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brcmfmac: fix reception of P2P probe requests on P2P_DEVICE interface
[deliverable/linux.git] / drivers / net / wireless / brcm80211 / brcmfmac / p2p.c
1 /*
2 * Copyright (c) 2012 Broadcom Corporation
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16 #include <linux/slab.h>
17 #include <linux/netdevice.h>
18 #include <linux/etherdevice.h>
19 #include <net/cfg80211.h>
20
21 #include <brcmu_wifi.h>
22 #include <brcmu_utils.h>
23 #include <defs.h>
24 #include <dhd.h>
25 #include <dhd_dbg.h>
26 #include "fwil.h"
27 #include "fwil_types.h"
28 #include "p2p.h"
29 #include "wl_cfg80211.h"
30
31 /* parameters used for p2p escan */
32 #define P2PAPI_SCAN_NPROBES 1
33 #define P2PAPI_SCAN_DWELL_TIME_MS 80
34 #define P2PAPI_SCAN_SOCIAL_DWELL_TIME_MS 40
35 #define P2PAPI_SCAN_HOME_TIME_MS 60
36 #define P2PAPI_SCAN_NPROBS_TIME_MS 30
37 #define P2PAPI_SCAN_AF_SEARCH_DWELL_TIME_MS 100
38 #define WL_SCAN_CONNECT_DWELL_TIME_MS 200
39 #define WL_SCAN_JOIN_PROBE_INTERVAL_MS 20
40
41 #define BRCMF_P2P_WILDCARD_SSID "DIRECT-"
42 #define BRCMF_P2P_WILDCARD_SSID_LEN (sizeof(BRCMF_P2P_WILDCARD_SSID) - 1)
43
44 #define SOCIAL_CHAN_1 1
45 #define SOCIAL_CHAN_2 6
46 #define SOCIAL_CHAN_3 11
47 #define IS_P2P_SOCIAL_CHANNEL(channel) ((channel == SOCIAL_CHAN_1) || \
48 (channel == SOCIAL_CHAN_2) || \
49 (channel == SOCIAL_CHAN_3))
50 #define SOCIAL_CHAN_CNT 3
51 #define AF_PEER_SEARCH_CNT 2
52
53 #define BRCMF_SCB_TIMEOUT_VALUE 20
54
55 #define P2P_VER 9 /* P2P version: 9=WiFi P2P v1.0 */
56 #define P2P_PUB_AF_CATEGORY 0x04
57 #define P2P_PUB_AF_ACTION 0x09
58 #define P2P_AF_CATEGORY 0x7f
59 #define P2P_OUI "\x50\x6F\x9A" /* P2P OUI */
60 #define P2P_OUI_LEN 3 /* P2P OUI length */
61
62 /* Action Frame Constants */
63 #define DOT11_ACTION_HDR_LEN 2 /* action frame category + action */
64 #define DOT11_ACTION_CAT_OFF 0 /* category offset */
65 #define DOT11_ACTION_ACT_OFF 1 /* action offset */
66
67 #define P2P_AF_DWELL_TIME 200
68 #define P2P_AF_MIN_DWELL_TIME 100
69 #define P2P_AF_MED_DWELL_TIME 400
70 #define P2P_AF_LONG_DWELL_TIME 1000
71 #define P2P_AF_TX_MAX_RETRY 1
72 #define P2P_AF_MAX_WAIT_TIME 2000
73 #define P2P_INVALID_CHANNEL -1
74 #define P2P_CHANNEL_SYNC_RETRY 5
75 #define P2P_AF_FRM_SCAN_MAX_WAIT 1500
76 #define P2P_DEFAULT_SLEEP_TIME_VSDB 200
77
78 /* WiFi P2P Public Action Frame OUI Subtypes */
79 #define P2P_PAF_GON_REQ 0 /* Group Owner Negotiation Req */
80 #define P2P_PAF_GON_RSP 1 /* Group Owner Negotiation Rsp */
81 #define P2P_PAF_GON_CONF 2 /* Group Owner Negotiation Confirm */
82 #define P2P_PAF_INVITE_REQ 3 /* P2P Invitation Request */
83 #define P2P_PAF_INVITE_RSP 4 /* P2P Invitation Response */
84 #define P2P_PAF_DEVDIS_REQ 5 /* Device Discoverability Request */
85 #define P2P_PAF_DEVDIS_RSP 6 /* Device Discoverability Response */
86 #define P2P_PAF_PROVDIS_REQ 7 /* Provision Discovery Request */
87 #define P2P_PAF_PROVDIS_RSP 8 /* Provision Discovery Response */
88 #define P2P_PAF_SUBTYPE_INVALID 255 /* Invalid Subtype */
89
90 /* WiFi P2P Action Frame OUI Subtypes */
91 #define P2P_AF_NOTICE_OF_ABSENCE 0 /* Notice of Absence */
92 #define P2P_AF_PRESENCE_REQ 1 /* P2P Presence Request */
93 #define P2P_AF_PRESENCE_RSP 2 /* P2P Presence Response */
94 #define P2P_AF_GO_DISC_REQ 3 /* GO Discoverability Request */
95
96 /* P2P Service Discovery related */
97 #define P2PSD_ACTION_CATEGORY 0x04 /* Public action frame */
98 #define P2PSD_ACTION_ID_GAS_IREQ 0x0a /* GAS Initial Request AF */
99 #define P2PSD_ACTION_ID_GAS_IRESP 0x0b /* GAS Initial Response AF */
100 #define P2PSD_ACTION_ID_GAS_CREQ 0x0c /* GAS Comback Request AF */
101 #define P2PSD_ACTION_ID_GAS_CRESP 0x0d /* GAS Comback Response AF */
102
103 /**
104 * struct brcmf_p2p_disc_st_le - set discovery state in firmware.
105 *
106 * @state: requested discovery state (see enum brcmf_p2p_disc_state).
107 * @chspec: channel parameter for %WL_P2P_DISC_ST_LISTEN state.
108 * @dwell: dwell time in ms for %WL_P2P_DISC_ST_LISTEN state.
109 */
110 struct brcmf_p2p_disc_st_le {
111 u8 state;
112 __le16 chspec;
113 __le16 dwell;
114 };
115
116 /**
117 * enum brcmf_p2p_disc_state - P2P discovery state values
118 *
119 * @WL_P2P_DISC_ST_SCAN: P2P discovery with wildcard SSID and P2P IE.
120 * @WL_P2P_DISC_ST_LISTEN: P2P discovery off-channel for specified time.
121 * @WL_P2P_DISC_ST_SEARCH: P2P discovery with P2P wildcard SSID and P2P IE.
122 */
123 enum brcmf_p2p_disc_state {
124 WL_P2P_DISC_ST_SCAN,
125 WL_P2P_DISC_ST_LISTEN,
126 WL_P2P_DISC_ST_SEARCH
127 };
128
129 /**
130 * struct brcmf_p2p_scan_le - P2P specific scan request.
131 *
132 * @type: type of scan method requested (values: 'E' or 'S').
133 * @reserved: reserved (ignored).
134 * @eparams: parameters used for type 'E'.
135 * @sparams: parameters used for type 'S'.
136 */
137 struct brcmf_p2p_scan_le {
138 u8 type;
139 u8 reserved[3];
140 union {
141 struct brcmf_escan_params_le eparams;
142 struct brcmf_scan_params_le sparams;
143 };
144 };
145
146 /**
147 * struct brcmf_p2p_pub_act_frame - WiFi P2P Public Action Frame
148 *
149 * @category: P2P_PUB_AF_CATEGORY
150 * @action: P2P_PUB_AF_ACTION
151 * @oui[3]: P2P_OUI
152 * @oui_type: OUI type - P2P_VER
153 * @subtype: OUI subtype - P2P_TYPE_*
154 * @dialog_token: nonzero, identifies req/rsp transaction
155 * @elts[1]: Variable length information elements.
156 */
157 struct brcmf_p2p_pub_act_frame {
158 u8 category;
159 u8 action;
160 u8 oui[3];
161 u8 oui_type;
162 u8 subtype;
163 u8 dialog_token;
164 u8 elts[1];
165 };
166
167 /**
168 * struct brcmf_p2p_action_frame - WiFi P2P Action Frame
169 *
170 * @category: P2P_AF_CATEGORY
171 * @OUI[3]: OUI - P2P_OUI
172 * @type: OUI Type - P2P_VER
173 * @subtype: OUI Subtype - P2P_AF_*
174 * @dialog_token: nonzero, identifies req/resp tranaction
175 * @elts[1]: Variable length information elements.
176 */
177 struct brcmf_p2p_action_frame {
178 u8 category;
179 u8 oui[3];
180 u8 type;
181 u8 subtype;
182 u8 dialog_token;
183 u8 elts[1];
184 };
185
186 /**
187 * struct brcmf_p2psd_gas_pub_act_frame - Wi-Fi GAS Public Action Frame
188 *
189 * @category: 0x04 Public Action Frame
190 * @action: 0x6c Advertisement Protocol
191 * @dialog_token: nonzero, identifies req/rsp transaction
192 * @query_data[1]: Query Data. SD gas ireq SD gas iresp
193 */
194 struct brcmf_p2psd_gas_pub_act_frame {
195 u8 category;
196 u8 action;
197 u8 dialog_token;
198 u8 query_data[1];
199 };
200
201 /**
202 * struct brcmf_config_af_params - Action Frame Parameters for tx.
203 *
204 * @mpc_onoff: To make sure to send successfully action frame, we have to
205 * turn off mpc 0: off, 1: on, (-1): do nothing
206 * @search_channel: 1: search peer's channel to send af
207 * extra_listen: keep the dwell time to get af response frame.
208 */
209 struct brcmf_config_af_params {
210 s32 mpc_onoff;
211 bool search_channel;
212 bool extra_listen;
213 };
214
215 /**
216 * brcmf_p2p_is_pub_action() - true if p2p public type frame.
217 *
218 * @frame: action frame data.
219 * @frame_len: length of action frame data.
220 *
221 * Determine if action frame is p2p public action type
222 */
223 static bool brcmf_p2p_is_pub_action(void *frame, u32 frame_len)
224 {
225 struct brcmf_p2p_pub_act_frame *pact_frm;
226
227 if (frame == NULL)
228 return false;
229
230 pact_frm = (struct brcmf_p2p_pub_act_frame *)frame;
231 if (frame_len < sizeof(struct brcmf_p2p_pub_act_frame) - 1)
232 return false;
233
234 if (pact_frm->category == P2P_PUB_AF_CATEGORY &&
235 pact_frm->action == P2P_PUB_AF_ACTION &&
236 pact_frm->oui_type == P2P_VER &&
237 memcmp(pact_frm->oui, P2P_OUI, P2P_OUI_LEN) == 0)
238 return true;
239
240 return false;
241 }
242
243 /**
244 * brcmf_p2p_is_p2p_action() - true if p2p action type frame.
245 *
246 * @frame: action frame data.
247 * @frame_len: length of action frame data.
248 *
249 * Determine if action frame is p2p action type
250 */
251 static bool brcmf_p2p_is_p2p_action(void *frame, u32 frame_len)
252 {
253 struct brcmf_p2p_action_frame *act_frm;
254
255 if (frame == NULL)
256 return false;
257
258 act_frm = (struct brcmf_p2p_action_frame *)frame;
259 if (frame_len < sizeof(struct brcmf_p2p_action_frame) - 1)
260 return false;
261
262 if (act_frm->category == P2P_AF_CATEGORY &&
263 act_frm->type == P2P_VER &&
264 memcmp(act_frm->oui, P2P_OUI, P2P_OUI_LEN) == 0)
265 return true;
266
267 return false;
268 }
269
270 /**
271 * brcmf_p2p_is_gas_action() - true if p2p gas action type frame.
272 *
273 * @frame: action frame data.
274 * @frame_len: length of action frame data.
275 *
276 * Determine if action frame is p2p gas action type
277 */
278 static bool brcmf_p2p_is_gas_action(void *frame, u32 frame_len)
279 {
280 struct brcmf_p2psd_gas_pub_act_frame *sd_act_frm;
281
282 if (frame == NULL)
283 return false;
284
285 sd_act_frm = (struct brcmf_p2psd_gas_pub_act_frame *)frame;
286 if (frame_len < sizeof(struct brcmf_p2psd_gas_pub_act_frame) - 1)
287 return false;
288
289 if (sd_act_frm->category != P2PSD_ACTION_CATEGORY)
290 return false;
291
292 if (sd_act_frm->action == P2PSD_ACTION_ID_GAS_IREQ ||
293 sd_act_frm->action == P2PSD_ACTION_ID_GAS_IRESP ||
294 sd_act_frm->action == P2PSD_ACTION_ID_GAS_CREQ ||
295 sd_act_frm->action == P2PSD_ACTION_ID_GAS_CRESP)
296 return true;
297
298 return false;
299 }
300
301 /**
302 * brcmf_p2p_print_actframe() - debug print routine.
