diff options
| -rw-r--r-- | drivers/usb/net/Kconfig | 56 | ||||
| -rw-r--r-- | drivers/usb/net/Makefile | 1 | ||||
| -rw-r--r-- | drivers/usb/net/cdc_ether.c | 509 | ||||
| -rw-r--r-- | drivers/usb/net/usbnet.c | 392 |
4 files changed, 537 insertions, 421 deletions
diff --git a/drivers/usb/net/Kconfig b/drivers/usb/net/Kconfig index 20de10916a4e..4921101d93d0 100644 --- a/drivers/usb/net/Kconfig +++ b/drivers/usb/net/Kconfig @@ -137,35 +137,6 @@ config USB_PL2301 Choose this option if you're using a host-to-host cable with one of these chips. -comment "Intelligent USB Devices/Gadgets" - depends on USB_USBNET - -config USB_CDCETHER - boolean "CDC Ethernet support (smart devices such as cable modems)" - depends on USB_USBNET - default y - help - This option supports devices conforming to the Communication Device - Class (CDC) Ethernet Control Model, a specification that's easy to - implement in device firmware. The CDC specifications are available - from <http://www.usb.org/>. - - CDC Ethernet is an implementation option for DOCSIS cable modems - that support USB connectivity, used for non-Microsoft USB hosts. - The Linux-USB CDC Ethernet Gadget driver is an open implementation. - This driver should work with at least the following devices: - - * Ericsson PipeRider (all variants) - * Motorola (DM100 and SB4100) - * Broadcom Cable Modem (reference design) - * Toshiba PCX1100U - * ... - - This driver creates an interface named "ethX", where X depends on - what other networking devices you have in use. However, if the - IEEE 802 "local assignment" bit is set in the address, a "usbX" - name is used instead. - comment "Drivers built using the usbnet core" config USB_NET_AX8817X @@ -197,6 +168,32 @@ config USB_NET_AX8817X what other networking devices you have in use. +config USB_NET_CDCETHER + tristate "CDC Ethernet support (smart devices such as cable modems)" + depends on USB_USBNET + default y + help + This option supports devices conforming to the Communication Device + Class (CDC) Ethernet Control Model, a specification that's easy to + implement in device firmware. The CDC specifications are available + from <http://www.usb.org/>. + + CDC Ethernet is an implementation option for DOCSIS cable modems + that support USB connectivity, used for non-Microsoft USB hosts. + The Linux-USB CDC Ethernet Gadget driver is an open implementation. + This driver should work with at least the following devices: + + * Ericsson PipeRider (all variants) + * Motorola (DM100 and SB4100) + * Broadcom Cable Modem (reference design) + * Toshiba PCX1100U + * ... + + This driver creates an interface named "ethX", where X depends on + what other networking devices you have in use. However, if the + IEEE 802 "local assignment" bit is set in the address, a "usbX" + name is used instead. + config USB_NET_GL620A tristate "GeneSys GL620USB-A based cables" depends on USB_USBNET @@ -280,6 +277,7 @@ config USB_EPSON2888 config USB_NET_ZAURUS tristate "Sharp Zaurus (stock ROMs) and compatible" depends on USB_USBNET + select USB_NET_CDCETHER select CRC32 default y help diff --git a/drivers/usb/net/Makefile b/drivers/usb/net/Makefile index e13d7af3114b..697eb1913208 100644 --- a/drivers/usb/net/Makefile +++ b/drivers/usb/net/Makefile @@ -7,6 +7,7 @@ obj-$(CONFIG_USB_KAWETH) += kaweth.o obj-$(CONFIG_USB_PEGASUS) += pegasus.o obj-$(CONFIG_USB_RTL8150) += rtl8150.o obj-$(CONFIG_USB_NET_AX8817X) += asix.o +obj-$(CONFIG_USB_NET_CDCETHER) += cdc_ether.o obj-$(CONFIG_USB_NET_GL620A) += gl620a.o obj-$(CONFIG_USB_NET_NET1080) += net1080.o obj-$(CONFIG_USB_NET_CDC_SUBSET) += cdc_subset.o diff --git a/drivers/usb/net/cdc_ether.c b/drivers/usb/net/cdc_ether.c new file mode 100644 index 000000000000..652b04bbf6af --- /dev/null +++ b/drivers/usb/net/cdc_ether.c @@ -0,0 +1,509 @@ +/* + * CDC Ethernet based networking peripherals + * Copyright (C) 2003-2005 by David Brownell + * + * 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, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +// #define DEBUG // error path messages, extra info +// #define VERBOSE // more; success messages + +#include <linux/config.h> +#ifdef CONFIG_USB_DEBUG +# define DEBUG +#endif +#include <linux/module.h> +#include <linux/sched.h> +#include <linux/init.