Hide the ifnet structure definition, no user serviceable parts inside, it's a netstack implementation detail. Include it temporarily in <net/if_var.h> until all drivers are updated to use the accessors exclusively. Reviewed by: glebius Sponsored by: Juniper Networks, Inc. Differential Revision: https://reviews.freebsd.org/D38046
875 lines
20 KiB
C
875 lines
20 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 2004 Doug Rabson
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* Copyright (c) 1982, 1989, 1993
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* The Regents of the University of California. 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. 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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* $FreeBSD$
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*/
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#include "opt_inet.h"
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#include "opt_inet6.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/mbuf.h>
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#include <sys/module.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_var.h>
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#include <net/if_private.h>
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#include <net/netisr.h>
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#include <net/route.h>
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#include <net/if_llc.h>
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#include <net/if_dl.h>
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#include <net/if_types.h>
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#include <net/bpf.h>
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#include <net/firewire.h>
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#include <net/if_llatbl.h>
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#if defined(INET) || defined(INET6)
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#include <netinet/in.h>
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#include <netinet/in_var.h>
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#include <netinet/if_ether.h>
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#endif
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#ifdef INET6
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#include <netinet6/nd6.h>
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#endif
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#include <security/mac/mac_framework.h>
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static MALLOC_DEFINE(M_FWCOM, "fw_com", "firewire interface internals");
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struct fw_hwaddr firewire_broadcastaddr = {
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0xffffffff,
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0xffffffff,
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0xff,
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0xff,
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0xffff,
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0xffffffff
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};
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static int
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firewire_output(struct ifnet *ifp, struct mbuf *m, const struct sockaddr *dst,
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struct route *ro)
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{
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struct fw_com *fc = IFP2FWC(ifp);
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int error, type;
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struct m_tag *mtag;
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union fw_encap *enc;
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struct fw_hwaddr *destfw;
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uint8_t speed;
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uint16_t psize, fsize, dsize;
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struct mbuf *mtail;
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int unicast, dgl, foff;
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static int next_dgl;
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#if defined(INET) || defined(INET6)
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int is_gw = 0;
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#endif
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int af = RO_GET_FAMILY(ro, dst);
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#ifdef MAC
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error = mac_ifnet_check_transmit(ifp, m);
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if (error)
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goto bad;
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#endif
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if (!((ifp->if_flags & IFF_UP) &&
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(ifp->if_drv_flags & IFF_DRV_RUNNING))) {
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error = ENETDOWN;
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goto bad;
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}
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#if defined(INET) || defined(INET6)
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if (ro != NULL)
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is_gw = (ro->ro_flags & RT_HAS_GW) != 0;
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#endif
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/*
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* For unicast, we make a tag to store the lladdr of the
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* destination. This might not be the first time we have seen
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* the packet (for instance, the arp code might be trying to
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* re-send it after receiving an arp reply) so we only
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* allocate a tag if there isn't one there already. For
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* multicast, we will eventually use a different tag to store
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* the channel number.
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*/
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unicast = !(m->m_flags & (M_BCAST | M_MCAST));
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if (unicast) {
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mtag = m_tag_locate(m, MTAG_FIREWIRE, MTAG_FIREWIRE_HWADDR, NULL);
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if (!mtag) {
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mtag = m_tag_alloc(MTAG_FIREWIRE, MTAG_FIREWIRE_HWADDR,
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sizeof (struct fw_hwaddr), M_NOWAIT);
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if (!mtag) {
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error = ENOMEM;
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goto bad;
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}
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m_tag_prepend(m, mtag);
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}
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destfw = (struct fw_hwaddr *)(mtag + 1);
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} else {
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destfw = NULL;
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}
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switch (af) {
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#ifdef INET
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case AF_INET:
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type = ETHERTYPE_IP;
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break;
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case AF_ARP:
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type = ETHERTYPE_ARP;
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break;
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#endif
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#ifdef INET6
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case AF_INET6:
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type = ETHERTYPE_IPV6;
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break;
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#endif
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default:
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if_printf(ifp, "can't handle af%d\n", af);
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error = EAFNOSUPPORT;
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goto bad;
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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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/*
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* Only bother with arp for unicast. Allocation of
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* channels etc. for firewire is quite different and
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* doesn't fit into the arp model.
