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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Host Side support for RNDIS Networking Links4 * Copyright (C) 2005 by David Brownell5 */6#include <linux/module.h>7#include <linux/netdevice.h>8#include <linux/etherdevice.h>9#include <linux/ethtool.h>10#include <linux/workqueue.h>11#include <linux/slab.h>12#include <linux/mii.h>13#include <linux/usb.h>14#include <linux/usb/cdc.h>15#include <linux/usb/usbnet.h>16#include <linux/usb/rndis_host.h>17 18 19/*20 * RNDIS is NDIS remoted over USB. It's a MSFT variant of CDC ACM ... of21 * course ACM was intended for modems, not Ethernet links! USB's standard22 * for Ethernet links is "CDC Ethernet", which is significantly simpler.23 *24 * NOTE that Microsoft's "RNDIS 1.0" specification is incomplete. Issues25 * include:26 * - Power management in particular relies on information that's scattered27 * through other documentation, and which is incomplete or incorrect even28 * there.29 * - There are various undocumented protocol requirements, such as the30 * need to send unused garbage in control-OUT messages.31 * - In some cases, MS-Windows will emit undocumented requests; this32 * matters more to peripheral implementations than host ones.33 *34 * Moreover there's a no-open-specs variant of RNDIS called "ActiveSync".35 *36 * For these reasons and others, ** USE OF RNDIS IS STRONGLY DISCOURAGED ** in37 * favor of such non-proprietary alternatives as CDC Ethernet or the newer (and38 * currently rare) "Ethernet Emulation Model" (EEM).39 */40 41/*42 * RNDIS notifications from device: command completion; "reverse"43 * keepalives; etc44 */45void rndis_status(struct usbnet *dev, struct urb *urb)46{47 netdev_dbg(dev->net, "rndis status urb, len %d stat %d\n",48 urb->actual_length, urb->status);49 // FIXME for keepalives, respond immediately (asynchronously)50 // if not an RNDIS status, do like cdc_status(dev,urb) does51}52EXPORT_SYMBOL_GPL(rndis_status);53 54/*55 * RNDIS indicate messages.56 */57static void rndis_msg_indicate(struct usbnet *dev, struct rndis_indicate *msg,58 int buflen)59{60 struct cdc_state *info = (void *)&dev->data;61 struct device *udev = &info->control->dev;62 63 if (dev->driver_info->indication) {64 dev->driver_info->indication(dev, msg, buflen);65 } else {66 u32 status = le32_to_cpu(msg->status);67 68 switch (status) {69 case RNDIS_STATUS_MEDIA_CONNECT:70 dev_info(udev, "rndis media connect\n");71 break;72 case RNDIS_STATUS_MEDIA_DISCONNECT:73 dev_info(udev, "rndis media disconnect\n");74 break;75 default:76 dev_info(udev, "rndis indication: 0x%08x\n", status);77 }78 }79}80 81/*82 * RPC done RNDIS-style. Caller guarantees:83 * - message is properly byteswapped84 * - there's no other request pending85 * - buf can hold up to 1KB response (required by RNDIS spec)86 * On return, the first few entries are already byteswapped.87 *88 * Call context is likely probe(), before interface name is known,89 * which is why we won't try to use it in the diagnostics.90 */91int rndis_command(struct usbnet *dev, struct rndis_msg_hdr *buf, int buflen)92{93 struct cdc_state *info = (void *) &dev->data;94 struct usb_cdc_notification notification;95 int master_ifnum;96 int retval;97 int partial;98 unsigned count;99 u32 xid = 0, msg_len, request_id, msg_type, rsp,100 status;101 102 /* REVISIT when this gets called from contexts other than probe() or103 * disconnect(): either serialize, or dispatch responses on xid104 */105 106 msg_type = le32_to_cpu(buf->msg_type);107 108 /* Issue the request; xid is unique, don't bother byteswapping it */109 if (likely(msg_type != RNDIS_MSG_HALT && msg_type != RNDIS_MSG_RESET)) {110 xid = dev->xid++;111 if (!xid)112 xid = dev->xid++;113 buf->request_id = (__force __le32) xid;114 }115 master_ifnum = info->control->cur_altsetting->desc.bInterfaceNumber;116 retval = usb_control_msg(dev->udev,117 usb_sndctrlpipe(dev->udev, 0),118 USB_CDC_SEND_ENCAPSULATED_COMMAND,119 USB_TYPE_CLASS | USB_RECIP_INTERFACE,120 0, master_ifnum,121 buf, le32_to_cpu(buf->msg_len),122 RNDIS_CONTROL_TIMEOUT_MS);123 if (unlikely(retval < 0 || xid == 0))124 return retval;125 126 /* Some devices don't respond on the control channel until127 * polled on the status channel, so do that first. */128 if (dev->driver_info->data & RNDIS_DRIVER_DATA_POLL_STATUS) {129 retval = usb_interrupt_msg(130 dev->udev,131 usb_rcvintpipe(dev->udev,132 dev->status->desc.bEndpointAddress),133 ¬ification, sizeof(notification), &partial,134 RNDIS_CONTROL_TIMEOUT_MS);135 if (unlikely(retval < 0))136 return retval;137 }138 139 /* Poll the control channel; the request probably completed immediately */140 rsp = le32_to_cpu(buf->msg_type) | RNDIS_MSG_COMPLETION;141 for (count = 0; count < 10; count++) {142 memset(buf, 0, CONTROL_BUFFER_SIZE);143 retval = usb_control_msg(dev->udev,144 usb_rcvctrlpipe(dev->udev, 0),145 USB_CDC_GET_ENCAPSULATED_RESPONSE,146 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE,147 0, master_ifnum,148 buf, buflen,149 RNDIS_CONTROL_TIMEOUT_MS);150 if (likely(retval >= 8)) {151 msg_type = le32_to_cpu(buf->msg_type);152 msg_len = le32_to_cpu(buf->msg_len);153 status = le32_to_cpu(buf->status);154 request_id = (__force u32) buf->request_id;155 if (likely(msg_type == rsp)) {156 if (likely(request_id == xid)) {157 if (unlikely(rsp == RNDIS_MSG_RESET_C))158 return 0;159 if (likely(RNDIS_STATUS_SUCCESS ==160 status))161 return 0;162 dev_dbg(&info->control->dev,163 "rndis reply status %08x\n",164 status);165 return -EL3RST;166 }167 dev_dbg(&info->control->dev,168 "rndis reply id %d expected %d\n",169 request_id, xid);170 /* then likely retry */171 } else switch (msg_type) {172 case RNDIS_MSG_INDICATE: /* fault/event */173 rndis_msg_indicate(dev, (void *)buf, buflen);174 break;175 case RNDIS_MSG_KEEPALIVE: { /* ping */176 struct rndis_keepalive_c *msg = (void *)buf;177 178 msg->msg_type = cpu_to_le32(RNDIS_MSG_KEEPALIVE_C);179 msg->msg_len = cpu_to_le32(sizeof *msg);180 msg->status = cpu_to_le32(RNDIS_STATUS_SUCCESS);181 retval = usb_control_msg(dev->udev,182 usb_sndctrlpipe(dev->udev, 0),183 USB_CDC_SEND_ENCAPSULATED_COMMAND,184 USB_TYPE_CLASS | USB_RECIP_INTERFACE,185 0, master_ifnum,186 msg, sizeof *msg,187 RNDIS_CONTROL_TIMEOUT_MS);188 if (unlikely(retval < 0))189 