491 lines
12 KiB
C
491 lines
12 KiB
C
/* $NetBSD: if_ieee1394subr.c,v 1.1 2000/11/05 17:17:15 onoe Exp $ */
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/*
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* Copyright (c) 2000 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Atsushi Onoe.
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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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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "opt_inet.h"
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#include "bpfilter.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <sys/kernel.h>
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#include <sys/mbuf.h>
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#include <sys/device.h>
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#include <net/if.h>
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#include <net/if_dl.h>
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#include <net/if_ieee1394.h>
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#include <net/if_types.h>
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#include <net/if_media.h>
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#include <net/ethertypes.h>
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#include <net/netisr.h>
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#include <net/route.h>
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#if NBPFILTER > 0
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#include <net/bpf.h>
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#endif
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#ifdef INET
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#include <netinet/in.h>
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#include <netinet/in_var.h>
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#include <netinet/if_ieee1394arp.h>
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#endif /* INET */
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#ifdef INET6
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#include <netinet/in.h>
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#include <netinet6/in6_var.h>
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#include <netinet6/nd6.h>
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#endif /* INET6 */
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#define senderr(e) do { error = (e); goto bad; } while(0/*CONSTCOND*/)
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static int ieee1394_output(struct ifnet *, struct mbuf *, struct sockaddr *,
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struct rtentry *);
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static void ieee1394_input(struct ifnet *, struct mbuf *);
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static int
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ieee1394_output(struct ifnet *ifp, struct mbuf *m0, struct sockaddr *dst,
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struct rtentry *rt0)
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{
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u_int16_t etype = 0;
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int s, hdrlen, maxrec, len, off, tlen, error = 0;
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struct mbuf *m = m0, **mp;
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struct rtentry *rt;
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struct mbuf *mcopy = NULL;
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struct ieee1394com *ic = (struct ieee1394com *)ifp;
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#ifdef INET
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struct ieee1394_arphdr *ah;
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#endif /* INET */
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struct ieee1394_unfraghdr *iuh;
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struct ieee1394_fraghdr *ifh;
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struct ieee1394_hwaddr hwdst;
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if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
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senderr(ENETDOWN);
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ifp->if_lastchange = time;
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if ((rt = rt0) != NULL) {
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if ((rt->rt_flags & RTF_UP) == 0) {
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if ((rt0 = rt = rtalloc1(dst, 1)) != NULL) {
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rt->rt_refcnt--;
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if (rt->rt_ifp != ifp)
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return (*rt->rt_ifp->if_output)
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(ifp, m0, dst, rt);
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} else
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senderr(EHOSTUNREACH);
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}
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if (rt->rt_flags & RTF_GATEWAY) {
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if (rt->rt_gwroute == 0)
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goto lookup;
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if (((rt = rt->rt_gwroute)->rt_flags & RTF_UP) == 0) {
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rtfree(rt);
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rt = rt0;
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lookup:
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rt->rt_gwroute = rtalloc1(rt->rt_gateway, 1);
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if ((rt = rt->rt_gwroute) == 0)
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senderr(EHOSTUNREACH);
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/* the "G" test below also prevents rt == rt0 */
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if ((rt->rt_flags & RTF_GATEWAY) ||
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(rt->rt_ifp != ifp)) {
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rt->rt_refcnt--;
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rt0->rt_gwroute = 0;
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senderr(EHOSTUNREACH);
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}
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}
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}
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if (rt->rt_flags & RTF_REJECT)
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if (rt->rt_rmx.rmx_expire == 0 ||
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time.tv_sec < rt->rt_rmx.rmx_expire)
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senderr(rt == rt0 ? EHOSTDOWN : EHOSTUNREACH);
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}
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switch (dst->sa_family) {
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#ifdef INET
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case AF_INET:
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if (m->m_flags & (M_BCAST|M_MCAST))
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memcpy(&hwdst, ifp->if_broadcastaddr, sizeof(hwdst));
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else if (!ieee1394arpresolve(ifp, rt, m, dst, &hwdst))
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return 0; /* if not yet resolved */
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/* if broadcasting on a simplex interface, loopback a copy */
