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 <linux/rtnetlink.h>
20 #include <net/cfg80211.h>
22 #include <brcmu_wifi.h>
23 #include <brcmu_utils.h>
28 #include "fwil_types.h"
32 /* parameters used for p2p escan */
33 #define P2PAPI_SCAN_NPROBES 1
34 #define P2PAPI_SCAN_DWELL_TIME_MS 80
35 #define P2PAPI_SCAN_SOCIAL_DWELL_TIME_MS 40
36 #define P2PAPI_SCAN_HOME_TIME_MS 60
37 #define P2PAPI_SCAN_NPROBS_TIME_MS 30
38 #define P2PAPI_SCAN_AF_SEARCH_DWELL_TIME_MS 100
39 #define WL_SCAN_CONNECT_DWELL_TIME_MS 200
40 #define WL_SCAN_JOIN_PROBE_INTERVAL_MS 20
42 #define BRCMF_P2P_WILDCARD_SSID "DIRECT-"
43 #define BRCMF_P2P_WILDCARD_SSID_LEN (sizeof(BRCMF_P2P_WILDCARD_SSID) - 1)
45 #define SOCIAL_CHAN_1 1
46 #define SOCIAL_CHAN_2 6
47 #define SOCIAL_CHAN_3 11
48 #define IS_P2P_SOCIAL_CHANNEL(channel) ((channel == SOCIAL_CHAN_1) || \
49 (channel == SOCIAL_CHAN_2) || \
50 (channel == SOCIAL_CHAN_3))
51 #define BRCMF_P2P_TEMP_CHAN SOCIAL_CHAN_3
52 #define SOCIAL_CHAN_CNT 3
53 #define AF_PEER_SEARCH_CNT 2
55 #define BRCMF_SCB_TIMEOUT_VALUE 20
57 #define P2P_VER 9 /* P2P version: 9=WiFi P2P v1.0 */
58 #define P2P_PUB_AF_CATEGORY 0x04
59 #define P2P_PUB_AF_ACTION 0x09
60 #define P2P_AF_CATEGORY 0x7f
61 #define P2P_OUI "\x50\x6F\x9A" /* P2P OUI */
62 #define P2P_OUI_LEN 3 /* P2P OUI length */
64 /* Action Frame Constants */
65 #define DOT11_ACTION_HDR_LEN 2 /* action frame category + action */
66 #define DOT11_ACTION_CAT_OFF 0 /* category offset */
67 #define DOT11_ACTION_ACT_OFF 1 /* action offset */
69 #define P2P_AF_DWELL_TIME 200
70 #define P2P_AF_MIN_DWELL_TIME 100
71 #define P2P_AF_MED_DWELL_TIME 400
72 #define P2P_AF_LONG_DWELL_TIME 1000
73 #define P2P_AF_TX_MAX_RETRY 1
74 #define P2P_AF_MAX_WAIT_TIME 2000
75 #define P2P_INVALID_CHANNEL -1
76 #define P2P_CHANNEL_SYNC_RETRY 5
77 #define P2P_AF_FRM_SCAN_MAX_WAIT 1500
78 #define P2P_DEFAULT_SLEEP_TIME_VSDB 200
80 /* WiFi P2P Public Action Frame OUI Subtypes */
81 #define P2P_PAF_GON_REQ 0 /* Group Owner Negotiation Req */
82 #define P2P_PAF_GON_RSP 1 /* Group Owner Negotiation Rsp */
83 #define P2P_PAF_GON_CONF 2 /* Group Owner Negotiation Confirm */
84 #define P2P_PAF_INVITE_REQ 3 /* P2P Invitation Request */
85 #define P2P_PAF_INVITE_RSP 4 /* P2P Invitation Response */
86 #define P2P_PAF_DEVDIS_REQ 5 /* Device Discoverability Request */
87 #define P2P_PAF_DEVDIS_RSP 6 /* Device Discoverability Response */
88 #define P2P_PAF_PROVDIS_REQ 7 /* Provision Discovery Request */
89 #define P2P_PAF_PROVDIS_RSP 8 /* Provision Discovery Response */
90 #define P2P_PAF_SUBTYPE_INVALID 255 /* Invalid Subtype */
92 /* WiFi P2P Action Frame OUI Subtypes */
93 #define P2P_AF_NOTICE_OF_ABSENCE 0 /* Notice of Absence */
94 #define P2P_AF_PRESENCE_REQ 1 /* P2P Presence Request */
95 #define P2P_AF_PRESENCE_RSP 2 /* P2P Presence Response */
96 #define P2P_AF_GO_DISC_REQ 3 /* GO Discoverability Request */
98 /* P2P Service Discovery related */
99 #define P2PSD_ACTION_CATEGORY 0x04 /* Public action frame */
100 #define P2PSD_ACTION_ID_GAS_IREQ 0x0a /* GAS Initial Request AF */
101 #define P2PSD_ACTION_ID_GAS_IRESP 0x0b /* GAS Initial Response AF */
102 #define P2PSD_ACTION_ID_GAS_CREQ 0x0c /* GAS Comback Request AF */
103 #define P2PSD_ACTION_ID_GAS_CRESP 0x0d /* GAS Comback Response AF */
106 * struct brcmf_p2p_disc_st_le - set discovery state in firmware.
108 * @state: requested discovery state (see enum brcmf_p2p_disc_state).
109 * @chspec: channel parameter for %WL_P2P_DISC_ST_LISTEN state.
110 * @dwell: dwell time in ms for %WL_P2P_DISC_ST_LISTEN state.
112 struct brcmf_p2p_disc_st_le
{
119 * enum brcmf_p2p_disc_state - P2P discovery state values
121 * @WL_P2P_DISC_ST_SCAN: P2P discovery with wildcard SSID and P2P IE.
122 * @WL_P2P_DISC_ST_LISTEN: P2P discovery off-channel for specified time.
123 * @WL_P2P_DISC_ST_SEARCH: P2P discovery with P2P wildcard SSID and P2P IE.
125 enum brcmf_p2p_disc_state
{
127 WL_P2P_DISC_ST_LISTEN
,
128 WL_P2P_DISC_ST_SEARCH
132 * struct brcmf_p2p_scan_le - P2P specific scan request.
134 * @type: type of scan method requested (values: 'E' or 'S').
135 * @reserved: reserved (ignored).
136 * @eparams: parameters used for type 'E'.
137 * @sparams: parameters used for type 'S'.
139 struct brcmf_p2p_scan_le
{
143 struct brcmf_escan_params_le eparams
;
144 struct brcmf_scan_params_le sparams
;
149 * struct brcmf_p2p_pub_act_frame - WiFi P2P Public Action Frame
151 * @category: P2P_PUB_AF_CATEGORY
152 * @action: P2P_PUB_AF_ACTION
154 * @oui_type: OUI type - P2P_VER
155 * @subtype: OUI subtype - P2P_TYPE_*
156 * @dialog_token: nonzero, identifies req/rsp transaction
157 * @elts[1]: Variable length information elements.
159 struct brcmf_p2p_pub_act_frame
{
170 * struct brcmf_p2p_action_frame - WiFi P2P Action Frame
172 * @category: P2P_AF_CATEGORY
173 * @OUI[3]: OUI - P2P_OUI
174 * @type: OUI Type - P2P_VER
175 * @subtype: OUI Subtype - P2P_AF_*
176 * @dialog_token: nonzero, identifies req/resp tranaction
177 * @elts[1]: Variable length information elements.
179 struct brcmf_p2p_action_frame
{
189 * struct brcmf_p2psd_gas_pub_act_frame - Wi-Fi GAS Public Action Frame
191 * @category: 0x04 Public Action Frame
192 * @action: 0x6c Advertisement Protocol
193 * @dialog_token: nonzero, identifies req/rsp transaction
194 * @query_data[1]: Query Data. SD gas ireq SD gas iresp
196 struct brcmf_p2psd_gas_pub_act_frame
{
204 * struct brcmf_config_af_params - Action Frame Parameters for tx.
206 * @mpc_onoff: To make sure to send successfully action frame, we have to
207 * turn off mpc 0: off, 1: on, (-1): do nothing
208 * @search_channel: 1: search peer's channel to send af
209 * extra_listen: keep the dwell time to get af response frame.
211 struct brcmf_config_af_params
{
218 * brcmf_p2p_is_pub_action() - true if p2p public type frame.
220 * @frame: action frame data.
221 * @frame_len: length of action frame data.
223 * Determine if action frame is p2p public action type
225 static bool brcmf_p2p_is_pub_action(void *frame
, u32 frame_len
)
227 struct brcmf_p2p_pub_act_frame
*pact_frm
;
232 pact_frm
= (struct brcmf_p2p_pub_act_frame
*)frame
;
233 if (frame_len
< sizeof(struct brcmf_p2p_pub_act_frame
) - 1)
236 if (pact_frm
->category
== P2P_PUB_AF_CATEGORY
&&
237 pact_frm
->action
== P2P_PUB_AF_ACTION
&&
238 pact_frm
->oui_type
== P2P_VER
&&
239 memcmp(pact_frm
->oui
, P2P_OUI
, P2P_OUI_LEN
) == 0)
246 * brcmf_p2p_is_p2p_action() - true if p2p action type frame.
248 * @frame: action frame data.
249 * @frame_len: length of action frame data.
251 * Determine if action frame is p2p action type
253 static bool brcmf_p2p_is_p2p_action(void *frame
, u32 frame_len
)
255 struct brcmf_p2p_action_frame
*act_frm
;
260 act_frm
= (struct brcmf_p2p_action_frame
*)frame
;
261 if (frame_len
< sizeof(struct brcmf_p2p_action_frame
) - 1)
264 if (act_frm
->category
== P2P_AF_CATEGORY
&&
265 act_frm
->type
== P2P_VER
&&
266 memcmp(act_frm
->oui
, P2P_OUI
, P2P_OUI_LEN
) == 0)
273 * brcmf_p2p_is_gas_action() - true if p2p gas action type frame.
275 * @frame: action frame data.
276 * @frame_len: length of action frame data.
278 * Determine if action frame is p2p gas action type
280 static bool brcmf_p2p_is_gas_action(void *frame
, u32 frame_len
)
282 struct brcmf_p2psd_gas_pub_act_frame
*sd_act_frm
;
287 sd_act_frm
= (struct brcmf_p2psd_gas_pub_act_frame
*)frame
;
288 if (frame_len
< sizeof(struct brcmf_p2psd_gas_pub_act_frame
) - 1)
291 if (sd_act_frm
->category
!= P2PSD_ACTION_CATEGORY
)
294 if (sd_act_frm
->action
== P2PSD_ACTION_ID_GAS_IREQ
||
295 sd_act_frm
->action
== P2PSD_ACTION_ID_GAS_IRESP
||
296 sd_act_frm
->action
== P2PSD_ACTION_ID_GAS_CREQ
||
297 sd_act_frm
->action
== P2PSD_ACTION_ID_GAS_CRESP
)
304 * brcmf_p2p_print_actframe() - debug print routine.
306 * @tx: Received or to be transmitted
307 * @frame: action frame data.
308 * @frame_len: length of action frame data.
