if_stf: add 6rd support
Implement IPv6 Rapid Deployment (RFC5969) on top of the existing 6to4
(RFC3056) if_stf code.
PR: 253328
Reviewed by: hrs
Obtained from: pfSense
Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D33037
This commit is contained in:
Kristof Provost
parent
3adc9c8c73
commit
19dc644511
@ -24,6 +24,7 @@ SRCS+= af_inet6.c # IPv6 support
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.endif
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.if ${MK_INET6_SUPPORT} != "no"
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SRCS+= af_nd6.c # ND6 support
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SRCS+= ifstf.c # STF configuration options
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.endif
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SRCS+= ifclone.c # clone device support
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152
sbin/ifconfig/ifstf.c
Normal file
152
sbin/ifconfig/ifstf.c
Normal file
@ -0,0 +1,152 @@
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/*-
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* Copyright 2013 Ermal Luci
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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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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <net/ethernet.h>
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#include <net/if.h>
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#include <net/route.h>
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#include <netinet/in.h>
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#include <sys/mbuf.h>
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#include <net/if_stf.h>
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#include <arpa/inet.h>
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#include <ctype.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <err.h>
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#include <errno.h>
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#include "ifconfig.h"
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static int
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do_cmd(int sock, u_long op, void *arg, size_t argsize, int set)
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{
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struct ifdrv ifd;
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memset(&ifd, 0, sizeof(ifd));
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strlcpy(ifd.ifd_name, ifr.ifr_name, sizeof(ifd.ifd_name));
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ifd.ifd_cmd = op;
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ifd.ifd_len = argsize;
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ifd.ifd_data = arg;
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return (ioctl(sock, set ? SIOCSDRVSPEC : SIOCGDRVSPEC, &ifd));
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}
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static void
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stf_status(int s)
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{
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struct stfv4args param;
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if (do_cmd(s, STF6RD_GV4NET, ¶m, sizeof(param), 0) < 0)
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return;
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printf("\tv4net %s/%d -> ", inet_ntoa(param.srcv4_addr),
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param.v4_prefixlen ? param.v4_prefixlen : 32);
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printf("tv4br %s\n", inet_ntoa(param.braddr));
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}
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static void
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setstf_br(const char *val, int d, int s, const struct afswtch *afp)
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{
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struct stfv4args req;
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struct sockaddr_in sin;
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memset(&req, 0, sizeof(req));
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sin.sin_len = sizeof(sin);
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sin.sin_family = AF_INET;
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if (!inet_aton(val, &sin.sin_addr))
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errx(1, "%s: bad value", val);
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req.braddr = sin.sin_addr;
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if (do_cmd(s, STF6RD_SBR, &req, sizeof(req), 1) < 0)
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err(1, "STF6RD_SBR%s", val);
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}
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static void
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setstf_set(const char *val, int d, int s, const struct afswtch *afp)
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{
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struct stfv4args req;
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struct sockaddr_in sin;
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const char *errstr;
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char *p = NULL;
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memset(&req, 0, sizeof(req));
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sin.sin_len = sizeof(sin);
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sin.sin_family = AF_INET;
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p = strrchr(val, '/');
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if (p == NULL)
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errx(2, "Wrong argument given");
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*p = '\0';
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req.v4_prefixlen = (int)strtonum(p + 1, 0, 32, &errstr);
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if (errstr != NULL || req.v4_prefixlen == 0) {
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*p = '/';
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errx(1, "%s: bad value (prefix length %s)", val, errstr);
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}
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if (!inet_aton(val, &sin.sin_addr))
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errx(1, "%s: bad value", val);
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memcpy(&req.srcv4_addr, &sin.sin_addr, sizeof(req.srcv4_addr));
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if (do_cmd(s, STF6RD_SV4NET, &req, sizeof(req), 1) < 0)
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err(1, "STF6RD_SV4NET %s", val);
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}
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static struct cmd stf_cmds[] = {
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DEF_CMD_ARG("stfv4net", setstf_set),
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DEF_CMD_ARG("stfv4br", setstf_br),
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};
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static struct afswtch af_stf = {
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.af_name = "af_stf",
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.af_af = AF_UNSPEC,
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.af_other_status = stf_status,
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};
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static __constructor void
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stf_ctor(void)
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{
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int i;
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for (i = 0; i < nitems(stf_cmds); i++)
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cmd_register(&stf_cmds[i]);
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af_register(&af_stf);
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}
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314
sys/net/if_stf.c
314
sys/net/if_stf.c
@ -5,6 +5,9 @@
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (C) 2000 WIDE Project.
