This source file includes following definitions.
- brcmf_p2p_is_pub_action
- brcmf_p2p_is_p2p_action
- brcmf_p2p_is_gas_action
- brcmf_p2p_print_actframe
- brcmf_p2p_print_actframe
- brcmf_p2p_set_firmware
- brcmf_p2p_generate_bss_mac
- brcmf_p2p_scan_is_p2p_request
- brcmf_p2p_set_discover_state
- brcmf_p2p_deinit_discovery
- brcmf_p2p_enable_discovery
- brcmf_p2p_escan
- brcmf_p2p_run_escan
- brcmf_p2p_find_listen_channel
- brcmf_p2p_scan_prep
- brcmf_p2p_discover_listen
- brcmf_p2p_remain_on_channel
- brcmf_p2p_notify_listen_complete
- brcmf_p2p_cancel_remain_on_channel
- brcmf_p2p_act_frm_search
- brcmf_p2p_afx_handler
- brcmf_p2p_af_searching_channel
- brcmf_p2p_scan_finding_common_channel
- brcmf_p2p_stop_wait_next_action_frame
- brcmf_p2p_gon_req_collision
- brcmf_p2p_notify_action_frame_rx
- brcmf_p2p_notify_action_tx_complete
- brcmf_p2p_tx_action_frame
- brcmf_p2p_pub_af_tx
- brcmf_p2p_send_action_frame
- brcmf_p2p_notify_rx_mgmt_p2p_probereq
- brcmf_p2p_get_current_chanspec
- brcmf_p2p_ifchange
- brcmf_p2p_request_p2p_if
- brcmf_p2p_disable_p2p_if
- brcmf_p2p_release_p2p_if
- brcmf_p2p_create_p2pdev
- brcmf_p2p_add_vif
- brcmf_p2p_del_vif
- brcmf_p2p_ifp_removed
- brcmf_p2p_start_device
- brcmf_p2p_stop_device
- brcmf_p2p_attach
- brcmf_p2p_detach
1
2
3
4
5 #include <linux/slab.h>
6 #include <linux/netdevice.h>
7 #include <linux/etherdevice.h>
8 #include <linux/rtnetlink.h>
9 #include <net/cfg80211.h>
10
11 #include <brcmu_wifi.h>
12 #include <brcmu_utils.h>
13 #include <defs.h>
14 #include "core.h"
15 #include "debug.h"
16 #include "fwil.h"
17 #include "fwil_types.h"
18 #include "p2p.h"
19 #include "cfg80211.h"
20
21
22 #define P2PAPI_SCAN_NPROBES 1
23 #define P2PAPI_SCAN_DWELL_TIME_MS 80
24 #define P2PAPI_SCAN_SOCIAL_DWELL_TIME_MS 40
25 #define P2PAPI_SCAN_HOME_TIME_MS 60
26 #define P2PAPI_SCAN_NPROBS_TIME_MS 30
27 #define P2PAPI_SCAN_AF_SEARCH_DWELL_TIME_MS 100
28 #define WL_SCAN_CONNECT_DWELL_TIME_MS 200
29 #define WL_SCAN_JOIN_PROBE_INTERVAL_MS 20
30
31 #define BRCMF_P2P_WILDCARD_SSID "DIRECT-"
32 #define BRCMF_P2P_WILDCARD_SSID_LEN (sizeof(BRCMF_P2P_WILDCARD_SSID) - 1)
33
34 #define SOCIAL_CHAN_1 1
35 #define SOCIAL_CHAN_2 6
36 #define SOCIAL_CHAN_3 11
37 #define IS_P2P_SOCIAL_CHANNEL(channel) ((channel == SOCIAL_CHAN_1) || \
38 (channel == SOCIAL_CHAN_2) || \
39 (channel == SOCIAL_CHAN_3))
40 #define BRCMF_P2P_TEMP_CHAN SOCIAL_CHAN_3
41 #define SOCIAL_CHAN_CNT 3
42 #define AF_PEER_SEARCH_CNT 2
43
44 #define BRCMF_SCB_TIMEOUT_VALUE 20
45
46 #define P2P_VER 9
47 #define P2P_PUB_AF_CATEGORY 0x04
48 #define P2P_PUB_AF_ACTION 0x09
49 #define P2P_AF_CATEGORY 0x7f
50 #define P2P_OUI "\x50\x6F\x9A"
51 #define P2P_OUI_LEN 3
52
53
54 #define DOT11_ACTION_HDR_LEN 2
55 #define DOT11_ACTION_CAT_OFF 0
56 #define DOT11_ACTION_ACT_OFF 1
57
58 #define P2P_AF_DWELL_TIME 200
59 #define P2P_AF_MIN_DWELL_TIME 100
60 #define P2P_AF_MED_DWELL_TIME 400
61 #define P2P_AF_LONG_DWELL_TIME 1000
62 #define P2P_AF_TX_MAX_RETRY 1
63 #define P2P_AF_MAX_WAIT_TIME msecs_to_jiffies(2000)
64 #define P2P_INVALID_CHANNEL -1
65 #define P2P_CHANNEL_SYNC_RETRY 5
66 #define P2P_AF_FRM_SCAN_MAX_WAIT msecs_to_jiffies(450)
67 #define P2P_DEFAULT_SLEEP_TIME_VSDB 200
68
69
70 #define P2P_PAF_GON_REQ 0
71 #define P2P_PAF_GON_RSP 1
72 #define P2P_PAF_GON_CONF 2
73 #define P2P_PAF_INVITE_REQ 3
74 #define P2P_PAF_INVITE_RSP 4
75 #define P2P_PAF_DEVDIS_REQ 5
76 #define P2P_PAF_DEVDIS_RSP 6
77 #define P2P_PAF_PROVDIS_REQ 7
78 #define P2P_PAF_PROVDIS_RSP 8
79 #define P2P_PAF_SUBTYPE_INVALID 255
80
81
82 #define P2P_AF_NOTICE_OF_ABSENCE 0
83 #define P2P_AF_PRESENCE_REQ 1
84 #define P2P_AF_PRESENCE_RSP 2
85 #define P2P_AF_GO_DISC_REQ 3
86
87
88 #define P2PSD_ACTION_CATEGORY 0x04
89 #define P2PSD_ACTION_ID_GAS_IREQ 0x0a
90 #define P2PSD_ACTION_ID_GAS_IRESP 0x0b
91 #define P2PSD_ACTION_ID_GAS_CREQ 0x0c
92 #define P2PSD_ACTION_ID_GAS_CRESP 0x0d
93
94 #define BRCMF_P2P_DISABLE_TIMEOUT msecs_to_jiffies(500)
95
96
97
98
99
100
101
102 struct brcmf_p2p_disc_st_le {
103 u8 state;
104 __le16 chspec;
105 __le16 dwell;
106 };
107
108
109
110
111
112
113
114
115 enum brcmf_p2p_disc_state {
116 WL_P2P_DISC_ST_SCAN,
117 WL_P2P_DISC_ST_LISTEN,
118 WL_P2P_DISC_ST_SEARCH
119 };
120
121
122
123
124
125
126
127
128
129 struct brcmf_p2p_scan_le {
130 u8 type;
131 u8 reserved[3];
132 union {
133 struct brcmf_escan_params_le eparams;
134 struct brcmf_scan_params_le sparams;
135 };
136 };
137
138
139
140
141
142
143
144
145
146
147
148
149 struct brcmf_p2p_pub_act_frame {
150 u8 category;
151 u8 action;
152 u8 oui[3];
153 u8 oui_type;
154 u8 subtype;
155 u8 dialog_token;
156 u8 elts[1];
157 };
158
159
160
161
162
163
164
165
166
167
168
169 struct brcmf_p2p_action_frame {
170 u8 category;
171 u8 oui[3];
172 u8 type;
173 u8 subtype;
174 u8 dialog_token;
175 u8 elts[1];
176 };
177
178
179
180
181
182
183
184
185
186 struct brcmf_p2psd_gas_pub_act_frame {
187 u8 category;
188 u8 action;
189 u8 dialog_token;
190 u8 query_data[1];
191 };
192
193
194
195
196
197
198
199
200
201 struct brcmf_config_af_params {
202 s32 mpc_onoff;
203 bool search_channel;
204 bool extra_listen;
205 };
206
207
208
209
210
211
212
213
214
215 static bool brcmf_p2p_is_pub_action(void *frame, u32 frame_len)
216 {
217 struct brcmf_p2p_pub_act_frame *pact_frm;
218
219 if (frame == NULL)
220 return false;
221
222 pact_frm = (struct brcmf_p2p_pub_act_frame *)frame;
223 if (frame_len < sizeof(struct brcmf_p2p_pub_act_frame) - 1)
224 return false;
225
226 if (pact_frm->category == P2P_PUB_AF_CATEGORY &&
227 pact_frm->action == P2P_PUB_AF_ACTION &&
228 pact_frm->oui_type == P2P_VER &&
229 memcmp(pact_frm->oui, P2P_OUI, P2P_OUI_LEN) == 0)
230 return true;
231
232 return false;
233 }
234
235
236
237
238
239
240
241
242
243 static bool brcmf_p2p_is_p2p_action(void *frame, u32 frame_len)
244 {
245 struct brcmf_p2p_action_frame *act_frm;
246
247 if (frame == NULL)
248 return false;
249
250 act_frm = (struct brcmf_p2p_action_frame *)frame;
251 if (frame_len < sizeof(struct brcmf_p2p_action_frame) - 1)
252 return false;
253
254 if (act_frm->category == P2P_AF_CATEGORY &&
255 act_frm->type == P2P_VER &&
256 memcmp(act_frm->oui, P2P_OUI, P2P_OUI_LEN) == 0)
257 return true;
258
259 return false;
260 }
261
262
263
264
265
266
267
268
269
270 static bool brcmf_p2p_is_gas_action(void *frame, u32 frame_len)
271 {
272 struct brcmf_p2psd_gas_pub_act_frame *sd_act_frm;
273
274 if (frame == NULL)
275 return false;
276
277 sd_act_frm = (struct brcmf_p2psd_gas_pub_act_frame *)frame;
278 if (frame_len < sizeof(struct brcmf_p2psd_gas_pub_act_frame) - 1)
279 return false;
280
281 if (sd_act_frm->category != P2PSD_ACTION_CATEGORY)
282 return false;
283
284 if (sd_act_frm->action == P2PSD_ACTION_ID_GAS_IREQ ||
285 sd_act_frm->action == P2PSD_ACTION_ID_GAS_IRESP ||
286 sd_act_frm->action == P2PSD_ACTION_ID_GAS_CREQ ||
287 sd_act_frm->action == P2PSD_ACTION_ID_GAS_CRESP)
288 return true;
289
290 return false;
291 }
292
293
294
295
296
297
298
299
300
301
302
303 #ifdef DEBUG
304
305 static void brcmf_p2p_print_actframe(bool tx, void *frame, u32 frame_len)
306 {
307 struct brcmf_p2p_pub_act_frame *pact_frm;
308 struct brcmf_p2p_action_frame *act_frm;
309 struct brcmf_p2psd_gas_pub_act_frame *sd_act_frm;
310
311 if (!frame || frame_len <= 2)
312 return;
313
314 if (brcmf_p2p_is_pub_action(frame, frame_len)) {
315 pact_frm = (struct brcmf_p2p_pub_act_frame *)frame;
316 switch (pact_frm->subtype) {
317 case P2P_PAF_GON_REQ:
318 brcmf_dbg(TRACE, "%s P2P Group Owner Negotiation Req Frame\n",
319 (tx) ? "TX" : "RX");
320 break;
