6 * Copyright (c) 2001-2009 Maksim Yevmenkin <m_evmenkin@yahoo.com>
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * $Id: ng_ubt.c,v 1.16 2003/10/10 19:15:06 max Exp $
35 * NOTE: ng_ubt2 driver has a split personality. On one side it is
36 * a USB device driver and on the other it is a Netgraph node. This
37 * driver will *NOT* create traditional /dev/ enties, only Netgraph
40 * NOTE ON LOCKS USED: ng_ubt2 drives uses 2 locks (mutexes)
42 * 1) sc_if_mtx - lock for device's interface #0 and #1. This lock is used
43 * by USB for any USB request going over device's interface #0 and #1,
44 * i.e. interrupt, control, bulk and isoc. transfers.
46 * 2) sc_ng_mtx - this lock is used to protect shared (between USB, Netgraph
47 * and Taskqueue) data, such as outgoing mbuf queues, task flags and hook
48 * pointer. This lock *SHOULD NOT* be grabbed for a long time. In fact,
49 * think of it as a spin lock.
51 * NOTE ON LOCKING STRATEGY: ng_ubt2 driver operates in 3 different contexts.
53 * 1) USB context. This is where all the USB related stuff happens. All
54 * callbacks run in this context. All callbacks are called (by USB) with
55 * appropriate interface lock held. It is (generally) allowed to grab
56 * any additional locks.
58 * 2) Netgraph context. This is where all the Netgraph related stuff happens.
59 * Since we mark node as WRITER, the Netgraph node will be "locked" (from
60 * Netgraph point of view). Any variable that is only modified from the
61 * Netgraph context does not require any additonal locking. It is generally
62 * *NOT* allowed to grab *ANY* additional locks. Whatever you do, *DO NOT*
63 * grab any lock in the Netgraph context that could cause de-scheduling of
64 * the Netgraph thread for significant amount of time. In fact, the only
65 * lock that is allowed in the Netgraph context is the sc_ng_mtx lock.
66 * Also make sure that any code that is called from the Netgraph context
67 * follows the rule above.
69 * 3) Taskqueue context. This is where ubt_task runs. Since we are generally
70 * NOT allowed to grab any lock that could cause de-scheduling in the
71 * Netgraph context, and, USB requires us to grab interface lock before
72 * doing things with transfers, it is safer to transition from the Netgraph
73 * context to the Taskqueue context before we can call into USB subsystem.
75 * So, to put everything together, the rules are as follows.
76 * It is OK to call from the USB context or the Taskqueue context into
77 * the Netgraph context (i.e. call NG_SEND_xxx functions). In other words
78 * it is allowed to call into the Netgraph context with locks held.
79 * Is it *NOT* OK to call from the Netgraph context into the USB context,
80 * because USB requires us to grab interface locks, and, it is safer to
81 * avoid it. So, to make things safer we set task flags to indicate which
82 * actions we want to perform and schedule ubt_task which would run in the
84 * Is is OK to call from the Taskqueue context into the USB context,
85 * and, ubt_task does just that (i.e. grabs appropriate interface locks
86 * before calling into USB).
87 * Access to the outgoing queues, task flags and hook pointer is
88 * controlled by the sc_ng_mtx lock. It is an unavoidable evil. Again,
89 * sc_ng_mtx should really be a spin lock (and it is very likely to an
90 * equivalent of spin lock due to adaptive nature of FreeBSD mutexes).
91 * All USB callbacks accept softc pointer as a private data. USB ensures
92 * that this pointer is valid.
95 #include <sys/stdint.h>
96 #include <sys/stddef.h>
97 #include <sys/param.h>
98 #include <sys/queue.h>
99 #include <sys/types.h>
100 #include <sys/systm.h>
101 #include <sys/kernel.h>
103 #include <sys/linker_set.h>
104 #include <sys/module.h>
105 #include <sys/lock.h>
106 #include <sys/mutex.h>
107 #include <sys/condvar.h>
108 #include <sys/sysctl.h>
110 #include <sys/unistd.h>
111 #include <sys/callout.h>
112 #include <sys/malloc.h>
113 #include <sys/priv.h>
116 #include <dev/usb/usb.h>
117 #include <dev/usb/usbdi.h>
118 #include <dev/usb/usbdi_util.h>
120 #define USB_DEBUG_VAR usb_debug
121 #include <dev/usb/usb_debug.h>
122 #include <dev/usb/usb_busdma.h>
124 #include <sys/mbuf.h>
125 #include <sys/taskqueue.h>
127 #include <netgraph/ng_message.h>
128 #include <netgraph/netgraph.h>
129 #include <netgraph/ng_parse.h>
130 #include <netgraph/bluetooth/include/ng_bluetooth.h>
131 #include <netgraph/bluetooth/include/ng_hci.h>
132 #include <netgraph/bluetooth/include/ng_ubt.h>
133 #include <netgraph/bluetooth/drivers/ubt/ng_ubt_var.h>
135 static int ubt_modevent(module_t, int, void *);
136 static device_probe_t ubt_probe;
137 static device_attach_t ubt_attach;
138 static device_detach_t ubt_detach;
140 static void ubt_task_schedule(ubt_softc_p, int);
141 static task_fn_t ubt_task;
143 #define ubt_xfer_start(sc, i) usbd_transfer_start((sc)->sc_xfer[(i)])
145 /* Netgraph methods */
146 static ng_constructor_t ng_ubt_constructor;
147 static ng_shutdown_t ng_ubt_shutdown;
148 static ng_newhook_t ng_ubt_newhook;
149 static ng_connect_t ng_ubt_connect;
150 static ng_disconnect_t ng_ubt_disconnect;
151 static ng_rcvmsg_t ng_ubt_rcvmsg;
152 static ng_rcvdata_t ng_ubt_rcvdata;
155 static const struct ng_parse_struct_field ng_ubt_node_qlen_type_fields[] =
157 { "queue", &ng_parse_int32_type, },
158 { "qlen", &ng_parse_int32_type, },
