summaryrefslogtreecommitdiffstats
path: root/include/linux/usb/rndis_host.h
blob: edc1d4a0e272459a8c411c80c9d4855ec4a0163a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
/*
 * Host Side support for RNDIS Networking Links
 * Copyright (C) 2005 by David Brownell
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */


#ifndef	__RNDIS_HOST_H
#define	__RNDIS_HOST_H


/*
 * CONTROL uses CDC "encapsulated commands" with funky notifications.
 *  - control-out:  SEND_ENCAPSULATED
 *  - interrupt-in:  RESPONSE_AVAILABLE
 *  - control-in:  GET_ENCAPSULATED
 *
 * We'll try to ignore the RESPONSE_AVAILABLE notifications.
 *
 * REVISIT some RNDIS implementations seem to have curious issues still
 * to be resolved.
 */
struct rndis_msg_hdr {
	__le32	msg_type;			/* RNDIS_MSG_* */
	__le32	msg_len;
	// followed by data that varies between messages
	__le32	request_id;
	__le32	status;
	// ... and more
} __attribute__ ((packed));

/* MS-Windows uses this strange size, but RNDIS spec says 1024 minimum */
#define	CONTROL_BUFFER_SIZE		1025

/* RNDIS defines an (absurdly huge) 10 second control timeout,
 * but ActiveSync seems to use a more usual 5 second timeout
 * (which matches the USB 2.0 spec).
 */
#define	RNDIS_CONTROL_TIMEOUT_MS	(5 * 1000)


#define ccpu2 __constant_cpu_to_le32

#define RNDIS_MSG_COMPLETION	ccpu2(0x80000000)

/* codes for "msg_type" field of rndis messages;
 * only the data channel uses packet messages (maybe batched);
 * everything else goes on the control channel.
 */
#define RNDIS_MSG_PACKET	ccpu2(0x00000001)	/* 1-N packets */
#define RNDIS_MSG_INIT		ccpu2(0x00000002)
#define RNDIS_MSG_INIT_C	(RNDIS_MSG_INIT|RNDIS_MSG_COMPLETION)
#define RNDIS_MSG_HALT		ccpu2(0x00000003)
#define RNDIS_MSG_QUERY		ccpu2(0x00000004)
#define RNDIS_MSG_QUERY_C	(RNDIS_MSG_QUERY|RNDIS_MSG_COMPLETION)
#define RNDIS_MSG_SET		ccpu2(0x00000005)
#define RNDIS_MSG_SET_C		(RNDIS_MSG_SET|RNDIS_MSG_COMPLETION)
#define RNDIS_MSG_RESET		ccpu2(0x00000006)
#define RNDIS_MSG_RESET_C	(RNDIS_MSG_RESET|RNDIS_MSG_COMPLETION)
#define RNDIS_MSG_INDICATE	ccpu2(0x00000007)
#define RNDIS_MSG_KEEPALIVE	ccpu2(0x00000008)
#define RNDIS_MSG_KEEPALIVE_C	(RNDIS_MSG_KEEPALIVE|RNDIS_MSG_COMPLETION)

/* codes for "status" field of completion messages */
#define	RNDIS_STATUS_SUCCESS		ccpu2(0x00000000)
#define	RNDIS_STATUS_FAILURE		ccpu2(0xc0000001)
#define	RNDIS_STATUS_INVALID_DATA	ccpu2(0xc0010015)
#define	RNDIS_STATUS_NOT_SUPPORTED	ccpu2(0xc00000bb)
#define	RNDIS_STATUS_MEDIA_CONNECT	ccpu2(0x4001000b)
#define	RNDIS_STATUS_MEDIA_DISCONNECT	ccpu2(0x4001000c)

