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	Version: linux-6.0.1 spark-3.0.0 hadoop-3.2.0-src hadoop-3.3.0-src spark-2.4.7 linux-4.15.13 hadoop-2.7.4-src Revert   Change

 // SPDX-License-Identifier: ISC
 /*
  * Copyright (c) 2012 Broadcom Corporation
  */
 #include <linux/slab.h>
 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>
 #include <linux/rtnetlink.h>
 #include <net/cfg80211.h>
 
 #include <brcmu_wifi.h>
 #include <brcmu_utils.h>
 #include <defs.h>
 #include "core.h"
 #include "debug.h"
 #include "fwil.h"
 #include "fwil_types.h"
 #include "p2p.h"
 #include "cfg80211.h"
 #include "feature.h"
 
 /* parameters used for p2p escan */
 #define P2PAPI_SCAN_NPROBES 1
 #define P2PAPI_SCAN_DWELL_TIME_MS 80
 #define P2PAPI_SCAN_SOCIAL_DWELL_TIME_MS 40
 #define P2PAPI_SCAN_HOME_TIME_MS 60
 #define P2PAPI_SCAN_NPROBS_TIME_MS 30
 #define P2PAPI_SCAN_AF_SEARCH_DWELL_TIME_MS 100
 #define WL_SCAN_CONNECT_DWELL_TIME_MS 200
 #define WL_SCAN_JOIN_PROBE_INTERVAL_MS 20
 
 #define BRCMF_P2P_WILDCARD_SSID     "DIRECT-"
 #define BRCMF_P2P_WILDCARD_SSID_LEN (sizeof(BRCMF_P2P_WILDCARD_SSID) - 1)
 
 #define SOCIAL_CHAN_1       1
 #define SOCIAL_CHAN_2       6
 #define SOCIAL_CHAN_3       11
 #define IS_P2P_SOCIAL_CHANNEL(channel) ((channel == SOCIAL_CHAN_1) || \
                      (channel == SOCIAL_CHAN_2) || \
                      (channel == SOCIAL_CHAN_3))
 #define BRCMF_P2P_TEMP_CHAN SOCIAL_CHAN_3
 #define SOCIAL_CHAN_CNT     3
 #define AF_PEER_SEARCH_CNT  2
 
 #define BRCMF_SCB_TIMEOUT_VALUE 20
 
 #define P2P_VER         9   /* P2P version: 9=WiFi P2P v1.0 */
 #define P2P_PUB_AF_CATEGORY 0x04
 #define P2P_PUB_AF_ACTION   0x09
 #define P2P_AF_CATEGORY     0x7f
 #define P2P_OUI         "\x50\x6F\x9A"  /* P2P OUI */
 #define P2P_OUI_LEN     3       /* P2P OUI length */
 
 /* Action Frame Constants */
 #define DOT11_ACTION_HDR_LEN    2   /* action frame category + action */
 #define DOT11_ACTION_CAT_OFF    0   /* category offset */
 #define DOT11_ACTION_ACT_OFF    1   /* action offset */
 
 #define P2P_AF_DWELL_TIME       200
 #define P2P_AF_MIN_DWELL_TIME       100
 #define P2P_AF_MED_DWELL_TIME       400
 #define P2P_AF_LONG_DWELL_TIME      1000
 #define P2P_AF_TX_MAX_RETRY     5
 #define P2P_AF_MAX_WAIT_TIME        msecs_to_jiffies(2000)
 #define P2P_INVALID_CHANNEL     -1
 #define P2P_CHANNEL_SYNC_RETRY      5
 #define P2P_AF_FRM_SCAN_MAX_WAIT    msecs_to_jiffies(450)
 #define P2P_DEFAULT_SLEEP_TIME_VSDB 200
 #define P2P_AF_RETRY_DELAY_TIME     40
 
 /* WiFi P2P Public Action Frame OUI Subtypes */
 #define P2P_PAF_GON_REQ     0   /* Group Owner Negotiation Req */
 #define P2P_PAF_GON_RSP     1   /* Group Owner Negotiation Rsp */
 #define P2P_PAF_GON_CONF    2   /* Group Owner Negotiation Confirm */
 #define P2P_PAF_INVITE_REQ  3   /* P2P Invitation Request */
 #define P2P_PAF_INVITE_RSP  4   /* P2P Invitation Response */
 #define P2P_PAF_DEVDIS_REQ  5   /* Device Discoverability Request */
 #define P2P_PAF_DEVDIS_RSP  6   /* Device Discoverability Response */
 #define P2P_PAF_PROVDIS_REQ 7   /* Provision Discovery Request */
 #define P2P_PAF_PROVDIS_RSP 8   /* Provision Discovery Response */
 #define P2P_PAF_SUBTYPE_INVALID 255 /* Invalid Subtype */
 
 /* WiFi P2P Action Frame OUI Subtypes */
 #define P2P_AF_NOTICE_OF_ABSENCE    0   /* Notice of Absence */
 #define P2P_AF_PRESENCE_REQ     1   /* P2P Presence Request */
 #define P2P_AF_PRESENCE_RSP     2   /* P2P Presence Response */
 #define P2P_AF_GO_DISC_REQ      3   /* GO Discoverability Request */
 
 /* P2P Service Discovery related */
 #define P2PSD_ACTION_CATEGORY       0x04    /* Public action frame */
 #define P2PSD_ACTION_ID_GAS_IREQ    0x0a    /* GAS Initial Request AF */
 #define P2PSD_ACTION_ID_GAS_IRESP   0x0b    /* GAS Initial Response AF */
 #define P2PSD_ACTION_ID_GAS_CREQ    0x0c    /* GAS Comeback Request AF */
 #define P2PSD_ACTION_ID_GAS_CRESP   0x0d    /* GAS Comeback Response AF */
 
 #define BRCMF_P2P_DISABLE_TIMEOUT   msecs_to_jiffies(500)
 
 /* Mask for retry counter of custom dwell time */
 #define CUSTOM_RETRY_MASK 0xff000000
 /**
  * struct brcmf_p2p_disc_st_le - set discovery state in firmware.
  *
  * @state: requested discovery state (see enum brcmf_p2p_disc_state).
  * @chspec: channel parameter for %WL_P2P_DISC_ST_LISTEN state.
  * @dwell: dwell time in ms for %WL_P2P_DISC_ST_LISTEN state.
  */
 struct brcmf_p2p_disc_st_le {
     u8 state;
     __le16 chspec;
     __le16 dwell;
 };
 
 /**
  * enum brcmf_p2p_disc_state - P2P discovery state values
  *
  * @WL_P2P_DISC_ST_SCAN: P2P discovery with wildcard SSID and P2P IE.
  * @WL_P2P_DISC_ST_LISTEN: P2P discovery off-channel for specified time.
  * @WL_P2P_DISC_ST_SEARCH: P2P discovery with P2P wildcard SSID and P2P IE.
  */
 enum brcmf_p2p_disc_state {
     WL_P2P_DISC_ST_SCAN,
     WL_P2P_DISC_ST_LISTEN,
     WL_P2P_DISC_ST_SEARCH
 };
 
 /**
  * struct brcmf_p2p_scan_le - P2P specific scan request.
  *
  * @type: type of scan method requested (values: 'E' or 'S').
  * @reserved: reserved (ignored).
  * @eparams: parameters used for type 'E'.
  * @sparams: parameters used for type 'S'.
  */
 struct brcmf_p2p_scan_le {
     u8 type;
     u8 reserved[3];
     union {
         struct brcmf_escan_params_le eparams;
         struct brcmf_scan_params_le sparams;
     };
 };
 
 /**
  * struct brcmf_p2p_pub_act_frame - WiFi P2P Public Action Frame
  *
  * @category: P2P_PUB_AF_CATEGORY
  * @action: P2P_PUB_AF_ACTION
  * @oui: P2P_OUI
  * @oui_type: OUI type - P2P_VER
  * @subtype: OUI subtype - P2P_TYPE_*
  * @dialog_token: nonzero, identifies req/rsp transaction
  * @elts: Variable length information elements.
  */
 struct brcmf_p2p_pub_act_frame {
     u8  category;
     u8  action;
     u8  oui[3];
     u8  oui_type;
     u8  subtype;
     u8  dialog_token;
     u8  elts[];
 };
 
 /**
  * struct brcmf_p2p_action_frame - WiFi P2P Action Frame
  *
  * @category: P2P_AF_CATEGORY
  * @oui: OUI - P2P_OUI
  * @type: OUI Type - P2P_VER
  * @subtype: OUI Subtype - P2P_AF_*
  * @dialog_token: nonzero, identifies req/resp tranaction
  * @elts: Variable length information elements.
  */
 struct brcmf_p2p_action_frame {
     u8  category;
     u8  oui[3];
     u8  type;
     u8  subtype;
     u8  dialog_token;
     u8  elts[];
 };
 
 /**
  * struct brcmf_p2psd_gas_pub_act_frame - Wi-Fi GAS Public Action Frame
  *
  * @category: 0x04 Public Action Frame
  * @action: 0x6c Advertisement Protocol
  * @dialog_token: nonzero, identifies req/rsp transaction
  * @query_data: Query Data. SD gas ireq SD gas iresp
  */
 struct brcmf_p2psd_gas_pub_act_frame {
     u8  category;
     u8  action;
     u8  dialog_token;
     u8  query_data[];
 };
 
 /**
  * struct brcmf_config_af_params - Action Frame Parameters for tx.
  *
  * @mpc_onoff: To make sure to send successfully action frame, we have to
  *             turn off mpc  0: off, 1: on,  (-1): do nothing
  * @search_channel: 1: search peer's channel to send af
  * @extra_listen: keep the dwell time to get af response frame.
  */
 struct brcmf_config_af_params {
     s32 mpc_onoff;
     bool search_channel;
     bool extra_listen;
 };
 
 /**
  * brcmf_p2p_is_pub_action() - true if p2p public type frame.
  *
  * @frame: action frame data.
  * @frame_len: length of action frame data.
  *
  * Determine if action frame is p2p public action type
  */
 static bool brcmf_p2p_is_pub_action(void *frame, u32 frame_len)
 {
     struct brcmf_p2p_pub_act_frame *pact_frm;
 
     if (frame == NULL)
         return false;
 
     pact_frm = (struct brcmf_p2p_pub_act_frame *)frame;
     if (frame_len < sizeof(*pact_frm))
         return false;
 
     if (pact_frm->category == P2P_PUB_AF_CATEGORY &&
         pact_frm->action == P2P_PUB_AF_ACTION &&
         pact_frm->oui_type == P2P_VER &&
         memcmp(pact_frm->oui, P2P_OUI, P2P_OUI_LEN) == 0)
         return true;
 
     return false;
 }
 
 /**
  * brcmf_p2p_is_p2p_action() - true if p2p action type frame.
  *
  * @frame: action frame data.
  * @frame_len: length of action frame data.
  *
  * Determine if action frame is p2p action type
  */
 static bool brcmf_p2p_is_p2p_action(void *frame, u32 frame_len)
 {
     struct brcmf_p2p_action_frame *act_frm;
 
     if (frame == NULL)
         return false;
 
     act_frm = (struct brcmf_p2p_action_frame *)frame;
     if (frame_len < sizeof(*act_frm))
         return false;
 
     if (act_frm->category == P2P_AF_CATEGORY &&
         act_frm->type  == P2P_VER &&
         memcmp(act_frm->oui, P2P_OUI, P2P_OUI_LEN) == 0)
         return true;
 
     return false;
 }
 
 /**
  * brcmf_p2p_is_gas_action() - true if p2p gas action type frame.
  *
  * @frame: action frame data.
  * @frame_len: length of action frame data.
  *
  * Determine if action frame is p2p gas action type
  */
 static bool brcmf_p2p_is_gas_action(void *frame, u32 frame_len)
 {
     struct brcmf_p2psd_gas_pub_act_frame *sd_act_frm;
 
     if (frame == NULL)
         return false;
 
     sd_act_frm = (struct brcmf_p2psd_gas_pub_act_frame *)frame;
     if (frame_len < sizeof(*sd_act_frm))
         return false;
 
     if (sd_act_frm->category != P2PSD_ACTION_CATEGORY)
         return false;
 
     if (sd_act_frm->action == P2PSD_ACTION_ID_GAS_IREQ ||
         sd_act_frm->action == P2PSD_ACTION_ID_GAS_IRESP ||
         sd_act_frm->action == P2PSD_ACTION_ID_GAS_CREQ ||
         sd_act_frm->action == P2PSD_ACTION_ID_GAS_CRESP)
         return true;
 
     return false;
 }
 
 /**
  * brcmf_p2p_print_actframe() - debug print routine.
  *
  * @tx: Received or to be transmitted
  * @frame: action frame data.
  * @frame_len: length of action frame data.
  *
  * Print information about the p2p action frame
  */
 
