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Root/drivers/net/wireless/rndis_wlan.c

1	/*
2	* Driver for RNDIS based wireless USB devices.
3	*
4	* Copyright (C) 2007 by Bjorge Dijkstra <bjd@jooz.net>
5	* Copyright (C) 2008-2009 by Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
6	*
7	* This program is free software; you can redistribute it and/or modify
8	* it under the terms of the GNU General Public License as published by
9	* the Free Software Foundation; either version 2 of the License, or
10	* (at your option) any later version.
11	*
12	* This program is distributed in the hope that it will be useful,
13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15	* GNU General Public License for more details.
16	*
17	* You should have received a copy of the GNU General Public License
18	* along with this program; if not, write to the Free Software
19	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20	*
21	* Portions of this file are based on NDISwrapper project,
22	* Copyright (C) 2003-2005 Pontus Fuchs, Giridhar Pemmasani
23	* http://ndiswrapper.sourceforge.net/
24	*/
25
26	// #define DEBUG // error path messages, extra info
27	// #define VERBOSE // more; success messages
28
29	#include <linux/module.h>
30	#include <linux/init.h>
31	#include <linux/netdevice.h>
32	#include <linux/etherdevice.h>
33	#include <linux/ethtool.h>
34	#include <linux/workqueue.h>
35	#include <linux/mutex.h>
36	#include <linux/mii.h>
37	#include <linux/usb.h>
38	#include <linux/usb/cdc.h>
39	#include <linux/wireless.h>
40	#include <linux/ieee80211.h>
41	#include <linux/if_arp.h>
42	#include <linux/ctype.h>
43	#include <linux/spinlock.h>
44	#include <net/iw_handler.h>
45	#include <net/cfg80211.h>
46	#include <linux/usb/usbnet.h>
47	#include <linux/usb/rndis_host.h>
48
49
50	/* NOTE: All these are settings for Broadcom chipset */
51	static char modparam_country[4] = "EU";
52	module_param_string(country, modparam_country, 4, 0444);
53	MODULE_PARM_DESC(country, "Country code (ISO 3166-1 alpha-2), default: EU");
54
55	static int modparam_frameburst = 1;
56	module_param_named(frameburst, modparam_frameburst, int, 0444);
57	MODULE_PARM_DESC(frameburst, "enable frame bursting (default: on)");
58
59	static int modparam_afterburner = 0;
60	module_param_named(afterburner, modparam_afterburner, int, 0444);
61	MODULE_PARM_DESC(afterburner,
62	"enable afterburner aka '125 High Speed Mode' (default: off)");
63
64	static int modparam_power_save = 0;
65	module_param_named(power_save, modparam_power_save, int, 0444);
66	MODULE_PARM_DESC(power_save,
67	"set power save mode: 0=off, 1=on, 2=fast (default: off)");
68
69	static int modparam_power_output = 3;
70	module_param_named(power_output, modparam_power_output, int, 0444);
71	MODULE_PARM_DESC(power_output,
72	"set power output: 0=25%, 1=50%, 2=75%, 3=100% (default: 100%)");
73
74	static int modparam_roamtrigger = -70;
75	module_param_named(roamtrigger, modparam_roamtrigger, int, 0444);
76	MODULE_PARM_DESC(roamtrigger,
77	"set roaming dBm trigger: -80=optimize for distance, "
78	"-60=bandwidth (default: -70)");
79
80	static int modparam_roamdelta = 1;
81	module_param_named(roamdelta, modparam_roamdelta, int, 0444);
82	MODULE_PARM_DESC(roamdelta,
83	"set roaming tendency: 0=aggressive, 1=moderate, "
84	"2=conservative (default: moderate)");
85
86	static int modparam_workaround_interval = 500;
87	module_param_named(workaround_interval, modparam_workaround_interval,
88	int, 0444);
89	MODULE_PARM_DESC(workaround_interval,
90	"set stall workaround interval in msecs (default: 500)");
91
92
93	/* various RNDIS OID defs */
94	#define OID_GEN_LINK_SPEED cpu_to_le32(0x00010107)
95	#define OID_GEN_RNDIS_CONFIG_PARAMETER cpu_to_le32(0x0001021b)
96
97	#define OID_GEN_XMIT_OK cpu_to_le32(0x00020101)
98	#define OID_GEN_RCV_OK cpu_to_le32(0x00020102)
99	#define OID_GEN_XMIT_ERROR cpu_to_le32(0x00020103)
100	#define OID_GEN_RCV_ERROR cpu_to_le32(0x00020104)
101	#define OID_GEN_RCV_NO_BUFFER cpu_to_le32(0x00020105)
102
103	#define OID_802_3_PERMANENT_ADDRESS cpu_to_le32(0x01010101)
104	#define OID_802_3_CURRENT_ADDRESS cpu_to_le32(0x01010102)
105	#define OID_802_3_MULTICAST_LIST cpu_to_le32(0x01010103)
106	#define OID_802_3_MAXIMUM_LIST_SIZE cpu_to_le32(0x01010104)
107
108	#define OID_802_11_BSSID cpu_to_le32(0x0d010101)
109	#define OID_802_11_SSID cpu_to_le32(0x0d010102)
110	#define OID_802_11_INFRASTRUCTURE_MODE cpu_to_le32(0x0d010108)
111	#define OID_802_11_ADD_WEP cpu_to_le32(0x0d010113)
112	#define OID_802_11_REMOVE_WEP cpu_to_le32(0x0d010114)
113	#define OID_802_11_DISASSOCIATE cpu_to_le32(0x0d010115)
114	#define OID_802_11_AUTHENTICATION_MODE cpu_to_le32(0x0d010118)
115	#define OID_802_11_PRIVACY_FILTER cpu_to_le32(0x0d010119)
116	#define OID_802_11_BSSID_LIST_SCAN cpu_to_le32(0x0d01011a)
117	#define OID_802_11_ENCRYPTION_STATUS cpu_to_le32(0x0d01011b)
118	#define OID_802_11_ADD_KEY cpu_to_le32(0x0d01011d)
119	#define OID_802_11_REMOVE_KEY cpu_to_le32(0x0d01011e)
120	#define OID_802_11_ASSOCIATION_INFORMATION cpu_to_le32(0x0d01011f)
121	#define OID_802_11_PMKID cpu_to_le32(0x0d010123)
122	#define OID_802_11_NETWORK_TYPES_SUPPORTED cpu_to_le32(0x0d010203)
123	#define OID_802_11_NETWORK_TYPE_IN_USE cpu_to_le32(0x0d010204)
124	#define OID_802_11_TX_POWER_LEVEL cpu_to_le32(0x0d010205)
125	#define OID_802_11_RSSI cpu_to_le32(0x0d010206)
126	#define OID_802_11_RSSI_TRIGGER cpu_to_le32(0x0d010207)
127	#define OID_802_11_FRAGMENTATION_THRESHOLD cpu_to_le32(0x0d010209)
128	#define OID_802_11_RTS_THRESHOLD cpu_to_le32(0x0d01020a)
129	#define OID_802_11_SUPPORTED_RATES cpu_to_le32(0x0d01020e)
130	#define OID_802_11_CONFIGURATION cpu_to_le32(0x0d010211)
131	#define OID_802_11_BSSID_LIST cpu_to_le32(0x0d010217)
132
133
134	/* Typical noise/maximum signal level values taken from ndiswrapper iw_ndis.h */
135	#define WL_NOISE -96 /* typical noise level in dBm */
136	#define WL_SIGMAX -32 /* typical maximum signal level in dBm */
137
138
139	/* Assume that Broadcom 4320 (only chipset at time of writing known to be
140	* based on wireless rndis) has default txpower of 13dBm.
141	* This value is from Linksys WUSB54GSC User Guide, Appendix F: Specifications.
142	* 13dBm == 19.9mW
143	*/
144	#define BCM4320_DEFAULT_TXPOWER 20
145
146
147	/* codes for "status" field of completion messages */
148	#define RNDIS_STATUS_ADAPTER_NOT_READY cpu_to_le32(0xc0010011)
149	#define RNDIS_STATUS_ADAPTER_NOT_OPEN cpu_to_le32(0xc0010012)
150
151
152	/* NDIS data structures. Taken from wpa_supplicant driver_ndis.c
153	* slightly modified for datatype endianess, etc
154	*/
155	#define NDIS_802_11_LENGTH_SSID 32
156	#define NDIS_802_11_LENGTH_RATES 8
157	#define NDIS_802_11_LENGTH_RATES_EX 16
158
159	enum ndis_80211_net_type {
160	NDIS_80211_TYPE_FREQ_HOP,
161	NDIS_80211_TYPE_DIRECT_SEQ,
162	NDIS_80211_TYPE_OFDM_A,
163	NDIS_80211_TYPE_OFDM_G
164	};
165
166	enum ndis_80211_net_infra {
167	NDIS_80211_INFRA_ADHOC,
168	NDIS_80211_INFRA_INFRA,
169	NDIS_80211_INFRA_AUTO_UNKNOWN
170	};
171
172	enum ndis_80211_auth_mode {
173	NDIS_80211_AUTH_OPEN,
174	NDIS_80211_AUTH_SHARED,
175	NDIS_80211_AUTH_AUTO_SWITCH,
176	NDIS_80211_AUTH_WPA,
177	NDIS_80211_AUTH_WPA_PSK,
178	NDIS_80211_AUTH_WPA_NONE,
179	NDIS_80211_AUTH_WPA2,
180	NDIS_80211_AUTH_WPA2_PSK
181	};
182
183	enum ndis_80211_encr_status {
184	NDIS_80211_ENCR_WEP_ENABLED,
185	NDIS_80211_ENCR_DISABLED,
186	NDIS_80211_ENCR_WEP_KEY_ABSENT,
187	NDIS_80211_ENCR_NOT_SUPPORTED,
188	NDIS_80211_ENCR_TKIP_ENABLED,
189	NDIS_80211_ENCR_TKIP_KEY_ABSENT,
190	NDIS_80211_ENCR_CCMP_ENABLED,
191	NDIS_80211_ENCR_CCMP_KEY_ABSENT
192	};
193
194	enum ndis_80211_priv_filter {
195	NDIS_80211_PRIV_ACCEPT_ALL,
196	NDIS_80211_PRIV_8021X_WEP
197	};
198
199	enum ndis_80211_addkey_bits {
200	NDIS_80211_ADDKEY_8021X_AUTH = cpu_to_le32(1 << 28),
201	NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ = cpu_to_le32(1 << 29),
202	NDIS_80211_ADDKEY_PAIRWISE_KEY = cpu_to_le32(1 << 30),
203	NDIS_80211_ADDKEY_TRANSMIT_KEY = cpu_to_le32(1 << 31)
204	};
205
206	enum ndis_80211_addwep_bits {
207	NDIS_80211_ADDWEP_PERCLIENT_KEY = cpu_to_le32(1 << 30),
208	NDIS_80211_ADDWEP_TRANSMIT_KEY = cpu_to_le32(1 << 31)
209	};
210
211	struct ndis_80211_ssid {
212	__le32 length;
213	u8 essid[NDIS_802_11_LENGTH_SSID];
214	} __attribute__((packed));
215
216	struct ndis_80211_conf_freq_hop {
217	__le32 length;
218	__le32 hop_pattern;
219	__le32 hop_set;
220	__le32 dwell_time;
221	} __attribute__((packed));
222
223	struct ndis_80211_conf {
224	__le32 length;
225	__le32 beacon_period;
226	__le32 atim_window;
227	__le32 ds_config;
228	struct ndis_80211_conf_freq_hop fh_config;
229	} __attribute__((packed));
230
231	struct ndis_80211_bssid_ex {
232	__le32 length;
233	u8 mac[6];
234	u8 padding[2];
235	struct ndis_80211_ssid ssid;