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* Copyright (c) 2010 Hiroki Sato <hrs@FreeBSD.org>
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* Copyright (c) 2013 Ermal Luci <eri@FreeBSD.org>
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* Copyright (c) 2017-2021 Rubicon Communications, LLC (Netgate)
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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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@ -81,10 +84,12 @@
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <sys/mbuf.h>
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#include <sys/endian.h>
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#include <sys/errno.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/module.h>
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#include <sys/priv.h>
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#include <sys/proc.h>
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#include <sys/queue.h>
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#include <sys/sysctl.h>
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@ -98,6 +103,7 @@
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#include <net/route.h>
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#include <net/route/nhop.h>
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#include <net/netisr.h>
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#include <net/if_stf.h>
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#include <net/if_types.h>
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#include <net/vnet.h>
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@ -109,6 +115,7 @@
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#include <netinet/in_var.h>
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#include <netinet/ip6.h>
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#include <netinet6/in6_fib.h>
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#include <netinet6/ip6_var.h>
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#include <netinet6/in6_var.h>
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#include <netinet/ip_ecn.h>
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@ -141,7 +148,10 @@ SYSCTL_INT(_net_link_stf, OID_AUTO, permit_rfc1918, CTLFLAG_RWTUN,
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struct stf_softc {
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struct ifnet *sc_ifp;
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u_int sc_fibnum;
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in_addr_t braddr; /* Border relay IPv4 address */
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in_addr_t srcv4_addr; /* Our IPv4 WAN address */
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u_int v4prefixlen; /* How much of the v4 address to include in our address. */
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u_int sc_fibnum;
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const struct encaptab *encap_cookie;
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};
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#define STF2IFP(sc) ((sc)->sc_ifp)
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@ -164,6 +174,11 @@ static int stf_checkaddr4(struct stf_softc *, struct in_addr *,
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struct ifnet *);
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static int stf_checkaddr6(struct stf_softc *, struct in6_addr *,
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struct ifnet *);
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static struct sockaddr_in *stf_getin4addr_in6(struct stf_softc *,
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struct sockaddr_in *, struct in6_addr, struct in6_addr,
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struct in6_addr);
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static struct sockaddr_in *stf_getin4addr(struct stf_softc *,
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struct sockaddr_in *, struct in6_addr, struct in6_addr);
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static int stf_ioctl(struct ifnet *, u_long, caddr_t);
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static int stf_clone_match(struct if_clone *, const char *);
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@ -324,14 +339,15 @@ static moduledata_t stf_mod = {
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};
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DECLARE_MODULE(if_stf, stf_mod, SI_SUB_PSEUDO, SI_ORDER_ANY);
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MODULE_VERSION(if_stf, 2);
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static int
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stf_encapcheck(const struct mbuf *m, int off, int proto, void *arg)
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{
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struct ip ip;
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struct stf_softc *sc;
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struct in_addr a, b, mask;
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struct in6_addr addr6, mask6;
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struct sockaddr_in sin4addr, sin4mask;
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sc = (struct stf_softc *)arg;
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if (sc == NULL)
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@ -355,28 +371,42 @@ stf_encapcheck(const struct mbuf *m, int off, int proto, void *arg)
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if (stf_getsrcifa6(STF2IFP(sc), &addr6, &mask6) != 0)
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return (0);
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/*
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* check if IPv4 dst matches the IPv4 address derived from the
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* local 6to4 address.
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* success on: dst = 10.1.1.1, ia6->ia_addr = 2002:0a01:0101:...
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*/
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if (bcmp(GET_V4(&addr6), &ip.ip_dst, sizeof(ip.ip_dst)) != 0)
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if (sc->srcv4_addr != INADDR_ANY) {
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sin4addr.sin_addr.s_addr = sc->srcv4_addr;
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sin4addr.sin_family = AF_INET;
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} else
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if (stf_getin4addr(sc, &sin4addr, addr6, mask6) == NULL)
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return (0);
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if (sin4addr.sin_addr.s_addr != ip.ip_dst.s_addr)
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return (0);
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/*
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* check if IPv4 src matches the IPv4 address derived from the
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* local 6to4 address masked by prefixmask.