310 * Print information about the p2p action frame
315 static void brcmf_p2p_print_actframe(bool tx
, void *frame
, u32 frame_len
)
317 struct brcmf_p2p_pub_act_frame
*pact_frm
;
318 struct brcmf_p2p_action_frame
*act_frm
;
319 struct brcmf_p2psd_gas_pub_act_frame
*sd_act_frm
;
321 if (!frame
|| frame_len
<= 2)
324 if (brcmf_p2p_is_pub_action(frame
, frame_len
)) {
325 pact_frm
= (struct brcmf_p2p_pub_act_frame
*)frame
;
326 switch (pact_frm
->subtype
) {
327 case P2P_PAF_GON_REQ
:
328 brcmf_dbg(TRACE
, "%s P2P Group Owner Negotiation Req Frame\n",
331 case P2P_PAF_GON_RSP
:
332 brcmf_dbg(TRACE
, "%s P2P Group Owner Negotiation Rsp Frame\n",
335 case P2P_PAF_GON_CONF
:
336 brcmf_dbg(TRACE
, "%s P2P Group Owner Negotiation Confirm Frame\n",
339 case P2P_PAF_INVITE_REQ
:
340 brcmf_dbg(TRACE
, "%s P2P Invitation Request Frame\n",
343 case P2P_PAF_INVITE_RSP
:
344 brcmf_dbg(TRACE
, "%s P2P Invitation Response Frame\n",
347 case P2P_PAF_DEVDIS_REQ
:
348 brcmf_dbg(TRACE
, "%s P2P Device Discoverability Request Frame\n",
351 case P2P_PAF_DEVDIS_RSP
:
352 brcmf_dbg(TRACE
, "%s P2P Device Discoverability Response Frame\n",
355 case P2P_PAF_PROVDIS_REQ
:
356 brcmf_dbg(TRACE
, "%s P2P Provision Discovery Request Frame\n",
359 case P2P_PAF_PROVDIS_RSP
:
360 brcmf_dbg(TRACE
, "%s P2P Provision Discovery Response Frame\n",
364 brcmf_dbg(TRACE
, "%s Unknown P2P Public Action Frame\n",
368 } else if (brcmf_p2p_is_p2p_action(frame
, frame_len
)) {
369 act_frm
= (struct brcmf_p2p_action_frame
*)frame
;
370 switch (act_frm
->subtype
) {
371 case P2P_AF_NOTICE_OF_ABSENCE
:
372 brcmf_dbg(TRACE
, "%s P2P Notice of Absence Frame\n",
375 case P2P_AF_PRESENCE_REQ
:
376 brcmf_dbg(TRACE
, "%s P2P Presence Request Frame\n",
379 case P2P_AF_PRESENCE_RSP
:
380 brcmf_dbg(TRACE
, "%s P2P Presence Response Frame\n",
383 case P2P_AF_GO_DISC_REQ
:
384 brcmf_dbg(TRACE
, "%s P2P Discoverability Request Frame\n",
388 brcmf_dbg(TRACE
, "%s Unknown P2P Action Frame\n",
392 } else if (brcmf_p2p_is_gas_action(frame
, frame_len
)) {
393 sd_act_frm
= (struct brcmf_p2psd_gas_pub_act_frame
*)frame
;
394 switch (sd_act_frm
->action
) {
395 case P2PSD_ACTION_ID_GAS_IREQ
:
396 brcmf_dbg(TRACE
, "%s P2P GAS Initial Request\n",
399 case P2PSD_ACTION_ID_GAS_IRESP
:
400 brcmf_dbg(TRACE
, "%s P2P GAS Initial Response\n",
403 case P2PSD_ACTION_ID_GAS_CREQ
:
404 brcmf_dbg(TRACE
, "%s P2P GAS Comback Request\n",
407 case P2PSD_ACTION_ID_GAS_CRESP
:
408 brcmf_dbg(TRACE
, "%s P2P GAS Comback Response\n",
412 brcmf_dbg(TRACE
, "%s Unknown P2P GAS Frame\n",
421 static void brcmf_p2p_print_actframe(bool tx
, void *frame
, u32 frame_len
)
429 * brcmf_p2p_set_firmware() - prepare firmware for peer-to-peer operation.
431 * @ifp: ifp to use for iovars (primary).
432 * @p2p_mac: mac address to configure for p2p_da_override
434 static int brcmf_p2p_set_firmware(struct brcmf_if
*ifp
, u8
*p2p_mac
)
438 brcmf_fil_cmd_int_set(ifp
, BRCMF_C_DOWN
, 1);
439 brcmf_fil_iovar_int_set(ifp
, "apsta", 1);
440 brcmf_fil_cmd_int_set(ifp
, BRCMF_C_UP
, 1);
442 /* In case of COB type, firmware has default mac address
443 * After Initializing firmware, we have to set current mac address to
444 * firmware for P2P device address. This must be done with discovery
447 brcmf_fil_iovar_int_set(ifp
, "p2p_disc", 0);
449 ret
= brcmf_fil_iovar_data_set(ifp
, "p2p_da_override", p2p_mac
,
452 brcmf_err("failed to update device address ret %d\n", ret
);
458 * brcmf_p2p_generate_bss_mac() - derive mac addresses for P2P.
460 * @p2p: P2P specific data.
461 * @dev_addr: optional device address.
463 * P2P needs mac addresses for P2P device and interface. If no device
464 * address it specified, these are derived from the primary net device, ie.
465 * the permanent ethernet address of the device.
467 static void brcmf_p2p_generate_bss_mac(struct brcmf_p2p_info
*p2p
, u8
*dev_addr
)
469 struct brcmf_if
*pri_ifp
= p2p
->bss_idx
[P2PAPI_BSSCFG_PRIMARY
].vif
->ifp
;
470 bool local_admin
= false;
472 if (!dev_addr
|| is_zero_ether_addr(dev_addr
)) {
473 dev_addr
= pri_ifp
->mac_addr
;
477 /* Generate the P2P Device Address. This consists of the device's
478 * primary MAC address with the locally administered bit set.
480 memcpy(p2p
->dev_addr
, dev_addr
, ETH_ALEN
);
482 p2p
->dev_addr
[0] |= 0x02;
484 /* Generate the P2P Interface Address. If the discovery and connection
485 * BSSCFGs need to simultaneously co-exist, then this address must be
486 * different from the P2P Device Address, but also locally administered.
488 memcpy(p2p
->int_addr
, p2p
->dev_addr
, ETH_ALEN
);
489 p2p
->int_addr
[0] |= 0x02;
490 p2p
->int_addr
[4] ^= 0x80;
494 * brcmf_p2p_scan_is_p2p_request() - is cfg80211 scan request a P2P scan.
496 * @request: the scan request as received from cfg80211.
498 * returns true if one of the ssids in the request matches the
499 * P2P wildcard ssid; otherwise returns false.
501 static bool brcmf_p2p_scan_is_p2p_request(struct cfg80211_scan_request
*request
)
503 struct cfg80211_ssid
*ssids
= request
->ssids
;
506 for (i
= 0; i
< request
->n_ssids
; i
++) {
507 if (ssids
[i
].ssid_len
!= BRCMF_P2P_WILDCARD_SSID_LEN
)
510 brcmf_dbg(INFO
, "comparing ssid \"%s\"", ssids
[i
].ssid
);
511 if (!memcmp(BRCMF_P2P_WILDCARD_SSID
, ssids
[i
].ssid
,
512 BRCMF_P2P_WILDCARD_SSID_LEN
))
519 * brcmf_p2p_set_discover_state - set discover state in firmware.
521 * @ifp: low-level interface object.
522 * @state: discover state to set.
523 * @chanspec: channel parameters (for state @WL_P2P_DISC_ST_LISTEN only).
524 * @listen_ms: duration to listen (for state @WL_P2P_DISC_ST_LISTEN only).
526 static s32
brcmf_p2p_set_discover_state(struct brcmf_if
*ifp
, u8 state
,
527 u16 chanspec
, u16 listen_ms
)
529 struct brcmf_p2p_disc_st_le discover_state
;
531 brcmf_dbg(TRACE
, "enter\n");
533 discover_state
.state
= state
;
534 discover_state
.chspec
= cpu_to_le16(chanspec
);
535 discover_state
.dwell
= cpu_to_le16(listen_ms
);
536 ret
= brcmf_fil_bsscfg_data_set(ifp
, "p2p_state", &discover_state
,
537 sizeof(discover_state
));
542 * brcmf_p2p_deinit_discovery() - disable P2P device discovery.
544 * @p2p: P2P specific data.
546 * Resets the discovery state and disables it in firmware.
548 static s32
brcmf_p2p_deinit_discovery(struct brcmf_p2p_info
*p2p
)
550 struct brcmf_cfg80211_vif
*vif
;
552 brcmf_dbg(TRACE
, "enter\n");
554 /* Set the discovery state to SCAN */
555 vif
= p2p
->bss_idx
[P2PAPI_BSSCFG_DEVICE
].vif
;
556 (void)brcmf_p2p_set_discover_state(vif
->ifp
, WL_P2P_DISC_ST_SCAN
, 0, 0);
558 /* Disable P2P discovery in the firmware */
559 vif
= p2p
->bss_idx
[P2PAPI_BSSCFG_PRIMARY
].vif
;
560 (void)brcmf_fil_iovar_int_set(vif
->ifp
, "p2p_disc", 0);
566 * brcmf_p2p_enable_discovery() - initialize and configure discovery.
568 * @p2p: P2P specific data.
570 * Initializes the discovery device and configure the virtual interface.
572 static int brcmf_p2p_enable_discovery(struct brcmf_p2p_info
*p2p
)
574 struct brcmf_cfg80211_vif
*vif
;
577 brcmf_dbg(TRACE
, "enter\n");
578 vif
= p2p
->bss_idx
[P2PAPI_BSSCFG_DEVICE
].vif
;
580 brcmf_err("P2P config device not available\n");
585 if (test_bit(BRCMF_P2P_STATUS_ENABLED
, &p2p
->status
)) {
586 brcmf_dbg(INFO
, "P2P config device already configured\n");
590 /* Re-initialize P2P Discovery in the firmware */
591 vif
= p2p
->bss_idx
[P2PAPI_BSSCFG_PRIMARY
].vif
;
592 ret
= brcmf_fil_iovar_int_set(vif
->ifp
, "p2p_disc", 1);
594 brcmf_err("set p2p_disc error\n");
597 vif
= p2p
->bss_idx
[P2PAPI_BSSCFG_DEVICE
].vif
;
598 ret
= brcmf_p2p_set_discover_state(vif
->ifp
, WL_P2P_DISC_ST_SCAN
, 0, 0);
600 brcmf_err("unable to set WL_P2P_DISC_ST_SCAN\n");
605 * Set wsec to any non-zero value in the discovery bsscfg
606 * to ensure our P2P probe responses have the privacy bit
607 * set in the 802.11 WPA IE. Some peer devices may not
608 * initiate WPS with us if this bit is not set.
610 ret
= brcmf_fil_bsscfg_int_set(vif
->ifp
, "wsec", AES_ENABLED
);
612 brcmf_err("wsec error %d\n", ret
);
616 set_bit(BRCMF_P2P_STATUS_ENABLED
, &p2p
->status
);
622 * brcmf_p2p_escan() - initiate a P2P scan.
624 * @p2p: P2P specific data.
625 * @num_chans: number of channels to scan.
626 * @chanspecs: channel parameters for @num_chans channels.
627 * @search_state: P2P discover state to use.
628 * @action: scan action to pass to firmware.
629 * @bss_type: type of P2P bss.
631 static s32
brcmf_p2p_escan(struct brcmf_p2p_info
*p2p
, u32 num_chans
,
632 u16 chanspecs
[], s32 search_state
, u16 action
,
633 enum p2p_bss_type bss_type
)
636 s32 memsize
= offsetof(struct brcmf_p2p_scan_le
,
637 eparams
.params_le
.channel_list
);
642 struct brcmf_cfg80211_vif
*vif
;
643 struct brcmf_p2p_scan_le
*p2p_params
;
644 struct brcmf_scan_params_le
*sparams
;
645 struct brcmf_ssid ssid
;
647 memsize
+= num_chans
* sizeof(__le16
);
648 memblk
= kzalloc(memsize
, GFP_KERNEL
);
652 vif
= p2p
->bss_idx
[bss_type
].vif
;
654 brcmf_err("no vif for bss type %d\n", bss_type
);
659 switch (search_state
) {
660 case WL_P2P_DISC_ST_SEARCH
:
662 * If we in SEARCH STATE, we don't need to set SSID explictly
663 * because dongle use P2P WILDCARD internally by default
667 memset(ssid
.SSID
, 0, sizeof(ssid
.SSID
));
669 case WL_P2P_DISC_ST_SCAN
:
671 * wpa_supplicant has p2p_find command with type social or
672 * progressive. For progressive, we need to set the ssid to
673 * P2P WILDCARD because we just do broadcast scan unless
676 ssid
.SSID_len
= BRCMF_P2P_WILDCARD_SSID_LEN
;
677 memcpy(ssid
.SSID
, BRCMF_P2P_WILDCARD_SSID
, ssid
.SSID_len
);
680 brcmf_err(" invalid search state %d\n", search_state
);
685 brcmf_p2p_set_discover_state(vif
->ifp
, search_state
, 0, 0);
688 * set p2p scan parameters.
