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 u32 status = le32_to_cpu(msg->status); 81 82 switch (status) { 83 case RNDIS_STATUS_MEDIA_CONNECT: 84 dev_info(udev, "rndis media connect\n"); 85 break; 86 case RNDIS_STATUS_MEDIA_DISCONNECT: 87 dev_info(udev, "rndis media disconnect\n"); 88 break; 89 default: 90 dev_info(udev, "rndis indication: 0x%08x\n", status); 91 } 92 } 93 } 94 95 /* 96 * RPC done RNDIS-style. Caller guarantees: 97 * - message is properly byteswapped 98 * - there's no other request pending 99 * - buf can hold up to 1KB response (required by RNDIS spec) 100 * On return, the first few entries are already byteswapped. 101 * 102 * Call context is likely probe(), before interface name is known, 103 * which is why we won't try to use it in the diagnostics. 104 */ 105 int rndis_command(struct usbnet *dev, struct rndis_msg_hdr *buf, int buflen) 106 { 107 struct cdc_state *info = (void *) &dev->data; 108 struct usb_cdc_notification notification; 109 int master_ifnum; 110 int retval; 111 int partial; 112 unsigned count; 113 u32 xid = 0, msg_len, request_id, msg_type, rsp, 114 status; 115 116 /* REVISIT when this gets called from contexts other than probe() or 117 * disconnect(): either serialize, or dispatch responses on xid 118 */ 119 120 msg_type = le32_to_cpu(buf->msg_type); 121 122 /* Issue the request; xid is unique, don't bother byteswapping it */ 123 if (likely(msg_type != RNDIS_MSG_HALT && msg_type != RNDIS_MSG_RESET)) { 124 xid = dev->xid++; 125 if (!xid) 126 xid = dev->xid++; 127 buf->request_id = (__force __le32) xid; 128 } 129 master_ifnum = info->control->cur_altsetting->desc.bInterfaceNumber; 130 retval = usb_control_msg(dev->udev, 131 usb_sndctrlpipe(dev->udev, 0), 132 USB_CDC_SEND_ENCAPSULATED_COMMAND, 133 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 134 0, master_ifnum, 135 buf, le32_to_cpu(buf->msg_len), 136 RNDIS_CONTROL_TIMEOUT_MS); 137 if (unlikely(retval < 0 || xid == 0)) 138 return retval; 139 140 /* Some devices don't respond on the control channel until 141 * polled on the status channel, so do that first. */ 142 if (dev->driver_info->data & RNDIS_DRIVER_DATA_POLL_STATUS) { 143 retval = usb_interrupt_msg( 144 dev->udev, 145 usb_rcvintpipe(dev->udev, 146 dev->status->desc.bEndpointAddress), 147 ¬ification, sizeof(notification), &partial, 148 RNDIS_CONTROL_TIMEOUT_MS); 149 if (unlikely(retval < 0)) 150 return retval; 151 } 152 153 /* Poll the control channel; the request probably completed immediately */ 154 rsp = le32_to_cpu(buf->msg_type) | RNDIS_MSG_COMPLETION; 155 for (count = 0; count < 10; count++) { 156 memset(buf, 0, CONTROL_BUFFER_SIZE); 157 retval = usb_control_msg(dev->udev, 158 usb_rcvctrlpipe(dev->udev, 0), 159 USB_CDC_GET_ENCAPSULATED_RESPONSE, 160 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, 161 0, master_ifnum, 162 buf, buflen, 163 RNDIS_CONTROL_TIMEOUT_MS); 164 if (likely(retval >= 8)) { 165 msg_type = le32_to_cpu(buf->msg_type); 166 msg_len = le32_to_cpu(buf->msg_len); 167 status = le32_to_cpu(buf->status); 168 request_id = (__force u32) buf->request_id; 169 if (likely(msg_type == rsp)) { 170 if (likely(request_id == xid)) { 171 if (unlikely(rsp == RNDIS_MSG_RESET_C)) 172 return 0; 173 if (likely(RNDIS_STATUS_SUCCESS == 174 status)) 175 return 0; 176 dev_dbg(&info->control->dev, 177 "rndis reply status %08x\n", 178 status); 179 return -EL3RST; 180 } 181 dev_dbg(&info->control->dev, 182 "rndis reply id %d expected %d\n", 183 request_id, xid); 184 /* then likely retry */ 185 } else switch (msg_type) { 186 case RNDIS_MSG_INDICATE: /* fault/event */ 187 rndis_msg_indicate(dev, (void *)buf, buflen); 188 break; 189 case RNDIS_MSG_KEEPALIVE: { /* ping */ 190 struct rndis_keepalive_c *msg = (void *)buf; 191 192 msg->msg_type = cpu_to_le32(RNDIS_MSG_KEEPALIVE_C); 193 msg->msg_len = cpu_to_le32(sizeof *msg); 194 msg->status = cpu_to_le32(RNDIS_STATUS_SUCCESS); 195 retval = usb_control_msg(dev->udev, 196 usb_sndctrlpipe(dev->udev, 0), 197 USB_CDC_SEND_ENCAPSULATED_COMMAND, 198 USB_TYPE_CLASS | USB_RECIP_INTERFACE, 199 0, master_ifnum, 200 msg, sizeof *msg, 201 RNDIS_CONTROL_TIMEOUT_MS); 202 if (unlikely(retval < 0)) 203 dev_dbg(&info->control->dev, 204 "rndis keepalive err %d\n", 205 retval); 206 } 207 break; 208 default: 209 dev_dbg(&info->control->dev, 210 "unexpected rndis msg %08x len %d\n", 211 le32_to_cpu(buf->msg_type), msg_len); 212 } 213 } else { 214 /* device probably issued a protocol stall; ignore */ 215 dev_dbg(&info->control->dev, 216 "rndis response error, code %d\n", retval); 217 } 218 msleep(20); 219 } 220 dev_dbg(&info->control->dev, "rndis response timeout\n"); 221 return -ETIMEDOUT; 222 } 223 EXPORT_SYMBOL_GPL(rndis_command); 224 225 /* 226 * rndis_query: 227 * 228 * Performs a query for @oid along with 0 or more bytes of payload as 229 * specified by @in_len. If @reply_len is not set to -1 then the reply 230 * length is checked against this value, resulting in an error if it 231 * doesn't match. 232 * 233 * NOTE: Adding a payload exactly or greater than the size of the expected 234 * response payload is an evident requirement MSFT added for ActiveSync. 235 * 236 * The only exception is for OIDs that return a variably sized response, 237 * in which case no payload should be added. This undocumented (and 238 * nonsensical!) issue was found by sniffing protocol requests from the 239 * ActiveSync 4.1 Windows driver. 240 */ 241 static int rndis_query(struct usbnet *dev, struct usb_interface *intf, 242 void *buf, u32 oid, u32 in_len, 243 void **reply, int *reply_len) 244 { 245 int retval; 246 union { 247 void *buf; 248 struct rndis_msg_hdr *header; 249 struct rndis_query *get; 250 struct rndis_query_c *get_c; 251 } u; 252 u32 off, len; 253 254 u.buf = buf; 255 256 memset(u.get, 0, sizeof *u.get + in_len); 257 u.get->msg_type = cpu_to_le32(RNDIS_MSG_QUERY); 258 u.get->msg_len = cpu_to_le32(sizeof *u.get + in_len); 259 u.get->oid = cpu_to_le32(oid); 260 u.get->len = cpu_to_le32(in_len); 261 u.get->offset = cpu_to_le32(20); 262 263 retval = rndis_command(dev, u.header, CONTROL_BUFFER_SIZE); 264 if (unlikely(retval < 0)) { 265 dev_err(&intf->dev, "RNDIS_MSG_QUERY(0x%08x) failed, %d\n", 266 oid, retval); 267 