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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Copyright (c) 2012 Smith Micro Software, Inc.4 * Copyright (c) 2012 Bjørn Mork <bjorn@mork.no>5 *6 * This driver is based on and reuse most of cdc_ncm, which is7 * Copyright (C) ST-Ericsson 2010-20128 */9 10#include <linux/module.h>11#include <linux/netdevice.h>12#include <linux/ethtool.h>13#include <linux/if_vlan.h>14#include <linux/ip.h>15#include <linux/mii.h>16#include <linux/usb.h>17#include <linux/usb/cdc.h>18#include <linux/usb/usbnet.h>19#include <linux/usb/cdc-wdm.h>20#include <linux/usb/cdc_ncm.h>21#include <net/ipv6.h>22#include <net/addrconf.h>23#include <net/ipv6_stubs.h>24#include <net/ndisc.h>25 26/* alternative VLAN for IP session 0 if not untagged */27#define MBIM_IPS0_VID 409428 29/* driver specific data - must match cdc_ncm usage */30struct cdc_mbim_state {31 struct cdc_ncm_ctx *ctx;32 atomic_t pmcount;33 struct usb_driver *subdriver;34 unsigned long _unused;35 unsigned long flags;36};37 38/* flags for the cdc_mbim_state.flags field */39enum cdc_mbim_flags {40 FLAG_IPS0_VLAN = 1 << 0, /* IP session 0 is tagged */41};42 43/* using a counter to merge subdriver requests with our own into a combined state */44static int cdc_mbim_manage_power(struct usbnet *dev, int on)45{46 struct cdc_mbim_state *info = (void *)&dev->data;47 int rv = 0;48 49 dev_dbg(&dev->intf->dev, "%s() pmcount=%d, on=%d\n", __func__, atomic_read(&info->pmcount), on);50 51 if ((on && atomic_add_return(1, &info->pmcount) == 1) || (!on && atomic_dec_and_test(&info->pmcount))) {52 /* need autopm_get/put here to ensure the usbcore sees the new value */53 rv = usb_autopm_get_interface(dev->intf);54 dev->intf->needs_remote_wakeup = on;55 if (!rv)56 usb_autopm_put_interface(dev->intf);57 }58 return 0;59}60 61static int cdc_mbim_wdm_manage_power(struct usb_interface *intf, int status)62{63 struct usbnet *dev = usb_get_intfdata(intf);64 65 /* can be called while disconnecting */66 if (!dev)67 return 0;68 69 return cdc_mbim_manage_power(dev, status);70}71 72static int cdc_mbim_rx_add_vid(struct net_device *netdev, __be16 proto, u16 vid)73{74 struct usbnet *dev = netdev_priv(netdev);75 struct cdc_mbim_state *info = (void *)&dev->data;76 77 /* creation of this VLAN is a request to tag IP session 0 */78 if (vid == MBIM_IPS0_VID)79 info->flags |= FLAG_IPS0_VLAN;80 else81 if (vid >= 512) /* we don't map these to MBIM session */82 return -EINVAL;83 return 0;84}85 86static int cdc_mbim_rx_kill_vid(struct net_device *netdev, __be16 proto, u16 vid)87{88 struct usbnet *dev = netdev_priv(netdev);89 struct cdc_mbim_state *info = (void *)&dev->data;90 91 /* this is a request for an untagged IP session 0 */92 if (vid == MBIM_IPS0_VID)93 info->flags &= ~FLAG_IPS0_VLAN;94 return 0;95}96 97static const struct net_device_ops cdc_mbim_netdev_ops = {98 .ndo_open = usbnet_open,99 .ndo_stop = usbnet_stop,100 .ndo_start_xmit = usbnet_start_xmit,101 .ndo_tx_timeout = usbnet_tx_timeout,102 .ndo_get_stats64 = dev_get_tstats64,103 .ndo_change_mtu = cdc_ncm_change_mtu,104 .ndo_set_mac_address = eth_mac_addr,105 .ndo_validate_addr = eth_validate_addr,106 .ndo_vlan_rx_add_vid = cdc_mbim_rx_add_vid,107 .ndo_vlan_rx_kill_vid = cdc_mbim_rx_kill_vid,108};109 110/* Change the control interface altsetting and update the .driver_info111 * pointer if the matching entry after changing class codes points to112 * a different struct113 */114static int cdc_mbim_set_ctrlalt(struct usbnet *dev, struct usb_interface *intf, u8 alt)115{116 struct usb_driver *driver = to_usb_driver(intf->dev.driver);117 const struct usb_device_id *id;118 struct driver_info *info;119 int ret;120 121 ret = usb_set_interface(dev->udev,122 intf->cur_altsetting->desc.bInterfaceNumber,123 alt);124 if (ret)125 return ret;126 127 id = usb_match_id(intf, driver->id_table);128 if (!id)129 return -ENODEV;130 131 info = (struct driver_info *)id->driver_info;132 if (info != dev->driver_info) {133 dev_dbg(&intf->dev, "driver_info updated to '%s'\n",134 info->description);135 dev->driver_info = info;136 }137 return 0;138}139 140static int cdc_mbim_bind(struct usbnet *dev, struct usb_interface *intf)141{142 struct cdc_ncm_ctx *ctx;143 struct usb_driver *subdriver = ERR_PTR(-ENODEV);144 int ret = -ENODEV;145 u8 data_altsetting = 1;146 struct cdc_mbim_state *info = (void *)&dev->data;147 148 /* should we change control altsetting on a NCM/MBIM function? */149 if (cdc_ncm_select_altsetting(intf) == CDC_NCM_COMM_ALTSETTING_MBIM) {150 data_altsetting = CDC_NCM_DATA_ALTSETTING_MBIM;151 ret = cdc_mbim_set_ctrlalt(dev, intf, CDC_NCM_COMM_ALTSETTING_MBIM);152 if (ret)153 goto err;154 ret = -ENODEV;155 }156 157 /* we will hit this for NCM/MBIM functions if prefer_mbim is false */158 if (!cdc_ncm_comm_intf_is_mbim(intf->cur_altsetting))159 goto err;160 161 ret = cdc_ncm_bind_common(dev, intf, data_altsetting, dev->driver_info->data);162 if (ret)163 goto err;164 165 ctx = info->ctx;166 167 /* The MBIM descriptor and the status endpoint are required */168 if (ctx->mbim_desc && dev->status)169 subdriver = usb_cdc_wdm_register(ctx->control,170 &dev->status->desc,171 le16_to_cpu(ctx->mbim_desc->wMaxControlMessage),172 WWAN_PORT_MBIM,173 cdc_mbim_wdm_manage_power);174 if (IS_ERR(subdriver)) {175 ret = PTR_ERR(subdriver);176 cdc_ncm_unbind(dev, intf);177 goto err;178 }179 180 /* can't let usbnet use the interrupt endpoint */181 dev->status = NULL;182 info->subdriver = subdriver;183 184 /* MBIM cannot do ARP */185 dev->net->flags |= IFF_NOARP;186 187 /* no need to put the VLAN tci in the packet headers */188 dev->net->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_FILTER;189 190 /* monitor VLAN additions and removals */191 dev->net->netdev_ops = &cdc_mbim_netdev_ops;192err:193 return ret;194}195 196static void cdc_mbim_unbind(struct usbnet *dev, struct usb_interface *intf)197{198 struct cdc_mbim_state *info = (void *)&dev->data;199 struct cdc_ncm_ctx *ctx = info->ctx;200 201 /* disconnect