690 p2p_params
= (struct brcmf_p2p_scan_le
*)memblk
;
691 p2p_params
->type
= 'E';
693 /* determine the scan engine parameters */
694 sparams
= &p2p_params
->eparams
.params_le
;
695 sparams
->bss_type
= DOT11_BSSTYPE_ANY
;
696 if (p2p
->cfg
->active_scan
)
697 sparams
->scan_type
= 0;
699 sparams
->scan_type
= 1;
701 eth_broadcast_addr(sparams
->bssid
);
703 memcpy(sparams
->ssid_le
.SSID
, ssid
.SSID
, ssid
.SSID_len
);
704 sparams
->ssid_le
.SSID_len
= cpu_to_le32(ssid
.SSID_len
);
705 sparams
->home_time
= cpu_to_le32(P2PAPI_SCAN_HOME_TIME_MS
);
708 * SOCIAL_CHAN_CNT + 1 takes care of the Progressive scan
709 * supported by the supplicant.
711 if (num_chans
== SOCIAL_CHAN_CNT
|| num_chans
== (SOCIAL_CHAN_CNT
+ 1))
712 active
= P2PAPI_SCAN_SOCIAL_DWELL_TIME_MS
;
713 else if (num_chans
== AF_PEER_SEARCH_CNT
)
714 active
= P2PAPI_SCAN_AF_SEARCH_DWELL_TIME_MS
;
715 else if (brcmf_get_vif_state_any(p2p
->cfg
, BRCMF_VIF_STATUS_CONNECTED
))
718 active
= P2PAPI_SCAN_DWELL_TIME_MS
;
720 /* Override scan params to find a peer for a connection */
721 if (num_chans
== 1) {
722 active
= WL_SCAN_CONNECT_DWELL_TIME_MS
;
723 /* WAR to sync with presence period of VSDB GO.
724 * send probe request more frequently
726 nprobes
= active
/ WL_SCAN_JOIN_PROBE_INTERVAL_MS
;
728 nprobes
= active
/ P2PAPI_SCAN_NPROBS_TIME_MS
;
734 brcmf_dbg(INFO
, "nprobes # %d, active_time %d\n", nprobes
, active
);
735 sparams
->active_time
= cpu_to_le32(active
);
736 sparams
->nprobes
= cpu_to_le32(nprobes
);
737 sparams
->passive_time
= cpu_to_le32(-1);
738 sparams
->channel_num
= cpu_to_le32(num_chans
&
739 BRCMF_SCAN_PARAMS_COUNT_MASK
);
740 for (i
= 0; i
< num_chans
; i
++)
741 sparams
->channel_list
[i
] = cpu_to_le16(chanspecs
[i
]);
743 /* set the escan specific parameters */
744 p2p_params
->eparams
.version
= cpu_to_le32(BRCMF_ESCAN_REQ_VERSION
);
745 p2p_params
->eparams
.action
= cpu_to_le16(action
);
746 p2p_params
->eparams
.sync_id
= cpu_to_le16(0x1234);
747 /* perform p2p scan on primary device */
748 ret
= brcmf_fil_bsscfg_data_set(vif
->ifp
, "p2p_scan", memblk
, memsize
);
750 set_bit(BRCMF_SCAN_STATUS_BUSY
, &p2p
->cfg
->scan_status
);
757 * brcmf_p2p_run_escan() - escan callback for peer-to-peer.
759 * @cfg: driver private data for cfg80211 interface.
760 * @ndev: net device for which scan is requested.
761 * @request: scan request from cfg80211.
762 * @action: scan action.
764 * Determines the P2P discovery state based to scan request parameters and
765 * validates the channels in the request.
767 static s32
brcmf_p2p_run_escan(struct brcmf_cfg80211_info
*cfg
,
768 struct brcmf_if
*ifp
,
769 struct cfg80211_scan_request
*request
,
772 struct brcmf_p2p_info
*p2p
= &cfg
->p2p
;
774 s32 search_state
= WL_P2P_DISC_ST_SCAN
;
775 struct brcmf_cfg80211_vif
*vif
;
776 struct net_device
*dev
= NULL
;
777 int i
, num_nodfs
= 0;
780 brcmf_dbg(TRACE
, "enter\n");
787 if (request
->n_channels
) {
788 chanspecs
= kcalloc(request
->n_channels
, sizeof(*chanspecs
),
794 vif
= p2p
->bss_idx
[P2PAPI_BSSCFG_CONNECTION
].vif
;
796 dev
= vif
->wdev
.netdev
;
797 if (request
->n_channels
== 3 &&
798 request
->channels
[0]->hw_value
== SOCIAL_CHAN_1
&&
799 request
->channels
[1]->hw_value
== SOCIAL_CHAN_2
&&
800 request
->channels
[2]->hw_value
== SOCIAL_CHAN_3
) {
801 /* SOCIAL CHANNELS 1, 6, 11 */
802 search_state
= WL_P2P_DISC_ST_SEARCH
;
803 brcmf_dbg(INFO
, "P2P SEARCH PHASE START\n");
804 } else if (dev
!= NULL
&&
805 vif
->wdev
.iftype
== NL80211_IFTYPE_P2P_GO
) {
806 /* If you are already a GO, then do SEARCH only */
807 brcmf_dbg(INFO
, "Already a GO. Do SEARCH Only\n");
808 search_state
= WL_P2P_DISC_ST_SEARCH
;
810 brcmf_dbg(INFO
, "P2P SCAN STATE START\n");
814 * no P2P scanning on passive or DFS channels.
816 for (i
= 0; i
< request
->n_channels
; i
++) {
817 struct ieee80211_channel
*chan
= request
->channels
[i
];
819 if (chan
->flags
& (IEEE80211_CHAN_RADAR
|
820 IEEE80211_CHAN_NO_IR
))
823 chanspecs
[i
] = channel_to_chanspec(&p2p
->cfg
->d11inf
,
825 brcmf_dbg(INFO
, "%d: chan=%d, channel spec=%x\n",
826 num_nodfs
, chan
->hw_value
, chanspecs
[i
]);
829 err
= brcmf_p2p_escan(p2p
, num_nodfs
, chanspecs
, search_state
,
830 action
, P2PAPI_BSSCFG_DEVICE
);
835 brcmf_err("error (%d)\n", err
);
841 * brcmf_p2p_find_listen_channel() - find listen channel in ie string.
843 * @ie: string of information elements.
844 * @ie_len: length of string.
846 * Scan ie for p2p ie and look for attribute 6 channel. If available determine
847 * channel and return it.
849 static s32
brcmf_p2p_find_listen_channel(const u8
*ie
, u32 ie_len
)
855 err
= cfg80211_get_p2p_attr(ie
, ie_len
,
856 IEEE80211_P2P_ATTR_LISTEN_CHANNEL
,
857 channel_ie
, sizeof(channel_ie
));
861 /* listen channel subel length format: */
862 /* 3(country) + 1(op. class) + 1(chan num) */
863 listen_channel
= (s32
)channel_ie
[3 + 1];
865 if (listen_channel
== SOCIAL_CHAN_1
||
866 listen_channel
== SOCIAL_CHAN_2
||
867 listen_channel
== SOCIAL_CHAN_3
) {
868 brcmf_dbg(INFO
, "Found my Listen Channel %d\n", listen_channel
);
869 return listen_channel
;
877 * brcmf_p2p_scan_prep() - prepare scan based on request.
879 * @wiphy: wiphy device.
880 * @request: scan request from cfg80211.
881 * @vif: vif on which scan request is to be executed.
883 * Prepare the scan appropriately for type of scan requested. Overrides the
884 * escan .run() callback for peer-to-peer scanning.
886 int brcmf_p2p_scan_prep(struct wiphy
*wiphy
,
887 struct cfg80211_scan_request
*request
,
888 struct brcmf_cfg80211_vif
*vif
)
890 struct brcmf_cfg80211_info
*cfg
= wiphy_to_cfg(wiphy
);
891 struct brcmf_p2p_info
*p2p
= &cfg
->p2p
;
894 if (brcmf_p2p_scan_is_p2p_request(request
)) {
895 /* find my listen channel */
896 err
= brcmf_p2p_find_listen_channel(request
->ie
,
901 p2p
->afx_hdl
.my_listen_chan
= err
;
903 clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE
, &p2p
->status
);
904 brcmf_dbg(INFO
, "P2P: GO_NEG_PHASE status cleared\n");
906 err
= brcmf_p2p_enable_discovery(p2p
);
910 vif
= p2p
->bss_idx
[P2PAPI_BSSCFG_DEVICE
].vif
;
912 /* override .run_escan() callback. */
913 cfg
->escan_info
.run
= brcmf_p2p_run_escan
;
915 err
= brcmf_vif_set_mgmt_ie(vif
, BRCMF_VNDR_IE_PRBREQ_FLAG
,
916 request
->ie
, request
->ie_len
);
922 * brcmf_p2p_discover_listen() - set firmware to discover listen state.
925 * @channel: channel nr for discover listen.
926 * @duration: time in ms to stay on channel.
930 brcmf_p2p_discover_listen(struct brcmf_p2p_info
*p2p
, u16 channel
, u32 duration
)
932 struct brcmf_cfg80211_vif
*vif
;
933 struct brcmu_chan ch
;
936 vif
= p2p
->bss_idx
[P2PAPI_BSSCFG_DEVICE
].vif
;
938 brcmf_err("Discovery is not set, so we have nothing to do\n");
943 if (test_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN
, &p2p
->status
)) {
944 brcmf_err("Previous LISTEN is not completed yet\n");
945 /* WAR: prevent cookie mismatch in wpa_supplicant return OK */
950 ch
.bw
= BRCMU_CHAN_BW_20
;
951 p2p
->cfg
->d11inf
.encchspec(&ch
);
952 err
= brcmf_p2p_set_discover_state(vif
->ifp
, WL_P2P_DISC_ST_LISTEN
,
953 ch
.chspec
, (u16
)duration
);
955 set_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN
, &p2p
->status
);
956 p2p
->remain_on_channel_cookie
++;
964 * brcmf_p2p_remain_on_channel() - put device on channel and stay there.
966 * @wiphy: wiphy device.
967 * @channel: channel to stay on.
968 * @duration: time in ms to remain on channel.
971 int brcmf_p2p_remain_on_channel(struct wiphy
*wiphy
, struct wireless_dev
*wdev
,
972 struct ieee80211_channel
*channel
,
973 unsigned int duration
, u64
*cookie
)
975 struct brcmf_cfg80211_info
*cfg
= wiphy_to_cfg(wiphy
);
976 struct brcmf_p2p_info
*p2p
= &cfg
->p2p
;
980 channel_nr
= ieee80211_frequency_to_channel(channel
->center_freq
);
981 brcmf_dbg(TRACE
, "Enter, channel: %d, duration ms (%d)\n", channel_nr
,
984 err
= brcmf_p2p_enable_discovery(p2p
);
987 err
= brcmf_p2p_discover_listen(p2p
, channel_nr
, duration
);
991 memcpy(&p2p
->remain_on_channel
, channel
, sizeof(*channel
));
992 *cookie
= p2p
->remain_on_channel_cookie
;
993 cfg80211_ready_on_channel(wdev
, *cookie
, channel
, duration
, GFP_KERNEL
);
1001 * brcmf_p2p_notify_listen_complete() - p2p listen has completed.
