Initial import

Code is based on FreeBSD 8.2 with USB support from Sebastian Huber
and Thomas Doerfler. Initial TCP/IP stack work is from Kevel Kirspel.

1 files changed, 853 insertions, 0 deletions

diff --git a/rtems/freebsd/net/if_fwsubr.c b/rtems/freebsd/net/if_fwsubr.c
new file mode 100644
index 00000000..5d0e904d
--- /dev/null
+++ b/rtems/freebsd/net/if_fwsubr.c
@@ -0,0 +1,853 @@
+#include <rtems/freebsd/machine/rtems-bsd-config.h>
+
+/*-
+ * Copyright (c) 2004 Doug Rabson
+ * Copyright (c) 1982, 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <rtems/freebsd/local/opt_inet.h>
+#include <rtems/freebsd/local/opt_inet6.h>
+
+#include <rtems/freebsd/sys/param.h>
+#include <rtems/freebsd/sys/systm.h>
+#include <rtems/freebsd/sys/kernel.h>
+#include <rtems/freebsd/sys/malloc.h>
+#include <rtems/freebsd/sys/mbuf.h>
+#include <rtems/freebsd/sys/module.h>
+#include <rtems/freebsd/sys/socket.h>
+#include <rtems/freebsd/sys/sockio.h>
+
+#include <rtems/freebsd/net/if.h>
+#include <rtems/freebsd/net/netisr.h>
+#include <rtems/freebsd/net/route.h>
+#include <rtems/freebsd/net/if_llc.h>
+#include <rtems/freebsd/net/if_dl.h>
+#include <rtems/freebsd/net/if_types.h>
+#include <rtems/freebsd/net/bpf.h>
+#include <rtems/freebsd/net/firewire.h>
+#include <rtems/freebsd/net/if_llatbl.h>
+
+#if defined(INET) || defined(INET6)
+#include <rtems/freebsd/netinet/in.h>
+#include <rtems/freebsd/netinet/in_var.h>
+#include <rtems/freebsd/netinet/if_ether.h>
+#endif
+#ifdef INET6
+#include <rtems/freebsd/netinet6/nd6.h>
+#endif
+
+#include <rtems/freebsd/security/mac/mac_framework.h>
+
+MALLOC_DEFINE(M_FWCOM, "fw_com", "firewire interface internals");
+
+struct fw_hwaddr firewire_broadcastaddr = {
+	0xffffffff,
+	0xffffffff,
+	0xff,
+	0xff,
+	0xffff,
+	0xffffffff
+};
+
+static int
+firewire_output(struct ifnet *ifp, struct mbuf *m, struct sockaddr *dst,
+    struct route *ro)
+{
+	struct fw_com *fc = IFP2FWC(ifp);
+	int error, type;
+	struct m_tag *mtag;
+	union fw_encap *enc;
+	struct fw_hwaddr *destfw;
+	uint8_t speed;
+	uint16_t psize, fsize, dsize;
+	struct mbuf *mtail;
+	int unicast, dgl, foff;
+	static int next_dgl;
+#if defined(INET) || defined(INET6)
+	struct llentry *lle;
+#endif
+
+#ifdef MAC
+	error = mac_ifnet_check_transmit(ifp, m);
+	if (error)
+		goto bad;
+#endif
+
+	if (!((ifp->if_flags & IFF_UP) &&
+	   (ifp->if_drv_flags & IFF_DRV_RUNNING))) {
+		error = ENETDOWN;
+		goto bad;
+	}
+
+	/*
+	 * For unicast, we make a tag to store the lladdr of the
+	 * destination. This might not be the first time we have seen
+	 * the packet (for instance, the arp code might be trying to
+	 * re-send it after receiving an arp reply) so we only
+	 * allocate a tag if there isn't one there already. For
+	 * multicast, we will eventually use a different tag to store
+	 * the channel number.
