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ae5a19be8e
code. The reverts the API change which made the <if>_clone_destory() functions return an int instead of void bringing us into closer alignment with NetBSD. Reviewed by: net (a long time ago)
825 lines
19 KiB
C
825 lines
19 KiB
C
/* $FreeBSD$ */
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/* $KAME: if_gif.c,v 1.87 2001/10/19 08:50:27 itojun Exp $ */
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/*
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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* 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 project 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 PROJECT 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 PROJECT 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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#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/socket.h>
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#include <sys/sockio.h>
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#include <sys/errno.h>
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#include <sys/time.h>
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#include <sys/sysctl.h>
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#include <sys/syslog.h>
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#include <sys/protosw.h>
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#include <sys/conf.h>
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#include <machine/cpu.h>
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#include <net/if.h>
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#include <net/if_types.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 <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#ifdef INET
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#include <netinet/in_var.h>
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#include <netinet/in_gif.h>
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#include <netinet/ip_var.h>
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#endif /* INET */
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#ifdef INET6
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#ifndef INET
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#include <netinet/in.h>
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#endif
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#include <netinet6/in6_var.h>
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#include <netinet/ip6.h>
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#include <netinet6/ip6_var.h>
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#include <netinet6/in6_gif.h>
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#include <netinet6/ip6protosw.h>
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#endif /* INET6 */
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#include <netinet/ip_encap.h>
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#include <net/if_gif.h>
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#include <net/net_osdep.h>
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#define GIFNAME "gif"
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static MALLOC_DEFINE(M_GIF, "gif", "Generic Tunnel Interface");
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static LIST_HEAD(, gif_softc) gif_softc_list;
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void (*ng_gif_input_p)(struct ifnet *ifp, struct mbuf **mp, int af);
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void (*ng_gif_input_orphan_p)(struct ifnet *ifp, struct mbuf *m, int af);
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void (*ng_gif_attach_p)(struct ifnet *ifp);
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void (*ng_gif_detach_p)(struct ifnet *ifp);
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int gif_clone_create(struct if_clone *, int);
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void gif_clone_destroy(struct ifnet *);
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struct if_clone gif_cloner = IF_CLONE_INITIALIZER("gif",
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gif_clone_create, gif_clone_destroy, 0, IF_MAXUNIT);
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static int gifmodevent(module_t, int, void *);
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void gif_delete_tunnel(struct gif_softc *);
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static int gif_encapcheck(const struct mbuf *, int, int, void *);
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#ifdef INET
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extern struct domain inetdomain;
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struct protosw in_gif_protosw =
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{ SOCK_RAW, &inetdomain, 0/*IPPROTO_IPV[46]*/, PR_ATOMIC|PR_ADDR,
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in_gif_input, (pr_output_t*)rip_output, 0, rip_ctloutput,
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0,
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0, 0, 0, 0,
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&rip_usrreqs
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};
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#endif
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#ifdef INET6
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extern struct domain inet6domain;
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struct ip6protosw in6_gif_protosw =
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{ SOCK_RAW, &inet6domain, 0/*IPPROTO_IPV[46]*/, PR_ATOMIC|PR_ADDR,
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in6_gif_input, rip6_output, 0, rip6_ctloutput,
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0,
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0, 0, 0, 0,
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&rip6_usrreqs
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};
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#endif
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SYSCTL_DECL(_net_link);
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SYSCTL_NODE(_net_link, IFT_GIF, gif, CTLFLAG_RW, 0,
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"Generic Tunnel Interface");
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#ifndef MAX_GIF_NEST
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/*
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* This macro controls the default upper limitation on nesting of gif tunnels.
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* Since, setting a large value to this macro with a careless configuration
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* may introduce system crash, we don't allow any nestings by default.
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* If you need to configure nested gif tunnels, you can define this macro
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* in your kernel configuration file. However, if you do so, please be
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* careful to configure the tunnels so that it won't make a loop.
