bcf11e8d00
and used in a large number of files, but also because an increasing number of incorrect uses of MAC calls were sneaking in due to copy-and-paste of MAC-aware code without the associated opt_mac.h include. Discussed with: pjd
828 lines
19 KiB
C
828 lines
19 KiB
C
/*-
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* Copyright (c) 1998, Larry Lile
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* All rights reserved.
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*
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* For latest sources and information on this driver, please
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* go to http://anarchy.stdio.com.
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*
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* Questions, comments or suggestions should be directed to
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* Larry Lile <lile@stdio.com>.
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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 unmodified, this list of conditions, and the following
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* 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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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*/
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/*
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*
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* General ISO 802.5 (Token Ring) support routines
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*
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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 "opt_ipx.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_arp.h>
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#include <net/if_dl.h>
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#include <net/if_llc.h>
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#include <net/if_types.h>
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#include <net/if_llatbl.h>
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#include <net/ethernet.h>
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#include <net/netisr.h>
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#include <net/route.h>
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#include <net/bpf.h>
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#include <net/iso88025.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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#ifdef IPX
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#include <netipx/ipx.h>
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#include <netipx/ipx_if.h>
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#endif
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#include <security/mac/mac_framework.h>
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static const u_char iso88025_broadcastaddr[ISO88025_ADDR_LEN] =
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{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
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static int iso88025_resolvemulti (struct ifnet *, struct sockaddr **,
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struct sockaddr *);
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#define senderr(e) do { error = (e); goto bad; } while (0)
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/*
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* Perform common duties while attaching to interface list
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*/
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void
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iso88025_ifattach(struct ifnet *ifp, const u_int8_t *lla, int bpf)
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{
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struct ifaddr *ifa;
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struct sockaddr_dl *sdl;
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ifa = NULL;
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ifp->if_type = IFT_ISO88025;
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ifp->if_addrlen = ISO88025_ADDR_LEN;
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ifp->if_hdrlen = ISO88025_HDR_LEN;
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if_attach(ifp); /* Must be called before additional assignments */
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ifp->if_output = iso88025_output;
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ifp->if_input = iso88025_input;
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ifp->if_resolvemulti = iso88025_resolvemulti;
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ifp->if_broadcastaddr = iso88025_broadcastaddr;
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if (ifp->if_baudrate == 0)
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ifp->if_baudrate = TR_16MBPS; /* 16Mbit should be a safe default */
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if (ifp->if_mtu == 0)
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ifp->if_mtu = ISO88025_DEFAULT_MTU;
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ifa = ifp->if_addr;
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KASSERT(ifa != NULL, ("%s: no lladdr!\n", __func__));
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sdl = (struct sockaddr_dl *)ifa->ifa_addr;
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sdl->sdl_type = IFT_ISO88025;
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sdl->sdl_alen = ifp->if_addrlen;
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bcopy(lla, LLADDR(sdl), ifp->if_addrlen);
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if (bpf)
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bpfattach(ifp, DLT_IEEE802, ISO88025_HDR_LEN);
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return;
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}
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/*
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* Perform common duties while detaching a Token Ring interface
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*/
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void
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iso88025_ifdetach(ifp, bpf)
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struct ifnet *ifp;
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int bpf;
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{
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if (bpf)
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bpfdetach(ifp);
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if_detach(ifp);
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return;
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}
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int
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iso88025_ioctl(struct ifnet *ifp, int command, caddr_t data)
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{
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struct ifaddr *ifa;
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struct ifreq *ifr;
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int error;
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ifa = (struct ifaddr *) data;
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ifr = (struct ifreq *) data;
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error = 0;
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switch (command) {
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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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ifp->if_init(ifp->if_softc); /* before arpwhohas */
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arp_ifinit(ifp, ifa);
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break;
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#endif /* INET */
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#ifdef IPX
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/*
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* XXX - This code is probably wrong
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*/
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case AF_IPX: {
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struct ipx_addr *ina;
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ina = &(IA_SIPX(ifa)->sipx_addr);
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if (ipx_nullhost(*ina))
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ina->x_host = *(union ipx_host *)
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IF_LLADDR(ifp);
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else
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bcopy((caddr_t) ina->x_host.c_host,
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(caddr_t) IF_LLADDR(ifp),
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ISO88025_ADDR_LEN);
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/*
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* Set new address
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*/
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ifp->if_init(ifp->if_softc);
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}
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break;
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#endif /* IPX */
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default:
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ifp->if_init(ifp->if_softc);
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break;
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}
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break;
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case SIOCGIFADDR: {
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struct sockaddr *sa;
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sa = (struct sockaddr *) & ifr->ifr_data;
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bcopy(IF_LLADDR(ifp),
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(caddr_t) sa->sa_data, ISO88025_ADDR_LEN);
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}
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break;
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case SIOCSIFMTU:
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/*
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* Set the interface MTU.
