Sebastian Andrzej Siewior | e220ff7 | 2012-09-06 20:11:06 +0200 | [diff] [blame] | 1 | /* |
| 2 | * RNDIS MSG parser |
| 3 | * |
| 4 | * Authors: Benedikt Spranger, Pengutronix |
| 5 | * Robert Schwebel, Pengutronix |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License |
| 9 | * version 2, as published by the Free Software Foundation. |
| 10 | * |
| 11 | * This software was originally developed in conformance with |
| 12 | * Microsoft's Remote NDIS Specification License Agreement. |
| 13 | * |
| 14 | * 03/12/2004 Kai-Uwe Bloem <linux-development@auerswald.de> |
| 15 | * Fixed message length bug in init_response |
| 16 | * |
| 17 | * 03/25/2004 Kai-Uwe Bloem <linux-development@auerswald.de> |
| 18 | * Fixed rndis_rm_hdr length bug. |
| 19 | * |
| 20 | * Copyright (C) 2004 by David Brownell |
| 21 | * updates to merge with Linux 2.6, better match RNDIS spec |
| 22 | */ |
| 23 | |
| 24 | #include <linux/module.h> |
| 25 | #include <linux/moduleparam.h> |
| 26 | #include <linux/kernel.h> |
| 27 | #include <linux/errno.h> |
| 28 | #include <linux/init.h> |
| 29 | #include <linux/list.h> |
| 30 | #include <linux/proc_fs.h> |
| 31 | #include <linux/slab.h> |
| 32 | #include <linux/seq_file.h> |
| 33 | #include <linux/netdevice.h> |
| 34 | |
| 35 | #include <asm/io.h> |
| 36 | #include <asm/byteorder.h> |
| 37 | #include <asm/unaligned.h> |
| 38 | |
| 39 | |
| 40 | #undef VERBOSE_DEBUG |
| 41 | |
| 42 | #include "rndis.h" |
| 43 | |
| 44 | |
| 45 | /* The driver for your USB chip needs to support ep0 OUT to work with |
| 46 | * RNDIS, plus all three CDC Ethernet endpoints (interrupt not optional). |
| 47 | * |
| 48 | * Windows hosts need an INF file like Documentation/usb/linux.inf |
| 49 | * and will be happier if you provide the host_addr module parameter. |
| 50 | */ |
| 51 | |
| 52 | #if 0 |
| 53 | static int rndis_debug = 0; |
| 54 | module_param (rndis_debug, int, 0); |
| 55 | MODULE_PARM_DESC (rndis_debug, "enable debugging"); |
| 56 | #else |
| 57 | #define rndis_debug 0 |
| 58 | #endif |
| 59 | |
| 60 | #define RNDIS_MAX_CONFIGS 1 |
| 61 | |
| 62 | |
| 63 | static rndis_params rndis_per_dev_params[RNDIS_MAX_CONFIGS]; |
| 64 | |
| 65 | /* Driver Version */ |
| 66 | static const __le32 rndis_driver_version = cpu_to_le32(1); |
| 67 | |
| 68 | /* Function Prototypes */ |
| 69 | static rndis_resp_t *rndis_add_response(int configNr, u32 length); |
| 70 | |
| 71 | |
| 72 | /* supported OIDs */ |
| 73 | static const u32 oid_supported_list[] = |
| 74 | { |
| 75 | /* the general stuff */ |
| 76 | RNDIS_OID_GEN_SUPPORTED_LIST, |
| 77 | RNDIS_OID_GEN_HARDWARE_STATUS, |
| 78 | RNDIS_OID_GEN_MEDIA_SUPPORTED, |
| 79 | RNDIS_OID_GEN_MEDIA_IN_USE, |
| 80 | RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE, |
| 81 | RNDIS_OID_GEN_LINK_SPEED, |
| 82 | RNDIS_OID_GEN_TRANSMIT_BLOCK_SIZE, |
| 83 | RNDIS_OID_GEN_RECEIVE_BLOCK_SIZE, |
| 84 | RNDIS_OID_GEN_VENDOR_ID, |
| 85 | RNDIS_OID_GEN_VENDOR_DESCRIPTION, |
| 86 | RNDIS_OID_GEN_VENDOR_DRIVER_VERSION, |
| 87 | RNDIS_OID_GEN_CURRENT_PACKET_FILTER, |
| 88 | RNDIS_OID_GEN_MAXIMUM_TOTAL_SIZE, |
| 89 | RNDIS_OID_GEN_MEDIA_CONNECT_STATUS, |
| 90 | RNDIS_OID_GEN_PHYSICAL_MEDIUM, |
| 91 | |
| 92 | /* the statistical stuff */ |
| 93 | RNDIS_OID_GEN_XMIT_OK, |
| 94 | RNDIS_OID_GEN_RCV_OK, |
| 95 | RNDIS_OID_GEN_XMIT_ERROR, |
| 96 | RNDIS_OID_GEN_RCV_ERROR, |
| 97 | RNDIS_OID_GEN_RCV_NO_BUFFER, |
| 98 | #ifdef RNDIS_OPTIONAL_STATS |
| 99 | RNDIS_OID_GEN_DIRECTED_BYTES_XMIT, |
| 100 | RNDIS_OID_GEN_DIRECTED_FRAMES_XMIT, |
| 101 | RNDIS_OID_GEN_MULTICAST_BYTES_XMIT, |
| 102 | RNDIS_OID_GEN_MULTICAST_FRAMES_XMIT, |
| 103 | RNDIS_OID_GEN_BROADCAST_BYTES_XMIT, |
| 104 | RNDIS_OID_GEN_BROADCAST_FRAMES_XMIT, |
| 105 | RNDIS_OID_GEN_DIRECTED_BYTES_RCV, |
| 106 | RNDIS_OID_GEN_DIRECTED_FRAMES_RCV, |
| 107 | RNDIS_OID_GEN_MULTICAST_BYTES_RCV, |
| 108 | RNDIS_OID_GEN_MULTICAST_FRAMES_RCV, |
| 109 | RNDIS_OID_GEN_BROADCAST_BYTES_RCV, |
| 110 | RNDIS_OID_GEN_BROADCAST_FRAMES_RCV, |
| 111 | RNDIS_OID_GEN_RCV_CRC_ERROR, |
| 112 | RNDIS_OID_GEN_TRANSMIT_QUEUE_LENGTH, |
| 113 | #endif /* RNDIS_OPTIONAL_STATS */ |
| 114 | |
| 115 | /* mandatory 802.3 */ |
| 116 | /* the general stuff */ |
| 117 | RNDIS_OID_802_3_PERMANENT_ADDRESS, |
| 118 | RNDIS_OID_802_3_CURRENT_ADDRESS, |
| 119 | RNDIS_OID_802_3_MULTICAST_LIST, |
| 120 | RNDIS_OID_802_3_MAC_OPTIONS, |
| 121 | RNDIS_OID_802_3_MAXIMUM_LIST_SIZE, |
| 122 | |
| 123 | /* the statistical stuff */ |
| 124 | RNDIS_OID_802_3_RCV_ERROR_ALIGNMENT, |
| 125 | RNDIS_OID_802_3_XMIT_ONE_COLLISION, |
| 126 | RNDIS_OID_802_3_XMIT_MORE_COLLISIONS, |
| 127 | #ifdef RNDIS_OPTIONAL_STATS |
| 128 | RNDIS_OID_802_3_XMIT_DEFERRED, |
| 129 | RNDIS_OID_802_3_XMIT_MAX_COLLISIONS, |
| 130 | RNDIS_OID_802_3_RCV_OVERRUN, |
| 131 | RNDIS_OID_802_3_XMIT_UNDERRUN, |
| 132 | RNDIS_OID_802_3_XMIT_HEARTBEAT_FAILURE, |
| 133 | RNDIS_OID_802_3_XMIT_TIMES_CRS_LOST, |
| 134 | RNDIS_OID_802_3_XMIT_LATE_COLLISIONS, |
| 135 | #endif /* RNDIS_OPTIONAL_STATS */ |
| 136 | |
| 137 | #ifdef RNDIS_PM |