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*/
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if (unicast) {
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error = arpresolve(ifp, is_gw, m, dst,
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(u_char *) destfw, NULL, NULL);
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if (error)
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return (error == EWOULDBLOCK ? 0 : error);
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}
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break;
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case AF_ARP:
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{
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struct arphdr *ah;
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ah = mtod(m, struct arphdr *);
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ah->ar_hrd = htons(ARPHRD_IEEE1394);
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if (unicast)
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*destfw = *(struct fw_hwaddr *) ar_tha(ah);
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/*
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* The standard arp code leaves a hole for the target
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* hardware address which we need to close up.
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*/
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bcopy(ar_tpa(ah), ar_tha(ah), ah->ar_pln);
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m_adj(m, -ah->ar_hln);
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break;
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}
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#endif
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#ifdef INET6
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case AF_INET6:
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if (unicast) {
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error = nd6_resolve(fc->fc_ifp, LLE_SF(af, is_gw), m,
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dst, (u_char *) destfw, NULL, NULL);
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if (error)
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return (error == EWOULDBLOCK ? 0 : error);
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}
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break;
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#endif
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default:
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if_printf(ifp, "can't handle af%d\n", dst->sa_family);
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error = EAFNOSUPPORT;
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goto bad;
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}
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/*
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* Let BPF tap off a copy before we encapsulate.
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*/
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if (bpf_peers_present(ifp->if_bpf)) {
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struct fw_bpfhdr h;
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if (unicast)
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bcopy(destfw, h.firewire_dhost, 8);
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else
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bcopy(&firewire_broadcastaddr, h.firewire_dhost, 8);
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bcopy(&fc->fc_hwaddr, h.firewire_shost, 8);
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h.firewire_type = htons(type);
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bpf_mtap2(ifp->if_bpf, &h, sizeof(h), m);
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}
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/*
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* Punt on MCAP for now and send all multicast packets on the
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* broadcast channel.
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*/
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if (m->m_flags & M_MCAST)
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m->m_flags |= M_BCAST;
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/*
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* Figure out what speed to use and what the largest supported
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* packet size is. For unicast, this is the minimum of what we
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* can speak and what they can hear. For broadcast, lets be
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* conservative and use S100. We could possibly improve that
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* by examining the bus manager's speed map or similar. We
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* also reduce the packet size for broadcast to account for
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* the GASP header.
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*/
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if (unicast) {
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speed = min(fc->fc_speed, destfw->sspd);
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psize = min(512 << speed, 2 << destfw->sender_max_rec);
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} else {
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speed = 0;
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psize = 512 - 2*sizeof(uint32_t);
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}
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/*
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* Next, we encapsulate, possibly fragmenting the original
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* datagram if it won't fit into a single packet.
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*/
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if (m->m_pkthdr.len <= psize - sizeof(uint32_t)) {
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/*
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* No fragmentation is necessary.
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*/
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M_PREPEND(m, sizeof(uint32_t), M_NOWAIT);
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if (!m) {
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error = ENOBUFS;
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goto bad;
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}
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enc = mtod(m, union fw_encap *);
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enc->unfrag.ether_type = type;
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enc->unfrag.lf = FW_ENCAP_UNFRAG;
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enc->unfrag.reserved = 0;
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/*
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* Byte swap the encapsulation header manually.
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*/
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enc->ul[0] = htonl(enc->ul[0]);
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error = (ifp->if_transmit)(ifp, m);
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return (error);
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} else {
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/*
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* Fragment the datagram, making sure to leave enough
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* space for the encapsulation header in each packet.
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*/
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fsize = psize - 2*sizeof(uint32_t);
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dgl = next_dgl++;
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dsize = m->m_pkthdr.len;
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foff = 0;
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while (m) {
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if (m->m_pkthdr.len > fsize) {
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/*
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* Split off the tail segment from the
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* datagram, copying our tags over.
