Merge branch 'next' into for-linus

Prepare input updates for 6.6 merge window.

1 files changed, 3760 insertions, 0 deletions

diff --git a/drivers/net/wireless/legacy/rndis_wlan.c b/drivers/net/wireless/legacy/rndis_wlan.c
new file mode 100644
index 000000000000..712038d46bdb
--- /dev/null
+++ b/drivers/net/wireless/legacy/rndis_wlan.c
@@ -0,0 +1,3760 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Driver for RNDIS based wireless USB devices.
+ *
+ * Copyright (C) 2007 by Bjorge Dijkstra <[email protected]>
+ * Copyright (C) 2008-2009 by Jussi Kivilinna <[email protected]>
+ *
+ *  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/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/ieee80211.h>
+#include <linux/if_arp.h>
+#include <linux/ctype.h>
+#include <linux/spinlock.h>
+#include <linux/slab.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;
+module_param_named(workaround_interval, modparam_workaround_interval,
+							int, 0444);
+MODULE_PARM_DESC(workaround_interval,
+	"set stall workaround interval in msecs (0=disabled) (default: 0)");
+
+/* 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.
+ *  100% : 20 mW ~ 13dBm
+ *   75% : 15 mW ~ 12dBm
+ *   50% : 10 mW ~ 10dBm
+ *   25% :  5 mW ~  7dBm
+ */
+#define BCM4320_DEFAULT_TXPOWER_DBM_100 13
+#define BCM4320_DEFAULT_TXPOWER_DBM_75  12
+#define BCM4320_DEFAULT_TXPOWER_DBM_50  10
+#define BCM4320_DEFAULT_TXPOWER_DBM_25  7
+
+/* Known device types */
+#define RNDIS_UNKNOWN	0
+#define RNDIS_BCM4320A	1
+#define RNDIS_BCM4320B	2
+
+
+/* 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_status_type {
+	NDIS_80211_STATUSTYPE_AUTHENTICATION,
+	NDIS_80211_STATUSTYPE_MEDIASTREAMMODE,
+	NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST,
+	NDIS_80211_STATUSTYPE_RADIOSTATE,
+};
+
+enum ndis_80211_media_stream_mode {
+	NDIS_80211_MEDIA_STREAM_OFF,
+	NDIS_80211_MEDIA_STREAM_ON
+};
+
+enum ndis_80211_radio_status {
+	NDIS_80211_RADIO_STATUS_ON,
+	NDIS_80211_RADIO_STATUS_HARDWARE_OFF,
+	NDIS_80211_RADIO_STATUS_SOFTWARE_OFF,
+};
+
+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)
+};
+
+enum ndis_80211_power_mode {
+	NDIS_80211_POWER_MODE_CAM,
+	NDIS_80211_POWER_MODE_MAX_PSP,
+	NDIS_80211_POWER_MODE_FAST_PSP,
+};
+
+enum ndis_80211_pmkid_cand_list_flag_bits {
+	NDIS_80211_PMKID_CAND_PREAUTH = cpu_to_le32(1 << 0)
+};
+
+struct ndis_80211_auth_request {
+	__le32 length;
+	u8 bssid[ETH_ALEN];
+	u8 padding[2];
+	__le32 flags;
+} __packed;
+
+struct ndis_80211_pmkid_candidate {
+	u8 bssid[ETH_ALEN];
+	u8 padding[2];
+	__le32 flags;
+} __packed;
+
+struct ndis_80211_pmkid_cand_list {
+	__le32 version;
+	__le32 num_candidates;
+	struct ndis_80211_pmkid_candidate candidate_list[];
+} __packed;
+
+struct ndis_80211_status_indication {
+	__le32 status_type;
+	union {
+		__le32					media_stream_mode;
+		__le32					radio_status;
+		DECLARE_FLEX_ARRAY(struct ndis_80211_auth_request, auth_request);
+		struct ndis_80211_pmkid_cand_list	cand_list;
+	} u;
+} __packed;
+
+struct ndis_80211_ssid {
+	__le32 length;
+	u8 essid[NDIS_802_11_LENGTH_SSID];
+} __packed;
+
+struct ndis_80211_conf_freq_hop {
+	__le32 length;
+	__le32 hop_pattern;
+	__le32 hop_set;
+	__le32 dwell_time;
+} __packed;
+
+struct ndis_80211_conf {
+	__le32 length;
+	__le32 beacon_period;
+	__le32 atim_window;
+	__le32 ds_config;
+	struct ndis_80211_conf_freq_hop fh_config;
+} __packed;
+
+struct ndis_80211_bssid_ex {
+	__le32 length;
+	u8 mac[ETH_ALEN];
+	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[];
+} __packed;
+
+struct ndis_80211_bssid_list_ex {
+	__le32 num_items;
+	u8 bssid_data[];
+} __packed;
+
+struct ndis_80211_fixed_ies {
+	u8 timestamp[8];
+	__le16 beacon_interval;
+	__le16 capabilities;
+} __packed;
+
+struct ndis_80211_wep_key {
+	__le32 size;
+	__le32 index;
+	__le32 length;
+	u8 material[32];
+} __packed;
+
+struct ndis_80211_key {
+	__le32 size;
+	__le32 index;
+	__le32 length;
+	u8 bssid[ETH_ALEN];
+	u8 padding[6];
+	u8 rsc[8];
+	u8 material[32];
+} __packed;
+
+struct ndis_80211_remove_key {
+	__le32 size;
+	__le32 index;
+	u8 bssid[ETH_ALEN];
+	u8 padding[2];
+} __packed;
+
+struct ndis_config_param {
+	__le32 name_offs;
+	__le32 name_length;
+	__le32 type;
+	__le32 value_offs;
+	__le32 value_length;
+} __packed;
+
+struct ndis_80211_assoc_info {
+	__le32 length;
+	__le16 req_ies;
+	struct req_ie {
+		__le16 capa;
+		__le16 listen_interval;
+		u8 cur_ap_address[ETH_ALEN];
+	} req_ie;
+	__le32 req_ie_length;
+	__le32 offset_req_ies;
+	__le16 resp_ies;
+	struct resp_ie {
+		__le16 capa;
+		__le16 status_code;
+		__le16 assoc_id;
+	} resp_ie;
+	__le32 resp_ie_length;
+	__le32 offset_resp_ies;
+} __packed;
+
+struct ndis_80211_capability {
+	__le32 length;
+	__le32 version;
+	__le32 num_pmkids;
+	__le32 num_auth_encr_pair;
+} __packed;
+
+struct ndis_80211_bssid_info {
+	u8 bssid[ETH_ALEN];
+	u8 pmkid[16];
+} __packed;
+
+struct ndis_80211_pmkid {
+	__le32 length;
+	__le32 bssid_info_count;
+	struct ndis_80211_bssid_info bssid_info[];
+} __packed;
+
+/*
+ *  private data
+ */
+#define CAP_MODE_80211A		1
+#define CAP_MODE_80211B		2
+#define CAP_MODE_80211G		4
+#define CAP_MODE_MASK		7
+
+#define WORK_LINK_UP		0
+#define WORK_LINK_DOWN		1
+#define WORK_SET_MULTICAST_LIST	2
+
+#define RNDIS_WLAN_ALG_NONE	0
+#define RNDIS_WLAN_ALG_WEP	(1<<0)
+#define RNDIS_WLAN_ALG_TKIP	(1<<1)
+#define RNDIS_WLAN_ALG_CCMP	(1<<2)
+
+#define RNDIS_WLAN_NUM_KEYS		4
+#define RNDIS_WLAN_KEY_MGMT_NONE	0
+#define RNDIS_WLAN_KEY_MGMT_802_1X	(1<<0)
+#define RNDIS_WLAN_KEY_MGMT_PSK		(1<<1)
+
+#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 }
+};
+
+static const u32 rndis_cipher_suites[] = {
+	WLAN_CIPHER_SUITE_WEP40,
+	WLAN_CIPHER_SUITE_WEP104,
+	WLAN_CIPHER_SUITE_TKIP,
+	WLAN_CIPHER_SUITE_CCMP,
+};
+
+struct rndis_wlan_encr_key {
+	int len;
+	u32 cipher;
+	u8 material[32];
+	u8 bssid[ETH_ALEN];
+	bool pairwise;
+	bool tx_key;
+};
+
+/* RNDIS device private data */
+struct rndis_wlan_private {
+	struct usbnet *usbdev;
+
+	struct wireless_dev wdev;
+
+	struct cfg80211_scan_request *scan_request;
+
+	struct workqueue_struct *workqueue;
+	struct delayed_work dev_poller_work;
+	struct delayed_work scan_work;
+	struct work_struct work;
+	struct mutex command_lock;
+	unsigned long work_pending;
+	int last_qual;
+	s32 cqm_rssi_thold;
+	u32 cqm_rssi_hyst;
+	int last_cqm_event_rssi;
+
+	struct ieee80211_supported_band band;
+	struct ieee80211_channel channels[ARRAY_SIZE(rndis_channels)];
+	struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)];
+	u32 cipher_suites[ARRAY_SIZE(rndis_cipher_suites)];
+
+	int device_type;
+	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 */
+	bool radio_on;
+	int power_mode;
+	int infra_mode;
+	bool connected;
+	u8 bssid[ETH_ALEN];
+	u32 current_command_oid;
+
+	/* encryption stuff */
+	u8 encr_tx_key_index;
+	struct rndis_wlan_encr_key encr_keys[RNDIS_WLAN_NUM_KEYS];
+	int  wpa_version;
+
+	u8 command_buffer[COMMAND_BUFFER_SIZE];
+};
+
+/*
+ * cfg80211 ops
+ */
+static int rndis_change_virtual_intf(struct wiphy *wiphy,
+					struct net_device *dev,
+					enum nl80211_iftype type,
+					struct vif_params *params);
+
+static int rndis_scan(struct wiphy *wiphy,
+			struct cfg80211_scan_request *request);
+
+static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed);
+
+static int rndis_set_tx_power(struct wiphy *wiphy,
+			      struct wireless_dev *wdev,
+			      enum nl80211_tx_power_setting type,
+			      int mbm);
+static int rndis_get_tx_power(struct wiphy *wiphy,
+			      struct wireless_dev *wdev,
+			      int *dbm);
+
+static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
+				struct cfg80211_connect_params *sme);
+
+static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
+				u16 reason_code);
+
+static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
+					struct cfg80211_ibss_params *params);
+
+static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev);
+
+static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
+			 int link_id,  u8 key_index, bool pairwise,
+			 const u8 *mac_addr, struct key_params *params);
+
+static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
+			 int link_id, u8 key_index, bool pairwise,
+			 const u8 *mac_addr);
+
+static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
+				 int link_id, u8 key_index, bool unicast,
+				 bool multicast);
+
+static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
+			     const u8 *mac, struct station_info *sinfo);
+
+static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
+			       int idx, u8 *mac, struct station_info *sinfo);
+
+static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
+				struct cfg80211_pmksa *pmksa);
+
+static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
+				struct cfg80211_pmksa *pmksa);
+
+static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev);
+
+static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
+				bool enabled, int timeout);
+
+static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
+					struct net_device *dev,
+					s32 rssi_thold, u32 rssi_hyst);
+
+static const struct cfg80211_ops rndis_config_ops = {
+	.change_virtual_intf = rndis_change_virtual_intf,
+	.scan = rndis_scan,
+	.set_wiphy_params = rndis_set_wiphy_params,
+	.set_tx_power = rndis_set_tx_power,
+	.get_tx_power = rndis_get_tx_power,
+	.connect = rndis_connect,
+	.disconnect = rndis_disconnect,
+	.join_ibss = rndis_join_ibss,
+	.leave_ibss = rndis_leave_ibss,
+	.add_key = rndis_add_key,
+	.del_key = rndis_del_key,
+	.set_default_key = rndis_set_default_key,
+	.get_station = rndis_get_station,
+	.dump_station = rndis_dump_station,
+	.set_pmksa = rndis_set_pmksa,
+	.del_pmksa = rndis_del_pmksa,
+	.flush_pmksa = rndis_flush_pmksa,
+	.set_power_mgmt = rndis_set_power_mgmt,
+	.set_cqm_rssi_config = rndis_set_cqm_rssi_config,
+};
+
