2 * Copyright (c) 2012 Broadcom Corporation
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.
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.
16 #include <linux/slab.h>
17 #include <linux/netdevice.h>
18 #include <linux/etherdevice.h>
19 #include <net/cfg80211.h>
21 #include <brcmu_wifi.h>
22 #include <brcmu_utils.h>
27 #include "fwil_types.h"
29 #include "wl_cfg80211.h"
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
41 #define BRCMF_P2P_WILDCARD_SSID "DIRECT-"
42 #define BRCMF_P2P_WILDCARD_SSID_LEN (sizeof(BRCMF_P2P_WILDCARD_SSID) - 1)
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 BRCMF_P2P_TEMP_CHAN SOCIAL_CHAN_3
51 #define SOCIAL_CHAN_CNT 3
52 #define AF_PEER_SEARCH_CNT 2
54 #define BRCMF_SCB_TIMEOUT_VALUE 20
56 #define P2P_VER 9 /* P2P version: 9=WiFi P2P v1.0 */
57 #define P2P_PUB_AF_CATEGORY 0x04
58 #define P2P_PUB_AF_ACTION 0x09
59 #define P2P_AF_CATEGORY 0x7f
60 #define P2P_OUI "\x50\x6F\x9A" /* P2P OUI */
61 #define P2P_OUI_LEN 3 /* P2P OUI length */
63 /* Action Frame Constants */
64 #define DOT11_ACTION_HDR_LEN 2 /* action frame category + action */
65 #define DOT11_ACTION_CAT_OFF 0 /* category offset */
66 #define DOT11_ACTION_ACT_OFF 1 /* action offset */
68 #define P2P_AF_DWELL_TIME 200
69 #define P2P_AF_MIN_DWELL_TIME 100
70 #define P2P_AF_MED_DWELL_TIME 400
71 #define P2P_AF_LONG_DWELL_TIME 1000
72 #define P2P_AF_TX_MAX_RETRY 1
73 #define P2P_AF_MAX_WAIT_TIME 2000
74 #define P2P_INVALID_CHANNEL -1
75 #define P2P_CHANNEL_SYNC_RETRY 5
76 #define P2P_AF_FRM_SCAN_MAX_WAIT 1500
77 #define P2P_DEFAULT_SLEEP_TIME_VSDB 200
79 /* WiFi P2P Public Action Frame OUI Subtypes */
80 #define P2P_PAF_GON_REQ 0 /* Group Owner Negotiation Req */
81 #define P2P_PAF_GON_RSP 1 /* Group Owner Negotiation Rsp */
82 #define P2P_PAF_GON_CONF 2 /* Group Owner Negotiation Confirm */
83 #define P2P_PAF_INVITE_REQ 3 /* P2P Invitation Request */
84 #define P2P_PAF_INVITE_RSP 4 /* P2P Invitation Response */
85 #define P2P_PAF_DEVDIS_REQ 5 /* Device Discoverability Request */
86 #define P2P_PAF_DEVDIS_RSP 6 /* Device Discoverability Response */
87 #define P2P_PAF_PROVDIS_REQ 7 /* Provision Discovery Request */
88 #define P2P_PAF_PROVDIS_RSP 8 /* Provision Discovery Response */
89 #define P2P_PAF_SUBTYPE_INVALID 255 /* Invalid Subtype */
91 /* WiFi P2P Action Frame OUI Subtypes */
92 #define P2P_AF_NOTICE_OF_ABSENCE 0 /* Notice of Absence */
93 #define P2P_AF_PRESENCE_REQ 1 /* P2P Presence Request */
94 #define P2P_AF_PRESENCE_RSP 2 /* P2P Presence Response */
95 #define P2P_AF_GO_DISC_REQ 3 /* GO Discoverability Request */
97 /* P2P Service Discovery related */
98 #define P2PSD_ACTION_CATEGORY 0x04 /* Public action frame */
99 #define P2PSD_ACTION_ID_GAS_IREQ 0x0a /* GAS Initial Request AF */
100 #define P2PSD_ACTION_ID_GAS_IRESP 0x0b /* GAS Initial Response AF */
101 #define P2PSD_ACTION_ID_GAS_CREQ 0x0c /* GAS Comback Request AF */
102 #define P2PSD_ACTION_ID_GAS_CRESP 0x0d /* GAS Comback Response AF */
105 * struct brcmf_p2p_disc_st_le - set discovery state in firmware.
107 * @state: requested discovery state (see enum brcmf_p2p_disc_state).
108 * @chspec: channel parameter for %WL_P2P_DISC_ST_LISTEN state.
109 * @dwell: dwell time in ms for %WL_P2P_DISC_ST_LISTEN state.
111 struct brcmf_p2p_disc_st_le {
118 * enum brcmf_p2p_disc_state - P2P discovery state values
120 * @WL_P2P_DISC_ST_SCAN: P2P discovery with wildcard SSID and P2P IE.
121 * @WL_P2P_DISC_ST_LISTEN: P2P discovery off-channel for specified time.
122 * @WL_P2P_DISC_ST_SEARCH: P2P discovery with P2P wildcard SSID and P2P IE.
124 enum brcmf_p2p_disc_state {
126 WL_P2P_DISC_ST_LISTEN,
127 WL_P2P_DISC_ST_SEARCH
131 * struct brcmf_p2p_scan_le - P2P specific scan request.
133 * @type: type of scan method requested (values: 'E' or 'S').
134 * @reserved: reserved (ignored).
135 * @eparams: parameters used for type 'E'.
136 * @sparams: parameters used for type 'S'.
138 struct brcmf_p2p_scan_le {
142 struct brcmf_escan_params_le eparams;
143 struct brcmf_scan_params_le sparams;
148 * struct brcmf_p2p_pub_act_frame - WiFi P2P Public Action Frame
150 * @category: P2P_PUB_AF_CATEGORY
151 * @action: P2P_PUB_AF_ACTION
153 * @oui_type: OUI type - P2P_VER
154 * @subtype: OUI subtype - P2P_TYPE_*
155 * @dialog_token: nonzero, identifies req/rsp transaction
156 * @elts[1]: Variable length information elements.
158 struct brcmf_p2p_pub_act_frame {
169 * struct brcmf_p2p_action_frame - WiFi P2P Action Frame
171 * @category: P2P_AF_CATEGORY
172 * @OUI[3]: OUI - P2P_OUI
173 * @type: OUI Type - P2P_VER
174 * @subtype: OUI Subtype - P2P_AF_*
175 * @dialog_token: nonzero, identifies req/resp tranaction
176 * @elts[1]: Variable length information elements.
178 struct brcmf_p2p_action_frame {
188 * struct brcmf_p2psd_gas_pub_act_frame - Wi-Fi GAS Public Action Frame
190 * @category: 0x04 Public Action Frame
191 * @action: 0x6c Advertisement Protocol
192 * @dialog_token: nonzero, identifies req/rsp transaction
193 * @query_data[1]: Query Data. SD gas ireq SD gas iresp
195 struct brcmf_p2psd_gas_pub_act_frame {
203 * struct brcmf_config_af_params - Action Frame Parameters for tx.
205 * @mpc_onoff: To make sure to send successfully action frame, we have to
206 * turn off mpc 0: off, 1: on, (-1): do nothing
207 * @search_channel: 1: search peer's channel to send af
208 * extra_listen: keep the dwell time to get af response frame.
210 struct brcmf_config_af_params {
217 * brcmf_p2p_is_pub_action() - true if p2p public type frame.
219 * @frame: action frame data.
220 * @frame_len: length of action frame data.
222 * Determine if action frame is p2p public action type
224 static bool brcmf_p2p_is_pub_action(void *frame, u32 frame_len)
226 struct brcmf_p2p_pub_act_frame *pact_frm;
231 pact_frm = (struct brcmf_p2p_pub_act_frame *)frame;
232 if (frame_len < sizeof(struct brcmf_p2p_pub_act_frame) - 1)
235 if (pact_frm->category == P2P_PUB_AF_CATEGORY &&
236 pact_frm->action == P2P_PUB_AF_ACTION &&
237 pact_frm->oui_type == P2P_VER &&
238 memcmp(pact_frm->oui, P2P_OUI, P2P_OUI_LEN) == 0)
245 * brcmf_p2p_is_p2p_action() - true if p2p action type frame.
247 * @frame: action frame data.
248 * @frame_len: length of action frame data.
250 * Determine if action frame is p2p action type
252 static bool brcmf_p2p_is_p2p_action(void *frame, u32 frame_len)
254 struct brcmf_p2p_action_frame *act_frm;
259 act_frm = (struct brcmf_p2p_action_frame *)frame;
260 if (frame_len < sizeof(struct brcmf_p2p_action_frame) - 1)
263 if (act_frm->category == P2P_AF_CATEGORY &&
264 act_frm->type == P2P_VER &&
265 memcmp(act_frm->oui, P2P_OUI, P2P_OUI_LEN) == 0)
272 * brcmf_p2p_is_gas_action() - true if p2p gas action type frame.
274 * @frame: action frame data.
275 * @frame_len: length of action frame data.
277 * Determine if action frame is p2p gas action type
279 static bool brcmf_p2p_is_gas_action(void *frame, u32 frame_len)
281 struct brcmf_p2psd_gas_pub_act_frame *sd_act_frm;
286 sd_act_frm = (struct brcmf_p2psd_gas_pub_act_frame *)frame;
287 if (frame_len < sizeof(struct brcmf_p2psd_gas_pub_act_frame) - 1)
290 if (sd_act_frm->category != P2PSD_ACTION_CATEGORY)
293 if (sd_act_frm->action == P2PSD_ACTION_ID_GAS_IREQ ||
294 sd_act_frm->action == P2PSD_ACTION_ID_GAS_IRESP ||
295 sd_act_frm->action == P2PSD_ACTION_ID_GAS_CREQ ||
296 sd_act_frm->action == P2PSD_ACTION_ID_GAS_CRESP)
303 * brcmf_p2p_print_actframe() - debug print routine.
305 * @tx: Received or to be transmitted
306 * @frame: action frame data.
307 * @frame_len: length of action frame data.