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*/
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#define MAX_GIF_NEST 1
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#endif
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static int max_gif_nesting = MAX_GIF_NEST;
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SYSCTL_INT(_net_link_gif, OID_AUTO, max_nesting, CTLFLAG_RW,
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&max_gif_nesting, 0, "Max nested tunnels");
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/*
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* By default, we disallow creation of multiple tunnels between the same
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* pair of addresses. Some applications require this functionality so
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* we allow control over this check here.
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*/
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#ifdef XBONEHACK
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static int parallel_tunnels = 1;
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#else
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static int parallel_tunnels = 0;
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#endif
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SYSCTL_INT(_net_link_gif, OID_AUTO, parallel_tunnels, CTLFLAG_RW,
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¶llel_tunnels, 0, "Allow parallel tunnels?");
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int
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gif_clone_create(ifc, unit)
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struct if_clone *ifc;
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int unit;
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{
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struct gif_softc *sc;
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sc = malloc (sizeof(struct gif_softc), M_GIF, M_WAITOK);
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bzero(sc, sizeof(struct gif_softc));
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sc->gif_if.if_softc = sc;
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sc->gif_if.if_name = GIFNAME;
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sc->gif_if.if_unit = unit;
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sc->encap_cookie4 = sc->encap_cookie6 = NULL;
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#ifdef INET
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sc->encap_cookie4 = encap_attach_func(AF_INET, -1,
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gif_encapcheck, (struct protosw*)&in_gif_protosw, sc);
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if (sc->encap_cookie4 == NULL) {
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printf("%s: unable to attach encap4\n", if_name(&sc->gif_if));
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free(sc, M_GIF);
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return (EIO); /* XXX */
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}
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#endif
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#ifdef INET6
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sc->encap_cookie6 = encap_attach_func(AF_INET6, -1,
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gif_encapcheck, (struct protosw *)&in6_gif_protosw, sc);
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if (sc->encap_cookie6 == NULL) {
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if (sc->encap_cookie4) {
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encap_detach(sc->encap_cookie4);
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sc->encap_cookie4 = NULL;
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}
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printf("%s: unable to attach encap6\n", if_name(&sc->gif_if));
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free(sc, M_GIF);
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return (EIO); /* XXX */
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}
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#endif
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sc->gif_if.if_mtu = GIF_MTU;
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sc->gif_if.if_flags = IFF_POINTOPOINT | IFF_MULTICAST;
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#if 0
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/* turn off ingress filter */
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sc->gif_if.if_flags |= IFF_LINK2;
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#endif
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sc->gif_if.if_ioctl = gif_ioctl;
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sc->gif_if.if_output = gif_output;
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sc->gif_if.if_type = IFT_GIF;
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sc->gif_if.if_snd.ifq_maxlen = IFQ_MAXLEN;
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if_attach(&sc->gif_if);
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bpfattach(&sc->gif_if, DLT_NULL, sizeof(u_int));
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if (ng_gif_attach_p != NULL)
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(*ng_gif_attach_p)(&sc->gif_if);
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LIST_INSERT_HEAD(&gif_softc_list, sc, gif_link);
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return (0);
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}
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void
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gif_clone_destroy(ifp)
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struct ifnet *ifp;
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{
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int err;
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struct gif_softc *sc = ifp->if_softc;
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gif_delete_tunnel(sc);
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LIST_REMOVE(sc, gif_link);
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if (sc->encap_cookie4 != NULL) {
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err = encap_detach(sc->encap_cookie4);
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KASSERT(err == 0, ("Unexpected error detaching encap_cookie4"));
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}
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if (sc->encap_cookie6 != NULL) {
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err = encap_detach(sc->encap_cookie6);
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KASSERT(err == 0, ("Unexpected error detaching encap_cookie6"));
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}
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if (ng_gif_detach_p != NULL)
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(*ng_gif_detach_p)(ifp);
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bpfdetach(ifp);
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if_detach(ifp);
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free(sc, M_GIF);
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}
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static int
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gifmodevent(mod, type, data)
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module_t mod;
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int type;
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void *data;
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{
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switch (type) {
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case MOD_LOAD:
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LIST_INIT(&gif_softc_list);
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if_clone_attach(&gif_cloner);
