text: /*
   * Implement cfg80211 ("iw") support.
   *
   * Copyright (C) 2009 M&N Solutions GmbH, 61191 Rosbach, Germany
   * Holger Schurig <hs4233@mail.mn-solutions.de>
   *
   */
  
  #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  
  #include <linux/hardirq.h>
  #include <linux/sched.h>
  #include <linux/wait.h>
  #include <linux/slab.h>
  #include <linux/ieee80211.h>
  #include <net/cfg80211.h>
  #include <asm/unaligned.h>
  
  #include "decl.h"
  #include "cfg.h"
  #include "cmd.h"
  #include "mesh.h"
  
  
  #define CHAN2G(_channel, _freq, _flags) {        \
  	.band             = IEEE80211_BAND_2GHZ, \
  	.center_freq      = (_freq),             \
  	.hw_value         = (_channel),          \
  	.flags            = (_flags),            \
  	.max_antenna_gain = 0,                   \
  	.max_power        = 30,                  \
  }
  
  static struct ieee80211_channel lbs_2ghz_channels[] = {
  	CHAN2G(1,  2412, 0),
  	CHAN2G(2,  2417, 0),
  	CHAN2G(3,  2422, 0),
  	CHAN2G(4,  2427, 0),
  	CHAN2G(5,  2432, 0),
  	CHAN2G(6,  2437, 0),
  	CHAN2G(7,  2442, 0),
  	CHAN2G(8,  2447, 0),
  	CHAN2G(9,  2452, 0),
  	CHAN2G(10, 2457, 0),
  	CHAN2G(11, 2462, 0),
  	CHAN2G(12, 2467, 0),
  	CHAN2G(13, 2472, 0),
  	CHAN2G(14, 2484, 0),
  };
  
  #define RATETAB_ENT(_rate, _hw_value, _flags) { \
  	.bitrate  = (_rate),                    \
  	.hw_value = (_hw_value),                \
  	.flags    = (_flags),                   \
  }
  
  
  /* Table 6 in section 3.2.1.1 */
  static struct ieee80211_rate lbs_rates[] = {
  	RATETAB_ENT(10,  0,  0),
  	RATETAB_ENT(20,  1,  0),
  	RATETAB_ENT(55,  2,  0),
  	RATETAB_ENT(110, 3,  0),
  	RATETAB_ENT(60,  9,  0),
  	RATETAB_ENT(90,  6,  0),
  	RATETAB_ENT(120, 7,  0),
  	RATETAB_ENT(180, 8,  0),
  	RATETAB_ENT(240, 9,  0),
  	RATETAB_ENT(360, 10, 0),
  	RATETAB_ENT(480, 11, 0),
  	RATETAB_ENT(540, 12, 0),
  };
  
  static struct ieee80211_supported_band lbs_band_2ghz = {
  	.channels = lbs_2ghz_channels,
  	.n_channels = ARRAY_SIZE(lbs_2ghz_channels),
  	.bitrates = lbs_rates,
  	.n_bitrates = ARRAY_SIZE(lbs_rates),
  };
  
  
  static const u32 cipher_suites[] = {
  	WLAN_CIPHER_SUITE_WEP40,
  	WLAN_CIPHER_SUITE_WEP104,
  	WLAN_CIPHER_SUITE_TKIP,
  	WLAN_CIPHER_SUITE_CCMP,
  };
  
  /* Time to stay on the channel */
  #define LBS_DWELL_PASSIVE 100
  #define LBS_DWELL_ACTIVE  40
  
  
  /***************************************************************************
   * Misc utility functions
   *
   * TLVs are Marvell specific. They are very similar to IEs, they have the
   * same structure: type, length, data*. The only difference: for IEs, the
   * type and length are u8, but for TLVs they're __le16.
   */
  
  /*
   * Convert NL80211's auth_type to the one from Libertas, see chapter 5.9.1
   * in the firmware spec
   */
  static u8 lbs_auth_to_authtype(enum nl80211_auth_type auth_type)
  {
  	int ret = -ENOTSUPP;
  
  	switch (auth_type) {
  	case NL80211_AUTHTYPE_OPEN_SYSTEM:
  	case NL80211_AUTHTYPE_SHARED_KEY:
  		ret = auth_type;
  		break;
  	case NL80211_AUTHTYPE_AUTOMATIC:
  		ret = NL80211_AUTHTYPE_OPEN_SYSTEM;
  		break;
  	case NL80211_AUTHTYPE_NETWORK_EAP:
  		ret = 0x80;
  		break;
  	default:
  		/* silence compiler */
  		break;
  	}
  	return ret;
  }
  
  
  /*
   * Various firmware commands need the list of supported rates, but with
   * the hight-bit set for basic rates
   */
  static int lbs_add_rates(u8 *rates)
  {
  	size_t i;
  
  	for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
  		u8 rate = lbs_rates[i].bitrate / 5;
  		if (rate == 0x02 || rate == 0x04 ||
  		    rate == 0x0b || rate == 0x16)
  			rate |= 0x80;
  		rates[i] = rate;
  	}
  	return ARRAY_SIZE(lbs_rates);
  }
  
  
  /***************************************************************************
   * TLV utility functions
   *
   * TLVs are Marvell specific. They are very similar to IEs, they have the
   * same structure: type, length, data*. The only difference: for IEs, the
   * type and length are u8, but for TLVs they're __le16.
   */
  
  
  /*
   * Add ssid TLV
   */
  #define LBS_MAX_SSID_TLV_SIZE			\
  	(sizeof(struct mrvl_ie_header)		\
  	 + IEEE80211_MAX_SSID_LEN)
  
  static int lbs_add_ssid_tlv(u8 *tlv, const u8 *ssid, int ssid_len)
  {
  	struct mrvl_ie_ssid_param_set *ssid_tlv = (void *)tlv;
  
  	/*
  	 * TLV-ID SSID  00 00
  	 * length       06 00
  	 * ssid         4d 4e 54 45 53 54
  	 */
  	ssid_tlv->header.type = cpu_to_le16(TLV_TYPE_SSID);
  	ssid_tlv->header.len = cpu_to_le16(ssid_len);
  	memcpy(ssid_tlv->ssid, ssid, ssid_len);
  	return sizeof(ssid_tlv->header) + ssid_len;
  }
  
  
  /*
   * Add channel list TLV (section 8.4.2)
   *
   * Actual channel data comes from priv->wdev->wiphy->channels.
   */
  #define LBS_MAX_CHANNEL_LIST_TLV_SIZE					\
  	(sizeof(struct mrvl_ie_header)					\
  	 + (LBS_SCAN_BEFORE_NAP * sizeof(struct chanscanparamset)))
  
  static int lbs_add_channel_list_tlv(struct lbs_private *priv, u8 *tlv,
  				    int last_channel, int active_scan)
  {
  	int chanscanparamsize = sizeof(struct chanscanparamset) *
  		(last_channel - priv->scan_channel);
  
  	struct mrvl_ie_header *header = (void *) tlv;
  
  	/*
  	 * TLV-ID CHANLIST  01 01
  	 * length           0e 00
  	 * channel          00 01 00 00 00 64 00
  	 *   radio type     00
  	 *   channel           01
  	 *   scan type            00
  	 *   min scan time           00 00
  	 *   max scan time                 64 00
  	 * channel 2        00 02 00 00 00 64 00
  	 *
  	 */
  
  	header->type = cpu_to_le16(TLV_TYPE_CHANLIST);
  	header->len  = cpu_to_le16(chanscanparamsize);
  	tlv += sizeof(struct mrvl_ie_header);
  
  	/* lbs_deb_scan("scan: channels %d to %d\n", priv->scan_channel,
  		     last_channel); */
  	memset(tlv, 0, chanscanparamsize);
  
  	while (priv->scan_channel < last_channel) {
  		struct chanscanparamset *param = (void *) tlv;
  
  		param->radiotype = CMD_SCAN_RADIO_TYPE_BG;
  		param->channumber =
  			priv->scan_req->channels[priv->scan_channel]->hw_value;
  		if (active_scan) {
  			param->maxscantime = cpu_to_le16(LBS_DWELL_ACTIVE);
  		} else {
  			param->chanscanmode.passivescan = 1;
  			param->maxscantime = cpu_to_le16(LBS_DWELL_PASSIVE);
  		}
  		tlv += sizeof(struct chanscanparamset);
  		priv->scan_channel++;
  	}
  	return sizeof(struct mrvl_ie_header) + chanscanparamsize;
  }
  
  
  /*
   * Add rates TLV
   *
   * The rates are in lbs_bg_rates[], but for the 802.11b
   * rates the high bit is set. We add this TLV only because
   * there's a firmware which otherwise doesn't report all
   * APs in range.
   */
  #define LBS_MAX_RATES_TLV_SIZE			\
  	(sizeof(struct mrvl_ie_header)		\
  	 + (ARRAY_SIZE(lbs_rates)))
  