+static void *rndis_wiphy_privid = &rndis_wiphy_privid;
+
+
+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_dbm(struct rndis_wlan_private *priv)
+{
+	switch (priv->param_power_output) {
+	default:
+	case 3:
+		return BCM4320_DEFAULT_TXPOWER_DBM_100;
+	case 2:
+		return BCM4320_DEFAULT_TXPOWER_DBM_75;
+	case 1:
+		return BCM4320_DEFAULT_TXPOWER_DBM_50;
+	case 0:
+		return BCM4320_DEFAULT_TXPOWER_DBM_25;
+	}
+}
+
+static bool is_wpa_key(struct rndis_wlan_private *priv, u8 idx)
+{
+	int cipher = priv->encr_keys[idx].cipher;
+
+	return (cipher == WLAN_CIPHER_SUITE_CCMP ||
+		cipher == WLAN_CIPHER_SUITE_TKIP);
+}
+
+static int rndis_cipher_to_alg(u32 cipher)
+{
+	switch (cipher) {
+	default:
+		return RNDIS_WLAN_ALG_NONE;
+	case WLAN_CIPHER_SUITE_WEP40:
+	case WLAN_CIPHER_SUITE_WEP104:
+		return RNDIS_WLAN_ALG_WEP;
+	case WLAN_CIPHER_SUITE_TKIP:
+		return RNDIS_WLAN_ALG_TKIP;
+	case WLAN_CIPHER_SUITE_CCMP:
+		return RNDIS_WLAN_ALG_CCMP;
+	}
+}
+
+static int rndis_akm_suite_to_key_mgmt(u32 akm_suite)
+{
+	switch (akm_suite) {
+	default:
+		return RNDIS_WLAN_KEY_MGMT_NONE;
+	case WLAN_AKM_SUITE_8021X:
+		return RNDIS_WLAN_KEY_MGMT_802_1X;
+	case WLAN_AKM_SUITE_PSK:
+		return RNDIS_WLAN_KEY_MGMT_PSK;
+	}
+}
+
+#ifdef DEBUG
+static const char *oid_to_string(u32 oid)
+{
+	switch (oid) {
+#define OID_STR(oid) case oid: return(#oid)
+		/* from rndis_host.h */
+		OID_STR(RNDIS_OID_802_3_PERMANENT_ADDRESS);
+		OID_STR(RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE);
+		OID_STR(RNDIS_OID_GEN_CURRENT_PACKET_FILTER);
+		OID_STR(RNDIS_OID_GEN_PHYSICAL_MEDIUM);
+
+		/* from rndis_wlan.c */
+		OID_STR(RNDIS_OID_GEN_LINK_SPEED);
+		OID_STR(RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER);
+
+		OID_STR(RNDIS_OID_GEN_XMIT_OK);
+		OID_STR(RNDIS_OID_GEN_RCV_OK);
+		OID_STR(RNDIS_OID_GEN_XMIT_ERROR);
+		OID_STR(RNDIS_OID_GEN_RCV_ERROR);
+		OID_STR(RNDIS_OID_GEN_RCV_NO_BUFFER);
+
+		OID_STR(RNDIS_OID_802_3_CURRENT_ADDRESS);
+		OID_STR(RNDIS_OID_802_3_MULTICAST_LIST);
+		OID_STR(RNDIS_OID_802_3_MAXIMUM_LIST_SIZE);
+
+		OID_STR(RNDIS_OID_802_11_BSSID);
+		OID_STR(RNDIS_OID_802_11_SSID);
+		OID_STR(RNDIS_OID_802_11_INFRASTRUCTURE_MODE);
+		OID_STR(RNDIS_OID_802_11_ADD_WEP);
+		OID_STR(RNDIS_OID_802_11_REMOVE_WEP);
+		OID_STR(RNDIS_OID_802_11_DISASSOCIATE);
+		OID_STR(RNDIS_OID_802_11_AUTHENTICATION_MODE);
+		OID_STR(RNDIS_OID_802_11_PRIVACY_FILTER);
+		OID_STR(RNDIS_OID_802_11_BSSID_LIST_SCAN);
+		OID_STR(RNDIS_OID_802_11_ENCRYPTION_STATUS);
+		OID_STR(RNDIS_OID_802_11_ADD_KEY);
+		OID_STR(RNDIS_OID_802_11_REMOVE_KEY);
+		OID_STR(RNDIS_OID_802_11_ASSOCIATION_INFORMATION);
+		OID_STR(RNDIS_OID_802_11_CAPABILITY);
+		OID_STR(RNDIS_OID_802_11_PMKID);
+		OID_STR(RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED);
+		OID_STR(RNDIS_OID_802_11_NETWORK_TYPE_IN_USE);
+		OID_STR(RNDIS_OID_802_11_TX_POWER_LEVEL);
+		OID_STR(RNDIS_OID_802_11_RSSI);
+		OID_STR(RNDIS_OID_802_11_RSSI_TRIGGER);
+		OID_STR(RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD);
+		OID_STR(RNDIS_OID_802_11_RTS_THRESHOLD);
+		OID_STR(RNDIS_OID_802_11_SUPPORTED_RATES);
+		OID_STR(RNDIS_OID_802_11_CONFIGURATION);
+		OID_STR(RNDIS_OID_802_11_POWER_MODE);
+		OID_STR(RNDIS_OID_802_11_BSSID_LIST);
+#undef OID_STR
+	}
+
+	return "?";
+}
+#else
+static const char *oid_to_string(u32 oid)
+{
+	return "?";
+}
+#endif
+
+/* translate error code */
+static int rndis_error_status(__le32 rndis_status)
+{
+	int ret = -EINVAL;
+	switch (le32_to_cpu(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, u32 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;
+	size_t buflen, resplen, respoffs, copylen;
+
+	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 = cpu_to_le32(RNDIS_MSG_QUERY);
+	u.get->msg_len = cpu_to_le32(sizeof *u.get);
+	u.get->oid = cpu_to_le32(oid);
+
+	priv->current_command_oid = oid;
+	ret = rndis_command(dev, u.header, buflen);
+	priv->current_command_oid = 0;
+	if (ret < 0)
+		netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
+			   __func__, oid_to_string(oid), ret,
+			   le32_to_cpu(u.get_c->status));
+
+	if (ret == 0) {
+		resplen = le32_to_cpu(u.get_c->len);
+		respoffs = le32_to_cpu(u.get_c->offset) + 8;
+
+		if (respoffs > buflen) {
+			/* Device returned data offset outside buffer, error. */
+			netdev_dbg(dev->net,
+				   "%s(%s): received invalid data offset: %zu > %zu\n",
+				   __func__, oid_to_string(oid), respoffs, buflen);
+
+			ret = -EINVAL;
+			goto exit_unlock;
+		}
+
+		copylen = min(resplen, buflen - respoffs);
+
+		if (copylen > *len)
+			copylen = *len;
+
+		memcpy(data, u.buf + respoffs, copylen);
+
+		*len = resplen;
+
+		ret = rndis_error_status(u.get_c->status);
+		if (ret < 0)
+			netdev_dbg(dev->net, "%s(%s): device returned error,  0x%08x (%d)\n",
+				   __func__, oid_to_string(oid),
+				   le32_to_cpu(u.get_c->status), ret);
+	}
+
+exit_unlock:
+	mutex_unlock(&priv->command_lock);
+
+	if (u.buf != priv->command_buffer)
+		kfree(u.buf);
+	return ret;
+}
+
+static int rndis_set_oid(struct usbnet *dev, u32 oid, const 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 = cpu_to_le32(RNDIS_MSG_SET);
+	u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
+	u.set->oid = cpu_to_le32(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);
+
+	priv->current_command_oid = oid;
+	ret = rndis_command(dev, u.header, buflen);
+	priv->current_command_oid = 0;
+	if (ret < 0)
+		netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
+			   __func__, oid_to_string(oid), ret,
+			   le32_to_cpu(u.set_c->status));
+
+	if (ret == 0) {
+		ret = rndis_error_status(u.set_c->status);
+
+		if (ret < 0)
+			netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
+				   __func__, oid_to_string(oid),
+				   le32_to_cpu(u.set_c->status), ret);
+	}
+
+	mutex_unlock(&priv->command_lock);
+
+	if (u.buf != priv->command_buffer)
+		kfree(u.buf);
+	return ret;
+}
+
+static int rndis_reset(struct usbnet *usbdev)
+{
+	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
+	struct rndis_reset *reset;
+	int ret;
+
+	mutex_lock(&priv->command_lock);
+
+	reset = (void *)priv->command_buffer;
+	memset(reset, 0, sizeof(*reset));
+	reset->msg_type = cpu_to_le32(RNDIS_MSG_RESET);
+	reset->msg_len = cpu_to_le32(sizeof(*reset));
+	priv->current_command_oid = 0;
+	ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE);
+
+	mutex_unlock(&priv->command_lock);
+
+	if (ret < 0)
+		return ret;
+	return 0;
+}
+
+/*
+ * 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)
+		netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n",
+			   param, (u8 *)value);
+	else
+		netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n",
+			   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
+	netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len);
+	for (i = 0; i < info_len; i += 12) {
+		u32 *tmp = (u32 *)((u8 *)infobuf + i);
+		netdev_dbg(dev->net, "%08X:%08X:%08X\n",
+			   cpu_to_be32(tmp[0]),
+			   cpu_to_be32(tmp[1]),
+			   cpu_to_be32(tmp[2]));
+	}
+#endif
+
+	ret = rndis_set_oid(dev, RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER,
+							infobuf, info_len);
+	if (ret != 0)
+		netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n",
+			   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);
+}
+
+/*
+ * 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;
+}
+
+/*
+ * common functions
+ */
+static int set_infra_mode(struct usbnet *usbdev, int mode);
+static void restore_keys(struct usbnet *usbdev);
+static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
+					bool *matched);
+
+static int rndis_start_bssid_list_scan(struct usbnet *usbdev)
+{
+	__le32 tmp;
+
+	/* Note: RNDIS_OID_802_11_BSSID_LIST_SCAN clears internal BSS list. */
+	tmp = cpu_to_le32(1);
+	return rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST_SCAN, &tmp,
+							sizeof(tmp));
+}
+
+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, RNDIS_OID_802_11_SSID,
+			    ssid, sizeof(*ssid));
+	if (ret < 0) {
+		netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret);
+		return ret;
+	}
+	if (ret == 0) {
+		priv->radio_on = true;
+		netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
+	}
+
+	return ret;
+}
+
+static int set_bssid(struct usbnet *usbdev, const u8 *bssid)
+{
+	int ret;
+
+	ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID,
+			    bssid, ETH_ALEN);
+	if (ret < 0) {
+		netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n",
+			    bssid, ret);
+		return ret;
+	}
+
+	return ret;
+}
+
+static int clear_bssid(struct usbnet *usbdev)
+{
+	static const u8 broadcast_mac[ETH_ALEN] = {
+		0xff, 0xff, 0xff, 0xff, 0xff, 0xff
+	};
+
+	return set_bssid(usbdev, broadcast_mac);
+}
+
+static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
+{
+	int ret, len;
+
+	len = ETH_ALEN;
+	ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID,
+			      bssid, &len);
+
+	if (ret != 0)
+		eth_zero_addr(bssid);
+
+	return ret;
+}
+
+static int get_association_info(struct usbnet *usbdev,
+			struct ndis_80211_assoc_info *info, int len)
+{
+	return rndis_query_oid(usbdev,
+			RNDIS_OID_802_11_ASSOCIATION_INFORMATION,
+			info, &len);
+}
+
+static bool is_associated(struct usbnet *usbdev)
+{
+	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
+	u8 bssid[ETH_ALEN];
+
+	if (!priv->radio_on)
+		return false;
+
+	return (get_bssid(usbdev, bssid) == 0 && !is_zero_ether_addr(bssid));
+}
+
+static int disassociate(struct usbnet *usbdev, bool 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,
+				RNDIS_OID_802_11_DISASSOCIATE,
+				NULL, 0);
+		if (ret == 0) {
+			priv->radio_on = false;
+			netdev_dbg(usbdev->net, "%s(): radio_on = false\n",
+				   __func__);
+
+			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) {
+		/* Set device to infrastructure mode so we don't get ad-hoc
+		 * 'media connect' indications with the random ssid.
