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 #include <linux/module.h> 20 #include <linux/init.h> 21 #include <linux/netdevice.h> 22 #include <linux/etherdevice.h> 23 #include <linux/ethtool.h> 24 #include <linux/workqueue.h> 25 #include <linux/slab.h> 26 #include <linux/mii.h> 27 #include <linux/usb.h> 28 #include <linux/usb/cdc.h> 29 #include <linux/usb/usbnet.h> 30 #include <linux/usb/rndis_host.h> 31 32 33 /* 34 * RNDIS is NDIS remoted over USB. It's a MSFT variant of CDC ACM ... of 35 * course ACM was intended for modems, not Ethernet links! USB's standard 36 * for Ethernet links is "CDC Ethernet", which is significantly simpler. 37 * 38 * NOTE that Microsoft's "RNDIS 1.0" specification is incomplete. Issues 39 * include: 40 * - Power management in particular relies on information that's scattered 41 * through other documentation, and which is incomplete or incorrect even 42 * there. 43 * - There are various undocumented protocol requirements, such as the 44 * need to send unused garbage in control-OUT messages. 45 * - In some cases, MS-Windows will emit undocumented requests; this 46 * matters more to peripheral implementations than host ones. 47 * 48 * Moreover there's a no-open-specs variant of RNDIS called "ActiveSync". 49 * 50 * For these reasons and others, ** USE OF RNDIS IS STRONGLY DISCOURAGED ** in 51 * favor of such non-proprietary alternatives as CDC Ethernet or the newer (and 52 * currently rare) "Ethernet Emulation Model" (EEM). 53 */ 54 55 /* 56 * RNDIS notifications from device: command completion; "reverse" 57 * keepalives; etc 58 */ 59 void rndis_status(struct usbnet *dev, struct urb *urb) 60 { 61 netdev_dbg(dev->net, "rndis status urb, len %d stat %d\n", 62 urb->actual_length, urb->status); 63 // FIXME for keepalives, respond immediately (asynchronously) 64 // if not an RNDIS status, do like cdc_status(dev,urb) does 65 } 66 EXPORT_SYMBOL_GPL(rndis_status); 67 68 /* 69 * RNDIS indicate messages. 70 */ 71 static void rndis_msg_indicate(struct usbnet *dev, struct rndis_indicate *msg, 72 int buflen) 73 { 74 struct cdc_state *info = (void *)&dev->data; 75 struct device *udev = &info->control->dev; 76 77 if (dev->driver_info->indication) { 78 dev->driver_info->indication(dev, msg, buflen); 79 } else { 80 switch (msg->status) { 81 case RNDIS_STATUS_MEDIA_CONNECT: 82 dev_info(udev, "rndis media connect\n"); 83 break; 84 case RNDIS_STATUS_MEDIA_DISCONNECT: 85 dev_info(udev, "rndis media disconnect\n"); 86 break; 87 default: 88 dev_info(udev, "rndis indication: 0x%08x\n", 89 le32_to_cpu(msg->status)); 90 } 91 } 92 } 93 94 /* 95 * RPC done RNDIS-style. Caller guarantees: 96 * - message is properly byteswapped 97 * - there's no other request pending 98 * - buf can hold up to 1KB response (required by RNDIS spec) 99 * On return, the first few entries are already byteswapped. 100 * 101 * Call context is likely probe(), before interface name is known, 102 * which is why we won't try to use it in the diagnostics. 