include/linux/usb/rndis_host.h

   1 /*
   2  * Host Side support for RNDIS Networking Links
   3  * Copyright (C) 2005 by David Brownell
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  */
  19
  20 #ifndef __LINUX_USB_RNDIS_HOST_H
  21 #define __LINUX_USB_RNDIS_HOST_H
  22
  23 /*
  24  * CONTROL uses CDC "encapsulated commands" with funky notifications.
  25  *  - control-out:  SEND_ENCAPSULATED
  26  *  - interrupt-in:  RESPONSE_AVAILABLE
  27  *  - control-in:  GET_ENCAPSULATED
  28  *
  29  * We'll try to ignore the RESPONSE_AVAILABLE notifications.
  30  *
  31  * REVISIT some RNDIS implementations seem to have curious issues still
  32  * to be resolved.
  33  */
  34 struct rndis_msg_hdr {
  35         __le32  msg_type;                       /* RNDIS_MSG_* */
  36         __le32  msg_len;
  37         // followed by data that varies between messages
  38         __le32  request_id;
  39         __le32  status;
  40         // ... and more
  41 } __attribute__ ((packed));
  42
  43 /* MS-Windows uses this strange size, but RNDIS spec says 1024 minimum */
  44 #define CONTROL_BUFFER_SIZE             1025
  45
  46 /* RNDIS defines an (absurdly huge) 10 second control timeout,
  47  * but ActiveSync seems to use a more usual 5 second timeout
  48  * (which matches the USB 2.0 spec).
  49  */
  50 #define RNDIS_CONTROL_TIMEOUT_MS        (5 * 1000)
  51
  52
  53 #define ccpu2 __constant_cpu_to_le32
  54
  55 #define RNDIS_MSG_COMPLETION    ccpu2(0x80000000)
  56
  57 /* codes for "msg_type" field of rndis messages;
  58  * only the data channel uses packet messages (maybe batched);
  59  * everything else goes on the control channel.
  60  */
  61 #define RNDIS_MSG_PACKET        ccpu2(0x00000001)       /* 1-N packets */
  62 #define RNDIS_MSG_INIT          ccpu2(0x00000002)
  63 #define RNDIS_MSG_INIT_C        (RNDIS_MSG_INIT|RNDIS_MSG_COMPLETION)
  64 #define RNDIS_MSG_HALT          ccpu2(0x00000003)
  65 #define RNDIS_MSG_QUERY         ccpu2(0x00000004)
  66 #define RNDIS_MSG_QUERY_C       (RNDIS_MSG_QUERY|RNDIS_MSG_COMPLETION)
  67 #define RNDIS_MSG_SET           ccpu2(0x00000005)
  68 #define RNDIS_MSG_SET_C         (RNDIS_MSG_SET|RNDIS_MSG_COMPLETION)
  69 #define RNDIS_MSG_RESET         ccpu2(0x00000006)
  70 #define RNDIS_MSG_RESET_C       (RNDIS_MSG_RESET|RNDIS_MSG_COMPLETION)
  71 #define RNDIS_MSG_INDICATE      ccpu2(0x00000007)
  72 #define RNDIS_MSG_KEEPALIVE     ccpu2(0x00000008)
  73 #define RNDIS_MSG_KEEPALIVE_C   (RNDIS_MSG_KEEPALIVE|RNDIS_MSG_COMPLETION)
  74
  75 /* codes for "status" field of completion messages */
  76 #define RNDIS_STATUS_SUCCESS            ccpu2(0x00000000)
  77 #define RNDIS_STATUS_FAILURE            ccpu2(0xc0000001)
  78 #define RNDIS_STATUS_INVALID_DATA       ccpu2(0xc0010015)
  79 #define RNDIS_STATUS_NOT_SUPPORTED      ccpu2(0xc00000bb)
  80 #define RNDIS_STATUS_MEDIA_CONNECT      ccpu2(0x4001000b)
  81 #define RNDIS_STATUS_MEDIA_DISCONNECT   ccpu2(0x4001000c)
  82
  83 /* codes for OID_GEN_PHYSICAL_MEDIUM */
  84 #define RNDIS_PHYSICAL_MEDIUM_UNSPECIFIED       ccpu2(0x00000000)
  85 #define RNDIS_PHYSICAL_MEDIUM_WIRELESS_LAN      ccpu2(0x00000001)
  86 #define RNDIS_PHYSICAL_MEDIUM_CABLE_MODEM       ccpu2(0x00000002)
  87 #define RNDIS_PHYSICAL_MEDIUM_PHONE_LINE        ccpu2(0x00000003)
  88 #define RNDIS_PHYSICAL_MEDIUM_POWER_LINE        ccpu2(0x00000004)
  89 #define RNDIS_PHYSICAL_MEDIUM_DSL               ccpu2(0x00000005)
  90 #define RNDIS_PHYSICAL_MEDIUM_FIBRE_CHANNEL     ccpu2(0x00000006)
  91 #define RNDIS_PHYSICAL_MEDIUM_1394              ccpu2(0x00000007)
  92 #define RNDIS_PHYSICAL_MEDIUM_WIRELESS_WAN      ccpu2(0x00000008)
  93 #define RNDIS_PHYSICAL_MEDIUM_MAX               ccpu2(0x00000009)
  94
  95 struct rndis_data_hdr {
