p2p.c 69 KB
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/*
 * Copyright (c) 2012 Broadcom Corporation
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
#include <linux/slab.h>
#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/rtnetlink.h>
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#include <net/cfg80211.h>

#include <brcmu_wifi.h>
#include <brcmu_utils.h>
#include <defs.h>
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#include "core.h"
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#include "debug.h"
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#include "fwil.h"
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#include "fwil_types.h"
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#include "p2p.h"
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#include "cfg80211.h"
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/* 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
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#define IS_P2P_SOCIAL_CHANNEL(channel) ((channel == SOCIAL_CHAN_1) || \
					 (channel == SOCIAL_CHAN_2) || \
					 (channel == SOCIAL_CHAN_3))
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#define BRCMF_P2P_TEMP_CHAN	SOCIAL_CHAN_3
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#define SOCIAL_CHAN_CNT		3
#define AF_PEER_SEARCH_CNT	2

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#define BRCMF_SCB_TIMEOUT_VALUE	20

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#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 */

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/* 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
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#define P2P_AF_TX_MAX_RETRY		1
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#define P2P_AF_MAX_WAIT_TIME		2000
#define P2P_INVALID_CHANNEL		-1
#define P2P_CHANNEL_SYNC_RETRY		5
#define P2P_AF_FRM_SCAN_MAX_WAIT	1500
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#define P2P_DEFAULT_SLEEP_TIME_VSDB	200
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/* 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 Comback Request AF */
#define P2PSD_ACTION_ID_GAS_CRESP	0x0d	/* GAS Comback Response AF */

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/**
 * 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;
	};
};

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/**
 * struct brcmf_p2p_pub_act_frame - WiFi P2P Public Action Frame
 *
 * @category: P2P_PUB_AF_CATEGORY
 * @action: P2P_PUB_AF_ACTION
 * @oui[3]: P2P_OUI
 * @oui_type: OUI type - P2P_VER
 * @subtype: OUI subtype - P2P_TYPE_*
 * @dialog_token: nonzero, identifies req/rsp transaction
 * @elts[1]: 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[1];
};

/**
 * struct brcmf_p2p_action_frame - WiFi P2P Action Frame
 *
 * @category: P2P_AF_CATEGORY
 * @OUI[3]: OUI - P2P_OUI
 * @type: OUI Type - P2P_VER
 * @subtype: OUI Subtype - P2P_AF_*
 * @dialog_token: nonzero, identifies req/resp tranaction
 * @elts[1]: Variable length information elements.
 */
struct brcmf_p2p_action_frame {
	u8	category;
	u8	oui[3];
	u8	type;
	u8	subtype;
	u8	dialog_token;
	u8	elts[1];
};

/**
 * 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[1]: 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[1];
};

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/**
 * 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
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 * @search_channel: 1: search peer's channel to send af
 * extra_listen: keep the dwell time to get af response frame.
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 */
struct brcmf_config_af_params {
	s32 mpc_onoff;
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	bool search_channel;
	bool extra_listen;
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};
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/**
 * 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(struct brcmf_p2p_pub_act_frame) - 1)
		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(struct brcmf_p2p_action_frame) - 1)
		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(struct brcmf_p2psd_gas_pub_act_frame) - 1)
		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
 */
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#ifdef DEBUG

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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 Comback Request\n",
				  (tx) ? "TX" : "RX");
			break;
		case P2PSD_ACTION_ID_GAS_CRESP:
			brcmf_dbg(TRACE, "%s P2P GAS Comback Response\n",
				  (tx) ? "TX" : "RX");
			break;
		default:
			brcmf_dbg(TRACE, "%s Unknown P2P GAS Frame\n",
				  (tx) ? "TX" : "RX");
			break;
		}
	}
}

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#else

static void brcmf_p2p_print_actframe(bool tx, void *frame, u32 frame_len)
{
}

#endif

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/**
 * brcmf_p2p_set_firmware() - prepare firmware for peer-to-peer operation.
 *
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 * @ifp: ifp to use for iovars (primary).
 * @p2p_mac: mac address to configure for p2p_da_override
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 */
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static int brcmf_p2p_set_firmware(struct brcmf_if *ifp, u8 *p2p_mac)
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{
	s32 ret = 0;