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* success on: src = 10.1.1.1, ia6->ia_addr = 2002:0a00:.../24
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* fail on: src = 10.1.1.1, ia6->ia_addr = 2002:0b00:.../24
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*/
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bzero(&a, sizeof(a));
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bcopy(GET_V4(&addr6), &a, sizeof(a));
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bcopy(GET_V4(&mask6), &mask, sizeof(mask));
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a.s_addr &= mask.s_addr;
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b = ip.ip_src;
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b.s_addr &= mask.s_addr;
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if (a.s_addr != b.s_addr)
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return (0);
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if (IN6_IS_ADDR_6TO4(&addr6)) {
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/*
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* 6to4 (RFC 3056).
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* Check if IPv4 src matches the IPv4 address derived
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* from the local 6to4 address masked by prefixmask.
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* success on: src = 10.1.1.1, ia6->ia_addr = 2002:0a00:.../24
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* fail on: src = 10.1.1.1, ia6->ia_addr = 2002:0b00:.../24
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*/
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memcpy(&sin4mask.sin_addr, GET_V4(&mask6),
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sizeof(sin4mask.sin_addr));
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if ((sin4addr.sin_addr.s_addr & sin4mask.sin_addr.s_addr) !=
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(ip.ip_src.s_addr & sin4mask.sin_addr.s_addr))
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return (0);
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} else {
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/* 6rd (RFC 5569) */
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/*
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* No restriction on the src address in the case of
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* 6rd because the stf(4) interface always has a
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* prefix which covers whole of IPv4 src address
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* range. So, stf_output() will catch all of
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* 6rd-capsuled IPv4 traffic with suspicious inner dst
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* IPv4 address (i.e. the IPv6 destination address is
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* one the admin does not like to route to outside),
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* and then it discard them silently.
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*/
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}
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/* stf interface makes single side match only */
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return (32);
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@ -387,30 +417,38 @@ stf_getsrcifa6(struct ifnet *ifp, struct in6_addr *addr, struct in6_addr *mask)
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{
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struct ifaddr *ia;
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struct in_ifaddr *ia4;
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struct in6_ifaddr *ia6;
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struct sockaddr_in6 *sin6;
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struct in6_addr addr6, mask6;
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struct sockaddr_in sin4;
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struct stf_softc *sc;
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struct in_addr in;
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NET_EPOCH_ASSERT();
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sc = ifp->if_softc;
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CK_STAILQ_FOREACH(ia, &ifp->if_addrhead, ifa_link) {
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if (ia->ifa_addr->sa_family != AF_INET6)
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continue;
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sin6 = (struct sockaddr_in6 *)ia->ifa_addr;
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if (!IN6_IS_ADDR_6TO4(&sin6->sin6_addr))
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continue;
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bcopy(GET_V4(&sin6->sin6_addr), &in, sizeof(in));
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addr6 = *IFA_IN6(ia);
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mask6 = *IFA_MASKIN6(ia);
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if (sc->srcv4_addr != INADDR_ANY)
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bcopy(&sc->srcv4_addr, &in, sizeof(in));
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else {
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if (stf_getin4addr(sc, &sin4, addr6, mask6) == NULL)
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continue;
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bcopy(&sin4.sin_addr, &in, sizeof(in));
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}
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CK_LIST_FOREACH(ia4, INADDR_HASH(in.s_addr), ia_hash)
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if (ia4->ia_addr.sin_addr.s_addr == in.s_addr)
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break;
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if (ia4 == NULL)
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continue;
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ia6 = (struct in6_ifaddr *)ia;
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*addr = addr6;
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*mask = mask6;
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*addr = sin6->sin6_addr;
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*mask = ia6->ia_prefixmask.sin6_addr;
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return (0);
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}
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@ -423,8 +461,7 @@ stf_output(struct ifnet *ifp, struct mbuf *m, const struct sockaddr *dst,
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{
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struct stf_softc *sc;
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const struct sockaddr_in6 *dst6;
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struct in_addr in4;
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const void *ptr;
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struct sockaddr_in dst4, src4;
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u_int8_t tos;
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struct ip *ip;
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struct ip6_hdr *ip6;
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@ -474,17 +511,17 @@ stf_output(struct ifnet *ifp, struct mbuf *m, const struct sockaddr *dst,
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* Pickup the right outer dst addr from the list of candidates.
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* ip6_dst has priority as it may be able to give us shorter IPv4 hops.