236	__le32 privacy;
237	__le32 rssi;
238	__le32 net_type;
239	struct ndis_80211_conf config;
240	__le32 net_infra;
241	u8 rates[NDIS_802_11_LENGTH_RATES_EX];
242	__le32 ie_length;
243	u8 ies[0];
244	} __attribute__((packed));
245
246	struct ndis_80211_bssid_list_ex {
247	__le32 num_items;
248	struct ndis_80211_bssid_ex bssid[0];
249	} __attribute__((packed));
250
251	struct ndis_80211_fixed_ies {
252	u8 timestamp[8];
253	__le16 beacon_interval;
254	__le16 capabilities;
255	} __attribute__((packed));
256
257	struct ndis_80211_wep_key {
258	__le32 size;
259	__le32 index;
260	__le32 length;
261	u8 material[32];
262	} __attribute__((packed));
263
264	struct ndis_80211_key {
265	__le32 size;
266	__le32 index;
267	__le32 length;
268	u8 bssid[6];
269	u8 padding[6];
270	u8 rsc[8];
271	u8 material[32];
272	} __attribute__((packed));
273
274	struct ndis_80211_remove_key {
275	__le32 size;
276	__le32 index;
277	u8 bssid[6];
278	} __attribute__((packed));
279
280	struct ndis_config_param {
281	__le32 name_offs;
282	__le32 name_length;
283	__le32 type;
284	__le32 value_offs;
285	__le32 value_length;
286	} __attribute__((packed));
287
288	struct ndis_80211_assoc_info {
289	__le32 length;
290	__le16 req_ies;
291	struct req_ie {
292	__le16 capa;
293	__le16 listen_interval;
294	u8 cur_ap_address[6];
295	} req_ie;
296	__le32 req_ie_length;
297	__le32 offset_req_ies;
298	__le16 resp_ies;
299	struct resp_ie {
300	__le16 capa;
301	__le16 status_code;
302	__le16 assoc_id;
303	} resp_ie;
304	__le32 resp_ie_length;
305	__le32 offset_resp_ies;
306	} __attribute__((packed));
307
308	/* these have to match what is in wpa_supplicant */
309	enum wpa_alg { WPA_ALG_NONE, WPA_ALG_WEP, WPA_ALG_TKIP, WPA_ALG_CCMP };
310	enum wpa_cipher { CIPHER_NONE, CIPHER_WEP40, CIPHER_TKIP, CIPHER_CCMP,
311	CIPHER_WEP104 };
312	enum wpa_key_mgmt { KEY_MGMT_802_1X, KEY_MGMT_PSK, KEY_MGMT_NONE,
313	KEY_MGMT_802_1X_NO_WPA, KEY_MGMT_WPA_NONE };
314
315	/*
316	* private data
317	*/
318	#define NET_TYPE_11FB 0
319
320	#define CAP_MODE_80211A 1
321	#define CAP_MODE_80211B 2
322	#define CAP_MODE_80211G 4
323	#define CAP_MODE_MASK 7
324
325	#define WORK_LINK_UP (1<<0)
326	#define WORK_LINK_DOWN (1<<1)
327	#define WORK_SET_MULTICAST_LIST (1<<2)
328
329	#define COMMAND_BUFFER_SIZE (CONTROL_BUFFER_SIZE + sizeof(struct rndis_set))
330
331	static const struct ieee80211_channel rndis_channels[] = {
332	{ .center_freq = 2412 },
333	{ .center_freq = 2417 },
334	{ .center_freq = 2422 },
335	{ .center_freq = 2427 },
336	{ .center_freq = 2432 },
337	{ .center_freq = 2437 },
338	{ .center_freq = 2442 },
339	{ .center_freq = 2447 },
340	{ .center_freq = 2452 },
341	{ .center_freq = 2457 },
342	{ .center_freq = 2462 },
343	{ .center_freq = 2467 },
344	{ .center_freq = 2472 },
345	{ .center_freq = 2484 },
346	};
347
348	static const struct ieee80211_rate rndis_rates[] = {
349	{ .bitrate = 10 },
350	{ .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
351	{ .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
352	{ .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
353	{ .bitrate = 60 },
354	{ .bitrate = 90 },
355	{ .bitrate = 120 },
356	{ .bitrate = 180 },
357	{ .bitrate = 240 },
358	{ .bitrate = 360 },
359	{ .bitrate = 480 },
360	{ .bitrate = 540 }
361	};
362
363	/* RNDIS device private data */
364	struct rndis_wlan_private {
365	struct usbnet *usbdev;
366
367	struct wireless_dev wdev;
368
369	struct cfg80211_scan_request *scan_request;
370
371	struct workqueue_struct *workqueue;
372	struct delayed_work stats_work;
373	struct delayed_work scan_work;
374	struct work_struct work;
375	struct mutex command_lock;
376	spinlock_t stats_lock;
377	unsigned long work_pending;
378
379	struct ieee80211_supported_band band;
380	struct ieee80211_channel channels[ARRAY_SIZE(rndis_channels)];
381	struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)];
382
383	struct iw_statistics iwstats;
384	struct iw_statistics privstats;
385
386	int caps;
387	int multicast_size;
388
389	/* module parameters */
390	char param_country[4];
391	int param_frameburst;
392	int param_afterburner;
393	int param_power_save;
394	int param_power_output;
395	int param_roamtrigger;
396	int param_roamdelta;
397	u32 param_workaround_interval;
398
399	/* hardware state */
400	int radio_on;
401	int infra_mode;
402	struct ndis_80211_ssid essid;
403
404	/* encryption stuff */
405	int encr_tx_key_index;
406	char encr_keys[4][32];
407	int encr_key_len[4];
408	char encr_key_wpa[4];
409	int wpa_version;
410	int wpa_keymgmt;
411	int wpa_authalg;
412	int wpa_ie_len;
413	u8 *wpa_ie;
414	int wpa_cipher_pair;
415	int wpa_cipher_group;
416
417	u8 command_buffer[COMMAND_BUFFER_SIZE];
418	};
419
420	/*
421	* cfg80211 ops
422	*/
423	static int rndis_change_virtual_intf(struct wiphy *wiphy, int ifindex,
424	enum nl80211_iftype type, u32 *flags,
425	struct vif_params *params);
426
427	static int rndis_scan(struct wiphy wiphy, struct net_device dev,
428	struct cfg80211_scan_request *request);
429
430	static struct cfg80211_ops rndis_config_ops = {
431	.change_virtual_intf = rndis_change_virtual_intf,
432	.scan = rndis_scan,
433	};
434
435	static void *rndis_wiphy_privid = &rndis_wiphy_privid;
436
437	static const int bcm4320_power_output[4] = { 25, 50, 75, 100 };
438
439	static const unsigned char zero_bssid[ETH_ALEN] = {0,};
440	static const unsigned char ffff_bssid[ETH_ALEN] = { 0xff, 0xff, 0xff,
441	0xff, 0xff, 0xff };
442
443
444	static struct rndis_wlan_private get_rndis_wlan_priv(struct usbnet dev)
445	{
446	return (struct rndis_wlan_private *)dev->driver_priv;
447	}
448
449
450	static u32 get_bcm4320_power(struct rndis_wlan_private *priv)
451	{
452	return BCM4320_DEFAULT_TXPOWER *
453	bcm4320_power_output[priv->param_power_output] / 100;
454	}
455
456
457	/* translate error code */
458	static int rndis_error_status(__le32 rndis_status)
459	{
460	int ret = -EINVAL;
461	switch (rndis_status) {
462	case RNDIS_STATUS_SUCCESS:
463	ret = 0;
464	break;
465	case RNDIS_STATUS_FAILURE:
466	case RNDIS_STATUS_INVALID_DATA:
467	ret = -EINVAL;
468	break;
469	case RNDIS_STATUS_NOT_SUPPORTED:
470	ret = -EOPNOTSUPP;
471	break;
472	case RNDIS_STATUS_ADAPTER_NOT_READY:
473	case RNDIS_STATUS_ADAPTER_NOT_OPEN:
474	ret = -EBUSY;
475	break;
476	}
477	return ret;
478	}
479
480
481	static int rndis_query_oid(struct usbnet dev, __le32 oid, void data, int *len)
482	{
483	struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
484	union {
485	void *buf;
486	struct rndis_msg_hdr *header;
487	struct rndis_query *get;
488	struct rndis_query_c *get_c;
489	} u;
490	int ret, buflen;
491
492	buflen = len + sizeof(u.get);
493	if (buflen < CONTROL_BUFFER_SIZE)
494	buflen = CONTROL_BUFFER_SIZE;
495
496	if (buflen > COMMAND_BUFFER_SIZE) {
497	u.buf = kmalloc(buflen, GFP_KERNEL);
498	if (!u.buf)
499	return -ENOMEM;
500	} else {
501	u.buf = priv->command_buffer;
502	}
503
504	mutex_lock(&priv->command_lock);
505
506	memset(u.get, 0, sizeof *u.get);
507	u.get->msg_type = RNDIS_MSG_QUERY;
508	u.get->msg_len = cpu_to_le32(sizeof *u.get);
509	u.get->oid = oid;
510
511	ret = rndis_command(dev, u.header, buflen);
512	if (ret == 0) {
513	ret = le32_to_cpu(u.get_c->len);
514	len = (len > ret) ? ret : *len;
515	memcpy(data, u.buf + le32_to_cpu(u.get_c->offset) + 8, *len);
516	ret = rndis_error_status(u.get_c->status);
517	}
518
519	mutex_unlock(&priv->command_lock);
520
521	if (u.buf != priv->command_buffer)
522	kfree(u.buf);
523	return ret;
524	}
525
526
527	static int rndis_set_oid(struct usbnet dev, __le32 oid, void data, int len)
528	{
529	struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
530	union {
531	void *buf;
532	struct rndis_msg_hdr *header;
533	struct rndis_set *set;
534	struct rndis_set_c *set_c;
535	} u;
536	int ret, buflen;
537
538	buflen = len + sizeof(*u.set);
539	if (buflen < CONTROL_BUFFER_SIZE)
540	buflen = CONTROL_BUFFER_SIZE;
541
542	if (buflen > COMMAND_BUFFER_SIZE) {
543	u.buf = kmalloc(buflen, GFP_KERNEL);
544	if (!u.buf)
545	return -ENOMEM;
546	} else {
547	u.buf = priv->command_buffer;
548	}
549
550	mutex_lock(&priv->command_lock);
551
552	memset(u.set, 0, sizeof *u.set);
553	u.set->msg_type = RNDIS_MSG_SET;
554	u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
555	u.set->oid = oid;
556	u.set->len = cpu_to_le32(len);
557	u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
558	u.set->handle = cpu_to_le32(0);
559	memcpy(u.buf + sizeof(*u.set), data, len);
560
561	ret = rndis_command(dev, u.header, buflen);
562	if (ret == 0)
563	ret = rndis_error_status(u.set_c->status);
564
565	mutex_unlock(&priv->command_lock);
566
567	if (u.buf != priv->command_buffer)
568	kfree(u.buf);
569	return ret;
570	}
571
572
573	/*
574	* Specs say that we can only set config parameters only soon after device
575	* initialization.