303 *
304 * @tx: Received or to be transmitted
305 * @frame: action frame data.
306 * @frame_len: length of action frame data.
307 *
308 * Print information about the p2p action frame
309 */
310
311 #ifdef DEBUG
312
313 static void brcmf_p2p_print_actframe(bool tx, void *frame, u32 frame_len)
314 {
315 struct brcmf_p2p_pub_act_frame *pact_frm;
316 struct brcmf_p2p_action_frame *act_frm;
317 struct brcmf_p2psd_gas_pub_act_frame *sd_act_frm;
318
319 if (!frame || frame_len <= 2)
320 return;
321
322 if (brcmf_p2p_is_pub_action(frame, frame_len)) {
323 pact_frm = (struct brcmf_p2p_pub_act_frame *)frame;
324 switch (pact_frm->subtype) {
325 case P2P_PAF_GON_REQ:
326 brcmf_dbg(TRACE, "%s P2P Group Owner Negotiation Req Frame\n",
327 (tx) ? "TX" : "RX");
328 break;
329 case P2P_PAF_GON_RSP:
330 brcmf_dbg(TRACE, "%s P2P Group Owner Negotiation Rsp Frame\n",
331 (tx) ? "TX" : "RX");
332 break;
333 case P2P_PAF_GON_CONF:
334 brcmf_dbg(TRACE, "%s P2P Group Owner Negotiation Confirm Frame\n",
335 (tx) ? "TX" : "RX");
336 break;
337 case P2P_PAF_INVITE_REQ:
338 brcmf_dbg(TRACE, "%s P2P Invitation Request Frame\n",
339 (tx) ? "TX" : "RX");
340 break;
341 case P2P_PAF_INVITE_RSP:
342 brcmf_dbg(TRACE, "%s P2P Invitation Response Frame\n",
343 (tx) ? "TX" : "RX");
344 break;
345 case P2P_PAF_DEVDIS_REQ:
346 brcmf_dbg(TRACE, "%s P2P Device Discoverability Request Frame\n",
347 (tx) ? "TX" : "RX");
348 break;
349 case P2P_PAF_DEVDIS_RSP:
350 brcmf_dbg(TRACE, "%s P2P Device Discoverability Response Frame\n",
351 (tx) ? "TX" : "RX");
352 break;
353 case P2P_PAF_PROVDIS_REQ:
354 brcmf_dbg(TRACE, "%s P2P Provision Discovery Request Frame\n",
355 (tx) ? "TX" : "RX");
356 break;
357 case P2P_PAF_PROVDIS_RSP:
358 brcmf_dbg(TRACE, "%s P2P Provision Discovery Response Frame\n",
359 (tx) ? "TX" : "RX");
360 break;
361 default:
362 brcmf_dbg(TRACE, "%s Unknown P2P Public Action Frame\n",
363 (tx) ? "TX" : "RX");
364 break;
365 }
366 } else if (brcmf_p2p_is_p2p_action(frame, frame_len)) {
367 act_frm = (struct brcmf_p2p_action_frame *)frame;
368 switch (act_frm->subtype) {
369 case P2P_AF_NOTICE_OF_ABSENCE:
370 brcmf_dbg(TRACE, "%s P2P Notice of Absence Frame\n",
371 (tx) ? "TX" : "RX");
372 break;
373 case P2P_AF_PRESENCE_REQ:
374 brcmf_dbg(TRACE, "%s P2P Presence Request Frame\n",
375 (tx) ? "TX" : "RX");
376 break;
377 case P2P_AF_PRESENCE_RSP:
378 brcmf_dbg(TRACE, "%s P2P Presence Response Frame\n",
379 (tx) ? "TX" : "RX");
380 break;
381 case P2P_AF_GO_DISC_REQ:
382 brcmf_dbg(TRACE, "%s P2P Discoverability Request Frame\n",
383 (tx) ? "TX" : "RX");
384 break;
385 default:
386 brcmf_dbg(TRACE, "%s Unknown P2P Action Frame\n",
387 (tx) ? "TX" : "RX");
388 }
389
390 } else if (brcmf_p2p_is_gas_action(frame, frame_len)) {
391 sd_act_frm = (struct brcmf_p2psd_gas_pub_act_frame *)frame;
392 switch (sd_act_frm->action) {
393 case P2PSD_ACTION_ID_GAS_IREQ:
394 brcmf_dbg(TRACE, "%s P2P GAS Initial Request\n",
395 (tx) ? "TX" : "RX");
396 break;
397 case P2PSD_ACTION_ID_GAS_IRESP:
398 brcmf_dbg(TRACE, "%s P2P GAS Initial Response\n",
399 (tx) ? "TX" : "RX");
400 break;
401 case P2PSD_ACTION_ID_GAS_CREQ:
402 brcmf_dbg(TRACE, "%s P2P GAS Comback Request\n",
403 (tx) ? "TX" : "RX");
404 break;
405 case P2PSD_ACTION_ID_GAS_CRESP:
406 brcmf_dbg(TRACE, "%s P2P GAS Comback Response\n",
407 (tx) ? "TX" : "RX");
408 break;
409 default:
410 brcmf_dbg(TRACE, "%s Unknown P2P GAS Frame\n",
411 (tx) ? "TX" : "RX");
412 break;
413 }
414 }
415 }
416
417 #else
418
419 static void brcmf_p2p_print_actframe(bool tx, void *frame, u32 frame_len)
420 {
421 }
422
423 #endif
424
425
426 /**
427 * brcmf_p2p_chnr_to_chspec() - convert channel number to chanspec.
428 *
429 * @channel: channel number
430 */
431 static u16 brcmf_p2p_chnr_to_chspec(u16 channel)
432 {
433 u16 chanspec;
434
435 chanspec = channel & WL_CHANSPEC_CHAN_MASK;
436
437 if (channel <= CH_MAX_2G_CHANNEL)
438 chanspec |= WL_CHANSPEC_BAND_2G;
439 else
440 chanspec |= WL_CHANSPEC_BAND_5G;
441
442 chanspec |= WL_CHANSPEC_BW_20;
443 chanspec |= WL_CHANSPEC_CTL_SB_NONE;
444
445 return chanspec;
446 }
447
448
449 /**
450 * brcmf_p2p_set_firmware() - prepare firmware for peer-to-peer operation.
451 *
452 * @ifp: ifp to use for iovars (primary).
453 * @p2p_mac: mac address to configure for p2p_da_override
454 */
455 static int brcmf_p2p_set_firmware(struct brcmf_if *ifp, u8 *p2p_mac)
456 {
457 s32 ret = 0;
458
459 brcmf_fil_cmd_int_set(ifp, BRCMF_C_DOWN, 1);
460 brcmf_fil_iovar_int_set(ifp, "apsta", 1);
461 brcmf_fil_cmd_int_set(ifp, BRCMF_C_UP, 1);
462
463 /* In case of COB type, firmware has default mac address
464 * After Initializing firmware, we have to set current mac address to
465 * firmware for P2P device address
466 */
467 ret = brcmf_fil_iovar_data_set(ifp, "p2p_da_override", p2p_mac,
468 ETH_ALEN);
469 if (ret)
470 brcmf_err("failed to update device address ret %d\n", ret);
471
472 return ret;
473 }
474
475 /**
476 * brcmf_p2p_generate_bss_mac() - derive mac addresses for P2P.
477 *
478 * @p2p: P2P specific data.
479 * @dev_addr: optional device address.
480 *
481 * P2P needs mac addresses for P2P device and interface. If no device
482 * address it specified, these are derived from the primary net device, ie.
483 * the permanent ethernet address of the device.
484 */
485 static void brcmf_p2p_generate_bss_mac(struct brcmf_p2p_info *p2p, u8 *dev_addr)
486 {
487 struct brcmf_if *pri_ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp;
488 bool local_admin = false;
489
490 if (!dev_addr || is_zero_ether_addr(dev_addr)) {
491 dev_addr = pri_ifp->mac_addr;
492 local_admin = true;
493 }
494
495 /* Generate the P2P Device Address. This consists of the device's
496 * primary MAC address with the locally administered bit set.
497 */
498 memcpy(p2p->dev_addr, dev_addr, ETH_ALEN);
499 if (local_admin)
500 p2p->dev_addr[0] |= 0x02;
501
502 /* Generate the P2P Interface Address. If the discovery and connection
503 * BSSCFGs need to simultaneously co-exist, then this address must be
504 * different from the P2P Device Address, but also locally administered.
505 */
506 memcpy(p2p->int_addr, p2p->dev_addr, ETH_ALEN);
507 p2p->int_addr[0] |= 0x02;
508 p2p->int_addr[4] ^= 0x80;
509 }
510
511 /**
512 * brcmf_p2p_scan_is_p2p_request() - is cfg80211 scan request a P2P scan.
513 *
514 * @request: the scan request as received from cfg80211.
515 *
516 * returns true if one of the ssids in the request matches the
517 * P2P wildcard ssid; otherwise returns false.
518 */
519 static bool brcmf_p2p_scan_is_p2p_request(struct cfg80211_scan_request *request)
520 {
521 struct cfg80211_ssid *ssids = request->ssids;
522 int i;
523
524 for (i = 0; i < request->n_ssids; i++) {
525 if (ssids[i].ssid_len != BRCMF_P2P_WILDCARD_SSID_LEN)
526 continue;
527
528 brcmf_dbg(INFO, "comparing ssid \"%s\"", ssids[i].ssid);
529 if (!memcmp(BRCMF_P2P_WILDCARD_SSID, ssids[i].ssid,
530 BRCMF_P2P_WILDCARD_SSID_LEN))
531 return true;
532 }
533 return false;
534 }
535
536 /**
537 * brcmf_p2p_set_discover_state - set discover state in firmware.
538 *
539 * @ifp: low-level interface object.
540 * @state: discover state to set.
541 * @chanspec: channel parameters (for state @WL_P2P_DISC_ST_LISTEN only).
542 * @listen_ms: duration to listen (for state @WL_P2P_DISC_ST_LISTEN only).
543 */
544 static s32 brcmf_p2p_set_discover_state(struct brcmf_if *ifp, u8 state,
545 u16 chanspec, u16 listen_ms)
546 {
547 struct brcmf_p2p_disc_st_le discover_state;
548 s32 ret = 0;
549 brcmf_dbg(TRACE, "enter\n");
550
551 discover_state.state = state;
552 discover_state.chspec = cpu_to_le16(chanspec);
553 discover_state.dwell = cpu_to_le16(listen_ms);
554 ret = brcmf_fil_bsscfg_data_set(ifp, "p2p_state", &discover_state,
555 sizeof(discover_state));
556 return ret;
557 }
558
559 /**
560 * brcmf_p2p_deinit_discovery() - disable P2P device discovery.
561 *
562 * @p2p: P2P specific data.
563 *
564 * Resets the discovery state and disables it in firmware.
565 */
566 static s32 brcmf_p2p_deinit_discovery(struct brcmf_p2p_info *p2p)
567 {
568 struct brcmf_cfg80211_vif *vif;
569
570 brcmf_dbg(TRACE, "enter\n");
571
572 /* Set the discovery state to SCAN */
573 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
574 (void)brcmf_p2p_set_discover_state(vif->ifp, WL_P2P_DISC_ST_SCAN, 0, 0);
575
576 /* Disable P2P discovery in the firmware */
577 vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif;
578 (void)brcmf_fil_iovar_int_set(vif->ifp, "p2p_disc", 0);
579
580 return 0;
581 }
582
583 /**
584 * brcmf_p2p_enable_discovery() - initialize and configure discovery.
585 *
586 * @p2p: P2P specific data.
587 *
588 * Initializes the discovery device and configure the virtual interface.
589 */
590 static int brcmf_p2p_enable_discovery(struct brcmf_p2p_info *p2p)
591 {
592 struct brcmf_cfg80211_vif *vif;
593 s32 ret = 0;
594
595 brcmf_dbg(TRACE, "enter\n");
596 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
597 if (!vif) {
598 brcmf_err("P2P config device not available\n");
599 ret = -EPERM;
600 goto exit;
601 }
602
603 if (test_bit(BRCMF_P2P_STATUS_ENABLED, &p2p->status)) {
604 brcmf_dbg(INFO, "P2P config device already configured\n");
605 goto exit;
606 }
607
608 /* Re-initialize P2P Discovery in the firmware */
609 vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif;
610 ret = brcmf_fil_iovar_int_set(vif->ifp, "p2p_disc", 1);
611 if (ret < 0) {
612 brcmf_err("set p2p_disc error\n");
613 goto exit;
614 }
615 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
616 ret = brcmf_p2p_set_discover_state(vif->ifp, WL_P2P_DISC_ST_SCAN, 0, 0);
617 if (ret < 0) {
618 brcmf_err("unable to set WL_P2P_DISC_ST_SCAN\n");
619 goto exit;
620 }
621
622 /*
623 * Set wsec to any non-zero value in the discovery bsscfg
624 * to ensure our P2P probe responses have the privacy bit
625 * set in the 802.11 WPA IE. Some peer devices may not
626 * initiate WPS with us if this bit is not set.
