| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * Copyright (c) 2012 Smith Micro Software, Inc. |
| * Copyright (c) 2012 Bjørn Mork <bjorn@mork.no> |
| * |
| * This driver is based on and reuse most of cdc_ncm, which is |
| * Copyright (C) ST-Ericsson 2010-2012 |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/netdevice.h> |
| #include <linux/ethtool.h> |
| #include <linux/if_vlan.h> |
| #include <linux/ip.h> |
| #include <linux/mii.h> |
| #include <linux/usb.h> |
| #include <linux/usb/cdc.h> |
| #include <linux/usb/usbnet.h> |
| #include <linux/usb/cdc-wdm.h> |
| #include <linux/usb/cdc_ncm.h> |
| #include <net/ipv6.h> |
| #include <net/addrconf.h> |
| #include <net/ipv6_stubs.h> |
| |
| /* alternative VLAN for IP session 0 if not untagged */ |
| #define MBIM_IPS0_VID 4094 |
| |
| /* driver specific data - must match cdc_ncm usage */ |
| struct cdc_mbim_state { |
| struct cdc_ncm_ctx *ctx; |
| atomic_t pmcount; |
| struct usb_driver *subdriver; |
| unsigned long _unused; |
| unsigned long flags; |
| }; |
| |
| /* flags for the cdc_mbim_state.flags field */ |
| enum cdc_mbim_flags { |
| FLAG_IPS0_VLAN = 1 << 0, /* IP session 0 is tagged */ |
| }; |
| |
| /* using a counter to merge subdriver requests with our own into a combined state */ |
| static int cdc_mbim_manage_power(struct usbnet *dev, int on) |
| { |
| struct cdc_mbim_state *info = (void *)&dev->data; |
| int rv = 0; |
| |
| dev_dbg(&dev->intf->dev, "%s() pmcount=%d, on=%d\n", __func__, atomic_read(&info->pmcount), on); |
| |
| if ((on && atomic_add_return(1, &info->pmcount) == 1) || (!on && atomic_dec_and_test(&info->pmcount))) { |
| /* need autopm_get/put here to ensure the usbcore sees the new value */ |
| rv = usb_autopm_get_interface(dev->intf); |
| dev->intf->needs_remote_wakeup = on; |
| if (!rv) |
| usb_autopm_put_interface(dev->intf); |
| } |
| return 0; |
| } |
| |
| static int cdc_mbim_wdm_manage_power(struct usb_interface *intf, int status) |
| { |
| struct usbnet *dev = usb_get_intfdata(intf); |
| |
| /* can be called while disconnecting */ |
| if (!dev) |
| return 0; |
| |
| return cdc_mbim_manage_power(dev, status); |
| } |
| |
| static int cdc_mbim_rx_add_vid(struct net_device *netdev, __be16 proto, u16 vid) |
| { |
| struct usbnet *dev = netdev_priv(netdev); |
| struct cdc_mbim_state *info = (void *)&dev->data; |
| |
| /* creation of this VLAN is a request to tag IP session 0 */ |
| if (vid == MBIM_IPS0_VID) |
| info->flags |= FLAG_IPS0_VLAN; |
| else |
| if (vid >= 512) /* we don't map these to MBIM session */ |
| return -EINVAL; |
| return 0; |
| } |
| |
| static int cdc_mbim_rx_kill_vid(struct net_device *netdev, __be16 proto, u16 vid) |
| { |
| struct usbnet *dev = netdev_priv(netdev); |
| struct cdc_mbim_state *info = (void *)&dev->data; |
| |
| /* this is a request for an untagged IP session 0 */ |
| if (vid == MBIM_IPS0_VID) |
| info->flags &= ~FLAG_IPS0_VLAN; |
| return 0; |
| } |
| |
| static const struct net_device_ops cdc_mbim_netdev_ops = { |
| .ndo_open = usbnet_open, |
| .ndo_stop = usbnet_stop, |