161 static const struct ng_parse_type ng_ubt_node_qlen_type =
163 &ng_parse_struct_type,
164 &ng_ubt_node_qlen_type_fields
168 static const struct ng_parse_struct_field ng_ubt_node_stat_type_fields[] =
170 { "pckts_recv", &ng_parse_uint32_type, },
171 { "bytes_recv", &ng_parse_uint32_type, },
172 { "pckts_sent", &ng_parse_uint32_type, },
173 { "bytes_sent", &ng_parse_uint32_type, },
174 { "oerrors", &ng_parse_uint32_type, },
175 { "ierrors", &ng_parse_uint32_type, },
178 static const struct ng_parse_type ng_ubt_node_stat_type =
180 &ng_parse_struct_type,
181 &ng_ubt_node_stat_type_fields
184 /* Netgraph node command list */
185 static const struct ng_cmdlist ng_ubt_cmdlist[] =
189 NGM_UBT_NODE_SET_DEBUG,
191 &ng_parse_uint16_type,
196 NGM_UBT_NODE_GET_DEBUG,
199 &ng_parse_uint16_type
203 NGM_UBT_NODE_SET_QLEN,
205 &ng_ubt_node_qlen_type,
210 NGM_UBT_NODE_GET_QLEN,
212 &ng_ubt_node_qlen_type,
213 &ng_ubt_node_qlen_type
217 NGM_UBT_NODE_GET_STAT,
220 &ng_ubt_node_stat_type
224 NGM_UBT_NODE_RESET_STAT,
232 /* Netgraph node type */
233 static struct ng_type typestruct =
235 .version = NG_ABI_VERSION,
236 .name = NG_UBT_NODE_TYPE,
237 .constructor = ng_ubt_constructor,
238 .rcvmsg = ng_ubt_rcvmsg,
239 .shutdown = ng_ubt_shutdown,
240 .newhook = ng_ubt_newhook,
241 .connect = ng_ubt_connect,
242 .rcvdata = ng_ubt_rcvdata,
243 .disconnect = ng_ubt_disconnect,
244 .cmdlist = ng_ubt_cmdlist
247 /****************************************************************************
248 ****************************************************************************
250 ****************************************************************************
251 ****************************************************************************/
254 static usb_callback_t ubt_ctrl_write_callback;
255 static usb_callback_t ubt_intr_read_callback;
256 static usb_callback_t ubt_bulk_read_callback;
257 static usb_callback_t ubt_bulk_write_callback;
258 static usb_callback_t ubt_isoc_read_callback;
259 static usb_callback_t ubt_isoc_write_callback;
261 static int ubt_fwd_mbuf_up(ubt_softc_p, struct mbuf **);
262 static int ubt_isoc_read_one_frame(struct usb_xfer *, int);
267 * The following desribes usb transfers that could be submitted on USB device.
269 * Interface 0 on the USB device must present the following endpoints
270 * 1) Interrupt endpoint to receive HCI events
271 * 2) Bulk IN endpoint to receive ACL data
272 * 3) Bulk OUT endpoint to send ACL data
274 * Interface 1 on the USB device must present the following endpoints
275 * 1) Isochronous IN endpoint to receive SCO data
276 * 2) Isochronous OUT endpoint to send SCO data
279 static const struct usb_config ubt_config[UBT_N_TRANSFER] =
285 /* Outgoing bulk transfer - ACL packets */
286 [UBT_IF_0_BULK_DT_WR] = {
288 .endpoint = UE_ADDR_ANY,
289 .direction = UE_DIR_OUT,
291 .bufsize = UBT_BULK_WRITE_BUFFER_SIZE,
292 .flags = { .pipe_bof = 1, .force_short_xfer = 1, },
293 .callback = &ubt_bulk_write_callback,
295 /* Incoming bulk transfer - ACL packets */
296 [UBT_IF_0_BULK_DT_RD] = {
298 .endpoint = UE_ADDR_ANY,
299 .direction = UE_DIR_IN,
301 .bufsize = UBT_BULK_READ_BUFFER_SIZE,
302 .flags = { .pipe_bof = 1, .short_xfer_ok = 1, },
303 .callback = &ubt_bulk_read_callback,
305 /* Incoming interrupt transfer - HCI events */
306 [UBT_IF_0_INTR_DT_RD] = {
307 .type = UE_INTERRUPT,
308 .endpoint = UE_ADDR_ANY,
309 .direction = UE_DIR_IN,
311 .flags = { .pipe_bof = 1, .short_xfer_ok = 1, },
312 .bufsize = UBT_INTR_BUFFER_SIZE,
313 .callback = &ubt_intr_read_callback,
315 /* Outgoing control transfer - HCI commands */
316 [UBT_IF_0_CTRL_DT_WR] = {
318 .endpoint = 0x00, /* control pipe */
319 .direction = UE_DIR_ANY,
321 .bufsize = UBT_CTRL_BUFFER_SIZE,
322 .callback = &ubt_ctrl_write_callback,
323 .timeout = 5000, /* 5 seconds */
330 /* Incoming isochronous transfer #1 - SCO packets */
331 [UBT_IF_1_ISOC_DT_RD1] = {
332 .type = UE_ISOCHRONOUS,
333 .endpoint = UE_ADDR_ANY,
334 .direction = UE_DIR_IN,
336 .bufsize = 0, /* use "wMaxPacketSize * frames" */
337 .frames = UBT_ISOC_NFRAMES,
338 .flags = { .short_xfer_ok = 1, },
339 .callback = &ubt_isoc_read_callback,
341 /* Incoming isochronous transfer #2 - SCO packets */
342 [UBT_IF_1_ISOC_DT_RD2] = {
343 .type = UE_ISOCHRONOUS,
344 .endpoint = UE_ADDR_ANY,
345 .direction = UE_DIR_IN,
347 .bufsize = 0, /* use "wMaxPacketSize * frames" */
348 .frames = UBT_ISOC_NFRAMES,
349 .flags = { .short_xfer_ok = 1, },
350 .callback = &ubt_isoc_read_callback,
352 /* Outgoing isochronous transfer #1 - SCO packets */
353 [UBT_IF_1_ISOC_DT_WR1] = {
354 .type = UE_ISOCHRONOUS,
355 .endpoint = UE_ADDR_ANY,
356 .direction = UE_DIR_OUT,
358 .bufsize = 0, /* use "wMaxPacketSize * frames" */
359 .frames = UBT_ISOC_NFRAMES,
360 .flags = { .short_xfer_ok = 1, },
361 .callback = &ubt_isoc_write_callback,
363 /* Outgoing isochronous transfer #2 - SCO packets */
364 [UBT_IF_1_ISOC_DT_WR2] = {
365 .type = UE_ISOCHRONOUS,
366 .endpoint = UE_ADDR_ANY,
367 .direction = UE_DIR_OUT,
369 .bufsize = 0, /* use "wMaxPacketSize * frames" */
370 .frames = UBT_ISOC_NFRAMES,
371 .flags = { .short_xfer_ok = 1, },
372 .callback = &ubt_isoc_write_callback,
377 * If for some reason device should not be attached then put
378 * VendorID/ProductID pair into the list below. The format is
381 * { USB_VPI(VENDOR_ID, PRODUCT_ID, 0) },
383 * where VENDOR_ID and PRODUCT_ID are hex numbers.