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#ifdef INET6
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ip6_gif_hlim = GIF_HLIM;
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#endif
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break;
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case MOD_UNLOAD:
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if_clone_detach(&gif_cloner);
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while (!LIST_EMPTY(&gif_softc_list))
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gif_clone_destroy(&LIST_FIRST(&gif_softc_list)->gif_if);
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#ifdef INET6
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ip6_gif_hlim = 0;
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#endif
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break;
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}
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return 0;
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}
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static moduledata_t gif_mod = {
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"if_gif",
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gifmodevent,
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0
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};
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DECLARE_MODULE(if_gif, gif_mod, SI_SUB_PSEUDO, SI_ORDER_ANY);
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MODULE_VERSION(if_gif, 1);
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static int
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gif_encapcheck(m, off, proto, arg)
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const struct mbuf *m;
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int off;
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int proto;
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void *arg;
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{
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struct ip ip;
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struct gif_softc *sc;
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sc = (struct gif_softc *)arg;
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if (sc == NULL)
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return 0;
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if ((sc->gif_if.if_flags & IFF_UP) == 0)
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return 0;
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/* no physical address */
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if (!sc->gif_psrc || !sc->gif_pdst)
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return 0;
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switch (proto) {
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#ifdef INET
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case IPPROTO_IPV4:
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break;
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#endif
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#ifdef INET6
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case IPPROTO_IPV6:
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break;
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#endif
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default:
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return 0;
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}
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m_copydata(m, 0, sizeof(ip), (caddr_t)&ip);
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switch (ip.ip_v) {
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#ifdef INET
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case 4:
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if (sc->gif_psrc->sa_family != AF_INET ||
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sc->gif_pdst->sa_family != AF_INET)
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return 0;
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return gif_encapcheck4(m, off, proto, arg);
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#endif
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#ifdef INET6
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case 6:
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if (sc->gif_psrc->sa_family != AF_INET6 ||
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sc->gif_pdst->sa_family != AF_INET6)
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return 0;
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return gif_encapcheck6(m, off, proto, arg);
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#endif
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default:
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return 0;
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}
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}
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int
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gif_output(ifp, m, dst, rt)
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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 rtentry *rt; /* added in net2 */
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{
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struct gif_softc *sc = (struct gif_softc*)ifp;
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int error = 0;
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static int called = 0; /* XXX: MUTEX */
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/*
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* gif may cause infinite recursion calls when misconfigured.
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* We'll prevent this by introducing upper limit.
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* XXX: this mechanism may introduce another problem about
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* mutual exclusion of the variable CALLED, especially if we
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* use kernel thread.
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*/
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if (++called > max_gif_nesting) {
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log(LOG_NOTICE,
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"gif_output: recursively called too many times(%d)\n",
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called);
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m_freem(m);
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error = EIO; /* is there better errno? */
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goto end;
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}
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m->m_flags &= ~(M_BCAST|M_MCAST);
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if (!(ifp->if_flags & IFF_UP) ||
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sc->gif_psrc == NULL || sc->gif_pdst == NULL) {
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m_freem(m);
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error = ENETDOWN;
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goto end;
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}
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if (ifp->if_bpf) {
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/*
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* We need to prepend the address family as
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* a four byte field. Cons up a dummy header
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* to pacify bpf. This is safe because bpf
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* will only read from the mbuf (i.e., it won't
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* try to free it or keep a pointer a to it).
