linux/drivers/net/usb/cdc_ether.c

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/*
* CDC Ethernet based networking peripherals
* Copyright (C) 2003-2005 by David Brownell
* Copyright (C) 2006 by Ole Andre Vadla Ravnas (ActiveSync)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
// #define DEBUG // error path messages, extra info
// #define VERBOSE // more; success messages
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/workqueue.h>
#include <linux/mii.h>
#include <linux/usb.h>
#include <linux/usb/cdc.h>
#include <linux/usb/usbnet.h>
#if IS_ENABLED(CONFIG_USB_NET_RNDIS_HOST)
static int is_rndis(struct usb_interface_descriptor *desc)
{
return (desc->bInterfaceClass == USB_CLASS_COMM &&
desc->bInterfaceSubClass == 2 &&
desc->bInterfaceProtocol == 0xff);
}
static int is_activesync(struct usb_interface_descriptor *desc)
{
return (desc->bInterfaceClass == USB_CLASS_MISC &&
desc->bInterfaceSubClass == 1 &&
desc->bInterfaceProtocol == 1);
}
static int is_wireless_rndis(struct usb_interface_descriptor *desc)
{
return (desc->bInterfaceClass == USB_CLASS_WIRELESS_CONTROLLER &&
desc->bInterfaceSubClass == 1 &&
desc->bInterfaceProtocol == 3);
}
#else
#define is_rndis(desc) 0
#define is_activesync(desc) 0
#define is_wireless_rndis(desc) 0
#endif
static const u8 mbm_guid[16] = {
0xa3, 0x17, 0xa8, 0x8b, 0x04, 0x5e, 0x4f, 0x01,
0xa6, 0x07, 0xc0, 0xff, 0xcb, 0x7e, 0x39, 0x2a,
};
static void usbnet_cdc_update_filter(struct usbnet *dev)
{
struct cdc_state *info = (void *) &dev->data;
struct usb_interface *intf = info->control;
struct net_device *net = dev->net;
u16 cdc_filter = USB_CDC_PACKET_TYPE_DIRECTED
| USB_CDC_PACKET_TYPE_BROADCAST;
/* filtering on the device is an optional feature and not worth
* the hassle so we just roughly care about snooping and if any
* multicast is requested, we take every multicast
*/
if (net->flags & IFF_PROMISC)
cdc_filter |= USB_CDC_PACKET_TYPE_PROMISCUOUS;
if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI))
cdc_filter |= USB_CDC_PACKET_TYPE_ALL_MULTICAST;
usb_control_msg(dev->udev,
usb_sndctrlpipe(dev->udev, 0),
USB_CDC_SET_ETHERNET_PACKET_FILTER,
USB_TYPE_CLASS | USB_RECIP_INTERFACE,
cdc_filter,
intf->cur_altsetting->desc.bInterfaceNumber,
NULL,
0,
USB_CTRL_SET_TIMEOUT
);
}
/* probes control interface, claims data interface, collects the bulk
* endpoints, activates data interface (if needed), maybe sets MTU.
* all pure cdc, except for certain firmware workarounds, and knowing
* that rndis uses one different rule.
*/
int usbnet_generic_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
{
u8 *buf = intf->cur_altsetting->extra;
int len = intf->cur_altsetting->extralen;
struct usb_interface_descriptor *d;
struct cdc_state *info = (void *) &dev->data;
int status;
int rndis;
bool android_rndis_quirk = false;
struct usb_driver *driver = driver_of(intf);
struct usb_cdc_mdlm_desc *desc = NULL;
struct usb_cdc_mdlm_detail_desc *detail = NULL;
if (sizeof(dev->data) < sizeof(*info))
return -EDOM;
/* expect strict spec conformance for the descriptors, but
* cope with firmware which stores them in the wrong place
*/
if (len == 0 && dev->udev->actconfig->extralen) {
/* Motorola SB4100 (and others: Brad Hards says it's
* from a Broadcom design) put CDC descriptors here
*/
buf = dev->udev->actconfig->extra;
len = dev->udev->actconfig->extralen;
dev_dbg(&intf->dev, "CDC descriptors on config\n");
}
/* Maybe CDC descriptors are after the endpoint? This bug has
* been seen on some 2Wire Inc RNDIS-ish products.