627 */
628 ret = brcmf_fil_bsscfg_int_set(vif->ifp, "wsec", AES_ENABLED);
629 if (ret < 0) {
630 brcmf_err("wsec error %d\n", ret);
631 goto exit;
632 }
633
634 set_bit(BRCMF_P2P_STATUS_ENABLED, &p2p->status);
635 exit:
636 return ret;
637 }
638
639 /**
640 * brcmf_p2p_escan() - initiate a P2P scan.
641 *
642 * @p2p: P2P specific data.
643 * @num_chans: number of channels to scan.
644 * @chanspecs: channel parameters for @num_chans channels.
645 * @search_state: P2P discover state to use.
646 * @action: scan action to pass to firmware.
647 * @bss_type: type of P2P bss.
648 */
649 static s32 brcmf_p2p_escan(struct brcmf_p2p_info *p2p, u32 num_chans,
650 u16 chanspecs[], s32 search_state, u16 action,
651 enum p2p_bss_type bss_type)
652 {
653 s32 ret = 0;
654 s32 memsize = offsetof(struct brcmf_p2p_scan_le,
655 eparams.params_le.channel_list);
656 s32 nprobes;
657 s32 active;
658 u32 i;
659 u8 *memblk;
660 struct brcmf_cfg80211_vif *vif;
661 struct brcmf_p2p_scan_le *p2p_params;
662 struct brcmf_scan_params_le *sparams;
663 struct brcmf_ssid ssid;
664
665 memsize += num_chans * sizeof(__le16);
666 memblk = kzalloc(memsize, GFP_KERNEL);
667 if (!memblk)
668 return -ENOMEM;
669
670 vif = p2p->bss_idx[bss_type].vif;
671 if (vif == NULL) {
672 brcmf_err("no vif for bss type %d\n", bss_type);
673 ret = -EINVAL;
674 goto exit;
675 }
676
677 switch (search_state) {
678 case WL_P2P_DISC_ST_SEARCH:
679 /*
680 * If we in SEARCH STATE, we don't need to set SSID explictly
681 * because dongle use P2P WILDCARD internally by default
682 */
683 /* use null ssid */
684 ssid.SSID_len = 0;
685 memset(ssid.SSID, 0, sizeof(ssid.SSID));
686 break;
687 case WL_P2P_DISC_ST_SCAN:
688 /*
689 * wpa_supplicant has p2p_find command with type social or
690 * progressive. For progressive, we need to set the ssid to
691 * P2P WILDCARD because we just do broadcast scan unless
692 * setting SSID.
693 */
694 ssid.SSID_len = BRCMF_P2P_WILDCARD_SSID_LEN;
695 memcpy(ssid.SSID, BRCMF_P2P_WILDCARD_SSID, ssid.SSID_len);
696 break;
697 default:
698 brcmf_err(" invalid search state %d\n", search_state);
699 ret = -EINVAL;
700 goto exit;
701 }
702
703 brcmf_p2p_set_discover_state(vif->ifp, search_state, 0, 0);
704
705 /*
706 * set p2p scan parameters.
707 */
708 p2p_params = (struct brcmf_p2p_scan_le *)memblk;
709 p2p_params->type = 'E';
710
711 /* determine the scan engine parameters */
712 sparams = &p2p_params->eparams.params_le;
713 sparams->bss_type = DOT11_BSSTYPE_ANY;
714 if (p2p->cfg->active_scan)
715 sparams->scan_type = 0;
716 else
717 sparams->scan_type = 1;
718
719 memset(&sparams->bssid, 0xFF, ETH_ALEN);
720 if (ssid.SSID_len)
721 memcpy(sparams->ssid_le.SSID, ssid.SSID, ssid.SSID_len);
722 sparams->ssid_le.SSID_len = cpu_to_le32(ssid.SSID_len);
723 sparams->home_time = cpu_to_le32(P2PAPI_SCAN_HOME_TIME_MS);
724
725 /*
726 * SOCIAL_CHAN_CNT + 1 takes care of the Progressive scan
727 * supported by the supplicant.
728 */
729 if (num_chans == SOCIAL_CHAN_CNT || num_chans == (SOCIAL_CHAN_CNT + 1))
730 active = P2PAPI_SCAN_SOCIAL_DWELL_TIME_MS;
731 else if (num_chans == AF_PEER_SEARCH_CNT)
732 active = P2PAPI_SCAN_AF_SEARCH_DWELL_TIME_MS;
733 else if (wl_get_vif_state_all(p2p->cfg, BRCMF_VIF_STATUS_CONNECTED))
734 active = -1;
735 else
736 active = P2PAPI_SCAN_DWELL_TIME_MS;
737
738 /* Override scan params to find a peer for a connection */
739 if (num_chans == 1) {
740 active = WL_SCAN_CONNECT_DWELL_TIME_MS;
741 /* WAR to sync with presence period of VSDB GO.
742 * send probe request more frequently
743 */
744 nprobes = active / WL_SCAN_JOIN_PROBE_INTERVAL_MS;
745 } else {
746 nprobes = active / P2PAPI_SCAN_NPROBS_TIME_MS;
747 }
748
749 if (nprobes <= 0)
750 nprobes = 1;
751
752 brcmf_dbg(INFO, "nprobes # %d, active_time %d\n", nprobes, active);
753 sparams->active_time = cpu_to_le32(active);
754 sparams->nprobes = cpu_to_le32(nprobes);
755 sparams->passive_time = cpu_to_le32(-1);
756 sparams->channel_num = cpu_to_le32(num_chans &
757 BRCMF_SCAN_PARAMS_COUNT_MASK);
758 for (i = 0; i < num_chans; i++)
759 sparams->channel_list[i] = cpu_to_le16(chanspecs[i]);
760
761 /* set the escan specific parameters */
762 p2p_params->eparams.version = cpu_to_le32(BRCMF_ESCAN_REQ_VERSION);
763 p2p_params->eparams.action = cpu_to_le16(action);
764 p2p_params->eparams.sync_id = cpu_to_le16(0x1234);
765 /* perform p2p scan on primary device */
766 ret = brcmf_fil_bsscfg_data_set(vif->ifp, "p2p_scan", memblk, memsize);
767 if (!ret)
768 set_bit(BRCMF_SCAN_STATUS_BUSY, &p2p->cfg->scan_status);
769 exit:
770 kfree(memblk);
771 return ret;
772 }
773
774 /**
775 * brcmf_p2p_run_escan() - escan callback for peer-to-peer.
776 *
777 * @cfg: driver private data for cfg80211 interface.
778 * @ndev: net device for which scan is requested.
779 * @request: scan request from cfg80211.
780 * @action: scan action.
781 *
782 * Determines the P2P discovery state based to scan request parameters and
783 * validates the channels in the request.
784 */
785 static s32 brcmf_p2p_run_escan(struct brcmf_cfg80211_info *cfg,
786 struct brcmf_if *ifp,
787 struct cfg80211_scan_request *request,
788 u16 action)
789 {
790 struct brcmf_p2p_info *p2p = &cfg->p2p;
791 s32 err = 0;
792 s32 search_state = WL_P2P_DISC_ST_SCAN;
793 struct brcmf_cfg80211_vif *vif;
794 struct net_device *dev = NULL;
795 int i, num_nodfs = 0;
796 u16 *chanspecs;
797
798 brcmf_dbg(TRACE, "enter\n");
799
800 if (!request) {
801 err = -EINVAL;
802 goto exit;
803 }
804
805 if (request->n_channels) {
806 chanspecs = kcalloc(request->n_channels, sizeof(*chanspecs),
807 GFP_KERNEL);
808 if (!chanspecs) {
809 err = -ENOMEM;
810 goto exit;
811 }
812 vif = p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif;
813 if (vif)
814 dev = vif->wdev.netdev;
815 if (request->n_channels == 3 &&
816 request->channels[0]->hw_value == SOCIAL_CHAN_1 &&
817 request->channels[1]->hw_value == SOCIAL_CHAN_2 &&
818 request->channels[2]->hw_value == SOCIAL_CHAN_3) {
819 /* SOCIAL CHANNELS 1, 6, 11 */
820 search_state = WL_P2P_DISC_ST_SEARCH;
821 brcmf_dbg(INFO, "P2P SEARCH PHASE START\n");
822 } else if (dev != NULL && vif->mode == WL_MODE_AP) {
823 /* If you are already a GO, then do SEARCH only */
824 brcmf_dbg(INFO, "Already a GO. Do SEARCH Only\n");
825 search_state = WL_P2P_DISC_ST_SEARCH;
826 } else {
827 brcmf_dbg(INFO, "P2P SCAN STATE START\n");
828 }
829
830 /*
831 * no P2P scanning on passive or DFS channels.
832 */
833 for (i = 0; i < request->n_channels; i++) {
834 struct ieee80211_channel *chan = request->channels[i];
835
836 if (chan->flags & (IEEE80211_CHAN_RADAR |
837 IEEE80211_CHAN_PASSIVE_SCAN))
838 continue;
839
840 chanspecs[i] = channel_to_chanspec(chan);
841 brcmf_dbg(INFO, "%d: chan=%d, channel spec=%x\n",
842 num_nodfs, chan->hw_value, chanspecs[i]);
843 num_nodfs++;
844 }
845 err = brcmf_p2p_escan(p2p, num_nodfs, chanspecs, search_state,
846 action, P2PAPI_BSSCFG_DEVICE);
847 }
848 exit:
849 if (err)
850 brcmf_err("error (%d)\n", err);
851 return err;
852 }
853
854
855 /**
856 * brcmf_p2p_find_listen_channel() - find listen channel in ie string.
857 *
858 * @ie: string of information elements.
859 * @ie_len: length of string.
860 *
861 * Scan ie for p2p ie and look for attribute 6 channel. If available determine
862 * channel and return it.
863 */
864 static s32 brcmf_p2p_find_listen_channel(const u8 *ie, u32 ie_len)
865 {
866 u8 channel_ie[5];
867 s32 listen_channel;
868 s32 err;
869
870 err = cfg80211_get_p2p_attr(ie, ie_len,
871 IEEE80211_P2P_ATTR_LISTEN_CHANNEL,
872 channel_ie, sizeof(channel_ie));
873 if (err < 0)
874 return err;
875
876 /* listen channel subel length format: */
877 /* 3(country) + 1(op. class) + 1(chan num) */
878 listen_channel = (s32)channel_ie[3 + 1];
879
880 if (listen_channel == SOCIAL_CHAN_1 ||
881 listen_channel == SOCIAL_CHAN_2 ||
882 listen_channel == SOCIAL_CHAN_3) {
883 brcmf_dbg(INFO, "Found my Listen Channel %d\n", listen_channel);
884 return listen_channel;
885 }
886
887 return -EPERM;
888 }
889
890
891 /**
892 * brcmf_p2p_scan_prep() - prepare scan based on request.
893 *
894 * @wiphy: wiphy device.
895 * @request: scan request from cfg80211.
896 * @vif: vif on which scan request is to be executed.
897 *
898 * Prepare the scan appropriately for type of scan requested. Overrides the
899 * escan .run() callback for peer-to-peer scanning.
900 */
901 int brcmf_p2p_scan_prep(struct wiphy *wiphy,
902 struct cfg80211_scan_request *request,
903 struct brcmf_cfg80211_vif *vif)
904 {
905 struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
906 struct brcmf_p2p_info *p2p = &cfg->p2p;
907 int err = 0;
908
909 if (brcmf_p2p_scan_is_p2p_request(request)) {
910 /* find my listen channel */
911 err = brcmf_p2p_find_listen_channel(request->ie,
912 request->ie_len);
913 if (err < 0)
914 return err;
915
916 p2p->afx_hdl.my_listen_chan = err;
917
918 clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);
919 brcmf_dbg(INFO, "P2P: GO_NEG_PHASE status cleared\n");
920
921 err = brcmf_p2p_enable_discovery(p2p);
922 if (err)
923 return err;
924
925 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
926
927 /* override .run_escan() callback. */
928 cfg->escan_info.run = brcmf_p2p_run_escan;
929 }
930 err = brcmf_vif_set_mgmt_ie(vif, BRCMF_VNDR_IE_PRBREQ_FLAG,
931 request->ie, request->ie_len);
932 return err;
933 }
934
935
936 /**
937 * brcmf_p2p_discover_listen() - set firmware to discover listen state.
