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/*-
* Copyright (c) 1990, 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from the Stanford/CMU enet packet filter,
* (net/enet.c) distributed as part of 4.3BSD, and code contributed
* to Berkeley by Steven McCanne and Van Jacobson both of Lawrence
* Berkeley Laboratory.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/fcntl.h>
#include <sys/malloc.h>
#include <sys/proc.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <net/if.h>
#include <net/if_types.h>
#include <net/bpf.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usb_busdma.h>
#include <dev/usb/usb_controller.h>
#include <dev/usb/usb_core.h>
#include <dev/usb/usb_process.h>
#include <dev/usb/usb_device.h>
#include <dev/usb/usb_bus.h>
#include <dev/usb/usb_pf.h>
#include <dev/usb/usb_transfer.h>
void
usbpf_attach(struct usb_bus *ubus)
{
struct ifnet *ifp;
ifp = ubus->ifp = if_alloc(IFT_USB);
if_initname(ifp, "usbus", device_get_unit(ubus->bdev));
ifp->if_flags = IFF_CANTCONFIG;
if_attach(ifp);
if_up(ifp);
KASSERT(sizeof(struct usbpf_pkthdr) == USBPF_HDR_LEN,
("wrong USB pf header length (%zd)", sizeof(struct usbpf_pkthdr)));
/*
* XXX According to the specification of DLT_USB, it indicates packets
* beginning with USB setup header. But not sure all packets would be.
*/
bpfattach(ifp, DLT_USB, USBPF_HDR_LEN);
if (bootverbose)
device_printf(ubus->parent, "usbpf attached\n");
}
void
usbpf_detach(struct usb_bus *ubus)
{
struct ifnet *ifp = ubus->ifp;
if (ifp != NULL) {
bpfdetach(ifp);
if_down(ifp);
if_detach(ifp);
if_free(ifp);
}
ubus->ifp = NULL;
}
static uint32_t
usbpf_aggregate_xferflags(struct usb_xfer_flags *flags)
{
uint32_t val = 0;
if (flags->force_short_xfer == 1)
val |= USBPF_FLAG_FORCE_SHORT_XFER;
if (flags->short_xfer_ok == 1)
val |= USBPF_FLAG_SHORT_XFER_OK;
if (flags->short_frames_ok == 1)
val |= USBPF_FLAG_SHORT_FRAMES_OK;
if (flags->pipe_bof == 1)
val |= USBPF_FLAG_PIPE_BOF;
if (flags->proxy_buffer == 1)
val |= USBPF_FLAG_PROXY_BUFFER;
if (flags->ext_buffer == 1)
val |= USBPF_FLAG_EXT_BUFFER;
if (flags->manual_status == 1)
val |= USBPF_FLAG_MANUAL_STATUS;
if (flags->no_pipe_ok == 1)
val |= USBPF_FLAG_NO_PIPE_OK;
if (flags->stall_pipe == 1)
val |= USBPF_FLAG_STALL_PIPE;
return (val);
}
static uint32_t
usbpf_aggregate_status(struct usb_xfer_flags_int *flags)
{
uint32_t val = 0;
if (flags->open == 1)
val |= USBPF_STATUS_OPEN;
if (flags->transferring == 1)
val |= USBPF_STATUS_TRANSFERRING;
if (flags->did_dma_delay == 1)
val |= USBPF_STATUS_DID_DMA_DELAY;
if (flags->did_close == 1)
val |= USBPF_STATUS_DID_CLOSE;
if (flags->draining == 1)
val |= USBPF_STATUS_DRAINING;
if (flags->started == 1)
val |= USBPF_STATUS_STARTED;
if (flags->bandwidth_reclaimed == 1)
val |= USBPF_STATUS_BW_RECLAIMED;
if (flags->control_xfr == 1)
val |= USBPF_STATUS_CONTROL_XFR;
if (flags->control_hdr == 1)
val |= USBPF_STATUS_CONTROL_HDR;
if (flags->control_act == 1)