1003 * @ifp: interfac control.
1004 * @e: event message. Not used, to make it usable for fweh event dispatcher.
1005 * @data: payload of message. Not used.
1008 int brcmf_p2p_notify_listen_complete(struct brcmf_if
*ifp
,
1009 const struct brcmf_event_msg
*e
,
1012 struct brcmf_cfg80211_info
*cfg
= ifp
->drvr
->config
;
1013 struct brcmf_p2p_info
*p2p
= &cfg
->p2p
;
1015 brcmf_dbg(TRACE
, "Enter\n");
1016 if (test_and_clear_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN
,
1018 if (test_and_clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN
,
1020 clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME
,
1022 brcmf_dbg(INFO
, "Listen DONE, wake up wait_next_af\n");
1023 complete(&p2p
->wait_next_af
);
1026 cfg80211_remain_on_channel_expired(&ifp
->vif
->wdev
,
1027 p2p
->remain_on_channel_cookie
,
1028 &p2p
->remain_on_channel
,
1036 * brcmf_p2p_cancel_remain_on_channel() - cancel p2p listen state.
1038 * @ifp: interfac control.
1041 void brcmf_p2p_cancel_remain_on_channel(struct brcmf_if
*ifp
)
1045 brcmf_p2p_set_discover_state(ifp
, WL_P2P_DISC_ST_SCAN
, 0, 0);
1046 brcmf_p2p_notify_listen_complete(ifp
, NULL
, NULL
);
1051 * brcmf_p2p_act_frm_search() - search function for action frame.
1054 * channel: channel on which action frame is to be trasmitted.
1056 * search function to reach at common channel to send action frame. When
1057 * channel is 0 then all social channels will be used to send af
1059 static s32
brcmf_p2p_act_frm_search(struct brcmf_p2p_info
*p2p
, u16 channel
)
1063 u16
*default_chan_list
;
1065 struct brcmu_chan ch
;
1067 brcmf_dbg(TRACE
, "Enter\n");
1070 channel_cnt
= AF_PEER_SEARCH_CNT
;
1072 channel_cnt
= SOCIAL_CHAN_CNT
;
1073 default_chan_list
= kzalloc(channel_cnt
* sizeof(*default_chan_list
),
1075 if (default_chan_list
== NULL
) {
1076 brcmf_err("channel list allocation failed\n");
1080 ch
.bw
= BRCMU_CHAN_BW_20
;
1083 p2p
->cfg
->d11inf
.encchspec(&ch
);
1084 /* insert same channel to the chan_list */
1085 for (i
= 0; i
< channel_cnt
; i
++)
1086 default_chan_list
[i
] = ch
.chspec
;
1088 ch
.chnum
= SOCIAL_CHAN_1
;
1089 p2p
->cfg
->d11inf
.encchspec(&ch
);
1090 default_chan_list
[0] = ch
.chspec
;
1091 ch
.chnum
= SOCIAL_CHAN_2
;
1092 p2p
->cfg
->d11inf
.encchspec(&ch
);
1093 default_chan_list
[1] = ch
.chspec
;
1094 ch
.chnum
= SOCIAL_CHAN_3
;
1095 p2p
->cfg
->d11inf
.encchspec(&ch
);
1096 default_chan_list
[2] = ch
.chspec
;
1098 err
= brcmf_p2p_escan(p2p
, channel_cnt
, default_chan_list
,
1099 WL_P2P_DISC_ST_SEARCH
, WL_ESCAN_ACTION_START
,
1100 P2PAPI_BSSCFG_DEVICE
);
1101 kfree(default_chan_list
);
1108 * brcmf_p2p_afx_handler() - afx worker thread.
1113 static void brcmf_p2p_afx_handler(struct work_struct
*work
)
1115 struct afx_hdl
*afx_hdl
= container_of(work
, struct afx_hdl
, afx_work
);
1116 struct brcmf_p2p_info
*p2p
= container_of(afx_hdl
,
1117 struct brcmf_p2p_info
,
1121 if (!afx_hdl
->is_active
)
1124 if (afx_hdl
->is_listen
&& afx_hdl
->my_listen_chan
)
1126 err
= brcmf_p2p_discover_listen(p2p
, afx_hdl
->my_listen_chan
,
1127 100 * (1 + prandom_u32() % 3));
1129 err
= brcmf_p2p_act_frm_search(p2p
, afx_hdl
->peer_listen_chan
);
1132 brcmf_err("ERROR occurred! value is (%d)\n", err
);
1133 if (test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL
,
1135 complete(&afx_hdl
->act_frm_scan
);
1141 * brcmf_p2p_af_searching_channel() - search channel.
1143 * @p2p: p2p device info struct.
1146 static s32
brcmf_p2p_af_searching_channel(struct brcmf_p2p_info
*p2p
)
1148 struct afx_hdl
*afx_hdl
= &p2p
->afx_hdl
;
1149 struct brcmf_cfg80211_vif
*pri_vif
;
1150 unsigned long duration
;
1153 brcmf_dbg(TRACE
, "Enter\n");
1155 pri_vif
= p2p
->bss_idx
[P2PAPI_BSSCFG_PRIMARY
].vif
;
1157 reinit_completion(&afx_hdl
->act_frm_scan
);
1158 set_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL
, &p2p
->status
);
1159 afx_hdl
->is_active
= true;
1160 afx_hdl
->peer_chan
= P2P_INVALID_CHANNEL
;
1162 /* Loop to wait until we find a peer's channel or the
1163 * pending action frame tx is cancelled.
1166 duration
= msecs_to_jiffies(P2P_AF_FRM_SCAN_MAX_WAIT
);
1167 while ((retry
< P2P_CHANNEL_SYNC_RETRY
) &&
1168 (afx_hdl
->peer_chan
== P2P_INVALID_CHANNEL
)) {
1169 afx_hdl
->is_listen
= false;
1170 brcmf_dbg(TRACE
, "Scheduling action frame for sending.. (%d)\n",
1172 /* search peer on peer's listen channel */
1173 schedule_work(&afx_hdl
->afx_work
);
1174 wait_for_completion_timeout(&afx_hdl
->act_frm_scan
, duration
);
1175 if ((afx_hdl
->peer_chan
!= P2P_INVALID_CHANNEL
) ||
1176 (!test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL
,
1180 if (afx_hdl
->my_listen_chan
) {
1181 brcmf_dbg(TRACE
, "Scheduling listen peer, channel=%d\n",
1182 afx_hdl
->my_listen_chan
);
1183 /* listen on my listen channel */
1184 afx_hdl
->is_listen
= true;
1185 schedule_work(&afx_hdl
->afx_work
);
1186 wait_for_completion_timeout(&afx_hdl
->act_frm_scan
,
1189 if ((afx_hdl
->peer_chan
!= P2P_INVALID_CHANNEL
) ||
1190 (!test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL
,
1195 /* if sta is connected or connecting, sleep for a while before
1196 * retry af tx or finding a peer
1198 if (test_bit(BRCMF_VIF_STATUS_CONNECTED
, &pri_vif
->sme_state
) ||
1199 test_bit(BRCMF_VIF_STATUS_CONNECTING
, &pri_vif
->sme_state
))
1200 msleep(P2P_DEFAULT_SLEEP_TIME_VSDB
);
1203 brcmf_dbg(TRACE
, "Completed search/listen peer_chan=%d\n",
1204 afx_hdl
->peer_chan
);
1205 afx_hdl
->is_active
= false;
1207 clear_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL
, &p2p
->status
);
1209 return afx_hdl
->peer_chan
;
1214 * brcmf_p2p_scan_finding_common_channel() - was escan used for finding channel
1216 * @cfg: common configuration struct.
1217 * @bi: bss info struct, result from scan.
1220 bool brcmf_p2p_scan_finding_common_channel(struct brcmf_cfg80211_info
*cfg
,
1221 struct brcmf_bss_info_le
*bi
)
1224 struct brcmf_p2p_info
*p2p
= &cfg
->p2p
;
1225 struct afx_hdl
*afx_hdl
= &p2p
->afx_hdl
;
1226 struct brcmu_chan ch
;
1229 u8 p2p_dev_addr
[ETH_ALEN
];
1231 if (!test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL
, &p2p
->status
))
1235 brcmf_dbg(TRACE
, "ACTION FRAME SCAN Done\n");
1236 if (afx_hdl
->peer_chan
== P2P_INVALID_CHANNEL
)
1237 complete(&afx_hdl
->act_frm_scan
);
1241 ie
= ((u8
*)bi
) + le16_to_cpu(bi
->ie_offset
);
1242 memset(p2p_dev_addr
, 0, sizeof(p2p_dev_addr
));
1243 err
= cfg80211_get_p2p_attr(ie
, le32_to_cpu(bi
->ie_length
),
1244 IEEE80211_P2P_ATTR_DEVICE_INFO
,
1245 p2p_dev_addr
, sizeof(p2p_dev_addr
));
1247 err
= cfg80211_get_p2p_attr(ie
, le32_to_cpu(bi
->ie_length
),
1248 IEEE80211_P2P_ATTR_DEVICE_ID
,
1249 p2p_dev_addr
, sizeof(p2p_dev_addr
));
1251 (ether_addr_equal(p2p_dev_addr
, afx_hdl
->tx_dst_addr
))) {
1253 ch
.chspec
= le16_to_cpu(bi
->chanspec
);
1254 cfg
->d11inf
.decchspec(&ch
);
1255 bi
->ctl_ch
= ch
.chnum
;
1257 afx_hdl
->peer_chan
= bi
->ctl_ch
;
1258 brcmf_dbg(TRACE
, "ACTION FRAME SCAN : Peer %pM found, channel : %d\n",
1259 afx_hdl
->tx_dst_addr
, afx_hdl
->peer_chan
);
1260 complete(&afx_hdl
->act_frm_scan
);
1266 * brcmf_p2p_stop_wait_next_action_frame() - finish scan if af tx complete.
1268 * @cfg: common configuration struct.
1272 brcmf_p2p_stop_wait_next_action_frame(struct brcmf_cfg80211_info
*cfg
)
1274 struct brcmf_p2p_info
*p2p
= &cfg
->p2p
;
1275 struct brcmf_if
*ifp
= cfg
->escan_info
.ifp
;
1277 if (test_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME
, &p2p
->status
) &&
1278 (test_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED
, &p2p
->status
) ||
1279 test_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK
, &p2p
->status
))) {
1280 brcmf_dbg(TRACE
, "*** Wake UP ** abort actframe iovar\n");
1281 /* if channel is not zero, "actfame" uses off channel scan.
1282 * So abort scan for off channel completion.
1284 if (p2p
->af_sent_channel
)
1285 brcmf_notify_escan_complete(cfg
, ifp
, true, true);
1286 } else if (test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN
,
1288 brcmf_dbg(TRACE
, "*** Wake UP ** abort listen for next af frame\n");
1289 /* So abort scan to cancel listen */
1290 brcmf_notify_escan_complete(cfg
, ifp
, true, true);
1296 * brcmf_p2p_gon_req_collision() - Check if go negotiaton collission
1298 * @p2p: p2p device info struct.
1300 * return true if recevied action frame is to be dropped.
1303 brcmf_p2p_gon_req_collision(struct brcmf_p2p_info
*p2p
, u8
*mac
)
1305 struct brcmf_cfg80211_info
*cfg
= p2p
->cfg
;
1306 struct brcmf_if
*ifp
;
1308 brcmf_dbg(TRACE
, "Enter\n");
1310 if (!test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME
, &p2p
->status
) ||
1311 !p2p
->gon_req_action
)
1314 brcmf_dbg(TRACE
, "GO Negotiation Request COLLISION !!!\n");
1315 /* if sa(peer) addr is less than da(my) addr, then this device
1316 * process peer's gon request and block to send gon req.