103 */ 104 int rndis_command(struct usbnet *dev, struct rndis_msg_hdr *buf, int buflen) 105 { 106 struct cdc_state *info = (void *) &dev->data; 107 struct usb_cdc_notification notification; 108 int master_ifnum; 109 int retval; 110 int partial; 111 unsigned count; 112 __le32 rsp; 113 u32 xid = 0, msg_len, request_id; 114 115 /* REVISIT when this gets called from contexts other than probe() or 116 * disconnect(): either serialize, or dispatch responses on xid 117 */ 118 119 /* Issue the request; xid is unique, don't bother byteswapping it */ 120 if (likely(buf->msg_type != RNDIS_MSG_HALT && 121 buf->msg_type != RNDIS_MSG_RESET)) { 122 xid = dev->xid++; 123 if (!xid) 124 xid = dev->xid++; 125 buf->request_id = (__force __le32) xid; 126 } 127 master_ifnum = info->control->cur_altsetting->desc.bInterfaceNumber; 128 retval = usb_control_msg(dev->udev, 129 usb_sndctrlpipe(dev->udev, 0), 130 USB_CDC_SEND_ENCAPSULATED_COMMAND, 131 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 132 0, master_ifnum, 133 buf, le32_to_cpu(buf->msg_len), 134 RNDIS_CONTROL_TIMEOUT_MS); 135 if (unlikely(retval < 0 || xid == 0)) 136 return retval; 137 138 /* Some devices don't respond on the control channel until 139 * polled on the status channel, so do that first. */ 140 if (dev->driver_info->data & RNDIS_DRIVER_DATA_POLL_STATUS) { 141 retval = usb_interrupt_msg( 142 dev->udev, 143 usb_rcvintpipe(dev->udev, 144 dev->status->desc.bEndpointAddress), 145 ¬ification, sizeof(notification), &partial, 146 RNDIS_CONTROL_TIMEOUT_MS); 147 if (unlikely(retval < 0)) 148 return retval; 149 } 150 151 /* Poll the control channel; the request probably completed immediately */ 152 rsp = buf->msg_type | RNDIS_MSG_COMPLETION; 153 for (count = 0; count < 10; count++) { 154 memset(buf, 0, CONTROL_BUFFER_SIZE); 155 retval = usb_control_msg(dev->udev, 156 usb_rcvctrlpipe(dev->udev, 0), 157 USB_CDC_GET_ENCAPSULATED_RESPONSE, 158 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, 159 0, master_ifnum, 160 buf, buflen, 161 RNDIS_CONTROL_TIMEOUT_MS); 162 if (likely(retval >= 8)) { 163 msg_len = le32_to_cpu(buf->msg_len); 164 request_id = (__force u32) buf->request_id; 165 if (likely(buf->msg_type == rsp)) { 166 if (likely(request_id == xid)) { 167 if (unlikely(rsp == RNDIS_MSG_RESET_C)) 168 return 0; 169 if (likely(RNDIS_STATUS_SUCCESS 170 == buf->status)) 171 return 0; 172 dev_dbg(&info->control->dev, 173 "rndis reply status %08x\n", 174 le32_to_cpu(buf->status)); 175 return -EL3RST; 176 } 177 dev_dbg(&info->control->dev, 178 "rndis reply id %d expected %d\n", 179 request_id, xid); 180 /* then likely retry */ 181 } else switch (buf->msg_type) { 182 case RNDIS_MSG_INDICATE: /* fault/event */ 183 rndis_msg_indicate(dev, (void *)buf, buflen); 184 185 break; 186 case RNDIS_MSG_KEEPALIVE: { /* ping */ 187 struct rndis_keepalive_c *msg = (void *)buf; 188 189 msg->msg_type = RNDIS_MSG_KEEPALIVE_C; 190 msg->msg_len = cpu_to_le32(sizeof *msg); 191 msg->status = RNDIS_STATUS_SUCCESS; 192 retval = usb_control_msg(dev->udev, 193 usb_sndctrlpipe(dev->udev, 0), 194 USB_CDC_SEND_ENCAPSULATED_COMMAND, 195 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 196 0, master_ifnum, 197 msg, sizeof *msg, 198 RNDIS_CONTROL_TIMEOUT_MS); 199 if (unlikely(retval < 0)) 200 dev_dbg(&info->control->dev, 201 "rndis keepalive err %d\n", 202 retval); 203 } 204 break; 205 default: 206 dev_dbg(&info->control->dev, 207 "unexpected rndis msg %08x len %d\n", 208 le32_to_cpu(buf->msg_type), msg_len); 209 } 210 } else { 211 /* device probably issued a protocol stall; ignore */ 212 dev_dbg(&info->control->dev, 213 "rndis response error, code %d\n", retval); 214 } 215 msleep(20); 216 } 217 dev_dbg(&info->control->dev, "rndis response timeout\n"); 218 return -ETIMEDOUT; 219 } 220 EXPORT_SYMBOL_GPL(rndis_command); 221 222 /* 223 * rndis_query: 224 * 225 * Performs a query for @oid along with 0 or more bytes of payload as 226 * specified by @in_len. If @reply_len is not set to -1 then the reply 227 * length is checked against this value, resulting in an error if it 228 * doesn't match. 