+		 */
+		set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
+
+		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, u32 wpa_version,
+				enum nl80211_auth_type auth_type, int keymgmt)
+{
+	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
+	__le32 tmp;
+	int auth_mode, ret;
+
+	netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n",
+		   __func__, wpa_version, auth_type, keymgmt);
+
+	if (wpa_version & NL80211_WPA_VERSION_2) {
+		if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
+			auth_mode = NDIS_80211_AUTH_WPA2;
+		else
+			auth_mode = NDIS_80211_AUTH_WPA2_PSK;
+	} else if (wpa_version & NL80211_WPA_VERSION_1) {
+		if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
+			auth_mode = NDIS_80211_AUTH_WPA;
+		else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK)
+			auth_mode = NDIS_80211_AUTH_WPA_PSK;
+		else
+			auth_mode = NDIS_80211_AUTH_WPA_NONE;
+	} else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
+		auth_mode = NDIS_80211_AUTH_SHARED;
+	else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
+		auth_mode = NDIS_80211_AUTH_OPEN;
+	else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC)
+		auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
+	else
+		return -ENOTSUPP;
+
+	tmp = cpu_to_le32(auth_mode);
+	ret = rndis_set_oid(usbdev,
+			    RNDIS_OID_802_11_AUTHENTICATION_MODE,
+			    &tmp, sizeof(tmp));
+	if (ret != 0) {
+		netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n",
+			    ret);
+		return ret;
+	}
+
+	priv->wpa_version = wpa_version;
+
+	return 0;
+}
+
+static int set_priv_filter(struct usbnet *usbdev)
+{
+	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
+	__le32 tmp;
+
+	netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n",
+		   __func__, priv->wpa_version);
+
+	if (priv->wpa_version & NL80211_WPA_VERSION_2 ||
+	    priv->wpa_version & NL80211_WPA_VERSION_1)
+		tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
+	else
+		tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
+
+	return rndis_set_oid(usbdev,
+			     RNDIS_OID_802_11_PRIVACY_FILTER, &tmp,
+			     sizeof(tmp));
+}
+
+static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
+{
+	__le32 tmp;
+	int encr_mode, ret;
+
+	netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n",
+		   __func__, pairwise, groupwise);
+
+	if (pairwise & RNDIS_WLAN_ALG_CCMP)
+		encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
+	else if (pairwise & RNDIS_WLAN_ALG_TKIP)
+		encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
+	else if (pairwise & RNDIS_WLAN_ALG_WEP)
+		encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
+	else if (groupwise & RNDIS_WLAN_ALG_CCMP)
+		encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
+	else if (groupwise & RNDIS_WLAN_ALG_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,
+			RNDIS_OID_802_11_ENCRYPTION_STATUS, &tmp,
+			sizeof(tmp));
+	if (ret != 0) {
+		netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n",
+			    ret);
+		return ret;
+	}
+
+	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;
+
+	netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n",
+		   __func__, priv->infra_mode);
+
+	tmp = cpu_to_le32(mode);
+	ret = rndis_set_oid(usbdev,
+			    RNDIS_OID_802_11_INFRASTRUCTURE_MODE,
+			    &tmp, sizeof(tmp));
+	if (ret != 0) {
+		netdev_warn(usbdev->net, "setting infra mode failed (%08X)\n",
+			    ret);
+		return ret;
+	}
+
+	/* NDIS drivers clear keys when infrastructure mode is
+	 * changed. But Linux tools assume otherwise. So set the
+	 * keys */
+	restore_keys(usbdev);
+
+	priv->infra_mode = mode;
+	return 0;
+}
+
+static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
+{
+	__le32 tmp;
+
+	netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
+
+	if (rts_threshold == -1 || rts_threshold > 2347)
+		rts_threshold = 2347;
+
+	tmp = cpu_to_le32(rts_threshold);
+	return rndis_set_oid(usbdev,
+			     RNDIS_OID_802_11_RTS_THRESHOLD,
+			     &tmp, sizeof(tmp));
+}
+
+static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold)
+{
+	__le32 tmp;
+
+	netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold);
+
+	if (frag_threshold < 256 || frag_threshold > 2346)
+		frag_threshold = 2346;
+
+	tmp = cpu_to_le32(frag_threshold);
+	return rndis_set_oid(usbdev,
+			RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD,
+			&tmp, sizeof(tmp));
+}
+
+static void set_default_iw_params(struct usbnet *usbdev)
+{
+	set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
+	set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM,
+						RNDIS_WLAN_KEY_MGMT_NONE);
+	set_priv_filter(usbdev);
+	set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
+}
+
+static int deauthenticate(struct usbnet *usbdev)
+{
+	int ret;
+
+	ret = disassociate(usbdev, true);
+	set_default_iw_params(usbdev);
+	return ret;
+}
+
+static int set_channel(struct usbnet *usbdev, int channel)
+{
+	struct ndis_80211_conf config;
+	unsigned int dsconfig;
+	int len, ret;
+
+	netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel);
+
+	/* this OID is valid only when not associated */
+	if (is_associated(usbdev))
+		return 0;
+
+	dsconfig = 1000 *
+		ieee80211_channel_to_frequency(channel, NL80211_BAND_2GHZ);
+
+	len = sizeof(config);
+	ret = rndis_query_oid(usbdev,
+			RNDIS_OID_802_11_CONFIGURATION,
+			&config, &len);
+	if (ret < 0) {
+		netdev_dbg(usbdev->net, "%s(): querying configuration failed\n",
+			   __func__);
+		return ret;
+	}
+
+	config.ds_config = cpu_to_le32(dsconfig);
+	ret = rndis_set_oid(usbdev,
+			RNDIS_OID_802_11_CONFIGURATION,
+			&config, sizeof(config));
+
+	netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
+
+	return ret;
+}
+
+static struct ieee80211_channel *get_current_channel(struct usbnet *usbdev,
+						     u32 *beacon_period)
+{
+	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
+	struct ieee80211_channel *channel;
+	struct ndis_80211_conf config;
+	int len, ret;
+
+	/* Get channel and beacon interval */
+	len = sizeof(config);
+	ret = rndis_query_oid(usbdev,
+			RNDIS_OID_802_11_CONFIGURATION,
+			&config, &len);
+	netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_CONFIGURATION -> %d\n",
+				__func__, ret);
+	if (ret < 0)
+		return NULL;
+
+	channel = ieee80211_get_channel(priv->wdev.wiphy,
+				KHZ_TO_MHZ(le32_to_cpu(config.ds_config)));
+	if (!channel)
+		return NULL;
+
+	if (beacon_period)
+		*beacon_period = le32_to_cpu(config.beacon_period);
+	return channel;
+}
+
+/* index must be 0 - N, as per NDIS  */
+static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
+								u8 index)
+{
+	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
+	struct ndis_80211_wep_key ndis_key;
+	u32 cipher;
+	int ret;
+
+	netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n",
+		   __func__, index, key_len);
+
+	if (index >= RNDIS_WLAN_NUM_KEYS)
+		return -EINVAL;
+
+	if (key_len == 5)
+		cipher = WLAN_CIPHER_SUITE_WEP40;
+	else if (key_len == 13)
+		cipher = WLAN_CIPHER_SUITE_WEP104;
+	else
+		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, RNDIS_WLAN_ALG_WEP,
+							RNDIS_WLAN_ALG_NONE);
+		if (ret)
+			netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
+				    ret);
+	}
+
+	ret = rndis_set_oid(usbdev,
+			RNDIS_OID_802_11_ADD_WEP, &ndis_key,
+			sizeof(ndis_key));
+	if (ret != 0) {
+		netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
+			    index + 1, ret);
+		return ret;
+	}
+
+	priv->encr_keys[index].len = key_len;
+	priv->encr_keys[index].cipher = cipher;
+	memcpy(&priv->encr_keys[index].material, key, key_len);
+	eth_broadcast_addr(priv->encr_keys[index].bssid);
+
+	return 0;
+}
+
+static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
+			u8 index, const u8 *addr, const u8 *rx_seq,
+			int seq_len, u32 cipher, __le32 flags)
+{
+	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
+	struct ndis_80211_key ndis_key;
+	bool is_addr_ok;
+	int ret;
+
+	if (index >= RNDIS_WLAN_NUM_KEYS) {
+		netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
+			   __func__, index);
+		return -EINVAL;
+	}
+	if (key_len > sizeof(ndis_key.material) || key_len < 0) {
+		netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
+			   __func__, key_len);
+		return -EINVAL;
+	}
+	if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
+		if (!rx_seq || seq_len <= 0) {
+			netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
+				   __func__);
+			return -EINVAL;
+		}
+		if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
+			netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
+			return -EINVAL;
+		}
+	}
+
+	is_addr_ok = addr && !is_zero_ether_addr(addr) &&
+					!is_broadcast_ether_addr(addr);
+	if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
+		netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
+			   __func__, addr);
+		return -EINVAL;
+	}
+
+	netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
+		   __func__, 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 (cipher == WLAN_CIPHER_SUITE_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, seq_len);
+
+	if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
+		/* pairwise key */
+		memcpy(ndis_key.bssid, addr, ETH_ALEN);
+	} else {
+		/* group key */
+		if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
+			eth_broadcast_addr(ndis_key.bssid);
+		else
+			get_bssid(usbdev, ndis_key.bssid);
+	}
+
+	ret = rndis_set_oid(usbdev,
+			RNDIS_OID_802_11_ADD_KEY, &ndis_key,
+			le32_to_cpu(ndis_key.size));
+	netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_ADD_KEY -> %08X\n",
+		   __func__, ret);
+	if (ret != 0)
+		return ret;
+
+	memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
+	priv->encr_keys[index].len = key_len;
+	priv->encr_keys[index].cipher = cipher;
+	memcpy(&priv->encr_keys[index].material, key, key_len);
+	if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
+		memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
+	else
+		eth_broadcast_addr(priv->encr_keys[index].bssid);
+
+	if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
+		priv->encr_tx_key_index = index;
+
+	return 0;
+}
+
+static int restore_key(struct usbnet *usbdev, u8 key_idx)
+{
+	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
+	struct rndis_wlan_encr_key key;
+
+	if (is_wpa_key(priv, key_idx))
+		return 0;
+
+	key = priv->encr_keys[key_idx];
+
+	netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
+
+	if (key.len == 0)
+		return 0;
+
+	return add_wep_key(usbdev, key.material, key.len, key_idx);
+}
+
+static void restore_keys(struct usbnet *usbdev)
+{
+	int i;
+
+	for (i = 0; i < 4; i++)
+		restore_key(usbdev, i);
+}
+
+static void clear_key(struct rndis_wlan_private *priv, u8 idx)
+{
+	memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
+}
+
+/* remove_key is for both wep and wpa */
+static int remove_key(struct usbnet *usbdev, u8 index, const u8 *bssid)
+{
+	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
+	struct ndis_80211_remove_key remove_key;
+	__le32 keyindex;
+	bool is_wpa;
+	int ret;
+
+	if (index >= RNDIS_WLAN_NUM_KEYS)
+		return -ENOENT;
+
+	if (priv->encr_keys[index].len == 0)
+		return 0;
+
+	is_wpa = is_wpa_key(priv, index);
+
+	netdev_dbg(usbdev->net, "%s(): %i:%s:%i\n",
+		   __func__, index, is_wpa ? "wpa" : "wep",
+		   priv->encr_keys[index].len);
+
+	clear_key(priv, index);
+
+	if (is_wpa) {
+		remove_key.size = cpu_to_le32(sizeof(remove_key));
+		remove_key.index = cpu_to_le32(index);
+		if (bssid) {
+			/* pairwise key */
+			if (!is_broadcast_ether_addr(bssid))
+				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,
+				RNDIS_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,
+				RNDIS_OID_802_11_REMOVE_WEP,
+				&keyindex, sizeof(keyindex));
+		if (ret != 0) {
+			netdev_warn(usbdev->net,
+				    "removing encryption key %d failed (%08X)\n",
+				    index, ret);
+			return ret;
+		}
+	}
+
+	/* if it is transmit key, disable encryption */
+	if (index == priv->encr_tx_key_index)
+		set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
+
+	return 0;
+}
+
+static void set_multicast_list(struct usbnet *usbdev)
+{
+	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
+	struct netdev_hw_addr *ha;
+	__le32 filter, basefilter;
+	int ret;
+	char *mc_addrs = NULL;
+	int mc_count;
+
+	basefilter = filter = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED |
+					  RNDIS_PACKET_TYPE_BROADCAST);
+
+	if (usbdev->net->flags & IFF_PROMISC) {
+		filter |= cpu_to_le32(RNDIS_PACKET_TYPE_PROMISCUOUS |
+				      RNDIS_PACKET_TYPE_ALL_LOCAL);
+	} else if (usbdev->net->flags & IFF_ALLMULTI) {
+		filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
+	}
+
+	if (filter != basefilter)
+		goto set_filter;
+
+	/*
+	 * mc_list should be accessed holding the lock, so copy addresses to
+	 * local buffer first.