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/ctype.h> +#include <linux/ethtool.h> +#include <linux/workqueue.h> +#include <linux/mii.h> +#include <linux/usb.h> +#include <linux/usb_cdc.h> + +#include "usbnet.h" + + +/* + * 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; + struct usb_driver *driver = driver_of(intf); + + 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; + if (len) + dev_dbg(&intf->dev, + "CDC descriptors on config\n"); + } + + /* this assumes that if there's a non-RNDIS vendor variant + * of cdc-acm, it'll fail RNDIS requests cleanly. + */ + rndis = (intf->cur_altsetting->desc.bInterfaceProtocol == 0xff); + + 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_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); + 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; + } + + /* 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; + } +next_desc: + len -= buf [0]; /* bLength */ + buf += buf [0]; + } + + 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. + */ + 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); + usb_driver_release_interface(driver, info->data); + return status; + } + + /* status endpoint: optional for CDC Ethernet, not RNDIS (or ACM) */ + 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 (desc->bmAttributes != USB_ENDPOINT_XFER_INT + || !(desc->bEndpointAddress & USB_DIR_IN) + || (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; + } + 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); + + /* 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) +{ + if (netif_msg_timer(dev)) + devinfo(dev, "link speeds: %u kbps up, %u kbps down", + __le32_to_cpu(speeds[0]) / 1000, + __le32_to_cpu(speeds[1]) / 1000); +} + +static void 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: + if (netif_msg_timer(dev)) + devdbg(dev, "CDC: carrier %s", + event->wValue ? "on" : "off"); + if (event->wValue) + netif_carrier_on(dev->net); + else + netif_carrier_off(dev->net); + break; + case USB_CDC_NOTIFY_SPEED_CHANGE: /* tx/rx rates */ + if (netif_msg_timer(dev)) + devdbg(dev, "CDC: speed change (len %d)", + 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: + deverr(dev, "CDC: unexpected notification %02x!", + event->bNotificationType); + break; + } +} + +static u8 nibble(unsigned char c) +{ + if (likely(isdigit(c))) + return c - '0'; + c = toupper(c); + if (likely(isxdigit(c))) + return 10 + c - 'A'; + return 0; +} + +static inline int +get_ethernet_addr(struct usbnet *dev, struct usb_cdc_ether_desc *e) +{ + int tmp, i; + unsigned char buf [13]; + + tmp = usb_string(dev->udev, e->iMACAddress, buf, sizeof buf); + if (tmp != 12) { + dev_dbg(&dev->udev->dev, + "bad MAC string %d fetch, %d\n", e->iMACAddress, tmp); + if (tmp >= 0) + tmp = -EINVAL; + return tmp; + } + for (i = tmp = 0; i < 6; i++, tmp += 2) + dev->net->dev_addr [i] = + (nibble(buf [tmp]) << 4) + nibble(buf [tmp + 1]); + return 0; +} + +static int cdc_bind(struct usbnet *dev, struct usb_interface *intf) +{ + int status; + struct cdc_state *info = (void *) &dev->data; + + status = usbnet_generic_cdc_bind(dev, intf); + if (status < 0) + return status; + + status = get_ethernet_addr(dev, info->ether); + if (status < 0) { + usb_set_intfdata(info->data, NULL); + usb_driver_release_interface(driver_of(intf), info->data); + return status; + } + + /* FIXME cdc-ether has some multicast code too, though it complains + * in routine cases. info->ether describes the multicast support. + * Implement that here, manipulating the cdc filter as needed. + */ + return 0; +} + +static const