  /* Adds a TLV with all rates the hardware supports */
  static int lbs_add_supported_rates_tlv(u8 *tlv)
  {
  	size_t i;
  	struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
  
  	/*
  	 * TLV-ID RATES  01 00
  	 * length        0e 00
  	 * rates         82 84 8b 96 0c 12 18 24 30 48 60 6c
  	 */
  	rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
  	tlv += sizeof(rate_tlv->header);
  	i = lbs_add_rates(tlv);
  	tlv += i;
  	rate_tlv->header.len = cpu_to_le16(i);
  	return sizeof(rate_tlv->header) + i;
  }
  
  /* Add common rates from a TLV and return the new end of the TLV */
  static u8 *
  add_ie_rates(u8 *tlv, const u8 *ie, int *nrates)
  {
  	int hw, ap, ap_max = ie[1];
  	u8 hw_rate;
  
  	/* Advance past IE header */
  	ie += 2;
  
  	lbs_deb_hex(LBS_DEB_ASSOC, "AP IE Rates", (u8 *) ie, ap_max);
  
  	for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
  		hw_rate = lbs_rates[hw].bitrate / 5;
  		for (ap = 0; ap < ap_max; ap++) {
  			if (hw_rate == (ie[ap] & 0x7f)) {
  				*tlv++ = ie[ap];
  				*nrates = *nrates + 1;
  			}
  		}
  	}
  	return tlv;
  }
  
  /*
   * Adds a TLV with all rates the hardware *and* BSS supports.
   */
  static int lbs_add_common_rates_tlv(u8 *tlv, struct cfg80211_bss *bss)
  {
  	struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
  	const u8 *rates_eid, *ext_rates_eid;
  	int n = 0;
  
  	rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
  	ext_rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_EXT_SUPP_RATES);
  
  	/*
  	 * 01 00                   TLV_TYPE_RATES
  	 * 04 00                   len
  	 * 82 84 8b 96             rates
  	 */
  	rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
  	tlv += sizeof(rate_tlv->header);
  
  	/* Add basic rates */
  	if (rates_eid) {
  		tlv = add_ie_rates(tlv, rates_eid, &n);
  
  		/* Add extended rates, if any */
  		if (ext_rates_eid)
  			tlv = add_ie_rates(tlv, ext_rates_eid, &n);
  	} else {
  		lbs_deb_assoc("assoc: bss had no basic rate IE\n");
  		/* Fallback: add basic 802.11b rates */
  		*tlv++ = 0x82;
  		*tlv++ = 0x84;
  		*tlv++ = 0x8b;
  		*tlv++ = 0x96;
  		n = 4;
  	}
  
  	rate_tlv->header.len = cpu_to_le16(n);
  	return sizeof(rate_tlv->header) + n;
  }
  
  
  /*
   * Add auth type TLV.
   *
   * This is only needed for newer firmware (V9 and up).
   */
  #define LBS_MAX_AUTH_TYPE_TLV_SIZE \
  	sizeof(struct mrvl_ie_auth_type)
  
  static int lbs_add_auth_type_tlv(u8 *tlv, enum nl80211_auth_type auth_type)
  {
  	struct mrvl_ie_auth_type *auth = (void *) tlv;
  
  	/*
  	 * 1f 01  TLV_TYPE_AUTH_TYPE
  	 * 01 00  len
  	 * 01     auth type
  	 */
  	auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
  	auth->header.len = cpu_to_le16(sizeof(*auth)-sizeof(auth->header));
  	auth->auth = cpu_to_le16(lbs_auth_to_authtype(auth_type));
  	return sizeof(*auth);
  }
  
  
  /*
   * Add channel (phy ds) TLV
   */
  #define LBS_MAX_CHANNEL_TLV_SIZE \
  	sizeof(struct mrvl_ie_header)
  
  static int lbs_add_channel_tlv(u8 *tlv, u8 channel)
  {
  	struct mrvl_ie_ds_param_set *ds = (void *) tlv;
  
  	/*
  	 * 03 00  TLV_TYPE_PHY_DS
  	 * 01 00  len
  	 * 06     channel
  	 */
  	ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
  	ds->header.len = cpu_to_le16(sizeof(*ds)-sizeof(ds->header));
  	ds->channel = channel;
  	return sizeof(*ds);
  }
  
  
  /*
   * Add (empty) CF param TLV of the form:
   */
  #define LBS_MAX_CF_PARAM_TLV_SIZE		\
  	sizeof(struct mrvl_ie_header)
  
  static int lbs_add_cf_param_tlv(u8 *tlv)
  {
  	struct mrvl_ie_cf_param_set *cf = (void *)tlv;
  
  	/*
  	 * 04 00  TLV_TYPE_CF
  	 * 06 00  len
  	 * 00     cfpcnt
  	 * 00     cfpperiod
  	 * 00 00  cfpmaxduration
  	 * 00 00  cfpdurationremaining
  	 */
  	cf->header.type = cpu_to_le16(TLV_TYPE_CF);
  	cf->header.len = cpu_to_le16(sizeof(*cf)-sizeof(cf->header));
  	return sizeof(*cf);
  }
  
  /*
   * Add WPA TLV
   */
  #define LBS_MAX_WPA_TLV_SIZE			\
  	(sizeof(struct mrvl_ie_header)		\
  	 + 128 /* TODO: I guessed the size */)
  
  static int lbs_add_wpa_tlv(u8 *tlv, const u8 *ie, u8 ie_len)
  {
  	size_t tlv_len;
  
  	/*
  	 * We need just convert an IE to an TLV. IEs use u8 for the header,
  	 *   u8      type
  	 *   u8      len
  	 *   u8[]    data
  	 * but TLVs use __le16 instead:
  	 *   __le16  type
  	 *   __le16  len
  	 *   u8[]    data
  	 */
  	*tlv++ = *ie++;
  	*tlv++ = 0;
  	tlv_len = *tlv++ = *ie++;
  	*tlv++ = 0;
  	while (tlv_len--)
  		*tlv++ = *ie++;
  	/* the TLV is two bytes larger than the IE */
  	return ie_len + 2;
  }
  
  /*
   * Set Channel
   */
  
  static int lbs_cfg_set_channel(struct wiphy *wiphy,
  	struct net_device *netdev,
  	struct ieee80211_channel *channel,
  	enum nl80211_channel_type channel_type)
  {
  	struct lbs_private *priv = wiphy_priv(wiphy);
  	int ret = -ENOTSUPP;
  
  	lbs_deb_enter_args(LBS_DEB_CFG80211, "iface %s freq %d, type %d",
  			   netdev_name(netdev), channel->center_freq, channel_type);
  
  	if (channel_type != NL80211_CHAN_NO_HT)
  		goto out;
  
  	if (netdev == priv->mesh_dev)
  		ret = lbs_mesh_set_channel(priv, channel->hw_value);
  	else
  		ret = lbs_set_channel(priv, channel->hw_value);
  
   out:
  	lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
  	return ret;
  }
  
  
  
  /*
   * Scanning
   */
  
  /*
   * When scanning, the firmware doesn't send a nul packet with the power-safe
   * bit to the AP. So we cannot stay away from our current channel too long,
   * otherwise we loose data. So take a "nap" while scanning every other
   * while.
   */
  #define LBS_SCAN_BEFORE_NAP 4
  
  
  /*
   * When the firmware reports back a scan-result, it gives us an "u8 rssi",
   * which isn't really an RSSI, as it becomes larger when moving away from
   * the AP. Anyway, we need to convert that into mBm.
   */
  #define LBS_SCAN_RSSI_TO_MBM(rssi) \
  	((-(int)rssi + 3)*100)
  
  static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy,
  	struct cmd_header *resp)
  {
  	struct cfg80211_bss *bss;
  	struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
  	int bsssize;
  	const u8 *pos;
  	const u8 *tsfdesc;
  	int tsfsize;
  	int i;
  	int ret = -EILSEQ;
  
  	lbs_deb_enter(LBS_DEB_CFG80211);
  
  	bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
  
  	lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
  			scanresp->nr_sets, bsssize, le16_to_cpu(resp->size));
  
  	if (scanresp->nr_sets == 0) {
  		ret = 0;
  		goto done;
  	}
  
  	/*
  	 * The general layout of the scan response is described in chapter
  	 * 5.7.1. Basically we have a common part, then any number of BSS
  	 * descriptor sections. Finally we have section with the same number
  	 * of TSFs.
  	 *
  	 * cmd_ds_802_11_scan_rsp
  	 *   cmd_header
  	 *   pos_size
  	 *   nr_sets
  	 *   bssdesc 1
  	 *     bssid
  	 *     rssi
  	 *     timestamp
  	 *     intvl
  	 *     capa
  	 *     IEs
  	 *   bssdesc 2
  	 *   bssdesc n
  	 *   MrvlIEtypes_TsfFimestamp_t
  	 *     TSF for BSS 1
  	 *     TSF for BSS 2
  	 *     TSF for BSS n
  	 */
  
  	pos = scanresp->bssdesc_and_tlvbuffer;
  
  	lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer,
  			scanresp->bssdescriptsize);
  
  	tsfdesc = pos + bsssize;
  	tsfsize = 4 + 8 * scanresp->nr_sets;
  	lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize);
  