+	 */
+	netif_addr_lock_bh(usbdev->net);
+	mc_count = netdev_mc_count(usbdev->net);
+	if (mc_count > priv->multicast_size) {
+		filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
+	} else if (mc_count) {
+		int i = 0;
+
+		mc_addrs = kmalloc_array(mc_count, ETH_ALEN, GFP_ATOMIC);
+		if (!mc_addrs) {
+			netif_addr_unlock_bh(usbdev->net);
+			return;
+		}
+
+		netdev_for_each_mc_addr(ha, usbdev->net)
+			memcpy(mc_addrs + i++ * ETH_ALEN,
+			       ha->addr, ETH_ALEN);
+	}
+	netif_addr_unlock_bh(usbdev->net);
+
+	if (filter != basefilter)
+		goto set_filter;
+
+	if (mc_count) {
+		ret = rndis_set_oid(usbdev,
+				RNDIS_OID_802_3_MULTICAST_LIST,
+				mc_addrs, mc_count * ETH_ALEN);
+		kfree(mc_addrs);
+		if (ret == 0)
+			filter |= cpu_to_le32(RNDIS_PACKET_TYPE_MULTICAST);
+		else
+			filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
+
+		netdev_dbg(usbdev->net, "RNDIS_OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
+			   mc_count, priv->multicast_size, ret);
+	}
+
+set_filter:
+	ret = rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
+							sizeof(filter));
+	if (ret < 0) {
+		netdev_warn(usbdev->net, "couldn't set packet filter: %08x\n",
+			    le32_to_cpu(filter));
+	}
+
+	netdev_dbg(usbdev->net, "RNDIS_OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n",
+		   le32_to_cpu(filter), ret);
+}
+
+#ifdef DEBUG
+static void debug_print_pmkids(struct usbnet *usbdev,
+				struct ndis_80211_pmkid *pmkids,
+				const char *func_str)
+{
+	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
+	int i, len, count, max_pmkids, entry_len;
+
+	max_pmkids = priv->wdev.wiphy->max_num_pmkids;
+	len = le32_to_cpu(pmkids->length);
+	count = le32_to_cpu(pmkids->bssid_info_count);
+
+	entry_len = (count > 0) ? (len - sizeof(*pmkids)) / count : -1;
+
+	netdev_dbg(usbdev->net, "%s(): %d PMKIDs (data len: %d, entry len: "
+				"%d)\n", func_str, count, len, entry_len);
+
+	if (count > max_pmkids)
+		count = max_pmkids;
+
+	for (i = 0; i < count; i++) {
+		u32 *tmp = (u32 *)pmkids->bssid_info[i].pmkid;
+
+		netdev_dbg(usbdev->net, "%s():  bssid: %pM, "
+				"pmkid: %08X:%08X:%08X:%08X\n",
+				func_str, pmkids->bssid_info[i].bssid,
+				cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
+				cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
+	}
+}
+#else
+static void debug_print_pmkids(struct usbnet *usbdev,
+				struct ndis_80211_pmkid *pmkids,
+				const char *func_str)
+{
+	return;
+}
+#endif
+
+static struct ndis_80211_pmkid *get_device_pmkids(struct usbnet *usbdev)
+{
+	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
+	struct ndis_80211_pmkid *pmkids;
+	int len, ret, max_pmkids;
+
+	max_pmkids = priv->wdev.wiphy->max_num_pmkids;
+	len = struct_size(pmkids, bssid_info, max_pmkids);
+
+	pmkids = kzalloc(len, GFP_KERNEL);
+	if (!pmkids)
+		return ERR_PTR(-ENOMEM);
+
+	pmkids->length = cpu_to_le32(len);
+	pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
+
+	ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_PMKID,
+			pmkids, &len);
+	if (ret < 0) {
+		netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d)"
+				" -> %d\n", __func__, len, max_pmkids, ret);
+
+		kfree(pmkids);
+		return ERR_PTR(ret);
+	}
+
+	if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids)
+		pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
+
+	debug_print_pmkids(usbdev, pmkids, __func__);
+
+	return pmkids;
+}
+
+static int set_device_pmkids(struct usbnet *usbdev,
+				struct ndis_80211_pmkid *pmkids)
+{
+	int ret, len, num_pmkids;
+
+	num_pmkids = le32_to_cpu(pmkids->bssid_info_count);
+	len = struct_size(pmkids, bssid_info, num_pmkids);
+	pmkids->length = cpu_to_le32(len);
+
+	debug_print_pmkids(usbdev, pmkids, __func__);
+
+	ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID, pmkids,
+			    le32_to_cpu(pmkids->length));
+	if (ret < 0) {
+		netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d) -> %d"
+				"\n", __func__, len, num_pmkids, ret);
+	}
+
+	kfree(pmkids);
+	return ret;
+}
+
+static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev,
+						struct ndis_80211_pmkid *pmkids,
+						struct cfg80211_pmksa *pmksa,
+						int max_pmkids)
+{
+	int i, err;
+	unsigned int count;
+
+	count = le32_to_cpu(pmkids->bssid_info_count);
+
+	if (count > max_pmkids)
+		count = max_pmkids;
+
+	for (i = 0; i < count; i++)
+		if (ether_addr_equal(pmkids->bssid_info[i].bssid,
+				     pmksa->bssid))
+			break;
+
+	/* pmkid not found */
+	if (i == count) {
+		netdev_dbg(usbdev->net, "%s(): bssid not found (%pM)\n",
+					__func__, pmksa->bssid);
+		err = -ENOENT;
+		goto error;
+	}
+
+	for (; i + 1 < count; i++)
+		pmkids->bssid_info[i] = pmkids->bssid_info[i + 1];
+
+	count--;
+	pmkids->length = cpu_to_le32(struct_size(pmkids, bssid_info, count));
+	pmkids->bssid_info_count = cpu_to_le32(count);
+
+	return pmkids;
+error:
+	kfree(pmkids);
+	return ERR_PTR(err);
+}
+
+static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
+						struct ndis_80211_pmkid *pmkids,
+						struct cfg80211_pmksa *pmksa,
+						int max_pmkids)
+{
+	struct ndis_80211_pmkid *new_pmkids;
+	int i, err, newlen;
+	unsigned int count;
+
+	count = le32_to_cpu(pmkids->bssid_info_count);
+
+	if (count > max_pmkids)
+		count = max_pmkids;
+
+	/* update with new pmkid */
+	for (i = 0; i < count; i++) {
+		if (!ether_addr_equal(pmkids->bssid_info[i].bssid,
+				      pmksa->bssid))
+			continue;
+
+		memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
+								WLAN_PMKID_LEN);
+
+		return pmkids;
+	}
+
+	/* out of space, return error */
+	if (i == max_pmkids) {
+		netdev_dbg(usbdev->net, "%s(): out of space\n", __func__);
+		err = -ENOSPC;
+		goto error;
+	}
+
+	/* add new pmkid */
+	newlen = struct_size(pmkids, bssid_info, count + 1);
+
+	new_pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
+	if (!new_pmkids) {
+		err = -ENOMEM;
+		goto error;
+	}
+	pmkids = new_pmkids;
+
+	pmkids->length = cpu_to_le32(newlen);
+	pmkids->bssid_info_count = cpu_to_le32(count + 1);
+
+	memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
+	memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
+
+	return pmkids;
+error:
+	kfree(pmkids);
+	return ERR_PTR(err);
+}
+
+/*
+ * cfg80211 ops
+ */
+static int rndis_change_virtual_intf(struct wiphy *wiphy,
+					struct net_device *dev,
+					enum nl80211_iftype type,
+					struct vif_params *params)
+{
+	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
+	struct usbnet *usbdev = priv->usbdev;
+	int mode;
+
+	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;
+	}
+
+	priv->wdev.iftype = type;
+
+	return set_infra_mode(usbdev, mode);
+}
+
+static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
+{
+	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
+	struct usbnet *usbdev = priv->usbdev;
+	int err;
+
+	if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
+		err = set_frag_threshold(usbdev, wiphy->frag_threshold);
+		if (err < 0)
+			return err;
+	}
+
+	if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
+		err = set_rts_threshold(usbdev, wiphy->rts_threshold);
+		if (err < 0)
+			return err;
+	}
+
+	return 0;
+}
+
+static int rndis_set_tx_power(struct wiphy *wiphy,
+			      struct wireless_dev *wdev,
+			      enum nl80211_tx_power_setting type,
+			      int mbm)
+{
+	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
+	struct usbnet *usbdev = priv->usbdev;
+
+	netdev_dbg(usbdev->net, "%s(): type:0x%x mbm:%i\n",
+		   __func__, type, mbm);
+
+	if (mbm < 0 || (mbm % 100))
+		return -ENOTSUPP;
+
+	/* Device doesn't support changing txpower after initialization, only
+	 * turn off/on radio. Support 'auto' mode and setting same dBm that is
+	 * currently used.
