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, see <http://www.gnu.org/licenses/>. 17 */ 18 #include <linux/module.h> 19 #include <linux/netdevice.h> 20 #include <linux/etherdevice.h> 21 #include <linux/ethtool.h> 22 #include <linux/workqueue.h> 23 #include <linux/slab.h> 24 #include <linux/mii.h> 25 #include <linux/usb.h> 26 #include <linux/usb/cdc.h> 27 #include <linux/usb/usbnet.h> 28 #include <linux/usb/rndis_host.h> 29 30 31 /* 32 * RNDIS is NDIS remoted over USB. It's a MSFT variant of CDC ACM ... of 33 * course ACM was intended for modems, not Ethernet links! USB's standard 34 * for Ethernet links is "CDC Ethernet", which is significantly simpler. 35 * 36 * NOTE that Microsoft's "RNDIS 1.0" specification is incomplete. Issues 37 * include: 38 * - Power management in particular relies on information that's scattered 39 * through other documentation, and which is incomplete or incorrect even 40 * there. 41 * - There are various undocumented protocol requirements, such as the 42 * need to send unused garbage in control-OUT messages. 43 * - In some cases, MS-Windows will emit undocumented requests; this 44 * matters more to peripheral implementations than host ones. 45 * 46 * Moreover there's a no-open-specs variant of RNDIS called "ActiveSync". 47 * 48 * For these reasons and others, ** USE OF RNDIS IS STRONGLY DISCOURAGED ** in 49 * favor of such non-proprietary alternatives as CDC Ethernet or the newer (and 50 * currently rare) "Ethernet Emulation Model" (EEM). 51 */ 52 53 /* 54 * RNDIS notifications from device: command completion; "reverse" 55 * keepalives; etc 56 */ 57 void rndis_status(struct usbnet *dev, struct urb *urb) 58 { 59 netdev_dbg(dev->net, "rndis status urb, len %d stat %d\n", 60 urb->actual_length, urb->status); 61 // FIXME for keepalives, respond immediately (asynchronously) 62 // if not an RNDIS status, do like cdc_status(dev,urb) does 63 } 64 EXPORT_SYMBOL_GPL(rndis_status); 65 66 /* 67 * RNDIS indicate messages. 68 */ 69 static void rndis_msg_indicate(struct usbnet *dev, struct rndis_indicate *msg, 70 int buflen) 71 { 72 struct cdc_state *info = (void *)&dev->data; 73 struct device *udev = &info->control->dev; 74 75 if (dev->driver_info->indication) { 76 dev->driver_info->indication(dev, msg, buflen); 77 } else { 78 u32 status = le32_to_cpu(msg->status); 79 80 switch (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", status); 89 } 90 } 91 } 92 93 /* 94 * RPC done RNDIS-style. Caller guarantees: 95 * - message is properly byteswapped 96 * - there's no other request pending 97 * - buf can hold up to 1KB response (required by RNDIS spec) 98 * On return, the first few entries are already byteswapped. 99 * 100 * Call context is likely probe(), before interface name is known, 101 * which is why we won't try to use it in the diagnostics. 