321 case P2P_PAF_GON_RSP:
322 brcmf_dbg(TRACE, "%s P2P Group Owner Negotiation Rsp Frame\n",
323 (tx) ? "TX" : "RX");
324 break;
325 case P2P_PAF_GON_CONF:
326 brcmf_dbg(TRACE, "%s P2P Group Owner Negotiation Confirm Frame\n",
327 (tx) ? "TX" : "RX");
328 break;
329 case P2P_PAF_INVITE_REQ:
330 brcmf_dbg(TRACE, "%s P2P Invitation Request Frame\n",
331 (tx) ? "TX" : "RX");
332 break;
333 case P2P_PAF_INVITE_RSP:
334 brcmf_dbg(TRACE, "%s P2P Invitation Response Frame\n",
335 (tx) ? "TX" : "RX");
336 break;
337 case P2P_PAF_DEVDIS_REQ:
338 brcmf_dbg(TRACE, "%s P2P Device Discoverability Request Frame\n",
339 (tx) ? "TX" : "RX");
340 break;
341 case P2P_PAF_DEVDIS_RSP:
342 brcmf_dbg(TRACE, "%s P2P Device Discoverability Response Frame\n",
343 (tx) ? "TX" : "RX");
344 break;
345 case P2P_PAF_PROVDIS_REQ:
346 brcmf_dbg(TRACE, "%s P2P Provision Discovery Request Frame\n",
347 (tx) ? "TX" : "RX");
348 break;
349 case P2P_PAF_PROVDIS_RSP:
350 brcmf_dbg(TRACE, "%s P2P Provision Discovery Response Frame\n",
351 (tx) ? "TX" : "RX");
352 break;
353 default:
354 brcmf_dbg(TRACE, "%s Unknown P2P Public Action Frame\n",
355 (tx) ? "TX" : "RX");
356 break;
357 }
358 } else if (brcmf_p2p_is_p2p_action(frame, frame_len)) {
359 act_frm = (struct brcmf_p2p_action_frame *)frame;
360 switch (act_frm->subtype) {
361 case P2P_AF_NOTICE_OF_ABSENCE:
362 brcmf_dbg(TRACE, "%s P2P Notice of Absence Frame\n",
363 (tx) ? "TX" : "RX");
364 break;
365 case P2P_AF_PRESENCE_REQ:
366 brcmf_dbg(TRACE, "%s P2P Presence Request Frame\n",
367 (tx) ? "TX" : "RX");
368 break;
369 case P2P_AF_PRESENCE_RSP:
370 brcmf_dbg(TRACE, "%s P2P Presence Response Frame\n",
371 (tx) ? "TX" : "RX");
372 break;
373 case P2P_AF_GO_DISC_REQ:
374 brcmf_dbg(TRACE, "%s P2P Discoverability Request Frame\n",
375 (tx) ? "TX" : "RX");
376 break;
377 default:
378 brcmf_dbg(TRACE, "%s Unknown P2P Action Frame\n",
379 (tx) ? "TX" : "RX");
380 }
381
382 } else if (brcmf_p2p_is_gas_action(frame, frame_len)) {
383 sd_act_frm = (struct brcmf_p2psd_gas_pub_act_frame *)frame;
384 switch (sd_act_frm->action) {
385 case P2PSD_ACTION_ID_GAS_IREQ:
386 brcmf_dbg(TRACE, "%s P2P GAS Initial Request\n",
387 (tx) ? "TX" : "RX");
388 break;
389 case P2PSD_ACTION_ID_GAS_IRESP:
390 brcmf_dbg(TRACE, "%s P2P GAS Initial Response\n",
391 (tx) ? "TX" : "RX");
392 break;
393 case P2PSD_ACTION_ID_GAS_CREQ:
394 brcmf_dbg(TRACE, "%s P2P GAS Comback Request\n",
395 (tx) ? "TX" : "RX");
396 break;
397 case P2PSD_ACTION_ID_GAS_CRESP:
398 brcmf_dbg(TRACE, "%s P2P GAS Comback Response\n",
399 (tx) ? "TX" : "RX");
400 break;
401 default:
402 brcmf_dbg(TRACE, "%s Unknown P2P GAS Frame\n",
403 (tx) ? "TX" : "RX");
404 break;
405 }
406 }
407 }
408
409 #else
410
411 static void brcmf_p2p_print_actframe(bool tx, void *frame, u32 frame_len)
412 {
413 }
414
415 #endif
416
417
418
419
420
421
422
423
424 static int brcmf_p2p_set_firmware(struct brcmf_if *ifp, u8 *p2p_mac)
425 {
426 struct brcmf_pub *drvr = ifp->drvr;
427 s32 ret = 0;
428
429 brcmf_fil_cmd_int_set(ifp, BRCMF_C_DOWN, 1);
430 brcmf_fil_iovar_int_set(ifp, "apsta", 1);
431 brcmf_fil_cmd_int_set(ifp, BRCMF_C_UP, 1);
432
433
434
435
436
437
438 brcmf_fil_iovar_int_set(ifp, "p2p_disc", 0);
439
440 ret = brcmf_fil_iovar_data_set(ifp, "p2p_da_override", p2p_mac,
441 ETH_ALEN);
442 if (ret)
443 bphy_err(drvr, "failed to update device address ret %d\n", ret);
444
445 return ret;
446 }
447
448
449
450
451
452
453
454
455
456
457
458 static void brcmf_p2p_generate_bss_mac(struct brcmf_p2p_info *p2p, u8 *dev_addr)
459 {
460 bool random_addr = false;
461
462 if (!dev_addr || is_zero_ether_addr(dev_addr))
463 random_addr = true;
464
465
466
467
468 if (random_addr)
469 eth_random_addr(p2p->dev_addr);
470 else
471 memcpy(p2p->dev_addr, dev_addr, ETH_ALEN);
472
473
474
475
476
477 memcpy(p2p->int_addr, p2p->dev_addr, ETH_ALEN);
478 p2p->int_addr[0] |= 0x02;
479 p2p->int_addr[4] ^= 0x80;
480 }
481
482
483
484
485
486
487
488
489
490 static bool brcmf_p2p_scan_is_p2p_request(struct cfg80211_scan_request *request)
491 {
492 struct cfg80211_ssid *ssids = request->ssids;
493 int i;
494
495 for (i = 0; i < request->n_ssids; i++) {
496 if (ssids[i].ssid_len != BRCMF_P2P_WILDCARD_SSID_LEN)
497 continue;
498
499 brcmf_dbg(INFO, "comparing ssid \"%s\"", ssids[i].ssid);
500 if (!memcmp(BRCMF_P2P_WILDCARD_SSID, ssids[i].ssid,
501 BRCMF_P2P_WILDCARD_SSID_LEN))
502 return true;
503 }
504 return false;
505 }
506
507
508
509
510
511
512
513
514
515 static s32 brcmf_p2p_set_discover_state(struct brcmf_if *ifp, u8 state,
516 u16 chanspec, u16 listen_ms)
517 {
518 struct brcmf_p2p_disc_st_le discover_state;
519 s32 ret = 0;
520 brcmf_dbg(TRACE, "enter\n");
521
522 discover_state.state = state;
523 discover_state.chspec = cpu_to_le16(chanspec);
524 discover_state.dwell = cpu_to_le16(listen_ms);
525 ret = brcmf_fil_bsscfg_data_set(ifp, "p2p_state", &discover_state,
526 sizeof(discover_state));
527 return ret;
528 }
529
530
531
532
533
534
535
536
537 static s32 brcmf_p2p_deinit_discovery(struct brcmf_p2p_info *p2p)
538 {
539 struct brcmf_cfg80211_vif *vif;
540
541 brcmf_dbg(TRACE, "enter\n");
542
543
544 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
545 (void)brcmf_p2p_set_discover_state(vif->ifp, WL_P2P_DISC_ST_SCAN, 0, 0);
546
547
548 vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif;
549 (void)brcmf_fil_iovar_int_set(vif->ifp, "p2p_disc", 0);
550
551 return 0;
552 }
553
554
555
556
557
558
559
560
561 static int brcmf_p2p_enable_discovery(struct brcmf_p2p_info *p2p)
562 {
563 struct brcmf_pub *drvr = p2p->cfg->pub;
564 struct brcmf_cfg80211_vif *vif;
565 s32 ret = 0;
566
567 brcmf_dbg(TRACE, "enter\n");
568 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
569 if (!vif) {
570 bphy_err(drvr, "P2P config device not available\n");
571 ret = -EPERM;
572 goto exit;
573 }
574
575 if (test_bit(BRCMF_P2P_STATUS_ENABLED, &p2p->status)) {
576 brcmf_dbg(INFO, "P2P config device already configured\n");
577 goto exit;
578 }
579
580
581 vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif;
582 ret = brcmf_fil_iovar_int_set(vif->ifp, "p2p_disc", 1);
583 if (ret < 0) {
584 bphy_err(drvr, "set p2p_disc error\n");
585 goto exit;
586 }
587 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
588 ret = brcmf_p2p_set_discover_state(vif->ifp, WL_P2P_DISC_ST_SCAN, 0, 0);
589 if (ret < 0) {
590 bphy_err(drvr, "unable to set WL_P2P_DISC_ST_SCAN\n");
591 goto exit;
592 }
593
594
595
596
597
598
599
600 ret = brcmf_fil_bsscfg_int_set(vif->ifp, "wsec", AES_ENABLED);
601 if (ret < 0) {
602 bphy_err(drvr, "wsec error %d\n", ret);
603 goto exit;
604 }
605
606 set_bit(BRCMF_P2P_STATUS_ENABLED, &p2p->status);
607 exit:
608 return ret;
609 }
610
611
612
613
614
615
616
617
618
619
620 static s32 brcmf_p2p_escan(struct brcmf_p2p_info *p2p, u32 num_chans,
621 u16 chanspecs[], s32 search_state,
622 enum p2p_bss_type bss_type)
623 {
624 struct brcmf_pub *drvr = p2p->cfg->pub;
625 s32 ret = 0;
626 s32 memsize = offsetof(struct brcmf_p2p_scan_le,
627 eparams.params_le.channel_list);
628 s32 nprobes;
629 s32 active;
630 u32 i;
631 u8 *memblk;
632 struct brcmf_cfg80211_vif *vif;
633 struct brcmf_p2p_scan_le *p2p_params;
634 struct brcmf_scan_params_le *sparams;
635
636 memsize += num_chans * sizeof(__le16);
637 memblk = kzalloc(memsize, GFP_KERNEL);
638 if (!memblk)
639 return -ENOMEM;
640
641 vif = p2p->bss_idx[bss_type].vif;
642 if (vif == NULL) {
643 bphy_err(drvr, "no vif for bss type %d\n", bss_type);
644 ret = -EINVAL;
645 goto exit;
646 }
647 p2p_params = (struct brcmf_p2p_scan_le *)memblk;