+	 */
+	unicast = !(m->m_flags & (M_BCAST | M_MCAST));
+	if (unicast) {
+		mtag = m_tag_locate(m, MTAG_FIREWIRE, MTAG_FIREWIRE_HWADDR, NULL);
+		if (!mtag) {
+			mtag = m_tag_alloc(MTAG_FIREWIRE, MTAG_FIREWIRE_HWADDR,
+			    sizeof (struct fw_hwaddr), M_NOWAIT);
+			if (!mtag) {
+				error = ENOMEM;
+				goto bad;
+			}
+			m_tag_prepend(m, mtag);
+		}
+		destfw = (struct fw_hwaddr *)(mtag + 1);
+	} else {
+		destfw = 0;
+	}
+
+	switch (dst->sa_family) {
+#ifdef INET
+	case AF_INET:
+		/*
+		 * Only bother with arp for unicast. Allocation of
+		 * channels etc. for firewire is quite different and
+		 * doesn't fit into the arp model.
+		 */
+		if (unicast) {
+			error = arpresolve(ifp, ro ? ro->ro_rt : NULL, m, dst, (u_char *) destfw, &lle);
+			if (error)
+				return (error == EWOULDBLOCK ? 0 : error);
+		}
+		type = ETHERTYPE_IP;
+		break;
+
+	case AF_ARP:
+	{
+		struct arphdr *ah;
+		ah = mtod(m, struct arphdr *);
+		ah->ar_hrd = htons(ARPHRD_IEEE1394);
+		type = ETHERTYPE_ARP;
+		if (unicast)
+			*destfw = *(struct fw_hwaddr *) ar_tha(ah);
+
+		/*
+		 * The standard arp code leaves a hole for the target
+		 * hardware address which we need to close up.
+		 */
+		bcopy(ar_tpa(ah), ar_tha(ah), ah->ar_pln);
+		m_adj(m, -ah->ar_hln);
+		break;
+	}
+#endif
+
+#ifdef INET6
+	case AF_INET6:
+		if (unicast) {
+			error = nd6_storelladdr(fc->fc_ifp, m, dst,
+			    (u_char *) destfw, &lle);
+			if (error)
+				return (error);
+		}
+		type = ETHERTYPE_IPV6;
+		break;
+#endif
+
+	default:
+		if_printf(ifp, "can't handle af%d\n", dst->sa_family);
+		error = EAFNOSUPPORT;
+		goto bad;
+	}
+
+	/*
+	 * Let BPF tap off a copy before we encapsulate.
+	 */
+	if (bpf_peers_present(ifp->if_bpf)) {
+		struct fw_bpfhdr h;
+		if (unicast)
+			bcopy(destfw, h.firewire_dhost, 8);
+		else
+			bcopy(&firewire_broadcastaddr, h.firewire_dhost, 8);
+		bcopy(&fc->fc_hwaddr, h.firewire_shost, 8);
+		h.firewire_type = htons(type);
+		bpf_mtap2(ifp->if_bpf, &h, sizeof(h), m);
+	}
+
+	/*
+	 * Punt on MCAP for now and send all multicast packets on the
+	 * broadcast channel.
+	 */
+	if (m->m_flags & M_MCAST)
+		m->m_flags |= M_BCAST;
+
+	/*
+	 * Figure out what speed to use and what the largest supported
+	 * packet size is. For unicast, this is the minimum of what we
+	 * can speak and what they can hear. For broadcast, lets be
+	 * conservative and use S100. We could possibly improve that
+	 * by examining the bus manager's speed map or similar. We
+	 * also reduce the packet size for broadcast to account for
+	 * the GASP header.
+	 */
+	if (unicast) {
+		speed = min(fc->fc_speed, destfw->sspd);
+		psize = min(512 << speed, 2 << destfw->sender_max_rec);
+	} else {
+		speed = 0;
+		psize = 512 - 2*sizeof(uint32_t);
+	}
+
+	/*
+	 * Next, we encapsulate, possibly fragmenting the original
+	 * datagram if it won't fit into a single packet.
+	 */
+	if (m->m_pkthdr.len <= psize - sizeof(uint32_t)) {
+		/*
+		 * No fragmentation is necessary.
