diff options
Diffstat (limited to 'drivers/usb/wusbcore/cbaf.c')
| -rw-r--r-- | drivers/usb/wusbcore/cbaf.c | 620 |
1 files changed, 620 insertions, 0 deletions
diff --git a/drivers/usb/wusbcore/cbaf.c b/drivers/usb/wusbcore/cbaf.c new file mode 100644 index 000000000000..584eabe274b3 --- /dev/null +++ b/drivers/usb/wusbcore/cbaf.c @@ -0,0 +1,620 @@ +/* + * Wireless USB - Cable Based Association + * + * + * Copyright (C) 2006 Intel Corporation + * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version + * 2 as published by the Free Software Foundation. + * + * 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., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + * + * + * WUSB devices have to be paired (authenticated in WUSB lingo) so + * that they can connect to the system. + * + * One way of pairing is using CBA-Cable Based Authentication, devices + * that can connect via wired or wireless USB. First time you plug + * them with a cable, pairing is done between host and device and + * subsequent times, you can connect wirelessly without having to + * pair. That's the idea. + * + * This driver does nothing Earth shattering. It just provides an + * interface to chat with the wire-connected device so we can get a + * CDID (device ID) that might have been previously associated to a + * CHID (host ID) and to set up a new <CHID,CDID,CK> triplet + * (connection context), with the CK being the secret, or connection + * key. This is the pairing data. + * + * When a device with the CBA capability connects, the probe routine + * just creates a bunch of sysfs files that a user space enumeration + * manager uses to allow it to connect wirelessly to the system or not. + * + * The process goes like this: + * + * 1. device plugs, cbaf is loaded, notifications happen + * + * 2. the connection manager sees a device with CBAF capability (the + * wusb_{host_info,cdid,cc} files are in /sys/device/blah/OURDEVICE). + * + * 3. CM (connection manager) writes the CHID (host ID) and a host + * name into the wusb_host_info file. This gets sent to the device. + * + * 4. CM cats the wusb_cdid file; this asks the device if it has any + * CDID associated to the CHDI we just wrote before. If it does, it + * is printed, along with the device 'friendly name' and the band + * groups the device supports. + * + * 5. CM looks up its database + * + * 5.1 If it has a matching CHID,CDID entry, the device has been + * authorized before (paired). Now we can optionally ask the user + * if he wants to allow the device to connect. Then we generate a + * new CDID and CK, send it to the device and update the database + * (writing to the wusb_cc file so they are uploaded to the device). + * + * 5.2 If the CDID is zero (or we didn't find a matching CDID in our + * database), we assume the device is not known. We ask the user + * if s/he wants to allow the device to be connected wirelessly + * to the system. If nope, nothing else is done (FIXME: maybe + * send a zero CDID to clean up our CHID?). If yes, we generate + * random CDID and CKs (and write them to the wusb_cc file so + * they are uploaded to the device). + * + * 6. device is unplugged + * + * When the device tries to connect wirelessly, it will present it's + * CDID to the WUSB host controller with ID CHID, which will query the + * database. If found, the host will (with