648 sparams = &p2p_params->eparams.params_le;
649
650 switch (search_state) {
651 case WL_P2P_DISC_ST_SEARCH:
652
653
654
655
656
657 break;
658 case WL_P2P_DISC_ST_SCAN:
659
660
661
662
663
664
665 sparams->ssid_le.SSID_len =
666 cpu_to_le32(BRCMF_P2P_WILDCARD_SSID_LEN);
667 memcpy(sparams->ssid_le.SSID, BRCMF_P2P_WILDCARD_SSID,
668 BRCMF_P2P_WILDCARD_SSID_LEN);
669 break;
670 default:
671 bphy_err(drvr, " invalid search state %d\n", search_state);
672 ret = -EINVAL;
673 goto exit;
674 }
675
676 brcmf_p2p_set_discover_state(vif->ifp, search_state, 0, 0);
677
678
679
680
681 p2p_params->type = 'E';
682
683
684 sparams->bss_type = DOT11_BSSTYPE_ANY;
685 sparams->scan_type = BRCMF_SCANTYPE_ACTIVE;
686
687 eth_broadcast_addr(sparams->bssid);
688 sparams->home_time = cpu_to_le32(P2PAPI_SCAN_HOME_TIME_MS);
689
690
691
692
693
694 if (num_chans == SOCIAL_CHAN_CNT || num_chans == (SOCIAL_CHAN_CNT + 1))
695 active = P2PAPI_SCAN_SOCIAL_DWELL_TIME_MS;
696 else if (num_chans == AF_PEER_SEARCH_CNT)
697 active = P2PAPI_SCAN_AF_SEARCH_DWELL_TIME_MS;
698 else if (brcmf_get_vif_state_any(p2p->cfg, BRCMF_VIF_STATUS_CONNECTED))
699 active = -1;
700 else
701 active = P2PAPI_SCAN_DWELL_TIME_MS;
702
703
704 if (num_chans == 1) {
705 active = WL_SCAN_CONNECT_DWELL_TIME_MS;
706
707
708
709 nprobes = active / WL_SCAN_JOIN_PROBE_INTERVAL_MS;
710 } else {
711 nprobes = active / P2PAPI_SCAN_NPROBS_TIME_MS;
712 }
713
714 if (nprobes <= 0)
715 nprobes = 1;
716
717 brcmf_dbg(INFO, "nprobes # %d, active_time %d\n", nprobes, active);
718 sparams->active_time = cpu_to_le32(active);
719 sparams->nprobes = cpu_to_le32(nprobes);
720 sparams->passive_time = cpu_to_le32(-1);
721 sparams->channel_num = cpu_to_le32(num_chans &
722 BRCMF_SCAN_PARAMS_COUNT_MASK);
723 for (i = 0; i < num_chans; i++)
724 sparams->channel_list[i] = cpu_to_le16(chanspecs[i]);
725
726
727 p2p_params->eparams.version = cpu_to_le32(BRCMF_ESCAN_REQ_VERSION);
728 p2p_params->eparams.action = cpu_to_le16(WL_ESCAN_ACTION_START);
729 p2p_params->eparams.sync_id = cpu_to_le16(0x1234);
730
731 ret = brcmf_fil_bsscfg_data_set(vif->ifp, "p2p_scan", memblk, memsize);
732 if (!ret)
733 set_bit(BRCMF_SCAN_STATUS_BUSY, &p2p->cfg->scan_status);
734 exit:
735 kfree(memblk);
736 return ret;
737 }
738
739
740
741
742
743
744
745
746
747
748
749
750 static s32 brcmf_p2p_run_escan(struct brcmf_cfg80211_info *cfg,
751 struct brcmf_if *ifp,
752 struct cfg80211_scan_request *request)
753 {
754 struct brcmf_p2p_info *p2p = &cfg->p2p;
755 struct brcmf_pub *drvr = cfg->pub;
756 s32 err = 0;
757 s32 search_state = WL_P2P_DISC_ST_SCAN;
758 struct brcmf_cfg80211_vif *vif;
759 struct net_device *dev = NULL;
760 int i, num_nodfs = 0;
761 u16 *chanspecs;
762
763 brcmf_dbg(TRACE, "enter\n");
764
765 if (!request) {
766 err = -EINVAL;
767 goto exit;
768 }
769
770 if (request->n_channels) {
771 chanspecs = kcalloc(request->n_channels, sizeof(*chanspecs),
772 GFP_KERNEL);
773 if (!chanspecs) {
774 err = -ENOMEM;
775 goto exit;
776 }
777 vif = p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif;
778 if (vif)
779 dev = vif->wdev.netdev;
780 if (request->n_channels == 3 &&
781 request->channels[0]->hw_value == SOCIAL_CHAN_1 &&
782 request->channels[1]->hw_value == SOCIAL_CHAN_2 &&
783 request->channels[2]->hw_value == SOCIAL_CHAN_3) {
784
785 search_state = WL_P2P_DISC_ST_SEARCH;
786 brcmf_dbg(INFO, "P2P SEARCH PHASE START\n");
787 } else if (dev != NULL &&
788 vif->wdev.iftype == NL80211_IFTYPE_P2P_GO) {
789
790 brcmf_dbg(INFO, "Already a GO. Do SEARCH Only\n");
791 search_state = WL_P2P_DISC_ST_SEARCH;
792 } else {
793 brcmf_dbg(INFO, "P2P SCAN STATE START\n");
794 }
795
796
797
798
799 for (i = 0; i < request->n_channels; i++) {
800 struct ieee80211_channel *chan = request->channels[i];
801
802 if (chan->flags & (IEEE80211_CHAN_RADAR |
803 IEEE80211_CHAN_NO_IR))
804 continue;
805
806 chanspecs[i] = channel_to_chanspec(&p2p->cfg->d11inf,
807 chan);
808 brcmf_dbg(INFO, "%d: chan=%d, channel spec=%x\n",
809 num_nodfs, chan->hw_value, chanspecs[i]);
810 num_nodfs++;
811 }
812 err = brcmf_p2p_escan(p2p, num_nodfs, chanspecs, search_state,
813 P2PAPI_BSSCFG_DEVICE);
814 kfree(chanspecs);
815 }
816 exit:
817 if (err)
818 bphy_err(drvr, "error (%d)\n", err);
819 return err;
820 }
821
822
823
824
825
826
827
828
829
830
831
832 static s32 brcmf_p2p_find_listen_channel(const u8 *ie, u32 ie_len)
833 {
834 u8 channel_ie[5];
835 s32 listen_channel;
836 s32 err;
837
838 err = cfg80211_get_p2p_attr(ie, ie_len,
839 IEEE80211_P2P_ATTR_LISTEN_CHANNEL,
840 channel_ie, sizeof(channel_ie));
841 if (err < 0)
842 return err;
843
844
845
846 listen_channel = (s32)channel_ie[3 + 1];
847
848 if (listen_channel == SOCIAL_CHAN_1 ||
849 listen_channel == SOCIAL_CHAN_2 ||
850 listen_channel == SOCIAL_CHAN_3) {
851 brcmf_dbg(INFO, "Found my Listen Channel %d\n", listen_channel);
852 return listen_channel;
853 }
854
855 return -EPERM;
856 }
857
858
859
860
861
862
863
864
865
866
867
868
869 int brcmf_p2p_scan_prep(struct wiphy *wiphy,
870 struct cfg80211_scan_request *request,
871 struct brcmf_cfg80211_vif *vif)
872 {
873 struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
874 struct brcmf_p2p_info *p2p = &cfg->p2p;
875 int err;
876
877 if (brcmf_p2p_scan_is_p2p_request(request)) {
878
879 err = brcmf_p2p_find_listen_channel(request->ie,
880 request->ie_len);
881 if (err < 0)
882 return err;
883
884 p2p->afx_hdl.my_listen_chan = err;
885
886 clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);
887 brcmf_dbg(INFO, "P2P: GO_NEG_PHASE status cleared\n");
888
889 err = brcmf_p2p_enable_discovery(p2p);
890 if (err)
891 return err;
892
893 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
894
895
896 cfg->escan_info.run = brcmf_p2p_run_escan;
897 }
898 return 0;
899 }
900
901
902
903
904
905
906
907
908
909
910 static s32
911 brcmf_p2p_discover_listen(struct brcmf_p2p_info *p2p, u16 channel, u32 duration)
912 {
913 struct brcmf_pub *drvr = p2p->cfg->pub;
914 struct brcmf_cfg80211_vif *vif;
915 struct brcmu_chan ch;
916 s32 err = 0;
917
918 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
919 if (!vif) {
920 bphy_err(drvr, "Discovery is not set, so we have nothing to do\n");
921 err = -EPERM;
922 goto exit;
923 }
924
925 if (test_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN, &p2p->status)) {
926 bphy_err(drvr, "Previous LISTEN is not completed yet\n");
927
928 goto exit;
929 }
930
931 ch.chnum = channel;
932 ch.bw = BRCMU_CHAN_BW_20;
933 p2p->cfg->d11inf.encchspec(&ch);
934 err = brcmf_p2p_set_discover_state(vif->ifp, WL_P2P_DISC_ST_LISTEN,
935 ch.chspec, (u16)duration);
936 if (!err) {
937 set_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN, &p2p->status);
938 p2p->remain_on_channel_cookie++;
939 }
940 exit:
941 return err;
942 }
943
944
945
946
947
948
949
950
951
952
953 int brcmf_p2p_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
954 struct ieee80211_channel *channel,
955 unsigned int duration, u64 *cookie)
956 {
957 struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
958 struct brcmf_p2p_info *p2p = &cfg->p2p;
959 s32 err;
960 u16 channel_nr;
961
962 channel_nr = ieee80211_frequency_to_channel(channel->center_freq);
963 brcmf_dbg(TRACE, "Enter, channel: %d, duration ms (%d)\n", channel_nr,
964 duration);
965
966 err = brcmf_p2p_enable_discovery(p2p);
967 if (err)
968 goto exit;
969 err = brcmf_p2p_discover_listen(p2p, channel_nr, duration);
970 if (err)
971 goto exit;
972
973 memcpy(&p2p->remain_on_channel, channel, sizeof(*channel));
974 *cookie = p2p->remain_on_channel_cookie;
