text: /*
   * Broadcom Dongle Host Driver (DHD), common DHD core.
   *
   * Copyright (C) 1999-2011, Broadcom Corporation
   * 
   *         Unless you and Broadcom execute a separate written software license
   * agreement governing use of this software, this software is licensed to you
   * under the terms of the GNU General Public License version 2 (the "GPL"),
   * available at http://www.broadcom.com/licenses/GPLv2.php, with the
   * following added to such license:
   * 
   *      As a special exception, the copyright holders of this software give you
   * permission to link this software with independent modules, and to copy and
   * distribute the resulting executable under terms of your choice, provided that
   * you also meet, for each linked independent module, the terms and conditions of
   * the license of that module.  An independent module is a module which is not
   * derived from this software.  The special exception does not apply to any
   * modifications of the software.
   * 
   *      Notwithstanding the above, under no circumstances may you combine this
   * software in any way with any other Broadcom software provided under a license
   * other than the GPL, without Broadcom's express prior written consent.
   *
   * $Id: //DTV/MP_BR/DTV_X_IDTV0801_002200_2_001_2_001_1210_001/chiling/kernel/linux-3.0/drivers/net/wireless/bcmdhd/dhd_common.c#1 $
   */
  #include <typedefs.h>
  #include <osl.h>
  
  #include <epivers.h>
  #include <bcmutils.h>
  
  #include <bcmendian.h>
  #include <dngl_stats.h>
  #include <wlioctl.h>
  #include <dhd.h>
  
  #include <proto/bcmevent.h>
  
  #include <dhd_bus.h>
  #include <dhd_proto.h>
  #include <dhd_dbg.h>
  #include <msgtrace.h>
  
  #ifdef WL_CFG80211
  #include <wl_cfg80211.h>
  #endif
  #include <proto/bt_amp_hci.h>
  #include <dhd_bta.h>
  #ifdef SET_RANDOM_MAC_SOFTAP
  #include <linux/random.h>
  #include <linux/jiffies.h>
  #endif
  
  #ifdef PROP_TXSTATUS
  #include <wlfc_proto.h>
  #include <dhd_wlfc.h>
  #endif
  
  
  #ifdef WLMEDIA_HTSF
  extern void htsf_update(struct dhd_info *dhd, void *data);
  #endif
  int dhd_msg_level = DHD_ERROR_VAL;
  
  
  #include <wl_iw.h>
  
  char fw_path[MOD_PARAM_PATHLEN];
  char nv_path[MOD_PARAM_PATHLEN];
  
  #ifdef SOFTAP
  char fw_path2[MOD_PARAM_PATHLEN];
  extern bool softap_enabled;
  #endif
  
  /* Last connection success/failure status */
  uint32 dhd_conn_event;
  uint32 dhd_conn_status;
  uint32 dhd_conn_reason;
  
  #define htod32(i) i
  #define htod16(i) i
  #define dtoh32(i) i
  #define dtoh16(i) i
  extern int dhd_iscan_request(void * dhdp, uint16 action);
  extern void dhd_ind_scan_confirm(void *h, bool status);
  extern int dhd_iscan_in_progress(void *h);
  void dhd_iscan_lock(void);
  void dhd_iscan_unlock(void);
  extern int dhd_change_mtu(dhd_pub_t *dhd, int new_mtu, int ifidx);
  bool ap_cfg_running = FALSE;
  bool ap_fw_loaded = FALSE;
  
  
  #ifdef DHD_DEBUG
  const char dhd_version[] = "Dongle Host Driver, version " EPI_VERSION_STR "\nCompiled on "
  	__DATE__ " at " __TIME__;
  #else
  const char dhd_version[] = "Dongle Host Driver, version " EPI_VERSION_STR;
  #endif
  
  void dhd_set_timer(void *bus, uint wdtick);
  
  /* IOVar table */
  enum {
  	IOV_VERSION = 1,
  	IOV_MSGLEVEL,
  	IOV_BCMERRORSTR,
  	IOV_BCMERROR,
  	IOV_WDTICK,
  	IOV_DUMP,
  	IOV_CLEARCOUNTS,
  	IOV_LOGDUMP,
  	IOV_LOGCAL,
  	IOV_LOGSTAMP,
  	IOV_GPIOOB,
  	IOV_IOCTLTIMEOUT,
  	IOV_HCI_CMD,		/* HCI command */
  	IOV_HCI_ACL_DATA,	/* HCI data packet */
  #if defined(DHD_DEBUG)
  	IOV_CONS,
  	IOV_DCONSOLE_POLL,
  #endif /* defined(DHD_DEBUG) */
  #ifdef PROP_TXSTATUS
  	IOV_PROPTXSTATUS_ENABLE,
  	IOV_PROPTXSTATUS_MODE,
  #endif
  	IOV_BUS_TYPE,
  #ifdef WLMEDIA_HTSF
  	IOV_WLPKTDLYSTAT_SZ,
  #endif
  	IOV_CHANGEMTU,
  	IOV_LAST
  };
  
  const bcm_iovar_t dhd_iovars[] = {
  	{"version", 	IOV_VERSION,	0,	IOVT_BUFFER,	sizeof(dhd_version) },
  #ifdef DHD_DEBUG
  	{"msglevel",	IOV_MSGLEVEL,	0,	IOVT_UINT32,	0 },
  #endif /* DHD_DEBUG */
  	{"bcmerrorstr", IOV_BCMERRORSTR, 0, IOVT_BUFFER,	BCME_STRLEN },
  	{"bcmerror",	IOV_BCMERROR,	0,	IOVT_INT8,	0 },
  	{"wdtick",	IOV_WDTICK, 0,	IOVT_UINT32,	0 },
  	{"dump",	IOV_DUMP,	0,	IOVT_BUFFER,	DHD_IOCTL_MAXLEN },
  #ifdef DHD_DEBUG
  	{"cons",	IOV_CONS,	0,	IOVT_BUFFER,	0 },
  	{"dconpoll",	IOV_DCONSOLE_POLL, 0,	IOVT_UINT32,	0 },
  #endif
  	{"clearcounts", IOV_CLEARCOUNTS, 0, IOVT_VOID,	0 },
  	{"gpioob",	IOV_GPIOOB,	0,	IOVT_UINT32,	0 },
  	{"ioctl_timeout",	IOV_IOCTLTIMEOUT,	0,	IOVT_UINT32,	0 },
  	{"HCI_cmd",	IOV_HCI_CMD,	0,	IOVT_BUFFER,	0},
  	{"HCI_ACL_data", IOV_HCI_ACL_DATA, 0,	IOVT_BUFFER,	0},
  #ifdef PROP_TXSTATUS
  	{"proptx",	IOV_PROPTXSTATUS_ENABLE,	0,	IOVT_UINT32,	0 },
  	/*
  	set the proptxtstatus operation mode:
  	0 - Do not do any proptxtstatus flow control
  	1 - Use implied credit from a packet status
  	2 - Use explicit credit
  	*/
  	{"ptxmode",	IOV_PROPTXSTATUS_MODE,	0,	IOVT_UINT32,	0 },
  #endif
  	{"bustype", IOV_BUS_TYPE, 0, IOVT_UINT32, 0},
  #ifdef WLMEDIA_HTSF
  	{"pktdlystatsz", IOV_WLPKTDLYSTAT_SZ, 0, IOVT_UINT8, 0 },
  #endif
  	{"changemtu", IOV_CHANGEMTU, 0, IOVT_UINT32, 0 },
  	{NULL, 0, 0, 0, 0 }
  };
  
  struct dhd_cmn *
  dhd_common_init(osl_t *osh)
  {
  	dhd_cmn_t *cmn;
  
  	/* Init global variables at run-time, not as part of the declaration.
  	 * This is required to support init/de-init of the driver. Initialization
  	 * of globals as part of the declaration results in non-deterministic
  	 * behavior since the value of the globals may be different on the
  	 * first time that the driver is initialized vs subsequent initializations.
  	 */
  	/* Allocate private bus interface state */
  	if (!(cmn = MALLOC(osh, sizeof(dhd_cmn_t)))) {
  		DHD_ERROR(("%s: MALLOC failed\n", __FUNCTION__));
  		return NULL;
  	}
  	memset(cmn, 0, sizeof(dhd_cmn_t));
  	cmn->osh = osh;
  
  #ifdef CONFIG_BCMDHD_FW_PATH
  	bcm_strncpy_s(fw_path, sizeof(fw_path), CONFIG_BCMDHD_FW_PATH, MOD_PARAM_PATHLEN-1);
  #else /* CONFIG_BCMDHD_FW_PATH */
  	fw_path[0] = '\0';
  #endif /* CONFIG_BCMDHD_FW_PATH */
  #ifdef CONFIG_BCMDHD_NVRAM_PATH
  	bcm_strncpy_s(nv_path, sizeof(nv_path), CONFIG_BCMDHD_NVRAM_PATH, MOD_PARAM_PATHLEN-1);
  #else /* CONFIG_BCMDHD_NVRAM_PATH */
  	nv_path[0] = '\0';
  #endif /* CONFIG_BCMDHD_NVRAM_PATH */
  #ifdef SOFTAP
  	fw_path2[0] = '\0';
  #endif
  	return cmn;
  }
  
  void
  dhd_common_deinit(dhd_pub_t *dhd_pub, dhd_cmn_t *sa_cmn)
  {
  	osl_t *osh;
  	dhd_cmn_t *cmn;
  
  	if (dhd_pub != NULL)
  		cmn = dhd_pub->cmn;
  	else
  		cmn = sa_cmn;
  
  	if (!cmn)
  		return;
  
  	osh = cmn->osh;
  
  	if (dhd_pub != NULL)
  	dhd_pub->cmn = NULL;
  	MFREE(osh, cmn, sizeof(dhd_cmn_t));
  }
  
  static int
  dhd_dump(dhd_pub_t *dhdp, char *buf, int buflen)
  {
  	char eabuf[ETHER_ADDR_STR_LEN];
  
  	struct bcmstrbuf b;
  	struct bcmstrbuf *strbuf = &b;
  
  	bcm_binit(strbuf, buf, buflen);
  
