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rndis_wlan.c

/*
 * Driver for RNDIS based wireless USB devices.
 *
 * Copyright (C) 2007 by Bjorge Dijkstra <bjd@jooz.net>
 * Copyright (C) 2008-2009 by Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *  Portions of this file are based on NDISwrapper project,
 *  Copyright (C) 2003-2005 Pontus Fuchs, Giridhar Pemmasani
 *  http://ndiswrapper.sourceforge.net/
 */

// #define  DEBUG             // error path messages, extra info
// #define  VERBOSE                 // more; success messages

#include <linux/module.h>
#include <linux/init.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/workqueue.h>
#include <linux/mutex.h>
#include <linux/mii.h>
#include <linux/usb.h>
#include <linux/usb/cdc.h>
#include <linux/wireless.h>
#include <linux/ieee80211.h>
#include <linux/if_arp.h>
#include <linux/ctype.h>
#include <linux/spinlock.h>
#include <net/iw_handler.h>
#include <net/cfg80211.h>
#include <linux/usb/usbnet.h>
#include <linux/usb/rndis_host.h>


/* NOTE: All these are settings for Broadcom chipset */
static char modparam_country[4] = "EU";
module_param_string(country, modparam_country, 4, 0444);
MODULE_PARM_DESC(country, "Country code (ISO 3166-1 alpha-2), default: EU");

static int modparam_frameburst = 1;
module_param_named(frameburst, modparam_frameburst, int, 0444);
MODULE_PARM_DESC(frameburst, "enable frame bursting (default: on)");

static int modparam_afterburner = 0;
module_param_named(afterburner, modparam_afterburner, int, 0444);
MODULE_PARM_DESC(afterburner,
      "enable afterburner aka '125 High Speed Mode' (default: off)");

static int modparam_power_save = 0;
module_param_named(power_save, modparam_power_save, int, 0444);
MODULE_PARM_DESC(power_save,
      "set power save mode: 0=off, 1=on, 2=fast (default: off)");

static int modparam_power_output = 3;
module_param_named(power_output, modparam_power_output, int, 0444);
MODULE_PARM_DESC(power_output,
      "set power output: 0=25%, 1=50%, 2=75%, 3=100% (default: 100%)");

static int modparam_roamtrigger = -70;
module_param_named(roamtrigger, modparam_roamtrigger, int, 0444);
MODULE_PARM_DESC(roamtrigger,
      "set roaming dBm trigger: -80=optimize for distance, "
                        "-60=bandwidth (default: -70)");

static int modparam_roamdelta = 1;
module_param_named(roamdelta, modparam_roamdelta, int, 0444);
MODULE_PARM_DESC(roamdelta,
      "set roaming tendency: 0=aggressive, 1=moderate, "
                        "2=conservative (default: moderate)");

static int modparam_workaround_interval = 500;
module_param_named(workaround_interval, modparam_workaround_interval,
                                          int, 0444);
MODULE_PARM_DESC(workaround_interval,
      "set stall workaround interval in msecs (default: 500)");


/* various RNDIS OID defs */
#define OID_GEN_LINK_SPEED                cpu_to_le32(0x00010107)
#define OID_GEN_RNDIS_CONFIG_PARAMETER          cpu_to_le32(0x0001021b)

#define OID_GEN_XMIT_OK                   cpu_to_le32(0x00020101)
#define OID_GEN_RCV_OK                    cpu_to_le32(0x00020102)
#define OID_GEN_XMIT_ERROR                cpu_to_le32(0x00020103)
#define OID_GEN_RCV_ERROR                 cpu_to_le32(0x00020104)
#define OID_GEN_RCV_NO_BUFFER             cpu_to_le32(0x00020105)

#define OID_802_3_PERMANENT_ADDRESS       cpu_to_le32(0x01010101)
#define OID_802_3_CURRENT_ADDRESS         cpu_to_le32(0x01010102)
#define OID_802_3_MULTICAST_LIST          cpu_to_le32(0x01010103)
#define OID_802_3_MAXIMUM_LIST_SIZE       cpu_to_le32(0x01010104)

#define OID_802_11_BSSID                  cpu_to_le32(0x0d010101)
#define OID_802_11_SSID                   cpu_to_le32(0x0d010102)
#define OID_802_11_INFRASTRUCTURE_MODE          cpu_to_le32(0x0d010108)
#define OID_802_11_ADD_WEP                cpu_to_le32(0x0d010113)
#define OID_802_11_REMOVE_WEP             cpu_to_le32(0x0d010114)
#define OID_802_11_DISASSOCIATE                 cpu_to_le32(0x0d010115)
#define OID_802_11_AUTHENTICATION_MODE          cpu_to_le32(0x0d010118)
#define OID_802_11_PRIVACY_FILTER         cpu_to_le32(0x0d010119)
#define OID_802_11_BSSID_LIST_SCAN        cpu_to_le32(0x0d01011a)
#define OID_802_11_ENCRYPTION_STATUS            cpu_to_le32(0x0d01011b)
#define OID_802_11_ADD_KEY                cpu_to_le32(0x0d01011d)
#define OID_802_11_REMOVE_KEY             cpu_to_le32(0x0d01011e)
#define OID_802_11_ASSOCIATION_INFORMATION      cpu_to_le32(0x0d01011f)
#define OID_802_11_PMKID                  cpu_to_le32(0x0d010123)
#define OID_802_11_NETWORK_TYPES_SUPPORTED      cpu_to_le32(0x0d010203)
#define OID_802_11_NETWORK_TYPE_IN_USE          cpu_to_le32(0x0d010204)
#define OID_802_11_TX_POWER_LEVEL         cpu_to_le32(0x0d010205)
#define OID_802_11_RSSI                   cpu_to_le32(0x0d010206)
#define OID_802_11_RSSI_TRIGGER                 cpu_to_le32(0x0d010207)
#define OID_802_11_FRAGMENTATION_THRESHOLD      cpu_to_le32(0x0d010209)
#define OID_802_11_RTS_THRESHOLD          cpu_to_le32(0x0d01020a)
#define OID_802_11_SUPPORTED_RATES        cpu_to_le32(0x0d01020e)
#define OID_802_11_CONFIGURATION          cpu_to_le32(0x0d010211)
#define OID_802_11_BSSID_LIST             cpu_to_le32(0x0d010217)


/* Typical noise/maximum signal level values taken from ndiswrapper iw_ndis.h */
#define     WL_NOISE    -96   /* typical noise level in dBm */
#define     WL_SIGMAX   -32   /* typical maximum signal level in dBm */


/* Assume that Broadcom 4320 (only chipset at time of writing known to be
 * based on wireless rndis) has default txpower of 13dBm.
 * This value is from Linksys WUSB54GSC User Guide, Appendix F: Specifications.
 *   13dBm == 19.9mW
 */
#define BCM4320_DEFAULT_TXPOWER 20


/* codes for "status" field of completion messages */
#define RNDIS_STATUS_ADAPTER_NOT_READY          cpu_to_le32(0xc0010011)
#define RNDIS_STATUS_ADAPTER_NOT_OPEN           cpu_to_le32(0xc0010012)


/* NDIS data structures. Taken from wpa_supplicant driver_ndis.c
 * slightly modified for datatype endianess, etc
 */
#define NDIS_802_11_LENGTH_SSID 32
#define NDIS_802_11_LENGTH_RATES 8
#define NDIS_802_11_LENGTH_RATES_EX 16

enum ndis_80211_net_type {
      NDIS_80211_TYPE_FREQ_HOP,
      NDIS_80211_TYPE_DIRECT_SEQ,
      NDIS_80211_TYPE_OFDM_A,
      NDIS_80211_TYPE_OFDM_G
};

enum ndis_80211_net_infra {
      NDIS_80211_INFRA_ADHOC,
      NDIS_80211_INFRA_INFRA,
      NDIS_80211_INFRA_AUTO_UNKNOWN
};

enum ndis_80211_auth_mode {
      NDIS_80211_AUTH_OPEN,
      NDIS_80211_AUTH_SHARED,
      NDIS_80211_AUTH_AUTO_SWITCH,
      NDIS_80211_AUTH_WPA,
      NDIS_80211_AUTH_WPA_PSK,
      NDIS_80211_AUTH_WPA_NONE,
      NDIS_80211_AUTH_WPA2,
      NDIS_80211_AUTH_WPA2_PSK
};

enum ndis_80211_encr_status {
      NDIS_80211_ENCR_WEP_ENABLED,
      NDIS_80211_ENCR_DISABLED,
      NDIS_80211_ENCR_WEP_KEY_ABSENT,
      NDIS_80211_ENCR_NOT_SUPPORTED,
      NDIS_80211_ENCR_TKIP_ENABLED,
      NDIS_80211_ENCR_TKIP_KEY_ABSENT,
      NDIS_80211_ENCR_CCMP_ENABLED,
      NDIS_80211_ENCR_CCMP_KEY_ABSENT
};

enum ndis_80211_priv_filter {
      NDIS_80211_PRIV_ACCEPT_ALL,
      NDIS_80211_PRIV_8021X_WEP
};

enum ndis_80211_addkey_bits {
      NDIS_80211_ADDKEY_8021X_AUTH = cpu_to_le32(1 << 28),
      NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ = cpu_to_le32(1 << 29),
      NDIS_80211_ADDKEY_PAIRWISE_KEY = cpu_to_le32(1 << 30),
      NDIS_80211_ADDKEY_TRANSMIT_KEY = cpu_to_le32(1 << 31)
};

enum ndis_80211_addwep_bits {
      NDIS_80211_ADDWEP_PERCLIENT_KEY = cpu_to_le32(1 << 30),
      NDIS_80211_ADDWEP_TRANSMIT_KEY = cpu_to_le32(1 << 31)
};

00211 struct ndis_80211_ssid {
      __le32 length;
      u8 essid[NDIS_802_11_LENGTH_SSID];
} __attribute__((packed));

00216 struct ndis_80211_conf_freq_hop {
      __le32 length;
      __le32 hop_pattern;
      __le32 hop_set;
      __le32 dwell_time;
} __attribute__((packed));

00223 struct ndis_80211_conf {
      __le32 length;
      __le32 beacon_period;
      __le32 atim_window;
      __le32 ds_config;
      struct ndis_80211_conf_freq_hop fh_config;
} __attribute__((packed));

00231 struct ndis_80211_bssid_ex {
      __le32 length;
      u8 mac[6];
      u8 padding[2];
      struct ndis_80211_ssid ssid;
      __le32 privacy;
      __le32 rssi;
      __le32 net_type;
      struct ndis_80211_conf config;
      __le32 net_infra;
      u8 rates[NDIS_802_11_LENGTH_RATES_EX];
      __le32 ie_length;
      u8 ies[0];
} __attribute__((packed));

00246 struct ndis_80211_bssid_list_ex {
      __le32 num_items;
      struct ndis_80211_bssid_ex bssid[0];
} __attribute__((packed));

00251 struct ndis_80211_fixed_ies {
      u8 timestamp[8];
      __le16 beacon_interval;
      __le16 capabilities;
} __attribute__((packed));

00257 struct ndis_80211_wep_key {
      __le32 size;
      __le32 index;
      __le32 length;
      u8 material[32];
} __attribute__((packed));

00264 struct ndis_80211_key {
      __le32 size;
      __le32 index;
      __le32 length;
      u8 bssid[6];
      u8 padding[6];
      u8 rsc[8];
      u8 material[32];
} __attribute__((packed));