*/
if (len == 0) {
struct usb_host_endpoint *hep;
hep = intf->cur_altsetting->endpoint;
if (hep) {
buf = hep->extra;
len = hep->extralen;
}
if (len)
dev_dbg(&intf->dev,
"CDC descriptors on endpoint\n");
}
/* this assumes that if there's a non-RNDIS vendor variant
* of cdc-acm, it'll fail RNDIS requests cleanly.
*/
rndis = (is_rndis(&intf->cur_altsetting->desc) ||
is_activesync(&intf->cur_altsetting->desc) ||
is_wireless_rndis(&intf->cur_altsetting->desc));
memset(info, 0, sizeof(*info));
info->control = intf;
while (len > 3) {
if (buf[1] != USB_DT_CS_INTERFACE)
goto next_desc;
/* use bDescriptorSubType to identify the CDC descriptors.
* We expect devices with CDC header and union descriptors.
* For CDC Ethernet we need the ethernet descriptor.
* For RNDIS, ignore two (pointless) CDC modem descriptors
* in favor of a complicated OID-based RPC scheme doing what
* CDC Ethernet achieves with a simple descriptor.
*/
switch (buf[2]) {
case USB_CDC_HEADER_TYPE:
if (info->header) {
dev_dbg(&intf->dev, "extra CDC header\n");
goto bad_desc;
}
info->header = (void *) buf;
if (info->header->bLength != sizeof(*info->header)) {
dev_dbg(&intf->dev, "CDC header len %u\n",
info->header->bLength);
goto bad_desc;
}
break;
case USB_CDC_ACM_TYPE:
/* paranoia: disambiguate a "real" vendor-specific
* modem interface from an RNDIS non-modem.
*/
if (rndis) {
struct usb_cdc_acm_descriptor *acm;
acm = (void *) buf;
if (acm->bmCapabilities) {
dev_dbg(&intf->dev,
"ACM capabilities %02x, "
"not really RNDIS?\n",
acm->bmCapabilities);
goto bad_desc;
}
}
break;
case USB_CDC_UNION_TYPE:
if (info->u) {
dev_dbg(&intf->dev, "extra CDC union\n");
goto bad_desc;
}
info->u = (void *) buf;
if (info->u->bLength != sizeof(*info->u)) {
dev_dbg(&intf->dev, "CDC union len %u\n",
info->u->bLength);
goto bad_desc;
}
/* we need a master/control interface (what we're
* probed with) and a slave/data interface; union
* descriptors sort this all out.
*/
info->control = usb_ifnum_to_if(dev->udev,
info->u->bMasterInterface0);
info->data = usb_ifnum_to_if(dev->udev,
info->u->bSlaveInterface0);
if (!info->control || !info->data) {
dev_dbg(&intf->dev,
"master #%u/%p slave #%u/%p\n",
info->u->bMasterInterface0,
info->control,
info->u->bSlaveInterface0,
info->data);
/* fall back to hard-wiring for RNDIS */
if (rndis) {
android_rndis_quirk = true;
goto next_desc;
}
goto bad_desc;
}
if (info->control != intf) {
dev_dbg(&intf->dev, "bogus CDC Union\n");
/* Ambit USB Cable Modem (and maybe others)
* interchanges master and slave interface.
*/
if (info->data == intf) {
info->data = info->control;
info->control = intf;
} else
goto bad_desc;
}
/* some devices merge these - skip class check */
if (info->control == info->data)
goto next_desc;
/* a data interface altsetting does the real i/o */
d = &info->data->cur_altsetting->desc;
if (d->bInterfaceClass != USB_CLASS_CDC_DATA) {
dev_dbg(&intf->dev, "slave class %u\n",
d->bInterfaceClass);
goto bad_desc;
}
break;
case USB_CDC_ETHERNET_TYPE:
if (info->ether) {
dev_dbg(&intf->dev, "extra CDC ether\n");
goto bad_desc;
}
info->ether = (void *) buf;
if (info->ether->bLength != sizeof(*info->ether)) {
dev_dbg(&intf->dev, "CDC ether len %u\n",
info->ether->bLength);
goto bad_desc;
}
dev->hard_mtu = le16_to_cpu(
info->ether->wMaxSegmentSize);
/* because of Zaurus, we may be ignoring the host
* side link address we were given.
