1 /* 2 * Copyright (c) 2012 Broadcom Corporation 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION 13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 #include <linux/slab.h> 17 #include <linux/netdevice.h> 18 #include <linux/etherdevice.h> 19 #include <linux/rtnetlink.h> 20 #include <net/cfg80211.h> 21 22 #include <brcmu_wifi.h> 23 #include <brcmu_utils.h> 24 #include <defs.h> 25 #include "core.h" 26 #include "debug.h" 27 #include "fwil.h" 28 #include "fwil_types.h" 29 #include "p2p.h" 30 #include "cfg80211.h" 31 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 41 42 #define BRCMF_P2P_WILDCARD_SSID "DIRECT-" 43 #define BRCMF_P2P_WILDCARD_SSID_LEN (sizeof(BRCMF_P2P_WILDCARD_SSID) - 1) 44 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 54 55 #define BRCMF_SCB_TIMEOUT_VALUE 20 56 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 */ 63 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 */ 68 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 msecs_to_jiffies(2000) 75 #define P2P_INVALID_CHANNEL -1 76 #define P2P_CHANNEL_SYNC_RETRY 5 77 #define P2P_AF_FRM_SCAN_MAX_WAIT msecs_to_jiffies(1500) 78 #define P2P_DEFAULT_SLEEP_TIME_VSDB 200 79 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 */ 91 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 */ 97 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 */ 104 105 #define BRCMF_P2P_DISABLE_TIMEOUT msecs_to_jiffies(500) 106 /** 107 * struct brcmf_p2p_disc_st_le - set discovery state in firmware. 108 * 109 * @state: requested discovery state (see enum brcmf_p2p_disc_state). 110 * @chspec: channel parameter for %WL_P2P_DISC_ST_LISTEN state. 111 * @dwell: dwell time in ms for %WL_P2P_DISC_ST_LISTEN state. 112 */ 113 struct brcmf_p2p_disc_st_le { 114 u8 state; 115 __le16 chspec; 116 __le16 dwell; 117 }; 118 119 /** 120 * enum brcmf_p2p_disc_state - P2P discovery state values 121 * 122 * @WL_P2P_DISC_ST_SCAN: P2P discovery with wildcard SSID and P2P IE. 123 * @WL_P2P_DISC_ST_LISTEN: P2P discovery off-channel for specified time. 124 * @WL_P2P_DISC_ST_SEARCH: P2P discovery with P2P wildcard SSID and P2P IE. 125 */ 126 enum brcmf_p2p_disc_state { 127 WL_P2P_DISC_ST_SCAN, 128 WL_P2P_DISC_ST_LISTEN, 129 WL_P2P_DISC_ST_SEARCH 130 }; 131 132 /** 133 * struct brcmf_p2p_scan_le - P2P specific scan request. 134 * 135 * @type: type of scan method requested (values: 'E' or 'S'). 136 * @reserved: reserved (ignored). 137 * @eparams: parameters used for type 'E'. 138 * @sparams: parameters used for type 'S'. 139 */ 140 struct brcmf_p2p_scan_le { 141 u8 type; 142 u8 reserved[3]; 143 union { 144 struct brcmf_escan_params_le eparams; 145 struct brcmf_scan_params_le sparams; 146 }; 147 }; 148 149 /** 150 * struct brcmf_p2p_pub_act_frame - WiFi P2P Public Action Frame 151 * 152 * @category: P2P_PUB_AF_CATEGORY 153 * @action: P2P_PUB_AF_ACTION 154 * @oui[3]: P2P_OUI 155 * @oui_type: OUI type - P2P_VER 156 * @subtype: OUI subtype - P2P_TYPE_* 157 * @dialog_token: nonzero, identifies req/rsp transaction 158 * @elts[1]: Variable length information elements. 159 */ 160 struct brcmf_p2p_pub_act_frame { 161 u8 category; 162 u8 action; 163 u8 oui[3]; 164 u8 oui_type; 165 u8 subtype; 166 u8 dialog_token; 167 u8 elts[1]; 168 }; 169 170 /** 171 * struct brcmf_p2p_action_frame - WiFi P2P Action Frame 172 * 173 * @category: P2P_AF_CATEGORY 174 * @OUI[3]: OUI - P2P_OUI 175 * @type: OUI Type - P2P_VER 176 * @subtype: OUI Subtype - P2P_AF_* 177 * @dialog_token: nonzero, identifies req/resp tranaction 178 * @elts[1]: Variable length information elements. 179 */ 180 struct brcmf_p2p_action_frame { 181 u8 category; 182 u8 oui[3]; 183 u8 type; 184 u8 subtype; 185 u8 dialog_token; 186 u8 elts[1]; 187 }; 188 189 /** 190 * struct brcmf_p2psd_gas_pub_act_frame - Wi-Fi GAS Public Action Frame 191 * 192 * @category: 0x04 Public Action Frame 193 * @action: 0x6c Advertisement Protocol 194 * @dialog_token: nonzero, identifies req/rsp transaction 195 * @query_data[1]: Query Data. SD gas ireq SD gas iresp 196 */ 197 struct brcmf_p2psd_gas_pub_act_frame { 198 u8 category; 199 u8 action; 200 u8 dialog_token; 201 u8 query_data[1]; 202 }; 203 204 /** 205 * struct brcmf_config_af_params - Action Frame Parameters for tx. 206 * 207 * @mpc_onoff: To make sure to send successfully action frame, we have to 208 * turn off mpc 0: off, 1: on, (-1): do nothing 209 * @search_channel: 1: search peer's channel to send af 210 * extra_listen: keep the dwell time to get af response frame. 211 */ 212 struct brcmf_config_af_params { 213 s32 mpc_onoff; 214 bool search_channel; 215 bool extra_listen; 216 }; 217 218 /** 219 * brcmf_p2p_is_pub_action() - true if p2p public type frame. 220 * 221 * @frame: action frame data. 222 * @frame_len: length of action frame data. 223 * 224 * Determine if action frame is p2p public action type 225 */ 226 static bool brcmf_p2p_is_pub_action(void *frame, u32 frame_len) 227 { 228 struct brcmf_p2p_pub_act_frame *pact_frm; 229 230 if (frame == NULL) 231 return false; 232 233 pact_frm = (struct brcmf_p2p_pub_act_frame *)frame; 234 if (frame_len < sizeof(struct brcmf_p2p_pub_act_frame) - 1) 235 return false; 236 237 if (pact_frm->category == P2P_PUB_AF_CATEGORY && 238 pact_frm->action == P2P_PUB_AF_ACTION && 239 pact_frm->oui_type == P2P_VER && 240 memcmp(pact_frm->oui, P2P_OUI, P2P_OUI_LEN) == 0) 241 return true; 242 243 return false; 244 } 245 246 /** 247 * brcmf_p2p_is_p2p_action() - true if p2p action type frame. 248 * 249 * @frame: action frame data. 250 * @frame_len: length of action frame data. 251 * 252 * Determine if action frame is p2p action type 253 */ 254 static bool brcmf_p2p_is_p2p_action(void *frame, u32 frame_len) 255 { 256 struct brcmf_p2p_action_frame *act_frm; 257 258 if (frame == NULL) 259 return false; 260 261 act_frm = (struct brcmf_p2p_action_frame *)frame; 262 if (frame_len < sizeof(struct brcmf_p2p_action_frame) - 1) 263 return false; 264 265 if (act_frm->category == P2P_AF_CATEGORY && 266 act_frm->type == P2P_VER && 267 memcmp(act_frm->oui, P2P_OUI, P2P_OUI_LEN) == 0) 268 return true; 269 270 return false; 271 } 272 273 /** 274 * brcmf_p2p_is_gas_action() - true if p2p gas action type frame. 275 * 276 * @frame: action frame data. 277 * @frame_len: length of action frame data. 278 * 279 * Determine if action frame is p2p gas action type 280 */ 281 static bool brcmf_p2p_is_gas_action(void *frame, u32 frame_len) 282 { 283 struct brcmf_p2psd_gas_pub_act_frame *sd_act_frm; 284 285 if (frame == NULL) 286 return false; 287 288 sd_act_frm = (struct brcmf_p2psd_gas_pub_act_frame *)frame; 289 if (frame_len < sizeof(struct brcmf_p2psd_gas_pub_act_frame) - 1) 290 return false; 291 292 if (sd_act_frm->category != P2PSD_ACTION_CATEGORY) 293 return false; 294 295 if (sd_act_frm->action == P2PSD_ACTION_ID_GAS_IREQ || 296 sd_act_frm->action == P2PSD_ACTION_ID_GAS_IRESP || 297 sd_act_frm->action == P2PSD_ACTION_ID_GAS_CREQ || 298 sd_act_frm->action == P2PSD_ACTION_ID_GAS_CRESP) 299 return true; 300 301 return false; 302 } 303 304 /** 305 * brcmf_p2p_print_actframe() - debug print routine. 306 * 307 * @tx: Received or to be transmitted 308 * @frame: action frame data. 309 * @frame_len: length of action frame data. 310 * 311 * Print information about the p2p action frame 312 */ 313 314 #ifdef DEBUG 315 316 static void brcmf_p2p_print_actframe(bool tx, void *frame, u32 frame_len) 317 { 318 struct brcmf_p2p_pub_act_frame *pact_frm; 319 struct brcmf_p2p_action_frame *act_frm; 320 struct brcmf_p2psd_gas_pub_act_frame *sd_act_frm; 321 322 if (!frame || frame_len <= 2) 323 return; 324 325 if (brcmf_p2p_is_pub_action(frame, frame_len)) { 326 pact_frm = (struct brcmf_p2p_pub_act_frame *)frame; 327 switch (pact_frm->subtype) { 328 case P2P_PAF_GON_REQ: 329 brcmf_dbg(TRACE, "%s P2P Group Owner Negotiation Req Frame\n", 330 (tx) ? "TX" : "RX"); 331 break; 332 case P2P_PAF_GON_RSP: 333 brcmf_dbg(TRACE, "%s P2P Group Owner Negotiation Rsp Frame\n", 334 (tx) ? "TX" : "RX"); 335 break; 336 case P2P_PAF_GON_CONF: 337 brcmf_dbg(TRACE, "%s P2P Group Owner Negotiation Confirm Frame\n", 338 (tx) ? "TX" : "RX"); 339 break; 340 case P2P_PAF_INVITE_REQ: 341 brcmf_dbg(TRACE, "%s P2P Invitation Request Frame\n", 342 (tx) ? "TX" : "RX"); 343 break; 344 case P2P_PAF_INVITE_RSP: 345 brcmf_dbg(TRACE, "%s P2P Invitation Response Frame\n", 346 (tx) ? "TX" : "RX"); 347 break; 348 case P2P_PAF_DEVDIS_REQ: 349 brcmf_dbg(TRACE, "%s P2P Device Discoverability Request Frame\n", 350 (tx) ? "TX" : "RX"); 351 break; 352 case P2P_PAF_DEVDIS_RSP: 353 brcmf_dbg(TRACE, "%s P2P Device Discoverability Response Frame\n", 354 (tx) ? "TX" : "RX"); 355 break; 356 case P2P_PAF_PROVDIS_REQ: 357 brcmf_dbg(TRACE, "%s P2P Provision Discovery Request Frame\n", 358 (tx) ? "TX" : "RX"); 359 break; 360 case P2P_PAF_PROVDIS_RSP: 361 brcmf_dbg(TRACE, "%s P2P Provision Discovery Response Frame\n", 362 (tx) ? "TX" : "RX"); 363 break; 364 default: 365 brcmf_dbg(TRACE, "%s Unknown P2P Public Action Frame\n", 366 (tx) ? "TX" : "RX"); 367 break; 368 } 369 } else if (brcmf_p2p_is_p2p_action(frame, frame_len)) { 370 act_frm = (struct brcmf_p2p_action_frame *)frame; 371 switch (act_frm->subtype) { 372 case P2P_AF_NOTICE_OF_ABSENCE: 373 brcmf_dbg(TRACE, "%s P2P Notice of Absence Frame\n", 374 (tx) ? "TX" : "RX"); 375 break; 376 case P2P_AF_PRESENCE_REQ: 