/* codes for OID_GEN_PHYSICAL_MEDIUM */
#define	RNDIS_PHYSICAL_MEDIUM_UNSPECIFIED	ccpu2(0x00000000)
#define	RNDIS_PHYSICAL_MEDIUM_WIRELESS_LAN	ccpu2(0x00000001)
#define	RNDIS_PHYSICAL_MEDIUM_CABLE_MODEM	ccpu2(0x00000002)
#define	RNDIS_PHYSICAL_MEDIUM_PHONE_LINE	ccpu2(0x00000003)
#define	RNDIS_PHYSICAL_MEDIUM_POWER_LINE	ccpu2(0x00000004)
#define	RNDIS_PHYSICAL_MEDIUM_DSL		ccpu2(0x00000005)
#define	RNDIS_PHYSICAL_MEDIUM_FIBRE_CHANNEL	ccpu2(0x00000006)
#define	RNDIS_PHYSICAL_MEDIUM_1394		ccpu2(0x00000007)
#define	RNDIS_PHYSICAL_MEDIUM_WIRELESS_WAN	ccpu2(0x00000008)
#define	RNDIS_PHYSICAL_MEDIUM_MAX		ccpu2(0x00000009)

struct rndis_data_hdr {
	__le32	msg_type;		/* RNDIS_MSG_PACKET */
	__le32	msg_len;		// rndis_data_hdr + data_len + pad
	__le32	data_offset;		// 36 -- right after header
	__le32	data_len;		// ... real packet size

	__le32	oob_data_offset;	// zero
	__le32	oob_data_len;		// zero
	__le32	num_oob;		// zero
	__le32	packet_data_offset;	// zero

	__le32	packet_data_len;	// zero
	__le32	vc_handle;		// zero
	__le32	reserved;		// zero
} __attribute__ ((packed));

struct rndis_init {		/* OUT */
	// header and:
	__le32	msg_type;			/* RNDIS_MSG_INIT */
	__le32	msg_len;			// 24
	__le32	request_id;
	__le32	major_version;			// of rndis (1.0)
	__le32	minor_version;
	__le32	max_transfer_size;
} __attribute__ ((packed));

struct rndis_init_c {		/* IN */
	// header and:
	__le32	msg_type;			/* RNDIS_MSG_INIT_C */
	__le32	msg_len;
	__le32	request_id;
	__le32	status;
	__le32	major_version;			// of rndis (1.0)
	__le32	minor_version;
	__le32	device_flags;
	__le32	medium;				// zero == 802.3
	__le32	max_packets_per_message;
	__le32	max_transfer_size;
	__le32	packet_alignment;		// max 7; (1<<n) bytes
	__le32	af_list_offset;			// zero
	__le32	af_list_size;			// zero
} __attribute__ ((packed));

struct rndis_halt {		/* OUT (no reply) */
	// header and:
	__le32	msg_type;			/* RNDIS_MSG_HALT */
	__le32	msg_len;
	__le32	request_id;
} __attribute__ ((packed));

struct rndis_query {		/* OUT */
	// header and:
	__le32	msg_type;			/* RNDIS_MSG_QUERY */
	__le32	msg_len;
	__le32	request_id;
	__le32	oid;
	__le32	len;
	__le32	offset;
/*?*/	__le32	handle;				// zero
} __attribute__ ((packed));

struct rndis_query_c {		/* IN */
	// header and:
	__le32	msg_type;			/* RNDIS_MSG_QUERY_C */
	__le32	msg_len;
	__le32	request_id;
	__le32	status;
	__le32	len;
	__le32	offset;
} __attribute__ ((packed));

struct rndis_set {		/* OUT */
	// header and:
	__le32	msg_type;			/* RNDIS_MSG_SET */
	__le32	msg_len;
	__le32	request_id;
	__le32	oid;
	__le32	len;
	__le32	offset;
/*?*/	__le32	handle;				// zero
} __attribute__ ((packed));

struct rndis_set_c {		/* IN */
	// header and:
	__le32	msg_type;			/* RNDIS_MSG_SET_C */
	__le32	msg_len;
	__le32	request_id;
	__le32	status;
} __attribute__ ((packed));

struct rndis_reset {		/* IN */
	// header and:
	__le32	msg_type;			/* RNDIS_MSG_RESET */
	__le32	msg_len;
	__le32	reserved;
} __attribute__ ((packed));