*/
break;
case USB_CDC_MDLM_TYPE:
if (desc) {
dev_dbg(&intf->dev, "extra MDLM descriptor\n");
goto bad_desc;
}
desc = (void *)buf;
if (desc->bLength != sizeof(*desc))
goto bad_desc;
if (memcmp(&desc->bGUID, mbm_guid, 16))
goto bad_desc;
break;
case USB_CDC_MDLM_DETAIL_TYPE:
if (detail) {
dev_dbg(&intf->dev, "extra MDLM detail descriptor\n");
goto bad_desc;
}
detail = (void *)buf;
if (detail->bGuidDescriptorType == 0) {
if (detail->bLength < (sizeof(*detail) + 1))
goto bad_desc;
} else
goto bad_desc;
break;
}
next_desc:
len -= buf[0]; /* bLength */
buf += buf[0];
}
/* Microsoft ActiveSync based and some regular RNDIS devices lack the
* CDC descriptors, so we'll hard-wire the interfaces and not check
* for descriptors.
*
* Some Android RNDIS devices have a CDC Union descriptor pointing
* to non-existing interfaces. Ignore that and attempt the same
* hard-wired 0 and 1 interfaces.
*/
if (rndis && (!info->u || android_rndis_quirk)) {
info->control = usb_ifnum_to_if(dev->udev, 0);
info->data = usb_ifnum_to_if(dev->udev, 1);
if (!info->control || !info->data || info->control != intf) {
dev_dbg(&intf->dev,
"rndis: master #0/%p slave #1/%p\n",
info->control,
info->data);
goto bad_desc;
}
} else if (!info->header || !info->u || (!rndis && !info->ether)) {
dev_dbg(&intf->dev, "missing cdc %s%s%sdescriptor\n",
info->header ? "" : "header ",
info->u ? "" : "union ",
info->ether ? "" : "ether ");
goto bad_desc;
}
/* claim data interface and set it up ... with side effects.
* network traffic can't flow until an altsetting is enabled.
*/
if (info->data != info->control) {
status = usb_driver_claim_interface(driver, info->data, dev);
if (status < 0)
return status;
}
status = usbnet_get_endpoints(dev, info->data);
if (status < 0) {
/* ensure immediate exit from usbnet_disconnect */
usb_set_intfdata(info->data, NULL);
if (info->data != info->control)
usb_driver_release_interface(driver, info->data);
return status;
}
/* status endpoint: optional for CDC Ethernet, not RNDIS (or ACM) */
if (info->data != info->control)
dev->status = NULL;
if (info->control->cur_altsetting->desc.bNumEndpoints == 1) {
struct usb_endpoint_descriptor *desc;
dev->status = &info->control->cur_altsetting->endpoint [0];
desc = &dev->status->desc;
if (!usb_endpoint_is_int_in(desc) ||
(le16_to_cpu(desc->wMaxPacketSize)
< sizeof(struct usb_cdc_notification)) ||
!desc->bInterval) {
dev_dbg(&intf->dev, "bad notification endpoint\n");
dev->status = NULL;
}
}
if (rndis && !dev->status) {
dev_dbg(&intf->dev, "missing RNDIS status endpoint\n");
usb_set_intfdata(info->data, NULL);
usb_driver_release_interface(driver, info->data);
return -ENODEV;
}
/* Some devices don't initialise properly. In particular
* the packet filter is not reset. There are devices that
* don't do reset all the way. So the packet filter should
* be set to a sane initial value.
*/
usbnet_cdc_update_filter(dev);
return 0;
bad_desc:
dev_info(&dev->udev->dev, "bad CDC descriptors\n");
return -ENODEV;
}
EXPORT_SYMBOL_GPL(usbnet_generic_cdc_bind);
void usbnet_cdc_unbind(struct usbnet *dev, struct usb_interface *intf)
{
struct cdc_state *info = (void *) &dev->data;
struct usb_driver *driver = driver_of(intf);
/* combined interface - nothing to do */
if (info->data == info->control)
return;
/* disconnect master --> disconnect slave */
if (intf == info->control && info->data) {
/* ensure immediate exit from usbnet_disconnect */
usb_set_intfdata(info->data, NULL);
usb_driver_release_interface(driver, info->data);
info->data = NULL;
}
/* and vice versa (just in case) */
else if (intf == info->data && info->control) {
/* ensure immediate exit from usbnet_disconnect */
usb_set_intfdata(info->control, NULL);
usb_driver_release_interface(driver, info->control);
info->control = NULL;
}
}
EXPORT_SYMBOL_GPL(usbnet_cdc_unbind);
/* Communications Device Class, Ethernet Control model
*
* Takes two interfaces. The DATA interface is inactive till an altsetting
* is selected. Configuration data includes class descriptors. There's
* an optional status endpoint on the control interface.