377 brcmf_dbg(TRACE, "%s P2P Presence Request Frame\n", 378 (tx) ? "TX" : "RX"); 379 break; 380 case P2P_AF_PRESENCE_RSP: 381 brcmf_dbg(TRACE, "%s P2P Presence Response Frame\n", 382 (tx) ? "TX" : "RX"); 383 break; 384 case P2P_AF_GO_DISC_REQ: 385 brcmf_dbg(TRACE, "%s P2P Discoverability Request Frame\n", 386 (tx) ? "TX" : "RX"); 387 break; 388 default: 389 brcmf_dbg(TRACE, "%s Unknown P2P Action Frame\n", 390 (tx) ? "TX" : "RX"); 391 } 392 393 } else if (brcmf_p2p_is_gas_action(frame, frame_len)) { 394 sd_act_frm = (struct brcmf_p2psd_gas_pub_act_frame *)frame; 395 switch (sd_act_frm->action) { 396 case P2PSD_ACTION_ID_GAS_IREQ: 397 brcmf_dbg(TRACE, "%s P2P GAS Initial Request\n", 398 (tx) ? "TX" : "RX"); 399 break; 400 case P2PSD_ACTION_ID_GAS_IRESP: 401 brcmf_dbg(TRACE, "%s P2P GAS Initial Response\n", 402 (tx) ? "TX" : "RX"); 403 break; 404 case P2PSD_ACTION_ID_GAS_CREQ: 405 brcmf_dbg(TRACE, "%s P2P GAS Comback Request\n", 406 (tx) ? "TX" : "RX"); 407 break; 408 case P2PSD_ACTION_ID_GAS_CRESP: 409 brcmf_dbg(TRACE, "%s P2P GAS Comback Response\n", 410 (tx) ? "TX" : "RX"); 411 break; 412 default: 413 brcmf_dbg(TRACE, "%s Unknown P2P GAS Frame\n", 414 (tx) ? "TX" : "RX"); 415 break; 416 } 417 } 418 } 419 420 #else 421 422 static void brcmf_p2p_print_actframe(bool tx, void *frame, u32 frame_len) 423 { 424 } 425 426 #endif 427 428 429 /** 430 * brcmf_p2p_set_firmware() - prepare firmware for peer-to-peer operation. 431 * 432 * @ifp: ifp to use for iovars (primary). 433 * @p2p_mac: mac address to configure for p2p_da_override 434 */ 435 static int brcmf_p2p_set_firmware(struct brcmf_if *ifp, u8 *p2p_mac) 436 { 437 s32 ret = 0; 438 439 brcmf_fil_cmd_int_set(ifp, BRCMF_C_DOWN, 1); 440 brcmf_fil_iovar_int_set(ifp, "apsta", 1); 441 brcmf_fil_cmd_int_set(ifp, BRCMF_C_UP, 1); 442 443 /* In case of COB type, firmware has default mac address 444 * After Initializing firmware, we have to set current mac address to 445 * firmware for P2P device address. This must be done with discovery 446 * disabled. 447 */ 448 brcmf_fil_iovar_int_set(ifp, "p2p_disc", 0); 449 450 ret = brcmf_fil_iovar_data_set(ifp, "p2p_da_override", p2p_mac, 451 ETH_ALEN); 452 if (ret) 453 brcmf_err("failed to update device address ret %d\n", ret); 454 455 return ret; 456 } 457 458 /** 459 * brcmf_p2p_generate_bss_mac() - derive mac addresses for P2P. 460 * 461 * @p2p: P2P specific data. 462 * @dev_addr: optional device address. 463 * 464 * P2P needs mac addresses for P2P device and interface. If no device 465 * address it specified, these are derived from the primary net device, ie. 466 * the permanent ethernet address of the device. 467 */ 468 static void brcmf_p2p_generate_bss_mac(struct brcmf_p2p_info *p2p, u8 *dev_addr) 469 { 470 struct brcmf_if *pri_ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp; 471 bool local_admin = false; 472 473 if (!dev_addr || is_zero_ether_addr(dev_addr)) { 474 dev_addr = pri_ifp->mac_addr; 475 local_admin = true; 476 } 477 478 /* Generate the P2P Device Address. This consists of the device's 479 * primary MAC address with the locally administered bit set. 480 */ 481 memcpy(p2p->dev_addr, dev_addr, ETH_ALEN); 482 if (local_admin) 483 p2p->dev_addr[0] |= 0x02; 484 485 /* Generate the P2P Interface Address. If the discovery and connection 486 * BSSCFGs need to simultaneously co-exist, then this address must be 487 * different from the P2P Device Address, but also locally administered. 488 */ 489 memcpy(p2p->int_addr, p2p->dev_addr, ETH_ALEN); 490 p2p->int_addr[0] |= 0x02; 491 p2p->int_addr[4] ^= 0x80; 492 } 493 494 /** 495 * brcmf_p2p_scan_is_p2p_request() - is cfg80211 scan request a P2P scan. 496 * 497 * @request: the scan request as received from cfg80211. 498 * 499 * returns true if one of the ssids in the request matches the 500 * P2P wildcard ssid; otherwise returns false. 501 */ 502 static bool brcmf_p2p_scan_is_p2p_request(struct cfg80211_scan_request *request) 503 { 504 struct cfg80211_ssid *ssids = request->ssids; 505 int i; 506 507 for (i = 0; i < request->n_ssids; i++) { 508 if (ssids[i].ssid_len != BRCMF_P2P_WILDCARD_SSID_LEN) 509 continue; 510 511 brcmf_dbg(INFO, "comparing ssid \"%s\"", ssids[i].ssid); 512 if (!memcmp(BRCMF_P2P_WILDCARD_SSID, ssids[i].ssid, 513 BRCMF_P2P_WILDCARD_SSID_LEN)) 514 return true; 515 } 516 return false; 517 } 518 519 /** 520 * brcmf_p2p_set_discover_state - set discover state in firmware. 521 * 522 * @ifp: low-level interface object. 523 * @state: discover state to set. 524 * @chanspec: channel parameters (for state @WL_P2P_DISC_ST_LISTEN only). 525 * @listen_ms: duration to listen (for state @WL_P2P_DISC_ST_LISTEN only). 526 */ 527 static s32 brcmf_p2p_set_discover_state(struct brcmf_if *ifp, u8 state, 528 u16 chanspec, u16 listen_ms) 529 { 530 struct brcmf_p2p_disc_st_le discover_state; 531 s32 ret = 0; 532 brcmf_dbg(TRACE, "enter\n"); 533 534 discover_state.state = state; 535 discover_state.chspec = cpu_to_le16(chanspec); 536 discover_state.dwell = cpu_to_le16(listen_ms); 537 ret = brcmf_fil_bsscfg_data_set(ifp, "p2p_state", &discover_state, 538 sizeof(discover_state)); 539 return ret; 540 } 541 542 /** 543 * brcmf_p2p_deinit_discovery() - disable P2P device discovery. 544 * 545 * @p2p: P2P specific data. 546 * 547 * Resets the discovery state and disables it in firmware. 548 */ 549 static s32 brcmf_p2p_deinit_discovery(struct brcmf_p2p_info *p2p) 550 { 551 struct brcmf_cfg80211_vif *vif; 552 553 brcmf_dbg(TRACE, "enter\n"); 554 555 /* Set the discovery state to SCAN */ 556 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif; 557 (void)brcmf_p2p_set_discover_state(vif->ifp, WL_P2P_DISC_ST_SCAN, 0, 0); 558 559 /* Disable P2P discovery in the firmware */ 560 vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif; 561 (void)brcmf_fil_iovar_int_set(vif->ifp, "p2p_disc", 0); 562 563 return 0; 564 } 565 566 /** 567 * brcmf_p2p_enable_discovery() - initialize and configure discovery. 568 * 569 * @p2p: P2P specific data. 570 * 571 * Initializes the discovery device and configure the virtual interface. 572 */ 573 static int brcmf_p2p_enable_discovery(struct brcmf_p2p_info *p2p) 574 { 575 struct brcmf_cfg80211_vif *vif; 576 s32 ret = 0; 577 578 brcmf_dbg(TRACE, "enter\n"); 579 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif; 580 if (!vif) { 581 brcmf_err("P2P config device not available\n"); 582 ret = -EPERM; 583 goto exit; 584 } 585 586 if (test_bit(BRCMF_P2P_STATUS_ENABLED, &p2p->status)) { 587 brcmf_dbg(INFO, "P2P config device already configured\n"); 588 goto exit; 589 } 590 591 /* Re-initialize P2P Discovery in the firmware */ 592 vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif; 593 ret = brcmf_fil_iovar_int_set(vif->ifp, "p2p_disc", 1); 594 if (ret < 0) { 595 brcmf_err("set p2p_disc error\n"); 596 goto exit; 597 } 598 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif; 599 ret = brcmf_p2p_set_discover_state(vif->ifp, WL_P2P_DISC_ST_SCAN, 0, 0); 600 if (ret < 0) { 601 brcmf_err("unable to set WL_P2P_DISC_ST_SCAN\n"); 602 goto exit; 603 } 604 605 /* 606 * Set wsec to any non-zero value in the discovery bsscfg 607 * to ensure our P2P probe responses have the privacy bit 608 * set in the 802.11 WPA IE. Some peer devices may not 609 * initiate WPS with us if this bit is not set. 610 */ 611 ret = brcmf_fil_bsscfg_int_set(vif->ifp, "wsec", AES_ENABLED); 612 if (ret < 0) { 613 brcmf_err("wsec error %d\n", ret); 614 goto exit; 615 } 616 617 set_bit(BRCMF_P2P_STATUS_ENABLED, &p2p->status); 618 exit: 619 return ret; 620 } 621 622 /** 623 * brcmf_p2p_escan() - initiate a P2P scan. 624 * 625 * @p2p: P2P specific data. 626 * @num_chans: number of channels to scan. 627 * @chanspecs: channel parameters for @num_chans channels. 628 * @search_state: P2P discover state to use. 629 * @bss_type: type of P2P bss. 630 */ 631 static s32 brcmf_p2p_escan(struct brcmf_p2p_info *p2p, u32 num_chans, 632 u16 chanspecs[], s32 search_state, 633 enum p2p_bss_type bss_type) 634 { 635 s32 ret = 0; 636 s32 memsize = offsetof(struct brcmf_p2p_scan_le, 637 eparams.params_le.channel_list); 638 s32 nprobes; 639 s32 active; 640 u32 i; 641 u8 *memblk; 642 struct brcmf_cfg80211_vif *vif; 643 struct brcmf_p2p_scan_le *p2p_params; 644 struct brcmf_scan_params_le *sparams; 645 646 memsize += num_chans * sizeof(__le16); 647 memblk = kzalloc(memsize, GFP_KERNEL); 648 if (!memblk) 649 return -ENOMEM; 650 651 vif = p2p->bss_idx[bss_type].vif; 652 if (vif == NULL) { 653 brcmf_err("no vif for bss type %d\n", bss_type); 654 ret = -EINVAL; 655 goto exit; 656 } 657 p2p_params = (struct brcmf_p2p_scan_le *)memblk; 658 sparams = &p2p_params->eparams.params_le; 659 660 switch (search_state) { 661 case WL_P2P_DISC_ST_SEARCH: 662 /* 663 * If we in SEARCH STATE, we don't need to set SSID explictly 664 * because dongle use P2P WILDCARD internally by default, use 665 * null ssid, which it is already due to kzalloc. 666 */ 667 break; 668 case WL_P2P_DISC_ST_SCAN: 669 /* 670 * wpa_supplicant has p2p_find command with type social or 671 * progressive. For progressive, we need to set the ssid to 672 * P2P WILDCARD because we just do broadcast scan unless 673 * setting SSID. 674 */ 675 sparams->ssid_le.SSID_len = 676 cpu_to_le32(BRCMF_P2P_WILDCARD_SSID_LEN); 677 memcpy(sparams->ssid_le.SSID, BRCMF_P2P_WILDCARD_SSID, 678 BRCMF_P2P_WILDCARD_SSID_LEN); 679 break; 680 default: 681 brcmf_err(" invalid search state %d\n", search_state); 682 ret = -EINVAL; 683 goto exit; 684 } 685 686 brcmf_p2p_set_discover_state(vif->ifp, search_state, 0, 0); 687 688 /* 689 * set p2p scan parameters. 