CDCEther.c
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上传日期:2013-04-10
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文件大小:47k
- // Portions of this file taken from
- // Petko Manolov - Petkan (petkan@dce.bg)
- // from his driver pegasus.c
- /*
- * 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
- */
- #include <linux/sched.h>
- #include <linux/slab.h>
- #include <linux/init.h>
- #include <linux/delay.h>
- #include <linux/netdevice.h>
- #include <linux/etherdevice.h>
- #include <linux/module.h>
- #include <linux/ethtool.h>
- #include <asm/uaccess.h>
- #define DEBUG
- #include <linux/usb.h>
- #include "CDCEther.h"
- #define SHORT_DRIVER_DESC "CDC Ethernet Class"
- #define DRIVER_VERSION "0.98.6"
- static const char *version = __FILE__ ": " DRIVER_VERSION " 7 Jan 2002 Brad Hards and another";
- // We only try to claim CDC Ethernet model devices */
- static struct usb_device_id CDCEther_ids[] = {
- { USB_INTERFACE_INFO(USB_CLASS_COMM, 6, 0) },
- { }
- };
- /*
- * module parameter that provides an alternate upper limit on the
- * number of multicast filters we use, with a default to use all
- * the filters available to us. Note that the actual number used
- * is the lesser of this parameter and the number returned in the
- * descriptor for the particular device. See Table 41 of the CDC
- * spec for more info on the descriptor limit.
- */
- static int multicast_filter_limit = 32767;
- //////////////////////////////////////////////////////////////////////////////
- // Callback routines from USB device /////////////////////////////////////////
- //////////////////////////////////////////////////////////////////////////////
- static void read_bulk_callback( struct urb *urb )
- {
- ether_dev_t *ether_dev = urb->context;
- struct net_device *net;
- int count = urb->actual_length, res;
- struct sk_buff *skb;
- switch ( urb->status ) {
- case USB_ST_NOERROR:
- break;
- case USB_ST_URB_KILLED:
- return;
- default:
- dbg("rx status %d", urb->status);
- }
- // Sanity check
- if ( !ether_dev || !(ether_dev->flags & CDC_ETHER_RUNNING) ) {
- dbg("BULK IN callback but driver is not active!");
- return;
- }
- net = ether_dev->net;
- if ( !netif_device_present(net) ) {
- // Somebody killed our network interface...
- return;
- }
- if ( ether_dev->flags & CDC_ETHER_RX_BUSY ) {
- // Are we already trying to receive a frame???
- ether_dev->stats.rx_errors++;
- dbg("ether_dev Rx busy");
- return;
- }
- // We are busy, leave us alone!
- ether_dev->flags |= CDC_ETHER_RX_BUSY;
- switch ( urb->status ) {
- case USB_ST_NOERROR:
- break;
- case USB_ST_NORESPONSE:
- dbg( "no repsonse in BULK IN" );
- ether_dev->flags &= ~CDC_ETHER_RX_BUSY;
- break;
- default:
- dbg( "%s: RX status %d", net->name, urb->status );
- goto goon;
- }
- // Check to make sure we got some data...
- if ( !count ) {
- // We got no data!!!
- goto goon;
- }
- // Tell the kernel we want some memory
- if ( !(skb = dev_alloc_skb(count)) ) {
- // We got no receive buffer.
- goto goon;
- }
- // Here's where it came from
- skb->dev = net;
-
- // Now we copy it over
- eth_copy_and_sum(skb, ether_dev->rx_buff, count, 0);
-
- // Not sure
- skb_put(skb, count);
- // Not sure here either
- skb->protocol = eth_type_trans(skb, net);
-
- // Ship it off to the kernel
- netif_rx(skb);
-
- // update out statistics
- ether_dev->stats.rx_packets++;
- ether_dev->stats.rx_bytes += count;
- goon:
- // Prep the USB to wait for another frame
- FILL_BULK_URB( ðer_dev->rx_urb, ether_dev->usb,
- usb_rcvbulkpipe(ether_dev->usb, ether_dev->data_ep_in),
- ether_dev->rx_buff, ether_dev->wMaxSegmentSize,
- read_bulk_callback, ether_dev );
-
- // Give this to the USB subsystem so it can tell us
- // when more data arrives.
- if ( (res = usb_submit_urb(ðer_dev->rx_urb)) ) {
- warn("%s failed submit rx_urb %d", __FUNCTION__, res);
- }
-
- // We are no longer busy, show us the frames!!!
- ether_dev->flags &= ~CDC_ETHER_RX_BUSY;
- }
- static void write_bulk_callback( struct urb *urb )
- {
- ether_dev_t *ether_dev = urb->context;
- // Sanity check
- if ( !ether_dev || !(ether_dev->flags & CDC_ETHER_RUNNING) ) {
- // We are insane!!!
- err( "write_bulk_callback: device not running" );
- return;
- }
- // Do we still have a valid kernel network device?
- if ( !netif_device_present(ether_dev->net) ) {
- // Someone killed our network interface.
- err( "write_bulk_callback: net device not present" );
- return;
- }
- // Hmm... What on Earth could have happened???
- if ( urb->status ) {
- dbg("%s: TX status %d", ether_dev->net->name, urb->status);
- }
- // Update the network interface and tell it we are
- // ready for another frame
- ether_dev->net->trans_start = jiffies;
- netif_wake_queue( ether_dev->net );
- }
- #if 0
- static void setpktfilter_done( struct urb *urb )
- {
- ether_dev_t *ether_dev = urb->context;
- struct net_device *net;
- if ( !ether_dev )
- return;
- dbg("got ctrl callback for setting packet filter");
- switch ( urb->status ) {
- case USB_ST_NOERROR:
- break;
- case USB_ST_URB_KILLED:
- return;
- default:
- dbg("intr status %d", urb->status);
- }
- }
- #endif
- static void intr_callback( struct urb *urb )
- {
- ether_dev_t *ether_dev = urb->context;
- struct net_device *net;
- __u8 *d;
- if ( !ether_dev )
- return;
- dbg("got intr callback");
- switch ( urb->status ) {
- case USB_ST_NOERROR:
- break;
- case USB_ST_URB_KILLED:
- return;
- default:
- dbg("intr status %d", urb->status);
- }
- d = urb->transfer_buffer;
- dbg("d: %x", d[0]);
- net = ether_dev->net;
- if ( d[0] & 0xfc ) {
- ether_dev->stats.tx_errors++;
- if ( d[0] & TX_UNDERRUN )
- ether_dev->stats.tx_fifo_errors++;
- if ( d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT) )
- ether_dev->stats.tx_aborted_errors++;
- if ( d[0] & LATE_COL )
- ether_dev->stats.tx_window_errors++;
- if ( d[0] & (NO_CARRIER | LOSS_CARRIER) )
- netif_carrier_off(net);
- }
- }
- //////////////////////////////////////////////////////////////////////////////
- // Routines for turning net traffic on and off on the USB side ///////////////
- //////////////////////////////////////////////////////////////////////////////
- static inline int enable_net_traffic( ether_dev_t *ether_dev )
- {
- struct usb_device *usb = ether_dev->usb;
- // Here would be the time to set the data interface to the configuration where
- // it has two endpoints that use a protocol we can understand.