 #ifdef DEBUG
 
 static void brcmf_p2p_print_actframe(bool tx, void *frame, u32 frame_len)
 {
     struct brcmf_p2p_pub_act_frame *pact_frm;
     struct brcmf_p2p_action_frame *act_frm;
     struct brcmf_p2psd_gas_pub_act_frame *sd_act_frm;
 
     if (!frame || frame_len <= 2)
         return;
 
     if (brcmf_p2p_is_pub_action(frame, frame_len)) {
         pact_frm = (struct brcmf_p2p_pub_act_frame *)frame;
         switch (pact_frm->subtype) {
         case P2P_PAF_GON_REQ:
             brcmf_dbg(TRACE, "%s P2P Group Owner Negotiation Req Frame\n",
                   (tx) ? "TX" : "RX");
             break;
         case P2P_PAF_GON_RSP:
             brcmf_dbg(TRACE, "%s P2P Group Owner Negotiation Rsp Frame\n",
                   (tx) ? "TX" : "RX");
             break;
         case P2P_PAF_GON_CONF:
             brcmf_dbg(TRACE, "%s P2P Group Owner Negotiation Confirm Frame\n",
                   (tx) ? "TX" : "RX");
             break;
         case P2P_PAF_INVITE_REQ:
             brcmf_dbg(TRACE, "%s P2P Invitation Request  Frame\n",
                   (tx) ? "TX" : "RX");
             break;
         case P2P_PAF_INVITE_RSP:
             brcmf_dbg(TRACE, "%s P2P Invitation Response Frame\n",
                   (tx) ? "TX" : "RX");
             break;
         case P2P_PAF_DEVDIS_REQ:
             brcmf_dbg(TRACE, "%s P2P Device Discoverability Request Frame\n",
                   (tx) ? "TX" : "RX");
             break;
         case P2P_PAF_DEVDIS_RSP:
             brcmf_dbg(TRACE, "%s P2P Device Discoverability Response Frame\n",
                   (tx) ? "TX" : "RX");
             break;
         case P2P_PAF_PROVDIS_REQ:
             brcmf_dbg(TRACE, "%s P2P Provision Discovery Request Frame\n",
                   (tx) ? "TX" : "RX");
             break;
         case P2P_PAF_PROVDIS_RSP:
             brcmf_dbg(TRACE, "%s P2P Provision Discovery Response Frame\n",
                   (tx) ? "TX" : "RX");
             break;
         default:
             brcmf_dbg(TRACE, "%s Unknown P2P Public Action Frame\n",
                   (tx) ? "TX" : "RX");
             break;
         }
     } else if (brcmf_p2p_is_p2p_action(frame, frame_len)) {
         act_frm = (struct brcmf_p2p_action_frame *)frame;
         switch (act_frm->subtype) {
         case P2P_AF_NOTICE_OF_ABSENCE:
             brcmf_dbg(TRACE, "%s P2P Notice of Absence Frame\n",
                   (tx) ? "TX" : "RX");
             break;
         case P2P_AF_PRESENCE_REQ:
             brcmf_dbg(TRACE, "%s P2P Presence Request Frame\n",
                   (tx) ? "TX" : "RX");
             break;
         case P2P_AF_PRESENCE_RSP:
             brcmf_dbg(TRACE, "%s P2P Presence Response Frame\n",
                   (tx) ? "TX" : "RX");
             break;
         case P2P_AF_GO_DISC_REQ:
             brcmf_dbg(TRACE, "%s P2P Discoverability Request Frame\n",
                   (tx) ? "TX" : "RX");
             break;
         default:
             brcmf_dbg(TRACE, "%s Unknown P2P Action Frame\n",
                   (tx) ? "TX" : "RX");
         }
 
     } else if (brcmf_p2p_is_gas_action(frame, frame_len)) {
         sd_act_frm = (struct brcmf_p2psd_gas_pub_act_frame *)frame;
         switch (sd_act_frm->action) {
         case P2PSD_ACTION_ID_GAS_IREQ:
             brcmf_dbg(TRACE, "%s P2P GAS Initial Request\n",
                   (tx) ? "TX" : "RX");
             break;
         case P2PSD_ACTION_ID_GAS_IRESP:
             brcmf_dbg(TRACE, "%s P2P GAS Initial Response\n",
                   (tx) ? "TX" : "RX");
             break;
         case P2PSD_ACTION_ID_GAS_CREQ:
             brcmf_dbg(TRACE, "%s P2P GAS Comeback Request\n",
                   (tx) ? "TX" : "RX");
             break;
         case P2PSD_ACTION_ID_GAS_CRESP:
             brcmf_dbg(TRACE, "%s P2P GAS Comeback Response\n",
                   (tx) ? "TX" : "RX");
             break;
         default:
             brcmf_dbg(TRACE, "%s Unknown P2P GAS Frame\n",
                   (tx) ? "TX" : "RX");
             break;
         }
     }
 }
 
 #else
 
 static void brcmf_p2p_print_actframe(bool tx, void *frame, u32 frame_len)
 {
 }
 
 #endif
 
 
 /**
  * brcmf_p2p_set_firmware() - prepare firmware for peer-to-peer operation.
  *
  * @ifp: ifp to use for iovars (primary).
  * @p2p_mac: mac address to configure for p2p_da_override
  */
 static int brcmf_p2p_set_firmware(struct brcmf_if *ifp, u8 *p2p_mac)
 {
     struct brcmf_pub *drvr = ifp->drvr;
     s32 ret = 0;
 
     brcmf_fil_cmd_int_set(ifp, BRCMF_C_DOWN, 1);
     brcmf_fil_iovar_int_set(ifp, "apsta", 1);
     brcmf_fil_cmd_int_set(ifp, BRCMF_C_UP, 1);
 
     /* In case of COB type, firmware has default mac address
      * After Initializing firmware, we have to set current mac address to
      * firmware for P2P device address. This must be done with discovery
      * disabled.
      */
     brcmf_fil_iovar_int_set(ifp, "p2p_disc", 0);
 
     ret = brcmf_fil_iovar_data_set(ifp, "p2p_da_override", p2p_mac,
                        ETH_ALEN);
     if (ret)
         bphy_err(drvr, "failed to update device address ret %d\n", ret);
 
     return ret;
 }
 
 /**
  * brcmf_p2p_generate_bss_mac() - derive mac addresses for P2P.
  *
  * @p2p: P2P specific data.
  * @dev_addr: optional device address.
  *
  * P2P needs mac addresses for P2P device and interface. If no device
  * address it specified, these are derived from a random ethernet
  * address.
  */
 static void brcmf_p2p_generate_bss_mac(struct brcmf_p2p_info *p2p, u8 *dev_addr)
 {
     struct brcmf_if *pri_ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp;
     bool random_addr = false;
     bool local_admin = false;
 
     if (!dev_addr || is_zero_ether_addr(dev_addr)) {
         /* If the primary interface address is already locally
          * administered, create a new random address.
          */
         if (pri_ifp->mac_addr[0] & 0x02) {
             random_addr = true;
         } else {
             dev_addr = pri_ifp->mac_addr;
             local_admin = true;
         }
     }
 
     /* Generate the P2P Device Address obtaining a random ethernet
      * address with the locally administered bit set.
      */
     if (random_addr)
         eth_random_addr(p2p->dev_addr);
     else
         memcpy(p2p->dev_addr, dev_addr, ETH_ALEN);
 
     if (local_admin)
         p2p->dev_addr[0] |= 0x02;
 
     /* Generate the P2P Interface Address.  If the discovery and connection
      * BSSCFGs need to simultaneously co-exist, then this address must be
      * different from the P2P Device Address, but also locally administered.
      */
     memcpy(p2p->conn_int_addr, p2p->dev_addr, ETH_ALEN);
     p2p->conn_int_addr[0] |= 0x02;
     p2p->conn_int_addr[4] ^= 0x80;
 
     memcpy(p2p->conn2_int_addr, p2p->dev_addr, ETH_ALEN);
     p2p->conn2_int_addr[0] |= 0x02;
     p2p->conn2_int_addr[4] ^= 0x90;
 }
 
 /**
  * brcmf_p2p_scan_is_p2p_request() - is cfg80211 scan request a P2P scan.
  *
  * @request: the scan request as received from cfg80211.
  *
  * returns true if one of the ssids in the request matches the
  * P2P wildcard ssid; otherwise returns false.
  */
 static bool brcmf_p2p_scan_is_p2p_request(struct cfg80211_scan_request *request)
 {
     struct cfg80211_ssid *ssids = request->ssids;
     int i;
 
     for (i = 0; i < request->n_ssids; i++) {
         if (ssids[i].ssid_len != BRCMF_P2P_WILDCARD_SSID_LEN)
             continue;
 
         brcmf_dbg(INFO, "comparing ssid \"%s\"", ssids[i].ssid);
         if (!memcmp(BRCMF_P2P_WILDCARD_SSID, ssids[i].ssid,
                 BRCMF_P2P_WILDCARD_SSID_LEN))
             return true;
     }
     return false;
 }
 
 /**
  * brcmf_p2p_set_discover_state - set discover state in firmware.
  *
  * @ifp: low-level interface object.
  * @state: discover state to set.
  * @chanspec: channel parameters (for state @WL_P2P_DISC_ST_LISTEN only).
  * @listen_ms: duration to listen (for state @WL_P2P_DISC_ST_LISTEN only).
  */
 static s32 brcmf_p2p_set_discover_state(struct brcmf_if *ifp, u8 state,
                     u16 chanspec, u16 listen_ms)
 {
     struct brcmf_p2p_disc_st_le discover_state;
     s32 ret = 0;
     brcmf_dbg(TRACE, "enter\n");
 
     discover_state.state = state;
     discover_state.chspec = cpu_to_le16(chanspec);
     discover_state.dwell = cpu_to_le16(listen_ms);
     ret = brcmf_fil_bsscfg_data_set(ifp, "p2p_state", &discover_state,
                     sizeof(discover_state));
     return ret;
 }
 
 /**
  * brcmf_p2p_deinit_discovery() - disable P2P device discovery.
  *
  * @p2p: P2P specific data.
  *
  * Resets the discovery state and disables it in firmware.
  */
 static s32 brcmf_p2p_deinit_discovery(struct brcmf_p2p_info *p2p)
 {
     struct brcmf_cfg80211_vif *vif;
 
     brcmf_dbg(TRACE, "enter\n");
 
     /* Set the discovery state to SCAN */
     vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
     (void)brcmf_p2p_set_discover_state(vif->ifp, WL_P2P_DISC_ST_SCAN, 0, 0);
 
     /* Disable P2P discovery in the firmware */
     vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif;
     (void)brcmf_fil_iovar_int_set(vif->ifp, "p2p_disc", 0);
 
     return 0;
 }
 
 /**
  * brcmf_p2p_enable_discovery() - initialize and configure discovery.
  *
  * @p2p: P2P specific data.
  *
  * Initializes the discovery device and configure the virtual interface.
  */
 static int brcmf_p2p_enable_discovery(struct brcmf_p2p_info *p2p)
 {
     struct brcmf_pub *drvr = p2p->cfg->pub;
     struct brcmf_cfg80211_vif *vif;
     s32 ret = 0;
 
     brcmf_dbg(TRACE, "enter\n");
     vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
     if (!vif) {
         bphy_err(drvr, "P2P config device not available\n");
         ret = -EPERM;
         goto exit;
     }
 
     if (test_bit(BRCMF_P2P_STATUS_ENABLED, &p2p->status)) {
         brcmf_dbg(INFO, "P2P config device already configured\n");
         goto exit;
     }
 
     /* Re-initialize P2P Discovery in the firmware */
     vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif;
     ret = brcmf_fil_iovar_int_set(vif->ifp, "p2p_disc", 1);
     if (ret < 0) {
         bphy_err(drvr, "set p2p_disc error\n");
         goto exit;
     }
     vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
     ret = brcmf_p2p_set_discover_state(vif->ifp, WL_P2P_DISC_ST_SCAN, 0, 0);
     if (ret < 0) {
         bphy_err(drvr, "unable to set WL_P2P_DISC_ST_SCAN\n");
         goto exit;
     }
 