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if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX))
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mcopy = m_copy(m, 0, (int)M_COPYALL);
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etype = htons(ETHERTYPE_IP);
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break;
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case AF_ARP:
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ah = mtod(m, struct ieee1394_arphdr *);
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memcpy(&hwdst, ifp->if_broadcastaddr, sizeof(hwdst));
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etype = htons(ETHERTYPE_ARP);
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break;
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#endif /* INET */
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#ifdef INET6
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case AF_INET6:
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if (m->m_flags & M_MCAST)
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memcpy(&hwdst, ifp->if_broadcastaddr, sizeof(hwdst));
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else if (!nd6_storelladdr(ifp, rt, m, dst, (u_char *)&hwdst)) {
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/* this must be impossible, so we bark */
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printf("ieee1394_output: nd6_storelladdr failed\n");
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return 0;
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}
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etype = htons(ETHERTYPE_IPV6);
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break;
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#endif /* INET6 */
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case pseudo_AF_HDRCMPLT:
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case AF_UNSPEC:
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/* TODO? */
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default:
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printf("%s: can't handle af%d\n", ifp->if_xname,
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dst->sa_family);
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senderr(EAFNOSUPPORT);
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break;
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}
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if (mcopy)
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looutput(ifp, mcopy, dst, rt);
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#if NBPFILTER > 0
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if (ifp->if_bpf) {
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struct mbuf mb;
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mb.m_next = m;
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mb.m_len = 14;
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mb.m_data = mb.m_dat;
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((u_int32_t *)mb.m_data)[0] = 0;
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((u_int32_t *)mb.m_data)[1] = 0;
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((u_int32_t *)mb.m_data)[2] = 0;
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((u_int16_t *)mb.m_data)[6] = etype;
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bpf_mtap(ifp->if_bpf, &mb);
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}
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#endif
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/* determine fragmented or not */
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maxrec = 1 << (hwdst.iha_maxrec + 1);
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if (m->m_flags & (M_BCAST|M_MCAST))
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hdrlen = IEEE1394_STRHDRLEN + sizeof(*iuh);
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else
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hdrlen = IEEE1394_AWBHDRLEN + sizeof(*iuh);
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if (m->m_pkthdr.len < maxrec - hdrlen) {
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M_PREPEND(m, sizeof(hwdst) + sizeof(*iuh), M_DONTWAIT);
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if (m == 0)
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senderr(ENOBUFS);
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memcpy(mtod(m, caddr_t), &hwdst, sizeof(hwdst));
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iuh = (struct ieee1394_unfraghdr *)
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(mtod(m, caddr_t) + sizeof(hwdst));
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iuh->iuh_ft = 0;
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iuh->iuh_etype = etype;
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s = splimp();
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if (IF_QFULL(&ifp->if_snd)) {
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IF_DROP(&ifp->if_snd);
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splx(s);
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senderr(ENOBUFS);
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}
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IF_ENQUEUE(&ifp->if_snd, m);
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ifp->if_obytes += m0->m_pkthdr.len;
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goto done;
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}
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printf("ieee1304_output: fragment packet\n");
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hdrlen += sizeof(*ifh) - sizeof(*iuh);
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len = maxrec - hdrlen;
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off = len;
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mp = &m0->m_nextpkt;
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while (off < m0->m_pkthdr.len) {
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MGETHDR(m, M_DONTWAIT, MT_HEADER);
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if (m == NULL)
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senderr(ENOBUFS);
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m->m_flags |= m0->m_flags & (M_BCAST|M_MCAST);
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tlen = len;
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if (tlen > m0->m_pkthdr.len - off)
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tlen = m0->m_pkthdr.len - off;
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m->m_data += hdrlen - sizeof(hwdst);
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m->m_len = sizeof(hwdst) + sizeof(*ifh);
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memcpy(mtod(m, caddr_t), &hwdst, sizeof(hwdst));
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ifh = (struct ieee1394_fraghdr *)
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(mtod(m, caddr_t) + sizeof(hwdst));
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ifh->ifh_ft_size = htons(0xc000 | tlen);
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ifh->ifh_etype_off = htons(off);
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ifh->ifh_dgl = htons(ic->ic_dgl);
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ifh->ifh_reserved = 0;
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m->m_next = m_copy(m0, off, tlen);
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if (m->m_next == NULL)
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senderr(ENOBUFS);
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off += tlen;