  96         __le32  msg_type;               /* RNDIS_MSG_PACKET */
  97         __le32  msg_len;                // rndis_data_hdr + data_len + pad
  98         __le32  data_offset;            // 36 -- right after header
  99         __le32  data_len;               // ... real packet size
 100
 101         __le32  oob_data_offset;        // zero
 102         __le32  oob_data_len;           // zero
 103         __le32  num_oob;                // zero
 104         __le32  packet_data_offset;     // zero
 105
 106         __le32  packet_data_len;        // zero
 107         __le32  vc_handle;              // zero
 108         __le32  reserved;               // zero
 109 } __attribute__ ((packed));
 110
 111 struct rndis_init {             /* OUT */
 112         // header and:
 113         __le32  msg_type;                       /* RNDIS_MSG_INIT */
 114         __le32  msg_len;                        // 24
 115         __le32  request_id;
 116         __le32  major_version;                  // of rndis (1.0)
 117         __le32  minor_version;
 118         __le32  max_transfer_size;
 119 } __attribute__ ((packed));
 120
 121 struct rndis_init_c {           /* IN */
 122         // header and:
 123         __le32  msg_type;                       /* RNDIS_MSG_INIT_C */
 124         __le32  msg_len;
 125         __le32  request_id;
 126         __le32  status;
 127         __le32  major_version;                  // of rndis (1.0)
 128         __le32  minor_version;
 129         __le32  device_flags;
 130         __le32  medium;                         // zero == 802.3
 131         __le32  max_packets_per_message;
 132         __le32  max_transfer_size;
 133         __le32  packet_alignment;               // max 7; (1<<n) bytes
 134         __le32  af_list_offset;                 // zero
 135         __le32  af_list_size;                   // zero
 136 } __attribute__ ((packed));
 137
 138 struct rndis_halt {             /* OUT (no reply) */
 139         // header and:
 140         __le32  msg_type;                       /* RNDIS_MSG_HALT */
 141         __le32  msg_len;
 142         __le32  request_id;
 143 } __attribute__ ((packed));
 144
 145 struct rndis_query {            /* OUT */
 146         // header and:
 147         __le32  msg_type;                       /* RNDIS_MSG_QUERY */
 148         __le32  msg_len;
 149         __le32  request_id;
 150         __le32  oid;
 151         __le32  len;
 152         __le32  offset;
 153 /*?*/   __le32  handle;                         // zero
 154 } __attribute__ ((packed));
 155
 156 struct rndis_query_c {          /* IN */
 157         // header and:
 158         __le32  msg_type;                       /* RNDIS_MSG_QUERY_C */
 159         __le32  msg_len;
 160         __le32  request_id;
 161         __le32  status;
 162         __le32  len;
 163         __le32  offset;
 164 } __attribute__ ((packed));
 165
 166 struct rndis_set {              /* OUT */
 167         // header and:
 168         __le32  msg_type;                       /* RNDIS_MSG_SET */
 169         __le32  msg_len;
 170         __le32  request_id;
 171         __le32  oid;
 172         __le32  len;
 173         __le32  offset;
 174 /*?*/   __le32  handle;                         // zero
 175 } __attribute__ ((packed));
 176
 177 struct rndis_set_c {            /* IN */
 178         // header and:
 179         __le32  msg_type;                       /* RNDIS_MSG_SET_C */
 180         __le32  msg_len;
 181         __le32  request_id;
 182         __le32  status;
 183 } __attribute__ ((packed));
 184
 185 struct rndis_reset {            /* IN */
 186         // header and:
 187         __le32  msg_type;                       /* RNDIS_MSG_RESET */
 188         __le32  msg_len;