     /*
      * Set wsec to any non-zero value in the discovery bsscfg
      * to ensure our P2P probe responses have the privacy bit
      * set in the 802.11 WPA IE. Some peer devices may not
      * initiate WPS with us if this bit is not set.
      */
     ret = brcmf_fil_bsscfg_int_set(vif->ifp, "wsec", AES_ENABLED);
     if (ret < 0) {
         bphy_err(drvr, "wsec error %d\n", ret);
         goto exit;
     }
 
     set_bit(BRCMF_P2P_STATUS_ENABLED, &p2p->status);
 exit:
     return ret;
 }
 
 /**
  * brcmf_p2p_escan() - initiate a P2P scan.
  *
  * @p2p: P2P specific data.
  * @num_chans: number of channels to scan.
  * @chanspecs: channel parameters for @num_chans channels.
  * @search_state: P2P discover state to use.
  * @bss_type: type of P2P bss.
  */
 static s32 brcmf_p2p_escan(struct brcmf_p2p_info *p2p, u32 num_chans,
                u16 chanspecs[], s32 search_state,
                enum p2p_bss_type bss_type)
 {
     struct brcmf_pub *drvr = p2p->cfg->pub;
     s32 ret = 0;
     s32 memsize = offsetof(struct brcmf_p2p_scan_le,
                    eparams.params_le.channel_list);
     s32 nprobes;
     s32 active;
     u32 i;
     u8 *memblk;
     struct brcmf_cfg80211_vif *vif;
     struct brcmf_p2p_scan_le *p2p_params;
     struct brcmf_scan_params_le *sparams;
 
     memsize += num_chans * sizeof(__le16);
     memblk = kzalloc(memsize, GFP_KERNEL);
     if (!memblk)
         return -ENOMEM;
 
     vif = p2p->bss_idx[bss_type].vif;
     if (vif == NULL) {
         bphy_err(drvr, "no vif for bss type %d\n", bss_type);
         ret = -EINVAL;
         goto exit;
     }
     p2p_params = (struct brcmf_p2p_scan_le *)memblk;
     sparams = &p2p_params->eparams.params_le;
 
     switch (search_state) {
     case WL_P2P_DISC_ST_SEARCH:
         /*
          * If we in SEARCH STATE, we don't need to set SSID explictly
          * because dongle use P2P WILDCARD internally by default, use
          * null ssid, which it is already due to kzalloc.
          */
         break;
     case WL_P2P_DISC_ST_SCAN:
         /*
          * wpa_supplicant has p2p_find command with type social or
          * progressive. For progressive, we need to set the ssid to
          * P2P WILDCARD because we just do broadcast scan unless
          * setting SSID.
          */
         sparams->ssid_le.SSID_len =
                 cpu_to_le32(BRCMF_P2P_WILDCARD_SSID_LEN);
         memcpy(sparams->ssid_le.SSID, BRCMF_P2P_WILDCARD_SSID,
                BRCMF_P2P_WILDCARD_SSID_LEN);
         break;
     default:
         bphy_err(drvr, " invalid search state %d\n", search_state);
         ret = -EINVAL;
         goto exit;
     }
 
     brcmf_p2p_set_discover_state(vif->ifp, search_state, 0, 0);
 
     /*
      * set p2p scan parameters.
      */
     p2p_params->type = 'E';
 
     /* determine the scan engine parameters */
     sparams->bss_type = DOT11_BSSTYPE_ANY;
     sparams->scan_type = BRCMF_SCANTYPE_ACTIVE;
 
     eth_broadcast_addr(sparams->bssid);
     sparams->home_time = cpu_to_le32(P2PAPI_SCAN_HOME_TIME_MS);
 
     /*
      * SOCIAL_CHAN_CNT + 1 takes care of the Progressive scan
      * supported by the supplicant.
      */
     if (num_chans == SOCIAL_CHAN_CNT || num_chans == (SOCIAL_CHAN_CNT + 1))
         active = P2PAPI_SCAN_SOCIAL_DWELL_TIME_MS;
     else if (num_chans == AF_PEER_SEARCH_CNT)
         active = P2PAPI_SCAN_AF_SEARCH_DWELL_TIME_MS;
     else if (brcmf_get_vif_state_any(p2p->cfg, BRCMF_VIF_STATUS_CONNECTED))
         active = -1;
     else
         active = P2PAPI_SCAN_DWELL_TIME_MS;
 
     /* Override scan params to find a peer for a connection */
     if (num_chans == 1) {
         active = WL_SCAN_CONNECT_DWELL_TIME_MS;
         /* WAR to sync with presence period of VSDB GO.
          * send probe request more frequently
          */
         nprobes = active / WL_SCAN_JOIN_PROBE_INTERVAL_MS;
     } else {
         nprobes = active / P2PAPI_SCAN_NPROBS_TIME_MS;
     }
 
     if (nprobes <= 0)
         nprobes = 1;
 
     brcmf_dbg(INFO, "nprobes # %d, active_time %d\n", nprobes, active);
     sparams->active_time = cpu_to_le32(active);
     sparams->nprobes = cpu_to_le32(nprobes);
     sparams->passive_time = cpu_to_le32(-1);
     sparams->channel_num = cpu_to_le32(num_chans &
                        BRCMF_SCAN_PARAMS_COUNT_MASK);
     for (i = 0; i < num_chans; i++)
         sparams->channel_list[i] = cpu_to_le16(chanspecs[i]);
 
     /* set the escan specific parameters */
     p2p_params->eparams.version = cpu_to_le32(BRCMF_ESCAN_REQ_VERSION);
     p2p_params->eparams.action =  cpu_to_le16(WL_ESCAN_ACTION_START);
     p2p_params->eparams.sync_id = cpu_to_le16(0x1234);
     /* perform p2p scan on primary device */
     ret = brcmf_fil_bsscfg_data_set(vif->ifp, "p2p_scan", memblk, memsize);
     if (!ret)
         set_bit(BRCMF_SCAN_STATUS_BUSY, &p2p->cfg->scan_status);
 exit:
     kfree(memblk);
     return ret;
 }
 
 /**
  * brcmf_p2p_run_escan() - escan callback for peer-to-peer.
  *
  * @cfg: driver private data for cfg80211 interface.
  * @ifp: interface control.
  * @request: scan request from cfg80211.
  *
  * Determines the P2P discovery state based to scan request parameters and
  * validates the channels in the request.
  */
 static s32 brcmf_p2p_run_escan(struct brcmf_cfg80211_info *cfg,
                    struct brcmf_if *ifp,
                    struct cfg80211_scan_request *request)
 {
     struct brcmf_p2p_info *p2p = &cfg->p2p;
     struct brcmf_pub *drvr = cfg->pub;
     s32 err = 0;
     s32 search_state = WL_P2P_DISC_ST_SCAN;
     struct brcmf_cfg80211_vif *vif;
     struct net_device *dev = NULL;
     int i, num_nodfs = 0;
     u16 *chanspecs;
 
     brcmf_dbg(TRACE, "enter\n");
 
     if (!request) {
         err = -EINVAL;
         goto exit;
     }
 
     if (request->n_channels) {
         chanspecs = kcalloc(request->n_channels, sizeof(*chanspecs),
                     GFP_KERNEL);
         if (!chanspecs) {
             err = -ENOMEM;
             goto exit;
         }
         vif = p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif;
         if (vif)
             dev = vif->wdev.netdev;
         if (request->n_channels == 3 &&
             request->channels[0]->hw_value == SOCIAL_CHAN_1 &&
             request->channels[1]->hw_value == SOCIAL_CHAN_2 &&
             request->channels[2]->hw_value == SOCIAL_CHAN_3) {
             /* SOCIAL CHANNELS 1, 6, 11 */
             search_state = WL_P2P_DISC_ST_SEARCH;
             brcmf_dbg(INFO, "P2P SEARCH PHASE START\n");
         } else if (dev != NULL &&
                vif->wdev.iftype == NL80211_IFTYPE_P2P_GO) {
             /* If you are already a GO, then do SEARCH only */
             brcmf_dbg(INFO, "Already a GO. Do SEARCH Only\n");
             search_state = WL_P2P_DISC_ST_SEARCH;
         } else {
             brcmf_dbg(INFO, "P2P SCAN STATE START\n");
         }
 
         /*
          * no P2P scanning on passive or DFS channels.
          */
         for (i = 0; i < request->n_channels; i++) {
             struct ieee80211_channel *chan = request->channels[i];
 
             if (chan->flags & (IEEE80211_CHAN_RADAR |
                        IEEE80211_CHAN_NO_IR))
                 continue;
 
             chanspecs[i] = channel_to_chanspec(&p2p->cfg->d11inf,
                                chan);
             brcmf_dbg(INFO, "%d: chan=%d, channel spec=%x\n",
                   num_nodfs, chan->hw_value, chanspecs[i]);
             num_nodfs++;
         }
         err = brcmf_p2p_escan(p2p, num_nodfs, chanspecs, search_state,
                       P2PAPI_BSSCFG_DEVICE);
         kfree(chanspecs);
     }
 exit:
     if (err)
         bphy_err(drvr, "error (%d)\n", err);
     return err;
 }
 
 
 /**
  * brcmf_p2p_find_listen_channel() - find listen channel in ie string.
  *
  * @ie: string of information elements.
  * @ie_len: length of string.
  *
  * Scan ie for p2p ie and look for attribute 6 channel. If available determine
  * channel and return it.
  */
 static s32 brcmf_p2p_find_listen_channel(const u8 *ie, u32 ie_len)
 {
     u8 channel_ie[5];
     s32 listen_channel;
     s32 err;
 
     err = cfg80211_get_p2p_attr(ie, ie_len,
                     IEEE80211_P2P_ATTR_LISTEN_CHANNEL,
                     channel_ie, sizeof(channel_ie));
     if (err < 0)
         return err;
 
     /* listen channel subel length format:     */
     /* 3(country) + 1(op. class) + 1(chan num) */
     listen_channel = (s32)channel_ie[3 + 1];
 
     if (listen_channel == SOCIAL_CHAN_1 ||
         listen_channel == SOCIAL_CHAN_2 ||
         listen_channel == SOCIAL_CHAN_3) {
         brcmf_dbg(INFO, "Found my Listen Channel %d\n", listen_channel);
         return listen_channel;
     }
 
     return -EPERM;
 }
 
 
 /**
  * brcmf_p2p_scan_prep() - prepare scan based on request.
  *
  * @wiphy: wiphy device.
  * @request: scan request from cfg80211.
  * @vif: vif on which scan request is to be executed.
  *
  * Prepare the scan appropriately for type of scan requested. Overrides the
  * escan .run() callback for peer-to-peer scanning.
  */
 int brcmf_p2p_scan_prep(struct wiphy *wiphy,
             struct cfg80211_scan_request *request,
             struct brcmf_cfg80211_vif *vif)
 {
     struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
     struct brcmf_p2p_info *p2p = &cfg->p2p;
     int err;
 
     if (brcmf_p2p_scan_is_p2p_request(request)) {
         /* find my listen channel */
         err = brcmf_p2p_find_listen_channel(request->ie,
                             request->ie_len);
         if (err < 0)
             return err;
 
         p2p->afx_hdl.my_listen_chan = err;
 
         clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);
         brcmf_dbg(INFO, "P2P: GO_NEG_PHASE status cleared\n");
 
         err = brcmf_p2p_enable_discovery(p2p);
         if (err)
             return err;
 
         /* override .run_escan() callback. */
         cfg->escan_info.run = brcmf_p2p_run_escan;
     }
     return 0;
 }
 