struct driver_info cdc_info = { + .description = "CDC Ethernet Device", + .flags = FLAG_ETHER, + // .check_connect = cdc_check_connect, + .bind = cdc_bind, + .unbind = usbnet_cdc_unbind, + .status = cdc_status, +}; + +/*-------------------------------------------------------------------------*/ + + +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, +}, + +/* + * 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). + */ +{ + USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET, + USB_CDC_PROTO_NONE), + .driver_info = (unsigned long) &cdc_info, +}, + { }, // END +}; +MODULE_DEVICE_TABLE(usb, products); + +static struct usb_driver cdc_driver = { + .owner = THIS_MODULE, + .name = "cdc_ether", + .id_table = products, + .probe = usbnet_probe, + .disconnect = usbnet_disconnect, + .suspend = usbnet_suspend, + .resume = usbnet_resume, +}; + + +static int __init cdc_init(void) +{ + BUG_ON((sizeof(((struct usbnet *)0)->data) + < sizeof(struct cdc_state))); + + return usb_register(&cdc_driver); +} +module_init(cdc_init); + +static void __exit cdc_exit(void) +{ + usb_deregister(&cdc_driver); +} +module_exit(cdc_exit); + +MODULE_AUTHOR("David Brownell"); +MODULE_DESCRIPTION("USB CDC Ethernet devices"); +MODULE_LICENSE("GPL"); diff --git a/drivers/usb/net/usbnet.c b/drivers/usb/net/usbnet.c index 75a05ab0a642..7703725327d2 100644 --- a/drivers/usb/net/usbnet.c +++ b/drivers/usb/net/usbnet.c @@ -301,377 +301,6 @@ void usbnet_skb_return (struct usbnet *dev, struct sk_buff *skb) EXPORT_SYMBOL_GPL(usbnet_skb_return); -/*------------------------------------------------------------------------- - * - * Communications Device Class declarations. - * Used by CDC Ethernet, and some CDC variants - * - *-------------------------------------------------------------------------*/ - -#ifdef CONFIG_USB_CDCETHER -#define NEED_GENERIC_CDC -#endif - -#if defined(CONFIG_USB_ZAURUS) || defined(CONFIG_USB_ZAURUS_MODULE) -/* Ethernet variant uses funky framing, broken ethernet addressing */ -#define NEED_GENERIC_CDC -#endif - -#ifdef CONFIG_USB_RNDIS -/* ACM variant uses even funkier framing, complex control RPC scheme */ -#define NEED_GENERIC_CDC -#endif - - -#ifdef NEED_GENERIC_CDC - -#include <linux/usb_cdc.h> - -static struct usb_driver usbnet_driver; - -/* - * 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. - */ -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; - - 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; - if (len) - dev_dbg (&intf->dev, - "CDC descriptors on config\n"); - } - - /* this assumes that if there's a non-RNDIS vendor variant - * of cdc-acm, it'll fail RNDIS requests cleanly. - */ - rndis = (intf->cur_altsetting->desc.bInterfaceProtocol == 0xff); - - 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_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); - 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; - } - - /* 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; - } -next_desc: - len -= buf [0]; /* bLength */ - buf += buf [0]; - } - - 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. - */ - status = usb_driver_claim_interface (&usbnet_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); - usb_driver_release_interface (&usbnet_driver, info->data); - return status; - } - - /* status endpoint: optional for CDC Ethernet, not RNDIS (or ACM) */ - 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 (desc->bmAttributes != USB_ENDPOINT_XFER_INT - || !