| 138 | /* PM and wakeup are "mandatory" for USB, but the RNDIS specs |
| 139 | * don't say what they mean ... and the NDIS specs are often |
| 140 | * confusing and/or ambiguous in this context. (That is, more |
| 141 | * so than their specs for the other OIDs.) |
| 142 | * |
| 143 | * FIXME someone who knows what these should do, please |
| 144 | * implement them! |
| 145 | */ |
| 146 | |
| 147 | /* power management */ |
| 148 | OID_PNP_CAPABILITIES, |
| 149 | OID_PNP_QUERY_POWER, |
| 150 | OID_PNP_SET_POWER, |
| 151 | |
| 152 | #ifdef RNDIS_WAKEUP |
| 153 | /* wake up host */ |
| 154 | OID_PNP_ENABLE_WAKE_UP, |
| 155 | OID_PNP_ADD_WAKE_UP_PATTERN, |
| 156 | OID_PNP_REMOVE_WAKE_UP_PATTERN, |
| 157 | #endif /* RNDIS_WAKEUP */ |
| 158 | #endif /* RNDIS_PM */ |
| 159 | }; |
| 160 | |
| 161 | |
| 162 | /* NDIS Functions */ |
| 163 | static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf, |
| 164 | unsigned buf_len, rndis_resp_t *r) |
| 165 | { |
| 166 | int retval = -ENOTSUPP; |
| 167 | u32 length = 4; /* usually */ |
| 168 | __le32 *outbuf; |
| 169 | int i, count; |
| 170 | rndis_query_cmplt_type *resp; |
| 171 | struct net_device *net; |
| 172 | struct rtnl_link_stats64 temp; |
| 173 | const struct rtnl_link_stats64 *stats; |
| 174 | |
| 175 | if (!r) return -ENOMEM; |
| 176 | resp = (rndis_query_cmplt_type *)r->buf; |
| 177 | |
| 178 | if (!resp) return -ENOMEM; |
| 179 | |
| 180 | if (buf_len && rndis_debug > 1) { |
| 181 | pr_debug("query OID %08x value, len %d:\n", OID, buf_len); |
| 182 | for (i = 0; i < buf_len; i += 16) { |
| 183 | pr_debug("%03d: %08x %08x %08x %08x\n", i, |
| 184 | get_unaligned_le32(&buf[i]), |
| 185 | get_unaligned_le32(&buf[i + 4]), |
| 186 | get_unaligned_le32(&buf[i + 8]), |
| 187 | get_unaligned_le32(&buf[i + 12])); |
| 188 | } |
| 189 | } |
| 190 | |
| 191 | /* response goes here, right after the header */ |
| 192 | outbuf = (__le32 *)&resp[1]; |
| 193 | resp->InformationBufferOffset = cpu_to_le32(16); |
| 194 | |
| 195 | net = rndis_per_dev_params[configNr].dev; |
| 196 | stats = dev_get_stats(net, &temp); |
| 197 | |
| 198 | switch (OID) { |
| 199 | |
| 200 | /* general oids (table 4-1) */ |
| 201 | |
| 202 | /* mandatory */ |
| 203 | case RNDIS_OID_GEN_SUPPORTED_LIST: |
| 204 | pr_debug("%s: RNDIS_OID_GEN_SUPPORTED_LIST\n", __func__); |
| 205 | length = sizeof(oid_supported_list); |
| 206 | count = length / sizeof(u32); |
| 207 | for (i = 0; i < count; i++) |
| 208 | outbuf[i] = cpu_to_le32(oid_supported_list[i]); |
| 209 | retval = 0; |
| 210 | break; |
| 211 | |
| 212 | /* mandatory */ |
| 213 | case RNDIS_OID_GEN_HARDWARE_STATUS: |
| 214 | pr_debug("%s: RNDIS_OID_GEN_HARDWARE_STATUS\n", __func__); |
| 215 | /* Bogus question! |
| 216 | * Hardware must be ready to receive high level protocols. |
| 217 | * BTW: |
| 218 | * reddite ergo quae sunt Caesaris Caesari |
| 219 | * et quae sunt Dei Deo! |
| 220 | */ |
| 221 | *outbuf = cpu_to_le32(0); |
| 222 | retval = 0; |
| 223 | break; |
| 224 | |
| 225 | /* mandatory */ |
| 226 | case RNDIS_OID_GEN_MEDIA_SUPPORTED: |
| 227 | pr_debug("%s: RNDIS_OID_GEN_MEDIA_SUPPORTED\n", __func__); |
| 228 | *outbuf = cpu_to_le32(rndis_per_dev_params[configNr].medium); |
| 229 | retval = 0; |
| 230 | break; |
| 231 | |
| 232 | /* mandatory */ |
| 233 | case RNDIS_OID_GEN_MEDIA_IN_USE: |
| 234 | pr_debug("%s: RNDIS_OID_GEN_MEDIA_IN_USE\n", __func__); |
| 235 | /* one medium, one transport... (maybe you do it better) */ |
| 236 | *outbuf = cpu_to_le32(rndis_per_dev_params[configNr].medium); |
| 237 | retval = 0; |
| 238 | break; |
| 239 | |
| 240 | /* mandatory */ |
| 241 | case RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE: |
| 242 | pr_debug("%s: RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE\n", __func__); |
| 243 | if (rndis_per_dev_params[configNr].dev) { |
| 244 | *outbuf = cpu_to_le32( |
| 245 | rndis_per_dev_params[configNr].dev->mtu); |
| 246 | retval = 0; |
| 247 | } |
| 248 | break; |
| 249 | |
| 250 | /* mandatory */ |
| 251 | case RNDIS_OID_GEN_LINK_SPEED: |
| 252 | if (rndis_debug > 1) |
| 253 | pr_debug("%s: RNDIS_OID_GEN_LINK_SPEED\n", __func__); |
| 254 | if (rndis_per_dev_params[configNr].media_state |
| 255 | == RNDIS_MEDIA_STATE_DISCONNECTED) |
| 256 | *outbuf = cpu_to_le32(0); |
| 257 | else |
| 258 | *outbuf = cpu_to_le32( |
| 259 | rndis_per_dev_params[configNr].speed); |
| 260 | retval = 0; |
| 261 | break; |
| 262 | |
| 263 | /* mandatory */ |
| 264 | case RNDIS_OID_GEN_TRANSMIT_BLOCK_SIZE: |
| 265 | pr_debug("%s: RNDIS_OID_GEN_TRANSMIT_BLOCK_SIZE\n", __func__); |
| 266 | if (rndis_per_dev_params[configNr].dev) { |
| 267 | *outbuf = cpu_to_le32( |
| 268 | rndis_per_dev_params[configNr].dev->mtu); |
| 269 | retval = 0; |
| 270 | } |
| 271 | break; |
| 272 | |
| 273 | /* mandatory */ |
| 274 | case RNDIS_OID_GEN_RECEIVE_BLOCK_SIZE: |
| 275 | pr_debug("%s: RNDIS_OID_GEN_RECEIVE_BLOCK_SIZE\n", __func__); |
| 276 | if (rndis_per_dev_params[configNr].dev) { |
| 277 | *outbuf = cpu_to_le32( |