  	/* Validity check: we expect a Marvell-Local TLV */
  	i = get_unaligned_le16(tsfdesc);
  	tsfdesc += 2;
  	if (i != TLV_TYPE_TSFTIMESTAMP) {
  		lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i);
  		goto done;
  	}
  
  	/*
  	 * Validity check: the TLV holds TSF values with 8 bytes each, so
  	 * the size in the TLV must match the nr_sets value
  	 */
  	i = get_unaligned_le16(tsfdesc);
  	tsfdesc += 2;
  	if (i / 8 != scanresp->nr_sets) {
  		lbs_deb_scan("scan response: invalid number of TSF timestamp "
  			     "sets (expected %d got %d)\n", scanresp->nr_sets,
  			     i / 8);
  		goto done;
  	}
  
  	for (i = 0; i < scanresp->nr_sets; i++) {
  		const u8 *bssid;
  		const u8 *ie;
  		int left;
  		int ielen;
  		int rssi;
  		u16 intvl;
  		u16 capa;
  		int chan_no = -1;
  		const u8 *ssid = NULL;
  		u8 ssid_len = 0;
  		DECLARE_SSID_BUF(ssid_buf);
  
  		int len = get_unaligned_le16(pos);
  		pos += 2;
  
  		/* BSSID */
  		bssid = pos;
  		pos += ETH_ALEN;
  		/* RSSI */
  		rssi = *pos++;
  		/* Packet time stamp */
  		pos += 8;
  		/* Beacon interval */
  		intvl = get_unaligned_le16(pos);
  		pos += 2;
  		/* Capabilities */
  		capa = get_unaligned_le16(pos);
  		pos += 2;
  
  		/* To find out the channel, we must parse the IEs */
  		ie = pos;
  		/*
  		 * 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
  		 * interval, capabilities
  		 */
  		ielen = left = len - (6 + 1 + 8 + 2 + 2);
  		while (left >= 2) {
  			u8 id, elen;
  			id = *pos++;
  			elen = *pos++;
  			left -= 2;
  			if (elen > left || elen == 0) {
  				lbs_deb_scan("scan response: invalid IE fmt\n");
  				goto done;
  			}
  
  			if (id == WLAN_EID_DS_PARAMS)
  				chan_no = *pos;
  			if (id == WLAN_EID_SSID) {
  				ssid = pos;
  				ssid_len = elen;
  			}
  			left -= elen;
  			pos += elen;
  		}
  
  		/* No channel, no luck */
  		if (chan_no != -1) {
  			struct wiphy *wiphy = priv->wdev->wiphy;
  			int freq = ieee80211_channel_to_frequency(chan_no,
  							IEEE80211_BAND_2GHZ);
  			struct ieee80211_channel *channel =
  				ieee80211_get_channel(wiphy, freq);
  
  			lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %s, "
  				     "%d dBm\n",
  				     bssid, capa, chan_no,
  				     print_ssid(ssid_buf, ssid, ssid_len),
  				     LBS_SCAN_RSSI_TO_MBM(rssi)/100);
  
  			if (channel &&
  			    !(channel->flags & IEEE80211_CHAN_DISABLED)) {
  				bss = cfg80211_inform_bss(wiphy, channel,
  					bssid, get_unaligned_le64(tsfdesc),
  					capa, intvl, ie, ielen,
  					LBS_SCAN_RSSI_TO_MBM(rssi),
  					GFP_KERNEL);
  				cfg80211_put_bss(bss);
  			}
  		} else
  			lbs_deb_scan("scan response: missing BSS channel IE\n");
  
  		tsfdesc += 8;
  	}
  	ret = 0;
  
   done:
  	lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret);
  	return ret;
  }
  
  
  /*
   * Our scan command contains a TLV, consting of a SSID TLV, a channel list
   * TLV and a rates TLV. Determine the maximum size of them:
   */
  #define LBS_SCAN_MAX_CMD_SIZE			\
  	(sizeof(struct cmd_ds_802_11_scan)	\
  	 + LBS_MAX_SSID_TLV_SIZE		\
  	 + LBS_MAX_CHANNEL_LIST_TLV_SIZE	\
  	 + LBS_MAX_RATES_TLV_SIZE)
  
  /*
   * Assumes priv->scan_req is initialized and valid
   * Assumes priv->scan_channel is initialized
   */
  static void lbs_scan_worker(struct work_struct *work)
  {
  	struct lbs_private *priv =
  		container_of(work, struct lbs_private, scan_work.work);
  	struct cmd_ds_802_11_scan *scan_cmd;
  	u8 *tlv; /* pointer into our current, growing TLV storage area */
  	int last_channel;
  	int running, carrier;
  
  	lbs_deb_enter(LBS_DEB_SCAN);
  
  	scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
  	if (scan_cmd == NULL)
  		goto out_no_scan_cmd;
  
  	/* prepare fixed part of scan command */
  	scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
  
  	/* stop network while we're away from our main channel */
  	running = !netif_queue_stopped(priv->dev);
  	carrier = netif_carrier_ok(priv->dev);
  	if (running)
  		netif_stop_queue(priv->dev);
  	if (carrier)
  		netif_carrier_off(priv->dev);
  
  	/* prepare fixed part of scan command */
  	tlv = scan_cmd->tlvbuffer;
  
  	/* add SSID TLV */
  	if (priv->scan_req->n_ssids && priv->scan_req->ssids[0].ssid_len > 0)
  		tlv += lbs_add_ssid_tlv(tlv,
  					priv->scan_req->ssids[0].ssid,
  					priv->scan_req->ssids[0].ssid_len);
  
  	/* add channel TLVs */
  	last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
  	if (last_channel > priv->scan_req->n_channels)
  		last_channel = priv->scan_req->n_channels;
  	tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
  		priv->scan_req->n_ssids);
  
  	/* add rates TLV */
  	tlv += lbs_add_supported_rates_tlv(tlv);
  
  	if (priv->scan_channel < priv->scan_req->n_channels) {
  		cancel_delayed_work(&priv->scan_work);
  		if (netif_running(priv->dev))
  			queue_delayed_work(priv->work_thread, &priv->scan_work,
  				msecs_to_jiffies(300));
  	}
  
  	/* This is the final data we are about to send */
  	scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
  	lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
  		    sizeof(*scan_cmd));
  	lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
  		    tlv - scan_cmd->tlvbuffer);
  
  	__lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
  		le16_to_cpu(scan_cmd->hdr.size),
  		lbs_ret_scan, 0);
  
  	if (priv->scan_channel >= priv->scan_req->n_channels)
  		/* Mark scan done */
  		lbs_scan_done(priv);
  
  	/* Restart network */
  	if (carrier)
  		netif_carrier_on(priv->dev);
  	if (running && !priv->tx_pending_len)
  		netif_wake_queue(priv->dev);
  
  	kfree(scan_cmd);
  
  	/* Wake up anything waiting on scan completion */
  	if (priv->scan_req == NULL) {
  		lbs_deb_scan("scan: waking up waiters\n");
  		wake_up_all(&priv->scan_q);
  	}
  
   out_no_scan_cmd:
  	lbs_deb_leave(LBS_DEB_SCAN);
  }
  
  static void _internal_start_scan(struct lbs_private *priv, bool internal,
  	struct cfg80211_scan_request *request)
  {
  	lbs_deb_enter(LBS_DEB_CFG80211);
  
  	lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n",
  		request->n_ssids, request->n_channels, request->ie_len);
  
  	priv->scan_channel = 0;
  	queue_delayed_work(priv->work_thread, &priv->scan_work,
  		msecs_to_jiffies(50));
  
  	priv->scan_req = request;
  	priv->internal_scan = internal;
  
  	lbs_deb_leave(LBS_DEB_CFG80211);
  }
  
  /*
   * Clean up priv->scan_req.  Should be used to handle the allocation details.
   */
  void lbs_scan_done(struct lbs_private *priv)
  {
  	WARN_ON(!priv->scan_req);
  
  	if (priv->internal_scan)
  		kfree(priv->scan_req);
  	else
  		cfg80211_scan_done(priv->scan_req, false);
  
  	priv->scan_req = NULL;
  }
  
  static int lbs_cfg_scan(struct wiphy *wiphy,
  	struct net_device *dev,
  	struct cfg80211_scan_request *request)
  {
  	struct lbs_private *priv = wiphy_priv(wiphy);
  	int ret = 0;
  
  	lbs_deb_enter(LBS_DEB_CFG80211);
  
  	if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
  		/* old scan request not yet processed */
  		ret = -EAGAIN;
  		goto out;
  	}
  