690 */ 691 p2p_params->type = 'E'; 692 693 /* determine the scan engine parameters */ 694 sparams->bss_type = DOT11_BSSTYPE_ANY; 695 sparams->scan_type = BRCMF_SCANTYPE_ACTIVE; 696 697 eth_broadcast_addr(sparams->bssid); 698 sparams->home_time = cpu_to_le32(P2PAPI_SCAN_HOME_TIME_MS); 699 700 /* 701 * SOCIAL_CHAN_CNT + 1 takes care of the Progressive scan 702 * supported by the supplicant. 703 */ 704 if (num_chans == SOCIAL_CHAN_CNT || num_chans == (SOCIAL_CHAN_CNT + 1)) 705 active = P2PAPI_SCAN_SOCIAL_DWELL_TIME_MS; 706 else if (num_chans == AF_PEER_SEARCH_CNT) 707 active = P2PAPI_SCAN_AF_SEARCH_DWELL_TIME_MS; 708 else if (brcmf_get_vif_state_any(p2p->cfg, BRCMF_VIF_STATUS_CONNECTED)) 709 active = -1; 710 else 711 active = P2PAPI_SCAN_DWELL_TIME_MS; 712 713 /* Override scan params to find a peer for a connection */ 714 if (num_chans == 1) { 715 active = WL_SCAN_CONNECT_DWELL_TIME_MS; 716 /* WAR to sync with presence period of VSDB GO. 717 * send probe request more frequently 718 */ 719 nprobes = active / WL_SCAN_JOIN_PROBE_INTERVAL_MS; 720 } else { 721 nprobes = active / P2PAPI_SCAN_NPROBS_TIME_MS; 722 } 723 724 if (nprobes <= 0) 725 nprobes = 1; 726 727 brcmf_dbg(INFO, "nprobes # %d, active_time %d\n", nprobes, active); 728 sparams->active_time = cpu_to_le32(active); 729 sparams->nprobes = cpu_to_le32(nprobes); 730 sparams->passive_time = cpu_to_le32(-1); 731 sparams->channel_num = cpu_to_le32(num_chans & 732 BRCMF_SCAN_PARAMS_COUNT_MASK); 733 for (i = 0; i < num_chans; i++) 734 sparams->channel_list[i] = cpu_to_le16(chanspecs[i]); 735 736 /* set the escan specific parameters */ 737 p2p_params->eparams.version = cpu_to_le32(BRCMF_ESCAN_REQ_VERSION); 738 p2p_params->eparams.action = cpu_to_le16(WL_ESCAN_ACTION_START); 739 p2p_params->eparams.sync_id = cpu_to_le16(0x1234); 740 /* perform p2p scan on primary device */ 741 ret = brcmf_fil_bsscfg_data_set(vif->ifp, "p2p_scan", memblk, memsize); 742 if (!ret) 743 set_bit(BRCMF_SCAN_STATUS_BUSY, &p2p->cfg->scan_status); 744 exit: 745 kfree(memblk); 746 return ret; 747 } 748 749 /** 750 * brcmf_p2p_run_escan() - escan callback for peer-to-peer. 751 * 752 * @cfg: driver private data for cfg80211 interface. 753 * @ndev: net device for which scan is requested. 754 * @request: scan request from cfg80211. 755 * @action: scan action. 756 * 757 * Determines the P2P discovery state based to scan request parameters and 758 * validates the channels in the request. 759 */ 760 static s32 brcmf_p2p_run_escan(struct brcmf_cfg80211_info *cfg, 761 struct brcmf_if *ifp, 762 struct cfg80211_scan_request *request) 763 { 764 struct brcmf_p2p_info *p2p = &cfg->p2p; 765 s32 err = 0; 766 s32 search_state = WL_P2P_DISC_ST_SCAN; 767 struct brcmf_cfg80211_vif *vif; 768 struct net_device *dev = NULL; 769 int i, num_nodfs = 0; 770 u16 *chanspecs; 771 772 brcmf_dbg(TRACE, "enter\n"); 773 774 if (!request) { 775 err = -EINVAL; 776 goto exit; 777 } 778 779 if (request->n_channels) { 780 chanspecs = kcalloc(request->n_channels, sizeof(*chanspecs), 781 GFP_KERNEL); 782 if (!chanspecs) { 783 err = -ENOMEM; 784 goto exit; 785 } 786 vif = p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif; 787 if (vif) 788 dev = vif->wdev.netdev; 789 if (request->n_channels == 3 && 790 request->channels[0]->hw_value == SOCIAL_CHAN_1 && 791 request->channels[1]->hw_value == SOCIAL_CHAN_2 && 792 request->channels[2]->hw_value == SOCIAL_CHAN_3) { 793 /* SOCIAL CHANNELS 1, 6, 11 */ 794 search_state = WL_P2P_DISC_ST_SEARCH; 795 brcmf_dbg(INFO, "P2P SEARCH PHASE START\n"); 796 } else if (dev != NULL && 797 vif->wdev.iftype == NL80211_IFTYPE_P2P_GO) { 798 /* If you are already a GO, then do SEARCH only */ 799 brcmf_dbg(INFO, "Already a GO. Do SEARCH Only\n"); 800 search_state = WL_P2P_DISC_ST_SEARCH; 801 } else { 802 brcmf_dbg(INFO, "P2P SCAN STATE START\n"); 803 } 804 805 /* 806 * no P2P scanning on passive or DFS channels. 807 */ 808 for (i = 0; i < request->n_channels; i++) { 809 struct ieee80211_channel *chan = request->channels[i]; 810 811 if (chan->flags & (IEEE80211_CHAN_RADAR | 812 IEEE80211_CHAN_NO_IR)) 813 continue; 814 815 chanspecs[i] = channel_to_chanspec(&p2p->cfg->d11inf, 816 chan); 817 brcmf_dbg(INFO, "%d: chan=%d, channel spec=%x\n", 818 num_nodfs, chan->hw_value, chanspecs[i]); 819 num_nodfs++; 820 } 821 err = brcmf_p2p_escan(p2p, num_nodfs, chanspecs, search_state, 822 P2PAPI_BSSCFG_DEVICE); 823 kfree(chanspecs); 824 } 825 exit: 826 if (err) 827 brcmf_err("error (%d)\n", err); 828 return err; 829 } 830 831 832 /** 833 * brcmf_p2p_find_listen_channel() - find listen channel in ie string. 834 * 835 * @ie: string of information elements. 836 * @ie_len: length of string. 837 * 838 * Scan ie for p2p ie and look for attribute 6 channel. If available determine 839 * channel and return it. 840 */ 841 static s32 brcmf_p2p_find_listen_channel(const u8 *ie, u32 ie_len) 842 { 843 u8 channel_ie[5]; 844 s32 listen_channel; 845 s32 err; 846 847 err = cfg80211_get_p2p_attr(ie, ie_len, 848 IEEE80211_P2P_ATTR_LISTEN_CHANNEL, 849 channel_ie, sizeof(channel_ie)); 850 if (err < 0) 851 return err; 852 853 /* listen channel subel length format: */ 854 /* 3(country) + 1(op. class) + 1(chan num) */ 855 listen_channel = (s32)channel_ie[3 + 1]; 856 857 if (listen_channel == SOCIAL_CHAN_1 || 858 listen_channel == SOCIAL_CHAN_2 || 859 listen_channel == SOCIAL_CHAN_3) { 860 brcmf_dbg(INFO, "Found my Listen Channel %d\n", listen_channel); 861 return listen_channel; 862 } 863 864 return -EPERM; 865 } 866 867 868 /** 869 * brcmf_p2p_scan_prep() - prepare scan based on request. 870 * 871 * @wiphy: wiphy device. 872 * @request: scan request from cfg80211. 873 * @vif: vif on which scan request is to be executed. 874 * 875 * Prepare the scan appropriately for type of scan requested. Overrides the 876 * escan .run() callback for peer-to-peer scanning. 877 */ 878 int brcmf_p2p_scan_prep(struct wiphy *wiphy, 879 struct cfg80211_scan_request *request, 880 struct brcmf_cfg80211_vif *vif) 881 { 882 struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); 883 struct brcmf_p2p_info *p2p = &cfg->p2p; 884 int err; 885 886 if (brcmf_p2p_scan_is_p2p_request(request)) { 887 /* find my listen channel */ 888 err = brcmf_p2p_find_listen_channel(request->ie, 889 request->ie_len); 890 if (err < 0) 891 return err; 892 893 p2p->afx_hdl.my_listen_chan = err; 894 895 clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status); 896 brcmf_dbg(INFO, "P2P: GO_NEG_PHASE status cleared\n"); 897 898 err = brcmf_p2p_enable_discovery(p2p); 899 if (err) 900 return err; 901 902 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif; 903 904 /* override .run_escan() callback. */ 905 cfg->escan_info.run = brcmf_p2p_run_escan; 906 } 907 return 0; 908 } 909 910 911 /** 912 * brcmf_p2p_discover_listen() - set firmware to discover listen state. 913 * 914 * @p2p: p2p device. 915 * @channel: channel nr for discover listen. 916 * @duration: time in ms to stay on channel. 917 * 918 */ 919 static s32 920 brcmf_p2p_discover_listen(struct brcmf_p2p_info *p2p, u16 channel, u32 duration) 921 { 922 struct brcmf_cfg80211_vif *vif; 923 struct brcmu_chan ch; 924 s32 err = 0; 925 926 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif; 927 if (!vif) { 928 brcmf_err("Discovery is not set, so we have nothing to do\n"); 929 err = -EPERM; 930 goto exit; 931 } 932 933 if (test_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN, &p2p->status)) { 934 brcmf_err("Previous LISTEN is not completed yet\n"); 935 /* WAR: prevent cookie mismatch in wpa_supplicant return OK */ 936 goto exit; 937 } 938 939 ch.chnum = channel; 940 ch.bw = BRCMU_CHAN_BW_20; 941 p2p->cfg->d11inf.encchspec(&ch); 942 err = brcmf_p2p_set_discover_state(vif->ifp, WL_P2P_DISC_ST_LISTEN, 943 ch.chspec, (u16)duration); 944 if (!err) { 945 set_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN, &p2p->status); 946 p2p->remain_on_channel_cookie++; 947 } 948 exit: 949 return err; 950 } 951 952 953 /** 954 * brcmf_p2p_remain_on_channel() - put device on channel and stay there. 955 * 956 * @wiphy: wiphy device. 957 * @channel: channel to stay on. 958 * @duration: time in ms to remain on channel. 959 * 960 */ 961 int brcmf_p2p_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, 962 struct ieee80211_channel *channel, 963 unsigned int duration, u64 *cookie) 964 { 965 struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); 966 struct brcmf_p2p_info *p2p = &cfg->p2p; 967 s32 err; 968 u16 channel_nr; 969 970 channel_nr = ieee80211_frequency_to_channel(channel->center_freq); 971 brcmf_dbg(TRACE, "Enter, channel: %d, duration ms (%d)\n", channel_nr, 972 duration); 973 974 err = brcmf_p2p_enable_discovery(p2p); 975 if (err) 976 goto exit; 977 err = brcmf_p2p_discover_listen(p2p, channel_nr, duration); 978 if (err) 979 goto exit; 980 981 memcpy(&p2p->remain_on_channel, channel, sizeof(*channel)); 982 *cookie = p2p->remain_on_channel_cookie; 983 cfg80211_ready_on_channel(wdev, *cookie, channel, duration, GFP_KERNEL); 984 985 exit: 986 return err; 987 } 988 989 990 /** 991 * brcmf_p2p_notify_listen_complete() - p2p listen has completed. 