00274 struct ndis_80211_remove_key {
      __le32 size;
      __le32 index;
      u8 bssid[6];
} __attribute__((packed));

00280 struct ndis_config_param {
      __le32 name_offs;
      __le32 name_length;
      __le32 type;
      __le32 value_offs;
      __le32 value_length;
} __attribute__((packed));

00288 struct ndis_80211_assoc_info {
      __le32 length;
      __le16 req_ies;
00291       struct req_ie {
            __le16 capa;
            __le16 listen_interval;
            u8 cur_ap_address[6];
      } req_ie;
      __le32 req_ie_length;
      __le32 offset_req_ies;
      __le16 resp_ies;
00299       struct resp_ie {
            __le16 capa;
            __le16 status_code;
            __le16 assoc_id;
      } resp_ie;
      __le32 resp_ie_length;
      __le32 offset_resp_ies;
} __attribute__((packed));

/* these have to match what is in wpa_supplicant */
00309 enum wpa_alg { WPA_ALG_NONE, WPA_ALG_WEP, WPA_ALG_TKIP, WPA_ALG_CCMP };
enum wpa_cipher { CIPHER_NONE, CIPHER_WEP40, CIPHER_TKIP, CIPHER_CCMP,
              CIPHER_WEP104 };
enum wpa_key_mgmt { KEY_MGMT_802_1X, KEY_MGMT_PSK, KEY_MGMT_NONE,
                KEY_MGMT_802_1X_NO_WPA, KEY_MGMT_WPA_NONE };

/*
 *  private data
00317  */
#define NET_TYPE_11FB   0

#define CAP_MODE_80211A       1
#define CAP_MODE_80211B       2
#define CAP_MODE_80211G       4
#define CAP_MODE_MASK         7

#define WORK_LINK_UP          (1<<0)
#define WORK_LINK_DOWN        (1<<1)
#define WORK_SET_MULTICAST_LIST     (1<<2)

#define COMMAND_BUFFER_SIZE   (CONTROL_BUFFER_SIZE + sizeof(struct rndis_set))

static const struct ieee80211_channel rndis_channels[] = {
      { .center_freq = 2412 },
      { .center_freq = 2417 },
      { .center_freq = 2422 },
      { .center_freq = 2427 },
      { .center_freq = 2432 },
      { .center_freq = 2437 },
      { .center_freq = 2442 },
      { .center_freq = 2447 },
      { .center_freq = 2452 },
      { .center_freq = 2457 },
      { .center_freq = 2462 },
      { .center_freq = 2467 },
      { .center_freq = 2472 },
      { .center_freq = 2484 },
};

static const struct ieee80211_rate rndis_rates[] = {
      { .bitrate = 10 },
      { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
      { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
      { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
      { .bitrate = 60 },
      { .bitrate = 90 },
      { .bitrate = 120 },
      { .bitrate = 180 },
      { .bitrate = 240 },
      { .bitrate = 360 },
      { .bitrate = 480 },
      { .bitrate = 540 }
};

/* RNDIS device private data */
00364 struct rndis_wlan_private {
      struct usbnet *usbdev;

      struct wireless_dev wdev;

      struct cfg80211_scan_request *scan_request;

      struct workqueue_struct *workqueue;
      struct delayed_work stats_work;
      struct delayed_work scan_work;
      struct work_struct work;
      struct mutex command_lock;
      spinlock_t stats_lock;
      unsigned long work_pending;

      struct ieee80211_supported_band band;
      struct ieee80211_channel channels[ARRAY_SIZE(rndis_channels)];
      struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)];

      struct iw_statistics iwstats;
      struct iw_statistics privstats;

      int caps;
      int multicast_size;

      /* module parameters */
      char param_country[4];
      int  param_frameburst;
      int  param_afterburner;
      int  param_power_save;
      int  param_power_output;
      int  param_roamtrigger;
      int  param_roamdelta;
      u32  param_workaround_interval;

      /* hardware state */
      int radio_on;
      int infra_mode;
      struct ndis_80211_ssid essid;

      /* encryption stuff */
      int  encr_tx_key_index;
      char encr_keys[4][32];
      int  encr_key_len[4];
      char encr_key_wpa[4];
      int  wpa_version;
      int  wpa_keymgmt;
      int  wpa_authalg;
      int  wpa_ie_len;
      u8  *wpa_ie;
      int  wpa_cipher_pair;
      int  wpa_cipher_group;

      u8 command_buffer[COMMAND_BUFFER_SIZE];
};

/*
 * cfg80211 ops
 */
static int rndis_change_virtual_intf(struct wiphy *wiphy, int ifindex,
                              enum nl80211_iftype type, u32 *flags,
                              struct vif_params *params);

static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
                  struct cfg80211_scan_request *request);

static struct cfg80211_ops rndis_config_ops = {
      .change_virtual_intf = rndis_change_virtual_intf,
      .scan = rndis_scan,
};

static void *rndis_wiphy_privid = &rndis_wiphy_privid;

static const int bcm4320_power_output[4] = { 25, 50, 75, 100 };

static const unsigned char zero_bssid[ETH_ALEN] = {0,};
static const unsigned char ffff_bssid[ETH_ALEN] = { 0xff, 0xff, 0xff,
                                          0xff, 0xff, 0xff };


static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev)
{
      return (struct rndis_wlan_private *)dev->driver_priv;
}


static u32 get_bcm4320_power(struct rndis_wlan_private *priv)
{
      return BCM4320_DEFAULT_TXPOWER *
            bcm4320_power_output[priv->param_power_output] / 100;
}


/* translate error code */
static int rndis_error_status(__le32 rndis_status)
{
      int ret = -EINVAL;
      switch (rndis_status) {
      case RNDIS_STATUS_SUCCESS:
            ret = 0;
            break;
      case RNDIS_STATUS_FAILURE:
      case RNDIS_STATUS_INVALID_DATA:
            ret = -EINVAL;
            break;
      case RNDIS_STATUS_NOT_SUPPORTED:
            ret = -EOPNOTSUPP;
            break;
      case RNDIS_STATUS_ADAPTER_NOT_READY:
      case RNDIS_STATUS_ADAPTER_NOT_OPEN:
            ret = -EBUSY;
            break;
      }
      return ret;
}


static int rndis_query_oid(struct usbnet *dev, __le32 oid, void *data, int *len)
{
      struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
      union {
            void              *buf;
            struct rndis_msg_hdr    *header;
            struct rndis_query      *get;
            struct rndis_query_c    *get_c;
      } u;
      int ret, buflen;

      buflen = *len + sizeof(*u.get);
      if (buflen < CONTROL_BUFFER_SIZE)
            buflen = CONTROL_BUFFER_SIZE;

      if (buflen > COMMAND_BUFFER_SIZE) {
            u.buf = kmalloc(buflen, GFP_KERNEL);
            if (!u.buf)
                  return -ENOMEM;
      } else {
            u.buf = priv->command_buffer;
      }

      mutex_lock(&priv->command_lock);

      memset(u.get, 0, sizeof *u.get);
      u.get->msg_type = RNDIS_MSG_QUERY;
      u.get->msg_len = cpu_to_le32(sizeof *u.get);
      u.get->oid = oid;

      ret = rndis_command(dev, u.header, buflen);
      if (ret == 0) {
            ret = le32_to_cpu(u.get_c->len);
            *len = (*len > ret) ? ret : *len;
            memcpy(data, u.buf + le32_to_cpu(u.get_c->offset) + 8, *len);
            ret = rndis_error_status(u.get_c->status);
      }

      mutex_unlock(&priv->command_lock);

      if (u.buf != priv->command_buffer)
            kfree(u.buf);
      return ret;
}


static int rndis_set_oid(struct usbnet *dev, __le32 oid, void *data, int len)
{
      struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
      union {
            void              *buf;
            struct rndis_msg_hdr    *header;
            struct rndis_set  *set;
            struct rndis_set_c      *set_c;
      } u;
      int ret, buflen;

      buflen = len + sizeof(*u.set);
      if (buflen < CONTROL_BUFFER_SIZE)
            buflen = CONTROL_BUFFER_SIZE;

      if (buflen > COMMAND_BUFFER_SIZE) {
            u.buf = kmalloc(buflen, GFP_KERNEL);
            if (!u.buf)
                  return -ENOMEM;
      } else {
            u.buf = priv->command_buffer;
      }

      mutex_lock(&priv->command_lock);

      memset(u.set, 0, sizeof *u.set);
      u.set->msg_type = RNDIS_MSG_SET;
      u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
      u.set->oid = oid;
      u.set->len = cpu_to_le32(len);
      u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
      u.set->handle = cpu_to_le32(0);
      memcpy(u.buf + sizeof(*u.set), data, len);

      ret = rndis_command(dev, u.header, buflen);
      if (ret == 0)
            ret = rndis_error_status(u.set_c->status);

      mutex_unlock(&priv->command_lock);

      if (u.buf != priv->command_buffer)
            kfree(u.buf);
      return ret;
}


/*
 * Specs say that we can only set config parameters only soon after device
 * initialization.
 *   value_type: 0 = u32, 2 = unicode string
 */
static int rndis_set_config_parameter(struct usbnet *dev, char *param,
                                    int value_type, void *value)
{
      struct ndis_config_param *infobuf;
      int value_len, info_len, param_len, ret, i;
      __le16 *unibuf;
      __le32 *dst_value;

      if (value_type == 0)
            value_len = sizeof(__le32);
      else if (value_type == 2)
            value_len = strlen(value) * sizeof(__le16);
      else
            return -EINVAL;

      param_len = strlen(param) * sizeof(__le16);
      info_len = sizeof(*infobuf) + param_len + value_len;

#ifdef DEBUG
      info_len += 12;
#endif
      infobuf = kmalloc(info_len, GFP_KERNEL);
      if (!infobuf)
            return -ENOMEM;

#ifdef DEBUG
      info_len -= 12;
      /* extra 12 bytes are for padding (debug output) */
      memset(infobuf, 0xCC, info_len + 12);
#endif

      if (value_type == 2)
            devdbg(dev, "setting config parameter: %s, value: %s",
                                    param, (u8 *)value);
      else
            devdbg(dev, "setting config parameter: %s, value: %d",
                                    param, *(u32 *)value);

      infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
      infobuf->name_length = cpu_to_le32(param_len);
      infobuf->type = cpu_to_le32(value_type);
      infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
      infobuf->value_length = cpu_to_le32(value_len);

      /* simple string to unicode string conversion */
      unibuf = (void *)infobuf + sizeof(*infobuf);
      for (i = 0; i < param_len / sizeof(__le16); i++)
            unibuf[i] = cpu_to_le16(param[i]);

      if (value_type == 2) {
            unibuf = (void *)infobuf + sizeof(*infobuf) + param_len;
            for (i = 0; i < value_len / sizeof(__le16); i++)
                  unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
      } else {
            dst_value = (void *)infobuf + sizeof(*infobuf) + param_len;
            *dst_value = cpu_to_le32(*(u32 *)value);
      }

#ifdef DEBUG
      devdbg(dev, "info buffer (len: %d):", info_len);
      for (i = 0; i < info_len; i += 12) {
            u32 *tmp = (u32 *)((u8 *)infobuf + i);
            devdbg(dev, "%08X:%08X:%08X",
                  cpu_to_be32(tmp[0]),
                  cpu_to_be32(tmp[1]),
                  cpu_to_be32(tmp[2]));
      }
#endif

      ret = rndis_set_oid(dev, OID_GEN_RNDIS_CONFIG_PARAMETER,
                                          infobuf, info_len);
      if (ret != 0)
            devdbg(dev, "setting rndis config parameter failed, %d.", ret);

      kfree(infobuf);
      return ret;
}

static int rndis_set_config_parameter_str(struct usbnet *dev,
                                    char *param, char *value)
{
      return(rndis_set_config_parameter(dev, param, 2, value));
}