*
* This should interop with whatever the 2.4 "CDCEther.c" driver
* (by Brad Hards) talked with, with more functionality.
*/
static void dumpspeed(struct usbnet *dev, __le32 *speeds)
{
netif_info(dev, timer, dev->net,
"link speeds: %u kbps up, %u kbps down\n",
__le32_to_cpu(speeds[0]) / 1000,
__le32_to_cpu(speeds[1]) / 1000);
}
void usbnet_cdc_status(struct usbnet *dev, struct urb *urb)
{
struct usb_cdc_notification *event;
if (urb->actual_length < sizeof(*event))
return;
/* SPEED_CHANGE can get split into two 8-byte packets */
if (test_and_clear_bit(EVENT_STS_SPLIT, &dev->flags)) {
dumpspeed(dev, (__le32 *) urb->transfer_buffer);
return;
}
event = urb->transfer_buffer;
switch (event->bNotificationType) {
case USB_CDC_NOTIFY_NETWORK_CONNECTION:
netif_dbg(dev, timer, dev->net, "CDC: carrier %s\n",
event->wValue ? "on" : "off");
usbnet_link_change(dev, !!event->wValue, 0);
break;
case USB_CDC_NOTIFY_SPEED_CHANGE: /* tx/rx rates */
netif_dbg(dev, timer, dev->net, "CDC: speed change (len %d)\n",
urb->actual_length);
if (urb->actual_length != (sizeof(*event) + 8))
set_bit(EVENT_STS_SPLIT, &dev->flags);
else
dumpspeed(dev, (__le32 *) &event[1]);
break;
/* USB_CDC_NOTIFY_RESPONSE_AVAILABLE can happen too (e.g. RNDIS),
* but there are no standard formats for the response data.
*/
default:
netdev_err(dev->net, "CDC: unexpected notification %02x!\n",
event->bNotificationType);
break;
}
}
EXPORT_SYMBOL_GPL(usbnet_cdc_status);
int usbnet_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
{
int status;
struct cdc_state *info = (void *) &dev->data;
BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data)
< sizeof(struct cdc_state)));
status = usbnet_generic_cdc_bind(dev, intf);
if (status < 0)
return status;
status = usbnet_get_ethernet_addr(dev, info->ether->iMACAddress);
if (status < 0) {
usb_set_intfdata(info->data, NULL);
usb_driver_release_interface(driver_of(intf), info->data);
return status;
}
return 0;
}
EXPORT_SYMBOL_GPL(usbnet_cdc_bind);
static const struct driver_info cdc_info = {
.description = "CDC Ethernet Device",
2011-04-02 03:12:02 +00:00
.flags = FLAG_ETHER | FLAG_POINTTOPOINT,
.bind = usbnet_cdc_bind,
.unbind = usbnet_cdc_unbind,
.status = usbnet_cdc_status,
.set_rx_mode = usbnet_cdc_update_filter,
.manage_power = usbnet_manage_power,
};
static const struct driver_info wwan_info = {
.description = "Mobile Broadband Network Device",
.flags = FLAG_WWAN,
.bind = usbnet_cdc_bind,
.unbind = usbnet_cdc_unbind,
.status = usbnet_cdc_status,
.set_rx_mode = usbnet_cdc_update_filter,
.manage_power = usbnet_manage_power,
};
/*-------------------------------------------------------------------------*/
#define HUAWEI_VENDOR_ID 0x12D1
#define NOVATEL_VENDOR_ID 0x1410
#define ZTE_VENDOR_ID 0x19D2
#define DELL_VENDOR_ID 0x413C
#define REALTEK_VENDOR_ID 0x0bda
#define SAMSUNG_VENDOR_ID 0x04e8
static const struct usb_device_id products[] = {
/* BLACKLIST !!
*
* First blacklist any products that are egregiously nonconformant
* with the CDC Ethernet specs. Minor braindamage we cope with; when
* they're not even trying, needing a separate driver is only the first
* of the differences to show up.