 
 /**
  * brcmf_p2p_discover_listen() - set firmware to discover listen state.
  *
  * @p2p: p2p device.
  * @channel: channel nr for discover listen.
  * @duration: time in ms to stay on channel.
  *
  */
 static s32
 brcmf_p2p_discover_listen(struct brcmf_p2p_info *p2p, u16 channel, u32 duration)
 {
     struct brcmf_pub *drvr = p2p->cfg->pub;
     struct brcmf_cfg80211_vif *vif;
     struct brcmu_chan ch;
     s32 err = 0;
 
     vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
     if (!vif) {
         bphy_err(drvr, "Discovery is not set, so we have nothing to do\n");
         err = -EPERM;
         goto exit;
     }
 
     if (test_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN, &p2p->status)) {
         bphy_err(drvr, "Previous LISTEN is not completed yet\n");
         /* WAR: prevent cookie mismatch in wpa_supplicant return OK */
         goto exit;
     }
 
     ch.chnum = channel;
     ch.bw = BRCMU_CHAN_BW_20;
     p2p->cfg->d11inf.encchspec(&ch);
     err = brcmf_p2p_set_discover_state(vif->ifp, WL_P2P_DISC_ST_LISTEN,
                        ch.chspec, (u16)duration);
     if (!err) {
         set_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN, &p2p->status);
         p2p->remain_on_channel_cookie++;
     }
 exit:
     return err;
 }
 
 
 /**
  * brcmf_p2p_remain_on_channel() - put device on channel and stay there.
  *
  * @wiphy: wiphy device.
  * @wdev: wireless device.
  * @channel: channel to stay on.
  * @duration: time in ms to remain on channel.
  * @cookie: cookie.
  */
 int brcmf_p2p_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
                 struct ieee80211_channel *channel,
                 unsigned int duration, u64 *cookie)
 {
     struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
     struct brcmf_p2p_info *p2p = &cfg->p2p;
     s32 err;
     u16 channel_nr;
 
     channel_nr = ieee80211_frequency_to_channel(channel->center_freq);
     brcmf_dbg(TRACE, "Enter, channel: %d, duration ms (%d)\n", channel_nr,
           duration);
 
     err = brcmf_p2p_enable_discovery(p2p);
     if (err)
         goto exit;
     err = brcmf_p2p_discover_listen(p2p, channel_nr, duration);
     if (err)
         goto exit;
 
     memcpy(&p2p->remain_on_channel, channel, sizeof(*channel));
     *cookie = p2p->remain_on_channel_cookie;
     cfg80211_ready_on_channel(wdev, *cookie, channel, duration, GFP_KERNEL);
 
 exit:
     return err;
 }
 
 
 /**
  * brcmf_p2p_notify_listen_complete() - p2p listen has completed.
  *
  * @ifp: interfac control.
  * @e: event message. Not used, to make it usable for fweh event dispatcher.
  * @data: payload of message. Not used.
  *
  */
 int brcmf_p2p_notify_listen_complete(struct brcmf_if *ifp,
                      const struct brcmf_event_msg *e,
                      void *data)
 {
     struct brcmf_cfg80211_info *cfg = ifp->drvr->config;
     struct brcmf_p2p_info *p2p = &cfg->p2p;
 
     brcmf_dbg(TRACE, "Enter\n");
     if (test_and_clear_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN,
                    &p2p->status)) {
         if (test_and_clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN,
                        &p2p->status)) {
             clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME,
                   &p2p->status);
             brcmf_dbg(INFO, "Listen DONE, wake up wait_next_af\n");
             complete(&p2p->wait_next_af);
         }
 
         cfg80211_remain_on_channel_expired(&ifp->vif->wdev,
                            p2p->remain_on_channel_cookie,
                            &p2p->remain_on_channel,
                            GFP_KERNEL);
     }
     return 0;
 }
 
 
 /**
  * brcmf_p2p_cancel_remain_on_channel() - cancel p2p listen state.
  *
  * @ifp: interfac control.
  *
  */
 void brcmf_p2p_cancel_remain_on_channel(struct brcmf_if *ifp)
 {
     if (!ifp)
         return;
     brcmf_p2p_set_discover_state(ifp, WL_P2P_DISC_ST_SCAN, 0, 0);
     brcmf_p2p_notify_listen_complete(ifp, NULL, NULL);
 }
 
 
 /**
  * brcmf_p2p_act_frm_search() - search function for action frame.
  *
  * @p2p: p2p device.
  * @channel: channel on which action frame is to be trasmitted.
  *
  * search function to reach at common channel to send action frame. When
  * channel is 0 then all social channels will be used to send af
  */
 static s32 brcmf_p2p_act_frm_search(struct brcmf_p2p_info *p2p, u16 channel)
 {
     struct brcmf_pub *drvr = p2p->cfg->pub;
     s32 err;
     u32 channel_cnt;
     u16 *default_chan_list;
     u32 i;
     struct brcmu_chan ch;
 
     brcmf_dbg(TRACE, "Enter\n");
 
     if (channel)
         channel_cnt = AF_PEER_SEARCH_CNT;
     else
         channel_cnt = SOCIAL_CHAN_CNT;
     default_chan_list = kcalloc(channel_cnt, sizeof(*default_chan_list),
                     GFP_KERNEL);
     if (default_chan_list == NULL) {
         bphy_err(drvr, "channel list allocation failed\n");
         err = -ENOMEM;
         goto exit;
     }
     ch.bw = BRCMU_CHAN_BW_20;
     if (channel) {
         ch.chnum = channel;
         p2p->cfg->d11inf.encchspec(&ch);
         /* insert same channel to the chan_list */
         for (i = 0; i < channel_cnt; i++)
             default_chan_list[i] = ch.chspec;
     } else {
         ch.chnum = SOCIAL_CHAN_1;
         p2p->cfg->d11inf.encchspec(&ch);
         default_chan_list[0] = ch.chspec;
         ch.chnum = SOCIAL_CHAN_2;
         p2p->cfg->d11inf.encchspec(&ch);
         default_chan_list[1] = ch.chspec;
         ch.chnum = SOCIAL_CHAN_3;
         p2p->cfg->d11inf.encchspec(&ch);
         default_chan_list[2] = ch.chspec;
     }
     err = brcmf_p2p_escan(p2p, channel_cnt, default_chan_list,
                   WL_P2P_DISC_ST_SEARCH, P2PAPI_BSSCFG_DEVICE);
     kfree(default_chan_list);
 exit:
     return err;
 }
 
 
 /**
  * brcmf_p2p_afx_handler() - afx worker thread.
  *
  * @work:
  *
  */
 static void brcmf_p2p_afx_handler(struct work_struct *work)
 {
     struct afx_hdl *afx_hdl = container_of(work, struct afx_hdl, afx_work);
     struct brcmf_p2p_info *p2p = container_of(afx_hdl,
                           struct brcmf_p2p_info,
                           afx_hdl);
     struct brcmf_pub *drvr = p2p->cfg->pub;
     s32 err;
 
     if (!afx_hdl->is_active)
         return;
 
     if (afx_hdl->is_listen && afx_hdl->my_listen_chan)
         /* 100ms ~ 300ms */
         err = brcmf_p2p_discover_listen(p2p, afx_hdl->my_listen_chan,
                         100 * (1 + prandom_u32() % 3));
     else
         err = brcmf_p2p_act_frm_search(p2p, afx_hdl->peer_listen_chan);
 
     if (err) {
         bphy_err(drvr, "ERROR occurred! value is (%d)\n", err);
         if (test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL,
                  &p2p->status))
             complete(&afx_hdl->act_frm_scan);
     }
 }
 
 
 /**
  * brcmf_p2p_af_searching_channel() - search channel.
  *
  * @p2p: p2p device info struct.
  *
  */
 static s32 brcmf_p2p_af_searching_channel(struct brcmf_p2p_info *p2p)
 {
     struct afx_hdl *afx_hdl = &p2p->afx_hdl;
     struct brcmf_cfg80211_vif *pri_vif;
     s32 retry;
 
     brcmf_dbg(TRACE, "Enter\n");
 
     pri_vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif;
 
     reinit_completion(&afx_hdl->act_frm_scan);
     set_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status);
     afx_hdl->is_active = true;
     afx_hdl->peer_chan = P2P_INVALID_CHANNEL;
 
     /* Loop to wait until we find a peer's channel or the
      * pending action frame tx is cancelled.
      */
     retry = 0;
     while ((retry < P2P_CHANNEL_SYNC_RETRY) &&
            (afx_hdl->peer_chan == P2P_INVALID_CHANNEL)) {
         afx_hdl->is_listen = false;
         brcmf_dbg(TRACE, "Scheduling action frame for sending.. (%d)\n",
               retry);
         /* search peer on peer's listen channel */
         schedule_work(&afx_hdl->afx_work);
         wait_for_completion_timeout(&afx_hdl->act_frm_scan,
                         P2P_AF_FRM_SCAN_MAX_WAIT);
         if ((afx_hdl->peer_chan != P2P_INVALID_CHANNEL) ||
             (!test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL,
                    &p2p->status)))
             break;
 
         if (afx_hdl->my_listen_chan) {
             brcmf_dbg(TRACE, "Scheduling listen peer, channel=%d\n",
                   afx_hdl->my_listen_chan);
             /* listen on my listen channel */
             afx_hdl->is_listen = true;
             schedule_work(&afx_hdl->afx_work);
             wait_for_completion_timeout(&afx_hdl->act_frm_scan,
                             P2P_AF_FRM_SCAN_MAX_WAIT);
         }
         if ((afx_hdl->peer_chan != P2P_INVALID_CHANNEL) ||
             (!test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL,
                    &p2p->status)))
             break;
         retry++;
 
         /* if sta is connected or connecting, sleep for a while before
          * retry af tx or finding a peer
          */
         if (test_bit(BRCMF_VIF_STATUS_CONNECTED, &pri_vif->sme_state) ||
             test_bit(BRCMF_VIF_STATUS_CONNECTING, &pri_vif->sme_state))
             msleep(P2P_DEFAULT_SLEEP_TIME_VSDB);
     }
 
     brcmf_dbg(TRACE, "Completed search/listen peer_chan=%d\n",
           afx_hdl->peer_chan);
     afx_hdl->is_active = false;
 
     clear_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status);
 
     return afx_hdl->peer_chan;
 }
 
 
 /**
  * brcmf_p2p_scan_finding_common_channel() - was escan used for finding channel
  *
  * @cfg: common configuration struct.
  * @bi: bss info struct, result from scan.
  *
  */
 bool brcmf_p2p_scan_finding_common_channel(struct brcmf_cfg80211_info *cfg,
                        struct brcmf_bss_info_le *bi)
 
 {
     struct brcmf_p2p_info *p2p = &cfg->p2p;
     struct afx_hdl *afx_hdl = &p2p->afx_hdl;
     struct brcmu_chan ch;
     u8 *ie;
     s32 err;
     u8 p2p_dev_addr[ETH_ALEN];
 
     if (!test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status))
         return false;
 
     if (bi == NULL) {
         brcmf_dbg(TRACE, "ACTION FRAME SCAN Done\n");
         if (afx_hdl->peer_chan == P2P_INVALID_CHANNEL)
             complete(&afx_hdl->act_frm_scan);
         return true;
     }
 
     ie = ((u8 *)bi) + le16_to_cpu(bi->ie_offset);
     memset(p2p_dev_addr, 0, sizeof(p2p_dev_addr));
     err = cfg80211_get_p2p_attr(ie, le32_to_cpu(bi->ie_length),
                     IEEE80211_P2P_ATTR_DEVICE_INFO,
                     p2p_dev_addr, sizeof(p2p_dev_addr));
     if (err < 0)
         err = cfg80211_get_p2p_attr(ie, le32_to_cpu(bi->ie_length),
                         IEEE80211_P2P_ATTR_DEVICE_ID,
                         p2p_dev_addr, sizeof(p2p_dev_addr));
     if ((err >= 0) &&
         (ether_addr_equal(p2p_dev_addr, afx_hdl->tx_dst_addr))) {
         if (!bi->ctl_ch) {
             ch.chspec = le16_to_cpu(bi->chanspec);
             cfg->d11inf.decchspec(&ch);
             bi->ctl_ch = ch.control_ch_num;
         }
         afx_hdl->peer_chan = bi->ctl_ch;
         brcmf_dbg(TRACE, "ACTION FRAME SCAN : Peer %pM found, channel : %d\n",
               afx_hdl->tx_dst_addr, afx_hdl->peer_chan);
         complete(&afx_hdl->act_frm_scan);
     }
     return true;
 }
 