1317 * if not (sa addr > da addr),
1318 * this device will process gon request and drop gon req of peer.
1320 ifp
= p2p
->bss_idx
[P2PAPI_BSSCFG_DEVICE
].vif
->ifp
;
1321 if (memcmp(mac
, ifp
->mac_addr
, ETH_ALEN
) < 0) {
1322 brcmf_dbg(INFO
, "Block transmit gon req !!!\n");
1323 p2p
->block_gon_req_tx
= true;
1324 /* if we are finding a common channel for sending af,
1325 * do not scan more to block to send current gon req
1327 if (test_and_clear_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL
,
1329 complete(&p2p
->afx_hdl
.act_frm_scan
);
1330 if (test_and_clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME
,
1332 brcmf_p2p_stop_wait_next_action_frame(cfg
);
1336 /* drop gon request of peer to process gon request by this device. */
1337 brcmf_dbg(INFO
, "Drop received gon req !!!\n");
1344 * brcmf_p2p_notify_action_frame_rx() - received action frame.
1346 * @ifp: interfac control.
1347 * @e: event message. Not used, to make it usable for fweh event dispatcher.
1348 * @data: payload of message, containing action frame data.
1351 int brcmf_p2p_notify_action_frame_rx(struct brcmf_if
*ifp
,
1352 const struct brcmf_event_msg
*e
,
1355 struct brcmf_cfg80211_info
*cfg
= ifp
->drvr
->config
;
1356 struct brcmf_p2p_info
*p2p
= &cfg
->p2p
;
1357 struct afx_hdl
*afx_hdl
= &p2p
->afx_hdl
;
1358 struct wireless_dev
*wdev
;
1359 u32 mgmt_frame_len
= e
->datalen
- sizeof(struct brcmf_rx_mgmt_data
);
1360 struct brcmf_rx_mgmt_data
*rxframe
= (struct brcmf_rx_mgmt_data
*)data
;
1361 u8
*frame
= (u8
*)(rxframe
+ 1);
1362 struct brcmf_p2p_pub_act_frame
*act_frm
;
1363 struct brcmf_p2psd_gas_pub_act_frame
*sd_act_frm
;
1364 struct brcmu_chan ch
;
1365 struct ieee80211_mgmt
*mgmt_frame
;
1370 ch
.chspec
= be16_to_cpu(rxframe
->chanspec
);
1371 cfg
->d11inf
.decchspec(&ch
);
1372 /* Check if wpa_supplicant has registered for this frame */
1373 brcmf_dbg(INFO
, "ifp->vif->mgmt_rx_reg %04x\n", ifp
->vif
->mgmt_rx_reg
);
1374 mgmt_type
= (IEEE80211_STYPE_ACTION
& IEEE80211_FCTL_STYPE
) >> 4;
1375 if ((ifp
->vif
->mgmt_rx_reg
& BIT(mgmt_type
)) == 0)
1378 brcmf_p2p_print_actframe(false, frame
, mgmt_frame_len
);
1380 action
= P2P_PAF_SUBTYPE_INVALID
;
1381 if (brcmf_p2p_is_pub_action(frame
, mgmt_frame_len
)) {
1382 act_frm
= (struct brcmf_p2p_pub_act_frame
*)frame
;
1383 action
= act_frm
->subtype
;
1384 if ((action
== P2P_PAF_GON_REQ
) &&
1385 (brcmf_p2p_gon_req_collision(p2p
, (u8
*)e
->addr
))) {
1386 if (test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL
,
1388 (ether_addr_equal(afx_hdl
->tx_dst_addr
, e
->addr
))) {
1389 afx_hdl
->peer_chan
= ch
.chnum
;
1390 brcmf_dbg(INFO
, "GON request: Peer found, channel=%d\n",
1391 afx_hdl
->peer_chan
);
1392 complete(&afx_hdl
->act_frm_scan
);
1396 /* After complete GO Negotiation, roll back to mpc mode */
1397 if ((action
== P2P_PAF_GON_CONF
) ||
1398 (action
== P2P_PAF_PROVDIS_RSP
))
1399 brcmf_set_mpc(ifp
, 1);
1400 if (action
== P2P_PAF_GON_CONF
) {
1401 brcmf_dbg(TRACE
, "P2P: GO_NEG_PHASE status cleared\n");
1402 clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE
, &p2p
->status
);
1404 } else if (brcmf_p2p_is_gas_action(frame
, mgmt_frame_len
)) {
1405 sd_act_frm
= (struct brcmf_p2psd_gas_pub_act_frame
*)frame
;
1406 action
= sd_act_frm
->action
;
1409 if (test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME
, &p2p
->status
) &&
1410 (p2p
->next_af_subtype
== action
)) {
1411 brcmf_dbg(TRACE
, "We got a right next frame! (%d)\n", action
);
1412 clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME
,
1414 /* Stop waiting for next AF. */
1415 brcmf_p2p_stop_wait_next_action_frame(cfg
);
1418 mgmt_frame
= kzalloc(offsetof(struct ieee80211_mgmt
, u
) +
1419 mgmt_frame_len
, GFP_KERNEL
);
1421 brcmf_err("No memory available for action frame\n");
1424 memcpy(mgmt_frame
->da
, ifp
->mac_addr
, ETH_ALEN
);
1425 brcmf_fil_cmd_data_get(ifp
, BRCMF_C_GET_BSSID
, mgmt_frame
->bssid
,
1427 memcpy(mgmt_frame
->sa
, e
->addr
, ETH_ALEN
);
1428 mgmt_frame
->frame_control
= cpu_to_le16(IEEE80211_STYPE_ACTION
);
1429 memcpy(&mgmt_frame
->u
, frame
, mgmt_frame_len
);
1430 mgmt_frame_len
+= offsetof(struct ieee80211_mgmt
, u
);
1432 freq
= ieee80211_channel_to_frequency(ch
.chnum
,
1433 ch
.band
== BRCMU_CHAN_BAND_2G
?
1434 IEEE80211_BAND_2GHZ
:
1435 IEEE80211_BAND_5GHZ
);
1437 wdev
= &ifp
->vif
->wdev
;
1438 cfg80211_rx_mgmt(wdev
, freq
, 0, (u8
*)mgmt_frame
, mgmt_frame_len
, 0);
1446 * brcmf_p2p_notify_action_tx_complete() - transmit action frame complete
1448 * @ifp: interfac control.
1449 * @e: event message. Not used, to make it usable for fweh event dispatcher.
1453 int brcmf_p2p_notify_action_tx_complete(struct brcmf_if
*ifp
,
1454 const struct brcmf_event_msg
*e
,
1457 struct brcmf_cfg80211_info
*cfg
= ifp
->drvr
->config
;
1458 struct brcmf_p2p_info
*p2p
= &cfg
->p2p
;
1460 brcmf_dbg(INFO
, "Enter: event %s, status=%d\n",
1461 e
->event_code
== BRCMF_E_ACTION_FRAME_OFF_CHAN_COMPLETE
?
1462 "ACTION_FRAME_OFF_CHAN_COMPLETE" : "ACTION_FRAME_COMPLETE",
1465 if (!test_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME
, &p2p
->status
))
1468 if (e
->event_code
== BRCMF_E_ACTION_FRAME_COMPLETE
) {
1469 if (e
->status
== BRCMF_E_STATUS_SUCCESS
)
1470 set_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED
,
1473 set_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK
, &p2p
->status
);
1474 /* If there is no ack, we don't need to wait for
1475 * WLC_E_ACTION_FRAME_OFFCHAN_COMPLETE event
1477 brcmf_p2p_stop_wait_next_action_frame(cfg
);
1481 complete(&p2p
->send_af_done
);
1488 * brcmf_p2p_tx_action_frame() - send action frame over fil.
1490 * @p2p: p2p info struct for vif.
1491 * @af_params: action frame data/info.
1493 * Send an action frame immediately without doing channel synchronization.
1495 * This function waits for a completion event before returning.
1496 * The WLC_E_ACTION_FRAME_COMPLETE event will be received when the action
1497 * frame is transmitted.
1499 static s32
brcmf_p2p_tx_action_frame(struct brcmf_p2p_info
*p2p
,
1500 struct brcmf_fil_af_params_le
*af_params
)
1502 struct brcmf_cfg80211_vif
*vif
;
1506 brcmf_dbg(TRACE
, "Enter\n");
1508 reinit_completion(&p2p
->send_af_done
);
1509 clear_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED
, &p2p
->status
);
1510 clear_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK
, &p2p
->status
);
1512 vif
= p2p
->bss_idx
[P2PAPI_BSSCFG_DEVICE
].vif
;
1513 err
= brcmf_fil_bsscfg_data_set(vif
->ifp
, "actframe", af_params
,
1514 sizeof(*af_params
));
1516 brcmf_err(" sending action frame has failed\n");
1520 p2p
->af_sent_channel
= le32_to_cpu(af_params
->channel
);
1521 p2p
->af_tx_sent_jiffies
= jiffies
;
1523 timeout
= wait_for_completion_timeout(&p2p
->send_af_done
,
1524 msecs_to_jiffies(P2P_AF_MAX_WAIT_TIME
));
1526 if (test_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED
, &p2p
->status
)) {
1527 brcmf_dbg(TRACE
, "TX action frame operation is success\n");
1530 brcmf_dbg(TRACE
, "TX action frame operation has failed\n");
1532 /* clear status bit for action tx */
1533 clear_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED
, &p2p
->status
);
1534 clear_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK
, &p2p
->status
);
1542 * brcmf_p2p_pub_af_tx() - public action frame tx routine.
1544 * @cfg: driver private data for cfg80211 interface.
1545 * @af_params: action frame data/info.
1546 * @config_af_params: configuration data for action frame.
1548 * routine which transmits ation frame public type.