| 278 | rndis_per_dev_params[configNr].dev->mtu); |
| 279 | retval = 0; |
| 280 | } |
| 281 | break; |
| 282 | |
| 283 | /* mandatory */ |
| 284 | case RNDIS_OID_GEN_VENDOR_ID: |
| 285 | pr_debug("%s: RNDIS_OID_GEN_VENDOR_ID\n", __func__); |
| 286 | *outbuf = cpu_to_le32( |
| 287 | rndis_per_dev_params[configNr].vendorID); |
| 288 | retval = 0; |
| 289 | break; |
| 290 | |
| 291 | /* mandatory */ |
| 292 | case RNDIS_OID_GEN_VENDOR_DESCRIPTION: |
| 293 | pr_debug("%s: RNDIS_OID_GEN_VENDOR_DESCRIPTION\n", __func__); |
| 294 | if (rndis_per_dev_params[configNr].vendorDescr) { |
| 295 | length = strlen(rndis_per_dev_params[configNr]. |
| 296 | vendorDescr); |
| 297 | memcpy(outbuf, |
| 298 | rndis_per_dev_params[configNr].vendorDescr, |
| 299 | length); |
| 300 | } else { |
| 301 | outbuf[0] = 0; |
| 302 | } |
| 303 | retval = 0; |
| 304 | break; |
| 305 | |
| 306 | case RNDIS_OID_GEN_VENDOR_DRIVER_VERSION: |
| 307 | pr_debug("%s: RNDIS_OID_GEN_VENDOR_DRIVER_VERSION\n", __func__); |
| 308 | /* Created as LE */ |
| 309 | *outbuf = rndis_driver_version; |
| 310 | retval = 0; |
| 311 | break; |
| 312 | |
| 313 | /* mandatory */ |
| 314 | case RNDIS_OID_GEN_CURRENT_PACKET_FILTER: |
| 315 | pr_debug("%s: RNDIS_OID_GEN_CURRENT_PACKET_FILTER\n", __func__); |
| 316 | *outbuf = cpu_to_le32(*rndis_per_dev_params[configNr].filter); |
| 317 | retval = 0; |
| 318 | break; |
| 319 | |
| 320 | /* mandatory */ |
| 321 | case RNDIS_OID_GEN_MAXIMUM_TOTAL_SIZE: |
| 322 | pr_debug("%s: RNDIS_OID_GEN_MAXIMUM_TOTAL_SIZE\n", __func__); |
| 323 | *outbuf = cpu_to_le32(RNDIS_MAX_TOTAL_SIZE); |
| 324 | retval = 0; |
| 325 | break; |
| 326 | |
| 327 | /* mandatory */ |
| 328 | case RNDIS_OID_GEN_MEDIA_CONNECT_STATUS: |
| 329 | if (rndis_debug > 1) |
| 330 | pr_debug("%s: RNDIS_OID_GEN_MEDIA_CONNECT_STATUS\n", __func__); |
| 331 | *outbuf = cpu_to_le32(rndis_per_dev_params[configNr] |
| 332 | .media_state); |
| 333 | retval = 0; |
| 334 | break; |
| 335 | |
| 336 | case RNDIS_OID_GEN_PHYSICAL_MEDIUM: |
| 337 | pr_debug("%s: RNDIS_OID_GEN_PHYSICAL_MEDIUM\n", __func__); |
| 338 | *outbuf = cpu_to_le32(0); |
| 339 | retval = 0; |
| 340 | break; |
| 341 | |
| 342 | /* The RNDIS specification is incomplete/wrong. Some versions |
| 343 | * of MS-Windows expect OIDs that aren't specified there. Other |
| 344 | * versions emit undefined RNDIS messages. DOCUMENT ALL THESE! |
| 345 | */ |
| 346 | case RNDIS_OID_GEN_MAC_OPTIONS: /* from WinME */ |
| 347 | pr_debug("%s: RNDIS_OID_GEN_MAC_OPTIONS\n", __func__); |
| 348 | *outbuf = cpu_to_le32( |
| 349 | RNDIS_MAC_OPTION_RECEIVE_SERIALIZED |
| 350 | | RNDIS_MAC_OPTION_FULL_DUPLEX); |
| 351 | retval = 0; |
| 352 | break; |
| 353 | |
| 354 | /* statistics OIDs (table 4-2) */ |
| 355 | |
| 356 | /* mandatory */ |
| 357 | case RNDIS_OID_GEN_XMIT_OK: |
| 358 | if (rndis_debug > 1) |
| 359 | pr_debug("%s: RNDIS_OID_GEN_XMIT_OK\n", __func__); |
| 360 | if (stats) { |
| 361 | *outbuf = cpu_to_le32(stats->tx_packets |
| 362 | - stats->tx_errors - stats->tx_dropped); |
| 363 | retval = 0; |
| 364 | } |
| 365 | break; |
| 366 | |
| 367 | /* mandatory */ |
| 368 | case RNDIS_OID_GEN_RCV_OK: |
| 369 | if (rndis_debug > 1) |
| 370 | pr_debug("%s: RNDIS_OID_GEN_RCV_OK\n", __func__); |
| 371 | if (stats) { |
| 372 | *outbuf = cpu_to_le32(stats->rx_packets |
| 373 | - stats->rx_errors - stats->rx_dropped); |
| 374 | retval = 0; |
| 375 | } |
| 376 | break; |
| 377 | |
| 378 | /* mandatory */ |
| 379 | case RNDIS_OID_GEN_XMIT_ERROR: |
| 380 | if (rndis_debug > 1) |
| 381 | pr_debug("%s: RNDIS_OID_GEN_XMIT_ERROR\n", __func__); |
| 382 | if (stats) { |
| 383 | *outbuf = cpu_to_le32(stats->tx_errors); |
| 384 | retval = 0; |
| 385 | } |
| 386 | break; |
| 387 | |
| 388 | /* mandatory */ |
| 389 | case RNDIS_OID_GEN_RCV_ERROR: |
| 390 | if (rndis_debug > 1) |
| 391 | pr_debug("%s: RNDIS_OID_GEN_RCV_ERROR\n", __func__); |
| 392 | if (stats) { |
| 393 | *outbuf = cpu_to_le32(stats->rx_errors); |
| 394 | retval = 0; |
| 395 | } |
| 396 | break; |
| 397 | |
| 398 | /* mandatory */ |
| 399 | case RNDIS_OID_GEN_RCV_NO_BUFFER: |
| 400 | pr_debug("%s: RNDIS_OID_GEN_RCV_NO_BUFFER\n", __func__); |
| 401 | if (stats) { |
| 402 | *outbuf = cpu_to_le32(stats->rx_dropped); |
| 403 | retval = 0; |
| 404 | } |
| 405 | break; |
| 406 | |
| 407 | /* ieee802.3 OIDs (table 4-3) */ |
| 408 | |
| 409 | /* mandatory */ |
| 410 | case RNDIS_OID_802_3_PERMANENT_ADDRESS: |
| 411 | pr_debug("%s: RNDIS_OID_802_3_PERMANENT_ADDRESS\n", __func__); |
| 412 | if (rndis_per_dev_params[configNr].dev) { |
| 413 | length = ETH_ALEN; |
| 414 | memcpy(outbuf, |
| 415 | rndis_per_dev_params[configNr].host_mac, |
| 416 | length); |
| 417 | retval = 0; |
| 418 | } |
| 419 | break; |
| 420 | |
| 421 | /* mandatory */ |
| 422 | case RNDIS_OID_802_3_CURRENT_ADDRESS: |
| 423 | pr_debug("%s: RNDIS_OID_802_3_CURRENT_ADDRESS\n", __func__); |
| 424 | if (rndis_per_dev_params[configNr].dev) { |
| 425 | length = ETH_ALEN; |
| 426 | memcpy(outbuf, |
| 427 | rndis_per_dev_params [configNr].host_mac, |