102 */ 103 int rndis_command(struct usbnet *dev, struct rndis_msg_hdr *buf, int buflen) 104 { 105 struct cdc_state *info = (void *) &dev->data; 106 struct usb_cdc_notification notification; 107 int master_ifnum; 108 int retval; 109 int partial; 110 unsigned count; 111 u32 xid = 0, msg_len, request_id, msg_type, rsp, 112 status; 113 114 /* REVISIT when this gets called from contexts other than probe() or 115 * disconnect(): either serialize, or dispatch responses on xid 116 */ 117 118 msg_type = le32_to_cpu(buf->msg_type); 119 120 /* Issue the request; xid is unique, don't bother byteswapping it */ 121 if (likely(msg_type != RNDIS_MSG_HALT && 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 = le32_to_cpu(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_type = le32_to_cpu(buf->msg_type); 164 msg_len = le32_to_cpu(buf->msg_len); 165 status = le32_to_cpu(buf->status); 166 request_id = (__force u32) buf->request_id; 167 if (likely(msg_type == rsp)) { 168 if (likely(request_id == xid)) { 169 if (unlikely(rsp == RNDIS_MSG_RESET_C)) 170 return 0; 171 if (likely(RNDIS_STATUS_SUCCESS == 172 status)) 173 return 0; 174 dev_dbg(&info->control->dev, 175 "rndis reply status %08x\n", 176 status); 177 return -EL3RST; 178 } 179 dev_dbg(&info->control->dev, 180 "rndis reply id %d expected %d\n", 181 request_id, xid); 182 /* then likely retry */ 183 } else switch (msg_type) { 184 case RNDIS_MSG_INDICATE: /* fault/event */ 185 rndis_msg_indicate(dev, (void *)buf, buflen); 186 break; 187 case RNDIS_MSG_KEEPALIVE: { /* ping */ 188 struct rndis_keepalive_c *msg = (void *)buf; 189 190 msg->msg_type = cpu_to_le32(RNDIS_MSG_KEEPALIVE_C); 191 msg->msg_len = cpu_to_le32(sizeof *msg); 192 msg->status = cpu_to_le32(RNDIS_STATUS_SUCCESS); 193 retval = usb_control_msg(dev->udev, 194 usb_sndctrlpipe(dev->udev, 0), 195 USB_CDC_SEND_ENCAPSULATED_COMMAND, 196 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 197 0, master_ifnum, 198 msg, sizeof *msg, 199 RNDIS_CONTROL_TIMEOUT_MS); 200 if (unlikely(retval < 0)) 201 dev_dbg(&info->control->dev, 202 "rndis keepalive err %d\n", 203 retval); 204 } 205 break; 206 default: 207 dev_dbg(&info->control->dev, 208 "unexpected rndis msg %08x len %d\n", 209 le32_to_cpu(buf->msg_type), msg_len); 210 } 211 } else { 212 /* device probably issued a protocol stall; ignore */ 213 dev_dbg(&info->control->dev, 214 "rndis response error, code %d\n", retval); 215 } 216 msleep(20); 217 } 218 dev_dbg(&info->control->dev, "rndis response timeout\n"); 219 return -ETIMEDOUT; 220 } 221 EXPORT_SYMBOL_GPL(rndis_command); 222 223 /* 224 * rndis_query: 225 * 226 * Performs a query for @oid along with 0 or more bytes of payload as 227 * specified by @in_len. If @reply_len is not set to -1 then the reply 228 * length is checked against this value, resulting in an error if it 229 * doesn't match. 230 * 231 * NOTE: Adding a payload exactly or greater than the size of the expected 232 * response payload is an evident requirement MSFT added for ActiveSync. 233 * 234 * The only exception is for OIDs that return a variably sized response, 235 * in which case no payload should be added. This undocumented (and 236 * nonsensical!) issue was found by sniffing protocol requests from the 237 * ActiveSync 4.1 Windows driver. 