2547 lines · c
1// SPDX-License-Identifier: ISC2/*3 * Copyright (c) 2012 Broadcom Corporation4 */5#include <linux/slab.h>6#include <linux/netdevice.h>7#include <linux/etherdevice.h>8#include <linux/rtnetlink.h>9#include <net/cfg80211.h>10 11#include <brcmu_wifi.h>12#include <brcmu_utils.h>13#include <defs.h>14#include "core.h"15#include "debug.h"16#include "fwil.h"17#include "fwil_types.h"18#include "p2p.h"19#include "cfg80211.h"20#include "feature.h"21 22/* parameters used for p2p escan */23#define P2PAPI_SCAN_NPROBES 124#define P2PAPI_SCAN_DWELL_TIME_MS 8025#define P2PAPI_SCAN_SOCIAL_DWELL_TIME_MS 4026#define P2PAPI_SCAN_HOME_TIME_MS 6027#define P2PAPI_SCAN_NPROBS_TIME_MS 3028#define P2PAPI_SCAN_AF_SEARCH_DWELL_TIME_MS 10029#define WL_SCAN_CONNECT_DWELL_TIME_MS 20030#define WL_SCAN_JOIN_PROBE_INTERVAL_MS 2031 32#define BRCMF_P2P_WILDCARD_SSID "DIRECT-"33#define BRCMF_P2P_WILDCARD_SSID_LEN (sizeof(BRCMF_P2P_WILDCARD_SSID) - 1)34 35#define SOCIAL_CHAN_1 136#define SOCIAL_CHAN_2 637#define SOCIAL_CHAN_3 1138#define IS_P2P_SOCIAL_CHANNEL(channel) ((channel == SOCIAL_CHAN_1) || \39 (channel == SOCIAL_CHAN_2) || \40 (channel == SOCIAL_CHAN_3))41#define BRCMF_P2P_TEMP_CHAN SOCIAL_CHAN_342#define SOCIAL_CHAN_CNT 343#define AF_PEER_SEARCH_CNT 244 45#define BRCMF_SCB_TIMEOUT_VALUE 2046 47#define P2P_VER 9 /* P2P version: 9=WiFi P2P v1.0 */48#define P2P_PUB_AF_CATEGORY 0x0449#define P2P_PUB_AF_ACTION 0x0950#define P2P_AF_CATEGORY 0x7f51#define P2P_OUI "\x50\x6F\x9A" /* P2P OUI */52#define P2P_OUI_LEN 3 /* P2P OUI length */53 54/* Action Frame Constants */55#define DOT11_ACTION_HDR_LEN 2 /* action frame category + action */56#define DOT11_ACTION_CAT_OFF 0 /* category offset */57#define DOT11_ACTION_ACT_OFF 1 /* action offset */58 59#define P2P_AF_DWELL_TIME 20060#define P2P_AF_MIN_DWELL_TIME 10061#define P2P_AF_MED_DWELL_TIME 40062#define P2P_AF_LONG_DWELL_TIME 100063#define P2P_AF_TX_MAX_RETRY 564#define P2P_AF_MAX_WAIT_TIME msecs_to_jiffies(2000)65#define P2P_INVALID_CHANNEL -166#define P2P_CHANNEL_SYNC_RETRY 567#define P2P_AF_FRM_SCAN_MAX_WAIT msecs_to_jiffies(450)68#define P2P_DEFAULT_SLEEP_TIME_VSDB 20069#define P2P_AF_RETRY_DELAY_TIME 4070 71/* WiFi P2P Public Action Frame OUI Subtypes */72#define P2P_PAF_GON_REQ 0 /* Group Owner Negotiation Req */73#define P2P_PAF_GON_RSP 1 /* Group Owner Negotiation Rsp */74#define P2P_PAF_GON_CONF 2 /* Group Owner Negotiation Confirm */75#define P2P_PAF_INVITE_REQ 3 /* P2P Invitation Request */76#define P2P_PAF_INVITE_RSP 4 /* P2P Invitation Response */77#define P2P_PAF_DEVDIS_REQ 5 /* Device Discoverability Request */78#define P2P_PAF_DEVDIS_RSP 6 /* Device Discoverability Response */79#define P2P_PAF_PROVDIS_REQ 7 /* Provision Discovery Request */80#define P2P_PAF_PROVDIS_RSP 8 /* Provision Discovery Response */81#define P2P_PAF_SUBTYPE_INVALID 255 /* Invalid Subtype */82 83/* WiFi P2P Action Frame OUI Subtypes */84#define P2P_AF_NOTICE_OF_ABSENCE 0 /* Notice of Absence */85#define P2P_AF_PRESENCE_REQ 1 /* P2P Presence Request */86#define P2P_AF_PRESENCE_RSP 2 /* P2P Presence Response */87#define P2P_AF_GO_DISC_REQ 3 /* GO Discoverability Request */88 89/* P2P Service Discovery related */90#define P2PSD_ACTION_CATEGORY 0x04 /* Public action frame */91#define P2PSD_ACTION_ID_GAS_IREQ 0x0a /* GAS Initial Request AF */92#define P2PSD_ACTION_ID_GAS_IRESP 0x0b /* GAS Initial Response AF */93#define P2PSD_ACTION_ID_GAS_CREQ 0x0c /* GAS Comeback Request AF */94#define P2PSD_ACTION_ID_GAS_CRESP 0x0d /* GAS Comeback Response AF */95 96#define BRCMF_P2P_DISABLE_TIMEOUT msecs_to_jiffies(500)97 98/* Mask for retry counter of custom dwell time */99#define CUSTOM_RETRY_MASK 0xff000000100/**101 * struct brcmf_p2p_disc_st_le - set discovery state in firmware.102 *103 * @state: requested discovery state (see enum brcmf_p2p_disc_state).104 * @chspec: channel parameter for %WL_P2P_DISC_ST_LISTEN state.105 * @dwell: dwell time in ms for %WL_P2P_DISC_ST_LISTEN state.106 */107struct brcmf_p2p_disc_st_le {108 u8 state;109 __le16 chspec;110 __le16 dwell;111};112 113/**114 * enum brcmf_p2p_disc_state - P2P discovery state values115 *116 * @WL_P2P_DISC_ST_SCAN: P2P discovery with wildcard SSID and P2P IE.117 * @WL_P2P_DISC_ST_LISTEN: P2P discovery off-channel for specified time.118 * @WL_P2P_DISC_ST_SEARCH: P2P discovery with P2P wildcard SSID and P2P IE.119 */120enum brcmf_p2p_disc_state {121 WL_P2P_DISC_ST_SCAN,122 WL_P2P_DISC_ST_LISTEN,123 WL_P2P_DISC_ST_SEARCH124};125 126/**127 * struct brcmf_p2p_scan_le - P2P specific scan request.128 *129 * @type: type of scan method requested (values: 'E' or 'S').130 * @reserved: reserved (ignored).131 * @eparams: parameters used for type 'E'.132 * @sparams: parameters used for type 'S'.133 */134struct brcmf_p2p_scan_le {135 u8 type;136 u8 reserved[3];137 union {138 struct brcmf_escan_params_le eparams;139 struct brcmf_scan_params_le sparams;140 };141};142 143/**144 * struct brcmf_p2p_pub_act_frame - WiFi P2P Public Action Frame145 *146 * @category: P2P_PUB_AF_CATEGORY147 * @action: P2P_PUB_AF_ACTION148 * @oui: P2P_OUI149 * @oui_type: OUI type - P2P_VER150 * @subtype: OUI subtype - P2P_TYPE_*151 * @dialog_token: nonzero, identifies req/rsp transaction152 * @elts: Variable length information elements.153 */154struct brcmf_p2p_pub_act_frame {155 u8 category;156 u8 action;157 u8 oui[3];158 u8 oui_type;159 u8 subtype;160 u8 dialog_token;161 u8 elts[];162};163 164/**165 * struct brcmf_p2p_action_frame - WiFi P2P Action Frame166 *167 * @category: P2P_AF_CATEGORY168 * @oui: OUI - P2P_OUI169 * @type: OUI Type - P2P_VER170 * @subtype: OUI Subtype - P2P_AF_*171 * @dialog_token: nonzero, identifies req/resp tranaction172 * @elts: Variable length information elements.173 */174struct brcmf_p2p_action_frame {175 u8 category;176 u8 oui[3];177 u8 type;178 u8 subtype;179 u8 dialog_token;180 u8 elts[];181};182 183/**184 * struct brcmf_p2psd_gas_pub_act_frame - Wi-Fi GAS Public Action Frame185 *186 * @category: 0x04 Public Action Frame187 * @action: 0x6c Advertisement Protocol188 * @dialog_token: nonzero, identifies req/rsp transaction189 * @query_data: Query Data. SD gas ireq SD gas iresp190 */191struct brcmf_p2psd_gas_pub_act_frame {192 u8 category;193 u8 action;194 u8 dialog_token;195 u8 query_data[];196};197 198/**199 * struct brcmf_config_af_params - Action Frame Parameters for tx.200 *201 * @mpc_onoff: To make sure to send successfully action frame, we have to202 * turn off mpc 0: off, 1: on, (-1): do nothing203 * @search_channel: 1: search peer's channel to send af204 * @extra_listen: keep the dwell time to get af response frame.205 */206struct brcmf_config_af_params {207 s32 mpc_onoff;208 bool search_channel;209 bool extra_listen;210};211 212/**213 * brcmf_p2p_is_pub_action() - true if p2p public type frame.214 *215 * @frame: action frame data.216 * @frame_len: length of action frame data.217 *218 * Determine if action frame is p2p public action type219 */220static bool brcmf_p2p_is_pub_action(void *frame, u32 frame_len)221{222 struct brcmf_p2p_pub_act_frame *pact_frm;223 224 if (frame == NULL)225 return false;226 227 pact_frm = (struct brcmf_p2p_pub_act_frame *)frame;228 if (frame_len < sizeof(*pact_frm))229 return false;230 231 if (pact_frm->category == P2P_PUB_AF_CATEGORY &&232 pact_frm->action == P2P_PUB_AF_ACTION &&233 pact_frm->oui_type == P2P_VER &&234 memcmp(pact_frm->oui, P2P_OUI, P2P_OUI_LEN) == 0)235 return true;236 237 return false;238}239 240/**241 * brcmf_p2p_is_p2p_action() - true if p2p action type frame.242 *243 * @frame: action frame data.244 * @frame_len: length of action frame data.245 *246 * Determine if action frame is p2p action type247 */248static bool brcmf_p2p_is_p2p_action(void *frame, u32 frame_len)249{250 struct brcmf_p2p_action_frame *act_frm;251 252 if (frame == NULL)253 return false;254 255 act_frm = (struct brcmf_p2p_action_frame *)frame;256 if (frame_len < sizeof(*act_frm))257 return false;258 259 if (act_frm->category == P2P_AF_CATEGORY &&260 act_frm->type == P2P_VER &&261 memcmp(act_frm->oui, P2P_OUI, P2P_OUI_LEN) == 0)262 return true;263 264 return false;265}266 267/**268 * brcmf_p2p_is_gas_action() - true if p2p gas action type frame.269 *270 * @frame: action frame data.271 * @frame_len: length of action frame data.272 *273 * Determine if action frame is p2p gas action type274 */275static bool brcmf_p2p_is_gas_action(void *frame, u32 frame_len)276{277 struct brcmf_p2psd_gas_pub_act_frame *sd_act_frm;278 279 if (frame == NULL)280 return false;281 282 sd_act_frm = (struct brcmf_p2psd_gas_pub_act_frame *)frame;283 if (frame_len < sizeof(*sd_act_frm))284 return false;285 286 if (sd_act_frm->category != P2PSD_ACTION_CATEGORY)287 return false;288 289 if (sd_act_frm->action == P2PSD_ACTION_ID_GAS_IREQ ||290 sd_act_frm->action == P2PSD_ACTION_ID_GAS_IRESP ||291 sd_act_frm->action == P2PSD_ACTION_ID_GAS_CREQ ||292 sd_act_frm->action == P2PSD_ACTION_ID_GAS_CRESP)293 return true;294 295 return false;296}297 298/**299 * brcmf_p2p_print_actframe() - debug print routine.300 *301 * @tx: Received or to be transmitted302 * @frame: action frame data.303 * @frame_len: length of action frame data.304 *305 * Print information about the p2p action frame306 */307 308#ifdef DEBUG309 310static void brcmf_p2p_print_actframe(bool tx, void *frame, u32 frame_len)311{312 struct brcmf_p2p_pub_act_frame *pact_frm;313 struct brcmf_p2p_action_frame *act_frm;314 struct brcmf_p2psd_gas_pub_act_frame *sd_act_frm;315 316 if (!frame || frame_len <= 2)317 return;318 319 if (brcmf_p2p_is_pub_action(frame, frame_len)) {320 pact_frm = (struct brcmf_p2p_pub_act_frame *)frame;321 switch (pact_frm->subtype) {322 case P2P_PAF_GON_REQ:323 brcmf_dbg(TRACE, "%s P2P Group Owner Negotiation Req Frame\n",324 (tx) ? "TX" : "RX");325 break;326 case P2P_PAF_GON_RSP:327 brcmf_dbg(TRACE, "%s P2P Group Owner Negotiation Rsp Frame\n",328 (tx) ? "TX" : "RX");329 break;330 case P2P_PAF_GON_CONF:331 brcmf_dbg(TRACE, "%s P2P Group Owner Negotiation Confirm Frame\n",332 (tx) ? "TX" : "RX");333 break;334 case P2P_PAF_INVITE_REQ:335 brcmf_dbg(TRACE, "%s P2P Invitation Request Frame\n",336 (tx) ? "TX" : "RX");337 break;338 case P2P_PAF_INVITE_RSP:339 brcmf_dbg(TRACE, "%s P2P Invitation Response Frame\n",340 (tx) ? "TX" : "RX");341 break;342 case P2P_PAF_DEVDIS_REQ:343 brcmf_dbg(TRACE, "%s P2P Device Discoverability Request Frame\n",344 (tx) ? "TX" : "RX");345 break;346 case P2P_PAF_DEVDIS_RSP:347 brcmf_dbg(TRACE, "%s P2P Device Discoverability Response Frame\n",348 (tx) ? "TX" : "RX");349 break;350 case P2P_PAF_PROVDIS_REQ:351 brcmf_dbg(TRACE, "%s P2P Provision Discovery Request Frame\n",352 (tx) ? "TX" : "RX");353 break;354 case P2P_PAF_PROVDIS_RSP:355 brcmf_dbg(TRACE, "%s P2P Provision Discovery Response Frame\n",356 (tx) ? "TX" : "RX");357 break;358 default:359 brcmf_dbg(TRACE, "%s Unknown P2P Public Action Frame\n",360 (tx) ? "TX" : "RX");361 break;362 }363 } else if (brcmf_p2p_is_p2p_action(frame, frame_len)) {364 act_frm = (struct brcmf_p2p_action_frame *)frame;365 switch (act_frm->subtype) {366 case P2P_AF_NOTICE_OF_ABSENCE:367 brcmf_dbg(TRACE, "%s P2P Notice of Absence Frame\n",368 (tx) ? "TX" : "RX");369 break;370 case P2P_AF_PRESENCE_REQ:371 brcmf_dbg(TRACE, "%s P2P Presence Request Frame\n",372 (tx) ? "TX" : "RX");373 break;374 case P2P_AF_PRESENCE_RSP:375 brcmf_dbg(TRACE, "%s P2P Presence Response Frame\n",376 (tx) ? "TX" : "RX");377 break;378 case P2P_AF_GO_DISC_REQ:379 brcmf_dbg(TRACE, "%s P2P Discoverability Request Frame\n",380 (tx) ? "TX" : "RX");381 break;382 default:383 brcmf_dbg(TRACE, "%s Unknown P2P Action Frame\n",384 (tx) ? "TX" : "RX");385 }386 387 } else if (brcmf_p2p_is_gas_action(frame, frame_len)) {388 sd_act_frm = (struct brcmf_p2psd_gas_pub_act_frame *)frame;389 switch (sd_act_frm->action) {390 case P2PSD_ACTION_ID_GAS_IREQ:391 brcmf_dbg(TRACE, "%s P2P GAS Initial Request\n",392 (tx) ? "TX" : "RX");393 break;394 case P2PSD_ACTION_ID_GAS_IRESP:395 brcmf_dbg(TRACE, "%s P2P GAS Initial Response\n",396 (tx) ? "TX" : "RX");397 break;398 case P2PSD_ACTION_ID_GAS_CREQ:399 brcmf_dbg(TRACE, "%s P2P GAS Comeback Request\n",400 (tx) ? "TX" : "RX");401 break;402 case P2PSD_ACTION_ID_GAS_CRESP:403 brcmf_dbg(TRACE, "%s P2P GAS Comeback Response\n",404 (tx) ? "TX" : "RX");405 break;406 default:407 brcmf_dbg(TRACE, "%s Unknown P2P GAS Frame\n",408 (tx) ? "TX" : "RX");409 break;410 }411 }412}413 414#else415 416static void brcmf_p2p_print_actframe(bool tx, void *frame, u32 frame_len)417{418}419 420#endif421 422 423/**424 * brcmf_p2p_set_firmware() - prepare firmware for peer-to-peer operation.425 *426 * @ifp: ifp to use for iovars (primary).427 * @p2p_mac: mac address to configure for p2p_da_override428 */429static int brcmf_p2p_set_firmware(struct brcmf_if *ifp, u8 *p2p_mac)430{431 struct brcmf_pub *drvr = ifp->drvr;432 s32 ret = 0;433 434 brcmf_fil_cmd_int_set(ifp, BRCMF_C_DOWN, 1);435 brcmf_fil_iovar_int_set(ifp, "apsta", 1);436 brcmf_fil_cmd_int_set(ifp, BRCMF_C_UP, 1);437 438 /* In case of COB type, firmware has default mac address439 * After Initializing firmware, we have to set current mac address to440 * firmware for P2P device address. This must be done with discovery441 * disabled.442 */443 brcmf_fil_iovar_int_set(ifp, "p2p_disc", 0);444 445 ret = brcmf_fil_iovar_data_set(ifp, "p2p_da_override", p2p_mac,446 ETH_ALEN);447 if (ret)448 bphy_err(drvr, "failed to update device address ret %d\n", ret);449 450 return ret;451}452 453/**454 * brcmf_p2p_generate_bss_mac() - derive mac addresses for P2P.455 *456 * @p2p: P2P specific data.457 * @dev_addr: optional device address.458 *459 * P2P needs mac addresses for P2P device and interface. If no device460 * address it specified, these are derived from a random ethernet461 * address.462 */463static void brcmf_p2p_generate_bss_mac(struct brcmf_p2p_info *p2p, u8 *dev_addr)464{465 struct brcmf_if *pri_ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp;466 bool random_addr = false;467 bool local_admin = false;468 469 if (!dev_addr || is_zero_ether_addr(dev_addr)) {470 /* If the primary interface address is already locally471 * administered, create a new random address.472 */473 if (pri_ifp->mac_addr[0] & 0x02) {474 random_addr = true;475 } else {476 dev_addr = pri_ifp->mac_addr;477 local_admin = true;478 }479 }480 481 /* Generate the P2P Device Address obtaining a random ethernet482 * address with the locally administered bit set.483 */484 if (random_addr)485 eth_random_addr(p2p->dev_addr);486 else487 memcpy(p2p->dev_addr, dev_addr, ETH_ALEN);488 489 if (local_admin)490 p2p->dev_addr[0] |= 0x02;491 492 /* Generate the P2P Interface Address. If the discovery and connection493 * BSSCFGs need to simultaneously co-exist, then this address must be494 * different from the P2P Device Address, but also locally administered.495 */496 memcpy(p2p->conn_int_addr, p2p->dev_addr, ETH_ALEN);497 p2p->conn_int_addr[0] |= 0x02;498 p2p->conn_int_addr[4] ^= 0x80;499 500 memcpy(p2p->conn2_int_addr, p2p->dev_addr, ETH_ALEN);501 p2p->conn2_int_addr[0] |= 0x02;502 p2p->conn2_int_addr[4] ^= 0x90;503}504 505/**506 * brcmf_p2p_scan_is_p2p_request() - is cfg80211 scan request a P2P scan.507 *508 * @request: the scan request as received from cfg80211.509 *510 * returns true if one of the ssids in the request matches the511 * P2P wildcard ssid; otherwise returns false.512 */513static bool brcmf_p2p_scan_is_p2p_request(struct cfg80211_scan_request *request)514{515 struct cfg80211_ssid *ssids = request->ssids;516 int i;517 518 for (i = 0; i < request->n_ssids; i++) {519 if (ssids[i].ssid_len != BRCMF_P2P_WILDCARD_SSID_LEN)520 continue;521 522 brcmf_dbg(INFO, "comparing ssid \"%s\"", ssids[i].ssid);523 if (!memcmp(BRCMF_P2P_WILDCARD_SSID, ssids[i].ssid,524 BRCMF_P2P_WILDCARD_SSID_LEN))525 return true;526 }527 return false;528}529 530/**531 * brcmf_p2p_set_discover_state - set discover state in firmware.532 *533 * @ifp: low-level interface object.534 * @state: discover state to set.535 * @chanspec: channel parameters (for state @WL_P2P_DISC_ST_LISTEN only).536 * @listen_ms: duration to listen (for state @WL_P2P_DISC_ST_LISTEN only).537 */538static s32 brcmf_p2p_set_discover_state(struct brcmf_if *ifp, u8 state,539 u16 chanspec, u16 listen_ms)540{541 struct brcmf_p2p_disc_st_le discover_state;542 s32 ret = 0;543 brcmf_dbg(TRACE, "enter\n");544 545 discover_state.state = state;546 discover_state.chspec = cpu_to_le16(chanspec);547 discover_state.dwell = cpu_to_le16(listen_ms);548 ret = brcmf_fil_bsscfg_data_set(ifp, "p2p_state", &discover_state,549 sizeof(discover_state));550 return ret;551}552 553/**554 * brcmf_p2p_deinit_discovery() - disable P2P device discovery.555 *556 * @p2p: P2P specific data.557 *558 * Resets the discovery state and disables it in firmware.559 */560static s32 brcmf_p2p_deinit_discovery(struct brcmf_p2p_info *p2p)561{562 struct brcmf_cfg80211_vif *vif;563 564 brcmf_dbg(TRACE, "enter\n");565 566 /* Set the discovery state to SCAN */567 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;568 (void)brcmf_p2p_set_discover_state(vif->ifp, WL_P2P_DISC_ST_SCAN, 0, 0);569 570 /* Disable P2P discovery in the firmware */571 vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif;572 (void)brcmf_fil_iovar_int_set(vif->ifp, "p2p_disc", 0);573 574 return 0;575}576 577/**578 * brcmf_p2p_enable_discovery() - initialize and configure discovery.579 *580 * @p2p: P2P specific data.581 *582 * Initializes the discovery device and configure the virtual interface.583 */584static int brcmf_p2p_enable_discovery(struct brcmf_p2p_info *p2p)585{586 struct brcmf_pub *drvr = p2p->cfg->pub;587 struct brcmf_cfg80211_vif *vif;588 s32 ret = 0;589 590 brcmf_dbg(TRACE, "enter\n");591 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;592 if (!vif) {593 bphy_err(drvr, "P2P config device not available\n");594 ret = -EPERM;595 goto exit;596 }597 598 if (test_bit(BRCMF_P2P_STATUS_ENABLED, &p2p->status)) {599 brcmf_dbg(INFO, "P2P config device already configured\n");600 goto exit;601 }602 603 /* Re-initialize P2P Discovery in the firmware */604 vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif;605 ret = brcmf_fil_iovar_int_set(vif->ifp, "p2p_disc", 1);606 if (ret < 0) {607 bphy_err(drvr, "set p2p_disc error\n");608 goto exit;609 }610 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;611 ret = brcmf_p2p_set_discover_state(vif->ifp, WL_P2P_DISC_ST_SCAN, 0, 0);612 if (ret < 0) {613 bphy_err(drvr, "unable to set WL_P2P_DISC_ST_SCAN\n");614 goto exit;615 }616 617 /*618 * Set wsec to any non-zero value in the discovery bsscfg619 * to ensure our P2P probe responses have the privacy bit620 * set in the 802.11 WPA IE. Some peer devices may not621 * initiate WPS with us if this bit is not set.622 */623 ret = brcmf_fil_bsscfg_int_set(vif->ifp, "wsec", AES_ENABLED);624 if (ret < 0) {625 bphy_err(drvr, "wsec error %d\n", ret);626 goto exit;627 }628 629 set_bit(BRCMF_P2P_STATUS_ENABLED, &p2p->status);630exit:631 return ret;632}633 634/**635 * brcmf_p2p_escan() - initiate a P2P scan.636 *637 * @p2p: P2P specific data.638 * @num_chans: number of channels to scan.639 * @chanspecs: channel parameters for @num_chans channels.640 * @search_state: P2P discover state to use.641 * @bss_type: type of P2P bss.642 */643static s32 brcmf_p2p_escan(struct brcmf_p2p_info *p2p, u32 num_chans,644 u16 chanspecs[], s32 search_state,645 enum p2p_bss_type bss_type)646{647 struct brcmf_pub *drvr = p2p->cfg->pub;648 s32 ret = 0;649 s32 memsize = offsetof(struct brcmf_p2p_scan_le,650 eparams.params_le.channel_list);651 s32 nprobes;652 s32 active;653 u32 i;654 u8 *memblk;655 struct brcmf_cfg80211_vif *vif;656 struct brcmf_p2p_scan_le *p2p_params;657 struct brcmf_scan_params_le *sparams;658 659 memsize += num_chans * sizeof(__le16);660 memblk = kzalloc(memsize, GFP_KERNEL);661 if (!memblk)662 return -ENOMEM;663 664 vif = p2p->bss_idx[bss_type].vif;665 if (vif == NULL) {666 bphy_err(drvr, "no vif for bss type %d\n", bss_type);667 ret = -EINVAL;668 goto exit;669 }670 p2p_params = (struct brcmf_p2p_scan_le *)memblk;671 sparams = &p2p_params->eparams.params_le;672 673 switch (search_state) {674 case WL_P2P_DISC_ST_SEARCH:675 /*676 * If we in SEARCH STATE, we don't need to set SSID explictly677 * because dongle use P2P WILDCARD internally by default, use678 * null ssid, which it is already due to kzalloc.679 */680 break;681 case WL_P2P_DISC_ST_SCAN:682 /*683 * wpa_supplicant has p2p_find command with type social or684 * progressive. For progressive, we need to set the ssid to685 * P2P WILDCARD because we just do broadcast scan unless686 * setting SSID.687 */688 sparams->ssid_le.SSID_len =689 cpu_to_le32(BRCMF_P2P_WILDCARD_SSID_LEN);690 memcpy(sparams->ssid_le.SSID, BRCMF_P2P_WILDCARD_SSID,691 BRCMF_P2P_WILDCARD_SSID_LEN);692 break;693 default:694 bphy_err(drvr, " invalid search state %d\n", search_state);695 ret = -EINVAL;696 goto exit;697 }698 699 brcmf_p2p_set_discover_state(vif->ifp, search_state, 0, 0);700 701 /*702 * set p2p scan parameters.703 */704 p2p_params->type = 'E';705 706 /* determine the scan engine parameters */707 sparams->bss_type = DOT11_BSSTYPE_ANY;708 sparams->scan_type = BRCMF_SCANTYPE_ACTIVE;709 710 eth_broadcast_addr(sparams->bssid);711 sparams->home_time = cpu_to_le32(P2PAPI_SCAN_HOME_TIME_MS);712 713 /*714 * SOCIAL_CHAN_CNT + 1 takes care of the Progressive scan715 * supported by the supplicant.716 */717 if (num_chans == SOCIAL_CHAN_CNT || num_chans == (SOCIAL_CHAN_CNT + 1))718 active = P2PAPI_SCAN_SOCIAL_DWELL_TIME_MS;719 else if (num_chans == AF_PEER_SEARCH_CNT)720 active = P2PAPI_SCAN_AF_SEARCH_DWELL_TIME_MS;721 else if (brcmf_get_vif_state_any(p2p->cfg, BRCMF_VIF_STATUS_CONNECTED))722 active = -1;723 else724 active = P2PAPI_SCAN_DWELL_TIME_MS;725 726 /* Override scan params to find a peer for a connection */727 if (num_chans == 1) {728 active = WL_SCAN_CONNECT_DWELL_TIME_MS;729 /* WAR to sync with presence period of VSDB GO.730 * send probe request more frequently731 */732 nprobes = active / WL_SCAN_JOIN_PROBE_INTERVAL_MS;733 } else {734 nprobes = active / P2PAPI_SCAN_NPROBS_TIME_MS;735 }736 737 if (nprobes <= 0)738 nprobes = 1;739 740 brcmf_dbg(INFO, "nprobes # %d, active_time %d\n", nprobes, active);741 sparams->active_time = cpu_to_le32(active);742 sparams->nprobes = cpu_to_le32(nprobes);743 sparams->passive_time = cpu_to_le32(-1);744 sparams->channel_num = cpu_to_le32(num_chans &745 BRCMF_SCAN_PARAMS_COUNT_MASK);746 for (i = 0; i < num_chans; i++)747 sparams->channel_list[i] = cpu_to_le16(chanspecs[i]);748 749 /* set the escan specific parameters */750 p2p_params->eparams.version = cpu_to_le32(BRCMF_ESCAN_REQ_VERSION);751 p2p_params->eparams.action = cpu_to_le16(WL_ESCAN_ACTION_START);752 p2p_params->eparams.sync_id = cpu_to_le16(0x1234);753 /* perform p2p scan on primary device */754 ret = brcmf_fil_bsscfg_data_set(vif->ifp, "p2p_scan", memblk, memsize);755 if (!ret)756 set_bit(BRCMF_SCAN_STATUS_BUSY, &p2p->cfg->scan_status);757exit:758 kfree(memblk);759 return ret;760}761 762/**763 * brcmf_p2p_run_escan() - escan callback for peer-to-peer.764 *765 * @cfg: driver private data for cfg80211 interface.766 * @ifp: interface control.767 * @request: scan request from cfg80211.768 *769 * Determines the P2P discovery state based to scan request parameters and770 * validates the channels in the request.771 */772static s32 brcmf_p2p_run_escan(struct brcmf_cfg80211_info *cfg,773 struct brcmf_if *ifp,774 struct cfg80211_scan_request *request)775{776 struct brcmf_p2p_info *p2p = &cfg->p2p;777 struct brcmf_pub *drvr = cfg->pub;778 s32 err = 0;779 s32 search_state = WL_P2P_DISC_ST_SCAN;780 struct brcmf_cfg80211_vif *vif;781 struct net_device *dev = NULL;782 int i, num_nodfs = 0;783 u16 *chanspecs;784 785 brcmf_dbg(TRACE, "enter\n");786 787 if (!request) {788 err = -EINVAL;789 goto exit;790 }791 792 if (request->n_channels) {793 chanspecs = kcalloc(request->n_channels, sizeof(*chanspecs),794 GFP_KERNEL);795 if (!chanspecs) {796 err = -ENOMEM;797 goto exit;798 }799 vif = p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif;800 if (vif)801 dev = vif->wdev.netdev;802 if (request->n_channels == 3 &&803 request->channels[0]->hw_value == SOCIAL_CHAN_1 &&804 request->channels[1]->hw_value == SOCIAL_CHAN_2 &&805 request->channels[2]->hw_value == SOCIAL_CHAN_3) {806 /* SOCIAL CHANNELS 1, 6, 11 */807 search_state = WL_P2P_DISC_ST_SEARCH;808 brcmf_dbg(INFO, "P2P SEARCH PHASE START\n");809 } else if (dev != NULL &&810 vif->wdev.iftype == NL80211_IFTYPE_P2P_GO) {811 /* If you are already a GO, then do SEARCH only */812 brcmf_dbg(INFO, "Already a GO. Do SEARCH Only\n");813 search_state = WL_P2P_DISC_ST_SEARCH;814 } else {815 brcmf_dbg(INFO, "P2P SCAN STATE START\n");816 }817 818 /*819 * no P2P scanning on passive or DFS channels.820 */821 for (i = 0; i < request->n_channels; i++) {822 struct ieee80211_channel *chan = request->channels[i];823 824 if (chan->flags & (IEEE80211_CHAN_RADAR |825 IEEE80211_CHAN_NO_IR))826 continue;827 828 chanspecs[i] = channel_to_chanspec(&p2p->cfg->d11inf,829 chan);830 brcmf_dbg(INFO, "%d: chan=%d, channel spec=%x\n",831 num_nodfs, chan->hw_value, chanspecs[i]);832 num_nodfs++;833 }834 err = brcmf_p2p_escan(p2p, num_nodfs, chanspecs, search_state,835 P2PAPI_BSSCFG_DEVICE);836 kfree(chanspecs);837 }838exit:839 if (err)840 bphy_err(drvr, "error (%d)\n", err);841 return err;842}843 844 845/**846 * brcmf_p2p_find_listen_channel() - find listen channel in ie string.847 *848 * @ie: string of information elements.849 * @ie_len: length of string.850 *851 * Scan ie for p2p ie and look for attribute 6 channel. If available determine852 * channel and return it.853 */854static s32 brcmf_p2p_find_listen_channel(const u8 *ie, u32 ie_len)855{856 u8 channel_ie[5];857 s32 listen_channel;858 s32 err;859 860 err = cfg80211_get_p2p_attr(ie, ie_len,861 IEEE80211_P2P_ATTR_LISTEN_CHANNEL,862 channel_ie, sizeof(channel_ie));863 if (err < 0)864 return err;865 866 /* listen channel subel length format: */867 /* 3(country) + 1(op. class) + 1(chan num) */868 listen_channel = (s32)channel_ie[3 + 1];869 870 if (listen_channel == SOCIAL_CHAN_1 ||871 listen_channel == SOCIAL_CHAN_2 ||872 listen_channel == SOCIAL_CHAN_3) {873 brcmf_dbg(INFO, "Found my Listen Channel %d\n", listen_channel);874 return listen_channel;875 }876 877 return -EPERM;878}879 880 881/**882 * brcmf_p2p_scan_prep() - prepare scan based on request.883 *884 * @wiphy: wiphy device.885 * @request: scan request from cfg80211.886 * @vif: vif on which scan request is to be executed.887 *888 * Prepare the scan appropriately for type of scan requested. Overrides the889 * escan .run() callback for peer-to-peer scanning.890 */891int brcmf_p2p_scan_prep(struct wiphy *wiphy,892 struct cfg80211_scan_request *request,893 struct brcmf_cfg80211_vif *vif)894{895 struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);896 struct brcmf_p2p_info *p2p = &cfg->p2p;897 int err;898 899 if (brcmf_p2p_scan_is_p2p_request(request)) {900 /* find my listen channel */901 err = brcmf_p2p_find_listen_channel(request->ie,902 request->ie_len);903 if (err < 0)904 return err;905 906 p2p->afx_hdl.my_listen_chan = err;907 908 clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);909 brcmf_dbg(INFO, "P2P: GO_NEG_PHASE status cleared\n");910 911 err = brcmf_p2p_enable_discovery(p2p);912 if (err)913 return err;914 915 /* override .run_escan() callback. */916 cfg->escan_info.run = brcmf_p2p_run_escan;917 }918 return 0;919}920 921 922/**923 * brcmf_p2p_discover_listen() - set firmware to discover listen state.924 *925 * @p2p: p2p device.926 * @channel: channel nr for discover listen.927 * @duration: time in ms to stay on channel.928 *929 */930static s32931brcmf_p2p_discover_listen(struct brcmf_p2p_info *p2p, u16 channel, u32 duration)932{933 struct brcmf_pub *drvr = p2p->cfg->pub;934 struct brcmf_cfg80211_vif *vif;935 struct brcmu_chan ch;936 s32 err = 0;937 938 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;939 if (!vif) {940 bphy_err(drvr, "Discovery is not set, so we have nothing to do\n");941 err = -EPERM;942 goto exit;943 }944 945 if (test_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN, &p2p->status)) {946 bphy_err(drvr, "Previous LISTEN is not completed yet\n");947 /* WAR: prevent cookie mismatch in wpa_supplicant return OK */948 goto exit;949 }950 951 ch.chnum = channel;952 ch.bw = BRCMU_CHAN_BW_20;953 p2p->cfg->d11inf.encchspec(&ch);954 err = brcmf_p2p_set_discover_state(vif->ifp, WL_P2P_DISC_ST_LISTEN,955 ch.chspec, (u16)duration);956 if (!err) {957 set_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN, &p2p->status);958 p2p->remain_on_channel_cookie++;959 }960exit:961 return err;962}963 964 965/**966 * brcmf_p2p_remain_on_channel() - put device on channel and stay there.967 *968 * @wiphy: wiphy device.969 * @wdev: wireless device.970 * @channel: channel to stay on.971 * @duration: time in ms to remain on channel.972 * @cookie: cookie.973 */974int brcmf_p2p_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,975 struct ieee80211_channel *channel,976 unsigned int duration, u64 *cookie)977{978 struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);979 struct brcmf_p2p_info *p2p = &cfg->p2p;980 s32 err;981 u16 channel_nr;982 983 channel_nr = ieee80211_frequency_to_channel(channel->center_freq);984 brcmf_dbg(TRACE, "Enter, channel: %d, duration ms (%d)\n", channel_nr,985 duration);986 987 err = brcmf_p2p_enable_discovery(p2p);988 if (err)989 goto exit;990 err = brcmf_p2p_discover_listen(p2p, channel_nr, duration);991 if (err)992 goto exit;993 994 memcpy(&p2p->remain_on_channel, channel, sizeof(*channel));995 *cookie = p2p->remain_on_channel_cookie;996 cfg80211_ready_on_channel(wdev, *cookie, channel, duration, GFP_KERNEL);997 998exit:999 return err;1000}1001 1002 1003/**1004 * brcmf_p2p_notify_listen_complete() - p2p listen has completed.1005 *1006 * @ifp: interfac control.1007 * @e: event message. Not used, to make it usable for fweh event dispatcher.1008 * @data: payload of