  	/* Base DHD info */
  	bcm_bprintf(strbuf, "%s\n", dhd_version);
  	bcm_bprintf(strbuf, "\n");
  	bcm_bprintf(strbuf, "pub.up %d pub.txoff %d pub.busstate %d\n",
  	            dhdp->up, dhdp->txoff, dhdp->busstate);
  	bcm_bprintf(strbuf, "pub.hdrlen %d pub.maxctl %d pub.rxsz %d\n",
  	            dhdp->hdrlen, dhdp->maxctl, dhdp->rxsz);
  	bcm_bprintf(strbuf, "pub.iswl %d pub.drv_version %ld pub.mac %s\n",
  	            dhdp->iswl, dhdp->drv_version, bcm_ether_ntoa(&dhdp->mac, eabuf));
  	bcm_bprintf(strbuf, "pub.bcmerror %d tickcnt %d\n", dhdp->bcmerror, dhdp->tickcnt);
  
  	bcm_bprintf(strbuf, "dongle stats:\n");
  	bcm_bprintf(strbuf, "tx_packets %ld tx_bytes %ld tx_errors %ld tx_dropped %ld\n",
  	            dhdp->dstats.tx_packets, dhdp->dstats.tx_bytes,
  	            dhdp->dstats.tx_errors, dhdp->dstats.tx_dropped);
  	bcm_bprintf(strbuf, "rx_packets %ld rx_bytes %ld rx_errors %ld rx_dropped %ld\n",
  	            dhdp->dstats.rx_packets, dhdp->dstats.rx_bytes,
  	            dhdp->dstats.rx_errors, dhdp->dstats.rx_dropped);
  	bcm_bprintf(strbuf, "multicast %ld\n", dhdp->dstats.multicast);
  
  	bcm_bprintf(strbuf, "bus stats:\n");
  	bcm_bprintf(strbuf, "tx_packets %ld tx_multicast %ld tx_errors %ld\n",
  	            dhdp->tx_packets, dhdp->tx_multicast, dhdp->tx_errors);
  	bcm_bprintf(strbuf, "tx_ctlpkts %ld tx_ctlerrs %ld\n",
  	            dhdp->tx_ctlpkts, dhdp->tx_ctlerrs);
  	bcm_bprintf(strbuf, "rx_packets %ld rx_multicast %ld rx_errors %ld \n",
  	            dhdp->rx_packets, dhdp->rx_multicast, dhdp->rx_errors);
  	bcm_bprintf(strbuf, "rx_ctlpkts %ld rx_ctlerrs %ld rx_dropped %ld\n",
  	            dhdp->rx_ctlpkts, dhdp->rx_ctlerrs, dhdp->rx_dropped);
  	bcm_bprintf(strbuf, "rx_readahead_cnt %ld tx_realloc %ld\n",
  	            dhdp->rx_readahead_cnt, dhdp->tx_realloc);
  	bcm_bprintf(strbuf, "\n");
  
  	/* Add any prot info */
  	dhd_prot_dump(dhdp, strbuf);
  	bcm_bprintf(strbuf, "\n");
  
  	/* Add any bus info */
  	dhd_bus_dump(dhdp, strbuf);
  
  	return (!strbuf->size ? BCME_BUFTOOSHORT : 0);
  }
  
  int
  dhd_wl_ioctl_cmd(dhd_pub_t *dhd_pub, int cmd, void *arg, int len, uint8 set, int ifindex)
  {
  	wl_ioctl_t ioc;
  
  	ioc.cmd = cmd;
  	ioc.buf = arg;
  	ioc.len = len;
  	ioc.set = set;
  
  	return dhd_wl_ioctl(dhd_pub, ifindex, &ioc, arg, len);
  }
  
  
  int
  dhd_wl_ioctl(dhd_pub_t *dhd_pub, int ifindex, wl_ioctl_t *ioc, void *buf, int len)
  {
  	int ret;
  
  	dhd_os_proto_block(dhd_pub);
  
  	ret = dhd_prot_ioctl(dhd_pub, ifindex, ioc, buf, len);
  	if (!ret)
  		dhd_os_check_hang(dhd_pub, ifindex, ret);
  
  	dhd_os_proto_unblock(dhd_pub);
  	return ret;
  }
  
  static int
  dhd_doiovar(dhd_pub_t *dhd_pub, const bcm_iovar_t *vi, uint32 actionid, const char *name,
              void *params, int plen, void *arg, int len, int val_size)
  {
  	int bcmerror = 0;
  	int32 int_val = 0;
  
  	DHD_TRACE(("%s: Enter\n", __FUNCTION__));
  	DHD_TRACE(("%s: actionid = %d; name %s\n", __FUNCTION__, actionid, name));
  
  	if ((bcmerror = bcm_iovar_lencheck(vi, arg, len, IOV_ISSET(actionid))) != 0)
  		goto exit;
  
  	if (plen >= (int)sizeof(int_val))
  		bcopy(params, &int_val, sizeof(int_val));
  
  	switch (actionid) {
  	case IOV_GVAL(IOV_VERSION):
  		/* Need to have checked buffer length */
  		bcm_strncpy_s((char*)arg, len, dhd_version, len);
  		break;
  
  	case IOV_GVAL(IOV_MSGLEVEL):
  		int_val = (int32)dhd_msg_level;
  		bcopy(&int_val, arg, val_size);
  		break;
  
  	case IOV_SVAL(IOV_MSGLEVEL):
  		dhd_msg_level = int_val;
  		break;
  	case IOV_GVAL(IOV_BCMERRORSTR):
  		bcm_strncpy_s((char *)arg, len, bcmerrorstr(dhd_pub->bcmerror), BCME_STRLEN);
  		((char *)arg)[BCME_STRLEN - 1] = 0x00;
  		break;
  
  	case IOV_GVAL(IOV_BCMERROR):
  		int_val = (int32)dhd_pub->bcmerror;
  		bcopy(&int_val, arg, val_size);
  		break;
  
  	case IOV_GVAL(IOV_WDTICK):
  		int_val = (int32)dhd_watchdog_ms;
  		bcopy(&int_val, arg, val_size);
  		break;
  
  	case IOV_SVAL(IOV_WDTICK):
  		if (!dhd_pub->up) {
  			bcmerror = BCME_NOTUP;
  			break;
  		}
  		dhd_os_wd_timer(dhd_pub, (uint)int_val);
  		break;
  
  	case IOV_GVAL(IOV_DUMP):
  		bcmerror = dhd_dump(dhd_pub, arg, len);
  		break;
  
  #ifdef DHD_DEBUG
  	case IOV_GVAL(IOV_DCONSOLE_POLL):
  		int_val = (int32)dhd_console_ms;
  		bcopy(&int_val, arg, val_size);
  		break;
  
  	case IOV_SVAL(IOV_DCONSOLE_POLL):
  		dhd_console_ms = (uint)int_val;
  		break;
  
  	case IOV_SVAL(IOV_CONS):
  		if (len > 0)
  			bcmerror = dhd_bus_console_in(dhd_pub, arg, len - 1);
  		break;
  #endif /* DHD_DEBUG */
  
  	case IOV_SVAL(IOV_CLEARCOUNTS):
  		dhd_pub->tx_packets = dhd_pub->rx_packets = 0;
  		dhd_pub->tx_errors = dhd_pub->rx_errors = 0;
  		dhd_pub->tx_ctlpkts = dhd_pub->rx_ctlpkts = 0;
  		dhd_pub->tx_ctlerrs = dhd_pub->rx_ctlerrs = 0;
  		dhd_pub->rx_dropped = 0;
  		dhd_pub->rx_readahead_cnt = 0;
  		dhd_pub->tx_realloc = 0;
  		dhd_pub->wd_dpc_sched = 0;
  		memset(&dhd_pub->dstats, 0, sizeof(dhd_pub->dstats));
  		dhd_bus_clearcounts(dhd_pub);
  #ifdef PROP_TXSTATUS
  		/* clear proptxstatus related counters */
  		if (dhd_pub->wlfc_state) {
  			athost_wl_status_info_t *wlfc =
  			        (athost_wl_status_info_t*)dhd_pub->wlfc_state;
  			wlfc_hanger_t* hanger;
  
  			memset(&wlfc->stats, 0, sizeof(athost_wl_stat_counters_t));
  
  			hanger = (wlfc_hanger_t*)wlfc->hanger;
  			hanger->pushed = 0;
  			hanger->popped = 0;
  			hanger->failed_slotfind = 0;
  			hanger->failed_to_pop = 0;
  			hanger->failed_to_push = 0;
  		}
  #endif /* PROP_TXSTATUS */
  		break;
  
  
  	case IOV_GVAL(IOV_IOCTLTIMEOUT): {
  		int_val = (int32)dhd_os_get_ioctl_resp_timeout();
  		bcopy(&int_val, arg, sizeof(int_val));
  		break;
  	}
  
  	case IOV_SVAL(IOV_IOCTLTIMEOUT): {
  		if (int_val <= 0)
  			bcmerror = BCME_BADARG;
  		else
  			dhd_os_set_ioctl_resp_timeout((unsigned int)int_val);
  		break;
  	}
  
  	case IOV_SVAL(IOV_HCI_CMD): {
  		amp_hci_cmd_t *cmd = (amp_hci_cmd_t *)arg;
  
  		/* sanity check: command preamble present */
  		if (len < HCI_CMD_PREAMBLE_SIZE)
  			return BCME_BUFTOOSHORT;
  
  		/* sanity check: command parameters are present */
  		if (len < (int)(HCI_CMD_PREAMBLE_SIZE + cmd->plen))
  			return BCME_BUFTOOSHORT;
  
  		dhd_bta_docmd(dhd_pub, cmd, len);
  		break;
  	}
  
  	case IOV_SVAL(IOV_HCI_ACL_DATA): {
  		amp_hci_ACL_data_t *ACL_data = (amp_hci_ACL_data_t *)arg;
  
  		/* sanity check: HCI header present */
  		if (len < HCI_ACL_DATA_PREAMBLE_SIZE)
  			return BCME_BUFTOOSHORT;
  
  		/* sanity check: ACL data is present */
  		if (len < (int)(HCI_ACL_DATA_PREAMBLE_SIZE + ACL_data->dlen))
  			return BCME_BUFTOOSHORT;
  
  		dhd_bta_tx_hcidata(dhd_pub, ACL_data, len);
  		break;
  	}
  
  #ifdef PROP_TXSTATUS
  	case IOV_GVAL(IOV_PROPTXSTATUS_ENABLE):
  		int_val = dhd_pub->wlfc_enabled? 1 : 0;
  		bcopy(&int_val, arg, val_size);
  		break;
  
  	case IOV_SVAL(IOV_PROPTXSTATUS_ENABLE):
  		dhd_pub->wlfc_enabled = int_val? 1 : 0;
  		break;
  
  	case IOV_GVAL(IOV_PROPTXSTATUS_MODE): {
  		athost_wl_status_info_t *wlfc =
  		        (athost_wl_status_info_t*)dhd_pub->wlfc_state;
  		int_val = dhd_pub->wlfc_state ? (int32)wlfc->proptxstatus_mode : 0;
  		bcopy(&int_val, arg, val_size);
  		break;
  	}
  
  	case IOV_SVAL(IOV_PROPTXSTATUS_MODE):
  		if (dhd_pub->wlfc_state) {
  			athost_wl_status_info_t *wlfc =
  			        (athost_wl_status_info_t*)dhd_pub->wlfc_state;
  			wlfc->proptxstatus_mode = int_val & 0xff;
  		}
  		break;
  #endif /* PROP_TXSTATUS */
  
  	case IOV_GVAL(IOV_BUS_TYPE):
  		/* The dhd application queries the driver to check if its usb or sdio.  */
  #ifdef BCMDHDUSB
  		int_val = BUS_TYPE_USB;
  #endif
  		int_val = BUS_TYPE_SDIO;
  		bcopy(&int_val, arg, val_size);
  		break;
  
  
  #ifdef WLMEDIA_HTSF
  	case IOV_GVAL(IOV_WLPKTDLYSTAT_SZ):
  		int_val = dhd_pub->htsfdlystat_sz;
  		bcopy(&int_val, arg, val_size);
  		break;
  
  	case IOV_SVAL(IOV_WLPKTDLYSTAT_SZ):
  		dhd_pub->htsfdlystat_sz = int_val & 0xff;
  		printf("Setting tsfdlystat_sz:%d\n", dhd_pub->htsfdlystat_sz);
  		break;
  #endif
  	case IOV_SVAL(IOV_CHANGEMTU):
  		int_val &= 0xffff;
  		bcmerror = dhd_change_mtu(dhd_pub, int_val, 0);
  		break;
  
  	default:
  		bcmerror = BCME_UNSUPPORTED;
  		break;
  	}
  
  exit:
  	DHD_TRACE(("%s: actionid %d, bcmerror %d\n", __FUNCTION__, actionid, bcmerror));
  	return bcmerror;
  }
  