 /**
  * brcmf_p2p_abort_action_frame() - abort action frame.
  *
  * @cfg: common configuration struct.
  *
  */
 static s32 brcmf_p2p_abort_action_frame(struct brcmf_cfg80211_info *cfg)
 {
     struct brcmf_p2p_info *p2p = &cfg->p2p;
     struct brcmf_cfg80211_vif *vif;
     s32 err;
     s32 int_val = 1;
 
     brcmf_dbg(TRACE, "Enter\n");
 
     vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
     err = brcmf_fil_bsscfg_data_set(vif->ifp, "actframe_abort", &int_val,
                     sizeof(s32));
     if (err)
         brcmf_err(" aborting action frame has failed (%d)\n", err);
 
     return err;
 }
 
 /**
  * brcmf_p2p_stop_wait_next_action_frame() - finish scan if af tx complete.
  *
  * @cfg: common configuration struct.
  *
  */
 static void
 brcmf_p2p_stop_wait_next_action_frame(struct brcmf_cfg80211_info *cfg)
 {
     struct brcmf_p2p_info *p2p = &cfg->p2p;
     struct brcmf_if *ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp;
     s32 err;
 
     if (test_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status) &&
         (test_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status) ||
          test_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status))) {
         brcmf_dbg(TRACE, "*** Wake UP ** abort actframe iovar\n");
         /* if channel is not zero, "actfame" uses off channel scan.
          * So abort scan for off channel completion.
          */
         if (p2p->af_sent_channel) {
             /* abort actframe using actframe_abort or abort scan */
             err = brcmf_p2p_abort_action_frame(cfg);
             if (err)
                 brcmf_notify_escan_complete(cfg, ifp, true,
                                 true);
         }
     } else if (test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN,
                 &p2p->status)) {
         brcmf_dbg(TRACE, "*** Wake UP ** abort listen for next af frame\n");
         /* So abort scan to cancel listen */
         brcmf_notify_escan_complete(cfg, ifp, true, true);
     }
 }
 
 
 /**
  * brcmf_p2p_gon_req_collision() - Check if go negotiaton collission
  *
  * @p2p: p2p device info struct.
  * @mac: MAC address.
  *
  * return true if recevied action frame is to be dropped.
  */
 static bool
 brcmf_p2p_gon_req_collision(struct brcmf_p2p_info *p2p, u8 *mac)
 {
     struct brcmf_cfg80211_info *cfg = p2p->cfg;
     struct brcmf_if *ifp;
 
     brcmf_dbg(TRACE, "Enter\n");
 
     if (!test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status) ||
         !p2p->gon_req_action)
         return false;
 
     brcmf_dbg(TRACE, "GO Negotiation Request COLLISION !!!\n");
     /* if sa(peer) addr is less than da(my) addr, then this device
      * process peer's gon request and block to send gon req.
      * if not (sa addr > da addr),
      * this device will process gon request and drop gon req of peer.
      */
     ifp = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif->ifp;
     if (memcmp(mac, ifp->mac_addr, ETH_ALEN) < 0) {
         brcmf_dbg(INFO, "Block transmit gon req !!!\n");
         p2p->block_gon_req_tx = true;
         /* if we are finding a common channel for sending af,
          * do not scan more to block to send current gon req
          */
         if (test_and_clear_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL,
                        &p2p->status))
             complete(&p2p->afx_hdl.act_frm_scan);
         if (test_and_clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME,
                        &p2p->status))
             brcmf_p2p_stop_wait_next_action_frame(cfg);
         return false;
     }
 
     /* drop gon request of peer to process gon request by this device. */
     brcmf_dbg(INFO, "Drop received gon req !!!\n");
 
     return true;
 }
 
 
 /**
  * brcmf_p2p_notify_action_frame_rx() - received action frame.
  *
  * @ifp: interfac control.
  * @e: event message. Not used, to make it usable for fweh event dispatcher.
  * @data: payload of message, containing action frame data.
  *
  */
 int brcmf_p2p_notify_action_frame_rx(struct brcmf_if *ifp,
                      const struct brcmf_event_msg *e,
                      void *data)
 {
     struct brcmf_pub *drvr = ifp->drvr;
     struct brcmf_cfg80211_info *cfg = drvr->config;
     struct brcmf_p2p_info *p2p = &cfg->p2p;
     struct afx_hdl *afx_hdl = &p2p->afx_hdl;
     struct wireless_dev *wdev;
     u32 mgmt_frame_len = e->datalen - sizeof(struct brcmf_rx_mgmt_data);
     struct brcmf_rx_mgmt_data *rxframe = (struct brcmf_rx_mgmt_data *)data;
     u8 *frame = (u8 *)(rxframe + 1);
     struct brcmf_p2p_pub_act_frame *act_frm;
     struct brcmf_p2psd_gas_pub_act_frame *sd_act_frm;
     struct brcmu_chan ch;
     struct ieee80211_mgmt *mgmt_frame;
     s32 freq;
     u16 mgmt_type;
     u8 action;
 
     if (e->datalen < sizeof(*rxframe)) {
         brcmf_dbg(SCAN, "Event data to small. Ignore\n");
         return 0;
     }
 
     ch.chspec = be16_to_cpu(rxframe->chanspec);
     cfg->d11inf.decchspec(&ch);
     /* Check if wpa_supplicant has registered for this frame */
     brcmf_dbg(INFO, "ifp->vif->mgmt_rx_reg %04x\n", ifp->vif->mgmt_rx_reg);
     mgmt_type = (IEEE80211_STYPE_ACTION & IEEE80211_FCTL_STYPE) >> 4;
     if ((ifp->vif->mgmt_rx_reg & BIT(mgmt_type)) == 0)
         return 0;
 
     brcmf_p2p_print_actframe(false, frame, mgmt_frame_len);
 
     action = P2P_PAF_SUBTYPE_INVALID;
     if (brcmf_p2p_is_pub_action(frame, mgmt_frame_len)) {
         act_frm = (struct brcmf_p2p_pub_act_frame *)frame;
         action = act_frm->subtype;
         if ((action == P2P_PAF_GON_REQ) &&
             (brcmf_p2p_gon_req_collision(p2p, (u8 *)e->addr))) {
             if (test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL,
                      &p2p->status) &&
                 (ether_addr_equal(afx_hdl->tx_dst_addr, e->addr))) {
                 afx_hdl->peer_chan = ch.control_ch_num;
                 brcmf_dbg(INFO, "GON request: Peer found, channel=%d\n",
                       afx_hdl->peer_chan);
                 complete(&afx_hdl->act_frm_scan);
             }
             return 0;
         }
         /* After complete GO Negotiation, roll back to mpc mode */
         if ((action == P2P_PAF_GON_CONF) ||
             (action == P2P_PAF_PROVDIS_RSP))
             brcmf_set_mpc(ifp, 1);
         if (action == P2P_PAF_GON_CONF) {
             brcmf_dbg(TRACE, "P2P: GO_NEG_PHASE status cleared\n");
             clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);
         }
     } else if (brcmf_p2p_is_gas_action(frame, mgmt_frame_len)) {
         sd_act_frm = (struct brcmf_p2psd_gas_pub_act_frame *)frame;
         action = sd_act_frm->action;
     }
 
     if (test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status) &&
         (p2p->next_af_subtype == action)) {
         brcmf_dbg(TRACE, "We got a right next frame! (%d)\n", action);
         clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME,
               &p2p->status);
         /* Stop waiting for next AF. */
         brcmf_p2p_stop_wait_next_action_frame(cfg);
     }
 
     mgmt_frame = kzalloc(offsetof(struct ieee80211_mgmt, u) +
                  mgmt_frame_len, GFP_KERNEL);
     if (!mgmt_frame) {
         bphy_err(drvr, "No memory available for action frame\n");
         return -ENOMEM;
     }
     memcpy(mgmt_frame->da, ifp->mac_addr, ETH_ALEN);
     brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_BSSID, mgmt_frame->bssid,
                    ETH_ALEN);
     memcpy(mgmt_frame->sa, e->addr, ETH_ALEN);
     mgmt_frame->frame_control = cpu_to_le16(IEEE80211_STYPE_ACTION);
     memcpy(&mgmt_frame->u, frame, mgmt_frame_len);
     mgmt_frame_len += offsetof(struct ieee80211_mgmt, u);
 
     freq = ieee80211_channel_to_frequency(ch.control_ch_num,
                           ch.band == BRCMU_CHAN_BAND_2G ?
                           NL80211_BAND_2GHZ :
                           NL80211_BAND_5GHZ);
 
     wdev = &ifp->vif->wdev;
     cfg80211_rx_mgmt(wdev, freq, 0, (u8 *)mgmt_frame, mgmt_frame_len, 0);
 
     kfree(mgmt_frame);
     return 0;
 }
 
 
 /**
  * brcmf_p2p_notify_action_tx_complete() - transmit action frame complete
  *
  * @ifp: interfac control.
  * @e: event message. Not used, to make it usable for fweh event dispatcher.
  * @data: not used.
  *
  */
 int brcmf_p2p_notify_action_tx_complete(struct brcmf_if *ifp,
                     const struct brcmf_event_msg *e,
                     void *data)
 {
     struct brcmf_cfg80211_info *cfg = ifp->drvr->config;
     struct brcmf_p2p_info *p2p = &cfg->p2p;
 
     brcmf_dbg(INFO, "Enter: event %s, status=%d\n",
           e->event_code == BRCMF_E_ACTION_FRAME_OFF_CHAN_COMPLETE ?
           "ACTION_FRAME_OFF_CHAN_COMPLETE" : "ACTION_FRAME_COMPLETE",
           e->status);
 
     if (!test_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status))
         return 0;
 
     if (e->event_code == BRCMF_E_ACTION_FRAME_COMPLETE) {
         if (e->status == BRCMF_E_STATUS_SUCCESS) {
             set_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED,
                 &p2p->status);
             if (!p2p->wait_for_offchan_complete)
                 complete(&p2p->send_af_done);
         } else {
             set_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status);
             /* If there is no ack, we don't need to wait for
              * WLC_E_ACTION_FRAME_OFFCHAN_COMPLETE event
              */
             brcmf_p2p_stop_wait_next_action_frame(cfg);
         }
 
     } else {
         complete(&p2p->send_af_done);
     }
     return 0;
 }
 
 
 /**
  * brcmf_p2p_tx_action_frame() - send action frame over fil.
  *
  * @p2p: p2p info struct for vif.
  * @af_params: action frame data/info.
  *
  * Send an action frame immediately without doing channel synchronization.
  *
  * This function waits for a completion event before returning.
  * The WLC_E_ACTION_FRAME_COMPLETE event will be received when the action
  * frame is transmitted.
  */
 static s32 brcmf_p2p_tx_action_frame(struct brcmf_p2p_info *p2p,
                      struct brcmf_fil_af_params_le *af_params)
 {
     struct brcmf_pub *drvr = p2p->cfg->pub;
     struct brcmf_cfg80211_vif *vif;
     struct brcmf_p2p_action_frame *p2p_af;
     s32 err = 0;
 
     brcmf_dbg(TRACE, "Enter\n");
 
     reinit_completion(&p2p->send_af_done);
     clear_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status);
     clear_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status);
 