dev_dbg(&info->control->dev,190 "rndis keepalive err %d\n",191 retval);192 }193 break;194 default:195 dev_dbg(&info->control->dev,196 "unexpected rndis msg %08x len %d\n",197 le32_to_cpu(buf->msg_type), msg_len);198 }199 } else {200 /* device probably issued a protocol stall; ignore */201 dev_dbg(&info->control->dev,202 "rndis response error, code %d\n", retval);203 }204 msleep(40);205 }206 dev_dbg(&info->control->dev, "rndis response timeout\n");207 return -ETIMEDOUT;208}209EXPORT_SYMBOL_GPL(rndis_command);210 211/*212 * rndis_query:213 *214 * Performs a query for @oid along with 0 or more bytes of payload as215 * specified by @in_len. If @reply_len is not set to -1 then the reply216 * length is checked against this value, resulting in an error if it217 * doesn't match.218 *219 * NOTE: Adding a payload exactly or greater than the size of the expected220 * response payload is an evident requirement MSFT added for ActiveSync.221 *222 * The only exception is for OIDs that return a variably sized response,223 * in which case no payload should be added. This undocumented (and224 * nonsensical!) issue was found by sniffing protocol requests from the225 * ActiveSync 4.1 Windows driver.226 */227static int rndis_query(struct usbnet *dev, struct usb_interface *intf,228 void *buf, u32 oid, u32 in_len,229 void **reply, int *reply_len)230{231 int retval;232 union {233 void *buf;234 struct rndis_msg_hdr *header;235 struct rndis_query *get;236 struct rndis_query_c *get_c;237 } u;238 u32 off, len;239 240 u.buf = buf;241 242 memset(u.get, 0, sizeof *u.get + in_len);243 u.get->msg_type = cpu_to_le32(RNDIS_MSG_QUERY);244 u.get->msg_len = cpu_to_le32(sizeof *u.get + in_len);245 u.get->oid = cpu_to_le32(oid);246 u.get->len = cpu_to_le32(in_len);247 u.get->offset = cpu_to_le32(20);248 249 retval = rndis_command(dev, u.header, CONTROL_BUFFER_SIZE);250 if (unlikely(retval < 0)) {251 dev_err(&intf->dev, "RNDIS_MSG_QUERY(0x%08x) failed, %d\n",252 oid, retval);253 return retval;254 }255 256 off = le32_to_cpu(u.get_c->offset);257 len = le32_to_cpu(u.get_c->len);258 if (unlikely((off > CONTROL_BUFFER_SIZE - 8) ||259 (len > CONTROL_BUFFER_SIZE - 8 - off)))260 goto response_error;261 262 if (*reply_len != -1 && len != *reply_len)263 goto response_error;264 265 *reply = (unsigned char *) &u.get_c->request_id + off;266 *reply_len = len;267 268 return retval;269 270response_error:271 dev_err(&intf->dev, "RNDIS_MSG_QUERY(0x%08x) "272 "invalid response - off %d len %d\n",273 oid, off, len);274 return -EDOM;275}276 277/* same as usbnet_netdev_ops but MTU change not allowed */278static const struct net_device_ops rndis_netdev_ops = {279 .ndo_open = usbnet_open,280 .ndo_stop = usbnet_stop,281 .ndo_start_xmit = usbnet_start_xmit,282 .ndo_tx_timeout = usbnet_tx_timeout,283 .ndo_get_stats64 = dev_get_tstats64,284 .ndo_set_mac_address = eth_mac_addr,285 .ndo_validate_addr = eth_validate_addr,286};287 288int289generic_rndis_bind(struct usbnet *dev, struct usb_interface *intf, int flags)290{291 int retval;292 struct net_device *net = dev->net;293 struct cdc_state *info = (void *) &dev->data;294 union {295 void *buf;296 