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	brcmf_fil_cmd_int_set(ifp, BRCMF_C_DOWN, 1);
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	brcmf_fil_iovar_int_set(ifp, "apsta", 1);
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	brcmf_fil_cmd_int_set(ifp, BRCMF_C_UP, 1);
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	/* In case of COB type, firmware has default mac address
	 * After Initializing firmware, we have to set current mac address to
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	 * firmware for P2P device address. This must be done with discovery
	 * disabled.
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	 */
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	brcmf_fil_iovar_int_set(ifp, "p2p_disc", 0);

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	ret = brcmf_fil_iovar_data_set(ifp, "p2p_da_override", p2p_mac,
				       ETH_ALEN);
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	if (ret)
		brcmf_err("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.
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 * @dev_addr: optional device address.
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 *
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 * P2P needs mac addresses for P2P device and interface. If no device
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 * address it specified, these are derived from a random ethernet
 * address.
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 */
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static void brcmf_p2p_generate_bss_mac(struct brcmf_p2p_info *p2p, u8 *dev_addr)
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{
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	bool random_addr = false;
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	if (!dev_addr || is_zero_ether_addr(dev_addr))
		random_addr = true;
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	/* Generate the P2P Device Address obtaining a random ethernet
	 * address with the locally administered bit set.
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	 */
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	if (random_addr)
		eth_random_addr(p2p->dev_addr);
	else
		memcpy(p2p->dev_addr, dev_addr, ETH_ALEN);
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	/* 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->int_addr, p2p->dev_addr, ETH_ALEN);
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	p2p->int_addr[0] |= 0x02;
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	p2p->int_addr[4] ^= 0x80;
}

/**
 * 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.
 *
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 * Resets the discovery state and disables it in firmware.
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 */
static s32 brcmf_p2p_deinit_discovery(struct brcmf_p2p_info *p2p)
{
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	struct brcmf_cfg80211_vif *vif;
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	brcmf_dbg(TRACE, "enter\n");
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	/* Set the discovery state to SCAN */
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	vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
	(void)brcmf_p2p_set_discover_state(vif->ifp, WL_P2P_DISC_ST_SCAN, 0, 0);
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	/* Disable P2P discovery in the firmware */
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	vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif;
	(void)brcmf_fil_iovar_int_set(vif->ifp, "p2p_disc", 0);
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	return 0;
}

/**
 * brcmf_p2p_enable_discovery() - initialize and configure discovery.
 *
 * @p2p: P2P specific data.
 *
 * Initializes the discovery device and configure the virtual interface.
 */
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{
	struct brcmf_cfg80211_vif *vif;
	s32 ret = 0;

	brcmf_dbg(TRACE, "enter\n");
	vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
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	if (!vif) {
		brcmf_err("P2P config device not available\n");
		ret = -EPERM;
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		goto exit;
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	}

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	if (test_bit(BRCMF_P2P_STATUS_ENABLED, &p2p->status)) {
		brcmf_dbg(INFO, "P2P config device already configured\n");
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		goto exit;
	}

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	/* 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) {
		brcmf_err("set p2p_disc error\n");
		goto exit;
	}
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	vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
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	ret = brcmf_p2p_set_discover_state(vif->ifp, WL_P2P_DISC_ST_SCAN, 0, 0);
	if (ret < 0) {
		brcmf_err("unable to set WL_P2P_DISC_ST_SCAN\n");
		goto exit;
	}
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	/*
	 * 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);
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	if (ret < 0) {
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		brcmf_err("wsec error %d\n", ret);
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		goto exit;
	}
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	set_bit(BRCMF_P2P_STATUS_ENABLED, &p2p->status);
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exit:
	return ret;
}