  	_internal_start_scan(priv, false, request);
  
  	if (priv->surpriseremoved)
  		ret = -EIO;
  
   out:
  	lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
  	return ret;
  }
  
  
  
  
  /*
   * Events
   */
  
  void lbs_send_disconnect_notification(struct lbs_private *priv)
  {
  	lbs_deb_enter(LBS_DEB_CFG80211);
  
  	cfg80211_disconnected(priv->dev,
  		0,
  		NULL, 0,
  		GFP_KERNEL);
  
  	lbs_deb_leave(LBS_DEB_CFG80211);
  }
  
  void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
  {
  	lbs_deb_enter(LBS_DEB_CFG80211);
  
  	cfg80211_michael_mic_failure(priv->dev,
  		priv->assoc_bss,
  		event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
  			NL80211_KEYTYPE_GROUP :
  			NL80211_KEYTYPE_PAIRWISE,
  		-1,
  		NULL,
  		GFP_KERNEL);
  
  	lbs_deb_leave(LBS_DEB_CFG80211);
  }
  
  
  
  
  /*
   * Connect/disconnect
   */
  
  
  /*
   * This removes all WEP keys
   */
  static int lbs_remove_wep_keys(struct lbs_private *priv)
  {
  	struct cmd_ds_802_11_set_wep cmd;
  	int ret;
  
  	lbs_deb_enter(LBS_DEB_CFG80211);
  
  	memset(&cmd, 0, sizeof(cmd));
  	cmd.hdr.size = cpu_to_le16(sizeof(cmd));
  	cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
  	cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
  
  	ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
  
  	lbs_deb_leave(LBS_DEB_CFG80211);
  	return ret;
  }
  
  /*
   * Set WEP keys
   */
  static int lbs_set_wep_keys(struct lbs_private *priv)
  {
  	struct cmd_ds_802_11_set_wep cmd;
  	int i;
  	int ret;
  
  	lbs_deb_enter(LBS_DEB_CFG80211);
  
  	/*
  	 * command         13 00
  	 * size            50 00
  	 * sequence        xx xx
  	 * result          00 00
  	 * action          02 00     ACT_ADD
  	 * transmit key    00 00
  	 * type for key 1  01        WEP40
  	 * type for key 2  00
  	 * type for key 3  00
  	 * type for key 4  00
  	 * key 1           39 39 39 39 39 00 00 00
  	 *                 00 00 00 00 00 00 00 00
  	 * key 2           00 00 00 00 00 00 00 00
  	 *                 00 00 00 00 00 00 00 00
  	 * key 3           00 00 00 00 00 00 00 00
  	 *                 00 00 00 00 00 00 00 00
  	 * key 4           00 00 00 00 00 00 00 00
  	 */
  	if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
  	    priv->wep_key_len[2] || priv->wep_key_len[3]) {
  		/* Only set wep keys if we have at least one of them */
  		memset(&cmd, 0, sizeof(cmd));
  		cmd.hdr.size = cpu_to_le16(sizeof(cmd));
  		cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
  		cmd.action = cpu_to_le16(CMD_ACT_ADD);
  
  		for (i = 0; i < 4; i++) {
  			switch (priv->wep_key_len[i]) {
  			case WLAN_KEY_LEN_WEP40:
  				cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
  				break;
  			case WLAN_KEY_LEN_WEP104:
  				cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
  				break;
  			default:
  				cmd.keytype[i] = 0;
  				break;
  			}
  			memcpy(cmd.keymaterial[i], priv->wep_key[i],
  			       priv->wep_key_len[i]);
  		}
  
  		ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
  	} else {
  		/* Otherwise remove all wep keys */
  		ret = lbs_remove_wep_keys(priv);
  	}
  
  	lbs_deb_leave(LBS_DEB_CFG80211);
  	return ret;
  }
  
  
  /*
   * Enable/Disable RSN status
   */
  static int lbs_enable_rsn(struct lbs_private *priv, int enable)
  {
  	struct cmd_ds_802_11_enable_rsn cmd;
  	int ret;
  
  	lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", enable);
  
  	/*
  	 * cmd       2f 00
  	 * size      0c 00
  	 * sequence  xx xx
  	 * result    00 00
  	 * action    01 00    ACT_SET
  	 * enable    01 00
  	 */
  	memset(&cmd, 0, sizeof(cmd));
  	cmd.hdr.size = cpu_to_le16(sizeof(cmd));
  	cmd.action = cpu_to_le16(CMD_ACT_SET);
  	cmd.enable = cpu_to_le16(enable);
  
  	ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
  
  	lbs_deb_leave(LBS_DEB_CFG80211);
  	return ret;
  }
  
  
  /*
   * Set WPA/WPA key material
   */
  
  /*
   * like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
   * get rid of WEXT, this should go into host.h
   */
  
  struct cmd_key_material {
  	struct cmd_header hdr;
  
  	__le16 action;
  	struct MrvlIEtype_keyParamSet param;
  } __packed;
  
  static int lbs_set_key_material(struct lbs_private *priv,
  				int key_type,
  				int key_info,
  				u8 *key, u16 key_len)
  {
  	struct cmd_key_material cmd;
  	int ret;
  
  	lbs_deb_enter(LBS_DEB_CFG80211);
  
  	/*
  	 * Example for WPA (TKIP):
  	 *
  	 * cmd       5e 00
  	 * size      34 00
  	 * sequence  xx xx
  	 * result    00 00
  	 * action    01 00
  	 * TLV type  00 01    key param
  	 * length    00 26
  	 * key type  01 00    TKIP
  	 * key info  06 00    UNICAST | ENABLED
  	 * key len   20 00
  	 * key       32 bytes
  	 */
  	memset(&cmd, 0, sizeof(cmd));
  	cmd.hdr.size = cpu_to_le16(sizeof(cmd));
  	cmd.action = cpu_to_le16(CMD_ACT_SET);
  	cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
  	cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
  	cmd.param.keytypeid = cpu_to_le16(key_type);
  	cmd.param.keyinfo = cpu_to_le16(key_info);
  	cmd.param.keylen = cpu_to_le16(key_len);
  	if (key && key_len)
  		memcpy(cmd.param.key, key, key_len);
  
  	ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
  
  	lbs_deb_leave(LBS_DEB_CFG80211);
  	return ret;
  }
  
  
  /*
   * Sets the auth type (open, shared, etc) in the firmware. That
   * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
   * command doesn't send an authentication frame at all, it just
   * stores the auth_type.
   */
  static int lbs_set_authtype(struct lbs_private *priv,
  			    struct cfg80211_connect_params *sme)
  {
  	struct cmd_ds_802_11_authenticate cmd;
  	int ret;
  
  	lbs_deb_enter_args(LBS_DEB_CFG80211, "%d", sme->auth_type);
  
  	/*
  	 * cmd        11 00
  	 * size       19 00
  	 * sequence   xx xx
  	 * result     00 00
  	 * BSS id     00 13 19 80 da 30
  	 * auth type  00
  	 * reserved   00 00 00 00 00 00 00 00 00 00
  	 */
  	memset(&cmd, 0, sizeof(cmd));
  	cmd.hdr.size = cpu_to_le16(sizeof(cmd));
  	if (sme->bssid)
  		memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
  	/* convert auth_type */
  	ret = lbs_auth_to_authtype(sme->auth_type);
  	if (ret < 0)
  		goto done;
  
  	cmd.authtype = ret;
  	ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
  
   done:
  	lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
  	return ret;
  }
  
  
  /*
   * Create association request
   */
  #define LBS_ASSOC_MAX_CMD_SIZE                     \
  	(sizeof(struct cmd_ds_802_11_associate)    \
  	 - 512 /* cmd_ds_802_11_associate.iebuf */ \
  	 + LBS_MAX_SSID_TLV_SIZE                   \
  	 + LBS_MAX_CHANNEL_TLV_SIZE                \
  	 + LBS_MAX_CF_PARAM_TLV_SIZE               \
  	 + LBS_MAX_AUTH_TYPE_TLV_SIZE              \
  	 + LBS_MAX_WPA_TLV_SIZE)
  
  static int lbs_associate(struct lbs_private *priv,
  		struct cfg80211_bss *bss,
  		struct cfg80211_connect_params *sme)
  {
  	struct cmd_ds_802_11_associate_response *resp;
  	struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
  						      GFP_KERNEL);
  	const u8 *ssid_eid;
  	size_t len, resp_ie_len;
  	int status;
  	int ret;
  	u8 *pos = &(cmd->iebuf[0]);
  	u8 *tmp;
  
  	lbs_deb_enter(LBS_DEB_CFG80211);
  
  	if (!cmd) {
  		ret = -ENOMEM;
  		goto done;
  	}
  
  	/*
  	 * cmd              50 00
  	 * length           34 00
  	 * sequence         xx xx
  	 * result           00 00
  	 * BSS id           00 13 19 80 da 30
  	 * capabilities     11 00
  	 * listen interval  0a 00
  	 * beacon interval  00 00
  	 * DTIM period      00
  	 * TLVs             xx   (up to 512 bytes)
  	 */
  	cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
  