+	 */
+	if (type == NL80211_TX_POWER_AUTOMATIC ||
+	    MBM_TO_DBM(mbm) == get_bcm4320_power_dbm(priv)) {
+		if (!priv->radio_on)
+			disassociate(usbdev, true); /* turn on radio */
+
+		return 0;
+	}
+
+	return -ENOTSUPP;
+}
+
+static int rndis_get_tx_power(struct wiphy *wiphy,
+			      struct wireless_dev *wdev,
+			      int *dbm)
+{
+	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
+	struct usbnet *usbdev = priv->usbdev;
+
+	*dbm = get_bcm4320_power_dbm(priv);
+
+	netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
+
+	return 0;
+}
+
+#define SCAN_DELAY_JIFFIES (6 * HZ)
+static int rndis_scan(struct wiphy *wiphy,
+			struct cfg80211_scan_request *request)
+{
+	struct net_device *dev = request->wdev->netdev;
+	struct usbnet *usbdev = netdev_priv(dev);
+	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
+	int ret;
+	int delay = SCAN_DELAY_JIFFIES;
+
+	netdev_dbg(usbdev->net, "cfg80211.scan\n");
+
+	/* Get current bssid list from device before new scan, as new scan
+	 * clears internal bssid list.
+	 */
+	rndis_check_bssid_list(usbdev, NULL, NULL);
+
+	if (priv->scan_request && priv->scan_request != request)
+		return -EBUSY;
+
+	priv->scan_request = request;
+
+	ret = rndis_start_bssid_list_scan(usbdev);
+	if (ret == 0) {
+		if (priv->device_type == RNDIS_BCM4320A)
+			delay = HZ;
+
+		/* Wait before retrieving scan results from device */
+		queue_delayed_work(priv->workqueue, &priv->scan_work, delay);
+	}
+
+	return ret;
+}
+
+static bool 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;
+	struct cfg80211_bss *bss;
+	s32 signal;
+	u64 timestamp;
+	u16 capability;
+	u16 beacon_interval;
+	struct ndis_80211_fixed_ies *fixed;
+	int ie_len, bssid_len;
+	u8 *ie;
+
+	netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM], len: %d\n",
+		   bssid->ssid.essid, bssid->mac, le32_to_cpu(bssid->length));
+
+	/* 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 false;
+
+	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 false;
+
+	/* 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 false;
+
+	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);
+
+	bss = cfg80211_inform_bss(priv->wdev.wiphy, channel,
+				  CFG80211_BSS_FTYPE_UNKNOWN, bssid->mac,
+				  timestamp, capability, beacon_interval,
+				  ie, ie_len, signal, GFP_KERNEL);
+	cfg80211_put_bss(priv->wdev.wiphy, bss);
+
+	return (bss != NULL);
+}
+
+static struct ndis_80211_bssid_ex *next_bssid_list_item(
+					struct ndis_80211_bssid_ex *bssid,
+					int *bssid_len, void *buf, int len)
+{
+	void *buf_end, *bssid_end;
+
+	buf_end = (char *)buf + len;
+	bssid_end = (char *)bssid + *bssid_len;
+
+	if ((int)(buf_end - bssid_end) < sizeof(bssid->length)) {
+		*bssid_len = 0;
+		return NULL;
+	} else {
+		bssid = (void *)((char *)bssid + *bssid_len);
+		*bssid_len = le32_to_cpu(bssid->length);
+		return bssid;
+	}
+}
+
+static bool check_bssid_list_item(struct ndis_80211_bssid_ex *bssid,
+				  int bssid_len, void *buf, int len)
+{
+	void *buf_end, *bssid_end;
+
+	if (!bssid || bssid_len <= 0 || bssid_len > len)
+		return false;
+
+	buf_end = (char *)buf + len;
+	bssid_end = (char *)bssid + bssid_len;
+
+	return (int)(buf_end - bssid_end) >= 0 && (int)(bssid_end - buf) >= 0;
+}
+
+static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
+					bool *matched)
+{
+	void *buf = NULL;
+	struct ndis_80211_bssid_list_ex *bssid_list;
+	struct ndis_80211_bssid_ex *bssid;
+	int ret = -EINVAL, len, count, bssid_len, real_count, new_len;
+
+	netdev_dbg(usbdev->net, "%s()\n", __func__);
+
+	len = CONTROL_BUFFER_SIZE;
+resize_buf:
+	buf = kzalloc(len, GFP_KERNEL);
+	if (!buf) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	/* BSSID-list might have got bigger last time we checked, keep
+	 * resizing until it won't get any bigger.
+	 */
+	new_len = len;
+	ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST,
+			      buf, &new_len);
+	if (ret != 0 || new_len < sizeof(struct ndis_80211_bssid_list_ex))
+		goto out;
+
+	if (new_len > len) {
+		len = new_len;
+		kfree(buf);
+		goto resize_buf;
+	}
+
+	len = new_len;
+
+	bssid_list = buf;
+	count = le32_to_cpu(bssid_list->num_items);
+	real_count = 0;
+	netdev_dbg(usbdev->net, "%s(): buflen: %d\n", __func__, len);
+
+	bssid_len = 0;
+	bssid = next_bssid_list_item((void *)bssid_list->bssid_data,
+				     &bssid_len, buf, len);
+
+	/* Device returns incorrect 'num_items'. Workaround by ignoring the
+	 * received 'num_items' and walking through full bssid buffer instead.
+	 */
+	while (check_bssid_list_item(bssid, bssid_len, buf, len)) {
+		if (rndis_bss_info_update(usbdev, bssid) && match_bssid &&
+		    matched) {
+			if (ether_addr_equal(bssid->mac, match_bssid))
+				*matched = true;
+		}
+
+		real_count++;
+		bssid = next_bssid_list_item(bssid, &bssid_len, buf, len);
+	}
+
+	netdev_dbg(usbdev->net, "%s(): num_items from device: %d, really found:"
+				" %d\n", __func__, count, real_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;
+	struct cfg80211_scan_info info = {};
+	int ret;
+
+	netdev_dbg(usbdev->net, "get_scan_results\n");
+
+	if (!priv->scan_request)
+		return;
+
+	ret = rndis_check_bssid_list(usbdev, NULL, NULL);
+
+	info.aborted = ret < 0;
+	cfg80211_scan_done(priv->scan_request, &info);
+
+	priv->scan_request = NULL;
+}
+
+static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
+					struct cfg80211_connect_params *sme)
+{
+	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
+	struct usbnet *usbdev = priv->usbdev;
+	struct ieee80211_channel *channel = sme->channel;
+	struct ndis_80211_ssid ssid;
+	int pairwise = RNDIS_WLAN_ALG_NONE;
+	int groupwise = RNDIS_WLAN_ALG_NONE;
+	int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
+	int length, i, ret, chan = -1;
+
+	if (channel)
+		chan = ieee80211_frequency_to_channel(channel->center_freq);
+
+	groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
+	for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
+		pairwise |=
+			rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
+
+	if (sme->crypto.n_ciphers_pairwise > 0 &&
+			pairwise == RNDIS_WLAN_ALG_NONE) {
+		netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
+		return -ENOTSUPP;
+	}
+
+	for (i = 0; i < sme->crypto.n_akm_suites; i++)
+		keymgmt |=
+			rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
+
+	if (sme->crypto.n_akm_suites > 0 &&
+			keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
+		netdev_err(usbdev->net, "Invalid keymgmt\n");
+		return -ENOTSUPP;
+	}
+
+	netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
+		   sme->ssid, sme->bssid, chan,
+		   sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
+		   groupwise, pairwise, keymgmt);
+
+	if (is_associated(usbdev))
+		disassociate(usbdev, false);
+
+	ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
+	if (ret < 0) {
+		netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
+			   ret);
+		goto err_turn_radio_on;
+	}
+
+	ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
+								keymgmt);
+	if (ret < 0) {
+		netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
+			   ret);
+		goto err_turn_radio_on;
+	}
+
+	set_priv_filter(usbdev);
+
+	ret = set_encr_mode(usbdev, pairwise, groupwise);
+	if (ret < 0) {
+		netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
+			   ret);
+		goto err_turn_radio_on;
+	}
+
+	if (channel) {
+		ret = set_channel(usbdev, chan);
+		if (ret < 0) {
+			netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
+				   ret);
+			goto err_turn_radio_on;
+		}
+	}
+
+	if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
+		priv->encr_tx_key_index = sme->key_idx;
+		ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
+		if (ret < 0) {
+			netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
+				   ret, sme->key_len, sme->key_idx);
+			goto err_turn_radio_on;
+		}
+	}
+
+	if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
+				!is_broadcast_ether_addr(sme->bssid)) {
+		ret = set_bssid(usbdev, sme->bssid);
+		if (ret < 0) {
+			netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
+				   ret);
+			goto err_turn_radio_on;
+		}
+	} else
+		clear_bssid(usbdev);
+
+	length = sme->ssid_len;
+	if (length > NDIS_802_11_LENGTH_SSID)
+		length = NDIS_802_11_LENGTH_SSID;
+
+	memset(&ssid, 0, sizeof(ssid));
+	ssid.length = cpu_to_le32(length);
+	memcpy(ssid.essid, sme->ssid, length);
+
+	/* Pause and purge rx queue, so we don't pass packets before
+	 * 'media connect'-indication.
+	 */
+	usbnet_pause_rx(usbdev);
+	usbnet_purge_paused_rxq(usbdev);
+
+	ret = set_essid(usbdev, &ssid);
+	if (ret < 0)
+		netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
+	return ret;
+
+err_turn_radio_on:
+	disassociate(usbdev, true);
+
+	return ret;
+}
+
+static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
+								u16 reason_code)
+{
+	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
+	struct usbnet *usbdev = priv->usbdev;
+
+	netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
+
+	priv->connected = false;
+	eth_zero_addr(priv->bssid);
+
+	return deauthenticate(usbdev);
+}
+
+static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
+					struct cfg80211_ibss_params *params)
+{
+	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
+	struct usbnet *usbdev = priv->usbdev;
+	struct ieee80211_channel *channel = params->chandef.chan;
+	struct ndis_80211_ssid ssid;
+	enum nl80211_auth_type auth_type;
+	int ret, alg, length, chan = -1;
+
+	if (channel)
+		chan = ieee80211_frequency_to_channel(channel->center_freq);
+
+	/* TODO: How to handle ad-hoc encryption?
+	 * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
+	 * pre-shared for encryption (open/shared/wpa), is key set before
+	 * join_ibss? Which auth_type to use (not in params)? What about WPA?