229 * 230 * NOTE: Adding a payload exactly or greater than the size of the expected 231 * response payload is an evident requirement MSFT added for ActiveSync. 232 * 233 * The only exception is for OIDs that return a variably sized response, 234 * in which case no payload should be added. This undocumented (and 235 * nonsensical!) issue was found by sniffing protocol requests from the 236 * ActiveSync 4.1 Windows driver. 237 */ 238 static int rndis_query(struct usbnet *dev, struct usb_interface *intf, 239 void *buf, __le32 oid, u32 in_len, 240 void **reply, int *reply_len) 241 { 242 int retval; 243 union { 244 void *buf; 245 struct rndis_msg_hdr *header; 246 struct rndis_query *get; 247 struct rndis_query_c *get_c; 248 } u; 249 u32 off, len; 250 251 u.buf = buf; 252 253 memset(u.get, 0, sizeof *u.get + in_len); 254 u.get->msg_type = RNDIS_MSG_QUERY; 255 u.get->msg_len = cpu_to_le32(sizeof *u.get + in_len); 256 u.get->oid = oid; 257 u.get->len = cpu_to_le32(in_len); 258 u.get->offset = cpu_to_le32(20); 259 260 retval = rndis_command(dev, u.header, CONTROL_BUFFER_SIZE); 261 if (unlikely(retval < 0)) { 262 dev_err(&intf->dev, "RNDIS_MSG_QUERY(0x%08x) failed, %d\n", 263 oid, retval); 264 return retval; 265 } 266 267 off = le32_to_cpu(u.get_c->offset); 268 len = le32_to_cpu(u.get_c->len); 269 if (unlikely((8 + off + len) > CONTROL_BUFFER_SIZE)) 270 goto response_error; 271 272 if (*reply_len != -1 && len != *reply_len) 273 goto response_error; 274 275 *reply = (unsigned char *) &u.get_c->request_id + off; 276 *reply_len = len; 277 278 return retval; 279 280 response_error: 281 dev_err(&intf->dev, "RNDIS_MSG_QUERY(0x%08x) " 282 "invalid response - off %d len %d\n", 283 oid, off, len); 284 return -EDOM; 285 } 286 287 /* same as usbnet_netdev_ops but MTU change not allowed */ 288 static const struct net_device_ops rndis_netdev_ops = { 289 .ndo_open = usbnet_open, 290 .ndo_stop = usbnet_stop, 291 .ndo_start_xmit = usbnet_start_xmit, 292 .ndo_tx_timeout = usbnet_tx_timeout, 293 .ndo_set_mac_address = eth_mac_addr, 294 .ndo_validate_addr = eth_validate_addr, 295 }; 296 297 int 298 generic_rndis_bind(struct usbnet *dev, struct usb_interface *intf, int flags) 299 { 300 int retval; 301 struct net_device *net = dev->net; 302 struct cdc_state *info = (void *) &dev->data; 303 union { 304 void *buf; 305 struct rndis_msg_hdr *header; 306 struct rndis_init *init; 307 struct rndis_init_c *init_c; 308 struct rndis_query *get; 309 struct rndis_query_c *get_c; 310 struct rndis_set *set; 311 struct rndis_set_c *set_c; 312 struct rndis_halt *halt; 313 } u; 314 u32 tmp; 315 __le32 phym_unspec, *phym; 316 int reply_len; 317 unsigned char *bp; 318 319 /* we can't rely on i/o from stack working, or stack allocation */ 320 u.buf = kmalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL); 321 if (!u.buf) 322 return -ENOMEM; 323 retval = usbnet_generic_cdc_bind(dev, intf); 324 if (retval < 0) 325 goto fail; 326 327 u.init->msg_type = RNDIS_MSG_INIT; 328 u.init->msg_len = cpu_to_le32(sizeof *u.init); 329 u.init->major_version = cpu_to_le32(1); 330 u.init->minor_version = cpu_to_le32(0); 331 332 /* max transfer (in spec) is 0x4000 at full speed, but for 333 * TX we'll stick to one Ethernet packet plus RNDIS framing. 