  	/* Fill in static fields */
  	memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
  	cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
  	cmd->capability = cpu_to_le16(bss->capability);
  
  	/* add SSID TLV */
  	ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
  	if (ssid_eid)
  		pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
  	else
  		lbs_deb_assoc("no SSID\n");
  
  	/* add DS param TLV */
  	if (bss->channel)
  		pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
  	else
  		lbs_deb_assoc("no channel\n");
  
  	/* add (empty) CF param TLV */
  	pos += lbs_add_cf_param_tlv(pos);
  
  	/* add rates TLV */
  	tmp = pos + 4; /* skip Marvell IE header */
  	pos += lbs_add_common_rates_tlv(pos, bss);
  	lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
  
  	/* add auth type TLV */
  	if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
  		pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
  
  	/* add WPA/WPA2 TLV */
  	if (sme->ie && sme->ie_len)
  		pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
  
  	len = (sizeof(*cmd) - sizeof(cmd->iebuf)) +
  		(u16)(pos - (u8 *) &cmd->iebuf);
  	cmd->hdr.size = cpu_to_le16(len);
  
  	lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
  			le16_to_cpu(cmd->hdr.size));
  
  	/* store for later use */
  	memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
  
  	ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
  	if (ret)
  		goto done;
  
  	/* generate connect message to cfg80211 */
  
  	resp = (void *) cmd; /* recast for easier field access */
  	status = le16_to_cpu(resp->statuscode);
  
  	/* Older FW versions map the IEEE 802.11 Status Code in the association
  	 * response to the following values returned in resp->statuscode:
  	 *
  	 *    IEEE Status Code                Marvell Status Code
  	 *    0                       ->      0x0000 ASSOC_RESULT_SUCCESS
  	 *    13                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
  	 *    14                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
  	 *    15                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
  	 *    16                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
  	 *    others                  ->      0x0003 ASSOC_RESULT_REFUSED
  	 *
  	 * Other response codes:
  	 *    0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
  	 *    0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
  	 *                                    association response from the AP)
  	 */
  	if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
  		switch (status) {
  		case 0:
  			break;
  		case 1:
  			lbs_deb_assoc("invalid association parameters\n");
  			status = WLAN_STATUS_CAPS_UNSUPPORTED;
  			break;
  		case 2:
  			lbs_deb_assoc("timer expired while waiting for AP\n");
  			status = WLAN_STATUS_AUTH_TIMEOUT;
  			break;
  		case 3:
  			lbs_deb_assoc("association refused by AP\n");
  			status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
  			break;
  		case 4:
  			lbs_deb_assoc("authentication refused by AP\n");
  			status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
  			break;
  		default:
  			lbs_deb_assoc("association failure %d\n", status);
  			/* v5 OLPC firmware does return the AP status code if
  			 * it's not one of the values above.  Let that through.
  			 */
  			break;
  		}
  	}
  
  	lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
  		      "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
  		      le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
  
  	resp_ie_len = le16_to_cpu(resp->hdr.size)
  		- sizeof(resp->hdr)
  		- 6;
  	cfg80211_connect_result(priv->dev,
  				priv->assoc_bss,
  				sme->ie, sme->ie_len,
  				resp->iebuf, resp_ie_len,
  				status,
  				GFP_KERNEL);
  
  	if (status == 0) {
  		/* TODO: get rid of priv->connect_status */
  		priv->connect_status = LBS_CONNECTED;
  		netif_carrier_on(priv->dev);
  		if (!priv->tx_pending_len)
  			netif_tx_wake_all_queues(priv->dev);
  	}
  
  done:
  	lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
  	return ret;
  }
  
  static struct cfg80211_scan_request *
  _new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
  {
  	struct cfg80211_scan_request *creq = NULL;
  	int i, n_channels = 0;
  	enum ieee80211_band band;
  
  	for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
  		if (wiphy->bands[band])
  			n_channels += wiphy->bands[band]->n_channels;
  	}
  
  	creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
  		       n_channels * sizeof(void *),
  		       GFP_ATOMIC);
  	if (!creq)
  		return NULL;
  
  	/* SSIDs come after channels */
  	creq->ssids = (void *)&creq->channels[n_channels];
  	creq->n_channels = n_channels;
  	creq->n_ssids = 1;
  
  	/* Scan all available channels */
  	i = 0;
  	for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
  		int j;
  
  		if (!wiphy->bands[band])
  			continue;
  
  		for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
  			/* ignore disabled channels */
  			if (wiphy->bands[band]->channels[j].flags &
  						IEEE80211_CHAN_DISABLED)
  				continue;
  
  			creq->channels[i] = &wiphy->bands[band]->channels[j];
  			i++;
  		}
  	}
  	if (i) {
  		/* Set real number of channels specified in creq->channels[] */
  		creq->n_channels = i;
  
  		/* Scan for the SSID we're going to connect to */
  		memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
  		creq->ssids[0].ssid_len = sme->ssid_len;
  	} else {
  		/* No channels found... */
  		kfree(creq);
  		creq = NULL;
  	}
  
  	return creq;
  }
  
  static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
  			   struct cfg80211_connect_params *sme)
  {
  	struct lbs_private *priv = wiphy_priv(wiphy);
  	struct cfg80211_bss *bss = NULL;
  	int ret = 0;
  	u8 preamble = RADIO_PREAMBLE_SHORT;
  
  	if (dev == priv->mesh_dev)
  		return -EOPNOTSUPP;
  
  	lbs_deb_enter(LBS_DEB_CFG80211);
  
  	if (!sme->bssid) {
  		struct cfg80211_scan_request *creq;
  
  		/*
  		 * Scan for the requested network after waiting for existing
  		 * scans to finish.
  		 */
  		lbs_deb_assoc("assoc: waiting for existing scans\n");
  		wait_event_interruptible_timeout(priv->scan_q,
  						 (priv->scan_req == NULL),
  						 (15 * HZ));
  
  		creq = _new_connect_scan_req(wiphy, sme);
  		if (!creq) {
  			ret = -EINVAL;
  			goto done;
  		}
  
  		lbs_deb_assoc("assoc: scanning for compatible AP\n");
  		_internal_start_scan(priv, true, creq);
  
  		lbs_deb_assoc("assoc: waiting for scan to complete\n");
  		wait_event_interruptible_timeout(priv->scan_q,
  						 (priv->scan_req == NULL),
  						 (15 * HZ));
  		lbs_deb_assoc("assoc: scanning competed\n");
  	}
  
  	/* Find the BSS we want using available scan results */
  	bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
  		sme->ssid, sme->ssid_len,
  		WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
  	if (!bss) {
  		wiphy_err(wiphy, "assoc: bss %pM not in scan results\n",
  			  sme->bssid);
  		ret = -ENOENT;
  		goto done;
  	}
  	lbs_deb_assoc("trying %pM\n", bss->bssid);
  	lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
  		      sme->crypto.cipher_group,
  		      sme->key_idx, sme->key_len);
  
  	/* As this is a new connection, clear locally stored WEP keys */
  	priv->wep_tx_key = 0;
  	memset(priv->wep_key, 0, sizeof(priv->wep_key));
  	memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
  
  	/* set/remove WEP keys */
  	switch (sme->crypto.cipher_group) {
  	case WLAN_CIPHER_SUITE_WEP40:
  	case WLAN_CIPHER_SUITE_WEP104:
  		/* Store provided WEP keys in priv-> */
  		priv->wep_tx_key = sme->key_idx;
  		priv->wep_key_len[sme->key_idx] = sme->key_len;
  		memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
  		/* Set WEP keys and WEP mode */
  		lbs_set_wep_keys(priv);
  		priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
  		lbs_set_mac_control(priv);
  		/* No RSN mode for WEP */
  		lbs_enable_rsn(priv, 0);
  		break;
  	case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
  		/*
  		 * If we don't have no WEP, no WPA and no WPA2,
  		 * we remove all keys like in the WPA/WPA2 setup,
  		 * we just don't set RSN.
  		 *
  		 * Therefore: fall-through
  		 */
  	case WLAN_CIPHER_SUITE_TKIP:
  	case WLAN_CIPHER_SUITE_CCMP:
  		/* Remove WEP keys and WEP mode */
  		lbs_remove_wep_keys(priv);
  		priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
  		lbs_set_mac_control(priv);
  