309 * Print information about the p2p action frame
314 static void brcmf_p2p_print_actframe(bool tx, void *frame, u32 frame_len)
316 struct brcmf_p2p_pub_act_frame *pact_frm;
317 struct brcmf_p2p_action_frame *act_frm;
318 struct brcmf_p2psd_gas_pub_act_frame *sd_act_frm;
320 if (!frame || frame_len <= 2)
323 if (brcmf_p2p_is_pub_action(frame, frame_len)) {
324 pact_frm = (struct brcmf_p2p_pub_act_frame *)frame;
325 switch (pact_frm->subtype) {
326 case P2P_PAF_GON_REQ:
327 brcmf_dbg(TRACE, "%s P2P Group Owner Negotiation Req Frame\n",
330 case P2P_PAF_GON_RSP:
331 brcmf_dbg(TRACE, "%s P2P Group Owner Negotiation Rsp Frame\n",
334 case P2P_PAF_GON_CONF:
335 brcmf_dbg(TRACE, "%s P2P Group Owner Negotiation Confirm Frame\n",
338 case P2P_PAF_INVITE_REQ:
339 brcmf_dbg(TRACE, "%s P2P Invitation Request Frame\n",
342 case P2P_PAF_INVITE_RSP:
343 brcmf_dbg(TRACE, "%s P2P Invitation Response Frame\n",
346 case P2P_PAF_DEVDIS_REQ:
347 brcmf_dbg(TRACE, "%s P2P Device Discoverability Request Frame\n",
350 case P2P_PAF_DEVDIS_RSP:
351 brcmf_dbg(TRACE, "%s P2P Device Discoverability Response Frame\n",
354 case P2P_PAF_PROVDIS_REQ:
355 brcmf_dbg(TRACE, "%s P2P Provision Discovery Request Frame\n",
358 case P2P_PAF_PROVDIS_RSP:
359 brcmf_dbg(TRACE, "%s P2P Provision Discovery Response Frame\n",
363 brcmf_dbg(TRACE, "%s Unknown P2P Public Action Frame\n",
367 } else if (brcmf_p2p_is_p2p_action(frame, frame_len)) {
368 act_frm = (struct brcmf_p2p_action_frame *)frame;
369 switch (act_frm->subtype) {
370 case P2P_AF_NOTICE_OF_ABSENCE:
371 brcmf_dbg(TRACE, "%s P2P Notice of Absence Frame\n",
374 case P2P_AF_PRESENCE_REQ:
375 brcmf_dbg(TRACE, "%s P2P Presence Request Frame\n",
378 case P2P_AF_PRESENCE_RSP:
379 brcmf_dbg(TRACE, "%s P2P Presence Response Frame\n",
382 case P2P_AF_GO_DISC_REQ:
383 brcmf_dbg(TRACE, "%s P2P Discoverability Request Frame\n",
387 brcmf_dbg(TRACE, "%s Unknown P2P Action Frame\n",
391 } else if (brcmf_p2p_is_gas_action(frame, frame_len)) {
392 sd_act_frm = (struct brcmf_p2psd_gas_pub_act_frame *)frame;
393 switch (sd_act_frm->action) {
394 case P2PSD_ACTION_ID_GAS_IREQ:
395 brcmf_dbg(TRACE, "%s P2P GAS Initial Request\n",
398 case P2PSD_ACTION_ID_GAS_IRESP:
399 brcmf_dbg(TRACE, "%s P2P GAS Initial Response\n",
402 case P2PSD_ACTION_ID_GAS_CREQ:
403 brcmf_dbg(TRACE, "%s P2P GAS Comback Request\n",
406 case P2PSD_ACTION_ID_GAS_CRESP:
407 brcmf_dbg(TRACE, "%s P2P GAS Comback Response\n",
411 brcmf_dbg(TRACE, "%s Unknown P2P GAS Frame\n",
420 static void brcmf_p2p_print_actframe(bool tx, void *frame, u32 frame_len)
428 * brcmf_p2p_set_firmware() - prepare firmware for peer-to-peer operation.
430 * @ifp: ifp to use for iovars (primary).
431 * @p2p_mac: mac address to configure for p2p_da_override
433 static int brcmf_p2p_set_firmware(struct brcmf_if *ifp, u8 *p2p_mac)
437 brcmf_fil_cmd_int_set(ifp, BRCMF_C_DOWN, 1);
438 brcmf_fil_iovar_int_set(ifp, "apsta", 1);
439 brcmf_fil_cmd_int_set(ifp, BRCMF_C_UP, 1);
441 /* In case of COB type, firmware has default mac address
442 * After Initializing firmware, we have to set current mac address to
443 * firmware for P2P device address
445 ret = brcmf_fil_iovar_data_set(ifp, "p2p_da_override", p2p_mac,
448 brcmf_err("failed to update device address ret %d\n", ret);
454 * brcmf_p2p_generate_bss_mac() - derive mac addresses for P2P.
456 * @p2p: P2P specific data.
457 * @dev_addr: optional device address.
459 * P2P needs mac addresses for P2P device and interface. If no device
460 * address it specified, these are derived from the primary net device, ie.
461 * the permanent ethernet address of the device.
463 static void brcmf_p2p_generate_bss_mac(struct brcmf_p2p_info *p2p, u8 *dev_addr)
465 struct brcmf_if *pri_ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp;
466 bool local_admin = false;
468 if (!dev_addr || is_zero_ether_addr(dev_addr)) {
469 dev_addr = pri_ifp->mac_addr;
473 /* Generate the P2P Device Address. This consists of the device's
474 * primary MAC address with the locally administered bit set.
476 memcpy(p2p->dev_addr, dev_addr, ETH_ALEN);
478 p2p->dev_addr[0] |= 0x02;
480 /* Generate the P2P Interface Address. If the discovery and connection
481 * BSSCFGs need to simultaneously co-exist, then this address must be
482 * different from the P2P Device Address, but also locally administered.
484 memcpy(p2p->int_addr, p2p->dev_addr, ETH_ALEN);
485 p2p->int_addr[0] |= 0x02;
486 p2p->int_addr[4] ^= 0x80;
490 * brcmf_p2p_scan_is_p2p_request() - is cfg80211 scan request a P2P scan.
492 * @request: the scan request as received from cfg80211.
494 * returns true if one of the ssids in the request matches the
495 * P2P wildcard ssid; otherwise returns false.
497 static bool brcmf_p2p_scan_is_p2p_request(struct cfg80211_scan_request *request)
499 struct cfg80211_ssid *ssids = request->ssids;
502 for (i = 0; i < request->n_ssids; i++) {
503 if (ssids[i].ssid_len != BRCMF_P2P_WILDCARD_SSID_LEN)
506 brcmf_dbg(INFO, "comparing ssid \"%s\"", ssids[i].ssid);
507 if (!memcmp(BRCMF_P2P_WILDCARD_SSID, ssids[i].ssid,
508 BRCMF_P2P_WILDCARD_SSID_LEN))
515 * brcmf_p2p_set_discover_state - set discover state in firmware.
517 * @ifp: low-level interface object.
518 * @state: discover state to set.
519 * @chanspec: channel parameters (for state @WL_P2P_DISC_ST_LISTEN only).
520 * @listen_ms: duration to listen (for state @WL_P2P_DISC_ST_LISTEN only).
522 static s32 brcmf_p2p_set_discover_state(struct brcmf_if *ifp, u8 state,
523 u16 chanspec, u16 listen_ms)
525 struct brcmf_p2p_disc_st_le discover_state;
527 brcmf_dbg(TRACE, "enter\n");
529 discover_state.state = state;
530 discover_state.chspec = cpu_to_le16(chanspec);
531 discover_state.dwell = cpu_to_le16(listen_ms);
532 ret = brcmf_fil_bsscfg_data_set(ifp, "p2p_state", &discover_state,
533 sizeof(discover_state));
538 * brcmf_p2p_deinit_discovery() - disable P2P device discovery.
540 * @p2p: P2P specific data.
542 * Resets the discovery state and disables it in firmware.
544 static s32 brcmf_p2p_deinit_discovery(struct brcmf_p2p_info *p2p)
546 struct brcmf_cfg80211_vif *vif;
548 brcmf_dbg(TRACE, "enter\n");
550 /* Set the discovery state to SCAN */
551 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
552 (void)brcmf_p2p_set_discover_state(vif->ifp, WL_P2P_DISC_ST_SCAN, 0, 0);
554 /* Disable P2P discovery in the firmware */
555 vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif;
556 (void)brcmf_fil_iovar_int_set(vif->ifp, "p2p_disc", 0);
562 * brcmf_p2p_enable_discovery() - initialize and configure discovery.
564 * @p2p: P2P specific data.
566 * Initializes the discovery device and configure the virtual interface.
568 static int brcmf_p2p_enable_discovery(struct brcmf_p2p_info *p2p)
570 struct brcmf_cfg80211_vif *vif;
573 brcmf_dbg(TRACE, "enter\n");
574 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
576 brcmf_err("P2P config device not available\n");
581 if (test_bit(BRCMF_P2P_STATUS_ENABLED, &p2p->status)) {
582 brcmf_dbg(INFO, "P2P config device already configured\n");
586 /* Re-initialize P2P Discovery in the firmware */
587 vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif;
588 ret = brcmf_fil_iovar_int_set(vif->ifp, "p2p_disc", 1);
590 brcmf_err("set p2p_disc error\n");
593 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
594 ret = brcmf_p2p_set_discover_state(vif->ifp, WL_P2P_DISC_ST_SCAN, 0, 0);
596 brcmf_err("unable to set WL_P2P_DISC_ST_SCAN\n");
601 * Set wsec to any non-zero value in the discovery bsscfg
602 * to ensure our P2P probe responses have the privacy bit
603 * set in the 802.11 WPA IE. Some peer devices may not
604 * initiate WPS with us if this bit is not set.
606 ret = brcmf_fil_bsscfg_int_set(vif->ifp, "wsec", AES_ENABLED);
608 brcmf_err("wsec error %d\n", ret);
612 set_bit(BRCMF_P2P_STATUS_ENABLED, &p2p->status);
618 * brcmf_p2p_escan() - initiate a P2P scan.
620 * @p2p: P2P specific data.
621 * @num_chans: number of channels to scan.
622 * @chanspecs: channel parameters for @num_chans channels.
623 * @search_state: P2P discover state to use.
624 * @action: scan action to pass to firmware.
625 * @bss_type: type of P2P bss.