992 * 993 * @ifp: interfac control. 994 * @e: event message. Not used, to make it usable for fweh event dispatcher. 995 * @data: payload of message. Not used. 996 * 997 */ 998 int brcmf_p2p_notify_listen_complete(struct brcmf_if *ifp, 999 const struct brcmf_event_msg *e, 1000 void *data) 1001 { 1002 struct brcmf_cfg80211_info *cfg = ifp->drvr->config; 1003 struct brcmf_p2p_info *p2p = &cfg->p2p; 1004 1005 brcmf_dbg(TRACE, "Enter\n"); 1006 if (test_and_clear_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN, 1007 &p2p->status)) { 1008 if (test_and_clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN, 1009 &p2p->status)) { 1010 clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, 1011 &p2p->status); 1012 brcmf_dbg(INFO, "Listen DONE, wake up wait_next_af\n"); 1013 complete(&p2p->wait_next_af); 1014 } 1015 1016 cfg80211_remain_on_channel_expired(&ifp->vif->wdev, 1017 p2p->remain_on_channel_cookie, 1018 &p2p->remain_on_channel, 1019 GFP_KERNEL); 1020 } 1021 return 0; 1022 } 1023 1024 1025 /** 1026 * brcmf_p2p_cancel_remain_on_channel() - cancel p2p listen state. 1027 * 1028 * @ifp: interfac control. 1029 * 1030 */ 1031 void brcmf_p2p_cancel_remain_on_channel(struct brcmf_if *ifp) 1032 { 1033 if (!ifp) 1034 return; 1035 brcmf_p2p_set_discover_state(ifp, WL_P2P_DISC_ST_SCAN, 0, 0); 1036 brcmf_p2p_notify_listen_complete(ifp, NULL, NULL); 1037 } 1038 1039 1040 /** 1041 * brcmf_p2p_act_frm_search() - search function for action frame. 1042 * 1043 * @p2p: p2p device. 1044 * channel: channel on which action frame is to be trasmitted. 1045 * 1046 * search function to reach at common channel to send action frame. When 1047 * channel is 0 then all social channels will be used to send af 1048 */ 1049 static s32 brcmf_p2p_act_frm_search(struct brcmf_p2p_info *p2p, u16 channel) 1050 { 1051 s32 err; 1052 u32 channel_cnt; 1053 u16 *default_chan_list; 1054 u32 i; 1055 struct brcmu_chan ch; 1056 1057 brcmf_dbg(TRACE, "Enter\n"); 1058 1059 if (channel) 1060 channel_cnt = AF_PEER_SEARCH_CNT; 1061 else 1062 channel_cnt = SOCIAL_CHAN_CNT; 1063 default_chan_list = kzalloc(channel_cnt * sizeof(*default_chan_list), 1064 GFP_KERNEL); 1065 if (default_chan_list == NULL) { 1066 brcmf_err("channel list allocation failed\n"); 1067 err = -ENOMEM; 1068 goto exit; 1069 } 1070 ch.bw = BRCMU_CHAN_BW_20; 1071 if (channel) { 1072 ch.chnum = channel; 1073 p2p->cfg->d11inf.encchspec(&ch); 1074 /* insert same channel to the chan_list */ 1075 for (i = 0; i < channel_cnt; i++) 1076 default_chan_list[i] = ch.chspec; 1077 } else { 1078 ch.chnum = SOCIAL_CHAN_1; 1079 p2p->cfg->d11inf.encchspec(&ch); 1080 default_chan_list[0] = ch.chspec; 1081 ch.chnum = SOCIAL_CHAN_2; 1082 p2p->cfg->d11inf.encchspec(&ch); 1083 default_chan_list[1] = ch.chspec; 1084 ch.chnum = SOCIAL_CHAN_3; 1085 p2p->cfg->d11inf.encchspec(&ch); 1086 default_chan_list[2] = ch.chspec; 1087 } 1088 err = brcmf_p2p_escan(p2p, channel_cnt, default_chan_list, 1089 WL_P2P_DISC_ST_SEARCH, P2PAPI_BSSCFG_DEVICE); 1090 kfree(default_chan_list); 1091 exit: 1092 return err; 1093 } 1094 1095 1096 /** 1097 * brcmf_p2p_afx_handler() - afx worker thread. 1098 * 1099 * @work: 1100 * 1101 */ 1102 static void brcmf_p2p_afx_handler(struct work_struct *work) 1103 { 1104 struct afx_hdl *afx_hdl = container_of(work, struct afx_hdl, afx_work); 1105 struct brcmf_p2p_info *p2p = container_of(afx_hdl, 1106 struct brcmf_p2p_info, 1107 afx_hdl); 1108 s32 err; 1109 1110 if (!afx_hdl->is_active) 1111 return; 1112 1113 if (afx_hdl->is_listen && afx_hdl->my_listen_chan) 1114 /* 100ms ~ 300ms */ 1115 err = brcmf_p2p_discover_listen(p2p, afx_hdl->my_listen_chan, 1116 100 * (1 + prandom_u32() % 3)); 1117 else 1118 err = brcmf_p2p_act_frm_search(p2p, afx_hdl->peer_listen_chan); 1119 1120 if (err) { 1121 brcmf_err("ERROR occurred! value is (%d)\n", err); 1122 if (test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, 1123 &p2p->status)) 1124 complete(&afx_hdl->act_frm_scan); 1125 } 1126 } 1127 1128 1129 /** 1130 * brcmf_p2p_af_searching_channel() - search channel. 1131 * 1132 * @p2p: p2p device info struct. 1133 * 1134 */ 1135 static s32 brcmf_p2p_af_searching_channel(struct brcmf_p2p_info *p2p) 1136 { 1137 struct afx_hdl *afx_hdl = &p2p->afx_hdl; 1138 struct brcmf_cfg80211_vif *pri_vif; 1139 unsigned long duration; 1140 s32 retry; 1141 1142 brcmf_dbg(TRACE, "Enter\n"); 1143 1144 pri_vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif; 1145 1146 reinit_completion(&afx_hdl->act_frm_scan); 1147 set_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status); 1148 afx_hdl->is_active = true; 1149 afx_hdl->peer_chan = P2P_INVALID_CHANNEL; 1150 1151 /* Loop to wait until we find a peer's channel or the 1152 * pending action frame tx is cancelled. 1153 */ 1154 retry = 0; 1155 duration = msecs_to_jiffies(P2P_AF_FRM_SCAN_MAX_WAIT); 1156 while ((retry < P2P_CHANNEL_SYNC_RETRY) && 1157 (afx_hdl->peer_chan == P2P_INVALID_CHANNEL)) { 1158 afx_hdl->is_listen = false; 1159 brcmf_dbg(TRACE, "Scheduling action frame for sending.. (%d)\n", 1160 retry); 1161 /* search peer on peer's listen channel */ 1162 schedule_work(&afx_hdl->afx_work); 1163 wait_for_completion_timeout(&afx_hdl->act_frm_scan, duration); 1164 if ((afx_hdl->peer_chan != P2P_INVALID_CHANNEL) || 1165 (!test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, 1166 &p2p->status))) 1167 break; 1168 1169 if (afx_hdl->my_listen_chan) { 1170 brcmf_dbg(TRACE, "Scheduling listen peer, channel=%d\n", 1171 afx_hdl->my_listen_chan); 1172 /* listen on my listen channel */ 1173 afx_hdl->is_listen = true; 1174 schedule_work(&afx_hdl->afx_work); 1175 wait_for_completion_timeout(&afx_hdl->act_frm_scan, 1176 duration); 1177 } 1178 if ((afx_hdl->peer_chan != P2P_INVALID_CHANNEL) || 1179 (!test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, 1180 &p2p->status))) 1181 break; 1182 retry++; 1183 1184 /* if sta is connected or connecting, sleep for a while before 1185 * retry af tx or finding a peer 1186 */ 1187 if (test_bit(BRCMF_VIF_STATUS_CONNECTED, &pri_vif->sme_state) || 1188 test_bit(BRCMF_VIF_STATUS_CONNECTING, &pri_vif->sme_state)) 1189 msleep(P2P_DEFAULT_SLEEP_TIME_VSDB); 1190 } 1191 1192 brcmf_dbg(TRACE, "Completed search/listen peer_chan=%d\n", 1193 afx_hdl->peer_chan); 1194 afx_hdl->is_active = false; 1195 1196 clear_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status); 1197 1198 return afx_hdl->peer_chan; 1199 } 1200 1201 1202 /** 1203 * brcmf_p2p_scan_finding_common_channel() - was escan used for finding channel 1204 * 1205 * @cfg: common configuration struct. 1206 * @bi: bss info struct, result from scan. 1207 * 1208 */ 1209 bool brcmf_p2p_scan_finding_common_channel(struct brcmf_cfg80211_info *cfg, 1210 struct brcmf_bss_info_le *bi) 1211 1212 { 1213 struct brcmf_p2p_info *p2p = &cfg->p2p; 1214 struct afx_hdl *afx_hdl = &p2p->afx_hdl; 1215 struct brcmu_chan ch; 1216 u8 *ie; 1217 s32 err; 1218 u8 p2p_dev_addr[ETH_ALEN]; 1219 1220 if (!test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status)) 1221 return false; 1222 1223 if (bi == NULL) { 1224 brcmf_dbg(TRACE, "ACTION FRAME SCAN Done\n"); 1225 if (afx_hdl->peer_chan == P2P_INVALID_CHANNEL) 1226 complete(&afx_hdl->act_frm_scan); 1227 return true; 1228 } 1229 1230 ie = ((u8 *)bi) + le16_to_cpu(bi->ie_offset); 1231 memset(p2p_dev_addr, 0, sizeof(p2p_dev_addr)); 1232 err = cfg80211_get_p2p_attr(ie, le32_to_cpu(bi->ie_length), 1233 IEEE80211_P2P_ATTR_DEVICE_INFO, 1234 p2p_dev_addr, sizeof(p2p_dev_addr)); 1235 if (err < 0) 1236 err = cfg80211_get_p2p_attr(ie, le32_to_cpu(bi->ie_length), 1237 IEEE80211_P2P_ATTR_DEVICE_ID, 1238 p2p_dev_addr, sizeof(p2p_dev_addr)); 1239 if ((err >= 0) && 1240 (ether_addr_equal(p2p_dev_addr, afx_hdl->tx_dst_addr))) { 1241 if (!bi->ctl_ch) { 1242 ch.chspec = le16_to_cpu(bi->chanspec); 1243 cfg->d11inf.decchspec(&ch); 1244 bi->ctl_ch = ch.control_ch_num; 1245 } 1246 afx_hdl->peer_chan = bi->ctl_ch; 1247 brcmf_dbg(TRACE, "ACTION FRAME SCAN : Peer %pM found, channel : %d\n", 1248 afx_hdl->tx_dst_addr, afx_hdl->peer_chan); 1249 complete(&afx_hdl->act_frm_scan); 1250 } 1251 return true; 1252 } 1253 1254 /** 1255 * brcmf_p2p_stop_wait_next_action_frame() - finish scan if af tx complete. 1256 * 1257 * @cfg: common configuration struct. 1258 * 1259 */ 1260 static void 1261 brcmf_p2p_stop_wait_next_action_frame(struct brcmf_cfg80211_info *cfg) 1262 { 1263 struct brcmf_p2p_info *p2p = &cfg->p2p; 1264 struct brcmf_if *ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp; 1265 1266 if (test_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status) && 1267 (test_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status) || 1268 test_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status))) { 1269 brcmf_dbg(TRACE, "*** Wake UP ** abort actframe iovar\n"); 1270 /* if channel is not zero, "actfame" uses off channel scan. 1271 * So abort scan for off channel completion. 1272 */ 1273 if (p2p->af_sent_channel) 1274 brcmf_notify_escan_complete(cfg, ifp, true, true); 1275 } else if (test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN, 1276 &p2p->status)) { 1277 brcmf_dbg(TRACE, "*** Wake UP ** abort listen for next af frame\n"); 1278 /* So abort scan to cancel listen */ 1279 brcmf_notify_escan_complete(cfg, ifp, true, true); 1280 } 1281 } 1282 1283 1284 /** 1285 * brcmf_p2p_gon_req_collision() - Check if go negotiaton collission 1286 * 1287 * @p2p: p2p device info struct. 