2 * Copyright (c) 1990, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from the Stanford/CMU enet packet filter,
6 * (net/enet.c) distributed as part of 4.3BSD, and code contributed
7 * to Berkeley by Steven McCanne and Van Jacobson both of Lawrence
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 #include <sys/param.h>
36 #include <sys/kernel.h>
38 #include <sys/fcntl.h>
39 #include <sys/malloc.h>
41 #include <sys/socket.h>
42 #include <sys/sockio.h>
44 #include <net/if_types.h>
46 #include <sys/sysctl.h>
47 #include <sys/condvar.h>
49 #include <bus/u4b/usb.h>
50 #include <bus/u4b/usbdi.h>
51 #include <bus/u4b/usb_busdma.h>
53 #include <bus/u4b/usb_controller.h>
54 #include <bus/u4b/usb_core.h>
55 #include <bus/u4b/usb_process.h>
56 #include <bus/u4b/usb_device.h>
57 #include <bus/u4b/usb_bus.h>
58 #include <bus/u4b/usb_pf.h>
59 #include <bus/u4b/usb_transfer.h>
60 static void usbpf_init(void *);
61 static void usbpf_uninit(void *);
62 static int usbpf_ioctl(struct ifnet *, u_long, caddr_t);
63 static int usbpf_clone_match(struct if_clone *, const char *);
64 static int usbpf_clone_create(struct if_clone *, char *, size_t, caddr_t);
65 static int usbpf_clone_destroy(struct if_clone *, struct ifnet *);
66 static struct usb_bus *usbpf_ifname2ubus(const char *);
67 static uint32_t usbpf_aggregate_xferflags(struct usb_xfer_flags *);
68 static uint32_t usbpf_aggregate_status(struct usb_xfer_flags_int *);
69 static int usbpf_xfer_frame_is_read(struct usb_xfer *, uint32_t);
70 static uint32_t usbpf_xfer_precompute_size(struct usb_xfer *, int);
72 static struct if_clone *usbpf_cloner;
73 static const char usbusname[] = "usbus";
75 SYSINIT(usbpf_init, SI_SUB_PSEUDO, SI_ORDER_MIDDLE, usbpf_init, NULL);
76 SYSUNINIT(usbpf_uninit, SI_SUB_PSEUDO, SI_ORDER_MIDDLE, usbpf_uninit, NULL);
79 usbpf_uninit(void *arg)
88 if_clone_detach(usbpf_cloner);
90 dc = devclass_find(usbusname);
93 error = devclass_get_devices(dc, &devlp, &devlcnt);
96 for (i = 0; i < devlcnt; i++) {
97 ubus = device_get_softc(devlp[i]);
98 if (ubus != NULL && ubus->ifp != NULL)
99 usbpf_clone_destroy(usbpf_cloner, ubus->ifp);
105 usbpf_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
108 /* No configuration allowed. */
112 static struct usb_bus *
113 usbpf_ifname2ubus(const char *ifname)
120 if (strncmp(ifname, usbusname, sizeof(usbusname) - 1) != 0)
122 error = ifc_name2unit(ifname, &unit);
123 if (error || unit < 0)
125 dc = devclass_find(usbusname);
128 dev = devclass_get_device(dc, unit);
132 return (device_get_softc(dev));
136 usbpf_clone_match(struct if_clone *ifc, const char *name)
138 struct usb_bus *ubus;
140 ubus = usbpf_ifname2ubus(name);
143 if (ubus->ifp != NULL)
150 usbpf_clone_create(struct if_clone *ifc, char *name, size_t len, caddr_t params)
155 struct usb_bus *ubus;
157 error = ifc_name2unit(name, &unit);
163 ubus = usbpf_ifname2ubus(name);
166 if (ubus->ifp != NULL)
169 error = ifc_alloc_unit(ifc, &unit);
171 device_printf(ubus->parent, "usbpf: Could not allocate "
175 ifp = ubus->ifp = if_alloc(IFT_USB);
177 ifc_free_unit(ifc, unit);
178 device_printf(ubus->parent, "usbpf: Could not allocate "
182 strlcpy(ifp->if_xname, name, sizeof(ifp->if_xname));
183 ifp->if_softc = ubus;
184 ifp->if_dname = usbusname;