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*/
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ptr = NULL;
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if (IN6_IS_ADDR_6TO4(&ip6->ip6_dst))
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ptr = GET_V4(&ip6->ip6_dst);
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else if (IN6_IS_ADDR_6TO4(&dst6->sin6_addr))
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ptr = GET_V4(&dst6->sin6_addr);
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else {
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m_freem(m);
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if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
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return (ENETUNREACH);
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if (stf_getin4addr_in6(sc, &dst4, addr6, mask6,
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ip6->ip6_dst) == NULL) {
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if (sc->braddr != INADDR_ANY)
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dst4.sin_addr.s_addr = sc->braddr;
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else if (stf_getin4addr_in6(sc, &dst4, addr6, mask6,
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dst6->sin6_addr) == NULL) {
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m_freem(m);
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if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
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return (ENETUNREACH);
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}
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}
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bcopy(ptr, &in4, sizeof(in4));
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if (bpf_peers_present(ifp->if_bpf)) {
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/*
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@ -507,8 +544,16 @@ stf_output(struct ifnet *ifp, struct mbuf *m, const struct sockaddr *dst,
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bzero(ip, sizeof(*ip));
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bcopy(GET_V4(&addr6), &ip->ip_src, sizeof(ip->ip_src));
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bcopy(&in4, &ip->ip_dst, sizeof(ip->ip_dst));
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if (sc->srcv4_addr != INADDR_ANY)
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src4.sin_addr.s_addr = sc->srcv4_addr;
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else if (stf_getin4addr(sc, &src4, addr6, mask6) == NULL) {
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m_freem(m);
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if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
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return (ENETUNREACH);
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}
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bcopy(&src4.sin_addr, &ip->ip_src, sizeof(ip->ip_src));
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bcopy(&dst4.sin_addr, &ip->ip_dst, sizeof(ip->ip_dst));
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ip->ip_p = IPPROTO_IPV6;
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ip->ip_ttl = ip_stf_ttl;
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ip->ip_len = htons(m->m_pkthdr.len);
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@ -556,13 +601,6 @@ stf_checkaddr4(struct stf_softc *sc, struct in_addr *in, struct ifnet *inifp)
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return (-1);
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}
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/*
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||||
* reject packets with private address range.
|
||||
* (requirement from RFC3056 section 2 1st paragraph)
|
||||
*/
|
||||
if (isrfc1918addr(in))
|
||||
return (-1);
|
||||
|
||||
/*
|
||||
* reject packets with broadcast
|
||||
*/
|
||||
@ -624,6 +662,7 @@ in_stf_input(struct mbuf *m, int off, int proto, void *arg)
|
||||
struct ip6_hdr *ip6;
|
||||
u_int8_t otos, itos;
|
||||
struct ifnet *ifp;
|
||||
struct nhop_object *nh;
|
||||
|
||||
NET_EPOCH_ASSERT();
|
||||
|
||||
@ -674,6 +713,32 @@ in_stf_input(struct mbuf *m, int off, int proto, void *arg)
|
||||
return (IPPROTO_DONE);
|
||||
}
|
||||
|
||||
/*
|
||||
* reject packets with private address range.
|
||||
* (requirement from RFC3056 section 2 1st paragraph)
|
||||
*/
|
||||
if ((IN6_IS_ADDR_6TO4(&ip6->ip6_src) && isrfc1918addr(&ip->ip_src)) ||
|
||||
(IN6_IS_ADDR_6TO4(&ip6->ip6_dst) && isrfc1918addr(&ip->ip_dst))) {
|
||||
m_freem(m);
|
||||
return (IPPROTO_DONE);
|
||||
}
|
||||
|
||||
/*
|
||||
* Ignore if the destination is the same stf interface because
|
||||
* all of valid IPv6 outgoing traffic should go interfaces
|
||||
* except for it.