message. Not used.1009 *1010 */1011int brcmf_p2p_notify_listen_complete(struct brcmf_if *ifp,1012 const struct brcmf_event_msg *e,1013 void *data)1014{1015 struct brcmf_cfg80211_info *cfg = ifp->drvr->config;1016 struct brcmf_p2p_info *p2p = &cfg->p2p;1017 1018 brcmf_dbg(TRACE, "Enter\n");1019 if (test_and_clear_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN,1020 &p2p->status)) {1021 if (test_and_clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN,1022 &p2p->status)) {1023 clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME,1024 &p2p->status);1025 brcmf_dbg(INFO, "Listen DONE, wake up wait_next_af\n");1026 complete(&p2p->wait_next_af);1027 }1028 1029 cfg80211_remain_on_channel_expired(&ifp->vif->wdev,1030 p2p->remain_on_channel_cookie,1031 &p2p->remain_on_channel,1032 GFP_KERNEL);1033 }1034 return 0;1035}1036 1037 1038/**1039 * brcmf_p2p_cancel_remain_on_channel() - cancel p2p listen state.1040 *1041 * @ifp: interfac control.1042 *1043 */1044void brcmf_p2p_cancel_remain_on_channel(struct brcmf_if *ifp)1045{1046 if (!ifp)1047 return;1048 brcmf_p2p_set_discover_state(ifp, WL_P2P_DISC_ST_SCAN, 0, 0);1049 brcmf_p2p_notify_listen_complete(ifp, NULL, NULL);1050}1051 1052 1053/**1054 * brcmf_p2p_act_frm_search() - search function for action frame.1055 *1056 * @p2p: p2p device.1057 * @channel: channel on which action frame is to be trasmitted.1058 *1059 * search function to reach at common channel to send action frame. When1060 * channel is 0 then all social channels will be used to send af1061 */1062static s32 brcmf_p2p_act_frm_search(struct brcmf_p2p_info *p2p, u16 channel)1063{1064 struct brcmf_pub *drvr = p2p->cfg->pub;1065 s32 err;1066 u32 channel_cnt;1067 u16 *default_chan_list;1068 u32 i;1069 struct brcmu_chan ch;1070 1071 brcmf_dbg(TRACE, "Enter\n");1072 1073 if (channel)1074 channel_cnt = AF_PEER_SEARCH_CNT;1075 else1076 channel_cnt = SOCIAL_CHAN_CNT;1077 default_chan_list = kcalloc(channel_cnt, sizeof(*default_chan_list),1078 GFP_KERNEL);1079 if (default_chan_list == NULL) {1080 bphy_err(drvr, "channel list allocation failed\n");1081 err = -ENOMEM;1082 goto exit;1083 }1084 ch.bw = BRCMU_CHAN_BW_20;1085 if (channel) {1086 ch.chnum = channel;1087 p2p->cfg->d11inf.encchspec(&ch);1088 /* insert same channel to the chan_list */1089 for (i = 0; i < channel_cnt; i++)1090 default_chan_list[i] = ch.chspec;1091 } else {1092 ch.chnum = SOCIAL_CHAN_1;1093 p2p->cfg->d11inf.encchspec(&ch);1094 default_chan_list[0] = ch.chspec;1095 ch.chnum = SOCIAL_CHAN_2;1096 p2p->cfg->d11inf.encchspec(&ch);1097 default_chan_list[1] = ch.chspec;1098 ch.chnum = SOCIAL_CHAN_3;1099 p2p->cfg->d11inf.encchspec(&ch);1100 default_chan_list[2] = ch.chspec;1101 }1102 err = brcmf_p2p_escan(p2p, channel_cnt, default_chan_list,1103 WL_P2P_DISC_ST_SEARCH, P2PAPI_BSSCFG_DEVICE);1104 kfree(default_chan_list);1105exit:1106 return err;1107}1108 1109 1110/**1111 * brcmf_p2p_afx_handler() - afx worker thread.1112 *1113 * @work:1114 *1115 */1116static void brcmf_p2p_afx_handler(struct work_struct *work)1117{1118 struct afx_hdl *afx_hdl = container_of(work, struct afx_hdl, afx_work);1119 struct brcmf_p2p_info *p2p = container_of(afx_hdl,1120 struct brcmf_p2p_info,1121 afx_hdl);1122 struct brcmf_pub *drvr = p2p->cfg->pub;1123 s32 err;1124 1125 if (!afx_hdl->is_active)1126 return;1127 1128 if (afx_hdl->is_listen && afx_hdl->my_listen_chan)1129 /* 100ms ~ 300ms */1130 err = brcmf_p2p_discover_listen(p2p, afx_hdl->my_listen_chan,1131 100 * get_random_u32_inclusive(1, 3));1132 else1133 err = brcmf_p2p_act_frm_search(p2p, afx_hdl->peer_listen_chan);1134 1135 if (err) {1136 bphy_err(drvr, "ERROR occurred! value is (%d)\n", err);1137 if (test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL,1138 &p2p->status))1139 complete(&afx_hdl->act_frm_scan);1140 }1141}1142 1143 1144/**1145 * brcmf_p2p_af_searching_channel() - search channel.1146 *1147 * @p2p: p2p device info struct.1148 *1149 */1150static s32 brcmf_p2p_af_searching_channel(struct brcmf_p2p_info *p2p)1151{1152 struct afx_hdl *afx_hdl = &p2p->afx_hdl;1153 struct brcmf_cfg80211_vif *pri_vif;1154 s32 retry;1155 1156 brcmf_dbg(TRACE, "Enter\n");1157 1158 pri_vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif;1159 1160 reinit_completion(&afx_hdl->act_frm_scan);1161 set_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status);1162 afx_hdl->is_active = true;1163 afx_hdl->peer_chan = P2P_INVALID_CHANNEL;1164 1165 /* Loop to wait until we find a peer's channel or the1166 * pending action frame tx is cancelled.1167 */1168 retry = 0;1169 while ((retry < P2P_CHANNEL_SYNC_RETRY) &&1170 (afx_hdl->peer_chan == P2P_INVALID_CHANNEL)) {1171 afx_hdl->is_listen = false;1172 brcmf_dbg(TRACE, "Scheduling action frame for sending.. (%d)\n",1173 retry);1174 /* search peer on peer's listen channel */1175 schedule_work(&afx_hdl->afx_work);1176 wait_for_completion_timeout(&afx_hdl->act_frm_scan,1177 P2P_AF_FRM_SCAN_MAX_WAIT);1178 if ((afx_hdl->peer_chan != P2P_INVALID_CHANNEL) ||1179 (!test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL,1180 &p2p->status)))1181 break;1182 1183 if (afx_hdl->my_listen_chan) {1184 brcmf_dbg(TRACE, "Scheduling listen peer, channel=%d\n",1185 afx_hdl->my_listen_chan);1186 /* listen on my listen channel */1187 afx_hdl->is_listen = true;1188 schedule_work(&afx_hdl->afx_work);1189 wait_for_completion_timeout(&afx_hdl->act_frm_scan,1190 P2P_AF_FRM_SCAN_MAX_WAIT);1191 }1192 if ((afx_hdl->peer_chan != P2P_INVALID_CHANNEL) ||1193 (!test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL,1194 &p2p->status)))1195 break;1196 retry++;1197 1198 /* if sta is connected or connecting, sleep for a while before1199 * retry af tx or finding a peer1200 */1201 if (test_bit(BRCMF_VIF_STATUS_CONNECTED, &pri_vif->sme_state) ||1202 test_bit(BRCMF_VIF_STATUS_CONNECTING, &pri_vif->sme_state))1203 msleep(P2P_DEFAULT_SLEEP_TIME_VSDB);1204 }1205 1206 brcmf_dbg(TRACE, "Completed search/listen peer_chan=%d\n",1207 afx_hdl->peer_chan);1208 afx_hdl->is_active = false;1209 1210 clear_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status);1211 1212 return afx_hdl->peer_chan;1213}1214 1215 1216/**1217 * brcmf_p2p_scan_finding_common_channel() - was escan used for finding channel1218 *1219 * @cfg: common configuration struct.1220 * @bi: bss info struct, result from scan.1221 *1222 */1223bool brcmf_p2p_scan_finding_common_channel(struct brcmf_cfg80211_info *cfg,1224 struct brcmf_bss_info_le *bi)1225 1226{1227 struct brcmf_p2p_info *p2p = &cfg->p2p;1228 struct afx_hdl *afx_hdl = &p2p->afx_hdl;1229 struct brcmu_chan ch;1230 u8 *ie;1231 s32 err;1232 u8 p2p_dev_addr[ETH_ALEN];1233 1234 if (!test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status))1235 return false;1236 1237 if (bi == NULL) {1238 brcmf_dbg(TRACE, "ACTION FRAME SCAN Done\n");1239 if (afx_hdl->peer_chan == P2P_INVALID_CHANNEL)1240 complete(&afx_hdl->act_frm_scan);1241 return true;1242 }1243 1244 ie = ((u8 *)bi) + le16_to_cpu(bi->ie_offset);1245 memset(p2p_dev_addr, 0, sizeof(p2p_dev_addr));1246 err = cfg80211_get_p2p_attr(ie, le32_to_cpu(bi->ie_length),1247 IEEE80211_P2P_ATTR_DEVICE_INFO,1248 p2p_dev_addr, sizeof(p2p_dev_addr));1249 if (err < 0)1250 err = cfg80211_get_p2p_attr(ie, le32_to_cpu(bi->ie_length),1251 IEEE80211_P2P_ATTR_DEVICE_ID,1252 p2p_dev_addr, sizeof(p2p_dev_addr));1253 if ((err >= 0) &&1254 (ether_addr_equal(p2p_dev_addr, afx_hdl->tx_dst_addr))) {1255 if (!bi->ctl_ch) {1256 ch.chspec = le16_to_cpu(bi->chanspec);1257 cfg->d11inf.decchspec(&ch);1258 bi->ctl_ch = ch.control_ch_num;1259 }1260 afx_hdl->peer_chan = bi->ctl_ch;1261 brcmf_dbg(TRACE, "ACTION FRAME SCAN : Peer %pM found, channel : %d\n",1262 afx_hdl->tx_dst_addr, afx_hdl->peer_chan);1263 complete(&afx_hdl->act_frm_scan);1264 }1265 return true;1266}1267 1268/**1269 * brcmf_p2p_abort_action_frame() - abort action frame.1270 *1271 * @cfg: common configuration struct.1272 *1273 */1274static s32 brcmf_p2p_abort_action_frame(struct brcmf_cfg80211_info *cfg)1275{1276 struct brcmf_p2p_info *p2p = &cfg->p2p;1277 struct brcmf_cfg80211_vif *vif;1278 s32 err;1279 s32 int_val = 1;1280 1281 brcmf_dbg(TRACE, "Enter\n");1282 1283 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;1284 err = brcmf_fil_bsscfg_data_set(vif->ifp, "actframe_abort", &int_val,1285 sizeof(s32));1286 if (err)1287 brcmf_err(" aborting action frame has failed (%d)\n", err);1288 1289 return err;1290}1291 1292/**1293 * brcmf_p2p_stop_wait_next_action_frame() - finish scan if af tx complete.1294 *1295 * @cfg: common configuration struct.1296 *1297 */1298static void1299brcmf_p2p_stop_wait_next_action_frame(struct brcmf_cfg80211_info *cfg)1300{1301 struct brcmf_p2p_info *p2p = &cfg->p2p;1302 struct brcmf_if *ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp;1303 s32 err;1304 1305 if (test_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status) &&1306 (test_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status) ||1307 test_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status))) {1308 brcmf_dbg(TRACE, "*** Wake UP ** abort actframe iovar\n");1309 /* if channel is not zero, "actfame" uses off channel scan.1310 * So abort scan for off channel completion.1311 */1312 if (p2p->af_sent_channel) {1313 /* abort actframe using actframe_abort or abort scan */1314 err = brcmf_p2p_abort_action_frame(cfg);1315 if (err)1316 brcmf_notify_escan_complete(cfg, ifp, true,1317 true);1318 }1319 } else if (test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN,1320 &p2p->status)) {1321 brcmf_dbg(TRACE, "*** Wake UP ** abort listen for next af frame\n");1322 /* So abort scan to cancel listen */1323 brcmf_notify_escan_complete(cfg, ifp, true, true);1324 }1325}1326 1327 1328/**1329 * brcmf_p2p_gon_req_collision() - Check if go negotiaton collission1330 *1331 * @p2p: p2p device info struct.1332 * @mac: MAC address.1333 *1334 * return true if recevied action frame is to be dropped.1335 */1336static bool1337brcmf_p2p_gon_req_collision(struct brcmf_p2p_info *p2p, u8 *mac)1338{1339 struct brcmf_cfg80211_info *cfg = p2p->cfg;1340 struct brcmf_if *ifp;1341 1342 brcmf_dbg(TRACE, "Enter\n");1343 1344 if (!test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status) ||1345 !p2p->gon_req_action)1346 return false;1347 1348 brcmf_dbg(TRACE, "GO Negotiation Request COLLISION !!!