/*static int rndis_set_config_parameter_u32(struct usbnet *dev,
                                    char *param, u32 value)
{
      return(rndis_set_config_parameter(dev, param, 0, &value));
}*/


/*
 * data conversion functions
 */
static int level_to_qual(int level)
{
      int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
      return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
}


static void dsconfig_to_freq(unsigned int dsconfig, struct iw_freq *freq)
{
      freq->e = 0;
      freq->i = 0;
      freq->flags = 0;

      /* see comment in wireless.h above the "struct iw_freq"
       * definition for an explanation of this if
       * NOTE: 1000000 is due to the kHz
       */
      if (dsconfig > 1000000) {
            freq->m = dsconfig / 10;
            freq->e = 1;
      } else
            freq->m = dsconfig;

      /* convert from kHz to Hz */
      freq->e += 3;
}


static int freq_to_dsconfig(struct iw_freq *freq, unsigned int *dsconfig)
{
      if (freq->m < 1000 && freq->e == 0) {
            if (freq->m >= 1 && freq->m <= 14)
                  *dsconfig = ieee80211_dsss_chan_to_freq(freq->m) * 1000;
            else
                  return -1;
      } else {
            int i;
            *dsconfig = freq->m;
            for (i = freq->e; i > 0; i--)
                  *dsconfig *= 10;
            *dsconfig /= 1000;
      }

      return 0;
}


/*
 * common functions
 */
static int
add_wep_key(struct usbnet *usbdev, char *key, int key_len, int index);

static int get_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
{
      int ret, len;

      len = sizeof(*ssid);
      ret = rndis_query_oid(usbdev, OID_802_11_SSID, ssid, &len);

      if (ret != 0)
            ssid->length = 0;

#ifdef DEBUG
      {
            unsigned char tmp[NDIS_802_11_LENGTH_SSID + 1];

            memcpy(tmp, ssid->essid, le32_to_cpu(ssid->length));
            tmp[le32_to_cpu(ssid->length)] = 0;
            devdbg(usbdev, "get_essid: '%s', ret: %d", tmp, ret);
      }
#endif
      return ret;
}


static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
{
      struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
      int ret;

      ret = rndis_set_oid(usbdev, OID_802_11_SSID, ssid, sizeof(*ssid));
      if (ret == 0) {
            memcpy(&priv->essid, ssid, sizeof(priv->essid));
            priv->radio_on = 1;
            devdbg(usbdev, "set_essid: radio_on = 1");
      }

      return ret;
}


static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
{
      int ret, len;

      len = ETH_ALEN;
      ret = rndis_query_oid(usbdev, OID_802_11_BSSID, bssid, &len);

      if (ret != 0)
            memset(bssid, 0, ETH_ALEN);

      return ret;
}

static int get_association_info(struct usbnet *usbdev,
                  struct ndis_80211_assoc_info *info, int len)
{
      return rndis_query_oid(usbdev, OID_802_11_ASSOCIATION_INFORMATION,
                        info, &len);
}

static int is_associated(struct usbnet *usbdev)
{
      u8 bssid[ETH_ALEN];
      int ret;

      ret = get_bssid(usbdev, bssid);

      return(ret == 0 && memcmp(bssid, zero_bssid, ETH_ALEN) != 0);
}


static int disassociate(struct usbnet *usbdev, int reset_ssid)
{
      struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
      struct ndis_80211_ssid ssid;
      int i, ret = 0;

      if (priv->radio_on) {
            ret = rndis_set_oid(usbdev, OID_802_11_DISASSOCIATE, NULL, 0);
            if (ret == 0) {
                  priv->radio_on = 0;
                  devdbg(usbdev, "disassociate: radio_on = 0");

                  if (reset_ssid)
                        msleep(100);
            }
      }

      /* disassociate causes radio to be turned off; if reset_ssid
       * is given, set random ssid to enable radio */
      if (reset_ssid) {
            ssid.length = cpu_to_le32(sizeof(ssid.essid));
            get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
            ssid.essid[0] = 0x1;
            ssid.essid[1] = 0xff;
            for (i = 2; i < sizeof(ssid.essid); i++)
                  ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
            ret = set_essid(usbdev, &ssid);
      }
      return ret;
}


static int set_auth_mode(struct usbnet *usbdev, int wpa_version, int authalg)
{
      struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
      __le32 tmp;
      int auth_mode, ret;

      devdbg(usbdev, "set_auth_mode: wpa_version=0x%x authalg=0x%x "
            "keymgmt=0x%x", wpa_version, authalg, priv->wpa_keymgmt);

      if (wpa_version & IW_AUTH_WPA_VERSION_WPA2) {
            if (priv->wpa_keymgmt & IW_AUTH_KEY_MGMT_802_1X)
                  auth_mode = NDIS_80211_AUTH_WPA2;
            else
                  auth_mode = NDIS_80211_AUTH_WPA2_PSK;
      } else if (wpa_version & IW_AUTH_WPA_VERSION_WPA) {
            if (priv->wpa_keymgmt & IW_AUTH_KEY_MGMT_802_1X)
                  auth_mode = NDIS_80211_AUTH_WPA;
            else if (priv->wpa_keymgmt & IW_AUTH_KEY_MGMT_PSK)
                  auth_mode = NDIS_80211_AUTH_WPA_PSK;
            else
                  auth_mode = NDIS_80211_AUTH_WPA_NONE;
      } else if (authalg & IW_AUTH_ALG_SHARED_KEY) {
            if (authalg & IW_AUTH_ALG_OPEN_SYSTEM)
                  auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
            else
                  auth_mode = NDIS_80211_AUTH_SHARED;
      } else
            auth_mode = NDIS_80211_AUTH_OPEN;

      tmp = cpu_to_le32(auth_mode);
      ret = rndis_set_oid(usbdev, OID_802_11_AUTHENTICATION_MODE, &tmp,
                                                sizeof(tmp));
      if (ret != 0) {
            devwarn(usbdev, "setting auth mode failed (%08X)", ret);
            return ret;
      }

      priv->wpa_version = wpa_version;
      priv->wpa_authalg = authalg;
      return 0;
}


static int set_priv_filter(struct usbnet *usbdev)
{
      struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
      __le32 tmp;

      devdbg(usbdev, "set_priv_filter: wpa_version=0x%x", priv->wpa_version);

      if (priv->wpa_version & IW_AUTH_WPA_VERSION_WPA2 ||
          priv->wpa_version & IW_AUTH_WPA_VERSION_WPA)
            tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
      else
            tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);

      return rndis_set_oid(usbdev, OID_802_11_PRIVACY_FILTER, &tmp,
                                                sizeof(tmp));
}


static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
{
      struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
      __le32 tmp;
      int encr_mode, ret;

      devdbg(usbdev, "set_encr_mode: cipher_pair=0x%x cipher_group=0x%x",
            pairwise,
            groupwise);

      if (pairwise & IW_AUTH_CIPHER_CCMP)
            encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
      else if (pairwise & IW_AUTH_CIPHER_TKIP)
            encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
      else if (pairwise &
             (IW_AUTH_CIPHER_WEP40 | IW_AUTH_CIPHER_WEP104))
            encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
      else if (groupwise & IW_AUTH_CIPHER_CCMP)
            encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
      else if (groupwise & IW_AUTH_CIPHER_TKIP)
            encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
      else
            encr_mode = NDIS_80211_ENCR_DISABLED;

      tmp = cpu_to_le32(encr_mode);
      ret = rndis_set_oid(usbdev, OID_802_11_ENCRYPTION_STATUS, &tmp,
                                                sizeof(tmp));
      if (ret != 0) {
            devwarn(usbdev, "setting encr mode failed (%08X)", ret);
            return ret;
      }

      priv->wpa_cipher_pair = pairwise;
      priv->wpa_cipher_group = groupwise;
      return 0;
}


static int set_assoc_params(struct usbnet *usbdev)
{
      struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);

      set_auth_mode(usbdev, priv->wpa_version, priv->wpa_authalg);
      set_priv_filter(usbdev);
      set_encr_mode(usbdev, priv->wpa_cipher_pair, priv->wpa_cipher_group);

      return 0;
}


static int set_infra_mode(struct usbnet *usbdev, int mode)
{
      struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
      __le32 tmp;
      int ret, i;

      devdbg(usbdev, "set_infra_mode: infra_mode=0x%x", priv->infra_mode);

      tmp = cpu_to_le32(mode);
      ret = rndis_set_oid(usbdev, OID_802_11_INFRASTRUCTURE_MODE, &tmp,
                                                sizeof(tmp));
      if (ret != 0) {
            devwarn(usbdev, "setting infra mode failed (%08X)", ret);
            return ret;
      }

      /* NDIS drivers clear keys when infrastructure mode is
       * changed. But Linux tools assume otherwise. So set the
       * keys */
      if (priv->wpa_keymgmt == 0 ||
            priv->wpa_keymgmt == IW_AUTH_KEY_MGMT_802_1X) {
            for (i = 0; i < 4; i++) {
                  if (priv->encr_key_len[i] > 0 && !priv->encr_key_wpa[i])
                        add_wep_key(usbdev, priv->encr_keys[i],
                                    priv->encr_key_len[i], i);
            }
      }

      priv->infra_mode = mode;
      return 0;
}


static void set_default_iw_params(struct usbnet *usbdev)
{
      struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);

      priv->wpa_keymgmt = 0;
      priv->wpa_version = 0;

      set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
      set_auth_mode(usbdev, IW_AUTH_WPA_VERSION_DISABLED,
                        IW_AUTH_ALG_OPEN_SYSTEM);
      set_priv_filter(usbdev);
      set_encr_mode(usbdev, IW_AUTH_CIPHER_NONE, IW_AUTH_CIPHER_NONE);
}


static int deauthenticate(struct usbnet *usbdev)
{
      int ret;

      ret = disassociate(usbdev, 1);
      set_default_iw_params(usbdev);
      return ret;
}


/* index must be 0 - N, as per NDIS  */
static int add_wep_key(struct usbnet *usbdev, char *key, int key_len, int index)
{
      struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
      struct ndis_80211_wep_key ndis_key;
      int ret;

      if (key_len <= 0 || key_len > 32 || index < 0 || index >= 4)
            return -EINVAL;

      memset(&ndis_key, 0, sizeof(ndis_key));

      ndis_key.size = cpu_to_le32(sizeof(ndis_key));
      ndis_key.length = cpu_to_le32(key_len);
      ndis_key.index = cpu_to_le32(index);
      memcpy(&ndis_key.material, key, key_len);

      if (index == priv->encr_tx_key_index) {
            ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
            ret = set_encr_mode(usbdev, IW_AUTH_CIPHER_WEP104,
                                    IW_AUTH_CIPHER_NONE);
            if (ret)
                  devwarn(usbdev, "encryption couldn't be enabled (%08X)",
                                                      ret);
      }

      ret = rndis_set_oid(usbdev, OID_802_11_ADD_WEP, &ndis_key,
                                          sizeof(ndis_key));
      if (ret != 0) {
            devwarn(usbdev, "adding encryption key %d failed (%08X)",
                                          index+1, ret);
            return ret;
      }

      priv->encr_key_len[index] = key_len;
      priv->encr_key_wpa[index] = 0;
      memcpy(&priv->encr_keys[index], key, key_len);

      return 0;
}


static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
                  int index, const struct sockaddr *addr,
                  const u8 *rx_seq, int alg, int flags)
{
      struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
      struct ndis_80211_key ndis_key;
      int ret;

      if (index < 0 || index >= 4)
            return -EINVAL;
      if (key_len > sizeof(ndis_key.material) || key_len < 0)
            return -EINVAL;
      if ((flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) && !rx_seq)
            return -EINVAL;
      if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !addr)
            return -EINVAL;

      devdbg(usbdev, "add_wpa_key(%i): flags:%i%i%i", index,
                  !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
                  !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
                  !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));

      memset(&ndis_key, 0, sizeof(ndis_key));

      ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
                        sizeof(ndis_key.material) + key_len);
      ndis_key.length = cpu_to_le32(key_len);
      ndis_key.index = cpu_to_le32(index) | flags;

      if (alg == IW_ENCODE_ALG_TKIP && key_len == 32) {
            /* wpa_supplicant gives us the Michael MIC RX/TX keys in
             * different order than NDIS spec, so swap the order here. */
            memcpy(ndis_key.material, key, 16);
            memcpy(ndis_key.material + 16, key + 24, 8);
            memcpy(ndis_key.material + 24, key + 16, 8);
      } else
            memcpy(ndis_key.material, key, key_len);

      if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
            memcpy(ndis_key.rsc, rx_seq, 6);

      if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
            /* pairwise key */
            memcpy(ndis_key.bssid, addr->sa_data, ETH_ALEN);
      } else {
            /* group key */
            if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
                  memset(ndis_key.bssid, 0xff, ETH_ALEN);
            else
                  get_bssid(usbdev, ndis_key.bssid);
      }

      ret = rndis_set_oid(usbdev, OID_802_11_ADD_KEY, &ndis_key,
                              le32_to_cpu(ndis_key.size));
      devdbg(usbdev, "add_wpa_key: OID_802_11_ADD_KEY -> %08X", ret);
      if (ret != 0)
            return ret;

      priv->encr_key_len[index] = key_len;
      priv->encr_key_wpa[index] = 1;

      if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
            priv->encr_tx_key_index = index;

      return 0;
}


/* remove_key is for both wep and wpa */
static int remove_key(struct usbnet *usbdev, int index, u8 bssid[ETH_ALEN])
{
      struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
      struct ndis_80211_remove_key remove_key;
      __le32 keyindex;
      int ret;

      if (priv->encr_key_len[index] == 0)
            return 0;

      priv->encr_key_len[index] = 0;
      priv->encr_key_wpa[index] = 0;
      memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));

      if (priv->wpa_cipher_pair == IW_AUTH_CIPHER_TKIP ||
          priv->wpa_cipher_pair == IW_AUTH_CIPHER_CCMP ||
          priv->wpa_cipher_group == IW_AUTH_CIPHER_TKIP ||
          priv->wpa_cipher_group == IW_AUTH_CIPHER_CCMP) {
            remove_key.size = cpu_to_le32(sizeof(remove_key));
            remove_key.index = cpu_to_le32(index);
            if (bssid) {
                  /* pairwise key */
                  if (memcmp(bssid, ffff_bssid, ETH_ALEN) != 0)
                        remove_key.index |=
                              NDIS_80211_ADDKEY_PAIRWISE_KEY;
                  memcpy(remove_key.bssid, bssid,
                              sizeof(remove_key.bssid));
            } else
                  memset(remove_key.bssid, 0xff,
                                    sizeof(remove_key.bssid));

            ret = rndis_set_oid(usbdev, OID_802_11_REMOVE_KEY, &remove_key,
                                          sizeof(remove_key));
            if (ret != 0)
                  return ret;
      } else {
            keyindex = cpu_to_le32(index);
            ret = rndis_set_oid(usbdev, OID_802_11_REMOVE_WEP, &keyindex,
                                          sizeof(keyindex));
            if (ret != 0) {
                  devwarn(usbdev,
                        "removing encryption key %d failed (%08X)",
                        index, ret);
                  return ret;
            }
      }

      /* if it is transmit key, disable encryption */
      if (index == priv->encr_tx_key_index)
            set_encr_mode(usbdev, IW_AUTH_CIPHER_NONE, IW_AUTH_CIPHER_NONE);

      return 0;
}


static void set_multicast_list(struct usbnet *usbdev)
{
      struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
      struct dev_mc_list *mclist;
      __le32 filter;
      int ret, i, size;
      char *buf;

      filter = RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST;

      if (usbdev->net->flags & IFF_PROMISC) {
            filter |= RNDIS_PACKET_TYPE_PROMISCUOUS |
                  RNDIS_PACKET_TYPE_ALL_LOCAL;
      } else if (usbdev->net->flags & IFF_ALLMULTI ||
               usbdev->net->mc_count > priv->multicast_size) {
            filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
      } else if (usbdev->net->mc_count > 0) {
            size = min(priv->multicast_size, usbdev->net->mc_count);
            buf = kmalloc(size * ETH_ALEN, GFP_KERNEL);
            if (!buf) {
                  devwarn(usbdev,
                        "couldn't alloc %d bytes of memory",
                        size * ETH_ALEN);
                  return;
            }

            mclist = usbdev->net->mc_list;
            for (i = 0; i < size && mclist; mclist = mclist->next) {
                  if (mclist->dmi_addrlen != ETH_ALEN)
                        continue;

                  memcpy(buf + i * ETH_ALEN, mclist->dmi_addr, ETH_ALEN);
                  i++;
            }

            ret = rndis_set_oid(usbdev, OID_802_3_MULTICAST_LIST, buf,
                                                i * ETH_ALEN);
            if (ret == 0 && i > 0)
                  filter |= RNDIS_PACKET_TYPE_MULTICAST;
            else
                  filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;

            devdbg(usbdev, "OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d",
                                    i, priv->multicast_size, ret);

            kfree(buf);
      }

      ret = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &filter,
                                          sizeof(filter));
      if (ret < 0) {
            devwarn(usbdev, "couldn't set packet filter: %08x",
                                          le32_to_cpu(filter));
      }

      devdbg(usbdev, "OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d",
                                    le32_to_cpu(filter), ret);
}


/*
 * cfg80211 ops
 */
static int rndis_change_virtual_intf(struct wiphy *wiphy, int ifindex,
                              enum nl80211_iftype type, u32 *flags,
                              struct vif_params *params)
{
      struct net_device *dev;
      struct usbnet *usbdev;
      int mode;

      /* we're under RTNL */
      dev = __dev_get_by_index(&init_net, ifindex);
      if (!dev)
            return -ENODEV;
      usbdev = netdev_priv(dev);

      switch (type) {
      case NL80211_IFTYPE_ADHOC:
            mode = NDIS_80211_INFRA_ADHOC;
            break;
      case NL80211_IFTYPE_STATION:
            mode = NDIS_80211_INFRA_INFRA;
            break;
      default:
            return -EINVAL;
      }

      return set_infra_mode(usbdev, mode);
}


#define SCAN_DELAY_JIFFIES (HZ)
static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
                  struct cfg80211_scan_request *request)
{
      struct usbnet *usbdev = netdev_priv(dev);
      struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
      int ret;
      __le32 tmp;

      devdbg(usbdev, "cfg80211.scan");

      if (!request)
            return -EINVAL;

      if (priv->scan_request && priv->scan_request != request)
            return -EBUSY;

      priv->scan_request = request;

      tmp = cpu_to_le32(1);
      ret = rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
                                          sizeof(tmp));
      if (ret == 0) {
            /* Wait before retrieving scan results from device */
            queue_delayed_work(priv->workqueue, &priv->scan_work,
                  SCAN_DELAY_JIFFIES);
      }

      return ret;
}


static struct cfg80211_bss *rndis_bss_info_update(struct usbnet *usbdev,
                              struct ndis_80211_bssid_ex *bssid)
{
      struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
      struct ieee80211_channel *channel;
      s32 signal;
      u64 timestamp;
      u16 capability;
      u16 beacon_interval;
      struct ndis_80211_fixed_ies *fixed;
      int ie_len, bssid_len;
      u8 *ie;

      /* parse bssid structure */
      bssid_len = le32_to_cpu(bssid->length);

      if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
                  sizeof(struct ndis_80211_fixed_ies))
            return NULL;

      fixed = (struct ndis_80211_fixed_ies *)bssid->ies;

      ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
      ie_len = min(bssid_len - (int)sizeof(*bssid),
                              (int)le32_to_cpu(bssid->ie_length));
      ie_len -= sizeof(struct ndis_80211_fixed_ies);
      if (ie_len < 0)
            return NULL;

      /* extract data for cfg80211_inform_bss */
      channel = ieee80211_get_channel(priv->wdev.wiphy,
                  KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
      if (!channel)
            return NULL;

      signal = level_to_qual(le32_to_cpu(bssid->rssi));
      timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
      capability = le16_to_cpu(fixed->capabilities);
      beacon_interval = le16_to_cpu(fixed->beacon_interval);

      return cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid->mac,
            timestamp, capability, beacon_interval, ie, ie_len, signal,
            GFP_KERNEL);
}


static int rndis_check_bssid_list(struct usbnet *usbdev)
{
      void *buf = NULL;
      struct ndis_80211_bssid_list_ex *bssid_list;
      struct ndis_80211_bssid_ex *bssid;
      int ret = -EINVAL, len, count, bssid_len;

      devdbg(usbdev, "check_bssid_list");

      len = CONTROL_BUFFER_SIZE;
      buf = kmalloc(len, GFP_KERNEL);
      if (!buf) {
            ret = -ENOMEM;
            goto out;
      }

      ret = rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &len);
      if (ret != 0)
            goto out;

      bssid_list = buf;
      bssid = bssid_list->bssid;
      bssid_len = le32_to_cpu(bssid->length);
      count = le32_to_cpu(bssid_list->num_items);
      devdbg(usbdev, "check_bssid_list: %d BSSIDs found", count);

      while (count && ((void *)bssid + bssid_len) <= (buf + len)) {
            rndis_bss_info_update(usbdev, bssid);

            bssid = (void *)bssid + bssid_len;
            bssid_len = le32_to_cpu(bssid->length);
            count--;
      }

out:
      kfree(buf);
      return ret;
}


static void rndis_get_scan_results(struct work_struct *work)
{
      struct rndis_wlan_private *priv =
            container_of(work, struct rndis_wlan_private, scan_work.work);
      struct usbnet *usbdev = priv->usbdev;
      int ret;

      devdbg(usbdev, "get_scan_results");

      ret = rndis_check_bssid_list(usbdev);

      cfg80211_scan_done(priv->scan_request, ret < 0);

      priv->scan_request = NULL;
}


/*
 * wireless extension handlers
 */

static int rndis_iw_commit(struct net_device *dev,
    struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
      /* dummy op */
      return 0;
}


static int rndis_iw_set_essid(struct net_device *dev,
    struct iw_request_info *info, union iwreq_data *wrqu, char *essid)
{
      struct ndis_80211_ssid ssid;
      int length = wrqu->essid.length;
      struct usbnet *usbdev = netdev_priv(dev);

      devdbg(usbdev, "SIOCSIWESSID: [flags:%d,len:%d] '%.32s'",
            wrqu->essid.flags, wrqu->essid.length, essid);