334 * For RX we handle drivers that zero-pad to end-of-packet. 335 * Don't let userspace change these settings. 336 * 337 * NOTE: there still seems to be wierdness here, as if we need 338 * to do some more things to make sure WinCE targets accept this. 339 * They default to jumbograms of 8KB or 16KB, which is absurd 340 * for such low data rates and which is also more than Linux 341 * can usually expect to allocate for SKB data... 342 */ 343 net->hard_header_len += sizeof (struct rndis_data_hdr); 344 dev->hard_mtu = net->mtu + net->hard_header_len; 345 346 dev->maxpacket = usb_maxpacket(dev->udev, dev->out, 1); 347 if (dev->maxpacket == 0) { 348 netif_dbg(dev, probe, dev->net, 349 "dev->maxpacket can't be 0\n"); 350 retval = -EINVAL; 351 goto fail_and_release; 352 } 353 354 dev->rx_urb_size = dev->hard_mtu + (dev->maxpacket + 1); 355 dev->rx_urb_size &= ~(dev->maxpacket - 1); 356 u.init->max_transfer_size = cpu_to_le32(dev->rx_urb_size); 357 358 net->netdev_ops = &rndis_netdev_ops; 359 360 retval = rndis_command(dev, u.header, CONTROL_BUFFER_SIZE); 361 if (unlikely(retval < 0)) { 362 /* it might not even be an RNDIS device!! */ 363 dev_err(&intf->dev, "RNDIS init failed, %d\n", retval); 364 goto fail_and_release; 365 } 366 tmp = le32_to_cpu(u.init_c->max_transfer_size); 367 if (tmp < dev->hard_mtu) { 368 if (tmp <= net->hard_header_len) { 369 dev_err(&intf->dev, 370 "dev can't take %u byte packets (max %u)\n", 371 dev->hard_mtu, tmp); 372 retval = -EINVAL; 373 goto halt_fail_and_release; 374 } 375 dev_warn(&intf->dev, 376 "dev can't take %u byte packets (max %u), " 377 "adjusting MTU to %u\n", 378 dev->hard_mtu, tmp, tmp - net->hard_header_len); 379 dev->hard_mtu = tmp; 380 net->mtu = dev->hard_mtu - net->hard_header_len; 381 } 382 383 /* REVISIT: peripheral "alignment" request is ignored ... */ 384 dev_dbg(&intf->dev, 385 "hard mtu %u (%u from dev), rx buflen %Zu, align %d\n", 386 dev->hard_mtu, tmp, dev->rx_urb_size, 387 1 << le32_to_cpu(u.init_c->packet_alignment)); 388 389 /* module has some device initialization code needs to be done right 390 * after RNDIS_INIT */ 391 if (dev->driver_info->early_init && 392 dev->driver_info->early_init(dev) != 0) 393 goto halt_fail_and_release; 394 395 /* Check physical medium */ 396 phym = NULL; 397 reply_len = sizeof *phym; 398 retval = rndis_query(dev, intf, u.buf, OID_GEN_PHYSICAL_MEDIUM, 399 0, (void **) &phym, &reply_len); 400 if (retval != 0 || !phym) { 401 /* OID is optional so don't fail here. */ 402 phym_unspec = RNDIS_PHYSICAL_MEDIUM_UNSPECIFIED; 403 phym = &phym_unspec; 404 } 405 if ((flags & FLAG_RNDIS_PHYM_WIRELESS) && 406 *phym != RNDIS_PHYSICAL_MEDIUM_WIRELESS_LAN) { 407 netif_dbg(dev, probe, dev->net, 408 "driver requires wireless physical medium, but device is not\n"); 409 retval = -ENODEV; 410 goto halt_fail_and_release; 411 } 412 if ((flags & FLAG_RNDIS_PHYM_NOT_WIRELESS) && 413 *phym == RNDIS_PHYSICAL_MEDIUM_WIRELESS_LAN) { 414 netif_dbg(dev, probe, dev->net, 415 "driver requires non-wireless physical medium, but device is wireless.