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3c60ba66c4
Bus Protocol 2:SCSI over IEEE1394) support for CAM.
220 lines
4.8 KiB
C
220 lines
4.8 KiB
C
/*
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* Copyright (C) 2002
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* Hidetoshi Shimokawa. All rights reserved.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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*
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* This product includes software developed by Hidetoshi Shimokawa.
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*
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* 4. Neither the name of the author 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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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/malloc.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <sys/errno.h>
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#include <sys/types.h>
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#include <sys/uio.h>
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#include <sys/poll.h>
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#include <dev/firewire/firewire.h>
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#include <netinet/in.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <err.h>
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#include <stdlib.h>
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#include <strings.h>
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#include <unistd.h>
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struct fwinfo {
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int fd;
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struct fw_asyreq *asyreq;
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} fw;
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void
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usage(void)
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{
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printf("fw_tap [-f fwdev] [-t tapdev] channel\n");
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exit(0);
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}
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static struct fwinfo
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init_fw(char *fwdev, int ch)
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{
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struct fw_isochreq chreq;
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struct fw_asyreq *asyreq;
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int fd;
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struct fwinfo fw;
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if ((fd = open(fwdev, O_RDWR)) < 0)
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err(1, "open");
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printf("ch=%d\n", ch);
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chreq.ch = ch;
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chreq.tag = 0;
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if (ioctl(fd, FW_SRSTREAM, &chreq) < 0)
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err(1, "ioctl");
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asyreq = (struct fw_asyreq *)malloc(sizeof(struct fw_asyreq));
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asyreq->req.type = FWASREQSTREAM;
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asyreq->req.sped = 2; /* S400 */
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asyreq->pkt.mode.stream.tcode = FWTCODE_STREAM;
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asyreq->pkt.mode.stream.sy = 0;
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asyreq->pkt.mode.stream.chtag = ch;
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fw.asyreq = asyreq;
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fw.fd = fd;
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return fw;
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}
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static int
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init_tap(char *tapdev)
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{
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int fd;
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if ((fd = open(tapdev, O_RDWR)) < 0)
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err(1, "open");
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/*
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* XXX We need to make it be promiscuous mode to discard packets
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* which upper layer shouldn't see in ether_demux() of if_ethersub.c.
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* use netgraph?
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*/
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return fd;
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}
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static void
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send_stream(struct fwinfo *fw, int len)
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{
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struct fw_asyreq *asyreq;
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asyreq = fw->asyreq;
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asyreq->req.len = len + 4;
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asyreq->pkt.mode.stream.len = htons(len);
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if (ioctl(fw->fd, FW_ASYREQ, asyreq) < 0)
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err(1, "ioctl");
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}
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#define MTU 2048
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#define HDR 4
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static void
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fw2tap(struct fwinfo fw, int tapd)
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{
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int res, size;
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struct pollfd pfd[2];
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char *buf, *fwbuf;
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int fwd;
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fwd = fw.fd;
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pfd[0].fd = fwd;
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pfd[0].events = POLLIN;
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pfd[1].fd = tapd;
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pfd[1].events = POLLIN;
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fwbuf = (char *)&fw.asyreq->pkt.mode.stream.payload[0];
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if ((buf = malloc(MTU + HDR)) == NULL)
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err(1, "malloc");
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while (1) {
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res = poll(pfd, 2, -1);
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if (pfd[0].revents & POLLIN) {
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size = read(fwd, buf, MTU + HDR);
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#if 0
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printf("in %5d bytes\n", size - HDR);
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#endif
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write(tapd, buf + HDR, size - HDR);
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}
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if (pfd[1].revents & POLLIN) {
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size = read(tapd, fwbuf, MTU);
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#if 0
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printf("out %5d bytes\n", size);
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#endif
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send_stream(&fw, size);
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}
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}
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}
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int
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main(int argc, char **argv)
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{
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int ch;
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int tapd;
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struct fwinfo fw;
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char *fwdev, *tapdev;
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if (argc < 2) {
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usage();
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}
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fwdev = "/dev/fw2";
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tapdev = "/dev/tap0";
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ch = 0;
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argv++;
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argc--;
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while (argc > 0) {
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if (strcmp(*argv, "-f") == 0) {
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/* fw device */
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argv++;
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argc--;
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if (argc > 0) {
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fwdev = *argv;
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argv++;
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argc--;
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} else {
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usage();
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}
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} else if (strcmp(*argv, "-t") == 0) {
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/* tap device */
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argv++;
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argc--;
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if (argc > 0) {
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tapdev = *argv;
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argv++;
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argc--;
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} else {
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usage();
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}
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} else if (argc > 0) {
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ch = strtoul(*argv, (char **)NULL, 0);
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argv++;
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argc--;
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} else {
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usage();
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}
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}
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fw = init_fw(fwdev, ch);
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tapd = init_tap(tapdev);
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fw2tap(fw, tapd);
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return 0;
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}
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