386 static const struct usb_device_id ubt_ignore_devs[] =
388 /* AVM USB Bluetooth-Adapter BlueFritz! v1.0 */
389 { USB_VPI(USB_VENDOR_AVM, 0x2200, 0) },
392 /* List of supported bluetooth devices */
393 static const struct usb_device_id ubt_devs[] =
395 /* Generic Bluetooth class devices */
396 { USB_IFACE_CLASS(UDCLASS_WIRELESS),
397 USB_IFACE_SUBCLASS(UDSUBCLASS_RF),
398 USB_IFACE_PROTOCOL(UDPROTO_BLUETOOTH) },
400 /* AVM USB Bluetooth-Adapter BlueFritz! v2.0 */
401 { USB_VPI(USB_VENDOR_AVM, 0x3800, 0) },
405 * Probe for a USB Bluetooth device.
410 ubt_probe(device_t dev)
412 struct usb_attach_arg *uaa = device_get_ivars(dev);
414 if (uaa->usb_mode != USB_MODE_HOST)
417 if (uaa->info.bIfaceIndex != 0)
420 if (uaa->use_generic == 0)
423 if (usbd_lookup_id_by_uaa(ubt_ignore_devs,
424 sizeof(ubt_ignore_devs), uaa) == 0)
427 return (usbd_lookup_id_by_uaa(ubt_devs, sizeof(ubt_devs), uaa));
436 ubt_attach(device_t dev)
438 struct usb_attach_arg *uaa = device_get_ivars(dev);
439 struct ubt_softc *sc = device_get_softc(dev);
440 struct usb_endpoint_descriptor *ed;
441 struct usb_interface_descriptor *id;
442 uint16_t wMaxPacketSize;
443 uint8_t alt_index, i, j;
444 uint8_t iface_index[2] = { 0, 1 };
446 device_set_usb_desc(dev);
449 sc->sc_debug = NG_UBT_WARN_LEVEL;
452 * Create Netgraph node
455 if (ng_make_node_common(&typestruct, &sc->sc_node) != 0) {
456 UBT_ALERT(sc, "could not create Netgraph node\n");
460 /* Name Netgraph node */
461 if (ng_name_node(sc->sc_node, device_get_nameunit(dev)) != 0) {
462 UBT_ALERT(sc, "could not name Netgraph node\n");
463 NG_NODE_UNREF(sc->sc_node);
466 NG_NODE_SET_PRIVATE(sc->sc_node, sc);
467 NG_NODE_FORCE_WRITER(sc->sc_node);
470 * Initialize device softc structure
473 /* initialize locks */
474 mtx_init(&sc->sc_ng_mtx, "ubt ng", NULL, MTX_DEF);
475 mtx_init(&sc->sc_if_mtx, "ubt if", NULL, MTX_DEF | MTX_RECURSE);
477 /* initialize packet queues */
478 NG_BT_MBUFQ_INIT(&sc->sc_cmdq, UBT_DEFAULT_QLEN);
479 NG_BT_MBUFQ_INIT(&sc->sc_aclq, UBT_DEFAULT_QLEN);
480 NG_BT_MBUFQ_INIT(&sc->sc_scoq, UBT_DEFAULT_QLEN);
482 /* initialize glue task */
483 TASK_INIT(&sc->sc_task, 0, ubt_task, sc);
486 * Configure Bluetooth USB device. Discover all required USB
487 * interfaces and endpoints.
489 * USB device must present two interfaces:
490 * 1) Interface 0 that has 3 endpoints
491 * 1) Interrupt endpoint to receive HCI events
492 * 2) Bulk IN endpoint to receive ACL data
493 * 3) Bulk OUT endpoint to send ACL data
495 * 2) Interface 1 then has 2 endpoints
496 * 1) Isochronous IN endpoint to receive SCO data
497 * 2) Isochronous OUT endpoint to send SCO data
499 * Interface 1 (with isochronous endpoints) has several alternate
500 * configurations with different packet size.