+		 */
+		M_PREPEND(m, sizeof(uint32_t), M_DONTWAIT);
+		if (!m) {
+			error = ENOBUFS;
+			goto bad;
+		}
+		enc = mtod(m, union fw_encap *);
+		enc->unfrag.ether_type = type;
+		enc->unfrag.lf = FW_ENCAP_UNFRAG;
+		enc->unfrag.reserved = 0;
+
+		/*
+		 * Byte swap the encapsulation header manually.
+		 */
+		enc->ul[0] = htonl(enc->ul[0]);
+
+		error = (ifp->if_transmit)(ifp, m);
+		return (error);
+	} else {
+		/*
+		 * Fragment the datagram, making sure to leave enough
+		 * space for the encapsulation header in each packet.
+		 */
+		fsize = psize - 2*sizeof(uint32_t);
+		dgl = next_dgl++;
+		dsize = m->m_pkthdr.len;
+		foff = 0;
+		while (m) {
+			if (m->m_pkthdr.len > fsize) {
+				/*
+				 * Split off the tail segment from the
+				 * datagram, copying our tags over.
+				 */
+				mtail = m_split(m, fsize, M_DONTWAIT);
+				m_tag_copy_chain(mtail, m, M_NOWAIT);
+			} else {
+				mtail = 0;
+			}
+
+			/*
+			 * Add our encapsulation header to this
+			 * fragment and hand it off to the link.
+			 */
+			M_PREPEND(m, 2*sizeof(uint32_t), M_DONTWAIT);
+			if (!m) {
+				error = ENOBUFS;
+				goto bad;
+			}
+			enc = mtod(m, union fw_encap *);
+			if (foff == 0) {
+				enc->firstfrag.lf = FW_ENCAP_FIRST;
+				enc->firstfrag.reserved1 = 0;
+				enc->firstfrag.reserved2 = 0;
+				enc->firstfrag.datagram_size = dsize - 1;
+				enc->firstfrag.ether_type = type;
+				enc->firstfrag.dgl = dgl;
+			} else {
+				if (mtail)
+					enc->nextfrag.lf = FW_ENCAP_NEXT;
+				else
+					enc->nextfrag.lf = FW_ENCAP_LAST;
+				enc->nextfrag.reserved1 = 0;
+				enc->nextfrag.reserved2 = 0;
+				enc->nextfrag.reserved3 = 0;
+				enc->nextfrag.datagram_size = dsize - 1;
+				enc->nextfrag.fragment_offset = foff;
+				enc->nextfrag.dgl = dgl;
+			}
+			foff += m->m_pkthdr.len - 2*sizeof(uint32_t);
+
+			/*
+			 * Byte swap the encapsulation header manually.
+			 */
+			enc->ul[0] = htonl(enc->ul[0]);
+			enc->ul[1] = htonl(enc->ul[1]);
+
+			error = (ifp->if_transmit)(ifp, m);
+			if (error) {
+				if (mtail)
+					m_freem(mtail);
+				return (ENOBUFS);
+			}
+
+			m = mtail;
+		}
+
+		return (0);
+	}
+
+bad:
+	if (m)
+		m_freem(m);
+	return (error);
+}
+
+static struct mbuf *
+firewire_input_fragment(struct fw_com *fc, struct mbuf *m, int src)
+{
+	union fw_encap *enc;
+	struct fw_reass *r;
+	struct mbuf *mf, *mprev;
+	int dsize;
+	int fstart, fend, start, end, islast;
+	uint32_t id;
+
+	/*
+	 * Find an existing reassembly buffer or create a new one.
+	 */
+	enc = mtod(m, union fw_encap *);
+	id = enc->firstfrag.dgl | (src << 16);
+	STAILQ_FOREACH(r, &fc->fc_frags, fr_link)
+		if (r->fr_id == id)
+			break;
+	if (!r) {
+		r = malloc(sizeof(struct fw_reass), M_TEMP, M_NOWAIT);
+		if (!r) {
+			m_freem(m);
+			return 0;
+		}
+		r->fr_id = id;
+		r->fr_frags = 0;
+		STAILQ_INSERT_HEAD(&fc->fc_frags, r, fr_link);
+	}
+
+	/*
+	 * If this fragment overlaps any other fragment, we must discard
+	 * the partial reassembly and start again.