 189         __le32  reserved;
 190 } __attribute__ ((packed));
 191
 192 struct rndis_reset_c {          /* OUT */
 193         // header and:
 194         __le32  msg_type;                       /* RNDIS_MSG_RESET_C */
 195         __le32  msg_len;
 196         __le32  status;
 197         __le32  addressing_lost;
 198 } __attribute__ ((packed));
 199
 200 struct rndis_indicate {         /* IN (unrequested) */
 201         // header and:
 202         __le32  msg_type;                       /* RNDIS_MSG_INDICATE */
 203         __le32  msg_len;
 204         __le32  status;
 205         __le32  length;
 206         __le32  offset;
 207 /**/    __le32  diag_status;
 208         __le32  error_offset;
 209 /**/    __le32  message;
 210 } __attribute__ ((packed));
 211
 212 struct rndis_keepalive {        /* OUT (optionally IN) */
 213         // header and:
 214         __le32  msg_type;                       /* RNDIS_MSG_KEEPALIVE */
 215         __le32  msg_len;
 216         __le32  request_id;
 217 } __attribute__ ((packed));
 218
 219 struct rndis_keepalive_c {      /* IN (optionally OUT) */
 220         // header and:
 221         __le32  msg_type;                       /* RNDIS_MSG_KEEPALIVE_C */
 222         __le32  msg_len;
 223         __le32  request_id;
 224         __le32  status;
 225 } __attribute__ ((packed));
 226
 227 /* NOTE:  about 30 OIDs are "mandatory" for peripherals to support ... and
 228  * there are gobs more that may optionally be supported.  We'll avoid as much
 229  * of that mess as possible.
 230  */
 231 #define OID_802_3_PERMANENT_ADDRESS     ccpu2(0x01010101)
 232 #define OID_GEN_MAXIMUM_FRAME_SIZE      ccpu2(0x00010106)
 233 #define OID_GEN_CURRENT_PACKET_FILTER   ccpu2(0x0001010e)
 234 #define OID_GEN_PHYSICAL_MEDIUM         ccpu2(0x00010202)
 235
 236 /* packet filter bits used by OID_GEN_CURRENT_PACKET_FILTER */
 237 #define RNDIS_PACKET_TYPE_DIRECTED              ccpu2(0x00000001)
 238 #define RNDIS_PACKET_TYPE_MULTICAST             ccpu2(0x00000002)
 239 #define RNDIS_PACKET_TYPE_ALL_MULTICAST         ccpu2(0x00000004)
 240 #define RNDIS_PACKET_TYPE_BROADCAST             ccpu2(0x00000008)
 241 #define RNDIS_PACKET_TYPE_SOURCE_ROUTING        ccpu2(0x00000010)
 242 #define RNDIS_PACKET_TYPE_PROMISCUOUS           ccpu2(0x00000020)
 243 #define RNDIS_PACKET_TYPE_SMT                   ccpu2(0x00000040)
 244 #define RNDIS_PACKET_TYPE_ALL_LOCAL             ccpu2(0x00000080)
 245 #define RNDIS_PACKET_TYPE_GROUP                 ccpu2(0x00001000)
 246 #define RNDIS_PACKET_TYPE_ALL_FUNCTIONAL        ccpu2(0x00002000)
 247 #define RNDIS_PACKET_TYPE_FUNCTIONAL            ccpu2(0x00004000)
 248 #define RNDIS_PACKET_TYPE_MAC_FRAME             ccpu2(0x00008000)
 249
 250 /* default filter used with RNDIS devices */
 251 #define RNDIS_DEFAULT_FILTER ( \
 252         RNDIS_PACKET_TYPE_DIRECTED | \
 253         RNDIS_PACKET_TYPE_BROADCAST | \
 254         RNDIS_PACKET_TYPE_ALL_MULTICAST | \
 255         RNDIS_PACKET_TYPE_PROMISCUOUS)
 256
 257 /* Flags to require specific physical medium type for generic_rndis_bind() */
 258 #define FLAG_RNDIS_PHYM_NOT_WIRELESS    0x0001
 259 #define FLAG_RNDIS_PHYM_WIRELESS        0x0002
 260
 261
 262 extern void rndis_status(struct usbnet *dev, struct urb *urb);
 263 extern int
 264 rndis_command(struct usbnet *dev, struct rndis_msg_hdr *buf, int buflen);
 265 extern int
 266 generic_rndis_bind(struct usbnet *dev, struct usb_interface *intf, int flags);
 267 extern void rndis_unbind(struct usbnet *dev, struct usb_interface *intf);
 268 extern int rndis_rx_fixup(struct usbnet *dev, struct sk_buff *skb);
 269 extern struct sk_buff *
 270 rndis_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags);
 271
 272 #endif  /* __LINUX_USB_RNDIS_HOST_H */