struct rndis_msg_hdr *header;297 struct rndis_init *init;298 struct rndis_init_c *init_c;299 struct rndis_query *get;300 struct rndis_query_c *get_c;301 struct rndis_set *set;302 struct rndis_set_c *set_c;303 struct rndis_halt *halt;304 } u;305 u32 tmp;306 __le32 phym_unspec, *phym;307 int reply_len;308 unsigned char *bp;309 310 /* we can't rely on i/o from stack working, or stack allocation */311 u.buf = kmalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);312 if (!u.buf)313 return -ENOMEM;314 retval = usbnet_generic_cdc_bind(dev, intf);315 if (retval < 0)316 goto fail;317 318 u.init->msg_type = cpu_to_le32(RNDIS_MSG_INIT);319 u.init->msg_len = cpu_to_le32(sizeof *u.init);320 u.init->major_version = cpu_to_le32(1);321 u.init->minor_version = cpu_to_le32(0);322 323 /* max transfer (in spec) is 0x4000 at full speed, but for324 * TX we'll stick to one Ethernet packet plus RNDIS framing.325 * For RX we handle drivers that zero-pad to end-of-packet.326 * Don't let userspace change these settings.327 *328 * NOTE: there still seems to be weirdness here, as if we need329 * to do some more things to make sure WinCE targets accept this.330 * They default to jumbograms of 8KB or 16KB, which is absurd331 * for such low data rates and which is also more than Linux332 * can usually expect to allocate for SKB data...333 */334 net->hard_header_len += sizeof (struct rndis_data_hdr);335 dev->hard_mtu = net->mtu + net->hard_header_len;336 337 dev->maxpacket = usb_maxpacket(dev->udev, dev->out);338 if (dev->maxpacket == 0) {339 netif_dbg(dev, probe, dev->net,340 "dev->maxpacket can't be 0\n");341 retval = -EINVAL;342 goto fail_and_release;343 }344 345 dev->rx_urb_size = dev->hard_mtu + (dev->maxpacket + 1);346 dev->rx_urb_size &= ~(dev->maxpacket - 1);347 u.init->max_transfer_size = cpu_to_le32(dev->rx_urb_size);348 349 net->netdev_ops = &rndis_netdev_ops;350 351 retval = rndis_command(dev, u.header, CONTROL_BUFFER_SIZE);352 if (unlikely(retval < 0)) {353 /* it might not even be an RNDIS device!! */354 dev_err(&intf->dev, "RNDIS init failed, %d\n", retval);355 goto fail_and_release;356 }357 tmp = le32_to_cpu(u.init_c->max_transfer_size);358 if (tmp < dev->hard_mtu) {359 if (tmp <= net->hard_header_len) {360 dev_err(&intf->dev,361 "dev can't take %u byte packets (max %u)\n",362 dev->hard_mtu, tmp);363 retval = -EINVAL;364 goto halt_fail_and_release;365 }366 dev_warn(&intf->dev,367 "dev can't take %u byte packets (max %u), "368 "adjusting MTU to %u\n",369 dev->hard_mtu, tmp, tmp - net->hard_header_len);370 dev->hard_mtu = tmp;371 net->mtu = dev->hard_mtu - net->hard_header_len;372 }373 374 /* REVISIT: peripheral "alignment" request is ignored ... */375 dev_dbg(&intf->dev,376 "hard mtu %u (%u from dev), rx buflen %zu, align %d\n",377 dev->hard_mtu, tmp, dev->rx_urb_size,378 1 << le32_to_cpu(u.init_c->packet_alignment));379 380 /* module has some device initialization code needs to be done right381 * after RNDIS_INIT */382 if (dev->driver_info->early_init &&383 dev->driver_info->early_init(dev) != 0)384 goto halt_fail_and_release;385 386 /* Check physical medium */387 phym = NULL;388 reply_len = sizeof *phym;389 retval = rndis_query(dev, intf, u.buf,390 RNDIS_OID_GEN_PHYSICAL_MEDIUM,391 reply_len, (void **)&phym, &reply_len);392 if (retval != 0 || !phym) {393 /* OID is optional so don't fail here. */394 phym_unspec = cpu_to_le32(RNDIS_PHYSICAL_MEDIUM_UNSPECIFIED);395 phym = &phym_unspec;396 }397 if ((flags & FLAG_RNDIS_PHYM_WIRELESS) &&398 le32_to_cpup(phym) != RNDIS_PHYSICAL_MEDIUM_WIRELESS_LAN) {399 netif_dbg(dev, probe, dev->net,400 "driver requires wireless physical medium, but device is not\n");401 retval = -ENODEV;402 goto halt_fail_and_release;403 }404 if ((flags & FLAG_RNDIS_PHYM_NOT_WIRELESS) &&405 le32_to_cpup(phym) == RNDIS_PHYSICAL_MEDIUM_WIRELESS_LAN) {406 netif_dbg(dev, probe, dev->net,407 "driver requires non-wireless physical medium, but device is wireless.\n");408 retval = -ENODEV;409 goto halt_fail_and_release;410 }411 412 /* Get designated host ethernet address */413 reply_len = ETH_ALEN;414 retval = rndis_query(dev, intf, u.buf,415 RNDIS_OID_802_3_PERMANENT_ADDRESS,416 48, (void **) &bp, &reply_len);417 if (unlikely(retval< 0)) {418 dev_err(&intf->dev, "rndis get ethaddr, %d\n", retval);419 goto halt_fail_and_release;420 }421 422 eth_hw_addr_set(net, bp);423 424 /* set a nonzero filter to enable data transfers */425 memset(u.set, 0, sizeof *u.set);426 u.set->msg_type = cpu_to_le32(RNDIS_MSG_SET);427 u.set->msg_len = cpu_to_le32(4 + sizeof *u.set);428 u.set->oid = cpu_to_le32(RNDIS_OID_GEN_CURRENT_PACKET_FILTER);429 u.set->len = cpu_to_le32(4);430 u.set->offset = cpu_to_le32((sizeof *u.set) - 8);431 *(__le32 *)(u.buf + sizeof *u.set) = cpu_to_le32(RNDIS_DEFAULT_FILTER);432 433 retval = rndis_command(dev, u.header, CONTROL_BUFFER_SIZE);434 if (unlikely(retval < 0)) {435 dev_err(&intf->dev, "rndis set packet filter, %d\n", retval);436 goto halt_fail_and_release;437 }438 439 retval = 0;440 441 kfree(u.buf);442 return retval;443 444halt_fail_and_release:445 memset(u.halt, 0, sizeof *u.halt);446 u.halt->msg_type = cpu_to_le32(RNDIS_MSG_HALT);447 u.halt->msg_len = cpu_to_le32(sizeof *u.halt);448 (void) rndis_command(dev, (void *)u.halt, CONTROL_BUFFER_SIZE);449fail_and_release:450 usb_set_intfdata(info->data, NULL);451 usb_driver_release_interface(driver_of(intf), info->data);452 info->data = NULL;453fail:454 kfree(u.buf);455 return retval;456}457EXPORT_SYMBOL_GPL(generic_rndis_bind);458 459static int rndis_bind(struct usbnet *dev, struct usb_interface *intf)460{461 return generic_rndis_bind(dev, intf, FLAG_RNDIS_PHYM_NOT_WIRELESS);462}463 464static int zte_rndis_bind(struct usbnet *dev, struct usb_interface *intf)465{466 int status = rndis_bind(dev, intf);467 468 if (!status && (dev->net->dev_addr[0] & 0x02))469 eth_hw_addr_random(dev->net);470 471 return status;472}473 474void rndis_unbind(struct usbnet *dev, struct usb_interface *intf)475{476 struct rndis_halt *halt;477 478 /* try to clear any rndis state/activity (no i/o from stack!) */479 halt = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);480 if (halt) {481 halt->msg_type = cpu_to_le32(RNDIS_MSG_HALT);482 halt->msg_len = cpu_to_le32(sizeof *halt);483 (void) rndis_command(dev, (void *)halt, CONTROL_BUFFER_SIZE);484 kfree(halt);485 }486 487 usbnet_cdc_unbind(dev, intf);488}489EXPORT_SYMBOL_GPL(rndis_unbind);490 491/*492 * DATA -- host must not write zlps493 */494int rndis_rx_fixup(struct usbnet *dev, struct sk_buff *skb)495{496 bool dst_mac_fixup;497 498 /* This check is no longer done by usbnet */499 if (skb->len < dev->net->hard_header_len)500 return 0;501 502 dst_mac_fixup = !!