938 *
939 * @p2p: p2p device.
940 * @channel: channel nr for discover listen.
941 * @duration: time in ms to stay on channel.
942 *
943 */
944 static s32
945 brcmf_p2p_discover_listen(struct brcmf_p2p_info *p2p, u16 channel, u32 duration)
946 {
947 struct brcmf_cfg80211_vif *vif;
948 s32 err = 0;
949 u16 chanspec;
950
951 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
952 if (!vif) {
953 brcmf_err("Discovery is not set, so we have nothing to do\n");
954 err = -EPERM;
955 goto exit;
956 }
957
958 if (test_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN, &p2p->status)) {
959 brcmf_err("Previous LISTEN is not completed yet\n");
960 /* WAR: prevent cookie mismatch in wpa_supplicant return OK */
961 goto exit;
962 }
963
964 chanspec = brcmf_p2p_chnr_to_chspec(channel);
965 err = brcmf_p2p_set_discover_state(vif->ifp, WL_P2P_DISC_ST_LISTEN,
966 chanspec, (u16)duration);
967 if (!err) {
968 set_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN, &p2p->status);
969 p2p->remain_on_channel_cookie++;
970 }
971 exit:
972 return err;
973 }
974
975
976 /**
977 * brcmf_p2p_remain_on_channel() - put device on channel and stay there.
978 *
979 * @wiphy: wiphy device.
980 * @channel: channel to stay on.
981 * @duration: time in ms to remain on channel.
982 *
983 */
984 int brcmf_p2p_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
985 struct ieee80211_channel *channel,
986 unsigned int duration, u64 *cookie)
987 {
988 struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
989 struct brcmf_p2p_info *p2p = &cfg->p2p;
990 s32 err;
991 u16 channel_nr;
992
993 channel_nr = ieee80211_frequency_to_channel(channel->center_freq);
994 brcmf_dbg(TRACE, "Enter, channel: %d, duration ms (%d)\n", channel_nr,
995 duration);
996
997 err = brcmf_p2p_enable_discovery(p2p);
998 if (err)
999 goto exit;
1000 err = brcmf_p2p_discover_listen(p2p, channel_nr, duration);
1001 if (err)
1002 goto exit;
1003
1004 memcpy(&p2p->remain_on_channel, channel, sizeof(*channel));
1005 *cookie = p2p->remain_on_channel_cookie;
1006 cfg80211_ready_on_channel(wdev, *cookie, channel, duration, GFP_KERNEL);
1007
1008 exit:
1009 return err;
1010 }
1011
1012
1013 /**
1014 * brcmf_p2p_notify_listen_complete() - p2p listen has completed.
1015 *
1016 * @ifp: interfac control.
1017 * @e: event message. Not used, to make it usable for fweh event dispatcher.
1018 * @data: payload of message. Not used.
1019 *
1020 */
1021 int brcmf_p2p_notify_listen_complete(struct brcmf_if *ifp,
1022 const struct brcmf_event_msg *e,
1023 void *data)
1024 {
1025 struct brcmf_cfg80211_info *cfg = ifp->drvr->config;
1026 struct brcmf_p2p_info *p2p = &cfg->p2p;
1027
1028 brcmf_dbg(TRACE, "Enter\n");
1029 if (test_and_clear_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN,
1030 &p2p->status)) {
1031 if (test_and_clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN,
1032 &p2p->status)) {
1033 clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME,
1034 &p2p->status);
1035 brcmf_dbg(INFO, "Listen DONE, wake up wait_next_af\n");
1036 complete(&p2p->wait_next_af);
1037 }
1038
1039 cfg80211_remain_on_channel_expired(&ifp->vif->wdev,
1040 p2p->remain_on_channel_cookie,
1041 &p2p->remain_on_channel,
1042 GFP_KERNEL);
1043 }
1044 return 0;
1045 }
1046
1047
1048 /**
1049 * brcmf_p2p_cancel_remain_on_channel() - cancel p2p listen state.
1050 *
1051 * @ifp: interfac control.
1052 *
1053 */
1054 void brcmf_p2p_cancel_remain_on_channel(struct brcmf_if *ifp)
1055 {
1056 if (!ifp)
1057 return;
1058 brcmf_p2p_set_discover_state(ifp, WL_P2P_DISC_ST_SCAN, 0, 0);
1059 brcmf_p2p_notify_listen_complete(ifp, NULL, NULL);
1060 }
1061
1062
1063 /**
1064 * brcmf_p2p_act_frm_search() - search function for action frame.
1065 *
1066 * @p2p: p2p device.
1067 * channel: channel on which action frame is to be trasmitted.
1068 *
1069 * search function to reach at common channel to send action frame. When
1070 * channel is 0 then all social channels will be used to send af
1071 */
1072 static s32 brcmf_p2p_act_frm_search(struct brcmf_p2p_info *p2p, u16 channel)
1073 {
1074 s32 err;
1075 u32 channel_cnt;
1076 u16 *default_chan_list;
1077 u32 i;
1078
1079 brcmf_dbg(TRACE, "Enter\n");
1080
1081 if (channel)
1082 channel_cnt = AF_PEER_SEARCH_CNT;
1083 else
1084 channel_cnt = SOCIAL_CHAN_CNT;
1085 default_chan_list = kzalloc(channel_cnt * sizeof(*default_chan_list),
1086 GFP_KERNEL);
1087 if (default_chan_list == NULL) {
1088 brcmf_err("channel list allocation failed\n");
1089 err = -ENOMEM;
1090 goto exit;
1091 }
1092 if (channel) {
1093 /* insert same channel to the chan_list */
1094 for (i = 0; i < channel_cnt; i++)
1095 default_chan_list[i] =
1096 brcmf_p2p_chnr_to_chspec(channel);
1097 } else {
1098 default_chan_list[0] = brcmf_p2p_chnr_to_chspec(SOCIAL_CHAN_1);
1099 default_chan_list[1] = brcmf_p2p_chnr_to_chspec(SOCIAL_CHAN_2);
1100 default_chan_list[2] = brcmf_p2p_chnr_to_chspec(SOCIAL_CHAN_3);
1101 }
1102 err = brcmf_p2p_escan(p2p, channel_cnt, default_chan_list,
1103 WL_P2P_DISC_ST_SEARCH, WL_ESCAN_ACTION_START,
1104 P2PAPI_BSSCFG_DEVICE);
1105 kfree(default_chan_list);
1106 exit:
1107 return err;
1108 }
1109
1110
1111 /**
1112 * brcmf_p2p_afx_handler() - afx worker thread.
1113 *
1114 * @work:
1115 *
1116 */
1117 static void brcmf_p2p_afx_handler(struct work_struct *work)
1118 {
1119 struct afx_hdl *afx_hdl = container_of(work, struct afx_hdl, afx_work);
1120 struct brcmf_p2p_info *p2p = container_of(afx_hdl,
1121 struct brcmf_p2p_info,
1122 afx_hdl);
1123 s32 err;
1124
1125 if (!afx_hdl->is_active)
1126 return;
1127
1128 if (afx_hdl->is_listen && afx_hdl->my_listen_chan)
1129 /* 100ms ~ 300ms */
1130 err = brcmf_p2p_discover_listen(p2p, afx_hdl->my_listen_chan,
1131 100 * (1 + (random32() % 3)));
1132 else
1133 err = brcmf_p2p_act_frm_search(p2p, afx_hdl->peer_listen_chan);
1134
1135 if (err) {
1136 brcmf_err("ERROR occurred! value is (%d)\n", err);
1137 if (test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL,
1138 &p2p->status))
1139 complete(&afx_hdl->act_frm_scan);
1140 }
1141 }
1142
1143
1144 /**
1145 * brcmf_p2p_af_searching_channel() - search channel.
1146 *
1147 * @p2p: p2p device info struct.
1148 *
1149 */
1150 static s32 brcmf_p2p_af_searching_channel(struct brcmf_p2p_info *p2p)
1151 {
1152 struct afx_hdl *afx_hdl = &p2p->afx_hdl;
1153 struct brcmf_cfg80211_vif *pri_vif;
1154 unsigned long duration;
1155 s32 retry;
1156
1157 brcmf_dbg(TRACE, "Enter\n");
1158
1159 pri_vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif;
1160
1161 INIT_COMPLETION(afx_hdl->act_frm_scan);
1162 set_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status);
1163 afx_hdl->is_active = true;
1164 afx_hdl->peer_chan = P2P_INVALID_CHANNEL;
1165
1166 /* Loop to wait until we find a peer's channel or the
1167 * pending action frame tx is cancelled.
1168 */
1169 retry = 0;
1170 duration = msecs_to_jiffies(P2P_AF_FRM_SCAN_MAX_WAIT);
1171 while ((retry < P2P_CHANNEL_SYNC_RETRY) &&
1172 (afx_hdl->peer_chan == P2P_INVALID_CHANNEL)) {
1173 afx_hdl->is_listen = false;
1174 brcmf_dbg(TRACE, "Scheduling action frame for sending.. (%d)\n",
1175 retry);
1176 /* search peer on peer's listen channel */
1177 schedule_work(&afx_hdl->afx_work);
1178 wait_for_completion_timeout(&afx_hdl->act_frm_scan, duration);
1179 if ((afx_hdl->peer_chan != P2P_INVALID_CHANNEL) ||
1180 (!test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL,
1181 &p2p->status)))
1182 break;
1183
1184 if (afx_hdl->my_listen_chan) {
1185 brcmf_dbg(TRACE, "Scheduling listen peer, channel=%d\n",
1186 afx_hdl->my_listen_chan);
1187 /* listen on my listen channel */
1188 afx_hdl->is_listen = true;
1189 schedule_work(&afx_hdl->afx_work);
1190 wait_for_completion_timeout(&afx_hdl->act_frm_scan,
1191 duration);
1192 }
1193 if ((afx_hdl->peer_chan != P2P_INVALID_CHANNEL) ||
1194 (!test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL,
1195 &p2p->status)))
1196 break;
1197 retry++;
1198
1199 /* if sta is connected or connecting, sleep for a while before
1200 * retry af tx or finding a peer
1201 */
1202 if (test_bit(BRCMF_VIF_STATUS_CONNECTED, &pri_vif->sme_state) ||
1203 test_bit(BRCMF_VIF_STATUS_CONNECTING, &pri_vif->sme_state))
1204 msleep(P2P_DEFAULT_SLEEP_TIME_VSDB);
1205 }
1206
1207 brcmf_dbg(TRACE, "Completed search/listen peer_chan=%d\n",
1208 afx_hdl->peer_chan);
1209 afx_hdl->is_active = false;
1210
1211 clear_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status);
1212
1213 return afx_hdl->peer_chan;
1214 }
1215
1216
1217 /**
1218 * brcmf_p2p_scan_finding_common_channel() - was escan used for finding channel
1219 *
1220 * @cfg: common configuration struct.
1221 * @bi: bss info struct, result from scan.
1222 *
1223 */
1224 bool brcmf_p2p_scan_finding_common_channel(struct brcmf_cfg80211_info *cfg,
1225 struct brcmf_bss_info_le *bi)
1226
1227 {
1228 struct brcmf_p2p_info *p2p = &cfg->p2p;
1229 struct afx_hdl *afx_hdl = &p2p->afx_hdl;
1230 u8 *ie;
1231 s32 err;
1232 u8 p2p_dev_addr[ETH_ALEN];
1233
1234 if (!test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status))
1235 return false;
1236
1237 if (bi == NULL) {
1238 brcmf_dbg(TRACE, "ACTION FRAME SCAN Done\n");
1239 if (afx_hdl->peer_chan == P2P_INVALID_CHANNEL)
1240 complete(&afx_hdl->act_frm_scan);
1241 return true;
1242 }
1243
1244 ie = ((u8 *)bi) + le16_to_cpu(bi->ie_offset);
1245 memset(p2p_dev_addr, 0, sizeof(p2p_dev_addr));
1246 err = cfg80211_get_p2p_attr(ie, le32_to_cpu(bi->ie_length),
1247 IEEE80211_P2P_ATTR_DEVICE_INFO,
1248 p2p_dev_addr, sizeof(p2p_dev_addr));
1249 if (err < 0)
1250 err = cfg80211_get_p2p_attr(ie, le32_to_cpu(bi->ie_length),
1251 IEEE80211_P2P_ATTR_DEVICE_ID,
1252 p2p_dev_addr, sizeof(p2p_dev_addr));
1253 if ((err >= 0) &&
1254 (!memcmp(p2p_dev_addr, afx_hdl->tx_dst_addr, ETH_ALEN))) {
1255 afx_hdl->peer_chan = bi->ctl_ch ? bi->ctl_ch :
1256 CHSPEC_CHANNEL(le16_to_cpu(bi->chanspec));
1257 brcmf_dbg(TRACE, "ACTION FRAME SCAN : Peer %pM found, channel : %d\n",
1258 afx_hdl->tx_dst_addr, afx_hdl->peer_chan);
1259 complete(&afx_hdl->act_frm_scan);
1260 }
1261 return true;
1262 }
1263
1264 /**
1265 * brcmf_p2p_stop_wait_next_action_frame() - finish scan if af tx complete.