*/
#define ZAURUS_MASTER_INTERFACE \
.bInterfaceClass = USB_CLASS_COMM, \
.bInterfaceSubClass = USB_CDC_SUBCLASS_ETHERNET, \
.bInterfaceProtocol = USB_CDC_PROTO_NONE
/* SA-1100 based Sharp Zaurus ("collie"), or compatible;
* wire-incompatible with true CDC Ethernet implementations.
* (And, it seems, needlessly so...)
*/
{
.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
| USB_DEVICE_ID_MATCH_DEVICE,
.idVendor = 0x04DD,
.idProduct = 0x8004,
ZAURUS_MASTER_INTERFACE,
.driver_info = 0,
},
/* PXA-25x based Sharp Zaurii. Note that it seems some of these
* (later models especially) may have shipped only with firmware
* advertising false "CDC MDLM" compatibility ... but we're not
* clear which models did that, so for now let's assume the worst.
*/
{
.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
| USB_DEVICE_ID_MATCH_DEVICE,
.idVendor = 0x04DD,
.idProduct = 0x8005, /* A-300 */
ZAURUS_MASTER_INTERFACE,
.driver_info = 0,
}, {
.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
| USB_DEVICE_ID_MATCH_DEVICE,
.idVendor = 0x04DD,
.idProduct = 0x8006, /* B-500/SL-5600 */
ZAURUS_MASTER_INTERFACE,
.driver_info = 0,
}, {
.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
| USB_DEVICE_ID_MATCH_DEVICE,
.idVendor = 0x04DD,
.idProduct = 0x8007, /* C-700 */
ZAURUS_MASTER_INTERFACE,
.driver_info = 0,
}, {
.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
| USB_DEVICE_ID_MATCH_DEVICE,
.idVendor = 0x04DD,
.idProduct = 0x9031, /* C-750 C-760 */
ZAURUS_MASTER_INTERFACE,
.driver_info = 0,
}, {
.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
| USB_DEVICE_ID_MATCH_DEVICE,
.idVendor = 0x04DD,
.idProduct = 0x9032, /* SL-6000 */
ZAURUS_MASTER_INTERFACE,
.driver_info = 0,
}, {
.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
| USB_DEVICE_ID_MATCH_DEVICE,
.idVendor = 0x04DD,
/* reported with some C860 units */
.idProduct = 0x9050, /* C-860 */
ZAURUS_MASTER_INTERFACE,
.driver_info = 0,
},
/* Olympus has some models with a Zaurus-compatible option.
* R-1000 uses a FreeScale i.MXL cpu (ARMv4T)
*/
{
.match_flags = USB_DEVICE_ID_MATCH_INT_INFO
| USB_DEVICE_ID_MATCH_DEVICE,
.idVendor = 0x07B4,
.idProduct = 0x0F02, /* R-1000 */
ZAURUS_MASTER_INTERFACE,
.driver_info = 0,
},
/* LG Electronics VL600 wants additional headers on every frame */
{
USB_DEVICE_AND_INTERFACE_INFO(0x1004, 0x61aa, USB_CLASS_COMM,
USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
.driver_info = 0,
},
/* Logitech Harmony 900 - uses the pseudo-MDLM (BLAN) driver */
{
USB_DEVICE_AND_INTERFACE_INFO(0x046d, 0xc11f, USB_CLASS_COMM,
USB_CDC_SUBCLASS_MDLM, USB_CDC_PROTO_NONE),
.driver_info = 0,
},
/* Novatel USB551L and MC551 - handled by qmi_wwan */
{
USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0xB001, USB_CLASS_COMM,
USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
.driver_info = 0,
},
/* Novatel E362 - handled by qmi_wwan */
{
USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9010, USB_CLASS_COMM,
USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
.driver_info = 0,
},
/* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
{
USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8195, USB_CLASS_COMM,
USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
.driver_info = 0,
},
/* Dell Wireless 5800 (Novatel E362) - handled by qmi_wwan */
{
USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x8196, USB_CLASS_COMM,
USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
.driver_info = 0,
},
/* Dell Wireless 5804 (Novatel E371) - handled by qmi_wwan */
{
USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, 0x819b, USB_CLASS_COMM,
USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
.driver_info = 0,
},
/* Novatel Expedite E371 - handled by qmi_wwan */
{
USB_DEVICE_AND_INTERFACE_INFO(NOVATEL_VENDOR_ID, 0x9011, USB_CLASS_COMM,
USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
.driver_info = 0,
},
/* AnyDATA ADU960S - handled by qmi_wwan */
{
USB_DEVICE_AND_INTERFACE_INFO(0x16d5, 0x650a, USB_CLASS_COMM,
USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
.driver_info = 0,
},
qmi_wwan/cdc_ether: let qmi_wwan handle the Huawei E1820 Another QMI speaking Qualcomm based device, which should be driven by qmi_wwan, while cdc_ether should ignore it. Like on other Huawei devices, the wwan function can appear either as a single vendor specific interface or as a CDC ECM class function using separate control and data interfaces. The ECM control interface protocol is 0xff, likely in an attempt to indicate that vendor specific management is required. In addition to the near standard CDC class, Huawei also add vendor specific AT management commands to their firmwares. This is probably an attempt to support non-Windows systems using standard class drivers. Unfortunately, this part of the firmware is often buggy. Linux is much better off using whatever native vendor specific management protocol the device offers, and Windows uses, whenever possible. This means QMI in the case of Qualcomm based devices. The E1820 has been verified to work fine with QMI. Matching on interface number is necessary to distiguish the wwan function from serial functions in the single interface mode, as both function types will have class/subclass/function set to ff/ff/ff. The control interface number does not change in CDC ECM mode, so the interface number matching rule is sufficient to handle both modes. The cdc_ether blacklist entry is only relevant in CDC ECM mode, but using a similar interface number based rule helps document this as a transfer from one driver to another. Other Huawei 02/06/ff devices are left with the cdc_ether driver because we do not know whether they are based on Qualcomm chips. The Huawei specific AT command management is known to be somewhat hardware independent, and their usage of these class codes may also be independent of the modem hardware. Reported-by: Graham Inggs <graham.inggs@uct.ac.za> Signed-off-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-06-06 10:57:02 +00:00
/* Huawei E1820 - handled by qmi_wwan */
{
USB_DEVICE_INTERFACE_NUMBER(HUAWEI_VENDOR_ID, 0x14ac, 1),
.driver_info = 0,
},
/* Realtek RTL8152 Based USB 2.0 Ethernet Adapters */
{
USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8152, USB_CLASS_COMM,
USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
.driver_info = 0,
},
/* Realtek RTL8153 Based USB 3.0 Ethernet Adapters */
{
USB_DEVICE_AND_INTERFACE_INFO(REALTEK_VENDOR_ID, 0x8153, USB_CLASS_COMM,
USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
.driver_info = 0,
},
/* Samsung USB Ethernet Adapters */
{
USB_DEVICE_AND_INTERFACE_INFO(SAMSUNG_VENDOR_ID, 0xa101, USB_CLASS_COMM,
USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
.driver_info = 0,
},
/* WHITELIST!!!
*
* CDC Ether uses two interfaces, not necessarily consecutive.
* We match the main interface, ignoring the optional device
* class so we could handle devices that aren't exclusively
* CDC ether.
*
* NOTE: this match must come AFTER entries blacklisting devices
* because of bugs/quirks in a given product (like Zaurus, above).
*/
{
/* ZTE (Vodafone) K3805-Z */
USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1003, USB_CLASS_COMM,
USB_CDC_SUBCLASS_ETHERNET,
USB_CDC_PROTO_NONE),
.driver_info = (unsigned long)&wwan_info,
}, {
/* ZTE (Vodafone) K3806-Z */
USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1015, USB_CLASS_COMM,
USB_CDC_SUBCLASS_ETHERNET,
USB_CDC_PROTO_NONE),
.driver_info = (unsigned long)&wwan_info,
}, {
/* ZTE (Vodafone) K4510-Z */
USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1173, USB_CLASS_COMM,
USB_CDC_SUBCLASS_ETHERNET,
USB_CDC_PROTO_NONE),
.driver_info = (unsigned long)&wwan_info,
}, {
/* ZTE (Vodafone) K3770-Z */
USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1177, USB_CLASS_COMM,
USB_CDC_SUBCLASS_ETHERNET,
USB_CDC_PROTO_NONE),
.driver_info = (unsigned long)&wwan_info,
}, {
/* ZTE (Vodafone) K3772-Z */
USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1181, USB_CLASS_COMM,
USB_CDC_SUBCLASS_ETHERNET,