  		/* clear the WPA/WPA2 keys */
  		lbs_set_key_material(priv,
  			KEY_TYPE_ID_WEP, /* doesn't matter */
  			KEY_INFO_WPA_UNICAST,
  			NULL, 0);
  		lbs_set_key_material(priv,
  			KEY_TYPE_ID_WEP, /* doesn't matter */
  			KEY_INFO_WPA_MCAST,
  			NULL, 0);
  		/* RSN mode for WPA/WPA2 */
  		lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
  		break;
  	default:
  		wiphy_err(wiphy, "unsupported cipher group 0x%x\n",
  			  sme->crypto.cipher_group);
  		ret = -ENOTSUPP;
  		goto done;
  	}
  
  	lbs_set_authtype(priv, sme);
  	lbs_set_radio(priv, preamble, 1);
  
  	/* Do the actual association */
  	ret = lbs_associate(priv, bss, sme);
  
   done:
  	if (bss)
  		cfg80211_put_bss(bss);
  	lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
  	return ret;
  }
  
  int lbs_disconnect(struct lbs_private *priv, u16 reason)
  {
  	struct cmd_ds_802_11_deauthenticate cmd;
  	int ret;
  
  	memset(&cmd, 0, sizeof(cmd));
  	cmd.hdr.size = cpu_to_le16(sizeof(cmd));
  	/* Mildly ugly to use a locally store my own BSSID ... */
  	memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
  	cmd.reasoncode = cpu_to_le16(reason);
  
  	ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd);
  	if (ret)
  		return ret;
  
  	cfg80211_disconnected(priv->dev,
  			reason,
  			NULL, 0,
  			GFP_KERNEL);
  	priv->connect_status = LBS_DISCONNECTED;
  
  	return 0;
  }
  
  static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
  	u16 reason_code)
  {
  	struct lbs_private *priv = wiphy_priv(wiphy);
  
  	if (dev == priv->mesh_dev)
  		return -EOPNOTSUPP;
  
  	lbs_deb_enter_args(LBS_DEB_CFG80211, "reason_code %d", reason_code);
  
  	/* store for lbs_cfg_ret_disconnect() */
  	priv->disassoc_reason = reason_code;
  
  	return lbs_disconnect(priv, reason_code);
  }
  
  static int lbs_cfg_set_default_key(struct wiphy *wiphy,
  				   struct net_device *netdev,
  				   u8 key_index, bool unicast,
  				   bool multicast)
  {
  	struct lbs_private *priv = wiphy_priv(wiphy);
  
  	if (netdev == priv->mesh_dev)
  		return -EOPNOTSUPP;
  
  	lbs_deb_enter(LBS_DEB_CFG80211);
  
  	if (key_index != priv->wep_tx_key) {
  		lbs_deb_assoc("set_default_key: to %d\n", key_index);
  		priv->wep_tx_key = key_index;
  		lbs_set_wep_keys(priv);
  	}
  
  	return 0;
  }
  
  
  static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
  			   u8 idx, bool pairwise, const u8 *mac_addr,
  			   struct key_params *params)
  {
  	struct lbs_private *priv = wiphy_priv(wiphy);
  	u16 key_info;
  	u16 key_type;
  	int ret = 0;
  
  	if (netdev == priv->mesh_dev)
  		return -EOPNOTSUPP;
  
  	lbs_deb_enter(LBS_DEB_CFG80211);
  
  	lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
  		      params->cipher, mac_addr);
  	lbs_deb_assoc("add_key: key index %d, key len %d\n",
  		      idx, params->key_len);
  	if (params->key_len)
  		lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
  			    params->key, params->key_len);
  
  	lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
  	if (params->seq_len)
  		lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
  			    params->seq, params->seq_len);
  
  	switch (params->cipher) {
  	case WLAN_CIPHER_SUITE_WEP40:
  	case WLAN_CIPHER_SUITE_WEP104:
  		/* actually compare if something has changed ... */
  		if ((priv->wep_key_len[idx] != params->key_len) ||
  			memcmp(priv->wep_key[idx],
  			       params->key, params->key_len) != 0) {
  			priv->wep_key_len[idx] = params->key_len;
  			memcpy(priv->wep_key[idx],
  			       params->key, params->key_len);
  			lbs_set_wep_keys(priv);
  		}
  		break;
  	case WLAN_CIPHER_SUITE_TKIP:
  	case WLAN_CIPHER_SUITE_CCMP:
  		key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
  						   ? KEY_INFO_WPA_UNICAST
  						   : KEY_INFO_WPA_MCAST);
  		key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
  			? KEY_TYPE_ID_TKIP
  			: KEY_TYPE_ID_AES;
  		lbs_set_key_material(priv,
  				     key_type,
  				     key_info,
  				     params->key, params->key_len);
  		break;
  	default:
  		wiphy_err(wiphy, "unhandled cipher 0x%x\n", params->cipher);
  		ret = -ENOTSUPP;
  		break;
  	}
  
  	return ret;
  }
  
  
  static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
  			   u8 key_index, bool pairwise, const u8 *mac_addr)
  {
  
  	lbs_deb_enter(LBS_DEB_CFG80211);
  
  	lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
  		      key_index, mac_addr);
  
  #ifdef TODO
  	struct lbs_private *priv = wiphy_priv(wiphy);
  	/*
  	 * I think can keep this a NO-OP, because:
  
  	 * - we clear all keys whenever we do lbs_cfg_connect() anyway
  	 * - neither "iw" nor "wpa_supplicant" won't call this during
  	 *   an ongoing connection
  	 * - TODO: but I have to check if this is still true when
  	 *   I set the AP to periodic re-keying
  	 * - we've not kzallec() something when we've added a key at
  	 *   lbs_cfg_connect() or lbs_cfg_add_key().
  	 *
  	 * This causes lbs_cfg_del_key() only called at disconnect time,
  	 * where we'd just waste time deleting a key that is not going
  	 * to be used anyway.
  	 */
  	if (key_index < 3 && priv->wep_key_len[key_index]) {
  		priv->wep_key_len[key_index] = 0;
  		lbs_set_wep_keys(priv);
  	}
  #endif
  
  	return 0;
  }
  
  
  /*
   * Get station
   */
  
  static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
  			      u8 *mac, struct station_info *sinfo)
  {
  	struct lbs_private *priv = wiphy_priv(wiphy);
  	s8 signal, noise;
  	int ret;
  	size_t i;
  
  	lbs_deb_enter(LBS_DEB_CFG80211);
  
  	sinfo->filled |= STATION_INFO_TX_BYTES |
  			 STATION_INFO_TX_PACKETS |
  			 STATION_INFO_RX_BYTES |
  			 STATION_INFO_RX_PACKETS;
  	sinfo->tx_bytes = priv->dev->stats.tx_bytes;
  	sinfo->tx_packets = priv->dev->stats.tx_packets;
  	sinfo->rx_bytes = priv->dev->stats.rx_bytes;
  	sinfo->rx_packets = priv->dev->stats.rx_packets;
  
  	/* Get current RSSI */
  	ret = lbs_get_rssi(priv, &signal, &noise);
  	if (ret == 0) {
  		sinfo->signal = signal;
  		sinfo->filled |= STATION_INFO_SIGNAL;
  	}
  
  	/* Convert priv->cur_rate from hw_value to NL80211 value */
  	for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
  		if (priv->cur_rate == lbs_rates[i].hw_value) {
  			sinfo->txrate.legacy = lbs_rates[i].bitrate;
  			sinfo->filled |= STATION_INFO_TX_BITRATE;
  			break;
  		}
  	}
  
  	return 0;
  }
  
  
  
  
  /*
   * "Site survey", here just current channel and noise level
   */
  
  static int lbs_get_survey(struct wiphy *wiphy, struct net_device *dev,
  	int idx, struct survey_info *survey)
  {
  	struct lbs_private *priv = wiphy_priv(wiphy);
  	s8 signal, noise;
  	int ret;
  
  	if (dev == priv->mesh_dev)
  		return -EOPNOTSUPP;
  
  	if (idx != 0)
  		ret = -ENOENT;
  
  	lbs_deb_enter(LBS_DEB_CFG80211);
  
  	survey->channel = ieee80211_get_channel(wiphy,
  		ieee80211_channel_to_frequency(priv->channel,
  					       IEEE80211_BAND_2GHZ));
  
  	ret = lbs_get_rssi(priv, &signal, &noise);
  	if (ret == 0) {
  		survey->filled = SURVEY_INFO_NOISE_DBM;
  		survey->noise = noise;
  	}
  
  	lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
  	return ret;
  }
  
  
  