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*/
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struct mbuf m0;
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u_int32_t af = dst->sa_family;
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m0.m_next = m;
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m0.m_len = 4;
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m0.m_data = (char *)⁡
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bpf_mtap(ifp, &m0);
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}
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ifp->if_opackets++;
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ifp->if_obytes += m->m_pkthdr.len;
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/* inner AF-specific encapsulation */
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/* XXX should we check if our outer source is legal? */
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/* dispatch to output logic based on outer AF */
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switch (sc->gif_psrc->sa_family) {
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#ifdef INET
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case AF_INET:
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error = in_gif_output(ifp, dst->sa_family, m, rt);
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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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error = in6_gif_output(ifp, dst->sa_family, m, rt);
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break;
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#endif
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default:
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m_freem(m);
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error = ENETDOWN;
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goto end;
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}
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end:
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called = 0; /* reset recursion counter */
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if (error)
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ifp->if_oerrors++;
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return error;
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}
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void
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gif_input(m, af, gifp)
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struct mbuf *m;
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int af;
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struct ifnet *gifp;
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{
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int isr;
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struct ifqueue *ifq = 0;
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if (gifp == NULL) {
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/* just in case */
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m_freem(m);
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return;
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}
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m->m_pkthdr.rcvif = gifp;
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if (gifp->if_bpf) {
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/*
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* We need to prepend the address family as
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* a four byte field. Cons up a dummy header
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* to pacify bpf. This is safe because bpf
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* will only read from the mbuf (i.e., it won't
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* try to free it or keep a pointer a to it).
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*/
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struct mbuf m0;
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u_int32_t af1 = af;
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m0.m_next = m;
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m0.m_len = 4;
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m0.m_data = (char *)&af1;
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bpf_mtap(gifp, &m0);
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}
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if (ng_gif_input_p != NULL) {
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(*ng_gif_input_p)(gifp, &m, af);
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if (m == NULL)
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return;
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}
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/*
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* Put the packet to the network layer input queue according to the
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* specified address family.
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* Note: older versions of gif_input directly called network layer
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* input functions, e.g. ip6_input, here. We changed the policy to
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* prevent too many recursive calls of such input functions, which
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* might cause kernel panic. But the change may introduce another
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* problem; if the input queue is full, packets are discarded.