     /* check if it is a p2p_presence response */
     p2p_af = (struct brcmf_p2p_action_frame *)af_params->action_frame.data;
     if (p2p_af->subtype == P2P_AF_PRESENCE_RSP)
         vif = p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif;
     else
         vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
 
     err = brcmf_fil_bsscfg_data_set(vif->ifp, "actframe", af_params,
                     sizeof(*af_params));
     if (err) {
         bphy_err(drvr, " sending action frame has failed\n");
         goto exit;
     }
 
     p2p->af_sent_channel = le32_to_cpu(af_params->channel);
     p2p->af_tx_sent_jiffies = jiffies;
 
     if (test_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN, &p2p->status) &&
         p2p->af_sent_channel ==
         ieee80211_frequency_to_channel(p2p->remain_on_channel.center_freq))
         p2p->wait_for_offchan_complete = false;
     else
         p2p->wait_for_offchan_complete = true;
 
     brcmf_dbg(TRACE, "Waiting for %s tx completion event\n",
           (p2p->wait_for_offchan_complete) ?
            "off-channel" : "on-channel");
 
     wait_for_completion_timeout(&p2p->send_af_done, P2P_AF_MAX_WAIT_TIME);
 
     if (test_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status)) {
         brcmf_dbg(TRACE, "TX action frame operation is success\n");
     } else {
         err = -EIO;
         brcmf_dbg(TRACE, "TX action frame operation has failed\n");
     }
     /* clear status bit for action tx */
     clear_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status);
     clear_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status);
 
 exit:
     return err;
 }
 
 
 /**
  * brcmf_p2p_pub_af_tx() - public action frame tx routine.
  *
  * @cfg: driver private data for cfg80211 interface.
  * @af_params: action frame data/info.
  * @config_af_params: configuration data for action frame.
  *
  * routine which transmits ation frame public type.
  */
 static s32 brcmf_p2p_pub_af_tx(struct brcmf_cfg80211_info *cfg,
                    struct brcmf_fil_af_params_le *af_params,
                    struct brcmf_config_af_params *config_af_params)
 {
     struct brcmf_p2p_info *p2p = &cfg->p2p;
     struct brcmf_pub *drvr = cfg->pub;
     struct brcmf_fil_action_frame_le *action_frame;
     struct brcmf_p2p_pub_act_frame *act_frm;
     s32 err = 0;
     u16 ie_len;
 
     action_frame = &af_params->action_frame;
     act_frm = (struct brcmf_p2p_pub_act_frame *)(action_frame->data);
 
     config_af_params->extra_listen = true;
 
     switch (act_frm->subtype) {
     case P2P_PAF_GON_REQ:
         brcmf_dbg(TRACE, "P2P: GO_NEG_PHASE status set\n");
         set_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);
         config_af_params->mpc_onoff = 0;
         config_af_params->search_channel = true;
         p2p->next_af_subtype = act_frm->subtype + 1;
         p2p->gon_req_action = true;
         /* increase dwell time to wait for RESP frame */
         af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME);
         break;
     case P2P_PAF_GON_RSP:
         p2p->next_af_subtype = act_frm->subtype + 1;
         /* increase dwell time to wait for CONF frame */
         af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME);
         break;
     case P2P_PAF_GON_CONF:
         /* If we reached till GO Neg confirmation reset the filter */
         brcmf_dbg(TRACE, "P2P: GO_NEG_PHASE status cleared\n");
         clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);
         /* turn on mpc again if go nego is done */
         config_af_params->mpc_onoff = 1;
         /* minimize dwell time */
         af_params->dwell_time = cpu_to_le32(P2P_AF_MIN_DWELL_TIME);
         config_af_params->extra_listen = false;
         break;
     case P2P_PAF_INVITE_REQ:
         config_af_params->search_channel = true;
         p2p->next_af_subtype = act_frm->subtype + 1;
         /* increase dwell time */
         af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME);
         break;
     case P2P_PAF_INVITE_RSP:
         /* minimize dwell time */
         af_params->dwell_time = cpu_to_le32(P2P_AF_MIN_DWELL_TIME);
         config_af_params->extra_listen = false;
         break;
     case P2P_PAF_DEVDIS_REQ:
         config_af_params->search_channel = true;
         p2p->next_af_subtype = act_frm->subtype + 1;
         /* maximize dwell time to wait for RESP frame */
         af_params->dwell_time = cpu_to_le32(P2P_AF_LONG_DWELL_TIME);
         break;
     case P2P_PAF_DEVDIS_RSP:
         /* minimize dwell time */
         af_params->dwell_time = cpu_to_le32(P2P_AF_MIN_DWELL_TIME);
         config_af_params->extra_listen = false;
         break;
     case P2P_PAF_PROVDIS_REQ:
         ie_len = le16_to_cpu(action_frame->len) -
              offsetof(struct brcmf_p2p_pub_act_frame, elts);
         if (cfg80211_get_p2p_attr(&act_frm->elts[0], ie_len,
                       IEEE80211_P2P_ATTR_GROUP_ID,
                       NULL, 0) < 0)
             config_af_params->search_channel = true;
         config_af_params->mpc_onoff = 0;
         p2p->next_af_subtype = act_frm->subtype + 1;
         /* increase dwell time to wait for RESP frame */
         af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME);
         break;
     case P2P_PAF_PROVDIS_RSP:
         /* wpa_supplicant send go nego req right after prov disc */
         p2p->next_af_subtype = P2P_PAF_GON_REQ;
         /* increase dwell time to MED level */
         af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME);
         config_af_params->extra_listen = false;
         break;
     default:
         bphy_err(drvr, "Unknown p2p pub act frame subtype: %d\n",
              act_frm->subtype);
         err = -EINVAL;
     }
     return err;
 }
 
 static bool brcmf_p2p_check_dwell_overflow(u32 requested_dwell,
                        unsigned long dwell_jiffies)
 {
     if ((requested_dwell & CUSTOM_RETRY_MASK) &&
         (jiffies_to_msecs(jiffies - dwell_jiffies) >
         (requested_dwell & ~CUSTOM_RETRY_MASK))) {
         brcmf_err("Action frame TX retry time over dwell time!\n");
         return true;
     }
     return false;
 }
 /**
  * brcmf_p2p_send_action_frame() - send action frame .
  *
  * @cfg: driver private data for cfg80211 interface.
  * @ndev: net device to transmit on.
  * @af_params: configuration data for action frame.
  */
 bool brcmf_p2p_send_action_frame(struct brcmf_cfg80211_info *cfg,
                  struct net_device *ndev,
                  struct brcmf_fil_af_params_le *af_params)
 {
     struct brcmf_p2p_info *p2p = &cfg->p2p;
     struct brcmf_if *ifp = netdev_priv(ndev);
     struct brcmf_fil_action_frame_le *action_frame;
     struct brcmf_config_af_params config_af_params;
     struct afx_hdl *afx_hdl = &p2p->afx_hdl;
     struct brcmf_pub *drvr = cfg->pub;
     u16 action_frame_len;
     bool ack = false;
     u8 category;
     u8 action;
     s32 tx_retry;
     s32 extra_listen_time;
     uint delta_ms;
     unsigned long dwell_jiffies = 0;
     bool dwell_overflow = false;
 
     u32 requested_dwell = le32_to_cpu(af_params->dwell_time);
     action_frame = &af_params->action_frame;
     action_frame_len = le16_to_cpu(action_frame->len);
 
     brcmf_p2p_print_actframe(true, action_frame->data, action_frame_len);
 
     /* Add the default dwell time. Dwell time to stay off-channel */
     /* to wait for a response action frame after transmitting an  */
     /* GO Negotiation action frame                                */
     af_params->dwell_time = cpu_to_le32(P2P_AF_DWELL_TIME);
 
     category = action_frame->data[DOT11_ACTION_CAT_OFF];
     action = action_frame->data[DOT11_ACTION_ACT_OFF];
 
     /* initialize variables */
     p2p->next_af_subtype = P2P_PAF_SUBTYPE_INVALID;
     p2p->gon_req_action = false;
 
     /* config parameters */
     config_af_params.mpc_onoff = -1;
     config_af_params.search_channel = false;
     config_af_params.extra_listen = false;
 
     if (brcmf_p2p_is_pub_action(action_frame->data, action_frame_len)) {
         /* p2p public action frame process */
         if (brcmf_p2p_pub_af_tx(cfg, af_params, &config_af_params)) {
             /* Just send unknown subtype frame with */
             /* default parameters.                  */
             bphy_err(drvr, "P2P Public action frame, unknown subtype.\n");
         }
     } else if (brcmf_p2p_is_gas_action(action_frame->data,
                        action_frame_len)) {
         /* service discovery process */
         if (action == P2PSD_ACTION_ID_GAS_IREQ ||
             action == P2PSD_ACTION_ID_GAS_CREQ) {
             /* configure service discovery query frame */
             config_af_params.search_channel = true;
 
             /* save next af suptype to cancel */
             /* remaining dwell time           */
             p2p->next_af_subtype = action + 1;
 
             af_params->dwell_time =
                 cpu_to_le32(P2P_AF_MED_DWELL_TIME);
         } else if (action == P2PSD_ACTION_ID_GAS_IRESP ||
                action == P2PSD_ACTION_ID_GAS_CRESP) {
             /* configure service discovery response frame */
             af_params->dwell_time =
                 cpu_to_le32(P2P_AF_MIN_DWELL_TIME);
         } else {
             bphy_err(drvr, "Unknown action type: %d\n", action);
             goto exit;
         }
     } else if (brcmf_p2p_is_p2p_action(action_frame->data,
                        action_frame_len)) {
         /* do not configure anything. it will be */
         /* sent with a default configuration     */
     } else {
         bphy_err(drvr, "Unknown Frame: category 0x%x, action 0x%x\n",
              category, action);
         return false;
     }
 
     /* if connecting on primary iface, sleep for a while before sending
      * af tx for VSDB
      */
     if (test_bit(BRCMF_VIF_STATUS_CONNECTING,
              &p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->sme_state))
         msleep(50);
 
     /* if scan is ongoing, abort current scan. */
     if (test_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status))
         brcmf_abort_scanning(cfg);
 
     memcpy(afx_hdl->tx_dst_addr, action_frame->da, ETH_ALEN);
 
     /* To make sure to send successfully action frame, turn off mpc */
     if (config_af_params.mpc_onoff == 0)
         brcmf_set_mpc(ifp, 0);
 
     /* set status and destination address before sending af */
     if (p2p->next_af_subtype != P2P_PAF_SUBTYPE_INVALID) {
         /* set status to cancel the remained dwell time in rx process */
         set_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status);
     }
 
     p2p->af_sent_channel = 0;
     set_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status);
     /* validate channel and p2p ies */
     if (config_af_params.search_channel &&
         IS_P2P_SOCIAL_CHANNEL(le32_to_cpu(af_params->channel)) &&
         p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif->saved_ie.probe_req_ie_len) {
         afx_hdl = &p2p->afx_hdl;
         afx_hdl->peer_listen_chan = le32_to_cpu(af_params->channel);
 
         if (brcmf_p2p_af_searching_channel(p2p) ==
                             P2P_INVALID_CHANNEL) {
             bphy_err(drvr, "Couldn't find peer's channel.\n");
             goto exit;
         }
 
         /* Abort scan even for VSDB scenarios. Scan gets aborted in
          * firmware but after the check of piggyback algorithm. To take
          * care of current piggback algo, lets abort the scan here
          * itself.
          */
         brcmf_notify_escan_complete(cfg, ifp, true, true);
 
         /* update channel */
         af_params->channel = cpu_to_le32(afx_hdl->peer_chan);
     }
     dwell_jiffies = jiffies;
     dwell_overflow = brcmf_p2p_check_dwell_overflow(requested_dwell,
                             dwell_jiffies);
 
     tx_retry = 0;
     while (!p2p->block_gon_req_tx &&
            (!ack) && (tx_retry < P2P_AF_TX_MAX_RETRY) &&
         !dwell_overflow) {
         if (af_params->channel)
             msleep(P2P_AF_RETRY_DELAY_TIME);
 
         ack = !brcmf_p2p_tx_action_frame(p2p, af_params);
         tx_retry++;
         dwell_overflow = brcmf_p2p_check_dwell_overflow(requested_dwell,
                                 dwell_jiffies);
     }
     if (!ack) {
         bphy_err(drvr, "Failed to send Action Frame(retry %d)\n",
              tx_retry);
         clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);
     }
 
 exit:
     clear_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status);
 