| 428 | length); |
| 429 | retval = 0; |
| 430 | } |
| 431 | break; |
| 432 | |
| 433 | /* mandatory */ |
| 434 | case RNDIS_OID_802_3_MULTICAST_LIST: |
| 435 | pr_debug("%s: RNDIS_OID_802_3_MULTICAST_LIST\n", __func__); |
| 436 | /* Multicast base address only */ |
| 437 | *outbuf = cpu_to_le32(0xE0000000); |
| 438 | retval = 0; |
| 439 | break; |
| 440 | |
| 441 | /* mandatory */ |
| 442 | case RNDIS_OID_802_3_MAXIMUM_LIST_SIZE: |
| 443 | pr_debug("%s: RNDIS_OID_802_3_MAXIMUM_LIST_SIZE\n", __func__); |
| 444 | /* Multicast base address only */ |
| 445 | *outbuf = cpu_to_le32(1); |
| 446 | retval = 0; |
| 447 | break; |
| 448 | |
| 449 | case RNDIS_OID_802_3_MAC_OPTIONS: |
| 450 | pr_debug("%s: RNDIS_OID_802_3_MAC_OPTIONS\n", __func__); |
| 451 | *outbuf = cpu_to_le32(0); |
| 452 | retval = 0; |
| 453 | break; |
| 454 | |
| 455 | /* ieee802.3 statistics OIDs (table 4-4) */ |
| 456 | |
| 457 | /* mandatory */ |
| 458 | case RNDIS_OID_802_3_RCV_ERROR_ALIGNMENT: |
| 459 | pr_debug("%s: RNDIS_OID_802_3_RCV_ERROR_ALIGNMENT\n", __func__); |
| 460 | if (stats) { |
| 461 | *outbuf = cpu_to_le32(stats->rx_frame_errors); |
| 462 | retval = 0; |
| 463 | } |
| 464 | break; |
| 465 | |
| 466 | /* mandatory */ |
| 467 | case RNDIS_OID_802_3_XMIT_ONE_COLLISION: |
| 468 | pr_debug("%s: RNDIS_OID_802_3_XMIT_ONE_COLLISION\n", __func__); |
| 469 | *outbuf = cpu_to_le32(0); |
| 470 | retval = 0; |
| 471 | break; |
| 472 | |
| 473 | /* mandatory */ |
| 474 | case RNDIS_OID_802_3_XMIT_MORE_COLLISIONS: |
| 475 | pr_debug("%s: RNDIS_OID_802_3_XMIT_MORE_COLLISIONS\n", __func__); |
| 476 | *outbuf = cpu_to_le32(0); |
| 477 | retval = 0; |
| 478 | break; |
| 479 | |
| 480 | default: |
| 481 | pr_warning("%s: query unknown OID 0x%08X\n", |
| 482 | __func__, OID); |
| 483 | } |
| 484 | if (retval < 0) |
| 485 | length = 0; |
| 486 | |
| 487 | resp->InformationBufferLength = cpu_to_le32(length); |
| 488 | r->length = length + sizeof(*resp); |
| 489 | resp->MessageLength = cpu_to_le32(r->length); |
| 490 | return retval; |
| 491 | } |
| 492 | |
| 493 | static int gen_ndis_set_resp(u8 configNr, u32 OID, u8 *buf, u32 buf_len, |
| 494 | rndis_resp_t *r) |
| 495 | { |
| 496 | rndis_set_cmplt_type *resp; |
| 497 | int i, retval = -ENOTSUPP; |
| 498 | struct rndis_params *params; |
| 499 | |
| 500 | if (!r) |
| 501 | return -ENOMEM; |
| 502 | resp = (rndis_set_cmplt_type *)r->buf; |
| 503 | if (!resp) |
| 504 | return -ENOMEM; |
| 505 | |
| 506 | if (buf_len && rndis_debug > 1) { |
| 507 | pr_debug("set OID %08x value, len %d:\n", OID, buf_len); |
| 508 | for (i = 0; i < buf_len; i += 16) { |
| 509 | pr_debug("%03d: %08x %08x %08x %08x\n", i, |
| 510 | get_unaligned_le32(&buf[i]), |
| 511 | get_unaligned_le32(&buf[i + 4]), |
| 512 | get_unaligned_le32(&buf[i + 8]), |
| 513 | get_unaligned_le32(&buf[i + 12])); |
| 514 | } |
| 515 | } |
| 516 | |
| 517 | params = &rndis_per_dev_params[configNr]; |
| 518 | switch (OID) { |
| 519 | case RNDIS_OID_GEN_CURRENT_PACKET_FILTER: |
| 520 | |
| 521 | /* these NDIS_PACKET_TYPE_* bitflags are shared with |
| 522 | * cdc_filter; it's not RNDIS-specific |
| 523 | * NDIS_PACKET_TYPE_x == USB_CDC_PACKET_TYPE_x for x in: |
| 524 | * PROMISCUOUS, DIRECTED, |
| 525 | * MULTICAST, ALL_MULTICAST, BROADCAST |
| 526 | */ |
| 527 | *params->filter = (u16)get_unaligned_le32(buf); |
| 528 | pr_debug("%s: RNDIS_OID_GEN_CURRENT_PACKET_FILTER %08x\n", |
| 529 | __func__, *params->filter); |
| 530 | |
| 531 | /* this call has a significant side effect: it's |
| 532 | * what makes the packet flow start and stop, like |
| 533 | * activating the CDC Ethernet altsetting. |
| 534 | */ |
| 535 | retval = 0; |
| 536 | if (*params->filter) { |
| 537 | params->state = RNDIS_DATA_INITIALIZED; |
| 538 | netif_carrier_on(params->dev); |
| 539 | if (netif_running(params->dev)) |
| 540 | netif_wake_queue(params->dev); |
| 541 | } else { |
| 542 | params->state = RNDIS_INITIALIZED; |
| 543 | netif_carrier_off(params->dev); |
| 544 | netif_stop_queue(params->dev); |
| 545 | } |
| 546 | break; |
| 547 | |
| 548 | case RNDIS_OID_802_3_MULTICAST_LIST: |
| 549 | /* I think we can ignore this */ |
| 550 | pr_debug("%s: RNDIS_OID_802_3_MULTICAST_LIST\n", __func__); |
| 551 | retval = 0; |
| 552 | break; |
| 553 | |
| 554 | default: |
| 555 | pr_warning("%s: set unknown OID 0x%08X, size %d\n", |
| 556 | __func__, OID, buf_len); |
| 557 | } |
| 558 | |
| 559 | return retval; |
| 560 | } |
| 561 | |
| 562 | /* |
| 563 | * Response Functions |
| 564 | */ |
| 565 | |
| 566 | static int rndis_init_response(int configNr, rndis_init_msg_type *buf) |
| 567 | { |
| 568 | rndis_init_cmplt_type *resp; |
| 569 | rndis_resp_t *r; |
| 570 | struct rndis_params *params = rndis_per_dev_params + configNr; |
| 571 | |
| 572 | if (!params->dev) |
| 573 | return -ENOTSUPP; |
| 574 | |
| 575 | r = rndis_add_response(configNr, sizeof(rndis_init_cmplt_type)); |
| 576 | if (!r) |
| 577 | return -ENOMEM; |
| 578 | resp = (rndis_init_cmplt_type *)r->buf; |
| 579 | |