|
||||
*/
|
||||
nh = fib6_lookup(sc->sc_fibnum, &ip6->ip6_dst, 0, 0, 0);
|
||||
if (nh == NULL) {
|
||||
m_free(m);
|
||||
return (IPPROTO_DONE);
|
||||
}
|
||||
if ((nh->nh_ifp == ifp) &&
|
||||
(!IN6_ARE_ADDR_EQUAL(&ip6->ip6_src, &nh->gw6_sa.sin6_addr))) {
|
||||
m_free(m);
|
||||
return (IPPROTO_DONE);
|
||||
}
|
||||
|
||||
itos = IPV6_TRAFFIC_CLASS(ip6);
|
||||
if ((ifp->if_flags & IFF_LINK1) != 0)
|
||||
ip_ecn_egress(ECN_ALLOWED, &otos, &itos);
|
||||
@ -709,34 +774,159 @@ in_stf_input(struct mbuf *m, int off, int proto, void *arg)
|
||||
return (IPPROTO_DONE);
|
||||
}
|
||||
|
||||
static struct sockaddr_in *
|
||||
stf_getin4addr_in6(struct stf_softc *sc, struct sockaddr_in *sin,
|
||||
struct in6_addr addr6, struct in6_addr mask6, struct in6_addr in6)
|
||||
{
|
||||
int i;
|
||||
|
||||
/*
|
||||
* When (src addr & src mask) != (in6 & src mask),
|
||||
* the dst is not in the 6rd domain. The IPv4 address must
|
||||
* not be used.
|
||||
*/
|
||||
for (i = 0; i < sizeof(addr6); i++) {
|
||||
if ((((u_char *)&addr6)[i] & ((u_char *)&mask6)[i]) !=
|
||||
(((u_char *)&in6)[i] & ((u_char *)&mask6)[i]))
|
||||
return (NULL);
|
||||
}
|
||||
|
||||
/* After the mask check, use in6 instead of addr6. */
|
||||
return (stf_getin4addr(sc, sin, in6, mask6));
|
||||
}
|
||||
|
||||
static struct sockaddr_in *
|
||||
stf_getin4addr(struct stf_softc *sc, struct sockaddr_in *sin,
|
||||
struct in6_addr addr6, struct in6_addr mask6)
|
||||
{
|
||||
struct in_addr *in;
|
||||
|
||||
memset(sin, 0, sizeof(*sin));
|
||||
in = &sin->sin_addr;
|
||||
if (IN6_IS_ADDR_6TO4(&addr6)) {
|
||||
/* 6to4 (RFC 3056) */
|
||||
bcopy(GET_V4(&addr6), in, sizeof(*in));
|
||||
if (isrfc1918addr(in))
|
||||
return (NULL);
|
||||
} else {
|
||||
/* 6rd (RFC 5569) */
|
||||
in_addr_t v4prefix;
|
||||
uint8_t *v6 = (uint8_t*)&addr6;
|
||||
uint64_t v6prefix;
|
||||
u_int plen;
|
||||
u_int v4suffixlen;
|
||||
|
||||
v4prefix = 0;
|
||||
if (sc->v4prefixlen < 32) {
|
||||
v4suffixlen = 32 - sc->v4prefixlen;
|
||||
v4prefix = ntohl(sc->srcv4_addr) &
|
||||
(0xffffffffU << v4suffixlen);
|
||||
} else {
|
||||
MPASS(sc->v4prefixlen == 32);
|
||||
v4suffixlen = 32;
|
||||
}
|
||||
|
||||
plen = in6_mask2len(&mask6, NULL);
|
||||
if (plen > 64)
|
||||
return (NULL);
|
||||
|
||||
/* To make this simple we do not support prefixes longer than
|
||||
* 64 bits. RFC5969 says "a 6rd delegated prefix SHOULD be /64
|
||||
* or shorter." so this is a moderately safe assumption. */
|
||||
v6prefix = be64toh(*(uint64_t *)v6);
|
||||
|
||||
/* Shift away the v6 prefix itself. */
|
||||
v6prefix <<= plen;
|
||||
v6prefix >>= plen;
|
||||
|
||||
/* Now shift away everything after the v4 address. */
|
||||
v6prefix >>= 64 - plen - v4suffixlen;
|
||||
|
||||
sin->sin_addr.s_addr = htonl(v4prefix | (uint32_t)v6prefix);
|
||||
}
|
||||
|
||||
return (sin);
|
||||
}
|
||||
|
||||
static int
|
||||
stf_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
|
||||
{
|
||||
struct ifaddr *ifa;
|
||||
struct ifdrv *ifd;
|
||||
struct ifreq *ifr;
|
||||
struct sockaddr_in6 *sin6;
|
||||
struct in_addr addr;
|
||||
struct sockaddr_in sin4;
|