1288 * 1289 * return true if recevied action frame is to be dropped. 1290 */ 1291 static bool 1292 brcmf_p2p_gon_req_collision(struct brcmf_p2p_info *p2p, u8 *mac) 1293 { 1294 struct brcmf_cfg80211_info *cfg = p2p->cfg; 1295 struct brcmf_if *ifp; 1296 1297 brcmf_dbg(TRACE, "Enter\n"); 1298 1299 if (!test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status) || 1300 !p2p->gon_req_action) 1301 return false; 1302 1303 brcmf_dbg(TRACE, "GO Negotiation Request COLLISION !!!\n"); 1304 /* if sa(peer) addr is less than da(my) addr, then this device 1305 * process peer's gon request and block to send gon req. 1306 * if not (sa addr > da addr), 1307 * this device will process gon request and drop gon req of peer. 1308 */ 1309 ifp = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif->ifp; 1310 if (memcmp(mac, ifp->mac_addr, ETH_ALEN) < 0) { 1311 brcmf_dbg(INFO, "Block transmit gon req !!!\n"); 1312 p2p->block_gon_req_tx = true; 1313 /* if we are finding a common channel for sending af, 1314 * do not scan more to block to send current gon req 1315 */ 1316 if (test_and_clear_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, 1317 &p2p->status)) 1318 complete(&p2p->afx_hdl.act_frm_scan); 1319 if (test_and_clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, 1320 &p2p->status)) 1321 brcmf_p2p_stop_wait_next_action_frame(cfg); 1322 return false; 1323 } 1324 1325 /* drop gon request of peer to process gon request by this device. */ 1326 brcmf_dbg(INFO, "Drop received gon req !!!\n"); 1327 1328 return true; 1329 } 1330 1331 1332 /** 1333 * brcmf_p2p_notify_action_frame_rx() - received action frame. 1334 * 1335 * @ifp: interfac control. 1336 * @e: event message. Not used, to make it usable for fweh event dispatcher. 1337 * @data: payload of message, containing action frame data. 1338 * 1339 */ 1340 int brcmf_p2p_notify_action_frame_rx(struct brcmf_if *ifp, 1341 const struct brcmf_event_msg *e, 1342 void *data) 1343 { 1344 struct brcmf_cfg80211_info *cfg = ifp->drvr->config; 1345 struct brcmf_p2p_info *p2p = &cfg->p2p; 1346 struct afx_hdl *afx_hdl = &p2p->afx_hdl; 1347 struct wireless_dev *wdev; 1348 u32 mgmt_frame_len = e->datalen - sizeof(struct brcmf_rx_mgmt_data); 1349 struct brcmf_rx_mgmt_data *rxframe = (struct brcmf_rx_mgmt_data *)data; 1350 u8 *frame = (u8 *)(rxframe + 1); 1351 struct brcmf_p2p_pub_act_frame *act_frm; 1352 struct brcmf_p2psd_gas_pub_act_frame *sd_act_frm; 1353 struct brcmu_chan ch; 1354 struct ieee80211_mgmt *mgmt_frame; 1355 s32 freq; 1356 u16 mgmt_type; 1357 u8 action; 1358 1359 if (e->datalen < sizeof(*rxframe)) { 1360 brcmf_dbg(SCAN, "Event data to small. Ignore\n"); 1361 return 0; 1362 } 1363 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) 1370 return 0; 1371 1372 brcmf_p2p_print_actframe(false, frame, mgmt_frame_len); 1373 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, 1381 &p2p->status) && 1382 (ether_addr_equal(afx_hdl->tx_dst_addr, e->addr))) { 1383 afx_hdl->peer_chan = ch.control_ch_num; 1384 brcmf_dbg(INFO, "GON request: Peer found, channel=%d\n", 1385 afx_hdl->peer_chan); 1386 complete(&afx_hdl->act_frm_scan); 1387 } 1388 return 0; 1389 } 1390 /* After complete GO Negotiation, roll back to mpc mode */ 1391 if ((action == P2P_PAF_GON_CONF) || 1392 (action == P2P_PAF_PROVDIS_RSP)) 1393 brcmf_set_mpc(ifp, 1); 1394 if (action == P2P_PAF_GON_CONF) { 1395 brcmf_dbg(TRACE, "P2P: GO_NEG_PHASE status cleared\n"); 1396 clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status); 1397 } 1398 } else if (brcmf_p2p_is_gas_action(frame, mgmt_frame_len)) { 1399 sd_act_frm = (struct brcmf_p2psd_gas_pub_act_frame *)frame; 1400 action = sd_act_frm->action; 1401 } 1402 1403 if (test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status) && 1404 (p2p->next_af_subtype == action)) { 1405 brcmf_dbg(TRACE, "We got a right next frame! (%d)\n", action); 1406 clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, 1407 &p2p->status); 1408 /* Stop waiting for next AF. */ 1409 brcmf_p2p_stop_wait_next_action_frame(cfg); 1410 } 1411 1412 mgmt_frame = kzalloc(offsetof(struct ieee80211_mgmt, u) + 1413 mgmt_frame_len, GFP_KERNEL); 1414 if (!mgmt_frame) { 1415 brcmf_err("No memory available for action frame\n"); 1416 return -ENOMEM; 1417 } 1418 memcpy(mgmt_frame->da, ifp->mac_addr, ETH_ALEN); 1419 brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_BSSID, mgmt_frame->bssid, 1420 ETH_ALEN); 1421 memcpy(mgmt_frame->sa, e->addr, ETH_ALEN); 1422 mgmt_frame->frame_control = cpu_to_le16(IEEE80211_STYPE_ACTION); 1423 memcpy(&mgmt_frame->u, frame, mgmt_frame_len); 1424 mgmt_frame_len += offsetof(struct ieee80211_mgmt, u); 1425 1426 freq = ieee80211_channel_to_frequency(ch.control_ch_num, 1427 ch.band == BRCMU_CHAN_BAND_2G ? 1428 NL80211_BAND_2GHZ : 1429 NL80211_BAND_5GHZ); 1430 1431 wdev = &ifp->vif->wdev; 1432 cfg80211_rx_mgmt(wdev, freq, 0, (u8 *)mgmt_frame, mgmt_frame_len, 0); 1433 1434 kfree(mgmt_frame); 1435 return 0; 1436 } 1437 1438 1439 /** 1440 * brcmf_p2p_notify_action_tx_complete() - transmit action frame complete 1441 * 1442 * @ifp: interfac control. 1443 * @e: event message. Not used, to make it usable for fweh event dispatcher. 1444 * @data: not used. 1445 * 1446 */ 1447 int brcmf_p2p_notify_action_tx_complete(struct brcmf_if *ifp, 1448 const struct brcmf_event_msg *e, 1449 void *data) 1450 { 1451 struct brcmf_cfg80211_info *cfg = ifp->drvr->config; 1452 struct brcmf_p2p_info *p2p = &cfg->p2p; 1453 1454 brcmf_dbg(INFO, "Enter: event %s, status=%d\n", 1455 e->event_code == BRCMF_E_ACTION_FRAME_OFF_CHAN_COMPLETE ? 1456 "ACTION_FRAME_OFF_CHAN_COMPLETE" : "ACTION_FRAME_COMPLETE", 1457 e->status); 1458 1459 if (!test_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status)) 1460 return 0; 1461 1462 if (e->event_code == BRCMF_E_ACTION_FRAME_COMPLETE) { 1463 if (e->status == BRCMF_E_STATUS_SUCCESS) 1464 set_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, 1465 &p2p->status); 1466 else { 1467 set_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status); 1468 /* If there is no ack, we don't need to wait for 1469 * WLC_E_ACTION_FRAME_OFFCHAN_COMPLETE event 1470 */ 1471 brcmf_p2p_stop_wait_next_action_frame(cfg); 1472 } 1473 1474 } else { 1475 complete(&p2p->send_af_done); 1476 } 1477 return 0; 1478 } 1479 1480 1481 /** 1482 * brcmf_p2p_tx_action_frame() - send action frame over fil. 1483 * 1484 * @p2p: p2p info struct for vif. 1485 * @af_params: action frame data/info. 1486 * 1487 * Send an action frame immediately without doing channel synchronization. 1488 * 1489 * This function waits for a completion event before returning. 1490 * The WLC_E_ACTION_FRAME_COMPLETE event will be received when the action 1491 * frame is transmitted. 1492 */ 1493 static s32 brcmf_p2p_tx_action_frame(struct brcmf_p2p_info *p2p, 1494 struct brcmf_fil_af_params_le *af_params) 1495 { 1496 struct brcmf_cfg80211_vif *vif; 1497 s32 err = 0; 1498 s32 timeout = 0; 1499 1500 brcmf_dbg(TRACE, "Enter\n"); 1501 1502 reinit_completion(&p2p->send_af_done); 1503 clear_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status); 1504 clear_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status); 1505 1506 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif; 1507 err = brcmf_fil_bsscfg_data_set(vif->ifp, "actframe", af_params, 1508 sizeof(*af_params)); 1509 if (err) { 1510 brcmf_err(" sending action frame has failed\n"); 1511 goto exit; 1512 } 1513 1514 p2p->af_sent_channel = le32_to_cpu(af_params->channel); 1515 p2p->af_tx_sent_jiffies = jiffies; 1516 1517 timeout = wait_for_completion_timeout(&p2p->send_af_done, 1518 P2P_AF_MAX_WAIT_TIME); 1519 1520 if (test_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status)) { 1521 brcmf_dbg(TRACE, "TX action frame operation is success\n"); 1522 } else { 1523 err = -EIO; 1524 brcmf_dbg(TRACE, "TX action frame operation has failed\n"); 1525 } 1526 /* clear status bit for action tx */ 1527 clear_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status); 1528 clear_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status); 1529 1530 exit: 1531 return err; 1532 } 1533 1534 1535 /** 1536 * brcmf_p2p_pub_af_tx() - public action frame tx routine. 1537 * 1538 * @cfg: driver private data for cfg80211 interface. 1539 * @af_params: action frame data/info. 1540 * @config_af_params: configuration data for action frame. 