576	* value_type: 0 = u32, 2 = unicode string
577	*/
578	static int rndis_set_config_parameter(struct usbnet dev, char param,
579	int value_type, void *value)
580	{
581	struct ndis_config_param *infobuf;
582	int value_len, info_len, param_len, ret, i;
583	__le16 *unibuf;
584	__le32 *dst_value;
585
586	if (value_type == 0)
587	value_len = sizeof(__le32);
588	else if (value_type == 2)
589	value_len = strlen(value) * sizeof(__le16);
590	else
591	return -EINVAL;
592
593	param_len = strlen(param) * sizeof(__le16);
594	info_len = sizeof(*infobuf) + param_len + value_len;
595
596	#ifdef DEBUG
597	info_len += 12;
598	#endif
599	infobuf = kmalloc(info_len, GFP_KERNEL);
600	if (!infobuf)
601	return -ENOMEM;
602
603	#ifdef DEBUG
604	info_len -= 12;
605	/* extra 12 bytes are for padding (debug output) */
606	memset(infobuf, 0xCC, info_len + 12);
607	#endif
608
609	if (value_type == 2)
610	devdbg(dev, "setting config parameter: %s, value: %s",
611	param, (u8 *)value);
612	else
613	devdbg(dev, "setting config parameter: %s, value: %d",
614	param, (u32 )value);
615
616	infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
617	infobuf->name_length = cpu_to_le32(param_len);
618	infobuf->type = cpu_to_le32(value_type);
619	infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
620	infobuf->value_length = cpu_to_le32(value_len);
621
622	/* simple string to unicode string conversion */
623	unibuf = (void )infobuf + sizeof(infobuf);
624	for (i = 0; i < param_len / sizeof(__le16); i++)
625	unibuf[i] = cpu_to_le16(param[i]);
626
627	if (value_type == 2) {
628	unibuf = (void )infobuf + sizeof(infobuf) + param_len;
629	for (i = 0; i < value_len / sizeof(__le16); i++)
630	unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
631	} else {
632	dst_value = (void )infobuf + sizeof(infobuf) + param_len;
633	dst_value = cpu_to_le32((u32 *)value);
634	}
635
636	#ifdef DEBUG
637	devdbg(dev, "info buffer (len: %d):", info_len);
638	for (i = 0; i < info_len; i += 12) {
639	u32 tmp = (u32 )((u8 *)infobuf + i);
640	devdbg(dev, "%08X:%08X:%08X",
641	cpu_to_be32(tmp[0]),
642	cpu_to_be32(tmp[1]),
643	cpu_to_be32(tmp[2]));
644	}
645	#endif
646
647	ret = rndis_set_oid(dev, OID_GEN_RNDIS_CONFIG_PARAMETER,
648	infobuf, info_len);
649	if (ret != 0)
650	devdbg(dev, "setting rndis config parameter failed, %d.", ret);
651
652	kfree(infobuf);
653	return ret;
654	}
655
656	static int rndis_set_config_parameter_str(struct usbnet *dev,
657	char param, char value)
658	{
659	return(rndis_set_config_parameter(dev, param, 2, value));
660	}
661
662	/static int rndis_set_config_parameter_u32(struct usbnet dev,
663	char *param, u32 value)
664	{
665	return(rndis_set_config_parameter(dev, param, 0, &value));
666	}*/
667
668
669	/*
670	* data conversion functions
671	*/
672	static int level_to_qual(int level)
673	{
674	int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
675	return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
676	}
677
678
679	static void dsconfig_to_freq(unsigned int dsconfig, struct iw_freq *freq)
680	{
681	freq->e = 0;
682	freq->i = 0;
683	freq->flags = 0;
684
685	/* see comment in wireless.h above the "struct iw_freq"
686	* definition for an explanation of this if
687	* NOTE: 1000000 is due to the kHz
688	*/
689	if (dsconfig > 1000000) {
690	freq->m = dsconfig / 10;
691	freq->e = 1;
692	} else
693	freq->m = dsconfig;
694
695	/* convert from kHz to Hz */
696	freq->e += 3;
697	}
698
699
700	static int freq_to_dsconfig(struct iw_freq freq, unsigned int dsconfig)
701	{
702	if (freq->m < 1000 && freq->e == 0) {
703	if (freq->m >= 1 && freq->m <= 14)
704	dsconfig = ieee80211_dsss_chan_to_freq(freq->m) 1000;
705	else
706	return -1;
707	} else {
708	int i;
709	*dsconfig = freq->m;
710	for (i = freq->e; i > 0; i--)
711	dsconfig = 10;
712	*dsconfig /= 1000;
713	}
714
715	return 0;
716	}
717
718
719	/*
720	* common functions
721	*/
722	static int
723	add_wep_key(struct usbnet usbdev, char key, int key_len, int index);
724
725	static int get_essid(struct usbnet usbdev, struct ndis_80211_ssid ssid)
726	{
727	int ret, len;
728
729	len = sizeof(*ssid);
730	ret = rndis_query_oid(usbdev, OID_802_11_SSID, ssid, &len);
731
732	if (ret != 0)
733	ssid->length = 0;
734
735	#ifdef DEBUG
736	{
737	unsigned char tmp[NDIS_802_11_LENGTH_SSID + 1];
738
739	memcpy(tmp, ssid->essid, le32_to_cpu(ssid->length));
740	tmp[le32_to_cpu(ssid->length)] = 0;
741	devdbg(usbdev, "get_essid: '%s', ret: %d", tmp, ret);
742	}
743	#endif
744	return ret;
745	}
746
747
748	static int set_essid(struct usbnet usbdev, struct ndis_80211_ssid ssid)
749	{
750	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
751	int ret;
752
753	ret = rndis_set_oid(usbdev, OID_802_11_SSID, ssid, sizeof(*ssid));
754	if (ret == 0) {
755	memcpy(&priv->essid, ssid, sizeof(priv->essid));
756	priv->radio_on = 1;
757	devdbg(usbdev, "set_essid: radio_on = 1");
758	}
759
760	return ret;
761	}
762
763
764	static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
765	{
766	int ret, len;
767
768	len = ETH_ALEN;
769	ret = rndis_query_oid(usbdev, OID_802_11_BSSID, bssid, &len);
770
771	if (ret != 0)
772	memset(bssid, 0, ETH_ALEN);
773
774	return ret;
775	}
776
777	static int get_association_info(struct usbnet *usbdev,
778	struct ndis_80211_assoc_info *info, int len)
779	{
780	return rndis_query_oid(usbdev, OID_802_11_ASSOCIATION_INFORMATION,
781	info, &len);
782	}
783
784	static int is_associated(struct usbnet *usbdev)
785	{
786	u8 bssid[ETH_ALEN];
787	int ret;
788
789	ret = get_bssid(usbdev, bssid);
790
791	return(ret == 0 && memcmp(bssid, zero_bssid, ETH_ALEN) != 0);
792	}
793
794
795	static int disassociate(struct usbnet *usbdev, int reset_ssid)
796	{
797	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
798	struct ndis_80211_ssid ssid;
799	int i, ret = 0;
800
801	if (priv->radio_on) {
802	ret = rndis_set_oid(usbdev, OID_802_11_DISASSOCIATE, NULL, 0);
803	if (ret == 0) {
804	priv->radio_on = 0;
805	devdbg(usbdev, "disassociate: radio_on = 0");
806
807	if (reset_ssid)
808	msleep(100);
809	}
810	}
811
812	/* disassociate causes radio to be turned off; if reset_ssid
813	* is given, set random ssid to enable radio */
814	if (reset_ssid) {
815	ssid.length = cpu_to_le32(sizeof(ssid.essid));
816	get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
817	ssid.essid[0] = 0x1;
818	ssid.essid[1] = 0xff;
819	for (i = 2; i < sizeof(ssid.essid); i++)
820	ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
821	ret = set_essid(usbdev, &ssid);
822	}
823	return ret;
824	}
825
826
827	static int set_auth_mode(struct usbnet *usbdev, int wpa_version, int authalg)
828	{
829	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
830	__le32 tmp;
831	int auth_mode, ret;
832
833	devdbg(usbdev, "set_auth_mode: wpa_version=0x%x authalg=0x%x "
834	"keymgmt=0x%x", wpa_version, authalg, priv->wpa_keymgmt);
835
836	if (wpa_version & IW_AUTH_WPA_VERSION_WPA2) {
837	if (priv->wpa_keymgmt & IW_AUTH_KEY_MGMT_802_1X)
838	auth_mode = NDIS_80211_AUTH_WPA2;
839	else
840	auth_mode = NDIS_80211_AUTH_WPA2_PSK;
841	} else if (wpa_version & IW_AUTH_WPA_VERSION_WPA) {
842	if (priv->wpa_keymgmt & IW_AUTH_KEY_MGMT_802_1X)
843	auth_mode = NDIS_80211_AUTH_WPA;
844	else if (priv->wpa_keymgmt & IW_AUTH_KEY_MGMT_PSK)
845	auth_mode = NDIS_80211_AUTH_WPA_PSK;
846	else
847	auth_mode = NDIS_80211_AUTH_WPA_NONE;
848	} else if (authalg & IW_AUTH_ALG_SHARED_KEY) {
849	if (authalg & IW_AUTH_ALG_OPEN_SYSTEM)
850	auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
851	else
852	auth_mode = NDIS_80211_AUTH_SHARED;
853	} else
854	auth_mode = NDIS_80211_AUTH_OPEN;
855
856	tmp = cpu_to_le32(auth_mode);
857	ret = rndis_set_oid(usbdev, OID_802_11_AUTHENTICATION_MODE, &tmp,
858	sizeof(tmp));
859	if (ret != 0) {
860	devwarn(usbdev, "setting auth mode failed (%08X)", ret);
861	return ret;
862	}
863
864	priv->wpa_version = wpa_version;
865	priv->wpa_authalg = authalg;
866	return 0;
867	}
868
869
870	static int set_priv_filter(struct usbnet *usbdev)
871	{
872	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
873	__le32 tmp;
874
875	devdbg(usbdev, "set_priv_filter: wpa_version=0x%x", priv->wpa_version);
876
877	if (priv->wpa_version & IW_AUTH_WPA_VERSION_WPA2 \|\|
878	priv->wpa_version & IW_AUTH_WPA_VERSION_WPA)
879	tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
880	else
881	tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
882
883	return rndis_set_oid(usbdev, OID_802_11_PRIVACY_FILTER, &tmp,
884	sizeof(tmp));
885	}
886
887
888	static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
889	{
890	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
891	__le32 tmp;
892	int encr_mode, ret;
893
894	devdbg(usbdev, "set_encr_mode: cipher_pair=0x%x cipher_group=0x%x",
895	pairwise,
896	groupwise);
897
898	if (pairwise & IW_AUTH_CIPHER_CCMP)
899	encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
900	else if (pairwise & IW_AUTH_CIPHER_TKIP)
901	encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
902	else if (pairwise &
903	(IW_AUTH_CIPHER_WEP40 \| IW_AUTH_CIPHER_WEP104))
904	encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
905	else if (groupwise & IW_AUTH_CIPHER_CCMP)
906	encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
907	else if (groupwise & IW_AUTH_CIPHER_TKIP)
908	encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
909	else
910	encr_mode = NDIS_80211_ENCR_DISABLED;
911
912	tmp = cpu_to_le32(encr_mode);
913	ret = rndis_set_oid(usbdev, OID_802_11_ENCRYPTION_STATUS, &tmp,
914	sizeof(tmp));
915	if (ret != 0) {
916	devwarn(usbdev, "setting encr mode failed (%08X)", ret);
917	return ret;
918	}
919
920	priv->wpa_cipher_pair = pairwise;
921	priv->wpa_cipher_group = groupwise;
922	return 0;
923	}
924
925
926	static int set_assoc_params(struct usbnet *usbdev)
927	{
928	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
929
930	set_auth_mode(usbdev, priv->wpa_version, priv->wpa_authalg);
931	set_priv_filter(usbdev);
932	set_encr_mode(usbdev, priv->wpa_cipher_pair, priv->wpa_cipher_group);
933
934	return 0;
935	}
936
937
938	static int set_infra_mode(struct usbnet *usbdev, int mode)
939	{
940	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
941	__le32 tmp;
942	int ret, i;
943
944	devdbg(usbdev, "set_infra_mode: infra_mode=0x%x", priv->infra_mode);
945
946	tmp = cpu_to_le32(mode);
947	ret = rndis_set_oid(usbdev, OID_802_11_INFRASTRUCTURE_MODE, &tmp,
948	sizeof(tmp));
949	if (ret != 0) {
950	devwarn(usbdev, "setting infra mode failed (%08X)", ret);
951	return ret;
952	}
953
954	/* NDIS drivers clear keys when infrastructure mode is
955	* changed. But Linux tools assume otherwise. So set the
956	* keys */
957	if (priv->wpa_keymgmt == 0 \|\|
958	priv->wpa_keymgmt == IW_AUTH_KEY_MGMT_802_1X) {
959	for (i = 0; i < 4; i++) {
960	if (priv->encr_key_len[i] > 0 && !priv->encr_key_wpa[i])
961	add_wep_key(usbdev, priv->encr_keys[i],