238 */ 239 static int rndis_query(struct usbnet *dev, struct usb_interface *intf, 240 void *buf, u32 oid, u32 in_len, 241 void **reply, int *reply_len) 242 { 243 int retval; 244 union { 245 void *buf; 246 struct rndis_msg_hdr *header; 247 struct rndis_query *get; 248 struct rndis_query_c *get_c; 249 } u; 250 u32 off, len; 251 252 u.buf = buf; 253 254 memset(u.get, 0, sizeof *u.get + in_len); 255 u.get->msg_type = cpu_to_le32(RNDIS_MSG_QUERY); 256 u.get->msg_len = cpu_to_le32(sizeof *u.get + in_len); 257 u.get->oid = cpu_to_le32(oid); 258 u.get->len = cpu_to_le32(in_len); 259 u.get->offset = cpu_to_le32(20); 260 261 retval = rndis_command(dev, u.header, CONTROL_BUFFER_SIZE); 262 if (unlikely(retval < 0)) { 263 dev_err(&intf->dev, "RNDIS_MSG_QUERY(0x%08x) failed, %d\n", 264 oid, retval); 265 return retval; 266 } 267 268 off = le32_to_cpu(u.get_c->offset); 269 len = le32_to_cpu(u.get_c->len); 270 if (unlikely((8 + off + len) > CONTROL_BUFFER_SIZE)) 271 goto response_error; 272 273 if (*reply_len != -1 && len != *reply_len) 274 goto response_error; 275 276 *reply = (unsigned char *) &u.get_c->request_id + off; 277 *reply_len = len; 278 279 return retval; 280 281 response_error: 282 dev_err(&intf->dev, "RNDIS_MSG_QUERY(0x%08x) " 283 "invalid response - off %d len %d\n", 284 oid, off, len); 285 return -EDOM; 286 } 287 288 /* same as usbnet_netdev_ops but MTU change not allowed */ 289 static const struct net_device_ops rndis_netdev_ops = { 290 .ndo_open = usbnet_open, 291 .ndo_stop = usbnet_stop, 292 .ndo_start_xmit = usbnet_start_xmit, 293 .ndo_tx_timeout = usbnet_tx_timeout, 294 .ndo_set_mac_address = eth_mac_addr, 295 .ndo_validate_addr = eth_validate_addr, 296 }; 297 298 int 299 generic_rndis_bind(struct usbnet *dev, struct usb_interface *intf, int flags) 300 { 301 int retval; 302 struct net_device *net = dev->net; 303 struct cdc_state *info = (void *) &dev->data; 304 union { 305 void *buf; 306 struct rndis_msg_hdr *header; 307 struct rndis_init *init; 308 struct rndis_init_c *init_c; 309 struct rndis_query *get; 310 struct rndis_query_c *get_c; 311 struct rndis_set *set; 312 struct rndis_set_c *set_c; 313 struct rndis_halt *halt; 314 } u; 315 u32 tmp; 316 __le32 phym_unspec, *phym; 317 int reply_len; 318 unsigned char *bp; 319 320 /* we can't rely on i/o from stack working, or stack allocation */ 321 u.buf = kmalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL); 322 if (!u.buf) 323 return -ENOMEM; 324 retval = usbnet_generic_cdc_bind(dev, intf); 325 if (retval < 0) 326 goto fail; 327 328 u.init->msg_type = cpu_to_le32(RNDIS_MSG_INIT); 329 u.init->msg_len = cpu_to_le32(sizeof *u.init); 330 u.init->major_version = cpu_to_le32(1); 331 u.init->minor_version = cpu_to_le32(0); 332 333 /* max transfer (in spec) is 0x4000 at full speed, but for 334 * TX we'll stick to one Ethernet packet plus RNDIS framing. 335 * For RX we handle drivers that zero-pad to end-of-packet. 336 * Don't let userspace change these settings. 337 * 338 * NOTE: there still seems to be wierdness here, as if we need 339 * to do some more things to make sure WinCE targets accept this. 340 * They default to jumbograms of 8KB or 16KB, which is absurd 341 * for such low data rates and which is also more than Linux 342 * can usually expect to allocate for SKB data... 343 */ 344 net->hard_header_len += sizeof (struct rndis_data_hdr); 345 dev->hard_mtu = net->mtu + net->hard_header_len; 346 347 dev->maxpacket = usb_maxpacket(dev->udev, dev->out, 1); 348 if (dev->maxpacket == 0) { 349 netif_dbg(dev, probe, dev->net, 350 "dev->maxpacket can't be 0\n"); 351 retval = -EINVAL; 