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* The kernel stack overflow really happened, and we believed
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* queue-full rarely occurs, so we changed the policy.
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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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ifq = &ipintrq;
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isr = NETISR_IP;
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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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ifq = &ip6intrq;
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isr = NETISR_IPV6;
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break;
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#endif
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default:
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if (ng_gif_input_orphan_p != NULL)
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(*ng_gif_input_orphan_p)(gifp, m, af);
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else
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m_freem(m);
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return;
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}
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gifp->if_ipackets++;
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gifp->if_ibytes += m->m_pkthdr.len;
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(void) IF_HANDOFF(ifq, m, NULL);
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/* we need schednetisr since the address family may change */
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schednetisr(isr);
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return;
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}
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/* XXX how should we handle IPv6 scope on SIOC[GS]IFPHYADDR? */
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int
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gif_ioctl(ifp, cmd, data)
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struct ifnet *ifp;
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u_long cmd;
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caddr_t data;
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{
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struct gif_softc *sc = (struct gif_softc*)ifp;
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struct ifreq *ifr = (struct ifreq*)data;
|
|
int error = 0, size;
|
|
struct sockaddr *dst, *src;
|
|
struct sockaddr *sa;
|
|
int s;
|
|
struct ifnet *ifp2;
|
|
struct gif_softc *sc2;
|
|
|
|
switch (cmd) {
|
|
case SIOCSIFADDR:
|
|
break;
|
|
|
|
case SIOCSIFDSTADDR:
|
|
break;
|
|
|
|
case SIOCADDMULTI:
|
|
case SIOCDELMULTI:
|
|
break;
|
|
|
|
#ifdef SIOCSIFMTU /* xxx */
|
|
case SIOCGIFMTU:
|
|
break;
|
|
|
|
case SIOCSIFMTU:
|
|
{
|
|
u_long mtu;
|
|
mtu = ifr->ifr_mtu;
|
|
if (mtu < GIF_MTU_MIN || mtu > GIF_MTU_MAX) {
|
|
return (EINVAL);
|
|
}
|
|
ifp->if_mtu = mtu;
|
|
}
|
|
break;
|
|
#endif /* SIOCSIFMTU */
|
|
|
|
case SIOCSIFPHYADDR:
|
|
#ifdef INET6
|
|
case SIOCSIFPHYADDR_IN6:
|
|
#endif /* INET6 */
|
|
case SIOCSLIFPHYADDR:
|
|
switch (cmd) {
|
|
#ifdef INET
|
|
case SIOCSIFPHYADDR:
|
|
src = (struct sockaddr *)
|
|
&(((struct in_aliasreq *)data)->ifra_addr);
|
|
dst = (struct sockaddr *)
|
|
&(((struct in_aliasreq *)data)->ifra_dstaddr);
|
|
break;
|
|
#endif
|
|
#ifdef INET6
|
|
case SIOCSIFPHYADDR_IN6:
|
|
src = (struct sockaddr *)
|
|
&(((struct in6_aliasreq *)data)->ifra_addr);
|
|
dst = (struct sockaddr *)
|
|
&(((struct in6_aliasreq *)data)->ifra_dstaddr);
|
|
break;
|
|
#endif
|
|
case SIOCSLIFPHYADDR:
|
|
src = (struct sockaddr *)
|
|
&(((struct if_laddrreq *)data)->addr);
|
|
dst = (struct sockaddr *)
|
|
&(((struct if_laddrreq *)data)->dstaddr);
|
|
default:
|
|
error = EADDRNOTAVAIL;
|
|
goto bad;
|
|
}
|
|
|
|
/* sa_family must be equal */
|
|
if (src->sa_family != dst->sa_family)
|
|
return EINVAL;
|
|
|
|
/* validate sa_len */
|
|
switch (src->sa_family) {
|
|
#ifdef INET
|
|
case AF_INET:
|
|
if (src->sa_len != sizeof(struct sockaddr_in))
|
|
return EINVAL;
|
|
break;
|
|
#endif
|
|
#ifdef INET6
|
|
case AF_INET6:
|
|
if (src->sa_len != sizeof(struct sockaddr_in6))
|
|
return EINVAL;
|
|
break;
|
|
#endif
|
|
default:
|
|
return EAFNOSUPPORT;
|
|
}
|
|
switch (dst->sa_family) {
|
|
#ifdef INET
|
|
case AF_INET:
|
|
if (dst->sa_len != sizeof(struct sockaddr_in))
|
|
return EINVAL;
|
|
break;
|
|
#endif
|
|
#ifdef INET6
|
|
case AF_INET6:
|
|
if (dst->sa_len != sizeof(struct sockaddr_in6))
|
|
return EINVAL;
|
|
break;
|
|
#endif
|
|
default:
|
|
return EAFNOSUPPORT;
|
|
}
|
|
|
|
/* check sa_family looks sane for the cmd */
|
|
switch (cmd) {
|
|
case SIOCSIFPHYADDR:
|
|
if (src->sa_family == AF_INET)
|
|
break;
|
|
return EAFNOSUPPORT;
|
|
#ifdef INET6
|
|
case SIOCSIFPHYADDR_IN6:
|
|
if (src->sa_family == AF_INET6)
|
|
break;
|
|
return EAFNOSUPPORT;
|
|
#endif /* INET6 */
|
|
case SIOCSLIFPHYADDR:
|
|
/* checks done in the above */
|
|
break;
|
|
}
|
|
|
|
TAILQ_FOREACH(ifp2, &ifnet, if_link) {
|
|
if (strcmp(ifp2->if_name, GIFNAME) != 0)
|
|
continue;
|
|
sc2 = ifp2->if_softc;
|
|
if (sc2 == sc)
|
|
continue;
|
|
if (!sc2->gif_pdst || !sc2->gif_psrc)
|
|
continue;
|
|
if (sc2->gif_pdst->sa_family != dst->sa_family ||
|
|
sc2->gif_pdst->sa_len != dst->sa_len ||
|
|
sc2->gif_psrc->sa_family != src->sa_family ||
|
|
sc2->gif_psrc->sa_len != src->sa_len)
|
|
continue;
|
|
|
|
/*
|
|
* Disallow parallel tunnels unless instructed
|
|
* otherwise.