     /* WAR: sometimes dongle does not keep the dwell time of 'actframe'.
      * if we coundn't get the next action response frame and dongle does
      * not keep the dwell time, go to listen state again to get next action
      * response frame.
      */
     if (ack && config_af_params.extra_listen && !p2p->block_gon_req_tx &&
         test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status) &&
         p2p->af_sent_channel == afx_hdl->my_listen_chan) {
         delta_ms = jiffies_to_msecs(jiffies - p2p->af_tx_sent_jiffies);
         if (le32_to_cpu(af_params->dwell_time) > delta_ms)
             extra_listen_time = le32_to_cpu(af_params->dwell_time) -
                         delta_ms;
         else
             extra_listen_time = 0;
         if (extra_listen_time > 50) {
             set_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN,
                 &p2p->status);
             brcmf_dbg(INFO, "Wait more time! actual af time:%d, calculated extra listen:%d\n",
                   le32_to_cpu(af_params->dwell_time),
                   extra_listen_time);
             extra_listen_time += 100;
             if (!brcmf_p2p_discover_listen(p2p,
                                p2p->af_sent_channel,
                                extra_listen_time)) {
                 unsigned long duration;
 
                 extra_listen_time += 100;
                 duration = msecs_to_jiffies(extra_listen_time);
                 wait_for_completion_timeout(&p2p->wait_next_af,
                                 duration);
             }
             clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN,
                   &p2p->status);
         }
     }
 
     if (p2p->block_gon_req_tx) {
         /* if ack is true, supplicant will wait more time(100ms).
          * so we will return it as a success to get more time .
          */
         p2p->block_gon_req_tx = false;
         ack = true;
     }
 
     clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status);
     /* if all done, turn mpc on again */
     if (config_af_params.mpc_onoff == 1)
         brcmf_set_mpc(ifp, 1);
 
     return ack;
 }
 
 /**
  * brcmf_p2p_notify_rx_mgmt_p2p_probereq() - Event handler for p2p probe req.
  *
  * @ifp: interface pointer for which event was received.
  * @e: even message.
  * @data: payload of event message (probe request).
  */
 s32 brcmf_p2p_notify_rx_mgmt_p2p_probereq(struct brcmf_if *ifp,
                       const struct brcmf_event_msg *e,
                       void *data)
 {
     struct brcmf_cfg80211_info *cfg = ifp->drvr->config;
     struct brcmf_p2p_info *p2p = &cfg->p2p;
     struct afx_hdl *afx_hdl = &p2p->afx_hdl;
     struct brcmf_cfg80211_vif *vif = ifp->vif;
     struct brcmf_rx_mgmt_data *rxframe = (struct brcmf_rx_mgmt_data *)data;
     struct brcmu_chan ch;
     u8 *mgmt_frame;
     u32 mgmt_frame_len;
     s32 freq;
     u16 mgmt_type;
 
     brcmf_dbg(INFO, "Enter: event %d reason %d\n", e->event_code,
           e->reason);
 
     if (e->datalen < sizeof(*rxframe)) {
         brcmf_dbg(SCAN, "Event data to small. Ignore\n");
         return 0;
     }
 
     ch.chspec = be16_to_cpu(rxframe->chanspec);
     cfg->d11inf.decchspec(&ch);
 
     if (test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status) &&
         (ether_addr_equal(afx_hdl->tx_dst_addr, e->addr))) {
         afx_hdl->peer_chan = ch.control_ch_num;
         brcmf_dbg(INFO, "PROBE REQUEST: Peer found, channel=%d\n",
               afx_hdl->peer_chan);
         complete(&afx_hdl->act_frm_scan);
     }
 
     /* Firmware sends us two proberesponses for each idx one. At the */
     /* moment anything but bsscfgidx 0 is passed up to supplicant    */
     if (e->bsscfgidx == 0)
         return 0;
 
     /* Filter any P2P probe reqs arriving during the GO-NEG Phase */
     if (test_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status)) {
         brcmf_dbg(INFO, "Filtering P2P probe_req in GO-NEG phase\n");
         return 0;
     }
 
     /* Check if wpa_supplicant has registered for this frame */
     brcmf_dbg(INFO, "vif->mgmt_rx_reg %04x\n", vif->mgmt_rx_reg);
     mgmt_type = (IEEE80211_STYPE_PROBE_REQ & IEEE80211_FCTL_STYPE) >> 4;
     if ((vif->mgmt_rx_reg & BIT(mgmt_type)) == 0)
         return 0;
 
     mgmt_frame = (u8 *)(rxframe + 1);
     mgmt_frame_len = e->datalen - sizeof(*rxframe);
     freq = ieee80211_channel_to_frequency(ch.control_ch_num,
                           ch.band == BRCMU_CHAN_BAND_2G ?
                           NL80211_BAND_2GHZ :
                           NL80211_BAND_5GHZ);
 
     cfg80211_rx_mgmt(&vif->wdev, freq, 0, mgmt_frame, mgmt_frame_len, 0);
 
     brcmf_dbg(INFO, "mgmt_frame_len (%d) , e->datalen (%d), chanspec (%04x), freq (%d)\n",
           mgmt_frame_len, e->datalen, ch.chspec, freq);
 
     return 0;
 }
 
 
 /**
  * brcmf_p2p_get_current_chanspec() - Get current operation channel.
  *
  * @p2p: P2P specific data.
  * @chanspec: chanspec to be returned.
  */
 static void brcmf_p2p_get_current_chanspec(struct brcmf_p2p_info *p2p,
                        u16 *chanspec)
 {
     struct brcmf_if *ifp;
     u8 mac_addr[ETH_ALEN];
     struct brcmu_chan ch;
     struct brcmf_bss_info_le *bi;
     u8 *buf;
 
     ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp;
 
     if (brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_BSSID, mac_addr,
                    ETH_ALEN) == 0) {
         buf = kzalloc(WL_BSS_INFO_MAX, GFP_KERNEL);
         if (buf != NULL) {
             *(__le32 *)buf = cpu_to_le32(WL_BSS_INFO_MAX);
             if (brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_BSS_INFO,
                            buf, WL_BSS_INFO_MAX) == 0) {
                 bi = (struct brcmf_bss_info_le *)(buf + 4);
                 *chanspec = le16_to_cpu(bi->chanspec);
                 kfree(buf);
                 return;
             }
             kfree(buf);
         }
     }
     /* Use default channel for P2P */
     ch.chnum = BRCMF_P2P_TEMP_CHAN;
     ch.bw = BRCMU_CHAN_BW_20;
     p2p->cfg->d11inf.encchspec(&ch);
     *chanspec = ch.chspec;
 }
 
 /**
  * brcmf_p2p_ifchange - Change a P2P Role.
  * @cfg: driver private data for cfg80211 interface.
  * @if_type: interface type.
  * Returns 0 if success.
  */
 int brcmf_p2p_ifchange(struct brcmf_cfg80211_info *cfg,
                enum brcmf_fil_p2p_if_types if_type)
 {
     struct brcmf_p2p_info *p2p = &cfg->p2p;
     struct brcmf_pub *drvr = cfg->pub;
     struct brcmf_cfg80211_vif *vif;
     struct brcmf_fil_p2p_if_le if_request;
     s32 err;
     u16 chanspec;
 
     brcmf_dbg(TRACE, "Enter\n");
 
     vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif;
     if (!vif) {
         bphy_err(drvr, "vif for P2PAPI_BSSCFG_PRIMARY does not exist\n");
         return -EPERM;
     }
     brcmf_notify_escan_complete(cfg, vif->ifp, true, true);
     vif = p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif;
     if (!vif) {
         bphy_err(drvr, "vif for P2PAPI_BSSCFG_CONNECTION does not exist\n");
         return -EPERM;
     }
     brcmf_set_mpc(vif->ifp, 0);
 
     /* In concurrency case, STA may be already associated in a particular */
     /* channel. so retrieve the current channel of primary interface and  */
     /* then start the virtual interface on that.                          */
     brcmf_p2p_get_current_chanspec(p2p, &chanspec);
 
     if_request.type = cpu_to_le16((u16)if_type);
     if_request.chspec = cpu_to_le16(chanspec);
     memcpy(if_request.addr, p2p->conn_int_addr, sizeof(if_request.addr));
 
     brcmf_cfg80211_arm_vif_event(cfg, vif);
     err = brcmf_fil_iovar_data_set(vif->ifp, "p2p_ifupd", &if_request,
                        sizeof(if_request));
     if (err) {
         bphy_err(drvr, "p2p_ifupd FAILED, err=%d\n", err);
         brcmf_cfg80211_arm_vif_event(cfg, NULL);
         return err;
     }
     err = brcmf_cfg80211_wait_vif_event(cfg, BRCMF_E_IF_CHANGE,
                         BRCMF_VIF_EVENT_TIMEOUT);
     brcmf_cfg80211_arm_vif_event(cfg, NULL);
     if (!err)  {
         bphy_err(drvr, "No BRCMF_E_IF_CHANGE event received\n");
         return -EIO;
     }
 
     err = brcmf_fil_cmd_int_set(vif->ifp, BRCMF_C_SET_SCB_TIMEOUT,
                     BRCMF_SCB_TIMEOUT_VALUE);
 
     return err;
 }
 
 static int brcmf_p2p_request_p2p_if(struct brcmf_p2p_info *p2p,
                     struct brcmf_if *ifp, u8 ea[ETH_ALEN],
                     enum brcmf_fil_p2p_if_types iftype)
 {
     struct brcmf_fil_p2p_if_le if_request;
     int err;
     u16 chanspec;
 
     /* we need a default channel */
     brcmf_p2p_get_current_chanspec(p2p, &chanspec);
 
     /* fill the firmware request */
     memcpy(if_request.addr, ea, ETH_ALEN);
     if_request.type = cpu_to_le16((u16)iftype);
     if_request.chspec = cpu_to_le16(chanspec);
 
     err = brcmf_fil_iovar_data_set(ifp, "p2p_ifadd", &if_request,
                        sizeof(if_request));
 
     return err;
 }
 
 static int brcmf_p2p_disable_p2p_if(struct brcmf_cfg80211_vif *vif)
 {
     struct brcmf_cfg80211_info *cfg = wdev_to_cfg(&vif->wdev);
     struct net_device *pri_ndev = cfg_to_ndev(cfg);
     struct brcmf_if *ifp = netdev_priv(pri_ndev);
     const u8 *addr = vif->wdev.netdev->dev_addr;
 
     return brcmf_fil_iovar_data_set(ifp, "p2p_ifdis", addr, ETH_ALEN);
 }
 
 static int brcmf_p2p_release_p2p_if(struct brcmf_cfg80211_vif *vif)
 {
     struct brcmf_cfg80211_info *cfg = wdev_to_cfg(&vif->wdev);
     struct net_device *pri_ndev = cfg_to_ndev(cfg);
     struct brcmf_if *ifp = netdev_priv(pri_ndev);
     const u8 *addr = vif->wdev.netdev->dev_addr;
 
     return brcmf_fil_iovar_data_set(ifp, "p2p_ifdel", addr, ETH_ALEN);
 }
 
 /**
  * brcmf_p2p_create_p2pdev() - create a P2P_DEVICE virtual interface.
  *
  * @p2p: P2P specific data.
  * @wiphy: wiphy device of new interface.
  * @addr: mac address for this new interface.
  */
 static struct wireless_dev *brcmf_p2p_create_p2pdev(struct brcmf_p2p_info *p2p,
                             struct wiphy *wiphy,
                             u8 *addr)
 {
     struct brcmf_pub *drvr = p2p->cfg->pub;
     struct brcmf_cfg80211_vif *p2p_vif;
     struct brcmf_if *p2p_ifp;
     struct brcmf_if *pri_ifp;
     int err;
     u32 bsscfgidx;
 
     if (p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif)
         return ERR_PTR(-ENOSPC);
 
     p2p_vif = brcmf_alloc_vif(p2p->cfg, NL80211_IFTYPE_P2P_DEVICE);
     if (IS_ERR(p2p_vif)) {
         bphy_err(drvr, "could not create discovery vif\n");
         return (struct wireless_dev *)p2p_vif;
     }
 
     pri_ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp;
 
     /* firmware requires unique mac address for p2pdev interface */
     if (addr && ether_addr_equal(addr, pri_ifp->mac_addr)) {
         bphy_err(drvr, "discovery vif must be different from primary interface\n");
         err = -EINVAL;
         goto fail;
     }
 
     brcmf_p2p_generate_bss_mac(p2p, addr);
     brcmf_p2p_set_firmware(pri_ifp, p2p->dev_addr);
 
     brcmf_cfg80211_arm_vif_event(p2p->cfg, p2p_vif);
     brcmf_fweh_p2pdev_setup(pri_ifp, true);
 
     /* Initialize P2P Discovery in the firmware */
     err = brcmf_fil_iovar_int_set(pri_ifp, "p2p_disc", 1);
     if (err < 0) {
         bphy_err(drvr, "set p2p_disc error\n");
         brcmf_fweh_p2pdev_setup(pri_ifp, false);
         brcmf_cfg80211_arm_vif_event(p2p->cfg, NULL);
         goto fail;
     }
 
     /* wait for firmware event */
     err = brcmf_cfg80211_wait_vif_event(p2p->cfg, BRCMF_E_IF_ADD,
                         BRCMF_VIF_EVENT_TIMEOUT);
     brcmf_cfg80211_arm_vif_event(p2p->cfg, NULL);
     brcmf_fweh_p2pdev_setup(pri_ifp, false);
     if (!err) {
         bphy_err(drvr, "timeout occurred\n");
         err = -EIO;
         goto fail;
     }
 