975 cfg80211_ready_on_channel(wdev, *cookie, channel, duration, GFP_KERNEL);
976
977 exit:
978 return err;
979 }
980
981
982
983
984
985
986
987
988
989
990 int brcmf_p2p_notify_listen_complete(struct brcmf_if *ifp,
991 const struct brcmf_event_msg *e,
992 void *data)
993 {
994 struct brcmf_cfg80211_info *cfg = ifp->drvr->config;
995 struct brcmf_p2p_info *p2p = &cfg->p2p;
996
997 brcmf_dbg(TRACE, "Enter\n");
998 if (test_and_clear_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN,
999 &p2p->status)) {
1000 if (test_and_clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN,
1001 &p2p->status)) {
1002 clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME,
1003 &p2p->status);
1004 brcmf_dbg(INFO, "Listen DONE, wake up wait_next_af\n");
1005 complete(&p2p->wait_next_af);
1006 }
1007
1008 cfg80211_remain_on_channel_expired(&ifp->vif->wdev,
1009 p2p->remain_on_channel_cookie,
1010 &p2p->remain_on_channel,
1011 GFP_KERNEL);
1012 }
1013 return 0;
1014 }
1015
1016
1017
1018
1019
1020
1021
1022
1023 void brcmf_p2p_cancel_remain_on_channel(struct brcmf_if *ifp)
1024 {
1025 if (!ifp)
1026 return;
1027 brcmf_p2p_set_discover_state(ifp, WL_P2P_DISC_ST_SCAN, 0, 0);
1028 brcmf_p2p_notify_listen_complete(ifp, NULL, NULL);
1029 }
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041 static s32 brcmf_p2p_act_frm_search(struct brcmf_p2p_info *p2p, u16 channel)
1042 {
1043 struct brcmf_pub *drvr = p2p->cfg->pub;
1044 s32 err;
1045 u32 channel_cnt;
1046 u16 *default_chan_list;
1047 u32 i;
1048 struct brcmu_chan ch;
1049
1050 brcmf_dbg(TRACE, "Enter\n");
1051
1052 if (channel)
1053 channel_cnt = AF_PEER_SEARCH_CNT;
1054 else
1055 channel_cnt = SOCIAL_CHAN_CNT;
1056 default_chan_list = kcalloc(channel_cnt, sizeof(*default_chan_list),
1057 GFP_KERNEL);
1058 if (default_chan_list == NULL) {
1059 bphy_err(drvr, "channel list allocation failed\n");
1060 err = -ENOMEM;
1061 goto exit;
1062 }
1063 ch.bw = BRCMU_CHAN_BW_20;
1064 if (channel) {
1065 ch.chnum = channel;
1066 p2p->cfg->d11inf.encchspec(&ch);
1067
1068 for (i = 0; i < channel_cnt; i++)
1069 default_chan_list[i] = ch.chspec;
1070 } else {
1071 ch.chnum = SOCIAL_CHAN_1;
1072 p2p->cfg->d11inf.encchspec(&ch);
1073 default_chan_list[0] = ch.chspec;
1074 ch.chnum = SOCIAL_CHAN_2;
1075 p2p->cfg->d11inf.encchspec(&ch);
1076 default_chan_list[1] = ch.chspec;
1077 ch.chnum = SOCIAL_CHAN_3;
1078 p2p->cfg->d11inf.encchspec(&ch);
1079 default_chan_list[2] = ch.chspec;
1080 }
1081 err = brcmf_p2p_escan(p2p, channel_cnt, default_chan_list,
1082 WL_P2P_DISC_ST_SEARCH, P2PAPI_BSSCFG_DEVICE);
1083 kfree(default_chan_list);
1084 exit:
1085 return err;
1086 }
1087
1088
1089
1090
1091
1092
1093
1094
1095 static void brcmf_p2p_afx_handler(struct work_struct *work)
1096 {
1097 struct afx_hdl *afx_hdl = container_of(work, struct afx_hdl, afx_work);
1098 struct brcmf_p2p_info *p2p = container_of(afx_hdl,
1099 struct brcmf_p2p_info,
1100 afx_hdl);
1101 struct brcmf_pub *drvr = p2p->cfg->pub;
1102 s32 err;
1103
1104 if (!afx_hdl->is_active)
1105 return;
1106
1107 if (afx_hdl->is_listen && afx_hdl->my_listen_chan)
1108
1109 err = brcmf_p2p_discover_listen(p2p, afx_hdl->my_listen_chan,
1110 100 * (1 + prandom_u32() % 3));
1111 else
1112 err = brcmf_p2p_act_frm_search(p2p, afx_hdl->peer_listen_chan);
1113
1114 if (err) {
1115 bphy_err(drvr, "ERROR occurred! value is (%d)\n", err);
1116 if (test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL,
1117 &p2p->status))
1118 complete(&afx_hdl->act_frm_scan);
1119 }
1120 }
1121
1122
1123
1124
1125
1126
1127
1128
1129 static s32 brcmf_p2p_af_searching_channel(struct brcmf_p2p_info *p2p)
1130 {
1131 struct afx_hdl *afx_hdl = &p2p->afx_hdl;
1132 struct brcmf_cfg80211_vif *pri_vif;
1133 s32 retry;
1134
1135 brcmf_dbg(TRACE, "Enter\n");
1136
1137 pri_vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif;
1138
1139 reinit_completion(&afx_hdl->act_frm_scan);
1140 set_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status);
1141 afx_hdl->is_active = true;
1142 afx_hdl->peer_chan = P2P_INVALID_CHANNEL;
1143
1144
1145
1146
1147 retry = 0;
1148 while ((retry < P2P_CHANNEL_SYNC_RETRY) &&
1149 (afx_hdl->peer_chan == P2P_INVALID_CHANNEL)) {
1150 afx_hdl->is_listen = false;
1151 brcmf_dbg(TRACE, "Scheduling action frame for sending.. (%d)\n",
1152 retry);
1153
1154 schedule_work(&afx_hdl->afx_work);
1155 wait_for_completion_timeout(&afx_hdl->act_frm_scan,
1156 P2P_AF_FRM_SCAN_MAX_WAIT);
1157 if ((afx_hdl->peer_chan != P2P_INVALID_CHANNEL) ||
1158 (!test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL,
1159 &p2p->status)))
1160 break;
1161
1162 if (afx_hdl->my_listen_chan) {
1163 brcmf_dbg(TRACE, "Scheduling listen peer, channel=%d\n",
1164 afx_hdl->my_listen_chan);
1165
1166 afx_hdl->is_listen = true;
1167 schedule_work(&afx_hdl->afx_work);
1168 wait_for_completion_timeout(&afx_hdl->act_frm_scan,
1169 P2P_AF_FRM_SCAN_MAX_WAIT);
1170 }
1171 if ((afx_hdl->peer_chan != P2P_INVALID_CHANNEL) ||
1172 (!test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL,
1173 &p2p->status)))
1174 break;
1175 retry++;
1176
1177
1178
1179
1180 if (test_bit(BRCMF_VIF_STATUS_CONNECTED, &pri_vif->sme_state) ||
1181 test_bit(BRCMF_VIF_STATUS_CONNECTING, &pri_vif->sme_state))
1182 msleep(P2P_DEFAULT_SLEEP_TIME_VSDB);
1183 }
1184
1185 brcmf_dbg(TRACE, "Completed search/listen peer_chan=%d\n",
1186 afx_hdl->peer_chan);
1187 afx_hdl->is_active = false;
1188
1189 clear_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status);
1190
1191 return afx_hdl->peer_chan;
1192 }
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202 bool brcmf_p2p_scan_finding_common_channel(struct brcmf_cfg80211_info *cfg,
1203 struct brcmf_bss_info_le *bi)
1204
1205 {
1206 struct brcmf_p2p_info *p2p = &cfg->p2p;
1207 struct afx_hdl *afx_hdl = &p2p->afx_hdl;
1208 struct brcmu_chan ch;
1209 u8 *ie;
1210 s32 err;
1211 u8 p2p_dev_addr[ETH_ALEN];
1212
1213 if (!test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status))
1214 return false;
1215
1216 if (bi == NULL) {
1217 brcmf_dbg(TRACE, "ACTION FRAME SCAN Done\n");
1218 if (afx_hdl->peer_chan == P2P_INVALID_CHANNEL)
1219 complete(&afx_hdl->act_frm_scan);
1220 return true;
1221 }
1222
1223 ie = ((u8 *)bi) + le16_to_cpu(bi->ie_offset);
1224 memset(p2p_dev_addr, 0, sizeof(p2p_dev_addr));
1225 err = cfg80211_get_p2p_attr(ie, le32_to_cpu(bi->ie_length),
1226 IEEE80211_P2P_ATTR_DEVICE_INFO,
1227 p2p_dev_addr, sizeof(p2p_dev_addr));
1228 if (err < 0)
1229 err = cfg80211_get_p2p_attr(ie, le32_to_cpu(bi->ie_length),
1230 IEEE80211_P2P_ATTR_DEVICE_ID,
1231 p2p_dev_addr, sizeof(p2p_dev_addr));
1232 if ((err >= 0) &&
1233 (ether_addr_equal(p2p_dev_addr, afx_hdl->tx_dst_addr))) {
1234 if (!bi->ctl_ch) {
1235 ch.chspec = le16_to_cpu(bi->chanspec);
1236 cfg->d11inf.decchspec(&ch);
1237 bi->ctl_ch = ch.control_ch_num;
1238 }
1239 afx_hdl->peer_chan = bi->ctl_ch;
1240 brcmf_dbg(TRACE, "ACTION FRAME SCAN : Peer %pM found, channel : %d\n",
1241 afx_hdl->tx_dst_addr, afx_hdl->peer_chan);
1242 complete(&afx_hdl->act_frm_scan);
1243 }
1244 return true;
1245 }
1246
1247
1248
1249
1250
1251
1252
1253 static void
1254 brcmf_p2p_stop_wait_next_action_frame(struct brcmf_cfg80211_info *cfg)
1255 {
1256 struct brcmf_p2p_info *p2p = &cfg->p2p;
1257 struct brcmf_if *ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp;
1258
1259 if (test_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status) &&
1260 (test_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status) ||
1261 test_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status))) {