504 * For interface #1 search alternate settings, and find
505 * the descriptor with the largest wMaxPacketSize
515 * Search through all the descriptors looking for the largest
518 while ((ed = (struct usb_endpoint_descriptor *)usb_desc_foreach(
519 usbd_get_config_descriptor(uaa->device),
520 (struct usb_descriptor *)ed))) {
522 if ((ed->bDescriptorType == UDESC_INTERFACE) &&
523 (ed->bLength >= sizeof(*id))) {
524 id = (struct usb_interface_descriptor *)ed;
525 i = id->bInterfaceNumber;
526 j = id->bAlternateSetting;
529 if ((ed->bDescriptorType == UDESC_ENDPOINT) &&
530 (ed->bLength >= sizeof(*ed)) &&
534 temp = UGETW(ed->wMaxPacketSize);
535 if (temp > wMaxPacketSize) {
536 wMaxPacketSize = temp;
542 /* Set alt configuration on interface #1 only if we found it */
543 if (wMaxPacketSize > 0 &&
544 usbd_set_alt_interface_index(uaa->device, 1, alt_index)) {
545 UBT_ALERT(sc, "could not set alternate setting %d " \
546 "for interface 1!\n", alt_index);
550 /* Setup transfers for both interfaces */
551 if (usbd_transfer_setup(uaa->device, iface_index, sc->sc_xfer,
552 ubt_config, UBT_N_TRANSFER, sc, &sc->sc_if_mtx)) {
553 UBT_ALERT(sc, "could not allocate transfers\n");
557 /* Claim all interfaces on the device */
558 for (i = 1; usbd_get_iface(uaa->device, i) != NULL; i ++)
559 usbd_set_parent_iface(uaa->device, i, uaa->info.bIfaceIndex);
561 return (0); /* success */
575 ubt_detach(device_t dev)
577 struct ubt_softc *sc = device_get_softc(dev);
578 node_p node = sc->sc_node;
580 /* Destroy Netgraph node */
583 NG_NODE_REALLY_DIE(node);
584 ng_rmnode_self(node);
587 /* Make sure ubt_task in gone */
588 taskqueue_drain(taskqueue_swi, &sc->sc_task);
590 /* Free USB transfers, if any */
591 usbd_transfer_unsetup(sc->sc_xfer, UBT_N_TRANSFER);
595 NG_BT_MBUFQ_DESTROY(&sc->sc_cmdq);
596 NG_BT_MBUFQ_DESTROY(&sc->sc_aclq);
597 NG_BT_MBUFQ_DESTROY(&sc->sc_scoq);
600 mtx_destroy(&sc->sc_if_mtx);
601 mtx_destroy(&sc->sc_ng_mtx);
607 * Called when outgoing control request (HCI command) has completed, i.e.
608 * HCI command was sent to the device.
613 ubt_ctrl_write_callback(struct usb_xfer *xfer, usb_error_t error)
615 struct ubt_softc *sc = usbd_xfer_softc(xfer);
616 struct usb_device_request req;
618 struct usb_page_cache *pc;
621 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
623 switch (USB_GET_STATE(xfer)) {
624 case USB_ST_TRANSFERRED:
625 UBT_INFO(sc, "sent %d bytes to control pipe\n", actlen);
626 UBT_STAT_BYTES_SENT(sc, actlen);
627 UBT_STAT_PCKTS_SENT(sc);
632 /* Get next command mbuf, if any */
634 NG_BT_MBUFQ_DEQUEUE(&sc->sc_cmdq, m);
638 UBT_INFO(sc, "HCI command queue is empty\n");
639 break; /* transfer complete */
642 /* Initialize a USB control request and then schedule it */
643 bzero(&req, sizeof(req));
644 req.bmRequestType = UBT_HCI_REQUEST;
645 USETW(req.wLength, m->m_pkthdr.len);
647 UBT_INFO(sc, "Sending control request, " \
648 "bmRequestType=0x%02x, wLength=%d\n",
649 req.bmRequestType, UGETW(req.wLength));
651 pc = usbd_xfer_get_frame(xfer, 0);
652 usbd_copy_in(pc, 0, &req, sizeof(req));
653 pc = usbd_xfer_get_frame(xfer, 1);
654 usbd_m_copy_in(pc, 0, m, 0, m->m_pkthdr.len);
656 usbd_xfer_set_frame_len(xfer, 0, sizeof(req));
657 usbd_xfer_set_frame_len(xfer, 1, m->m_pkthdr.len);
658 usbd_xfer_set_frames(xfer, 2);
662 usbd_transfer_submit(xfer);
666 if (error != USB_ERR_CANCELLED) {
667 UBT_WARN(sc, "control transfer failed: %s\n",
674 /* transfer cancelled */
677 } /* ubt_ctrl_write_callback */
680 * Called when incoming interrupt transfer (HCI event) has completed, i.e.
681 * HCI event was received from the device.
686 ubt_intr_read_callback(struct usb_xfer *xfer, usb_error_t error)
688 struct ubt_softc *sc = usbd_xfer_softc(xfer);
690 ng_hci_event_pkt_t *hdr;
691 struct usb_page_cache *pc;
694 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
698 switch (USB_GET_STATE(xfer)) {
699 case USB_ST_TRANSFERRED:
700 /* Allocate a new mbuf */
701 MGETHDR(m, M_DONTWAIT, MT_DATA);
707 MCLGET(m, M_DONTWAIT);
708 if (!(m->m_flags & M_EXT)) {
713 /* Add HCI packet type */
714 *mtod(m, uint8_t *)= NG_HCI_EVENT_PKT;
715 m->m_pkthdr.len = m->m_len = 1;
717 if (actlen > MCLBYTES - 1)
718 actlen = MCLBYTES - 1;
720 pc = usbd_xfer_get_frame(xfer, 0);
721 usbd_copy_out(pc, 0, mtod(m, uint8_t *) + 1, actlen);
722 m->m_pkthdr.len += actlen;
725 UBT_INFO(sc, "got %d bytes from interrupt pipe\n",
728 /* Validate packet and send it up the stack */
729 if (m->m_pkthdr.len < sizeof(*hdr)) {
730 UBT_INFO(sc, "HCI event packet is too short\n");
736 hdr = mtod(m, ng_hci_event_pkt_t *);
737 if (hdr->length != (m->m_pkthdr.len - sizeof(*hdr))) {
738 UBT_ERR(sc, "Invalid HCI event packet size, " \
739 "length=%d, pktlen=%d\n",
740 hdr->length, m->m_pkthdr.len);
746 UBT_INFO(sc, "got complete HCI event frame, pktlen=%d, " \
747 "length=%d\n", m->m_pkthdr.len, hdr->length);
749 UBT_STAT_PCKTS_RECV(sc);
750 UBT_STAT_BYTES_RECV(sc, m->m_pkthdr.len);
752 ubt_fwd_mbuf_up(sc, &m);
753 /* m == NULL at this point */
758 NG_FREE_M(m); /* checks for m != NULL */
760 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
761 usbd_transfer_submit(xfer);
765 if (error != USB_ERR_CANCELLED) {
766 UBT_WARN(sc, "interrupt transfer failed: %s\n",
769 /* Try to clear stall first */
770 usbd_xfer_set_stall(xfer);
773 /* transfer cancelled */
776 } /* ubt_intr_read_callback */
779 * Called when incoming bulk transfer (ACL packet) has completed, i.e.