      if (length > NDIS_802_11_LENGTH_SSID)
            length = NDIS_802_11_LENGTH_SSID;

      ssid.length = cpu_to_le32(length);
      if (length > 0)
            memcpy(ssid.essid, essid, length);
      else
            memset(ssid.essid, 0, NDIS_802_11_LENGTH_SSID);

      set_assoc_params(usbdev);

      if (!wrqu->essid.flags || length == 0)
            return disassociate(usbdev, 1);
      else
            return set_essid(usbdev, &ssid);
}


static int rndis_iw_get_essid(struct net_device *dev,
    struct iw_request_info *info, union iwreq_data *wrqu, char *essid)
{
      struct ndis_80211_ssid ssid;
      struct usbnet *usbdev = netdev_priv(dev);
      int ret;

      ret = get_essid(usbdev, &ssid);

      if (ret == 0 && le32_to_cpu(ssid.length) > 0) {
            wrqu->essid.flags = 1;
            wrqu->essid.length = le32_to_cpu(ssid.length);
            memcpy(essid, ssid.essid, wrqu->essid.length);
            essid[wrqu->essid.length] = 0;
      } else {
            memset(essid, 0, sizeof(NDIS_802_11_LENGTH_SSID));
            wrqu->essid.flags = 0;
            wrqu->essid.length = 0;
      }
      devdbg(usbdev, "SIOCGIWESSID: %s", essid);
      return ret;
}


static int rndis_iw_get_bssid(struct net_device *dev,
    struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
      struct usbnet *usbdev = netdev_priv(dev);
      unsigned char bssid[ETH_ALEN];
      int ret;

      ret = get_bssid(usbdev, bssid);

      if (ret == 0)
            devdbg(usbdev, "SIOCGIWAP: %pM", bssid);
      else
            devdbg(usbdev, "SIOCGIWAP: <not associated>");

      wrqu->ap_addr.sa_family = ARPHRD_ETHER;
      memcpy(wrqu->ap_addr.sa_data, bssid, ETH_ALEN);

      return ret;
}


static int rndis_iw_set_bssid(struct net_device *dev,
    struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
      struct usbnet *usbdev = netdev_priv(dev);
      u8 *bssid = (u8 *)wrqu->ap_addr.sa_data;
      int ret;

      devdbg(usbdev, "SIOCSIWAP: %pM", bssid);

      ret = rndis_set_oid(usbdev, OID_802_11_BSSID, bssid, ETH_ALEN);

      /* user apps may set ap's mac address, which is not required;
       * they may fail to work if this function fails, so return
       * success */
      if (ret)
            devwarn(usbdev, "setting AP mac address failed (%08X)", ret);

      return 0;
}


static int rndis_iw_set_auth(struct net_device *dev,
    struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
      struct iw_param *p = &wrqu->param;
      struct usbnet *usbdev = netdev_priv(dev);
      struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
      int ret = -ENOTSUPP;

      switch (p->flags & IW_AUTH_INDEX) {
      case IW_AUTH_WPA_VERSION:
            devdbg(usbdev, "SIOCSIWAUTH: WPA_VERSION, %08x", p->value);
            priv->wpa_version = p->value;
            ret = 0;
            break;

      case IW_AUTH_CIPHER_PAIRWISE:
            devdbg(usbdev, "SIOCSIWAUTH: CIPHER_PAIRWISE, %08x", p->value);
            priv->wpa_cipher_pair = p->value;
            ret = 0;
            break;

      case IW_AUTH_CIPHER_GROUP:
            devdbg(usbdev, "SIOCSIWAUTH: CIPHER_GROUP, %08x", p->value);
            priv->wpa_cipher_group = p->value;
            ret = 0;
            break;

      case IW_AUTH_KEY_MGMT:
            devdbg(usbdev, "SIOCSIWAUTH: KEY_MGMT, %08x", p->value);
            priv->wpa_keymgmt = p->value;
            ret = 0;
            break;

      case IW_AUTH_TKIP_COUNTERMEASURES:
            devdbg(usbdev, "SIOCSIWAUTH: TKIP_COUNTERMEASURES, %08x",
                                                p->value);
            ret = 0;
            break;

      case IW_AUTH_DROP_UNENCRYPTED:
            devdbg(usbdev, "SIOCSIWAUTH: DROP_UNENCRYPTED, %08x", p->value);
            ret = 0;
            break;

      case IW_AUTH_80211_AUTH_ALG:
            devdbg(usbdev, "SIOCSIWAUTH: 80211_AUTH_ALG, %08x", p->value);
            priv->wpa_authalg = p->value;
            ret = 0;
            break;

      case IW_AUTH_WPA_ENABLED:
            devdbg(usbdev, "SIOCSIWAUTH: WPA_ENABLED, %08x", p->value);
            if (wrqu->param.value)
                  deauthenticate(usbdev);
            ret = 0;
            break;

      case IW_AUTH_RX_UNENCRYPTED_EAPOL:
            devdbg(usbdev, "SIOCSIWAUTH: RX_UNENCRYPTED_EAPOL, %08x",
                                                p->value);
            ret = 0;
            break;

      case IW_AUTH_ROAMING_CONTROL:
            devdbg(usbdev, "SIOCSIWAUTH: ROAMING_CONTROL, %08x", p->value);
            ret = 0;
            break;

      case IW_AUTH_PRIVACY_INVOKED:
            devdbg(usbdev, "SIOCSIWAUTH: invalid cmd %d",
                        wrqu->param.flags & IW_AUTH_INDEX);
            return -EOPNOTSUPP;

      default:
            devdbg(usbdev, "SIOCSIWAUTH: UNKNOWN  %08x, %08x",
                  p->flags & IW_AUTH_INDEX, p->value);
      }
      return ret;
}


static int rndis_iw_get_auth(struct net_device *dev,
    struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
      struct iw_param *p = &wrqu->param;
      struct usbnet *usbdev = netdev_priv(dev);
      struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);

      switch (p->flags & IW_AUTH_INDEX) {
      case IW_AUTH_WPA_VERSION:
            p->value = priv->wpa_version;
            break;
      case IW_AUTH_CIPHER_PAIRWISE:
            p->value = priv->wpa_cipher_pair;
            break;
      case IW_AUTH_CIPHER_GROUP:
            p->value = priv->wpa_cipher_group;
            break;
      case IW_AUTH_KEY_MGMT:
            p->value = priv->wpa_keymgmt;
            break;
      case IW_AUTH_80211_AUTH_ALG:
            p->value = priv->wpa_authalg;
            break;
      default:
            devdbg(usbdev, "SIOCGIWAUTH: invalid cmd %d",
                        wrqu->param.flags & IW_AUTH_INDEX);
            return -EOPNOTSUPP;
      }
      return 0;
}


static int rndis_iw_set_encode(struct net_device *dev,
    struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
      struct usbnet *usbdev = netdev_priv(dev);
      struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
      int ret, index, key_len;
      u8 *key;

      index = (wrqu->encoding.flags & IW_ENCODE_INDEX);

      /* iwconfig gives index as 1 - N */
      if (index > 0)
            index--;
      else
            index = priv->encr_tx_key_index;

      if (index < 0 || index >= 4) {
            devwarn(usbdev, "encryption index out of range (%u)", index);
            return -EINVAL;
      }

      /* remove key if disabled */
      if (wrqu->data.flags & IW_ENCODE_DISABLED) {
            if (remove_key(usbdev, index, NULL))
                  return -EINVAL;
            else
                  return 0;
      }

      /* global encryption state (for all keys) */
      if (wrqu->data.flags & IW_ENCODE_OPEN)
            ret = set_auth_mode(usbdev, IW_AUTH_WPA_VERSION_DISABLED,
                                    IW_AUTH_ALG_OPEN_SYSTEM);
      else /*if (wrqu->data.flags & IW_ENCODE_RESTRICTED)*/
            ret = set_auth_mode(usbdev, IW_AUTH_WPA_VERSION_DISABLED,
                                    IW_AUTH_ALG_SHARED_KEY);
      if (ret != 0)
            return ret;

      if (wrqu->data.length > 0) {
            key_len = wrqu->data.length;
            key = extra;
      } else {
            /* must be set as tx key */
            if (priv->encr_key_len[index] == 0)
                  return -EINVAL;
            key_len = priv->encr_key_len[index];
            key = priv->encr_keys[index];
            priv->encr_tx_key_index = index;
      }

      if (add_wep_key(usbdev, key, key_len, index) != 0)
            return -EINVAL;

      if (index == priv->encr_tx_key_index)
            /* ndis drivers want essid to be set after setting encr */
            set_essid(usbdev, &priv->essid);

      return 0;
}


static int rndis_iw_set_encode_ext(struct net_device *dev,
    struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
      struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
      struct usbnet *usbdev = netdev_priv(dev);
      struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
      int keyidx, flags;

      keyidx = wrqu->encoding.flags & IW_ENCODE_INDEX;

      /* iwconfig gives index as 1 - N */
      if (keyidx)
            keyidx--;
      else
            keyidx = priv->encr_tx_key_index;

      if (keyidx < 0 || keyidx >= 4)
            return -EINVAL;

      if (ext->alg == WPA_ALG_WEP) {
            if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY)
                  priv->encr_tx_key_index = keyidx;
            return add_wep_key(usbdev, ext->key, ext->key_len, keyidx);
      }

      if ((wrqu->encoding.flags & IW_ENCODE_DISABLED) ||
          ext->alg == IW_ENCODE_ALG_NONE || ext->key_len == 0)
            return remove_key(usbdev, keyidx, NULL);

      flags = 0;
      if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID)
            flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
      if (!(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY))
            flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY;
      if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY)
            flags |= NDIS_80211_ADDKEY_TRANSMIT_KEY;

      return add_wpa_key(usbdev, ext->key, ext->key_len, keyidx, &ext->addr,
                        ext->rx_seq, ext->alg, flags);
}


static int rndis_iw_set_genie(struct net_device *dev,
    struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
      struct usbnet *usbdev = netdev_priv(dev);
      struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
      int ret = 0;

#ifdef DEBUG
      int j;
      u8 *gie = extra;
      for (j = 0; j < wrqu->data.length; j += 8)
            devdbg(usbdev,
                  "SIOCSIWGENIE %04x - "
                  "%02x %02x %02x %02x %02x %02x %02x %02x", j,
                  gie[j + 0], gie[j + 1], gie[j + 2], gie[j + 3],
                  gie[j + 4], gie[j + 5], gie[j + 6], gie[j + 7]);
#endif
      /* clear existing IEs */
      if (priv->wpa_ie_len) {
            kfree(priv->wpa_ie);
            priv->wpa_ie_len = 0;
      }