627 static s32 brcmf_p2p_escan(struct brcmf_p2p_info *p2p, u32 num_chans,
628 u16 chanspecs[], s32 search_state, u16 action,
629 enum p2p_bss_type bss_type)
632 s32 memsize = offsetof(struct brcmf_p2p_scan_le,
633 eparams.params_le.channel_list);
638 struct brcmf_cfg80211_vif *vif;
639 struct brcmf_p2p_scan_le *p2p_params;
640 struct brcmf_scan_params_le *sparams;
641 struct brcmf_ssid ssid;
643 memsize += num_chans * sizeof(__le16);
644 memblk = kzalloc(memsize, GFP_KERNEL);
648 vif = p2p->bss_idx[bss_type].vif;
650 brcmf_err("no vif for bss type %d\n", bss_type);
655 switch (search_state) {
656 case WL_P2P_DISC_ST_SEARCH:
658 * If we in SEARCH STATE, we don't need to set SSID explictly
659 * because dongle use P2P WILDCARD internally by default
663 memset(ssid.SSID, 0, sizeof(ssid.SSID));
665 case WL_P2P_DISC_ST_SCAN:
667 * wpa_supplicant has p2p_find command with type social or
668 * progressive. For progressive, we need to set the ssid to
669 * P2P WILDCARD because we just do broadcast scan unless
672 ssid.SSID_len = BRCMF_P2P_WILDCARD_SSID_LEN;
673 memcpy(ssid.SSID, BRCMF_P2P_WILDCARD_SSID, ssid.SSID_len);
676 brcmf_err(" invalid search state %d\n", search_state);
681 brcmf_p2p_set_discover_state(vif->ifp, search_state, 0, 0);
684 * set p2p scan parameters.
686 p2p_params = (struct brcmf_p2p_scan_le *)memblk;
687 p2p_params->type = 'E';
689 /* determine the scan engine parameters */
690 sparams = &p2p_params->eparams.params_le;
691 sparams->bss_type = DOT11_BSSTYPE_ANY;
692 if (p2p->cfg->active_scan)
693 sparams->scan_type = 0;
695 sparams->scan_type = 1;
697 memset(&sparams->bssid, 0xFF, ETH_ALEN);
699 memcpy(sparams->ssid_le.SSID, ssid.SSID, ssid.SSID_len);
700 sparams->ssid_le.SSID_len = cpu_to_le32(ssid.SSID_len);
701 sparams->home_time = cpu_to_le32(P2PAPI_SCAN_HOME_TIME_MS);
704 * SOCIAL_CHAN_CNT + 1 takes care of the Progressive scan
705 * supported by the supplicant.
707 if (num_chans == SOCIAL_CHAN_CNT || num_chans == (SOCIAL_CHAN_CNT + 1))
708 active = P2PAPI_SCAN_SOCIAL_DWELL_TIME_MS;
709 else if (num_chans == AF_PEER_SEARCH_CNT)
710 active = P2PAPI_SCAN_AF_SEARCH_DWELL_TIME_MS;
711 else if (wl_get_vif_state_all(p2p->cfg, BRCMF_VIF_STATUS_CONNECTED))
714 active = P2PAPI_SCAN_DWELL_TIME_MS;
716 /* Override scan params to find a peer for a connection */
717 if (num_chans == 1) {
718 active = WL_SCAN_CONNECT_DWELL_TIME_MS;
719 /* WAR to sync with presence period of VSDB GO.
720 * send probe request more frequently
722 nprobes = active / WL_SCAN_JOIN_PROBE_INTERVAL_MS;
724 nprobes = active / P2PAPI_SCAN_NPROBS_TIME_MS;
730 brcmf_dbg(INFO, "nprobes # %d, active_time %d\n", nprobes, active);
731 sparams->active_time = cpu_to_le32(active);
732 sparams->nprobes = cpu_to_le32(nprobes);
733 sparams->passive_time = cpu_to_le32(-1);
734 sparams->channel_num = cpu_to_le32(num_chans &
735 BRCMF_SCAN_PARAMS_COUNT_MASK);
736 for (i = 0; i < num_chans; i++)
737 sparams->channel_list[i] = cpu_to_le16(chanspecs[i]);
739 /* set the escan specific parameters */
740 p2p_params->eparams.version = cpu_to_le32(BRCMF_ESCAN_REQ_VERSION);
741 p2p_params->eparams.action = cpu_to_le16(action);
742 p2p_params->eparams.sync_id = cpu_to_le16(0x1234);
743 /* perform p2p scan on primary device */
744 ret = brcmf_fil_bsscfg_data_set(vif->ifp, "p2p_scan", memblk, memsize);
746 set_bit(BRCMF_SCAN_STATUS_BUSY, &p2p->cfg->scan_status);
753 * brcmf_p2p_run_escan() - escan callback for peer-to-peer.
755 * @cfg: driver private data for cfg80211 interface.
756 * @ndev: net device for which scan is requested.
757 * @request: scan request from cfg80211.
758 * @action: scan action.
760 * Determines the P2P discovery state based to scan request parameters and
761 * validates the channels in the request.
763 static s32 brcmf_p2p_run_escan(struct brcmf_cfg80211_info *cfg,
764 struct brcmf_if *ifp,
765 struct cfg80211_scan_request *request,
768 struct brcmf_p2p_info *p2p = &cfg->p2p;
770 s32 search_state = WL_P2P_DISC_ST_SCAN;
771 struct brcmf_cfg80211_vif *vif;
772 struct net_device *dev = NULL;
773 int i, num_nodfs = 0;
776 brcmf_dbg(TRACE, "enter\n");
783 if (request->n_channels) {
784 chanspecs = kcalloc(request->n_channels, sizeof(*chanspecs),
790 vif = p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif;
792 dev = vif->wdev.netdev;
793 if (request->n_channels == 3 &&
794 request->channels[0]->hw_value == SOCIAL_CHAN_1 &&
795 request->channels[1]->hw_value == SOCIAL_CHAN_2 &&
796 request->channels[2]->hw_value == SOCIAL_CHAN_3) {
797 /* SOCIAL CHANNELS 1, 6, 11 */
798 search_state = WL_P2P_DISC_ST_SEARCH;
799 brcmf_dbg(INFO, "P2P SEARCH PHASE START\n");
800 } else if (dev != NULL && vif->mode == WL_MODE_AP) {
801 /* If you are already a GO, then do SEARCH only */
802 brcmf_dbg(INFO, "Already a GO. Do SEARCH Only\n");
803 search_state = WL_P2P_DISC_ST_SEARCH;
805 brcmf_dbg(INFO, "P2P SCAN STATE START\n");
809 * no P2P scanning on passive or DFS channels.
811 for (i = 0; i < request->n_channels; i++) {
812 struct ieee80211_channel *chan = request->channels[i];
814 if (chan->flags & (IEEE80211_CHAN_RADAR |
815 IEEE80211_CHAN_PASSIVE_SCAN))
818 chanspecs[i] = channel_to_chanspec(&p2p->cfg->d11inf,
820 brcmf_dbg(INFO, "%d: chan=%d, channel spec=%x\n",
821 num_nodfs, chan->hw_value, chanspecs[i]);
824 err = brcmf_p2p_escan(p2p, num_nodfs, chanspecs, search_state,
825 action, P2PAPI_BSSCFG_DEVICE);
829 brcmf_err("error (%d)\n", err);
835 * brcmf_p2p_find_listen_channel() - find listen channel in ie string.
837 * @ie: string of information elements.
838 * @ie_len: length of string.
840 * Scan ie for p2p ie and look for attribute 6 channel. If available determine
841 * channel and return it.
843 static s32 brcmf_p2p_find_listen_channel(const u8 *ie, u32 ie_len)
849 err = cfg80211_get_p2p_attr(ie, ie_len,
850 IEEE80211_P2P_ATTR_LISTEN_CHANNEL,
851 channel_ie, sizeof(channel_ie));
855 /* listen channel subel length format: */
856 /* 3(country) + 1(op. class) + 1(chan num) */
857 listen_channel = (s32)channel_ie[3 + 1];
859 if (listen_channel == SOCIAL_CHAN_1 ||
860 listen_channel == SOCIAL_CHAN_2 ||
861 listen_channel == SOCIAL_CHAN_3) {
862 brcmf_dbg(INFO, "Found my Listen Channel %d\n", listen_channel);
863 return listen_channel;
871 * brcmf_p2p_scan_prep() - prepare scan based on request.
873 * @wiphy: wiphy device.
874 * @request: scan request from cfg80211.
875 * @vif: vif on which scan request is to be executed.
877 * Prepare the scan appropriately for type of scan requested. Overrides the
878 * escan .run() callback for peer-to-peer scanning.
880 int brcmf_p2p_scan_prep(struct wiphy *wiphy,
881 struct cfg80211_scan_request *request,
882 struct brcmf_cfg80211_vif *vif)
884 struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
885 struct brcmf_p2p_info *p2p = &cfg->p2p;
888 if (brcmf_p2p_scan_is_p2p_request(request)) {
889 /* find my listen channel */
890 err = brcmf_p2p_find_listen_channel(request->ie,
895 p2p->afx_hdl.my_listen_chan = err;
897 clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);
898 brcmf_dbg(INFO, "P2P: GO_NEG_PHASE status cleared\n");
900 err = brcmf_p2p_enable_discovery(p2p);
904 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
906 /* override .run_escan() callback. */
907 cfg->escan_info.run = brcmf_p2p_run_escan;
909 err = brcmf_vif_set_mgmt_ie(vif, BRCMF_VNDR_IE_PRBREQ_FLAG,
910 request->ie, request->ie_len);
916 * brcmf_p2p_discover_listen() - set firmware to discover listen state.
919 * @channel: channel nr for discover listen.
920 * @duration: time in ms to stay on channel.
924 brcmf_p2p_discover_listen(struct brcmf_p2p_info *p2p, u16 channel, u32 duration)
926 struct brcmf_cfg80211_vif *vif;
927 struct brcmu_chan ch;
930 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
932 brcmf_err("Discovery is not set, so we have nothing to do\n");
937 if (test_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN, &p2p->status)) {
938 brcmf_err("Previous LISTEN is not completed yet\n");
939 /* WAR: prevent cookie mismatch in wpa_supplicant return OK */
944 ch.bw = BRCMU_CHAN_BW_20;
945 p2p->cfg->d11inf.encchspec(&ch);
946 err = brcmf_p2p_set_discover_state(vif->ifp, WL_P2P_DISC_ST_LISTEN,
947 ch.chspec, (u16)duration);
949 set_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN, &p2p->status);
950 p2p->remain_on_channel_cookie++;
958 * brcmf_p2p_remain_on_channel() - put device on channel and stay there.
960 * @wiphy: wiphy device.
961 * @channel: channel to stay on.
962 * @duration: time in ms to remain on channel.
965 int brcmf_p2p_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
966 struct ieee80211_channel *channel,
967 unsigned int duration, u64 *cookie)
969 struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
970 struct brcmf_p2p_info *p2p = &cfg->p2p;
974 channel_nr = ieee80211_frequency_to_channel(channel->center_freq);
975 brcmf_dbg(TRACE, "Enter, channel: %d, duration ms (%d)\n", channel_nr,
978 err = brcmf_p2p_enable_discovery(p2p);
981 err = brcmf_p2p_discover_listen(p2p, channel_nr, duration);
985 memcpy(&p2p->remain_on_channel, channel, sizeof(*channel));
986 *cookie = p2p->remain_on_channel_cookie;
987 cfg80211_ready_on_channel(wdev, *cookie, channel, duration, GFP_KERNEL);
995 * brcmf_p2p_notify_listen_complete() - p2p listen has completed.