1266 *
1267 * @cfg: common configuration struct.
1268 *
1269 */
1270 static void
1271 brcmf_p2p_stop_wait_next_action_frame(struct brcmf_cfg80211_info *cfg)
1272 {
1273 struct brcmf_p2p_info *p2p = &cfg->p2p;
1274 struct brcmf_if *ifp = cfg->escan_info.ifp;
1275
1276 if (test_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status) &&
1277 (test_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status) ||
1278 test_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status))) {
1279 brcmf_dbg(TRACE, "*** Wake UP ** abort actframe iovar\n");
1280 /* if channel is not zero, "actfame" uses off channel scan.
1281 * So abort scan for off channel completion.
1282 */
1283 if (p2p->af_sent_channel)
1284 brcmf_notify_escan_complete(cfg, ifp, true, true);
1285 } else if (test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN,
1286 &p2p->status)) {
1287 brcmf_dbg(TRACE, "*** Wake UP ** abort listen for next af frame\n");
1288 /* So abort scan to cancel listen */
1289 brcmf_notify_escan_complete(cfg, ifp, true, true);
1290 }
1291 }
1292
1293
1294 /**
1295 * brcmf_p2p_gon_req_collision() - Check if go negotiaton collission
1296 *
1297 * @p2p: p2p device info struct.
1298 *
1299 * return true if recevied action frame is to be dropped.
1300 */
1301 static bool
1302 brcmf_p2p_gon_req_collision(struct brcmf_p2p_info *p2p, u8 *mac)
1303 {
1304 struct brcmf_cfg80211_info *cfg = p2p->cfg;
1305 struct brcmf_if *ifp;
1306
1307 brcmf_dbg(TRACE, "Enter\n");
1308
1309 if (!test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status) ||
1310 !p2p->gon_req_action)
1311 return false;
1312
1313 brcmf_dbg(TRACE, "GO Negotiation Request COLLISION !!!\n");
1314 /* if sa(peer) addr is less than da(my) addr, then this device
1315 * process peer's gon request and block to send gon req.
1316 * if not (sa addr > da addr),
1317 * this device will process gon request and drop gon req of peer.
1318 */
1319 ifp = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif->ifp;
1320 if (memcmp(mac, ifp->mac_addr, ETH_ALEN) < 0) {
1321 brcmf_dbg(INFO, "Block transmit gon req !!!\n");
1322 p2p->block_gon_req_tx = true;
1323 /* if we are finding a common channel for sending af,
1324 * do not scan more to block to send current gon req
1325 */
1326 if (test_and_clear_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL,
1327 &p2p->status))
1328 complete(&p2p->afx_hdl.act_frm_scan);
1329 if (test_and_clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME,
1330 &p2p->status))
1331 brcmf_p2p_stop_wait_next_action_frame(cfg);
1332 return false;
1333 }
1334
1335 /* drop gon request of peer to process gon request by this device. */
1336 brcmf_dbg(INFO, "Drop received gon req !!!\n");
1337
1338 return true;
1339 }
1340
1341
1342 /**
1343 * brcmf_p2p_notify_action_frame_rx() - received action frame.
1344 *
1345 * @ifp: interfac control.
1346 * @e: event message. Not used, to make it usable for fweh event dispatcher.
1347 * @data: payload of message, containing action frame data.
1348 *
1349 */
1350 int brcmf_p2p_notify_action_frame_rx(struct brcmf_if *ifp,
1351 const struct brcmf_event_msg *e,
1352 void *data)
1353 {
1354 struct brcmf_cfg80211_info *cfg = ifp->drvr->config;
1355 struct brcmf_p2p_info *p2p = &cfg->p2p;
1356 struct afx_hdl *afx_hdl = &p2p->afx_hdl;
1357 struct wireless_dev *wdev;
1358 u32 mgmt_frame_len = e->datalen - sizeof(struct brcmf_rx_mgmt_data);
1359 struct brcmf_rx_mgmt_data *rxframe = (struct brcmf_rx_mgmt_data *)data;
1360 u8 *frame = (u8 *)(rxframe + 1);
1361 struct brcmf_p2p_pub_act_frame *act_frm;
1362 struct brcmf_p2psd_gas_pub_act_frame *sd_act_frm;
1363 u16 chanspec = be16_to_cpu(rxframe->chanspec);
1364 struct ieee80211_mgmt *mgmt_frame;
1365 s32 freq;
1366 u16 mgmt_type;
1367 u8 action;
1368
1369 /* Check if wpa_supplicant has registered for this frame */
1370 brcmf_dbg(INFO, "ifp->vif->mgmt_rx_reg %04x\n", ifp->vif->mgmt_rx_reg);
1371 mgmt_type = (IEEE80211_STYPE_ACTION & IEEE80211_FCTL_STYPE) >> 4;
1372 if ((ifp->vif->mgmt_rx_reg & BIT(mgmt_type)) == 0)
1373 return 0;
1374
1375 brcmf_p2p_print_actframe(false, frame, mgmt_frame_len);
1376
1377 action = P2P_PAF_SUBTYPE_INVALID;
1378 if (brcmf_p2p_is_pub_action(frame, mgmt_frame_len)) {
1379 act_frm = (struct brcmf_p2p_pub_act_frame *)frame;
1380 action = act_frm->subtype;
1381 if ((action == P2P_PAF_GON_REQ) &&
1382 (brcmf_p2p_gon_req_collision(p2p, (u8 *)e->addr))) {
1383 if (test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL,
1384 &p2p->status) &&
1385 (memcmp(afx_hdl->tx_dst_addr, e->addr,
1386 ETH_ALEN) == 0)) {
1387 afx_hdl->peer_chan = CHSPEC_CHANNEL(chanspec);
1388 brcmf_dbg(INFO, "GON request: Peer found, channel=%d\n",
1389 afx_hdl->peer_chan);
1390 complete(&afx_hdl->act_frm_scan);
1391 }
1392 return 0;
1393 }
1394 /* After complete GO Negotiation, roll back to mpc mode */
1395 if ((action == P2P_PAF_GON_CONF) ||
1396 (action == P2P_PAF_PROVDIS_RSP))
1397 brcmf_set_mpc(ifp, 1);
1398 if (action == P2P_PAF_GON_CONF) {
1399 brcmf_dbg(TRACE, "P2P: GO_NEG_PHASE status cleared\n");
1400 clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);
1401 }
1402 } else if (brcmf_p2p_is_gas_action(frame, mgmt_frame_len)) {
1403 sd_act_frm = (struct brcmf_p2psd_gas_pub_act_frame *)frame;
1404 action = sd_act_frm->action;
1405 }
1406
1407 if (test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status) &&
1408 (p2p->next_af_subtype == action)) {
1409 brcmf_dbg(TRACE, "We got a right next frame! (%d)\n", action);
1410 clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME,
1411 &p2p->status);
1412 /* Stop waiting for next AF. */
1413 brcmf_p2p_stop_wait_next_action_frame(cfg);
1414 }
1415
1416 mgmt_frame = kzalloc(offsetof(struct ieee80211_mgmt, u) +
1417 mgmt_frame_len, GFP_KERNEL);
1418 if (!mgmt_frame) {
1419 brcmf_err("No memory available for action frame\n");
1420 return -ENOMEM;
1421 }
1422 memcpy(mgmt_frame->da, ifp->mac_addr, ETH_ALEN);
1423 brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_BSSID, mgmt_frame->bssid,
1424 ETH_ALEN);
1425 memcpy(mgmt_frame->sa, e->addr, ETH_ALEN);
1426 mgmt_frame->frame_control = cpu_to_le16(IEEE80211_STYPE_ACTION);
1427 memcpy(&mgmt_frame->u, frame, mgmt_frame_len);
1428 mgmt_frame_len += offsetof(struct ieee80211_mgmt, u);
1429
1430 freq = ieee80211_channel_to_frequency(CHSPEC_CHANNEL(chanspec),
1431 CHSPEC_IS2G(chanspec) ?
1432 IEEE80211_BAND_2GHZ :
1433 IEEE80211_BAND_5GHZ);
1434 wdev = ifp->ndev->ieee80211_ptr;
1435 cfg80211_rx_mgmt(wdev, freq, 0, (u8 *)mgmt_frame, mgmt_frame_len,
1436 GFP_ATOMIC);
1437
1438 kfree(mgmt_frame);
1439 return 0;
1440 }
1441
1442
1443 /**
1444 * brcmf_p2p_notify_action_tx_complete() - transmit action frame complete
1445 *
1446 * @ifp: interfac control.
1447 * @e: event message. Not used, to make it usable for fweh event dispatcher.
1448 * @data: not used.
1449 *
1450 */
1451 int brcmf_p2p_notify_action_tx_complete(struct brcmf_if *ifp,
1452 const struct brcmf_event_msg *e,
1453 void *data)
1454 {
1455 struct brcmf_cfg80211_info *cfg = ifp->drvr->config;
1456 struct brcmf_p2p_info *p2p = &cfg->p2p;
1457
1458 brcmf_dbg(INFO, "Enter: event %s, status=%d\n",
1459 e->event_code == BRCMF_E_ACTION_FRAME_OFF_CHAN_COMPLETE ?
1460 "ACTION_FRAME_OFF_CHAN_COMPLETE" : "ACTION_FRAME_COMPLETE",
1461 e->status);
1462
1463 if (!test_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status))
1464 return 0;
1465
1466 if (e->event_code == BRCMF_E_ACTION_FRAME_COMPLETE) {
1467 if (e->status == BRCMF_E_STATUS_SUCCESS)
1468 set_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED,
1469 &p2p->status);
1470 else {
1471 set_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status);
1472 /* If there is no ack, we don't need to wait for
1473 * WLC_E_ACTION_FRAME_OFFCHAN_COMPLETE event
1474 */
1475 brcmf_p2p_stop_wait_next_action_frame(cfg);
1476 }
1477
1478 } else {
1479 complete(&p2p->send_af_done);
1480 }
1481 return 0;
1482 }
1483
1484
1485 /**
1486 * brcmf_p2p_tx_action_frame() - send action frame over fil.
1487 *
1488 * @p2p: p2p info struct for vif.
1489 * @af_params: action frame data/info.
1490 *
1491 * Send an action frame immediately without doing channel synchronization.
1492 *
1493 * This function waits for a completion event before returning.
1494 * The WLC_E_ACTION_FRAME_COMPLETE event will be received when the action
1495 * frame is transmitted.
1496 */
1497 static s32 brcmf_p2p_tx_action_frame(struct brcmf_p2p_info *p2p,
1498 struct brcmf_fil_af_params_le *af_params)
1499 {
1500 struct brcmf_cfg80211_vif *vif;
1501 s32 err = 0;
1502 s32 timeout = 0;
1503
1504 brcmf_dbg(TRACE, "Enter\n");
1505
1506 INIT_COMPLETION(p2p->send_af_done);
1507 clear_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status);
1508 clear_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status);
1509
1510 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
1511 err = brcmf_fil_bsscfg_data_set(vif->ifp, "actframe", af_params,
1512 sizeof(*af_params));
1513 if (err) {
1514 brcmf_err(" sending action frame has failed\n");
1515 goto exit;
1516 }
1517
1518 p2p->af_sent_channel = le32_to_cpu(af_params->channel);
1519 p2p->af_tx_sent_jiffies = jiffies;
1520
1521 timeout = wait_for_completion_timeout(&p2p->send_af_done,
1522 msecs_to_jiffies(P2P_AF_MAX_WAIT_TIME));
1523
1524 if (test_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status)) {
1525 brcmf_dbg(TRACE, "TX action frame operation is success\n");
1526 } else {
1527 err = -EIO;
1528 brcmf_dbg(TRACE, "TX action frame operation has failed\n");
1529 }
1530 /* clear status bit for action tx */
1531 clear_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status);
1532 clear_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status);
1533
1534 exit:
1535 return err;
1536 }
1537
1538
1539 /**
1540 * brcmf_p2p_pub_af_tx() - public action frame tx routine.