      /* set new IEs */
      priv->wpa_ie = kmalloc(wrqu->data.length, GFP_KERNEL);
      if (priv->wpa_ie) {
            priv->wpa_ie_len = wrqu->data.length;
            memcpy(priv->wpa_ie, extra, priv->wpa_ie_len);
      } else
            ret = -ENOMEM;
      return ret;
}


static int rndis_iw_get_genie(struct net_device *dev,
    struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
      struct usbnet *usbdev = netdev_priv(dev);
      struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);

      devdbg(usbdev, "SIOCGIWGENIE");

      if (priv->wpa_ie_len == 0 || priv->wpa_ie == NULL) {
            wrqu->data.length = 0;
            return 0;
      }

      if (wrqu->data.length < priv->wpa_ie_len)
            return -E2BIG;

      wrqu->data.length = priv->wpa_ie_len;
      memcpy(extra, priv->wpa_ie, priv->wpa_ie_len);

      return 0;
}


static int rndis_iw_set_rts(struct net_device *dev,
    struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
      struct usbnet *usbdev = netdev_priv(dev);
      __le32 tmp;
      devdbg(usbdev, "SIOCSIWRTS");

      tmp = cpu_to_le32(wrqu->rts.value);
      return rndis_set_oid(usbdev, OID_802_11_RTS_THRESHOLD, &tmp,
                                                sizeof(tmp));
}


static int rndis_iw_get_rts(struct net_device *dev,
    struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
      struct usbnet *usbdev = netdev_priv(dev);
      __le32 tmp;
      int len, ret;

      len = sizeof(tmp);
      ret = rndis_query_oid(usbdev, OID_802_11_RTS_THRESHOLD, &tmp, &len);
      if (ret == 0) {
            wrqu->rts.value = le32_to_cpu(tmp);
            wrqu->rts.flags = 1;
            wrqu->rts.disabled = 0;
      }

      devdbg(usbdev, "SIOCGIWRTS: %d", wrqu->rts.value);

      return ret;
}


static int rndis_iw_set_frag(struct net_device *dev,
    struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
      struct usbnet *usbdev = netdev_priv(dev);
      __le32 tmp;

      devdbg(usbdev, "SIOCSIWFRAG");

      tmp = cpu_to_le32(wrqu->frag.value);
      return rndis_set_oid(usbdev, OID_802_11_FRAGMENTATION_THRESHOLD, &tmp,
                                                sizeof(tmp));
}


static int rndis_iw_get_frag(struct net_device *dev,
    struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
      struct usbnet *usbdev = netdev_priv(dev);
      __le32 tmp;
      int len, ret;

      len = sizeof(tmp);
      ret = rndis_query_oid(usbdev, OID_802_11_FRAGMENTATION_THRESHOLD, &tmp,
                                                      &len);
      if (ret == 0) {
            wrqu->frag.value = le32_to_cpu(tmp);
            wrqu->frag.flags = 1;
            wrqu->frag.disabled = 0;
      }
      devdbg(usbdev, "SIOCGIWFRAG: %d", wrqu->frag.value);
      return ret;
}


static int rndis_iw_set_freq(struct net_device *dev,
    struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
      struct usbnet *usbdev = netdev_priv(dev);
      struct ndis_80211_conf config;
      unsigned int dsconfig;
      int len, ret;

      /* this OID is valid only when not associated */
      if (is_associated(usbdev))
            return 0;

      dsconfig = 0;
      if (freq_to_dsconfig(&wrqu->freq, &dsconfig))
            return -EINVAL;

      len = sizeof(config);
      ret = rndis_query_oid(usbdev, OID_802_11_CONFIGURATION, &config, &len);
      if (ret != 0) {
            devdbg(usbdev, "SIOCSIWFREQ: querying configuration failed");
            return 0;
      }

      config.ds_config = cpu_to_le32(dsconfig);

      devdbg(usbdev, "SIOCSIWFREQ: %d * 10^%d", wrqu->freq.m, wrqu->freq.e);
      return rndis_set_oid(usbdev, OID_802_11_CONFIGURATION, &config,
                                                sizeof(config));
}


static int rndis_iw_get_freq(struct net_device *dev,
    struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
      struct usbnet *usbdev = netdev_priv(dev);
      struct ndis_80211_conf config;
      int len, ret;

      len = sizeof(config);
      ret = rndis_query_oid(usbdev, OID_802_11_CONFIGURATION, &config, &len);
      if (ret == 0)
            dsconfig_to_freq(le32_to_cpu(config.ds_config), &wrqu->freq);

      devdbg(usbdev, "SIOCGIWFREQ: %d", wrqu->freq.m);
      return ret;
}


static int rndis_iw_get_txpower(struct net_device *dev,
    struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
      struct usbnet *usbdev = netdev_priv(dev);
      struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
      __le32 tx_power;

      if (priv->radio_on) {
            /* fake since changing tx_power (by userlevel) not supported */
            tx_power = cpu_to_le32(get_bcm4320_power(priv));

            wrqu->txpower.flags = IW_TXPOW_MWATT;
            wrqu->txpower.value = le32_to_cpu(tx_power);
            wrqu->txpower.disabled = 0;
      } else {
            wrqu->txpower.flags = IW_TXPOW_MWATT;
            wrqu->txpower.value = 0;
            wrqu->txpower.disabled = 1;
      }

      devdbg(usbdev, "SIOCGIWTXPOW: %d", wrqu->txpower.value);

      return 0;
}


static int rndis_iw_set_txpower(struct net_device *dev,
    struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
      struct usbnet *usbdev = netdev_priv(dev);
      struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
      __le32 tx_power = 0;

      if (!wrqu->txpower.disabled) {
            if (wrqu->txpower.flags == IW_TXPOW_MWATT)
                  tx_power = cpu_to_le32(wrqu->txpower.value);
            else { /* wrqu->txpower.flags == IW_TXPOW_DBM */
                  if (wrqu->txpower.value > 20)
                        tx_power = cpu_to_le32(128);
                  else if (wrqu->txpower.value < -43)
                        tx_power = cpu_to_le32(127);
                  else {
                        signed char tmp;
                        tmp = wrqu->txpower.value;
                        tmp = -12 - tmp;
                        tmp <<= 2;
                        tx_power = cpu_to_le32((unsigned char)tmp);
                  }
            }
      }

      devdbg(usbdev, "SIOCSIWTXPOW: %d", le32_to_cpu(tx_power));

      if (le32_to_cpu(tx_power) != 0) {
            /* txpower unsupported, just turn radio on */
            if (!priv->radio_on)
                  return disassociate(usbdev, 1);
            return 0; /* all ready on */
      }

      /* tx_power == 0, turn off radio */
      return disassociate(usbdev, 0);
}


static int rndis_iw_get_rate(struct net_device *dev,
    struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
      struct usbnet *usbdev = netdev_priv(dev);
      __le32 tmp;
      int ret, len;

      len = sizeof(tmp);
      ret = rndis_query_oid(usbdev, OID_GEN_LINK_SPEED, &tmp, &len);
      if (ret == 0) {
            wrqu->bitrate.value = le32_to_cpu(tmp) * 100;
            wrqu->bitrate.disabled = 0;
            wrqu->bitrate.flags = 1;
      }
      return ret;
}


static int rndis_iw_set_mlme(struct net_device *dev,
    struct iw_request_info *info, union iwreq_data *wrqu, char *extra)
{
      struct usbnet *usbdev = netdev_priv(dev);
      struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
      struct iw_mlme *mlme = (struct iw_mlme *)extra;
      unsigned char bssid[ETH_ALEN];

      get_bssid(usbdev, bssid);

      if (memcmp(bssid, mlme->addr.sa_data, ETH_ALEN))
            return -EINVAL;

      switch (mlme->cmd) {
      case IW_MLME_DEAUTH:
            return deauthenticate(usbdev);
      case IW_MLME_DISASSOC:
            return disassociate(usbdev, priv->radio_on);
      default:
            return -EOPNOTSUPP;
      }

      return 0;
}


static struct iw_statistics *rndis_get_wireless_stats(struct net_device *dev)
{
      struct usbnet *usbdev = netdev_priv(dev);
      struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
      unsigned long flags;

      spin_lock_irqsave(&priv->stats_lock, flags);
      memcpy(&priv->iwstats, &priv->privstats, sizeof(priv->iwstats));
      spin_unlock_irqrestore(&priv->stats_lock, flags);

      return &priv->iwstats;
}


#define IW_IOCTL(x) [(x) - SIOCSIWCOMMIT]
static const iw_handler rndis_iw_handler[] =
{
      IW_IOCTL(SIOCSIWCOMMIT)    = rndis_iw_commit,
      IW_IOCTL(SIOCGIWNAME)      = (iw_handler) cfg80211_wext_giwname,
      IW_IOCTL(SIOCSIWFREQ)      = rndis_iw_set_freq,
      IW_IOCTL(SIOCGIWFREQ)      = rndis_iw_get_freq,
      IW_IOCTL(SIOCSIWMODE)      = (iw_handler) cfg80211_wext_siwmode,
      IW_IOCTL(SIOCGIWMODE)      = (iw_handler) cfg80211_wext_giwmode,
      IW_IOCTL(SIOCGIWRANGE)     = (iw_handler) cfg80211_wext_giwrange,
      IW_IOCTL(SIOCSIWAP)        = rndis_iw_set_bssid,
      IW_IOCTL(SIOCGIWAP)        = rndis_iw_get_bssid,
      IW_IOCTL(SIOCSIWSCAN)      = (iw_handler) cfg80211_wext_siwscan,
      IW_IOCTL(SIOCGIWSCAN)      = (iw_handler) cfg80211_wext_giwscan,
      IW_IOCTL(SIOCSIWESSID)     = rndis_iw_set_essid,
      IW_IOCTL(SIOCGIWESSID)     = rndis_iw_get_essid,
      IW_IOCTL(SIOCGIWRATE)      = rndis_iw_get_rate,
      IW_IOCTL(SIOCSIWRTS)       = rndis_iw_set_rts,
      IW_IOCTL(SIOCGIWRTS)       = rndis_iw_get_rts,
      IW_IOCTL(SIOCSIWFRAG)      = rndis_iw_set_frag,
      IW_IOCTL(SIOCGIWFRAG)      = rndis_iw_get_frag,
      IW_IOCTL(SIOCSIWTXPOW)     = rndis_iw_set_txpower,
      IW_IOCTL(SIOCGIWTXPOW)     = rndis_iw_get_txpower,
      IW_IOCTL(SIOCSIWENCODE)    = rndis_iw_set_encode,
      IW_IOCTL(SIOCSIWENCODEEXT) = rndis_iw_set_encode_ext,
      IW_IOCTL(SIOCSIWAUTH)      = rndis_iw_set_auth,
      IW_IOCTL(SIOCGIWAUTH)      = rndis_iw_get_auth,
      IW_IOCTL(SIOCSIWGENIE)     = rndis_iw_set_genie,
      IW_IOCTL(SIOCGIWGENIE)     = rndis_iw_get_genie,
      IW_IOCTL(SIOCSIWMLME)      = rndis_iw_set_mlme,
};

static const iw_handler rndis_wlan_private_handler[] = {
};

static const struct iw_priv_args rndis_wlan_private_args[] = {
};


static const struct iw_handler_def rndis_iw_handlers = {
      .num_standard = ARRAY_SIZE(rndis_iw_handler),
      .num_private  = ARRAY_SIZE(rndis_wlan_private_handler),
      .num_private_args = ARRAY_SIZE(rndis_wlan_private_args),
      .standard = (iw_handler *)rndis_iw_handler,
      .private  = (iw_handler *)rndis_wlan_private_handler,
      .private_args = (struct iw_priv_args *)rndis_wlan_private_args,
      .get_wireless_stats = rndis_get_wireless_stats,
};


static void rndis_wlan_worker(struct work_struct *work)
{
      struct rndis_wlan_private *priv =
            container_of(work, struct rndis_wlan_private, work);
      struct usbnet *usbdev = priv->usbdev;
      union iwreq_data evt;
      unsigned char bssid[ETH_ALEN];
      struct ndis_80211_assoc_info *info;
      int assoc_size = sizeof(*info) + IW_CUSTOM_MAX + 32;
      int ret, offset;

      if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending)) {
            netif_carrier_on(usbdev->net);

            info = kzalloc(assoc_size, GFP_KERNEL);
            if (!info)
                  goto get_bssid;

