summaryrefslogtreecommitdiff
path: root/include/linux/usb/rndis_host.h
blob: cc42db51bbbabfb8ad352b1eceb8d053785b80e2 (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
// SPDX-License-Identifier: GPL-2.0+
/*
 * 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	__LINUX_USB_RNDIS_HOST_H
#define	__LINUX_USB_RNDIS_HOST_H

#include <linux/rndis.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)

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));

/* 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

/* Flags for driver_info::data */
#define RNDIS_DRIVER_DATA_POLL_STATUS	1	/* poll status before control */
#define RNDIS_DRIVER_DATA_DST_MAC_FIXUP	2	/* device ignores configured MAC address */

extern void rndis_status(struct usbnet *dev, struct urb *urb);
extern int
rndis_command(struct usbnet *dev, struct rndis_msg_hdr *buf, int buflen);
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	/* __LINUX_USB_RNDIS_HOST_H */