\n");1349 /* if sa(peer) addr is less than da(my) addr, then this device1350 * process peer's gon request and block to send gon req.1351 * if not (sa addr > da addr),1352 * this device will process gon request and drop gon req of peer.1353 */1354 ifp = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif->ifp;1355 if (memcmp(mac, ifp->mac_addr, ETH_ALEN) < 0) {1356 brcmf_dbg(INFO, "Block transmit gon req !!!\n");1357 p2p->block_gon_req_tx = true;1358 /* if we are finding a common channel for sending af,1359 * do not scan more to block to send current gon req1360 */1361 if (test_and_clear_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL,1362 &p2p->status))1363 complete(&p2p->afx_hdl.act_frm_scan);1364 if (test_and_clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME,1365 &p2p->status))1366 brcmf_p2p_stop_wait_next_action_frame(cfg);1367 return false;1368 }1369 1370 /* drop gon request of peer to process gon request by this device. */1371 brcmf_dbg(INFO, "Drop received gon req !!!\n");1372 1373 return true;1374}1375 1376 1377/**1378 * brcmf_p2p_notify_action_frame_rx() - received action frame.1379 *1380 * @ifp: interfac control.1381 * @e: event message. Not used, to make it usable for fweh event dispatcher.1382 * @data: payload of message, containing action frame data.1383 *1384 */1385int brcmf_p2p_notify_action_frame_rx(struct brcmf_if *ifp,1386 const struct brcmf_event_msg *e,1387 void *data)1388{1389 struct brcmf_pub *drvr = ifp->drvr;1390 struct brcmf_cfg80211_info *cfg = drvr->config;1391 struct brcmf_p2p_info *p2p = &cfg->p2p;1392 struct afx_hdl *afx_hdl = &p2p->afx_hdl;1393 struct wireless_dev *wdev;1394 u32 mgmt_frame_len = e->datalen - sizeof(struct brcmf_rx_mgmt_data);1395 struct brcmf_rx_mgmt_data *rxframe = (struct brcmf_rx_mgmt_data *)data;1396 u8 *frame = (u8 *)(rxframe + 1);1397 struct brcmf_p2p_pub_act_frame *act_frm;1398 struct brcmf_p2psd_gas_pub_act_frame *sd_act_frm;1399 struct brcmu_chan ch;1400 struct ieee80211_mgmt *mgmt_frame;1401 s32 freq;1402 u16 mgmt_type;1403 u8 action;1404 1405 if (e->datalen < sizeof(*rxframe)) {1406 brcmf_dbg(SCAN, "Event data to small. Ignore\n");1407 return 0;1408 }1409 1410 ch.chspec = be16_to_cpu(rxframe->chanspec);1411 cfg->d11inf.decchspec(&ch);1412 /* Check if wpa_supplicant has registered for this frame */1413 brcmf_dbg(INFO, "ifp->vif->mgmt_rx_reg %04x\n", ifp->vif->mgmt_rx_reg);1414 mgmt_type = (IEEE80211_STYPE_ACTION & IEEE80211_FCTL_STYPE) >> 4;1415 if ((ifp->vif->mgmt_rx_reg & BIT(mgmt_type)) == 0)1416 return 0;1417 1418 brcmf_p2p_print_actframe(false, frame, mgmt_frame_len);1419 1420 action = P2P_PAF_SUBTYPE_INVALID;1421 if (brcmf_p2p_is_pub_action(frame, mgmt_frame_len)) {1422 act_frm = (struct brcmf_p2p_pub_act_frame *)frame;1423 action = act_frm->subtype;1424 if ((action == P2P_PAF_GON_REQ) &&1425 (brcmf_p2p_gon_req_collision(p2p, (u8 *)e->addr))) {1426 if (test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL,1427 &p2p->status) &&1428 (ether_addr_equal(afx_hdl->tx_dst_addr, e->addr))) {1429 afx_hdl->peer_chan = ch.control_ch_num;1430 brcmf_dbg(INFO, "GON request: Peer found, channel=%d\n",1431 afx_hdl->peer_chan);1432 complete(&afx_hdl->act_frm_scan);1433 }1434 return 0;1435 }1436 /* After complete GO Negotiation, roll back to mpc mode */1437 if ((action == P2P_PAF_GON_CONF) ||1438 (action == P2P_PAF_PROVDIS_RSP))1439 brcmf_set_mpc(ifp, 1);1440 if (action == P2P_PAF_GON_CONF) {1441 brcmf_dbg(TRACE, "P2P: GO_NEG_PHASE status cleared\n");1442 clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);1443 }1444 } else if (brcmf_p2p_is_gas_action(frame, mgmt_frame_len)) {1445 sd_act_frm = (struct brcmf_p2psd_gas_pub_act_frame *)frame;1446 action = sd_act_frm->action;1447 }1448 1449 if (test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status) &&1450 (p2p->next_af_subtype == action)) {1451 brcmf_dbg(TRACE, "We got a right next frame! (%d)\n", action);1452 clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME,1453 &p2p->status);1454 /* Stop waiting for next AF. */1455 brcmf_p2p_stop_wait_next_action_frame(cfg);1456 }1457 1458 mgmt_frame = kzalloc(offsetof(struct ieee80211_mgmt, u) +1459 mgmt_frame_len, GFP_KERNEL);1460 if (!mgmt_frame) {1461 bphy_err(drvr, "No memory available for action frame\n");1462 return -ENOMEM;1463 }1464 memcpy(mgmt_frame->da, ifp->mac_addr, ETH_ALEN);1465 brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_BSSID, mgmt_frame->bssid,1466 ETH_ALEN);1467 memcpy(mgmt_frame->sa, e->addr, ETH_ALEN);1468 mgmt_frame->frame_control = cpu_to_le16(IEEE80211_STYPE_ACTION);1469 memcpy(mgmt_frame->u.body, frame, mgmt_frame_len);1470 mgmt_frame_len += offsetof(struct ieee80211_mgmt, u.body);1471 1472 freq = ieee80211_channel_to_frequency(ch.control_ch_num,1473 ch.band == BRCMU_CHAN_BAND_2G ?1474 NL80211_BAND_2GHZ :1475 NL80211_BAND_5GHZ);1476 1477 wdev = &ifp->vif->wdev;1478 cfg80211_rx_mgmt(wdev, freq, 0, (u8 *)mgmt_frame, mgmt_frame_len, 0);1479 1480 kfree(mgmt_frame);1481 return 0;1482}1483 1484 1485/**1486 * brcmf_p2p_notify_action_tx_complete() - transmit action frame complete1487 *1488 * @ifp: interfac control.1489 * @e: event message. Not used, to make it usable for fweh event dispatcher.1490 * @data: not used.1491 *1492 */1493int brcmf_p2p_notify_action_tx_complete(struct brcmf_if *ifp,1494 const struct brcmf_event_msg *e,1495 void *data)1496{1497 struct brcmf_cfg80211_info *cfg = ifp->drvr->config;1498 struct brcmf_p2p_info *p2p = &cfg->p2p;1499 1500 brcmf_dbg(INFO, "Enter: event %s, status=%d\n",1501 e->event_code == BRCMF_E_ACTION_FRAME_OFF_CHAN_COMPLETE ?1502 "ACTION_FRAME_OFF_CHAN_COMPLETE" : "ACTION_FRAME_COMPLETE",1503 e->status);1504 1505 if (!test_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status))1506 return 0;1507 1508 if (e->event_code == BRCMF_E_ACTION_FRAME_COMPLETE) {1509 if (e->status == BRCMF_E_STATUS_SUCCESS) {1510 set_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED,1511 &p2p->status);1512 if (!p2p->wait_for_offchan_complete)1513 complete(&p2p->send_af_done);1514 } else {1515 set_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status);1516 /* If there is no ack, we don't need to wait for1517 * WLC_E_ACTION_FRAME_OFFCHAN_COMPLETE event1518 */1519 brcmf_p2p_stop_wait_next_action_frame(cfg);1520 }1521 1522 } else {1523 complete(&p2p->send_af_done);1524 }1525 return 0;1526}1527 1528 1529/**1530 * brcmf_p2p_tx_action_frame() - send action frame over fil.1531 *1532 * @p2p: p2p info struct for vif.1533 * @af_params: action frame data/info.1534 *1535 * Send an action frame immediately without doing channel synchronization.1536 *1537 * This function waits for a completion event before returning.1538 * The WLC_E_ACTION_FRAME_COMPLETE event will be received when the action1539 * frame is transmitted.1540 */1541static s32 brcmf_p2p_tx_action_frame(struct brcmf_p2p_info *p2p,1542 struct brcmf_fil_af_params_le *af_params)1543{1544 struct brcmf_pub *drvr = p2p->cfg->pub;1545 struct brcmf_cfg80211_vif *vif;1546 struct brcmf_p2p_action_frame *p2p_af;1547 s32 err = 0;1548 1549 brcmf_dbg(TRACE, "Enter\n");1550 1551 reinit_completion(&p2p->send_af_done);1552 clear_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status);1553 clear_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status);1554 1555 /* check if it is a p2p_presence response */1556 p2p_af = (struct brcmf_p2p_action_frame *)af_params->action_frame.data;1557 if (p2p_af->subtype == P2P_AF_PRESENCE_RSP)1558 vif = p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif;1559 else1560 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;1561 1562 err = brcmf_fil_bsscfg_data_set(vif->ifp, "actframe", af_params,1563 sizeof(*af_params));1564 if (err) {1565 bphy_err(drvr, " sending action frame has failed\n");1566 goto exit;1567 }1568 1569 p2p->af_sent_channel = le32_to_cpu(af_params->channel);1570 p2p->af_tx_sent_jiffies = jiffies;1571 1572 if (test_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN, &p2p->status) &&1573 p2p->af_sent_channel ==1574 ieee80211_frequency_to_channel(p2p->remain_on_channel.center_freq))1575 p2p->wait_for_offchan_complete = false;1576 else1577 p2p->wait_for_offchan_complete = true;1578 1579 brcmf_dbg(TRACE, "Waiting for %s tx completion event\n",1580 (p2p->wait_for_offchan_complete) ?1581 "off-channel" : "on-channel");1582 1583 wait_for_completion_timeout(&p2p->send_af_done, P2P_AF_MAX_WAIT_TIME);1584 1585 if (test_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status)) {1586 brcmf_dbg(TRACE, "TX action frame operation is success\n");1587 } else {1588 err = -EIO;1589 brcmf_dbg(TRACE, "TX action frame operation has failed\n");1590 }1591 /* clear status bit for action tx */1592 clear_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status);1593 clear_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status);1594 1595exit:1596 return err;1597}1598 1599 1600/**1601 * brcmf_p2p_pub_af_tx() - public action frame tx routine.1602 *1603 * @cfg: driver private data for cfg80211 interface.1604 * @af_params: action frame data/info.1605 * @config_af_params: configuration data for action frame.1606 *1607 * routine which transmits ation frame public type.1608 */1609static s32 brcmf_p2p_pub_af_tx(struct brcmf_cfg80211_info *cfg,1610 struct brcmf_fil_af_params_le *af_params,1611 struct brcmf_config_af_params *config_af_params)1612{1613 struct brcmf_p2p_info *p2p = &cfg->p2p;1614 struct brcmf_pub *drvr = cfg->pub;1615 struct brcmf_fil_action_frame_le *action_frame;1616 struct brcmf_p2p_pub_act_frame *act_frm;1617 s32 err = 0;1618 u16 ie_len;1619 1620 action_frame = &af_params->action_frame;1621 act_frm = (struct brcmf_p2p_pub_act_frame *)(action_frame->data);1622 1623 