997 * @ifp: interfac control.
998 * @e: event message. Not used, to make it usable for fweh event dispatcher.
999 * @data: payload of message. Not used.
1002 int brcmf_p2p_notify_listen_complete(struct brcmf_if *ifp,
1003 const struct brcmf_event_msg *e,
1006 struct brcmf_cfg80211_info *cfg = ifp->drvr->config;
1007 struct brcmf_p2p_info *p2p = &cfg->p2p;
1009 brcmf_dbg(TRACE, "Enter\n");
1010 if (test_and_clear_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN,
1012 if (test_and_clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN,
1014 clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME,
1016 brcmf_dbg(INFO, "Listen DONE, wake up wait_next_af\n");
1017 complete(&p2p->wait_next_af);
1020 cfg80211_remain_on_channel_expired(&ifp->vif->wdev,
1021 p2p->remain_on_channel_cookie,
1022 &p2p->remain_on_channel,
1030 * brcmf_p2p_cancel_remain_on_channel() - cancel p2p listen state.
1032 * @ifp: interfac control.
1035 void brcmf_p2p_cancel_remain_on_channel(struct brcmf_if *ifp)
1039 brcmf_p2p_set_discover_state(ifp, WL_P2P_DISC_ST_SCAN, 0, 0);
1040 brcmf_p2p_notify_listen_complete(ifp, NULL, NULL);
1045 * brcmf_p2p_act_frm_search() - search function for action frame.
1048 * channel: channel on which action frame is to be trasmitted.
1050 * search function to reach at common channel to send action frame. When
1051 * channel is 0 then all social channels will be used to send af
1053 static s32 brcmf_p2p_act_frm_search(struct brcmf_p2p_info *p2p, u16 channel)
1057 u16 *default_chan_list;
1059 struct brcmu_chan ch;
1061 brcmf_dbg(TRACE, "Enter\n");
1064 channel_cnt = AF_PEER_SEARCH_CNT;
1066 channel_cnt = SOCIAL_CHAN_CNT;
1067 default_chan_list = kzalloc(channel_cnt * sizeof(*default_chan_list),
1069 if (default_chan_list == NULL) {
1070 brcmf_err("channel list allocation failed\n");
1074 ch.bw = BRCMU_CHAN_BW_20;
1077 p2p->cfg->d11inf.encchspec(&ch);
1078 /* insert same channel to the chan_list */
1079 for (i = 0; i < channel_cnt; i++)
1080 default_chan_list[i] = ch.chspec;
1082 ch.chnum = SOCIAL_CHAN_1;
1083 p2p->cfg->d11inf.encchspec(&ch);
1084 default_chan_list[0] = ch.chspec;
1085 ch.chnum = SOCIAL_CHAN_2;
1086 p2p->cfg->d11inf.encchspec(&ch);
1087 default_chan_list[1] = ch.chspec;
1088 ch.chnum = SOCIAL_CHAN_3;
1089 p2p->cfg->d11inf.encchspec(&ch);
1090 default_chan_list[2] = ch.chspec;
1092 err = brcmf_p2p_escan(p2p, channel_cnt, default_chan_list,
1093 WL_P2P_DISC_ST_SEARCH, WL_ESCAN_ACTION_START,
1094 P2PAPI_BSSCFG_DEVICE);
1095 kfree(default_chan_list);
1102 * brcmf_p2p_afx_handler() - afx worker thread.
1107 static void brcmf_p2p_afx_handler(struct work_struct *work)
1109 struct afx_hdl *afx_hdl = container_of(work, struct afx_hdl, afx_work);
1110 struct brcmf_p2p_info *p2p = container_of(afx_hdl,
1111 struct brcmf_p2p_info,
1115 if (!afx_hdl->is_active)
1118 if (afx_hdl->is_listen && afx_hdl->my_listen_chan)
1120 err = brcmf_p2p_discover_listen(p2p, afx_hdl->my_listen_chan,
1121 100 * (1 + prandom_u32() % 3));
1123 err = brcmf_p2p_act_frm_search(p2p, afx_hdl->peer_listen_chan);
1126 brcmf_err("ERROR occurred! value is (%d)\n", err);
1127 if (test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL,
1129 complete(&afx_hdl->act_frm_scan);
1135 * brcmf_p2p_af_searching_channel() - search channel.
1137 * @p2p: p2p device info struct.
1140 static s32 brcmf_p2p_af_searching_channel(struct brcmf_p2p_info *p2p)
1142 struct afx_hdl *afx_hdl = &p2p->afx_hdl;
1143 struct brcmf_cfg80211_vif *pri_vif;
1144 unsigned long duration;
1147 brcmf_dbg(TRACE, "Enter\n");
1149 pri_vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif;
1151 INIT_COMPLETION(afx_hdl->act_frm_scan);
1152 set_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status);
1153 afx_hdl->is_active = true;
1154 afx_hdl->peer_chan = P2P_INVALID_CHANNEL;
1156 /* Loop to wait until we find a peer's channel or the
1157 * pending action frame tx is cancelled.
1160 duration = msecs_to_jiffies(P2P_AF_FRM_SCAN_MAX_WAIT);
1161 while ((retry < P2P_CHANNEL_SYNC_RETRY) &&
1162 (afx_hdl->peer_chan == P2P_INVALID_CHANNEL)) {
1163 afx_hdl->is_listen = false;
1164 brcmf_dbg(TRACE, "Scheduling action frame for sending.. (%d)\n",
1166 /* search peer on peer's listen channel */
1167 schedule_work(&afx_hdl->afx_work);
1168 wait_for_completion_timeout(&afx_hdl->act_frm_scan, duration);
1169 if ((afx_hdl->peer_chan != P2P_INVALID_CHANNEL) ||
1170 (!test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL,
1174 if (afx_hdl->my_listen_chan) {
1175 brcmf_dbg(TRACE, "Scheduling listen peer, channel=%d\n",
1176 afx_hdl->my_listen_chan);
1177 /* listen on my listen channel */
1178 afx_hdl->is_listen = true;
1179 schedule_work(&afx_hdl->afx_work);
1180 wait_for_completion_timeout(&afx_hdl->act_frm_scan,
1183 if ((afx_hdl->peer_chan != P2P_INVALID_CHANNEL) ||
1184 (!test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL,
1189 /* if sta is connected or connecting, sleep for a while before
1190 * retry af tx or finding a peer
1192 if (test_bit(BRCMF_VIF_STATUS_CONNECTED, &pri_vif->sme_state) ||
1193 test_bit(BRCMF_VIF_STATUS_CONNECTING, &pri_vif->sme_state))
1194 msleep(P2P_DEFAULT_SLEEP_TIME_VSDB);
1197 brcmf_dbg(TRACE, "Completed search/listen peer_chan=%d\n",
1198 afx_hdl->peer_chan);
1199 afx_hdl->is_active = false;
1201 clear_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status);
1203 return afx_hdl->peer_chan;
1208 * brcmf_p2p_scan_finding_common_channel() - was escan used for finding channel
1210 * @cfg: common configuration struct.
1211 * @bi: bss info struct, result from scan.
1214 bool brcmf_p2p_scan_finding_common_channel(struct brcmf_cfg80211_info *cfg,
1215 struct brcmf_bss_info_le *bi)
1218 struct brcmf_p2p_info *p2p = &cfg->p2p;
1219 struct afx_hdl *afx_hdl = &p2p->afx_hdl;
1220 struct brcmu_chan ch;
1223 u8 p2p_dev_addr[ETH_ALEN];
1225 if (!test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status))
1229 brcmf_dbg(TRACE, "ACTION FRAME SCAN Done\n");
1230 if (afx_hdl->peer_chan == P2P_INVALID_CHANNEL)
1231 complete(&afx_hdl->act_frm_scan);
1235 ie = ((u8 *)bi) + le16_to_cpu(bi->ie_offset);
1236 memset(p2p_dev_addr, 0, sizeof(p2p_dev_addr));
1237 err = cfg80211_get_p2p_attr(ie, le32_to_cpu(bi->ie_length),
1238 IEEE80211_P2P_ATTR_DEVICE_INFO,
1239 p2p_dev_addr, sizeof(p2p_dev_addr));
1241 err = cfg80211_get_p2p_attr(ie, le32_to_cpu(bi->ie_length),
1242 IEEE80211_P2P_ATTR_DEVICE_ID,
1243 p2p_dev_addr, sizeof(p2p_dev_addr));
1245 (!memcmp(p2p_dev_addr, afx_hdl->tx_dst_addr, ETH_ALEN))) {
1247 ch.chspec = le16_to_cpu(bi->chanspec);
1248 cfg->d11inf.decchspec(&ch);
1249 bi->ctl_ch = ch.chnum;
1251 afx_hdl->peer_chan = bi->ctl_ch;
1252 brcmf_dbg(TRACE, "ACTION FRAME SCAN : Peer %pM found, channel : %d\n",
1253 afx_hdl->tx_dst_addr, afx_hdl->peer_chan);
1254 complete(&afx_hdl->act_frm_scan);
1260 * brcmf_p2p_stop_wait_next_action_frame() - finish scan if af tx complete.
1262 * @cfg: common configuration struct.
1266 brcmf_p2p_stop_wait_next_action_frame(struct brcmf_cfg80211_info *cfg)
1268 struct brcmf_p2p_info *p2p = &cfg->p2p;
1269 struct brcmf_if *ifp = cfg->escan_info.ifp;
1271 if (test_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status) &&
1272 (test_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status) ||
1273 test_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status))) {
1274 brcmf_dbg(TRACE, "*** Wake UP ** abort actframe iovar\n");
1275 /* if channel is not zero, "actfame" uses off channel scan.
1276 * So abort scan for off channel completion.
1278 if (p2p->af_sent_channel)
1279 brcmf_notify_escan_complete(cfg, ifp, true, true);
1280 } else if (test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN,
1282 brcmf_dbg(TRACE, "*** Wake UP ** abort listen for next af frame\n");
1283 /* So abort scan to cancel listen */
1284 brcmf_notify_escan_complete(cfg, ifp, true, true);
1290 * brcmf_p2p_gon_req_collision() - Check if go negotiaton collission
1292 * @p2p: p2p device info struct.
1294 * return true if recevied action frame is to be dropped.