1541 *
1542 * @cfg: driver private data for cfg80211 interface.
1543 * @af_params: action frame data/info.
1544 * @config_af_params: configuration data for action frame.
1545 *
1546 * routine which transmits ation frame public type.
1547 */
1548 static s32 brcmf_p2p_pub_af_tx(struct brcmf_cfg80211_info *cfg,
1549 struct brcmf_fil_af_params_le *af_params,
1550 struct brcmf_config_af_params *config_af_params)
1551 {
1552 struct brcmf_p2p_info *p2p = &cfg->p2p;
1553 struct brcmf_fil_action_frame_le *action_frame;
1554 struct brcmf_p2p_pub_act_frame *act_frm;
1555 s32 err = 0;
1556 u16 ie_len;
1557
1558 action_frame = &af_params->action_frame;
1559 act_frm = (struct brcmf_p2p_pub_act_frame *)(action_frame->data);
1560
1561 config_af_params->extra_listen = true;
1562
1563 switch (act_frm->subtype) {
1564 case P2P_PAF_GON_REQ:
1565 brcmf_dbg(TRACE, "P2P: GO_NEG_PHASE status set\n");
1566 set_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);
1567 config_af_params->mpc_onoff = 0;
1568 config_af_params->search_channel = true;
1569 p2p->next_af_subtype = act_frm->subtype + 1;
1570 p2p->gon_req_action = true;
1571 /* increase dwell time to wait for RESP frame */
1572 af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME);
1573 break;
1574 case P2P_PAF_GON_RSP:
1575 p2p->next_af_subtype = act_frm->subtype + 1;
1576 /* increase dwell time to wait for CONF frame */
1577 af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME);
1578 break;
1579 case P2P_PAF_GON_CONF:
1580 /* If we reached till GO Neg confirmation reset the filter */
1581 brcmf_dbg(TRACE, "P2P: GO_NEG_PHASE status cleared\n");
1582 clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);
1583 /* turn on mpc again if go nego is done */
1584 config_af_params->mpc_onoff = 1;
1585 /* minimize dwell time */
1586 af_params->dwell_time = cpu_to_le32(P2P_AF_MIN_DWELL_TIME);
1587 config_af_params->extra_listen = false;
1588 break;
1589 case P2P_PAF_INVITE_REQ:
1590 config_af_params->search_channel = true;
1591 p2p->next_af_subtype = act_frm->subtype + 1;
1592 /* increase dwell time */
1593 af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME);
1594 break;
1595 case P2P_PAF_INVITE_RSP:
1596 /* minimize dwell time */
1597 af_params->dwell_time = cpu_to_le32(P2P_AF_MIN_DWELL_TIME);
1598 config_af_params->extra_listen = false;
1599 break;
1600 case P2P_PAF_DEVDIS_REQ:
1601 config_af_params->search_channel = true;
1602 p2p->next_af_subtype = act_frm->subtype + 1;
1603 /* maximize dwell time to wait for RESP frame */
1604 af_params->dwell_time = cpu_to_le32(P2P_AF_LONG_DWELL_TIME);
1605 break;
1606 case P2P_PAF_DEVDIS_RSP:
1607 /* minimize dwell time */
1608 af_params->dwell_time = cpu_to_le32(P2P_AF_MIN_DWELL_TIME);
1609 config_af_params->extra_listen = false;
1610 break;
1611 case P2P_PAF_PROVDIS_REQ:
1612 ie_len = le16_to_cpu(action_frame->len) -
1613 offsetof(struct brcmf_p2p_pub_act_frame, elts);
1614 if (cfg80211_get_p2p_attr(&act_frm->elts[0], ie_len,
1615 IEEE80211_P2P_ATTR_GROUP_ID,
1616 NULL, 0) < 0)
1617 config_af_params->search_channel = true;
1618 config_af_params->mpc_onoff = 0;
1619 p2p->next_af_subtype = act_frm->subtype + 1;
1620 /* increase dwell time to wait for RESP frame */
1621 af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME);
1622 break;
1623 case P2P_PAF_PROVDIS_RSP:
1624 /* wpa_supplicant send go nego req right after prov disc */
1625 p2p->next_af_subtype = P2P_PAF_GON_REQ;
1626 /* increase dwell time to MED level */
1627 af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME);
1628 config_af_params->extra_listen = false;
1629 break;
1630 default:
1631 brcmf_err("Unknown p2p pub act frame subtype: %d\n",
1632 act_frm->subtype);
1633 err = -EINVAL;
1634 }
1635 return err;
1636 }
1637
1638 /**
1639 * brcmf_p2p_send_action_frame() - send action frame .
1640 *
1641 * @cfg: driver private data for cfg80211 interface.
1642 * @ndev: net device to transmit on.
1643 * @af_params: configuration data for action frame.
1644 */
1645 bool brcmf_p2p_send_action_frame(struct brcmf_cfg80211_info *cfg,
1646 struct net_device *ndev,
1647 struct brcmf_fil_af_params_le *af_params)
1648 {
1649 struct brcmf_p2p_info *p2p = &cfg->p2p;
1650 struct brcmf_if *ifp = netdev_priv(ndev);
1651 struct brcmf_fil_action_frame_le *action_frame;
1652 struct brcmf_config_af_params config_af_params;
1653 struct afx_hdl *afx_hdl = &p2p->afx_hdl;
1654 u16 action_frame_len;
1655 bool ack = false;
1656 u8 category;
1657 u8 action;
1658 s32 tx_retry;
1659 s32 extra_listen_time;
1660 uint delta_ms;
1661
1662 action_frame = &af_params->action_frame;
1663 action_frame_len = le16_to_cpu(action_frame->len);
1664
1665 brcmf_p2p_print_actframe(true, action_frame->data, action_frame_len);
1666
1667 /* Add the default dwell time. Dwell time to stay off-channel */
1668 /* to wait for a response action frame after transmitting an */
1669 /* GO Negotiation action frame */
1670 af_params->dwell_time = cpu_to_le32(P2P_AF_DWELL_TIME);
1671
1672 category = action_frame->data[DOT11_ACTION_CAT_OFF];
1673 action = action_frame->data[DOT11_ACTION_ACT_OFF];
1674
1675 /* initialize variables */
1676 p2p->next_af_subtype = P2P_PAF_SUBTYPE_INVALID;
1677 p2p->gon_req_action = false;
1678
1679 /* config parameters */
1680 config_af_params.mpc_onoff = -1;
1681 config_af_params.search_channel = false;
1682 config_af_params.extra_listen = false;
1683
1684 if (brcmf_p2p_is_pub_action(action_frame->data, action_frame_len)) {
1685 /* p2p public action frame process */
1686 if (brcmf_p2p_pub_af_tx(cfg, af_params, &config_af_params)) {
1687 /* Just send unknown subtype frame with */
1688 /* default parameters. */
1689 brcmf_err("P2P Public action frame, unknown subtype.\n");
1690 }
1691 } else if (brcmf_p2p_is_gas_action(action_frame->data,
1692 action_frame_len)) {
1693 /* service discovery process */
1694 if (action == P2PSD_ACTION_ID_GAS_IREQ ||
1695 action == P2PSD_ACTION_ID_GAS_CREQ) {
1696 /* configure service discovery query frame */
1697 config_af_params.search_channel = true;
1698
1699 /* save next af suptype to cancel */
1700 /* remaining dwell time */
1701 p2p->next_af_subtype = action + 1;
1702
1703 af_params->dwell_time =
1704 cpu_to_le32(P2P_AF_MED_DWELL_TIME);
1705 } else if (action == P2PSD_ACTION_ID_GAS_IRESP ||
1706 action == P2PSD_ACTION_ID_GAS_CRESP) {
1707 /* configure service discovery response frame */
1708 af_params->dwell_time =
1709 cpu_to_le32(P2P_AF_MIN_DWELL_TIME);
1710 } else {
1711 brcmf_err("Unknown action type: %d\n", action);
1712 goto exit;
1713 }
1714 } else if (brcmf_p2p_is_p2p_action(action_frame->data,
1715 action_frame_len)) {
1716 /* do not configure anything. it will be */
1717 /* sent with a default configuration */
1718 } else {
1719 brcmf_err("Unknown Frame: category 0x%x, action 0x%x\n",
1720 category, action);
1721 return false;
1722 }
1723
1724 /* if connecting on primary iface, sleep for a while before sending
1725 * af tx for VSDB
1726 */
1727 if (test_bit(BRCMF_VIF_STATUS_CONNECTING,
1728 &p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->sme_state))
1729 msleep(50);
1730
1731 /* if scan is ongoing, abort current scan. */
1732 if (test_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status))
1733 brcmf_abort_scanning(cfg);
1734
1735 memcpy(afx_hdl->tx_dst_addr, action_frame->da, ETH_ALEN);
1736
1737 /* To make sure to send successfully action frame, turn off mpc */
1738 if (config_af_params.mpc_onoff == 0)
1739 brcmf_set_mpc(ifp, 0);
1740
1741 /* set status and destination address before sending af */
1742 if (p2p->next_af_subtype != P2P_PAF_SUBTYPE_INVALID) {
1743 /* set status to cancel the remained dwell time in rx process */
1744 set_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status);
1745 }
1746
1747 p2p->af_sent_channel = 0;
1748 set_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status);
1749 /* validate channel and p2p ies */
1750 if (config_af_params.search_channel &&
1751 IS_P2P_SOCIAL_CHANNEL(le32_to_cpu(af_params->channel)) &&
1752 p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif->saved_ie.probe_req_ie_len) {
1753 afx_hdl = &p2p->afx_hdl;
1754 afx_hdl->peer_listen_chan = le32_to_cpu(af_params->channel);
1755
1756 if (brcmf_p2p_af_searching_channel(p2p) ==
1757 P2P_INVALID_CHANNEL) {
1758 brcmf_err("Couldn't find peer's channel.\n");
1759 goto exit;
1760 }
1761
1762 /* Abort scan even for VSDB scenarios. Scan gets aborted in
1763 * firmware but after the check of piggyback algorithm. To take
1764 * care of current piggback algo, lets abort the scan here
1765 * itself.
1766 */
1767 brcmf_notify_escan_complete(cfg, ifp, true, true);
1768
1769 /* update channel */
1770 af_params->channel = cpu_to_le32(afx_hdl->peer_chan);
1771 }
1772
1773 tx_retry = 0;
1774 while (!p2p->block_gon_req_tx &&
1775 (ack == false) && (tx_retry < P2P_AF_TX_MAX_RETRY)) {
1776 ack = !brcmf_p2p_tx_action_frame(p2p, af_params);
1777 tx_retry++;
1778 }
1779 if (ack == false) {
1780 brcmf_err("Failed to send Action Frame(retry %d)\n", tx_retry);
1781 clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);
1782 }
1783
1784 exit:
1785 clear_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status);
1786
1787 /* WAR: sometimes dongle does not keep the dwell time of 'actframe'.
1788 * if we coundn't get the next action response frame and dongle does
1789 * not keep the dwell time, go to listen state again to get next action
1790 * response frame.
1791 */
1792 if (ack && config_af_params.extra_listen && !p2p->block_gon_req_tx &&
1793 test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status) &&
1794 p2p->af_sent_channel == afx_hdl->my_listen_chan) {
1795 delta_ms = jiffies_to_msecs(jiffies - p2p->af_tx_sent_jiffies);
1796 if (le32_to_cpu(af_params->dwell_time) > delta_ms)
1797 extra_listen_time = le32_to_cpu(af_params->dwell_time) -
1798 delta_ms;
1799 else
1800 extra_listen_time = 0;
1801 if (extra_listen_time > 50) {
1802 set_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN,
1803 &p2p->status);
1804 brcmf_dbg(INFO, "Wait more time! actual af time:%d, calculated extra listen:%d\n",
1805 le32_to_cpu(af_params->dwell_time),
1806 extra_listen_time);
1807 extra_listen_time += 100;
1808 if (!brcmf_p2p_discover_listen(p2p,
1809 p2p->af_sent_channel,
1810 extra_listen_time)) {
1811 unsigned long duration;
1812
1813 extra_listen_time += 100;
1814 duration = msecs_to_jiffies(extra_listen_time);
1815 wait_for_completion_timeout(&p2p->wait_next_af,
1816 duration);
1817 }
1818 clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN,
1819 &p2p->status);
1820 }
1821 }
1822
1823 if (p2p->block_gon_req_tx) {
1824 /* if ack is true, supplicant will wait more time(100ms).
1825 * so we will return it as a success to get more time .