- if (usb_set_interface( usb,
- ether_dev->data_bInterfaceNumber,
- ether_dev->data_bAlternateSetting_with_traffic ) ) {
- err("usb_set_interface() failed" );
- err("Attempted to set interface %d", ether_dev->data_bInterfaceNumber);
- err("To alternate setting %d", ether_dev->data_bAlternateSetting_with_traffic);
- return -1;
- }
- return 0;
- }
- static inline void disable_net_traffic( ether_dev_t *ether_dev )
- {
- // The thing to do is to set the data interface to the alternate setting that has
- // no endpoints. This is what the spec suggests.
- if (ether_dev->data_interface_altset_num_without_traffic >= 0 ) {
- if (usb_set_interface( ether_dev->usb,
- ether_dev->data_bInterfaceNumber,
- ether_dev->data_bAlternateSetting_without_traffic ) ) {
- err("usb_set_interface() failed");
- }
- } else {
- // Some devices just may not support this...
- warn("No way to disable net traffic");
- }
- }
- //////////////////////////////////////////////////////////////////////////////
- // Callback routines for kernel Ethernet Device //////////////////////////////
- //////////////////////////////////////////////////////////////////////////////
- static void CDCEther_tx_timeout( struct net_device *net )
- {
- ether_dev_t *ether_dev = net->priv;
- // Sanity check
- if ( !ether_dev ) {
- // Seems to be a case of insanity here
- return;
- }
- // Tell syslog we are hosed.
- warn("%s: Tx timed out.", net->name);
-
- // Tear the waiting frame off the list
- ether_dev->tx_urb.transfer_flags |= USB_ASYNC_UNLINK;
- usb_unlink_urb( ðer_dev->tx_urb );
-
- // Update statistics
- ether_dev->stats.tx_errors++;
- }
- static int CDCEther_start_xmit( struct sk_buff *skb, struct net_device *net )
- {
- ether_dev_t *ether_dev = net->priv;
- int count;
- int res;
- // If we are told to transmit an ethernet frame that fits EXACTLY
- // into an integer number of USB packets, we force it to send one
- // more byte so the device will get a runt USB packet signalling the
- // end of the ethernet frame
- if ( (skb->len) ^ (ether_dev->data_ep_out_size) ) {
- // It was not an exact multiple
- // no need to add anything extra
- count = skb->len;
- } else {
- // Add one to make it NOT an exact multiple
- count = skb->len + 1;
- }
- // Tell the kernel, "No more frames 'til we are done
- // with this one.'
- netif_stop_queue( net );
- // Copy it from kernel memory to OUR memory
- memcpy(ether_dev->tx_buff, skb->data, skb->len);
- // Fill in the URB for shipping it out.
- FILL_BULK_URB( ðer_dev->tx_urb, ether_dev->usb,
- usb_sndbulkpipe(ether_dev->usb, ether_dev->data_ep_out),
- ether_dev->tx_buff, ether_dev->wMaxSegmentSize,
- write_bulk_callback, ether_dev );
- // Tell the URB how much it will be transporting today
- ether_dev->tx_urb.transfer_buffer_length = count;
-
- // Send the URB on its merry way.
- if ((res = usb_submit_urb(ðer_dev->tx_urb))) {
- // Hmm... It didn't go. Tell someone...
- warn("failed tx_urb %d", res);
- // update some stats...
- ether_dev->stats.tx_errors++;
- // and tell the kernel to give us another.
- // Maybe we'll get it right next time.
- netif_start_queue( net );
- } else {
- // Okay, it went out.
- // Update statistics
- ether_dev->stats.tx_packets++;
- ether_dev->stats.tx_bytes += skb->len;
- // And tell the kernel when the last transmit occurred.
- net->trans_start = jiffies;
- }
- // We are done with the kernel's memory
- dev_kfree_skb(skb);
- // We are done here.
- return 0;
- }
- //////////////////////////////////////////////////////////////////////////////
- // Standard routines for kernel Ethernet Device //////////////////////////////
- //////////////////////////////////////////////////////////////////////////////
- static struct net_device_stats *CDCEther_netdev_stats( struct net_device *net )
- {
- // Easy enough!
- return &((ether_dev_t *)net->priv)->stats;
- }
- static int CDCEther_open(struct net_device *net)
- {
- ether_dev_t *ether_dev = (ether_dev_t *)net->priv;
- int res;
- // Turn on the USB and let the packets flow!!!
- if ( (res = enable_net_traffic( ether_dev )) ) {
- err("%s can't enable_net_traffic() - %d", __FUNCTION__, res );
- return -EIO;
- }
- /* Prep a receive URB */
- FILL_BULK_URB( ðer_dev->rx_urb, ether_dev->usb,
- usb_rcvbulkpipe(ether_dev->usb, ether_dev->data_ep_in),
- ether_dev->rx_buff, ether_dev->wMaxSegmentSize,
- read_bulk_callback, ether_dev );
- /* Put it out there so the device can send us stuff */
- if ( (res = usb_submit_urb(ðer_dev->rx_urb)) ) {
- /* Hmm... Okay... */
- warn( "%s failed rx_urb %d", __FUNCTION__, res );
- }
- if (ether_dev->properties & HAVE_NOTIFICATION_ELEMENT) {
- /* Arm and submit the interrupt URB */
- FILL_INT_URB( ðer_dev->intr_urb,
- ether_dev->usb,
- usb_rcvintpipe(ether_dev->usb, ether_dev->comm_ep_in),
- ether_dev->intr_buff,
- 8, /* Transfer buffer length */
- intr_callback,
- ether_dev,
- ether_dev->intr_interval);
- if ( (res = usb_submit_urb(ðer_dev->intr_urb)) ) {
- warn("%s failed intr_urb %d", __FUNCTION__, res );
- }
- }
- // Tell the kernel we are ready to start receiving from it
- netif_start_queue( net );
-
- // We are up and running.