1550 static s32
brcmf_p2p_pub_af_tx(struct brcmf_cfg80211_info
*cfg
,
1551 struct brcmf_fil_af_params_le
*af_params
,
1552 struct brcmf_config_af_params
*config_af_params
)
1554 struct brcmf_p2p_info
*p2p
= &cfg
->p2p
;
1555 struct brcmf_fil_action_frame_le
*action_frame
;
1556 struct brcmf_p2p_pub_act_frame
*act_frm
;
1560 action_frame
= &af_params
->action_frame
;
1561 act_frm
= (struct brcmf_p2p_pub_act_frame
*)(action_frame
->data
);
1563 config_af_params
->extra_listen
= true;
1565 switch (act_frm
->subtype
) {
1566 case P2P_PAF_GON_REQ
:
1567 brcmf_dbg(TRACE
, "P2P: GO_NEG_PHASE status set\n");
1568 set_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE
, &p2p
->status
);
1569 config_af_params
->mpc_onoff
= 0;
1570 config_af_params
->search_channel
= true;
1571 p2p
->next_af_subtype
= act_frm
->subtype
+ 1;
1572 p2p
->gon_req_action
= true;
1573 /* increase dwell time to wait for RESP frame */
1574 af_params
->dwell_time
= cpu_to_le32(P2P_AF_MED_DWELL_TIME
);
1576 case P2P_PAF_GON_RSP
:
1577 p2p
->next_af_subtype
= act_frm
->subtype
+ 1;
1578 /* increase dwell time to wait for CONF frame */
1579 af_params
->dwell_time
= cpu_to_le32(P2P_AF_MED_DWELL_TIME
);
1581 case P2P_PAF_GON_CONF
:
1582 /* If we reached till GO Neg confirmation reset the filter */
1583 brcmf_dbg(TRACE
, "P2P: GO_NEG_PHASE status cleared\n");
1584 clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE
, &p2p
->status
);
1585 /* turn on mpc again if go nego is done */
1586 config_af_params
->mpc_onoff
= 1;
1587 /* minimize dwell time */
1588 af_params
->dwell_time
= cpu_to_le32(P2P_AF_MIN_DWELL_TIME
);
1589 config_af_params
->extra_listen
= false;
1591 case P2P_PAF_INVITE_REQ
:
1592 config_af_params
->search_channel
= true;
1593 p2p
->next_af_subtype
= act_frm
->subtype
+ 1;
1594 /* increase dwell time */
1595 af_params
->dwell_time
= cpu_to_le32(P2P_AF_MED_DWELL_TIME
);
1597 case P2P_PAF_INVITE_RSP
:
1598 /* minimize dwell time */
1599 af_params
->dwell_time
= cpu_to_le32(P2P_AF_MIN_DWELL_TIME
);
1600 config_af_params
->extra_listen
= false;
1602 case P2P_PAF_DEVDIS_REQ
:
1603 config_af_params
->search_channel
= true;
1604 p2p
->next_af_subtype
= act_frm
->subtype
+ 1;
1605 /* maximize dwell time to wait for RESP frame */
1606 af_params
->dwell_time
= cpu_to_le32(P2P_AF_LONG_DWELL_TIME
);
1608 case P2P_PAF_DEVDIS_RSP
:
1609 /* minimize dwell time */
1610 af_params
->dwell_time
= cpu_to_le32(P2P_AF_MIN_DWELL_TIME
);
1611 config_af_params
->extra_listen
= false;
1613 case P2P_PAF_PROVDIS_REQ
:
1614 ie_len
= le16_to_cpu(action_frame
->len
) -
1615 offsetof(struct brcmf_p2p_pub_act_frame
, elts
);
1616 if (cfg80211_get_p2p_attr(&act_frm
->elts
[0], ie_len
,
1617 IEEE80211_P2P_ATTR_GROUP_ID
,
1619 config_af_params
->search_channel
= true;
1620 config_af_params
->mpc_onoff
= 0;
1621 p2p
->next_af_subtype
= act_frm
->subtype
+ 1;
1622 /* increase dwell time to wait for RESP frame */
1623 af_params
->dwell_time
= cpu_to_le32(P2P_AF_MED_DWELL_TIME
);
1625 case P2P_PAF_PROVDIS_RSP
:
1626 /* wpa_supplicant send go nego req right after prov disc */
1627 p2p
->next_af_subtype
= P2P_PAF_GON_REQ
;
1628 /* increase dwell time to MED level */
1629 af_params
->dwell_time
= cpu_to_le32(P2P_AF_MED_DWELL_TIME
);
1630 config_af_params
->extra_listen
= false;
1633 brcmf_err("Unknown p2p pub act frame subtype: %d\n",
1641 * brcmf_p2p_send_action_frame() - send action frame .
1643 * @cfg: driver private data for cfg80211 interface.
1644 * @ndev: net device to transmit on.
1645 * @af_params: configuration data for action frame.
1647 bool brcmf_p2p_send_action_frame(struct brcmf_cfg80211_info
*cfg
,
1648 struct net_device
*ndev
,
1649 struct brcmf_fil_af_params_le
*af_params
)
1651 struct brcmf_p2p_info
*p2p
= &cfg
->p2p
;
1652 struct brcmf_if
*ifp
= netdev_priv(ndev
);
1653 struct brcmf_fil_action_frame_le
*action_frame
;
1654 struct brcmf_config_af_params config_af_params
;
1655 struct afx_hdl
*afx_hdl
= &p2p
->afx_hdl
;
1656 u16 action_frame_len
;
1661 s32 extra_listen_time
;
1664 action_frame
= &af_params
->action_frame
;
1665 action_frame_len
= le16_to_cpu(action_frame
->len
);
1667 brcmf_p2p_print_actframe(true, action_frame
->data
, action_frame_len
);
1669 /* Add the default dwell time. Dwell time to stay off-channel */
1670 /* to wait for a response action frame after transmitting an */
1671 /* GO Negotiation action frame */
1672 af_params
->dwell_time
= cpu_to_le32(P2P_AF_DWELL_TIME
);
1674 category
= action_frame
->data
[DOT11_ACTION_CAT_OFF
];
1675 action
= action_frame
->data
[DOT11_ACTION_ACT_OFF
];
1677 /* initialize variables */
1678 p2p
->next_af_subtype
= P2P_PAF_SUBTYPE_INVALID
;
1679 p2p
->gon_req_action
= false;
1681 /* config parameters */
1682 config_af_params
.mpc_onoff
= -1;
1683 config_af_params
.search_channel
= false;
1684 config_af_params
.extra_listen
= false;
1686 if (brcmf_p2p_is_pub_action(action_frame
->data
, action_frame_len
)) {
1687 /* p2p public action frame process */
1688 if (brcmf_p2p_pub_af_tx(cfg
, af_params
, &config_af_params
)) {
1689 /* Just send unknown subtype frame with */
1690 /* default parameters. */
1691 brcmf_err("P2P Public action frame, unknown subtype.\n");
1693 } else if (brcmf_p2p_is_gas_action(action_frame
->data
,
1694 action_frame_len
)) {
1695 /* service discovery process */
1696 if (action
== P2PSD_ACTION_ID_GAS_IREQ
||
1697 action
== P2PSD_ACTION_ID_GAS_CREQ
) {
1698 /* configure service discovery query frame */
1699 config_af_params
.search_channel
= true;
1701 /* save next af suptype to cancel */
1702 /* remaining dwell time */
1703 p2p
->next_af_subtype
= action
+ 1;
1705 af_params
->dwell_time
=
1706 cpu_to_le32(P2P_AF_MED_DWELL_TIME
);
1707 } else if (action
== P2PSD_ACTION_ID_GAS_IRESP
||
1708 action
== P2PSD_ACTION_ID_GAS_CRESP
) {
1709 /* configure service discovery response frame */
1710 af_params
->dwell_time
=
1711 cpu_to_le32(P2P_AF_MIN_DWELL_TIME
);
1713 brcmf_err("Unknown action type: %d\n", action
);
1716 } else if (brcmf_p2p_is_p2p_action(action_frame
->data
,
1717 action_frame_len
)) {
1718 /* do not configure anything. it will be */
1719 /* sent with a default configuration */
1721 brcmf_err("Unknown Frame: category 0x%x, action 0x%x\n",
1726 /* if connecting on primary iface, sleep for a while before sending
1729 if (test_bit(BRCMF_VIF_STATUS_CONNECTING
,
1730 &p2p
->bss_idx
[P2PAPI_BSSCFG_PRIMARY
].vif
->sme_state
))
1733 /* if scan is ongoing, abort current scan. */
1734 if (test_bit(BRCMF_SCAN_STATUS_BUSY
, &cfg
->scan_status
))
1735 brcmf_abort_scanning(cfg
);
1737 memcpy(afx_hdl
->tx_dst_addr
, action_frame
->da
, ETH_ALEN
);
1739 /* To make sure to send successfully action frame, turn off mpc */
1740 if (config_af_params
.mpc_onoff
== 0)
1741 brcmf_set_mpc(ifp
, 0);
1743 /* set status and destination address before sending af */
1744 if (p2p
->next_af_subtype
!= P2P_PAF_SUBTYPE_INVALID
) {
1745 /* set status to cancel the remained dwell time in rx process */
1746 set_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME
, &p2p
->status
);
1749 p2p
->af_sent_channel
= 0;
1750 set_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME
, &p2p
->status
);
1751 /* validate channel and p2p ies */
1752 if (config_af_params
.search_channel
&&
1753 IS_P2P_SOCIAL_CHANNEL(le32_to_cpu(af_params
->channel
)) &&
1754 p2p
->bss_idx
[P2PAPI_BSSCFG_DEVICE
].vif
->saved_ie
.probe_req_ie_len
) {
1755 afx_hdl
= &p2p
->afx_hdl
;
1756 afx_hdl
->peer_listen_chan
= le32_to_cpu(af_params
->channel
);
1758 if (brcmf_p2p_af_searching_channel(p2p
) ==
1759 P2P_INVALID_CHANNEL
) {
1760 brcmf_err("Couldn't find peer's channel.\n");
1764 /* Abort scan even for VSDB scenarios. Scan gets aborted in
1765 * firmware but after the check of piggyback algorithm. To take
1766 * care of current piggback algo, lets abort the scan here
1769 brcmf_notify_escan_complete(cfg
, ifp
, true, true);
1771 /* update channel */
1772 af_params
->channel
= cpu_to_le32(afx_hdl
->peer_chan
);
1776 while (!p2p
->block_gon_req_tx
&&
1777 (ack
== false) && (tx_retry
< P2P_AF_TX_MAX_RETRY
)) {
1778 ack
= !brcmf_p2p_tx_action_frame(p2p
, af_params
);
1782 brcmf_err("Failed to send Action Frame(retry %d)\n", tx_retry
);
1783 clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE
, &p2p
->status
);
1787 clear_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME
, &p2p
->status
);
1789 /* WAR: sometimes dongle does not keep the dwell time of 'actframe'.
1790 * if we coundn't get the next action response frame and dongle does
1791 * not keep the dwell time, go to listen state again to get next action
1794 if (ack
&& config_af_params
.extra_listen
&& !p2p
->block_gon_req_tx
&&
1795 test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME
, &p2p
->status
) &&
1796 p2p
->af_sent_channel
== afx_hdl
->my_listen_chan
) {
1797 delta_ms
= jiffies_to_msecs(jiffies
- p2p
->af_tx_sent_jiffies
);
1798 if (le32_to_cpu(af_params
->dwell_time
) > delta_ms
)
1799 extra_listen_time
= le32_to_cpu(af_params
->dwell_time
) -
1802 extra_listen_time
= 0;
1803 if (extra_listen_time
> 50) {
1804 set_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN
,
1806 brcmf_dbg(INFO
, "Wait more time! actual af time:%d, calculated extra listen:%d\n",
1807 le32_to_cpu(af_params
->dwell_time
),
1809 extra_listen_time
+= 100;
1810 if (!brcmf_p2p_discover_listen(p2p
,
1811 p2p
->af_sent_channel
,
1812 extra_listen_time
)) {
1813 unsigned long duration
;
1815 extra_listen_time
+= 100;
1816 duration
= msecs_to_jiffies(extra_listen_time
);
1817 wait_for_completion_timeout(&p2p
->wait_next_af
,
1820 clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN
,
1825 if (p2p
->block_gon_req_tx
) {
1826 /* if ack is true, supplicant will wait more time(100ms).
1827 * so we will return it as a success to get more time .
1829 p2p
->block_gon_req_tx
= false;
1833 clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME
, &p2p
->status
);
1834 /* if all done, turn mpc on again */
1835 if (config_af_params
.mpc_onoff
== 1)
1836 brcmf_set_mpc(ifp
, 1);
1842 * brcmf_p2p_notify_rx_mgmt_p2p_probereq() - Event handler for p2p probe req.
1844 * @ifp: interface pointer for which event was received.
1846 * @data: payload of event message (probe request).