            /* Get association info IEs from device and send them back to
             * userspace. */
            ret = get_association_info(usbdev, info, assoc_size);
            if (!ret) {
                  evt.data.length = le32_to_cpu(info->req_ie_length);
                  if (evt.data.length > 0) {
                        offset = le32_to_cpu(info->offset_req_ies);
                        wireless_send_event(usbdev->net,
                              IWEVASSOCREQIE, &evt,
                              (char *)info + offset);
                  }

                  evt.data.length = le32_to_cpu(info->resp_ie_length);
                  if (evt.data.length > 0) {
                        offset = le32_to_cpu(info->offset_resp_ies);
                        wireless_send_event(usbdev->net,
                              IWEVASSOCRESPIE, &evt,
                              (char *)info + offset);
                  }
            }

            kfree(info);

get_bssid:
            ret = get_bssid(usbdev, bssid);
            if (!ret) {
                  evt.data.flags = 0;
                  evt.data.length = 0;
                  memcpy(evt.ap_addr.sa_data, bssid, ETH_ALEN);
                  wireless_send_event(usbdev->net, SIOCGIWAP, &evt, NULL);
            }
      }

      if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending)) {
            netif_carrier_off(usbdev->net);

            evt.data.flags = 0;
            evt.data.length = 0;
            memset(evt.ap_addr.sa_data, 0, ETH_ALEN);
            wireless_send_event(usbdev->net, SIOCGIWAP, &evt, NULL);
      }

      if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
            set_multicast_list(usbdev);
}

static void rndis_wlan_set_multicast_list(struct net_device *dev)
{
      struct usbnet *usbdev = netdev_priv(dev);
      struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);

      if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
            return;

      set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
      queue_work(priv->workqueue, &priv->work);
}

static void rndis_wlan_link_change(struct usbnet *usbdev, int state)
{
      struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);

      /* queue work to avoid recursive calls into rndis_command */
      set_bit(state ? WORK_LINK_UP : WORK_LINK_DOWN, &priv->work_pending);
      queue_work(priv->workqueue, &priv->work);
}


static int rndis_wlan_get_caps(struct usbnet *usbdev)
{
      struct {
            __le32      num_items;
            __le32      items[8];
      } networks_supported;
      int len, retval, i, n;
      struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);

      /* determine supported modes */
      len = sizeof(networks_supported);
      retval = rndis_query_oid(usbdev, OID_802_11_NETWORK_TYPES_SUPPORTED,
                                    &networks_supported, &len);
      if (retval >= 0) {
            n = le32_to_cpu(networks_supported.num_items);
            if (n > 8)
                  n = 8;
            for (i = 0; i < n; i++) {
                  switch (le32_to_cpu(networks_supported.items[i])) {
                  case NDIS_80211_TYPE_FREQ_HOP:
                  case NDIS_80211_TYPE_DIRECT_SEQ:
                        priv->caps |= CAP_MODE_80211B;
                        break;
                  case NDIS_80211_TYPE_OFDM_A:
                        priv->caps |= CAP_MODE_80211A;
                        break;
                  case NDIS_80211_TYPE_OFDM_G:
                        priv->caps |= CAP_MODE_80211G;
                        break;
                  }
            }
      }

      return retval;
}


#define STATS_UPDATE_JIFFIES (HZ)
static void rndis_update_wireless_stats(struct work_struct *work)
{
      struct rndis_wlan_private *priv =
            container_of(work, struct rndis_wlan_private, stats_work.work);
      struct usbnet *usbdev = priv->usbdev;
      struct iw_statistics iwstats;
      __le32 rssi, tmp;
      int len, ret, j;
      unsigned long flags;
      int update_jiffies = STATS_UPDATE_JIFFIES;
      void *buf;

      spin_lock_irqsave(&priv->stats_lock, flags);
      memcpy(&iwstats, &priv->privstats, sizeof(iwstats));
      spin_unlock_irqrestore(&priv->stats_lock, flags);

      /* only update stats when connected */
      if (!is_associated(usbdev)) {
            iwstats.qual.qual = 0;
            iwstats.qual.level = 0;
            iwstats.qual.updated = IW_QUAL_QUAL_UPDATED
                        | IW_QUAL_LEVEL_UPDATED
                        | IW_QUAL_NOISE_INVALID
                        | IW_QUAL_QUAL_INVALID
                        | IW_QUAL_LEVEL_INVALID;
            goto end;
      }

      len = sizeof(rssi);
      ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);

      devdbg(usbdev, "stats: OID_802_11_RSSI -> %d, rssi:%d", ret,
                                          le32_to_cpu(rssi));
      if (ret == 0) {
            memset(&iwstats.qual, 0, sizeof(iwstats.qual));
            iwstats.qual.qual  = level_to_qual(le32_to_cpu(rssi));
            iwstats.qual.level = level_to_qual(le32_to_cpu(rssi));
            iwstats.qual.updated = IW_QUAL_QUAL_UPDATED
                        | IW_QUAL_LEVEL_UPDATED
                        | IW_QUAL_NOISE_INVALID;
      }

      memset(&iwstats.discard, 0, sizeof(iwstats.discard));

      len = sizeof(tmp);
      ret = rndis_query_oid(usbdev, OID_GEN_XMIT_ERROR, &tmp, &len);
      if (ret == 0)
            iwstats.discard.misc += le32_to_cpu(tmp);

      len = sizeof(tmp);
      ret = rndis_query_oid(usbdev, OID_GEN_RCV_ERROR, &tmp, &len);
      if (ret == 0)
            iwstats.discard.misc += le32_to_cpu(tmp);

      len = sizeof(tmp);
      ret = rndis_query_oid(usbdev, OID_GEN_RCV_NO_BUFFER, &tmp, &len);
      if (ret == 0)
            iwstats.discard.misc += le32_to_cpu(tmp);

      /* Workaround transfer stalls on poor quality links.
       * TODO: find right way to fix these stalls (as stalls do not happen
       * with ndiswrapper/windows driver). */
      if (iwstats.qual.qual <= 25) {
            /* Decrease stats worker interval to catch stalls.
             * faster. Faster than 400-500ms causes packet loss,
             * Slower doesn't catch stalls fast enough.
             */
            j = msecs_to_jiffies(priv->param_workaround_interval);
            if (j > STATS_UPDATE_JIFFIES)
                  j = STATS_UPDATE_JIFFIES;
            else if (j <= 0)
                  j = 1;
            update_jiffies = j;

            /* Send scan OID. Use of both OIDs is required to get device
             * working.
             */
            tmp = cpu_to_le32(1);
            rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
                                                sizeof(tmp));

            len = CONTROL_BUFFER_SIZE;
            buf = kmalloc(len, GFP_KERNEL);
            if (!buf)
                  goto end;

            rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &len);
            kfree(buf);
      }
end:
      spin_lock_irqsave(&priv->stats_lock, flags);
      memcpy(&priv->privstats, &iwstats, sizeof(iwstats));
      spin_unlock_irqrestore(&priv->stats_lock, flags);

      if (update_jiffies >= HZ)
            update_jiffies = round_jiffies_relative(update_jiffies);
      else {
            j = round_jiffies_relative(update_jiffies);
            if (abs(j - update_jiffies) <= 10)
                  update_jiffies = j;
      }

      queue_delayed_work(priv->workqueue, &priv->stats_work, update_jiffies);
}


static int bcm4320a_early_init(struct usbnet *usbdev)
{
      /* bcm4320a doesn't handle configuration parameters well. Try
       * set any and you get partially zeroed mac and broken device.
       */

      return 0;
}


static int bcm4320b_early_init(struct usbnet *usbdev)
{
      struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
      char buf[8];

      /* Early initialization settings, setting these won't have effect
       * if called after generic_rndis_bind().
       */

      priv->param_country[0] = modparam_country[0];
      priv->param_country[1] = modparam_country[1];
      priv->param_country[2] = 0;
      priv->param_frameburst   = modparam_frameburst;
      priv->param_afterburner  = modparam_afterburner;
      priv->param_power_save   = modparam_power_save;
      priv->param_power_output = modparam_power_output;
      priv->param_roamtrigger  = modparam_roamtrigger;
      priv->param_roamdelta    = modparam_roamdelta;

      priv->param_country[0] = toupper(priv->param_country[0]);
      priv->param_country[1] = toupper(priv->param_country[1]);
      /* doesn't support EU as country code, use FI instead */
      if (!strcmp(priv->param_country, "EU"))
            strcpy(priv->param_country, "FI");

      if (priv->param_power_save < 0)
            priv->param_power_save = 0;
      else if (priv->param_power_save > 2)
            priv->param_power_save = 2;

      if (priv->param_power_output < 0)
            priv->param_power_output = 0;
      else if (priv->param_power_output > 3)
            priv->param_power_output = 3;

      if (priv->param_roamtrigger < -80)
            priv->param_roamtrigger = -80;
      else if (priv->param_roamtrigger > -60)
            priv->param_roamtrigger = -60;

      if (priv->param_roamdelta < 0)
            priv->param_roamdelta = 0;
      else if (priv->param_roamdelta > 2)
            priv->param_roamdelta = 2;

      if (modparam_workaround_interval < 0)
            priv->param_workaround_interval = 500;
      else
            priv->param_workaround_interval = modparam_workaround_interval;

      rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
      rndis_set_config_parameter_str(usbdev, "FrameBursting",
                              priv->param_frameburst ? "1" : "0");
      rndis_set_config_parameter_str(usbdev, "Afterburner",
                              priv->param_afterburner ? "1" : "0");
      sprintf(buf, "%d", priv->param_power_save);
      rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
      sprintf(buf, "%d", priv->param_power_output);
      rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
      sprintf(buf, "%d", priv->param_roamtrigger);
      rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
      sprintf(buf, "%d", priv->param_roamdelta);
      rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);

      return 0;
}

/* same as rndis_netdev_ops but with local multicast handler */
static const struct net_device_ops rndis_wlan_netdev_ops = {
      .ndo_open         = usbnet_open,
      .ndo_stop         = usbnet_stop,
      .ndo_start_xmit         = usbnet_start_xmit,
      .ndo_tx_timeout         = usbnet_tx_timeout,
      .ndo_set_mac_address    = eth_mac_addr,
      .ndo_validate_addr      = eth_validate_addr,
      .ndo_set_multicast_list = rndis_wlan_set_multicast_list,
};


static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
{
      struct wiphy *wiphy;
      struct rndis_wlan_private *priv;
      int retval, len;
      __le32 tmp;

      /* allocate wiphy and rndis private data
       * NOTE: We only support a single virtual interface, so wiphy
       * and wireless_dev are somewhat synonymous for this device.
       */
      wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
      if (!wiphy)
            return -ENOMEM;

      priv = wiphy_priv(wiphy);
      usbdev->net->ieee80211_ptr = &priv->wdev;
      priv->wdev.wiphy = wiphy;
      priv->wdev.iftype = NL80211_IFTYPE_STATION;

      /* These have to be initialized before calling generic_rndis_bind().
       * Otherwise we'll be in big trouble in rndis_wlan_early_init().
       */
      usbdev->driver_priv = priv;
      usbdev->net->wireless_handlers = &rndis_iw_handlers;
      priv->usbdev = usbdev;

      mutex_init(&priv->command_lock);
      spin_lock_init(&priv->stats_lock);