val |= USBPF_STATUS_CONTROL_ACT;
if (flags->control_stall == 1)
val |= USBPF_STATUS_CONTROL_STALL;
if (flags->short_frames_ok == 1)
val |= USBPF_STATUS_SHORT_FRAMES_OK;
if (flags->short_xfer_ok == 1)
val |= USBPF_STATUS_SHORT_XFER_OK;
#if USB_HAVE_BUSDMA
if (flags->bdma_enable == 1)
val |= USBPF_STATUS_BDMA_ENABLE;
if (flags->bdma_no_post_sync == 1)
val |= USBPF_STATUS_BDMA_NO_POST_SYNC;
if (flags->bdma_setup == 1)
val |= USBPF_STATUS_BDMA_SETUP;
#endif
if (flags->isochronous_xfr == 1)
val |= USBPF_STATUS_ISOCHRONOUS_XFR;
if (flags->curr_dma_set == 1)
val |= USBPF_STATUS_CURR_DMA_SET;
if (flags->can_cancel_immed == 1)
val |= USBPF_STATUS_CAN_CANCEL_IMMED;
if (flags->doing_callback == 1)
val |= USBPF_STATUS_DOING_CALLBACK;
return (val);
}
void
usbpf_xfertap(struct usb_xfer *xfer, int type)
{
struct usb_endpoint *ep = xfer->endpoint;
struct usb_page_search res;
struct usb_xfer_root *info = xfer->xroot;
struct usb_bus *bus = info->bus;
struct usbpf_pkthdr *up;
usb_frlength_t isoc_offset = 0;
int i;
char *buf, *ptr, *end;
if (!bpf_peers_present(bus->ifp->if_bpf))
return;
/*
* XXX TODO
* Allocating the buffer here causes copy operations twice what's
* really inefficient. Copying usbpf_pkthdr and data is for USB packet
* read filter to pass a virtually linear buffer.
*/
buf = ptr = malloc(sizeof(struct usbpf_pkthdr) + (USB_PAGE_SIZE * 5),
M_TEMP, M_NOWAIT);
if (buf == NULL) {
printf("usbpf_xfertap: out of memory\n"); /* XXX */
return;
}
end = buf + sizeof(struct usbpf_pkthdr) + (USB_PAGE_SIZE * 5);
bzero(ptr, sizeof(struct usbpf_pkthdr));
up = (struct usbpf_pkthdr *)ptr;
up->up_busunit = htole32(device_get_unit(bus->bdev));
up->up_type = type;
up->up_xfertype = ep->edesc->bmAttributes & UE_XFERTYPE;
up->up_address = xfer->address;
up->up_endpoint = xfer->endpointno;
up->up_flags = htole32(usbpf_aggregate_xferflags(&xfer->flags));
up->up_status = htole32(usbpf_aggregate_status(&xfer->flags_int));
switch (type) {
case USBPF_XFERTAP_SUBMIT:
up->up_length = htole32(xfer->sumlen);
up->up_frames = htole32(xfer->nframes);
break;
case USBPF_XFERTAP_DONE:
up->up_length = htole32(xfer->actlen);
up->up_frames = htole32(xfer->aframes);
break;
default:
panic("wrong usbpf type (%d)", type);
}
up->up_error = htole32(xfer->error);
up->up_interval = htole32(xfer->interval);
ptr += sizeof(struct usbpf_pkthdr);
for (i = 0; i < up->up_frames; i++) {
if (ptr + sizeof(u_int32_t) >= end)
goto done;
*((u_int32_t *)ptr) = htole32(xfer->frlengths[i]);
ptr += sizeof(u_int32_t);
if (ptr + xfer->frlengths[i] >= end)
goto done;
if (xfer->flags_int.isochronous_xfr == 1) {
usbd_get_page(&xfer->frbuffers[0], isoc_offset, &res);
isoc_offset += xfer->frlengths[i];
} else
usbd_get_page(&xfer->frbuffers[i], 0, &res);
bcopy(res.buffer, ptr, xfer->frlengths[i]);
ptr += xfer->frlengths[i];
}
bpf_tap(bus->ifp->if_bpf, buf, ptr - buf);
done:
free(buf, M_TEMP);
}
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