USB_CDC_PROTO_NONE),
.driver_info = (unsigned long)&wwan_info,
}, {
/* Telit modules */
USB_VENDOR_AND_INTERFACE_INFO(0x1bc7, USB_CLASS_COMM,
USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
.driver_info = (kernel_ulong_t) &wwan_info,
}, {
USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET,
USB_CDC_PROTO_NONE),
.driver_info = (unsigned long) &cdc_info,
}, {
USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_MDLM,
USB_CDC_PROTO_NONE),
.driver_info = (unsigned long)&wwan_info,
}, {
/* Various Huawei modems with a network port like the UMG1831 */
USB_VENDOR_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, USB_CLASS_COMM,
USB_CDC_SUBCLASS_ETHERNET, 255),
.driver_info = (unsigned long)&wwan_info,
},
{ }, /* END */
};
MODULE_DEVICE_TABLE(usb, products);
static struct usb_driver cdc_driver = {
.name = "cdc_ether",
.id_table = products,
.probe = usbnet_probe,
.disconnect = usbnet_disconnect,
.suspend = usbnet_suspend,
.resume = usbnet_resume,
.reset_resume = usbnet_resume,
.supports_autosuspend = 1,
USB: Disable hub-initiated LPM for comms devices. Hub-initiated LPM is not good for USB communications devices. Comms devices should be able to tell when their link can go into a lower power state, because they know when an incoming transmission is finished. Ideally, these devices would slam their links into a lower power state, using the device-initiated LPM, after finishing the last packet of their data transfer. If we enable the idle timeouts for the parent hubs to enable hub-initiated LPM, we will get a lot of useless LPM packets on the bus as the devices reject LPM transitions when they're in the middle of receiving data. Worse, some devices might blindly accept the hub-initiated LPM and power down their radios while they're in the middle of receiving a transmission. The Intel Windows folks are disabling hub-initiated LPM for all USB communications devices under a xHCI USB 3.0 host. In order to keep the Linux behavior as close as possible to Windows, we need to do the same in Linux. Set the disable_hub_initiated_lpm flag for for all USB communications drivers. I know there aren't currently any USB 3.0 devices that implement these class specifications, but we should be ready if they do. Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Cc: Marcel Holtmann <marcel@holtmann.org> Cc: Gustavo Padovan <gustavo@padovan.org> Cc: Johan Hedberg <johan.hedberg@gmail.com> Cc: Hansjoerg Lipp <hjlipp@web.de> Cc: Tilman Schmidt <tilman@imap.cc> Cc: Karsten Keil <isdn@linux-pingi.de> Cc: Peter Korsgaard <jacmet@sunsite.dk> Cc: Jan Dumon <j.dumon@option.com> Cc: Petko Manolov <petkan@users.sourceforge.net> Cc: Steve Glendinning <steve.glendinning@smsc.com> Cc: "John W. Linville" <linville@tuxdriver.com> Cc: Kalle Valo <kvalo@qca.qualcomm.com> Cc: "Luis R. Rodriguez" <mcgrof@qca.qualcomm.com> Cc: Jouni Malinen <jouni@qca.qualcomm.com> Cc: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com> Cc: Senthil Balasubramanian <senthilb@qca.qualcomm.com> Cc: Christian Lamparter <chunkeey@googlemail.com> Cc: Brett Rudley <brudley@broadcom.com> Cc: Roland Vossen <rvossen@broadcom.com> Cc: Arend van Spriel <arend@broadcom.com> Cc: "Franky (Zhenhui) Lin" <frankyl@broadcom.com> Cc: Kan Yan <kanyan@broadcom.com> Cc: Dan Williams <dcbw@redhat.com> Cc: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Cc: Ivo van Doorn <IvDoorn@gmail.com> Cc: Gertjan van Wingerde <gwingerde@gmail.com> Cc: Helmut Schaa <helmut.schaa@googlemail.com> Cc: Herton Ronaldo Krzesinski <herton@canonical.com> Cc: Hin-Tak Leung <htl10@users.sourceforge.net> Cc: Larry Finger <Larry.Finger@lwfinger.net> Cc: Chaoming Li <chaoming_li@realsil.com.cn> Cc: Daniel Drake <dsd@gentoo.org> Cc: Ulrich Kunitz <kune@deine-taler.de> Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
2012-04-23 17:08:51 +00:00
.disable_hub_initiated_lpm = 1,
};
module_usb_driver(cdc_driver);
MODULE_AUTHOR("David Brownell");
MODULE_DESCRIPTION("USB CDC Ethernet devices");
MODULE_LICENSE("GPL");