subdriver from control interface */202 if (info->subdriver && info->subdriver->disconnect)203 info->subdriver->disconnect(ctx->control);204 info->subdriver = NULL;205 206 /* let NCM unbind clean up both control and data interface */207 cdc_ncm_unbind(dev, intf);208}209 210/* verify that the ethernet protocol is IPv4 or IPv6 */211static bool is_ip_proto(__be16 proto)212{213 switch (proto) {214 case htons(ETH_P_IP):215 case htons(ETH_P_IPV6):216 return true;217 }218 return false;219}220 221static struct sk_buff *cdc_mbim_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags)222{223 struct sk_buff *skb_out;224 struct cdc_mbim_state *info = (void *)&dev->data;225 struct cdc_ncm_ctx *ctx = info->ctx;226 __le32 sign = cpu_to_le32(USB_CDC_MBIM_NDP16_IPS_SIGN);227 u16 tci = 0;228 bool is_ip;229 u8 *c;230 231 if (!ctx)232 goto error;233 234 if (skb) {235 if (skb->len <= ETH_HLEN)236 goto error;237 238 /* Some applications using e.g. packet sockets will239 * bypass the VLAN acceleration and create tagged240 * ethernet frames directly. We primarily look for241 * the accelerated out-of-band tag, but fall back if242 * required243 */244 skb_reset_mac_header(skb);245 if (vlan_get_tag(skb, &tci) < 0 && skb->len > VLAN_ETH_HLEN &&246 __vlan_get_tag(skb, &tci) == 0) {247 is_ip = is_ip_proto(vlan_eth_hdr(skb)->h_vlan_encapsulated_proto);248 skb_pull(skb, VLAN_ETH_HLEN);249 } else {250 is_ip = is_ip_proto(eth_hdr(skb)->h_proto);251 skb_pull(skb, ETH_HLEN);252 }253 254 /* Is IP session <0> tagged too? */255 if (info->flags & FLAG_IPS0_VLAN) {256 /* drop all untagged packets */257 if (!tci)258 goto error;259 /* map MBIM_IPS0_VID to IPS<0> */260 if (tci == MBIM_IPS0_VID)261 tci = 0;262 }263 264 /* mapping VLANs to MBIM sessions:265 * no tag => IPS session <0> if !FLAG_IPS0_VLAN266 * 1 - 255 => IPS session <vlanid>267 * 256 - 511 => DSS session <vlanid - 256>268 * 512 - 4093 => unsupported, drop269 * 4094 => IPS session <0> if FLAG_IPS0_VLAN270 */271 272 switch (tci & 0x0f00) {273 case 0x0000: /* VLAN ID 0 - 255 */274 if (!is_ip)275 goto error;276 c = (u8 *)&sign;277 c[3] = tci;278 break;279 case 0x0100: /* VLAN ID 256 - 511 */280 if (is_ip)281 goto error;282 sign = cpu_to_le32(USB_CDC_MBIM_NDP16_DSS_SIGN);283 c = (u8 *)&sign;284 c[3] = tci;285 break;286 default:287 netif_err(dev, tx_err, dev->net,288 "unsupported tci=0x%04x\n", tci);289 goto error;290 }291 }292 293 spin_lock_bh(&ctx->mtx);294 skb_out = cdc_ncm_fill_tx_frame(dev, skb, sign);295 spin_unlock_bh(&ctx->mtx);296 return skb_out;297 298error:299 if (skb)300 dev_kfree_skb_any(skb);301 302 return NULL;303}304 305/* Some devices are known to send Neighbor Solicitation messages and306 * require Neighbor Advertisement replies. The IPv6 core will not307 * respond since IFF_NOARP is set, so we must handle them ourselves.308 */309static void do_neigh_solicit(struct usbnet *dev, u8 *buf, u16 tci)310{311 struct ipv6hdr *iph = (void *)buf;312 struct nd_msg *msg = (void *)(iph + 1);313 struct net_device *netdev;314 struct inet6_dev *in6_dev;315 bool is_router;316 317 /* we'll only respond to requests from unicast addresses to318 * our solicited node addresses.319 */320 if (!ipv6_addr_is_solict_mult(&iph->daddr) ||321 !