return retval; 268 } 269 270 off = le32_to_cpu(u.get_c->offset); 271 len = le32_to_cpu(u.get_c->len); 272 if (unlikely((8 + off + len) > CONTROL_BUFFER_SIZE)) 273 goto response_error; 274 275 if (*reply_len != -1 && len != *reply_len) 276 goto response_error; 277 278 *reply = (unsigned char *) &u.get_c->request_id + off; 279 *reply_len = len; 280 281 return retval; 282 283 response_error: 284 dev_err(&intf->dev, "RNDIS_MSG_QUERY(0x%08x) " 285 "invalid response - off %d len %d\n", 286 oid, off, len); 287 return -EDOM; 288 } 289 290 /* same as usbnet_netdev_ops but MTU change not allowed */ 291 static const struct net_device_ops rndis_netdev_ops = { 292 .ndo_open = usbnet_open, 293 .ndo_stop = usbnet_stop, 294 .ndo_start_xmit = usbnet_start_xmit, 295 .ndo_tx_timeout = usbnet_tx_timeout, 296 .ndo_set_mac_address = eth_mac_addr, 297 .ndo_validate_addr = eth_validate_addr, 298 }; 299 300 int 301 generic_rndis_bind(struct usbnet *dev, struct usb_interface *intf, int flags) 302 { 303 int retval; 304 struct net_device *net = dev->net; 305 struct cdc_state *info = (void *) &dev->data; 306 union { 307 void *buf; 308 struct rndis_msg_hdr *header; 309 struct rndis_init *init; 310 struct rndis_init_c *init_c; 311 struct rndis_query *get; 312 struct rndis_query_c *get_c; 313 struct rndis_set *set; 314 struct rndis_set_c *set_c; 315 struct rndis_halt *halt; 316 } u; 317 u32 tmp; 318 __le32 phym_unspec, *phym; 319 int reply_len; 320 unsigned char *bp; 321 322 /* we can't rely on i/o from stack working, or stack allocation */ 323 u.buf = kmalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL); 324 if (!u.buf) 325 return -ENOMEM; 326 retval = usbnet_generic_cdc_bind(dev, intf); 327 if (retval < 0) 328 goto fail; 329 330 u.init->msg_type = cpu_to_le32(RNDIS_MSG_INIT); 331 u.init->msg_len = cpu_to_le32(sizeof *u.init); 332 u.init->major_version = cpu_to_le32(1); 333 u.init->minor_version = cpu_to_le32(0); 334 335 /* max transfer (in spec) is 0x4000 at full speed, but for 336 * TX we'll stick to one Ethernet packet plus RNDIS framing. 337 * For RX we handle drivers that zero-pad to end-of-packet. 338 * Don't let userspace change these settings. 339 * 340 * NOTE: there still seems to be wierdness here, as if we need 341 * to do some more things to make sure WinCE targets accept this. 342 * They default to jumbograms of 8KB or 16KB, which is absurd 343 * for such low data rates and which is also more than Linux 344 * can usually expect to allocate for SKB data... 345 */ 346 net->hard_header_len += sizeof (struct rndis_data_hdr); 347 dev->hard_mtu = net->mtu + net->hard_header_len; 348 349 dev->maxpacket = usb_maxpacket(dev->udev, dev->out, 1); 350 if (dev->maxpacket == 0) { 351 netif_dbg(dev, probe, dev->net, 352 "dev->maxpacket can't be 0\n"); 353 retval = -EINVAL; 354 goto fail_and_release; 355 } 356 357 dev->rx_urb_size = dev->hard_mtu + (dev->maxpacket + 1); 358 dev->rx_urb_size &= ~(dev->maxpacket - 1); 359 u.init->max_transfer_size = cpu_to_le32(dev->rx_urb_size); 360 361 net->netdev_ops = &rndis_netdev_ops; 362 363 retval = rndis_command(dev, u.header, CONTROL_BUFFER_SIZE); 