| .ndo_start_xmit = usbnet_start_xmit, |
| .ndo_tx_timeout = usbnet_tx_timeout, |
| .ndo_get_stats64 = usbnet_get_stats64, |
| .ndo_change_mtu = cdc_ncm_change_mtu, |
| .ndo_set_mac_address = eth_mac_addr, |
| .ndo_validate_addr = eth_validate_addr, |
| .ndo_vlan_rx_add_vid = cdc_mbim_rx_add_vid, |
| .ndo_vlan_rx_kill_vid = cdc_mbim_rx_kill_vid, |
| }; |
| |
| /* Change the control interface altsetting and update the .driver_info |
| * pointer if the matching entry after changing class codes points to |
| * a different struct |
| */ |
| static int cdc_mbim_set_ctrlalt(struct usbnet *dev, struct usb_interface *intf, u8 alt) |
| { |
| struct usb_driver *driver = to_usb_driver(intf->dev.driver); |
| const struct usb_device_id *id; |
| struct driver_info *info; |
| int ret; |
| |
| ret = usb_set_interface(dev->udev, |
| intf->cur_altsetting->desc.bInterfaceNumber, |
| alt); |
| if (ret) |
| return ret; |
| |
| id = usb_match_id(intf, driver->id_table); |
| if (!id) |
| return -ENODEV; |
| |
| info = (struct driver_info *)id->driver_info; |
| if (info != dev->driver_info) { |
| dev_dbg(&intf->dev, "driver_info updated to '%s'\n", |
| info->description); |
| dev->driver_info = info; |
| } |
| return 0; |
| } |
| |
| static int cdc_mbim_bind(struct usbnet *dev, struct usb_interface *intf) |
| { |
| struct cdc_ncm_ctx *ctx; |
| struct usb_driver *subdriver = ERR_PTR(-ENODEV); |
| int ret = -ENODEV; |
| u8 data_altsetting = 1; |
| struct cdc_mbim_state *info = (void *)&dev->data; |
| |
| /* should we change control altsetting on a NCM/MBIM function? */ |
| if (cdc_ncm_select_altsetting(intf) == CDC_NCM_COMM_ALTSETTING_MBIM) { |
| data_altsetting = CDC_NCM_DATA_ALTSETTING_MBIM; |
| ret = cdc_mbim_set_ctrlalt(dev, intf, CDC_NCM_COMM_ALTSETTING_MBIM); |
| if (ret) |
| goto err; |
| ret = -ENODEV; |
| } |
| |
| /* we will hit this for NCM/MBIM functions if prefer_mbim is false */ |
| if (!cdc_ncm_comm_intf_is_mbim(intf->cur_altsetting)) |
| goto err; |
| |
| ret = cdc_ncm_bind_common(dev, intf, data_altsetting, dev->driver_info->data); |
| if (ret) |
| goto err; |
| |
| ctx = info->ctx; |
| |
| /* The MBIM descriptor and the status endpoint are required */ |
| if (ctx->mbim_desc && dev->status) |
| subdriver = usb_cdc_wdm_register(ctx->control, |
| &dev->status->desc, |
| le16_to_cpu(ctx->mbim_desc->wMaxControlMessage), |
| cdc_mbim_wdm_manage_power); |
| if (IS_ERR(subdriver)) { |
| ret = PTR_ERR(subdriver); |
| cdc_ncm_unbind(dev, intf); |
| goto err; |
| } |
| |
| /* can't let usbnet use the interrupt endpoint */ |
| dev->status = NULL; |
| info->subdriver = subdriver; |
| |
| /* MBIM cannot do ARP */ |
| dev->net->flags |= IFF_NOARP; |
| |
| /* no need to put the VLAN tci in the packet headers */ |
| dev->net->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_FILTER; |
| |
| /* monitor VLAN additions and removals */ |
| dev->net->netdev_ops = &cdc_mbim_netdev_ops; |
| err: |
| return ret; |
| } |
| |
| static void cdc_mbim_unbind(struct usbnet *dev, struct usb_interface *intf) |
| { |
| struct cdc_mbim_state *info = (void *)&dev->data; |