- ether_dev->flags |= CDC_ETHER_RUNNING;
- // Let's get ready to move frames!!!
- return 0;
- }
- static int CDCEther_close( struct net_device *net )
- {
- ether_dev_t *ether_dev = net->priv;
- // We are no longer running.
- ether_dev->flags &= ~CDC_ETHER_RUNNING;
-
- // Tell the kernel to stop sending us stuff
- netif_stop_queue( net );
-
- // If we are not already unplugged, turn off USB
- // traffic
- if ( !(ether_dev->flags & CDC_ETHER_UNPLUG) ) {
- disable_net_traffic( ether_dev );
- }
- // We don't need the URBs anymore.
- usb_unlink_urb( ðer_dev->rx_urb );
- usb_unlink_urb( ðer_dev->tx_urb );
- usb_unlink_urb( ðer_dev->intr_urb );
- usb_unlink_urb( ðer_dev->ctrl_urb );
- // That's it. I'm done.
- return 0;
- }
- static int netdev_ethtool_ioctl(struct net_device *netdev, void *useraddr)
- {
- ether_dev_t *ether_dev = netdev->priv;
- u32 cmd;
- char tmp[40];
- if (get_user(cmd, (u32 *)useraddr))
- return -EFAULT;
- switch (cmd) {
- /* get driver info */
- case ETHTOOL_GDRVINFO: {
- struct ethtool_drvinfo info = {ETHTOOL_GDRVINFO};
- strncpy(info.driver, SHORT_DRIVER_DESC, ETHTOOL_BUSINFO_LEN);
- strncpy(info.version, DRIVER_VERSION, ETHTOOL_BUSINFO_LEN);
- sprintf(tmp, "usb%d:%d", ether_dev->usb->bus->busnum, ether_dev->usb->devnum);
- strncpy(info.bus_info, tmp, ETHTOOL_BUSINFO_LEN);
- sprintf(tmp, "CDC %x.%x", ((ether_dev->bcdCDC & 0xff00)>>8), (ether_dev->bcdCDC & 0x00ff) );
- strncpy(info.fw_version, tmp, ETHTOOL_BUSINFO_LEN);
- if (copy_to_user(useraddr, &info, sizeof(info)))
- return -EFAULT;
- return 0;
- }
- /* get link status */
- case ETHTOOL_GLINK: {
- struct ethtool_value edata = {ETHTOOL_GLINK};
- edata.data = netif_carrier_ok(netdev);
- if (copy_to_user(useraddr, &edata, sizeof(edata)))
- return -EFAULT;
- return 0;
- }
- }
- dbg("Got unsupported ioctl: %x", cmd);
- return -EOPNOTSUPP; /* the ethtool user space tool relies on this */
- }
- static int CDCEther_ioctl( struct net_device *net, struct ifreq *rq, int cmd )
- {
- switch(cmd) {
- case SIOCETHTOOL:
- return netdev_ethtool_ioctl(net, (void *) rq->ifr_data);
- default:
- return -ENOTTY; /* per ioctl man page */
- }
- }
- /* Multicast routines */
- static void CDC_SetEthernetPacketFilter (ether_dev_t *ether_dev)
- {
- #if 0
- struct usb_ctrlrequest *dr = ðer_dev->ctrl_dr;
- int res;
- dr->bRequestType = USB_TYPE_CLASS | USB_DIR_OUT | USB_RECIP_INTERFACE;
- dr->bRequest = SET_ETHERNET_PACKET_FILTER;
- dr->wValue = cpu_to_le16(ether_dev->mode_flags);
- dr->wIndex = cpu_to_le16((u16)ether_dev->comm_interface);
- dr->wLength = 0;
- FILL_CONTROL_URB(ðer_dev->ctrl_urb,
- ether_dev->usb,
- usb_sndctrlpipe(ether_dev->usb, 0),
- dr,
- NULL,
- NULL,
- setpktfilter_done,
- ether_dev);
- if ( (res = usb_submit_urb(ðer_dev->ctrl_urb)) ) {
- warn("%s failed submit ctrl_urb %d", __FUNCTION__, res);
- }
- #endif
- }
- static void CDCEther_set_multicast( struct net_device *net )
- {
- ether_dev_t *ether_dev = net->priv;
- int i;
- __u8 *buff;
- // Tell the kernel to stop sending us frames while we get this
- // all set up.
- netif_stop_queue(net);
- /* Note: do not reorder, GCC is clever about common statements. */
- if (net->flags & IFF_PROMISC) {
- /* Unconditionally log net taps. */
- dbg( "%s: Promiscuous mode enabled", net->name);
- ether_dev->mode_flags = MODE_FLAG_PROMISCUOUS |
- MODE_FLAG_ALL_MULTICAST |
- MODE_FLAG_DIRECTED |
- MODE_FLAG_BROADCAST |
- MODE_FLAG_MULTICAST;
- } else if (net->mc_count > ether_dev->wNumberMCFilters) {
- /* Too many to filter perfectly -- accept all multicasts. */
- dbg("%s: too many MC filters for hardware, using allmulti", net->name);
- ether_dev->mode_flags = MODE_FLAG_ALL_MULTICAST |
- MODE_FLAG_DIRECTED |
- MODE_FLAG_BROADCAST |
- MODE_FLAG_MULTICAST;
- } else if (net->flags & IFF_ALLMULTI) {
- /* Filter in software */
- dbg("%s: using allmulti", net->name);
- ether_dev->mode_flags = MODE_FLAG_ALL_MULTICAST |
- MODE_FLAG_DIRECTED |
- MODE_FLAG_BROADCAST |
- MODE_FLAG_MULTICAST;
- } else {
- /* do multicast filtering in hardware */
- struct dev_mc_list *mclist;
- dbg("%s: set multicast filters", net->name);
- ether_dev->mode_flags = MODE_FLAG_ALL_MULTICAST |
- MODE_FLAG_DIRECTED |
- MODE_FLAG_BROADCAST |
- MODE_FLAG_MULTICAST;
- buff = kmalloc(6 * net->mc_count, in_interrupt() ? GFP_ATOMIC : GFP_KERNEL);
- for (i = 0, mclist = net->mc_list;
- mclist && i < net->mc_count;
- i++, mclist = mclist->next) {
- memcpy(&mclist->dmi_addr, &buff[i * 6], 6);
- }
- #if 0
- usb_control_msg(ether_dev->usb,
- usb_sndctrlpipe(ether_dev->usb, 0),
- SET_ETHERNET_MULTICAST_FILTER, /* request */
- USB_TYPE_CLASS | USB_DIR_OUT | USB_RECIP_INTERFACE, /* request type */
- cpu_to_le16(net->mc_count), /* value */
- cpu_to_le16((u16)ether_dev->comm_interface), /* index */
- buff,
- (6* net->mc_count), /* size */
- HZ); /* timeout */
- #endif
- kfree(buff);
- }
- CDC_SetEthernetPacketFilter(ether_dev);
- /* Tell the kernel to start giving frames to us again. */
- netif_wake_queue(net);
- }
- //////////////////////////////////////////////////////////////////////////////
- // Routines used to parse out the Functional Descriptors /////////////////////
- //////////////////////////////////////////////////////////////////////////////
- /* Header Descriptor - CDC Spec 5.2.3.1, Table 26 */
- static int parse_header_functional_descriptor( int *bFunctionLength,
- int bDescriptorType,
- int bDescriptorSubtype,
- unsigned char *data,
- ether_dev_t *ether_dev,
- int *requirements )
- {
- /* Check to make sure we haven't seen one of these already. */