\n"); 416 retval = -ENODEV; 417 goto halt_fail_and_release; 418 } 419 420 /* Get designated host ethernet address */ 421 reply_len = ETH_ALEN; 422 retval = rndis_query(dev, intf, u.buf, OID_802_3_PERMANENT_ADDRESS, 423 48, (void **) &bp, &reply_len); 424 if (unlikely(retval< 0)) { 425 dev_err(&intf->dev, "rndis get ethaddr, %d\n", retval); 426 goto halt_fail_and_release; 427 } 428 memcpy(net->dev_addr, bp, ETH_ALEN); 429 memcpy(net->perm_addr, bp, ETH_ALEN); 430 431 /* set a nonzero filter to enable data transfers */ 432 memset(u.set, 0, sizeof *u.set); 433 u.set->msg_type = RNDIS_MSG_SET; 434 u.set->msg_len = cpu_to_le32(4 + sizeof *u.set); 435 u.set->oid = OID_GEN_CURRENT_PACKET_FILTER; 436 u.set->len = cpu_to_le32(4); 437 u.set->offset = cpu_to_le32((sizeof *u.set) - 8); 438 *(__le32 *)(u.buf + sizeof *u.set) = RNDIS_DEFAULT_FILTER; 439 440 retval = rndis_command(dev, u.header, CONTROL_BUFFER_SIZE); 441 if (unlikely(retval < 0)) { 442 dev_err(&intf->dev, "rndis set packet filter, %d\n", retval); 443 goto halt_fail_and_release; 444 } 445 446 retval = 0; 447 448 kfree(u.buf); 449 return retval; 450 451 halt_fail_and_release: 452 memset(u.halt, 0, sizeof *u.halt); 453 u.halt->msg_type = RNDIS_MSG_HALT; 454 u.halt->msg_len = cpu_to_le32(sizeof *u.halt); 455 (void) rndis_command(dev, (void *)u.halt, CONTROL_BUFFER_SIZE); 456 fail_and_release: 457 usb_set_intfdata(info->data, NULL); 458 usb_driver_release_interface(driver_of(intf), info->data); 459 info->data = NULL; 460 fail: 461 kfree(u.buf); 462 return retval; 463 } 464 EXPORT_SYMBOL_GPL(generic_rndis_bind); 465 466 static int rndis_bind(struct usbnet *dev, struct usb_interface *intf) 467 { 468 return generic_rndis_bind(dev, intf, FLAG_RNDIS_PHYM_NOT_WIRELESS); 469 } 470 471 void rndis_unbind(struct usbnet *dev, struct usb_interface *intf) 472 { 473 struct rndis_halt *halt; 474 475 /* try to clear any rndis state/activity (no i/o from stack!) */ 476 halt = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL); 477 if (halt) { 478 halt->msg_type = RNDIS_MSG_HALT; 479 halt->msg_len = cpu_to_le32(sizeof *halt); 480 (void) rndis_command(dev, (void *)halt, CONTROL_BUFFER_SIZE); 481 kfree(halt); 482 } 483 484 usbnet_cdc_unbind(dev, intf); 485 } 486 EXPORT_SYMBOL_GPL(rndis_unbind); 487 488 /* 489 * DATA -- host must not write zlps 490 */ 491 int rndis_rx_fixup(struct usbnet *dev, struct sk_buff *skb) 492 { 493 /* peripheral may have batched packets to us... */ 494 while (likely(skb->len)) { 495 struct rndis_data_hdr *hdr = (void *)skb->data; 496 struct sk_buff *skb2; 497 u32 msg_len, data_offset, data_len; 498 499 msg_len = le32_to_cpu(hdr->msg_len); 500 data_offset = le32_to_cpu(hdr->data_offset); 501 data_len = le32_to_cpu(hdr->data_len); 502 503 /* don't choke if we see oob, per-packet data, etc */ 504 if (unlikely(hdr->msg_type != RNDIS_MSG_PACKET || 505 skb->len < msg_len || 506 (data_offset + data_len + 8) > msg_len)) { 507 dev->net->stats.rx_frame_errors++; 508 netdev_dbg(dev->net, "bad rndis message %d/%d/%d/%d, len %d\n", 509 le32_to_cpu(hdr->msg_type), 510 msg_len, data_offset, data_len, skb->len); 511 return 0; 512 } 513 skb_pull(skb, 8 + data_offset); 514 515 /* at most one packet left? */ 516 if (likely((data_len - skb->len) <= sizeof *hdr)) { 517 skb_trim(skb, data_len); 518 break; 519 } 520 521 /* try to return all the packets in the batch */ 522 skb2 = skb_clone(skb, GFP_ATOMIC); 523 if (unlikely(!skb2)) 524 break; 525 skb_pull(skb, msg_len - sizeof *hdr); 526 skb_trim(skb2, data_len); 527 usbnet_skb_return(dev, skb2); 528 } 529 530 /* caller will usbnet_skb_return the remaining packet */ 531 return 1; 532 } 533 EXPORT_SYMBOL_GPL(rndis_rx_fixup); 534 535 struct sk_buff * 536 rndis_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags) 537 { 538 struct rndis_data_hdr *hdr; 539 struct sk_buff *skb2; 540 unsigned