config_af_params->extra_listen = true;1624 1625 switch (act_frm->subtype) {1626 case P2P_PAF_GON_REQ:1627 brcmf_dbg(TRACE, "P2P: GO_NEG_PHASE status set\n");1628 set_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);1629 config_af_params->mpc_onoff = 0;1630 config_af_params->search_channel = true;1631 p2p->next_af_subtype = act_frm->subtype + 1;1632 p2p->gon_req_action = true;1633 /* increase dwell time to wait for RESP frame */1634 af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME);1635 break;1636 case P2P_PAF_GON_RSP:1637 p2p->next_af_subtype = act_frm->subtype + 1;1638 /* increase dwell time to wait for CONF frame */1639 af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME);1640 break;1641 case P2P_PAF_GON_CONF:1642 /* If we reached till GO Neg confirmation reset the filter */1643 brcmf_dbg(TRACE, "P2P: GO_NEG_PHASE status cleared\n");1644 clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);1645 /* turn on mpc again if go nego is done */1646 config_af_params->mpc_onoff = 1;1647 /* minimize dwell time */1648 af_params->dwell_time = cpu_to_le32(P2P_AF_MIN_DWELL_TIME);1649 config_af_params->extra_listen = false;1650 break;1651 case P2P_PAF_INVITE_REQ:1652 config_af_params->search_channel = true;1653 p2p->next_af_subtype = act_frm->subtype + 1;1654 /* increase dwell time */1655 af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME);1656 break;1657 case P2P_PAF_INVITE_RSP:1658 /* minimize dwell time */1659 af_params->dwell_time = cpu_to_le32(P2P_AF_MIN_DWELL_TIME);1660 config_af_params->extra_listen = false;1661 break;1662 case P2P_PAF_DEVDIS_REQ:1663 config_af_params->search_channel = true;1664 p2p->next_af_subtype = act_frm->subtype + 1;1665 /* maximize dwell time to wait for RESP frame */1666 af_params->dwell_time = cpu_to_le32(P2P_AF_LONG_DWELL_TIME);1667 break;1668 case P2P_PAF_DEVDIS_RSP:1669 /* minimize dwell time */1670 af_params->dwell_time = cpu_to_le32(P2P_AF_MIN_DWELL_TIME);1671 config_af_params->extra_listen = false;1672 break;1673 case P2P_PAF_PROVDIS_REQ:1674 ie_len = le16_to_cpu(action_frame->len) -1675 offsetof(struct brcmf_p2p_pub_act_frame, elts);1676 if (cfg80211_get_p2p_attr(&act_frm->elts[0], ie_len,1677 IEEE80211_P2P_ATTR_GROUP_ID,1678 NULL, 0) < 0)1679 config_af_params->search_channel = true;1680 config_af_params->mpc_onoff = 0;1681 p2p->next_af_subtype = act_frm->subtype + 1;1682 /* increase dwell time to wait for RESP frame */1683 af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME);1684 break;1685 case P2P_PAF_PROVDIS_RSP:1686 /* wpa_supplicant send go nego req right after prov disc */1687 p2p->next_af_subtype = P2P_PAF_GON_REQ;1688 /* increase dwell time to MED level */1689 af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME);1690 config_af_params->extra_listen = false;1691 break;1692 default:1693 bphy_err(drvr, "Unknown p2p pub act frame subtype: %d\n",1694 act_frm->subtype);1695 err = -EINVAL;1696 }1697 return err;1698}1699 1700static bool brcmf_p2p_check_dwell_overflow(u32 requested_dwell,1701 unsigned long dwell_jiffies)1702{1703 if ((requested_dwell & CUSTOM_RETRY_MASK) &&1704 (jiffies_to_msecs(jiffies - dwell_jiffies) >1705 (requested_dwell & ~CUSTOM_RETRY_MASK))) {1706 brcmf_err("Action frame TX retry time over dwell time!\n");1707 return true;1708 }1709 return false;1710}1711/**1712 * brcmf_p2p_send_action_frame() - send action frame .1713 *1714 * @cfg: driver private data for cfg80211 interface.1715 * @ndev: net device to transmit on.1716 * @af_params: configuration data for action frame.1717 */1718bool brcmf_p2p_send_action_frame(struct brcmf_cfg80211_info *cfg,1719 struct net_device *ndev,1720 struct brcmf_fil_af_params_le *af_params)1721{1722 struct brcmf_p2p_info *p2p = &cfg->p2p;1723 struct brcmf_if *ifp = netdev_priv(ndev);1724 struct brcmf_fil_action_frame_le *action_frame;1725 struct brcmf_config_af_params config_af_params;1726 struct afx_hdl *afx_hdl = &p2p->afx_hdl;1727 struct brcmf_pub *drvr = cfg->pub;1728 u16 action_frame_len;1729 bool ack = false;1730 u8 category;1731 u8 action;1732 s32 tx_retry;1733 s32 extra_listen_time;1734 uint delta_ms;1735 unsigned long dwell_jiffies = 0;1736 bool dwell_overflow = false;1737 1738 u32 requested_dwell = le32_to_cpu(af_params->dwell_time);1739 action_frame = &af_params->action_frame;1740 action_frame_len = le16_to_cpu(action_frame->len);1741 1742 brcmf_p2p_print_actframe(true, action_frame->data, action_frame_len);1743 1744 /* Add the default dwell time. Dwell time to stay off-channel */1745 /* to wait for a response action frame after transmitting an */1746 /* GO Negotiation action frame */1747 af_params->dwell_time = cpu_to_le32(P2P_AF_DWELL_TIME);1748 1749 category = action_frame->data[DOT11_ACTION_CAT_OFF];1750 action = action_frame->data[DOT11_ACTION_ACT_OFF];1751 1752 /* initialize variables */1753 p2p->next_af_subtype = P2P_PAF_SUBTYPE_INVALID;1754 p2p->gon_req_action = false;1755 1756 /* config parameters */1757 config_af_params.mpc_onoff = -1;1758 config_af_params.search_channel = false;1759 config_af_params.extra_listen = false;1760 1761 if (brcmf_p2p_is_pub_action(action_frame->data, action_frame_len)) {1762 /* p2p public action frame process */1763 if (brcmf_p2p_pub_af_tx(cfg, af_params, &config_af_params)) {1764 /* Just send unknown subtype frame with */1765 /* default parameters. */1766 bphy_err(drvr, "P2P Public action frame, unknown subtype.\n");1767 }1768 } else if (brcmf_p2p_is_gas_action(action_frame->data,1769 action_frame_len)) {1770 /* service discovery process */1771 if (action == P2PSD_ACTION_ID_GAS_IREQ ||1772 action == P2PSD_ACTION_ID_GAS_CREQ) {1773 /* configure service discovery query frame */1774 config_af_params.search_channel = true;1775 1776 /* save next af suptype to cancel */1777 /* remaining dwell time */1778 p2p->next_af_subtype = action + 1;1779 1780 af_params->dwell_time =1781 cpu_to_le32(P2P_AF_MED_DWELL_TIME);1782 } else if (action == P2PSD_ACTION_ID_GAS_IRESP ||1783 action == P2PSD_ACTION_ID_GAS_CRESP) {1784 /* configure service discovery response frame */1785 af_params->dwell_time =1786 cpu_to_le32(P2P_AF_MIN_DWELL_TIME);1787 } else {1788 bphy_err(drvr, "Unknown action type: %d\n", action);1789 goto exit;1790 }1791 } else if (brcmf_p2p_is_p2p_action(action_frame->data,1792 action_frame_len)) {1793 /* do not configure anything. it will be */1794 /* sent with a default configuration */1795 } else {1796 bphy_err(drvr, "Unknown Frame: category 0x%x, action 0x%x\n",1797 category, action);1798 return false;1799 }1800 1801 /* if connecting on primary iface, sleep for a while before sending1802 * af tx for VSDB1803 */1804 if (test_bit(BRCMF_VIF_STATUS_CONNECTING,1805 &p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->sme_state))1806 msleep(50);1807 1808 /* if scan is ongoing, abort current scan. */1809 if (test_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status))1810 brcmf_abort_scanning(cfg);1811 1812 memcpy(afx_hdl->tx_dst_addr, action_frame->da, ETH_ALEN);1813 1814 /* To make sure to send successfully action frame, turn off mpc */1815 if (config_af_params.mpc_onoff == 0)1816 brcmf_set_mpc(ifp, 0);1817 1818 /* set status and destination address before sending af */1819 if (p2p->next_af_subtype != P2P_PAF_SUBTYPE_INVALID) {1820 /* set status to cancel the remained dwell time in rx process */1821 set_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status);1822 }1823 1824 p2p->af_sent_channel = 0;1825 set_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status);1826 /* validate channel and p2p ies */1827 if (config_af_params.search_channel &&1828 IS_P2P_SOCIAL_CHANNEL(le32_to_cpu(af_params->channel)) &&1829 p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif->saved_ie.probe_req_ie_len) {1830 afx_hdl = &p2p->afx_hdl;1831 afx_hdl->peer_listen_chan = le32_to_cpu(af_params->channel);1832 1833 if (brcmf_p2p_af_searching_channel(p2p) ==1834 P2P_INVALID_CHANNEL) {1835 bphy_err(drvr, "Couldn't find peer's channel.\n");1836 goto exit;1837 }1838 1839 /* Abort scan even for VSDB scenarios. Scan gets aborted in1840 * firmware but after the check of piggyback algorithm. To take1841 * care of current piggback algo, lets abort the scan here1842 * itself.1843 */1844 brcmf_notify_escan_complete(cfg, ifp, true, true);1845 1846 /* update channel */1847 af_params->channel = cpu_to_le32(afx_hdl->peer_chan);1848 }1849 dwell_jiffies = jiffies;1850 dwell_overflow = brcmf_p2p_check_dwell_overflow(requested_dwell,1851 dwell_jiffies);1852 1853 tx_retry = 0;1854 while (!p2p->block_gon_req_tx &&1855 (!ack) && (tx_retry < P2P_AF_TX_MAX_RETRY) &&1856 !dwell_overflow) {1857 if (af_params->channel)1858 msleep(P2P_AF_RETRY_DELAY_TIME);1859 1860 ack = !brcmf_p2p_tx_action_frame(p2p, af_params);1861 tx_retry++;1862 dwell_overflow = brcmf_p2p_check_dwell_overflow(requested_dwell,1863 dwell_jiffies);1864 }1865 if (!ack) {1866 bphy_err(drvr, "Failed to send Action Frame(retry %d)\n",1867 tx_retry);1868 clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);1869 }1870 1871exit:1872 clear_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status);1873 1874 /* WAR: sometimes dongle does not keep the dwell time of 'actframe'.1875 * if we coundn't get the next action response frame and dongle does1876 * not keep the dwell time, go to listen state again to get next action1877 * response frame.1878 */1879 if (ack && config_af_params.extra_listen && !p2p->block_gon_req_tx &&1880 test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status) &&1881 p2p->af_sent_channel == afx_hdl->my_listen_chan) {1882 delta_ms = jiffies_to_msecs(jiffies - p2p->af_tx_sent_jiffies);1883 if (le32_to_cpu(af_params->dwell_time) > delta_ms)1884 extra_listen_time = le32_to_cpu(af_params->dwell_time) -1885 delta_ms;1886 else1887 extra_listen_time = 0;1888 if (extra_listen_time > 50) {1889 set_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN,1890 &p2p->status);1891 brcmf_dbg(INFO, "Wait more time! actual af time:%d, calculated extra listen:%d\n",1892 