- if ( (~*requirements) & REQ_HDR_FUNC_DESCR ) {
- err( "Multiple Header Functional Descriptors found." );
- return -1;
- }
- /* Check for appropriate length */
- if (*bFunctionLength != HEADER_FUNC_DESC_LEN) {
- dbg( "Invalid length in Header Functional Descriptor, working around it." );
- /* This is a hack to get around a particular device (NO NAMES)
- * It has this function length set to the length of the
- * whole class-specific descriptor */
- *bFunctionLength = HEADER_FUNC_DESC_LEN;
- }
-
- /* Nothing extremely useful here */
- /* We'll keep it for posterity */
- ether_dev->bcdCDC = data[0] + (data[1] << 8);
- dbg( "Found Header descriptor, CDC version %x.", ether_dev->bcdCDC);
- /* We've seen one of these */
- *requirements &= ~REQ_HDR_FUNC_DESCR;
- /* Success */
- return 0;
- }
- /* Union Descriptor - CDC Spec 5.2.3.8, Table 33 */
- static int parse_union_functional_descriptor( int *bFunctionLength,
- int bDescriptorType,
- int bDescriptorSubtype,
- unsigned char *data,
- ether_dev_t *ether_dev,
- int *requirements )
- {
- /* Check to make sure we haven't seen one of these already. */
- if ( (~*requirements) & REQ_UNION_FUNC_DESCR ) {
- err( "Multiple Union Functional Descriptors found." );
- return -1;
- }
- /* Check for appropriate length */
- if (*bFunctionLength != UNION_FUNC_DESC_LEN) {
- // It is NOT the size we expected.
- err( "Invalid length in Union Functional Descriptor." );
- return -1;
- }
-
- /* Sanity check of sorts */
- if (ether_dev->comm_interface != data[0]) {
- /* This tells us that we are chasing the wrong comm
- * interface or we are crazy or something else weird. */
- if (ether_dev->comm_interface == data[1]) {
- dbg( "Probably broken Union descriptor, fudging data interface." );
- /* We'll need this in a few microseconds,
- * so if the comm interface was the first slave,
- * then probably the master interface is the data one
- * Just hope for the best */
- ether_dev->data_interface = data[0];
- } else {
- err( "Union Functional Descriptor is broken beyond repair." );
- return -1;
- }
- } else{ /* Descriptor is OK */
- ether_dev->data_interface = data[1];
- }
- /* We've seen one of these */
- *requirements &= ~REQ_UNION_FUNC_DESCR;
- /* Success */
- return 0;
- }
- /* Ethernet Descriptor - CDC Spec 5.2.3.16, Table 41 */
- static int parse_ethernet_functional_descriptor( int *bFunctionLength,
- int bDescriptorType,
- int bDescriptorSubtype,
- unsigned char *data,
- ether_dev_t *ether_dev,
- int *requirements )
- {
- //* Check to make sure we haven't seen one of these already. */
- if ( (~*requirements) & REQ_ETH_FUNC_DESCR ) {
- err( "Multiple Ethernet Functional Descriptors found." );
- return -1;
- }
-
- /* Check for appropriate length */
- if (*bFunctionLength != ETHERNET_FUNC_DESC_LEN) {
- err( "Invalid length in Ethernet Networking Functional Descriptor." );
- return -1;
- }
- /* Lots of goodies from this one. They are all important. */
- ether_dev->iMACAddress = data[0];
- ether_dev->bmEthernetStatistics = data[1] + (data[2] << 8) + (data[3] << 16) + (data[4] << 24);
- ether_dev->wMaxSegmentSize = data[5] + (data[6] << 8);
- ether_dev->wNumberMCFilters = (data[7] + (data[8] << 8));
- if (ether_dev->wNumberMCFilters & (1 << 15)) {
- ether_dev->properties |= PERFECT_FILTERING;
- dbg("Perfect filtering support");
- } else {
- dbg("Imperfect filtering support - need sw hashing");
- }
- if (0 == (ether_dev->wNumberMCFilters & (0x7f))) {
- ether_dev->properties |= NO_SET_MULTICAST;
- dbg("Can't use SetEthernetMulticastFilters request");
- }
- if (ether_dev->wNumberMCFilters > multicast_filter_limit) {
- ether_dev->wNumberMCFilters = multicast_filter_limit;
- }
- ether_dev->bNumberPowerFilters = data[9];
-
- /* We've seen one of these */
- *requirements &= ~REQ_ETH_FUNC_DESCR;
- /* Success */
- return 0;
- }
- static int parse_protocol_unit_functional_descriptor( int *bFunctionLength,
- int bDescriptorType,
- int bDescriptorSubtype,
- unsigned char *data,
- ether_dev_t *ether_dev,
- int *requirements )
- {
- /* There should only be one type if we are sane */
- if (bDescriptorType != CS_INTERFACE) {
- err( "Invalid bDescriptorType found." );
- return -1;
- }
- /* The Subtype tells the tale - CDC spec Table 25 */
- switch (bDescriptorSubtype) {
- case 0x00: /* Header Functional Descriptor */
- return parse_header_functional_descriptor( bFunctionLength,
- bDescriptorType,
- bDescriptorSubtype,
- data,
- ether_dev,
- requirements );
- break;
- case 0x06: /* Union Functional Descriptor */
- return parse_union_functional_descriptor( bFunctionLength,
- bDescriptorType,
- bDescriptorSubtype,
- data,
- ether_dev,
- requirements );
- break;
- case 0x0F: /* Ethernet Networking Functional Descriptor */
- return parse_ethernet_functional_descriptor( bFunctionLength,
- bDescriptorType,
- bDescriptorSubtype,
- data,
- ether_dev,
- requirements );
- break;
- default: /* We don't support this at this time... */
- /* However that doesn't necessarily indicate an error. */
- dbg( "Unexpected header type %x.", bDescriptorSubtype );
- return 0;
- }
- /* How did we get here? */
- return -1;
- }
- static int parse_ethernet_class_information( unsigned char *data, int length, ether_dev_t *ether_dev )
- {
- int loc = 0;
- int rc;
- int bFunctionLength;
- int bDescriptorType;
- int bDescriptorSubtype;
- int requirements = REQUIREMENTS_TOTAL; /* We init to our needs, and then clear
- * bits as we find the descriptors */
- /* As long as there is something here, we will try to parse it */