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*/
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if (ifr->ifr_mtu > ISO88025_MAX_MTU) {
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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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}
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break;
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default:
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error = EINVAL; /* XXX netbsd has ENOTTY??? */
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break;
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}
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return (error);
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}
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/*
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* ISO88025 encapsulation
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*/
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int
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iso88025_output(ifp, m, dst, ro)
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struct ifnet *ifp;
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struct mbuf *m;
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struct sockaddr *dst;
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struct route *ro;
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{
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u_int16_t snap_type = 0;
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int loop_copy = 0, error = 0, rif_len = 0;
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u_char edst[ISO88025_ADDR_LEN];
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struct iso88025_header *th;
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struct iso88025_header gen_th;
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struct sockaddr_dl *sdl = NULL;
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struct llentry *lle;
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struct rtentry *rt0 = NULL;
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if (ro != NULL)
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rt0 = ro->ro_rt;
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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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senderr(error);
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#endif
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if (ifp->if_flags & IFF_MONITOR)
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senderr(ENETDOWN);
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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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senderr(ENETDOWN);
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getmicrotime(&ifp->if_lastchange);
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/* Calculate routing info length based on arp table entry */
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/* XXX any better way to do this ? */
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if (rt0 && (sdl = (struct sockaddr_dl *)rt0->rt_gateway))
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if (SDL_ISO88025(sdl)->trld_rcf != 0)
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rif_len = TR_RCF_RIFLEN(SDL_ISO88025(sdl)->trld_rcf);
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/* Generate a generic 802.5 header for the packet */
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gen_th.ac = TR_AC;
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gen_th.fc = TR_LLC_FRAME;
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(void)memcpy((caddr_t)gen_th.iso88025_shost, IF_LLADDR(ifp),
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ISO88025_ADDR_LEN);
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if (rif_len) {
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gen_th.iso88025_shost[0] |= TR_RII;
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if (rif_len > 2) {
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gen_th.rcf = SDL_ISO88025(sdl)->trld_rcf;
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(void)memcpy((caddr_t)gen_th.rd,
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(caddr_t)SDL_ISO88025(sdl)->trld_route,
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rif_len - 2);
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}
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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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error = arpresolve(ifp, rt0, m, dst, edst, &lle);
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if (error)
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return (error == EWOULDBLOCK ? 0 : error);
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snap_type = ETHERTYPE_IP;
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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_IEEE802);
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loop_copy = -1; /* if this is for us, don't do it */
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switch(ntohs(ah->ar_op)) {
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case ARPOP_REVREQUEST:
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case ARPOP_REVREPLY:
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snap_type = ETHERTYPE_REVARP;
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break;
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case ARPOP_REQUEST:
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case ARPOP_REPLY:
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default:
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snap_type = ETHERTYPE_ARP;
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break;
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}
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if (m->m_flags & M_BCAST)
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bcopy(ifp->if_broadcastaddr, edst, ISO88025_ADDR_LEN);
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else
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bcopy(ar_tha(ah), edst, ISO88025_ADDR_LEN);
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}
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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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error = nd6_storelladdr(ifp, m, dst, (u_char *)edst, &lle);
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if (error)
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return (error);
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snap_type = ETHERTYPE_IPV6;
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break;
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#endif /* INET6 */
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#ifdef IPX
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case AF_IPX:
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{
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u_int8_t *cp;
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bcopy((caddr_t)&(satoipx_addr(dst).x_host), (caddr_t)edst,
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ISO88025_ADDR_LEN);
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M_PREPEND(m, 3, M_WAIT);
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m = m_pullup(m, 3);
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if (m == 0)
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senderr(ENOBUFS);
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cp = mtod(m, u_int8_t *);
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*cp++ = ETHERTYPE_IPX_8022;
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*cp++ = ETHERTYPE_IPX_8022;
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*cp++ = LLC_UI;
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}
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break;
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#endif /* IPX */
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|
case AF_UNSPEC:
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|
{
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struct iso88025_sockaddr_data *sd;
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/*
|
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* For AF_UNSPEC sockaddr.sa_data must contain all of the
|
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* mac information needed to send the packet. This allows
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* full mac, llc, and source routing function to be controlled.