962	priv->encr_key_len[i], i);
963	}
964	}
965
966	priv->infra_mode = mode;
967	return 0;
968	}
969
970
971	static void set_default_iw_params(struct usbnet *usbdev)
972	{
973	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
974
975	priv->wpa_keymgmt = 0;
976	priv->wpa_version = 0;
977
978	set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
979	set_auth_mode(usbdev, IW_AUTH_WPA_VERSION_DISABLED,
980	IW_AUTH_ALG_OPEN_SYSTEM);
981	set_priv_filter(usbdev);
982	set_encr_mode(usbdev, IW_AUTH_CIPHER_NONE, IW_AUTH_CIPHER_NONE);
983	}
984
985
986	static int deauthenticate(struct usbnet *usbdev)
987	{
988	int ret;
989
990	ret = disassociate(usbdev, 1);
991	set_default_iw_params(usbdev);
992	return ret;
993	}
994
995
996	/* index must be 0 - N, as per NDIS */
997	static int add_wep_key(struct usbnet usbdev, char key, int key_len, int index)
998	{
999	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1000	struct ndis_80211_wep_key ndis_key;
1001	int ret;
1002
1003	if (key_len <= 0 \|\| key_len > 32 \|\| index < 0 \|\| index >= 4)
1004	return -EINVAL;
1005
1006	memset(&ndis_key, 0, sizeof(ndis_key));
1007
1008	ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1009	ndis_key.length = cpu_to_le32(key_len);
1010	ndis_key.index = cpu_to_le32(index);
1011	memcpy(&ndis_key.material, key, key_len);
1012
1013	if (index == priv->encr_tx_key_index) {
1014	ndis_key.index \|= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1015	ret = set_encr_mode(usbdev, IW_AUTH_CIPHER_WEP104,
1016	IW_AUTH_CIPHER_NONE);
1017	if (ret)
1018	devwarn(usbdev, "encryption couldn't be enabled (%08X)",
1019	ret);
1020	}
1021
1022	ret = rndis_set_oid(usbdev, OID_802_11_ADD_WEP, &ndis_key,
1023	sizeof(ndis_key));
1024	if (ret != 0) {
1025	devwarn(usbdev, "adding encryption key %d failed (%08X)",
1026	index+1, ret);
1027	return ret;
1028	}
1029
1030	priv->encr_key_len[index] = key_len;
1031	priv->encr_key_wpa[index] = 0;
1032	memcpy(&priv->encr_keys[index], key, key_len);
1033
1034	return 0;
1035	}
1036
1037
1038	static int add_wpa_key(struct usbnet usbdev, const u8 key, int key_len,
1039	int index, const struct sockaddr *addr,
1040	const u8 *rx_seq, int alg, int flags)
1041	{
1042	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1043	struct ndis_80211_key ndis_key;
1044	int ret;
1045
1046	if (index < 0 \|\| index >= 4)
1047	return -EINVAL;
1048	if (key_len > sizeof(ndis_key.material) \|\| key_len < 0)
1049	return -EINVAL;
1050	if ((flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) && !rx_seq)
1051	return -EINVAL;
1052	if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !addr)
1053	return -EINVAL;
1054
1055	devdbg(usbdev, "add_wpa_key(%i): flags:%i%i%i", index,
1056	!!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1057	!!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1058	!!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1059
1060	memset(&ndis_key, 0, sizeof(ndis_key));
1061
1062	ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1063	sizeof(ndis_key.material) + key_len);
1064	ndis_key.length = cpu_to_le32(key_len);
1065	ndis_key.index = cpu_to_le32(index) \| flags;
1066
1067	if (alg == IW_ENCODE_ALG_TKIP && key_len == 32) {
1068	/* wpa_supplicant gives us the Michael MIC RX/TX keys in
1069	* different order than NDIS spec, so swap the order here. */
1070	memcpy(ndis_key.material, key, 16);
1071	memcpy(ndis_key.material + 16, key + 24, 8);
1072	memcpy(ndis_key.material + 24, key + 16, 8);
1073	} else
1074	memcpy(ndis_key.material, key, key_len);
1075
1076	if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1077	memcpy(ndis_key.rsc, rx_seq, 6);
1078
1079	if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1080	/* pairwise key */
1081	memcpy(ndis_key.bssid, addr->sa_data, ETH_ALEN);
1082	} else {
1083	/* group key */
1084	if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1085	memset(ndis_key.bssid, 0xff, ETH_ALEN);
1086	else
1087	get_bssid(usbdev, ndis_key.bssid);
1088	}
1089
1090	ret = rndis_set_oid(usbdev, OID_802_11_ADD_KEY, &ndis_key,
1091	le32_to_cpu(ndis_key.size));
1092	devdbg(usbdev, "add_wpa_key: OID_802_11_ADD_KEY -> %08X", ret);
1093	if (ret != 0)
1094	return ret;
1095
1096	priv->encr_key_len[index] = key_len;
1097	priv->encr_key_wpa[index] = 1;
1098
1099	if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1100	priv->encr_tx_key_index = index;
1101
1102	return 0;
1103	}
1104
1105
1106	/* remove_key is for both wep and wpa */
1107	static int remove_key(struct usbnet *usbdev, int index, u8 bssid[ETH_ALEN])
1108	{
1109	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1110	struct ndis_80211_remove_key remove_key;
1111	__le32 keyindex;
1112	int ret;
1113
1114	if (priv->encr_key_len[index] == 0)
1115	return 0;
1116
1117	priv->encr_key_len[index] = 0;
1118	priv->encr_key_wpa[index] = 0;
1119	memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1120
1121	if (priv->wpa_cipher_pair == IW_AUTH_CIPHER_TKIP \|\|
1122	priv->wpa_cipher_pair == IW_AUTH_CIPHER_CCMP \|\|
1123	priv->wpa_cipher_group == IW_AUTH_CIPHER_TKIP \|\|
1124	priv->wpa_cipher_group == IW_AUTH_CIPHER_CCMP) {
1125	remove_key.size = cpu_to_le32(sizeof(remove_key));
1126	remove_key.index = cpu_to_le32(index);
1127	if (bssid) {
1128	/* pairwise key */
1129	if (memcmp(bssid, ffff_bssid, ETH_ALEN) != 0)
1130	remove_key.index \|=
1131	NDIS_80211_ADDKEY_PAIRWISE_KEY;
1132	memcpy(remove_key.bssid, bssid,
1133	sizeof(remove_key.bssid));
1134	} else
1135	memset(remove_key.bssid, 0xff,
1136	sizeof(remove_key.bssid));
1137
1138	ret = rndis_set_oid(usbdev, OID_802_11_REMOVE_KEY, &remove_key,
1139	sizeof(remove_key));
1140	if (ret != 0)
1141	return ret;
1142	} else {
1143	keyindex = cpu_to_le32(index);
1144	ret = rndis_set_oid(usbdev, OID_802_11_REMOVE_WEP, &keyindex,
1145	sizeof(keyindex));
1146	if (ret != 0) {
1147	devwarn(usbdev,
1148	"removing encryption key %d failed (%08X)",
1149	index, ret);
1150	return ret;
1151	}
1152	}
1153
1154	/* if it is transmit key, disable encryption */
1155	if (index == priv->encr_tx_key_index)
1156	set_encr_mode(usbdev, IW_AUTH_CIPHER_NONE, IW_AUTH_CIPHER_NONE);
1157
1158	return 0;
1159	}
1160
1161
1162	static void set_multicast_list(struct usbnet *usbdev)
1163	{
1164	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1165	struct dev_mc_list *mclist;
1166	__le32 filter;
1167	int ret, i, size;
1168	char *buf;
1169
1170	filter = RNDIS_PACKET_TYPE_DIRECTED \| RNDIS_PACKET_TYPE_BROADCAST;
1171
1172	if (usbdev->net->flags & IFF_PROMISC) {
1173	filter \|= RNDIS_PACKET_TYPE_PROMISCUOUS \|
1174	RNDIS_PACKET_TYPE_ALL_LOCAL;
1175	} else if (usbdev->net->flags & IFF_ALLMULTI \|\|
1176	usbdev->net->mc_count > priv->multicast_size) {
1177	filter \|= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1178	} else if (usbdev->net->mc_count > 0) {
1179	size = min(priv->multicast_size, usbdev->net->mc_count);
1180	buf = kmalloc(size * ETH_ALEN, GFP_KERNEL);
1181	if (!buf) {
1182	devwarn(usbdev,
1183	"couldn't alloc %d bytes of memory",
1184	size * ETH_ALEN);
1185	return;
1186	}
1187
1188	mclist = usbdev->net->mc_list;
1189	for (i = 0; i < size && mclist; mclist = mclist->next) {
1190	if (mclist->dmi_addrlen != ETH_ALEN)
1191	continue;
1192
1193	memcpy(buf + i * ETH_ALEN, mclist->dmi_addr, ETH_ALEN);
1194	i++;
1195	}
1196
1197	ret = rndis_set_oid(usbdev, OID_802_3_MULTICAST_LIST, buf,
1198	i * ETH_ALEN);
1199	if (ret == 0 && i > 0)
1200	filter \|= RNDIS_PACKET_TYPE_MULTICAST;
1201	else
1202	filter \|= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1203
1204	devdbg(usbdev, "OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d",
1205	i, priv->multicast_size, ret);
1206
1207	kfree(buf);
1208	}
1209
1210	ret = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &filter,
1211	sizeof(filter));
1212	if (ret < 0) {
1213	devwarn(usbdev, "couldn't set packet filter: %08x",
1214	le32_to_cpu(filter));
1215	}
1216
1217	devdbg(usbdev, "OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d",
1218	le32_to_cpu(filter), ret);
1219	}
1220
1221
1222	/*
1223	* cfg80211 ops
1224	*/
1225	static int rndis_change_virtual_intf(struct wiphy *wiphy, int ifindex,
1226	enum nl80211_iftype type, u32 *flags,
1227	struct vif_params *params)
1228	{
1229	struct net_device *dev;
1230	struct usbnet *usbdev;
1231	int mode;
1232
1233	/* we're under RTNL */
1234	dev = __dev_get_by_index(&init_net, ifindex);
1235	if (!dev)
1236	return -ENODEV;
1237	usbdev = netdev_priv(dev);
1238
1239	switch (type) {
1240	case NL80211_IFTYPE_ADHOC:
1241	mode = NDIS_80211_INFRA_ADHOC;
1242	break;
1243	case NL80211_IFTYPE_STATION:
1244	mode = NDIS_80211_INFRA_INFRA;
1245	break;
1246	default:
1247	return -EINVAL;
1248	}
1249
1250	return set_infra_mode(usbdev, mode);
1251	}
1252
1253
1254	#define SCAN_DELAY_JIFFIES (HZ)
1255	static int rndis_scan(struct wiphy wiphy, struct net_device dev,
1256	struct cfg80211_scan_request *request)
1257	{
1258	struct usbnet *usbdev = netdev_priv(dev);
1259	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1260	int ret;
1261	__le32 tmp;
1262
1263	devdbg(usbdev, "cfg80211.scan");
1264
1265	if (!request)
1266	return -EINVAL;
1267
1268	if (priv->scan_request && priv->scan_request != request)
1269	return -EBUSY;
1270
1271	priv->scan_request = request;
1272
1273	tmp = cpu_to_le32(1);
1274	ret = rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
1275	sizeof(tmp));
1276	if (ret == 0) {
1277	/* Wait before retrieving scan results from device */
1278	queue_delayed_work(priv->workqueue, &priv->scan_work,
1279	SCAN_DELAY_JIFFIES);
1280	}
1281
1282	return ret;
1283	}
1284
1285
1286	static struct cfg80211_bss rndis_bss_info_update(struct usbnet usbdev,
1287	struct ndis_80211_bssid_ex *bssid)
1288	{
1289	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1290	struct ieee80211_channel *channel;
1291	s32 signal;
1292	u64 timestamp;
1293	u16 capability;
1294	u16 beacon_interval;
1295	struct ndis_80211_fixed_ies *fixed;
1296	int ie_len, bssid_len;
1297	u8 *ie;
1298
1299	/* parse bssid structure */
1300	bssid_len = le32_to_cpu(bssid->length);
1301
1302	if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
1303	sizeof(struct ndis_80211_fixed_ies))
1304	return NULL;
1305
1306	fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
1307
1308	ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
1309	ie_len = min(bssid_len - (int)sizeof(*bssid),
1310	(int)le32_to_cpu(bssid->ie_length));
1311	ie_len -= sizeof(struct ndis_80211_fixed_ies);
1312	if (ie_len < 0)
1313	return NULL;
1314
1315	/* extract data for cfg80211_inform_bss */
1316	channel = ieee80211_get_channel(priv->wdev.wiphy,
1317	KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
1318	if (!channel)
1319	return NULL;
1320
1321	signal = level_to_qual(le32_to_cpu(bssid->rssi));
1322	timestamp = le64_to_cpu((__le64 )fixed->timestamp);
1323	capability = le16_to_cpu(fixed->capabilities);