364 if (unlikely(retval < 0)) { 365 /* it might not even be an RNDIS device!! */ 366 dev_err(&intf->dev, "RNDIS init failed, %d\n", retval); 367 goto fail_and_release; 368 } 369 tmp = le32_to_cpu(u.init_c->max_transfer_size); 370 if (tmp < dev->hard_mtu) { 371 if (tmp <= net->hard_header_len) { 372 dev_err(&intf->dev, 373 "dev can't take %u byte packets (max %u)\n", 374 dev->hard_mtu, tmp); 375 retval = -EINVAL; 376 goto halt_fail_and_release; 377 } 378 dev_warn(&intf->dev, 379 "dev can't take %u byte packets (max %u), " 380 "adjusting MTU to %u\n", 381 dev->hard_mtu, tmp, tmp - net->hard_header_len); 382 dev->hard_mtu = tmp; 383 net->mtu = dev->hard_mtu - net->hard_header_len; 384 } 385 386 /* REVISIT: peripheral "alignment" request is ignored ... */ 387 dev_dbg(&intf->dev, 388 "hard mtu %u (%u from dev), rx buflen %Zu, align %d\n", 389 dev->hard_mtu, tmp, dev->rx_urb_size, 390 1 << le32_to_cpu(u.init_c->packet_alignment)); 391 392 /* module has some device initialization code needs to be done right 393 * after RNDIS_INIT */ 394 if (dev->driver_info->early_init && 395 dev->driver_info->early_init(dev) != 0) 396 goto halt_fail_and_release; 397 398 /* Check physical medium */ 399 phym = NULL; 400 reply_len = sizeof *phym; 401 retval = rndis_query(dev, intf, u.buf, 402 RNDIS_OID_GEN_PHYSICAL_MEDIUM, 403 0, (void **) &phym, &reply_len); 404 if (retval != 0 || !phym) { 405 /* OID is optional so don't fail here. */ 406 phym_unspec = cpu_to_le32(RNDIS_PHYSICAL_MEDIUM_UNSPECIFIED); 407 phym = &phym_unspec; 408 } 409 if ((flags & FLAG_RNDIS_PHYM_WIRELESS) && 410 le32_to_cpup(phym) != RNDIS_PHYSICAL_MEDIUM_WIRELESS_LAN) { 411 netif_dbg(dev, probe, dev->net, 412 "driver requires wireless physical medium, but device is not\n"); 413 retval = -ENODEV; 414 goto halt_fail_and_release; 415 } 416 if ((flags & FLAG_RNDIS_PHYM_NOT_WIRELESS) && 417 le32_to_cpup(phym) == RNDIS_PHYSICAL_MEDIUM_WIRELESS_LAN) { 418 netif_dbg(dev, probe, dev->net, 419 "driver requires non-wireless physical medium, but device is wireless.\n"); 420 retval = -ENODEV; 421 goto halt_fail_and_release; 422 } 423 424 /* Get designated host ethernet address */ 425 reply_len = ETH_ALEN; 426 retval = rndis_query(dev, intf, u.buf, 427 RNDIS_OID_802_3_PERMANENT_ADDRESS, 428 48, (void **) &bp, &reply_len); 429 if (unlikely(retval< 0)) { 430 dev_err(&intf->dev, "rndis get ethaddr, %d\n", retval); 431 goto halt_fail_and_release; 432 } 433 memcpy(net->dev_addr, bp, ETH_ALEN); 434 memcpy(net->perm_addr, bp, ETH_ALEN); 435 436 /* set a nonzero filter to enable data transfers */ 437 memset(u.set, 0, sizeof *u.set); 438 u.set->msg_type = cpu_to_le32(RNDIS_MSG_SET); 439 u.set->msg_len = cpu_to_le32(4 + sizeof *u.set); 440 u.set->oid = cpu_to_le32(RNDIS_OID_GEN_CURRENT_PACKET_FILTER); 441 u.set->len = cpu_to_le32(4); 442 u.set->offset = cpu_to_le32((sizeof *u.set) - 8); 443 *(__le32 *)(u.buf + sizeof *u.set) = cpu_to_le32(RNDIS_DEFAULT_FILTER); 444 445 retval = rndis_command(dev, u.header, CONTROL_BUFFER_SIZE); 446 if (unlikely(retval < 0)) { 447 dev_err(&intf->dev, "rndis set packet