  
  /*
   * Change interface
   */
  
  static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
  	enum nl80211_iftype type, u32 *flags,
  	       struct vif_params *params)
  {
  	struct lbs_private *priv = wiphy_priv(wiphy);
  	int ret = 0;
  
  	if (dev == priv->mesh_dev)
  		return -EOPNOTSUPP;
  
  	switch (type) {
  	case NL80211_IFTYPE_MONITOR:
  	case NL80211_IFTYPE_STATION:
  	case NL80211_IFTYPE_ADHOC:
  		break;
  	default:
  		return -EOPNOTSUPP;
  	}
  
  	lbs_deb_enter(LBS_DEB_CFG80211);
  
  	if (priv->iface_running)
  		ret = lbs_set_iface_type(priv, type);
  
  	if (!ret)
  		priv->wdev->iftype = type;
  
  	lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
  	return ret;
  }
  
  
  
  /*
   * IBSS (Ad-Hoc)
   */
  
  /*
   * The firmware needs the following bits masked out of the beacon-derived
   * capability field when associating/joining to a BSS:
   *  9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
   */
  #define CAPINFO_MASK (~(0xda00))
  
  
  static void lbs_join_post(struct lbs_private *priv,
  			  struct cfg80211_ibss_params *params,
  			  u8 *bssid, u16 capability)
  {
  	u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
  		   2 + 4 +                      /* basic rates */
  		   2 + 1 +                      /* DS parameter */
  		   2 + 2 +                      /* atim */
  		   2 + 8];                      /* extended rates */
  	u8 *fake = fake_ie;
  	struct cfg80211_bss *bss;
  
  	lbs_deb_enter(LBS_DEB_CFG80211);
  
  	/*
  	 * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
  	 * the real IE from the firmware. So we fabricate a fake IE based on
  	 * what the firmware actually sends (sniffed with wireshark).
  	 */
  	/* Fake SSID IE */
  	*fake++ = WLAN_EID_SSID;
  	*fake++ = params->ssid_len;
  	memcpy(fake, params->ssid, params->ssid_len);
  	fake += params->ssid_len;
  	/* Fake supported basic rates IE */
  	*fake++ = WLAN_EID_SUPP_RATES;
  	*fake++ = 4;
  	*fake++ = 0x82;
  	*fake++ = 0x84;
  	*fake++ = 0x8b;
  	*fake++ = 0x96;
  	/* Fake DS channel IE */
  	*fake++ = WLAN_EID_DS_PARAMS;
  	*fake++ = 1;
  	*fake++ = params->channel->hw_value;
  	/* Fake IBSS params IE */
  	*fake++ = WLAN_EID_IBSS_PARAMS;
  	*fake++ = 2;
  	*fake++ = 0; /* ATIM=0 */
  	*fake++ = 0;
  	/* Fake extended rates IE, TODO: don't add this for 802.11b only,
  	 * but I don't know how this could be checked */
  	*fake++ = WLAN_EID_EXT_SUPP_RATES;
  	*fake++ = 8;
  	*fake++ = 0x0c;
  	*fake++ = 0x12;
  	*fake++ = 0x18;
  	*fake++ = 0x24;
  	*fake++ = 0x30;
  	*fake++ = 0x48;
  	*fake++ = 0x60;
  	*fake++ = 0x6c;
  	lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
  
  	bss = cfg80211_inform_bss(priv->wdev->wiphy,
  				  params->channel,
  				  bssid,
  				  0,
  				  capability,
  				  params->beacon_interval,
  				  fake_ie, fake - fake_ie,
  				  0, GFP_KERNEL);
  	cfg80211_put_bss(bss);
  
  	memcpy(priv->wdev->ssid, params->ssid, params->ssid_len);
  	priv->wdev->ssid_len = params->ssid_len;
  
  	cfg80211_ibss_joined(priv->dev, bssid, GFP_KERNEL);
  
  	/* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
  	priv->connect_status = LBS_CONNECTED;
  	netif_carrier_on(priv->dev);
  	if (!priv->tx_pending_len)
  		netif_wake_queue(priv->dev);
  
  	lbs_deb_leave(LBS_DEB_CFG80211);
  }
  
  static int lbs_ibss_join_existing(struct lbs_private *priv,
  	struct cfg80211_ibss_params *params,
  	struct cfg80211_bss *bss)
  {
  	const u8 *rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
  	struct cmd_ds_802_11_ad_hoc_join cmd;
  	u8 preamble = RADIO_PREAMBLE_SHORT;
  	int ret = 0;
  
  	lbs_deb_enter(LBS_DEB_CFG80211);
  
  	/* TODO: set preamble based on scan result */
  	ret = lbs_set_radio(priv, preamble, 1);
  	if (ret)
  		goto out;
  
  	/*
  	 * Example CMD_802_11_AD_HOC_JOIN command:
  	 *
  	 * command         2c 00         CMD_802_11_AD_HOC_JOIN
  	 * size            65 00
  	 * sequence        xx xx
  	 * result          00 00
  	 * bssid           02 27 27 97 2f 96
  	 * ssid            49 42 53 53 00 00 00 00
  	 *                 00 00 00 00 00 00 00 00
  	 *                 00 00 00 00 00 00 00 00
  	 *                 00 00 00 00 00 00 00 00
  	 * type            02            CMD_BSS_TYPE_IBSS
  	 * beacon period   64 00
  	 * dtim period     00
  	 * timestamp       00 00 00 00 00 00 00 00
  	 * localtime       00 00 00 00 00 00 00 00
  	 * IE DS           03
  	 * IE DS len       01
  	 * IE DS channel   01
  	 * reserveed       00 00 00 00
  	 * IE IBSS         06
  	 * IE IBSS len     02
  	 * IE IBSS atim    00 00
  	 * reserved        00 00 00 00
  	 * capability      02 00
  	 * rates           82 84 8b 96 0c 12 18 24 30 48 60 6c 00
  	 * fail timeout    ff 00
  	 * probe delay     00 00
  	 */
  	memset(&cmd, 0, sizeof(cmd));
  	cmd.hdr.size = cpu_to_le16(sizeof(cmd));
  
  	memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
  	memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
  	cmd.bss.type = CMD_BSS_TYPE_IBSS;
  	cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
  	cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
  	cmd.bss.ds.header.len = 1;
  	cmd.bss.ds.channel = params->channel->hw_value;
  	cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
  	cmd.bss.ibss.header.len = 2;
  	cmd.bss.ibss.atimwindow = 0;
  	cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
  
  	/* set rates to the intersection of our rates and the rates in the
  	   bss */
  	if (!rates_eid) {
  		lbs_add_rates(cmd.bss.rates);
  	} else {
  		int hw, i;
  		u8 rates_max = rates_eid[1];
  		u8 *rates = cmd.bss.rates;
  		for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
  			u8 hw_rate = lbs_rates[hw].bitrate / 5;
  			for (i = 0; i < rates_max; i++) {
  				if (hw_rate == (rates_eid[i+2] & 0x7f)) {
  					u8 rate = rates_eid[i+2];
  					if (rate == 0x02 || rate == 0x04 ||
  					    rate == 0x0b || rate == 0x16)
  						rate |= 0x80;
  					*rates++ = rate;
  				}
  			}
  		}
  	}
  
  	/* Only v8 and below support setting this */
  	if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
  		cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
  		cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
  	}
  	ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
  	if (ret)
  		goto out;
  
  	/*
  	 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
  	 *
  	 * response        2c 80
  	 * size            09 00
  	 * sequence        xx xx
  	 * result          00 00
  	 * reserved        00
  	 */
  	lbs_join_post(priv, params, bss->bssid, bss->capability);
  
   out:
  	lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
  	return ret;
  }
  
  
  
  static int lbs_ibss_start_new(struct lbs_private *priv,
  	struct cfg80211_ibss_params *params)
  {
  	struct cmd_ds_802_11_ad_hoc_start cmd;
  	struct cmd_ds_802_11_ad_hoc_result *resp =
  		(struct cmd_ds_802_11_ad_hoc_result *) &cmd;
  	u8 preamble = RADIO_PREAMBLE_SHORT;
  	int ret = 0;
  	u16 capability;
  
  	lbs_deb_enter(LBS_DEB_CFG80211);
  
  	ret = lbs_set_radio(priv, preamble, 1);
  	if (ret)
  		goto out;
  