a 4way handshake) challenge + * the device to demonstrate it has the CK secret key (from our + * database) without actually exchanging it. Once satisfied, crypto + * keys are derived from the CK, the device is connected and all + * communication is crypted. + * + * + * NOTES ABOUT THE IMPLEMENTATION + * + * The descriptors sent back and forth use this horrible format from + * hell on which each field is actually a field ID, field length and + * then the field itself. How stupid can that get, taking into account + * the structures are defined by the spec?? oh well. + * + * + * FIXME: we don't provide a way to tell the device the pairing failed + * (ie: send a CC_DATA_FAIL). Should add some day. + */ +#include <linux/module.h> +#include <linux/ctype.h> +#include <linux/version.h> +#include <linux/usb.h> +#include <linux/interrupt.h> +#include <linux/delay.h> +#include <linux/random.h> +#include <linux/mutex.h> +#include <linux/uwb.h> +#include <linux/usb/wusb.h> +#include <linux/usb/association.h> + +#undef D_LOCAL +#define D_LOCAL 6 +#include <linux/uwb/debug.h> + +/* An instance of a Cable-Based-Association-Framework device */ +struct cbaf { + struct usb_device *usb_dev; + struct usb_interface *usb_iface; + void *buffer; + size_t buffer_size; + + struct wusb_ckhdid chid;/* Host Information */ + char host_name[65]; /* max length: + Assoc Models Suplement 1.0[T4-7] */ + u16 host_band_groups; + + struct wusb_ckhdid cdid;/* Device Information */ + char device_name[65]; /* max length: + Assoc Models Suplement 1.0[T4-7] */ + u16 device_band_groups; + struct wusb_ckhdid ck; /* Connection Key */ +}; + +/* + * Verify that a CBAF USB-interface has what we need + * + * (like we care, we are going to fail the enumeration if not :) + * + * FIXME: ugly function, need to split + */ +static int cbaf_check(struct cbaf *cbaf) +{ + int result; + struct device *dev = &cbaf->usb_iface->dev; + struct wusb_cbaf_assoc_info *assoc_info; + struct wusb_cbaf_assoc_request *assoc_request; + size_t assoc_size; + void *itr, *top; + unsigned ar_index; + int ar_rhi_idx = -1, ar_assoc_idx = -1; + + result = usb_control_msg( + cbaf->usb_dev, usb_rcvctrlpipe(cbaf->usb_dev, 0), + CBAF_REQ_GET_ASSOCIATION_INFORMATION, + USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, + 0, cbaf->usb_iface->cur_altsetting->desc.bInterfaceNumber, + cbaf->buffer, cbaf->buffer_size, 1000 /* FIXME: arbitrary */); + if (result < 0) { + dev_err(dev, "cannot get available association types: %d\n", + result); + goto error_get_assoc_types; + } + assoc_info = cbaf->buffer; + if (result < sizeof(*assoc_info)) { + dev_err(dev, "not enough data to decode association info " + "header (%zu vs %zu bytes required)\n", + (size_t)result, sizeof(*assoc_info)); + goto error_bad_header; + } + assoc_size = le16_to_cpu(assoc_info->Length); + if (result < assoc_size) { + dev_err(dev, "not enough data to decode association info " + "(%zu vs %zu bytes required)\n", + (size_t)assoc_size, sizeof(*assoc_info)); + goto error_bad_data; + } + /* + * From now on, we just verify, but won't error out unless we + * don't find the AR_TYPE_WUSB_{RETRIEVE_HOST_INFO,ASSOCIATE} + * types. + */ + ar_index = 0; + itr = cbaf->buffer + sizeof(*assoc_info); + top = cbaf->buffer + assoc_size; + d_printf(1, dev, "Found %u association requests (%zu bytes)\n", + assoc_info->NumAssociationRequests, assoc_size); + while (itr < top) { + u16 ar_type, ar_subtype; + u32 ar_size; + const char *ar_name; + + assoc_request = itr; + if (top - itr < sizeof(*assoc_request)) { + dev_err(dev, "not enough data to decode associaton " + "request (%zu vs %zu bytes needed)\n", + top - itr, sizeof(*assoc_request)); + break; + } + ar_type = le16_to_cpu(assoc_request->AssociationTypeId); + ar_subtype = le16_to_cpu(assoc_request->AssociationSubTypeId); + ar_size = le32_to_cpu(assoc_request->AssociationTypeInfoSize); + switch (ar_type) { + case AR_TYPE_WUSB: + /* Verify we have what is mandated by AMS1.0 */ + switch (ar_subtype) { + case AR_TYPE_WUSB_RETRIEVE_HOST_INFO: + ar_name = "retrieve_host_info"; + ar_rhi_idx = ar_index; + break; + case AR_TYPE_WUSB_ASSOCIATE: + /* send assoc data */ + ar_name = "associate"; + ar_assoc_idx = ar_index; + break; + default: + ar_name = "unknown"; + }; + break; + default: + ar_name = "unknown"; + }; + d_printf(1, dev, "association request #%02u: 0x%04x/%04x " + "(%zu bytes): %s\n", + assoc_request->AssociationDataIndex, ar_type, + ar_subtype, (size_t)ar_size, ar_name); + + itr += sizeof(*assoc_request); + ar_index++; + } + if (ar_rhi_idx == -1) { + dev_err(dev, "Missing RETRIEVE_HOST_INFO association " + "request\n"); + goto error_bad_reqs; + } + if (ar_assoc_idx == -1) { + dev_err(dev, "Missing ASSOCIATE association request\n"); + goto error_bad_reqs; + } + return 0; + +error_bad_header: +error_bad_data: +error_bad_reqs: +error_get_assoc_types: + return -EINVAL; +} + +static const struct wusb_cbaf_host_info cbaf_host_info_defaults = { + .AssociationTypeId_hdr = WUSB_AR_AssociationTypeId, + .AssociationTypeId = cpu_to_le16(AR_TYPE_WUSB), + .AssociationSubTypeId_hdr = WUSB_AR_AssociationSubTypeId, + .AssociationSubTypeId = cpu_to_le16(AR_TYPE_WUSB_RETRIEVE_HOST_INFO), + .CHID_hdr = WUSB_AR_CHID, + .LangID_hdr = WUSB_AR_LangID, + .HostFriendlyName_hdr = WUSB_AR_HostFriendlyName, +}; + +/* Send WUSB host information (CHID and name) to a CBAF device */ +static int cbaf_send_host_info(struct cbaf *cbaf) +{ + struct wusb_cbaf_host_info *hi; + size_t hi_size; + + hi = cbaf->buffer; + memset(hi, 0, sizeof(*hi)); + *hi = cbaf_host_info_defaults; + hi->CHID = cbaf->chid; + hi->LangID = 0; /* FIXME: I guess... */ + strncpy(hi->HostFriendlyName, cbaf->host_name, + hi->HostFriendlyName_hdr.len); + hi->HostFriendlyName_hdr.len = + cpu_to_le16(strlen(hi->HostFriendlyName)); + hi_size = sizeof(*hi) + strlen(hi->HostFriendlyName); + return usb_control_msg(cbaf->usb_dev, usb_sndctrlpipe(cbaf->usb_dev, 0), + CBAF_REQ_SET_ASSOCIATION_RESPONSE, + USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, + 0x0101, + cbaf->usb_iface->cur_altsetting->desc.bInterfaceNumber, + hi, hi_size, 1000 /* FIXME: arbitrary */); +} + +/* Show current CHID info we have set from user space */ +static ssize_t cbaf_wusb_host_info_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct usb_interface *iface = to_usb_interface(dev); + struct cbaf *cbaf = usb_get_intfdata(iface); + char pr_chid[WUSB_CKHDID_STRSIZE]; + + ckhdid_printf(pr_chid, sizeof(pr_chid), &cbaf->chid); + return scnprintf(buf, PAGE_SIZE, "CHID: %s\nName: %s\n", + pr_chid, cbaf->host_name); +} + +/* + * Get a host info CHID from user space and send it to the device. + * + * The user can recover a CC from the device associated to that CHID + * by cat'ing wusb_connection_context. + */ +static ssize_t cbaf_wusb_host_info_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t size) +{ + ssize_t result; + struct usb_interface *iface = to_usb_interface(dev); + struct cbaf *cbaf = usb_get_intfdata(iface); + + result = sscanf(buf, + "%02hhx %02hhx %02hhx %02hhx " + "%02hhx %02hhx %02hhx %02hhx " + "%02hhx %02hhx %02hhx %02hhx " + "%02hhx %02hhx %02hhx %02hhx " + "%04hx %64s\n", + &cbaf->chid.data[0] , &cbaf->chid.data[1], + &cbaf->chid.data[2] , &cbaf->chid.data[3], + &cbaf->chid.data[4] , &cbaf->chid.data[5], + &cbaf->chid.data[6] , &cbaf->chid.data[7], + &cbaf->chid.data[8] , &cbaf->chid.data[9], + &cbaf->chid.data[10], &cbaf->chid.data[11], + &cbaf->chid.data[12], &cbaf->chid.data[13], + &cbaf->chid.data[14], &cbaf->chid.data[15], + &cbaf->host_band_groups, cbaf->host_name); + if (result != 18) { + dev_err(dev, "Unrecognized CHID (need 16 8-bit hex digits, " + "a 16 bit hex band group mask " + "and a host name, got only %d)\n", (int)result); + return -EINVAL; + } + result = cbaf_send_host_info(cbaf); + if (result < 0) + dev_err(dev, "Couldn't send host information to device: %d\n", + (int)result); + else + d_printf(1, dev, "HI sent, wusb_cc can be read now\n"); + return result < 0 ? result : size; +} +static DEVICE_ATTR(wusb_host_info, 0600, cbaf_wusb_host_info_show, + cbaf_wusb_host_info_store); + +static const struct wusb_cbaf_device_info cbaf_device_info_defaults = { + .Length_hdr = WUSB_AR_Length, + .CDID_hdr = WUSB_AR_CDID, + .BandGroups_hdr = WUSB_AR_BandGroups, + .LangID_hdr = WUSB_AR_LangID, + .DeviceFriendlyName_hdr = WUSB_AR_DeviceFriendlyName, +}; + +/* + * Get device's information (CDID) associated to CHID + * + * The device will return it's information (CDID, name, bandgroups) + * associated to the CHID we have set before, or 0 CDID and default + * name and bandgroup if no CHID set or unknown. + */ +static int cbaf_cdid_get(struct cbaf *cbaf) +{ + int result; + struct device *dev = &cbaf->usb_iface->dev; + struct wusb_cbaf_device_info *di; + size_t needed, dev_name_size; + + di = cbaf->buffer; + result = usb_control_msg( + cbaf->usb_dev, usb_rcvctrlpipe(cbaf->usb_dev, 0), + CBAF_REQ_GET_ASSOCIATION_REQUEST, + USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, + 0x0200, cbaf->usb_iface->cur_altsetting->desc.bInterfaceNumber, + di, cbaf->buffer_size, 1000 /* FIXME: arbitrary */); + if (result < 0) { + dev_err(dev, "Cannot request device information: %d\n", result); + goto error_req_di; + } + needed = result < sizeof(*di) ? sizeof(*di) : le32_to_cpu(di->Length); + if (result < needed) { + dev_err(dev, "Not enough data in DEVICE_INFO reply (%zu vs " + "%zu bytes needed)\n", (size_t)result, needed); + goto error_bad_di; + } + cbaf->cdid = di->CDID; + dev_name_size = le16_to_cpu(di->DeviceFriendlyName_hdr.len); + dev_name_size = dev_name_size > 65 - 1 ? 