1541 * 1542 * routine which transmits ation frame public type. 1543 */ 1544 static s32 brcmf_p2p_pub_af_tx(struct brcmf_cfg80211_info *cfg, 1545 struct brcmf_fil_af_params_le *af_params, 1546 struct brcmf_config_af_params *config_af_params) 1547 { 1548 struct brcmf_p2p_info *p2p = &cfg->p2p; 1549 struct brcmf_fil_action_frame_le *action_frame; 1550 struct brcmf_p2p_pub_act_frame *act_frm; 1551 s32 err = 0; 1552 u16 ie_len; 1553 1554 action_frame = &af_params->action_frame; 1555 act_frm = (struct brcmf_p2p_pub_act_frame *)(action_frame->data); 1556 1557 config_af_params->extra_listen = true; 1558 1559 switch (act_frm->subtype) { 1560 case P2P_PAF_GON_REQ: 1561 brcmf_dbg(TRACE, "P2P: GO_NEG_PHASE status set\n"); 1562 set_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status); 1563 config_af_params->mpc_onoff = 0; 1564 config_af_params->search_channel = true; 1565 p2p->next_af_subtype = act_frm->subtype + 1; 1566 p2p->gon_req_action = true; 1567 /* increase dwell time to wait for RESP frame */ 1568 af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME); 1569 break; 1570 case P2P_PAF_GON_RSP: 1571 p2p->next_af_subtype = act_frm->subtype + 1; 1572 /* increase dwell time to wait for CONF frame */ 1573 af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME); 1574 break; 1575 case P2P_PAF_GON_CONF: 1576 /* If we reached till GO Neg confirmation reset the filter */ 1577 brcmf_dbg(TRACE, "P2P: GO_NEG_PHASE status cleared\n"); 1578 clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status); 1579 /* turn on mpc again if go nego is done */ 1580 config_af_params->mpc_onoff = 1; 1581 /* minimize dwell time */ 1582 af_params->dwell_time = cpu_to_le32(P2P_AF_MIN_DWELL_TIME); 1583 config_af_params->extra_listen = false; 1584 break; 1585 case P2P_PAF_INVITE_REQ: 1586 config_af_params->search_channel = true; 1587 p2p->next_af_subtype = act_frm->subtype + 1; 1588 /* increase dwell time */ 1589 af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME); 1590 break; 1591 case P2P_PAF_INVITE_RSP: 1592 /* minimize dwell time */ 1593 af_params->dwell_time = cpu_to_le32(P2P_AF_MIN_DWELL_TIME); 1594 config_af_params->extra_listen = false; 1595 break; 1596 case P2P_PAF_DEVDIS_REQ: 1597 config_af_params->search_channel = true; 1598 p2p->next_af_subtype = act_frm->subtype + 1; 1599 /* maximize dwell time to wait for RESP frame */ 1600 af_params->dwell_time = cpu_to_le32(P2P_AF_LONG_DWELL_TIME); 1601 break; 1602 case P2P_PAF_DEVDIS_RSP: 1603 /* minimize dwell time */ 1604 af_params->dwell_time = cpu_to_le32(P2P_AF_MIN_DWELL_TIME); 1605 config_af_params->extra_listen = false; 1606 break; 1607 case P2P_PAF_PROVDIS_REQ: 1608 ie_len = le16_to_cpu(action_frame->len) - 1609 offsetof(struct brcmf_p2p_pub_act_frame, elts); 1610 if (cfg80211_get_p2p_attr(&act_frm->elts[0], ie_len, 1611 IEEE80211_P2P_ATTR_GROUP_ID, 1612 NULL, 0) < 0) 1613 config_af_params->search_channel = true; 1614 config_af_params->mpc_onoff = 0; 1615 p2p->next_af_subtype = act_frm->subtype + 1; 1616 /* increase dwell time to wait for RESP frame */ 1617 af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME); 1618 break; 1619 case P2P_PAF_PROVDIS_RSP: 1620 /* wpa_supplicant send go nego req right after prov disc */ 1621 p2p->next_af_subtype = P2P_PAF_GON_REQ; 1622 /* increase dwell time to MED level */ 1623 af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME); 1624 config_af_params->extra_listen = false; 1625 break; 1626 default: 1627 brcmf_err("Unknown p2p pub act frame subtype: %d\n", 1628 act_frm->subtype); 1629 err = -EINVAL; 1630 } 1631 return err; 1632 } 1633 1634 /** 1635 * brcmf_p2p_send_action_frame() - send action frame . 1636 * 1637 * @cfg: driver private data for cfg80211 interface. 1638 * @ndev: net device to transmit on. 1639 * @af_params: configuration data for action frame. 1640 */ 1641 bool brcmf_p2p_send_action_frame(struct brcmf_cfg80211_info *cfg, 1642 struct net_device *ndev, 1643 struct brcmf_fil_af_params_le *af_params) 1644 { 1645 struct brcmf_p2p_info *p2p = &cfg->p2p; 1646 struct brcmf_if *ifp = netdev_priv(ndev); 1647 struct brcmf_fil_action_frame_le *action_frame; 1648 struct brcmf_config_af_params config_af_params; 1649 struct afx_hdl *afx_hdl = &p2p->afx_hdl; 1650 u16 action_frame_len; 1651 bool ack = false; 1652 u8 category; 1653 u8 action; 1654 s32 tx_retry; 1655 s32 extra_listen_time; 1656 uint delta_ms; 1657 1658 action_frame = &af_params->action_frame; 1659 action_frame_len = le16_to_cpu(action_frame->len); 1660 1661 brcmf_p2p_print_actframe(true, action_frame->data, action_frame_len); 1662 1663 /* Add the default dwell time. Dwell time to stay off-channel */ 1664 /* to wait for a response action frame after transmitting an */ 1665 /* GO Negotiation action frame */ 1666 af_params->dwell_time = cpu_to_le32(P2P_AF_DWELL_TIME); 1667 1668 category = action_frame->data[DOT11_ACTION_CAT_OFF]; 1669 action = action_frame->data[DOT11_ACTION_ACT_OFF]; 1670 1671 /* initialize variables */ 1672 p2p->next_af_subtype = P2P_PAF_SUBTYPE_INVALID; 1673 p2p->gon_req_action = false; 1674 1675 /* config parameters */ 1676 config_af_params.mpc_onoff = -1; 1677 config_af_params.search_channel = false; 1678 config_af_params.extra_listen = false; 1679 1680 if (brcmf_p2p_is_pub_action(action_frame->data, action_frame_len)) { 1681 /* p2p public action frame process */ 1682 if (brcmf_p2p_pub_af_tx(cfg, af_params, &config_af_params)) { 1683 /* Just send unknown subtype frame with */ 1684 /* default parameters. */ 1685 brcmf_err("P2P Public action frame, unknown subtype.\n"); 1686 } 1687 } else if (brcmf_p2p_is_gas_action(action_frame->data, 1688 action_frame_len)) { 1689 /* service discovery process */ 1690 if (action == P2PSD_ACTION_ID_GAS_IREQ || 1691 action == P2PSD_ACTION_ID_GAS_CREQ) { 1692 /* configure service discovery query frame */ 1693 config_af_params.search_channel = true; 1694 1695 /* save next af suptype to cancel */ 1696 /* remaining dwell time */ 1697 p2p->next_af_subtype = action + 1; 1698 1699 af_params->dwell_time = 1700 cpu_to_le32(P2P_AF_MED_DWELL_TIME); 1701 } else if (action == P2PSD_ACTION_ID_GAS_IRESP || 1702 action == P2PSD_ACTION_ID_GAS_CRESP) { 1703 /* configure service discovery response frame */ 1704 af_params->dwell_time = 1705 cpu_to_le32(P2P_AF_MIN_DWELL_TIME); 1706 } else { 1707 brcmf_err("Unknown action type: %d\n", action); 1708 goto exit; 1709 } 1710 } else if (brcmf_p2p_is_p2p_action(action_frame->data, 1711 action_frame_len)) { 1712 /* do not configure anything. it will be */ 1713 /* sent with a default configuration */ 1714 } else { 1715 brcmf_err("Unknown Frame: category 0x%x, action 0x%x\n", 1716 category, action); 1717 return false; 1718 } 1719 1720 /* if connecting on primary iface, sleep for a while before sending 1721 * af tx for VSDB 1722 */ 1723 if (test_bit(BRCMF_VIF_STATUS_CONNECTING, 1724 &p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->sme_state)) 1725 msleep(50); 1726 1727 /* if scan is ongoing, abort current scan. */ 1728 if (test_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status)) 1729 brcmf_abort_scanning(cfg); 1730 1731 memcpy(afx_hdl->tx_dst_addr, action_frame->da, ETH_ALEN); 1732 1733 /* To make sure to send successfully action frame, turn off mpc */ 1734 if (config_af_params.mpc_onoff == 0) 1735 brcmf_set_mpc(ifp, 0); 1736 1737 /* set status and destination address before sending af */ 1738 if (p2p->next_af_subtype != P2P_PAF_SUBTYPE_INVALID) { 1739 /* set status to cancel the remained dwell time in rx process */ 1740 set_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status); 1741 } 1742 1743 p2p->af_sent_channel = 0; 1744 set_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status); 1745 /* validate channel and p2p ies */ 1746 if (config_af_params.search_channel && 1747 IS_P2P_SOCIAL_CHANNEL(le32_to_cpu(af_params->channel)) && 1748 p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif->saved_ie.probe_req_ie_len) { 1749 afx_hdl = &p2p->afx_hdl; 1750 afx_hdl->peer_listen_chan = le32_to_cpu(af_params->channel); 1751 1752 if (brcmf_p2p_af_searching_channel(p2p) == 1753 P2P_INVALID_CHANNEL) { 1754 brcmf_err("Couldn't find peer's channel.\n"); 1755 goto exit; 1756 } 1757 1758 /* Abort scan even for VSDB scenarios. Scan gets aborted in 1759 * firmware but after the check of piggyback algorithm. To take 1760 * care of current piggback algo, lets abort the scan here 1761 * itself. 1762 */ 1763 brcmf_notify_escan_complete(cfg, ifp, true, true); 1764 1765 /* update channel */ 1766 af_params->channel = cpu_to_le32(afx_hdl->peer_chan); 1767 } 1768 1769 tx_retry = 0; 1770 while (!p2p->block_gon_req_tx && 1771 (ack == false) && (tx_retry < P2P_AF_TX_MAX_RETRY)) { 1772 ack = !brcmf_p2p_tx_action_frame(p2p, af_params); 1773 tx_retry++; 1774 } 1775 if (ack == false) { 1776 brcmf_err("Failed to send Action Frame(retry %d)\n", tx_retry); 1777 clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status); 1778 } 1779 1780 exit: 1781 clear_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status); 1782 1783 /* WAR: sometimes dongle does not keep the dwell time of 'actframe'. 1784 * if we coundn't get the next action response frame and dongle does 1785 * not keep the dwell time, go to listen state again to get next action 1786 * response frame. 1787 */ 1788 if (ack && config_af_params.extra_listen && !p2p->block_gon_req_tx && 1789 test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status) && 1790 p2p->af_sent_channel == afx_hdl->my_listen_chan) { 1791 delta_ms = jiffies_to_msecs(jiffies - p2p->af_tx_sent_jiffies); 1792 if (le32_to_cpu(af_params->dwell_time) > delta_ms) 1793 extra_listen_time = le32_to_cpu(af_params->dwell_time) - 1794 delta_ms; 1795 else 1796 extra_listen_time = 0; 1797 if (extra_listen_time > 50) { 1798 set_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN, 1799 &p2p->status); 1800 brcmf_dbg(INFO, "Wait more time! actual af time:%d, calculated extra listen:%d\n", 1801 le32_to_cpu(af_params->dwell_time), 1802 extra_listen_time); 1803 extra_listen_time += 100; 1804 if (!brcmf_p2p_discover_listen(p2p, 1805 p2p->af_sent_channel, 1806 extra_listen_time)) { 1807 unsigned long duration; 1808 1809 extra_listen_time += 100; 1810 duration = msecs_to_jiffies(extra_listen_time); 1811 wait_for_completion_timeout(&p2p->wait_next_af, 1812 duration); 1813 } 1814 clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN, 1815 &p2p->status); 1816 } 1817 } 1818 1819 if (p2p->block_gon_req_tx) { 1820 /* if ack is true, supplicant will wait more time(100ms). 