  /* Store the status of a connection attempt for later retrieval by an iovar */
  void
  dhd_store_conn_status(uint32 event, uint32 status, uint32 reason)
  {
  	/* Do not overwrite a WLC_E_PRUNE with a WLC_E_SET_SSID
  	 * because an encryption/rsn mismatch results in both events, and
  	 * the important information is in the WLC_E_PRUNE.
  	 */
  	if (!(event == WLC_E_SET_SSID && status == WLC_E_STATUS_FAIL &&
  	      dhd_conn_event == WLC_E_PRUNE)) {
  		dhd_conn_event = event;
  		dhd_conn_status = status;
  		dhd_conn_reason = reason;
  	}
  }
  
  bool
  dhd_prec_enq(dhd_pub_t *dhdp, struct pktq *q, void *pkt, int prec)
  {
  	void *p;
  	int eprec = -1;		/* precedence to evict from */
  	bool discard_oldest;
  
  	/* Fast case, precedence queue is not full and we are also not
  	 * exceeding total queue length
  	 */
  	if (!pktq_pfull(q, prec) && !pktq_full(q)) {
  		pktq_penq(q, prec, pkt);
  		return TRUE;
  	}
  
  	/* Determine precedence from which to evict packet, if any */
  	if (pktq_pfull(q, prec))
  		eprec = prec;
  	else if (pktq_full(q)) {
  		p = pktq_peek_tail(q, &eprec);
  		ASSERT(p);
  		if (eprec > prec || eprec < 0)
  			return FALSE;
  	}
  
  	/* Evict if needed */
  	if (eprec >= 0) {
  		/* Detect queueing to unconfigured precedence */
  		ASSERT(!pktq_pempty(q, eprec));
  		discard_oldest = AC_BITMAP_TST(dhdp->wme_dp, eprec);
  		if (eprec == prec && !discard_oldest)
  			return FALSE;		/* refuse newer (incoming) packet */
  		/* Evict packet according to discard policy */
  		p = discard_oldest ? pktq_pdeq(q, eprec) : pktq_pdeq_tail(q, eprec);
  		ASSERT(p);
  
  		PKTFREE(dhdp->osh, p, TRUE);
  	}
  
  	/* Enqueue */
  	p = pktq_penq(q, prec, pkt);
  	ASSERT(p);
  
  	return TRUE;
  }
  
  static int
  dhd_iovar_op(dhd_pub_t *dhd_pub, const char *name,
  	void *params, int plen, void *arg, int len, bool set)
  {
  	int bcmerror = 0;
  	int val_size;
  	const bcm_iovar_t *vi = NULL;
  	uint32 actionid;
  
  	DHD_TRACE(("%s: Enter\n", __FUNCTION__));
  
  	ASSERT(name);
  	ASSERT(len >= 0);
  
  	/* Get MUST have return space */
  	ASSERT(set || (arg && len));
  
  	/* Set does NOT take qualifiers */
  	ASSERT(!set || (!params && !plen));
  
  	if ((vi = bcm_iovar_lookup(dhd_iovars, name)) == NULL) {
  		bcmerror = BCME_UNSUPPORTED;
  		goto exit;
  	}
  
  	DHD_CTL(("%s: %s %s, len %d plen %d\n", __FUNCTION__,
  		name, (set ? "set" : "get"), len, plen));
  
  	/* set up 'params' pointer in case this is a set command so that
  	 * the convenience int and bool code can be common to set and get
  	 */
  	if (params == NULL) {
  		params = arg;
  		plen = len;
  	}
  
  	if (vi->type == IOVT_VOID)
  		val_size = 0;
  	else if (vi->type == IOVT_BUFFER)
  		val_size = len;
  	else
  		/* all other types are integer sized */
  		val_size = sizeof(int);
  
  	actionid = set ? IOV_SVAL(vi->varid) : IOV_GVAL(vi->varid);
  
  	bcmerror = dhd_doiovar(dhd_pub, vi, actionid, name, params, plen, arg, len, val_size);
  
  exit:
  	return bcmerror;
  }
  
  int
  dhd_ioctl(dhd_pub_t * dhd_pub, dhd_ioctl_t *ioc, void * buf, uint buflen)
  {
  	int bcmerror = 0;
  
  	DHD_TRACE(("%s: Enter\n", __FUNCTION__));
  
  	if (!buf) {
  		return BCME_BADARG;
  	}
  
  	switch (ioc->cmd) {
  	case DHD_GET_MAGIC:
  		if (buflen < sizeof(int))
  			bcmerror = BCME_BUFTOOSHORT;
  		else
  			*(int*)buf = DHD_IOCTL_MAGIC;
  		break;
  
  	case DHD_GET_VERSION:
  		if (buflen < sizeof(int))
  			bcmerror = -BCME_BUFTOOSHORT;
  		else
  			*(int*)buf = DHD_IOCTL_VERSION;
  		break;
  
  	case DHD_GET_VAR:
  	case DHD_SET_VAR: {
  		char *arg;
  		uint arglen;
  
  		/* scan past the name to any arguments */
  		for (arg = buf, arglen = buflen; *arg && arglen; arg++, arglen--)
  			;
  
  		if (*arg) {
  			bcmerror = BCME_BUFTOOSHORT;
  			break;
  		}
  
  		/* account for the NUL terminator */
  		arg++, arglen--;
  
  		/* call with the appropriate arguments */
  		if (ioc->cmd == DHD_GET_VAR)
  			bcmerror = dhd_iovar_op(dhd_pub, buf, arg, arglen,
  			buf, buflen, IOV_GET);
  		else
  			bcmerror = dhd_iovar_op(dhd_pub, buf, NULL, 0, arg, arglen, IOV_SET);
  		if (bcmerror != BCME_UNSUPPORTED)
  			break;
  
  		/* not in generic table, try protocol module */
  		if (ioc->cmd == DHD_GET_VAR)
  			bcmerror = dhd_prot_iovar_op(dhd_pub, buf, arg,
  				arglen, buf, buflen, IOV_GET);
  		else
  			bcmerror = dhd_prot_iovar_op(dhd_pub, buf,
  				NULL, 0, arg, arglen, IOV_SET);
  		if (bcmerror != BCME_UNSUPPORTED)
  			break;
  
  		/* if still not found, try bus module */
  		if (ioc->cmd == DHD_GET_VAR) {
  			bcmerror = dhd_bus_iovar_op(dhd_pub, buf,
  				arg, arglen, buf, buflen, IOV_GET);
  		} else {
  			bcmerror = dhd_bus_iovar_op(dhd_pub, buf,
  				NULL, 0, arg, arglen, IOV_SET);
  		}
  
  		break;
  	}
  
  	default:
  		bcmerror = BCME_UNSUPPORTED;
  	}
  
  	return bcmerror;
  }
  
  #ifdef SHOW_EVENTS
  static void
  wl_show_host_event(wl_event_msg_t *event, void *event_data)
  {
  	uint i, status, reason;
  	bool group = FALSE, flush_txq = FALSE, link = FALSE;
  	const char *auth_str;
  	const char *event_name;
  	uchar *buf;
  	char err_msg[256], eabuf[ETHER_ADDR_STR_LEN];
  	uint event_type, flags, auth_type, datalen;
  
  	event_type = ntoh32(event->event_type);
  	flags = ntoh16(event->flags);
  	status = ntoh32(event->status);
  	reason = ntoh32(event->reason);
  	auth_type = ntoh32(event->auth_type);
  	datalen = ntoh32(event->datalen);
  
  	/* debug dump of event messages */
  	sprintf(eabuf, "%02x:%02x:%02x:%02x:%02x:%02x",
  	        (uchar)event->addr.octet[0]&0xff,
  	        (uchar)event->addr.octet[1]&0xff,
  	        (uchar)event->addr.octet[2]&0xff,
  	        (uchar)event->addr.octet[3]&0xff,
  	        (uchar)event->addr.octet[4]&0xff,
  	        (uchar)event->addr.octet[5]&0xff);
  
  	event_name = "UNKNOWN";
  	for (i = 0; i < (uint)bcmevent_names_size; i++)
  		if (bcmevent_names[i].event == event_type)
  			event_name = bcmevent_names[i].name;
  
  	if (flags & WLC_EVENT_MSG_LINK)
  		link = TRUE;
  	if (flags & WLC_EVENT_MSG_GROUP)
  		group = TRUE;
  	if (flags & WLC_EVENT_MSG_FLUSHTXQ)
  		flush_txq = TRUE;
  
  	switch (event_type) {
  	case WLC_E_START:
  	case WLC_E_DEAUTH:
  	case WLC_E_DISASSOC:
  		DHD_EVENT(("MACEVENT: %s, MAC %s\n", event_name, eabuf));
  		break;
  
  	case WLC_E_ASSOC_IND:
  	case WLC_E_REASSOC_IND:
  
  		DHD_EVENT(("MACEVENT: %s, MAC %s\n", event_name, eabuf));
  		break;
  
  	case WLC_E_ASSOC:
  	case WLC_E_REASSOC:
  		if (status == WLC_E_STATUS_SUCCESS) {
  			DHD_EVENT(("MACEVENT: %s, MAC %s, SUCCESS\n", event_name, eabuf));
  		} else if (status == WLC_E_STATUS_TIMEOUT) {
  			DHD_EVENT(("MACEVENT: %s, MAC %s, TIMEOUT\n", event_name, eabuf));
  		} else if (status == WLC_E_STATUS_FAIL) {
  			DHD_EVENT(("MACEVENT: %s, MAC %s, FAILURE, reason %d\n",
  			       event_name, eabuf, (int)reason));
  		} else {
  			DHD_EVENT(("MACEVENT: %s, MAC %s, unexpected status %d\n",
  			       event_name, eabuf, (int)status));
  		}
  		break;
  
  	case WLC_E_DEAUTH_IND:
  	case WLC_E_DISASSOC_IND:
  		DHD_EVENT(("MACEVENT: %s, MAC %s, reason %d\n", event_name, eabuf, (int)reason));
  		break;
  
  	case WLC_E_AUTH:
  	case WLC_E_AUTH_IND:
  		if (auth_type == DOT11_OPEN_SYSTEM)
  			auth_str = "Open System";
  		else if (auth_type == DOT11_SHARED_KEY)
  			auth_str = "Shared Key";
  		else {
  			sprintf(err_msg, "AUTH unknown: %d", (int)auth_type);
  			auth_str = err_msg;
  		}
  		if (event_type == WLC_E_AUTH_IND) {
  			DHD_EVENT(("MACEVENT: %s, MAC %s, %s\n", event_name, eabuf, auth_str));
  		} else if (status == WLC_E_STATUS_SUCCESS) {
  			DHD_EVENT(("MACEVENT: %s, MAC %s, %s, SUCCESS\n",
  				event_name, eabuf, auth_str));
  		} else if (status == WLC_E_STATUS_TIMEOUT) {
  			DHD_EVENT(("MACEVENT: %s, MAC %s, %s, TIMEOUT\n",
  				event_name, eabuf, auth_str));
  		} else if (status == WLC_E_STATUS_FAIL) {
  			DHD_EVENT(("MACEVENT: %s, MAC %s, %s, FAILURE, reason %d\n",
  			       event_name, eabuf, auth_str, (int)reason));
  		}
  
  		break;
  