+	 */
+	if (params->privacy) {
+		auth_type = NL80211_AUTHTYPE_SHARED_KEY;
+		alg = RNDIS_WLAN_ALG_WEP;
+	} else {
+		auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
+		alg = RNDIS_WLAN_ALG_NONE;
+	}
+
+	netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
+		   params->ssid, params->bssid, chan, params->privacy);
+
+	if (is_associated(usbdev))
+		disassociate(usbdev, false);
+
+	ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
+	if (ret < 0) {
+		netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
+			   ret);
+		goto err_turn_radio_on;
+	}
+
+	ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
+	if (ret < 0) {
+		netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
+			   ret);
+		goto err_turn_radio_on;
+	}
+
+	set_priv_filter(usbdev);
+
+	ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
+	if (ret < 0) {
+		netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
+			   ret);
+		goto err_turn_radio_on;
+	}
+
+	if (channel) {
+		ret = set_channel(usbdev, chan);
+		if (ret < 0) {
+			netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
+				   ret);
+			goto err_turn_radio_on;
+		}
+	}
+
+	if (params->bssid && !is_zero_ether_addr(params->bssid) &&
+				!is_broadcast_ether_addr(params->bssid)) {
+		ret = set_bssid(usbdev, params->bssid);
+		if (ret < 0) {
+			netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
+				   ret);
+			goto err_turn_radio_on;
+		}
+	} else
+		clear_bssid(usbdev);
+
+	length = params->ssid_len;
+	if (length > NDIS_802_11_LENGTH_SSID)
+		length = NDIS_802_11_LENGTH_SSID;
+
+	memset(&ssid, 0, sizeof(ssid));
+	ssid.length = cpu_to_le32(length);
+	memcpy(ssid.essid, params->ssid, length);
+
+	/* Don't need to pause rx queue for ad-hoc. */
+	usbnet_purge_paused_rxq(usbdev);
+	usbnet_resume_rx(usbdev);
+
+	ret = set_essid(usbdev, &ssid);
+	if (ret < 0)
+		netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
+			   ret);
+	return ret;
+
+err_turn_radio_on:
+	disassociate(usbdev, true);
+
+	return ret;
+}
+
+static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
+{
+	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
+	struct usbnet *usbdev = priv->usbdev;
+
+	netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
+
+	priv->connected = false;
+	eth_zero_addr(priv->bssid);
+
+	return deauthenticate(usbdev);
+}
+
+static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
+			 int link_id,  u8 key_index, bool pairwise,
+			 const u8 *mac_addr, struct key_params *params)
+{
+	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
+	struct usbnet *usbdev = priv->usbdev;
+	__le32 flags;
+
+	netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
+		   __func__, key_index, mac_addr, params->cipher);
+
+	switch (params->cipher) {
+	case WLAN_CIPHER_SUITE_WEP40:
+	case WLAN_CIPHER_SUITE_WEP104:
+		return add_wep_key(usbdev, params->key, params->key_len,
+								key_index);
+	case WLAN_CIPHER_SUITE_TKIP:
+	case WLAN_CIPHER_SUITE_CCMP:
+		flags = 0;
+
+		if (params->seq && params->seq_len > 0)
+			flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
+		if (mac_addr)
+			flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
+					NDIS_80211_ADDKEY_TRANSMIT_KEY;
+
+		return add_wpa_key(usbdev, params->key, params->key_len,
+				key_index, mac_addr, params->seq,
+				params->seq_len, params->cipher, flags);
+	default:
+		netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
+			   __func__, params->cipher);
+		return -ENOTSUPP;
+	}
+}
+
+static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
+			 int link_id, u8 key_index, bool pairwise,
+			 const u8 *mac_addr)
+{
+	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
+	struct usbnet *usbdev = priv->usbdev;
+
+	netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
+
+	return remove_key(usbdev, key_index, mac_addr);
+}
+
+static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
+				 int link_id, u8 key_index, bool unicast,
+				 bool multicast)
+{
+	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
+	struct usbnet *usbdev = priv->usbdev;
+	struct rndis_wlan_encr_key key;
+
+	netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
+
+	if (key_index >= RNDIS_WLAN_NUM_KEYS)
+		return -ENOENT;
+
+	priv->encr_tx_key_index = key_index;
+
+	if (is_wpa_key(priv, key_index))
+		return 0;
+
+	key = priv->encr_keys[key_index];
+
+	return add_wep_key(usbdev, key.material, key.len, key_index);
+}
+
+static void rndis_fill_station_info(struct usbnet *usbdev,
+						struct station_info *sinfo)
+{
+	__le32 linkspeed, rssi;
+	int ret, len;
+
+	memset(sinfo, 0, sizeof(*sinfo));
+
+	len = sizeof(linkspeed);
+	ret = rndis_query_oid(usbdev, RNDIS_OID_GEN_LINK_SPEED, &linkspeed, &len);
+	if (ret == 0) {
+		sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
+		sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE);
+	}
+
+	len = sizeof(rssi);
+	ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
+			      &rssi, &len);
+	if (ret == 0) {
+		sinfo->signal = level_to_qual(le32_to_cpu(rssi));
+		sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL);
+	}
+}
+
+static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
+			     const u8 *mac, struct station_info *sinfo)
+{
+	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
+	struct usbnet *usbdev = priv->usbdev;
+
+	if (!ether_addr_equal(priv->bssid, mac))
+		return -ENOENT;
+
+	rndis_fill_station_info(usbdev, sinfo);
+
+	return 0;
+}
+
+static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
+			       int idx, u8 *mac, struct station_info *sinfo)
+{
+	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
+	struct usbnet *usbdev = priv->usbdev;
+
+	if (idx != 0)
+		return -ENOENT;
+
+	memcpy(mac, priv->bssid, ETH_ALEN);
+
+	rndis_fill_station_info(usbdev, sinfo);
+
+	return 0;
+}
+
+static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
+				struct cfg80211_pmksa *pmksa)
+{
+	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
+	struct usbnet *usbdev = priv->usbdev;
+	struct ndis_80211_pmkid *pmkids;
+	u32 *tmp = (u32 *)pmksa->pmkid;
+
+	netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
+			pmksa->bssid,
+			cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
+			cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
+
+	pmkids = get_device_pmkids(usbdev);
+	if (IS_ERR(pmkids)) {
+		/* couldn't read PMKID cache from device */
+		return PTR_ERR(pmkids);
+	}
+
+	pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
+	if (IS_ERR(pmkids)) {
+		/* not found, list full, etc */
+		return PTR_ERR(pmkids);
+	}
+
+	return set_device_pmkids(usbdev, pmkids);
+}
+
+static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
+				struct cfg80211_pmksa *pmksa)
+{
+	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
+	struct usbnet *usbdev = priv->usbdev;
+	struct ndis_80211_pmkid *pmkids;
+	u32 *tmp = (u32 *)pmksa->pmkid;
+
+	netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
+			pmksa->bssid,
+			cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
+			cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
+
+	pmkids = get_device_pmkids(usbdev);
+	if (IS_ERR(pmkids)) {
+		/* Couldn't read PMKID cache from device */
+		return PTR_ERR(pmkids);
+	}
+
+	pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
+	if (IS_ERR(pmkids)) {
+		/* not found, etc */
+		return PTR_ERR(pmkids);
+	}
+
+	return set_device_pmkids(usbdev, pmkids);
+}
+
+static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
+{
+	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
+	struct usbnet *usbdev = priv->usbdev;
+	struct ndis_80211_pmkid pmkid;
+
+	netdev_dbg(usbdev->net, "%s()\n", __func__);
+
+	memset(&pmkid, 0, sizeof(pmkid));
+
+	pmkid.length = cpu_to_le32(sizeof(pmkid));
+	pmkid.bssid_info_count = cpu_to_le32(0);
+
+	return rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID,
+			     &pmkid, sizeof(pmkid));
+}
+
+static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
+				bool enabled, int timeout)
+{
+	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
+	struct usbnet *usbdev = priv->usbdev;
+	int power_mode;
+	__le32 mode;
+	int ret;
+
+	if (priv->device_type != RNDIS_BCM4320B)
+		return -ENOTSUPP;
+
+	netdev_dbg(usbdev->net, "%s(): %s, %d\n", __func__,
+				enabled ? "enabled" : "disabled",
+				timeout);
+
+	if (enabled)
+		power_mode = NDIS_80211_POWER_MODE_FAST_PSP;
+	else
+		power_mode = NDIS_80211_POWER_MODE_CAM;
+
+	if (power_mode == priv->power_mode)
+		return 0;
+
+	priv->power_mode = power_mode;
+
+	mode = cpu_to_le32(power_mode);
+	ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_POWER_MODE,
+			    &mode, sizeof(mode));
+
+	netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_POWER_MODE -> %d\n",
+				__func__, ret);
+
+	return ret;
+}
+
+static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
+					struct net_device *dev,
+					s32 rssi_thold, u32 rssi_hyst)
+{
+	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
+
+	priv->cqm_rssi_thold = rssi_thold;
+	priv->cqm_rssi_hyst = rssi_hyst;
+	priv->last_cqm_event_rssi = 0;
+
+	return 0;
+}
+
+static void rndis_wlan_craft_connected_bss(struct usbnet *usbdev, u8 *bssid,
+					   struct ndis_80211_assoc_info *info)
+{
+	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
+	struct ieee80211_channel *channel;
+	struct ndis_80211_ssid ssid;
+	struct cfg80211_bss *bss;
+	s32 signal;
+	u64 timestamp;
+	u16 capability;
+	u32 beacon_period = 0;
+	__le32 rssi;
+	u8 ie_buf[34];
+	int len, ret, ie_len;
+
+	/* Get signal quality, in case of error use rssi=0 and ignore error. */
+	len = sizeof(rssi);
+	rssi = 0;
+	ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
+			      &rssi, &len);
+	signal = level_to_qual(le32_to_cpu(rssi));
+
+	netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_RSSI -> %d, "
+		   "rssi:%d, qual: %d\n", __func__, ret, le32_to_cpu(rssi),
+		   level_to_qual(le32_to_cpu(rssi)));
+
+	/* Get AP capabilities */
+	if (info) {
+		capability = le16_to_cpu(info->resp_ie.capa);
+	} else {
+		/* Set atleast ESS/IBSS capability */
+		capability = (priv->infra_mode == NDIS_80211_INFRA_INFRA) ?