- /* All of the functional descriptors start with the same 3 byte pattern */
- while (loc < length) {
- /* Length */
- bFunctionLength = data[loc];
- loc++;
- /* Type */
- bDescriptorType = data[loc];
- loc++;
- /* Subtype */
- bDescriptorSubtype = data[loc];
- loc++;
-
- /* ship this off to be processed */
- rc = parse_protocol_unit_functional_descriptor( &bFunctionLength,
- bDescriptorType,
- bDescriptorSubtype,
- &data[loc],
- ether_dev,
- &requirements );
- /* Did it process okay? */
- if (rc) {
- /* Something was hosed somewhere. */
- /* No need to continue */
- err("Bad descriptor parsing: %x", rc );
- return -1;
- }
- /* We move the loc pointer along, remembering
- * that we have already taken three bytes */
- loc += (bFunctionLength - 3);
- }
- /* Check to see if we got everything we need. */
- if (requirements) {
- // We missed some of the requirements...
- err( "Not all required functional descriptors present 0x%08X.", requirements );
- return -1;
- }
- /* We got everything */
- return 0;
- }
- //////////////////////////////////////////////////////////////////////////////
- // Routine to check for the existence of the Functional Descriptors //////////
- //////////////////////////////////////////////////////////////////////////////
- static int find_and_parse_ethernet_class_information( struct usb_device *device, ether_dev_t *ether_dev )
- {
- struct usb_config_descriptor *conf = NULL;
- struct usb_interface *comm_intf_group = NULL;
- struct usb_interface_descriptor *comm_intf = NULL;
- int rc = -1;
- /* The assumption here is that find_ethernet_comm_interface
- * and find_valid_configuration
- * have already filled in the information about where to find
- * the a valid commication interface. */
- conf = &( device->config[ether_dev->configuration_num] );
- comm_intf_group = &( conf->interface[ether_dev->comm_interface] );
- comm_intf = &( comm_intf_group->altsetting[ether_dev->comm_interface_altset_num] );
- /* Let's check and see if it has the extra information we need */
- if (comm_intf->extralen > 0) {
- /* This is where the information is SUPPOSED to be */
- rc = parse_ethernet_class_information( comm_intf->extra, comm_intf->extralen, ether_dev );
- } else if (conf->extralen > 0) {
- /* This is a hack. The spec says it should be at the interface
- * location checked above. However I have seen it here also.
- * This is the same device that requires the functional descriptor hack above */
- dbg( "Ethernet information found at device configuration. Trying to use it anyway." );
- rc = parse_ethernet_class_information( conf->extra, conf->extralen, ether_dev );
- } else {
- /* I don't know where else to look */
- err( "No ethernet information found." );
- rc = -1;
- }
- return rc;
- }
- //////////////////////////////////////////////////////////////////////////////
- // Routines to verify the data interface /////////////////////////////////////
- //////////////////////////////////////////////////////////////////////////////
- static int get_data_interface_endpoints( struct usb_device *device, ether_dev_t *ether_dev )
- {
- struct usb_config_descriptor *conf = NULL;
- struct usb_interface *data_intf_group = NULL;
- struct usb_interface_descriptor *data_intf = NULL;
- /* Walk through and get to the data interface we are checking. */
- conf = &( device->config[ether_dev->configuration_num] );
- data_intf_group = &( conf->interface[ether_dev->data_interface] );
- data_intf = &( data_intf_group->altsetting[ether_dev->data_interface_altset_num_with_traffic] );
- /* Start out assuming we won't find anything we can use */
- ether_dev->data_ep_in = 0;
- ether_dev->data_ep_out = 0;
- /* If these are not BULK endpoints, we don't want them */
- if ( data_intf->endpoint[0].bmAttributes != USB_ENDPOINT_XFER_BULK ) {
- return -1;
- }
- if ( data_intf->endpoint[1].bmAttributes != USB_ENDPOINT_XFER_BULK ) {
- return -1;
- }
- /* Check the first endpoint to see if it is IN or OUT */
- if ( data_intf->endpoint[0].bEndpointAddress & USB_DIR_IN ) {
- ether_dev->data_ep_in = data_intf->endpoint[0].bEndpointAddress & 0x7F;
- } else {
- ether_dev->data_ep_out = data_intf->endpoint[0].bEndpointAddress;
- ether_dev->data_ep_out_size = data_intf->endpoint[0].wMaxPacketSize;
- }
- /* Check the second endpoint to see if it is IN or OUT */
- if ( data_intf->endpoint[1].bEndpointAddress & USB_DIR_IN ) {
- ether_dev->data_ep_in = data_intf->endpoint[1].bEndpointAddress & 0x7F;
- } else {
- ether_dev->data_ep_out = data_intf->endpoint[1].bEndpointAddress;
- ether_dev->data_ep_out_size = data_intf->endpoint[1].wMaxPacketSize;
- }
- /* Now make sure we got both an IN and an OUT */
- if (ether_dev->data_ep_in && ether_dev->data_ep_out) {
- dbg( "detected BULK OUT packets of size %d", ether_dev->data_ep_out_size );
- return 0;
- }
- return -1;
- }
- static int verify_ethernet_data_interface( struct usb_device *device, ether_dev_t *ether_dev )
- {
- struct usb_config_descriptor *conf = NULL;
- struct usb_interface *data_intf_group = NULL;
- struct usb_interface_descriptor *data_intf = NULL;
- int rc = -1;
- int status;
- int altset_num;
- // The assumption here is that parse_ethernet_class_information()
- // and find_valid_configuration()
- // have already filled in the information about where to find
- // a data interface
- conf = &( device->config[ether_dev->configuration_num] );
- data_intf_group = &( conf->interface[ether_dev->data_interface] );
- // start out assuming we won't find what we are looking for.