780 * ACL packet was received from the device.
785 ubt_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
787 struct ubt_softc *sc = usbd_xfer_softc(xfer);
789 ng_hci_acldata_pkt_t *hdr;
790 struct usb_page_cache *pc;
794 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
798 switch (USB_GET_STATE(xfer)) {
799 case USB_ST_TRANSFERRED:
800 /* Allocate new mbuf */
801 MGETHDR(m, M_DONTWAIT, MT_DATA);
807 MCLGET(m, M_DONTWAIT);
808 if (!(m->m_flags & M_EXT)) {
813 /* Add HCI packet type */
814 *mtod(m, uint8_t *)= NG_HCI_ACL_DATA_PKT;
815 m->m_pkthdr.len = m->m_len = 1;
817 if (actlen > MCLBYTES - 1)
818 actlen = MCLBYTES - 1;
820 pc = usbd_xfer_get_frame(xfer, 0);
821 usbd_copy_out(pc, 0, mtod(m, uint8_t *) + 1, actlen);
822 m->m_pkthdr.len += actlen;
825 UBT_INFO(sc, "got %d bytes from bulk-in pipe\n",
828 /* Validate packet and send it up the stack */
829 if (m->m_pkthdr.len < sizeof(*hdr)) {
830 UBT_INFO(sc, "HCI ACL packet is too short\n");
836 hdr = mtod(m, ng_hci_acldata_pkt_t *);
837 len = le16toh(hdr->length);
838 if (len != (m->m_pkthdr.len - sizeof(*hdr))) {
839 UBT_ERR(sc, "Invalid ACL packet size, length=%d, " \
840 "pktlen=%d\n", len, m->m_pkthdr.len);
846 UBT_INFO(sc, "got complete ACL data packet, pktlen=%d, " \
847 "length=%d\n", m->m_pkthdr.len, len);
849 UBT_STAT_PCKTS_RECV(sc);
850 UBT_STAT_BYTES_RECV(sc, m->m_pkthdr.len);
852 ubt_fwd_mbuf_up(sc, &m);
853 /* m == NULL at this point */
858 NG_FREE_M(m); /* checks for m != NULL */
860 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
861 usbd_transfer_submit(xfer);
865 if (error != USB_ERR_CANCELLED) {
866 UBT_WARN(sc, "bulk-in transfer failed: %s\n",
869 /* Try to clear stall first */
870 usbd_xfer_set_stall(xfer);
873 /* transfer cancelled */
876 } /* ubt_bulk_read_callback */
879 * Called when outgoing bulk transfer (ACL packet) has completed, i.e.
880 * ACL packet was sent to the device.
885 ubt_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
887 struct ubt_softc *sc = usbd_xfer_softc(xfer);
889 struct usb_page_cache *pc;
892 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
894 switch (USB_GET_STATE(xfer)) {
895 case USB_ST_TRANSFERRED:
896 UBT_INFO(sc, "sent %d bytes to bulk-out pipe\n", actlen);
897 UBT_STAT_BYTES_SENT(sc, actlen);
898 UBT_STAT_PCKTS_SENT(sc);
903 /* Get next mbuf, if any */
905 NG_BT_MBUFQ_DEQUEUE(&sc->sc_aclq, m);
909 UBT_INFO(sc, "ACL data queue is empty\n");
910 break; /* transfer completed */
914 * Copy ACL data frame back to a linear USB transfer buffer
915 * and schedule transfer
918 pc = usbd_xfer_get_frame(xfer, 0);
919 usbd_m_copy_in(pc, 0, m, 0, m->m_pkthdr.len);
920 usbd_xfer_set_frame_len(xfer, 0, m->m_pkthdr.len);
922 UBT_INFO(sc, "bulk-out transfer has been started, len=%d\n",
927 usbd_transfer_submit(xfer);
931 if (error != USB_ERR_CANCELLED) {
932 UBT_WARN(sc, "bulk-out transfer failed: %s\n",
937 /* try to clear stall first */
938 usbd_xfer_set_stall(xfer);
941 /* transfer cancelled */
944 } /* ubt_bulk_write_callback */
947 * Called when incoming isoc transfer (SCO packet) has completed, i.e.
948 * SCO packet was received from the device.
953 ubt_isoc_read_callback(struct usb_xfer *xfer, usb_error_t error)
955 struct ubt_softc *sc = usbd_xfer_softc(xfer);
959 usbd_xfer_status(xfer, &actlen, NULL, NULL, &nframes);
961 switch (USB_GET_STATE(xfer)) {
962 case USB_ST_TRANSFERRED:
963 for (n = 0; n < nframes; n ++)
964 if (ubt_isoc_read_one_frame(xfer, n) < 0)
970 for (n = 0; n < nframes; n ++)
971 usbd_xfer_set_frame_len(xfer, n,
972 usbd_xfer_max_framelen(xfer));
974 usbd_transfer_submit(xfer);
978 if (error != USB_ERR_CANCELLED) {
983 /* transfer cancelled */
986 } /* ubt_isoc_read_callback */
989 * Helper function. Called from ubt_isoc_read_callback() to read
990 * SCO data from one frame.