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/**
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 * 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.
 * @action: scan action to pass to firmware.
 * @bss_type: type of P2P bss.
 */
static s32 brcmf_p2p_escan(struct brcmf_p2p_info *p2p, u32 num_chans,
			   u16 chanspecs[], s32 search_state, u16 action,
			   enum p2p_bss_type bss_type)
{
	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;
	struct brcmf_ssid ssid;

	memsize += num_chans * sizeof(__le16);
	memblk = kzalloc(memsize, GFP_KERNEL);
	if (!memblk)
		return -ENOMEM;

	vif = p2p->bss_idx[bss_type].vif;
	if (vif == NULL) {
		brcmf_err("no vif for bss type %d\n", bss_type);
		ret = -EINVAL;
		goto exit;
	}

	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 */
		ssid.SSID_len = 0;
		memset(ssid.SSID, 0, sizeof(ssid.SSID));
		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.
		 */
		ssid.SSID_len = BRCMF_P2P_WILDCARD_SSID_LEN;
		memcpy(ssid.SSID, BRCMF_P2P_WILDCARD_SSID, ssid.SSID_len);
		break;
	default:
		brcmf_err(" 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 = (struct brcmf_p2p_scan_le *)memblk;
	p2p_params->type = 'E';

	/* determine the scan engine parameters */
	sparams = &p2p_params->eparams.params_le;
	sparams->bss_type = DOT11_BSSTYPE_ANY;
	if (p2p->cfg->active_scan)
		sparams->scan_type = 0;
	else
		sparams->scan_type = 1;

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	eth_broadcast_addr(sparams->bssid);
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	if (ssid.SSID_len)
		memcpy(sparams->ssid_le.SSID, ssid.SSID, ssid.SSID_len);
	sparams->ssid_le.SSID_len = cpu_to_le32(ssid.SSID_len);
	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;
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	else if (brcmf_get_vif_state_any(p2p->cfg, BRCMF_VIF_STATUS_CONNECTED))
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		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;
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		/* WAR to sync with presence period of VSDB GO.
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		 * 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(action);
	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.
 * @ndev: net device for which scan is requested.
 * @request: scan request from cfg80211.
 * @action: scan action.
 *
 * 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,
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			       struct cfg80211_scan_request *request,
			       u16 action)
{
	struct brcmf_p2p_info *p2p = &cfg->p2p;
	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");
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		} else if (dev != NULL &&
			   vif->wdev.iftype == NL80211_IFTYPE_P2P_GO) {
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			/* 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 |
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					   IEEE80211_CHAN_NO_IR))
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				continue;

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			chanspecs[i] = channel_to_chanspec(&p2p->cfg->d11inf,
							   chan);
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			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,
				      action, P2PAPI_BSSCFG_DEVICE);
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		kfree(chanspecs);
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	}
exit:
	if (err)
		brcmf_err("error (%d)\n", err);
	return err;
}

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/**
 * 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;
}


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/**
 * brcmf_p2p_scan_prep() - prepare scan based on request.
 *
 * @wiphy: wiphy device.
 * @request: scan request from cfg80211.
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 * @vif: vif on which scan request is to be executed.
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 *
 * 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,
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			struct cfg80211_scan_request *request,
			struct brcmf_cfg80211_vif *vif)
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{
	struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
	struct brcmf_p2p_info *p2p = &cfg->p2p;
	int err = 0;

	if (brcmf_p2p_scan_is_p2p_request(request)) {
		/* find my listen channel */
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		err = brcmf_p2p_find_listen_channel(request->ie,
						    request->ie_len);
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		if (err < 0)
			return err;

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		p2p->afx_hdl.my_listen_chan = err;

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		clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);
		brcmf_dbg(INFO, "P2P: GO_NEG_PHASE status cleared\n");

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		err = brcmf_p2p_enable_discovery(p2p);
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		if (err)
			return err;
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		vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
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		/* override .run_escan() callback. */
		cfg->escan_info.run = brcmf_p2p_run_escan;
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	}
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	err = brcmf_vif_set_mgmt_ie(vif, BRCMF_VNDR_IE_PRBREQ_FLAG,
				    request->ie, request->ie_len);
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	return err;
}