1848 s32
brcmf_p2p_notify_rx_mgmt_p2p_probereq(struct brcmf_if
*ifp
,
1849 const struct brcmf_event_msg
*e
,
1852 struct brcmf_cfg80211_info
*cfg
= ifp
->drvr
->config
;
1853 struct brcmf_p2p_info
*p2p
= &cfg
->p2p
;
1854 struct afx_hdl
*afx_hdl
= &p2p
->afx_hdl
;
1855 struct brcmf_cfg80211_vif
*vif
= ifp
->vif
;
1856 struct brcmf_rx_mgmt_data
*rxframe
= (struct brcmf_rx_mgmt_data
*)data
;
1857 u16 chanspec
= be16_to_cpu(rxframe
->chanspec
);
1858 struct brcmu_chan ch
;
1864 brcmf_dbg(INFO
, "Enter: event %d reason %d\n", e
->event_code
,
1867 ch
.chspec
= be16_to_cpu(rxframe
->chanspec
);
1868 cfg
->d11inf
.decchspec(&ch
);
1870 if (test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL
, &p2p
->status
) &&
1871 (ether_addr_equal(afx_hdl
->tx_dst_addr
, e
->addr
))) {
1872 afx_hdl
->peer_chan
= ch
.chnum
;
1873 brcmf_dbg(INFO
, "PROBE REQUEST: Peer found, channel=%d\n",
1874 afx_hdl
->peer_chan
);
1875 complete(&afx_hdl
->act_frm_scan
);
1878 /* Firmware sends us two proberesponses for each idx one. At the */
1879 /* moment anything but bsscfgidx 0 is passed up to supplicant */
1880 if (e
->bsscfgidx
== 0)
1883 /* Filter any P2P probe reqs arriving during the GO-NEG Phase */
1884 if (test_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE
, &p2p
->status
)) {
1885 brcmf_dbg(INFO
, "Filtering P2P probe_req in GO-NEG phase\n");
1889 /* Check if wpa_supplicant has registered for this frame */
1890 brcmf_dbg(INFO
, "vif->mgmt_rx_reg %04x\n", vif
->mgmt_rx_reg
);
1891 mgmt_type
= (IEEE80211_STYPE_PROBE_REQ
& IEEE80211_FCTL_STYPE
) >> 4;
1892 if ((vif
->mgmt_rx_reg
& BIT(mgmt_type
)) == 0)
1895 mgmt_frame
= (u8
*)(rxframe
+ 1);
1896 mgmt_frame_len
= e
->datalen
- sizeof(*rxframe
);
1897 freq
= ieee80211_channel_to_frequency(ch
.chnum
,
1898 ch
.band
== BRCMU_CHAN_BAND_2G
?
1899 IEEE80211_BAND_2GHZ
:
1900 IEEE80211_BAND_5GHZ
);
1902 cfg80211_rx_mgmt(&vif
->wdev
, freq
, 0, mgmt_frame
, mgmt_frame_len
, 0);
1904 brcmf_dbg(INFO
, "mgmt_frame_len (%d) , e->datalen (%d), chanspec (%04x), freq (%d)\n",
1905 mgmt_frame_len
, e
->datalen
, chanspec
, freq
);
1912 * brcmf_p2p_get_current_chanspec() - Get current operation channel.
1914 * @p2p: P2P specific data.
1915 * @chanspec: chanspec to be returned.
1917 static void brcmf_p2p_get_current_chanspec(struct brcmf_p2p_info
*p2p
,
1920 struct brcmf_if
*ifp
;
1921 u8 mac_addr
[ETH_ALEN
];
1922 struct brcmu_chan ch
;
1923 struct brcmf_bss_info_le
*bi
;
1926 ifp
= p2p
->bss_idx
[P2PAPI_BSSCFG_PRIMARY
].vif
->ifp
;
1928 if (brcmf_fil_cmd_data_get(ifp
, BRCMF_C_GET_BSSID
, mac_addr
,
1930 buf
= kzalloc(WL_BSS_INFO_MAX
, GFP_KERNEL
);
1932 *(__le32
*)buf
= cpu_to_le32(WL_BSS_INFO_MAX
);
1933 if (brcmf_fil_cmd_data_get(ifp
, BRCMF_C_GET_BSS_INFO
,
1934 buf
, WL_BSS_INFO_MAX
) == 0) {
1935 bi
= (struct brcmf_bss_info_le
*)(buf
+ 4);
1936 *chanspec
= le16_to_cpu(bi
->chanspec
);
1943 /* Use default channel for P2P */
1944 ch
.chnum
= BRCMF_P2P_TEMP_CHAN
;
1945 ch
.bw
= BRCMU_CHAN_BW_20
;
1946 p2p
->cfg
->d11inf
.encchspec(&ch
);
1947 *chanspec
= ch
.chspec
;
1951 * Change a P2P Role.
1953 * @mac: MAC address of the BSS to change a role
1954 * Returns 0 if success.
1956 int brcmf_p2p_ifchange(struct brcmf_cfg80211_info
*cfg
,
1957 enum brcmf_fil_p2p_if_types if_type
)
1959 struct brcmf_p2p_info
*p2p
= &cfg
->p2p
;
1960 struct brcmf_cfg80211_vif
*vif
;
1961 struct brcmf_fil_p2p_if_le if_request
;
1965 brcmf_dbg(TRACE
, "Enter\n");
1967 vif
= p2p
->bss_idx
[P2PAPI_BSSCFG_PRIMARY
].vif
;
1969 brcmf_err("vif for P2PAPI_BSSCFG_PRIMARY does not exist\n");
1972 brcmf_notify_escan_complete(cfg
, vif
->ifp
, true, true);
1973 vif
= p2p
->bss_idx
[P2PAPI_BSSCFG_CONNECTION
].vif
;
1975 brcmf_err("vif for P2PAPI_BSSCFG_CONNECTION does not exist\n");
1978 brcmf_set_mpc(vif
->ifp
, 0);
1980 /* In concurrency case, STA may be already associated in a particular */
1981 /* channel. so retrieve the current channel of primary interface and */
1982 /* then start the virtual interface on that. */
1983 brcmf_p2p_get_current_chanspec(p2p
, &chanspec
);
1985 if_request
.type
= cpu_to_le16((u16
)if_type
);
1986 if_request
.chspec
= cpu_to_le16(chanspec
);
1987 memcpy(if_request
.addr
, p2p
->int_addr
, sizeof(if_request
.addr
));
1989 brcmf_cfg80211_arm_vif_event(cfg
, vif
);
1990 err
= brcmf_fil_iovar_data_set(vif
->ifp
, "p2p_ifupd", &if_request
,
1991 sizeof(if_request
));
1993 brcmf_err("p2p_ifupd FAILED, err=%d\n", err
);
1994 brcmf_cfg80211_arm_vif_event(cfg
, NULL
);
1997 err
= brcmf_cfg80211_wait_vif_event_timeout(cfg
, BRCMF_E_IF_CHANGE
,
1998 msecs_to_jiffies(1500));
1999 brcmf_cfg80211_arm_vif_event(cfg
, NULL
);
2001 brcmf_err("No BRCMF_E_IF_CHANGE event received\n");
2005 err
= brcmf_fil_cmd_int_set(vif
->ifp
, BRCMF_C_SET_SCB_TIMEOUT
,
2006 BRCMF_SCB_TIMEOUT_VALUE
);
2011 static int brcmf_p2p_request_p2p_if(struct brcmf_p2p_info
*p2p
,
2012 struct brcmf_if
*ifp
, u8 ea
[ETH_ALEN
],
2013 enum brcmf_fil_p2p_if_types iftype
)
2015 struct brcmf_fil_p2p_if_le if_request
;
2019 /* we need a default channel */
2020 brcmf_p2p_get_current_chanspec(p2p
, &chanspec
);
2022 /* fill the firmware request */
2023 memcpy(if_request
.addr
, ea
, ETH_ALEN
);
2024 if_request
.type
= cpu_to_le16((u16
)iftype
);
2025 if_request
.chspec
= cpu_to_le16(chanspec
);
2027 err
= brcmf_fil_iovar_data_set(ifp
, "p2p_ifadd", &if_request
,
2028 sizeof(if_request
));
2035 static int brcmf_p2p_disable_p2p_if(struct brcmf_cfg80211_vif
*vif
)
2037 struct brcmf_cfg80211_info
*cfg
= wdev_to_cfg(&vif
->wdev
);
2038 struct net_device
*pri_ndev
= cfg_to_ndev(cfg
);
2039 struct brcmf_if
*ifp
= netdev_priv(pri_ndev
);
2040 u8
*addr
= vif
->wdev
.netdev
->dev_addr
;
2042 return brcmf_fil_iovar_data_set(ifp
, "p2p_ifdis", addr
, ETH_ALEN
);
2045 static int brcmf_p2p_release_p2p_if(struct brcmf_cfg80211_vif
*vif
)
2047 struct brcmf_cfg80211_info
*cfg
= wdev_to_cfg(&vif
->wdev
);
2048 struct net_device
*pri_ndev
= cfg_to_ndev(cfg
);
2049 struct brcmf_if
*ifp
= netdev_priv(pri_ndev
);
2050 u8
*addr
= vif
->wdev
.netdev
->dev_addr
;
2052 return brcmf_fil_iovar_data_set(ifp
, "p2p_ifdel", addr
, ETH_ALEN
);
2056 * brcmf_p2p_create_p2pdev() - create a P2P_DEVICE virtual interface.
2058 * @p2p: P2P specific data.
2059 * @wiphy: wiphy device of new interface.
2060 * @addr: mac address for this new interface.
2062 static struct wireless_dev
*brcmf_p2p_create_p2pdev(struct brcmf_p2p_info
*p2p
,
2063 struct wiphy
*wiphy
,
2066 struct brcmf_cfg80211_vif
*p2p_vif
;
2067 struct brcmf_if
*p2p_ifp
;
2068 struct brcmf_if
*pri_ifp
;
2072 if (p2p
->bss_idx
[P2PAPI_BSSCFG_DEVICE
].vif
)
2073 return ERR_PTR(-ENOSPC
);
2075 p2p_vif
= brcmf_alloc_vif(p2p
->cfg
, NL80211_IFTYPE_P2P_DEVICE
,
2077 if (IS_ERR(p2p_vif
)) {
2078 brcmf_err("could not create discovery vif\n");
2079 return (struct wireless_dev
*)p2p_vif
;
2082 pri_ifp
= p2p
->bss_idx
[P2PAPI_BSSCFG_PRIMARY
].vif
->ifp
;
2083 brcmf_p2p_generate_bss_mac(p2p
, addr
);
2084 brcmf_p2p_set_firmware(pri_ifp
, p2p
->dev_addr
);
2086 brcmf_cfg80211_arm_vif_event(p2p
->cfg
, p2p_vif
);
2088 /* Initialize P2P Discovery in the firmware */
2089 err
= brcmf_fil_iovar_int_set(pri_ifp
, "p2p_disc", 1);
2091 brcmf_err("set p2p_disc error\n");
2092 brcmf_cfg80211_arm_vif_event(p2p
->cfg
, NULL
);
2096 /* wait for firmware event */
2097 err
= brcmf_cfg80211_wait_vif_event_timeout(p2p
->cfg
, BRCMF_E_IF_ADD
,
2098 msecs_to_jiffies(1500));
2099 brcmf_cfg80211_arm_vif_event(p2p
->cfg
, NULL
);
2101 brcmf_err("timeout occurred\n");
2106 /* discovery interface created */
2107 p2p_ifp
= p2p_vif
->ifp
;
2108 p2p
->bss_idx
[P2PAPI_BSSCFG_DEVICE
].vif
= p2p_vif
;
2109 memcpy(p2p_ifp
->mac_addr
, p2p
->dev_addr
, ETH_ALEN
);
2110 memcpy(&p2p_vif
->wdev
.address
, p2p
->dev_addr
, sizeof(p2p
->dev_addr
));
2112 /* verify bsscfg index for P2P discovery */
2113 err
= brcmf_fil_iovar_int_get(pri_ifp
, "p2p_dev", &bssidx
);
2115 brcmf_err("retrieving discover bsscfg index failed\n");
2119 WARN_ON(p2p_ifp
->bssidx
!= bssidx
);
2121 init_completion(&p2p
->send_af_done
);
2122 INIT_WORK(&p2p
->afx_hdl
.afx_work
, brcmf_p2p_afx_handler
);
2123 init_completion(&p2p
->afx_hdl
.act_frm_scan
);
2124 init_completion(&p2p
->wait_next_af
);
2126 return &p2p_vif
->wdev
;
2129 brcmf_free_vif(p2p_vif
);
2130 return ERR_PTR(err
);
2134 * brcmf_p2p_delete_p2pdev() - delete P2P_DEVICE virtual interface.