- ether_dev->data_interface_altset_num_with_traffic = -1;
- ether_dev->data_bAlternateSetting_with_traffic = -1;
- ether_dev->data_interface_altset_num_without_traffic = -1;
- ether_dev->data_bAlternateSetting_without_traffic = -1;
- // Walk through every possible setting for this interface until
- // we find what makes us happy.
- for ( altset_num = 0; altset_num < data_intf_group->num_altsetting; altset_num++ ) {
- data_intf = &( data_intf_group->altsetting[altset_num] );
- // Is this a data interface we like?
- if ( ( data_intf->bInterfaceClass == 0x0A )
- && ( data_intf->bInterfaceSubClass == 0x00 )
- && ( data_intf->bInterfaceProtocol == 0x00 ) ) {
- if ( data_intf->bNumEndpoints == 2 ) {
- // We are required to have one of these.
- // An interface with 2 endpoints to send Ethernet traffic back and forth
- // It actually may be possible that the device might only
- // communicate in a vendor specific manner.
- // That would not be very nice.
- // We can add that one later.
- ether_dev->data_bInterfaceNumber = data_intf->bInterfaceNumber;
- ether_dev->data_interface_altset_num_with_traffic = altset_num;
- ether_dev->data_bAlternateSetting_with_traffic = data_intf->bAlternateSetting;
- status = get_data_interface_endpoints( device, ether_dev );
- if (!status) {
- rc = 0;
- }
- }
- if ( data_intf->bNumEndpoints == 0 ) {
- // According to the spec we are SUPPOSED to have one of these
- // In fact the device is supposed to come up in this state.
- // However, I have seen a device that did not have such an interface.
- // So it must be just optional for our driver...
- ether_dev->data_bInterfaceNumber = data_intf->bInterfaceNumber;
- ether_dev->data_interface_altset_num_without_traffic = altset_num;
- ether_dev->data_bAlternateSetting_without_traffic = data_intf->bAlternateSetting;
- }
- }
- }
- return rc;
- }
- //////////////////////////////////////////////////////////////////////////////
- // Routine to find a communication interface /////////////////////////////////
- //////////////////////////////////////////////////////////////////////////////
- static int find_ethernet_comm_interface( struct usb_device *device, ether_dev_t *ether_dev )
- {
- struct usb_config_descriptor *conf = NULL;
- struct usb_interface *comm_intf_group = NULL;
- struct usb_interface_descriptor *comm_intf = NULL;
- int intf_num;
- int altset_num;
- int rc;
- conf = &( device->config[ether_dev->configuration_num] );
- // We need to check and see if any of these interfaces are something we want.
- // Walk through each interface one at a time
- for ( intf_num = 0; intf_num < conf->bNumInterfaces; intf_num++ ) {
- comm_intf_group = &( conf->interface[intf_num] );
- // Now for each of those interfaces, check every possible
- // alternate setting.
- for ( altset_num = 0; altset_num < comm_intf_group->num_altsetting; altset_num++ ) {
- comm_intf = &( comm_intf_group->altsetting[altset_num] );
- /* Good, we found one, we will try this one */
- /* Fill in the structure */
- ether_dev->comm_interface = intf_num;
- ether_dev->comm_bInterfaceNumber = comm_intf->bInterfaceNumber;
- ether_dev->comm_interface_altset_num = altset_num;
- ether_dev->comm_bAlternateSetting = comm_intf->bAlternateSetting;
- // Look for the Ethernet Functional Descriptors
- rc = find_and_parse_ethernet_class_information( device, ether_dev );
- if (rc) {
- // Nope this was no good after all.
- continue;
- }
- /* Check that we really can talk to the data interface
- * This includes # of endpoints, protocols, etc. */
- rc = verify_ethernet_data_interface( device, ether_dev );
- if (rc) {
- /* We got something we didn't like */
- continue;
- }
- /* It is a bit ambiguous whether the Ethernet model really requires
- * the notification element (usually an interrupt endpoint) or not
- * And some products (eg Sharp Zaurus) don't support it, so we
- * only use the notification element if present */
- /* We check for a sane endpoint before using it */
- if ( (comm_intf->bNumEndpoints == 1) &&
- (comm_intf->endpoint[0].bEndpointAddress & USB_DIR_IN) &&
- (comm_intf->endpoint[0].bmAttributes == USB_ENDPOINT_XFER_INT)) {
- ether_dev->properties |= HAVE_NOTIFICATION_ELEMENT;
- ether_dev->comm_ep_in = (comm_intf->endpoint[0].bEndpointAddress & 0x7F);
- dbg("interrupt address: %x",ether_dev->comm_ep_in);
- ether_dev->intr_interval = (comm_intf->endpoint[0].bInterval);
- dbg("interrupt interval: %d",ether_dev->intr_interval);
- }
- // This communication interface seems to give us everything
- // we require. We have all the ethernet info we need.
- return 0;
- } // end for altset_num
- } // end for intf_num
- return -1;
- }
- //////////////////////////////////////////////////////////////////////////////
- // Routine to go through all configurations and find one that ////////////////
- // is an Ethernet Networking Device //////////////////////////////////////////
- //////////////////////////////////////////////////////////////////////////////
- static int find_valid_configuration( struct usb_device *device, ether_dev_t *ether_dev )
- {
- struct usb_config_descriptor *conf = NULL;
- int conf_num;
- int rc;
- // We will try each and every possible configuration
- for ( conf_num = 0; conf_num < device->descriptor.bNumConfigurations; conf_num++ ) {
- conf = &( device->config[conf_num] );
- // Our first requirement : 2 interfaces
- if ( conf->bNumInterfaces != 2 ) {
- // I currently don't know how to handle devices with any number of interfaces
- // other than 2.
- continue;
- }
- // This one passed our first check, fill in some
- // useful data
- ether_dev->configuration_num = conf_num;
- ether_dev->bConfigurationValue = conf->bConfigurationValue;
- // Now run it through the ringers and see what comes
- // out the other side.
- rc = find_ethernet_comm_interface( device, ether_dev );
- // Check if we found an ethernet Communcation Device
- if ( !rc ) {
- // We found one.
- return 0;
- }
- }
- // None of the configurations suited us.