|
|
* llc and source routing information must already be in the
|
|
* mbuf provided, ac/fc are set in sa_data. sockaddr.sa_data
|
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* should be an iso88025_sockaddr_data structure see iso88025.h
|
|
*/
|
|
loop_copy = -1;
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sd = (struct iso88025_sockaddr_data *)dst->sa_data;
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gen_th.ac = sd->ac;
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gen_th.fc = sd->fc;
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(void)memcpy((caddr_t)edst, (caddr_t)sd->ether_dhost,
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ISO88025_ADDR_LEN);
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(void)memcpy((caddr_t)gen_th.iso88025_shost,
|
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(caddr_t)sd->ether_shost, ISO88025_ADDR_LEN);
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rif_len = 0;
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break;
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|
}
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|
default:
|
|
if_printf(ifp, "can't handle af%d\n", dst->sa_family);
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senderr(EAFNOSUPPORT);
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break;
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}
|
|
|
|
/*
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* Add LLC header.
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*/
|
|
if (snap_type != 0) {
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struct llc *l;
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M_PREPEND(m, LLC_SNAPFRAMELEN, M_DONTWAIT);
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if (m == 0)
|
|
senderr(ENOBUFS);
|
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l = mtod(m, struct llc *);
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l->llc_control = LLC_UI;
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l->llc_dsap = l->llc_ssap = LLC_SNAP_LSAP;
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l->llc_snap.org_code[0] =
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l->llc_snap.org_code[1] =
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l->llc_snap.org_code[2] = 0;
|
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l->llc_snap.ether_type = htons(snap_type);
|
|
}
|
|
|
|
/*
|
|
* Add local net header. If no space in first mbuf,
|
|
* allocate another.
|
|
*/
|
|
M_PREPEND(m, ISO88025_HDR_LEN + rif_len, M_DONTWAIT);
|
|
if (m == 0)
|
|
senderr(ENOBUFS);
|
|
th = mtod(m, struct iso88025_header *);
|
|
bcopy((caddr_t)edst, (caddr_t)&gen_th.iso88025_dhost, ISO88025_ADDR_LEN);
|
|
|
|
/* Copy as much of the generic header as is needed into the mbuf */
|
|
memcpy(th, &gen_th, ISO88025_HDR_LEN + rif_len);
|
|
|
|
/*
|
|
* If a simplex interface, and the packet is being sent to our
|
|
* Ethernet address or a broadcast address, loopback a copy.
|
|
* XXX To make a simplex device behave exactly like a duplex
|
|
* device, we should copy in the case of sending to our own
|
|
* ethernet address (thus letting the original actually appear
|
|
* on the wire). However, we don't do that here for security
|
|
* reasons and compatibility with the original behavior.
|
|
*/
|
|
if ((ifp->if_flags & IFF_SIMPLEX) && (loop_copy != -1)) {
|
|
if ((m->m_flags & M_BCAST) || (loop_copy > 0)) {
|
|
struct mbuf *n;
|
|
n = m_copy(m, 0, (int)M_COPYALL);
|
|
(void) if_simloop(ifp, n, dst->sa_family,
|
|
ISO88025_HDR_LEN);
|
|
} else if (bcmp(th->iso88025_dhost, th->iso88025_shost,
|
|
ETHER_ADDR_LEN) == 0) {
|
|
(void) if_simloop(ifp, m, dst->sa_family,
|
|
ISO88025_HDR_LEN);
|
|
return(0); /* XXX */
|
|
}
|
|
}
|
|
|
|
IFQ_HANDOFF_ADJ(ifp, m, ISO88025_HDR_LEN + LLC_SNAPFRAMELEN, error);
|
|
if (error) {
|
|
printf("iso88025_output: packet dropped QFULL.\n");
|
|
ifp->if_oerrors++;
|
|
}
|
|
return (error);
|
|
|
|
bad:
|
|
ifp->if_oerrors++;
|
|
if (m)
|
|
m_freem(m);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* ISO 88025 de-encapsulation
|
|
*/
|
|
void
|
|
iso88025_input(ifp, m)
|
|
struct ifnet *ifp;
|
|
struct mbuf *m;
|
|
{
|
|
struct iso88025_header *th;
|
|
struct llc *l;
|
|
int isr;
|
|
int mac_hdr_len;
|
|
|
|
/*
|
|
* Do consistency checks to verify assumptions
|
|
* made by code past this point.