2136 * @vif: virtual interface object to delete.
2138 static void brcmf_p2p_delete_p2pdev(struct brcmf_p2p_info
*p2p
,
2139 struct brcmf_cfg80211_vif
*vif
)
2141 cfg80211_unregister_wdev(&vif
->wdev
);
2142 p2p
->bss_idx
[P2PAPI_BSSCFG_DEVICE
].vif
= NULL
;
2143 brcmf_remove_interface(vif
->ifp
->drvr
, vif
->ifp
->bssidx
);
2144 brcmf_free_vif(vif
);
2148 * brcmf_p2p_add_vif() - create a new P2P virtual interface.
2150 * @wiphy: wiphy device of new interface.
2151 * @name: name of the new interface.
2152 * @name_assign_type: origin of the interface name
2153 * @type: nl80211 interface type.
2155 * @params: contains mac address for P2P device.
2157 struct wireless_dev
*brcmf_p2p_add_vif(struct wiphy
*wiphy
, const char *name
,
2158 unsigned char name_assign_type
,
2159 enum nl80211_iftype type
, u32
*flags
,
2160 struct vif_params
*params
)
2162 struct brcmf_cfg80211_info
*cfg
= wiphy_to_cfg(wiphy
);
2163 struct brcmf_if
*ifp
= netdev_priv(cfg_to_ndev(cfg
));
2164 struct brcmf_cfg80211_vif
*vif
;
2165 enum brcmf_fil_p2p_if_types iftype
;
2168 if (brcmf_cfg80211_vif_event_armed(cfg
))
2169 return ERR_PTR(-EBUSY
);
2171 brcmf_dbg(INFO
, "adding vif \"%s\" (type=%d)\n", name
, type
);
2174 case NL80211_IFTYPE_P2P_CLIENT
:
2175 iftype
= BRCMF_FIL_P2P_IF_CLIENT
;
2177 case NL80211_IFTYPE_P2P_GO
:
2178 iftype
= BRCMF_FIL_P2P_IF_GO
;
2180 case NL80211_IFTYPE_P2P_DEVICE
:
2181 return brcmf_p2p_create_p2pdev(&cfg
->p2p
, wiphy
,
2184 return ERR_PTR(-EOPNOTSUPP
);
2187 vif
= brcmf_alloc_vif(cfg
, type
, false);
2189 return (struct wireless_dev
*)vif
;
2190 brcmf_cfg80211_arm_vif_event(cfg
, vif
);
2192 err
= brcmf_p2p_request_p2p_if(&cfg
->p2p
, ifp
, cfg
->p2p
.int_addr
,
2195 brcmf_cfg80211_arm_vif_event(cfg
, NULL
);
2199 /* wait for firmware event */
2200 err
= brcmf_cfg80211_wait_vif_event_timeout(cfg
, BRCMF_E_IF_ADD
,
2201 msecs_to_jiffies(1500));
2202 brcmf_cfg80211_arm_vif_event(cfg
, NULL
);
2204 brcmf_err("timeout occurred\n");
2209 /* interface created in firmware */
2212 brcmf_err("no if pointer provided\n");
2217 strncpy(ifp
->ndev
->name
, name
, sizeof(ifp
->ndev
->name
) - 1);
2218 ifp
->ndev
->name_assign_type
= name_assign_type
;
2219 err
= brcmf_net_attach(ifp
, true);
2221 brcmf_err("Registering netdevice failed\n");
2225 cfg
->p2p
.bss_idx
[P2PAPI_BSSCFG_CONNECTION
].vif
= vif
;
2226 /* Disable firmware roaming for P2P interface */
2227 brcmf_fil_iovar_int_set(ifp
, "roam_off", 1);
2228 if (iftype
== BRCMF_FIL_P2P_IF_GO
) {
2229 /* set station timeout for p2p */
2230 brcmf_fil_cmd_int_set(ifp
, BRCMF_C_SET_SCB_TIMEOUT
,
2231 BRCMF_SCB_TIMEOUT_VALUE
);
2233 return &ifp
->vif
->wdev
;
2236 brcmf_free_vif(vif
);
2237 return ERR_PTR(err
);
2241 * brcmf_p2p_del_vif() - delete a P2P virtual interface.
2243 * @wiphy: wiphy device of interface.
2244 * @wdev: wireless device of interface.
2246 int brcmf_p2p_del_vif(struct wiphy
*wiphy
, struct wireless_dev
*wdev
)
2248 struct brcmf_cfg80211_info
*cfg
= wiphy_priv(wiphy
);
2249 struct brcmf_p2p_info
*p2p
= &cfg
->p2p
;
2250 struct brcmf_cfg80211_vif
*vif
;
2251 unsigned long jiffie_timeout
= msecs_to_jiffies(1500);
2252 bool wait_for_disable
= false;
2255 brcmf_dbg(TRACE
, "delete P2P vif\n");
2256 vif
= container_of(wdev
, struct brcmf_cfg80211_vif
, wdev
);
2258 switch (vif
->wdev
.iftype
) {
2259 case NL80211_IFTYPE_P2P_CLIENT
:
2260 if (test_bit(BRCMF_VIF_STATUS_DISCONNECTING
, &vif
->sme_state
))
2261 wait_for_disable
= true;
2264 case NL80211_IFTYPE_P2P_GO
:
2265 if (!brcmf_p2p_disable_p2p_if(vif
))
2266 wait_for_disable
= true;
2269 case NL80211_IFTYPE_P2P_DEVICE
:
2270 brcmf_p2p_cancel_remain_on_channel(vif
->ifp
);
2271 brcmf_p2p_deinit_discovery(p2p
);
2272 brcmf_p2p_delete_p2pdev(p2p
, vif
);
2278 clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE
, &p2p
->status
);
2279 brcmf_dbg(INFO
, "P2P: GO_NEG_PHASE status cleared\n");
2281 if (wait_for_disable
)
2282 wait_for_completion_timeout(&cfg
->vif_disabled
,
2283 msecs_to_jiffies(500));
2285 brcmf_vif_clear_mgmt_ies(vif
);
2287 brcmf_cfg80211_arm_vif_event(cfg
, vif
);
2288 err
= brcmf_p2p_release_p2p_if(vif
);
2290 /* wait for firmware event */
2291 err
= brcmf_cfg80211_wait_vif_event_timeout(cfg
, BRCMF_E_IF_DEL
,
2298 brcmf_cfg80211_arm_vif_event(cfg
, NULL
);
2299 p2p
->bss_idx
[P2PAPI_BSSCFG_CONNECTION
].vif
= NULL
;
2304 int brcmf_p2p_start_device(struct wiphy
*wiphy
, struct wireless_dev
*wdev
)
2306 struct brcmf_cfg80211_info
*cfg
= wiphy_to_cfg(wiphy
);
2307 struct brcmf_p2p_info
*p2p
= &cfg
->p2p
;
2308 struct brcmf_cfg80211_vif
*vif
;
2311 vif
= container_of(wdev
, struct brcmf_cfg80211_vif
, wdev
);
2312 mutex_lock(&cfg
->usr_sync
);
2313 err
= brcmf_p2p_enable_discovery(p2p
);
2315 set_bit(BRCMF_VIF_STATUS_READY
, &vif
->sme_state
);
2316 mutex_unlock(&cfg
->usr_sync
);
2320 void brcmf_p2p_stop_device(struct wiphy
*wiphy
, struct wireless_dev
*wdev
)
2322 struct brcmf_cfg80211_info
*cfg
= wiphy_to_cfg(wiphy
);
2323 struct brcmf_p2p_info
*p2p
= &cfg
->p2p
;
2324 struct brcmf_cfg80211_vif
*vif
;
2326 vif
= container_of(wdev
, struct brcmf_cfg80211_vif
, wdev
);
2327 mutex_lock(&cfg
->usr_sync
);
2328 (void)brcmf_p2p_deinit_discovery(p2p
);
2329 brcmf_abort_scanning(cfg
);
2330 clear_bit(BRCMF_VIF_STATUS_READY
, &vif
->sme_state
);
2331 mutex_unlock(&cfg
->usr_sync
);
2335 * brcmf_p2p_attach() - attach for P2P.
2337 * @cfg: driver private data for cfg80211 interface.
2339 s32
brcmf_p2p_attach(struct brcmf_cfg80211_info
*cfg
)
2341 struct brcmf_if
*pri_ifp
;
2342 struct brcmf_if
*p2p_ifp
;
2343 struct brcmf_cfg80211_vif
*p2p_vif
;
2344 struct brcmf_p2p_info
*p2p
;
2345 struct brcmf_pub
*drvr
;
2354 pri_ifp
= drvr
->iflist
[0];
2355 p2p_ifp
= drvr
->iflist
[1];
2357 p2p
->bss_idx
[P2PAPI_BSSCFG_PRIMARY
].vif
= pri_ifp
->vif
;
2360 p2p_vif
= brcmf_alloc_vif(cfg
, NL80211_IFTYPE_P2P_DEVICE
,
2362 if (IS_ERR(p2p_vif
)) {
2363 brcmf_err("could not create discovery vif\n");
2368 p2p_vif
->ifp
= p2p_ifp
;
2369 p2p_ifp
->vif
= p2p_vif
;
2370 p2p_vif
->wdev
.netdev
= p2p_ifp
->ndev
;
2371 p2p_ifp
->ndev
->ieee80211_ptr
= &p2p_vif
->wdev
;
2372 SET_NETDEV_DEV(p2p_ifp
->ndev
, wiphy_dev(cfg
->wiphy
));
2374 p2p
->bss_idx
[P2PAPI_BSSCFG_DEVICE
].vif
= p2p_vif
;
2376 brcmf_p2p_generate_bss_mac(p2p
, NULL
);
2377 memcpy(p2p_ifp
->mac_addr
, p2p
->dev_addr
, ETH_ALEN
);
2378 brcmf_p2p_set_firmware(pri_ifp
, p2p
->dev_addr
);
2380 /* Initialize P2P Discovery in the firmware */
2381 err
= brcmf_fil_iovar_int_set(pri_ifp
, "p2p_disc", 1);
2383 brcmf_err("set p2p_disc error\n");
2384 brcmf_free_vif(p2p_vif
);
2387 /* obtain bsscfg index for P2P discovery */
2388 err
= brcmf_fil_iovar_int_get(pri_ifp
, "p2p_dev", &bssidx
);
2390 brcmf_err("retrieving discover bsscfg index failed\n");
2391 brcmf_free_vif(p2p_vif
);
2394 /* Verify that firmware uses same bssidx as driver !! */
2395 if (p2p_ifp
->bssidx
!= bssidx
) {
2396 brcmf_err("Incorrect bssidx=%d, compared to p2p_ifp->bssidx=%d\n",
2397 bssidx
, p2p_ifp
->bssidx
);
2398 brcmf_free_vif(p2p_vif
);
2402 init_completion(&p2p
->send_af_done
);
2403 INIT_WORK(&p2p
->afx_hdl
.afx_work
, brcmf_p2p_afx_handler
);
2404 init_completion(&p2p
->afx_hdl
.act_frm_scan
);
2405 init_completion(&p2p
->wait_next_af
);
2412 * brcmf_p2p_detach() - detach P2P.
2414 * @p2p: P2P specific data.
2416 void brcmf_p2p_detach(struct brcmf_p2p_info
*p2p
)
2418 struct brcmf_cfg80211_vif
*vif
;
2420 vif
= p2p
->bss_idx
[P2PAPI_BSSCFG_DEVICE
].vif
;
2422 brcmf_p2p_cancel_remain_on_channel(vif
->ifp
);
2423 brcmf_p2p_deinit_discovery(p2p
);
2424 /* remove discovery interface */
2426 brcmf_p2p_delete_p2pdev(p2p
, vif
);
2429 /* just set it all to zero */
2430 memset(p2p
, 0, sizeof(*p2p
));