1262 brcmf_dbg(TRACE, "*** Wake UP ** abort actframe iovar\n");
1263
1264
1265
1266 if (p2p->af_sent_channel)
1267 brcmf_notify_escan_complete(cfg, ifp, true, true);
1268 } else if (test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN,
1269 &p2p->status)) {
1270 brcmf_dbg(TRACE, "*** Wake UP ** abort listen for next af frame\n");
1271
1272 brcmf_notify_escan_complete(cfg, ifp, true, true);
1273 }
1274 }
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284 static bool
1285 brcmf_p2p_gon_req_collision(struct brcmf_p2p_info *p2p, u8 *mac)
1286 {
1287 struct brcmf_cfg80211_info *cfg = p2p->cfg;
1288 struct brcmf_if *ifp;
1289
1290 brcmf_dbg(TRACE, "Enter\n");
1291
1292 if (!test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status) ||
1293 !p2p->gon_req_action)
1294 return false;
1295
1296 brcmf_dbg(TRACE, "GO Negotiation Request COLLISION !!!\n");
1297
1298
1299
1300
1301
1302 ifp = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif->ifp;
1303 if (memcmp(mac, ifp->mac_addr, ETH_ALEN) < 0) {
1304 brcmf_dbg(INFO, "Block transmit gon req !!!\n");
1305 p2p->block_gon_req_tx = true;
1306
1307
1308
1309 if (test_and_clear_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL,
1310 &p2p->status))
1311 complete(&p2p->afx_hdl.act_frm_scan);
1312 if (test_and_clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME,
1313 &p2p->status))
1314 brcmf_p2p_stop_wait_next_action_frame(cfg);
1315 return false;
1316 }
1317
1318
1319 brcmf_dbg(INFO, "Drop received gon req !!!\n");
1320
1321 return true;
1322 }
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333 int brcmf_p2p_notify_action_frame_rx(struct brcmf_if *ifp,
1334 const struct brcmf_event_msg *e,
1335 void *data)
1336 {
1337 struct brcmf_pub *drvr = ifp->drvr;
1338 struct brcmf_cfg80211_info *cfg = drvr->config;
1339 struct brcmf_p2p_info *p2p = &cfg->p2p;
1340 struct afx_hdl *afx_hdl = &p2p->afx_hdl;
1341 struct wireless_dev *wdev;
1342 u32 mgmt_frame_len = e->datalen - sizeof(struct brcmf_rx_mgmt_data);
1343 struct brcmf_rx_mgmt_data *rxframe = (struct brcmf_rx_mgmt_data *)data;
1344 u8 *frame = (u8 *)(rxframe + 1);
1345 struct brcmf_p2p_pub_act_frame *act_frm;
1346 struct brcmf_p2psd_gas_pub_act_frame *sd_act_frm;
1347 struct brcmu_chan ch;
1348 struct ieee80211_mgmt *mgmt_frame;
1349 s32 freq;
1350 u16 mgmt_type;
1351 u8 action;
1352
1353 if (e->datalen < sizeof(*rxframe)) {
1354 brcmf_dbg(SCAN, "Event data to small. Ignore\n");
1355 return 0;
1356 }
1357
1358 ch.chspec = be16_to_cpu(rxframe->chanspec);
1359 cfg->d11inf.decchspec(&ch);
1360
1361 brcmf_dbg(INFO, "ifp->vif->mgmt_rx_reg %04x\n", ifp->vif->mgmt_rx_reg);
1362 mgmt_type = (IEEE80211_STYPE_ACTION & IEEE80211_FCTL_STYPE) >> 4;
1363 if ((ifp->vif->mgmt_rx_reg & BIT(mgmt_type)) == 0)
1364 return 0;
1365
1366 brcmf_p2p_print_actframe(false, frame, mgmt_frame_len);
1367
1368 action = P2P_PAF_SUBTYPE_INVALID;
1369 if (brcmf_p2p_is_pub_action(frame, mgmt_frame_len)) {
1370 act_frm = (struct brcmf_p2p_pub_act_frame *)frame;
1371 action = act_frm->subtype;
1372 if ((action == P2P_PAF_GON_REQ) &&
1373 (brcmf_p2p_gon_req_collision(p2p, (u8 *)e->addr))) {
1374 if (test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL,
1375 &p2p->status) &&
1376 (ether_addr_equal(afx_hdl->tx_dst_addr, e->addr))) {
1377 afx_hdl->peer_chan = ch.control_ch_num;
1378 brcmf_dbg(INFO, "GON request: Peer found, channel=%d\n",
1379 afx_hdl->peer_chan);
1380 complete(&afx_hdl->act_frm_scan);
1381 }
1382 return 0;
1383 }
1384
1385 if ((action == P2P_PAF_GON_CONF) ||
1386 (action == P2P_PAF_PROVDIS_RSP))
1387 brcmf_set_mpc(ifp, 1);
1388 if (action == P2P_PAF_GON_CONF) {
1389 brcmf_dbg(TRACE, "P2P: GO_NEG_PHASE status cleared\n");
1390 clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);
1391 }
1392 } else if (brcmf_p2p_is_gas_action(frame, mgmt_frame_len)) {
1393 sd_act_frm = (struct brcmf_p2psd_gas_pub_act_frame *)frame;
1394 action = sd_act_frm->action;
1395 }
1396
1397 if (test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status) &&
1398 (p2p->next_af_subtype == action)) {
1399 brcmf_dbg(TRACE, "We got a right next frame! (%d)\n", action);
1400 clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME,
1401 &p2p->status);
1402
1403 brcmf_p2p_stop_wait_next_action_frame(cfg);
1404 }
1405
1406 mgmt_frame = kzalloc(offsetof(struct ieee80211_mgmt, u) +
1407 mgmt_frame_len, GFP_KERNEL);
1408 if (!mgmt_frame) {
1409 bphy_err(drvr, "No memory available for action frame\n");
1410 return -ENOMEM;
1411 }
1412 memcpy(mgmt_frame->da, ifp->mac_addr, ETH_ALEN);
1413 brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_BSSID, mgmt_frame->bssid,
1414 ETH_ALEN);
1415 memcpy(mgmt_frame->sa, e->addr, ETH_ALEN);
1416 mgmt_frame->frame_control = cpu_to_le16(IEEE80211_STYPE_ACTION);
1417 memcpy(&mgmt_frame->u, frame, mgmt_frame_len);
1418 mgmt_frame_len += offsetof(struct ieee80211_mgmt, u);
1419
1420 freq = ieee80211_channel_to_frequency(ch.control_ch_num,
1421 ch.band == BRCMU_CHAN_BAND_2G ?
1422 NL80211_BAND_2GHZ :
1423 NL80211_BAND_5GHZ);
1424
1425 wdev = &ifp->vif->wdev;
1426 cfg80211_rx_mgmt(wdev, freq, 0, (u8 *)mgmt_frame, mgmt_frame_len, 0);
1427
1428 kfree(mgmt_frame);
1429 return 0;
1430 }
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441 int brcmf_p2p_notify_action_tx_complete(struct brcmf_if *ifp,
1442 const struct brcmf_event_msg *e,
1443 void *data)
1444 {
1445 struct brcmf_cfg80211_info *cfg = ifp->drvr->config;
1446 struct brcmf_p2p_info *p2p = &cfg->p2p;
1447
1448 brcmf_dbg(INFO, "Enter: event %s, status=%d\n",
1449 e->event_code == BRCMF_E_ACTION_FRAME_OFF_CHAN_COMPLETE ?
1450 "ACTION_FRAME_OFF_CHAN_COMPLETE" : "ACTION_FRAME_COMPLETE",
1451 e->status);
1452
1453 if (!test_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status))
1454 return 0;
1455
1456 if (e->event_code == BRCMF_E_ACTION_FRAME_COMPLETE) {
1457 if (e->status == BRCMF_E_STATUS_SUCCESS) {
1458 set_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED,
1459 &p2p->status);
1460 if (!p2p->wait_for_offchan_complete)
1461 complete(&p2p->send_af_done);
1462 } else {
1463 set_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status);
1464
1465
1466
1467 brcmf_p2p_stop_wait_next_action_frame(cfg);
1468 }
1469
1470 } else {
1471 complete(&p2p->send_af_done);
1472 }
1473 return 0;
1474 }
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489 static s32 brcmf_p2p_tx_action_frame(struct brcmf_p2p_info *p2p,
1490 struct brcmf_fil_af_params_le *af_params)
1491 {
1492 struct brcmf_pub *drvr = p2p->cfg->pub;
1493 struct brcmf_cfg80211_vif *vif;
1494 s32 err = 0;
1495 s32 timeout = 0;
1496
1497 brcmf_dbg(TRACE, "Enter\n");
1498
1499 reinit_completion(&p2p->send_af_done);
1500 clear_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status);
1501 clear_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status);
1502
1503 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
1504 err = brcmf_fil_bsscfg_data_set(vif->ifp, "actframe", af_params,
1505 sizeof(*af_params));
1506 if (err) {
1507 bphy_err(drvr, " sending action frame has failed\n");
1508 goto exit;
1509 }
1510
1511 p2p->af_sent_channel = le32_to_cpu(af_params->channel);
1512 p2p->af_tx_sent_jiffies = jiffies;
1513
1514 if (test_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN, &p2p->status) &&
1515 p2p->af_sent_channel ==
1516 ieee80211_frequency_to_channel(p2p->remain_on_channel.center_freq))
1517 p2p->wait_for_offchan_complete = false;
1518 else
1519 p2p->wait_for_offchan_complete = true;
1520
1521 brcmf_dbg(TRACE, "Waiting for %s tx completion event\n",
1522 (p2p->wait_for_offchan_complete) ?