1324	beacon_interval = le16_to_cpu(fixed->beacon_interval);
1325
1326	return cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid->mac,
1327	timestamp, capability, beacon_interval, ie, ie_len, signal,
1328	GFP_KERNEL);
1329	}
1330
1331
1332	static int rndis_check_bssid_list(struct usbnet *usbdev)
1333	{
1334	void *buf = NULL;
1335	struct ndis_80211_bssid_list_ex *bssid_list;
1336	struct ndis_80211_bssid_ex *bssid;
1337	int ret = -EINVAL, len, count, bssid_len;
1338
1339	devdbg(usbdev, "check_bssid_list");
1340
1341	len = CONTROL_BUFFER_SIZE;
1342	buf = kmalloc(len, GFP_KERNEL);
1343	if (!buf) {
1344	ret = -ENOMEM;
1345	goto out;
1346	}
1347
1348	ret = rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &len);
1349	if (ret != 0)
1350	goto out;
1351
1352	bssid_list = buf;
1353	bssid = bssid_list->bssid;
1354	bssid_len = le32_to_cpu(bssid->length);
1355	count = le32_to_cpu(bssid_list->num_items);
1356	devdbg(usbdev, "check_bssid_list: %d BSSIDs found", count);
1357
1358	while (count && ((void *)bssid + bssid_len) <= (buf + len)) {
1359	rndis_bss_info_update(usbdev, bssid);
1360
1361	bssid = (void *)bssid + bssid_len;
1362	bssid_len = le32_to_cpu(bssid->length);
1363	count--;
1364	}
1365
1366	out:
1367	kfree(buf);
1368	return ret;
1369	}
1370
1371
1372	static void rndis_get_scan_results(struct work_struct *work)
1373	{
1374	struct rndis_wlan_private *priv =
1375	container_of(work, struct rndis_wlan_private, scan_work.work);
1376	struct usbnet *usbdev = priv->usbdev;
1377	int ret;
1378
1379	devdbg(usbdev, "get_scan_results");
1380
1381	ret = rndis_check_bssid_list(usbdev);
1382
1383	cfg80211_scan_done(priv->scan_request, ret < 0);
1384
1385	priv->scan_request = NULL;
1386	}
1387
1388
1389	/*
1390	* wireless extension handlers
1391	*/
1392
1393	static int rndis_iw_commit(struct net_device *dev,
1394	struct iw_request_info info, union iwreq_data wrqu, char *extra)
1395	{
1396	/* dummy op */
1397	return 0;
1398	}
1399
1400
1401	static int rndis_iw_set_essid(struct net_device *dev,
1402	struct iw_request_info info, union iwreq_data wrqu, char *essid)
1403	{
1404	struct ndis_80211_ssid ssid;
1405	int length = wrqu->essid.length;
1406	struct usbnet *usbdev = netdev_priv(dev);
1407
1408	devdbg(usbdev, "SIOCSIWESSID: [flags:%d,len:%d] '%.32s'",
1409	wrqu->essid.flags, wrqu->essid.length, essid);
1410
1411	if (length > NDIS_802_11_LENGTH_SSID)
1412	length = NDIS_802_11_LENGTH_SSID;
1413
1414	ssid.length = cpu_to_le32(length);
1415	if (length > 0)
1416	memcpy(ssid.essid, essid, length);
1417	else
1418	memset(ssid.essid, 0, NDIS_802_11_LENGTH_SSID);
1419
1420	set_assoc_params(usbdev);
1421
1422	if (!wrqu->essid.flags \|\| length == 0)
1423	return disassociate(usbdev, 1);
1424	else
1425	return set_essid(usbdev, &ssid);
1426	}
1427
1428
1429	static int rndis_iw_get_essid(struct net_device *dev,
1430	struct iw_request_info info, union iwreq_data wrqu, char *essid)
1431	{
1432	struct ndis_80211_ssid ssid;
1433	struct usbnet *usbdev = netdev_priv(dev);
1434	int ret;
1435
1436	ret = get_essid(usbdev, &ssid);
1437
1438	if (ret == 0 && le32_to_cpu(ssid.length) > 0) {
1439	wrqu->essid.flags = 1;
1440	wrqu->essid.length = le32_to_cpu(ssid.length);
1441	memcpy(essid, ssid.essid, wrqu->essid.length);
1442	essid[wrqu->essid.length] = 0;
1443	} else {
1444	memset(essid, 0, sizeof(NDIS_802_11_LENGTH_SSID));
1445	wrqu->essid.flags = 0;
1446	wrqu->essid.length = 0;
1447	}
1448	devdbg(usbdev, "SIOCGIWESSID: %s", essid);
1449	return ret;
1450	}
1451
1452
1453	static int rndis_iw_get_bssid(struct net_device *dev,
1454	struct iw_request_info info, union iwreq_data wrqu, char *extra)
1455	{
1456	struct usbnet *usbdev = netdev_priv(dev);
1457	unsigned char bssid[ETH_ALEN];
1458	int ret;
1459
1460	ret = get_bssid(usbdev, bssid);
1461
1462	if (ret == 0)
1463	devdbg(usbdev, "SIOCGIWAP: %pM", bssid);
1464	else
1465	devdbg(usbdev, "SIOCGIWAP: <not associated>");
1466
1467	wrqu->ap_addr.sa_family = ARPHRD_ETHER;
1468	memcpy(wrqu->ap_addr.sa_data, bssid, ETH_ALEN);
1469
1470	return ret;
1471	}
1472
1473
1474	static int rndis_iw_set_bssid(struct net_device *dev,
1475	struct iw_request_info info, union iwreq_data wrqu, char *extra)
1476	{
1477	struct usbnet *usbdev = netdev_priv(dev);
1478	u8 bssid = (u8 )wrqu->ap_addr.sa_data;
1479	int ret;
1480
1481	devdbg(usbdev, "SIOCSIWAP: %pM", bssid);
1482
1483	ret = rndis_set_oid(usbdev, OID_802_11_BSSID, bssid, ETH_ALEN);
1484
1485	/* user apps may set ap's mac address, which is not required;
1486	* they may fail to work if this function fails, so return
1487	* success */
1488	if (ret)
1489	devwarn(usbdev, "setting AP mac address failed (%08X)", ret);
1490
1491	return 0;
1492	}
1493
1494
1495	static int rndis_iw_set_auth(struct net_device *dev,
1496	struct iw_request_info info, union iwreq_data wrqu, char *extra)
1497	{
1498	struct iw_param *p = &wrqu->param;
1499	struct usbnet *usbdev = netdev_priv(dev);
1500	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1501	int ret = -ENOTSUPP;
1502
1503	switch (p->flags & IW_AUTH_INDEX) {
1504	case IW_AUTH_WPA_VERSION:
1505	devdbg(usbdev, "SIOCSIWAUTH: WPA_VERSION, %08x", p->value);
1506	priv->wpa_version = p->value;
1507	ret = 0;
1508	break;
1509
1510	case IW_AUTH_CIPHER_PAIRWISE:
1511	devdbg(usbdev, "SIOCSIWAUTH: CIPHER_PAIRWISE, %08x", p->value);
1512	priv->wpa_cipher_pair = p->value;
1513	ret = 0;
1514	break;
1515
1516	case IW_AUTH_CIPHER_GROUP:
1517	devdbg(usbdev, "SIOCSIWAUTH: CIPHER_GROUP, %08x", p->value);
1518	priv->wpa_cipher_group = p->value;
1519	ret = 0;
1520	break;
1521
1522	case IW_AUTH_KEY_MGMT:
1523	devdbg(usbdev, "SIOCSIWAUTH: KEY_MGMT, %08x", p->value);
1524	priv->wpa_keymgmt = p->value;
1525	ret = 0;
1526	break;
1527
1528	case IW_AUTH_TKIP_COUNTERMEASURES:
1529	devdbg(usbdev, "SIOCSIWAUTH: TKIP_COUNTERMEASURES, %08x",
1530	p->value);
1531	ret = 0;
1532	break;
1533
1534	case IW_AUTH_DROP_UNENCRYPTED:
1535	devdbg(usbdev, "SIOCSIWAUTH: DROP_UNENCRYPTED, %08x", p->value);
1536	ret = 0;
1537	break;
1538
1539	case IW_AUTH_80211_AUTH_ALG:
1540	devdbg(usbdev, "SIOCSIWAUTH: 80211_AUTH_ALG, %08x", p->value);
1541	priv->wpa_authalg = p->value;
1542	ret = 0;
1543	break;
1544
1545	case IW_AUTH_WPA_ENABLED:
1546	devdbg(usbdev, "SIOCSIWAUTH: WPA_ENABLED, %08x", p->value);
1547	if (wrqu->param.value)
1548	deauthenticate(usbdev);
1549	ret = 0;
1550	break;
1551
1552	case IW_AUTH_RX_UNENCRYPTED_EAPOL:
1553	devdbg(usbdev, "SIOCSIWAUTH: RX_UNENCRYPTED_EAPOL, %08x",
1554	p->value);
1555	ret = 0;
1556	break;
1557
1558	case IW_AUTH_ROAMING_CONTROL:
1559	devdbg(usbdev, "SIOCSIWAUTH: ROAMING_CONTROL, %08x", p->value);
1560	ret = 0;
1561	break;
1562
1563	case IW_AUTH_PRIVACY_INVOKED:
1564	devdbg(usbdev, "SIOCSIWAUTH: invalid cmd %d",
1565	wrqu->param.flags & IW_AUTH_INDEX);
1566	return -EOPNOTSUPP;
1567
1568	default:
1569	devdbg(usbdev, "SIOCSIWAUTH: UNKNOWN %08x, %08x",
1570	p->flags & IW_AUTH_INDEX, p->value);
1571	}
1572	return ret;
1573	}
1574
1575
1576	static int rndis_iw_get_auth(struct net_device *dev,
1577	struct iw_request_info info, union iwreq_data wrqu, char *extra)
1578	{
1579	struct iw_param *p = &wrqu->param;
1580	struct usbnet *usbdev = netdev_priv(dev);
1581	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1582
1583	switch (p->flags & IW_AUTH_INDEX) {
1584	case IW_AUTH_WPA_VERSION:
1585	p->value = priv->wpa_version;
1586	break;
1587	case IW_AUTH_CIPHER_PAIRWISE:
1588	p->value = priv->wpa_cipher_pair;
1589	break;
1590	case IW_AUTH_CIPHER_GROUP:
1591	p->value = priv->wpa_cipher_group;
1592	break;
1593	case IW_AUTH_KEY_MGMT:
1594	p->value = priv->wpa_keymgmt;
1595	break;
1596	case IW_AUTH_80211_AUTH_ALG:
1597	p->value = priv->wpa_authalg;
1598	break;
1599	default:
1600	devdbg(usbdev, "SIOCGIWAUTH: invalid cmd %d",
1601	wrqu->param.flags & IW_AUTH_INDEX);
1602	return -EOPNOTSUPP;
1603	}
1604	return 0;
1605	}
1606
1607
1608	static int rndis_iw_set_encode(struct net_device *dev,
1609	struct iw_request_info info, union iwreq_data wrqu, char *extra)
1610	{
1611	struct usbnet *usbdev = netdev_priv(dev);
1612	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1613	int ret, index, key_len;
1614	u8 *key;
1615
1616	index = (wrqu->encoding.flags & IW_ENCODE_INDEX);
1617
1618	/* iwconfig gives index as 1 - N */
1619	if (index > 0)
1620	index--;
1621	else
1622	index = priv->encr_tx_key_index;
1623
1624	if (index < 0 \|\| index >= 4) {
1625	devwarn(usbdev, "encryption index out of range (%u)", index);
1626	return -EINVAL;
1627	}
1628
1629	/* remove key if disabled */
1630	if (wrqu->data.flags & IW_ENCODE_DISABLED) {
1631	if (remove_key(usbdev, index, NULL))
1632	return -EINVAL;
1633	else
1634	return 0;
1635	}
1636
1637	/* global encryption state (for all keys) */
1638	if (wrqu->data.flags & IW_ENCODE_OPEN)
1639	ret = set_auth_mode(usbdev, IW_AUTH_WPA_VERSION_DISABLED,
1640	IW_AUTH_ALG_OPEN_SYSTEM);
1641	else /if (wrqu->data.flags & IW_ENCODE_RESTRICTED)/
1642	ret = set_auth_mode(usbdev, IW_AUTH_WPA_VERSION_DISABLED,
1643	IW_AUTH_ALG_SHARED_KEY);
1644	if (ret != 0)
1645	return ret;
1646
1647	if (wrqu->data.length > 0) {
1648	key_len = wrqu->data.length;
1649	key = extra;
1650	} else {
1651	/* must be set as tx key */
1652	if (priv->encr_key_len[index] == 0)
1653	return -EINVAL;
1654	key_len = priv->encr_key_len[index];
1655	key = priv->encr_keys[index];
1656	priv->encr_tx_key_index = index;
1657	}
1658
1659	if (add_wep_key(usbdev, key, key_len, index) != 0)
1660	return -EINVAL;
1661
1662	if (index == priv->encr_tx_key_index)
1663	/* ndis drivers want essid to be set after setting encr */
1664	set_essid(usbdev, &priv->essid);
1665
1666	return 0;
1667	}
1668
1669
1670	static int rndis_iw_set_encode_ext(struct net_device *dev,
1671	struct iw_request_info info, union iwreq_data wrqu, char *extra)
1672	{
1673	struct iw_encode_ext ext = (struct iw_encode_ext )extra;
1674	struct usbnet *usbdev = netdev_priv(dev);
1675	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1676	int keyidx, flags;
1677
1678	keyidx = wrqu->encoding.flags & IW_ENCODE_INDEX;
1679
1680	/* iwconfig gives index as 1 - N */
1681	if (keyidx)
1682	keyidx--;
1683	else
1684	keyidx = priv->encr_tx_key_index;
1685
1686	if (keyidx < 0 \|\| keyidx >= 4)
1687	return -EINVAL;
1688
1689	if (ext->alg == WPA_ALG_WEP) {
1690	if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY)
1691	priv->encr_tx_key_index = keyidx;
1692	return add_wep_key(usbdev, ext->key, ext->key_len, keyidx);
1693	}
1694
1695	if ((wrqu->encoding.flags & IW_ENCODE_DISABLED) \|\|
1696	ext->alg == IW_ENCODE_ALG_NONE \|\| ext->key_len == 0)
1697	return remove_key(usbdev, keyidx, NULL);
1698
1699	flags = 0;
1700	if (ext->ext_flags & IW_ENCODE_EXT_RX_SEQ_VALID)
1701	flags \|= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
1702	if (!(ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY))
1703	flags \|= NDIS_80211_ADDKEY_PAIRWISE_KEY;