- return -1;
- }
- //////////////////////////////////////////////////////////////////////////////
- // Routine that checks a given configuration to see if any driver ////////////
- // has claimed any of the devices interfaces /////////////////////////////////
- //////////////////////////////////////////////////////////////////////////////
- static int check_for_claimed_interfaces( struct usb_config_descriptor *config )
- {
- struct usb_interface *comm_intf_group;
- int intf_num;
- // Go through all the interfaces and make sure none are
- // claimed by anybody else.
- for ( intf_num = 0; intf_num < config->bNumInterfaces; intf_num++ ) {
- comm_intf_group = &( config->interface[intf_num] );
- if ( usb_interface_claimed( comm_intf_group ) ) {
- // Somebody has beat us to this guy.
- // We can't change the configuration out from underneath of whoever
- // is using this device, so we will go ahead and give up.
- return -1;
- }
- }
- // We made it all the way through.
- // I guess no one has claimed any of these interfaces.
- return 0;
- }
- //////////////////////////////////////////////////////////////////////////////
- // Routines to ask for and set the kernel network interface's MAC address ////
- // Used by driver's probe routine ////////////////////////////////////////////
- //////////////////////////////////////////////////////////////////////////////
- static inline unsigned char hex2dec( unsigned char digit )
- {
- /* Is there a standard way to do this??? */
- /* I have written this code TOO MANY times. */
- if ( (digit >= '0') && (digit <= '9') ) {
- return (digit - '0');
- }
- if ( (digit >= 'a') && (digit <= 'f') ) {
- return (digit - 'a' + 10);
- }
- if ( (digit >= 'A') && (digit <= 'F') ) {
- return (digit - 'A' + 10);
- }
- return 16;
- }
- /* CDC Ethernet devices provide the MAC address as a string */
- /* We get an index to the string in the Ethernet functional header */
- /* This routine retrieves the string, sanity checks it, and sets the */
- /* MAC address in the network device */
- /* The encoding is a bit wacky - see CDC Spec Table 41 for details */
- static void set_ethernet_addr( ether_dev_t *ether_dev )
- {
- unsigned char mac_addr[6];
- int i;
- int len;
- unsigned char buffer[13];
- /* Let's assume we don't get anything */
- mac_addr[0] = 0x00;
- mac_addr[1] = 0x00;
- mac_addr[2] = 0x00;
- mac_addr[3] = 0x00;
- mac_addr[4] = 0x00;
- mac_addr[5] = 0x00;
- /* Let's ask the device */
- if (0 > (len = usb_string(ether_dev->usb, ether_dev->iMACAddress, buffer, 13))) {
- err("Attempting to get MAC address failed: %d", -1*len);
- return;
- }
- /* Sanity check */
- if (len != 12) {
- /* You gotta love failing sanity checks */
- err("Attempting to get MAC address returned %d bytes", len);
- return;
- }
- /* Fill in the mac_addr */
- for (i = 0; i < 6; i++) {
- if ((16 == buffer[2 * i]) || (16 == buffer[2 * i + 1])) {
- err("Bad value in MAC address");
- }
- else {
- mac_addr[i] = ( hex2dec( buffer[2 * i] ) << 4 ) + hex2dec( buffer[2 * i + 1] );
- }
- }
- /* Now copy it over to our network device structure */
- memcpy( ether_dev->net->dev_addr, mac_addr, sizeof(mac_addr) );
- }
- //////////////////////////////////////////////////////////////////////////////
- // Routine to print to syslog information about the driver ///////////////////
- // Used by driver's probe routine ////////////////////////////////////////////
- //////////////////////////////////////////////////////////////////////////////
- void log_device_info(ether_dev_t *ether_dev)
- {
- int len;
- int string_num;
- unsigned char manu[256];
- unsigned char prod[256];
- unsigned char sern[256];
- unsigned char *mac_addr;
- /* Default empty strings in case we don't find a real one */
- manu[0] = 0x00;
- prod[0] = 0x00;
- sern[0] = 0x00;
- /* Try to get the device Manufacturer */
- string_num = ether_dev->usb->descriptor.iManufacturer;
- if (string_num) {
- // Put it into its buffer
- len = usb_string(ether_dev->usb, string_num, manu, 255);
- // Just to be safe
- manu[len] = 0x00;
- }
- /* Try to get the device Product Name */
- string_num = ether_dev->usb->descriptor.iProduct;
- if (string_num) {
- // Put it into its buffer
- len = usb_string(ether_dev->usb, string_num, prod, 255);
- // Just to be safe
- prod[len] = 0x00;
- }
- /* Try to get the device Serial Number */
- string_num = ether_dev->usb->descriptor.iSerialNumber;
- if (string_num) {
- // Put it into its buffer
- len = usb_string(ether_dev->usb, string_num, sern, 255);
- // Just to be safe
- sern[len] = 0x00;
- }
- /* This makes it easier for us to print */
- mac_addr = ether_dev->net->dev_addr;
- /* Now send everything we found to the syslog */
- info( "%s: %s %s %s", ether_dev->net->name, manu, prod, sern);
- dbg( "%s: %02X:%02X:%02X:%02X:%02X:%02X",
- ether_dev->net->name,
- mac_addr[0],
- mac_addr[1],
- mac_addr[2],
- mac_addr[3],
- mac_addr[4],
- mac_addr[5] );
- }
- /* Forward declaration */
- static struct usb_driver CDCEther_driver ;
- //////////////////////////////////////////////////////////////////////////////
- // Module's probe routine ////////////////////////////////////////////////////
- // claims interfaces if they are for an Ethernet CDC /////////////////////////
- //////////////////////////////////////////////////////////////////////////////
- static void * CDCEther_probe( struct usb_device *usb, unsigned int ifnum,
- const struct usb_device_id *id)
- {
- struct net_device *net;
- ether_dev_t *ether_dev;
- int rc;
- // First we should check the active configuration to see if
- // any other driver has claimed any of the interfaces.
- if ( check_for_claimed_interfaces( usb->actconfig ) ) {
- // Someone has already put there grubby paws on this device.
- // We don't want it now...
- return NULL;
- }
- // We might be finding a device we can use.
- // We all go ahead and allocate our storage space.
- // We need to because we have to start filling in the data that
- // we are going to need later.
- if(!(ether_dev = kmalloc(sizeof(ether_dev_t), GFP_KERNEL))) {
- err("out of memory allocating device structure");
- return NULL;
- }
- // Zero everything out.
- memset(ether_dev, 0, sizeof(ether_dev_t));
- // Let's see if we can find a configuration we can use.