1297 brcmf_p2p_gon_req_collision(struct brcmf_p2p_info *p2p, u8 *mac)
1299 struct brcmf_cfg80211_info *cfg = p2p->cfg;
1300 struct brcmf_if *ifp;
1302 brcmf_dbg(TRACE, "Enter\n");
1304 if (!test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status) ||
1305 !p2p->gon_req_action)
1308 brcmf_dbg(TRACE, "GO Negotiation Request COLLISION !!!\n");
1309 /* if sa(peer) addr is less than da(my) addr, then this device
1310 * process peer's gon request and block to send gon req.
1311 * if not (sa addr > da addr),
1312 * this device will process gon request and drop gon req of peer.
1314 ifp = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif->ifp;
1315 if (memcmp(mac, ifp->mac_addr, ETH_ALEN) < 0) {
1316 brcmf_dbg(INFO, "Block transmit gon req !!!\n");
1317 p2p->block_gon_req_tx = true;
1318 /* if we are finding a common channel for sending af,
1319 * do not scan more to block to send current gon req
1321 if (test_and_clear_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL,
1323 complete(&p2p->afx_hdl.act_frm_scan);
1324 if (test_and_clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME,
1326 brcmf_p2p_stop_wait_next_action_frame(cfg);
1330 /* drop gon request of peer to process gon request by this device. */
1331 brcmf_dbg(INFO, "Drop received gon req !!!\n");
1338 * brcmf_p2p_notify_action_frame_rx() - received action frame.
1340 * @ifp: interfac control.
1341 * @e: event message. Not used, to make it usable for fweh event dispatcher.
1342 * @data: payload of message, containing action frame data.
1345 int brcmf_p2p_notify_action_frame_rx(struct brcmf_if *ifp,
1346 const struct brcmf_event_msg *e,
1349 struct brcmf_cfg80211_info *cfg = ifp->drvr->config;
1350 struct brcmf_p2p_info *p2p = &cfg->p2p;
1351 struct afx_hdl *afx_hdl = &p2p->afx_hdl;
1352 struct wireless_dev *wdev;
1353 u32 mgmt_frame_len = e->datalen - sizeof(struct brcmf_rx_mgmt_data);
1354 struct brcmf_rx_mgmt_data *rxframe = (struct brcmf_rx_mgmt_data *)data;
1355 u8 *frame = (u8 *)(rxframe + 1);
1356 struct brcmf_p2p_pub_act_frame *act_frm;
1357 struct brcmf_p2psd_gas_pub_act_frame *sd_act_frm;
1358 struct brcmu_chan ch;
1359 struct ieee80211_mgmt *mgmt_frame;
1364 ch.chspec = be16_to_cpu(rxframe->chanspec);
1365 cfg->d11inf.decchspec(&ch);
1366 /* Check if wpa_supplicant has registered for this frame */
1367 brcmf_dbg(INFO, "ifp->vif->mgmt_rx_reg %04x\n", ifp->vif->mgmt_rx_reg);
1368 mgmt_type = (IEEE80211_STYPE_ACTION & IEEE80211_FCTL_STYPE) >> 4;
1369 if ((ifp->vif->mgmt_rx_reg & BIT(mgmt_type)) == 0)
1372 brcmf_p2p_print_actframe(false, frame, mgmt_frame_len);
1374 action = P2P_PAF_SUBTYPE_INVALID;
1375 if (brcmf_p2p_is_pub_action(frame, mgmt_frame_len)) {
1376 act_frm = (struct brcmf_p2p_pub_act_frame *)frame;
1377 action = act_frm->subtype;
1378 if ((action == P2P_PAF_GON_REQ) &&
1379 (brcmf_p2p_gon_req_collision(p2p, (u8 *)e->addr))) {
1380 if (test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL,
1382 (memcmp(afx_hdl->tx_dst_addr, e->addr,
1384 afx_hdl->peer_chan = ch.chnum;
1385 brcmf_dbg(INFO, "GON request: Peer found, channel=%d\n",
1386 afx_hdl->peer_chan);
1387 complete(&afx_hdl->act_frm_scan);
1391 /* After complete GO Negotiation, roll back to mpc mode */
1392 if ((action == P2P_PAF_GON_CONF) ||
1393 (action == P2P_PAF_PROVDIS_RSP))
1394 brcmf_set_mpc(ifp, 1);
1395 if (action == P2P_PAF_GON_CONF) {
1396 brcmf_dbg(TRACE, "P2P: GO_NEG_PHASE status cleared\n");
1397 clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);
1399 } else if (brcmf_p2p_is_gas_action(frame, mgmt_frame_len)) {
1400 sd_act_frm = (struct brcmf_p2psd_gas_pub_act_frame *)frame;
1401 action = sd_act_frm->action;
1404 if (test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status) &&
1405 (p2p->next_af_subtype == action)) {
1406 brcmf_dbg(TRACE, "We got a right next frame! (%d)\n", action);
1407 clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME,
1409 /* Stop waiting for next AF. */
1410 brcmf_p2p_stop_wait_next_action_frame(cfg);
1413 mgmt_frame = kzalloc(offsetof(struct ieee80211_mgmt, u) +
1414 mgmt_frame_len, GFP_KERNEL);
1416 brcmf_err("No memory available for action frame\n");
1419 memcpy(mgmt_frame->da, ifp->mac_addr, ETH_ALEN);
1420 brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_BSSID, mgmt_frame->bssid,
1422 memcpy(mgmt_frame->sa, e->addr, ETH_ALEN);
1423 mgmt_frame->frame_control = cpu_to_le16(IEEE80211_STYPE_ACTION);
1424 memcpy(&mgmt_frame->u, frame, mgmt_frame_len);
1425 mgmt_frame_len += offsetof(struct ieee80211_mgmt, u);
1427 freq = ieee80211_channel_to_frequency(ch.chnum,
1428 ch.band == BRCMU_CHAN_BAND_2G ?
1429 IEEE80211_BAND_2GHZ :
1430 IEEE80211_BAND_5GHZ);
1432 wdev = &ifp->vif->wdev;
1433 cfg80211_rx_mgmt(wdev, freq, 0, (u8 *)mgmt_frame, mgmt_frame_len,
1442 * brcmf_p2p_notify_action_tx_complete() - transmit action frame complete
1444 * @ifp: interfac control.
1445 * @e: event message. Not used, to make it usable for fweh event dispatcher.
1449 int brcmf_p2p_notify_action_tx_complete(struct brcmf_if *ifp,
1450 const struct brcmf_event_msg *e,
1453 struct brcmf_cfg80211_info *cfg = ifp->drvr->config;
1454 struct brcmf_p2p_info *p2p = &cfg->p2p;
1456 brcmf_dbg(INFO, "Enter: event %s, status=%d\n",
1457 e->event_code == BRCMF_E_ACTION_FRAME_OFF_CHAN_COMPLETE ?
1458 "ACTION_FRAME_OFF_CHAN_COMPLETE" : "ACTION_FRAME_COMPLETE",
1461 if (!test_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status))
1464 if (e->event_code == BRCMF_E_ACTION_FRAME_COMPLETE) {
1465 if (e->status == BRCMF_E_STATUS_SUCCESS)
1466 set_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED,
1469 set_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status);
1470 /* If there is no ack, we don't need to wait for
1471 * WLC_E_ACTION_FRAME_OFFCHAN_COMPLETE event
1473 brcmf_p2p_stop_wait_next_action_frame(cfg);
1477 complete(&p2p->send_af_done);
1484 * brcmf_p2p_tx_action_frame() - send action frame over fil.
1486 * @p2p: p2p info struct for vif.
1487 * @af_params: action frame data/info.
1489 * Send an action frame immediately without doing channel synchronization.
1491 * This function waits for a completion event before returning.
1492 * The WLC_E_ACTION_FRAME_COMPLETE event will be received when the action
1493 * frame is transmitted.
1495 static s32 brcmf_p2p_tx_action_frame(struct brcmf_p2p_info *p2p,
1496 struct brcmf_fil_af_params_le *af_params)
1498 struct brcmf_cfg80211_vif *vif;
1502 brcmf_dbg(TRACE, "Enter\n");
1504 INIT_COMPLETION(p2p->send_af_done);
1505 clear_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status);
1506 clear_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status);
1508 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
1509 err = brcmf_fil_bsscfg_data_set(vif->ifp, "actframe", af_params,
1510 sizeof(*af_params));
1512 brcmf_err(" sending action frame has failed\n");
1516 p2p->af_sent_channel = le32_to_cpu(af_params->channel);
1517 p2p->af_tx_sent_jiffies = jiffies;
1519 timeout = wait_for_completion_timeout(&p2p->send_af_done,
1520 msecs_to_jiffies(P2P_AF_MAX_WAIT_TIME));
1522 if (test_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status)) {
1523 brcmf_dbg(TRACE, "TX action frame operation is success\n");
1526 brcmf_dbg(TRACE, "TX action frame operation has failed\n");
1528 /* clear status bit for action tx */
1529 clear_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status);
1530 clear_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status);
1538 * brcmf_p2p_pub_af_tx() - public action frame tx routine.
1540 * @cfg: driver private data for cfg80211 interface.
1541 * @af_params: action frame data/info.
1542 * @config_af_params: configuration data for action frame.
1544 * routine which transmits ation frame public type.