len = skb->len; 541 542 if (likely(!skb_cloned(skb))) { 543 int room = skb_headroom(skb); 544 545 /* enough head room as-is? */ 546 if (unlikely((sizeof *hdr) <= room)) 547 goto fill; 548 549 /* enough room, but needs to be readjusted? */ 550 room += skb_tailroom(skb); 551 if (likely((sizeof *hdr) <= room)) { 552 skb->data = memmove(skb->head + sizeof *hdr, 553 skb->data, len); 554 skb_set_tail_pointer(skb, len); 555 goto fill; 556 } 557 } 558 559 /* create a new skb, with the correct size (and tailpad) */ 560 skb2 = skb_copy_expand(skb, sizeof *hdr, 1, flags); 561 dev_kfree_skb_any(skb); 562 if (unlikely(!skb2)) 563 return skb2; 564 skb = skb2; 565 566 /* fill out the RNDIS header. we won't bother trying to batch 567 * packets; Linux minimizes wasted bandwidth through tx queues. 568 */ 569 fill: 570 hdr = (void *) __skb_push(skb, sizeof *hdr); 571 memset(hdr, 0, sizeof *hdr); 572 hdr->msg_type = RNDIS_MSG_PACKET; 573 hdr->msg_len = cpu_to_le32(skb->len); 574 hdr->data_offset = cpu_to_le32(sizeof(*hdr) - 8); 575 hdr->data_len = cpu_to_le32(len); 576 577 /* FIXME make the last packet always be short ... */ 578 return skb; 579 } 580 EXPORT_SYMBOL_GPL(rndis_tx_fixup); 581 582 583 static const struct driver_info rndis_info = { 584 .description = "RNDIS device", 585 .flags = FLAG_ETHER | FLAG_POINTTOPOINT | FLAG_FRAMING_RN | FLAG_NO_SETINT, 586 .bind = rndis_bind, 587 .unbind = rndis_unbind, 588 .status = rndis_status, 589 .rx_fixup = rndis_rx_fixup, 590 .tx_fixup = rndis_tx_fixup, 591 }; 592 593 static const struct driver_info rndis_poll_status_info = { 594 .description = "RNDIS device (poll status before control)", 595 .flags = FLAG_ETHER | FLAG_POINTTOPOINT | FLAG_FRAMING_RN | FLAG_NO_SETINT, 596 .data = RNDIS_DRIVER_DATA_POLL_STATUS, 597 .bind = rndis_bind, 598 .unbind = rndis_unbind, 599 .status = rndis_status, 600 .rx_fixup = rndis_rx_fixup, 601 .tx_fixup = rndis_tx_fixup, 602 }; 603 604 /*-------------------------------------------------------------------------*/ 605 606 static const struct usb_device_id products [] = { 607 { 608 /* 2Wire HomePortal 1000SW */ 609 USB_DEVICE_AND_INTERFACE_INFO(0x1630, 0x0042, 610 USB_CLASS_COMM, 2 /* ACM */, 0x0ff), 611 .driver_info = (unsigned long) &rndis_poll_status_info, 612 }, { 613 /* RNDIS is MSFT's un-official variant of CDC ACM */ 614 USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff), 615 .driver_info = (unsigned long) &rndis_info, 616 }, { 617 /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */ 618 USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1), 619 .driver_info = (unsigned long) &rndis_poll_status_info, 620 }, { 621 /* RNDIS for tethering */ 622 USB_INTERFACE_INFO(USB_CLASS_WIRELESS_CONTROLLER, 1, 3), 623 .driver_info = (unsigned long) &rndis_info, 624 }, 625 { }, // END 626 }; 627 MODULE_DEVICE_TABLE(usb, products); 628 629 static struct usb_driver rndis_driver = { 630 .name = "rndis_host", 631 .id_table = products, 632 .probe = usbnet_probe, 633 .disconnect = usbnet_disconnect, 634 .suspend = usbnet_suspend, 635 .resume = usbnet_resume, 636 }; 637 638 static int __init rndis_init(void) 639 { 640 return usb_register(&rndis_driver); 641 } 642 module_init(rndis_init); 643 644 static void __exit rndis_exit(void) 645 { 646 usb_deregister(&rndis_driver); 647 } 648 module_exit(rndis_exit); 649 650 MODULE_AUTHOR("David Brownell"); 651 MODULE_DESCRIPTION("USB Host side RNDIS driver"); 652 MODULE_LICENSE("GPL"); 653