| struct cdc_ncm_ctx *ctx = info->ctx; |
| |
| /* disconnect subdriver from control interface */ |
| if (info->subdriver && info->subdriver->disconnect) |
| info->subdriver->disconnect(ctx->control); |
| info->subdriver = NULL; |
| |
| /* let NCM unbind clean up both control and data interface */ |
| cdc_ncm_unbind(dev, intf); |
| } |
| |
| /* verify that the ethernet protocol is IPv4 or IPv6 */ |
| static bool is_ip_proto(__be16 proto) |
| { |
| switch (proto) { |
| case htons(ETH_P_IP): |
| case htons(ETH_P_IPV6): |
| return true; |
| } |
| return false; |
| } |
| |
| static struct sk_buff *cdc_mbim_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags) |
| { |
| struct sk_buff *skb_out; |
| struct cdc_mbim_state *info = (void *)&dev->data; |
| struct cdc_ncm_ctx *ctx = info->ctx; |
| __le32 sign = cpu_to_le32(USB_CDC_MBIM_NDP16_IPS_SIGN); |
| u16 tci = 0; |
| bool is_ip; |
| u8 *c; |
| |
| if (!ctx) |
| goto error; |
| |
| if (skb) { |
| if (skb->len <= ETH_HLEN) |
| goto error; |
| |
| /* Some applications using e.g. packet sockets will |
| * bypass the VLAN acceleration and create tagged |
| * ethernet frames directly. We primarily look for |
| * the accelerated out-of-band tag, but fall back if |
| * required |
| */ |
| skb_reset_mac_header(skb); |
| if (vlan_get_tag(skb, &tci) < 0 && skb->len > VLAN_ETH_HLEN && |
| __vlan_get_tag(skb, &tci) == 0) { |
| is_ip = is_ip_proto(vlan_eth_hdr(skb)->h_vlan_encapsulated_proto); |
| skb_pull(skb, VLAN_ETH_HLEN); |
| } else { |
| is_ip = is_ip_proto(eth_hdr(skb)->h_proto); |
| skb_pull(skb, ETH_HLEN); |
| } |
| |
| /* Is IP session <0> tagged too? */ |
| if (info->flags & FLAG_IPS0_VLAN) { |
| /* drop all untagged packets */ |
| if (!tci) |
| goto error; |
| /* map MBIM_IPS0_VID to IPS<0> */ |
| if (tci == MBIM_IPS0_VID) |
| tci = 0; |
| } |
| |
| /* mapping VLANs to MBIM sessions: |
| * no tag => IPS session <0> if !FLAG_IPS0_VLAN |
| * 1 - 255 => IPS session <vlanid> |
| * 256 - 511 => DSS session <vlanid - 256> |
| * 512 - 4093 => unsupported, drop |
| * 4094 => IPS session <0> if FLAG_IPS0_VLAN |
| */ |
| |
| switch (tci & 0x0f00) { |
| case 0x0000: /* VLAN ID 0 - 255 */ |
| if (!is_ip) |
| goto error; |
| c = (u8 *)&sign; |
| c[3] = tci; |
| break; |
| case 0x0100: /* VLAN ID 256 - 511 */ |
| if (is_ip) |
| goto error; |
| sign = cpu_to_le32(USB_CDC_MBIM_NDP16_DSS_SIGN); |
| c = (u8 *)&sign; |
| c[3] = tci; |
| break; |
| default: |
| netif_err(dev, tx_err, dev->net, |
| "unsupported tci=0x%04x\n", tci); |
| goto error; |
| } |
| } |
| |
| spin_lock_bh(&ctx->mtx); |
| skb_out = cdc_ncm_fill_tx_frame(dev, skb, sign); |
| spin_unlock_bh(&ctx->mtx); |
| return skb_out; |
| |
| error: |
| if (skb) |
| dev_kfree_skb_any(skb); |
| |
| return NULL; |
| } |
| |
| /* Some devices are known to send Neigbor Solicitation messages and |
| * require Neigbor Advertisement replies. The IPv6 core will not |
| * respond since IFF_NOARP is set, so we must handle them ourselves. |
| */ |
| static void do_neigh_solicit(struct usbnet *dev, u8 *buf, u16 tci) |