1704	if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY)
1705	flags \|= NDIS_80211_ADDKEY_TRANSMIT_KEY;
1706
1707	return add_wpa_key(usbdev, ext->key, ext->key_len, keyidx, &ext->addr,
1708	ext->rx_seq, ext->alg, flags);
1709	}
1710
1711
1712	static int rndis_iw_set_genie(struct net_device *dev,
1713	struct iw_request_info info, union iwreq_data wrqu, char *extra)
1714	{
1715	struct usbnet *usbdev = netdev_priv(dev);
1716	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1717	int ret = 0;
1718
1719	#ifdef DEBUG
1720	int j;
1721	u8 *gie = extra;
1722	for (j = 0; j < wrqu->data.length; j += 8)
1723	devdbg(usbdev,
1724	"SIOCSIWGENIE %04x - "
1725	"%02x %02x %02x %02x %02x %02x %02x %02x", j,
1726	gie[j + 0], gie[j + 1], gie[j + 2], gie[j + 3],
1727	gie[j + 4], gie[j + 5], gie[j + 6], gie[j + 7]);
1728	#endif
1729	/* clear existing IEs */
1730	if (priv->wpa_ie_len) {
1731	kfree(priv->wpa_ie);
1732	priv->wpa_ie_len = 0;
1733	}
1734
1735	/* set new IEs */
1736	priv->wpa_ie = kmalloc(wrqu->data.length, GFP_KERNEL);
1737	if (priv->wpa_ie) {
1738	priv->wpa_ie_len = wrqu->data.length;
1739	memcpy(priv->wpa_ie, extra, priv->wpa_ie_len);
1740	} else
1741	ret = -ENOMEM;
1742	return ret;
1743	}
1744
1745
1746	static int rndis_iw_get_genie(struct net_device *dev,
1747	struct iw_request_info info, union iwreq_data wrqu, char *extra)
1748	{
1749	struct usbnet *usbdev = netdev_priv(dev);
1750	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1751
1752	devdbg(usbdev, "SIOCGIWGENIE");
1753
1754	if (priv->wpa_ie_len == 0 \|\| priv->wpa_ie == NULL) {
1755	wrqu->data.length = 0;
1756	return 0;
1757	}
1758
1759	if (wrqu->data.length < priv->wpa_ie_len)
1760	return -E2BIG;
1761
1762	wrqu->data.length = priv->wpa_ie_len;
1763	memcpy(extra, priv->wpa_ie, priv->wpa_ie_len);
1764
1765	return 0;
1766	}
1767
1768
1769	static int rndis_iw_set_rts(struct net_device *dev,
1770	struct iw_request_info info, union iwreq_data wrqu, char *extra)
1771	{
1772	struct usbnet *usbdev = netdev_priv(dev);
1773	__le32 tmp;
1774	devdbg(usbdev, "SIOCSIWRTS");
1775
1776	tmp = cpu_to_le32(wrqu->rts.value);
1777	return rndis_set_oid(usbdev, OID_802_11_RTS_THRESHOLD, &tmp,
1778	sizeof(tmp));
1779	}
1780
1781
1782	static int rndis_iw_get_rts(struct net_device *dev,
1783	struct iw_request_info info, union iwreq_data wrqu, char *extra)
1784	{
1785	struct usbnet *usbdev = netdev_priv(dev);
1786	__le32 tmp;
1787	int len, ret;
1788
1789	len = sizeof(tmp);
1790	ret = rndis_query_oid(usbdev, OID_802_11_RTS_THRESHOLD, &tmp, &len);
1791	if (ret == 0) {
1792	wrqu->rts.value = le32_to_cpu(tmp);
1793	wrqu->rts.flags = 1;
1794	wrqu->rts.disabled = 0;
1795	}
1796
1797	devdbg(usbdev, "SIOCGIWRTS: %d", wrqu->rts.value);
1798
1799	return ret;
1800	}
1801
1802
1803	static int rndis_iw_set_frag(struct net_device *dev,
1804	struct iw_request_info info, union iwreq_data wrqu, char *extra)
1805	{
1806	struct usbnet *usbdev = netdev_priv(dev);
1807	__le32 tmp;
1808
1809	devdbg(usbdev, "SIOCSIWFRAG");
1810
1811	tmp = cpu_to_le32(wrqu->frag.value);
1812	return rndis_set_oid(usbdev, OID_802_11_FRAGMENTATION_THRESHOLD, &tmp,
1813	sizeof(tmp));
1814	}
1815
1816
1817	static int rndis_iw_get_frag(struct net_device *dev,
1818	struct iw_request_info info, union iwreq_data wrqu, char *extra)
1819	{
1820	struct usbnet *usbdev = netdev_priv(dev);
1821	__le32 tmp;
1822	int len, ret;
1823
1824	len = sizeof(tmp);
1825	ret = rndis_query_oid(usbdev, OID_802_11_FRAGMENTATION_THRESHOLD, &tmp,
1826	&len);
1827	if (ret == 0) {
1828	wrqu->frag.value = le32_to_cpu(tmp);
1829	wrqu->frag.flags = 1;
1830	wrqu->frag.disabled = 0;
1831	}
1832	devdbg(usbdev, "SIOCGIWFRAG: %d", wrqu->frag.value);
1833	return ret;
1834	}
1835
1836
1837	static int rndis_iw_set_freq(struct net_device *dev,
1838	struct iw_request_info info, union iwreq_data wrqu, char *extra)
1839	{
1840	struct usbnet *usbdev = netdev_priv(dev);
1841	struct ndis_80211_conf config;
1842	unsigned int dsconfig;
1843	int len, ret;
1844
1845	/* this OID is valid only when not associated */
1846	if (is_associated(usbdev))
1847	return 0;
1848
1849	dsconfig = 0;
1850	if (freq_to_dsconfig(&wrqu->freq, &dsconfig))
1851	return -EINVAL;
1852
1853	len = sizeof(config);
1854	ret = rndis_query_oid(usbdev, OID_802_11_CONFIGURATION, &config, &len);
1855	if (ret != 0) {
1856	devdbg(usbdev, "SIOCSIWFREQ: querying configuration failed");
1857	return 0;
1858	}
1859
1860	config.ds_config = cpu_to_le32(dsconfig);
1861
1862	devdbg(usbdev, "SIOCSIWFREQ: %d * 10^%d", wrqu->freq.m, wrqu->freq.e);
1863	return rndis_set_oid(usbdev, OID_802_11_CONFIGURATION, &config,
1864	sizeof(config));
1865	}
1866
1867
1868	static int rndis_iw_get_freq(struct net_device *dev,
1869	struct iw_request_info info, union iwreq_data wrqu, char *extra)
1870	{
1871	struct usbnet *usbdev = netdev_priv(dev);
1872	struct ndis_80211_conf config;
1873	int len, ret;
1874
1875	len = sizeof(config);
1876	ret = rndis_query_oid(usbdev, OID_802_11_CONFIGURATION, &config, &len);
1877	if (ret == 0)
1878	dsconfig_to_freq(le32_to_cpu(config.ds_config), &wrqu->freq);
1879
1880	devdbg(usbdev, "SIOCGIWFREQ: %d", wrqu->freq.m);
1881	return ret;
1882	}
1883
1884
1885	static int rndis_iw_get_txpower(struct net_device *dev,
1886	struct iw_request_info info, union iwreq_data wrqu, char *extra)
1887	{
1888	struct usbnet *usbdev = netdev_priv(dev);
1889	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1890	__le32 tx_power;
1891
1892	if (priv->radio_on) {
1893	/* fake since changing tx_power (by userlevel) not supported */
1894	tx_power = cpu_to_le32(get_bcm4320_power(priv));
1895
1896	wrqu->txpower.flags = IW_TXPOW_MWATT;
1897	wrqu->txpower.value = le32_to_cpu(tx_power);
1898	wrqu->txpower.disabled = 0;
1899	} else {
1900	wrqu->txpower.flags = IW_TXPOW_MWATT;
1901	wrqu->txpower.value = 0;
1902	wrqu->txpower.disabled = 1;
1903	}
1904
1905	devdbg(usbdev, "SIOCGIWTXPOW: %d", wrqu->txpower.value);
1906
1907	return 0;
1908	}
1909
1910
1911	static int rndis_iw_set_txpower(struct net_device *dev,
1912	struct iw_request_info info, union iwreq_data wrqu, char *extra)
1913	{
1914	struct usbnet *usbdev = netdev_priv(dev);
1915	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1916	__le32 tx_power = 0;
1917
1918	if (!wrqu->txpower.disabled) {
1919	if (wrqu->txpower.flags == IW_TXPOW_MWATT)
1920	tx_power = cpu_to_le32(wrqu->txpower.value);
1921	else { /* wrqu->txpower.flags == IW_TXPOW_DBM */
1922	if (wrqu->txpower.value > 20)
1923	tx_power = cpu_to_le32(128);
1924	else if (wrqu->txpower.value < -43)
1925	tx_power = cpu_to_le32(127);
1926	else {
1927	signed char tmp;
1928	tmp = wrqu->txpower.value;
1929	tmp = -12 - tmp;
1930	tmp <<= 2;
1931	tx_power = cpu_to_le32((unsigned char)tmp);
1932	}
1933	}
1934	}
1935
1936	devdbg(usbdev, "SIOCSIWTXPOW: %d", le32_to_cpu(tx_power));
1937
1938	if (le32_to_cpu(tx_power) != 0) {
1939	/* txpower unsupported, just turn radio on */
1940	if (!priv->radio_on)
1941	return disassociate(usbdev, 1);
1942	return 0; /* all ready on */
1943	}
1944
1945	/* tx_power == 0, turn off radio */
1946	return disassociate(usbdev, 0);
1947	}
1948
1949
1950	static int rndis_iw_get_rate(struct net_device *dev,
1951	struct iw_request_info info, union iwreq_data wrqu, char *extra)
1952	{
1953	struct usbnet *usbdev = netdev_priv(dev);
1954	__le32 tmp;
1955	int ret, len;
1956
1957	len = sizeof(tmp);
1958	ret = rndis_query_oid(usbdev, OID_GEN_LINK_SPEED, &tmp, &len);
1959	if (ret == 0) {
1960	wrqu->bitrate.value = le32_to_cpu(tmp) * 100;
1961	wrqu->bitrate.disabled = 0;
1962	wrqu->bitrate.flags = 1;
1963	}
1964	return ret;
1965	}
1966
1967
1968	static int rndis_iw_set_mlme(struct net_device *dev,
1969	struct iw_request_info info, union iwreq_data wrqu, char *extra)
1970	{
1971	struct usbnet *usbdev = netdev_priv(dev);
1972	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1973	struct iw_mlme mlme = (struct iw_mlme )extra;
1974	unsigned char bssid[ETH_ALEN];
1975
1976	get_bssid(usbdev, bssid);
1977
1978	if (memcmp(bssid, mlme->addr.sa_data, ETH_ALEN))
1979	return -EINVAL;
1980
1981	switch (mlme->cmd) {
1982	case IW_MLME_DEAUTH:
1983	return deauthenticate(usbdev);
1984	case IW_MLME_DISASSOC:
1985	return disassociate(usbdev, priv->radio_on);
1986	default:
1987	return -EOPNOTSUPP;
1988	}
1989
1990	return 0;
1991	}
1992
1993
1994	static struct iw_statistics rndis_get_wireless_stats(struct net_device dev)
1995	{
1996	struct usbnet *usbdev = netdev_priv(dev);
1997	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1998	unsigned long flags;
1999
2000	spin_lock_irqsave(&priv->stats_lock, flags);
2001	memcpy(&priv->iwstats, &priv->privstats, sizeof(priv->iwstats));
2002	spin_unlock_irqrestore(&priv->stats_lock, flags);
2003
2004	return &priv->iwstats;
2005	}
2006
2007
2008	#define IW_IOCTL(x) [(x) - SIOCSIWCOMMIT]
2009	static const iw_handler rndis_iw_handler[] =
2010	{
2011	IW_IOCTL(SIOCSIWCOMMIT) = rndis_iw_commit,
2012	IW_IOCTL(SIOCGIWNAME) = (iw_handler) cfg80211_wext_giwname,
2013	IW_IOCTL(SIOCSIWFREQ) = rndis_iw_set_freq,
2014	IW_IOCTL(SIOCGIWFREQ) = rndis_iw_get_freq,
2015	IW_IOCTL(SIOCSIWMODE) = (iw_handler) cfg80211_wext_siwmode,
2016	IW_IOCTL(SIOCGIWMODE) = (iw_handler) cfg80211_wext_giwmode,
2017	IW_IOCTL(SIOCGIWRANGE) = (iw_handler) cfg80211_wext_giwrange,
2018	IW_IOCTL(SIOCSIWAP) = rndis_iw_set_bssid,
2019	IW_IOCTL(SIOCGIWAP) = rndis_iw_get_bssid,
2020	IW_IOCTL(SIOCSIWSCAN) = (iw_handler) cfg80211_wext_siwscan,
2021	IW_IOCTL(SIOCGIWSCAN) = (iw_handler) cfg80211_wext_giwscan,
2022	IW_IOCTL(SIOCSIWESSID) = rndis_iw_set_essid,
2023	IW_IOCTL(SIOCGIWESSID) = rndis_iw_get_essid,
2024	IW_IOCTL(SIOCGIWRATE) = rndis_iw_get_rate,
2025	IW_IOCTL(SIOCSIWRTS) = rndis_iw_set_rts,
2026	IW_IOCTL(SIOCGIWRTS) = rndis_iw_get_rts,
2027	IW_IOCTL(SIOCSIWFRAG) = rndis_iw_set_frag,
2028	IW_IOCTL(SIOCGIWFRAG) = rndis_iw_get_frag,
2029	IW_IOCTL(SIOCSIWTXPOW) = rndis_iw_set_txpower,
2030	IW_IOCTL(SIOCGIWTXPOW) = rndis_iw_get_txpower,
2031	IW_IOCTL(SIOCSIWENCODE) = rndis_iw_set_encode,
2032	IW_IOCTL(SIOCSIWENCODEEXT) = rndis_iw_set_encode_ext,
2033	IW_IOCTL(SIOCSIWAUTH) = rndis_iw_set_auth,
2034	IW_IOCTL(SIOCGIWAUTH) = rndis_iw_get_auth,
2035	IW_IOCTL(SIOCSIWGENIE) = rndis_iw_set_genie,
2036	IW_IOCTL(SIOCGIWGENIE) = rndis_iw_get_genie,
2037	IW_IOCTL(SIOCSIWMLME) = rndis_iw_set_mlme,
2038	};
2039
2040	static const iw_handler rndis_wlan_private_handler[] = {
2041	};
2042
2043	static const struct iw_priv_args rndis_wlan_private_args[] = {
2044	};
2045
2046
2047	static const struct iw_handler_def rndis_iw_handlers = {
2048	.num_standard = ARRAY_SIZE(rndis_iw_handler),
2049	.num_private = ARRAY_SIZE(rndis_wlan_private_handler),
2050	.num_private_args = ARRAY_SIZE(rndis_wlan_private_args),
2051	.standard = (iw_handler *)rndis_iw_handler,
2052	.private = (iw_handler *)rndis_wlan_private_handler,
