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