(ipv6_addr_type(&iph->saddr) & IPV6_ADDR_UNICAST))322 return;323 324 /* need to send the NA on the VLAN dev, if any */325 rcu_read_lock();326 if (tci) {327 netdev = __vlan_find_dev_deep_rcu(dev->net, htons(ETH_P_8021Q),328 tci);329 if (!netdev) {330 rcu_read_unlock();331 return;332 }333 } else {334 netdev = dev->net;335 }336 dev_hold(netdev);337 rcu_read_unlock();338 339 in6_dev = in6_dev_get(netdev);340 if (!in6_dev)341 goto out;342 is_router = !!READ_ONCE(in6_dev->cnf.forwarding);343 in6_dev_put(in6_dev);344 345 /* ipv6_stub != NULL if in6_dev_get returned an inet6_dev */346 ipv6_stub->ndisc_send_na(netdev, &iph->saddr, &msg->target,347 is_router /* router */,348 true /* solicited */,349 false /* override */,350 true /* inc_opt */);351out:352 dev_put(netdev);353}354 355static bool is_neigh_solicit(u8 *buf, size_t len)356{357 struct ipv6hdr *iph = (void *)buf;358 struct nd_msg *msg = (void *)(iph + 1);359 360 return (len >= sizeof(struct ipv6hdr) + sizeof(struct nd_msg) &&361 iph->nexthdr == IPPROTO_ICMPV6 &&362 msg->icmph.icmp6_code == 0 &&363 msg->icmph.icmp6_type == NDISC_NEIGHBOUR_SOLICITATION);364}365 366 367static struct sk_buff *cdc_mbim_process_dgram(struct usbnet *dev, u8 *buf, size_t len, u16 tci)368{369 __be16 proto = htons(ETH_P_802_3);370 struct sk_buff *skb = NULL;371 372 if (tci < 256 || tci == MBIM_IPS0_VID) { /* IPS session? */373 if (len < sizeof(struct iphdr))374 goto err;375 376 switch (*buf & 0xf0) {377 case 0x40:378 proto = htons(ETH_P_IP);379 break;380 case 0x60:381 if (is_neigh_solicit(buf, len))382 do_neigh_solicit(dev, buf, tci);383 proto = htons(ETH_P_IPV6);384 break;385 default:386 goto err;387 }388 }389 390 skb = netdev_alloc_skb_ip_align(dev->net, len + ETH_HLEN);391 if (!skb)392 goto err;393 394 /* add an ethernet header */395 skb_put(skb, ETH_HLEN);396 skb_reset_mac_header(skb);397 eth_hdr(skb)->h_proto = proto;398 eth_zero_addr(eth_hdr(skb)->h_source);399 memcpy(eth_hdr(skb)->h_dest, dev->net->dev_addr, ETH_ALEN);400 401 /* add datagram */402 skb_put_data(skb, buf, len);403 404 /* map MBIM session to VLAN */405 if (tci)406 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tci);407err:408 return skb;409}410 411static int cdc_mbim_rx_fixup(struct usbnet *dev, struct sk_buff *skb_in)412{413 struct sk_buff *skb;414 struct cdc_mbim_state *info = (void *)&dev->data;415 struct cdc_ncm_ctx *ctx = info->ctx;416 int len;417 int nframes;418 int x;419 int offset;420 struct usb_cdc_ncm_ndp16 *ndp16;421 struct usb_cdc_ncm_dpe16 *dpe16;422 int ndpoffset;423 int loopcount = 50; /* arbitrary max preventing infinite loop */424 u32 payload = 0;425 u8 *c;426 u16 tci;427 428 ndpoffset = cdc_ncm_rx_verify_nth16(ctx, skb_in);429 if (ndpoffset < 0)430 goto error;431 432next_ndp:433 nframes = cdc_ncm_rx_verify_ndp16(skb_in, ndpoffset);434 