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*/
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mtail = m_split(m, fsize, M_NOWAIT);
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m_tag_copy_chain(mtail, m, M_NOWAIT);
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} else {
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mtail = NULL;
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}
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/*
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* Add our encapsulation header to this
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* fragment and hand it off to the link.
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*/
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M_PREPEND(m, 2*sizeof(uint32_t), M_NOWAIT);
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if (!m) {
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error = ENOBUFS;
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goto bad;
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}
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enc = mtod(m, union fw_encap *);
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if (foff == 0) {
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enc->firstfrag.lf = FW_ENCAP_FIRST;
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enc->firstfrag.reserved1 = 0;
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enc->firstfrag.reserved2 = 0;
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enc->firstfrag.datagram_size = dsize - 1;
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enc->firstfrag.ether_type = type;
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enc->firstfrag.dgl = dgl;
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} else {
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if (mtail)
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enc->nextfrag.lf = FW_ENCAP_NEXT;
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else
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enc->nextfrag.lf = FW_ENCAP_LAST;
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enc->nextfrag.reserved1 = 0;
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enc->nextfrag.reserved2 = 0;
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enc->nextfrag.reserved3 = 0;
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enc->nextfrag.datagram_size = dsize - 1;
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enc->nextfrag.fragment_offset = foff;
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enc->nextfrag.dgl = dgl;
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}
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foff += m->m_pkthdr.len - 2*sizeof(uint32_t);
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/*
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* Byte swap the encapsulation header manually.
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*/
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enc->ul[0] = htonl(enc->ul[0]);
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enc->ul[1] = htonl(enc->ul[1]);
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error = (ifp->if_transmit)(ifp, m);
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if (error) {
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if (mtail)
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m_freem(mtail);
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return (ENOBUFS);
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}
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m = mtail;
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}
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return (0);
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}
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bad:
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if (m)
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m_freem(m);
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return (error);
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}
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static struct mbuf *
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firewire_input_fragment(struct fw_com *fc, struct mbuf *m, int src)
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{
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union fw_encap *enc;
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struct fw_reass *r;
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struct mbuf *mf, *mprev;
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int dsize;
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int fstart, fend, start, end, islast;
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uint32_t id;
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/*
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* Find an existing reassembly buffer or create a new one.
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*/
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enc = mtod(m, union fw_encap *);
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id = enc->firstfrag.dgl | (src << 16);
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STAILQ_FOREACH(r, &fc->fc_frags, fr_link)
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if (r->fr_id == id)
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break;
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if (!r) {
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r = malloc(sizeof(struct fw_reass), M_TEMP, M_NOWAIT);
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if (!r) {
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m_freem(m);
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return 0;
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}
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r->fr_id = id;
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r->fr_frags = 0;
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STAILQ_INSERT_HEAD(&fc->fc_frags, r, fr_link);
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}
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/*
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* If this fragment overlaps any other fragment, we must discard
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* the partial reassembly and start again.
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*/
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if (enc->firstfrag.lf == FW_ENCAP_FIRST)
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fstart = 0;
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else
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fstart = enc->nextfrag.fragment_offset;
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fend = fstart + m->m_pkthdr.len - 2*sizeof(uint32_t);
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dsize = enc->nextfrag.datagram_size;
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islast = (enc->nextfrag.lf == FW_ENCAP_LAST);
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for (mf = r->fr_frags; mf; mf = mf->m_nextpkt) {
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enc = mtod(mf, union fw_encap *);
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if (enc->nextfrag.datagram_size != dsize) {
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/*
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* This fragment must be from a different
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* packet.
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*/
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goto bad;
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}
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if (enc->firstfrag.lf == FW_ENCAP_FIRST)
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start = 0;
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else
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start = enc->nextfrag.fragment_offset;
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end = start + mf->m_pkthdr.len - 2*sizeof(uint32_t);
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if ((fstart < end && fend > start) ||
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(islast && enc->nextfrag.lf == FW_ENCAP_LAST)) {
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/*
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* Overlap - discard reassembly buffer and start
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* again with this fragment.
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*/
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goto bad;
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}
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}
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/*
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* Find where to put this fragment in the list.