| { |
| struct ipv6hdr *iph = (void *)buf; |
| struct nd_msg *msg = (void *)(iph + 1); |
| struct net_device *netdev; |
| struct inet6_dev *in6_dev; |
| bool is_router; |
| |
| /* we'll only respond to requests from unicast addresses to |
| * our solicited node addresses. |
| */ |
| if (!ipv6_addr_is_solict_mult(&iph->daddr) || |
| !(ipv6_addr_type(&iph->saddr) & IPV6_ADDR_UNICAST)) |
| return; |
| |
| /* need to send the NA on the VLAN dev, if any */ |
| rcu_read_lock(); |
| if (tci) { |
| netdev = __vlan_find_dev_deep_rcu(dev->net, htons(ETH_P_8021Q), |
| tci); |
| if (!netdev) { |
| rcu_read_unlock(); |
| return; |
| } |
| } else { |
| netdev = dev->net; |
| } |
| dev_hold(netdev); |
| rcu_read_unlock(); |
| |
| in6_dev = in6_dev_get(netdev); |
| if (!in6_dev) |
| goto out; |
| is_router = !!in6_dev->cnf.forwarding; |
| in6_dev_put(in6_dev); |
| |
| /* ipv6_stub != NULL if in6_dev_get returned an inet6_dev */ |
| ipv6_stub->ndisc_send_na(netdev, &iph->saddr, &msg->target, |
| is_router /* router */, |
| true /* solicited */, |
| false /* override */, |
| true /* inc_opt */); |
| out: |
| dev_put(netdev); |
| } |
| |
| static bool is_neigh_solicit(u8 *buf, size_t len) |
| { |
| struct ipv6hdr *iph = (void *)buf; |
| struct nd_msg *msg = (void *)(iph + 1); |
| |
| return (len >= sizeof(struct ipv6hdr) + sizeof(struct nd_msg) && |
| iph->nexthdr == IPPROTO_ICMPV6 && |
| msg->icmph.icmp6_code == 0 && |
| msg->icmph.icmp6_type == NDISC_NEIGHBOUR_SOLICITATION); |
| } |
| |
| |
| static struct sk_buff *cdc_mbim_process_dgram(struct usbnet *dev, u8 *buf, size_t len, u16 tci) |
| { |
| __be16 proto = htons(ETH_P_802_3); |
| struct sk_buff *skb = NULL; |
| |
| if (tci < 256 || tci == MBIM_IPS0_VID) { /* IPS session? */ |
| if (len < sizeof(struct iphdr)) |
| goto err; |
| |
| switch (*buf & 0xf0) { |
| case 0x40: |
| proto = htons(ETH_P_IP); |
| break; |
| case 0x60: |
| if (is_neigh_solicit(buf, len)) |
| do_neigh_solicit(dev, buf, tci); |
| proto = htons(ETH_P_IPV6); |
| break; |
| default: |
| goto err; |
| } |
| } |
| |
| skb = netdev_alloc_skb_ip_align(dev->net, len + ETH_HLEN); |
| if (!skb) |
| goto err; |
| |
| /* add an ethernet header */ |
| skb_put(skb, ETH_HLEN); |
| skb_reset_mac_header(skb); |
| eth_hdr(skb)->h_proto = proto; |
| eth_zero_addr(eth_hdr(skb)->h_source); |
| memcpy(eth_hdr(skb)->h_dest, dev->net->dev_addr, ETH_ALEN); |
| |
| /* add datagram */ |
| skb_put_data(skb, buf, len); |
| |
| /* map MBIM session to VLAN */ |
| if (tci) |
| __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tci); |
| err: |
| return skb; |
| } |
| |
| static int cdc_mbim_rx_fixup(struct usbnet *dev, struct sk_buff *skb_in) |
| { |
| struct sk_buff *skb; |
| struct cdc_mbim_state *info = (void *)&dev->data; |
| struct cdc_ncm_ctx *ctx = info->ctx; |
| int len; |
| int nframes; |
| int x; |
| int offset; |
| struct usb_cdc_ncm_ndp16 *ndp16; |
| struct usb_cdc_ncm_dpe16 *dpe16; |
| int ndpoffset; |
| int loopcount = 50; /* arbitrary max preventing infinite loop */ |
| u32 payload = 0; |
| u8 *c; |
| u16 tci; |