if (nframes < 0)435 goto error;436 437 ndp16 = (struct usb_cdc_ncm_ndp16 *)(skb_in->data + ndpoffset);438 439 switch (ndp16->dwSignature & cpu_to_le32(0x00ffffff)) {440 case cpu_to_le32(USB_CDC_MBIM_NDP16_IPS_SIGN):441 c = (u8 *)&ndp16->dwSignature;442 tci = c[3];443 /* tag IPS<0> packets too if MBIM_IPS0_VID exists */444 if (!tci && info->flags & FLAG_IPS0_VLAN)445 tci = MBIM_IPS0_VID;446 break;447 case cpu_to_le32(USB_CDC_MBIM_NDP16_DSS_SIGN):448 c = (u8 *)&ndp16->dwSignature;449 tci = c[3] + 256;450 break;451 default:452 netif_dbg(dev, rx_err, dev->net,453 "unsupported NDP signature <0x%08x>\n",454 le32_to_cpu(ndp16->dwSignature));455 goto err_ndp;456 457 }458 459 dpe16 = ndp16->dpe16;460 for (x = 0; x < nframes; x++, dpe16++) {461 offset = le16_to_cpu(dpe16->wDatagramIndex);462 len = le16_to_cpu(dpe16->wDatagramLength);463 464 /*465 * CDC NCM ch. 3.7466 * All entries after first NULL entry are to be ignored467 */468 if ((offset == 0) || (len == 0)) {469 if (!x)470 goto err_ndp; /* empty NTB */471 break;472 }473 474 /* sanity checking */475 if (((offset + len) > skb_in->len) || (len > ctx->rx_max)) {476 netif_dbg(dev, rx_err, dev->net,477 "invalid frame detected (ignored) offset[%u]=%u, length=%u, skb=%p\n",478 x, offset, len, skb_in);479 if (!x)480 goto err_ndp;481 break;482 } else {483 skb = cdc_mbim_process_dgram(dev, skb_in->data + offset, len, tci);484 if (!skb)485 goto error;486 usbnet_skb_return(dev, skb);487 payload += len; /* count payload bytes in this NTB */488 }489 }490err_ndp:491 /* are there more NDPs to process? */492 ndpoffset = le16_to_cpu(ndp16->wNextNdpIndex);493 if (ndpoffset && loopcount--)494 goto next_ndp;495 496 /* update stats */497 ctx->rx_overhead += skb_in->len - payload;498 ctx->rx_ntbs++;499 500 return 1;501error:502 return 0;503}504 505static int cdc_mbim_suspend(struct usb_interface *intf, pm_message_t message)506{507 int ret = -ENODEV;508 struct usbnet *dev = usb_get_intfdata(intf);509 struct cdc_mbim_state *info = (void *)&dev->data;510 struct cdc_ncm_ctx *ctx = info->ctx;511 512 if (!ctx)513 goto error;514 515 /*516 * Both usbnet_suspend() and subdriver->suspend() MUST return 0517 * in system sleep context, otherwise, the resume callback has518 * to recover device from previous suspend failure.519 */520 ret = usbnet_suspend(intf, message);521 if (ret < 0)522 goto error;523 524 if (intf == ctx->control && info->subdriver && info->subdriver->suspend)525 ret = info->subdriver->suspend(intf, message);526 if (ret < 0)527 usbnet_resume(intf);528 529error:530 return ret;531}532 533static int cdc_mbim_resume(struct usb_interface *intf)534{535 int ret = 0;536 struct usbnet *dev = usb_get_intfdata(intf);537 struct cdc_mbim_state *info = (void *)&dev->data;538 struct cdc_ncm_ctx *ctx = info->ctx;539 bool callsub = (intf == ctx->control && info->subdriver && info->subdriver->resume);540 541 if (callsub)542 ret = info->subdriver->resume(intf);543 if (ret < 0)544 goto err;545 ret = usbnet_resume(intf);546 