  	/*
  	 * Example CMD_802_11_AD_HOC_START command:
  	 *
  	 * command         2b 00         CMD_802_11_AD_HOC_START
  	 * size            b1 00
  	 * sequence        xx xx
  	 * result          00 00
  	 * ssid            54 45 53 54 00 00 00 00
  	 *                 00 00 00 00 00 00 00 00
  	 *                 00 00 00 00 00 00 00 00
  	 *                 00 00 00 00 00 00 00 00
  	 * bss type        02
  	 * beacon period   64 00
  	 * dtim period     00
  	 * IE IBSS         06
  	 * IE IBSS len     02
  	 * IE IBSS atim    00 00
  	 * reserved        00 00 00 00
  	 * IE DS           03
  	 * IE DS len       01
  	 * IE DS channel   01
  	 * reserved        00 00 00 00
  	 * probe delay     00 00
  	 * capability      02 00
  	 * rates           82 84 8b 96   (basic rates with have bit 7 set)
  	 *                 0c 12 18 24 30 48 60 6c
  	 * padding         100 bytes
  	 */
  	memset(&cmd, 0, sizeof(cmd));
  	cmd.hdr.size = cpu_to_le16(sizeof(cmd));
  	memcpy(cmd.ssid, params->ssid, params->ssid_len);
  	cmd.bsstype = CMD_BSS_TYPE_IBSS;
  	cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
  	cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
  	cmd.ibss.header.len = 2;
  	cmd.ibss.atimwindow = 0;
  	cmd.ds.header.id = WLAN_EID_DS_PARAMS;
  	cmd.ds.header.len = 1;
  	cmd.ds.channel = params->channel->hw_value;
  	/* Only v8 and below support setting probe delay */
  	if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
  		cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
  	/* TODO: mix in WLAN_CAPABILITY_PRIVACY */
  	capability = WLAN_CAPABILITY_IBSS;
  	cmd.capability = cpu_to_le16(capability);
  	lbs_add_rates(cmd.rates);
  
  
  	ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
  	if (ret)
  		goto out;
  
  	/*
  	 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
  	 *
  	 * response        2b 80
  	 * size            14 00
  	 * sequence        xx xx
  	 * result          00 00
  	 * reserved        00
  	 * bssid           02 2b 7b 0f 86 0e
  	 */
  	lbs_join_post(priv, params, resp->bssid, capability);
  
   out:
  	lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
  	return ret;
  }
  
  
  static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
  		struct cfg80211_ibss_params *params)
  {
  	struct lbs_private *priv = wiphy_priv(wiphy);
  	int ret = 0;
  	struct cfg80211_bss *bss;
  	DECLARE_SSID_BUF(ssid_buf);
  
  	if (dev == priv->mesh_dev)
  		return -EOPNOTSUPP;
  
  	lbs_deb_enter(LBS_DEB_CFG80211);
  
  	if (!params->channel) {
  		ret = -ENOTSUPP;
  		goto out;
  	}
  
  	ret = lbs_set_channel(priv, params->channel->hw_value);
  	if (ret)
  		goto out;
  
  	/* Search if someone is beaconing. This assumes that the
  	 * bss list is populated already */
  	bss = cfg80211_get_bss(wiphy, params->channel, params->bssid,
  		params->ssid, params->ssid_len,
  		WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS);
  
  	if (bss) {
  		ret = lbs_ibss_join_existing(priv, params, bss);
  		cfg80211_put_bss(bss);
  	} else
  		ret = lbs_ibss_start_new(priv, params);
  
  
   out:
  	lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
  	return ret;
  }
  
  
  static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
  {
  	struct lbs_private *priv = wiphy_priv(wiphy);
  	struct cmd_ds_802_11_ad_hoc_stop cmd;
  	int ret = 0;
  
  	if (dev == priv->mesh_dev)
  		return -EOPNOTSUPP;
  
  	lbs_deb_enter(LBS_DEB_CFG80211);
  
  	memset(&cmd, 0, sizeof(cmd));
  	cmd.hdr.size = cpu_to_le16(sizeof(cmd));
  	ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
  
  	/* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
  	lbs_mac_event_disconnected(priv);
  
  	lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
  	return ret;
  }
  
  
  
  
  /*
   * Initialization
   */
  
  static struct cfg80211_ops lbs_cfg80211_ops = {
  	.set_channel = lbs_cfg_set_channel,
  	.scan = lbs_cfg_scan,
  	.connect = lbs_cfg_connect,
  	.disconnect = lbs_cfg_disconnect,
  	.add_key = lbs_cfg_add_key,
  	.del_key = lbs_cfg_del_key,
  	.set_default_key = lbs_cfg_set_default_key,
  	.get_station = lbs_cfg_get_station,
  	.dump_survey = lbs_get_survey,
  	.change_virtual_intf = lbs_change_intf,
  	.join_ibss = lbs_join_ibss,
  	.leave_ibss = lbs_leave_ibss,
  };
  
  
  /*
   * At this time lbs_private *priv doesn't even exist, so we just allocate
   * memory and don't initialize the wiphy further. This is postponed until we
   * can talk to the firmware and happens at registration time in
   * lbs_cfg_wiphy_register().
   */
  struct wireless_dev *lbs_cfg_alloc(struct device *dev)
  {
  	int ret = 0;
  	struct wireless_dev *wdev;
  
  	lbs_deb_enter(LBS_DEB_CFG80211);
  
  	wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
  	if (!wdev) {
  		dev_err(dev, "cannot allocate wireless device\n");
  		return ERR_PTR(-ENOMEM);
  	}
  
  	wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
  	if (!wdev->wiphy) {
  		dev_err(dev, "cannot allocate wiphy\n");
  		ret = -ENOMEM;
  		goto err_wiphy_new;
  	}
  
  	lbs_deb_leave(LBS_DEB_CFG80211);
  	return wdev;
  
   err_wiphy_new:
  	kfree(wdev);
  	lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
  	return ERR_PTR(ret);
  }
  
  
  static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
  {
  	struct region_code_mapping {
  		const char *cn;
  		int code;
  	};
  
  	/* Section 5.17.2 */
  	static const struct region_code_mapping regmap[] = {
  		{"US ", 0x10}, /* US FCC */
  		{"CA ", 0x20}, /* Canada */
  		{"EU ", 0x30}, /* ETSI   */
  		{"ES ", 0x31}, /* Spain  */
  		{"FR ", 0x32}, /* France */
  		{"JP ", 0x40}, /* Japan  */
  	};
  	size_t i;
  
  	lbs_deb_enter(LBS_DEB_CFG80211);
  
  	for (i = 0; i < ARRAY_SIZE(regmap); i++)
  		if (regmap[i].code == priv->regioncode) {
  			regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
  			break;
  		}
  
  	lbs_deb_leave(LBS_DEB_CFG80211);
  }
  
  
  /*
   * This function get's called after lbs_setup_firmware() determined the
   * firmware capabities. So we can setup the wiphy according to our
   * hardware/firmware.
   */
  int lbs_cfg_register(struct lbs_private *priv)
  {
  	struct wireless_dev *wdev = priv->wdev;
  	int ret;
  
  	lbs_deb_enter(LBS_DEB_CFG80211);
  
  	wdev->wiphy->max_scan_ssids = 1;
  	wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
  
  	wdev->wiphy->interface_modes =
  			BIT(NL80211_IFTYPE_STATION) |
  			BIT(NL80211_IFTYPE_ADHOC);
  	if (lbs_rtap_supported(priv))
  		wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
  	if (lbs_mesh_activated(priv))
  		wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MESH_POINT);
  
  	wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &lbs_band_2ghz;
  
  	/*
  	 * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
  	 * never seen a firmware without WPA
  	 */
  	wdev->wiphy->cipher_suites = cipher_suites;
  	wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
  	wdev->wiphy->reg_notifier = lbs_reg_notifier;
  
  	ret = wiphy_register(wdev->wiphy);
  	if (ret < 0)
  		pr_err("cannot register wiphy device\n");
  
  	priv->wiphy_registered = true;
  
  	ret = register_netdev(priv->dev);
  	if (ret)
  		pr_err("cannot register network device\n");
  
  	INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
  
  	lbs_cfg_set_regulatory_hint(priv);
  
  	lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret);
  	return ret;
  }
  
  int lbs_reg_notifier(struct wiphy *wiphy,
  		struct regulatory_request *request)
  {
  	struct lbs_private *priv = wiphy_priv(wiphy);
  	int ret;
  
  	lbs_deb_enter_args(LBS_DEB_CFG80211, "cfg80211 regulatory domain "
  			"callback for domain %c%c\n", request->alpha2[0],
  			request->alpha2[1]);
  
  	ret = lbs_set_11d_domain_info(priv, request, wiphy->bands);
  
  	lbs_deb_leave(LBS_DEB_CFG80211);
  	return ret;
  }
  
  void lbs_scan_deinit(struct lbs_private *priv)
  {
  	lbs_deb_enter(LBS_DEB_CFG80211);
  	cancel_delayed_work_sync(&priv->scan_work);
  }
  
  
  void lbs_cfg_free(struct lbs_private *priv)
  {
  	struct wireless_dev *wdev = priv->wdev;
  
  	lbs_deb_enter(LBS_DEB_CFG80211);
  
  	if (!wdev)
  		return;
  
  	if (priv->wiphy_registered)
  		wiphy_unregister(wdev->wiphy);
  
  	if (wdev->wiphy)
  		wiphy_free(wdev->wiphy);
  
  	kfree(wdev);
  }
  