995 ubt_isoc_read_one_frame(struct usb_xfer *xfer, int frame_no)
997 struct ubt_softc *sc = usbd_xfer_softc(xfer);
998 struct usb_page_cache *pc;
1000 int len, want, got, total;
1002 /* Get existing SCO reassembly buffer */
1003 pc = usbd_xfer_get_frame(xfer, 0);
1004 m = sc->sc_isoc_in_buffer;
1005 total = usbd_xfer_frame_len(xfer, frame_no);
1007 /* While we have data in the frame */
1010 /* Start new reassembly buffer */
1011 MGETHDR(m, M_DONTWAIT, MT_DATA);
1013 UBT_STAT_IERROR(sc);
1014 return (-1); /* XXX out of sync! */
1017 MCLGET(m, M_DONTWAIT);
1018 if (!(m->m_flags & M_EXT)) {
1019 UBT_STAT_IERROR(sc);
1021 return (-1); /* XXX out of sync! */
1024 /* Expect SCO header */
1025 *mtod(m, uint8_t *) = NG_HCI_SCO_DATA_PKT;
1026 m->m_pkthdr.len = m->m_len = got = 1;
1027 want = sizeof(ng_hci_scodata_pkt_t);
1030 * Check if we have SCO header and if so
1031 * adjust amount of data we want
1033 got = m->m_pkthdr.len;
1034 want = sizeof(ng_hci_scodata_pkt_t);
1037 want += mtod(m, ng_hci_scodata_pkt_t *)->length;
1040 /* Append frame data to the SCO reassembly buffer */
1042 if (got + len > want)
1045 usbd_copy_out(pc, frame_no * usbd_xfer_max_framelen(xfer),
1046 mtod(m, uint8_t *) + m->m_pkthdr.len, len);
1048 m->m_pkthdr.len += len;
1052 /* Check if we got everything we wanted, if not - continue */
1056 /* If we got here then we got complete SCO frame */
1057 UBT_INFO(sc, "got complete SCO data frame, pktlen=%d, " \
1058 "length=%d\n", m->m_pkthdr.len,
1059 mtod(m, ng_hci_scodata_pkt_t *)->length);
1061 UBT_STAT_PCKTS_RECV(sc);
1062 UBT_STAT_BYTES_RECV(sc, m->m_pkthdr.len);
1064 ubt_fwd_mbuf_up(sc, &m);
1065 /* m == NULL at this point */
1068 /* Put SCO reassembly buffer back */
1069 sc->sc_isoc_in_buffer = m;
1072 } /* ubt_isoc_read_one_frame */
1075 * Called when outgoing isoc transfer (SCO packet) has completed, i.e.
1076 * SCO packet was sent to the device.
1081 ubt_isoc_write_callback(struct usb_xfer *xfer, usb_error_t error)
1083 struct ubt_softc *sc = usbd_xfer_softc(xfer);
1084 struct usb_page_cache *pc;
1086 int n, space, offset;
1087 int actlen, nframes;
1089 usbd_xfer_status(xfer, &actlen, NULL, NULL, &nframes);
1090 pc = usbd_xfer_get_frame(xfer, 0);
1092 switch (USB_GET_STATE(xfer)) {
1093 case USB_ST_TRANSFERRED:
1094 UBT_INFO(sc, "sent %d bytes to isoc-out pipe\n", actlen);
1095 UBT_STAT_BYTES_SENT(sc, actlen);
1096 UBT_STAT_PCKTS_SENT(sc);
1102 space = usbd_xfer_max_framelen(xfer) * nframes;
1108 NG_BT_MBUFQ_DEQUEUE(&sc->sc_scoq, m);
1115 n = min(space, m->m_pkthdr.len);
1117 usbd_m_copy_in(pc, offset, m,0, n);
1124 if (m->m_pkthdr.len == 0)
1125 NG_FREE_M(m); /* sets m = NULL */
1128 /* Put whatever is left from mbuf back on queue */
1131 NG_BT_MBUFQ_PREPEND(&sc->sc_scoq, m);
1136 * Calculate sizes for isoc frames.
1137 * Note that offset could be 0 at this point (i.e. we have
1138 * nothing to send). That is fine, as we have isoc. transfers
1139 * going in both directions all the time. In this case it
1140 * would be just empty isoc. transfer.
1143 for (n = 0; n < nframes; n ++) {
1144 usbd_xfer_set_frame_len(xfer, n,
1145 min(offset, usbd_xfer_max_framelen(xfer)));
1146 offset -= usbd_xfer_frame_len(xfer, n);
1149 usbd_transfer_submit(xfer);
1152 default: /* Error */
1153 if (error != USB_ERR_CANCELLED) {
1154 UBT_STAT_OERROR(sc);
1158 /* transfer cancelled */
1164 * Utility function to forward provided mbuf upstream (i.e. up the stack).
1165 * Modifies value of the mbuf pointer (sets it to NULL).
1166 * Save to call from any context.
1170 ubt_fwd_mbuf_up(ubt_softc_p sc, struct mbuf **m)
1176 * Close the race with Netgraph hook newhook/disconnect methods.
1177 * Save the hook pointer atomically. Two cases are possible:
1179 * 1) The hook pointer is NULL. It means disconnect method got
1180 * there first. In this case we are done.
1182 * 2) The hook pointer is not NULL. It means that hook pointer
1183 * could be either in valid or invalid (i.e. in the process
1184 * of disconnect) state. In any case grab an extra reference
1185 * to protect the hook pointer.
1187 * It is ok to pass hook in invalid state to NG_SEND_DATA_ONLY() as
1188 * it checks for it. Drop extra reference after NG_SEND_DATA_ONLY().
1192 if ((hook = sc->sc_hook) != NULL)
1201 NG_SEND_DATA_ONLY(error, hook, *m);
1202 NG_HOOK_UNREF(hook);
1205 UBT_STAT_IERROR(sc);
1208 } /* ubt_fwd_mbuf_up */
1210 /****************************************************************************
1211 ****************************************************************************
1213 ****************************************************************************
1214 ****************************************************************************/
1217 * Schedule glue task. Should be called with sc_ng_mtx held.
1222 ubt_task_schedule(ubt_softc_p sc, int action)
1224 mtx_assert(&sc->sc_ng_mtx, MA_OWNED);
1227 * Try to handle corner case when "start all" and "stop all"
1228 * actions can both be set before task is executed.
1232 * sc_task_flags action new sc_task_flags
1233 * ------------------------------------------------------
1238 * stop start stop|start
1240 * stop|start start stop|start
1241 * stop|start stop stop
1245 if ((action & UBT_FLAG_T_STOP_ALL) != 0)
1246 sc->sc_task_flags &= ~UBT_FLAG_T_START_ALL;
1248 sc->sc_task_flags |= action;
1251 if (sc->sc_task_flags & UBT_FLAG_T_PENDING)
1254 if (taskqueue_enqueue(taskqueue_swi, &sc->sc_task) == 0) {
1255 sc->sc_task_flags |= UBT_FLAG_T_PENDING;
1259 /* XXX: i think this should never happen */
1260 } /* ubt_task_schedule */
1263 * Glue task. Examines sc_task_flags and does things depending on it.