| |
| ndpoffset = cdc_ncm_rx_verify_nth16(ctx, skb_in); |
| if (ndpoffset < 0) |
| goto error; |
| |
| next_ndp: |
| nframes = cdc_ncm_rx_verify_ndp16(skb_in, ndpoffset); |
| if (nframes < 0) |
| goto error; |
| |
| ndp16 = (struct usb_cdc_ncm_ndp16 *)(skb_in->data + ndpoffset); |
| |
| switch (ndp16->dwSignature & cpu_to_le32(0x00ffffff)) { |
| case cpu_to_le32(USB_CDC_MBIM_NDP16_IPS_SIGN): |
| c = (u8 *)&ndp16->dwSignature; |
| tci = c[3]; |
| /* tag IPS<0> packets too if MBIM_IPS0_VID exists */ |
| if (!tci && info->flags & FLAG_IPS0_VLAN) |
| tci = MBIM_IPS0_VID; |
| break; |
| case cpu_to_le32(USB_CDC_MBIM_NDP16_DSS_SIGN): |
| c = (u8 *)&ndp16->dwSignature; |
| tci = c[3] + 256; |
| break; |
| default: |
| netif_dbg(dev, rx_err, dev->net, |
| "unsupported NDP signature <0x%08x>\n", |
| le32_to_cpu(ndp16->dwSignature)); |
| goto err_ndp; |
| |
| } |
| |
| dpe16 = ndp16->dpe16; |
| for (x = 0; x < nframes; x++, dpe16++) { |
| offset = le16_to_cpu(dpe16->wDatagramIndex); |
| len = le16_to_cpu(dpe16->wDatagramLength); |
| |
| /* |
| * CDC NCM ch. 3.7 |
| * All entries after first NULL entry are to be ignored |
| */ |
| if ((offset == 0) || (len == 0)) { |
| if (!x) |
| goto err_ndp; /* empty NTB */ |
| break; |
| } |
| |
| /* sanity checking */ |
| if (((offset + len) > skb_in->len) || (len > ctx->rx_max)) { |
| netif_dbg(dev, rx_err, dev->net, |
| "invalid frame detected (ignored) offset[%u]=%u, length=%u, skb=%p\n", |
| x, offset, len, skb_in); |
| if (!x) |
| goto err_ndp; |
| break; |
| } else { |
| skb = cdc_mbim_process_dgram(dev, skb_in->data + offset, len, tci); |
| if (!skb) |
| goto error; |
| usbnet_skb_return(dev, skb); |
| payload += len; /* count payload bytes in this NTB */ |
| } |
| } |
| err_ndp: |
| /* are there more NDPs to process? */ |
| ndpoffset = le16_to_cpu(ndp16->wNextNdpIndex); |
| if (ndpoffset && loopcount--) |
| goto next_ndp; |
| |
| /* update stats */ |
| ctx->rx_overhead += skb_in->len - payload; |
| ctx->rx_ntbs++; |
| |
| return 1; |
| error: |
| return 0; |
| } |
| |
| static int cdc_mbim_suspend(struct usb_interface *intf, pm_message_t message) |
| { |
| int ret = -ENODEV; |
| struct usbnet *dev = usb_get_intfdata(intf); |
| struct cdc_mbim_state *info = (void *)&dev->data; |
| struct cdc_ncm_ctx *ctx = info->ctx; |
| |
| if (!ctx) |
| goto error; |
| |
| /* |
| * Both usbnet_suspend() and subdriver->suspend() MUST return 0 |
| * in system sleep context, otherwise, the resume callback has |
| * to recover device from previous suspend failure. |
| */ |
| ret = usbnet_suspend(intf, message); |
| if (ret < 0) |
| goto error; |
| |
| if (intf == ctx->control && info->subdriver && info->subdriver->suspend) |
| ret = info->subdriver->suspend(intf, message); |
| if (ret < 0) |
| usbnet_resume(intf); |
| |
| error: |
| return ret; |
| } |
| |
| static int cdc_mbim_resume(struct usb_interface *intf) |
| { |
| int ret = 0; |
| struct usbnet *dev = usb_get_intfdata(intf); |
| struct cdc_mbim_state *info = (void *)&dev->data; |
| struct cdc_ncm_ctx *ctx = info->ctx; |