filter, %d\n", retval); 448 goto halt_fail_and_release; 449 } 450 451 retval = 0; 452 453 kfree(u.buf); 454 return retval; 455 456 halt_fail_and_release: 457 memset(u.halt, 0, sizeof *u.halt); 458 u.halt->msg_type = cpu_to_le32(RNDIS_MSG_HALT); 459 u.halt->msg_len = cpu_to_le32(sizeof *u.halt); 460 (void) rndis_command(dev, (void *)u.halt, CONTROL_BUFFER_SIZE); 461 fail_and_release: 462 usb_set_intfdata(info->data, NULL); 463 usb_driver_release_interface(driver_of(intf), info->data); 464 info->data = NULL; 465 fail: 466 kfree(u.buf); 467 return retval; 468 } 469 EXPORT_SYMBOL_GPL(generic_rndis_bind); 470 471 static int rndis_bind(struct usbnet *dev, struct usb_interface *intf) 472 { 473 return generic_rndis_bind(dev, intf, FLAG_RNDIS_PHYM_NOT_WIRELESS); 474 } 475 476 void rndis_unbind(struct usbnet *dev, struct usb_interface *intf) 477 { 478 struct rndis_halt *halt; 479 480 /* try to clear any rndis state/activity (no i/o from stack!) */ 481 halt = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL); 482 if (halt) { 483 halt->msg_type = cpu_to_le32(RNDIS_MSG_HALT); 484 halt->msg_len = cpu_to_le32(sizeof *halt); 485 (void) rndis_command(dev, (void *)halt, CONTROL_BUFFER_SIZE); 486 kfree(halt); 487 } 488 489 usbnet_cdc_unbind(dev, intf); 490 } 491 EXPORT_SYMBOL_GPL(rndis_unbind); 492 493 /* 494 * DATA -- host must not write zlps 495 */ 496 int rndis_rx_fixup(struct usbnet *dev, struct sk_buff *skb) 497 { 498 /* peripheral may have batched packets to us... */ 499 while (likely(skb->len)) { 500 struct rndis_data_hdr *hdr = (void *)skb->data; 501 struct sk_buff *skb2; 502 u32 msg_type, msg_len, data_offset, data_len; 503 504 msg_type = le32_to_cpu(hdr->msg_type); 505 msg_len = le32_to_cpu(hdr->msg_len); 506 data_offset = le32_to_cpu(hdr->data_offset); 507 data_len = le32_to_cpu(hdr->data_len); 508 509 /* don't choke if we see oob, per-packet data, etc */ 510 if (unlikely(msg_type != RNDIS_MSG_PACKET || skb->len < msg_len 511 || (data_offset + data_len + 8) > msg_len)) { 512 dev->net->stats.rx_frame_errors++; 513 netdev_dbg(dev->net, "bad rndis message %d/%d/%d/%d, len %d\n", 514 le32_to_cpu(hdr->msg_type), 515 msg_len, data_offset, data_len, skb->len); 516 return 0; 517 } 518 skb_pull(skb, 8 + data_offset); 519 520 /* at most one packet left? */ 521 if (likely((data_len - skb->len) <= sizeof *hdr)) { 522 skb_trim(skb, data_len); 523 break; 524 } 525 526 /* try to return all the packets in the batch */ 527 skb2 = skb_clone(skb, GFP_ATOMIC); 528 if (unlikely(!skb2)) 529 break; 530 skb_pull(skb, msg_len - sizeof *hdr); 531 skb_trim(skb2, data_len); 532 usbnet_skb_return(dev, skb2); 533 } 534 535 /* caller will usbnet_skb_return the remaining packet */ 536 return 1; 537 } 538 EXPORT_SYMBOL_GPL(rndis_rx_fixup); 539 540 struct sk_buff * 541 rndis_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags) 542 { 543 struct rndis_data_hdr *hdr; 544 struct sk_buff *skb2; 545 unsigned len = skb->len; 546 547 if (likely(!skb_cloned(skb))) { 548 int room = skb_headroom(skb); 549 550 /* enough head room as-is? */ 551 if (unlikely((sizeof *hdr) <= room)) 552 goto fill; 