  	case WLC_E_JOIN:
  	case WLC_E_ROAM:
  	case WLC_E_SET_SSID:
  		if (status == WLC_E_STATUS_SUCCESS) {
  			DHD_EVENT(("MACEVENT: %s, MAC %s\n", event_name, eabuf));
  		} else if (status == WLC_E_STATUS_FAIL) {
  			DHD_EVENT(("MACEVENT: %s, failed\n", event_name));
  		} else if (status == WLC_E_STATUS_NO_NETWORKS) {
  			DHD_EVENT(("MACEVENT: %s, no networks found\n", event_name));
  		} else {
  			DHD_EVENT(("MACEVENT: %s, unexpected status %d\n",
  				event_name, (int)status));
  		}
  		break;
  
  	case WLC_E_BEACON_RX:
  		if (status == WLC_E_STATUS_SUCCESS) {
  			DHD_EVENT(("MACEVENT: %s, SUCCESS\n", event_name));
  		} else if (status == WLC_E_STATUS_FAIL) {
  			DHD_EVENT(("MACEVENT: %s, FAIL\n", event_name));
  		} else {
  			DHD_EVENT(("MACEVENT: %s, status %d\n", event_name, status));
  		}
  		break;
  
  	case WLC_E_LINK:
  		DHD_EVENT(("MACEVENT: %s %s\n", event_name, link?"UP":"DOWN"));
  		break;
  
  	case WLC_E_MIC_ERROR:
  		DHD_EVENT(("MACEVENT: %s, MAC %s, Group %d, Flush %d\n",
  		       event_name, eabuf, group, flush_txq));
  		break;
  
  	case WLC_E_ICV_ERROR:
  	case WLC_E_UNICAST_DECODE_ERROR:
  	case WLC_E_MULTICAST_DECODE_ERROR:
  		DHD_EVENT(("MACEVENT: %s, MAC %s\n",
  		       event_name, eabuf));
  		break;
  
  	case WLC_E_TXFAIL:
  		DHD_EVENT(("MACEVENT: %s, RA %s\n", event_name, eabuf));
  		break;
  
  	case WLC_E_SCAN_COMPLETE:
  	case WLC_E_PMKID_CACHE:
  		DHD_EVENT(("MACEVENT: %s\n", event_name));
  		break;
  
  	case WLC_E_PFN_NET_FOUND:
  	case WLC_E_PFN_NET_LOST:
  	case WLC_E_PFN_SCAN_COMPLETE:
  	case WLC_E_PFN_SCAN_NONE:
  	case WLC_E_PFN_SCAN_ALLGONE:
  		DHD_EVENT(("PNOEVENT: %s\n", event_name));
  		break;
  
  	case WLC_E_PSK_SUP:
  	case WLC_E_PRUNE:
  		DHD_EVENT(("MACEVENT: %s, status %d, reason %d\n",
  		           event_name, (int)status, (int)reason));
  		break;
  
  #ifdef WIFI_ACT_FRAME
  	case WLC_E_ACTION_FRAME:
  		DHD_TRACE(("MACEVENT: %s Bssid %s\n", event_name, eabuf));
  		break;
  #endif /* WIFI_ACT_FRAME */
  
  	case WLC_E_TRACE: {
  		static uint32 seqnum_prev = 0;
  		msgtrace_hdr_t hdr;
  		uint32 nblost;
  		char *s, *p;
  
  		buf = (uchar *) event_data;
  		memcpy(&hdr, buf, MSGTRACE_HDRLEN);
  
  		if (hdr.version != MSGTRACE_VERSION) {
  			printf("\nMACEVENT: %s [unsupported version --> "
  			       "dhd version:%d dongle version:%d]\n",
  			       event_name, MSGTRACE_VERSION, hdr.version);
  			/* Reset datalen to avoid display below */
  			datalen = 0;
  			break;
  		}
  
  		/* There are 2 bytes available at the end of data */
  		buf[MSGTRACE_HDRLEN + ntoh16(hdr.len)] = '\0';
  
  		if (ntoh32(hdr.discarded_bytes) || ntoh32(hdr.discarded_printf)) {
  			printf("\nWLC_E_TRACE: [Discarded traces in dongle -->"
  			       "discarded_bytes %d discarded_printf %d]\n",
  			       ntoh32(hdr.discarded_bytes), ntoh32(hdr.discarded_printf));
  		}
  
  		nblost = ntoh32(hdr.seqnum) - seqnum_prev - 1;
  		if (nblost > 0) {
  			printf("\nWLC_E_TRACE: [Event lost --> seqnum %d nblost %d\n",
  			       ntoh32(hdr.seqnum), nblost);
  		}
  		seqnum_prev = ntoh32(hdr.seqnum);
  
  		/* Display the trace buffer. Advance from \n to \n to avoid display big
  		 * printf (issue with Linux printk )
  		 */
  		p = (char *)&buf[MSGTRACE_HDRLEN];
  		while ((s = strstr(p, "\n")) != NULL) {
  			*s = '\0';
  			printf("%s\n", p);
  			p = s+1;
  		}
  		printf("%s\n", p);
  
  		/* Reset datalen to avoid display below */
  		datalen = 0;
  		break;
  	}
  
  
  	case WLC_E_RSSI:
  		DHD_EVENT(("MACEVENT: %s %d\n", event_name, ntoh32(*((int *)event_data))));
  		break;
  
  	default:
  		DHD_EVENT(("MACEVENT: %s %d, MAC %s, status %d, reason %d, auth %d\n",
  		       event_name, event_type, eabuf, (int)status, (int)reason,
  		       (int)auth_type));
  		break;
  	}
  
  	/* show any appended data */
  	if (datalen) {
  		buf = (uchar *) event_data;
  		DHD_EVENT((" data (%d) : ", datalen));
  		for (i = 0; i < datalen; i++)
  			DHD_EVENT((" 0x%02x ", *buf++));
  		DHD_EVENT(("\n"));
  	}
  }
  #endif /* SHOW_EVENTS */
  
  int
  wl_host_event(dhd_pub_t *dhd_pub, int *ifidx, void *pktdata,
                wl_event_msg_t *event, void **data_ptr)
  {
  	/* check whether packet is a BRCM event pkt */
  	bcm_event_t *pvt_data = (bcm_event_t *)pktdata;
  	uint8 *event_data;
  	uint32 type, status, reason, datalen;
  	uint16 flags;
  	int evlen;
  
  	if (bcmp(BRCM_OUI, &pvt_data->bcm_hdr.oui[0], DOT11_OUI_LEN)) {
  		DHD_ERROR(("%s: mismatched OUI, bailing\n", __FUNCTION__));
  		return (BCME_ERROR);
  	}
  
  	/* BRCM event pkt may be unaligned - use xxx_ua to load user_subtype. */
  	if (ntoh16_ua((void *)&pvt_data->bcm_hdr.usr_subtype) != BCMILCP_BCM_SUBTYPE_EVENT) {
  		DHD_ERROR(("%s: mismatched subtype, bailing\n", __FUNCTION__));
  		return (BCME_ERROR);
  	}
  
  	*data_ptr = &pvt_data[1];
  	event_data = *data_ptr;
  
  	/* memcpy since BRCM event pkt may be unaligned. */
  	memcpy(event, &pvt_data->event, sizeof(wl_event_msg_t));
  
  	type = ntoh32_ua((void *)&event->event_type);
  	flags = ntoh16_ua((void *)&event->flags);
  	status = ntoh32_ua((void *)&event->status);
  	reason = ntoh32_ua((void *)&event->reason);
  	datalen = ntoh32_ua((void *)&event->datalen);
  	evlen = datalen + sizeof(bcm_event_t);
  
  	switch (type) {
  #ifdef PROP_TXSTATUS
  	case WLC_E_FIFO_CREDIT_MAP:
  		dhd_wlfc_event(dhd_pub->info);
  		dhd_wlfc_FIFOcreditmap_event(dhd_pub->info, event_data);
  		WLFC_DBGMESG(("WLC_E_FIFO_CREDIT_MAP:(AC0,AC1,AC2,AC3),(BC_MC),(OTHER): "
  			"(%d,%d,%d,%d),(%d),(%d)\n", event_data[0], event_data[1],
  			event_data[2],
  			event_data[3], event_data[4], event_data[5]));
  		break;
  #endif
  
  	case WLC_E_IF:
  		{
  			dhd_if_event_t *ifevent = (dhd_if_event_t *)event_data;
  #ifdef PROP_TXSTATUS
  			{
  				uint8* ea = pvt_data->eth.ether_dhost;
  				WLFC_DBGMESG(("WLC_E_IF: idx:%d, action:%s, iftype:%s, "
  						"[%02x:%02x:%02x:%02x:%02x:%02x]\n",
  						ifevent->ifidx,
  						((ifevent->action == WLC_E_IF_ADD) ? "ADD":"DEL"),
  						((ifevent->is_AP == 0) ? "STA":"AP "),
  						ea[0], ea[1], ea[2], ea[3], ea[4], ea[5]));
  				(void)ea;
  
  				dhd_wlfc_interface_event(dhd_pub->info,
  					((ifevent->action == WLC_E_IF_ADD) ?
  					eWLFC_MAC_ENTRY_ACTION_ADD : eWLFC_MAC_ENTRY_ACTION_DEL),
  					ifevent->ifidx, ifevent->is_AP, ea);
  
  				/* dhd already has created an interface by default, for 0 */
  				if (ifevent->ifidx == 0)
  					break;
  			}
  #endif /* PROP_TXSTATUS */
  
  #ifdef WL_CFG80211
  			if (wl_cfg80211_is_progress_ifchange()) {
  				DHD_ERROR(("%s:  ifidx %d for %s action %d\n",
  					__FUNCTION__, ifevent->ifidx,
  					event->ifname, ifevent->action));
  				if (ifevent->action == WLC_E_IF_ADD)
  					wl_cfg80211_notify_ifchange();
  				return (BCME_OK);
  			}
  #endif /* WL_CFG80211 */
  				if (ifevent->ifidx > 0 && ifevent->ifidx < DHD_MAX_IFS) {
  					if (ifevent->action == WLC_E_IF_ADD) {
  						if (dhd_add_if(dhd_pub->info, ifevent->ifidx,
  							NULL, event->ifname,
  							event->addr.octet,
  							ifevent->flags, ifevent->bssidx)) {
  							DHD_ERROR(("%s: dhd_add_if failed!!"
  									" ifidx: %d for %s\n",
  									__FUNCTION__,
  									ifevent->ifidx,
  									event->ifname));
  							return (BCME_ERROR);
  						}
  					}
  			else
  				dhd_del_if(dhd_pub->info, ifevent->ifidx);
  		} else {
  #ifndef PROP_TXSTATUS
  			DHD_ERROR(("%s: Invalid ifidx %d for %s\n",
  			           __FUNCTION__, ifevent->ifidx, event->ifname));
  #endif /* !PROP_TXSTATUS */
  		}
  			}
  			/* send up the if event: btamp user needs it */
  			*ifidx = dhd_ifname2idx(dhd_pub->info, event->ifname);
  			/* push up to external supp/auth */
  			dhd_event(dhd_pub->info, (char *)pvt_data, evlen, *ifidx);
  			break;
  