185 ifp->if_dunit = unit;
186 ifp->if_ioctl = usbpf_ioctl;
188 ifp->if_flags |= IFF_UP;
191 * XXX According to the specification of DLT_USB, it indicates
192 * packets beginning with USB setup header. But not sure all
195 bpfattach(ifp, DLT_USB, USBPF_HDR_LEN);
201 usbpf_clone_destroy(struct if_clone *ifc, struct ifnet *ifp)
203 struct usb_bus *ubus;
206 ubus = ifp->if_softc;
207 unit = ifp->if_dunit;
213 ifc_free_unit(ifc, unit);
219 usbpf_attach(struct usb_bus *ubus)
223 device_printf(ubus->parent, "usbpf: Attached\n");
227 usbpf_detach(struct usb_bus *ubus)
230 if (ubus->ifp != NULL)
231 usbpf_clone_destroy(usbpf_cloner, ubus->ifp);
233 device_printf(ubus->parent, "usbpf: Detached\n");
237 usbpf_aggregate_xferflags(struct usb_xfer_flags *flags)
241 if (flags->force_short_xfer == 1)
242 val |= USBPF_FLAG_FORCE_SHORT_XFER;
243 if (flags->short_xfer_ok == 1)
244 val |= USBPF_FLAG_SHORT_XFER_OK;
245 if (flags->short_frames_ok == 1)
246 val |= USBPF_FLAG_SHORT_FRAMES_OK;
247 if (flags->pipe_bof == 1)
248 val |= USBPF_FLAG_PIPE_BOF;
249 if (flags->proxy_buffer == 1)
250 val |= USBPF_FLAG_PROXY_BUFFER;
251 if (flags->ext_buffer == 1)
252 val |= USBPF_FLAG_EXT_BUFFER;
253 if (flags->manual_status == 1)
254 val |= USBPF_FLAG_MANUAL_STATUS;
255 if (flags->no_pipe_ok == 1)
256 val |= USBPF_FLAG_NO_PIPE_OK;
257 if (flags->stall_pipe == 1)
258 val |= USBPF_FLAG_STALL_PIPE;
263 usbpf_aggregate_status(struct usb_xfer_flags_int *flags)
267 if (flags->open == 1)
268 val |= USBPF_STATUS_OPEN;
269 if (flags->transferring == 1)
270 val |= USBPF_STATUS_TRANSFERRING;
271 if (flags->did_dma_delay == 1)
272 val |= USBPF_STATUS_DID_DMA_DELAY;
273 if (flags->did_close == 1)
274 val |= USBPF_STATUS_DID_CLOSE;
275 if (flags->draining == 1)
276 val |= USBPF_STATUS_DRAINING;
277 if (flags->started == 1)
278 val |= USBPF_STATUS_STARTED;
279 if (flags->bandwidth_reclaimed == 1)
280 val |= USBPF_STATUS_BW_RECLAIMED;
281 if (flags->control_xfr == 1)
282 val |= USBPF_STATUS_CONTROL_XFR;
283 if (flags->control_hdr == 1)
284 val |= USBPF_STATUS_CONTROL_HDR;
285 if (flags->control_act == 1)
286 val |= USBPF_STATUS_CONTROL_ACT;
287 if (flags->control_stall == 1)
288 val |= USBPF_STATUS_CONTROL_STALL;
289 if (flags->short_frames_ok == 1)
290 val |= USBPF_STATUS_SHORT_FRAMES_OK;
291 if (flags->short_xfer_ok == 1)
292 val |= USBPF_STATUS_SHORT_XFER_OK;
294 if (flags->bdma_enable == 1)
295 val |= USBPF_STATUS_BDMA_ENABLE;
296 if (flags->bdma_no_post_sync == 1)
297 val |= USBPF_STATUS_BDMA_NO_POST_SYNC;
298 if (flags->bdma_setup == 1)
299 val |= USBPF_STATUS_BDMA_SETUP;
301 if (flags->isochronous_xfr == 1)
302 val |= USBPF_STATUS_ISOCHRONOUS_XFR;
303 if (flags->curr_dma_set == 1)
304 val |= USBPF_STATUS_CURR_DMA_SET;
305 if (flags->can_cancel_immed == 1)
306 val |= USBPF_STATUS_CAN_CANCEL_IMMED;
307 if (flags->doing_callback == 1)
308 val |= USBPF_STATUS_DOING_CALLBACK;
314 usbpf_xfer_frame_is_read(struct usb_xfer *xfer, uint32_t frame)
318 if ((frame == 0) && (xfer->flags_int.control_xfr != 0) &&
319 (xfer->flags_int.control_hdr != 0)) {
321 if (xfer->flags_int.usb_mode == USB_MODE_DEVICE) {
322 /* The device controller writes to memory */
325 /* The host controller reads from memory */
329 isread = USB_GET_DATA_ISREAD(xfer);