+				WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS;
+	}
+
+	/* Get channel and beacon interval */
+	channel = get_current_channel(usbdev, &beacon_period);
+	if (!channel) {
+		netdev_warn(usbdev->net, "%s(): could not get channel.\n",
+					__func__);
+		return;
+	}
+
+	/* Get SSID, in case of error, use zero length SSID and ignore error. */
+	len = sizeof(ssid);
+	memset(&ssid, 0, sizeof(ssid));
+	ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_SSID,
+			      &ssid, &len);
+	netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_SSID -> %d, len: %d, ssid: "
+				"'%.32s'\n", __func__, ret,
+				le32_to_cpu(ssid.length), ssid.essid);
+
+	if (le32_to_cpu(ssid.length) > 32)
+		ssid.length = cpu_to_le32(32);
+
+	ie_buf[0] = WLAN_EID_SSID;
+	ie_buf[1] = le32_to_cpu(ssid.length);
+	memcpy(&ie_buf[2], ssid.essid, le32_to_cpu(ssid.length));
+
+	ie_len = le32_to_cpu(ssid.length) + 2;
+
+	/* no tsf */
+	timestamp = 0;
+
+	netdev_dbg(usbdev->net, "%s(): channel:%d(freq), bssid:[%pM], tsf:%d, "
+		"capa:%x, beacon int:%d, resp_ie(len:%d, essid:'%.32s'), "
+		"signal:%d\n", __func__, (channel ? channel->center_freq : -1),
+		bssid, (u32)timestamp, capability, beacon_period, ie_len,
+		ssid.essid, signal);
+
+	bss = cfg80211_inform_bss(priv->wdev.wiphy, channel,
+				  CFG80211_BSS_FTYPE_UNKNOWN, bssid,
+				  timestamp, capability, beacon_period,
+				  ie_buf, ie_len, signal, GFP_KERNEL);
+	cfg80211_put_bss(priv->wdev.wiphy, bss);
+}
+
+/*
+ * workers, indication handlers, device poller
+ */
+static void rndis_wlan_do_link_up_work(struct usbnet *usbdev)
+{
+	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
+	struct ndis_80211_assoc_info *info = NULL;
+	u8 bssid[ETH_ALEN];
+	unsigned int resp_ie_len, req_ie_len;
+	unsigned int offset;
+	u8 *req_ie, *resp_ie;
+	int ret;
+	bool roamed = false;
+	bool match_bss;
+
+	if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
+		/* received media connect indication while connected, either
+		 * device reassociated with same AP or roamed to new. */
+		roamed = true;
+	}
+
+	req_ie_len = 0;
+	resp_ie_len = 0;
+	req_ie = NULL;
+	resp_ie = NULL;
+
+	if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
+		info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
+		if (!info) {
+			/* No memory? Try resume work later */
+			set_bit(WORK_LINK_UP, &priv->work_pending);
+			queue_work(priv->workqueue, &priv->work);
+			return;
+		}
+
+		/* Get association info IEs from device. */
+		ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE);
+		if (!ret) {
+			req_ie_len = le32_to_cpu(info->req_ie_length);
+			if (req_ie_len > CONTROL_BUFFER_SIZE)
+				req_ie_len = CONTROL_BUFFER_SIZE;
+			if (req_ie_len != 0) {
+				offset = le32_to_cpu(info->offset_req_ies);
+
+				if (offset > CONTROL_BUFFER_SIZE)
+					offset = CONTROL_BUFFER_SIZE;
+
+				req_ie = (u8 *)info + offset;
+
+				if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
+					req_ie_len =
+						CONTROL_BUFFER_SIZE - offset;
+			}
+
+			resp_ie_len = le32_to_cpu(info->resp_ie_length);
+			if (resp_ie_len > CONTROL_BUFFER_SIZE)
+				resp_ie_len = CONTROL_BUFFER_SIZE;
+			if (resp_ie_len != 0) {
+				offset = le32_to_cpu(info->offset_resp_ies);
+
+				if (offset > CONTROL_BUFFER_SIZE)
+					offset = CONTROL_BUFFER_SIZE;
+
+				resp_ie = (u8 *)info + offset;
+
+				if (offset + resp_ie_len > CONTROL_BUFFER_SIZE)
+					resp_ie_len =
+						CONTROL_BUFFER_SIZE - offset;
+			}
+		} else {
+			/* Since rndis_wlan_craft_connected_bss() might use info
+			 * later and expects info to contain valid data if
+			 * non-null, free info and set NULL here.
+			 */
+			kfree(info);
+			info = NULL;
+		}
+	} else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
+		return;
+
+	ret = get_bssid(usbdev, bssid);
+	if (ret < 0)
+		memset(bssid, 0, sizeof(bssid));
+
+	netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
+		   bssid, roamed ? " roamed" : "");
+
+	/* Internal bss list in device should contain at least the currently
+	 * connected bss and we can get it to cfg80211 with
+	 * rndis_check_bssid_list().
+	 *
+	 * NDIS spec says: "If the device is associated, but the associated
+	 *  BSSID is not in its BSSID scan list, then the driver must add an
+	 *  entry for the BSSID at the end of the data that it returns in
+	 *  response to query of RNDIS_OID_802_11_BSSID_LIST."
+	 *
+	 * NOTE: Seems to be true for BCM4320b variant, but not BCM4320a.
+	 */
+	match_bss = false;
+	rndis_check_bssid_list(usbdev, bssid, &match_bss);
+
+	if (!is_zero_ether_addr(bssid) && !match_bss) {
+		/* Couldn't get bss from device, we need to manually craft bss
+		 * for cfg80211.
+		 */
+		rndis_wlan_craft_connected_bss(usbdev, bssid, info);
+	}
+
+	if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
+		if (!roamed) {
+			cfg80211_connect_result(usbdev->net, bssid, req_ie,
+						req_ie_len, resp_ie,
+						resp_ie_len, 0, GFP_KERNEL);
+		} else {
+			struct cfg80211_roam_info roam_info = {
+				.links[0].channel =
+					get_current_channel(usbdev, NULL),
+				.links[0].bssid = bssid,
+				.req_ie = req_ie,
+				.req_ie_len = req_ie_len,
+				.resp_ie = resp_ie,
+				.resp_ie_len = resp_ie_len,
+			};
+
+			cfg80211_roamed(usbdev->net, &roam_info, GFP_KERNEL);
+		}
+	} else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
+		cfg80211_ibss_joined(usbdev->net, bssid,
+				     get_current_channel(usbdev, NULL),
+				     GFP_KERNEL);
+
+	kfree(info);
+
+	priv->connected = true;
+	memcpy(priv->bssid, bssid, ETH_ALEN);
+
+	usbnet_resume_rx(usbdev);
+	netif_carrier_on(usbdev->net);
+}
+
+static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
+{
+	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
+
+	if (priv->connected) {
+		priv->connected = false;
+		eth_zero_addr(priv->bssid);
+
+		deauthenticate(usbdev);
+
+		cfg80211_disconnected(usbdev->net, 0, NULL, 0, true, GFP_KERNEL);
+	}
+
+	netif_carrier_off(usbdev->net);
+}
+
+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;
+
+	if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
+		rndis_wlan_do_link_up_work(usbdev);
+
+	if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
+		rndis_wlan_do_link_down_work(usbdev);
+
+	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_auth_indication(struct usbnet *usbdev,
+				struct ndis_80211_status_indication *indication,
+				int len)
+{
+	u8 *buf;
+	const char *type;
+	int flags, buflen, key_id;
+	bool pairwise_error, group_error;
+	struct ndis_80211_auth_request *auth_req;
+	enum nl80211_key_type key_type;
+
+	/* must have at least one array entry */
+	if (len < offsetof(struct ndis_80211_status_indication, u) +
+				sizeof(struct ndis_80211_auth_request)) {
+		netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
+			    len);
+		return;
+	}
+
+	buf = (void *)&indication->u.auth_request[0];
+	buflen = len - offsetof(struct ndis_80211_status_indication, u);
+
+	while (buflen >= sizeof(*auth_req)) {
+		auth_req = (void *)buf;
+		if (buflen < le32_to_cpu(auth_req->length))
+			return;
+		type = "unknown";
+		flags = le32_to_cpu(auth_req->flags);
+		pairwise_error = false;
+		group_error = false;
+
+		if (flags & 0x1)
+			type = "reauth request";
+		if (flags & 0x2)
+			type = "key update request";
+		if (flags & 0x6) {
+			pairwise_error = true;
+			type = "pairwise_error";
+		}
+		if (flags & 0xe) {
+			group_error = true;
+			type = "group_error";
+		}
+
+		netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
+			    type, le32_to_cpu(auth_req->flags));
+
+		if (pairwise_error) {
+			key_type = NL80211_KEYTYPE_PAIRWISE;
+			key_id = -1;
+
+			cfg80211_michael_mic_failure(usbdev->net,
+							auth_req->bssid,
+							key_type, key_id, NULL,
+							GFP_KERNEL);
+		}
+
+		if (group_error) {
+			key_type = NL80211_KEYTYPE_GROUP;
+			key_id = -1;
+
+			cfg80211_michael_mic_failure(usbdev->net,
+							auth_req->bssid,
+							key_type, key_id, NULL,
+							GFP_KERNEL);
+		}
+
+		buflen -= le32_to_cpu(auth_req->length);
+		buf += le32_to_cpu(auth_req->length);
+	}
+}
+
+static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
+				struct ndis_80211_status_indication *indication,
+				int len)
+{
+	struct ndis_80211_pmkid_cand_list *cand_list;
+	int list_len, expected_len, i;
+
+	if (len < offsetof(struct ndis_80211_status_indication, u) +
+				sizeof(struct ndis_80211_pmkid_cand_list)) {
+		netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
+			    len);
+		return;
+	}
+
+	list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
+			sizeof(struct ndis_80211_pmkid_candidate);
+	expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
+			offsetof(struct ndis_80211_status_indication, u);
+
+	if (len < expected_len) {
+		netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
+			    len, expected_len);
+		return;
+	}
+
+	cand_list = &indication->u.cand_list;
+
+	netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
+		    le32_to_cpu(cand_list->version),
+		    le32_to_cpu(cand_list->num_candidates));
+
+	if (le32_to_cpu(cand_list->version) != 1)
+		return;
+
+	for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
+		struct ndis_80211_pmkid_candidate *cand =
+						&cand_list->candidate_list[i];
+		bool preauth = !!(cand->flags & NDIS_80211_PMKID_CAND_PREAUTH);
+
+		netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, preauth: %d, bssid: %pM\n",
+			   i, le32_to_cpu(cand->flags), preauth, cand->bssid);
+
+		cfg80211_pmksa_candidate_notify(usbdev->net, i, cand->bssid,
+						preauth, GFP_ATOMIC);
+	}
+}
+
+static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
+			struct rndis_indicate *msg, int buflen)
+{
+	struct ndis_80211_status_indication *indication;
+	unsigned int len, offset;
+
+	offset = offsetof(struct rndis_indicate, status) +
+			le32_to_cpu(msg->offset);
+	len = le32_to_cpu(msg->length);
+
+	if (len < 8) {
+		netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
+			    len);
+		return;
+	}
+
+	if (len > buflen || offset > buflen || offset + len > buflen) {
+		netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
+			    offset + len, buflen);
+		return;
+	}
+
+	indication = (void *)((u8 *)msg + offset);
+
+	switch (le32_to_cpu(indication->status_type)) {
+	case NDIS_80211_STATUSTYPE_RADIOSTATE:
+		netdev_info(usbdev->net, "radio state indication: %i\n",
+			    le32_to_cpu(indication->u.radio_status));
+		return;
+
+	case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
+		netdev_info(usbdev->net, "media stream mode indication: %i\n",
+			    le32_to_cpu(indication->u.media_stream_mode));
+		return;
+
+	case NDIS_80211_STATUSTYPE_AUTHENTICATION:
+		rndis_wlan_auth_indication(usbdev, indication, len);
+		return;
+
+	case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
+		rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
+		return;
+
+	default:
+		netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
+			    le32_to_cpu(indication->status_type));
+	}
+}
+
+static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
+{
+	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
+	struct rndis_indicate *msg = ind;
+
+	switch (le32_to_cpu(msg->status)) {
+	case RNDIS_STATUS_MEDIA_CONNECT:
+		if (priv->current_command_oid == RNDIS_OID_802_11_ADD_KEY) {
+			/* RNDIS_OID_802_11_ADD_KEY causes sometimes extra
+			 * "media connect" indications which confuses driver
+			 * and userspace to think that device is
+			 * roaming/reassociating when it isn't.