  
  #ifdef WLMEDIA_HTSF
  	case WLC_E_HTSFSYNC:
  		htsf_update(dhd_pub->info, event_data);
  		break;
  #endif /* WLMEDIA_HTSF */
  	case WLC_E_NDIS_LINK: {
  		uint32 temp = hton32(WLC_E_LINK);
  
  		memcpy((void *)(&pvt_data->event.event_type), &temp,
  		       sizeof(pvt_data->event.event_type));
  	}
  		/* These are what external supplicant/authenticator wants */
  		/* fall through */
  	case WLC_E_LINK:
  	case WLC_E_DEAUTH:
  	case WLC_E_DEAUTH_IND:
  	case WLC_E_DISASSOC:
  	case WLC_E_DISASSOC_IND:
  		DHD_EVENT(("%s: Link event %d, flags %x, status %x\n",
  		           __FUNCTION__, type, flags, status));
  		/* fall through */
  	default:
  		*ifidx = dhd_ifname2idx(dhd_pub->info, event->ifname);
  		/* push up to external supp/auth */
  		dhd_event(dhd_pub->info, (char *)pvt_data, evlen, *ifidx);
  		DHD_TRACE(("%s: MAC event %d, flags %x, status %x\n",
  		           __FUNCTION__, type, flags, status));
  
  		/* put it back to WLC_E_NDIS_LINK */
  		if (type == WLC_E_NDIS_LINK) {
  			uint32 temp;
  
  			temp = ntoh32_ua((void *)&event->event_type);
  			DHD_TRACE(("Converted to WLC_E_LINK type %d\n", temp));
  
  			temp = ntoh32(WLC_E_NDIS_LINK);
  			memcpy((void *)(&pvt_data->event.event_type), &temp,
  			       sizeof(pvt_data->event.event_type));
  		}
  		break;
  	}
  
  #ifdef SHOW_EVENTS
  	wl_show_host_event(event, (void *)event_data);
  #endif /* SHOW_EVENTS */
  
  	return (BCME_OK);
  }
  
  void
  wl_event_to_host_order(wl_event_msg_t * evt)
  {
  	/* Event struct members passed from dongle to host are stored in network
  	 * byte order. Convert all members to host-order.
  	 */
  	evt->event_type = ntoh32(evt->event_type);
  	evt->flags = ntoh16(evt->flags);
  	evt->status = ntoh32(evt->status);
  	evt->reason = ntoh32(evt->reason);
  	evt->auth_type = ntoh32(evt->auth_type);
  	evt->datalen = ntoh32(evt->datalen);
  	evt->version = ntoh16(evt->version);
  }
  
  void
  dhd_print_buf(void *pbuf, int len, int bytes_per_line)
  {
  #ifdef DHD_DEBUG
  	int i, j = 0;
  	unsigned char *buf = pbuf;
  
  	if (bytes_per_line == 0) {
  		bytes_per_line = len;
  	}
  
  	for (i = 0; i < len; i++) {
  		printf("%2.2x", *buf++);
  		j++;
  		if (j == bytes_per_line) {
  			printf("\n");
  			j = 0;
  		} else {
  			printf(":");
  		}
  	}
  	printf("\n");
  #endif /* DHD_DEBUG */
  }
  
  #define strtoul(nptr, endptr, base) bcm_strtoul((nptr), (endptr), (base))
  
  /* Convert user's input in hex pattern to byte-size mask */
  static int
  wl_pattern_atoh(char *src, char *dst)
  {
  	int i;
  	if (strncmp(src, "0x", 2) != 0 &&
  	    strncmp(src, "0X", 2) != 0) {
  		DHD_ERROR(("Mask invalid format. Needs to start with 0x\n"));
  		return -1;
  	}
  	src = src + 2; /* Skip past 0x */
  	if (strlen(src) % 2 != 0) {
  		DHD_ERROR(("Mask invalid format. Needs to be of even length\n"));
  		return -1;
  	}
  	for (i = 0; *src != '\0'; i++) {
  		char num[3];
  		bcm_strncpy_s(num, sizeof(num), src, 2);
  		num[2] = '\0';
  		dst[i] = (uint8)strtoul(num, NULL, 16);
  		src += 2;
  	}
  	return i;
  }
  
  void
  dhd_pktfilter_offload_enable(dhd_pub_t * dhd, char *arg, int enable, int master_mode)
  {
  	char				*argv[8];
  	int					i = 0;
  	const char 			*str;
  	int					buf_len;
  	int					str_len;
  	char				*arg_save = 0, *arg_org = 0;
  	int					rc;
  	char				buf[128];
  	wl_pkt_filter_enable_t	enable_parm;
  	wl_pkt_filter_enable_t	* pkt_filterp;
  
  	if (!arg)
  		return;
  
  	if (!(arg_save = MALLOC(dhd->osh, strlen(arg) + 1))) {
  		DHD_ERROR(("%s: kmalloc failed\n", __FUNCTION__));
  		goto fail;
  	}
  	arg_org = arg_save;
  	memcpy(arg_save, arg, strlen(arg) + 1);
  
  	argv[i] = bcmstrtok(&arg_save, " ", 0);
  
  	i = 0;
  	if (argv[i] == NULL) {
  		DHD_ERROR(("No args provided\n"));
  		goto fail;
  	}
  
  	str = "pkt_filter_enable";
  	str_len = strlen(str);
  	bcm_strncpy_s(buf, sizeof(buf), str, str_len);
  	buf[str_len] = '\0';
  	buf_len = str_len + 1;
  
  	pkt_filterp = (wl_pkt_filter_enable_t *)(buf + str_len + 1);
  
  	/* Parse packet filter id. */
  	enable_parm.id = htod32(strtoul(argv[i], NULL, 0));
  
  	/* Parse enable/disable value. */
  	enable_parm.enable = htod32(enable);
  
  	buf_len += sizeof(enable_parm);
  	memcpy((char *)pkt_filterp,
  	       &enable_parm,
  	       sizeof(enable_parm));
  
  	/* Enable/disable the specified filter. */
  	rc = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, buf, buf_len, TRUE, 0);
  	rc = rc >= 0 ? 0 : rc;
  	if (rc)
  		DHD_TRACE(("%s: failed to add pktfilter %s, retcode = %d\n",
  		__FUNCTION__, arg, rc));
  	else
  		DHD_TRACE(("%s: successfully added pktfilter %s\n",
  		__FUNCTION__, arg));
  
  	/* Contorl the master mode */
  	bcm_mkiovar("pkt_filter_mode", (char *)&master_mode, 4, buf, sizeof(buf));
  	rc = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, buf, sizeof(buf), TRUE, 0);
  	rc = rc >= 0 ? 0 : rc;
  	if (rc)
  		DHD_TRACE(("%s: failed to add pktfilter %s, retcode = %d\n",
  		__FUNCTION__, arg, rc));
  
  fail:
  	if (arg_org)
  		MFREE(dhd->osh, arg_org, strlen(arg) + 1);
  }
  
  void
  dhd_pktfilter_offload_set(dhd_pub_t * dhd, char *arg)
  {
  	const char 			*str;
  	wl_pkt_filter_t		pkt_filter;
  	wl_pkt_filter_t		*pkt_filterp;
  	int					buf_len;
  	int					str_len;
  	int 				rc;
  	uint32				mask_size;
  	uint32				pattern_size;
  	char				*argv[8], * buf = 0;
  	int					i = 0;
  	char				*arg_save = 0, *arg_org = 0;
  #define BUF_SIZE		2048
  
  	if (!arg)
  		return;
  
  	if (!(arg_save = MALLOC(dhd->osh, strlen(arg) + 1))) {
  		DHD_ERROR(("%s: kmalloc failed\n", __FUNCTION__));
  		goto fail;
  	}
  
  	arg_org = arg_save;
  
  	if (!(buf = MALLOC(dhd->osh, BUF_SIZE))) {
  		DHD_ERROR(("%s: kmalloc failed\n", __FUNCTION__));
  		goto fail;
  	}
  
  	memcpy(arg_save, arg, strlen(arg) + 1);
  
  	if (strlen(arg) > BUF_SIZE) {
  		DHD_ERROR(("Not enough buffer %d < %d\n", (int)strlen(arg), (int)sizeof(buf)));
  		goto fail;
  	}
  
  	argv[i] = bcmstrtok(&arg_save, " ", 0);
  	while (argv[i++])
  		argv[i] = bcmstrtok(&arg_save, " ", 0);
  
  	i = 0;
  	if (argv[i] == NULL) {
  		DHD_ERROR(("No args provided\n"));
  		goto fail;
  	}
  
  	str = "pkt_filter_add";
  	str_len = strlen(str);
  	bcm_strncpy_s(buf, BUF_SIZE, str, str_len);
  	buf[ str_len ] = '\0';
  	buf_len = str_len + 1;
  
  	pkt_filterp = (wl_pkt_filter_t *) (buf + str_len + 1);
  
  	/* Parse packet filter id. */
  	pkt_filter.id = htod32(strtoul(argv[i], NULL, 0));
  
  	if (argv[++i] == NULL) {
  		DHD_ERROR(("Polarity not provided\n"));
  		goto fail;
  	}
  
  	/* Parse filter polarity. */
  	pkt_filter.negate_match = htod32(strtoul(argv[i], NULL, 0));
  
  	if (argv[++i] == NULL) {
  		DHD_ERROR(("Filter type not provided\n"));
  		goto fail;
  	}
  
  	/* Parse filter type. */
  	pkt_filter.type = htod32(strtoul(argv[i], NULL, 0));
  
  	if (argv[++i] == NULL) {
  		DHD_ERROR(("Offset not provided\n"));
  		goto fail;
  	}
  
  	/* Parse pattern filter offset. */
  	pkt_filter.u.pattern.offset = htod32(strtoul(argv[i], NULL, 0));
  
  	if (argv[++i] == NULL) {
  		DHD_ERROR(("Bitmask not provided\n"));
  		goto fail;
  	}
  
  	/* Parse pattern filter mask. */
  	mask_size =
  		htod32(wl_pattern_atoh(argv[i], (char *) pkt_filterp->u.pattern.mask_and_pattern));
  
  	if (argv[++i] == NULL) {
  		DHD_ERROR(("Pattern not provided\n"));
  		goto fail;
  	}
  
  	/* Parse pattern filter pattern. */
  	pattern_size =
  		htod32(wl_pattern_atoh(argv[i],
  	         (char *) &pkt_filterp->u.pattern.mask_and_pattern[mask_size]));
  
  	if (mask_size != pattern_size) {
  		DHD_ERROR(("Mask and pattern not the same size\n"));
  		goto fail;
  	}
  
  	pkt_filter.u.pattern.size_bytes = mask_size;
  	buf_len += WL_PKT_FILTER_FIXED_LEN;
  	buf_len += (WL_PKT_FILTER_PATTERN_FIXED_LEN + 2 * mask_size);
  