| 580 | resp->MessageType = cpu_to_le32(RNDIS_MSG_INIT_C); |
| 581 | resp->MessageLength = cpu_to_le32(52); |
| 582 | resp->RequestID = buf->RequestID; /* Still LE in msg buffer */ |
| 583 | resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS); |
| 584 | resp->MajorVersion = cpu_to_le32(RNDIS_MAJOR_VERSION); |
| 585 | resp->MinorVersion = cpu_to_le32(RNDIS_MINOR_VERSION); |
| 586 | resp->DeviceFlags = cpu_to_le32(RNDIS_DF_CONNECTIONLESS); |
| 587 | resp->Medium = cpu_to_le32(RNDIS_MEDIUM_802_3); |
| 588 | resp->MaxPacketsPerTransfer = cpu_to_le32(1); |
| 589 | resp->MaxTransferSize = cpu_to_le32( |
| 590 | params->dev->mtu |
| 591 | + sizeof(struct ethhdr) |
| 592 | + sizeof(struct rndis_packet_msg_type) |
| 593 | + 22); |
| 594 | resp->PacketAlignmentFactor = cpu_to_le32(0); |
| 595 | resp->AFListOffset = cpu_to_le32(0); |
| 596 | resp->AFListSize = cpu_to_le32(0); |
| 597 | |
| 598 | params->resp_avail(params->v); |
| 599 | return 0; |
| 600 | } |
| 601 | |
| 602 | static int rndis_query_response(int configNr, rndis_query_msg_type *buf) |
| 603 | { |
| 604 | rndis_query_cmplt_type *resp; |
| 605 | rndis_resp_t *r; |
| 606 | struct rndis_params *params = rndis_per_dev_params + configNr; |
| 607 | |
| 608 | /* pr_debug("%s: OID = %08X\n", __func__, cpu_to_le32(buf->OID)); */ |
| 609 | if (!params->dev) |
| 610 | return -ENOTSUPP; |
| 611 | |
| 612 | /* |
| 613 | * we need more memory: |
| 614 | * gen_ndis_query_resp expects enough space for |
| 615 | * rndis_query_cmplt_type followed by data. |
| 616 | * oid_supported_list is the largest data reply |
| 617 | */ |
| 618 | r = rndis_add_response(configNr, |
| 619 | sizeof(oid_supported_list) + sizeof(rndis_query_cmplt_type)); |
| 620 | if (!r) |
| 621 | return -ENOMEM; |
| 622 | resp = (rndis_query_cmplt_type *)r->buf; |
| 623 | |
| 624 | resp->MessageType = cpu_to_le32(RNDIS_MSG_QUERY_C); |
| 625 | resp->RequestID = buf->RequestID; /* Still LE in msg buffer */ |
| 626 | |
| 627 | if (gen_ndis_query_resp(configNr, le32_to_cpu(buf->OID), |
| 628 | le32_to_cpu(buf->InformationBufferOffset) |
| 629 | + 8 + (u8 *)buf, |
| 630 | le32_to_cpu(buf->InformationBufferLength), |
| 631 | r)) { |
| 632 | /* OID not supported */ |
| 633 | resp->Status = cpu_to_le32(RNDIS_STATUS_NOT_SUPPORTED); |
| 634 | resp->MessageLength = cpu_to_le32(sizeof *resp); |
| 635 | resp->InformationBufferLength = cpu_to_le32(0); |
| 636 | resp->InformationBufferOffset = cpu_to_le32(0); |
| 637 | } else |
| 638 | resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS); |
| 639 | |
| 640 | params->resp_avail(params->v); |
| 641 | return 0; |
| 642 | } |
| 643 | |
| 644 | static int rndis_set_response(int configNr, rndis_set_msg_type *buf) |
| 645 | { |
| 646 | u32 BufLength, BufOffset; |
| 647 | rndis_set_cmplt_type *resp; |
| 648 | rndis_resp_t *r; |
| 649 | struct rndis_params *params = rndis_per_dev_params + configNr; |
| 650 | |
| 651 | r = rndis_add_response(configNr, sizeof(rndis_set_cmplt_type)); |
| 652 | if (!r) |
| 653 | return -ENOMEM; |
| 654 | resp = (rndis_set_cmplt_type *)r->buf; |
| 655 | |
| 656 | BufLength = le32_to_cpu(buf->InformationBufferLength); |
| 657 | BufOffset = le32_to_cpu(buf->InformationBufferOffset); |
| 658 | |
| 659 | #ifdef VERBOSE_DEBUG |
| 660 | pr_debug("%s: Length: %d\n", __func__, BufLength); |
| 661 | pr_debug("%s: Offset: %d\n", __func__, BufOffset); |
| 662 | pr_debug("%s: InfoBuffer: ", __func__); |
| 663 | |
| 664 | for (i = 0; i < BufLength; i++) { |
| 665 | pr_debug("%02x ", *(((u8 *) buf) + i + 8 + BufOffset)); |
| 666 | } |
| 667 | |
| 668 | pr_debug("\n"); |
| 669 | #endif |
| 670 | |
| 671 | resp->MessageType = cpu_to_le32(RNDIS_MSG_SET_C); |
| 672 | resp->MessageLength = cpu_to_le32(16); |
| 673 | resp->RequestID = buf->RequestID; /* Still LE in msg buffer */ |
| 674 | if (gen_ndis_set_resp(configNr, le32_to_cpu(buf->OID), |
| 675 | ((u8 *)buf) + 8 + BufOffset, BufLength, r)) |
| 676 | resp->Status = cpu_to_le32(RNDIS_STATUS_NOT_SUPPORTED); |
| 677 | else |
| 678 | resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS); |
| 679 | |
| 680 | params->resp_avail(params->v); |
| 681 | return 0; |
| 682 | } |
| 683 | |
| 684 | static int rndis_reset_response(int configNr, rndis_reset_msg_type *buf) |
| 685 | { |
| 686 | rndis_reset_cmplt_type *resp; |
| 687 | rndis_resp_t *r; |
| 688 | struct rndis_params *params = rndis_per_dev_params + configNr; |
| 689 | |
| 690 | r = rndis_add_response(configNr, sizeof(rndis_reset_cmplt_type)); |
| 691 | if (!r) |
| 692 | return -ENOMEM; |
| 693 | resp = (rndis_reset_cmplt_type *)r->buf; |
| 694 | |
| 695 | resp->MessageType = cpu_to_le32(RNDIS_MSG_RESET_C); |
| 696 | resp->MessageLength = cpu_to_le32(16); |
| 697 | resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS); |
| 698 | /* resent information */ |
| 699 | resp->AddressingReset = cpu_to_le32(1); |
| 700 | |
| 701 | params->resp_avail(params->v); |
| 702 | return 0; |
| 703 | } |
| 704 | |
| 705 | static int rndis_keepalive_response(int configNr, |