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*mp = m;
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mp = &m->m_nextpkt;
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}
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ifh->ifh_ft_size &= ~htons(0x4000); /* note last fragment */
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/* first fragment */
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m = m0;
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M_PREPEND(m, sizeof(hwdst) + sizeof(*ifh), M_DONTWAIT);
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memcpy(mtod(m, caddr_t), &hwdst, sizeof(hwdst));
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ifh = (struct ieee1394_fraghdr *)(mtod(m, caddr_t) + sizeof(hwdst));
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ifh->ifh_ft_size = htons(0x4000 | (maxrec - hdrlen));
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ifh->ifh_etype_off = etype;
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ifh->ifh_dgl = htons(ic->ic_dgl++);
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ifh->ifh_reserved = 0;
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/* send off */
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s = splimp();
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if (IF_QFULL(&ifp->if_snd)) {
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IF_DROP(&ifp->if_snd);
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splx(s);
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senderr(ENOBUFS);
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}
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while (m0 != NULL) {
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m = m0->m_nextpkt;
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m0->m_nextpkt = NULL;
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IF_ENQUEUE(&ifp->if_snd, m0);
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ifp->if_obytes += m0->m_pkthdr.len;
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m0 = m;
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}
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done:
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if (m0->m_flags & M_MCAST)
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ifp->if_omcasts++;
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if ((ifp->if_flags & IFF_OACTIVE) == 0)
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(*ifp->if_start)(ifp);
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splx(s);
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return error;
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bad:
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while (m0 != NULL) {
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m = m0->m_nextpkt;
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m_freem(m0);
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m0 = m;
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}
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return error;
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}
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static void
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ieee1394_input(struct ifnet *ifp, struct mbuf *m)
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{
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struct ifqueue *inq;
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u_int16_t etype;
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int s;
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struct ieee1394_unfraghdr *iuh;
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if ((ifp->if_flags & IFF_UP) == 0) {
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m_freem(m);
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return;
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}
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iuh = mtod(m, struct ieee1394_unfraghdr *);
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if (iuh->iuh_ft != 0) {
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printf("%s: ieee1394_input: fragment not implemented yet\n",
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ifp->if_xname);
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m_freem(m);
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return;
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}
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etype = ntohs(iuh->iuh_etype);
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/* strip off the ieee1394 header */
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m_adj(m, sizeof(struct ieee1394_unfraghdr));
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#if NBPFILTER > 0
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if (ifp->if_bpf) {
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struct mbuf mb;
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mb.m_next = m;
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mb.m_len = 14;
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mb.m_data = mb.m_dat;
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((u_int32_t *)mb.m_data)[0] = 0;
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((u_int32_t *)mb.m_data)[1] = 0;
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((u_int32_t *)mb.m_data)[2] = 0;
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((u_int16_t *)mb.m_data)[6] = iuh->iuh_etype;
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bpf_mtap(ifp->if_bpf, &mb);
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}
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#endif
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switch (etype) {
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#ifdef INET
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case ETHERTYPE_IP:
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schednetisr(NETISR_IP);
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inq = &ipintrq;
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break;
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case ETHERTYPE_ARP:
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in_ieee1394arpinput(m);
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return;
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#endif /* INET */
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#ifdef INET6
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case ETHERTYPE_IPV6:
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schednetisr(NETISR_IPV6);
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inq = &ip6intrq;
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break;
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#endif /* INET6 */
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default:
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m_freem(m);
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return;
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}
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s = splimp();
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if (IF_QFULL(inq)) {
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IF_DROP(inq);
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m_freem(m);
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} else
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IF_ENQUEUE(inq, m);
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splx(s);
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}
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const char *
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ieee1394_sprintf(const u_int8_t *laddr)