(desc->bEndpointAddress & USB_DIR_IN) - || (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 (&usbnet_driver, info->data); - return -ENODEV; - } - 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; - - /* 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 (&usbnet_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 (&usbnet_driver, info->control); - info->control = NULL; - } -} -EXPORT_SYMBOL_GPL(usbnet_cdc_unbind); - -#endif /* NEED_GENERIC_CDC */ - - -#ifdef CONFIG_USB_CDCETHER -#define HAVE_HARDWARE - -/*------------------------------------------------------------------------- - * - * Communications Device Class, Ethernet Control model - * - * Takes two interfaces. The DATA interface is inactive till an altsetting - * is selected. Configuration data includes class descriptors. - * - * This should interop with whatever the 2.4 "CDCEther.c" driver - * (by Brad Hards) talked with. - * - *-------------------------------------------------------------------------*/ - -#include <linux/ctype.h> - - -static void dumpspeed (struct usbnet *dev, __le32 *speeds) -{ - if (netif_msg_timer (dev)) - devinfo (dev, "link speeds: %u kbps up, %u kbps down", - __le32_to_cpu(speeds[0]) / 1000, - __le32_to_cpu(speeds[1]) / 1000); -} - -static void 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: - if (netif_msg_timer (dev)) - devdbg (dev, "CDC: carrier %s", - event->wValue ? "on" : "off"); - if (event->wValue) - netif_carrier_on(dev->net); - else - netif_carrier_off(dev->net); - break; - case USB_CDC_NOTIFY_SPEED_CHANGE: /* tx/rx rates */ - if (netif_msg_timer (dev)) - devdbg (dev, "CDC: speed change (len %d)", - urb->actual_length); - if (urb->actual_length != (sizeof *event + 8)) - set_bit (EVENT_STS_SPLIT, &dev->flags); - else - dumpspeed (dev, (__le32 *) &event[1]); - break; - // case USB_CDC_NOTIFY_RESPONSE_AVAILABLE: /* RNDIS; or unsolicited */ - default: - deverr (dev, "CDC: unexpected notification %02x!", - event->bNotificationType); - break; - } -} - -static u8 nibble (unsigned char c) -{ - if (likely (isdigit (c))) - return c - '0'; - c = toupper (c); - if (likely (isxdigit (c))) - return 10 + c - 'A'; - return 0; -} - -static inline int -get_ethernet_addr (struct usbnet *dev, struct usb_cdc_ether_desc *e) -{ - int tmp, i; - unsigned char buf [13]; - - tmp = usb_string (dev->udev, e->iMACAddress, buf, sizeof buf); - if (tmp != 12) { - dev_dbg (&dev->udev->dev, - "bad MAC string %d fetch, %d\n", e->iMACAddress, tmp); - if (tmp >= 0) - tmp = -EINVAL; - return tmp; - } - for (i = tmp = 0; i < 6; i++, tmp += 2) - dev->net->dev_addr [i] = - (nibble (buf [tmp]) << 4) + nibble (buf [tmp + 1]); - return 0; -} - -static int cdc_bind (struct usbnet *dev, struct usb_interface *intf) -{ - int status; - struct cdc_state *info = (void *) &dev->data; - - status = usbnet_generic_cdc_bind (dev, intf); - if (status < 0) - return status; - - status = get_ethernet_addr (dev, info->ether); - if (status < 0) { - usb_set_intfdata(info->data, NULL); - usb_driver_release_interface (&usbnet_driver, info->data); - return status; - } - - /* FIXME cdc-ether has some multicast code too, though it complains - * in routine cases. info->ether describes the multicast support. - */ - return 0; -} - -static const struct driver_info cdc_info = { - .description = "CDC Ethernet Device", - .flags = FLAG_ETHER, - // .check_connect = cdc_check_connect, - .bind = cdc_bind, - .unbind = usbnet_cdc_unbind, - .status = cdc_status, -}; - -#endif /* CONFIG_USB_CDCETHER */ - - - #ifdef CONFIG_USB_PL2301 #define HAVE_HARDWARE @@ -1754,23 +1383,6 @@ static const struct usb_device_id products [] = { .driver_info = (unsigned long) &rndis_info, }, #endif - -#ifdef CONFIG_USB_CDCETHER -{ - /* 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 working around - * bugs/quirks in a given product (like Zaurus, above). - */ - USB_INTERFACE_INFO (USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET, - USB_CDC_PROTO_NONE), - .driver_info = (unsigned long) &cdc_info, -}, -#endif - { }, // END }; MODULE_DEVICE_TABLE (usb, products); @@ -1792,10 +1404,6 @@ static int __init usbnet_init(void) // compiler should optimize these out BUG_ON (sizeof (((struct sk_buff *)0)->cb) < sizeof (struct skb_data)); -#ifdef CONFIG_USB_CDCETHER - BUG_ON ((sizeof (((struct usbnet *)0)->data) - < sizeof (struct cdc_state))); -#endif random_ether_addr(node_id); |