- rc = find_valid_configuration( usb, ether_dev );
- if (rc) {
- // Nope we couldn't find one we liked.
- // This device was not meant for us to control.
- kfree( ether_dev );
- return NULL;
- }
- // Now that we FOUND a configuration. let's try to make the
- // device go into it.
- if ( usb_set_configuration( usb, ether_dev->bConfigurationValue ) ) {
- err("usb_set_configuration() failed");
- kfree( ether_dev );
- return NULL;
- }
- // Now set the communication interface up as required.
- if (usb_set_interface(usb, ether_dev->comm_bInterfaceNumber, ether_dev->comm_bAlternateSetting)) {
- err("usb_set_interface() failed");
- kfree( ether_dev );
- return NULL;
- }
- // Only turn traffic on right now if we must...
- if (ether_dev->data_interface_altset_num_without_traffic >= 0) {
- // We found an alternate setting for the data
- // interface that allows us to turn off traffic.
- // We should use it.
- if (usb_set_interface( usb,
- ether_dev->data_bInterfaceNumber,
- ether_dev->data_bAlternateSetting_without_traffic)) {
- err("usb_set_interface() failed");
- kfree( ether_dev );
- return NULL;
- }
- } else {
- // We didn't find an alternate setting for the data
- // interface that would let us turn off traffic.
- // Oh well, let's go ahead and do what we must...
- if (usb_set_interface( usb,
- ether_dev->data_bInterfaceNumber,
- ether_dev->data_bAlternateSetting_with_traffic)) {
- err("usb_set_interface() failed");
- kfree( ether_dev );
- return NULL;
- }
- }
- // Now we need to get a kernel Ethernet interface.
- net = init_etherdev( NULL, 0 );
- if ( !net ) {
- // Hmm... The kernel is not sharing today...
- // Fine, we didn't want it anyway...
- err( "Unable to initialize ethernet device" );
- kfree( ether_dev );
- return NULL;
- }
- // Now that we have an ethernet device, let's set it up
- // (And I don't mean "set [it] up the bomb".)
- net->priv = ether_dev;
- SET_MODULE_OWNER(net);
- net->open = CDCEther_open;
- net->stop = CDCEther_close;
- net->watchdog_timeo = CDC_ETHER_TX_TIMEOUT;
- net->tx_timeout = CDCEther_tx_timeout; // TX timeout function
- net->do_ioctl = CDCEther_ioctl;
- net->hard_start_xmit = CDCEther_start_xmit;
- net->set_multicast_list = CDCEther_set_multicast;
- net->get_stats = CDCEther_netdev_stats;
- net->mtu = ether_dev->wMaxSegmentSize - 14;
- // We'll keep track of this information for later...
- ether_dev->usb = usb;
- ether_dev->net = net;
-
- // and don't forget the MAC address.
- set_ethernet_addr( ether_dev );
- // Send a message to syslog about what we are handling
- log_device_info( ether_dev );
- /* We need to manually claim the data interface, while the comm interface gets claimed in the return */
- usb_driver_claim_interface( &CDCEther_driver,
- &(usb->config[ether_dev->configuration_num].interface[ether_dev->data_interface]),
- ether_dev );
- // Does this REALLY do anything???
- usb_inc_dev_use( usb );
- // Okay, we are finally done...
- return ether_dev;
- }
- //////////////////////////////////////////////////////////////////////////////
- // Module's disconnect routine ///////////////////////////////////////////////
- // Called when the driver is unloaded or the device is unplugged /////////////
- // (Whichever happens first assuming the driver suceeded at its probe) ///////
- //////////////////////////////////////////////////////////////////////////////
- static void CDCEther_disconnect( struct usb_device *usb, void *ptr )
- {
- ether_dev_t *ether_dev = ptr;
- // Sanity check!!!
- if ( !ether_dev || !ether_dev->usb ) {
- // We failed. We are insane!!!
- warn("unregistering non-existant device");
- return;
- }
- // Make sure we fail the sanity check if we try this again.
- ether_dev->usb = NULL;
-
- // It is possible that this function is called before
- // the "close" function.
- // This tells the close function we are already disconnected
- ether_dev->flags |= CDC_ETHER_UNPLUG;
-
- // We don't need the network device any more
- unregister_netdev( ether_dev->net );
-
- // For sanity checks
- ether_dev->net = NULL;
- // I ask again, does this do anything???
- usb_dec_dev_use( usb );
- // We are done with this interface
- usb_driver_release_interface( &CDCEther_driver,
- &(usb->config[ether_dev->configuration_num].interface[ether_dev->comm_interface]) );
- // We are done with this interface too
- usb_driver_release_interface( &CDCEther_driver,
- &(usb->config[ether_dev->configuration_num].interface[ether_dev->data_interface]) );
- // No more tied up kernel memory
- kfree( ether_dev );
-
- // This does no good, but it looks nice!
- ether_dev = NULL;
- }
- //////////////////////////////////////////////////////////////////////////////
- // Driver info ///////////////////////////////////////////////////////////////
- //////////////////////////////////////////////////////////////////////////////
- static struct usb_driver CDCEther_driver = {
- name: "CDCEther",
- probe: CDCEther_probe,
- disconnect: CDCEther_disconnect,
- id_table: CDCEther_ids,
- };
- //////////////////////////////////////////////////////////////////////////////
- // init and exit routines called when driver is installed and uninstalled ////
- //////////////////////////////////////////////////////////////////////////////
- int __init CDCEther_init(void)
- {
- dbg( "%s", version );
- return usb_register( &CDCEther_driver );
- }
- void __exit CDCEther_exit(void)
- {
- usb_deregister( &CDCEther_driver );
- }
- //////////////////////////////////////////////////////////////////////////////
- // Module info ///////////////////////////////////////////////////////////////
- //////////////////////////////////////////////////////////////////////////////
- module_init( CDCEther_init );
- module_exit( CDCEther_exit );
- MODULE_AUTHOR("Brad Hards and another");
- MODULE_DESCRIPTION("USB CDC Ethernet driver");
- MODULE_LICENSE("GPL");
- MODULE_DEVICE_TABLE (usb, CDCEther_ids);
- MODULE_PARM (multicast_filter_limit, "i");
- MODULE_PARM_DESC (multicast_filter_limit, "CDCEther maximum number of filtered multicast addresses");
- //////////////////////////////////////////////////////////////////////////////
- // End of file ///////////////////////////////////////////////////////////////
- //////////////////////////////////////////////////////////////////////////////