1523 "off-channel" : "on-channel");
1524
1525 timeout = wait_for_completion_timeout(&p2p->send_af_done,
1526 P2P_AF_MAX_WAIT_TIME);
1527
1528 if (test_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status)) {
1529 brcmf_dbg(TRACE, "TX action frame operation is success\n");
1530 } else {
1531 err = -EIO;
1532 brcmf_dbg(TRACE, "TX action frame operation has failed\n");
1533 }
1534
1535 clear_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status);
1536 clear_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status);
1537
1538 exit:
1539 return err;
1540 }
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552 static s32 brcmf_p2p_pub_af_tx(struct brcmf_cfg80211_info *cfg,
1553 struct brcmf_fil_af_params_le *af_params,
1554 struct brcmf_config_af_params *config_af_params)
1555 {
1556 struct brcmf_p2p_info *p2p = &cfg->p2p;
1557 struct brcmf_pub *drvr = cfg->pub;
1558 struct brcmf_fil_action_frame_le *action_frame;
1559 struct brcmf_p2p_pub_act_frame *act_frm;
1560 s32 err = 0;
1561 u16 ie_len;
1562
1563 action_frame = &af_params->action_frame;
1564 act_frm = (struct brcmf_p2p_pub_act_frame *)(action_frame->data);
1565
1566 config_af_params->extra_listen = true;
1567
1568 switch (act_frm->subtype) {
1569 case P2P_PAF_GON_REQ:
1570 brcmf_dbg(TRACE, "P2P: GO_NEG_PHASE status set\n");
1571 set_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);
1572 config_af_params->mpc_onoff = 0;
1573 config_af_params->search_channel = true;
1574 p2p->next_af_subtype = act_frm->subtype + 1;
1575 p2p->gon_req_action = true;
1576
1577 af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME);
1578 break;
1579 case P2P_PAF_GON_RSP:
1580 p2p->next_af_subtype = act_frm->subtype + 1;
1581
1582 af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME);
1583 break;
1584 case P2P_PAF_GON_CONF:
1585
1586 brcmf_dbg(TRACE, "P2P: GO_NEG_PHASE status cleared\n");
1587 clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);
1588
1589 config_af_params->mpc_onoff = 1;
1590
1591 af_params->dwell_time = cpu_to_le32(P2P_AF_MIN_DWELL_TIME);
1592 config_af_params->extra_listen = false;
1593 break;
1594 case P2P_PAF_INVITE_REQ:
1595 config_af_params->search_channel = true;
1596 p2p->next_af_subtype = act_frm->subtype + 1;
1597
1598 af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME);
1599 break;
1600 case P2P_PAF_INVITE_RSP:
1601
1602 af_params->dwell_time = cpu_to_le32(P2P_AF_MIN_DWELL_TIME);
1603 config_af_params->extra_listen = false;
1604 break;
1605 case P2P_PAF_DEVDIS_REQ:
1606 config_af_params->search_channel = true;
1607 p2p->next_af_subtype = act_frm->subtype + 1;
1608
1609 af_params->dwell_time = cpu_to_le32(P2P_AF_LONG_DWELL_TIME);
1610 break;
1611 case P2P_PAF_DEVDIS_RSP:
1612
1613 af_params->dwell_time = cpu_to_le32(P2P_AF_MIN_DWELL_TIME);
1614 config_af_params->extra_listen = false;
1615 break;
1616 case P2P_PAF_PROVDIS_REQ:
1617 ie_len = le16_to_cpu(action_frame->len) -
1618 offsetof(struct brcmf_p2p_pub_act_frame, elts);
1619 if (cfg80211_get_p2p_attr(&act_frm->elts[0], ie_len,
1620 IEEE80211_P2P_ATTR_GROUP_ID,
1621 NULL, 0) < 0)
1622 config_af_params->search_channel = true;
1623 config_af_params->mpc_onoff = 0;
1624 p2p->next_af_subtype = act_frm->subtype + 1;
1625
1626 af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME);
1627 break;
1628 case P2P_PAF_PROVDIS_RSP:
1629
1630 p2p->next_af_subtype = P2P_PAF_GON_REQ;
1631
1632 af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME);
1633 config_af_params->extra_listen = false;
1634 break;
1635 default:
1636 bphy_err(drvr, "Unknown p2p pub act frame subtype: %d\n",
1637 act_frm->subtype);
1638 err = -EINVAL;
1639 }
1640 return err;
1641 }
1642
1643
1644
1645
1646
1647
1648
1649
1650 bool brcmf_p2p_send_action_frame(struct brcmf_cfg80211_info *cfg,
1651 struct net_device *ndev,
1652 struct brcmf_fil_af_params_le *af_params)
1653 {
1654 struct brcmf_p2p_info *p2p = &cfg->p2p;
1655 struct brcmf_if *ifp = netdev_priv(ndev);
1656 struct brcmf_fil_action_frame_le *action_frame;
1657 struct brcmf_config_af_params config_af_params;
1658 struct afx_hdl *afx_hdl = &p2p->afx_hdl;
1659 struct brcmf_pub *drvr = cfg->pub;
1660 u16 action_frame_len;
1661 bool ack = false;
1662 u8 category;
1663 u8 action;
1664 s32 tx_retry;
1665 s32 extra_listen_time;
1666 uint delta_ms;
1667
1668 action_frame = &af_params->action_frame;
1669 action_frame_len = le16_to_cpu(action_frame->len);
1670
1671 brcmf_p2p_print_actframe(true, action_frame->data, action_frame_len);
1672
1673
1674
1675
1676 af_params->dwell_time = cpu_to_le32(P2P_AF_DWELL_TIME);
1677
1678 category = action_frame->data[DOT11_ACTION_CAT_OFF];
1679 action = action_frame->data[DOT11_ACTION_ACT_OFF];
1680
1681
1682 p2p->next_af_subtype = P2P_PAF_SUBTYPE_INVALID;
1683 p2p->gon_req_action = false;
1684
1685
1686 config_af_params.mpc_onoff = -1;
1687 config_af_params.search_channel = false;
1688 config_af_params.extra_listen = false;
1689
1690 if (brcmf_p2p_is_pub_action(action_frame->data, action_frame_len)) {
1691
1692 if (brcmf_p2p_pub_af_tx(cfg, af_params, &config_af_params)) {
1693
1694
1695 bphy_err(drvr, "P2P Public action frame, unknown subtype.\n");
1696 }
1697 } else if (brcmf_p2p_is_gas_action(action_frame->data,
1698 action_frame_len)) {
1699
1700 if (action == P2PSD_ACTION_ID_GAS_IREQ ||
1701 action == P2PSD_ACTION_ID_GAS_CREQ) {
1702
1703 config_af_params.search_channel = true;
1704
1705
1706
1707 p2p->next_af_subtype = action + 1;
1708
1709 af_params->dwell_time =
1710 cpu_to_le32(P2P_AF_MED_DWELL_TIME);
1711 } else if (action == P2PSD_ACTION_ID_GAS_IRESP ||
1712 action == P2PSD_ACTION_ID_GAS_CRESP) {
1713
1714 af_params->dwell_time =
1715 cpu_to_le32(P2P_AF_MIN_DWELL_TIME);
1716 } else {
1717 bphy_err(drvr, "Unknown action type: %d\n", action);
1718 goto exit;
1719 }
1720 } else if (brcmf_p2p_is_p2p_action(action_frame->data,
1721 action_frame_len)) {
1722
1723
1724 } else {
1725 bphy_err(drvr, "Unknown Frame: category 0x%x, action 0x%x\n",
1726 category, action);
1727 return false;
1728 }
1729
1730
1731
1732
1733 if (test_bit(BRCMF_VIF_STATUS_CONNECTING,
1734 &p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->sme_state))
1735 msleep(50);
1736
1737
1738 if (test_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status))
1739 brcmf_abort_scanning(cfg);
1740
1741 memcpy(afx_hdl->tx_dst_addr, action_frame->da, ETH_ALEN);
1742
1743
1744 if (config_af_params.mpc_onoff == 0)
1745 brcmf_set_mpc(ifp, 0);
1746
1747
1748 if (p2p->next_af_subtype != P2P_PAF_SUBTYPE_INVALID) {
1749
1750 set_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status);
1751 }
1752
1753 p2p->af_sent_channel = 0;
1754 set_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status);
1755
1756 if (config_af_params.search_channel &&
1757 IS_P2P_SOCIAL_CHANNEL(le32_to_cpu(af_params->channel)) &&
1758 p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif->saved_ie.probe_req_ie_len) {
1759 afx_hdl = &p2p->afx_hdl;
1760 afx_hdl->peer_listen_chan = le32_to_cpu(af_params->channel);
1761
1762 if (brcmf_p2p_af_searching_channel(p2p) ==
1763 P2P_INVALID_CHANNEL) {
1764 bphy_err(drvr, "Couldn't find peer's channel.\n");
1765 goto exit;
1766 }
1767
1768
1769
1770
1771
1772
1773 brcmf_notify_escan_complete(cfg, ifp, true, true);
1774
1775
1776 af_params->channel = cpu_to_le32(afx_hdl->peer_chan);
1777 }
1778
1779 tx_retry = 0;
1780 while (!p2p->block_gon_req_tx &&
1781 (ack == false) && (tx_retry < P2P_AF_TX_MAX_RETRY)) {
1782 ack = !brcmf_p2p_tx_action_frame(p2p, af_params);
1783 tx_retry++;
1784 }
1785 if (ack == false) {
1786 bphy_err(drvr, "Failed to send Action Frame(retry %d)\n",
1787 tx_retry);
1788 clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);
1789 }
1790
1791 exit:
1792 clear_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status);
1793
1794
1795
1796
1797
1798
1799 if (ack && config_af_params.extra_listen && !p2p->block_gon_req_tx &&
1800 test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status) &&
1801 p2p->af_sent_channel == afx_hdl->my_listen_chan) {
1802 delta_ms = jiffies_to_msecs(jiffies - p2p->af_tx_sent_jiffies);
1803 if (le32_to_cpu(af_params->dwell_time) > delta_ms)
1804 extra_listen_time = le32_to_cpu(af_params->dwell_time) -
1805 delta_ms;
1806 else
1807 extra_listen_time = 0;
1808 if (extra_listen_time > 50) {
1809 set_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN,
1810 &p2p->status);
1811 brcmf_dbg(INFO, "Wait more time! actual af time:%d, calculated extra listen:%d\n",
1812 le32_to_cpu(af_params->dwell_time),
1813 extra_listen_time);
1814 extra_listen_time += 100;
1815 if (!brcmf_p2p_discover_listen(p2p,
1816 p2p->af_sent_channel,
1817 extra_listen_time)) {
1818 unsigned long duration;
1819
1820 extra_listen_time += 100;
1821 duration = msecs_to_jiffies(extra_listen_time);
1822 wait_for_completion_timeout(&p2p->wait_next_af,
1823 duration);
1824 }
1825 clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN,
1826 &p2p->status);
1827 }
1828 }
1829
1830 if (p2p->block_gon_req_tx) {
1831
1832
1833
1834 p2p->block_gon_req_tx = false;
1835 ack = true;
1836 }
1837
1838 clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status);
1839
1840 if (config_af_params.mpc_onoff == 1)
1841 brcmf_set_mpc(ifp, 1);
1842
1843 return ack;
1844 }
1845
1846
1847
1848
1849
1850
1851
1852
1853 s32 brcmf_p2p_notify_rx_mgmt_p2p_probereq(struct brcmf_if *ifp,
1854 const struct brcmf_event_msg *e,
1855 void *data)
1856 {
1857 struct brcmf_cfg80211_info *cfg = ifp->drvr->config;
1858 struct brcmf_p2p_info *p2p = &cfg->p2p;
1859 struct afx_hdl *afx_hdl = &p2p->afx_hdl;
1860 struct brcmf_cfg80211_vif *vif = ifp->vif;
1861 struct brcmf_rx_mgmt_data *rxframe = (struct brcmf_rx_mgmt_data *)data;
1862 struct brcmu_chan ch;
1863 u8 *mgmt_frame;
1864 u32 mgmt_frame_len;
1865 s32 freq;
1866 u16 mgmt_type;
1867
1868 brcmf_dbg(INFO, "Enter: event %d reason %d\n", e->event_code,
1869 e->reason);
1870
1871 if (e->datalen < sizeof(*rxframe)) {
1872 brcmf_dbg(SCAN, "Event data to small. Ignore\n");
1873 return 0;
1874 }
1875
1876 ch.chspec = be16_to_cpu(rxframe->chanspec);
1877 cfg->d11inf.decchspec(&ch);
1878
1879 if (test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status) &&
1880 (ether_addr_equal(afx_hdl->tx_dst_addr, e->addr))) {
1881 afx_hdl->peer_chan = ch.control_ch_num;
1882 brcmf_dbg(INFO, "PROBE REQUEST: Peer found, channel=%d\n",
1883 afx_hdl->peer_chan);
1884 complete(&afx_hdl->act_frm_scan);
1885 }
1886
1887
1888
1889 if (e->bsscfgidx == 0)
1890 return 0;
1891
1892
1893 if (test_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status)) {
1894 brcmf_dbg(INFO, "Filtering P2P probe_req in GO-NEG phase\n");
1895 return 0;
1896 }
1897
1898
1899 brcmf_dbg(INFO, "vif->mgmt_rx_reg %04x\n", vif->mgmt_rx_reg);
1900 mgmt_type = (IEEE80211_STYPE_PROBE_REQ & IEEE80211_FCTL_STYPE) >> 4;
1901 if ((vif->mgmt_rx_reg & BIT(mgmt_type)) == 0)
1902 return 0;
1903
1904 mgmt_frame = (u8 *)(rxframe + 1);
1905 mgmt_frame_len = e->datalen - sizeof(*rxframe);
1906 freq = ieee80211_channel_to_frequency(ch.control_ch_num,
1907 ch.band == BRCMU_CHAN_BAND_2G ?