| bool callsub = (intf == ctx->control && info->subdriver && info->subdriver->resume); |
| |
| if (callsub) |
| ret = info->subdriver->resume(intf); |
| if (ret < 0) |
| goto err; |
| ret = usbnet_resume(intf); |
| if (ret < 0 && callsub) |
| info->subdriver->suspend(intf, PMSG_SUSPEND); |
| err: |
| return ret; |
| } |
| |
| static const struct driver_info cdc_mbim_info = { |
| .description = "CDC MBIM", |
| .flags = FLAG_NO_SETINT | FLAG_MULTI_PACKET | FLAG_WWAN, |
| .bind = cdc_mbim_bind, |
| .unbind = cdc_mbim_unbind, |
| .manage_power = cdc_mbim_manage_power, |
| .rx_fixup = cdc_mbim_rx_fixup, |
| .tx_fixup = cdc_mbim_tx_fixup, |
| }; |
| |
| /* MBIM and NCM devices should not need a ZLP after NTBs with |
| * dwNtbOutMaxSize length. Nevertheless, a number of devices from |
| * different vendor IDs will fail unless we send ZLPs, forcing us |
| * to make this the default. |
| * |
| * This default may cause a performance penalty for spec conforming |
| * devices wanting to take advantage of optimizations possible without |
| * ZLPs. A whitelist is added in an attempt to avoid this for devices |
| * known to conform to the MBIM specification. |
| * |
| * All known devices supporting NCM compatibility mode are also |
| * conforming to the NCM and MBIM specifications. For this reason, the |
| * NCM subclass entry is also in the ZLP whitelist. |
| */ |
| static const struct driver_info cdc_mbim_info_zlp = { |
| .description = "CDC MBIM", |
| .flags = FLAG_NO_SETINT | FLAG_MULTI_PACKET | FLAG_WWAN | FLAG_SEND_ZLP, |
| .bind = cdc_mbim_bind, |
| .unbind = cdc_mbim_unbind, |
| .manage_power = cdc_mbim_manage_power, |
| .rx_fixup = cdc_mbim_rx_fixup, |
| .tx_fixup = cdc_mbim_tx_fixup, |
| }; |
| |
| /* The spefication explicitly allows NDPs to be placed anywhere in the |
| * frame, but some devices fail unless the NDP is placed after the IP |
| * packets. Using the CDC_NCM_FLAG_NDP_TO_END flags to force this |
| * behaviour. |
| * |
| * Note: The current implementation of this feature restricts each NTB |
| * to a single NDP, implying that multiplexed sessions cannot share an |
| * NTB. This might affect performace for multiplexed sessions. |
| */ |
| static const struct driver_info cdc_mbim_info_ndp_to_end = { |
| .description = "CDC MBIM", |
| .flags = FLAG_NO_SETINT | FLAG_MULTI_PACKET | FLAG_WWAN, |
| .bind = cdc_mbim_bind, |
| .unbind = cdc_mbim_unbind, |
| .manage_power = cdc_mbim_manage_power, |
| .rx_fixup = cdc_mbim_rx_fixup, |
| .tx_fixup = cdc_mbim_tx_fixup, |
| .data = CDC_NCM_FLAG_NDP_TO_END, |
| }; |
| |
| /* Some modems (e.g. Telit LE922A6) do not work properly with altsetting |
| * toggle done in cdc_ncm_bind_common. CDC_MBIM_FLAG_AVOID_ALTSETTING_TOGGLE |
| * flag is used to avoid this procedure. |
| */ |
| static const struct driver_info cdc_mbim_info_avoid_altsetting_toggle = { |
| .description = "CDC MBIM", |
| .flags = FLAG_NO_SETINT | FLAG_MULTI_PACKET | FLAG_WWAN | FLAG_SEND_ZLP, |
| .bind = cdc_mbim_bind, |
| .unbind = cdc_mbim_unbind, |
| .manage_power = cdc_mbim_manage_power, |
| .rx_fixup = cdc_mbim_rx_fixup, |