+			 */
+			netdev_dbg(usbdev->net, "ignored RNDIS_OID_802_11_ADD_KEY triggered 'media connect'\n");
+			return;
+		}
+
+		usbnet_pause_rx(usbdev);
+
+		netdev_info(usbdev->net, "media connect\n");
+
+		/* queue work to avoid recursive calls into rndis_command */
+		set_bit(WORK_LINK_UP, &priv->work_pending);
+		queue_work(priv->workqueue, &priv->work);
+		break;
+
+	case RNDIS_STATUS_MEDIA_DISCONNECT:
+		netdev_info(usbdev->net, "media disconnect\n");
+
+		/* queue work to avoid recursive calls into rndis_command */
+		set_bit(WORK_LINK_DOWN, &priv->work_pending);
+		queue_work(priv->workqueue, &priv->work);
+		break;
+
+	case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
+		rndis_wlan_media_specific_indication(usbdev, msg, buflen);
+		break;
+
+	default:
+		netdev_info(usbdev->net, "indication: 0x%08x\n",
+			    le32_to_cpu(msg->status));
+		break;
+	}
+}
+
+static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy)
+{
+	struct {
+		__le32	num_items;
+		__le32	items[8];
+	} networks_supported;
+	struct ndis_80211_capability caps;
+	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,
+				 RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED,
+				 &networks_supported, &len);
+	if (!retval) {
+		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;
+			}
+		}
+	}
+
+	/* get device 802.11 capabilities, number of PMKIDs */
+	len = sizeof(caps);
+	retval = rndis_query_oid(usbdev,
+				 RNDIS_OID_802_11_CAPABILITY,
+				 &caps, &len);
+	if (!retval) {
+		netdev_dbg(usbdev->net, "RNDIS_OID_802_11_CAPABILITY -> len %d, "
+				"ver %d, pmkids %d, auth-encr-pairs %d\n",
+				le32_to_cpu(caps.length),
+				le32_to_cpu(caps.version),
+				le32_to_cpu(caps.num_pmkids),
+				le32_to_cpu(caps.num_auth_encr_pair));
+		wiphy->max_num_pmkids = le32_to_cpu(caps.num_pmkids);
+	} else
+		wiphy->max_num_pmkids = 0;
+
+	return retval;
+}
+
+static void rndis_do_cqm(struct usbnet *usbdev, s32 rssi)
+{
+	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
+	enum nl80211_cqm_rssi_threshold_event event;
+	int thold, hyst, last_event;
+
+	if (priv->cqm_rssi_thold >= 0 || rssi >= 0)
+		return;
+	if (priv->infra_mode != NDIS_80211_INFRA_INFRA)
+		return;
+
+	last_event = priv->last_cqm_event_rssi;
+	thold = priv->cqm_rssi_thold;
+	hyst = priv->cqm_rssi_hyst;
+
+	if (rssi < thold && (last_event == 0 || rssi < last_event - hyst))
+		event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
+	else if (rssi > thold && (last_event == 0 || rssi > last_event + hyst))
+		event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
+	else
+		return;
+
+	priv->last_cqm_event_rssi = rssi;
+	cfg80211_cqm_rssi_notify(usbdev->net, event, rssi, GFP_KERNEL);
+}
+
+#define DEVICE_POLLER_JIFFIES (HZ)
+static void rndis_device_poller(struct work_struct *work)
+{
+	struct rndis_wlan_private *priv =
+		container_of(work, struct rndis_wlan_private,
+							dev_poller_work.work);
+	struct usbnet *usbdev = priv->usbdev;
+	__le32 rssi, tmp;
+	int len, ret, j;
+	int update_jiffies = DEVICE_POLLER_JIFFIES;
+	void *buf;
+
+	/* Only check/do workaround when connected. Calling is_associated()
+	 * also polls device with rndis_command() and catches for media link
+	 * indications.
+	 */
+	if (!is_associated(usbdev)) {
+		/* Workaround bad scanning in BCM4320a devices with active
+		 * background scanning when not associated.
+		 */
+		if (priv->device_type == RNDIS_BCM4320A && priv->radio_on &&
+		    !priv->scan_request) {
+			/* Get previous scan results */
+			rndis_check_bssid_list(usbdev, NULL, NULL);
+
+			/* Initiate new scan */
+			rndis_start_bssid_list_scan(usbdev);
+		}
+
+		goto end;
+	}
+
+	len = sizeof(rssi);
+	ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
+			      &rssi, &len);
+	if (ret == 0) {
+		priv->last_qual = level_to_qual(le32_to_cpu(rssi));
+		rndis_do_cqm(usbdev, le32_to_cpu(rssi));
+	}
+
+	netdev_dbg(usbdev->net, "dev-poller: RNDIS_OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
+		   ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
+
+	/* 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 (priv->param_workaround_interval > 0 && priv->last_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 > DEVICE_POLLER_JIFFIES)
+			j = DEVICE_POLLER_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,
+			      RNDIS_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,
+				RNDIS_OID_802_11_BSSID_LIST,
+				buf, &len);
+		kfree(buf);
+	}
+
+end:
+	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->dev_poller_work,
+								update_jiffies);
+}
+
+/*
+ * driver/device initialization
+ */
+static void rndis_copy_module_params(struct usbnet *usbdev, int device_type)
+{
+	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
+
+	priv->device_type = device_type;
+
+	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;
+}
+
+static int unknown_early_init(struct usbnet *usbdev)
+{
+	/* copy module parameters for unknown so that iwconfig reports txpower
+	 * and workaround parameter is copied to private structure correctly.
+	 */
+	rndis_copy_module_params(usbdev, RNDIS_UNKNOWN);
+
+	/* This is unknown device, so do not try set configuration parameters.
+	 */
+
+	return 0;
+}
+
+static int bcm4320a_early_init(struct usbnet *usbdev)
+{
+	/* copy module parameters for bcm4320a so that iwconfig reports txpower
+	 * and workaround parameter is copied to private structure correctly.
+	 */
+	rndis_copy_module_params(usbdev, RNDIS_BCM4320A);
+
+	/* 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];
+
+	rndis_copy_module_params(usbdev, RNDIS_BCM4320B);
+
+	/* Early initialization settings, setting these won't have effect
+	 * if called after generic_rndis_bind().
+	 */
+
+	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_get_stats64	= dev_get_tstats64,
+	.ndo_set_mac_address 	= eth_mac_addr,
+	.ndo_validate_addr	= eth_validate_addr,
+	.ndo_set_rx_mode	= 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;
+	priv->usbdev = usbdev;
+
+	mutex_init(&priv->command_lock);
+
+	/* because rndis_command() sleeps we need to use workqueue */
+	priv->workqueue = create_singlethread_workqueue("rndis_wlan");
+	if (!priv->workqueue) {
+		wiphy_free(wiphy);
+		return -ENOMEM;
+	}
+	INIT_WORK(&priv->work, rndis_wlan_worker);
+	INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
+	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 = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST);
+	retval = rndis_set_oid(usbdev,
+			       RNDIS_OID_GEN_CURRENT_PACKET_FILTER,
+			       &tmp, sizeof(tmp));
+
+	len = sizeof(tmp);
+	retval = rndis_query_oid(usbdev,
+				 RNDIS_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;
+
+	/* 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/encr information based on priv->caps */
+	rndis_wlan_get_caps(usbdev, wiphy);
+
+	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[NL80211_BAND_2GHZ] = &priv->band;
+	wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
+
+	memcpy(priv->cipher_suites, rndis_cipher_suites,
+						sizeof(rndis_cipher_suites));
+	wiphy->cipher_suites = priv->cipher_suites;
+	wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
+
+	set_wiphy_dev(wiphy, &usbdev->udev->dev);
+
+	if (wiphy_register(wiphy)) {
+		retval = -ENODEV;
+		goto fail;
+	}
+
+	set_default_iw_params(usbdev);
+
+	priv->power_mode = -1;
+
+	/* set default rts/frag */
+	rndis_set_wiphy_params(wiphy,
+			WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
+
+	/* turn radio off on init */
+	priv->radio_on = false;
+	disassociate(usbdev, false);
+	netif_carrier_off(usbdev->net);
+
+	return 0;
+
+fail:
+	cancel_delayed_work_sync(&priv->dev_poller_work);
+	cancel_delayed_work_sync(&priv->scan_work);
+	cancel_work_sync(&priv->work);
+	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, false);
+
+	cancel_delayed_work_sync(&priv->dev_poller_work);
+	cancel_delayed_work_sync(&priv->scan_work);
+	cancel_work_sync(&priv->work);
+	destroy_workqueue(priv->workqueue);
+
+	rndis_unbind(usbdev, intf);
+
+	wiphy_unregister(priv->wdev.wiphy);
+	wiphy_free(priv->wdev.wiphy);
+}
+
+static int rndis_wlan_reset(struct usbnet *usbdev)
+{
+	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
+	int retval;
+
+	netdev_dbg(usbdev->net, "%s()\n", __func__);
+
+	retval = rndis_reset(usbdev);
+	if (retval)
+		netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
+
+	/* rndis_reset cleared multicast list, so restore here.
+	   (set_multicast_list() also turns on current packet filter) */
+	set_multicast_list(usbdev);
+
+	queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
+		round_jiffies_relative(DEVICE_POLLER_JIFFIES));
+
+	return deauthenticate(usbdev);
+}
+
+static int rndis_wlan_stop(struct usbnet *usbdev)
+{
+	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
+	int retval;
+	__le32 filter;
+
+	netdev_dbg(usbdev->net, "%s()\n", __func__);
+
+	retval = disassociate(usbdev, false);
+
+	priv->work_pending = 0;
+	cancel_delayed_work_sync(&priv->dev_poller_work);
+	cancel_delayed_work_sync(&priv->scan_work);
+	cancel_work_sync(&priv->work);
+	flush_workqueue(priv->workqueue);
+
+	if (priv->scan_request) {
+		struct cfg80211_scan_info info = {
+			.aborted = true,
+		};
+
+		cfg80211_scan_done(priv->scan_request, &info);
+		priv->scan_request = NULL;
+	}
+
+	/* Set current packet filter zero to block receiving data packets from
+	   device. */
+	filter = 0;
+	rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
+								sizeof(filter));
+
+	return retval;
+}
+
+static const struct driver_info	bcm4320b_info = {
+	.description =	"Wireless RNDIS device, BCM4320b based",
+	.flags =	FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
+				FLAG_AVOID_UNLINK_URBS,
+	.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,
+	.stop =		rndis_wlan_stop,
+	.early_init =	bcm4320b_early_init,
+	.indication =	rndis_wlan_indication,
+};
+
+static const struct driver_info	bcm4320a_info = {
+	.description =	"Wireless RNDIS device, BCM4320a based",
+	.flags =	FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
+				FLAG_AVOID_UNLINK_URBS,
+	.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,
+	.stop =		rndis_wlan_stop,
+	.early_init =	bcm4320a_early_init,
+	.indication =	rndis_wlan_indication,
+};
+
+static const struct driver_info rndis_wlan_info = {
+	.description =	"Wireless RNDIS device",
+	.flags =	FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
+				FLAG_AVOID_UNLINK_URBS,
+	.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,
+	.stop =		rndis_wlan_stop,
+	.early_init =	unknown_early_init,
+	.indication =	rndis_wlan_indication,
+};
+
+/*-------------------------------------------------------------------------*/
+
+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,
+	.disable_hub_initiated_lpm = 1,
+};
+
+module_usb_driver(rndis_wlan_driver);
+
+MODULE_AUTHOR("Bjorge Dijkstra");
+MODULE_AUTHOR("Jussi Kivilinna");
+MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
+MODULE_LICENSE("GPL");
+