| 706 | rndis_keepalive_msg_type *buf) |
| 707 | { |
| 708 | rndis_keepalive_cmplt_type *resp; |
| 709 | rndis_resp_t *r; |
| 710 | struct rndis_params *params = rndis_per_dev_params + configNr; |
| 711 | |
| 712 | /* host "should" check only in RNDIS_DATA_INITIALIZED state */ |
| 713 | |
| 714 | r = rndis_add_response(configNr, sizeof(rndis_keepalive_cmplt_type)); |
| 715 | if (!r) |
| 716 | return -ENOMEM; |
| 717 | resp = (rndis_keepalive_cmplt_type *)r->buf; |
| 718 | |
| 719 | resp->MessageType = cpu_to_le32(RNDIS_MSG_KEEPALIVE_C); |
| 720 | resp->MessageLength = cpu_to_le32(16); |
| 721 | resp->RequestID = buf->RequestID; /* Still LE in msg buffer */ |
| 722 | resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS); |
| 723 | |
| 724 | params->resp_avail(params->v); |
| 725 | return 0; |
| 726 | } |
| 727 | |
| 728 | |
| 729 | /* |
| 730 | * Device to Host Comunication |
| 731 | */ |
| 732 | static int rndis_indicate_status_msg(int configNr, u32 status) |
| 733 | { |
| 734 | rndis_indicate_status_msg_type *resp; |
| 735 | rndis_resp_t *r; |
| 736 | struct rndis_params *params = rndis_per_dev_params + configNr; |
| 737 | |
| 738 | if (params->state == RNDIS_UNINITIALIZED) |
| 739 | return -ENOTSUPP; |
| 740 | |
| 741 | r = rndis_add_response(configNr, |
| 742 | sizeof(rndis_indicate_status_msg_type)); |
| 743 | if (!r) |
| 744 | return -ENOMEM; |
| 745 | resp = (rndis_indicate_status_msg_type *)r->buf; |
| 746 | |
| 747 | resp->MessageType = cpu_to_le32(RNDIS_MSG_INDICATE); |
| 748 | resp->MessageLength = cpu_to_le32(20); |
| 749 | resp->Status = cpu_to_le32(status); |
| 750 | resp->StatusBufferLength = cpu_to_le32(0); |
| 751 | resp->StatusBufferOffset = cpu_to_le32(0); |
| 752 | |
| 753 | params->resp_avail(params->v); |
| 754 | return 0; |
| 755 | } |
| 756 | |
| 757 | int rndis_signal_connect(int configNr) |
| 758 | { |
| 759 | rndis_per_dev_params[configNr].media_state |
| 760 | = RNDIS_MEDIA_STATE_CONNECTED; |
| 761 | return rndis_indicate_status_msg(configNr, |
| 762 | RNDIS_STATUS_MEDIA_CONNECT); |
| 763 | } |
| 764 | |
| 765 | int rndis_signal_disconnect(int configNr) |
| 766 | { |
| 767 | rndis_per_dev_params[configNr].media_state |
| 768 | = RNDIS_MEDIA_STATE_DISCONNECTED; |
| 769 | return rndis_indicate_status_msg(configNr, |
| 770 | RNDIS_STATUS_MEDIA_DISCONNECT); |
| 771 | } |
| 772 | |
| 773 | void rndis_uninit(int configNr) |
| 774 | { |
| 775 | u8 *buf; |
| 776 | u32 length; |
| 777 | |
| 778 | if (configNr >= RNDIS_MAX_CONFIGS) |
| 779 | return; |
| 780 | rndis_per_dev_params[configNr].state = RNDIS_UNINITIALIZED; |
| 781 | |
| 782 | /* drain the response queue */ |
| 783 | while ((buf = rndis_get_next_response(configNr, &length))) |
| 784 | rndis_free_response(configNr, buf); |
| 785 | } |
| 786 | |
| 787 | void rndis_set_host_mac(int configNr, const u8 *addr) |
| 788 | { |
| 789 | rndis_per_dev_params[configNr].host_mac = addr; |
| 790 | } |
| 791 | |
| 792 | /* |
| 793 | * Message Parser |
| 794 | */ |
| 795 | int rndis_msg_parser(u8 configNr, u8 *buf) |
| 796 | { |
| 797 | u32 MsgType, MsgLength; |
| 798 | __le32 *tmp; |
| 799 | struct rndis_params *params; |
| 800 | |
| 801 | if (!buf) |
| 802 | return -ENOMEM; |
| 803 | |
| 804 | tmp = (__le32 *)buf; |
| 805 | MsgType = get_unaligned_le32(tmp++); |
| 806 | MsgLength = get_unaligned_le32(tmp++); |
| 807 | |
| 808 | if (configNr >= RNDIS_MAX_CONFIGS) |
| 809 | return -ENOTSUPP; |
| 810 | params = &rndis_per_dev_params[configNr]; |
| 811 | |
| 812 | /* NOTE: RNDIS is *EXTREMELY* chatty ... Windows constantly polls for |
| 813 | * rx/tx statistics and link status, in addition to KEEPALIVE traffic |
| 814 | * and normal HC level polling to see if there's any IN traffic. |
| 815 | */ |
| 816 | |
| 817 | /* For USB: responses may take up to 10 seconds */ |
| 818 | switch (MsgType) { |
| 819 | case RNDIS_MSG_INIT: |
| 820 | pr_debug("%s: RNDIS_MSG_INIT\n", |
| 821 | __func__); |
| 822 | params->state = RNDIS_INITIALIZED; |
| 823 | return rndis_init_response(configNr, |
| 824 | (rndis_init_msg_type *)buf); |
| 825 | |
| 826 | case RNDIS_MSG_HALT: |
| 827 | pr_debug("%s: RNDIS_MSG_HALT\n", |
| 828 | __func__); |
| 829 | params->state = RNDIS_UNINITIALIZED; |
| 830 | if (params->dev) { |
| 831 | netif_carrier_off(params->dev); |
| 832 | netif_stop_queue(params->dev); |
| 833 | } |
| 834 | return 0; |
| 835 | |
| 836 | case RNDIS_MSG_QUERY: |
| 837 | return rndis_query_response(configNr, |
| 838 | (rndis_query_msg_type *)buf); |
| 839 | |
| 840 | case RNDIS_MSG_SET: |
| 841 | return rndis_set_response(configNr, |
| 842 | (rndis_set_msg_type *)buf); |
| 843 | |
| 844 | case RNDIS_MSG_RESET: |
| 845 | pr_debug("%s: RNDIS_MSG_RESET\n", |
| 846 | __func__); |
| 847 | return rndis_reset_response(configNr, |
| 848 | (rndis_reset_msg_type *)buf); |
| 849 | |
| 850 | case RNDIS_MSG_KEEPALIVE: |
| 851 | /* For USB: host does this every 5 seconds */ |
| 852 | if (rndis_debug > 1) |
| 853 | pr_debug("%s: RNDIS_MSG_KEEPALIVE\n", |
| 854 | __func__); |