|
|
*/
|
|
if (!parallel_tunnels &&
|
|
bcmp(sc2->gif_pdst, dst, dst->sa_len) == 0 &&
|
|
bcmp(sc2->gif_psrc, src, src->sa_len) == 0) {
|
|
error = EADDRNOTAVAIL;
|
|
goto bad;
|
|
}
|
|
|
|
/* can't configure multiple multi-dest interfaces */
|
|
#define multidest(x) \
|
|
(((struct sockaddr_in *)(x))->sin_addr.s_addr == INADDR_ANY)
|
|
#ifdef INET6
|
|
#define multidest6(x) \
|
|
(IN6_IS_ADDR_UNSPECIFIED(&((struct sockaddr_in6 *)(x))->sin6_addr))
|
|
#endif
|
|
if (dst->sa_family == AF_INET &&
|
|
multidest(dst) && multidest(sc2->gif_pdst)) {
|
|
error = EADDRNOTAVAIL;
|
|
goto bad;
|
|
}
|
|
#ifdef INET6
|
|
if (dst->sa_family == AF_INET6 &&
|
|
multidest6(dst) && multidest6(sc2->gif_pdst)) {
|
|
error = EADDRNOTAVAIL;
|
|
goto bad;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
if (sc->gif_psrc)
|
|
free((caddr_t)sc->gif_psrc, M_IFADDR);
|
|
sa = (struct sockaddr *)malloc(src->sa_len, M_IFADDR, M_WAITOK);
|
|
bcopy((caddr_t)src, (caddr_t)sa, src->sa_len);
|
|
sc->gif_psrc = sa;
|
|
|
|
if (sc->gif_pdst)
|
|
free((caddr_t)sc->gif_pdst, M_IFADDR);
|
|
sa = (struct sockaddr *)malloc(dst->sa_len, M_IFADDR, M_WAITOK);
|
|
bcopy((caddr_t)dst, (caddr_t)sa, dst->sa_len);
|
|
sc->gif_pdst = sa;
|
|
|
|
ifp->if_flags |= IFF_RUNNING;
|
|
s = splimp();
|
|
if_up(ifp); /* mark interface UP and send up RTM_IFINFO */
|
|
splx(s);
|
|
|
|
error = 0;
|
|
break;
|
|
|
|
#ifdef SIOCDIFPHYADDR
|
|
case SIOCDIFPHYADDR:
|
|
if (sc->gif_psrc) {
|
|
free((caddr_t)sc->gif_psrc, M_IFADDR);
|
|
sc->gif_psrc = NULL;
|
|
}
|
|
if (sc->gif_pdst) {
|
|
free((caddr_t)sc->gif_pdst, M_IFADDR);
|
|
sc->gif_pdst = NULL;
|
|
}
|
|
/* change the IFF_{UP, RUNNING} flag as well? */
|
|
break;
|
|
#endif
|
|
|
|
case SIOCGIFPSRCADDR:
|
|
#ifdef INET6
|
|
case SIOCGIFPSRCADDR_IN6:
|
|
#endif /* INET6 */
|
|
if (sc->gif_psrc == NULL) {
|
|
error = EADDRNOTAVAIL;
|
|
goto bad;
|
|
}
|
|
src = sc->gif_psrc;
|
|
switch (cmd) {
|
|
#ifdef INET
|
|
case SIOCGIFPSRCADDR:
|
|
dst = &ifr->ifr_addr;
|
|
size = sizeof(ifr->ifr_addr);
|
|
break;
|
|
#endif /* INET */
|
|
#ifdef INET6
|
|
case SIOCGIFPSRCADDR_IN6:
|
|
dst = (struct sockaddr *)
|
|
&(((struct in6_ifreq *)data)->ifr_addr);
|
|
size = sizeof(((struct in6_ifreq *)data)->ifr_addr);