1821 * so we will return it as a success to get more time . 1822 */ 1823 p2p->block_gon_req_tx = false; 1824 ack = true; 1825 } 1826 1827 clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status); 1828 /* if all done, turn mpc on again */ 1829 if (config_af_params.mpc_onoff == 1) 1830 brcmf_set_mpc(ifp, 1); 1831 1832 return ack; 1833 } 1834 1835 /** 1836 * brcmf_p2p_notify_rx_mgmt_p2p_probereq() - Event handler for p2p probe req. 1837 * 1838 * @ifp: interface pointer for which event was received. 1839 * @e: even message. 1840 * @data: payload of event message (probe request). 1841 */ 1842 s32 brcmf_p2p_notify_rx_mgmt_p2p_probereq(struct brcmf_if *ifp, 1843 const struct brcmf_event_msg *e, 1844 void *data) 1845 { 1846 struct brcmf_cfg80211_info *cfg = ifp->drvr->config; 1847 struct brcmf_p2p_info *p2p = &cfg->p2p; 1848 struct afx_hdl *afx_hdl = &p2p->afx_hdl; 1849 struct brcmf_cfg80211_vif *vif = ifp->vif; 1850 struct brcmf_rx_mgmt_data *rxframe = (struct brcmf_rx_mgmt_data *)data; 1851 struct brcmu_chan ch; 1852 u8 *mgmt_frame; 1853 u32 mgmt_frame_len; 1854 s32 freq; 1855 u16 mgmt_type; 1856 1857 brcmf_dbg(INFO, "Enter: event %d reason %d\n", e->event_code, 1858 e->reason); 1859 1860 if (e->datalen < sizeof(*rxframe)) { 1861 brcmf_dbg(SCAN, "Event data to small. Ignore\n"); 1862 return 0; 1863 } 1864 1865 ch.chspec = be16_to_cpu(rxframe->chanspec); 1866 cfg->d11inf.decchspec(&ch); 1867 1868 if (test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status) && 1869 (ether_addr_equal(afx_hdl->tx_dst_addr, e->addr))) { 1870 afx_hdl->peer_chan = ch.control_ch_num; 1871 brcmf_dbg(INFO, "PROBE REQUEST: Peer found, channel=%d\n", 1872 afx_hdl->peer_chan); 1873 complete(&afx_hdl->act_frm_scan); 1874 } 1875 1876 /* Firmware sends us two proberesponses for each idx one. At the */ 1877 /* moment anything but bsscfgidx 0 is passed up to supplicant */ 1878 if (e->bsscfgidx == 0) 1879 return 0; 1880 1881 /* Filter any P2P probe reqs arriving during the GO-NEG Phase */ 1882 if (test_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status)) { 1883 brcmf_dbg(INFO, "Filtering P2P probe_req in GO-NEG phase\n"); 1884 return 0; 1885 } 1886 1887 /* Check if wpa_supplicant has registered for this frame */ 1888 brcmf_dbg(INFO, "vif->mgmt_rx_reg %04x\n", vif->mgmt_rx_reg); 1889 mgmt_type = (IEEE80211_STYPE_PROBE_REQ & IEEE80211_FCTL_STYPE) >> 4; 1890 if ((vif->mgmt_rx_reg & BIT(mgmt_type)) == 0) 1891 return 0; 1892 1893 mgmt_frame = (u8 *)(rxframe + 1); 1894 mgmt_frame_len = e->datalen - sizeof(*rxframe); 1895 freq = ieee80211_channel_to_frequency(ch.control_ch_num, 1896 ch.band == BRCMU_CHAN_BAND_2G ? 1897 NL80211_BAND_2GHZ : 1898 NL80211_BAND_5GHZ); 1899 1900 cfg80211_rx_mgmt(&vif->wdev, freq, 0, mgmt_frame, mgmt_frame_len, 0); 1901 1902 brcmf_dbg(INFO, "mgmt_frame_len (%d) , e->datalen (%d), chanspec (%04x), freq (%d)\n", 1903 mgmt_frame_len, e->datalen, ch.chspec, freq); 1904 1905 return 0; 1906 } 1907 1908 1909 /** 1910 * brcmf_p2p_get_current_chanspec() - Get current operation channel. 1911 * 1912 * @p2p: P2P specific data. 1913 * @chanspec: chanspec to be returned. 1914 */ 1915 static void brcmf_p2p_get_current_chanspec(struct brcmf_p2p_info *p2p, 1916 u16 *chanspec) 1917 { 1918 struct brcmf_if *ifp; 1919 u8 mac_addr[ETH_ALEN]; 1920 struct brcmu_chan ch; 1921 struct brcmf_bss_info_le *bi; 1922 u8 *buf; 1923 1924 ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp; 1925 1926 if (brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_BSSID, mac_addr, 1927 ETH_ALEN) == 0) { 1928 buf = kzalloc(WL_BSS_INFO_MAX, GFP_KERNEL); 1929 if (buf != NULL) { 1930 *(__le32 *)buf = cpu_to_le32(WL_BSS_INFO_MAX); 1931 if (brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_BSS_INFO, 1932 buf, WL_BSS_INFO_MAX) == 0) { 1933 bi = (struct brcmf_bss_info_le *)(buf + 4); 1934 *chanspec = le16_to_cpu(bi->chanspec); 1935 kfree(buf); 1936 return; 1937 } 1938 kfree(buf); 1939 } 1940 } 1941 /* Use default channel for P2P */ 1942 ch.chnum = BRCMF_P2P_TEMP_CHAN; 1943 ch.bw = BRCMU_CHAN_BW_20; 1944 p2p->cfg->d11inf.encchspec(&ch); 1945 *chanspec = ch.chspec; 1946 } 1947 1948 /** 1949 * Change a P2P Role. 1950 * Parameters: 1951 * @mac: MAC address of the BSS to change a role 1952 * Returns 0 if success. 1953 */ 1954 int brcmf_p2p_ifchange(struct brcmf_cfg80211_info *cfg, 1955 enum brcmf_fil_p2p_if_types if_type) 1956 { 1957 struct brcmf_p2p_info *p2p = &cfg->p2p; 1958 struct brcmf_cfg80211_vif *vif; 1959 struct brcmf_fil_p2p_if_le if_request; 1960 s32 err; 1961 u16 chanspec; 1962 1963 brcmf_dbg(TRACE, "Enter\n"); 1964 1965 vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif; 1966 if (!vif) { 1967 brcmf_err("vif for P2PAPI_BSSCFG_PRIMARY does not exist\n"); 1968 return -EPERM; 1969 } 1970 brcmf_notify_escan_complete(cfg, vif->ifp, true, true); 1971 vif = p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif; 1972 if (!vif) { 1973 brcmf_err("vif for P2PAPI_BSSCFG_CONNECTION does not exist\n"); 1974 return -EPERM; 1975 } 1976 brcmf_set_mpc(vif->ifp, 0); 1977 1978 /* In concurrency case, STA may be already associated in a particular */ 1979 /* channel. so retrieve the current channel of primary interface and */ 1980 /* then start the virtual interface on that. */ 1981 brcmf_p2p_get_current_chanspec(p2p, &chanspec); 1982 1983 if_request.type = cpu_to_le16((u16)if_type); 1984 if_request.chspec = cpu_to_le16(chanspec); 1985 memcpy(if_request.addr, p2p->int_addr, sizeof(if_request.addr)); 1986 1987 brcmf_cfg80211_arm_vif_event(cfg, vif); 1988 err = brcmf_fil_iovar_data_set(vif->ifp, "p2p_ifupd", &if_request, 1989 sizeof(if_request)); 1990 if (err) { 1991 brcmf_err("p2p_ifupd FAILED, err=%d\n", err); 1992 brcmf_cfg80211_arm_vif_event(cfg, NULL); 1993 return err; 1994 } 1995 err = brcmf_cfg80211_wait_vif_event(cfg, BRCMF_E_IF_CHANGE, 1996 BRCMF_VIF_EVENT_TIMEOUT); 1997 brcmf_cfg80211_arm_vif_event(cfg, NULL); 1998 if (!err) { 1999 brcmf_err("No BRCMF_E_IF_CHANGE event received\n"); 2000 return -EIO; 2001 } 2002 2003 err = brcmf_fil_cmd_int_set(vif->ifp, BRCMF_C_SET_SCB_TIMEOUT, 2004 BRCMF_SCB_TIMEOUT_VALUE); 2005 2006 return err; 2007 } 2008 2009 static int brcmf_p2p_request_p2p_if(struct brcmf_p2p_info *p2p, 2010 struct brcmf_if *ifp, u8 ea[ETH_ALEN], 2011 enum brcmf_fil_p2p_if_types iftype) 2012 { 2013 struct brcmf_fil_p2p_if_le if_request; 2014 int err; 2015 u16 chanspec; 2016 2017 /* we need a default channel */ 2018 brcmf_p2p_get_current_chanspec(p2p, &chanspec); 2019 2020 /* fill the firmware request */ 2021 memcpy(if_request.addr, ea, ETH_ALEN); 2022 if_request.type = cpu_to_le16((u16)iftype); 2023 if_request.chspec = cpu_to_le16(chanspec); 2024 2025 err = brcmf_fil_iovar_data_set(ifp, "p2p_ifadd", &if_request, 2026 sizeof(if_request)); 2027 2028 return err; 2029 } 2030 2031 static int brcmf_p2p_disable_p2p_if(struct brcmf_cfg80211_vif *vif) 2032 { 2033 struct brcmf_cfg80211_info *cfg = wdev_to_cfg(&vif->wdev); 2034 struct net_device *pri_ndev = cfg_to_ndev(cfg); 2035 struct brcmf_if *ifp = netdev_priv(pri_ndev); 2036 u8 *addr = vif->wdev.netdev->dev_addr; 2037 2038 return brcmf_fil_iovar_data_set(ifp, "p2p_ifdis", addr, ETH_ALEN); 2039 } 2040 2041 static int brcmf_p2p_release_p2p_if(struct brcmf_cfg80211_vif *vif) 2042 { 2043 struct brcmf_cfg80211_info *cfg = wdev_to_cfg(&vif->wdev); 2044 struct net_device *pri_ndev = cfg_to_ndev(cfg); 2045 struct brcmf_if *ifp = netdev_priv(pri_ndev); 2046 u8 *addr = vif->wdev.netdev->dev_addr; 2047 2048 return brcmf_fil_iovar_data_set(ifp, "p2p_ifdel", addr, ETH_ALEN); 2049 } 2050 2051 /** 2052 * brcmf_p2p_create_p2pdev() - create a P2P_DEVICE virtual interface. 2053 * 2054 * @p2p: P2P specific data. 2055 * @wiphy: wiphy device of new interface. 2056 * @addr: mac address for this new interface. 