(dev->driver_info->data & RNDIS_DRIVER_DATA_DST_MAC_FIXUP);503 504 /* peripheral may have batched packets to us... */505 while (likely(skb->len)) {506 struct rndis_data_hdr *hdr = (void *)skb->data;507 struct sk_buff *skb2;508 u32 msg_type, msg_len, data_offset, data_len;509 510 msg_type = le32_to_cpu(hdr->msg_type);511 msg_len = le32_to_cpu(hdr->msg_len);512 data_offset = le32_to_cpu(hdr->data_offset);513 data_len = le32_to_cpu(hdr->data_len);514 515 /* don't choke if we see oob, per-packet data, etc */516 if (unlikely(msg_type != RNDIS_MSG_PACKET || skb->len < msg_len517 || (data_offset + data_len + 8) > msg_len)) {518 dev->net->stats.rx_frame_errors++;519 netdev_dbg(dev->net, "bad rndis message %d/%d/%d/%d, len %d\n",520 le32_to_cpu(hdr->msg_type),521 msg_len, data_offset, data_len, skb->len);522 return 0;523 }524 skb_pull(skb, 8 + data_offset);525 526 /* at most one packet left? */527 if (likely((data_len - skb->len) <= sizeof *hdr)) {528 skb_trim(skb, data_len);529 break;530 }531 532 /* try to return all the packets in the batch */533 skb2 = skb_clone(skb, GFP_ATOMIC);534 if (unlikely(!skb2))535 break;536 skb_pull(skb, msg_len - sizeof *hdr);537 skb_trim(skb2, data_len);538 539 if (unlikely(dst_mac_fixup))540 usbnet_cdc_zte_rx_fixup(dev, skb2);541 542 usbnet_skb_return(dev, skb2);543 }544 545 /* caller will usbnet_skb_return the remaining packet */546 if (unlikely(dst_mac_fixup))547 usbnet_cdc_zte_rx_fixup(dev, skb);548 549 return 1;550}551EXPORT_SYMBOL_GPL(rndis_rx_fixup);552 553struct sk_buff *554rndis_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags)555{556 struct rndis_data_hdr *hdr;557 struct sk_buff *skb2;558 unsigned len = skb->len;559 560 if (likely(!skb_cloned(skb))) {561 int room = skb_headroom(skb);562 563 /* enough head room as-is? */564 if (unlikely((sizeof *hdr) <= room))565 goto fill;566 567 /* enough room, but needs to be readjusted? */568 room += skb_tailroom(skb);569 if (likely((sizeof *hdr) <= room)) {570 skb->data = memmove(skb->head + sizeof *hdr,571 skb->data, len);572 skb_set_tail_pointer(skb, len);573 goto fill;574 }575 }576 577 /* create a new skb, with the correct size (and tailpad) */578 skb2 = skb_copy_expand(skb, sizeof *hdr, 1, flags);579 dev_kfree_skb_any(skb);580 if (unlikely(!skb2))581 return skb2;582 skb = skb2;583 584 /* fill out the RNDIS header. we won't bother trying to batch585 * packets; Linux minimizes wasted bandwidth through tx queues.586 */587fill:588 hdr = __skb_push(skb, sizeof *hdr);589 memset(hdr, 0, sizeof *hdr);590 hdr->msg_type = cpu_to_le32(RNDIS_MSG_PACKET);591 hdr->msg_len = cpu_to_le32(skb->len);592 hdr->data_offset = cpu_to_le32(sizeof(*hdr) - 8);593 hdr->data_len = cpu_to_le32(len);594 595 /* FIXME make the last