2053	.private_args = (struct iw_priv_args *)rndis_wlan_private_args,
2054	.get_wireless_stats = rndis_get_wireless_stats,
2055	};
2056
2057
2058	static void rndis_wlan_worker(struct work_struct *work)
2059	{
2060	struct rndis_wlan_private *priv =
2061	container_of(work, struct rndis_wlan_private, work);
2062	struct usbnet *usbdev = priv->usbdev;
2063	union iwreq_data evt;
2064	unsigned char bssid[ETH_ALEN];
2065	struct ndis_80211_assoc_info *info;
2066	int assoc_size = sizeof(*info) + IW_CUSTOM_MAX + 32;
2067	int ret, offset;
2068
2069	if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending)) {
2070	netif_carrier_on(usbdev->net);
2071
2072	info = kzalloc(assoc_size, GFP_KERNEL);
2073	if (!info)
2074	goto get_bssid;
2075
2076	/* Get association info IEs from device and send them back to
2077	* userspace. */
2078	ret = get_association_info(usbdev, info, assoc_size);
2079	if (!ret) {
2080	evt.data.length = le32_to_cpu(info->req_ie_length);
2081	if (evt.data.length > 0) {
2082	offset = le32_to_cpu(info->offset_req_ies);
2083	wireless_send_event(usbdev->net,
2084	IWEVASSOCREQIE, &evt,
2085	(char *)info + offset);
2086	}
2087
2088	evt.data.length = le32_to_cpu(info->resp_ie_length);
2089	if (evt.data.length > 0) {
2090	offset = le32_to_cpu(info->offset_resp_ies);
2091	wireless_send_event(usbdev->net,
2092	IWEVASSOCRESPIE, &evt,
2093	(char *)info + offset);
2094	}
2095	}
2096
2097	kfree(info);
2098
2099	get_bssid:
2100	ret = get_bssid(usbdev, bssid);
2101	if (!ret) {
2102	evt.data.flags = 0;
2103	evt.data.length = 0;
2104	memcpy(evt.ap_addr.sa_data, bssid, ETH_ALEN);
2105	wireless_send_event(usbdev->net, SIOCGIWAP, &evt, NULL);
2106	}
2107	}
2108
2109	if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending)) {
2110	netif_carrier_off(usbdev->net);
2111
2112	evt.data.flags = 0;
2113	evt.data.length = 0;
2114	memset(evt.ap_addr.sa_data, 0, ETH_ALEN);
2115	wireless_send_event(usbdev->net, SIOCGIWAP, &evt, NULL);
2116	}
2117
2118	if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2119	set_multicast_list(usbdev);
2120	}
2121
2122	static void rndis_wlan_set_multicast_list(struct net_device *dev)
2123	{
2124	struct usbnet *usbdev = netdev_priv(dev);
2125	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2126
2127	if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2128	return;
2129
2130	set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2131	queue_work(priv->workqueue, &priv->work);
2132	}
2133
2134	static void rndis_wlan_link_change(struct usbnet *usbdev, int state)
2135	{
2136	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2137
2138	/* queue work to avoid recursive calls into rndis_command */
2139	set_bit(state ? WORK_LINK_UP : WORK_LINK_DOWN, &priv->work_pending);
2140	queue_work(priv->workqueue, &priv->work);
2141	}
2142
2143
2144	static int rndis_wlan_get_caps(struct usbnet *usbdev)
2145	{
2146	struct {
2147	__le32 num_items;
2148	__le32 items[8];
2149	} networks_supported;
2150	int len, retval, i, n;
2151	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2152
2153	/* determine supported modes */
2154	len = sizeof(networks_supported);
2155	retval = rndis_query_oid(usbdev, OID_802_11_NETWORK_TYPES_SUPPORTED,
2156	&networks_supported, &len);
2157	if (retval >= 0) {
2158	n = le32_to_cpu(networks_supported.num_items);
2159	if (n > 8)
2160	n = 8;
2161	for (i = 0; i < n; i++) {
2162	switch (le32_to_cpu(networks_supported.items[i])) {
2163	case NDIS_80211_TYPE_FREQ_HOP:
2164	case NDIS_80211_TYPE_DIRECT_SEQ:
2165	priv->caps \|= CAP_MODE_80211B;
2166	break;
2167	case NDIS_80211_TYPE_OFDM_A:
2168	priv->caps \|= CAP_MODE_80211A;
2169	break;
2170	case NDIS_80211_TYPE_OFDM_G:
2171	priv->caps \|= CAP_MODE_80211G;
2172	break;
2173	}
2174	}
2175	}
2176
2177	return retval;
2178	}
2179
2180
2181	#define STATS_UPDATE_JIFFIES (HZ)
2182	static void rndis_update_wireless_stats(struct work_struct *work)
2183	{
2184	struct rndis_wlan_private *priv =
2185	container_of(work, struct rndis_wlan_private, stats_work.work);
2186	struct usbnet *usbdev = priv->usbdev;
2187	struct iw_statistics iwstats;
2188	__le32 rssi, tmp;
2189	int len, ret, j;
2190	unsigned long flags;
2191	int update_jiffies = STATS_UPDATE_JIFFIES;
2192	void *buf;
2193
2194	spin_lock_irqsave(&priv->stats_lock, flags);
2195	memcpy(&iwstats, &priv->privstats, sizeof(iwstats));
2196	spin_unlock_irqrestore(&priv->stats_lock, flags);
2197
2198	/* only update stats when connected */
2199	if (!is_associated(usbdev)) {
2200	iwstats.qual.qual = 0;
2201	iwstats.qual.level = 0;
2202	iwstats.qual.updated = IW_QUAL_QUAL_UPDATED
2203	\| IW_QUAL_LEVEL_UPDATED
2204	\| IW_QUAL_NOISE_INVALID
2205	\| IW_QUAL_QUAL_INVALID
2206	\| IW_QUAL_LEVEL_INVALID;
2207	goto end;
2208	}
2209
2210	len = sizeof(rssi);
2211	ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
2212
2213	devdbg(usbdev, "stats: OID_802_11_RSSI -> %d, rssi:%d", ret,
2214	le32_to_cpu(rssi));
2215	if (ret == 0) {
2216	memset(&iwstats.qual, 0, sizeof(iwstats.qual));
2217	iwstats.qual.qual = level_to_qual(le32_to_cpu(rssi));
2218	iwstats.qual.level = level_to_qual(le32_to_cpu(rssi));
2219	iwstats.qual.updated = IW_QUAL_QUAL_UPDATED
2220	\| IW_QUAL_LEVEL_UPDATED
2221	\| IW_QUAL_NOISE_INVALID;
2222	}
2223
2224	memset(&iwstats.discard, 0, sizeof(iwstats.discard));
2225
2226	len = sizeof(tmp);
2227	ret = rndis_query_oid(usbdev, OID_GEN_XMIT_ERROR, &tmp, &len);
2228	if (ret == 0)
2229	iwstats.discard.misc += le32_to_cpu(tmp);
2230
2231	len = sizeof(tmp);
2232	ret = rndis_query_oid(usbdev, OID_GEN_RCV_ERROR, &tmp, &len);
2233	if (ret == 0)
2234	iwstats.discard.misc += le32_to_cpu(tmp);
2235
2236	len = sizeof(tmp);
2237	ret = rndis_query_oid(usbdev, OID_GEN_RCV_NO_BUFFER, &tmp, &len);
2238	if (ret == 0)
2239	iwstats.discard.misc += le32_to_cpu(tmp);
2240
2241	/* Workaround transfer stalls on poor quality links.
2242	* TODO: find right way to fix these stalls (as stalls do not happen
2243	* with ndiswrapper/windows driver). */
2244	if (iwstats.qual.qual <= 25) {
2245	/* Decrease stats worker interval to catch stalls.
2246	* faster. Faster than 400-500ms causes packet loss,
2247	* Slower doesn't catch stalls fast enough.
2248	*/
2249	j = msecs_to_jiffies(priv->param_workaround_interval);
2250	if (j > STATS_UPDATE_JIFFIES)
2251	j = STATS_UPDATE_JIFFIES;
2252	else if (j <= 0)
2253	j = 1;
2254	update_jiffies = j;
2255
2256	/* Send scan OID. Use of both OIDs is required to get device
2257	* working.
2258	*/
2259	tmp = cpu_to_le32(1);
2260	rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
2261	sizeof(tmp));
2262
2263	len = CONTROL_BUFFER_SIZE;
2264	buf = kmalloc(len, GFP_KERNEL);
2265	if (!buf)
2266	goto end;
2267
2268	rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &len);
2269	kfree(buf);
2270	}
2271	end:
2272	spin_lock_irqsave(&priv->stats_lock, flags);
2273	memcpy(&priv->privstats, &iwstats, sizeof(iwstats));
2274	spin_unlock_irqrestore(&priv->stats_lock, flags);
2275
2276	if (update_jiffies >= HZ)
2277	update_jiffies = round_jiffies_relative(update_jiffies);
2278	else {
2279	j = round_jiffies_relative(update_jiffies);
2280	if (abs(j - update_jiffies) <= 10)
2281	update_jiffies = j;
2282	}
2283
2284	queue_delayed_work(priv->workqueue, &priv->stats_work, update_jiffies);
2285	}
2286
2287
2288	static int bcm4320a_early_init(struct usbnet *usbdev)
2289	{
2290	/* bcm4320a doesn't handle configuration parameters well. Try
2291	* set any and you get partially zeroed mac and broken device.
2292	*/
2293
2294	return 0;
2295	}
2296
2297
2298	static int bcm4320b_early_init(struct usbnet *usbdev)
2299	{
2300	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2301	char buf[8];
2302
2303	/* Early initialization settings, setting these won't have effect
2304	* if called after generic_rndis_bind().
2305	*/
2306
2307	priv->param_country[0] = modparam_country[0];
2308	priv->param_country[1] = modparam_country[1];
2309	priv->param_country[2] = 0;
2310	priv->param_frameburst = modparam_frameburst;
2311	priv->param_afterburner = modparam_afterburner;
2312	priv->param_power_save = modparam_power_save;
2313	priv->param_power_output = modparam_power_output;
2314	priv->param_roamtrigger = modparam_roamtrigger;
2315	priv->param_roamdelta = modparam_roamdelta;
2316
2317	priv->param_country[0] = toupper(priv->param_country[0]);
2318	priv->param_country[1] = toupper(priv->param_country[1]);
2319	/* doesn't support EU as country code, use FI instead */
2320	if (!strcmp(priv->param_country, "EU"))
2321	strcpy(priv->param_country, "FI");
2322
2323	if (priv->param_power_save < 0)
2324	priv->param_power_save = 0;
2325	else if (priv->param_power_save > 2)
2326	priv->param_power_save = 2;
2327
2328	if (priv->param_power_output < 0)
2329	priv->param_power_output = 0;
2330	else if (priv->param_power_output > 3)
2331	priv->param_power_output = 3;
2332
2333	if (priv->param_roamtrigger < -80)
2334	priv->param_roamtrigger = -80;
2335	else if (priv->param_roamtrigger > -60)
2336	priv->param_roamtrigger = -60;
2337
2338	if (priv->param_roamdelta < 0)
2339	priv->param_roamdelta = 0;
2340	else if (priv->param_roamdelta > 2)
2341	priv->param_roamdelta = 2;
2342
2343	if (modparam_workaround_interval < 0)
2344	priv->param_workaround_interval = 500;
2345	else
2346	priv->param_workaround_interval = modparam_workaround_interval;
2347
2348	rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
2349	rndis_set_config_parameter_str(usbdev, "FrameBursting",
2350	priv->param_frameburst ? "1" : "0");
2351	rndis_set_config_parameter_str(usbdev, "Afterburner",
2352	priv->param_afterburner ? "1" : "0");
2353	sprintf(buf, "%d", priv->param_power_save);
2354	rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
2355	sprintf(buf, "%d", priv->param_power_output);
2356	rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
2357	sprintf(buf, "%d", priv->param_roamtrigger);
2358	rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
2359	sprintf(buf, "%d", priv->param_roamdelta);
2360	rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
2361
2362	return 0;
2363	}
2364
2365	/* same as rndis_netdev_ops but with local multicast handler */
2366	static const struct net_device_ops rndis_wlan_netdev_ops = {
2367	.ndo_open = usbnet_open,
2368	.ndo_stop = usbnet_stop,
2369	.ndo_start_xmit = usbnet_start_xmit,
2370	.ndo_tx_timeout = usbnet_tx_timeout,
2371	.ndo_set_mac_address = eth_mac_addr,
2372	.ndo_validate_addr = eth_validate_addr,
2373	.ndo_set_multicast_list = rndis_wlan_set_multicast_list,
2374	};
2375
2376
2377	static int rndis_wlan_bind(struct usbnet usbdev, struct usb_interface intf)
2378	{
2379	struct wiphy *wiphy;
2380	struct rndis_wlan_private *priv;
2381	int retval, len;
2382	__le32 tmp;
2383
2384	/* allocate wiphy and rndis private data
2385	* NOTE: We only support a single virtual interface, so wiphy
2386	* and wireless_dev are somewhat synonymous for this device.