if (ret < 0 && callsub)547 info->subdriver->suspend(intf, PMSG_SUSPEND);548err:549 return ret;550}551 552static const struct driver_info cdc_mbim_info = {553 .description = "CDC MBIM",554 .flags = FLAG_NO_SETINT | FLAG_MULTI_PACKET | FLAG_WWAN,555 .bind = cdc_mbim_bind,556 .unbind = cdc_mbim_unbind,557 .manage_power = cdc_mbim_manage_power,558 .rx_fixup = cdc_mbim_rx_fixup,559 .tx_fixup = cdc_mbim_tx_fixup,560};561 562/* MBIM and NCM devices should not need a ZLP after NTBs with563 * dwNtbOutMaxSize length. Nevertheless, a number of devices from564 * different vendor IDs will fail unless we send ZLPs, forcing us565 * to make this the default.566 *567 * This default may cause a performance penalty for spec conforming568 * devices wanting to take advantage of optimizations possible without569 * ZLPs. A whitelist is added in an attempt to avoid this for devices570 * known to conform to the MBIM specification.571 *572 * All known devices supporting NCM compatibility mode are also573 * conforming to the NCM and MBIM specifications. For this reason, the574 * NCM subclass entry is also in the ZLP whitelist.575 */576static const struct driver_info cdc_mbim_info_zlp = {577 .description = "CDC MBIM",578 .flags = FLAG_NO_SETINT | FLAG_MULTI_PACKET | FLAG_WWAN | FLAG_SEND_ZLP,579 .bind = cdc_mbim_bind,580 .unbind = cdc_mbim_unbind,581 .manage_power = cdc_mbim_manage_power,582 .rx_fixup = cdc_mbim_rx_fixup,583 .tx_fixup = cdc_mbim_tx_fixup,584};585 586/* The spefication explicitly allows NDPs to be placed anywhere in the587 * frame, but some devices fail unless the NDP is placed after the IP588 * packets. Using the CDC_NCM_FLAG_NDP_TO_END flags to force this589 * behaviour.590 *591 * Note: The current implementation of this feature restricts each NTB592 * to a single NDP, implying that multiplexed sessions cannot share an593 * NTB. This might affect performance for multiplexed sessions.594 */595static const struct driver_info cdc_mbim_info_ndp_to_end = {596 .description = "CDC MBIM",597 .flags = FLAG_NO_SETINT | FLAG_MULTI_PACKET | FLAG_WWAN,598 .bind = cdc_mbim_bind,599 .unbind = cdc_mbim_unbind,600 .manage_power = cdc_mbim_manage_power,601 .rx_fixup = cdc_mbim_rx_fixup,602 .tx_fixup = cdc_mbim_tx_fixup,603 .data = CDC_NCM_FLAG_NDP_TO_END,604};605 606/* Some modems (e.g. Telit LE922A6) do not work properly with altsetting607 * toggle done in cdc_ncm_bind_common. CDC_MBIM_FLAG_AVOID_ALTSETTING_TOGGLE608 * flag is used to avoid this procedure.609 */610static const struct driver_info cdc_mbim_info_avoid_altsetting_toggle = {611 .description = "CDC MBIM",612 .flags = FLAG_NO_SETINT | FLAG_MULTI_PACKET | FLAG_WWAN | FLAG_SEND_ZLP,613 .bind = cdc_mbim_bind,614 .unbind = cdc_mbim_unbind,615 .manage_power = cdc_mbim_manage_power,616 .rx_fixup = cdc_mbim_rx_fixup,617 .tx_fixup = cdc_mbim_tx_fixup,618 .data = CDC_MBIM_FLAG_AVOID_ALTSETTING_TOGGLE,619};620 621static const struct usb_device_id mbim_devs[] = {622 /* This duplicate NCM entry is intentional. MBIM