1826 */
1827 p2p->block_gon_req_tx = false;
1828 ack = true;
1829 }
1830
1831 clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status);
1832 /* if all done, turn mpc on again */
1833 if (config_af_params.mpc_onoff == 1)
1834 brcmf_set_mpc(ifp, 1);
1835
1836 return ack;
1837 }
1838
1839 /**
1840 * brcmf_p2p_notify_rx_mgmt_p2p_probereq() - Event handler for p2p probe req.
1841 *
1842 * @ifp: interface pointer for which event was received.
1843 * @e: even message.
1844 * @data: payload of event message (probe request).
1845 */
1846 s32 brcmf_p2p_notify_rx_mgmt_p2p_probereq(struct brcmf_if *ifp,
1847 const struct brcmf_event_msg *e,
1848 void *data)
1849 {
1850 struct brcmf_cfg80211_info *cfg = ifp->drvr->config;
1851 struct brcmf_p2p_info *p2p = &cfg->p2p;
1852 struct afx_hdl *afx_hdl = &p2p->afx_hdl;
1853 struct brcmf_cfg80211_vif *vif = ifp->vif;
1854 struct brcmf_rx_mgmt_data *rxframe = (struct brcmf_rx_mgmt_data *)data;
1855 u16 chanspec = be16_to_cpu(rxframe->chanspec);
1856 u8 *mgmt_frame;
1857 u32 mgmt_frame_len;
1858 s32 freq;
1859 u16 mgmt_type;
1860
1861 brcmf_dbg(INFO, "Enter: event %d reason %d\n", e->event_code,
1862 e->reason);
1863
1864 if (test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status) &&
1865 (memcmp(afx_hdl->tx_dst_addr, e->addr, ETH_ALEN) == 0)) {
1866 afx_hdl->peer_chan = CHSPEC_CHANNEL(chanspec);
1867 brcmf_dbg(INFO, "PROBE REQUEST: Peer found, channel=%d\n",
1868 afx_hdl->peer_chan);
1869 complete(&afx_hdl->act_frm_scan);
1870 }
1871
1872 /* Firmware sends us two proberesponses for each idx one. At the */
1873 /* moment anything but bsscfgidx 0 is passed up to supplicant */
1874 if (e->bsscfgidx == 0)
1875 return 0;
1876
1877 /* Filter any P2P probe reqs arriving during the GO-NEG Phase */
1878 if (test_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status)) {
1879 brcmf_dbg(INFO, "Filtering P2P probe_req in GO-NEG phase\n");
1880 return 0;
1881 }
1882
1883 /* Check if wpa_supplicant has registered for this frame */
1884 brcmf_dbg(INFO, "vif->mgmt_rx_reg %04x\n", vif->mgmt_rx_reg);
1885 mgmt_type = (IEEE80211_STYPE_PROBE_REQ & IEEE80211_FCTL_STYPE) >> 4;
1886 if ((vif->mgmt_rx_reg & BIT(mgmt_type)) == 0)
1887 return 0;
1888
1889 mgmt_frame = (u8 *)(rxframe + 1);
1890 mgmt_frame_len = e->datalen - sizeof(*rxframe);
1891 freq = ieee80211_channel_to_frequency(CHSPEC_CHANNEL(chanspec),
1892 CHSPEC_IS2G(chanspec) ?
1893 IEEE80211_BAND_2GHZ :
1894 IEEE80211_BAND_5GHZ);
1895
1896 cfg80211_rx_mgmt(&vif->wdev, freq, 0, mgmt_frame, mgmt_frame_len,
1897 GFP_ATOMIC);
1898
1899 brcmf_dbg(INFO, "mgmt_frame_len (%d) , e->datalen (%d), chanspec (%04x), freq (%d)\n",
1900 mgmt_frame_len, e->datalen, chanspec, freq);
1901
1902 return 0;
1903 }
1904
1905
1906 /**
1907 * brcmf_p2p_attach() - attach for P2P.
1908 *
1909 * @cfg: driver private data for cfg80211 interface.
1910 */
1911 s32 brcmf_p2p_attach(struct brcmf_cfg80211_info *cfg)
1912 {
1913 struct brcmf_if *pri_ifp;
1914 struct brcmf_if *p2p_ifp;
1915 struct brcmf_cfg80211_vif *p2p_vif;
1916 struct brcmf_p2p_info *p2p;
1917 struct brcmf_pub *drvr;
1918 s32 bssidx;
1919 s32 err = 0;
1920
1921 p2p = &cfg->p2p;
1922 p2p->cfg = cfg;
1923
1924 drvr = cfg->pub;
1925
1926 pri_ifp = drvr->iflist[0];
1927 p2p_ifp = drvr->iflist[1];
1928
1929 p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif = pri_ifp->vif;
1930
1931 if (p2p_ifp) {
1932 p2p_vif = brcmf_alloc_vif(cfg, NL80211_IFTYPE_P2P_DEVICE,
1933 false);
1934 if (IS_ERR(p2p_vif)) {
1935 brcmf_err("could not create discovery vif\n");
1936 err = -ENOMEM;
1937 goto exit;
1938 }
1939
1940 p2p_vif->ifp = p2p_ifp;
1941 p2p_ifp->vif = p2p_vif;
1942 p2p_vif->wdev.netdev = p2p_ifp->ndev;
1943 p2p_ifp->ndev->ieee80211_ptr = &p2p_vif->wdev;
1944 SET_NETDEV_DEV(p2p_ifp->ndev, wiphy_dev(cfg->wiphy));
1945
1946 p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif = p2p_vif;
1947
1948 brcmf_p2p_generate_bss_mac(p2p, NULL);
1949 memcpy(p2p_ifp->mac_addr, p2p->dev_addr, ETH_ALEN);
1950 brcmf_p2p_set_firmware(pri_ifp, p2p->dev_addr);
1951
1952 /* Initialize P2P Discovery in the firmware */
1953 err = brcmf_fil_iovar_int_set(pri_ifp, "p2p_disc", 1);
1954 if (err < 0) {
1955 brcmf_err("set p2p_disc error\n");
1956 brcmf_free_vif(p2p_vif);
1957 goto exit;
1958 }
1959 /* obtain bsscfg index for P2P discovery */
1960 err = brcmf_fil_iovar_int_get(pri_ifp, "p2p_dev", &bssidx);
1961 if (err < 0) {
1962 brcmf_err("retrieving discover bsscfg index failed\n");
1963 brcmf_free_vif(p2p_vif);
1964 goto exit;
1965 }
1966 /* Verify that firmware uses same bssidx as driver !! */
1967 if (p2p_ifp->bssidx != bssidx) {
1968 brcmf_err("Incorrect bssidx=%d, compared to p2p_ifp->bssidx=%d\n",
1969 bssidx, p2p_ifp->bssidx);
1970 brcmf_free_vif(p2p_vif);
1971 goto exit;
1972 }
1973
1974 init_completion(&p2p->send_af_done);
1975 INIT_WORK(&p2p->afx_hdl.afx_work, brcmf_p2p_afx_handler);
1976 init_completion(&p2p->afx_hdl.act_frm_scan);
1977 init_completion(&p2p->wait_next_af);
1978 }
1979 exit:
1980 return err;
1981 }
1982
1983
1984 /**
1985 * brcmf_p2p_detach() - detach P2P.
1986 *
1987 * @p2p: P2P specific data.
1988 */
1989 void brcmf_p2p_detach(struct brcmf_p2p_info *p2p)
1990 {
1991 struct brcmf_cfg80211_vif *vif;
1992
1993 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
1994 if (vif != NULL) {
1995 brcmf_p2p_cancel_remain_on_channel(vif->ifp);
1996 brcmf_p2p_deinit_discovery(p2p);
1997 /* remove discovery interface */
1998 brcmf_free_vif(vif);
1999 p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif = NULL;
2000 }
2001 /* just set it all to zero */
2002 memset(p2p, 0, sizeof(*p2p));
2003 }
2004
2005 /**
2006 * brcmf_p2p_get_current_chanspec() - Get current operation channel.
2007 *
2008 * @p2p: P2P specific data.
2009 * @chanspec: chanspec to be returned.
2010 */
2011 static void brcmf_p2p_get_current_chanspec(struct brcmf_p2p_info *p2p,
2012 u16 *chanspec)
2013 {
2014 struct brcmf_if *ifp;
2015 struct brcmf_fil_chan_info_le ci;
2016 s32 err;
2017
2018 ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp;
2019
2020 *chanspec = 11 & WL_CHANSPEC_CHAN_MASK;
2021
2022 err = brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_CHANNEL, &ci, sizeof(ci));
2023 if (!err) {
2024 *chanspec = le32_to_cpu(ci.hw_channel) & WL_CHANSPEC_CHAN_MASK;
2025 if (*chanspec < CH_MAX_2G_CHANNEL)
2026 *chanspec |= WL_CHANSPEC_BAND_2G;
2027 else
2028 *chanspec |= WL_CHANSPEC_BAND_5G;
2029 }
2030 *chanspec |= WL_CHANSPEC_BW_20 | WL_CHANSPEC_CTL_SB_NONE;
2031 }
2032
2033 /**
2034 * Change a P2P Role.
2035 * Parameters:
2036 * @mac: MAC address of the BSS to change a role
2037 * Returns 0 if success.
2038 */
2039 int brcmf_p2p_ifchange(struct brcmf_cfg80211_info *cfg,
2040 enum brcmf_fil_p2p_if_types if_type)
2041 {
2042 struct brcmf_p2p_info *p2p = &cfg->p2p;
2043 struct brcmf_cfg80211_vif *vif;
2044 struct brcmf_fil_p2p_if_le if_request;
2045 s32 err;
2046 u16 chanspec;
2047
2048 brcmf_dbg(TRACE, "Enter\n");
2049
2050 vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif;
2051 if (!vif) {
2052 brcmf_err("vif for P2PAPI_BSSCFG_PRIMARY does not exist\n");
2053 return -EPERM;
2054 }
2055 brcmf_notify_escan_complete(cfg, vif->ifp, true, true);
2056 vif = p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif;
2057 if (!vif) {
2058 brcmf_err("vif for P2PAPI_BSSCFG_CONNECTION does not exist\n");
2059 return -EPERM;
2060 }
2061 brcmf_set_mpc(vif->ifp, 0);
2062
2063 /* In concurrency case, STA may be already associated in a particular */
2064 /* channel. so retrieve the current channel of primary interface and */
2065 /* then start the virtual interface on that. */
2066 brcmf_p2p_get_current_chanspec(p2p, &chanspec);
2067
2068 if_request.type = cpu_to_le16((u16)if_type);
2069 if_request.chspec = cpu_to_le16(chanspec);
2070 memcpy(if_request.addr, p2p->int_addr, sizeof(if_request.addr));
2071
2072 brcmf_cfg80211_arm_vif_event(cfg, vif);
2073 err = brcmf_fil_iovar_data_set(vif->ifp, "p2p_ifupd", &if_request,
2074 sizeof(if_request));
2075 if (err) {
2076 brcmf_err("p2p_ifupd FAILED, err=%d\n", err);
2077 brcmf_cfg80211_arm_vif_event(cfg, NULL);
2078 return err;
2079 }
2080 err = brcmf_cfg80211_wait_vif_event_timeout(cfg, BRCMF_E_IF_CHANGE,
2081 msecs_to_jiffies(1500));
2082 brcmf_cfg80211_arm_vif_event(cfg, NULL);
2083 if (!err) {
2084 brcmf_err("No BRCMF_E_IF_CHANGE event received\n");
2085 return -EIO;
2086 }
2087
2088 err = brcmf_fil_cmd_int_set(vif->ifp, BRCMF_C_SET_SCB_TIMEOUT,
2089 BRCMF_SCB_TIMEOUT_VALUE);
2090
2091 return err;
2092 }
2093
2094 static int brcmf_p2p_request_p2p_if(struct brcmf_p2p_info *p2p,
2095 struct brcmf_if *ifp, u8 ea[ETH_ALEN],
2096 enum brcmf_fil_p2p_if_types iftype)
2097 {
2098 struct brcmf_fil_p2p_if_le if_request;
2099 int err;
2100 u16 chanspec;
2101
2102 /* we need a default channel */
2103 brcmf_p2p_get_current_chanspec(p2p, &chanspec);
2104
2105 /* fill the firmware request */
2106 memcpy(if_request.addr, ea, ETH_ALEN);
2107 if_request.type = cpu_to_le16((u16)iftype);
2108 if_request.chspec = cpu_to_le16(chanspec);
2109
2110 err = brcmf_fil_iovar_data_set(ifp, "p2p_ifadd", &if_request,
2111 sizeof(if_request));
2112 if (err)
2113 return err;
2114
2115 return err;
2116 }
2117
2118 static int brcmf_p2p_disable_p2p_if(struct brcmf_cfg80211_vif *vif)
2119 {
2120 struct brcmf_cfg80211_info *cfg = wdev_to_cfg(&vif->wdev);
2121 struct net_device *pri_ndev = cfg_to_ndev(cfg);
2122 struct brcmf_if *ifp = netdev_priv(pri_ndev);
2123 u8 *addr = vif->wdev.netdev->dev_addr;
2124
2125 return brcmf_fil_iovar_data_set(ifp, "p2p_ifdis", addr, ETH_ALEN);
2126 }
2127
2128 static int brcmf_p2p_release_p2p_if(struct brcmf_cfg80211_vif *vif)
2129 {
2130 struct brcmf_cfg80211_info *cfg = wdev_to_cfg(&vif->wdev);
2131 struct net_device *pri_ndev = cfg_to_ndev(cfg);
2132 struct brcmf_if *ifp = netdev_priv(pri_ndev);
2133 u8 *addr = vif->wdev.netdev->dev_addr;
2134
2135 return brcmf_fil_iovar_data_set(ifp, "p2p_ifdel", addr, ETH_ALEN);
2136 }
2137
2138 /**
2139 * brcmf_p2p_create_p2pdev() - create a P2P_DEVICE virtual interface.