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/**
 * brcmf_p2p_discover_listen() - set firmware to discover listen state.
 *
 * @p2p: p2p device.
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 * @channel: channel nr for discover listen.
 * @duration: time in ms to stay on channel.
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 *
 */
static s32
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brcmf_p2p_discover_listen(struct brcmf_p2p_info *p2p, u16 channel, u32 duration)
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{
	struct brcmf_cfg80211_vif *vif;
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	struct brcmu_chan ch;
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	s32 err = 0;

	vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
	if (!vif) {
		brcmf_err("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)) {
		brcmf_err("Previous LISTEN is not completed yet\n");
		/* WAR: prevent cookie mismatch in wpa_supplicant return OK */
		goto exit;
	}

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	ch.chnum = channel;
	ch.bw = BRCMU_CHAN_BW_20;
	p2p->cfg->d11inf.encchspec(&ch);
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	err = brcmf_p2p_set_discover_state(vif->ifp, WL_P2P_DISC_ST_LISTEN,
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					   ch.chspec, (u16)duration);
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	if (!err) {
		set_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN, &p2p->status);
		p2p->remain_on_channel_cookie++;
	}
exit:
	return err;
}


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/**
 * brcmf_p2p_remain_on_channel() - put device on channel and stay there.
 *
 * @wiphy: wiphy device.
 * @channel: channel to stay on.
 * @duration: time in ms to remain on channel.
 *
 */
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;
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	channel_nr = ieee80211_frequency_to_channel(channel->center_freq);
	brcmf_dbg(TRACE, "Enter, channel: %d, duration ms (%d)\n", channel_nr,
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		  duration);

	err = brcmf_p2p_enable_discovery(p2p);
	if (err)
		goto exit;
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	err = brcmf_p2p_discover_listen(p2p, channel_nr, duration);
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	if (err)
		goto exit;

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	memcpy(&p2p->remain_on_channel, channel, sizeof(*channel));
	*cookie = p2p->remain_on_channel_cookie;
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	cfg80211_ready_on_channel(wdev, *cookie, channel, duration, GFP_KERNEL);
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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");
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	if (test_and_clear_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN,
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			       &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);
		}

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		cfg80211_remain_on_channel_expired(&ifp->vif->wdev,
						   p2p->remain_on_channel_cookie,
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						   &p2p->remain_on_channel,
						   GFP_KERNEL);
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	}
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	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);
}


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/**
 * 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)
{
	s32 err;
	u32 channel_cnt;
	u16 *default_chan_list;
	u32 i;
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	struct brcmu_chan ch;
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	brcmf_dbg(TRACE, "Enter\n");

	if (channel)
		channel_cnt = AF_PEER_SEARCH_CNT;
	else
		channel_cnt = SOCIAL_CHAN_CNT;
	default_chan_list = kzalloc(channel_cnt * sizeof(*default_chan_list),
				    GFP_KERNEL);
	if (default_chan_list == NULL) {
		brcmf_err("channel list allocation failed\n");
		err = -ENOMEM;
		goto exit;
	}
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	ch.bw = BRCMU_CHAN_BW_20;
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	if (channel) {
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		ch.chnum = channel;
		p2p->cfg->d11inf.encchspec(&ch);
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		/* insert same channel to the chan_list */
		for (i = 0; i < channel_cnt; i++)
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			default_chan_list[i] = ch.chspec;
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	} else {
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		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;
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	}
	err = brcmf_p2p_escan(p2p, channel_cnt, default_chan_list,
			      WL_P2P_DISC_ST_SEARCH, WL_ESCAN_ACTION_START,
			      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);
	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,
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						100 * (1 + prandom_u32() % 3));
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	else
		err = brcmf_p2p_act_frm_search(p2p, afx_hdl->peer_listen_chan);

	if (err) {
		brcmf_err("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;
	unsigned long duration;
	s32 retry;

	brcmf_dbg(TRACE, "Enter\n");

	pri_vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif;