devices can623 * be disguised as NCM by default, and this is necessary to624 * allow us to bind the correct driver_info to such devices.625 *626 * bind() will sort out this for us, selecting the correct627 * entry and reject the other628 */629 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_NCM, USB_CDC_PROTO_NONE),630 .driver_info = (unsigned long)&cdc_mbim_info,631 },632 /* ZLP conformance whitelist: All Ericsson MBIM devices */633 { USB_VENDOR_AND_INTERFACE_INFO(0x0bdb, USB_CLASS_COMM, USB_CDC_SUBCLASS_MBIM, USB_CDC_PROTO_NONE),634 .driver_info = (unsigned long)&cdc_mbim_info,635 },636 637 /* Some Huawei devices, ME906s-158 (12d1:15c1) and E3372638 * (12d1:157d), are known to fail unless the NDP is placed639 * after the IP packets. Applying the quirk to all Huawei640 * devices is broader than necessary, but harmless.641 */642 { USB_VENDOR_AND_INTERFACE_INFO(0x12d1, USB_CLASS_COMM, USB_CDC_SUBCLASS_MBIM, USB_CDC_PROTO_NONE),643 .driver_info = (unsigned long)&cdc_mbim_info_ndp_to_end,644 },645 646 /* The HP lt4132 (03f0:a31d) is a rebranded Huawei ME906s-158,647 * therefore it too requires the above "NDP to end" quirk.648 */649 { USB_DEVICE_AND_INTERFACE_INFO(0x03f0, 0xa31d, USB_CLASS_COMM, USB_CDC_SUBCLASS_MBIM, USB_CDC_PROTO_NONE),650 .driver_info = (unsigned long)&cdc_mbim_info_ndp_to_end,651 },652 653 /* Telit LE922A6 in MBIM composition */654 { USB_DEVICE_AND_INTERFACE_INFO(0x1bc7, 0x1041, USB_CLASS_COMM, USB_CDC_SUBCLASS_MBIM, USB_CDC_PROTO_NONE),655 .driver_info = (unsigned long)&cdc_mbim_info_avoid_altsetting_toggle,656 },657 658 /* Telit LN920 */659 { USB_DEVICE_AND_INTERFACE_INFO(0x1bc7, 0x1061, USB_CLASS_COMM, USB_CDC_SUBCLASS_MBIM, USB_CDC_PROTO_NONE),660 .driver_info = (unsigned long)&cdc_mbim_info_avoid_altsetting_toggle,661 },662 663 /* Telit FN990 */664 { USB_DEVICE_AND_INTERFACE_INFO(0x1bc7, 0x1071, USB_CLASS_COMM, USB_CDC_SUBCLASS_MBIM, USB_CDC_PROTO_NONE),665 .driver_info = (unsigned long)&cdc_mbim_info_avoid_altsetting_toggle,666 },667 668 /* Telit FE990 */669 { USB_DEVICE_AND_INTERFACE_INFO(0x1bc7, 0x1081, USB_CLASS_COMM, USB_CDC_SUBCLASS_MBIM, USB_CDC_PROTO_NONE),670 .driver_info = (unsigned long)&cdc_mbim_info_avoid_altsetting_toggle,671 },672 673 /* default entry */674 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_MBIM, USB_CDC_PROTO_NONE),675 .driver_info = (unsigned long)&cdc_mbim_info_zlp,676 },677 {678 },679};680MODULE_DEVICE_TABLE(usb, mbim_devs);681 682static struct usb_driver cdc_mbim_driver = {683 .name = "cdc_mbim",684 .id_table = mbim_devs,685 .probe = usbnet_probe,686 .disconnect = usbnet_disconnect,687 .suspend = cdc_mbim_suspend,688 .resume = cdc_mbim_resume,689 .reset_resume = cdc_mbim_resume,690 .supports_autosuspend = 1,691 .disable_hub_initiated_lpm = 1,692};693module_usb_driver(cdc_mbim_driver);694 695MODULE_AUTHOR("Greg Suarez <gsuarez@smithmicro.com>");696MODULE_AUTHOR("Bjørn Mork <bjorn@mork.no>");697MODULE_DESCRIPTION("USB CDC MBIM host driver");698MODULE_LICENSE("GPL");699