335 usbpf_xfer_precompute_size(struct usb_xfer *xfer, int type)
341 if (type == USBPF_XFERTAP_SUBMIT)
342 nframes = xfer->nframes;
344 nframes = xfer->aframes;
346 totlen = USBPF_HDR_LEN + (USBPF_FRAME_HDR_LEN * nframes);
348 /* precompute all trace lengths */
349 for (x = 0; x != nframes; x++) {
350 if (usbpf_xfer_frame_is_read(xfer, x)) {
351 if (type != USBPF_XFERTAP_SUBMIT) {
352 totlen += USBPF_FRAME_ALIGN(
356 if (type == USBPF_XFERTAP_SUBMIT) {
357 totlen += USBPF_FRAME_ALIGN(
366 usbpf_xfertap(struct usb_xfer *xfer, int type)
369 struct usbpf_pkthdr *up;
370 struct usbpf_framehdr *uf;
371 usb_frlength_t offset;
380 bus = xfer->xroot->bus;
383 if (bus->ifp == NULL)
385 if (!bpf_peers_present(bus->ifp->if_bpf))
388 totlen = usbpf_xfer_precompute_size(xfer, type);
390 if (type == USBPF_XFERTAP_SUBMIT)
391 nframes = xfer->nframes;
393 nframes = xfer->aframes;
398 * When BPF supports it we could pass a fragmented array of
399 * buffers avoiding the data copy operation here.
401 buf = ptr = malloc(totlen, M_TEMP, M_NOWAIT);
403 device_printf(bus->parent, "usbpf: Out of memory\n");
407 up = (struct usbpf_pkthdr *)ptr;
408 ptr += USBPF_HDR_LEN;
410 /* fill out header */
411 temp = device_get_unit(bus->bdev);
412 up->up_totlen = htole32(totlen);
413 up->up_busunit = htole32(temp);
414 up->up_address = xfer->xroot->udev->device_index;
415 if (xfer->flags_int.usb_mode == USB_MODE_DEVICE)
416 up->up_mode = USBPF_MODE_DEVICE;
418 up->up_mode = USBPF_MODE_HOST;
420 up->up_xfertype = xfer->endpoint->edesc->bmAttributes & UE_XFERTYPE;
421 temp = usbpf_aggregate_xferflags(&xfer->flags);
422 up->up_flags = htole32(temp);
423 temp = usbpf_aggregate_status(&xfer->flags_int);
424 up->up_status = htole32(temp);
426 up->up_error = htole32(temp);
427 temp = xfer->interval;
428 up->up_interval = htole32(temp);
429 up->up_frames = htole32(nframes);
430 temp = xfer->max_packet_size;
431 up->up_packet_size = htole32(temp);
432 temp = xfer->max_packet_count;
433 up->up_packet_count = htole32(temp);
434 temp = xfer->endpointno;
435 up->up_endpoint = htole32(temp);
436 up->up_speed = xfer->xroot->udev->speed;
438 /* clear reserved area */
439 memset(up->up_reserved, 0, sizeof(up->up_reserved));
441 /* init offset and frame */
445 /* iterate all the USB frames and copy data, if any */
446 for (x = 0; x != nframes; x++) {
451 length = xfer->frlengths[x];
453 /* get frame header pointer */
454 uf = (struct usbpf_framehdr *)ptr;
455 ptr += USBPF_FRAME_HDR_LEN;
457 /* fill out packet header */
458 uf->length = htole32(length);
461 /* get information about data read/write */
462 isread = usbpf_xfer_frame_is_read(xfer, x);
464 /* check if we need to copy any data */
466 if (type == USBPF_XFERTAP_SUBMIT)
469 uf->flags |= htole32(
470 USBPF_FRAMEFLAG_DATA_FOLLOWS);
473 if (type != USBPF_XFERTAP_SUBMIT)
476 uf->flags |= htole32(
477 USBPF_FRAMEFLAG_DATA_FOLLOWS);
481 /* check if data is read direction */
483 uf->flags |= htole32(USBPF_FRAMEFLAG_READ);
485 /* copy USB data, if any */
488 usbd_copy_out(&xfer->frbuffers[frame],
489 offset, ptr, length);
492 temp = USBPF_FRAME_ALIGN(length);
496 memset(ptr + length, 0, temp - length);
501 if (xfer->flags_int.isochronous_xfr) {
502 offset += usbd_xfer_old_frame_length(xfer, x);
508 bpf_tap(bus->ifp->if_bpf, buf, totlen);