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	reinit_completion(&afx_hdl->act_frm_scan);
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	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;
	duration = msecs_to_jiffies(P2P_AF_FRM_SCAN_MAX_WAIT);
	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, duration);
		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,
						    duration);
		}
		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;
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	struct brcmu_chan ch;
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	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) &&
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	    (ether_addr_equal(p2p_dev_addr, afx_hdl->tx_dst_addr))) {
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		if (!bi->ctl_ch) {
			ch.chspec = le16_to_cpu(bi->chanspec);
			cfg->d11inf.decchspec(&ch);
			bi->ctl_ch = ch.chnum;
		}
		afx_hdl->peer_chan = bi->ctl_ch;
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		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_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;
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	struct brcmf_if *ifp = cfg->escan_info.ifp;
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	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)
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			brcmf_notify_escan_complete(cfg, ifp, true, true);
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	} 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 */
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		brcmf_notify_escan_complete(cfg, ifp, true, true);
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	}
}


/**
 * brcmf_p2p_gon_req_collision() - Check if go negotiaton collission
 *
 * @p2p: p2p device info struct.
 *
 * 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;
}


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/**
 * 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)
{
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	struct brcmf_cfg80211_info *cfg = ifp->drvr->config;
	struct brcmf_p2p_info *p2p = &cfg->p2p;
	struct afx_hdl *afx_hdl = &p2p->afx_hdl;
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	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;
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	u8 *frame = (u8 *)(rxframe + 1);
	struct brcmf_p2p_pub_act_frame *act_frm;
	struct brcmf_p2psd_gas_pub_act_frame *sd_act_frm;
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	struct brcmu_chan ch;
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	struct ieee80211_mgmt *mgmt_frame;
	s32 freq;
	u16 mgmt_type;
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	u8 action;
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	if (e->datalen < sizeof(*rxframe)) {
		brcmf_dbg(SCAN, "Event data to small. Ignore\n");
		return 0;
	}

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	ch.chspec = be16_to_cpu(rxframe->chanspec);
	cfg->d11inf.decchspec(&ch);
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	/* 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;

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	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) &&
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			    (ether_addr_equal(afx_hdl->tx_dst_addr, e->addr))) {
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				afx_hdl->peer_chan = ch.chnum;
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				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))
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			brcmf_set_mpc(ifp, 1);
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		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);
	}
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	mgmt_frame = kzalloc(offsetof(struct ieee80211_mgmt, u) +
			     mgmt_frame_len, GFP_KERNEL);
	if (!mgmt_frame) {
		brcmf_err("No memory available for action frame\n");
		return -ENOMEM;
	}
	memcpy(mgmt_frame->da, ifp->mac_addr, ETH_ALEN);
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	brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_BSSID, mgmt_frame->bssid,
			       ETH_ALEN);
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	memcpy(mgmt_frame->sa, e->addr, ETH_ALEN);
	mgmt_frame->frame_control = cpu_to_le16(IEEE80211_STYPE_ACTION);
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	memcpy(&mgmt_frame->u, frame, mgmt_frame_len);
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	mgmt_frame_len += offsetof(struct ieee80211_mgmt, u);

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	freq = ieee80211_channel_to_frequency(ch.chnum,
					      ch.band == BRCMU_CHAN_BAND_2G ?
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					      IEEE80211_BAND_2GHZ :
					      IEEE80211_BAND_5GHZ);
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	wdev = &ifp->vif->wdev;
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	cfg80211_rx_mgmt(wdev, freq, 0, (u8 *)mgmt_frame, mgmt_frame_len, 0);
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	kfree(mgmt_frame);
	return 0;
}


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1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
/**
 * 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;

1463
1464
1465
1466
	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);
1467

1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
	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);
		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);
		}
1482

1483
1484
1485
	} else {
		complete(&p2p->send_af_done);
	}
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
	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_cfg80211_vif *vif;
	s32 err = 0;
	s32 timeout = 0;

	brcmf_dbg(TRACE, "Enter\n");

1511
	reinit_completion(&p2p->send_af_done);
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
	clear_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status);
	clear_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status);

	vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
	err = brcmf_fil_bsscfg_data_set(vif->ifp, "actframe", af_params,
					sizeof(*af_params));
	if (err) {
		brcmf_err(" sending action frame has failed\n");
		goto exit;
	}

1523
1524
1525
	p2p->af_sent_channel = le32_to_cpu(af_params->channel);
	p2p->af_tx_sent_jiffies = jiffies;