1546 static s32 brcmf_p2p_pub_af_tx(struct brcmf_cfg80211_info *cfg,
1547 struct brcmf_fil_af_params_le *af_params,
1548 struct brcmf_config_af_params *config_af_params)
1550 struct brcmf_p2p_info *p2p = &cfg->p2p;
1551 struct brcmf_fil_action_frame_le *action_frame;
1552 struct brcmf_p2p_pub_act_frame *act_frm;
1556 action_frame = &af_params->action_frame;
1557 act_frm = (struct brcmf_p2p_pub_act_frame *)(action_frame->data);
1559 config_af_params->extra_listen = true;
1561 switch (act_frm->subtype) {
1562 case P2P_PAF_GON_REQ:
1563 brcmf_dbg(TRACE, "P2P: GO_NEG_PHASE status set\n");
1564 set_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);
1565 config_af_params->mpc_onoff = 0;
1566 config_af_params->search_channel = true;
1567 p2p->next_af_subtype = act_frm->subtype + 1;
1568 p2p->gon_req_action = true;
1569 /* increase dwell time to wait for RESP frame */
1570 af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME);
1572 case P2P_PAF_GON_RSP:
1573 p2p->next_af_subtype = act_frm->subtype + 1;
1574 /* increase dwell time to wait for CONF frame */
1575 af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME);
1577 case P2P_PAF_GON_CONF:
1578 /* If we reached till GO Neg confirmation reset the filter */
1579 brcmf_dbg(TRACE, "P2P: GO_NEG_PHASE status cleared\n");
1580 clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);
1581 /* turn on mpc again if go nego is done */
1582 config_af_params->mpc_onoff = 1;
1583 /* minimize dwell time */
1584 af_params->dwell_time = cpu_to_le32(P2P_AF_MIN_DWELL_TIME);
1585 config_af_params->extra_listen = false;
1587 case P2P_PAF_INVITE_REQ:
1588 config_af_params->search_channel = true;
1589 p2p->next_af_subtype = act_frm->subtype + 1;
1590 /* increase dwell time */
1591 af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME);
1593 case P2P_PAF_INVITE_RSP:
1594 /* minimize dwell time */
1595 af_params->dwell_time = cpu_to_le32(P2P_AF_MIN_DWELL_TIME);
1596 config_af_params->extra_listen = false;
1598 case P2P_PAF_DEVDIS_REQ:
1599 config_af_params->search_channel = true;
1600 p2p->next_af_subtype = act_frm->subtype + 1;
1601 /* maximize dwell time to wait for RESP frame */
1602 af_params->dwell_time = cpu_to_le32(P2P_AF_LONG_DWELL_TIME);
1604 case P2P_PAF_DEVDIS_RSP:
1605 /* minimize dwell time */
1606 af_params->dwell_time = cpu_to_le32(P2P_AF_MIN_DWELL_TIME);
1607 config_af_params->extra_listen = false;
1609 case P2P_PAF_PROVDIS_REQ:
1610 ie_len = le16_to_cpu(action_frame->len) -
1611 offsetof(struct brcmf_p2p_pub_act_frame, elts);
1612 if (cfg80211_get_p2p_attr(&act_frm->elts[0], ie_len,
1613 IEEE80211_P2P_ATTR_GROUP_ID,
1615 config_af_params->search_channel = true;
1616 config_af_params->mpc_onoff = 0;
1617 p2p->next_af_subtype = act_frm->subtype + 1;
1618 /* increase dwell time to wait for RESP frame */
1619 af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME);
1621 case P2P_PAF_PROVDIS_RSP:
1622 /* wpa_supplicant send go nego req right after prov disc */
1623 p2p->next_af_subtype = P2P_PAF_GON_REQ;
1624 /* increase dwell time to MED level */
1625 af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME);
1626 config_af_params->extra_listen = false;
1629 brcmf_err("Unknown p2p pub act frame subtype: %d\n",
1637 * brcmf_p2p_send_action_frame() - send action frame .
1639 * @cfg: driver private data for cfg80211 interface.
1640 * @ndev: net device to transmit on.
1641 * @af_params: configuration data for action frame.
1643 bool brcmf_p2p_send_action_frame(struct brcmf_cfg80211_info *cfg,
1644 struct net_device *ndev,
1645 struct brcmf_fil_af_params_le *af_params)
1647 struct brcmf_p2p_info *p2p = &cfg->p2p;
1648 struct brcmf_if *ifp = netdev_priv(ndev);
1649 struct brcmf_fil_action_frame_le *action_frame;
1650 struct brcmf_config_af_params config_af_params;
1651 struct afx_hdl *afx_hdl = &p2p->afx_hdl;
1652 u16 action_frame_len;
1657 s32 extra_listen_time;
1660 action_frame = &af_params->action_frame;
1661 action_frame_len = le16_to_cpu(action_frame->len);
1663 brcmf_p2p_print_actframe(true, action_frame->data, action_frame_len);
1665 /* Add the default dwell time. Dwell time to stay off-channel */
1666 /* to wait for a response action frame after transmitting an */
1667 /* GO Negotiation action frame */
1668 af_params->dwell_time = cpu_to_le32(P2P_AF_DWELL_TIME);
1670 category = action_frame->data[DOT11_ACTION_CAT_OFF];
1671 action = action_frame->data[DOT11_ACTION_ACT_OFF];
1673 /* initialize variables */
1674 p2p->next_af_subtype = P2P_PAF_SUBTYPE_INVALID;
1675 p2p->gon_req_action = false;
1677 /* config parameters */
1678 config_af_params.mpc_onoff = -1;
1679 config_af_params.search_channel = false;
1680 config_af_params.extra_listen = false;
1682 if (brcmf_p2p_is_pub_action(action_frame->data, action_frame_len)) {
1683 /* p2p public action frame process */
1684 if (brcmf_p2p_pub_af_tx(cfg, af_params, &config_af_params)) {
1685 /* Just send unknown subtype frame with */
1686 /* default parameters. */
1687 brcmf_err("P2P Public action frame, unknown subtype.\n");
1689 } else if (brcmf_p2p_is_gas_action(action_frame->data,
1690 action_frame_len)) {
1691 /* service discovery process */
1692 if (action == P2PSD_ACTION_ID_GAS_IREQ ||
1693 action == P2PSD_ACTION_ID_GAS_CREQ) {
1694 /* configure service discovery query frame */
1695 config_af_params.search_channel = true;
1697 /* save next af suptype to cancel */
1698 /* remaining dwell time */
1699 p2p->next_af_subtype = action + 1;
1701 af_params->dwell_time =
1702 cpu_to_le32(P2P_AF_MED_DWELL_TIME);
1703 } else if (action == P2PSD_ACTION_ID_GAS_IRESP ||
1704 action == P2PSD_ACTION_ID_GAS_CRESP) {
1705 /* configure service discovery response frame */
1706 af_params->dwell_time =
1707 cpu_to_le32(P2P_AF_MIN_DWELL_TIME);
1709 brcmf_err("Unknown action type: %d\n", action);
1712 } else if (brcmf_p2p_is_p2p_action(action_frame->data,
1713 action_frame_len)) {
1714 /* do not configure anything. it will be */
1715 /* sent with a default configuration */
1717 brcmf_err("Unknown Frame: category 0x%x, action 0x%x\n",
1722 /* if connecting on primary iface, sleep for a while before sending
1725 if (test_bit(BRCMF_VIF_STATUS_CONNECTING,
1726 &p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->sme_state))
1729 /* if scan is ongoing, abort current scan. */
1730 if (test_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status))
1731 brcmf_abort_scanning(cfg);
1733 memcpy(afx_hdl->tx_dst_addr, action_frame->da, ETH_ALEN);
1735 /* To make sure to send successfully action frame, turn off mpc */
1736 if (config_af_params.mpc_onoff == 0)
1737 brcmf_set_mpc(ifp, 0);
1739 /* set status and destination address before sending af */
1740 if (p2p->next_af_subtype != P2P_PAF_SUBTYPE_INVALID) {
1741 /* set status to cancel the remained dwell time in rx process */
1742 set_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status);
1745 p2p->af_sent_channel = 0;
1746 set_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status);
1747 /* validate channel and p2p ies */
1748 if (config_af_params.search_channel &&
1749 IS_P2P_SOCIAL_CHANNEL(le32_to_cpu(af_params->channel)) &&
1750 p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif->saved_ie.probe_req_ie_len) {
1751 afx_hdl = &p2p->afx_hdl;
1752 afx_hdl->peer_listen_chan = le32_to_cpu(af_params->channel);
1754 if (brcmf_p2p_af_searching_channel(p2p) ==
1755 P2P_INVALID_CHANNEL) {
1756 brcmf_err("Couldn't find peer's channel.\n");
1760 /* Abort scan even for VSDB scenarios. Scan gets aborted in
1761 * firmware but after the check of piggyback algorithm. To take
1762 * care of current piggback algo, lets abort the scan here
1765 brcmf_notify_escan_complete(cfg, ifp, true, true);
1767 /* update channel */
1768 af_params->channel = cpu_to_le32(afx_hdl->peer_chan);
1772 while (!p2p->block_gon_req_tx &&
1773 (ack == false) && (tx_retry < P2P_AF_TX_MAX_RETRY)) {
1774 ack = !brcmf_p2p_tx_action_frame(p2p, af_params);
1778 brcmf_err("Failed to send Action Frame(retry %d)\n", tx_retry);
1779 clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);
1783 clear_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status);
1785 /* WAR: sometimes dongle does not keep the dwell time of 'actframe'.
1786 * if we coundn't get the next action response frame and dongle does
1787 * not keep the dwell time, go to listen state again to get next action
1790 if (ack && config_af_params.extra_listen && !p2p->block_gon_req_tx &&
1791 test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status) &&
1792 p2p->af_sent_channel == afx_hdl->my_listen_chan) {
1793 delta_ms = jiffies_to_msecs(jiffies - p2p->af_tx_sent_jiffies);
1794 if (le32_to_cpu(af_params->dwell_time) > delta_ms)
1795 extra_listen_time = le32_to_cpu(af_params->dwell_time) -
1798 extra_listen_time = 0;
1799 if (extra_listen_time > 50) {
1800 set_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN,
1802 brcmf_dbg(INFO, "Wait more time! actual af time:%d, calculated extra listen:%d\n",
1803 le32_to_cpu(af_params->dwell_time),
1805 extra_listen_time += 100;
1806 if (!brcmf_p2p_discover_listen(p2p,
1807 p2p->af_sent_channel,
1808 extra_listen_time)) {
1809 unsigned long duration;
1811 extra_listen_time += 100;
1812 duration = msecs_to_jiffies(extra_listen_time);
1813 wait_for_completion_timeout(&p2p->wait_next_af,
1816 clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN,
1821 if (p2p->block_gon_req_tx) {
1822 /* if ack is true, supplicant will wait more time(100ms).
1823 * so we will return it as a success to get more time .
1825 p2p->block_gon_req_tx = false;
1829 clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status);
1830 /* if all done, turn mpc on again */
1831 if (config_af_params.mpc_onoff == 1)
1832 brcmf_set_mpc(ifp, 1);
1838 * brcmf_p2p_notify_rx_mgmt_p2p_probereq() - Event handler for p2p probe req.
1840 * @ifp: interface pointer for which event was received.
1842 * @data: payload of event message (probe request).