|
|
*/
|
|
if ((m->m_flags & M_PKTHDR) == 0) {
|
|
if_printf(ifp, "discard frame w/o packet header\n");
|
|
ifp->if_ierrors++;
|
|
m_freem(m);
|
|
return;
|
|
}
|
|
if (m->m_pkthdr.rcvif == NULL) {
|
|
if_printf(ifp, "discard frame w/o interface pointer\n");
|
|
ifp->if_ierrors++;
|
|
m_freem(m);
|
|
return;
|
|
}
|
|
|
|
m = m_pullup(m, ISO88025_HDR_LEN);
|
|
if (m == NULL) {
|
|
ifp->if_ierrors++;
|
|
goto dropanyway;
|
|
}
|
|
th = mtod(m, struct iso88025_header *);
|
|
m->m_pkthdr.header = (void *)th;
|
|
|
|
/*
|
|
* Discard packet if interface is not up.
|
|
*/
|
|
if (!((ifp->if_flags & IFF_UP) &&
|
|
(ifp->if_drv_flags & IFF_DRV_RUNNING)))
|
|
goto dropanyway;
|
|
|
|
/*
|
|
* Give bpf a chance at the packet.
|
|
*/
|
|
BPF_MTAP(ifp, m);
|
|
|
|
/*
|
|
* Interface marked for monitoring; discard packet.
|
|
*/
|
|
if (ifp->if_flags & IFF_MONITOR) {
|
|
m_freem(m);
|
|
return;
|
|
}
|
|
|
|
#ifdef MAC
|
|
mac_ifnet_create_mbuf(ifp, m);
|
|
#endif
|
|
|
|
/*
|
|
* Update interface statistics.
|
|
*/
|
|
ifp->if_ibytes += m->m_pkthdr.len;
|
|
getmicrotime(&ifp->if_lastchange);
|
|
|
|
/*
|
|
* Discard non local unicast packets when interface
|
|
* is in promiscuous mode.
|
|
*/
|
|
if ((ifp->if_flags & IFF_PROMISC) &&
|
|
((th->iso88025_dhost[0] & 1) == 0) &&
|
|
(bcmp(IF_LLADDR(ifp), (caddr_t) th->iso88025_dhost,
|
|
ISO88025_ADDR_LEN) != 0))
|
|
goto dropanyway;
|
|
|
|
/*
|
|
* Set mbuf flags for bcast/mcast.
|
|
*/
|
|
if (th->iso88025_dhost[0] & 1) {
|
|
if (bcmp(iso88025_broadcastaddr, th->iso88025_dhost,
|
|
ISO88025_ADDR_LEN) == 0)
|
|
m->m_flags |= M_BCAST;
|
|
else
|
|
m->m_flags |= M_MCAST;
|
|
ifp->if_imcasts++;
|
|
}
|
|
|
|
mac_hdr_len = ISO88025_HDR_LEN;
|
|
/* Check for source routing info */
|
|
if (th->iso88025_shost[0] & TR_RII)
|
|
mac_hdr_len += TR_RCF_RIFLEN(th->rcf);
|
|
|
|
/* Strip off ISO88025 header. */
|
|
m_adj(m, mac_hdr_len);
|
|
|
|
m = m_pullup(m, LLC_SNAPFRAMELEN);
|
|
if (m == 0) {
|
|
ifp->if_ierrors++;
|
|
goto dropanyway;
|
|
}
|
|
l = mtod(m, struct llc *);
|
|
|
|
switch (l->llc_dsap) {
|
|
#ifdef IPX
|
|
case ETHERTYPE_IPX_8022: /* Thanks a bunch Novell */
|
|
if ((l->llc_control != LLC_UI) ||
|
|
(l->llc_ssap != ETHERTYPE_IPX_8022)) {
|
|
ifp->if_noproto++;
|
|
goto dropanyway;
|
|
}
|
|
|
|
th->iso88025_shost[0] &= ~(TR_RII);
|
|
m_adj(m, 3);
|
|
isr = NETISR_IPX;
|
|
break;
|
|
#endif /* IPX */
|
|
case LLC_SNAP_LSAP: {
|
|
u_int16_t type;
|
|
if ((l->llc_control != LLC_UI) ||
|
|
(l->llc_ssap != LLC_SNAP_LSAP)) {
|
|
ifp->if_noproto++;
|
|
goto dropanyway;
|
|
}
|
|
|
|
if (l->llc_snap.org_code[0] != 0 ||
|
|
l->llc_snap.org_code[1] != 0 ||
|
|
l->llc_snap.org_code[2] != 0) {
|
|
ifp->if_noproto++;
|
|
goto dropanyway;
|
|
}
|
|
|
|
type = ntohs(l->llc_snap.ether_type);
|
|
m_adj(m, LLC_SNAPFRAMELEN);
|
|
switch (type) {
|
|
#ifdef INET
|
|
case ETHERTYPE_IP:
|
|
th->iso88025_shost[0] &= ~(TR_RII);