| 855 | return rndis_keepalive_response(configNr, |
| 856 | (rndis_keepalive_msg_type *) |
| 857 | buf); |
| 858 | |
| 859 | default: |
| 860 | /* At least Windows XP emits some undefined RNDIS messages. |
| 861 | * In one case those messages seemed to relate to the host |
| 862 | * suspending itself. |
| 863 | */ |
| 864 | pr_warning("%s: unknown RNDIS message 0x%08X len %d\n", |
| 865 | __func__, MsgType, MsgLength); |
| 866 | print_hex_dump_bytes(__func__, DUMP_PREFIX_OFFSET, |
| 867 | buf, MsgLength); |
| 868 | break; |
| 869 | } |
| 870 | |
| 871 | return -ENOTSUPP; |
| 872 | } |
| 873 | |
| 874 | int rndis_register(void (*resp_avail)(void *v), void *v) |
| 875 | { |
| 876 | u8 i; |
| 877 | |
| 878 | if (!resp_avail) |
| 879 | return -EINVAL; |
| 880 | |
| 881 | for (i = 0; i < RNDIS_MAX_CONFIGS; i++) { |
| 882 | if (!rndis_per_dev_params[i].used) { |
| 883 | rndis_per_dev_params[i].used = 1; |
| 884 | rndis_per_dev_params[i].resp_avail = resp_avail; |
| 885 | rndis_per_dev_params[i].v = v; |
| 886 | pr_debug("%s: configNr = %d\n", __func__, i); |
| 887 | return i; |
| 888 | } |
| 889 | } |
| 890 | pr_debug("failed\n"); |
| 891 | |
| 892 | return -ENODEV; |
| 893 | } |
| 894 | |
| 895 | void rndis_deregister(int configNr) |
| 896 | { |
| 897 | pr_debug("%s:\n", __func__); |
| 898 | |
| 899 | if (configNr >= RNDIS_MAX_CONFIGS) return; |
| 900 | rndis_per_dev_params[configNr].used = 0; |
| 901 | } |
| 902 | |
| 903 | int rndis_set_param_dev(u8 configNr, struct net_device *dev, u16 *cdc_filter) |
| 904 | { |
| 905 | pr_debug("%s:\n", __func__); |
| 906 | if (!dev) |
| 907 | return -EINVAL; |
| 908 | if (configNr >= RNDIS_MAX_CONFIGS) return -1; |
| 909 | |
| 910 | rndis_per_dev_params[configNr].dev = dev; |
| 911 | rndis_per_dev_params[configNr].filter = cdc_filter; |
| 912 | |
| 913 | return 0; |
| 914 | } |
| 915 | |
| 916 | int rndis_set_param_vendor(u8 configNr, u32 vendorID, const char *vendorDescr) |
| 917 | { |
| 918 | pr_debug("%s:\n", __func__); |
| 919 | if (!vendorDescr) return -1; |
| 920 | if (configNr >= RNDIS_MAX_CONFIGS) return -1; |
| 921 | |
| 922 | rndis_per_dev_params[configNr].vendorID = vendorID; |
| 923 | rndis_per_dev_params[configNr].vendorDescr = vendorDescr; |
| 924 | |
| 925 | return 0; |
| 926 | } |
| 927 | |
| 928 | int rndis_set_param_medium(u8 configNr, u32 medium, u32 speed) |
| 929 | { |
| 930 | pr_debug("%s: %u %u\n", __func__, medium, speed); |
| 931 | if (configNr >= RNDIS_MAX_CONFIGS) return -1; |
| 932 | |
| 933 | rndis_per_dev_params[configNr].medium = medium; |
| 934 | rndis_per_dev_params[configNr].speed = speed; |
| 935 | |
| 936 | return 0; |
| 937 | } |
| 938 | |
| 939 | void rndis_add_hdr(struct sk_buff *skb) |
| 940 | { |
| 941 | struct rndis_packet_msg_type *header; |
| 942 | |
| 943 | if (!skb) |
| 944 | return; |
| 945 | header = (void *)skb_push(skb, sizeof(*header)); |
| 946 | memset(header, 0, sizeof *header); |
| 947 | header->MessageType = cpu_to_le32(RNDIS_MSG_PACKET); |
| 948 | header->MessageLength = cpu_to_le32(skb->len); |
| 949 | header->DataOffset = cpu_to_le32(36); |
| 950 | header->DataLength = cpu_to_le32(skb->len - sizeof(*header)); |
| 951 | } |
| 952 | |
| 953 | void rndis_free_response(int configNr, u8 *buf) |
| 954 | { |
| 955 | rndis_resp_t *r; |
| 956 | struct list_head *act, *tmp; |
| 957 | |
| 958 | list_for_each_safe(act, tmp, |
| 959 | &(rndis_per_dev_params[configNr].resp_queue)) |
| 960 | { |
| 961 | r = list_entry(act, rndis_resp_t, list); |
| 962 | if (r && r->buf == buf) { |
| 963 | list_del(&r->list); |
| 964 | kfree(r); |
| 965 | } |
| 966 | } |
| 967 | } |
| 968 | |
| 969 | u8 *rndis_get_next_response(int configNr, u32 *length) |
| 970 | { |
| 971 | rndis_resp_t *r; |
| 972 | struct list_head *act, *tmp; |
| 973 | |
| 974 | if (!length) return NULL; |
| 975 | |
| 976 | list_for_each_safe(act, tmp, |
| 977 | &(rndis_per_dev_params[configNr].resp_queue)) |
| 978 | { |
| 979 | r = list_entry(act, rndis_resp_t, list); |
| 980 | if (!r->send) { |
| 981 | r->send = 1; |
| 982 | *length = r->length; |
| 983 | return r->buf; |
| 984 | } |
| 985 | } |
| 986 | |
| 987 | return NULL; |
| 988 | } |
| 989 | |
| 990 | static rndis_resp_t *rndis_add_response(int configNr, u32 length) |
| 991 | { |
| 992 | rndis_resp_t *r; |
| 993 | |
| 994 | /* NOTE: this gets copied into ether.c USB_BUFSIZ bytes ... */ |
| 995 | r = kmalloc(sizeof(rndis_resp_t) + length, GFP_ATOMIC); |
| 996 | if (!r) return NULL; |
| 997 | |
| 998 | r->buf = (u8 *)(r + 1); |
| 999 | r->length = length; |
| 1000 | r->send = 0; |
| 1001 | |
| 1002 | list_add_tail(&r->list, |
| 1003 | &(rndis_per_dev_params[configNr].resp_queue)); |
| 1004 | return r; |
| 1005 | } |
| 1006 | |
| 1007 | int rndis_rm_hdr(struct gether *port, |
| 1008 | struct sk_buff *skb, |
| 1009 | struct sk_buff_head *list) |
| 1010 | { |
| 1011 | /* tmp points to a struct rndis_packet_msg_type */ |
| 1012 | __le32 *tmp = (void *)skb->data; |
| 1013 | |
| 1014 | /* MessageType, MessageLength */ |
| 1015 | if (cpu_to_le32(RNDIS_MSG_PACKET) |