1908 NL80211_BAND_2GHZ :
1909 NL80211_BAND_5GHZ);
1910
1911 cfg80211_rx_mgmt(&vif->wdev, freq, 0, mgmt_frame, mgmt_frame_len, 0);
1912
1913 brcmf_dbg(INFO, "mgmt_frame_len (%d) , e->datalen (%d), chanspec (%04x), freq (%d)\n",
1914 mgmt_frame_len, e->datalen, ch.chspec, freq);
1915
1916 return 0;
1917 }
1918
1919
1920
1921
1922
1923
1924
1925
1926 static void brcmf_p2p_get_current_chanspec(struct brcmf_p2p_info *p2p,
1927 u16 *chanspec)
1928 {
1929 struct brcmf_if *ifp;
1930 u8 mac_addr[ETH_ALEN];
1931 struct brcmu_chan ch;
1932 struct brcmf_bss_info_le *bi;
1933 u8 *buf;
1934
1935 ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp;
1936
1937 if (brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_BSSID, mac_addr,
1938 ETH_ALEN) == 0) {
1939 buf = kzalloc(WL_BSS_INFO_MAX, GFP_KERNEL);
1940 if (buf != NULL) {
1941 *(__le32 *)buf = cpu_to_le32(WL_BSS_INFO_MAX);
1942 if (brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_BSS_INFO,
1943 buf, WL_BSS_INFO_MAX) == 0) {
1944 bi = (struct brcmf_bss_info_le *)(buf + 4);
1945 *chanspec = le16_to_cpu(bi->chanspec);
1946 kfree(buf);
1947 return;
1948 }
1949 kfree(buf);
1950 }
1951 }
1952
1953 ch.chnum = BRCMF_P2P_TEMP_CHAN;
1954 ch.bw = BRCMU_CHAN_BW_20;
1955 p2p->cfg->d11inf.encchspec(&ch);
1956 *chanspec = ch.chspec;
1957 }
1958
1959
1960
1961
1962
1963
1964
1965 int brcmf_p2p_ifchange(struct brcmf_cfg80211_info *cfg,
1966 enum brcmf_fil_p2p_if_types if_type)
1967 {
1968 struct brcmf_p2p_info *p2p = &cfg->p2p;
1969 struct brcmf_pub *drvr = cfg->pub;
1970 struct brcmf_cfg80211_vif *vif;
1971 struct brcmf_fil_p2p_if_le if_request;
1972 s32 err;
1973 u16 chanspec;
1974
1975 brcmf_dbg(TRACE, "Enter\n");
1976
1977 vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif;
1978 if (!vif) {
1979 bphy_err(drvr, "vif for P2PAPI_BSSCFG_PRIMARY does not exist\n");
1980 return -EPERM;
1981 }
1982 brcmf_notify_escan_complete(cfg, vif->ifp, true, true);
1983 vif = p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif;
1984 if (!vif) {
1985 bphy_err(drvr, "vif for P2PAPI_BSSCFG_CONNECTION does not exist\n");
1986 return -EPERM;
1987 }
1988 brcmf_set_mpc(vif->ifp, 0);
1989
1990
1991
1992
1993 brcmf_p2p_get_current_chanspec(p2p, &chanspec);
1994
1995 if_request.type = cpu_to_le16((u16)if_type);
1996 if_request.chspec = cpu_to_le16(chanspec);
1997 memcpy(if_request.addr, p2p->int_addr, sizeof(if_request.addr));
1998
1999 brcmf_cfg80211_arm_vif_event(cfg, vif);
2000 err = brcmf_fil_iovar_data_set(vif->ifp, "p2p_ifupd", &if_request,
2001 sizeof(if_request));
2002 if (err) {
2003 bphy_err(drvr, "p2p_ifupd FAILED, err=%d\n", err);
2004 brcmf_cfg80211_arm_vif_event(cfg, NULL);
2005 return err;
2006 }
2007 err = brcmf_cfg80211_wait_vif_event(cfg, BRCMF_E_IF_CHANGE,
2008 BRCMF_VIF_EVENT_TIMEOUT);
2009 brcmf_cfg80211_arm_vif_event(cfg, NULL);
2010 if (!err) {
2011 bphy_err(drvr, "No BRCMF_E_IF_CHANGE event received\n");
2012 return -EIO;
2013 }
2014
2015 err = brcmf_fil_cmd_int_set(vif->ifp, BRCMF_C_SET_SCB_TIMEOUT,
2016 BRCMF_SCB_TIMEOUT_VALUE);
2017
2018 return err;
2019 }
2020
2021 static int brcmf_p2p_request_p2p_if(struct brcmf_p2p_info *p2p,
2022 struct brcmf_if *ifp, u8 ea[ETH_ALEN],
2023 enum brcmf_fil_p2p_if_types iftype)
2024 {
2025 struct brcmf_fil_p2p_if_le if_request;
2026 int err;
2027 u16 chanspec;
2028
2029
2030 brcmf_p2p_get_current_chanspec(p2p, &chanspec);
2031
2032
2033 memcpy(if_request.addr, ea, ETH_ALEN);
2034 if_request.type = cpu_to_le16((u16)iftype);
2035 if_request.chspec = cpu_to_le16(chanspec);
2036
2037 err = brcmf_fil_iovar_data_set(ifp, "p2p_ifadd", &if_request,
2038 sizeof(if_request));
2039
2040 return err;
2041 }
2042
2043 static int brcmf_p2p_disable_p2p_if(struct brcmf_cfg80211_vif *vif)
2044 {
2045 struct brcmf_cfg80211_info *cfg = wdev_to_cfg(&vif->wdev);
2046 struct net_device *pri_ndev = cfg_to_ndev(cfg);
2047 struct brcmf_if *ifp = netdev_priv(pri_ndev);
2048 u8 *addr = vif->wdev.netdev->dev_addr;
2049
2050 return brcmf_fil_iovar_data_set(ifp, "p2p_ifdis", addr, ETH_ALEN);
2051 }
2052
2053 static int brcmf_p2p_release_p2p_if(struct brcmf_cfg80211_vif *vif)
2054 {
2055 struct brcmf_cfg80211_info *cfg = wdev_to_cfg(&vif->wdev);
2056 struct net_device *pri_ndev = cfg_to_ndev(cfg);
2057 struct brcmf_if *ifp = netdev_priv(pri_ndev);
2058 u8 *addr = vif->wdev.netdev->dev_addr;
2059
2060 return brcmf_fil_iovar_data_set(ifp, "p2p_ifdel", addr, ETH_ALEN);
2061 }
2062
2063
2064
2065
2066
2067
2068
2069
2070 static struct wireless_dev *brcmf_p2p_create_p2pdev(struct brcmf_p2p_info *p2p,
2071 struct wiphy *wiphy,
2072 u8 *addr)
2073 {
2074 struct brcmf_pub *drvr = p2p->cfg->pub;
2075 struct brcmf_cfg80211_vif *p2p_vif;
2076 struct brcmf_if *p2p_ifp;
2077 struct brcmf_if *pri_ifp;
2078 int err;
2079 u32 bsscfgidx;
2080
2081 if (p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif)
2082 return ERR_PTR(-ENOSPC);
2083
2084 p2p_vif = brcmf_alloc_vif(p2p->cfg, NL80211_IFTYPE_P2P_DEVICE);
2085 if (IS_ERR(p2p_vif)) {
2086 bphy_err(drvr, "could not create discovery vif\n");
2087 return (struct wireless_dev *)p2p_vif;
2088 }
2089
2090 pri_ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp;
2091
2092
2093 if (addr && ether_addr_equal(addr, pri_ifp->mac_addr)) {
2094 bphy_err(drvr, "discovery vif must be different from primary interface\n");
2095 err = -EINVAL;
2096 goto fail;
2097 }
2098
2099 brcmf_p2p_generate_bss_mac(p2p, addr);
2100 brcmf_p2p_set_firmware(pri_ifp, p2p->dev_addr);
2101
2102 brcmf_cfg80211_arm_vif_event(p2p->cfg, p2p_vif);
2103 brcmf_fweh_p2pdev_setup(pri_ifp, true);
2104
2105
2106 err = brcmf_fil_iovar_int_set(pri_ifp, "p2p_disc", 1);
2107 if (err < 0) {
2108 bphy_err(drvr, "set p2p_disc error\n");
2109 brcmf_fweh_p2pdev_setup(pri_ifp, false);
2110 brcmf_cfg80211_arm_vif_event(p2p->cfg, NULL);
2111 goto fail;
2112 }
2113
2114
2115 err = brcmf_cfg80211_wait_vif_event(p2p->cfg, BRCMF_E_IF_ADD,
2116 BRCMF_VIF_EVENT_TIMEOUT);
2117 brcmf_cfg80211_arm_vif_event(p2p->cfg, NULL);
2118 brcmf_fweh_p2pdev_setup(pri_ifp, false);
2119 if (!err) {
2120 bphy_err(drvr, "timeout occurred\n");
2121 err = -EIO;
2122 goto fail;
2123 }
2124
2125
2126 p2p_ifp = p2p_vif->ifp;
2127 p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif = p2p_vif;
2128 memcpy(p2p_ifp->mac_addr, p2p->dev_addr, ETH_ALEN);
2129 memcpy(&p2p_vif->wdev.address, p2p->dev_addr, sizeof(p2p->dev_addr));
2130
2131
2132 err = brcmf_fil_iovar_int_get(pri_ifp, "p2p_dev", &bsscfgidx);
2133 if (err < 0) {
2134 bphy_err(drvr, "retrieving discover bsscfg index failed\n");
2135 goto fail;
2136 }
2137
2138 WARN_ON(p2p_ifp->bsscfgidx != bsscfgidx);
2139
2140 init_completion(&p2p->send_af_done);
2141 INIT_WORK(&p2p->afx_hdl.afx_work, brcmf_p2p_afx_handler);
2142 init_completion(&p2p->afx_hdl.act_frm_scan);
2143 init_completion(&p2p->wait_next_af);
2144
2145 return &p2p_vif->wdev;
2146
2147 fail:
2148 brcmf_free_vif(p2p_vif);
2149 return ERR_PTR(err);
2150 }
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161 struct wireless_dev *brcmf_p2p_add_vif(struct wiphy *wiphy, const char *name,