1264 * Taskqueue context.
1268 ubt_task(void *context, int pending)
1270 ubt_softc_p sc = context;
1274 task_flags = sc->sc_task_flags;
1275 sc->sc_task_flags = 0;
1279 * Stop all USB transfers synchronously.
1280 * Stop interface #0 and #1 transfers at the same time and in the
1281 * same loop. usbd_transfer_drain() will do appropriate locking.
1284 if (task_flags & UBT_FLAG_T_STOP_ALL)
1285 for (i = 0; i < UBT_N_TRANSFER; i ++)
1286 usbd_transfer_drain(sc->sc_xfer[i]);
1288 /* Start incoming interrupt and bulk, and all isoc. USB transfers */
1289 if (task_flags & UBT_FLAG_T_START_ALL) {
1294 mtx_lock(&sc->sc_if_mtx);
1296 ubt_xfer_start(sc, UBT_IF_0_INTR_DT_RD);
1297 ubt_xfer_start(sc, UBT_IF_0_BULK_DT_RD);
1301 * Start both read and write isoc. transfers by default.
1302 * Get them going all the time even if we have nothing
1303 * to send to avoid any delays.
1306 ubt_xfer_start(sc, UBT_IF_1_ISOC_DT_RD1);
1307 ubt_xfer_start(sc, UBT_IF_1_ISOC_DT_RD2);
1308 ubt_xfer_start(sc, UBT_IF_1_ISOC_DT_WR1);
1309 ubt_xfer_start(sc, UBT_IF_1_ISOC_DT_WR2);
1311 mtx_unlock(&sc->sc_if_mtx);
1314 /* Start outgoing control transfer */
1315 if (task_flags & UBT_FLAG_T_START_CTRL) {
1316 mtx_lock(&sc->sc_if_mtx);
1317 ubt_xfer_start(sc, UBT_IF_0_CTRL_DT_WR);
1318 mtx_unlock(&sc->sc_if_mtx);
1321 /* Start outgoing bulk transfer */
1322 if (task_flags & UBT_FLAG_T_START_BULK) {
1323 mtx_lock(&sc->sc_if_mtx);
1324 ubt_xfer_start(sc, UBT_IF_0_BULK_DT_WR);
1325 mtx_unlock(&sc->sc_if_mtx);
1329 /****************************************************************************
1330 ****************************************************************************
1331 ** Netgraph specific
1332 ****************************************************************************
1333 ****************************************************************************/
1336 * Netgraph node constructor. Do not allow to create node of this type.
1341 ng_ubt_constructor(node_p node)
1344 } /* ng_ubt_constructor */
1347 * Netgraph node destructor. Destroy node only when device has been detached.
1352 ng_ubt_shutdown(node_p node)
1354 if (node->nd_flags & NGF_REALLY_DIE) {
1356 * We came here because the USB device is being
1357 * detached, so stop being persistant.
1359 NG_NODE_SET_PRIVATE(node, NULL);
1360 NG_NODE_UNREF(node);
1362 NG_NODE_REVIVE(node); /* tell ng_rmnode we are persisant */
1365 } /* ng_ubt_shutdown */
1368 * Create new hook. There can only be one.
1373 ng_ubt_newhook(node_p node, hook_p hook, char const *name)
1375 struct ubt_softc *sc = NG_NODE_PRIVATE(node);
1377 if (strcmp(name, NG_UBT_HOOK) != 0)
1381 if (sc->sc_hook != NULL) {
1391 } /* ng_ubt_newhook */
1394 * Connect hook. Start incoming USB transfers.
1399 ng_ubt_connect(hook_p hook)
1401 struct ubt_softc *sc = NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
1403 NG_HOOK_FORCE_QUEUE(NG_HOOK_PEER(hook));
1406 ubt_task_schedule(sc, UBT_FLAG_T_START_ALL);
1410 } /* ng_ubt_connect */
1418 ng_ubt_disconnect(hook_p hook)
1420 struct ubt_softc *sc = NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
1424 if (hook != sc->sc_hook) {
1432 /* Kick off task to stop all USB xfers */
1433 ubt_task_schedule(sc, UBT_FLAG_T_STOP_ALL);
1436 NG_BT_MBUFQ_DRAIN(&sc->sc_cmdq);
1437 NG_BT_MBUFQ_DRAIN(&sc->sc_aclq);
1438 NG_BT_MBUFQ_DRAIN(&sc->sc_scoq);
1443 } /* ng_ubt_disconnect */
1446 * Process control message.