1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
	timeout = wait_for_completion_timeout(&p2p->send_af_done,
					msecs_to_jiffies(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_fil_action_frame_le *action_frame;
	struct brcmf_p2p_pub_act_frame *act_frm;
	s32 err = 0;
1561
	u16 ie_len;
1562
1563
1564
1565

	action_frame = &af_params->action_frame;
	act_frm = (struct brcmf_p2p_pub_act_frame *)(action_frame->data);

1566
1567
	config_af_params->extra_listen = true;

1568
1569
1570
1571
1572
	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;
1573
		config_af_params->search_channel = true;
1574
		p2p->next_af_subtype = act_frm->subtype + 1;
1575
		p2p->gon_req_action = true;
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
		/* 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);
1592
		config_af_params->extra_listen = false;
1593
1594
		break;
	case P2P_PAF_INVITE_REQ:
1595
		config_af_params->search_channel = true;
1596
1597
1598
1599
1600
1601
1602
		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);
1603
		config_af_params->extra_listen = false;
1604
1605
		break;
	case P2P_PAF_DEVDIS_REQ:
1606
		config_af_params->search_channel = true;
1607
1608
1609
1610
1611
1612
1613
		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);
1614
		config_af_params->extra_listen = false;
1615
1616
		break;
	case P2P_PAF_PROVDIS_REQ:
1617
1618
1619
1620
1621
1622
		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;
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
		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);
1633
		config_af_params->extra_listen = false;
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
		break;
	default:
		brcmf_err("Unknown p2p pub act frame subtype: %d\n",
			  act_frm->subtype);
		err = -EINVAL;
	}
	return err;
}

/**
 * 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;
1655
	struct brcmf_if *ifp = netdev_priv(ndev);
1656
1657
	struct brcmf_fil_action_frame_le *action_frame;
	struct brcmf_config_af_params config_af_params;
1658
	struct afx_hdl *afx_hdl = &p2p->afx_hdl;
1659
1660
1661
1662
1663
	u16 action_frame_len;
	bool ack = false;
	u8 category;
	u8 action;
	s32 tx_retry;
1664
1665
	s32 extra_listen_time;
	uint delta_ms;
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681

	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;
1682
	p2p->gon_req_action = false;
1683
1684
1685

	/* config parameters */
	config_af_params.mpc_onoff = -1;
1686
1687
	config_af_params.search_channel = false;
	config_af_params.extra_listen = false;
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700

	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.                  */
			brcmf_err("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) {
1701
1702
1703
			/* configure service discovery query frame */
			config_af_params.search_channel = true;

1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
			/* 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 {
			brcmf_err("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 {
		brcmf_err("Unknown Frame: category 0x%x, action 0x%x\n",
			  category, action);
		return false;
	}

1729
1730
1731
1732
1733
1734
1735
	/* 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);

1736
1737
1738
1739
	/* if scan is ongoing, abort current scan. */
	if (test_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status))
		brcmf_abort_scanning(cfg);

1740
1741
	memcpy(afx_hdl->tx_dst_addr, action_frame->da, ETH_ALEN);

1742
1743
	/* To make sure to send successfully action frame, turn off mpc */
	if (config_af_params.mpc_onoff == 0)
1744
		brcmf_set_mpc(ifp, 0);
1745

1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
	/* 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) {
			brcmf_err("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.
		 */
1772
		brcmf_notify_escan_complete(cfg, ifp, true, true);
1773
1774
1775
1776
1777

		/* update channel */
		af_params->channel = cpu_to_le32(afx_hdl->peer_chan);
	}

1778
	tx_retry = 0;
1779
1780
	while (!p2p->block_gon_req_tx &&
	       (ack == false) && (tx_retry < P2P_AF_TX_MAX_RETRY)) {
1781
1782
1783
		ack = !brcmf_p2p_tx_action_frame(p2p, af_params);
		tx_retry++;
	}
1784
	if (ack == false) {
1785
		brcmf_err("Failed to send Action Frame(retry %d)\n", tx_retry);
1786
1787
		clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status);
	}
1788
1789

exit:
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
	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->