2387	*/
2388	wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
2389	if (!wiphy)
2390	return -ENOMEM;
2391
2392	priv = wiphy_priv(wiphy);
2393	usbdev->net->ieee80211_ptr = &priv->wdev;
2394	priv->wdev.wiphy = wiphy;
2395	priv->wdev.iftype = NL80211_IFTYPE_STATION;
2396
2397	/* These have to be initialized before calling generic_rndis_bind().
2398	* Otherwise we'll be in big trouble in rndis_wlan_early_init().
2399	*/
2400	usbdev->driver_priv = priv;
2401	usbdev->net->wireless_handlers = &rndis_iw_handlers;
2402	priv->usbdev = usbdev;
2403
2404	mutex_init(&priv->command_lock);
2405	spin_lock_init(&priv->stats_lock);
2406
2407	/* because rndis_command() sleeps we need to use workqueue */
2408	priv->workqueue = create_singlethread_workqueue("rndis_wlan");
2409	INIT_WORK(&priv->work, rndis_wlan_worker);
2410	INIT_DELAYED_WORK(&priv->stats_work, rndis_update_wireless_stats);
2411	INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
2412
2413	/* try bind rndis_host */
2414	retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
2415	if (retval < 0)
2416	goto fail;
2417
2418	/* generic_rndis_bind set packet filter to multicast_all+
2419	* promisc mode which doesn't work well for our devices (device
2420	* picks up rssi to closest station instead of to access point).
2421	*
2422	* rndis_host wants to avoid all OID as much as possible
2423	* so do promisc/multicast handling in rndis_wlan.
2424	*/
2425	usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
2426
2427	tmp = RNDIS_PACKET_TYPE_DIRECTED \| RNDIS_PACKET_TYPE_BROADCAST;
2428	retval = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &tmp,
2429	sizeof(tmp));
2430
2431	len = sizeof(tmp);
2432	retval = rndis_query_oid(usbdev, OID_802_3_MAXIMUM_LIST_SIZE, &tmp,
2433	&len);
2434	priv->multicast_size = le32_to_cpu(tmp);
2435	if (retval < 0 \|\| priv->multicast_size < 0)
2436	priv->multicast_size = 0;
2437	if (priv->multicast_size > 0)
2438	usbdev->net->flags \|= IFF_MULTICAST;
2439	else
2440	usbdev->net->flags &= ~IFF_MULTICAST;
2441
2442	priv->iwstats.qual.qual = 0;
2443	priv->iwstats.qual.level = 0;
2444	priv->iwstats.qual.updated = IW_QUAL_QUAL_UPDATED
2445	\| IW_QUAL_LEVEL_UPDATED
2446	\| IW_QUAL_NOISE_INVALID
2447	\| IW_QUAL_QUAL_INVALID
2448	\| IW_QUAL_LEVEL_INVALID;
2449
2450	/* fill-out wiphy structure and register w/ cfg80211 */
2451	memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
2452	wiphy->privid = rndis_wiphy_privid;
2453	wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
2454	\| BIT(NL80211_IFTYPE_ADHOC);
2455	wiphy->max_scan_ssids = 1;
2456
2457	/* TODO: fill-out band information based on priv->caps */
2458	rndis_wlan_get_caps(usbdev);
2459
2460	memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
2461	memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
2462	priv->band.channels = priv->channels;
2463	priv->band.n_channels = ARRAY_SIZE(rndis_channels);
2464	priv->band.bitrates = priv->rates;
2465	priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
2466	wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
2467	wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
2468
2469	set_wiphy_dev(wiphy, &usbdev->udev->dev);
2470
2471	if (wiphy_register(wiphy)) {
2472	retval = -ENODEV;
2473	goto fail;
2474	}
2475
2476	set_default_iw_params(usbdev);
2477
2478	/* turn radio on */
2479	priv->radio_on = 1;
2480	disassociate(usbdev, 1);
2481	netif_carrier_off(usbdev->net);
2482
2483	queue_delayed_work(priv->workqueue, &priv->stats_work,
2484	round_jiffies_relative(STATS_UPDATE_JIFFIES));
2485
2486	return 0;
2487
2488	fail:
2489	cancel_delayed_work_sync(&priv->stats_work);
2490	cancel_delayed_work_sync(&priv->scan_work);
2491	cancel_work_sync(&priv->work);
2492	flush_workqueue(priv->workqueue);
2493	destroy_workqueue(priv->workqueue);
2494
2495	wiphy_free(wiphy);
2496	return retval;
2497	}
2498
2499
2500	static void rndis_wlan_unbind(struct usbnet usbdev, struct usb_interface intf)
2501	{
2502	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2503
2504	/* turn radio off */
2505	disassociate(usbdev, 0);
2506
2507	cancel_delayed_work_sync(&priv->stats_work);
2508	cancel_delayed_work_sync(&priv->scan_work);
2509	cancel_work_sync(&priv->work);
2510	flush_workqueue(priv->workqueue);
2511	destroy_workqueue(priv->workqueue);
2512
2513	if (priv && priv->wpa_ie_len)
2514	kfree(priv->wpa_ie);
2515
2516	rndis_unbind(usbdev, intf);
2517
2518	wiphy_unregister(priv->wdev.wiphy);
2519	wiphy_free(priv->wdev.wiphy);
2520	}
2521
2522
2523	static int rndis_wlan_reset(struct usbnet *usbdev)
2524	{
2525	return deauthenticate(usbdev);
2526	}
2527
2528
2529	static const struct driver_info bcm4320b_info = {
2530	.description = "Wireless RNDIS device, BCM4320b based",
2531	.flags = FLAG_WLAN \| FLAG_FRAMING_RN \| FLAG_NO_SETINT,
2532	.bind = rndis_wlan_bind,
2533	.unbind = rndis_wlan_unbind,
2534	.status = rndis_status,
2535	.rx_fixup = rndis_rx_fixup,
2536	.tx_fixup = rndis_tx_fixup,
2537	.reset = rndis_wlan_reset,
2538	.early_init = bcm4320b_early_init,
2539	.link_change = rndis_wlan_link_change,
2540	};
2541
2542	static const struct driver_info bcm4320a_info = {
2543	.description = "Wireless RNDIS device, BCM4320a based",
2544	.flags = FLAG_WLAN \| FLAG_FRAMING_RN \| FLAG_NO_SETINT,
2545	.bind = rndis_wlan_bind,
2546	.unbind = rndis_wlan_unbind,
2547	.status = rndis_status,
2548	.rx_fixup = rndis_rx_fixup,
2549	.tx_fixup = rndis_tx_fixup,
2550	.reset = rndis_wlan_reset,
2551	.early_init = bcm4320a_early_init,
2552	.link_change = rndis_wlan_link_change,
2553	};
2554
2555	static const struct driver_info rndis_wlan_info = {
2556	.description = "Wireless RNDIS device",
2557	.flags = FLAG_WLAN \| FLAG_FRAMING_RN \| FLAG_NO_SETINT,
2558	.bind = rndis_wlan_bind,
2559	.unbind = rndis_wlan_unbind,
2560	.status = rndis_status,
2561	.rx_fixup = rndis_rx_fixup,
2562	.tx_fixup = rndis_tx_fixup,
2563	.reset = rndis_wlan_reset,
2564	.early_init = bcm4320a_early_init,
2565	.link_change = rndis_wlan_link_change,
2566	};
2567
2568	/-------------------------------------------------------------------------/
2569
2570	static const struct usb_device_id products [] = {
2571	#define RNDIS_MASTER_INTERFACE \
2572	.bInterfaceClass = USB_CLASS_COMM, \
2573	.bInterfaceSubClass = 2 /* ACM */, \
2574	.bInterfaceProtocol = 0x0ff
2575
2576	/* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
2577	* parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
2578	*/
2579	{
2580	.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
2581	\| USB_DEVICE_ID_MATCH_DEVICE,
2582	.idVendor = 0x0411,
2583	.idProduct = 0x00bc, /* Buffalo WLI-U2-KG125S */
2584	RNDIS_MASTER_INTERFACE,
2585	.driver_info = (unsigned long) &bcm4320b_info,
2586	}, {
2587	.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
2588	\| USB_DEVICE_ID_MATCH_DEVICE,
2589	.idVendor = 0x0baf,
2590	.idProduct = 0x011b, /* U.S. Robotics USR5421 */
2591	RNDIS_MASTER_INTERFACE,
2592	.driver_info = (unsigned long) &bcm4320b_info,
2593	}, {
2594	.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
2595	\| USB_DEVICE_ID_MATCH_DEVICE,
2596	.idVendor = 0x050d,
2597	.idProduct = 0x011b, /* Belkin F5D7051 */
2598	RNDIS_MASTER_INTERFACE,
2599	.driver_info = (unsigned long) &bcm4320b_info,
2600	}, {
2601	.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
2602	\| USB_DEVICE_ID_MATCH_DEVICE,
2603	.idVendor = 0x1799, /* Belkin has two vendor ids */
2604	.idProduct = 0x011b, /* Belkin F5D7051 */
2605	RNDIS_MASTER_INTERFACE,
2606	.driver_info = (unsigned long) &bcm4320b_info,
2607	}, {
2608	.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
2609	\| USB_DEVICE_ID_MATCH_DEVICE,
2610	.idVendor = 0x13b1,
2611	.idProduct = 0x0014, /* Linksys WUSB54GSv2 */
2612	RNDIS_MASTER_INTERFACE,
2613	.driver_info = (unsigned long) &bcm4320b_info,
2614	}, {
2615	.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
2616	\| USB_DEVICE_ID_MATCH_DEVICE,
2617	.idVendor = 0x13b1,
2618	.idProduct = 0x0026, /* Linksys WUSB54GSC */
2619	RNDIS_MASTER_INTERFACE,
2620	.driver_info = (unsigned long) &bcm4320b_info,
2621	}, {
2622	.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
2623	\| USB_DEVICE_ID_MATCH_DEVICE,
2624	.idVendor = 0x0b05,
2625	.idProduct = 0x1717, /* Asus WL169gE */
2626	RNDIS_MASTER_INTERFACE,
2627	.driver_info = (unsigned long) &bcm4320b_info,
2628	}, {
2629	.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
2630	\| USB_DEVICE_ID_MATCH_DEVICE,
2631	.idVendor = 0x0a5c,
2632	.idProduct = 0xd11b, /* Eminent EM4045 */
2633	RNDIS_MASTER_INTERFACE,
2634	.driver_info = (unsigned long) &bcm4320b_info,
2635	}, {
2636	.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
2637	\| USB_DEVICE_ID_MATCH_DEVICE,
2638	.idVendor = 0x1690,
2639	.idProduct = 0x0715, /* BT Voyager 1055 */
2640	RNDIS_MASTER_INTERFACE,
2641	.driver_info = (unsigned long) &bcm4320b_info,
2642	},
2643	/* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
2644	* parameters available, hardware probably contain older firmware version with
2645	* no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
2646	*/
2647	{
2648	.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
2649	\| USB_DEVICE_ID_MATCH_DEVICE,
2650	.idVendor = 0x13b1,
2651	.idProduct = 0x000e, /* Linksys WUSB54GSv1 */
2652	RNDIS_MASTER_INTERFACE,
2653	.driver_info = (unsigned long) &bcm4320a_info,
2654	}, {
2655	.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
2656	\| USB_DEVICE_ID_MATCH_DEVICE,
2657	.idVendor = 0x0baf,
2658	.idProduct = 0x0111, /* U.S. Robotics USR5420 */
2659	RNDIS_MASTER_INTERFACE,
2660	.driver_info = (unsigned long) &bcm4320a_info,
2661	}, {
2662	.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
2663	\| USB_DEVICE_ID_MATCH_DEVICE,
2664	.idVendor = 0x0411,
2665	.idProduct = 0x004b, /* BUFFALO WLI-USB-G54 */
2666	RNDIS_MASTER_INTERFACE,
2667	.driver_info = (unsigned long) &bcm4320a_info,
2668	},
2669	/* Generic Wireless RNDIS devices that we don't have exact
2670	* idVendor/idProduct/chip yet.
2671	*/
2672	{
2673	/* RNDIS is MSFT's un-official variant of CDC ACM */
2674	USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
2675	.driver_info = (unsigned long) &rndis_wlan_info,
2676	}, {
2677	/* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
2678	USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
2679	.driver_info = (unsigned long) &rndis_wlan_info,
2680	},
2681	{ }, // END
2682	};
2683	MODULE_DEVICE_TABLE(usb, products);
2684
2685	static struct usb_driver rndis_wlan_driver = {
2686	.name = "rndis_wlan",
2687	.id_table = products,
2688	.probe = usbnet_probe,
2689	.disconnect = usbnet_disconnect,
2690	.suspend = usbnet_suspend,
2691	.resume = usbnet_resume,
2692	};
2693
2694	static int __init rndis_wlan_init(void)
2695	{
2696	return usb_register(&rndis_wlan_driver);
2697	}
2698	module_init(rndis_wlan_init);
2699
2700	static void __exit rndis_wlan_exit(void)
2701	{
2702	usb_deregister(&rndis_wlan_driver);
2703	}
2704	module_exit(rndis_wlan_exit);
2705
2706	MODULE_AUTHOR("Bjorge Dijkstra");
2707	MODULE_AUTHOR("Jussi Kivilinna");
2708	MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
2709	MODULE_LICENSE("GPL");
2710
2711

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