+	 */
+	if (enc->firstfrag.lf == FW_ENCAP_FIRST)
+		fstart = 0;
+	else
+		fstart = enc->nextfrag.fragment_offset;
+	fend = fstart + m->m_pkthdr.len - 2*sizeof(uint32_t);
+	dsize = enc->nextfrag.datagram_size;
+	islast = (enc->nextfrag.lf == FW_ENCAP_LAST);
+
+	for (mf = r->fr_frags; mf; mf = mf->m_nextpkt) {
+		enc = mtod(mf, union fw_encap *);
+		if (enc->nextfrag.datagram_size != dsize) {
+			/*
+			 * This fragment must be from a different
+			 * packet.
+			 */
+			goto bad;
+		}
+		if (enc->firstfrag.lf == FW_ENCAP_FIRST)
+			start = 0;
+		else
+			start = enc->nextfrag.fragment_offset;
+		end = start + mf->m_pkthdr.len - 2*sizeof(uint32_t);
+		if ((fstart < end && fend > start) ||
+		    (islast && enc->nextfrag.lf == FW_ENCAP_LAST)) {
+			/*
+			 * Overlap - discard reassembly buffer and start
+			 * again with this fragment.
+			 */
+			goto bad;
+		}
+	}
+
+	/*
+	 * Find where to put this fragment in the list.
+	 */
+	for (mf = r->fr_frags, mprev = NULL; mf;
+	    mprev = mf, mf = mf->m_nextpkt) {
+		enc = mtod(mf, union fw_encap *);
+		if (enc->firstfrag.lf == FW_ENCAP_FIRST)
+			start = 0;
+		else
+			start = enc->nextfrag.fragment_offset;
+		if (start >= fend)
+			break;
+	}
+
+	/*
+	 * If this is a last fragment and we are not adding at the end
+	 * of the list, discard the buffer.
+	 */
+	if (islast && mprev && mprev->m_nextpkt)
+		goto bad;
+
+	if (mprev) {
+		m->m_nextpkt = mprev->m_nextpkt;
+		mprev->m_nextpkt = m;
+
+		/*
+		 * Coalesce forwards and see if we can make a whole
+		 * datagram.
+		 */
+		enc = mtod(mprev, union fw_encap *);
+		if (enc->firstfrag.lf == FW_ENCAP_FIRST)
+			start = 0;
+		else
+			start = enc->nextfrag.fragment_offset;
+		end = start + mprev->m_pkthdr.len - 2*sizeof(uint32_t);
+		while (end == fstart) {
+			/*
+			 * Strip off the encap header from m and
+			 * append it to mprev, freeing m.
+			 */
+			m_adj(m, 2*sizeof(uint32_t));
+			mprev->m_nextpkt = m->m_nextpkt;
+			mprev->m_pkthdr.len += m->m_pkthdr.len;
+			m_cat(mprev, m);
+
+			if (mprev->m_pkthdr.len == dsize + 1 + 2*sizeof(uint32_t)) {
+				/*
+				 * We have assembled a complete packet
+				 * we must be finished. Make sure we have
+				 * merged the whole chain.
+				 */
+				STAILQ_REMOVE(&fc->fc_frags, r, fw_reass, fr_link);
+				free(r, M_TEMP);
+				m = mprev->m_nextpkt;
+				while (m) {
+					mf = m->m_nextpkt;
+					m_freem(m);
+					m = mf;
+				}
+				mprev->m_nextpkt = NULL;
+
+				return (mprev);
+			}
+
+			/*
+			 * See if we can continue merging forwards.