352 goto fail_and_release; 353 } 354 355 dev->rx_urb_size = dev->hard_mtu + (dev->maxpacket + 1); 356 dev->rx_urb_size &= ~(dev->maxpacket - 1); 357 u.init->max_transfer_size = cpu_to_le32(dev->rx_urb_size); 358 359 net->netdev_ops = &rndis_netdev_ops; 360 361 retval = rndis_command(dev, u.header, CONTROL_BUFFER_SIZE); 362 if (unlikely(retval < 0)) { 363 /* it might not even be an RNDIS device!! */ 364 dev_err(&intf->dev, "RNDIS init failed, %d\n", retval); 365 goto fail_and_release; 366 } 367 tmp = le32_to_cpu(u.init_c->max_transfer_size); 368 if (tmp < dev->hard_mtu) { 369 if (tmp <= net->hard_header_len) { 370 dev_err(&intf->dev, 371 "dev can't take %u byte packets (max %u)\n", 372 dev->hard_mtu, tmp); 373 retval = -EINVAL; 374 goto halt_fail_and_release; 375 } 376 dev_warn(&intf->dev, 377 "dev can't take %u byte packets (max %u), " 378 "adjusting MTU to %u\n", 379 dev->hard_mtu, tmp, tmp - net->hard_header_len); 380 dev->hard_mtu = tmp; 381 net->mtu = dev->hard_mtu - net->hard_header_len; 382 } 383 384 /* REVISIT: peripheral "alignment" request is ignored ... */ 385 dev_dbg(&intf->dev, 386 "hard mtu %u (%u from dev), rx buflen %Zu, align %d\n", 387 dev->hard_mtu, tmp, dev->rx_urb_size, 388 1 << le32_to_cpu(u.init_c->packet_alignment)); 389 390 /* module has some device initialization code needs to be done right 391 * after RNDIS_INIT */ 392 if (dev->driver_info->early_init && 393 dev->driver_info->early_init(dev) != 0) 394 goto halt_fail_and_release; 395 396 /* Check physical medium */ 397 phym = NULL; 398 reply_len = sizeof *phym; 399 retval = rndis_query(dev, intf, u.buf, 400 RNDIS_OID_GEN_PHYSICAL_MEDIUM, 401 0, (void **) &phym, &reply_len); 402 if (retval != 0 || !phym) { 403 /* OID is optional so don't fail here. */ 404 phym_unspec = cpu_to_le32(RNDIS_PHYSICAL_MEDIUM_UNSPECIFIED); 405 phym = &phym_unspec; 406 } 407 if ((flags & FLAG_RNDIS_PHYM_WIRELESS) && 408 le32_to_cpup(phym) != RNDIS_PHYSICAL_MEDIUM_WIRELESS_LAN) { 409 netif_dbg(dev, probe, dev->net, 410 "driver requires wireless physical medium, but device is not\n"); 411 retval = -ENODEV; 412 goto halt_fail_and_release; 413 } 414 if ((flags & FLAG_RNDIS_PHYM_NOT_WIRELESS) && 415 le32_to_cpup(phym) == RNDIS_PHYSICAL_MEDIUM_WIRELESS_LAN) { 416 netif_dbg(dev, probe, dev->net, 417 "driver requires non-wireless physical medium, but device is wireless.\n"); 418 retval = -ENODEV; 419 goto halt_fail_and_release; 420 } 421 422 /* Get designated host ethernet address */ 423 reply_len = ETH_ALEN; 424 retval = rndis_query(dev, intf, u.buf, 425 RNDIS_OID_802_3_PERMANENT_ADDRESS, 426 48, (void **) &bp, &reply_len); 427 if (unlikely(retval< 0)) { 428 dev_err(&intf->dev, "rndis get ethaddr, %d\n", retval); 429 goto halt_fail_and_release; 430 } 431 memcpy(net->dev_addr, bp, ETH_ALEN); 432 433 /* set a nonzero filter to enable data transfers */ 434 memset(u.set, 0, sizeof *u.set); 435 u.set->msg_type = cpu_to_le32(RNDIS_MSG_SET); 436 u.set->msg_len = cpu_to_le32(4 + sizeof *u.set); 437 u.set->oid = cpu_to_le32(RNDIS_OID_GEN_CURRENT_PACKET_FILTER); 438 u.set->len = cpu_to_le32(4); 439 u.set->offset = cpu_to_le32((sizeof *u.set) - 8); 440 *(__le32 *)(u.buf + sizeof *u.set) = cpu_to_le32(RNDIS_DEFAULT_FILTER); 441 442 