le32_to_cpu(af_params->dwell_time),1893 extra_listen_time);1894 extra_listen_time += 100;1895 if (!brcmf_p2p_discover_listen(p2p,1896 p2p->af_sent_channel,1897 extra_listen_time)) {1898 unsigned long duration;1899 1900 extra_listen_time += 100;1901 duration = msecs_to_jiffies(extra_listen_time);1902 wait_for_completion_timeout(&p2p->wait_next_af,1903 duration);1904 }1905 clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN,1906 &p2p->status);1907 }1908 }1909 1910 if (p2p->block_gon_req_tx) {1911 /* if ack is true, supplicant will wait more time(100ms).1912 * so we will return it as a success to get more time .1913 */1914 p2p->block_gon_req_tx = false;1915 ack = true;1916 }1917 1918 clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status);1919 /* if all done, turn mpc on again */1920 if (config_af_params.mpc_onoff == 1)1921 brcmf_set_mpc(ifp, 1);1922 1923 return ack;1924}1925 1926/**1927 * brcmf_p2p_notify_rx_mgmt_p2p_probereq() - Event handler for p2p probe req.1928 *1929 * @ifp: interface pointer for which event was received.1930 * @e: even message.1931 * @data: payload of event message (probe request).1932 */1933s32 brcmf_p2p_notify_rx_mgmt_p2p_probereq(struct brcmf_if *ifp,1934 const struct brcmf_event_msg *e,1935 void *data)1936{1937 struct brcmf_cfg80211_info *cfg = ifp->drvr->config;1938 struct brcmf_p2p_info *p2p = &cfg->p2p;1939 struct afx_hdl *afx_hdl = &p2p->afx_hdl;1940 struct brcmf_cfg80211_vif *vif = ifp->vif;1941 struct brcmf_rx_mgmt_data *rxframe = (struct brcmf_rx_mgmt_data *)data;1942 struct brcmu_chan ch;1943 u8 *mgmt_frame;1944 u32 mgmt_frame_len;1945 s32 freq;1946 u16 mgmt_type;1947 1948 brcmf_dbg(INFO, "Enter: event %d reason %d\n", e->event_code,1949 e->reason);1950 1951 if (e->datalen < sizeof(*rxframe)) {1952 brcmf_dbg(SCAN, "Event data to small. Ignore\n");1953 return 0;1954 }1955 1956 ch.chspec = be16_to_cpu(rxframe->chanspec);1957 cfg->d11inf.decchspec(&ch);1958 1959 if (test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status) &&1960 (ether_addr_equal(afx_hdl->tx_dst_addr, e->addr))) {1961 afx_hdl->peer_chan = ch.control_ch_num;1962 brcmf_dbg(INFO, "PROBE REQUEST: Peer found, channel=%d\n",1963 afx_hdl->peer_chan);1964 complete(&afx_hdl->act_frm_scan);1965 }1966 1967 /* Firmware sends us two proberesponses for each idx one. At the */1968 /* moment anything but bsscfgidx 0 is passed up to supplicant */1969 if (e->bsscfgidx == 0)1970 return 0;1971 1972 /* Filter any P2P probe reqs arriving during the GO-NEG Phase */1973 if (test_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status)) {1974 brcmf_dbg(INFO, "Filtering P2P probe_req in GO-NEG phase\n");1975 return 0;1976 }1977 1978 /* Check if wpa_supplicant has registered for this frame */1979 brcmf_dbg(INFO, "vif->mgmt_rx_reg %04x\n", vif->mgmt_rx_reg);1980 mgmt_type = (IEEE80211_STYPE_PROBE_REQ & IEEE80211_FCTL_STYPE) >> 4;1981 if ((vif->mgmt_rx_reg & BIT(mgmt_type)) == 0)1982 return 0;1983 1984 mgmt_frame = (u8 *)(rxframe + 1);1985 mgmt_frame_len = e->datalen - sizeof(*rxframe);1986 freq = ieee80211_channel_to_frequency(ch.control_ch_num,1987 ch.band == BRCMU_CHAN_BAND_2G ?1988 NL80211_BAND_2GHZ :1989 NL80211_BAND_5GHZ);1990 1991 cfg80211_rx_mgmt(&vif->wdev, freq, 0, mgmt_frame, mgmt_frame_len, 0);1992 1993 brcmf_dbg(INFO, "mgmt_frame_len (%d) , e->datalen (%d), chanspec (%04x), freq (%d)\n",1994 mgmt_frame_len, e->datalen, ch.chspec, freq);1995 1996 return 0;1997}1998 1999 2000/**2001 * brcmf_p2p_get_current_chanspec() - Get current operation channel.2002 *2003 * @p2p: P2P specific data.2004 * @chanspec: chanspec to be returned.2005 */2006static void brcmf_p2p_get_current_chanspec(struct brcmf_p2p_info *p2p,2007 u16 *chanspec)2008{2009 struct brcmf_if *ifp;2010 u8 mac_addr[ETH_ALEN];2011 struct brcmu_chan ch;2012 struct brcmf_bss_info_le *bi;2013 u8 *buf;2014 2015 ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp;2016 2017 if (brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_BSSID, mac_addr,2018 ETH_ALEN) == 0) {2019 buf = kzalloc(WL_BSS_INFO_MAX, GFP_KERNEL);2020 if (buf != NULL) {2021 *(__le32 *)buf = cpu_to_le32(WL_BSS_INFO_MAX);2022 if (brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_BSS_INFO,2023 buf, WL_BSS_INFO_MAX) == 0) {2024 bi = (struct brcmf_bss_info_le *)(buf + 4);2025 *chanspec = le16_to_cpu(bi->chanspec);2026 kfree(buf);2027 return;2028 }2029 kfree(buf);2030 }2031 }2032 /* Use default channel for P2P */2033 ch.chnum = BRCMF_P2P_TEMP_CHAN;2034 ch.bw = BRCMU_CHAN_BW_20;2035 p2p->cfg->d11inf.encchspec(&ch);2036 *chanspec = ch.chspec;2037}2038 2039/**2040 * brcmf_p2p_ifchange - Change a P2P Role.2041 * @cfg: driver private data for cfg80211 interface.2042 * @if_type: interface type.2043 * Returns 0 if success.2044 */2045int brcmf_p2p_ifchange(struct brcmf_cfg80211_info *cfg,2046 enum brcmf_fil_p2p_if_types if_type)2047{2048 struct brcmf_p2p_info *p2p = &cfg->p2p;2049 struct brcmf_pub *drvr = cfg->pub;2050 struct brcmf_cfg80211_vif *vif;2051 struct brcmf_fil_p2p_if_le if_request;2052 s32 err;2053 u16 chanspec;2054 2055 brcmf_dbg(TRACE, "Enter\n");2056 2057 vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif;2058 if (!vif) {2059 bphy_err(drvr, "vif for P2PAPI_BSSCFG_PRIMARY does not exist\n");2060 return -EPERM;2061 }2062 brcmf_notify_escan_complete(cfg, vif->ifp, true, true);2063 vif = p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif;2064 if (!vif) {2065 bphy_err(drvr, "vif for P2PAPI_BSSCFG_CONNECTION does not exist\n");2066 return -EPERM;2067 }2068 brcmf_set_mpc(vif->ifp, 0);2069 2070 /* In concurrency case, STA may be already associated in a particular */2071 /* channel. so retrieve the current channel of primary interface and */2072 /* then start the virtual interface on that. */2073 brcmf_p2p_get_current_chanspec(p2p, &chanspec);2074 2075 if_request.type = cpu_to_le16((u16)if_type);2076 if_request.chspec = cpu_to_le16(chanspec);2077 memcpy(if_request.addr, p2p->conn_int_addr, sizeof(if_request.addr));2078 2079 brcmf_cfg80211_arm_vif_event(cfg, vif);2080 err = brcmf_fil_iovar_data_set(vif->ifp, "p2p_ifupd", &if_request,2081 sizeof(if_request));2082 if (err) {2083 bphy_err(drvr, "p2p_ifupd FAILED, err=%d\n", err);2084 brcmf_cfg80211_arm_vif_event(cfg, NULL);2085 return err;2086 }2087 err = brcmf_cfg80211_wait_vif_event(cfg, BRCMF_E_IF_CHANGE,2088 BRCMF_VIF_EVENT_TIMEOUT);2089 brcmf_cfg80211_arm_vif_event(cfg, NULL);2090 if (!err) {2091 bphy_err(drvr, "No BRCMF_E_IF_CHANGE event received\n");2092 return -EIO;2093 }2094 2095 err = brcmf_fil_cmd_int_set(vif->ifp, BRCMF_C_SET_SCB_TIMEOUT,2096 BRCMF_SCB_TIMEOUT_VALUE);2097 2098 return err;2099}2100 2101static int brcmf_p2p_request_p2p_if(struct brcmf_p2p_info *p2p,2102 struct brcmf_if *ifp, u8 ea[ETH_ALEN],2103 enum brcmf_fil_p2p_if_types iftype)2104{2105 struct brcmf_fil_p2p_if_le if_request;2106 int err;2107 u16 chanspec;2108 2109 /* we need a default channel */2110 brcmf_p2p_get_current_chanspec(p2p, &chanspec);2111 2112 /* fill the firmware request */2113 memcpy(if_request.addr, ea, ETH_ALEN);2114 if_request.type = cpu_to_le16((u16)iftype);2115 if_request.chspec = cpu_to_le16(chanspec);2116 2117 err = brcmf_fil_iovar_data_set(ifp, "p2p_ifadd", &if_request,2118 sizeof(if_request));2119 2120 return err;2121}2122 2123static int brcmf_p2p_disable_p2p_if(struct brcmf_cfg80211_vif *vif)2124{2125 struct brcmf_cfg80211_info *cfg = wdev_to_cfg(&vif->wdev);2126 struct net_device *pri_ndev = cfg_to_ndev(cfg);2127 struct brcmf_if *ifp = netdev_priv(pri_ndev);2128 const u8 *addr = vif->wdev.netdev->dev_addr;2129 2130 return brcmf_fil_iovar_data_set(ifp, "p2p_ifdis", addr, ETH_ALEN);2131}2132 2133static int brcmf_p2p_release_p2p_if(struct brcmf_cfg80211_vif *vif)2134{2135 struct brcmf_cfg80211_info *cfg = wdev_to_cfg(&vif->wdev);2136 struct net_device *pri_ndev = cfg_to_ndev(cfg);2137 struct brcmf_if *ifp = netdev_priv(pri_ndev);2138 const u8 *addr = vif->wdev.netdev->dev_addr;2139 2140 return brcmf_fil_iovar_data_set(ifp, "p2p_ifdel", addr, ETH_ALEN);2141}2142 2143/**2144 * brcmf_p2p_create_p2pdev() - create a P2P_DEVICE virtual interface.2145 *2146 * @p2p: P2P specific data.2147 * @wiphy: wiphy device of new interface.2148 * @addr: mac address for this new interface.2149 */2150static struct wireless_dev *brcmf_p2p_create_p2pdev(struct brcmf_p2p_info *p2p,2151 struct wiphy *wiphy,2152 u8 *addr)2153{2154 struct brcmf_pub *drvr = p2p->cfg->pub;2155 struct brcmf_cfg80211_vif *p2p_vif;2156 struct brcmf_if *p2p_ifp;2157 struct brcmf_if *pri_ifp;2158 int err;2159 u32 bsscfgidx;2160 2161 if (p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif)2162 return ERR_PTR(-ENOSPC);2163 2164 p2p_vif = brcmf_alloc_vif(p2p->cfg, NL80211_IFTYPE_P2P_DEVICE);2165 if (IS_ERR(p2p_vif)) {2166 bphy_err(drvr, "could not create discovery vif\n");2167 return (struct wireless_dev *)p2p_vif;2168 }2169 2170 pri_ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp;2171 2172 /* firmware requires unique mac address for p2pdev interface */2173 if (addr && ether_addr_equal(addr, pri_ifp->mac_addr)) {2174 bphy_err(drvr, "discovery vif must be different from primary interface\n");2175 err = -EINVAL;2176 goto fail;2177 }2178 2179 brcmf_p2p_generate_bss_mac(p2p, addr);2180 brcmf_p2p_set_firmware(pri_ifp, p2p->dev_addr);2181 2182 brcmf_cfg80211_arm_vif_event(p2p->cfg, p2p_vif);2183 brcmf_fweh_p2pdev_setup(pri_ifp, true);2184 2185 /* Initialize P2P Discovery in the firmware */2186 err = brcmf_fil_iovar_int_set(pri_ifp, "p2p_disc", 1);2187 if (err < 0) {2188 bphy_err(drvr, "set p2p_disc error\n");2189 brcmf_fweh_p2pdev_setup(pri_ifp, false);2190 brcmf_cfg80211_arm_vif_event(p2p->cfg, NULL);2191 goto fail;2192 }2193 2194 /* wait for firmware event */2195 err = brcmf_cfg80211_wait_vif_event(p2p->cfg, BRCMF_E_IF_ADD,2196 BRCMF_VIF_EVENT_TIMEOUT);2197 brcmf_cfg80211_arm_vif_event(p2p->cfg, NULL);2198 brcmf_fweh_p2pdev_setup(pri_ifp, false);2199 if (!err) {2200 bphy_err(drvr, "timeout occurred\n");2201 err = -EIO;2202 goto fail;2203 }2204 2205 /* discovery interface created */2206 p2p_ifp = p2p_vif->ifp;2207 p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif = p2p_vif;2208 memcpy(p2p_ifp->mac_addr, p2p->dev_addr, ETH_ALEN);2209 memcpy(&p2p_vif->wdev.address, p2p->dev_addr, sizeof(p2p->dev_addr));2210 2211 /* verify bsscfg index for P2P discovery */2212 err = brcmf_fil_iovar_int_get(pri_ifp, "p2p_dev", &bsscfgidx);2213 if (err < 0) {2214 bphy_err(drvr, "retrieving discover bsscfg index failed\n");2215 goto fail;2216 }2217 2218 WARN_ON(p2p_ifp->bsscfgidx != bsscfgidx);2219 2220 init_completion(&p2p->send_af_done);2221 INIT_WORK(&p2p->afx_hdl.afx_work, brcmf_p2p_afx_handler);2222 init_completion(&p2p->afx_hdl.act_frm_scan);2223 init_completion(&p2p->wait_next_af);2224 2225 return &p2p_vif->wdev;2226 2227fail:2228 brcmf_free_vif(p2p_vif);2229 return ERR_PTR(err);2230}2231 2232static int brcmf_p2p_get_conn_idx(struct brcmf_cfg80211_info *cfg)2233{2234 int i;2235 struct brcmf_if *ifp = netdev_priv(cfg_to_ndev(cfg));2236 2237 if (!ifp)2238 return -ENODEV;2239 2240 for (i = P2PAPI_BSSCFG_CONNECTION; i < P2PAPI_BSSCFG_MAX; i++) {2241 if (!cfg->p2p.bss_idx[i].vif) {2242 if (i == P2PAPI_BSSCFG_CONNECTION2 &&2243 !