     /* discovery interface created */
     p2p_ifp = p2p_vif->ifp;
     p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif = p2p_vif;
     memcpy(p2p_ifp->mac_addr, p2p->dev_addr, ETH_ALEN);
     memcpy(&p2p_vif->wdev.address, p2p->dev_addr, sizeof(p2p->dev_addr));
 
     /* verify bsscfg index for P2P discovery */
     err = brcmf_fil_iovar_int_get(pri_ifp, "p2p_dev", &bsscfgidx);
     if (err < 0) {
         bphy_err(drvr, "retrieving discover bsscfg index failed\n");
         goto fail;
     }
 
     WARN_ON(p2p_ifp->bsscfgidx != bsscfgidx);
 
     init_completion(&p2p->send_af_done);
     INIT_WORK(&p2p->afx_hdl.afx_work, brcmf_p2p_afx_handler);
     init_completion(&p2p->afx_hdl.act_frm_scan);
     init_completion(&p2p->wait_next_af);
 
     return &p2p_vif->wdev;
 
 fail:
     brcmf_free_vif(p2p_vif);
     return ERR_PTR(err);
 }
 
 static int brcmf_p2p_get_conn_idx(struct brcmf_cfg80211_info *cfg)
 {
     int i;
     struct brcmf_if *ifp = netdev_priv(cfg_to_ndev(cfg));
 
     if (!ifp)
         return -ENODEV;
 
     for (i = P2PAPI_BSSCFG_CONNECTION; i < P2PAPI_BSSCFG_MAX; i++) {
         if (!cfg->p2p.bss_idx[i].vif) {
             if (i == P2PAPI_BSSCFG_CONNECTION2 &&
                 !(brcmf_feat_is_enabled(ifp, BRCMF_FEAT_RSDB))) {
                 brcmf_err("Multi p2p not supported");
                 return -EIO;
             }
             return i;
         }
     }
     return -EIO;
 }
 
 /**
  * brcmf_p2p_add_vif() - create a new P2P virtual interface.
  *
  * @wiphy: wiphy device of new interface.
  * @name: name of the new interface.
  * @name_assign_type: origin of the interface name
  * @type: nl80211 interface type.
  * @params: contains mac address for P2P device.
  */
 struct wireless_dev *brcmf_p2p_add_vif(struct wiphy *wiphy, const char *name,
                        unsigned char name_assign_type,
                        enum nl80211_iftype type,
                        struct vif_params *params)
 {
     struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
     struct brcmf_if *ifp = netdev_priv(cfg_to_ndev(cfg));
     struct brcmf_pub *drvr = cfg->pub;
     struct brcmf_cfg80211_vif *vif;
     enum brcmf_fil_p2p_if_types iftype;
     int err = 0;
     int connidx;
     u8 *p2p_intf_addr;
 
     if (brcmf_cfg80211_vif_event_armed(cfg))
         return ERR_PTR(-EBUSY);
 
     brcmf_dbg(INFO, "adding vif \"%s\" (type=%d)\n", name, type);
 
     switch (type) {
     case NL80211_IFTYPE_P2P_CLIENT:
         iftype = BRCMF_FIL_P2P_IF_CLIENT;
         break;
     case NL80211_IFTYPE_P2P_GO:
         iftype = BRCMF_FIL_P2P_IF_GO;
         break;
     case NL80211_IFTYPE_P2P_DEVICE:
         return brcmf_p2p_create_p2pdev(&cfg->p2p, wiphy,
                            params->macaddr);
     default:
         return ERR_PTR(-EOPNOTSUPP);
     }
 
     vif = brcmf_alloc_vif(cfg, type);
     if (IS_ERR(vif))
         return (struct wireless_dev *)vif;
     brcmf_cfg80211_arm_vif_event(cfg, vif);
 
     connidx = brcmf_p2p_get_conn_idx(cfg);
 
     if (connidx == P2PAPI_BSSCFG_CONNECTION)
         p2p_intf_addr = cfg->p2p.conn_int_addr;
     else if (connidx == P2PAPI_BSSCFG_CONNECTION2)
         p2p_intf_addr = cfg->p2p.conn2_int_addr;
     else
         err = -EINVAL;
 
     if (!err)
         err =  brcmf_p2p_request_p2p_if(&cfg->p2p, ifp,
                         p2p_intf_addr, iftype);
 
     if (err) {
         brcmf_err("request p2p interface failed\n");
         brcmf_cfg80211_arm_vif_event(cfg, NULL);
         goto fail;
     }
 
     /* wait for firmware event */
     err = brcmf_cfg80211_wait_vif_event(cfg, BRCMF_E_IF_ADD,
                         BRCMF_VIF_EVENT_TIMEOUT);
     brcmf_cfg80211_arm_vif_event(cfg, NULL);
     if (!err) {
         bphy_err(drvr, "timeout occurred\n");
         err = -EIO;
         goto fail;
     }
 
     /* interface created in firmware */
     ifp = vif->ifp;
     if (!ifp) {
         bphy_err(drvr, "no if pointer provided\n");
         err = -ENOENT;
         goto fail;
     }
 
     strncpy(ifp->ndev->name, name, sizeof(ifp->ndev->name) - 1);
     ifp->ndev->name_assign_type = name_assign_type;
     err = brcmf_net_attach(ifp, true);
     if (err) {
         bphy_err(drvr, "Registering netdevice failed\n");
         free_netdev(ifp->ndev);
         goto fail;
     }
 
     cfg->p2p.bss_idx[connidx].vif = vif;
     /* Disable firmware roaming for P2P interface  */
     brcmf_fil_iovar_int_set(ifp, "roam_off", 1);
     if (iftype == BRCMF_FIL_P2P_IF_GO) {
         /* set station timeout for p2p */
         brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCB_TIMEOUT,
                       BRCMF_SCB_TIMEOUT_VALUE);
     }
     return &ifp->vif->wdev;
 
 fail:
     brcmf_free_vif(vif);
     return ERR_PTR(err);
 }
 
 /**
  * brcmf_p2p_del_vif() - delete a P2P virtual interface.
  *
  * @wiphy: wiphy device of interface.
  * @wdev: wireless device of interface.
  */
 int brcmf_p2p_del_vif(struct wiphy *wiphy, struct wireless_dev *wdev)
 {
     struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
     struct brcmf_p2p_info *p2p = &cfg->p2p;
     struct brcmf_cfg80211_vif *vif;
     enum nl80211_iftype iftype;
     bool wait_for_disable = false;
     int err;
 
     brcmf_dbg(TRACE, "delete P2P vif\n");
     vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev);
 
     iftype = vif->wdev.iftype;
     brcmf_cfg80211_arm_vif_event(cfg, vif);
     switch (iftype) {
     case NL80211_IFTYPE_P2P_CLIENT:
         if (test_bit(BRCMF_VIF_STATUS_DISCONNECTING, &vif->sme_state))
             wait_for_disable = true;
         break;
 
     case NL80211_IFTYPE_P2P_GO:
         if (!brcmf_p2p_disable_p2p_if(vif))
             wait_for_disable = true;
         break;
 
     case NL80211_IFTYPE_P2P_DEVICE:
         if (!p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif)
             return 0;
         brcmf_p2p_cancel_remain_on_channel(vif->ifp);
         brcmf_p2p_deinit_discovery(p2p);
         break;
 
     default:
         return -ENOTSUPP;
     }
 
     clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);
     brcmf_dbg(INFO, "P2P: GO_NEG_PHASE status cleared\n");
 
     if (wait_for_disable)
         wait_for_completion_timeout(&cfg->vif_disabled,
                         BRCMF_P2P_DISABLE_TIMEOUT);
 
     err = 0;
     if (iftype != NL80211_IFTYPE_P2P_DEVICE) {
         brcmf_vif_clear_mgmt_ies(vif);
         err = brcmf_p2p_release_p2p_if(vif);
     }
     if (!err) {
         /* wait for firmware event */
         err = brcmf_cfg80211_wait_vif_event(cfg, BRCMF_E_IF_DEL,
                             BRCMF_VIF_EVENT_TIMEOUT);
         if (!err)
             err = -EIO;
         else
             err = 0;
     }
     brcmf_remove_interface(vif->ifp, true);
 
     brcmf_cfg80211_arm_vif_event(cfg, NULL);
     if (iftype != NL80211_IFTYPE_P2P_DEVICE)
         p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif = NULL;
 
     return err;
 }
 
 void brcmf_p2p_ifp_removed(struct brcmf_if *ifp, bool locked)
 {
     struct brcmf_cfg80211_info *cfg;
     struct brcmf_cfg80211_vif *vif;
 
     brcmf_dbg(INFO, "P2P: device interface removed\n");
     vif = ifp->vif;
     cfg = wdev_to_cfg(&vif->wdev);
     cfg->p2p.bss_idx[P2PAPI_BSSCFG_DEVICE].vif = NULL;
     if (!locked) {
         rtnl_lock();
         wiphy_lock(cfg->wiphy);
         cfg80211_unregister_wdev(&vif->wdev);
         wiphy_unlock(cfg->wiphy);
         rtnl_unlock();
     } else {
         cfg80211_unregister_wdev(&vif->wdev);
     }
     brcmf_free_vif(vif);
 }
 
 int brcmf_p2p_start_device(struct wiphy *wiphy, struct wireless_dev *wdev)
 {
     struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
     struct brcmf_p2p_info *p2p = &cfg->p2p;
     struct brcmf_cfg80211_vif *vif;
     int err;
 
     vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev);
     mutex_lock(&cfg->usr_sync);
     err = brcmf_p2p_enable_discovery(p2p);
     if (!err)
         set_bit(BRCMF_VIF_STATUS_READY, &vif->sme_state);
     mutex_unlock(&cfg->usr_sync);
     return err;
 }
 
 void brcmf_p2p_stop_device(struct wiphy *wiphy, struct wireless_dev *wdev)
 {
     struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
     struct brcmf_p2p_info *p2p = &cfg->p2p;
     struct brcmf_cfg80211_vif *vif;
 
     vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev);
     /* This call can be result of the unregister_wdev call. In that case
      * we dont want to do anything anymore. Just return. The config vif
      * will have been cleared at this point.
      */
     if (p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif == vif) {
         mutex_lock(&cfg->usr_sync);
         /* Set the discovery state to SCAN */
         (void)brcmf_p2p_set_discover_state(vif->ifp,
                            WL_P2P_DISC_ST_SCAN, 0, 0);
         brcmf_abort_scanning(cfg);
         clear_bit(BRCMF_VIF_STATUS_READY, &vif->sme_state);
         mutex_unlock(&cfg->usr_sync);
     }
 }
 
 /**
  * brcmf_p2p_attach() - attach for P2P.
  *
  * @cfg: driver private data for cfg80211 interface.
  * @p2pdev_forced: create p2p device interface at attach.
  */
 s32 brcmf_p2p_attach(struct brcmf_cfg80211_info *cfg, bool p2pdev_forced)
 {
     struct brcmf_pub *drvr = cfg->pub;
     struct brcmf_p2p_info *p2p;
     struct brcmf_if *pri_ifp;
     s32 err = 0;
     void *err_ptr;
 
     p2p = &cfg->p2p;
     p2p->cfg = cfg;
 
     pri_ifp = brcmf_get_ifp(cfg->pub, 0);
     p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif = pri_ifp->vif;
 
     if (p2pdev_forced) {
         err_ptr = brcmf_p2p_create_p2pdev(p2p, NULL, NULL);
         if (IS_ERR(err_ptr)) {
             bphy_err(drvr, "P2P device creation failed.\n");
             err = PTR_ERR(err_ptr);
         }
     } else {
         p2p->p2pdev_dynamically = true;
     }
     return err;
 }
 
 /**
  * brcmf_p2p_detach() - detach P2P.
  *
  * @p2p: P2P specific data.
  */
 void brcmf_p2p_detach(struct brcmf_p2p_info *p2p)
 {
     struct brcmf_cfg80211_vif *vif;
 
     vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
     if (vif != NULL) {
         brcmf_p2p_cancel_remain_on_channel(vif->ifp);
         brcmf_p2p_deinit_discovery(p2p);
         brcmf_remove_interface(vif->ifp, false);
     }
     /* just set it all to zero */
     memset(p2p, 0, sizeof(*p2p));
 }
 

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