struct rndis_reset_c {		/* OUT */
	// header and:
	__le32	msg_type;			/* RNDIS_MSG_RESET_C */
	__le32	msg_len;
	__le32	status;
	__le32	addressing_lost;
} __attribute__ ((packed));

struct rndis_indicate {		/* IN (unrequested) */
	// header and:
	__le32	msg_type;			/* RNDIS_MSG_INDICATE */
	__le32	msg_len;
	__le32	status;
	__le32	length;
	__le32	offset;
/**/	__le32	diag_status;
	__le32	error_offset;
/**/	__le32	message;
} __attribute__ ((packed));

struct rndis_keepalive {	/* OUT (optionally IN) */
	// header and:
	__le32	msg_type;			/* RNDIS_MSG_KEEPALIVE */
	__le32	msg_len;
	__le32	request_id;
} __attribute__ ((packed));

struct rndis_keepalive_c {	/* IN (optionally OUT) */
	// header and:
	__le32	msg_type;			/* RNDIS_MSG_KEEPALIVE_C */
	__le32	msg_len;
	__le32	request_id;
	__le32	status;
} __attribute__ ((packed));

/* NOTE:  about 30 OIDs are "mandatory" for peripherals to support ... and
 * there are gobs more that may optionally be supported.  We'll avoid as much
 * of that mess as possible.
 */
#define OID_802_3_PERMANENT_ADDRESS	ccpu2(0x01010101)
#define OID_GEN_MAXIMUM_FRAME_SIZE	ccpu2(0x00010106)
#define OID_GEN_CURRENT_PACKET_FILTER	ccpu2(0x0001010e)
#define OID_GEN_PHYSICAL_MEDIUM		ccpu2(0x00010202)

/* packet filter bits used by OID_GEN_CURRENT_PACKET_FILTER */
#define RNDIS_PACKET_TYPE_DIRECTED		ccpu2(0x00000001)
#define RNDIS_PACKET_TYPE_MULTICAST		ccpu2(0x00000002)
#define RNDIS_PACKET_TYPE_ALL_MULTICAST		ccpu2(0x00000004)
#define RNDIS_PACKET_TYPE_BROADCAST		ccpu2(0x00000008)
#define RNDIS_PACKET_TYPE_SOURCE_ROUTING	ccpu2(0x00000010)
#define RNDIS_PACKET_TYPE_PROMISCUOUS		ccpu2(0x00000020)
#define RNDIS_PACKET_TYPE_SMT			ccpu2(0x00000040)
#define RNDIS_PACKET_TYPE_ALL_LOCAL		ccpu2(0x00000080)
#define RNDIS_PACKET_TYPE_GROUP			ccpu2(0x00001000)
#define RNDIS_PACKET_TYPE_ALL_FUNCTIONAL	ccpu2(0x00002000)
#define RNDIS_PACKET_TYPE_FUNCTIONAL		ccpu2(0x00004000)
#define RNDIS_PACKET_TYPE_MAC_FRAME		ccpu2(0x00008000)

/* default filter used with RNDIS devices */
#define RNDIS_DEFAULT_FILTER ( \
	RNDIS_PACKET_TYPE_DIRECTED | \
	RNDIS_PACKET_TYPE_BROADCAST | \
	RNDIS_PACKET_TYPE_ALL_MULTICAST | \
	RNDIS_PACKET_TYPE_PROMISCUOUS)

/* Flags to require specific physical medium type for generic_rndis_bind() */
#define FLAG_RNDIS_PHYM_NOT_WIRELESS	0x0001
#define FLAG_RNDIS_PHYM_WIRELESS	0x0002


extern void rndis_status(struct usbnet *dev, struct urb *urb);
extern int rndis_command(struct usbnet *dev, struct rndis_msg_hdr *buf);
extern int
generic_rndis_bind(struct usbnet *dev, struct usb_interface *intf, int flags);
extern void rndis_unbind(struct usbnet *dev, struct usb_interface *intf);
extern int rndis_rx_fixup(struct usbnet *dev, struct sk_buff *skb);
extern struct sk_buff *
rndis_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags);

#endif	/* __RNDIS_HOST_H */