2162 unsigned char name_assign_type,
2163 enum nl80211_iftype type,
2164 struct vif_params *params)
2165 {
2166 struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
2167 struct brcmf_if *ifp = netdev_priv(cfg_to_ndev(cfg));
2168 struct brcmf_pub *drvr = cfg->pub;
2169 struct brcmf_cfg80211_vif *vif;
2170 enum brcmf_fil_p2p_if_types iftype;
2171 int err;
2172
2173 if (brcmf_cfg80211_vif_event_armed(cfg))
2174 return ERR_PTR(-EBUSY);
2175
2176 brcmf_dbg(INFO, "adding vif \"%s\" (type=%d)\n", name, type);
2177
2178 switch (type) {
2179 case NL80211_IFTYPE_P2P_CLIENT:
2180 iftype = BRCMF_FIL_P2P_IF_CLIENT;
2181 break;
2182 case NL80211_IFTYPE_P2P_GO:
2183 iftype = BRCMF_FIL_P2P_IF_GO;
2184 break;
2185 case NL80211_IFTYPE_P2P_DEVICE:
2186 return brcmf_p2p_create_p2pdev(&cfg->p2p, wiphy,
2187 params->macaddr);
2188 default:
2189 return ERR_PTR(-EOPNOTSUPP);
2190 }
2191
2192 vif = brcmf_alloc_vif(cfg, type);
2193 if (IS_ERR(vif))
2194 return (struct wireless_dev *)vif;
2195 brcmf_cfg80211_arm_vif_event(cfg, vif);
2196
2197 err = brcmf_p2p_request_p2p_if(&cfg->p2p, ifp, cfg->p2p.int_addr,
2198 iftype);
2199 if (err) {
2200 brcmf_cfg80211_arm_vif_event(cfg, NULL);
2201 goto fail;
2202 }
2203
2204
2205 err = brcmf_cfg80211_wait_vif_event(cfg, BRCMF_E_IF_ADD,
2206 BRCMF_VIF_EVENT_TIMEOUT);
2207 brcmf_cfg80211_arm_vif_event(cfg, NULL);
2208 if (!err) {
2209 bphy_err(drvr, "timeout occurred\n");
2210 err = -EIO;
2211 goto fail;
2212 }
2213
2214
2215 ifp = vif->ifp;
2216 if (!ifp) {
2217 bphy_err(drvr, "no if pointer provided\n");
2218 err = -ENOENT;
2219 goto fail;
2220 }
2221
2222 strncpy(ifp->ndev->name, name, sizeof(ifp->ndev->name) - 1);
2223 ifp->ndev->name_assign_type = name_assign_type;
2224 err = brcmf_net_attach(ifp, true);
2225 if (err) {
2226 bphy_err(drvr, "Registering netdevice failed\n");
2227 free_netdev(ifp->ndev);
2228 goto fail;
2229 }
2230
2231 cfg->p2p.bss_idx[P2PAPI_BSSCFG_CONNECTION].vif = vif;
2232
2233 brcmf_fil_iovar_int_set(ifp, "roam_off", 1);
2234 if (iftype == BRCMF_FIL_P2P_IF_GO) {
2235
2236 brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCB_TIMEOUT,
2237 BRCMF_SCB_TIMEOUT_VALUE);
2238 }
2239 return &ifp->vif->wdev;
2240
2241 fail:
2242 brcmf_free_vif(vif);
2243 return ERR_PTR(err);
2244 }
2245
2246
2247
2248
2249
2250
2251
2252 int brcmf_p2p_del_vif(struct wiphy *wiphy, struct wireless_dev *wdev)
2253 {
2254 struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
2255 struct brcmf_p2p_info *p2p = &cfg->p2p;
2256 struct brcmf_cfg80211_vif *vif;
2257 enum nl80211_iftype iftype;
2258 bool wait_for_disable = false;
2259 int err;
2260
2261 brcmf_dbg(TRACE, "delete P2P vif\n");
2262 vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev);
2263
2264 iftype = vif->wdev.iftype;
2265 brcmf_cfg80211_arm_vif_event(cfg, vif);
2266 switch (iftype) {
2267 case NL80211_IFTYPE_P2P_CLIENT:
2268 if (test_bit(BRCMF_VIF_STATUS_DISCONNECTING, &vif->sme_state))
2269 wait_for_disable = true;
2270 break;
2271
2272 case NL80211_IFTYPE_P2P_GO:
2273 if (!brcmf_p2p_disable_p2p_if(vif))
2274 wait_for_disable = true;
2275 break;
2276
2277 case NL80211_IFTYPE_P2P_DEVICE:
2278 if (!p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif)
2279 return 0;
2280 brcmf_p2p_cancel_remain_on_channel(vif->ifp);
2281 brcmf_p2p_deinit_discovery(p2p);
2282 break;
2283
2284 default:
2285 return -ENOTSUPP;
2286 }
2287
2288 clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);
2289 brcmf_dbg(INFO, "P2P: GO_NEG_PHASE status cleared\n");
2290
2291 if (wait_for_disable)
2292 wait_for_completion_timeout(&cfg->vif_disabled,
2293 BRCMF_P2P_DISABLE_TIMEOUT);
2294
2295 err = 0;
2296 if (iftype != NL80211_IFTYPE_P2P_DEVICE) {
2297 brcmf_vif_clear_mgmt_ies(vif);
2298 err = brcmf_p2p_release_p2p_if(vif);
2299 }
2300 if (!err) {
2301
2302 err = brcmf_cfg80211_wait_vif_event(cfg, BRCMF_E_IF_DEL,
2303 BRCMF_VIF_EVENT_TIMEOUT);
2304 if (!err)
2305 err = -EIO;
2306 else
2307 err = 0;
2308 }
2309 brcmf_remove_interface(vif->ifp, true);
2310
2311 brcmf_cfg80211_arm_vif_event(cfg, NULL);
2312 if (iftype != NL80211_IFTYPE_P2P_DEVICE)
2313 p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif = NULL;
2314
2315 return err;
2316 }
2317
2318 void brcmf_p2p_ifp_removed(struct brcmf_if *ifp, bool rtnl_locked)
2319 {
2320 struct brcmf_cfg80211_info *cfg;
2321 struct brcmf_cfg80211_vif *vif;
2322
2323 brcmf_dbg(INFO, "P2P: device interface removed\n");
2324 vif = ifp->vif;
2325 cfg = wdev_to_cfg(&vif->wdev);
2326 cfg->p2p.bss_idx[P2PAPI_BSSCFG_DEVICE].vif = NULL;
2327 if (!rtnl_locked)
2328 rtnl_lock();
2329 cfg80211_unregister_wdev(&vif->wdev);
2330 if (!rtnl_locked)
2331 rtnl_unlock();
2332 brcmf_free_vif(vif);
2333 }
2334
2335 int brcmf_p2p_start_device(struct wiphy *wiphy, struct wireless_dev *wdev)
2336 {
2337 struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
2338 struct brcmf_p2p_info *p2p = &cfg->p2p;
2339 struct brcmf_cfg80211_vif *vif;
2340 int err;
2341
2342 vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev);
2343 mutex_lock(&cfg->usr_sync);
2344 err = brcmf_p2p_enable_discovery(p2p);
2345 if (!err)
2346 set_bit(BRCMF_VIF_STATUS_READY, &vif->sme_state);
2347 mutex_unlock(&cfg->usr_sync);
2348 return err;
2349 }
2350
2351 void brcmf_p2p_stop_device(struct wiphy *wiphy, struct wireless_dev *wdev)
2352 {
2353 struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
2354 struct brcmf_p2p_info *p2p = &cfg->p2p;
2355 struct brcmf_cfg80211_vif *vif;
2356
2357 vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev);
2358
2359
2360
2361
2362 if (p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif == vif) {
2363 mutex_lock(&cfg->usr_sync);
2364
2365 (void)brcmf_p2p_set_discover_state(vif->ifp,
2366 WL_P2P_DISC_ST_SCAN, 0, 0);
2367 brcmf_abort_scanning(cfg);
2368 clear_bit(BRCMF_VIF_STATUS_READY, &vif->sme_state);
2369 mutex_unlock(&cfg->usr_sync);
2370 }
2371 }
2372
2373
2374
2375
2376
2377
2378
2379 s32 brcmf_p2p_attach(struct brcmf_cfg80211_info *cfg, bool p2pdev_forced)
2380 {
2381 struct brcmf_pub *drvr = cfg->pub;
2382 struct brcmf_p2p_info *p2p;
2383 struct brcmf_if *pri_ifp;
2384 s32 err = 0;
2385 void *err_ptr;
2386
2387 p2p = &cfg->p2p;
2388 p2p->cfg = cfg;
2389
2390 pri_ifp = brcmf_get_ifp(cfg->pub, 0);
2391 p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif = pri_ifp->vif;
2392
2393 if (p2pdev_forced) {
2394 err_ptr = brcmf_p2p_create_p2pdev(p2p, NULL, NULL);
2395 if (IS_ERR(err_ptr)) {
2396 bphy_err(drvr, "P2P device creation failed.\n");
2397 err = PTR_ERR(err_ptr);
2398 }
2399 } else {
2400 p2p->p2pdev_dynamically = true;
2401 }
2402 return err;
2403 }
2404
2405
2406
2407
2408
2409
2410 void brcmf_p2p_detach(struct brcmf_p2p_info *p2p)
2411 {
2412 struct brcmf_cfg80211_vif *vif;
2413
2414 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
2415 if (vif != NULL) {
2416 brcmf_p2p_cancel_remain_on_channel(vif->ifp);
2417 brcmf_p2p_deinit_discovery(p2p);
2418 brcmf_remove_interface(vif->ifp, false);
2419 }
2420
2421 memset(p2p, 0, sizeof(*p2p));
2422 }
2423