|
|
if ((m = ip_fastforward(m)) == NULL)
|
|
return;
|
|
isr = NETISR_IP;
|
|
break;
|
|
|
|
case ETHERTYPE_ARP:
|
|
if (ifp->if_flags & IFF_NOARP)
|
|
goto dropanyway;
|
|
isr = NETISR_ARP;
|
|
break;
|
|
#endif /* INET */
|
|
#ifdef IPX_SNAP /* XXX: Not supported! */
|
|
case ETHERTYPE_IPX:
|
|
th->iso88025_shost[0] &= ~(TR_RII);
|
|
isr = NETISR_IPX;
|
|
break;
|
|
#endif /* IPX_SNAP */
|
|
#ifdef INET6
|
|
case ETHERTYPE_IPV6:
|
|
th->iso88025_shost[0] &= ~(TR_RII);
|
|
isr = NETISR_IPV6;
|
|
break;
|
|
#endif /* INET6 */
|
|
default:
|
|
printf("iso88025_input: unexpected llc_snap ether_type 0x%02x\n", type);
|
|
ifp->if_noproto++;
|
|
goto dropanyway;
|
|
}
|
|
break;
|
|
}
|
|
#ifdef ISO
|
|
case LLC_ISO_LSAP:
|
|
switch (l->llc_control) {
|
|
case LLC_UI:
|
|
ifp->if_noproto++;
|
|
goto dropanyway;
|
|
break;
|
|
case LLC_XID:
|
|
case LLC_XID_P:
|
|
if(m->m_len < ISO88025_ADDR_LEN)
|
|
goto dropanyway;
|
|
l->llc_window = 0;
|
|
l->llc_fid = 9;
|
|
l->llc_class = 1;
|
|
l->llc_dsap = l->llc_ssap = 0;
|
|
/* Fall through to */
|
|
case LLC_TEST:
|
|
case LLC_TEST_P:
|
|
{
|
|
struct sockaddr sa;
|
|
struct arpcom *ac;
|
|
struct iso88025_sockaddr_data *th2;
|
|
int i;
|
|
u_char c;
|
|
|
|
c = l->llc_dsap;
|
|
|
|
if (th->iso88025_shost[0] & TR_RII) { /* XXX */
|
|
printf("iso88025_input: dropping source routed LLC_TEST\n");
|
|
goto dropanyway;
|
|
}
|
|
l->llc_dsap = l->llc_ssap;
|
|
l->llc_ssap = c;
|
|
if (m->m_flags & (M_BCAST | M_MCAST))
|
|
bcopy((caddr_t)IF_LLADDR(ifp),
|
|
(caddr_t)th->iso88025_dhost,
|
|
ISO88025_ADDR_LEN);
|
|
sa.sa_family = AF_UNSPEC;
|
|
sa.sa_len = sizeof(sa);
|
|
th2 = (struct iso88025_sockaddr_data *)sa.sa_data;
|
|
for (i = 0; i < ISO88025_ADDR_LEN; i++) {
|
|
th2->ether_shost[i] = c = th->iso88025_dhost[i];
|
|
th2->ether_dhost[i] = th->iso88025_dhost[i] =
|
|
th->iso88025_shost[i];
|
|
th->iso88025_shost[i] = c;
|
|
}
|
|
th2->ac = TR_AC;
|
|
th2->fc = TR_LLC_FRAME;
|
|
ifp->if_output(ifp, m, &sa, NULL);
|
|
return;
|
|
}
|
|
default:
|
|
printf("iso88025_input: unexpected llc control 0x%02x\n", l->llc_control);
|
|
ifp->if_noproto++;
|
|
goto dropanyway;
|
|
break;
|
|
}
|
|
break;
|
|
#endif /* ISO */
|
|
default:
|
|
printf("iso88025_input: unknown dsap 0x%x\n", l->llc_dsap);
|
|
ifp->if_noproto++;
|
|
goto dropanyway;
|
|
break;
|
|
}
|
|
|
|
netisr_dispatch(isr, m);
|
|
return;
|
|
|
|
dropanyway:
|
|
ifp->if_iqdrops++;
|
|
if (m)
|
|
m_freem(m);
|
|
return;
|
|
}
|
|
|
|
static int
|
|
iso88025_resolvemulti (ifp, llsa, sa)
|
|
struct ifnet *ifp;
|
|
struct sockaddr **llsa;
|
|
struct sockaddr *sa;
|
|
{
|
|
struct sockaddr_dl *sdl;
|
|
#ifdef INET
|
|
struct sockaddr_in *sin;
|
|
#endif
|
|
#ifdef INET6
|
|
struct sockaddr_in6 *sin6;
|
|
#endif
|
|
u_char *e_addr;
|
|
|
|
switch(sa->sa_family) {
|
|
case AF_LINK:
|
|
/*
|
|
* No mapping needed. Just check that it's a valid MC address.
