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path: root/drivers/usb/net/usbnet.c
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Diffstat (limited to 'drivers/usb/net/usbnet.c')
-rw-r--r--drivers/usb/net/usbnet.c392
1 files changed, 0 insertions, 392 deletions
diff --git a/drivers/usb/net/usbnet.c b/drivers/usb/net/usbnet.c
index 75a05ab0a64..7703725327d 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);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-05 23:56:55 +0000