2057 */ 2058 static struct wireless_dev *brcmf_p2p_create_p2pdev(struct brcmf_p2p_info *p2p, 2059 struct wiphy *wiphy, 2060 u8 *addr) 2061 { 2062 struct brcmf_cfg80211_vif *p2p_vif; 2063 struct brcmf_if *p2p_ifp; 2064 struct brcmf_if *pri_ifp; 2065 int err; 2066 u32 bsscfgidx; 2067 2068 if (p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif) 2069 return ERR_PTR(-ENOSPC); 2070 2071 p2p_vif = brcmf_alloc_vif(p2p->cfg, NL80211_IFTYPE_P2P_DEVICE); 2072 if (IS_ERR(p2p_vif)) { 2073 brcmf_err("could not create discovery vif\n"); 2074 return (struct wireless_dev *)p2p_vif; 2075 } 2076 2077 pri_ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp; 2078 brcmf_p2p_generate_bss_mac(p2p, addr); 2079 brcmf_p2p_set_firmware(pri_ifp, p2p->dev_addr); 2080 2081 brcmf_cfg80211_arm_vif_event(p2p->cfg, p2p_vif); 2082 brcmf_fweh_p2pdev_setup(pri_ifp, true); 2083 2084 /* Initialize P2P Discovery in the firmware */ 2085 err = brcmf_fil_iovar_int_set(pri_ifp, "p2p_disc", 1); 2086 if (err < 0) { 2087 brcmf_err("set p2p_disc error\n"); 2088 brcmf_fweh_p2pdev_setup(pri_ifp, false); 2089 brcmf_cfg80211_arm_vif_event(p2p->cfg, NULL); 2090 goto fail; 2091 } 2092 2093 /* wait for firmware event */ 2094 err = brcmf_cfg80211_wait_vif_event(p2p->cfg, BRCMF_E_IF_ADD, 2095 BRCMF_VIF_EVENT_TIMEOUT); 2096 brcmf_cfg80211_arm_vif_event(p2p->cfg, NULL); 2097 brcmf_fweh_p2pdev_setup(pri_ifp, false); 2098 if (!err) { 2099 brcmf_err("timeout occurred\n"); 2100 err = -EIO; 2101 goto fail; 2102 } 2103 2104 /* discovery interface created */ 2105 p2p_ifp = p2p_vif->ifp; 2106 p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif = p2p_vif; 2107 memcpy(p2p_ifp->mac_addr, p2p->dev_addr, ETH_ALEN); 2108 memcpy(&p2p_vif->wdev.address, p2p->dev_addr, sizeof(p2p->dev_addr)); 2109 2110 /* verify bsscfg index for P2P discovery */ 2111 err = brcmf_fil_iovar_int_get(pri_ifp, "p2p_dev", &bsscfgidx); 2112 if (err < 0) { 2113 brcmf_err("retrieving discover bsscfg index failed\n"); 2114 goto fail; 2115 } 2116 2117 WARN_ON(p2p_ifp->bsscfgidx != bsscfgidx); 2118 2119 init_completion(&p2p->send_af_done); 2120 INIT_WORK(&p2p->afx_hdl.afx_work, brcmf_p2p_afx_handler); 2121 init_completion(&p2p->afx_hdl.act_frm_scan); 2122 init_completion(&p2p->wait_next_af); 2123 2124 return &p2p_vif->wdev; 2125 2126 fail: 2127 brcmf_free_vif(p2p_vif); 2128 return ERR_PTR(err); 2129 } 2130 2131 /** 2132 * brcmf_p2p_add_vif() - create a new P2P virtual interface. 2133 * 2134 * @wiphy: wiphy device of new interface. 2135 * @name: name of the new interface. 2136 * @name_assign_type: origin of the interface name 2137 * @type: nl80211 interface type. 2138 * @params: contains mac address for P2P device. 2139 */ 2140 struct wireless_dev *brcmf_p2p_add_vif(struct wiphy *wiphy, const char *name, 2141 unsigned char name_assign_type, 2142 enum nl80211_iftype type, 2143 struct vif_params *params) 2144 { 2145 struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); 2146 struct brcmf_if *ifp = netdev_priv(cfg_to_ndev(cfg)); 2147 struct brcmf_cfg80211_vif *vif; 2148 enum brcmf_fil_p2p_if_types iftype; 2149 int err; 2150 2151 if (brcmf_cfg80211_vif_event_armed(cfg)) 2152 return ERR_PTR(-EBUSY); 2153 2154 brcmf_dbg(INFO, "adding vif \"%s\" (type=%d)\n", name, type); 2155 2156 switch (type) { 2157 case NL80211_IFTYPE_P2P_CLIENT: 2158 iftype = BRCMF_FIL_P2P_IF_CLIENT; 2159 break; 2160 case NL80211_IFTYPE_P2P_GO: 2161 iftype = BRCMF_FIL_P2P_IF_GO; 2162 break; 2163 case NL80211_IFTYPE_P2P_DEVICE: 2164 return brcmf_p2p_create_p2pdev(&cfg->p2p, wiphy, 2165 params->macaddr); 2166 default: 2167 return ERR_PTR(-EOPNOTSUPP); 2168 } 2169 2170 vif = brcmf_alloc_vif(cfg, type); 2171 if (IS_ERR(vif)) 2172 return (struct wireless_dev *)vif; 2173 brcmf_cfg80211_arm_vif_event(cfg, vif); 2174 2175 err = brcmf_p2p_request_p2p_if(&cfg->p2p, ifp, cfg->p2p.int_addr, 2176 iftype); 2177 if (err) { 2178 brcmf_cfg80211_arm_vif_event(cfg, NULL); 2179 goto fail; 2180 } 2181 2182 /* wait for firmware event */ 2183 err = brcmf_cfg80211_wait_vif_event(cfg, BRCMF_E_IF_ADD, 2184 BRCMF_VIF_EVENT_TIMEOUT); 2185 brcmf_cfg80211_arm_vif_event(cfg, NULL); 2186 if (!err) { 2187 brcmf_err("timeout occurred\n"); 2188 err = -EIO; 2189 goto fail; 2190 } 2191 2192 /* interface created in firmware */ 2193 ifp = vif->ifp; 2194 if (!ifp) { 2195 brcmf_err("no if pointer provided\n"); 2196 err = -ENOENT; 2197 goto fail; 2198 } 2199 2200 strncpy(ifp->ndev->name, name, sizeof(ifp->ndev->name) - 1); 2201 ifp->ndev->name_assign_type = name_assign_type; 2202 err = brcmf_net_attach(ifp, true); 2203 if (err) { 2204 brcmf_err("Registering netdevice failed\n"); 2205 free_netdev(ifp->ndev); 2206 goto fail; 2207 } 2208 2209 cfg->p2p.bss_idx[P2PAPI_BSSCFG_CONNECTION].vif = vif; 2210 /* Disable firmware roaming for P2P interface */ 2211 brcmf_fil_iovar_int_set(ifp, "roam_off", 1); 2212 if (iftype == BRCMF_FIL_P2P_IF_GO) { 2213 /* set station timeout for p2p */ 2214 brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCB_TIMEOUT, 2215 BRCMF_SCB_TIMEOUT_VALUE); 2216 } 2217 return &ifp->vif->wdev; 2218 2219 fail: 2220 brcmf_free_vif(vif); 2221 return ERR_PTR(err); 2222 } 2223 2224 /** 2225 * brcmf_p2p_del_vif() - delete a P2P virtual interface. 2226 * 2227 * @wiphy: wiphy device of interface. 2228 * @wdev: wireless device of interface. 2229 */ 2230 int brcmf_p2p_del_vif(struct wiphy *wiphy, struct wireless_dev *wdev) 2231 { 2232 struct brcmf_cfg80211_info *cfg = wiphy_priv(wiphy); 2233 struct brcmf_p2p_info *p2p = &cfg->p2p; 2234 struct brcmf_cfg80211_vif *vif; 2235 enum nl80211_iftype iftype; 2236 bool wait_for_disable = false; 2237 int err; 2238 2239 brcmf_dbg(TRACE, "delete P2P vif\n"); 2240 vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev); 2241 2242 iftype = vif->wdev.iftype; 2243 brcmf_cfg80211_arm_vif_event(cfg, vif); 2244 switch (iftype) { 2245 case NL80211_IFTYPE_P2P_CLIENT: 2246 if (test_bit(BRCMF_VIF_STATUS_DISCONNECTING, &vif->sme_state)) 2247 wait_for_disable = true; 2248 break; 2249 2250 case NL80211_IFTYPE_P2P_GO: 2251 if (!brcmf_p2p_disable_p2p_if(vif)) 2252 wait_for_disable = true; 2253 break; 2254 2255 case NL80211_IFTYPE_P2P_DEVICE: 2256 if (!p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif) 2257 return 0; 2258 brcmf_p2p_cancel_remain_on_channel(vif->ifp); 2259 brcmf_p2p_deinit_discovery(p2p); 2260 break; 2261 2262 default: 2263 return -ENOTSUPP; 2264 } 2265 2266 clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status); 2267 brcmf_dbg(INFO, "P2P: GO_NEG_PHASE status cleared\n"); 2268 2269 if (wait_for_disable) 2270 wait_for_completion_timeout(&cfg->vif_disabled, 2271 BRCMF_P2P_DISABLE_TIMEOUT); 2272 2273 err = 0; 2274 if (iftype != NL80211_IFTYPE_P2P_DEVICE) { 2275 brcmf_vif_clear_mgmt_ies(vif); 2276 err = brcmf_p2p_release_p2p_if(vif); 2277 } 2278 if (!err) { 2279 /* wait for firmware event */ 2280 err = brcmf_cfg80211_wait_vif_event(cfg, BRCMF_E_IF_DEL, 2281 BRCMF_VIF_EVENT_TIMEOUT); 2282 if (!err) 2283 err = -EIO; 2284 else 2285 err = 0; 2286 } 2287 brcmf_remove_interface(vif->ifp, true); 2288 2289 brcmf_cfg80211_arm_vif_event(cfg, NULL); 2290 if (iftype != NL80211_IFTYPE_P2P_DEVICE) 2291 p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif = NULL; 2292 2293 return err; 2294 } 2295 2296 void brcmf_p2p_ifp_removed(struct brcmf_if *ifp, bool rtnl_locked) 2297 { 2298 struct brcmf_cfg80211_info *cfg; 2299 struct brcmf_cfg80211_vif *vif; 2300 2301 brcmf_dbg(INFO, "P2P: device interface removed\n"); 2302 vif = ifp->vif; 2303 cfg = wdev_to_cfg(&vif->wdev); 2304 cfg->p2p.bss_idx[P2PAPI_BSSCFG_DEVICE].vif = NULL; 2305 if (!rtnl_locked) 2306 rtnl_lock(); 2307 cfg80211_unregister_wdev(&vif->wdev); 2308 if (!rtnl_locked) 2309 rtnl_unlock(); 2310 brcmf_free_vif(vif); 2311 } 2312 2313 int brcmf_p2p_start_device(struct wiphy *wiphy, struct wireless_dev *wdev) 2314 { 2315 struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); 2316 struct brcmf_p2p_info *p2p = &cfg->p2p; 2317 struct brcmf_cfg80211_vif *vif; 2318 int err; 2319 2320 vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev); 2321 mutex_lock(&cfg->usr_sync); 2322 err = brcmf_p2p_enable_discovery(p2p); 2323 if (!err) 2324 set_bit(BRCMF_VIF_STATUS_READY, &vif->sme_state); 2325 mutex_unlock(&cfg->usr_sync); 2326 return err; 2327 } 2328 2329 void brcmf_p2p_stop_device(struct wiphy *wiphy, struct wireless_dev *wdev) 2330 { 2331 struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); 2332 struct brcmf_p2p_info *p2p = &cfg->p2p; 2333 struct brcmf_cfg80211_vif *vif; 2334 2335 vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev); 2336 /* This call can be result of the unregister_wdev call. In that case 2337 * we dont want to do anything anymore. Just return. The config vif 2338 * will have been cleared at this point. 2339 */ 2340 if (p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif == vif) { 2341 mutex_lock(&cfg->usr_sync); 2342 /* Set the discovery state to SCAN */ 2343 (void)brcmf_p2p_set_discover_state(vif->ifp, 2344 WL_P2P_DISC_ST_SCAN, 0, 0); 2345 brcmf_abort_scanning(cfg); 2346 clear_bit(BRCMF_VIF_STATUS_READY, &vif->sme_state); 2347 mutex_unlock(&cfg->usr_sync); 2348 } 2349 } 2350 2351 /** 2352 * brcmf_p2p_attach() - attach for P2P. 2353 * 2354 * @cfg: driver private data for cfg80211 interface. 2355 * @p2pdev_forced: create p2p device interface at attach. 2356 */ 2357 s32 brcmf_p2p_attach(struct brcmf_cfg80211_info *cfg, bool p2pdev_forced) 2358 { 2359 struct brcmf_p2p_info *p2p; 2360 struct brcmf_if *pri_ifp; 2361 s32 err = 0; 2362 void *err_ptr; 2363 2364 p2p = &cfg->p2p; 2365 p2p->cfg = cfg; 2366 2367 pri_ifp = brcmf_get_ifp(cfg->pub, 0); 2368 p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif = pri_ifp->vif; 2369 2370 if (p2pdev_forced) { 2371 err_ptr = brcmf_p2p_create_p2pdev(p2p, NULL, NULL); 2372 if (IS_ERR(err_ptr)) { 2373 brcmf_err("P2P device creation failed.\n"); 2374 err = PTR_ERR(err_ptr); 2375 } 2376 } else { 2377 p2p->p2pdev_dynamically = true; 2378 } 2379 return err; 2380 } 2381 2382 /** 2383 * brcmf_p2p_detach() - detach P2P. 2384 * 2385 * @p2p: P2P specific data. 2386 */ 2387 void brcmf_p2p_detach(struct brcmf_p2p_info *p2p) 2388 { 2389 struct brcmf_cfg80211_vif *vif; 2390 2391 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif; 2392 if (vif != NULL) { 2393 brcmf_p2p_cancel_remain_on_channel(vif->ifp); 2394 brcmf_p2p_deinit_discovery(p2p); 2395 brcmf_remove_interface(vif->ifp, false); 2396 } 2397 /* just set it all to zero */ 2398 memset(p2p, 0, sizeof(*p2p)); 2399 } 2400 2401