|
|
*/
|
|
sdl = (struct sockaddr_dl *)sa;
|
|
e_addr = LLADDR(sdl);
|
|
if ((e_addr[0] & 1) != 1) {
|
|
return (EADDRNOTAVAIL);
|
|
}
|
|
*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);
|
|
}
|
|
sdl = malloc(sizeof *sdl, M_IFMADDR,
|
|
M_NOWAIT|M_ZERO);
|
|
if (sdl == NULL)
|
|
return (ENOMEM);
|
|
sdl->sdl_len = sizeof *sdl;
|
|
sdl->sdl_family = AF_LINK;
|
|
sdl->sdl_index = ifp->if_index;
|
|
sdl->sdl_type = IFT_ISO88025;
|
|
sdl->sdl_alen = ISO88025_ADDR_LEN;
|
|
e_addr = LLADDR(sdl);
|
|
ETHER_MAP_IP_MULTICAST(&sin->sin_addr, e_addr);
|
|
*llsa = (struct sockaddr *)sdl;
|
|
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);
|
|
}
|
|
sdl = malloc(sizeof *sdl, M_IFMADDR,
|
|
M_NOWAIT|M_ZERO);
|
|
if (sdl == NULL)
|
|
return (ENOMEM);
|
|
sdl->sdl_len = sizeof *sdl;
|
|
sdl->sdl_family = AF_LINK;
|
|
sdl->sdl_index = ifp->if_index;
|
|
sdl->sdl_type = IFT_ISO88025;
|
|
sdl->sdl_alen = ISO88025_ADDR_LEN;
|
|
e_addr = LLADDR(sdl);
|
|
ETHER_MAP_IPV6_MULTICAST(&sin6->sin6_addr, e_addr);
|
|
*llsa = (struct sockaddr *)sdl;
|
|
return (0);
|
|
#endif
|
|
|
|
default:
|
|
/*
|
|
* Well, the text isn't quite right, but it's the name
|
|
* that counts...
|
|
*/
|
|
return (EAFNOSUPPORT);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
MALLOC_DEFINE(M_ISO88025, "arpcom", "802.5 interface internals");
|
|
|
|
static void*
|
|
iso88025_alloc(u_char type, struct ifnet *ifp)
|
|
{
|
|
struct arpcom *ac;
|
|
|
|
ac = malloc(sizeof(struct arpcom), M_ISO88025, M_WAITOK | M_ZERO);
|
|
ac->ac_ifp = ifp;
|
|
|
|
return (ac);
|
|
}
|
|
|
|
static void
|
|
iso88025_free(void *com, u_char type)
|
|
{
|
|
|
|
free(com, M_ISO88025);
|
|
}
|
|
|
|
static int
|
|
iso88025_modevent(module_t mod, int type, void *data)
|
|
{
|
|
|
|
switch (type) {
|
|
case MOD_LOAD:
|
|
if_register_com_alloc(IFT_ISO88025, iso88025_alloc,
|
|
iso88025_free);
|
|
break;
|
|
case MOD_UNLOAD:
|
|
if_deregister_com_alloc(IFT_ISO88025);
|
|
break;
|
|
default:
|
|
return EOPNOTSUPP;
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static moduledata_t iso88025_mod = {
|
|
"iso88025",
|
|
iso88025_modevent,
|
|
0
|
|
};
|
|
|
|
DECLARE_MODULE(iso88025, iso88025_mod, SI_SUB_PSEUDO, SI_ORDER_ANY);
|
|
MODULE_VERSION(iso88025, 1);
|