packet always be short ... */596 return skb;597}598EXPORT_SYMBOL_GPL(rndis_tx_fixup);599 600 601static const struct driver_info rndis_info = {602 .description = "RNDIS device",603 .flags = FLAG_ETHER | FLAG_POINTTOPOINT | FLAG_FRAMING_RN | FLAG_NO_SETINT,604 .bind = rndis_bind,605 .unbind = rndis_unbind,606 .status = rndis_status,607 .rx_fixup = rndis_rx_fixup,608 .tx_fixup = rndis_tx_fixup,609};610 611static const struct driver_info rndis_poll_status_info = {612 .description = "RNDIS device (poll status before control)",613 .flags = FLAG_ETHER | FLAG_POINTTOPOINT | FLAG_FRAMING_RN | FLAG_NO_SETINT,614 .data = RNDIS_DRIVER_DATA_POLL_STATUS,615 .bind = rndis_bind,616 .unbind = rndis_unbind,617 .status = rndis_status,618 .rx_fixup = rndis_rx_fixup,619 .tx_fixup = rndis_tx_fixup,620};621 622static const struct driver_info zte_rndis_info = {623 .description = "ZTE RNDIS device",624 .flags = FLAG_ETHER | FLAG_POINTTOPOINT | FLAG_FRAMING_RN | FLAG_NO_SETINT,625 .data = RNDIS_DRIVER_DATA_DST_MAC_FIXUP,626 .bind = zte_rndis_bind,627 .unbind = rndis_unbind,628 .status = rndis_status,629 .rx_fixup = rndis_rx_fixup,630 .tx_fixup = rndis_tx_fixup,631};632 633/*-------------------------------------------------------------------------*/634 635static const struct usb_device_id products [] = {636{637 /* 2Wire HomePortal 1000SW */638 USB_DEVICE_AND_INTERFACE_INFO(0x1630, 0x0042,639 USB_CLASS_COMM, 2 /* ACM */, 0x0ff),640 .driver_info = (unsigned long) &rndis_poll_status_info,641}, {642 /* Hytera Communications DMR radios' "Radio to PC Network" */643 USB_VENDOR_AND_INTERFACE_INFO(0x238b,644 USB_CLASS_COMM, 2 /* ACM */, 0x0ff),645 .driver_info = (unsigned long)&rndis_info,646}, {647 /* ZTE WWAN modules */648 USB_VENDOR_AND_INTERFACE_INFO(0x19d2,649 USB_CLASS_WIRELESS_CONTROLLER, 1, 3),650 .driver_info = (unsigned long)&zte_rndis_info,651}, {652 /* ZTE WWAN modules, ACM flavour */653 USB_VENDOR_AND_INTERFACE_INFO(0x19d2,654 USB_CLASS_COMM, 2 /* ACM */, 0x0ff),655 .driver_info = (unsigned long)&zte_rndis_info,656}, {657 /* RNDIS is MSFT's un-official variant of CDC ACM */658 USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),659 .driver_info = (unsigned long) &rndis_info,660}, {661 /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */662 USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),663 .driver_info = (unsigned long) &rndis_poll_status_info,664}, {665 /* RNDIS for tethering */666 USB_INTERFACE_INFO(USB_CLASS_WIRELESS_CONTROLLER, 1, 3),667 .driver_info = (unsigned long) &rndis_info,668}, {669 /* Novatel Verizon USB730L */670 USB_INTERFACE_INFO(USB_CLASS_MISC, 4, 1),671 .driver_info = (unsigned long) &rndis_info,672},673 { }, // END674};675MODULE_DEVICE_TABLE(usb, products);676 677static struct usb_driver rndis_driver = {678 .name = "rndis_host",679 .id_table = products,680 .probe = usbnet_probe,681 .disconnect = usbnet_disconnect,682 .suspend = usbnet_suspend,683 .resume = usbnet_resume,684 .disable_hub_initiated_lpm = 1,685};686 687module_usb_driver(rndis_driver);688 689MODULE_AUTHOR("David Brownell");690MODULE_DESCRIPTION("USB Host side RNDIS driver");691MODULE_LICENSE("GPL");692