  	/* Keep-alive attributes are set in local	variable (keep_alive_pkt), and
  	** then memcpy'ed into buffer (keep_alive_pktp) since there is no
  	** guarantee that the buffer is properly aligned.
  	*/
  	memcpy((char *)pkt_filterp,
  	       &pkt_filter,
  	       WL_PKT_FILTER_FIXED_LEN + WL_PKT_FILTER_PATTERN_FIXED_LEN);
  
  	rc = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, buf, buf_len, TRUE, 0);
  	rc = rc >= 0 ? 0 : rc;
  
  	if (rc)
  		DHD_TRACE(("%s: failed to add pktfilter %s, retcode = %d\n",
  		__FUNCTION__, arg, rc));
  	else
  		DHD_TRACE(("%s: successfully added pktfilter %s\n",
  		__FUNCTION__, arg));
  
  fail:
  	if (arg_org)
  		MFREE(dhd->osh, arg_org, strlen(arg) + 1);
  
  	if (buf)
  		MFREE(dhd->osh, buf, BUF_SIZE);
  }
  
  /* ========================== */
  /* ==== ARP OFFLOAD SUPPORT = */
  /* ========================== */
  #ifdef ARP_OFFLOAD_SUPPORT
  void
  dhd_arp_offload_set(dhd_pub_t * dhd, int arp_mode)
  {
  	char iovbuf[32];
  	int retcode;
  
  	bcm_mkiovar("arp_ol", (char *)&arp_mode, 4, iovbuf, sizeof(iovbuf));
  	retcode = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0);
  	retcode = retcode >= 0 ? 0 : retcode;
  	if (retcode)
  		DHD_TRACE(("%s: failed to set ARP offload mode to 0x%x, retcode = %d\n",
  		__FUNCTION__, arp_mode, retcode));
  	else
  		DHD_TRACE(("%s: successfully set ARP offload mode to 0x%x\n",
  		__FUNCTION__, arp_mode));
  }
  
  void
  dhd_arp_offload_enable(dhd_pub_t * dhd, int arp_enable)
  {
  	char iovbuf[32];
  	int retcode;
  
  	bcm_mkiovar("arpoe", (char *)&arp_enable, 4, iovbuf, sizeof(iovbuf));
  	retcode = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0);
  	retcode = retcode >= 0 ? 0 : retcode;
  	if (retcode)
  		DHD_TRACE(("%s: failed to enabe ARP offload to %d, retcode = %d\n",
  		__FUNCTION__, arp_enable, retcode));
  	else
  		DHD_TRACE(("%s: successfully enabed ARP offload to %d\n",
  		__FUNCTION__, arp_enable));
  }
  
  void
  dhd_aoe_arp_clr(dhd_pub_t *dhd)
  {
  	int ret = 0;
  	int iov_len = 0;
  	char iovbuf[128];
  
  	if (dhd == NULL) return;
  
  	iov_len = bcm_mkiovar("arp_table_clear", 0, 0, iovbuf, sizeof(iovbuf));
  	if ((ret  = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, iov_len, TRUE, 0) < 0))
  		DHD_ERROR(("%s failed code %d\n", __FUNCTION__, ret));
  }
  
  void
  dhd_aoe_hostip_clr(dhd_pub_t *dhd)
  {
  	int ret = 0;
  	int iov_len = 0;
  	char iovbuf[128];
  
  	if (dhd == NULL) return;
  
  	iov_len = bcm_mkiovar("arp_hostip_clear", 0, 0, iovbuf, sizeof(iovbuf));
  	if ((ret  = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, iov_len, TRUE, 0)) < 0)
  		DHD_ERROR(("%s failed code %d\n", __FUNCTION__, ret));
  }
  
  void
  dhd_arp_offload_add_ip(dhd_pub_t *dhd, uint32 ipaddr)
  {
  	int iov_len = 0;
  	char iovbuf[32];
  	int retcode;
  
  	iov_len = bcm_mkiovar("arp_hostip", (char *)&ipaddr, 4, iovbuf, sizeof(iovbuf));
  	retcode = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, iov_len, TRUE, 0);
  
  	if (retcode)
  		DHD_TRACE(("%s: ARP ip addr add failed, retcode = %d\n",
  		__FUNCTION__, retcode));
  	else
  		DHD_TRACE(("%s: sARP H ipaddr entry added \n",
  		__FUNCTION__));
  }
  
  int
  dhd_arp_get_arp_hostip_table(dhd_pub_t *dhd, void *buf, int buflen)
  {
  	int retcode, i;
  	int iov_len = 0;
  	uint32 *ptr32 = buf;
  	bool clr_bottom = FALSE;
  
  	if (!buf)
  		return -1;
  
  	iov_len = bcm_mkiovar("arp_hostip", 0, 0, buf, buflen);
  	retcode = dhd_wl_ioctl_cmd(dhd, WLC_GET_VAR, buf, buflen, FALSE, 0);
  
  	if (retcode) {
  		DHD_TRACE(("%s: ioctl WLC_GET_VAR error %d\n",
  		__FUNCTION__, retcode));
  
  		return -1;
  	}
  
  	/* clean up the buf, ascii reminder */
  	for (i = 0; i < MAX_IPV4_ENTRIES; i++) {
  		if (!clr_bottom) {
  			if (*ptr32 == 0)
  				clr_bottom = TRUE;
  		} else {
  			*ptr32 = 0;
  		}
  		ptr32++;
  	}
  
  	return 0;
  }
  #endif /* ARP_OFFLOAD_SUPPORT  */
  
  /* send up locally generated event */
  void
  dhd_sendup_event_common(dhd_pub_t *dhdp, wl_event_msg_t *event, void *data)
  {
  	switch (ntoh32(event->event_type)) {
  	case WLC_E_BTA_HCI_EVENT:
  		break;
  	default:
  		break;
  	}
  
  	/* Call per-port handler. */
  	dhd_sendup_event(dhdp, event, data);
  }
  
  #ifdef SIMPLE_ISCAN
  
  uint iscan_thread_id = 0;
  iscan_buf_t * iscan_chain = 0;
  
  iscan_buf_t *
  dhd_iscan_allocate_buf(dhd_pub_t *dhd, iscan_buf_t **iscanbuf)
  {
  	iscan_buf_t *iscanbuf_alloc = 0;
  	iscan_buf_t *iscanbuf_head;
  
  	DHD_ISCAN(("%s: Entered\n", __FUNCTION__));
  	dhd_iscan_lock();
  
  	iscanbuf_alloc = (iscan_buf_t*)MALLOC(dhd->osh, sizeof(iscan_buf_t));
  	if (iscanbuf_alloc == NULL)
  		goto fail;
  
  	iscanbuf_alloc->next = NULL;
  	iscanbuf_head = *iscanbuf;
  
  	DHD_ISCAN(("%s: addr of allocated node = 0x%X"
  		   "addr of iscanbuf_head = 0x%X dhd = 0x%X\n",
  		   __FUNCTION__, iscanbuf_alloc, iscanbuf_head, dhd));
  
  	if (iscanbuf_head == NULL) {
  		*iscanbuf = iscanbuf_alloc;
  		DHD_ISCAN(("%s: Head is allocated\n", __FUNCTION__));
  		goto fail;
  	}
  
  	while (iscanbuf_head->next)
  		iscanbuf_head = iscanbuf_head->next;
  
  	iscanbuf_head->next = iscanbuf_alloc;
  
  fail:
  	dhd_iscan_unlock();
  	return iscanbuf_alloc;
  }
  
  void
  dhd_iscan_free_buf(void *dhdp, iscan_buf_t *iscan_delete)
  {
  	iscan_buf_t *iscanbuf_free = 0;
  	iscan_buf_t *iscanbuf_prv = 0;
  	iscan_buf_t *iscanbuf_cur;
  	dhd_pub_t *dhd = dhd_bus_pub(dhdp);
  	DHD_ISCAN(("%s: Entered\n", __FUNCTION__));
  
  	dhd_iscan_lock();
  
  	iscanbuf_cur = iscan_chain;
  
  	/* If iscan_delete is null then delete the entire
  	 * chain or else delete specific one provided
  	 */
  	if (!iscan_delete) {
  		while (iscanbuf_cur) {
  			iscanbuf_free = iscanbuf_cur;
  			iscanbuf_cur = iscanbuf_cur->next;
  			iscanbuf_free->next = 0;
  			MFREE(dhd->osh, iscanbuf_free, sizeof(iscan_buf_t));
  		}
  		iscan_chain = 0;
  	} else {
  		while (iscanbuf_cur) {
  			if (iscanbuf_cur == iscan_delete)
  				break;
  			iscanbuf_prv = iscanbuf_cur;
  			iscanbuf_cur = iscanbuf_cur->next;
  		}
  		if (iscanbuf_prv)
  			iscanbuf_prv->next = iscan_delete->next;
  
  		iscan_delete->next = 0;
  		MFREE(dhd->osh, iscan_delete, sizeof(iscan_buf_t));
  
  		if (!iscanbuf_prv)
  			iscan_chain = 0;
  	}
  	dhd_iscan_unlock();
  }
  
  iscan_buf_t *
  dhd_iscan_result_buf(void)
  {
  	return iscan_chain;
  }
  
  int
  dhd_iscan_issue_request(void * dhdp, wl_iscan_params_t *pParams, uint32 size)
  {
  	int rc = -1;
  	dhd_pub_t *dhd = dhd_bus_pub(dhdp);
  	char *buf;
  	char iovar[] = "iscan";
  	uint32 allocSize = 0;
  	wl_ioctl_t ioctl;
  
  	if (pParams) {
  		allocSize = (size + strlen(iovar) + 1);
  		if ((allocSize < size) || (allocSize < strlen(iovar)))
  		{
  			DHD_ERROR(("%s: overflow - allocation size too large %d < %d + %d!\n",
  				__FUNCTION__, allocSize, size, strlen(iovar)));
  			goto cleanUp;
  		}
  		buf = MALLOC(dhd->osh, allocSize);
  
  		if (buf == NULL)
  			{
  			DHD_ERROR(("%s: malloc of size %d failed!\n", __FUNCTION__, allocSize));
  			goto cleanUp;
  			}
  		ioctl.cmd = WLC_SET_VAR;
  		bcm_mkiovar(iovar, (char *)pParams, size, buf, allocSize);
  		rc = dhd_wl_ioctl(dhd, 0, &ioctl, buf, allocSize);
  	}
  
  cleanUp:
  	if (buf) {
  		MFREE(dhd->osh, buf, allocSize);
  	}
  
  	return rc;
  }
  
  static int
  dhd_iscan_get_partial_result(void *dhdp, uint *scan_count)
  {
  	wl_iscan_results_t *list_buf;
  	wl_iscan_results_t list;
  	wl_scan_results_t *results;
  	iscan_buf_t *iscan_cur;
  	int status = -1;
  	dhd_pub_t *dhd = dhd_bus_pub(dhdp);
  	int rc;
  	wl_ioctl_t ioctl;
  
  	DHD_ISCAN(("%s: Enter\n", __FUNCTION__));
  
  	iscan_cur = dhd_iscan_allocate_buf(dhd, &iscan_chain);
  	if (!iscan_cur) {
  		DHD_ERROR(("%s: Failed to allocate node\n", __FUNCTION__));
  		dhd_iscan_free_buf(dhdp, 0);
  		dhd_iscan_request(dhdp, WL_SCAN_ACTION_ABORT);
  		dhd_ind_scan_confirm(dhdp, FALSE);
  		goto fail;
  	}
  
  	dhd_iscan_lock();
  
  	memset(iscan_cur->iscan_buf, 0, WLC_IW_ISCAN_MAXLEN);
  	list_buf = (wl_iscan_results_t*)iscan_cur->iscan_buf;
  	results = &list_buf->results;
  	results->buflen = WL_ISCAN_RESULTS_FIXED_SIZE;
  	results->version = 0;
  	results->count = 0;
  
  	memset(&list, 0, sizeof(list));
  	list.results.buflen = htod32(WLC_IW_ISCAN_MAXLEN);
  	bcm_mkiovar("iscanresults", (char *)&list, WL_ISCAN_RESULTS_FIXED_SIZE,
  		iscan_cur->iscan_buf, WLC_IW_ISCAN_MAXLEN);
  	ioctl.cmd = WLC_GET_VAR;
  	ioctl.set = FALSE;
  	rc = dhd_wl_ioctl(dhd, 0, &ioctl, iscan_cur->iscan_buf, WLC_IW_ISCAN_MAXLEN);
  
  	results->buflen = dtoh32(results->buflen);
  	results->version = dtoh32(results->version);
  	*scan_count = results->count = dtoh32(results->count);
  	status = dtoh32(list_buf->status);
  	DHD_ISCAN(("%s: Got %d resuls status = (%x)\n", __FUNCTION__, results->count, status));
  
  	dhd_iscan_unlock();
  
  	if (!(*scan_count)) {
  		 /* TODO: race condition when FLUSH already called */
  		dhd_iscan_free_buf(dhdp, 0);
  	}
  fail:
  	return status;
  }
  