+			 */
+			end = fend;
+			m = mprev->m_nextpkt;
+			if (m) {
+				enc = mtod(m, union fw_encap *);
+				if (enc->firstfrag.lf == FW_ENCAP_FIRST)
+					fstart = 0;
+				else
+					fstart = enc->nextfrag.fragment_offset;
+				fend = fstart + m->m_pkthdr.len
+				    - 2*sizeof(uint32_t);
+			} else {
+				break;
+			}
+		}
+	} else {
+		m->m_nextpkt = 0;
+		r->fr_frags = m;
+	}
+
+	return (0);
+
+bad:
+	while (r->fr_frags) {
+		mf = r->fr_frags;
+		r->fr_frags = mf->m_nextpkt;
+		m_freem(mf);
+	}
+	m->m_nextpkt = 0;
+	r->fr_frags = m;
+
+	return (0);
+}
+
+void
+firewire_input(struct ifnet *ifp, struct mbuf *m, uint16_t src)
+{
+	struct fw_com *fc = IFP2FWC(ifp);
+	union fw_encap *enc;
+	int type, isr;
+
+	/*
+	 * The caller has already stripped off the packet header
+	 * (stream or wreqb) and marked the mbuf's M_BCAST flag
+	 * appropriately. We de-encapsulate the IP packet and pass it
+	 * up the line after handling link-level fragmentation.
+	 */
+	if (m->m_pkthdr.len < sizeof(uint32_t)) {
+		if_printf(ifp, "discarding frame without "
+		    "encapsulation header (len %u pkt len %u)\n",
+		    m->m_len, m->m_pkthdr.len);
+	}
+
+	m = m_pullup(m, sizeof(uint32_t));
+	if (m == NULL)
+		return;
+	enc = mtod(m, union fw_encap *);
+
+	/*
+	 * Byte swap the encapsulation header manually.
+	 */
+	enc->ul[0] = ntohl(enc->ul[0]);
+
+	if (enc->unfrag.lf != 0) {
+		m = m_pullup(m, 2*sizeof(uint32_t));
+		if (!m)
+			return;
+		enc = mtod(m, union fw_encap *);
+		enc->ul[1] = ntohl(enc->ul[1]);
+		m = firewire_input_fragment(fc, m, src);
+		if (!m)
+			return;
+		enc = mtod(m, union fw_encap *);
+		type = enc->firstfrag.ether_type;
+		m_adj(m, 2*sizeof(uint32_t));
+	} else {
+		type = enc->unfrag.ether_type;
+		m_adj(m, sizeof(uint32_t));
+	}
+
+	if (m->m_pkthdr.rcvif == NULL) {
+		if_printf(ifp, "discard frame w/o interface pointer\n");
+		ifp->if_ierrors++;
+		m_freem(m);
+		return;
+	}
+#ifdef DIAGNOSTIC
+	if (m->m_pkthdr.rcvif != ifp) {
+		if_printf(ifp, "Warning, frame marked as received on %s\n",
+			m->m_pkthdr.rcvif->if_xname);
+	}
+#endif
+
+#ifdef MAC
+	/*
+	 * Tag the mbuf with an appropriate MAC label before any other
+	 * consumers can get to it.
+	 */
+	mac_ifnet_create_mbuf(ifp, m);
+#endif
+
+	/*
+	 * Give bpf a chance at the packet. The link-level driver
+	 * should have left us a tag with the EUID of the sender.
+	 */
+	if (bpf_peers_present(ifp->if_bpf)) {
+		struct fw_bpfhdr h;
+		struct m_tag *mtag;
+
+		mtag = m_tag_locate(m, MTAG_FIREWIRE, MTAG_FIREWIRE_SENDER_EUID, 0);
+		if (mtag)
+			bcopy(mtag + 1, h.firewire_shost, 8);
+		else
+			bcopy(&firewire_broadcastaddr, h.firewire_dhost, 8);
+		bcopy(&fc->fc_hwaddr, h.firewire_dhost, 8);
+		h.firewire_type = htons(type);
+		bpf_mtap2(ifp->if_bpf, &h, sizeof(h), m);
+	}
+
+	if (ifp->if_flags & IFF_MONITOR) {
+		/*
+		 * Interface marked for monitoring; discard packet.