retval = rndis_command(dev, u.header, CONTROL_BUFFER_SIZE); 443 if (unlikely(retval < 0)) { 444 dev_err(&intf->dev, "rndis set packet filter, %d\n", retval); 445 goto halt_fail_and_release; 446 } 447 448 retval = 0; 449 450 kfree(u.buf); 451 return retval; 452 453 halt_fail_and_release: 454 memset(u.halt, 0, sizeof *u.halt); 455 u.halt->msg_type = cpu_to_le32(RNDIS_MSG_HALT); 456 u.halt->msg_len = cpu_to_le32(sizeof *u.halt); 457 (void) rndis_command(dev, (void *)u.halt, CONTROL_BUFFER_SIZE); 458 fail_and_release: 459 usb_set_intfdata(info->data, NULL); 460 usb_driver_release_interface(driver_of(intf), info->data); 461 info->data = NULL; 462 fail: 463 kfree(u.buf); 464 return retval; 465 } 466 EXPORT_SYMBOL_GPL(generic_rndis_bind); 467 468 static int rndis_bind(struct usbnet *dev, struct usb_interface *intf) 469 { 470 return generic_rndis_bind(dev, intf, FLAG_RNDIS_PHYM_NOT_WIRELESS); 471 } 472 473 void rndis_unbind(struct usbnet *dev, struct usb_interface *intf) 474 { 475 struct rndis_halt *halt; 476 477 /* try to clear any rndis state/activity (no i/o from stack!) */ 478 halt = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL); 479 if (halt) { 480 halt->msg_type = cpu_to_le32(RNDIS_MSG_HALT); 481 halt->msg_len = cpu_to_le32(sizeof *halt); 482 (void) rndis_command(dev, (void *)halt, CONTROL_BUFFER_SIZE); 483 kfree(halt); 484 } 485 486 usbnet_cdc_unbind(dev, intf); 487 } 488 EXPORT_SYMBOL_GPL(rndis_unbind); 489 490 /* 491 * DATA -- host must not write zlps 492 */ 493 int rndis_rx_fixup(struct usbnet *dev, struct sk_buff *skb) 494 { 495 /* This check is no longer done by usbnet */ 496 if (skb->len < dev->net->hard_header_len) 497 return 0; 498 499 /* peripheral may have batched packets to us... */ 500 while (likely(skb->len)) { 501 struct rndis_data_hdr *hdr = (void *)skb->data; 502 struct sk_buff *skb2; 503 u32 msg_type, msg_len, data_offset, data_len; 504 505 msg_type = le32_to_cpu(hdr->msg_type); 506 msg_len = le32_to_cpu(hdr->msg_len); 507 data_offset = le32_to_cpu(hdr->data_offset); 508 data_len = le32_to_cpu(hdr->data_len); 509 510 /* don't choke if we see oob, per-packet data, etc */ 511 if (unlikely(msg_type != RNDIS_MSG_PACKET || skb->len < msg_len 512 || (data_offset + data_len + 8) > msg_len)) { 513 dev->net->stats.rx_frame_errors++; 514 netdev_dbg(dev->net, "bad rndis message %d/%d/%d/%d, len %d\n", 515 le32_to_cpu(hdr->msg_type), 516 msg_len, data_offset, data_len, skb->len); 517 return 0; 518 } 519 skb_pull(skb, 8 + data_offset); 520 521 /* at most one packet left? */ 522 if (likely((data_len - skb->len) <= sizeof *hdr)) { 523 skb_trim(skb, data_len); 524 break; 525 } 526 527 /* try to return all the packets in the batch */ 528 skb2 = skb_clone(skb, GFP_ATOMIC); 529 if (unlikely(!skb2)) 530 break; 531 skb_pull(skb, msg_len - sizeof *hdr); 532 skb_trim(skb2, data_len); 533 usbnet_skb_return(dev, skb2); 534 } 535 536 /* caller will usbnet_skb_return the remaining packet */ 537 return 1; 538 } 539 EXPORT_SYMBOL_GPL(rndis_rx_fixup); 540 541 struct sk_buff * 542 rndis_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags) 543 { 544 struct rndis_data_hdr *hdr; 545 struct sk_buff *skb2; 546 unsigned len = skb->len; 547 548 if (likely(!skb_cloned(skb))) { 549 