  #endif /* SIMPLE_ISCAN */
  
  /*
   * returns = TRUE if associated, FALSE if not associated
   */
  bool dhd_is_associated(dhd_pub_t *dhd, void *bss_buf)
  {
  	char bssid[6], zbuf[6];
  	int ret = -1;
  
  	bzero(bssid, 6);
  	bzero(zbuf, 6);
  
  	ret  = dhd_wl_ioctl_cmd(dhd, WLC_GET_BSSID, (char *)&bssid, ETHER_ADDR_LEN, FALSE, 0);
  	DHD_TRACE((" %s WLC_GET_BSSID ioctl res = %d\n", __FUNCTION__, ret));
  
  	if (ret == BCME_NOTASSOCIATED) {
  		DHD_TRACE(("%s: not associated! res:%d\n", __FUNCTION__, ret));
  	}
  
  	if (ret < 0)
  		return FALSE;
  
  	if ((memcmp(bssid, zbuf, ETHER_ADDR_LEN) != 0)) {
  		/*  STA is assocoated BSSID is non zero */
  
  		if (bss_buf) {
  			/* return bss if caller provided buf */
  			memcpy(bss_buf, bssid, ETHER_ADDR_LEN);
  		}
  		return TRUE;
  	} else {
  		DHD_TRACE(("%s: WLC_GET_BSSID ioctl returned zero bssid\n", __FUNCTION__));
  		return FALSE;
  	}
  }
  
  
  /* Function to estimate possible DTIM_SKIP value */
  int
  dhd_get_dtim_skip(dhd_pub_t *dhd)
  {
  	int bcn_li_dtim;
  	int ret = -1;
  	int dtim_assoc = 0;
  
  	if ((dhd->dtim_skip == 0) || (dhd->dtim_skip == 1))
  		bcn_li_dtim = 3;
  	else
  		bcn_li_dtim = dhd->dtim_skip;
  
  	/* Check if associated */
  	if (dhd_is_associated(dhd, NULL) == FALSE) {
  		DHD_TRACE(("%s NOT assoc ret %d\n", __FUNCTION__, ret));
  		goto exit;
  	}
  
  	/* if assoc grab ap's dtim value */
  	if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_GET_DTIMPRD,
  		&dtim_assoc, sizeof(dtim_assoc), FALSE, 0)) < 0) {
  		DHD_ERROR(("%s failed code %d\n", __FUNCTION__, ret));
  		goto exit;
  	}
  
  	DHD_ERROR(("%s bcn_li_dtim=%d DTIM=%d Listen=%d\n",
  		__FUNCTION__, bcn_li_dtim, dtim_assoc, LISTEN_INTERVAL));
  
  	/* if not assocated just eixt */
  	if (dtim_assoc == 0) {
  		goto exit;
  	}
  
  	/* check if sta listen interval fits into AP dtim */
  	if (dtim_assoc > LISTEN_INTERVAL) {
  		/* AP DTIM to big for our Listen Interval : no dtim skiping */
  		bcn_li_dtim = 1;
  		DHD_ERROR(("%s DTIM=%d > Listen=%d : too big ...\n",
  			__FUNCTION__, dtim_assoc, LISTEN_INTERVAL));
  		goto exit;
  	}
  
  	if ((bcn_li_dtim * dtim_assoc) > LISTEN_INTERVAL) {
  		/* Round up dtim_skip to fit into STAs Listen Interval */
  		bcn_li_dtim = (int)(LISTEN_INTERVAL / dtim_assoc);
  		DHD_TRACE(("%s agjust dtim_skip as %d\n", __FUNCTION__, bcn_li_dtim));
  	}
  
  exit:
  	return bcn_li_dtim;
  }
  
  /* Check if HostAPD or WFD mode setup */
  bool dhd_check_ap_wfd_mode_set(dhd_pub_t *dhd)
  {
  #ifdef  WL_CFG80211
  	if (((dhd->op_mode & HOSTAPD_MASK) == HOSTAPD_MASK) ||
  		((dhd->op_mode & WFD_MASK) == WFD_MASK))
  		return TRUE;
  	else
  #endif /* WL_CFG80211 */
  		return FALSE;
  }
  
  #ifdef PNO_SUPPORT
  int
  dhd_pno_clean(dhd_pub_t *dhd)
  {
  	char iovbuf[128];
  	int pfn_enabled = 0;
  	int iov_len = 0;
  	int ret;
  
  	/* Disable pfn */
  	iov_len = bcm_mkiovar("pfn", (char *)&pfn_enabled, 4, iovbuf, sizeof(iovbuf));
  	if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0)) >= 0) {
  		/* clear pfn */
  		iov_len = bcm_mkiovar("pfnclear", 0, 0, iovbuf, sizeof(iovbuf));
  		if (iov_len) {
  			if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf,
  			                            iov_len, TRUE, 0)) < 0) {
  				DHD_ERROR(("%s failed code %d\n", __FUNCTION__, ret));
  			}
  		}
  		else {
  			ret = -1;
  			DHD_ERROR(("%s failed code %d\n", __FUNCTION__, iov_len));
  		}
  	}
  	else
  		DHD_ERROR(("%s failed code %d\n", __FUNCTION__, ret));
  
  	return ret;
  }
  
  int
  dhd_pno_enable(dhd_pub_t *dhd, int pfn_enabled)
  {
  	char iovbuf[128];
  	int ret = -1;
  
  	if ((!dhd) && ((pfn_enabled != 0) || (pfn_enabled != 1))) {
  		DHD_ERROR(("%s error exit\n", __FUNCTION__));
  		return ret;
  	}
  
  	if (dhd_check_ap_wfd_mode_set(dhd) == TRUE)
  		return (ret);
  
  	memset(iovbuf, 0, sizeof(iovbuf));
  
  	if ((pfn_enabled) && (dhd_is_associated(dhd, NULL) == TRUE)) {
  		DHD_ERROR(("%s pno is NOT enable : called in assoc mode , ignore\n", __FUNCTION__));
  		return ret;
  	}
  
  	/* Enable/disable PNO */
  	if ((ret = bcm_mkiovar("pfn", (char *)&pfn_enabled, 4, iovbuf, sizeof(iovbuf))) > 0) {
  		if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR,
  			iovbuf, sizeof(iovbuf), TRUE, 0)) < 0) {
  			DHD_ERROR(("%s failed for error=%d\n", __FUNCTION__, ret));
  			return ret;
  		}
  		else {
  			dhd->pno_enable = pfn_enabled;
  			DHD_TRACE(("%s set pno as %s\n",
  				__FUNCTION__, dhd->pno_enable ? "Enable" : "Disable"));
  		}
  	}
  	else DHD_ERROR(("%s failed err=%d\n", __FUNCTION__, ret));
  
  	return ret;
  }
  
  /* Function to execute combined scan */
  int
  dhd_pno_set(dhd_pub_t *dhd, wlc_ssid_t* ssids_local, int nssid, ushort scan_fr,
  	int pno_repeat, int pno_freq_expo_max)
  {
  	int err = -1;
  	char iovbuf[128];
  	int k, i;
  	wl_pfn_param_t pfn_param;
  	wl_pfn_t	pfn_element;
  	uint len = 0;
  
  	DHD_TRACE(("%s nssid=%d nchan=%d\n", __FUNCTION__, nssid, scan_fr));
  
  	if ((!dhd) && (!ssids_local)) {
  		DHD_ERROR(("%s error exit\n", __FUNCTION__));
  		err = -1;
  		return err;
  	}
  
  	if (dhd_check_ap_wfd_mode_set(dhd) == TRUE)
  		return (err);
  
  	/* Check for broadcast ssid */
  	for (k = 0; k < nssid; k++) {
  		if (!ssids_local[k].SSID_len) {
  			DHD_ERROR(("%d: Broadcast SSID is ilegal for PNO setting\n", k));
  			return err;
  		}
  	}
  /* #define  PNO_DUMP 1 */
  #ifdef PNO_DUMP
  	{
  		int j;
  		for (j = 0; j < nssid; j++) {
  			DHD_ERROR(("%d: scan  for  %s size =%d\n", j,
  				ssids_local[j].SSID, ssids_local[j].SSID_len));
  		}
  	}
  #endif /* PNO_DUMP */
  
  	/* clean up everything */
  	if  ((err = dhd_pno_clean(dhd)) < 0) {
  		DHD_ERROR(("%s failed error=%d\n", __FUNCTION__, err));
  		return err;
  	}
  	memset(iovbuf, 0, sizeof(iovbuf));
  	memset(&pfn_param, 0, sizeof(pfn_param));
  	memset(&pfn_element, 0, sizeof(pfn_element));
  
  	/* set pfn parameters */
  	pfn_param.version = htod32(PFN_VERSION);
  	pfn_param.flags = htod16((PFN_LIST_ORDER << SORT_CRITERIA_BIT));
  
  	/* check and set extra pno params */
  	if ((pno_repeat != 0) || (pno_freq_expo_max != 0)) {
  		pfn_param.flags |= htod16(ENABLE << ENABLE_ADAPTSCAN_BIT);
  		pfn_param.repeat = (uchar) (pno_repeat);
  		pfn_param.exp = (uchar) (pno_freq_expo_max);
  	}
  	/* set up pno scan fr */
  	if (scan_fr  != 0)
  		pfn_param.scan_freq = htod32(scan_fr);
  
  	if (pfn_param.scan_freq > PNO_SCAN_MAX_FW_SEC) {
  		DHD_ERROR(("%s pno freq above %d sec\n", __FUNCTION__, PNO_SCAN_MAX_FW_SEC));
  		return err;
  	}
  	if (pfn_param.scan_freq < PNO_SCAN_MIN_FW_SEC) {
  		DHD_ERROR(("%s pno freq less %d sec\n", __FUNCTION__, PNO_SCAN_MIN_FW_SEC));
  		return err;
  	}
  
  	len = bcm_mkiovar("pfn_set", (char *)&pfn_param, sizeof(pfn_param), iovbuf, sizeof(iovbuf));
  	if ((err = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, len, TRUE, 0)) < 0) {
  				DHD_ERROR(("%s pfn_set failed for error=%d\n",
  					__FUNCTION__, err));
  				return err;
  	}
  