+		 */
+		m_freem(m);
+		return;
+	}
+
+	ifp->if_ibytes += m->m_pkthdr.len;
+
+	/* Discard packet if interface is not up */
+	if ((ifp->if_flags & IFF_UP) == 0) {
+		m_freem(m);
+		return;
+	}
+
+	if (m->m_flags & (M_BCAST|M_MCAST))
+		ifp->if_imcasts++;
+
+	switch (type) {
+#ifdef INET
+	case ETHERTYPE_IP:
+		if ((m = ip_fastforward(m)) == NULL)
+			return;
+		isr = NETISR_IP;
+		break;
+
+	case ETHERTYPE_ARP:
+	{
+		struct arphdr *ah;
+		ah = mtod(m, struct arphdr *);
+
+		/*
+		 * Adjust the arp packet to insert an empty tha slot.
+		 */
+		m->m_len += ah->ar_hln;
+		m->m_pkthdr.len += ah->ar_hln;
+		bcopy(ar_tha(ah), ar_tpa(ah), ah->ar_pln);
+		isr = NETISR_ARP;
+		break;
+	}
+#endif
+
+#ifdef INET6
+	case ETHERTYPE_IPV6:
+		isr = NETISR_IPV6;
+		break;
+#endif
+
+	default:
+		m_freem(m);
+		return;
+	}
+
+	netisr_dispatch(isr, m);
+}
+
+int
+firewire_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
+{
+	struct ifaddr *ifa = (struct ifaddr *) data;
+	struct ifreq *ifr = (struct ifreq *) data;
+	int error = 0;
+
+	switch (command) {
+	case SIOCSIFADDR:
+		ifp->if_flags |= IFF_UP;
+
+		switch (ifa->ifa_addr->sa_family) {
+#ifdef INET
+		case AF_INET:
+			ifp->if_init(ifp->if_softc);	/* before arpwhohas */
+			arp_ifinit(ifp, ifa);
+			break;
+#endif
+		default:
+			ifp->if_init(ifp->if_softc);
+			break;
+		}
+		break;
+
+	case SIOCGIFADDR:
+		{
+			struct sockaddr *sa;
+
+			sa = (struct sockaddr *) & ifr->ifr_data;
+			bcopy(&IFP2FWC(ifp)->fc_hwaddr,
+			    (caddr_t) sa->sa_data, sizeof(struct fw_hwaddr));
+		}
+		break;
+
+	case SIOCSIFMTU:
+		/*
+		 * Set the interface MTU.
+		 */
+		if (ifr->ifr_mtu > 1500) {
+			error = EINVAL;
+		} else {
+			ifp->if_mtu = ifr->ifr_mtu;
+		}
+		break;
+	default:
+		error = EINVAL;			/* XXX netbsd has ENOTTY??? */
+		break;
+	}
+	return (error);
+}
+
+static int
+firewire_resolvemulti(struct ifnet *ifp, struct sockaddr **llsa,
+    struct sockaddr *sa)
+{
+#ifdef INET
+	struct sockaddr_in *sin;
+#endif
+#ifdef INET6
+	struct sockaddr_in6 *sin6;
+#endif
+
+	switch(sa->sa_family) {
+	case AF_LINK:
+		/*
+		 * No mapping needed.
+		 */
+		*llsa = 0;
+		return 0;
+
+#ifdef INET
+	case AF_INET:
+		sin = (struct sockaddr_in *)sa;
+		if (!IN_MULTICAST(ntohl(sin->sin_addr.s_addr)))
+			return EADDRNOTAVAIL;
+		*llsa = 0;
+		return 0;
+#endif
+#ifdef INET6
+	case AF_INET6:
+		sin6 = (struct sockaddr_in6 *)sa;
+		if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
+			/*
+			 * An IP6 address of 0 means listen to all
+			 * of the Ethernet multicast address used for IP6.
+			 * (This is used for multicast routers.)
+			 */
+			ifp->if_flags |= IFF_ALLMULTI;
+			*llsa = 0;
+			return 0;
+		}
+		if (!IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr))
+			return EADDRNOTAVAIL;
+		*llsa = 0;
+		return 0;
+#endif
+
+	default:
+		/*
+		 * Well, the text isn't quite right, but it's the name
+		 * that counts...