(brcmf_feat_is_enabled(ifp, BRCMF_FEAT_RSDB))) {2244 brcmf_err("Multi p2p not supported");2245 return -EIO;2246 }2247 return i;2248 }2249 }2250 return -EIO;2251}2252 2253/**2254 * brcmf_p2p_add_vif() - create a new P2P virtual interface.2255 *2256 * @wiphy: wiphy device of new interface.2257 * @name: name of the new interface.2258 * @name_assign_type: origin of the interface name2259 * @type: nl80211 interface type.2260 * @params: contains mac address for P2P device.2261 */2262struct wireless_dev *brcmf_p2p_add_vif(struct wiphy *wiphy, const char *name,2263 unsigned char name_assign_type,2264 enum nl80211_iftype type,2265 struct vif_params *params)2266{2267 struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);2268 struct brcmf_if *ifp = netdev_priv(cfg_to_ndev(cfg));2269 struct brcmf_pub *drvr = cfg->pub;2270 struct brcmf_cfg80211_vif *vif;2271 enum brcmf_fil_p2p_if_types iftype;2272 int err = 0;2273 int connidx;2274 u8 *p2p_intf_addr;2275 2276 if (brcmf_cfg80211_vif_event_armed(cfg))2277 return ERR_PTR(-EBUSY);2278 2279 brcmf_dbg(INFO, "adding vif \"%s\" (type=%d)\n", name, type);2280 2281 switch (type) {2282 case NL80211_IFTYPE_P2P_CLIENT:2283 iftype = BRCMF_FIL_P2P_IF_CLIENT;2284 break;2285 case NL80211_IFTYPE_P2P_GO:2286 iftype = BRCMF_FIL_P2P_IF_GO;2287 break;2288 case NL80211_IFTYPE_P2P_DEVICE:2289 return brcmf_p2p_create_p2pdev(&cfg->p2p, wiphy,2290 params->macaddr);2291 default:2292 return ERR_PTR(-EOPNOTSUPP);2293 }2294 2295 vif = brcmf_alloc_vif(cfg, type);2296 if (IS_ERR(vif))2297 return (struct wireless_dev *)vif;2298 brcmf_cfg80211_arm_vif_event(cfg, vif);2299 2300 connidx = brcmf_p2p_get_conn_idx(cfg);2301 2302 if (connidx == P2PAPI_BSSCFG_CONNECTION)2303 p2p_intf_addr = cfg->p2p.conn_int_addr;2304 else if (connidx == P2PAPI_BSSCFG_CONNECTION2)2305 p2p_intf_addr = cfg->p2p.conn2_int_addr;2306 else2307 err = -EINVAL;2308 2309 if (!err)2310 err = brcmf_p2p_request_p2p_if(&cfg->p2p, ifp,2311 p2p_intf_addr, iftype);2312 2313 if (err) {2314 brcmf_err("request p2p interface failed\n");2315 brcmf_cfg80211_arm_vif_event(cfg, NULL);2316 goto fail;2317 }2318 2319 /* wait for firmware event */2320 err = brcmf_cfg80211_wait_vif_event(cfg, BRCMF_E_IF_ADD,2321 BRCMF_VIF_EVENT_TIMEOUT);2322 brcmf_cfg80211_arm_vif_event(cfg, NULL);2323 if (!err) {2324 bphy_err(drvr, "timeout occurred\n");2325 err = -EIO;2326 goto fail;2327 }2328 2329 /* interface created in firmware */2330 ifp = vif->ifp;2331 if (!ifp) {2332 bphy_err(drvr, "no if pointer provided\n");2333 err = -ENOENT;2334 goto fail;2335 }2336 2337 strscpy(ifp->ndev->name, name, sizeof(ifp->ndev->name));2338 ifp->ndev->name_assign_type = name_assign_type;2339 err = brcmf_net_attach(ifp, true);2340 if (err) {2341 bphy_err(drvr, "Registering netdevice failed\n");2342 free_netdev(ifp->ndev);2343 goto fail;2344 }2345 2346 cfg->p2p.bss_idx[connidx].vif = vif;2347 /* Disable firmware roaming for P2P interface */2348 brcmf_fil_iovar_int_set(ifp, "roam_off", 1);2349 if (iftype == BRCMF_FIL_P2P_IF_GO) {2350 /* set station timeout for p2p */2351 brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCB_TIMEOUT,2352 BRCMF_SCB_TIMEOUT_VALUE);2353 }2354 return &ifp->vif->wdev;2355 2356fail:2357 brcmf_free_vif(vif);2358 return ERR_PTR(err);2359}2360 2361/**2362 * brcmf_p2p_del_vif() - delete a P2P virtual interface.2363 *2364 * @wiphy: wiphy device of interface.2365 * @wdev: wireless device of interface.2366 */2367int brcmf_p2p_del_vif(struct wiphy *wiphy, struct wireless_dev *wdev)2368{2369 struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);2370 struct brcmf_p2p_info *p2p = &cfg->p2p;2371 struct brcmf_cfg80211_vif *vif;2372 enum nl80211_iftype iftype;2373 bool wait_for_disable = false;2374 int err;2375 2376 brcmf_dbg(TRACE, "delete P2P vif\n");2377 vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev);2378 2379 iftype = vif->wdev.iftype;2380 brcmf_cfg80211_arm_vif_event(cfg, vif);2381 switch (iftype) {2382 case NL80211_IFTYPE_P2P_CLIENT:2383 if (test_bit(BRCMF_VIF_STATUS_DISCONNECTING, &vif->sme_state))2384 wait_for_disable = true;2385 break;2386 2387 case NL80211_IFTYPE_P2P_GO:2388 if (!brcmf_p2p_disable_p2p_if(vif))2389 wait_for_disable = true;2390 break;2391 2392 case NL80211_IFTYPE_P2P_DEVICE:2393 if (!p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif)2394 return 0;2395 brcmf_p2p_cancel_remain_on_channel(vif->ifp);2396 brcmf_p2p_deinit_discovery(p2p);2397 break;2398 2399 default:2400 return -ENOTSUPP;2401 }2402 2403 clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);2404 brcmf_dbg(INFO, "P2P: GO_NEG_PHASE status cleared\n");2405 2406 if (wait_for_disable)2407 wait_for_completion_timeout(&cfg->vif_disabled,2408 BRCMF_P2P_DISABLE_TIMEOUT);2409 2410 err = 0;2411 if (iftype != NL80211_IFTYPE_P2P_DEVICE) {2412 brcmf_vif_clear_mgmt_ies(vif);2413 err = brcmf_p2p_release_p2p_if(vif);2414 }2415 if (!err) {2416 /* wait for firmware event */2417 err = brcmf_cfg80211_wait_vif_event(cfg, BRCMF_E_IF_DEL,2418 BRCMF_VIF_EVENT_TIMEOUT);2419 if (!err)2420 err = -EIO;2421 else2422 err = 0;2423 }2424 brcmf_remove_interface(vif->ifp, true);2425 2426 brcmf_cfg80211_arm_vif_event(cfg, NULL);2427 if (iftype != NL80211_IFTYPE_P2P_DEVICE) {2428 if (vif == p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif)2429 p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif = NULL;2430 if (vif == p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION2].vif)2431 p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION2].vif = NULL;2432 }2433 2434 return err;2435}2436 2437void brcmf_p2p_ifp_removed(struct brcmf_if *ifp, bool locked)2438{2439 struct brcmf_cfg80211_info *cfg;2440 struct brcmf_cfg80211_vif *vif;2441 2442 brcmf_dbg(INFO, "P2P: device interface removed\n");2443 vif = ifp->vif;2444 cfg = wdev_to_cfg(&vif->wdev);2445 cfg->p2p.bss_idx[P2PAPI_BSSCFG_DEVICE].vif = NULL;2446 if (!locked) {2447 rtnl_lock();2448 wiphy_lock(cfg->wiphy);2449 cfg80211_unregister_wdev(&vif->wdev);2450 wiphy_unlock(cfg->wiphy);2451 rtnl_unlock();2452 } else {2453 cfg80211_unregister_wdev(&vif->wdev);2454 }2455 brcmf_free_vif(vif);2456}2457 2458int brcmf_p2p_start_device(struct wiphy *wiphy, struct wireless_dev *wdev)2459{2460 struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);2461 struct brcmf_p2p_info *p2p = &cfg->p2p;2462 struct brcmf_cfg80211_vif *vif;2463 int err;2464 2465 vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev);2466 mutex_lock(&cfg->usr_sync);2467 err = brcmf_p2p_enable_discovery(p2p);2468 if (!err)2469 set_bit(BRCMF_VIF_STATUS_READY, &vif->sme_state);2470 mutex_unlock(&cfg->usr_sync);2471 return err;2472}2473 2474void brcmf_p2p_stop_device(struct wiphy *wiphy, struct wireless_dev *wdev)2475{2476 struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);2477 struct brcmf_p2p_info *p2p = &cfg->p2p;2478 struct brcmf_cfg80211_vif *vif;2479 2480 vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev);2481 /* This call can be result of the unregister_wdev call. In that case2482 * we dont want to do anything anymore. Just return. The config vif2483 * will have been cleared at this point.2484 */2485 if (p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif == vif) {2486 mutex_lock(&cfg->usr_sync);2487 /* Set the discovery state to SCAN */2488 (void)brcmf_p2p_set_discover_state(vif->ifp,2489 WL_P2P_DISC_ST_SCAN, 0, 0);2490 brcmf_abort_scanning(cfg);2491 clear_bit(BRCMF_VIF_STATUS_READY, &vif->sme_state);2492 mutex_unlock(&cfg->usr_sync);2493 }2494}2495 2496/**2497 * brcmf_p2p_attach() - attach for P2P.2498 *2499 * @cfg: driver private data for cfg80211 interface.2500 * @p2pdev_forced: create p2p device interface at attach.2501 */2502s32 brcmf_p2p_attach(struct brcmf_cfg80211_info *cfg, bool p2pdev_forced)2503{2504 struct brcmf_pub *drvr = cfg->pub;2505 struct brcmf_p2p_info *p2p;2506 struct brcmf_if *pri_ifp;2507 s32 err = 0;2508 void *err_ptr;2509 2510 p2p = &cfg->p2p;2511 p2p->cfg = cfg;2512 2513 pri_ifp = brcmf_get_ifp(cfg->pub, 0);2514 p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif = pri_ifp->vif;2515 2516 if (p2pdev_forced) {2517 err_ptr = brcmf_p2p_create_p2pdev(p2p, NULL, NULL);2518 if (IS_ERR(err_ptr)) {2519 bphy_err(drvr, "P2P device creation failed.\n");2520 err = PTR_ERR(err_ptr);2521 }2522 } else {2523 p2p->p2pdev_dynamically = true;2524 }2525 return err;2526}2527 2528/**2529 * brcmf_p2p_detach() - detach P2P.2530 *2531 * @p2p: P2P specific data.2532 */2533void brcmf_p2p_detach(struct brcmf_p2p_info *p2p)2534{2535 struct brcmf_cfg80211_vif *vif;2536 2537 vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;2538 if (vif != NULL) {2539 brcmf_p2p_cancel_remain_on_channel(vif->ifp);2540 brcmf_p2p_deinit_discovery(p2p);2541 brcmf_remove_interface(vif->ifp, false);2542 }2543 /* just set it all to zero */2544 memset(p2p, 0, sizeof(*p2p));2545}2546 2547