| 1016 | != get_unaligned(tmp++)) { |
| 1017 | dev_kfree_skb_any(skb); |
| 1018 | return -EINVAL; |
| 1019 | } |
| 1020 | tmp++; |
| 1021 | |
| 1022 | /* DataOffset, DataLength */ |
| 1023 | if (!skb_pull(skb, get_unaligned_le32(tmp++) + 8)) { |
| 1024 | dev_kfree_skb_any(skb); |
| 1025 | return -EOVERFLOW; |
| 1026 | } |
| 1027 | skb_trim(skb, get_unaligned_le32(tmp++)); |
| 1028 | |
| 1029 | skb_queue_tail(list, skb); |
| 1030 | return 0; |
| 1031 | } |
| 1032 | |
| 1033 | #ifdef CONFIG_USB_GADGET_DEBUG_FILES |
| 1034 | |
| 1035 | static int rndis_proc_show(struct seq_file *m, void *v) |
| 1036 | { |
| 1037 | rndis_params *param = m->private; |
| 1038 | |
| 1039 | seq_printf(m, |
| 1040 | "Config Nr. %d\n" |
| 1041 | "used : %s\n" |
| 1042 | "state : %s\n" |
| 1043 | "medium : 0x%08X\n" |
| 1044 | "speed : %d\n" |
| 1045 | "cable : %s\n" |
| 1046 | "vendor ID : 0x%08X\n" |
| 1047 | "vendor : %s\n", |
| 1048 | param->confignr, (param->used) ? "y" : "n", |
| 1049 | ({ char *s = "?"; |
| 1050 | switch (param->state) { |
| 1051 | case RNDIS_UNINITIALIZED: |
| 1052 | s = "RNDIS_UNINITIALIZED"; break; |
| 1053 | case RNDIS_INITIALIZED: |
| 1054 | s = "RNDIS_INITIALIZED"; break; |
| 1055 | case RNDIS_DATA_INITIALIZED: |
| 1056 | s = "RNDIS_DATA_INITIALIZED"; break; |
| 1057 | }; s; }), |
| 1058 | param->medium, |
| 1059 | (param->media_state) ? 0 : param->speed*100, |
| 1060 | (param->media_state) ? "disconnected" : "connected", |
| 1061 | param->vendorID, param->vendorDescr); |
| 1062 | return 0; |
| 1063 | } |
| 1064 | |
| 1065 | static ssize_t rndis_proc_write(struct file *file, const char __user *buffer, |
| 1066 | size_t count, loff_t *ppos) |
| 1067 | { |
Al Viro | 496ad9a | 2013-01-23 17:07:38 -0500 | [diff] [blame] | 1068 | rndis_params *p = PDE(file_inode(file))->data; |
Sebastian Andrzej Siewior | e220ff7 | 2012-09-06 20:11:06 +0200 | [diff] [blame] | 1069 | u32 speed = 0; |
| 1070 | int i, fl_speed = 0; |
| 1071 | |
| 1072 | for (i = 0; i < count; i++) { |
| 1073 | char c; |
| 1074 | if (get_user(c, buffer)) |
| 1075 | return -EFAULT; |
| 1076 | switch (c) { |
| 1077 | case '0': |
| 1078 | case '1': |
| 1079 | case '2': |
| 1080 | case '3': |
| 1081 | case '4': |
| 1082 | case '5': |
| 1083 | case '6': |
| 1084 | case '7': |
| 1085 | case '8': |
| 1086 | case '9': |
| 1087 | fl_speed = 1; |
| 1088 | speed = speed * 10 + c - '0'; |
| 1089 | break; |
| 1090 | case 'C': |
| 1091 | case 'c': |
| 1092 | rndis_signal_connect(p->confignr); |
| 1093 | break; |
| 1094 | case 'D': |
| 1095 | case 'd': |
| 1096 | rndis_signal_disconnect(p->confignr); |
| 1097 | break; |
| 1098 | default: |
| 1099 | if (fl_speed) p->speed = speed; |
| 1100 | else pr_debug("%c is not valid\n", c); |
| 1101 | break; |
| 1102 | } |
| 1103 | |
| 1104 | buffer++; |
| 1105 | } |
| 1106 | |
| 1107 | return count; |
| 1108 | } |
| 1109 | |
| 1110 | static int rndis_proc_open(struct inode *inode, struct file *file) |
| 1111 | { |
| 1112 | return single_open(file, rndis_proc_show, PDE(inode)->data); |
| 1113 | } |
| 1114 | |
| 1115 | static const struct file_operations rndis_proc_fops = { |
| 1116 | .owner = THIS_MODULE, |
| 1117 | .open = rndis_proc_open, |
| 1118 | .read = seq_read, |
| 1119 | .llseek = seq_lseek, |
| 1120 | .release = single_release, |
| 1121 | .write = rndis_proc_write, |
| 1122 | }; |
| 1123 | |
| 1124 | #define NAME_TEMPLATE "driver/rndis-%03d" |
| 1125 | |
| 1126 | static struct proc_dir_entry *rndis_connect_state [RNDIS_MAX_CONFIGS]; |
| 1127 | |
| 1128 | #endif /* CONFIG_USB_GADGET_DEBUG_FILES */ |
| 1129 | |
| 1130 | |
| 1131 | int rndis_init(void) |
| 1132 | { |
| 1133 | u8 i; |
| 1134 | |
| 1135 | for (i = 0; i < RNDIS_MAX_CONFIGS; i++) { |
| 1136 | #ifdef CONFIG_USB_GADGET_DEBUG_FILES |
| 1137 | char name [20]; |
| 1138 | |
| 1139 | sprintf(name, NAME_TEMPLATE, i); |
| 1140 | rndis_connect_state[i] = proc_create_data(name, 0660, NULL, |
| 1141 | &rndis_proc_fops, |
| 1142 | (void *)(rndis_per_dev_params + i)); |
| 1143 | if (!rndis_connect_state[i]) { |
| 1144 | pr_debug("%s: remove entries", __func__); |
| 1145 | while (i) { |
| 1146 | sprintf(name, NAME_TEMPLATE, --i); |
| 1147 | remove_proc_entry(name, NULL); |
| 1148 | } |
| 1149 | pr_debug("\n"); |
| 1150 | return -EIO; |
| 1151 | } |
| 1152 | #endif |
| 1153 | rndis_per_dev_params[i].confignr = i; |
| 1154 | rndis_per_dev_params[i].used = 0; |
| 1155 | rndis_per_dev_params[i].state = RNDIS_UNINITIALIZED; |
| 1156 | rndis_per_dev_params[i].media_state |
| 1157 | = RNDIS_MEDIA_STATE_DISCONNECTED; |
| 1158 | INIT_LIST_HEAD(&(rndis_per_dev_params[i].resp_queue)); |
| 1159 | } |
| 1160 | |
| 1161 | return 0; |
| 1162 | } |
| 1163 | |
| 1164 | void rndis_exit(void) |
| 1165 | { |
| 1166 | #ifdef CONFIG_USB_GADGET_DEBUG_FILES |
| 1167 | u8 i; |
| 1168 | char name[20]; |
| 1169 | |
| 1170 | for (i = 0; i < RNDIS_MAX_CONFIGS; i++) { |
| 1171 | sprintf(name, NAME_TEMPLATE, i); |
| 1172 | remove_proc_entry(name, NULL); |
| 1173 | } |
| 1174 | #endif |
| 1175 | } |