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{
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static char buf[3*8];
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snprintf(buf, sizeof(buf), "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
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laddr[0], laddr[1], laddr[2], laddr[3],
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laddr[4], laddr[5], laddr[6], laddr[7]);
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return buf;
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}
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void
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ieee1394_ifattach(struct ifnet *ifp, const struct ieee1394_hwaddr *hwaddr)
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{
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struct sockaddr_dl *sdl;
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ifp->if_type = IFT_IEEE1394;
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ifp->if_addrlen = sizeof(struct ieee1394_hwaddr);
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ifp->if_hdrlen = sizeof(struct ieee1394_header);
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ifp->if_mtu = IEEE1394MTU;
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ifp->if_output = ieee1394_output;
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ifp->if_input = ieee1394_input;
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if (ifp->if_baudrate == 0)
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ifp->if_baudrate = IF_Mbps(100);
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if ((sdl = ifp->if_sadl) && sdl->sdl_family == AF_LINK) {
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sdl->sdl_type = ifp->if_type;
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sdl->sdl_alen = ifp->if_addrlen;
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memcpy(LLADDR(sdl), hwaddr, ifp->if_addrlen);
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}
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ifp->if_broadcastaddr = malloc(ifp->if_addrlen, M_DEVBUF, M_WAITOK);
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memcpy(ifp->if_broadcastaddr, hwaddr, ifp->if_addrlen);
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memset(ifp->if_broadcastaddr, 0xff, IEEE1394_ADDR_LEN);
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}
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void
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ieee1394_ifdetach(struct ifnet *ifp)
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{
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struct sockaddr_dl *sdl = ifp->if_sadl;
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free(ifp->if_broadcastaddr, M_DEVBUF);
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ifp->if_broadcastaddr = NULL;
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memset(LLADDR(sdl), 0, sizeof(struct ieee1394_hwaddr));
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sdl->sdl_alen = 0;
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sdl->sdl_type = 0;
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}
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int
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ieee1394_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
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{
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struct ifreq *ifr = (struct ifreq *)data;
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struct ifaddr *ifa = (struct ifaddr *)data;
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int error = 0;
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#if __NetBSD_Version < 105080000
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int fw_init(struct ifnet *);
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void fw_stop(struct ifnet *, int);
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#endif
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switch (cmd) {
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case SIOCSIFADDR:
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ifp->if_flags |= IFF_UP;
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switch (ifa->ifa_addr->sa_family) {
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#ifdef INET
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case AF_INET:
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#if __NetBSD_Version >= 105080000
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if ((error = (*ifp->if_init)(ifp)) != 0)
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#else
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if ((error = fw_init(ifp)) != 0)
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#endif
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break;
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ieee1394arp_ifinit(ifp, ifa);
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break;
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#endif /* INET */
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default:
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#if __NetBSD_Version >= 105080000
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error = (*ifp->if_init)(ifp);
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#else
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error = fw_init(ifp);
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#endif
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break;
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}
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break;
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case SIOCGIFADDR:
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memcpy(((struct sockaddr *)&ifr->ifr_data)->sa_data,
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LLADDR(ifp->if_sadl), IEEE1394_ADDR_LEN);
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break;
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case SIOCSIFMTU:
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if (ifr->ifr_mtu > IEEE1394MTU)
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error = EINVAL;
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else
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ifp->if_mtu = ifr->ifr_mtu;
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break;
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case SIOCSIFFLAGS:
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#if __NetBSD_Version >= 105080000
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if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) == IFF_RUNNING)
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(*ifp->if_stop)(ifp, 1);
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else if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) == IFF_UP)
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error = (*ifp->if_init)(ifp);
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else if ((ifp->if_flags & IFF_UP) != 0)
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error = (*ifp->if_init)(ifp);
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#else
|
|
if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) == IFF_RUNNING)
|
|
fw_stop(ifp, 1);
|
|
else if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) == IFF_UP)
|
|
error = fw_init(ifp);
|
|
else if ((ifp->if_flags & IFF_UP) != 0)
|
|
error = fw_init(ifp);
|
|
#endif
|
|
break;
|
|
|
|
case SIOCADDMULTI:
|
|
case SIOCDELMULTI:
|
|
/* nothing to do */
|
|
break;
|
|
|
|
default:
|
|
error = ENOTTY;
|
|
break;
|
|
}
|
|
|
|
return error;
|
|
}
|