2140 *
2141 * @p2p: P2P specific data.
2142 * @wiphy: wiphy device of new interface.
2143 * @addr: mac address for this new interface.
2144 */
2145 static struct wireless_dev *brcmf_p2p_create_p2pdev(struct brcmf_p2p_info *p2p,
2146 struct wiphy *wiphy,
2147 u8 *addr)
2148 {
2149 struct brcmf_cfg80211_vif *p2p_vif;
2150 struct brcmf_if *p2p_ifp;
2151 struct brcmf_if *pri_ifp;
2152 int err;
2153 u32 bssidx;
2154
2155 if (p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif)
2156 return ERR_PTR(-ENOSPC);
2157
2158 p2p_vif = brcmf_alloc_vif(p2p->cfg, NL80211_IFTYPE_P2P_DEVICE,
2159 false);
2160 if (IS_ERR(p2p_vif)) {
2161 brcmf_err("could not create discovery vif\n");
2162 return (struct wireless_dev *)p2p_vif;
2163 }
2164
2165 pri_ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp;
2166 brcmf_p2p_generate_bss_mac(p2p, addr);
2167 brcmf_p2p_set_firmware(pri_ifp, p2p->dev_addr);
2168
2169 brcmf_cfg80211_arm_vif_event(p2p->cfg, p2p_vif);
2170
2171 /* Initialize P2P Discovery in the firmware */
2172 err = brcmf_fil_iovar_int_set(pri_ifp, "p2p_disc", 1);
2173 if (err < 0) {
2174 brcmf_err("set p2p_disc error\n");
2175 brcmf_cfg80211_arm_vif_event(p2p->cfg, NULL);
2176 goto fail;
2177 }
2178
2179 /* wait for firmware event */
2180 err = brcmf_cfg80211_wait_vif_event_timeout(p2p->cfg, BRCMF_E_IF_ADD,
2181 msecs_to_jiffies(1500));
2182 brcmf_cfg80211_arm_vif_event(p2p->cfg, NULL);
2183 if (!err) {
2184 brcmf_err("timeout occurred\n");
2185 err = -EIO;
2186 goto fail;
2187 }
2188
2189 /* discovery interface created */
2190 p2p_ifp = p2p_vif->ifp;
2191 p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif = p2p_vif;
2192 memcpy(p2p_ifp->mac_addr, p2p->dev_addr, ETH_ALEN);
2193 memcpy(&p2p_vif->wdev.address, p2p->dev_addr, sizeof(p2p->dev_addr));
2194
2195 /* verify bsscfg index for P2P discovery */
2196 err = brcmf_fil_iovar_int_get(pri_ifp, "p2p_dev", &bssidx);
2197 if (err < 0) {
2198 brcmf_err("retrieving discover bsscfg index failed\n");
2199 goto fail;
2200 }
2201
2202 WARN_ON(p2p_ifp->bssidx != bssidx);
2203
2204 init_completion(&p2p->send_af_done);
2205 INIT_WORK(&p2p->afx_hdl.afx_work, brcmf_p2p_afx_handler);
2206 init_completion(&p2p->afx_hdl.act_frm_scan);
2207 init_completion(&p2p->wait_next_af);
2208
2209 return &p2p_vif->wdev;
2210
2211 fail:
2212 brcmf_free_vif(p2p_vif);
2213 return ERR_PTR(err);
2214 }
2215
2216 /**
2217 * brcmf_p2p_delete_p2pdev() - delete P2P_DEVICE virtual interface.
2218 *
2219 * @vif: virtual interface object to delete.
2220 */
2221 static void brcmf_p2p_delete_p2pdev(struct brcmf_cfg80211_vif *vif)
2222 {
2223 struct brcmf_p2p_info *p2p = &vif->ifp->drvr->config->p2p;
2224
2225 cfg80211_unregister_wdev(&vif->wdev);
2226 p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif = NULL;
2227 brcmf_free_vif(vif);
2228 }
2229
2230 /**
2231 * brcmf_p2p_add_vif() - create a new P2P virtual interface.
2232 *
2233 * @wiphy: wiphy device of new interface.
2234 * @name: name of the new interface.
2235 * @type: nl80211 interface type.
2236 * @flags: not used.
2237 * @params: contains mac address for P2P device.
2238 */
2239 struct wireless_dev *brcmf_p2p_add_vif(struct wiphy *wiphy, const char *name,
2240 enum nl80211_iftype type, u32 *flags,
2241 struct vif_params *params)
2242 {
2243 struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
2244 struct brcmf_if *ifp = netdev_priv(cfg_to_ndev(cfg));
2245 struct brcmf_cfg80211_vif *vif;
2246 enum brcmf_fil_p2p_if_types iftype;
2247 enum wl_mode mode;
2248 int err;
2249
2250 if (brcmf_cfg80211_vif_event_armed(cfg))
2251 return ERR_PTR(-EBUSY);
2252
2253 brcmf_dbg(INFO, "adding vif \"%s\" (type=%d)\n", name, type);
2254
2255 switch (type) {
2256 case NL80211_IFTYPE_P2P_CLIENT:
2257 iftype = BRCMF_FIL_P2P_IF_CLIENT;
2258 mode = WL_MODE_BSS;
2259 break;
2260 case NL80211_IFTYPE_P2P_GO:
2261 iftype = BRCMF_FIL_P2P_IF_GO;
2262 mode = WL_MODE_AP;
2263 break;
2264 case NL80211_IFTYPE_P2P_DEVICE:
2265 return brcmf_p2p_create_p2pdev(&cfg->p2p, wiphy,
2266 params->macaddr);
2267 default:
2268 return ERR_PTR(-EOPNOTSUPP);
2269 }
2270
2271 vif = brcmf_alloc_vif(cfg, type, false);
2272 if (IS_ERR(vif))
2273 return (struct wireless_dev *)vif;
2274 brcmf_cfg80211_arm_vif_event(cfg, vif);
2275
2276 err = brcmf_p2p_request_p2p_if(&cfg->p2p, ifp, cfg->p2p.int_addr,
2277 iftype);
2278 if (err) {
2279 brcmf_cfg80211_arm_vif_event(cfg, NULL);
2280 goto fail;
2281 }
2282
2283 /* wait for firmware event */
2284 err = brcmf_cfg80211_wait_vif_event_timeout(cfg, BRCMF_E_IF_ADD,
2285 msecs_to_jiffies(1500));
2286 brcmf_cfg80211_arm_vif_event(cfg, NULL);
2287 if (!err) {
2288 brcmf_err("timeout occurred\n");
2289 err = -EIO;
2290 goto fail;
2291 }
2292
2293 /* interface created in firmware */
2294 ifp = vif->ifp;
2295 if (!ifp) {
2296 brcmf_err("no if pointer provided\n");
2297 err = -ENOENT;
2298 goto fail;
2299 }
2300
2301 strncpy(ifp->ndev->name, name, sizeof(ifp->ndev->name) - 1);
2302 err = brcmf_net_attach(ifp, true);
2303 if (err) {
2304 brcmf_err("Registering netdevice failed\n");
2305 goto fail;
2306 }
2307 cfg->p2p.bss_idx[P2PAPI_BSSCFG_CONNECTION].vif = vif;
2308 /* Disable firmware roaming for P2P interface */
2309 brcmf_fil_iovar_int_set(ifp, "roam_off", 1);
2310 if (iftype == BRCMF_FIL_P2P_IF_GO) {
2311 /* set station timeout for p2p */
2312 brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCB_TIMEOUT,
2313 BRCMF_SCB_TIMEOUT_VALUE);
2314 }
2315 return &ifp->vif->wdev;
2316
2317 fail:
2318 brcmf_free_vif(vif);
2319 return ERR_PTR(err);
2320 }
2321
2322 /**
2323 * brcmf_p2p_del_vif() - delete a P2P virtual interface.
2324 *
2325 * @wiphy: wiphy device of interface.
2326 * @wdev: wireless device of interface.
2327 *
2328 * TODO: not yet supported.
2329 */
2330 int brcmf_p2p_del_vif(struct wiphy *wiphy, struct wireless_dev *wdev)
2331 {
2332 struct brcmf_cfg80211_info *cfg = wiphy_priv(wiphy);
2333 struct brcmf_p2p_info *p2p = &cfg->p2p;
2334 struct brcmf_cfg80211_vif *vif;
2335 unsigned long jiffie_timeout = msecs_to_jiffies(1500);
2336 bool wait_for_disable = false;
2337 int err;
2338
2339 brcmf_dbg(TRACE, "delete P2P vif\n");
2340 vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev);
2341
2342 switch (vif->wdev.iftype) {
2343 case NL80211_IFTYPE_P2P_CLIENT:
2344 if (test_bit(BRCMF_VIF_STATUS_DISCONNECTING, &vif->sme_state))
2345 wait_for_disable = true;
2346 break;
2347
2348 case NL80211_IFTYPE_P2P_GO:
2349 if (!brcmf_p2p_disable_p2p_if(vif))
2350 wait_for_disable = true;
2351 break;
2352
2353 case NL80211_IFTYPE_P2P_DEVICE:
2354 brcmf_p2p_delete_p2pdev(vif);
2355 return 0;
2356 default:
2357 return -ENOTSUPP;
2358 break;
2359 }
2360
2361 clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);
2362 brcmf_dbg(INFO, "P2P: GO_NEG_PHASE status cleared\n");
2363
2364 if (wait_for_disable)
2365 wait_for_completion_timeout(&cfg->vif_disabled,
2366 msecs_to_jiffies(500));
2367
2368 brcmf_vif_clear_mgmt_ies(vif);
2369
2370 brcmf_cfg80211_arm_vif_event(cfg, vif);
2371 err = brcmf_p2p_release_p2p_if(vif);
2372 if (!err) {
2373 /* wait for firmware event */
2374 err = brcmf_cfg80211_wait_vif_event_timeout(cfg, BRCMF_E_IF_DEL,
2375 jiffie_timeout);
2376 if (!err)
2377 err = -EIO;
2378 else
2379 err = 0;
2380 }
2381 brcmf_cfg80211_arm_vif_event(cfg, NULL);
2382 brcmf_free_vif(vif);
2383 p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif = NULL;
2384
2385 return err;
2386 }
2387
2388 int brcmf_p2p_start_device(struct wiphy *wiphy, struct wireless_dev *wdev)
2389 {
2390 struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
2391 struct brcmf_p2p_info *p2p = &cfg->p2p;
2392 struct brcmf_cfg80211_vif *vif;
2393 int err;
2394
2395 vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev);
2396 mutex_lock(&cfg->usr_sync);
2397 err = brcmf_p2p_enable_discovery(p2p);
2398 if (!err)
2399 set_bit(BRCMF_VIF_STATUS_READY, &vif->sme_state);
2400 mutex_unlock(&cfg->usr_sync);
2401 return err;
2402 }
2403
2404 void brcmf_p2p_stop_device(struct wiphy *wiphy, struct wireless_dev *wdev)
2405 {
2406 struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
2407 struct brcmf_p2p_info *p2p = &cfg->p2p;
2408 struct brcmf_cfg80211_vif *vif;
2409
2410 vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev);
2411 mutex_lock(&cfg->usr_sync);
2412 (void)brcmf_p2p_deinit_discovery(p2p);
2413 brcmf_abort_scanning(cfg);
2414 clear_bit(BRCMF_VIF_STATUS_READY, &vif->sme_state);
2415 mutex_unlock(&cfg->usr_sync);
2416 }
Linux kernel - Deliverables
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