|
|
break;
|
|
#endif /* INET6 */
|
|
default:
|
|
error = EADDRNOTAVAIL;
|
|
goto bad;
|
|
}
|
|
if (src->sa_len > size)
|
|
return EINVAL;
|
|
bcopy((caddr_t)src, (caddr_t)dst, src->sa_len);
|
|
break;
|
|
|
|
case SIOCGIFPDSTADDR:
|
|
#ifdef INET6
|
|
case SIOCGIFPDSTADDR_IN6:
|
|
#endif /* INET6 */
|
|
if (sc->gif_pdst == NULL) {
|
|
error = EADDRNOTAVAIL;
|
|
goto bad;
|
|
}
|
|
src = sc->gif_pdst;
|
|
switch (cmd) {
|
|
#ifdef INET
|
|
case SIOCGIFPDSTADDR:
|
|
dst = &ifr->ifr_addr;
|
|
size = sizeof(ifr->ifr_addr);
|
|
break;
|
|
#endif /* INET */
|
|
#ifdef INET6
|
|
case SIOCGIFPDSTADDR_IN6:
|
|
dst = (struct sockaddr *)
|
|
&(((struct in6_ifreq *)data)->ifr_addr);
|
|
size = sizeof(((struct in6_ifreq *)data)->ifr_addr);
|
|
break;
|
|
#endif /* INET6 */
|
|
default:
|
|
error = EADDRNOTAVAIL;
|
|
goto bad;
|
|
}
|
|
if (src->sa_len > size)
|
|
return EINVAL;
|
|
bcopy((caddr_t)src, (caddr_t)dst, src->sa_len);
|
|
break;
|
|
|
|
case SIOCGLIFPHYADDR:
|
|
if (sc->gif_psrc == NULL || sc->gif_pdst == NULL) {
|
|
error = EADDRNOTAVAIL;
|
|
goto bad;
|
|
}
|
|
|
|
/* copy src */
|
|
src = sc->gif_psrc;
|
|
dst = (struct sockaddr *)
|
|
&(((struct if_laddrreq *)data)->addr);
|
|
size = sizeof(((struct if_laddrreq *)data)->addr);
|
|
if (src->sa_len > size)
|
|
return EINVAL;
|
|
bcopy((caddr_t)src, (caddr_t)dst, src->sa_len);
|
|
|
|
/* copy dst */
|
|
src = sc->gif_pdst;
|
|
dst = (struct sockaddr *)
|
|
&(((struct if_laddrreq *)data)->dstaddr);
|
|
size = sizeof(((struct if_laddrreq *)data)->dstaddr);
|
|
if (src->sa_len > size)
|
|
return EINVAL;
|
|
bcopy((caddr_t)src, (caddr_t)dst, src->sa_len);
|
|
break;
|
|
|
|
case SIOCSIFFLAGS:
|
|
/* if_ioctl() takes care of it */
|
|
break;
|
|
|
|
default:
|
|
error = EINVAL;
|
|
break;
|
|
}
|
|
bad:
|
|
return error;
|
|
}
|
|
|
|
void
|
|
gif_delete_tunnel(sc)
|
|
struct gif_softc *sc;
|
|
{
|
|
/* XXX: NetBSD protects this function with splsoftnet() */
|
|
|
|
if (sc->gif_psrc) {
|
|
free((caddr_t)sc->gif_psrc, M_IFADDR);
|
|
sc->gif_psrc = NULL;
|
|
}
|
|
if (sc->gif_pdst) {
|
|
free((caddr_t)sc->gif_pdst, M_IFADDR);
|
|
sc->gif_pdst = NULL;
|
|
}
|
|
/* change the IFF_UP flag as well? */
|
|
}
|