  	/* set all pfn ssid */
  	for (i = 0; i < nssid; i++) {
  
  		pfn_element.infra = htod32(DOT11_BSSTYPE_INFRASTRUCTURE);
  		pfn_element.auth = (DOT11_OPEN_SYSTEM);
  		pfn_element.wpa_auth = htod32(WPA_AUTH_PFN_ANY);
  		pfn_element.wsec = htod32(0);
  		pfn_element.infra = htod32(1);
  		pfn_element.flags = htod32(ENABLE << WL_PFN_HIDDEN_BIT);
  		memcpy((char *)pfn_element.ssid.SSID, ssids_local[i].SSID, ssids_local[i].SSID_len);
  		pfn_element.ssid.SSID_len = ssids_local[i].SSID_len;
  
  		if ((len =
  		bcm_mkiovar("pfn_add", (char *)&pfn_element,
  			sizeof(pfn_element), iovbuf, sizeof(iovbuf))) > 0) {
  			if ((err =
  			dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, len, TRUE, 0)) < 0) {
  				DHD_ERROR(("%s failed for i=%d error=%d\n",
  					__FUNCTION__, i, err));
  				return err;
  			}
  			else
  				DHD_TRACE(("%s set OK with PNO time=%d repeat=%d max_adjust=%d\n",
  					__FUNCTION__, pfn_param.scan_freq,
  					pfn_param.repeat, pfn_param.exp));
  		}
  		else DHD_ERROR(("%s failed err=%d\n", __FUNCTION__, err));
  	}
  
  	/* Enable PNO */
  	/* dhd_pno_enable(dhd, 1); */
  	return err;
  }
  
  int
  dhd_pno_get_status(dhd_pub_t *dhd)
  {
  	int ret = -1;
  
  	if (!dhd)
  		return ret;
  	else
  		return (dhd->pno_enable);
  }
  
  #endif /* PNO_SUPPORT */
  
  #if defined(KEEP_ALIVE)
  int dhd_keep_alive_onoff(dhd_pub_t *dhd)
  {
  	char 				buf[256];
  	const char 			*str;
  	wl_mkeep_alive_pkt_t	mkeep_alive_pkt;
  	wl_mkeep_alive_pkt_t	*mkeep_alive_pktp;
  	int					buf_len;
  	int					str_len;
  	int res 				= -1;
  
  	if (dhd_check_ap_wfd_mode_set(dhd) == TRUE)
  		return (res);
  
  	DHD_TRACE(("%s execution\n", __FUNCTION__));
  
  	str = "mkeep_alive";
  	str_len = strlen(str);
  	strncpy(buf, str, str_len);
  	buf[ str_len ] = '\0';
  	mkeep_alive_pktp = (wl_mkeep_alive_pkt_t *) (buf + str_len + 1);
  	mkeep_alive_pkt.period_msec = KEEP_ALIVE_PERIOD;
  	buf_len = str_len + 1;
  	mkeep_alive_pkt.version = htod16(WL_MKEEP_ALIVE_VERSION);
  	mkeep_alive_pkt.length = htod16(WL_MKEEP_ALIVE_FIXED_LEN);
  	/* Setup keep alive zero for null packet generation */
  	mkeep_alive_pkt.keep_alive_id = 0;
  	mkeep_alive_pkt.len_bytes = 0;
  	buf_len += WL_MKEEP_ALIVE_FIXED_LEN;
  	/* Keep-alive attributes are set in local variable (mkeep_alive_pkt), and
  	 * then memcpy'ed into buffer (mkeep_alive_pktp) since there is no
  	 * guarantee that the buffer is properly aligned.
  	 */
  	memcpy((char *)mkeep_alive_pktp, &mkeep_alive_pkt, WL_MKEEP_ALIVE_FIXED_LEN);
  
  	res = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, buf, buf_len, TRUE, 0);
  
  	return res;
  }
  #endif /* defined(KEEP_ALIVE) */
  /* Android ComboSCAN support */
  
  /*
   *  data parsing from ComboScan tlv list
  */
  int
  wl_iw_parse_data_tlv(char** list_str, void *dst, int dst_size, const char token,
                       int input_size, int *bytes_left)
  {
  	char* str = *list_str;
  	uint16 short_temp;
  	uint32 int_temp;
  
  	if ((list_str == NULL) || (*list_str == NULL) ||(bytes_left == NULL) || (*bytes_left < 0)) {
  		DHD_ERROR(("%s error paramters\n", __FUNCTION__));
  		return -1;
  	}
  
  	/* Clean all dest bytes */
  	memset(dst, 0, dst_size);
  	while (*bytes_left > 0) {
  
  		if (str[0] != token) {
  			DHD_TRACE(("%s NOT Type=%d get=%d left_parse=%d \n",
  				__FUNCTION__, token, str[0], *bytes_left));
  			return -1;
  		}
  
  		*bytes_left -= 1;
  		str += 1;
  
  		if (input_size == 1) {
  			memcpy(dst, str, input_size);
  		}
  		else if (input_size == 2) {
  			memcpy(dst, (char *)htod16(memcpy(&short_temp, str, input_size)),
  				input_size);
  		}
  		else if (input_size == 4) {
  			memcpy(dst, (char *)htod32(memcpy(&int_temp, str, input_size)),
  				input_size);
  		}
  
  		*bytes_left -= input_size;
  		str += input_size;
  		*list_str = str;
  		return 1;
  	}
  	return 1;
  }
  
  /*
   *  channel list parsing from cscan tlv list
  */
  int
  wl_iw_parse_channel_list_tlv(char** list_str, uint16* channel_list,
                               int channel_num, int *bytes_left)
  {
  	char* str = *list_str;
  	int idx = 0;
  
  	if ((list_str == NULL) || (*list_str == NULL) ||(bytes_left == NULL) || (*bytes_left < 0)) {
  		DHD_ERROR(("%s error paramters\n", __FUNCTION__));
  		return -1;
  	}
  
  	while (*bytes_left > 0) {
  
  		if (str[0] != CSCAN_TLV_TYPE_CHANNEL_IE) {
  			*list_str = str;
  			DHD_TRACE(("End channel=%d left_parse=%d %d\n", idx, *bytes_left, str[0]));
  			return idx;
  		}
  		/* Get proper CSCAN_TLV_TYPE_CHANNEL_IE */
  		*bytes_left -= 1;
  		str += 1;
  
  		if (str[0] == 0) {
  			/* All channels */
  			channel_list[idx] = 0x0;
  		}
  		else {
  			channel_list[idx] = (uint16)str[0];
  			DHD_TRACE(("%s channel=%d \n", __FUNCTION__,  channel_list[idx]));
  		}
  		*bytes_left -= 1;
  		str += 1;
  
  		if (idx++ > 255) {
  			DHD_ERROR(("%s Too many channels \n", __FUNCTION__));
  			return -1;
  		}
  	}
  
  	*list_str = str;
  	return idx;
  }
  
  /*
   *  SSIDs list parsing from cscan tlv list
   */
  int
  wl_iw_parse_ssid_list_tlv(char** list_str, wlc_ssid_t* ssid, int max, int *bytes_left)
  {
  	char* str;
  	int idx = 0;
  
  	if ((list_str == NULL) || (*list_str == NULL) || (*bytes_left < 0)) {
  		DHD_ERROR(("%s error paramters\n", __FUNCTION__));
  		return -1;
  	}
  	str = *list_str;
  	while (*bytes_left > 0) {
  
  		if (str[0] != CSCAN_TLV_TYPE_SSID_IE) {
  			*list_str = str;
  			DHD_TRACE(("nssid=%d left_parse=%d %d\n", idx, *bytes_left, str[0]));
  			return idx;
  		}
  
  		/* Get proper CSCAN_TLV_TYPE_SSID_IE */
  		*bytes_left -= 1;
  		str += 1;
  
  		if (str[0] == 0) {
  			/* Broadcast SSID */
  			ssid[idx].SSID_len = 0;
  			memset((char*)ssid[idx].SSID, 0x0, DOT11_MAX_SSID_LEN);
  			*bytes_left -= 1;
  			str += 1;
  
  			DHD_TRACE(("BROADCAST SCAN  left=%d\n", *bytes_left));
  		}
  		else if (str[0] <= DOT11_MAX_SSID_LEN) {
  			/* Get proper SSID size */
  			ssid[idx].SSID_len = str[0];
  			*bytes_left -= 1;
  			str += 1;
  
  			/* Get SSID */
  			if (ssid[idx].SSID_len > *bytes_left) {
  				DHD_ERROR(("%s out of memory range len=%d but left=%d\n",
  				__FUNCTION__, ssid[idx].SSID_len, *bytes_left));
  				return -1;
  			}
  
  			memcpy((char*)ssid[idx].SSID, str, ssid[idx].SSID_len);
  
  			*bytes_left -= ssid[idx].SSID_len;
  			str += ssid[idx].SSID_len;
  
  			DHD_TRACE(("%s :size=%d left=%d\n",
  				(char*)ssid[idx].SSID, ssid[idx].SSID_len, *bytes_left));
  		}
  		else {
  			DHD_ERROR(("### SSID size more that %d\n", str[0]));
  			return -1;
  		}
  
  		if (idx++ >  max) {
  			DHD_ERROR(("%s number of SSIDs more that %d\n", __FUNCTION__, idx));
  			return -1;
  		}
  	}
  
  	*list_str = str;
  	return idx;
  }
  
  /* Parse a comma-separated list from list_str into ssid array, starting
   * at index idx.  Max specifies size of the ssid array.  Parses ssids
   * and returns updated idx; if idx >= max not all fit, the excess have
   * not been copied.  Returns -1 on empty string, or on ssid too long.
   */
  int
  wl_iw_parse_ssid_list(char** list_str, wlc_ssid_t* ssid, int idx, int max)
  {
  	char* str, *ptr;
  
  	if ((list_str == NULL) || (*list_str == NULL))
  		return -1;
  
  	for (str = *list_str; str != NULL; str = ptr) {
  
  		/* check for next TAG */
  		if (!strncmp(str, GET_CHANNEL, strlen(GET_CHANNEL))) {
  			*list_str	 = str + strlen(GET_CHANNEL);
  			return idx;
  		}
  
  		if ((ptr = strchr(str, ',')) != NULL) {
  			*ptr++ = '\0';
  		}
  
  		if (strlen(str) > DOT11_MAX_SSID_LEN) {
  			DHD_ERROR(("ssid <%s> exceeds %d\n", str, DOT11_MAX_SSID_LEN));
  			return -1;
  		}
  
  		if (strlen(str) == 0)
  			ssid[idx].SSID_len = 0;
  
  		if (idx < max) {
  			bcm_strcpy_s((char*)ssid[idx].SSID, sizeof(ssid[idx].SSID), str);
  			ssid[idx].SSID_len = strlen(str);
  		}
  		idx++;
  	}
  	return idx;
  }
  
  /*
   * Parse channel list from iwpriv CSCAN
   */
  int
  wl_iw_parse_channel_list(char** list_str, uint16* channel_list, int channel_num)
  {
  	int num;
  	int val;
  	char* str;
  	char* endptr = NULL;
  
  	if ((list_str == NULL)||(*list_str == NULL))
  		return -1;
  
  	str = *list_str;
  	num = 0;
  	while (strncmp(str, GET_NPROBE, strlen(GET_NPROBE))) {
  		val = (int)strtoul(str, &endptr, 0);
  		if (endptr == str) {
  			printf("could not parse channel number starting at"
  				" substring \"%s\" in list:\n%s\n",
  				str, *list_str);
  			return -1;
  		}
  		str = endptr + strspn(endptr, " ,");
  
  		if (num == channel_num) {
  			DHD_ERROR(("too many channels (more than %d) in channel list:\n%s\n",
  				channel_num, *list_str));
  			return -1;
  		}
  
  		channel_list[num++] = (uint16)val;
  	}
  	*list_str = str;
  	return num;
  }
  