int room = skb_headroom(skb); 550 551 /* enough head room as-is? */ 552 if (unlikely((sizeof *hdr) <= room)) 553 goto fill; 554 555 /* enough room, but needs to be readjusted? */ 556 room += skb_tailroom(skb); 557 if (likely((sizeof *hdr) <= room)) { 558 skb->data = memmove(skb->head + sizeof *hdr, 559 skb->data, len); 560 skb_set_tail_pointer(skb, len); 561 goto fill; 562 } 563 } 564 565 /* create a new skb, with the correct size (and tailpad) */ 566 skb2 = skb_copy_expand(skb, sizeof *hdr, 1, flags); 567 dev_kfree_skb_any(skb); 568 if (unlikely(!skb2)) 569 return skb2; 570 skb = skb2; 571 572 /* fill out the RNDIS header. we won't bother trying to batch 573 * packets; Linux minimizes wasted bandwidth through tx queues. 574 */ 575 fill: 576 hdr = (void *) __skb_push(skb, sizeof *hdr); 577 memset(hdr, 0, sizeof *hdr); 578 hdr->msg_type = cpu_to_le32(RNDIS_MSG_PACKET); 579 hdr->msg_len = cpu_to_le32(skb->len); 580 hdr->data_offset = cpu_to_le32(sizeof(*hdr) - 8); 581 hdr->data_len = cpu_to_le32(len); 582 583 /* FIXME make the last packet always be short ... */ 584 return skb; 585 } 586 EXPORT_SYMBOL_GPL(rndis_tx_fixup); 587 588 589 static const struct driver_info rndis_info = { 590 .description = "RNDIS device", 591 .flags = FLAG_ETHER | FLAG_POINTTOPOINT | FLAG_FRAMING_RN | FLAG_NO_SETINT, 592 .bind = rndis_bind, 593 .unbind = rndis_unbind, 594 .status = rndis_status, 595 .rx_fixup = rndis_rx_fixup, 596 .tx_fixup = rndis_tx_fixup, 597 }; 598 599 static const struct driver_info rndis_poll_status_info = { 600 .description = "RNDIS device (poll status before control)", 601 .flags = FLAG_ETHER | FLAG_POINTTOPOINT | FLAG_FRAMING_RN | FLAG_NO_SETINT, 602 .data = RNDIS_DRIVER_DATA_POLL_STATUS, 603 .bind = rndis_bind, 604 .unbind = rndis_unbind, 605 .status = rndis_status, 606 .rx_fixup = rndis_rx_fixup, 607 .tx_fixup = rndis_tx_fixup, 608 }; 609 610 /*-------------------------------------------------------------------------*/ 611 612 static const struct usb_device_id products [] = { 613 { 614 /* 2Wire HomePortal 1000SW */ 615 USB_DEVICE_AND_INTERFACE_INFO(0x1630, 0x0042, 616 USB_CLASS_COMM, 2 /* ACM */, 0x0ff), 617 .driver_info = (unsigned long) &rndis_poll_status_info, 618 }, { 619 /* RNDIS is MSFT's un-official variant of CDC ACM */ 620 USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff), 621 .driver_info = (unsigned long) &rndis_info, 622 }, { 623 /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */ 624 USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1), 625 .driver_info = (unsigned long) &rndis_poll_status_info, 626 }, { 627 /* RNDIS for tethering */ 628 USB_INTERFACE_INFO(USB_CLASS_WIRELESS_CONTROLLER, 1, 3), 629 .driver_info = (unsigned long) &rndis_info, 630 }, 631 { }, // END 632 }; 633 MODULE_DEVICE_TABLE(usb, products); 634 635 static struct usb_driver rndis_driver = { 636 .name = "rndis_host", 637 .id_table = products, 638 .probe = usbnet_probe, 639 .disconnect = usbnet_disconnect, 640 .suspend = usbnet_suspend, 641 .resume = usbnet_resume, 642 .disable_hub_initiated_lpm = 1, 643 }; 644 645 module_usb_driver(rndis_driver); 646 647 MODULE_AUTHOR("David Brownell"); 648 MODULE_DESCRIPTION("USB Host side RNDIS driver"); 649 MODULE_LICENSE("GPL"); 650