1451 ng_ubt_rcvmsg(node_p node, item_p item, hook_p lasthook)
1453 struct ubt_softc *sc = NG_NODE_PRIVATE(node);
1454 struct ng_mesg *msg, *rsp = NULL;
1455 struct ng_bt_mbufq *q;
1456 int error = 0, queue, qlen;
1458 NGI_GET_MSG(item, msg);
1460 switch (msg->header.typecookie) {
1461 case NGM_GENERIC_COOKIE:
1462 switch (msg->header.cmd) {
1463 case NGM_TEXT_STATUS:
1464 NG_MKRESPONSE(rsp, msg, NG_TEXTRESPONSE, M_NOWAIT);
1470 snprintf(rsp->data, NG_TEXTRESPONSE,
1472 "Task flags: %#x\n" \
1474 "CMD queue: [have:%d,max:%d]\n" \
1475 "ACL queue: [have:%d,max:%d]\n" \
1476 "SCO queue: [have:%d,max:%d]",
1477 (sc->sc_hook != NULL) ? NG_UBT_HOOK : "",
1485 sc->sc_scoq.maxlen);
1494 case NGM_UBT_COOKIE:
1495 switch (msg->header.cmd) {
1496 case NGM_UBT_NODE_SET_DEBUG:
1497 if (msg->header.arglen != sizeof(ng_ubt_node_debug_ep)){
1502 sc->sc_debug = *((ng_ubt_node_debug_ep *) (msg->data));
1505 case NGM_UBT_NODE_GET_DEBUG:
1506 NG_MKRESPONSE(rsp, msg, sizeof(ng_ubt_node_debug_ep),
1513 *((ng_ubt_node_debug_ep *) (rsp->data)) = sc->sc_debug;
1516 case NGM_UBT_NODE_SET_QLEN:
1517 if (msg->header.arglen != sizeof(ng_ubt_node_qlen_ep)) {
1522 queue = ((ng_ubt_node_qlen_ep *) (msg->data))->queue;
1523 qlen = ((ng_ubt_node_qlen_ep *) (msg->data))->qlen;
1526 case NGM_UBT_NODE_QUEUE_CMD:
1530 case NGM_UBT_NODE_QUEUE_ACL:
1534 case NGM_UBT_NODE_QUEUE_SCO:
1547 case NGM_UBT_NODE_GET_QLEN:
1548 if (msg->header.arglen != sizeof(ng_ubt_node_qlen_ep)) {
1553 queue = ((ng_ubt_node_qlen_ep *) (msg->data))->queue;
1556 case NGM_UBT_NODE_QUEUE_CMD:
1560 case NGM_UBT_NODE_QUEUE_ACL:
1564 case NGM_UBT_NODE_QUEUE_SCO:
1574 NG_MKRESPONSE(rsp, msg, sizeof(ng_ubt_node_qlen_ep),
1581 ((ng_ubt_node_qlen_ep *) (rsp->data))->queue = queue;
1582 ((ng_ubt_node_qlen_ep *) (rsp->data))->qlen = q->maxlen;
1585 case NGM_UBT_NODE_GET_STAT:
1586 NG_MKRESPONSE(rsp, msg, sizeof(ng_ubt_node_stat_ep),
1593 bcopy(&sc->sc_stat, rsp->data,
1594 sizeof(ng_ubt_node_stat_ep));
1597 case NGM_UBT_NODE_RESET_STAT:
1612 NG_RESPOND_MSG(error, node, item, rsp);
1616 } /* ng_ubt_rcvmsg */
1624 ng_ubt_rcvdata(hook_p hook, item_p item)
1626 struct ubt_softc *sc = NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
1628 struct ng_bt_mbufq *q;
1629 int action, error = 0;
1631 if (hook != sc->sc_hook) {
1636 /* Deatch mbuf and get HCI frame type */
1640 * Minimal size of the HCI frame is 4 bytes: 1 byte frame type,
1641 * 2 bytes connection handle and at least 1 byte of length.
1642 * Panic on data frame that has size smaller than 4 bytes (it
1643 * should not happen)
1646 if (m->m_pkthdr.len < 4)
1647 panic("HCI frame size is too small! pktlen=%d\n",
1650 /* Process HCI frame */
1651 switch (*mtod(m, uint8_t *)) { /* XXX call m_pullup ? */
1652 case NG_HCI_CMD_PKT:
1653 if (m->m_pkthdr.len - 1 > UBT_CTRL_BUFFER_SIZE)
1654 panic("HCI command frame size is too big! " \
1655 "buffer size=%zd, packet len=%d\n",
1656 UBT_CTRL_BUFFER_SIZE, m->m_pkthdr.len);
1659 action = UBT_FLAG_T_START_CTRL;
1662 case NG_HCI_ACL_DATA_PKT:
1663 if (m->m_pkthdr.len - 1 > UBT_BULK_WRITE_BUFFER_SIZE)
1664 panic("ACL data frame size is too big! " \
1665 "buffer size=%d, packet len=%d\n",
1666 UBT_BULK_WRITE_BUFFER_SIZE, m->m_pkthdr.len);
1669 action = UBT_FLAG_T_START_BULK;
1672 case NG_HCI_SCO_DATA_PKT:
1678 UBT_ERR(sc, "Dropping unsupported HCI frame, type=0x%02x, " \
1679 "pktlen=%d\n", *mtod(m, uint8_t *), m->m_pkthdr.len);
1688 if (NG_BT_MBUFQ_FULL(q)) {
1689 NG_BT_MBUFQ_DROP(q);
1692 UBT_ERR(sc, "Dropping HCI frame 0x%02x, len=%d. Queue full\n",
1693 *mtod(m, uint8_t *), m->m_pkthdr.len);
1697 /* Loose HCI packet type, enqueue mbuf and kick off task */
1698 m_adj(m, sizeof(uint8_t));
1699 NG_BT_MBUFQ_ENQUEUE(q, m);
1700 ubt_task_schedule(sc, action);
1707 } /* ng_ubt_rcvdata */
1709 /****************************************************************************
1710 ****************************************************************************
1712 ****************************************************************************
1713 ****************************************************************************/
1716 * Load/Unload the driver module
1720 ubt_modevent(module_t mod, int event, void *data)
1726 error = ng_newtype(&typestruct);
1728 printf("%s: Could not register Netgraph node type, " \
1729 "error=%d\n", NG_UBT_NODE_TYPE, error);
1733 error = ng_rmtype(&typestruct);
1742 } /* ubt_modevent */
1744 static devclass_t ubt_devclass;
1746 static device_method_t ubt_methods[] =
1748 DEVMETHOD(device_probe, ubt_probe),
1749 DEVMETHOD(device_attach, ubt_attach),
1750 DEVMETHOD(device_detach, ubt_detach),
1754 static driver_t ubt_driver =
1757 .methods = ubt_methods,
1758 .size = sizeof(struct ubt_softc),
1761 DRIVER_MODULE(ng_ubt, uhub, ubt_driver, ubt_devclass, ubt_modevent, 0);
1762 MODULE_VERSION(ng_ubt, NG_BLUETOOTH_VERSION);
1763 MODULE_DEPEND(ng_ubt, netgraph, NG_ABI_VERSION, NG_ABI_VERSION, NG_ABI_VERSION);
1764 MODULE_DEPEND(ng_ubt, ng_hci, NG_BLUETOOTH_VERSION, NG_BLUETOOTH_VERSION, NG_BLUETOOTH_VERSION);
1765 MODULE_DEPEND(ng_ubt, usb, 1, 1, 1);