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*/
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for (mf = r->fr_frags, mprev = NULL; mf;
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mprev = mf, mf = mf->m_nextpkt) {
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enc = mtod(mf, union fw_encap *);
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if (enc->firstfrag.lf == FW_ENCAP_FIRST)
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start = 0;
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else
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start = enc->nextfrag.fragment_offset;
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if (start >= fend)
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break;
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}
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/*
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* If this is a last fragment and we are not adding at the end
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* of the list, discard the buffer.
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*/
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if (islast && mprev && mprev->m_nextpkt)
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goto bad;
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if (mprev) {
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m->m_nextpkt = mprev->m_nextpkt;
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mprev->m_nextpkt = m;
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/*
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* Coalesce forwards and see if we can make a whole
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* datagram.
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*/
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enc = mtod(mprev, union fw_encap *);
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if (enc->firstfrag.lf == FW_ENCAP_FIRST)
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start = 0;
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else
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start = enc->nextfrag.fragment_offset;
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end = start + mprev->m_pkthdr.len - 2*sizeof(uint32_t);
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while (end == fstart) {
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/*
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* Strip off the encap header from m and
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* append it to mprev, freeing m.
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*/
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m_adj(m, 2*sizeof(uint32_t));
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mprev->m_nextpkt = m->m_nextpkt;
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mprev->m_pkthdr.len += m->m_pkthdr.len;
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m_cat(mprev, m);
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if (mprev->m_pkthdr.len == dsize + 1 + 2*sizeof(uint32_t)) {
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/*
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* We have assembled a complete packet
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* we must be finished. Make sure we have
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* merged the whole chain.
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*/
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STAILQ_REMOVE(&fc->fc_frags, r, fw_reass, fr_link);
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free(r, M_TEMP);
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m = mprev->m_nextpkt;
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while (m) {
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mf = m->m_nextpkt;
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m_freem(m);
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m = mf;
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}
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mprev->m_nextpkt = NULL;
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return (mprev);
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}
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/*
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* See if we can continue merging forwards.
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*/
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end = fend;
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m = mprev->m_nextpkt;
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if (m) {
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enc = mtod(m, union fw_encap *);
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if (enc->firstfrag.lf == FW_ENCAP_FIRST)
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fstart = 0;
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else
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fstart = enc->nextfrag.fragment_offset;
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fend = fstart + m->m_pkthdr.len
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- 2*sizeof(uint32_t);
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} else {
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break;
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}
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}
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} else {
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m->m_nextpkt = 0;
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r->fr_frags = m;
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}
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return (0);
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bad:
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while (r->fr_frags) {
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mf = r->fr_frags;
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r->fr_frags = mf->m_nextpkt;
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m_freem(mf);
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}
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m->m_nextpkt = 0;
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r->fr_frags = m;
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return (0);
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|
}
|
|
|
|
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");
|
|
if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
|
|
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;
|
|
}
|
|
|
|
if_inc_counter(ifp, IFCOUNTER_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))
|
|
if_inc_counter(ifp, IFCOUNTER_IMCASTS, 1);
|
|
|
|
switch (type) {
|
|
#ifdef INET
|
|
case ETHERTYPE_IP:
|
|
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;
|
|
}
|
|
|
|
M_SETFIB(m, ifp->if_fib);
|
|
CURVNET_SET_QUIET(ifp->if_vnet);
|
|
netisr_dispatch(isr, m);
|
|
CURVNET_RESTORE();
|
|
}
|
|
|
|
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:
|
|
bcopy(&IFP2FWC(ifp)->fc_hwaddr, &ifr->ifr_addr.sa_data[0],
|
|
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 = NULL;
|
|
return 0;
|
|
|
|
#ifdef INET
|
|
case AF_INET:
|
|
sin = (struct sockaddr_in *)sa;
|
|
if (!IN_MULTICAST(ntohl(sin->sin_addr.s_addr)))
|
|
return EADDRNOTAVAIL;
|
|
*llsa = NULL;
|
|
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 = NULL;
|
|
return 0;
|
|
}
|
|
if (!IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr))
|
|
return EADDRNOTAVAIL;
|
|
*llsa = NULL;
|
|
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);
|