1844 s32 brcmf_p2p_notify_rx_mgmt_p2p_probereq(struct brcmf_if *ifp,
1845 const struct brcmf_event_msg *e,
1848 struct brcmf_cfg80211_info *cfg = ifp->drvr->config;
1849 struct brcmf_p2p_info *p2p = &cfg->p2p;
1850 struct afx_hdl *afx_hdl = &p2p->afx_hdl;
1851 struct brcmf_cfg80211_vif *vif = ifp->vif;
1852 struct brcmf_rx_mgmt_data *rxframe = (struct brcmf_rx_mgmt_data *)data;
1853 u16 chanspec = be16_to_cpu(rxframe->chanspec);
1854 struct brcmu_chan ch;
1860 brcmf_dbg(INFO, "Enter: event %d reason %d\n", e->event_code,
1863 ch.chspec = be16_to_cpu(rxframe->chanspec);
1864 cfg->d11inf.decchspec(&ch);
1866 if (test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status) &&
1867 (memcmp(afx_hdl->tx_dst_addr, e->addr, ETH_ALEN) == 0)) {
1868 afx_hdl->peer_chan = ch.chnum;
1869 brcmf_dbg(INFO, "PROBE REQUEST: Peer found, channel=%d\n",
1870 afx_hdl->peer_chan);
1871 complete(&afx_hdl->act_frm_scan);
1874 /* Firmware sends us two proberesponses for each idx one. At the */
1875 /* moment anything but bsscfgidx 0 is passed up to supplicant */
1876 if (e->bsscfgidx == 0)
1879 /* Filter any P2P probe reqs arriving during the GO-NEG Phase */
1880 if (test_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status)) {
1881 brcmf_dbg(INFO, "Filtering P2P probe_req in GO-NEG phase\n");
1885 /* Check if wpa_supplicant has registered for this frame */
1886 brcmf_dbg(INFO, "vif->mgmt_rx_reg %04x\n", vif->mgmt_rx_reg);
1887 mgmt_type = (IEEE80211_STYPE_PROBE_REQ & IEEE80211_FCTL_STYPE) >> 4;
1888 if ((vif->mgmt_rx_reg & BIT(mgmt_type)) == 0)
1891 mgmt_frame = (u8 *)(rxframe + 1);
1892 mgmt_frame_len = e->datalen - sizeof(*rxframe);
1893 freq = ieee80211_channel_to_frequency(ch.chnum,
1894 ch.band == BRCMU_CHAN_BAND_2G ?
1895 IEEE80211_BAND_2GHZ :
1896 IEEE80211_BAND_5GHZ);
1898 cfg80211_rx_mgmt(&vif->wdev, freq, 0, mgmt_frame, mgmt_frame_len,
1901 brcmf_dbg(INFO, "mgmt_frame_len (%d) , e->datalen (%d), chanspec (%04x), freq (%d)\n",
1902 mgmt_frame_len, e->datalen, chanspec, freq);
1909 * brcmf_p2p_attach() - attach for P2P.
1911 * @cfg: driver private data for cfg80211 interface.
1913 s32 brcmf_p2p_attach(struct brcmf_cfg80211_info *cfg)
1915 struct brcmf_if *pri_ifp;
1916 struct brcmf_if *p2p_ifp;
1917 struct brcmf_cfg80211_vif *p2p_vif;
1918 struct brcmf_p2p_info *p2p;
1919 struct brcmf_pub *drvr;
1928 pri_ifp = drvr->iflist[0];
1929 p2p_ifp = drvr->iflist[1];
1931 p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif = pri_ifp->vif;
1934 p2p_vif = brcmf_alloc_vif(cfg, NL80211_IFTYPE_P2P_DEVICE,
1936 if (IS_ERR(p2p_vif)) {
1937 brcmf_err("could not create discovery vif\n");
1942 p2p_vif->ifp = p2p_ifp;
1943 p2p_ifp->vif = p2p_vif;
1944 p2p_vif->wdev.netdev = p2p_ifp->ndev;
1945 p2p_ifp->ndev->ieee80211_ptr = &p2p_vif->wdev;
1946 SET_NETDEV_DEV(p2p_ifp->ndev, wiphy_dev(cfg->wiphy));
1948 p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif = p2p_vif;
1950 brcmf_p2p_generate_bss_mac(p2p, NULL);
1951 memcpy(p2p_ifp->mac_addr, p2p->dev_addr, ETH_ALEN);
1952 brcmf_p2p_set_firmware(pri_ifp, p2p->dev_addr);
1954 /* Initialize P2P Discovery in the firmware */
1955 err = brcmf_fil_iovar_int_set(pri_ifp, "p2p_disc", 1);
1957 brcmf_err("set p2p_disc error\n");
1958 brcmf_free_vif(cfg, p2p_vif);
1961 /* obtain bsscfg index for P2P discovery */
1962 err = brcmf_fil_iovar_int_get(pri_ifp, "p2p_dev", &bssidx);
1964 brcmf_err("retrieving discover bsscfg index failed\n");
1965 brcmf_free_vif(cfg, p2p_vif);
1968 /* Verify that firmware uses same bssidx as driver !! */
1969 if (p2p_ifp->bssidx != bssidx) {
1970 brcmf_err("Incorrect bssidx=%d, compared to p2p_ifp->bssidx=%d\n",
1971 bssidx, p2p_ifp->bssidx);
1972 brcmf_free_vif(cfg, p2p_vif);
1976 init_completion(&p2p->send_af_done);
1977 INIT_WORK(&p2p->afx_hdl.afx_work, brcmf_p2p_afx_handler);
1978 init_completion(&p2p->afx_hdl.act_frm_scan);
1979 init_completion(&p2p->wait_next_af);
1987 * brcmf_p2p_detach() - detach P2P.
1989 * @p2p: P2P specific data.
1991 void brcmf_p2p_detach(struct brcmf_p2p_info *p2p)
1993 struct brcmf_cfg80211_vif *vif;
1995 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
1997 brcmf_p2p_cancel_remain_on_channel(vif->ifp);
1998 brcmf_p2p_deinit_discovery(p2p);
1999 /* remove discovery interface */
2000 brcmf_free_vif(p2p->cfg, vif);
2001 p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif = NULL;
2003 /* just set it all to zero */
2004 memset(p2p, 0, sizeof(*p2p));
2008 * brcmf_p2p_get_current_chanspec() - Get current operation channel.
2010 * @p2p: P2P specific data.
2011 * @chanspec: chanspec to be returned.
2013 static void brcmf_p2p_get_current_chanspec(struct brcmf_p2p_info *p2p,
2016 struct brcmf_if *ifp;
2017 u8 mac_addr[ETH_ALEN];
2018 struct brcmu_chan ch;
2019 struct brcmf_bss_info_le *bi;
2022 ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp;
2024 if (brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_BSSID, mac_addr,
2026 buf = kzalloc(WL_BSS_INFO_MAX, GFP_KERNEL);
2028 *(__le32 *)buf = cpu_to_le32(WL_BSS_INFO_MAX);
2029 if (brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_BSS_INFO,
2030 buf, WL_BSS_INFO_MAX) == 0) {
2031 bi = (struct brcmf_bss_info_le *)(buf + 4);
2032 *chanspec = le16_to_cpu(bi->chanspec);
2039 /* Use default channel for P2P */
2040 ch.chnum = BRCMF_P2P_TEMP_CHAN;
2041 ch.bw = BRCMU_CHAN_BW_20;
2042 p2p->cfg->d11inf.encchspec(&ch);
2043 *chanspec = ch.chspec;
2047 * Change a P2P Role.
2049 * @mac: MAC address of the BSS to change a role
2050 * Returns 0 if success.
2052 int brcmf_p2p_ifchange(struct brcmf_cfg80211_info *cfg,
2053 enum brcmf_fil_p2p_if_types if_type)
2055 struct brcmf_p2p_info *p2p = &cfg->p2p;
2056 struct brcmf_cfg80211_vif *vif;
2057 struct brcmf_fil_p2p_if_le if_request;
2061 brcmf_dbg(TRACE, "Enter\n");
2063 vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif;
2065 brcmf_err("vif for P2PAPI_BSSCFG_PRIMARY does not exist\n");
2068 brcmf_notify_escan_complete(cfg, vif->ifp, true, true);
2069 vif = p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif;
2071 brcmf_err("vif for P2PAPI_BSSCFG_CONNECTION does not exist\n");
2074 brcmf_set_mpc(vif->ifp, 0);
2076 /* In concurrency case, STA may be already associated in a particular */
2077 /* channel. so retrieve the current channel of primary interface and */
2078 /* then start the virtual interface on that. */
2079 brcmf_p2p_get_current_chanspec(p2p, &chanspec);
2081 if_request.type = cpu_to_le16((u16)if_type);
2082 if_request.chspec = cpu_to_le16(chanspec);
2083 memcpy(if_request.addr, p2p->int_addr, sizeof(if_request.addr));
2085 brcmf_cfg80211_arm_vif_event(cfg, vif);
2086 err = brcmf_fil_iovar_data_set(vif->ifp, "p2p_ifupd", &if_request,
2087 sizeof(if_request));
2089 brcmf_err("p2p_ifupd FAILED, err=%d\n", err);
2090 brcmf_cfg80211_arm_vif_event(cfg, NULL);
2093 err = brcmf_cfg80211_wait_vif_event_timeout(cfg, BRCMF_E_IF_CHANGE,
2094 msecs_to_jiffies(1500));
2095 brcmf_cfg80211_arm_vif_event(cfg, NULL);
2097 brcmf_err("No BRCMF_E_IF_CHANGE event received\n");
2101 err = brcmf_fil_cmd_int_set(vif->ifp, BRCMF_C_SET_SCB_TIMEOUT,
2102 BRCMF_SCB_TIMEOUT_VALUE);
2107 static int brcmf_p2p_request_p2p_if(struct brcmf_p2p_info *p2p,
2108 struct brcmf_if *ifp, u8 ea[ETH_ALEN],
2109 enum brcmf_fil_p2p_if_types iftype)
2111 struct brcmf_fil_p2p_if_le if_request;
2115 /* we need a default channel */
2116 brcmf_p2p_get_current_chanspec(p2p, &chanspec);
2118 /* fill the firmware request */
2119 memcpy(if_request.addr, ea, ETH_ALEN);
2120 if_request.type = cpu_to_le16((u16)iftype);
2121 if_request.chspec = cpu_to_le16(chanspec);
2123 err = brcmf_fil_iovar_data_set(ifp, "p2p_ifadd", &if_request,
2124 sizeof(if_request));
2131 static int brcmf_p2p_disable_p2p_if(struct brcmf_cfg80211_vif *vif)
2133 struct brcmf_cfg80211_info *cfg = wdev_to_cfg(&vif->wdev);
2134 struct net_device *pri_ndev = cfg_to_ndev(cfg);
2135 struct brcmf_if *ifp = netdev_priv(pri_ndev);
2136 u8 *addr = vif->wdev.netdev->dev_addr;
2138 return brcmf_fil_iovar_data_set(ifp, "p2p_ifdis", addr, ETH_ALEN);
2141 static int brcmf_p2p_release_p2p_if(struct brcmf_cfg80211_vif *vif)
2143 struct brcmf_cfg80211_info *cfg = wdev_to_cfg(&vif->wdev);
2144 struct net_device *pri_ndev = cfg_to_ndev(cfg);
2145 struct brcmf_if *ifp = netdev_priv(pri_ndev);
2146 u8 *addr = vif->wdev.netdev->dev_addr;
2148 return brcmf_fil_iovar_data_set(ifp, "p2p_ifdel", addr, ETH_ALEN);
2152 * brcmf_p2p_create_p2pdev() - create a P2P_DEVICE virtual interface.
