199 event = list_first_entry(&fweh->event_q,
200 struct brcmf_fweh_queue_item, q);
201 list_del(&event->q);
202 }
203 spin_unlock_irqrestore(&fweh->evt_q_lock, flags);
204
205 return event;
206}
207
208
209
210
211
212
213static void brcmf_fweh_event_worker(struct work_struct *work)
214{
215 struct brcmf_pub *drvr;
216 struct brcmf_if *ifp;
217 struct brcmf_fweh_info *fweh;
218 struct brcmf_fweh_queue_item *event;
219 int err = 0;
220 struct brcmf_event_msg_be *emsg_be;
221 struct brcmf_event_msg emsg;
222
223 fweh = container_of(work, struct brcmf_fweh_info, event_work);
224 drvr = container_of(fweh, struct brcmf_pub, fweh);
225
226 while ((event = brcmf_fweh_dequeue_event(fweh))) {
227 brcmf_dbg(EVENT, "event %s (%u) ifidx %u bsscfg %u addr %pM\n",
228 brcmf_fweh_event_name(event->code), event->code,
229 event->emsg.ifidx, event->emsg.bsscfgidx,
230 event->emsg.addr);
231
232
233 emsg_be = &event->emsg;
234 emsg.version = be16_to_cpu(emsg_be->version);
235 emsg.flags = be16_to_cpu(emsg_be->flags);
236 emsg.event_code = event->code;
237 emsg.status = be32_to_cpu(emsg_be->status);
238 emsg.reason = be32_to_cpu(emsg_be->reason);
239 emsg.auth_type = be32_to_cpu(emsg_be->auth_type);
240 emsg.datalen = be32_to_cpu(emsg_be->datalen);
241 memcpy(emsg.addr, emsg_be->addr, ETH_ALEN);
242 memcpy(emsg.ifname, emsg_be->ifname, sizeof(emsg.ifname));
243 emsg.ifidx = emsg_be->ifidx;
244 emsg.bsscfgidx = emsg_be->bsscfgidx;
245
246 brcmf_dbg(EVENT, " version %u flags %u status %u reason %u\n",
247 emsg.version, emsg.flags, emsg.status, emsg.reason);
248 brcmf_dbg_hex_dump(BRCMF_EVENT_ON(), event->data,
249 min_t(u32, emsg.datalen, 64),
250 "event payload, len=%d\n", emsg.datalen);
251
252
253 if (event->code == BRCMF_E_IF) {
254 brcmf_fweh_handle_if_event(drvr, &emsg, event->data);
255 goto event_free;
256 }
257
258 if (event->code == BRCMF_E_TDLS_PEER_EVENT)
259 ifp = drvr->iflist[0];
260 else
261 ifp = drvr->iflist[emsg.bsscfgidx];
262 err = brcmf_fweh_call_event_handler(drvr, ifp, event->code,
263 &emsg, event->data);
264 if (err) {
265 bphy_err(drvr, "event handler failed (%d)\n",
266 event->code);
267 err = 0;
268 }
269event_free:
270 kfree(event);
271 }
272}
273
274
275
276
277
278
279
280void brcmf_fweh_p2pdev_setup(struct brcmf_if *ifp, bool ongoing)
281{
282 ifp->drvr->fweh.p2pdev_setup_ongoing = ongoing;
283}
284
285
286
287
288
289
290void brcmf_fweh_attach(struct brcmf_pub *drvr)
291{
292 struct brcmf_fweh_info *fweh = &drvr->fweh;
293 INIT_WORK(&fweh->event_work, brcmf_fweh_event_worker);
294 spin_lock_init(&fweh->evt_q_lock);
295 INIT_LIST_HEAD(&fweh->event_q);
296}
297
298
299
300
301
302
303void brcmf_fweh_detach(struct brcmf_pub *drvr)
304{
305 struct brcmf_fweh_info *fweh = &drvr->fweh;
306
307
308 if (fweh->event_work.func) {
309 cancel_work_sync(&fweh->event_work);
310 WARN_ON(!list_empty(&fweh->event_q));
311 memset(fweh->evt_handler, 0, sizeof(fweh->evt_handler));
312 }
313}
314
315
316
317
318
319
320
321
322int brcmf_fweh_register(struct brcmf_pub *drvr, enum brcmf_fweh_event_code code,
323 brcmf_fweh_handler_t handler)
324{
325 if (drvr->fweh.evt_handler[code]) {
326 bphy_err(drvr, "event code %d already registered\n", code);
327 return -ENOSPC;
328 }
329 drvr->fweh.evt_handler[code] = handler;
330 brcmf_dbg(TRACE, "event handler registered for %s\n",
331 brcmf_fweh_event_name(code));
332 return 0;
333}
334
335
336
337
338
339
340
341void brcmf_fweh_unregister(struct brcmf_pub *drvr,
342 enum brcmf_fweh_event_code code)
343{
344 brcmf_dbg(TRACE, "event handler cleared for %s\n",
345 brcmf_fweh_event_name(code));
346 drvr->fweh.evt_handler[code] = NULL;
347}
348
349
350
351
352
353
354int brcmf_fweh_activate_events(struct brcmf_if *ifp)
355{
356 struct brcmf_pub *drvr = ifp->drvr;
357 int i, err;
358 s8 eventmask[BRCMF_EVENTING_MASK_LEN];
359
360 memset(eventmask, 0, sizeof(eventmask));
361 for (i = 0; i < BRCMF_E_LAST; i++) {
362 if (ifp->drvr->fweh.evt_handler[i]) {
363 brcmf_dbg(EVENT, "enable event %s\n",
364 brcmf_fweh_event_name(i));
365 setbit(eventmask, i);
366 }
367 }
368
369
370 brcmf_dbg(EVENT, "enable event IF\n");
371 setbit(eventmask, BRCMF_E_IF);
372
373 err = brcmf_fil_iovar_data_set(ifp, "event_msgs",
374 eventmask, BRCMF_EVENTING_MASK_LEN);
375 if (err)
376 bphy_err(drvr, "Set event_msgs error (%d)\n", err);
377
378 return err;
379}
380
381
382
383
384
385
386
387
388
389
390
391
392void brcmf_fweh_process_event(struct brcmf_pub *drvr,
393 struct brcmf_event *event_packet,
394 u32 packet_len, gfp_t gfp)
395{
396 enum brcmf_fweh_event_code code;
397 struct brcmf_fweh_info *fweh = &drvr->fweh;
398 struct brcmf_fweh_queue_item *event;
399 void *data;
400 u32 datalen;
401
402
403 code = get_unaligned_be32(&event_packet->msg.event_type);
404 datalen = get_unaligned_be32(&event_packet->msg.datalen);
405 data = &event_packet[1];
406
407 if (code >= BRCMF_E_LAST)
408 return;
409
410 if (code != BRCMF_E_IF && !fweh->evt_handler[code])
411 return;
412
413 if (datalen > BRCMF_DCMD_MAXLEN ||
414 datalen + sizeof(*event_packet) > packet_len)
415 return;
416
417 event = kzalloc(sizeof(*event) + datalen, gfp);
418 if (!event)
419 return;
420
421 event->code = code;
422 event->ifidx = event_packet->msg.ifidx;
423
424
425 memcpy(&event->emsg, &event_packet->msg, sizeof(event->emsg));
426 memcpy(event->data, data, datalen);
427 event->datalen = datalen;
428 memcpy(event->ifaddr, event_packet->eth.h_dest, ETH_ALEN);
429
430 brcmf_fweh_queue_event(fweh, event);
431}
432