+		 */
+		return EAFNOSUPPORT;
+	}
+}
+
+void
+firewire_ifattach(struct ifnet *ifp, struct fw_hwaddr *llc)
+{
+	struct fw_com *fc = IFP2FWC(ifp);
+	struct ifaddr *ifa;
+	struct sockaddr_dl *sdl;
+	static const char* speeds[] = {
+		"S100", "S200", "S400", "S800",
+		"S1600", "S3200"
+	};
+
+	fc->fc_speed = llc->sspd;
+	STAILQ_INIT(&fc->fc_frags);
+
+	ifp->if_addrlen = sizeof(struct fw_hwaddr);
+	ifp->if_hdrlen = 0;
+	if_attach(ifp);
+	ifp->if_mtu = 1500;	/* XXX */
+	ifp->if_output = firewire_output;
+	ifp->if_resolvemulti = firewire_resolvemulti;
+	ifp->if_broadcastaddr = (u_char *) &firewire_broadcastaddr;
+
+	ifa = ifp->if_addr;
+	KASSERT(ifa != NULL, ("%s: no lladdr!\n", __func__));
+	sdl = (struct sockaddr_dl *)ifa->ifa_addr;
+	sdl->sdl_type = IFT_IEEE1394;
+	sdl->sdl_alen = ifp->if_addrlen;
+	bcopy(llc, LLADDR(sdl), ifp->if_addrlen);
+
+	bpfattach(ifp, DLT_APPLE_IP_OVER_IEEE1394,
+	    sizeof(struct fw_hwaddr));
+
+	if_printf(ifp, "Firewire address: %8D @ 0x%04x%08x, %s, maxrec %d\n",
+	    (uint8_t *) &llc->sender_unique_ID_hi, ":",
+	    ntohs(llc->sender_unicast_FIFO_hi),
+	    ntohl(llc->sender_unicast_FIFO_lo),
+	    speeds[llc->sspd],
+	    (2 << llc->sender_max_rec));
+}
+
+void
+firewire_ifdetach(struct ifnet *ifp)
+{
+	bpfdetach(ifp);
+	if_detach(ifp);
+}
+
+void
+firewire_busreset(struct ifnet *ifp)
+{
+	struct fw_com *fc = IFP2FWC(ifp);
+	struct fw_reass *r;
+	struct mbuf *m;
+
+	/*
+	 * Discard any partial datagrams since the host ids may have changed.
+	 */
+	while ((r = STAILQ_FIRST(&fc->fc_frags))) {
+		STAILQ_REMOVE_HEAD(&fc->fc_frags, fr_link);
+		while (r->fr_frags) {
+			m = r->fr_frags;
+			r->fr_frags = m->m_nextpkt;
+			m_freem(m);
+		}
+		free(r, M_TEMP);
+	}
+}
+
+static void *
+firewire_alloc(u_char type, struct ifnet *ifp)
+{
+	struct fw_com	*fc;
+
+	fc = malloc(sizeof(struct fw_com), M_FWCOM, M_WAITOK | M_ZERO);
+	fc->fc_ifp = ifp;
+
+	return (fc);
+}
+
+static void
+firewire_free(void *com, u_char type)
+{
+
+	free(com, M_FWCOM);
+}
+
+static int
+firewire_modevent(module_t mod, int type, void *data)
+{
+
+	switch (type) {
+	case MOD_LOAD:
+		if_register_com_alloc(IFT_IEEE1394,
+		    firewire_alloc, firewire_free);
+		break;
+	case MOD_UNLOAD:
+		if_deregister_com_alloc(IFT_IEEE1394);
+		break;
+	default:
+		return (EOPNOTSUPP);
+	}
+
+	return (0);
+}
+
+static moduledata_t firewire_mod = {
+	"if_firewire",
+	firewire_modevent,
+	0
+};
+
+DECLARE_MODULE(if_firewire, firewire_mod, SI_SUB_INIT_IF, SI_ORDER_ANY);
+MODULE_VERSION(if_firewire, 1);