2154 * @p2p: P2P specific data.
2155 * @wiphy: wiphy device of new interface.
2156 * @addr: mac address for this new interface.
2158 static struct wireless_dev *brcmf_p2p_create_p2pdev(struct brcmf_p2p_info *p2p,
2159 struct wiphy *wiphy,
2162 struct brcmf_cfg80211_vif *p2p_vif;
2163 struct brcmf_if *p2p_ifp;
2164 struct brcmf_if *pri_ifp;
2168 if (p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif)
2169 return ERR_PTR(-ENOSPC);
2171 p2p_vif = brcmf_alloc_vif(p2p->cfg, NL80211_IFTYPE_P2P_DEVICE,
2173 if (IS_ERR(p2p_vif)) {
2174 brcmf_err("could not create discovery vif\n");
2175 return (struct wireless_dev *)p2p_vif;
2178 pri_ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp;
2179 brcmf_p2p_generate_bss_mac(p2p, addr);
2180 brcmf_p2p_set_firmware(pri_ifp, p2p->dev_addr);
2182 brcmf_cfg80211_arm_vif_event(p2p->cfg, p2p_vif);
2184 /* Initialize P2P Discovery in the firmware */
2185 err = brcmf_fil_iovar_int_set(pri_ifp, "p2p_disc", 1);
2187 brcmf_err("set p2p_disc error\n");
2188 brcmf_cfg80211_arm_vif_event(p2p->cfg, NULL);
2192 /* wait for firmware event */
2193 err = brcmf_cfg80211_wait_vif_event_timeout(p2p->cfg, BRCMF_E_IF_ADD,
2194 msecs_to_jiffies(1500));
2195 brcmf_cfg80211_arm_vif_event(p2p->cfg, NULL);
2197 brcmf_err("timeout occurred\n");
2202 /* discovery interface created */
2203 p2p_ifp = p2p_vif->ifp;
2204 p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif = p2p_vif;
2205 memcpy(p2p_ifp->mac_addr, p2p->dev_addr, ETH_ALEN);
2206 memcpy(&p2p_vif->wdev.address, p2p->dev_addr, sizeof(p2p->dev_addr));
2208 /* verify bsscfg index for P2P discovery */
2209 err = brcmf_fil_iovar_int_get(pri_ifp, "p2p_dev", &bssidx);
2211 brcmf_err("retrieving discover bsscfg index failed\n");
2215 WARN_ON(p2p_ifp->bssidx != bssidx);
2217 init_completion(&p2p->send_af_done);
2218 INIT_WORK(&p2p->afx_hdl.afx_work, brcmf_p2p_afx_handler);
2219 init_completion(&p2p->afx_hdl.act_frm_scan);
2220 init_completion(&p2p->wait_next_af);
2222 return &p2p_vif->wdev;
2225 brcmf_free_vif(p2p->cfg, p2p_vif);
2226 return ERR_PTR(err);
2230 * brcmf_p2p_delete_p2pdev() - delete P2P_DEVICE virtual interface.
2232 * @vif: virtual interface object to delete.
2234 static void brcmf_p2p_delete_p2pdev(struct brcmf_cfg80211_info *cfg,
2235 struct brcmf_cfg80211_vif *vif)
2237 cfg80211_unregister_wdev(&vif->wdev);
2238 cfg->p2p.bss_idx[P2PAPI_BSSCFG_DEVICE].vif = NULL;
2239 brcmf_free_vif(cfg, vif);
2243 * brcmf_p2p_free_p2p_if() - free up net device related data.
2245 * @ndev: net device that needs to be freed.
2247 static void brcmf_p2p_free_p2p_if(struct net_device *ndev)
2249 struct brcmf_cfg80211_info *cfg;
2250 struct brcmf_cfg80211_vif *vif;
2251 struct brcmf_if *ifp;
2253 ifp = netdev_priv(ndev);
2254 cfg = ifp->drvr->config;
2257 brcmf_free_vif(cfg, vif);
2258 free_netdev(ifp->ndev);
2262 * brcmf_p2p_add_vif() - create a new P2P virtual interface.
2264 * @wiphy: wiphy device of new interface.
2265 * @name: name of the new interface.
2266 * @type: nl80211 interface type.
2268 * @params: contains mac address for P2P device.
2270 struct wireless_dev *brcmf_p2p_add_vif(struct wiphy *wiphy, const char *name,
2271 enum nl80211_iftype type, u32 *flags,
2272 struct vif_params *params)
2274 struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
2275 struct brcmf_if *ifp = netdev_priv(cfg_to_ndev(cfg));
2276 struct brcmf_cfg80211_vif *vif;
2277 enum brcmf_fil_p2p_if_types iftype;
2281 if (brcmf_cfg80211_vif_event_armed(cfg))
2282 return ERR_PTR(-EBUSY);
2284 brcmf_dbg(INFO, "adding vif \"%s\" (type=%d)\n", name, type);
2287 case NL80211_IFTYPE_P2P_CLIENT:
2288 iftype = BRCMF_FIL_P2P_IF_CLIENT;
2291 case NL80211_IFTYPE_P2P_GO:
2292 iftype = BRCMF_FIL_P2P_IF_GO;
2295 case NL80211_IFTYPE_P2P_DEVICE:
2296 return brcmf_p2p_create_p2pdev(&cfg->p2p, wiphy,
2299 return ERR_PTR(-EOPNOTSUPP);
2302 vif = brcmf_alloc_vif(cfg, type, false);
2304 return (struct wireless_dev *)vif;
2305 brcmf_cfg80211_arm_vif_event(cfg, vif);
2307 err = brcmf_p2p_request_p2p_if(&cfg->p2p, ifp, cfg->p2p.int_addr,
2310 brcmf_cfg80211_arm_vif_event(cfg, NULL);
2314 /* wait for firmware event */
2315 err = brcmf_cfg80211_wait_vif_event_timeout(cfg, BRCMF_E_IF_ADD,
2316 msecs_to_jiffies(1500));
2317 brcmf_cfg80211_arm_vif_event(cfg, NULL);
2319 brcmf_err("timeout occurred\n");
2324 /* interface created in firmware */
2327 brcmf_err("no if pointer provided\n");
2332 strncpy(ifp->ndev->name, name, sizeof(ifp->ndev->name) - 1);
2333 err = brcmf_net_attach(ifp, true);
2335 brcmf_err("Registering netdevice failed\n");
2338 /* override destructor */
2339 ifp->ndev->destructor = brcmf_p2p_free_p2p_if;
2341 cfg->p2p.bss_idx[P2PAPI_BSSCFG_CONNECTION].vif = vif;
2342 /* Disable firmware roaming for P2P interface */
2343 brcmf_fil_iovar_int_set(ifp, "roam_off", 1);
2344 if (iftype == BRCMF_FIL_P2P_IF_GO) {
2345 /* set station timeout for p2p */
2346 brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCB_TIMEOUT,
2347 BRCMF_SCB_TIMEOUT_VALUE);
2349 return &ifp->vif->wdev;
2352 brcmf_free_vif(cfg, vif);
2353 return ERR_PTR(err);
2357 * brcmf_p2p_del_vif() - delete a P2P virtual interface.
2359 * @wiphy: wiphy device of interface.
2360 * @wdev: wireless device of interface.
2362 * TODO: not yet supported.
2364 int brcmf_p2p_del_vif(struct wiphy *wiphy, struct wireless_dev *wdev)
2366 struct brcmf_cfg80211_info *cfg = wiphy_priv(wiphy);
2367 struct brcmf_p2p_info *p2p = &cfg->p2p;
2368 struct brcmf_cfg80211_vif *vif;
2369 unsigned long jiffie_timeout = msecs_to_jiffies(1500);
2370 bool wait_for_disable = false;
2373 brcmf_dbg(TRACE, "delete P2P vif\n");
2374 vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev);
2376 switch (vif->wdev.iftype) {
2377 case NL80211_IFTYPE_P2P_CLIENT:
2378 if (test_bit(BRCMF_VIF_STATUS_DISCONNECTING, &vif->sme_state))
2379 wait_for_disable = true;
2382 case NL80211_IFTYPE_P2P_GO:
2383 if (!brcmf_p2p_disable_p2p_if(vif))
2384 wait_for_disable = true;
2387 case NL80211_IFTYPE_P2P_DEVICE:
2388 brcmf_p2p_delete_p2pdev(cfg, vif);
2395 clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);
2396 brcmf_dbg(INFO, "P2P: GO_NEG_PHASE status cleared\n");
2398 if (wait_for_disable)
2399 wait_for_completion_timeout(&cfg->vif_disabled,
2400 msecs_to_jiffies(500));
2402 brcmf_vif_clear_mgmt_ies(vif);
2404 brcmf_cfg80211_arm_vif_event(cfg, vif);
2405 err = brcmf_p2p_release_p2p_if(vif);
2407 /* wait for firmware event */
2408 err = brcmf_cfg80211_wait_vif_event_timeout(cfg, BRCMF_E_IF_DEL,
2415 brcmf_cfg80211_arm_vif_event(cfg, NULL);
2416 p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif = NULL;
2421 int brcmf_p2p_start_device(struct wiphy *wiphy, struct wireless_dev *wdev)
2423 struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
2424 struct brcmf_p2p_info *p2p = &cfg->p2p;
2425 struct brcmf_cfg80211_vif *vif;
2428 vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev);
2429 mutex_lock(&cfg->usr_sync);
2430 err = brcmf_p2p_enable_discovery(p2p);
2432 set_bit(BRCMF_VIF_STATUS_READY, &vif->sme_state);
2433 mutex_unlock(&cfg->usr_sync);
2437 void brcmf_p2p_stop_device(struct wiphy *wiphy, struct wireless_dev *wdev)
2439 struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
2440 struct brcmf_p2p_info *p2p = &cfg->p2p;
2441 struct brcmf_cfg80211_vif *vif;
2443 vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev);
2444 mutex_lock(&cfg->usr_sync);
2445 (void)brcmf_p2p_deinit_discovery(p2p);
2446 brcmf_abort_scanning(cfg);
2447 clear_bit(BRCMF_VIF_STATUS_READY, &vif->sme_state);
2448 mutex_unlock(&cfg->usr_sync);