553 554 /* enough room, but needs to be readjusted? */ 555 room += skb_tailroom(skb); 556 if (likely((sizeof *hdr) <= room)) { 557 skb->data = memmove(skb->head + sizeof *hdr, 558 skb->data, len); 559 skb_set_tail_pointer(skb, len); 560 goto fill; 561 } 562 } 563 564 /* create a new skb, with the correct size (and tailpad) */ 565 skb2 = skb_copy_expand(skb, sizeof *hdr, 1, flags); 566 dev_kfree_skb_any(skb); 567 if (unlikely(!skb2)) 568 return skb2; 569 skb = skb2; 570 571 /* fill out the RNDIS header. we won't bother trying to batch 572 * packets; Linux minimizes wasted bandwidth through tx queues. 573 */ 574 fill: 575 hdr = (void *) __skb_push(skb, sizeof *hdr); 576 memset(hdr, 0, sizeof *hdr); 577 hdr->msg_type = cpu_to_le32(RNDIS_MSG_PACKET); 578 hdr->msg_len = cpu_to_le32(skb->len); 579 hdr->data_offset = cpu_to_le32(sizeof(*hdr) - 8); 580 hdr->data_len = cpu_to_le32(len); 581 582 /* FIXME make the last packet always be short ... */ 583 return skb; 584 } 585 EXPORT_SYMBOL_GPL(rndis_tx_fixup); 586 587 588 static const struct driver_info rndis_info = { 589 .description = "RNDIS device", 590 .flags = FLAG_ETHER | FLAG_POINTTOPOINT | FLAG_FRAMING_RN | FLAG_NO_SETINT, 591 .bind = rndis_bind, 592 .unbind = rndis_unbind, 593 .status = rndis_status, 594 .rx_fixup = rndis_rx_fixup, 595 .tx_fixup = rndis_tx_fixup, 596 }; 597 598 static const struct driver_info rndis_poll_status_info = { 599 .description = "RNDIS device (poll status before control)", 600 .flags = FLAG_ETHER | FLAG_POINTTOPOINT | FLAG_FRAMING_RN | FLAG_NO_SETINT, 601 .data = RNDIS_DRIVER_DATA_POLL_STATUS, 602 .bind = rndis_bind, 603 .unbind = rndis_unbind, 604 .status = rndis_status, 605 .rx_fixup = rndis_rx_fixup, 606 .tx_fixup = rndis_tx_fixup, 607 }; 608 609 /*-------------------------------------------------------------------------*/ 610 611 static const struct usb_device_id products [] = { 612 { 613 /* 2Wire HomePortal 1000SW */ 614 USB_DEVICE_AND_INTERFACE_INFO(0x1630, 0x0042, 615 USB_CLASS_COMM, 2 /* ACM */, 0x0ff), 616 .driver_info = (unsigned long) &rndis_poll_status_info, 617 }, { 618 /* RNDIS is MSFT's un-official variant of CDC ACM */ 619 USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff), 620 .driver_info = (unsigned long) &rndis_info, 621 }, { 622 /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */ 623 USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1), 624 .driver_info = (unsigned long) &rndis_poll_status_info, 625 }, { 626 /* RNDIS for tethering */ 627 USB_INTERFACE_INFO(USB_CLASS_WIRELESS_CONTROLLER, 1, 3), 628 .driver_info = (unsigned long) &rndis_info, 629 }, 630 { }, // END 631 }; 632 MODULE_DEVICE_TABLE(usb, products); 633 634 static struct usb_driver rndis_driver = { 635 .name = "rndis_host", 636 .id_table = products, 637 .probe = usbnet_probe, 638 .disconnect = usbnet_disconnect, 639 .suspend = usbnet_suspend, 640 .resume = usbnet_resume, 641 .disable_hub_initiated_lpm = 1, 642 }; 643 644 module_usb_driver(rndis_driver); 645 646 MODULE_AUTHOR("David Brownell"); 647 MODULE_DESCRIPTION("USB Host side RNDIS driver"); 648 MODULE_LICENSE("GPL"); 649