65 - 1 : dev_name_size; + memcpy(cbaf->device_name, di->DeviceFriendlyName, dev_name_size); + cbaf->device_name[dev_name_size] = 0; + cbaf->device_band_groups = le16_to_cpu(di->BandGroups); + result = 0; +error_req_di: +error_bad_di: + return result; +} + +/* + * Get device information and print it to sysfs + * + * See cbaf_cdid_get() + */ +static ssize_t cbaf_wusb_cdid_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + ssize_t result; + struct usb_interface *iface = to_usb_interface(dev); + struct cbaf *cbaf = usb_get_intfdata(iface); + char pr_cdid[WUSB_CKHDID_STRSIZE]; + + result = cbaf_cdid_get(cbaf); + if (result < 0) { + dev_err(dev, "Cannot read device information: %d\n", + (int)result); + goto error_get_di; + } + ckhdid_printf(pr_cdid, sizeof(pr_cdid), &cbaf->cdid); + result = scnprintf(buf, PAGE_SIZE, + "CDID: %s\nName: %s\nBand_groups: 0x%04x\n", + pr_cdid, cbaf->device_name, + cbaf->device_band_groups); +error_get_di: + return result; +} +static DEVICE_ATTR(wusb_cdid, 0600, cbaf_wusb_cdid_show, NULL); + +static const struct wusb_cbaf_cc_data cbaf_cc_data_defaults = { + .AssociationTypeId_hdr = WUSB_AR_AssociationTypeId, + .AssociationTypeId = cpu_to_le16(AR_TYPE_WUSB), + .AssociationSubTypeId_hdr = WUSB_AR_AssociationSubTypeId, + .AssociationSubTypeId = cpu_to_le16(AR_TYPE_WUSB_ASSOCIATE), + .Length_hdr = WUSB_AR_Length, + .Length = cpu_to_le32(sizeof(struct wusb_cbaf_cc_data)), + .ConnectionContext_hdr = WUSB_AR_ConnectionContext, + .BandGroups_hdr = WUSB_AR_BandGroups, +}; + +static const struct wusb_cbaf_cc_data_fail cbaf_cc_data_fail_defaults = { + .AssociationTypeId_hdr = WUSB_AR_AssociationTypeId, + .AssociationSubTypeId_hdr = WUSB_AR_AssociationSubTypeId, + .Length_hdr = WUSB_AR_Length, + .AssociationStatus_hdr = WUSB_AR_AssociationStatus, +}; + +/* + * Send a new CC to the device + * + * So we update the CK and send the whole thing to the device + */ +static int cbaf_cc_upload(struct cbaf *cbaf) +{ + int result; + struct device *dev = &cbaf->usb_iface->dev; + struct wusb_cbaf_cc_data *ccd; + char pr_cdid[WUSB_CKHDID_STRSIZE]; + + ccd = cbaf->buffer; + *ccd = cbaf_cc_data_defaults; + ccd->CHID = cbaf->chid; + ccd->CDID = cbaf->cdid; + ccd->CK = cbaf->ck; + ccd->BandGroups = cpu_to_le16(cbaf->host_band_groups); + result = usb_control_msg( + cbaf->usb_dev, usb_sndctrlpipe(cbaf->usb_dev, 0), + CBAF_REQ_SET_ASSOCIATION_RESPONSE, + USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, + 0x0201, cbaf->usb_iface->cur_altsetting->desc.bInterfaceNumber, + ccd, sizeof(*ccd), 1000 /* FIXME: arbitrary */); + d_printf(1, dev, "Uploaded CC:\n"); + ckhdid_printf(pr_cdid, sizeof(pr_cdid), &ccd->CHID); + d_printf(1, dev, " CHID %s\n", pr_cdid); + ckhdid_printf(pr_cdid, sizeof(pr_cdid), &ccd->CDID); + d_printf(1, dev, " CDID %s\n", pr_cdid); + ckhdid_printf(pr_cdid, sizeof(pr_cdid), &ccd->CK); + d_printf(1, dev, " CK %s\n", pr_cdid); + d_printf(1, dev, " bandgroups 0x%04x\n", cbaf->host_band_groups); + return result; +} + +/* + * Send a new CC to the device + * + * We take the CDID and CK from user space, the rest from the info we + * set with host_info. + */ +static ssize_t cbaf_wusb_cc_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t size) +{ + ssize_t result; + struct usb_interface *iface = to_usb_interface(dev); + struct cbaf *cbaf = usb_get_intfdata(iface); + + result = sscanf(buf, + "CDID: %02hhx %02hhx %02hhx %02hhx " + "%02hhx %02hhx %02hhx %02hhx " + "%02hhx %02hhx %02hhx %02hhx " + "%02hhx %02hhx %02hhx %02hhx\n" + "CK: %02hhx %02hhx %02hhx %02hhx " + "%02hhx %02hhx %02hhx %02hhx " + "%02hhx %02hhx %02hhx %02hhx " + "%02hhx %02hhx %02hhx %02hhx\n", + &cbaf->cdid.data[0] , &cbaf->cdid.data[1], + &cbaf->cdid.data[2] , &cbaf->cdid.data[3], + &cbaf->cdid.data[4] , &cbaf->cdid.data[5], + &cbaf->cdid.data[6] , &cbaf->cdid.data[7], + &cbaf->cdid.data[8] , &cbaf->cdid.data[9], + &cbaf->cdid.data[10], &cbaf->cdid.data[11], + &cbaf->cdid.data[12], &cbaf->cdid.data[13], + &cbaf->cdid.data[14], &cbaf->cdid.data[15], + + &cbaf->ck.data[0] , &cbaf->ck.data[1], + &cbaf->ck.data[2] , &cbaf->ck.data[3], + &cbaf->ck.data[4] , &cbaf->ck.data[5], + &cbaf->ck.data[6] , &cbaf->ck.data[7], + &cbaf->ck.data[8] , &cbaf->ck.data[9], + &cbaf->ck.data[10], &cbaf->ck.data[11], + &cbaf->ck.data[12], &cbaf->ck.data[13], + &cbaf->ck.data[14], &cbaf->ck.data[15]); + if (result != 32) { + dev_err(dev, "Unrecognized CHID/CK (need 32 8-bit " + "hex digits, got only %d)\n", (int)result); + return -EINVAL; + } + result = cbaf_cc_upload(cbaf); + if (result < 0) + dev_err(dev, "Couldn't upload connection context: %d\n", + (int)result); + else + d_printf(1, dev, "Connection context uploaded\n"); + return result < 0 ? result : size; +} +static DEVICE_ATTR(wusb_cc, 0600, NULL, cbaf_wusb_cc_store); + +static struct attribute *cbaf_dev_attrs[] = { + &dev_attr_wusb_host_info.attr, + &dev_attr_wusb_cdid.attr, + &dev_attr_wusb_cc.attr, + NULL, +}; + +static struct attribute_group cbaf_dev_attr_group = { + .name = NULL, /* we want them in the same directory */ + .attrs = cbaf_dev_attrs, +}; + +static int cbaf_probe(struct usb_interface *iface, + const struct usb_device_id *id) +{ + int result; + struct cbaf *cbaf; + struct device *dev = &iface->dev; + + result = -ENOMEM; + cbaf = kzalloc(sizeof(*cbaf), GFP_KERNEL); + if (cbaf == NULL) { + dev_err(dev, "Unable to allocate instance\n"); + goto error_kzalloc; + } + cbaf->buffer = kmalloc(512, GFP_KERNEL); + if (cbaf->buffer == NULL) + goto error_kmalloc_buffer; + cbaf->buffer_size = 512; + cbaf->usb_dev = usb_get_dev(interface_to_usbdev(iface)); + cbaf->usb_iface = usb_get_intf(iface); + result = cbaf_check(cbaf); + if (result < 0) + goto error_check; + result = sysfs_create_group(&dev->kobj, &cbaf_dev_attr_group); + if (result < 0) { + dev_err(dev, "Can't register sysfs attr group: %d\n", result); + goto error_create_group; + } + usb_set_intfdata(iface, cbaf); + d_printf(2, dev, "CBA attached\n"); + return 0; + +error_create_group: +error_check: + kfree(cbaf->buffer); +error_kmalloc_buffer: + kfree(cbaf); +error_kzalloc: + return result; +} + +static void cbaf_disconnect(struct usb_interface *iface) +{ + struct cbaf *cbaf = usb_get_intfdata(iface); + struct device *dev = &iface->dev; + sysfs_remove_group(&dev->kobj, &cbaf_dev_attr_group); + usb_set_intfdata(iface, NULL); + usb_put_intf(iface); + kfree(cbaf->buffer); + /* paranoia: clean up crypto keys */ + memset(cbaf, 0, sizeof(*cbaf)); + kfree(cbaf); + d_printf(1, dev, "CBA detached\n"); +} + +static struct usb_device_id cbaf_id_table[] = { + { USB_INTERFACE_INFO(0xef, 0x03, 0x01), }, + { }, +}; +MODULE_DEVICE_TABLE(usb, cbaf_id_table); + +static struct usb_driver cbaf_driver = { + .name = "wusb-cbaf", + .id_table = cbaf_id_table, + .probe = cbaf_probe, + .disconnect = cbaf_disconnect, +}; + +static int __init cbaf_driver_init(void) +{ + return usb_register(&cbaf_driver); +} +module_init(cbaf_driver_init); + +static void __exit cbaf_driver_exit(void) +{ + usb_deregister(&cbaf_driver); +} +module_exit(cbaf_driver_exit); + +MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>"); +MODULE_DESCRIPTION("Wireless USB Cable Based Association"); +MODULE_LICENSE("GPL"); |