| .tx_fixup = cdc_mbim_tx_fixup, |
| .data = CDC_MBIM_FLAG_AVOID_ALTSETTING_TOGGLE, |
| }; |
| |
| static const struct usb_device_id mbim_devs[] = { |
| /* This duplicate NCM entry is intentional. MBIM devices can |
| * be disguised as NCM by default, and this is necessary to |
| * allow us to bind the correct driver_info to such devices. |
| * |
| * bind() will sort out this for us, selecting the correct |
| * entry and reject the other |
| */ |
| { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_NCM, USB_CDC_PROTO_NONE), |
| .driver_info = (unsigned long)&cdc_mbim_info, |
| }, |
| /* ZLP conformance whitelist: All Ericsson MBIM devices */ |
| { USB_VENDOR_AND_INTERFACE_INFO(0x0bdb, USB_CLASS_COMM, USB_CDC_SUBCLASS_MBIM, USB_CDC_PROTO_NONE), |
| .driver_info = (unsigned long)&cdc_mbim_info, |
| }, |
| |
| /* Some Huawei devices, ME906s-158 (12d1:15c1) and E3372 |
| * (12d1:157d), are known to fail unless the NDP is placed |
| * after the IP packets. Applying the quirk to all Huawei |
| * devices is broader than necessary, but harmless. |
| */ |
| { USB_VENDOR_AND_INTERFACE_INFO(0x12d1, USB_CLASS_COMM, USB_CDC_SUBCLASS_MBIM, USB_CDC_PROTO_NONE), |
| .driver_info = (unsigned long)&cdc_mbim_info_ndp_to_end, |
| }, |
| |
| /* The HP lt4132 (03f0:a31d) is a rebranded Huawei ME906s-158, |
| * therefore it too requires the above "NDP to end" quirk. |
| */ |
| { USB_DEVICE_AND_INTERFACE_INFO(0x03f0, 0xa31d, USB_CLASS_COMM, USB_CDC_SUBCLASS_MBIM, USB_CDC_PROTO_NONE), |
| .driver_info = (unsigned long)&cdc_mbim_info_ndp_to_end, |
| }, |
| |
| /* Telit LE922A6 in MBIM composition */ |
| { USB_DEVICE_AND_INTERFACE_INFO(0x1bc7, 0x1041, USB_CLASS_COMM, USB_CDC_SUBCLASS_MBIM, USB_CDC_PROTO_NONE), |
| .driver_info = (unsigned long)&cdc_mbim_info_avoid_altsetting_toggle, |
| }, |
| |
| /* Telit LN920 */ |
| { USB_DEVICE_AND_INTERFACE_INFO(0x1bc7, 0x1061, USB_CLASS_COMM, USB_CDC_SUBCLASS_MBIM, USB_CDC_PROTO_NONE), |
| .driver_info = (unsigned long)&cdc_mbim_info_avoid_altsetting_toggle, |
| }, |
| |
| /* Telit FN990 */ |
| { USB_DEVICE_AND_INTERFACE_INFO(0x1bc7, 0x1071, USB_CLASS_COMM, USB_CDC_SUBCLASS_MBIM, USB_CDC_PROTO_NONE), |
| .driver_info = (unsigned long)&cdc_mbim_info_avoid_altsetting_toggle, |
| }, |
| |
| /* default entry */ |
| { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_MBIM, USB_CDC_PROTO_NONE), |
| .driver_info = (unsigned long)&cdc_mbim_info_zlp, |
| }, |
| { |
| }, |
| }; |
| MODULE_DEVICE_TABLE(usb, mbim_devs); |
| |
| static struct usb_driver cdc_mbim_driver = { |
| .name = "cdc_mbim", |
| .id_table = mbim_devs, |
| .probe = usbnet_probe, |
| .disconnect = usbnet_disconnect, |
| .suspend = cdc_mbim_suspend, |
| .resume = cdc_mbim_resume, |
| .reset_resume = cdc_mbim_resume, |
| .supports_autosuspend = 1, |
| .disable_hub_initiated_lpm = 1, |
| }; |
| module_usb_driver(cdc_mbim_driver); |
| |
| MODULE_AUTHOR("Greg Suarez <gsuarez@smithmicro.com>"); |
| MODULE_AUTHOR("Bjørn Mork <bjorn@mork.no>"); |
| MODULE_DESCRIPTION("USB CDC MBIM host driver"); |
| MODULE_LICENSE("GPL"); |