      /* because rndis_command() sleeps we need to use workqueue */
      priv->workqueue = create_singlethread_workqueue("rndis_wlan");
      INIT_WORK(&priv->work, rndis_wlan_worker);
      INIT_DELAYED_WORK(&priv->stats_work, rndis_update_wireless_stats);
      INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);

      /* try bind rndis_host */
      retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
      if (retval < 0)
            goto fail;

      /* generic_rndis_bind set packet filter to multicast_all+
       * promisc mode which doesn't work well for our devices (device
       * picks up rssi to closest station instead of to access point).
       *
       * rndis_host wants to avoid all OID as much as possible
       * so do promisc/multicast handling in rndis_wlan.
       */
      usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;

      tmp = RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST;
      retval = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &tmp,
                                                sizeof(tmp));

      len = sizeof(tmp);
      retval = rndis_query_oid(usbdev, OID_802_3_MAXIMUM_LIST_SIZE, &tmp,
                                                &len);
      priv->multicast_size = le32_to_cpu(tmp);
      if (retval < 0 || priv->multicast_size < 0)
            priv->multicast_size = 0;
      if (priv->multicast_size > 0)
            usbdev->net->flags |= IFF_MULTICAST;
      else
            usbdev->net->flags &= ~IFF_MULTICAST;

      priv->iwstats.qual.qual = 0;
      priv->iwstats.qual.level = 0;
      priv->iwstats.qual.updated = IW_QUAL_QUAL_UPDATED
                              | IW_QUAL_LEVEL_UPDATED
                              | IW_QUAL_NOISE_INVALID
                              | IW_QUAL_QUAL_INVALID
                              | IW_QUAL_LEVEL_INVALID;

      /* fill-out wiphy structure and register w/ cfg80211 */
      memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
      wiphy->privid = rndis_wiphy_privid;
      wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
                              | BIT(NL80211_IFTYPE_ADHOC);
      wiphy->max_scan_ssids = 1;

      /* TODO: fill-out band information based on priv->caps */
      rndis_wlan_get_caps(usbdev);

      memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
      memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
      priv->band.channels = priv->channels;
      priv->band.n_channels = ARRAY_SIZE(rndis_channels);
      priv->band.bitrates = priv->rates;
      priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
      wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
      wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;

      set_wiphy_dev(wiphy, &usbdev->udev->dev);

      if (wiphy_register(wiphy)) {
            retval = -ENODEV;
            goto fail;
      }

      set_default_iw_params(usbdev);

      /* turn radio on */
      priv->radio_on = 1;
      disassociate(usbdev, 1);
      netif_carrier_off(usbdev->net);

      queue_delayed_work(priv->workqueue, &priv->stats_work,
            round_jiffies_relative(STATS_UPDATE_JIFFIES));

      return 0;

fail:
      cancel_delayed_work_sync(&priv->stats_work);
      cancel_delayed_work_sync(&priv->scan_work);
      cancel_work_sync(&priv->work);
      flush_workqueue(priv->workqueue);
      destroy_workqueue(priv->workqueue);

      wiphy_free(wiphy);
      return retval;
}


static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
{
      struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);

      /* turn radio off */
      disassociate(usbdev, 0);

      cancel_delayed_work_sync(&priv->stats_work);
      cancel_delayed_work_sync(&priv->scan_work);
      cancel_work_sync(&priv->work);
      flush_workqueue(priv->workqueue);
      destroy_workqueue(priv->workqueue);

      if (priv && priv->wpa_ie_len)
            kfree(priv->wpa_ie);

      rndis_unbind(usbdev, intf);

      wiphy_unregister(priv->wdev.wiphy);
      wiphy_free(priv->wdev.wiphy);
}


static int rndis_wlan_reset(struct usbnet *usbdev)
{
      return deauthenticate(usbdev);
}


static const struct driver_info     bcm4320b_info = {
      .description =    "Wireless RNDIS device, BCM4320b based",
      .flags =    FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT,
      .bind =           rndis_wlan_bind,
      .unbind =   rndis_wlan_unbind,
      .status =   rndis_status,
      .rx_fixup = rndis_rx_fixup,
      .tx_fixup = rndis_tx_fixup,
      .reset =    rndis_wlan_reset,
      .early_init =     bcm4320b_early_init,
      .link_change =    rndis_wlan_link_change,
};

static const struct driver_info     bcm4320a_info = {
      .description =    "Wireless RNDIS device, BCM4320a based",
      .flags =    FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT,
      .bind =           rndis_wlan_bind,
      .unbind =   rndis_wlan_unbind,
      .status =   rndis_status,
      .rx_fixup = rndis_rx_fixup,
      .tx_fixup = rndis_tx_fixup,
      .reset =    rndis_wlan_reset,
      .early_init =     bcm4320a_early_init,
      .link_change =    rndis_wlan_link_change,
};

static const struct driver_info rndis_wlan_info = {
      .description =    "Wireless RNDIS device",
      .flags =    FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT,
      .bind =           rndis_wlan_bind,
      .unbind =   rndis_wlan_unbind,
      .status =   rndis_status,
      .rx_fixup = rndis_rx_fixup,
      .tx_fixup = rndis_tx_fixup,
      .reset =    rndis_wlan_reset,
      .early_init =     bcm4320a_early_init,
      .link_change =    rndis_wlan_link_change,
};

/*-------------------------------------------------------------------------*/

static const struct usb_device_id products [] = {
#define     RNDIS_MASTER_INTERFACE \
      .bInterfaceClass  = USB_CLASS_COMM, \
      .bInterfaceSubClass     = 2 /* ACM */, \
      .bInterfaceProtocol     = 0x0ff

/* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
 * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
 */
{
      .match_flags      =   USB_DEVICE_ID_MATCH_INT_INFO
                    | USB_DEVICE_ID_MATCH_DEVICE,
      .idVendor         = 0x0411,
      .idProduct        = 0x00bc,   /* Buffalo WLI-U2-KG125S */
      RNDIS_MASTER_INTERFACE,
      .driver_info            = (unsigned long) &bcm4320b_info,
}, {
      .match_flags      =   USB_DEVICE_ID_MATCH_INT_INFO
                    | USB_DEVICE_ID_MATCH_DEVICE,
      .idVendor         = 0x0baf,
      .idProduct        = 0x011b,   /* U.S. Robotics USR5421 */
      RNDIS_MASTER_INTERFACE,
      .driver_info            = (unsigned long) &bcm4320b_info,
}, {
      .match_flags      =   USB_DEVICE_ID_MATCH_INT_INFO
                    | USB_DEVICE_ID_MATCH_DEVICE,
      .idVendor         = 0x050d,
      .idProduct        = 0x011b,   /* Belkin F5D7051 */
      RNDIS_MASTER_INTERFACE,
      .driver_info            = (unsigned long) &bcm4320b_info,
}, {
      .match_flags      =   USB_DEVICE_ID_MATCH_INT_INFO
                    | USB_DEVICE_ID_MATCH_DEVICE,
      .idVendor         = 0x1799,   /* Belkin has two vendor ids */
      .idProduct        = 0x011b,   /* Belkin F5D7051 */
      RNDIS_MASTER_INTERFACE,
      .driver_info            = (unsigned long) &bcm4320b_info,
}, {
      .match_flags      =   USB_DEVICE_ID_MATCH_INT_INFO
                    | USB_DEVICE_ID_MATCH_DEVICE,
      .idVendor         = 0x13b1,
      .idProduct        = 0x0014,   /* Linksys WUSB54GSv2 */
      RNDIS_MASTER_INTERFACE,
      .driver_info            = (unsigned long) &bcm4320b_info,
}, {
      .match_flags      =   USB_DEVICE_ID_MATCH_INT_INFO
                    | USB_DEVICE_ID_MATCH_DEVICE,
      .idVendor         = 0x13b1,
      .idProduct        = 0x0026,   /* Linksys WUSB54GSC */
      RNDIS_MASTER_INTERFACE,
      .driver_info            = (unsigned long) &bcm4320b_info,
}, {
      .match_flags      =   USB_DEVICE_ID_MATCH_INT_INFO
                    | USB_DEVICE_ID_MATCH_DEVICE,
      .idVendor         = 0x0b05,
      .idProduct        = 0x1717,   /* Asus WL169gE */
      RNDIS_MASTER_INTERFACE,
      .driver_info            = (unsigned long) &bcm4320b_info,
}, {
      .match_flags      =   USB_DEVICE_ID_MATCH_INT_INFO
                    | USB_DEVICE_ID_MATCH_DEVICE,
      .idVendor         = 0x0a5c,
      .idProduct        = 0xd11b,   /* Eminent EM4045 */
      RNDIS_MASTER_INTERFACE,
      .driver_info            = (unsigned long) &bcm4320b_info,
}, {
      .match_flags      =   USB_DEVICE_ID_MATCH_INT_INFO
                    | USB_DEVICE_ID_MATCH_DEVICE,
      .idVendor         = 0x1690,
      .idProduct        = 0x0715,   /* BT Voyager 1055 */
      RNDIS_MASTER_INTERFACE,
      .driver_info            = (unsigned long) &bcm4320b_info,
},
/* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
 * parameters available, hardware probably contain older firmware version with
 * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
 */
{
      .match_flags      =   USB_DEVICE_ID_MATCH_INT_INFO
                    | USB_DEVICE_ID_MATCH_DEVICE,
      .idVendor         = 0x13b1,
      .idProduct        = 0x000e,   /* Linksys WUSB54GSv1 */
      RNDIS_MASTER_INTERFACE,
      .driver_info            = (unsigned long) &bcm4320a_info,
}, {
      .match_flags      =   USB_DEVICE_ID_MATCH_INT_INFO
                    | USB_DEVICE_ID_MATCH_DEVICE,
      .idVendor         = 0x0baf,
      .idProduct        = 0x0111,   /* U.S. Robotics USR5420 */
      RNDIS_MASTER_INTERFACE,
      .driver_info            = (unsigned long) &bcm4320a_info,
}, {
      .match_flags      =   USB_DEVICE_ID_MATCH_INT_INFO
                    | USB_DEVICE_ID_MATCH_DEVICE,
      .idVendor         = 0x0411,
      .idProduct        = 0x004b,   /* BUFFALO WLI-USB-G54 */
      RNDIS_MASTER_INTERFACE,
      .driver_info            = (unsigned long) &bcm4320a_info,
},
/* Generic Wireless RNDIS devices that we don't have exact
 * idVendor/idProduct/chip yet.
 */
{
      /* RNDIS is MSFT's un-official variant of CDC ACM */
      USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
      .driver_info = (unsigned long) &rndis_wlan_info,
}, {
      /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
      USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
      .driver_info = (unsigned long) &rndis_wlan_info,
},
      { },        // END
};
MODULE_DEVICE_TABLE(usb, products);

static struct usb_driver rndis_wlan_driver = {
      .name =           "rndis_wlan",
      .id_table = products,
      .probe =    usbnet_probe,
      .disconnect =     usbnet_disconnect,
      .suspend =  usbnet_suspend,
      .resume =   usbnet_resume,
};

static int __init rndis_wlan_init(void)
{
      return usb_register(&rndis_wlan_driver);
}
module_init(rndis_wlan_init);

static void __exit rndis_wlan_exit(void)
{
      usb_deregister(&rndis_wlan_driver);
}
module_exit(rndis_wlan_exit);

MODULE_AUTHOR("Bjorge Dijkstra");
MODULE_AUTHOR("Jussi Kivilinna");
MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
MODULE_LICENSE("GPL");


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