||||
struct stf_softc *sc_cur;
|
||||
struct stfv4args args;
|
||||
int error, mtu;
|
||||
|
||||
error = 0;
|
||||
sc_cur = ifp->if_softc;
|
||||
|
||||
switch (cmd) {
|
||||
case SIOCSDRVSPEC:
|
||||
ifd = (struct ifdrv *)data;
|
||||
error = priv_check(curthread, PRIV_NET_ADDIFADDR);
|
||||
if (error)
|
||||
break;
|
||||
if (ifd->ifd_cmd == STF6RD_SV4NET) {
|
||||
if (ifd->ifd_len != sizeof(args)) {
|
||||
error = EINVAL;
|
||||
break;
|
||||
}
|
||||
bzero(&args, sizeof(args));
|
||||
error = copyin(ifd->ifd_data, &args, ifd->ifd_len);
|
||||
if (error)
|
||||
break;
|
||||
|
||||
if (args.v4_prefixlen < 1 || args.v4_prefixlen > 32) {
|
||||
error = EINVAL;
|
||||
break;
|
||||
}
|
||||
|
||||
bcopy(&args.srcv4_addr, &sc_cur->srcv4_addr,
|
||||
sizeof(sc_cur->srcv4_addr));
|
||||
sc_cur->v4prefixlen = args.v4_prefixlen;
|
||||
} else if (ifd->ifd_cmd == STF6RD_SBR) {
|
||||
if (ifd->ifd_len != sizeof(args)) {
|
||||
error = EINVAL;
|
||||
break;
|
||||
}
|
||||
bzero(&args, sizeof(args));
|
||||
error = copyin(ifd->ifd_data, &args, ifd->ifd_len);
|
||||
if (error)
|
||||
break;
|
||||
sc_cur->braddr = args.braddr.s_addr;
|
||||
} else
|
||||
error = EINVAL;
|
||||
break;
|
||||
case SIOCGDRVSPEC:
|
||||
ifd = (struct ifdrv *)data;
|
||||
if (ifd->ifd_cmd != STF6RD_GV4NET) {
|
||||
error = EINVAL;
|
||||
break;
|
||||
}
|
||||
if (ifd->ifd_len != sizeof(args)) {
|
||||
error = EINVAL;
|
||||
break;
|
||||
}
|
||||
bzero(&args, sizeof(args));
|
||||
args.srcv4_addr.s_addr = sc_cur->srcv4_addr;
|
||||
args.braddr.s_addr = sc_cur->braddr;
|
||||
args.v4_prefixlen = sc_cur->v4prefixlen;
|
||||
error = copyout(&args, ifd->ifd_data, ifd->ifd_len);
|
||||
break;
|
||||
case SIOCSIFADDR:
|
||||
ifa = (struct ifaddr *)data;
|
||||
if (ifa == NULL || ifa->ifa_addr->sa_family != AF_INET6) {
|
||||
error = EAFNOSUPPORT;
|
||||
break;
|
||||
}
|
||||
sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
|
||||
if (!IN6_IS_ADDR_6TO4(&sin6->sin6_addr)) {
|
||||
if (stf_getin4addr(sc_cur, &sin4,
|
||||
satosin6(ifa->ifa_addr)->sin6_addr,
|
||||
satosin6(ifa->ifa_netmask)->sin6_addr) == NULL) {
|
||||
error = EINVAL;
|
||||
break;
|
||||
}
|
||||
bcopy(GET_V4(&sin6->sin6_addr), &addr, sizeof(addr));
|
||||
if (isrfc1918addr(&addr)) {
|
||||
error = EINVAL;
|
||||
break;
|
||||
}
|
||||
|
||||
ifp->if_flags |= IFF_UP;
|
||||
ifp->if_drv_flags |= IFF_DRV_RUNNING;
|
||||
break;
|
||||
|
||||
46
sys/net/if_stf.h
Normal file
46
sys/net/if_stf.h
Normal file
@ -0,0 +1,46 @@
|
||||
/*-
|
||||
* Copyright (C) 2000 WIDE Project.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. Neither the name of the project nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#ifndef _NET_IF_STF_H_
|
||||
#define _NET_IF_STF_H_
|
||||
|
||||
struct stfv4args {
|
||||
struct in_addr srcv4_addr; /* Our IPv4 src/WAN address */
|
||||
struct in_addr braddr; /* The border relay IPv4 address */
|
||||
int v4_prefixlen; /* The length of the IPv4 prefix. (I.e.
|
||||
the number of bits of the IPv4
|
||||
address not encoded in the IPv6
|
||||
address. */
|
||||
};
|
||||
|
||||
#define STF6RD_SV4NET 1
|
||||
#define STF6RD_GV4NET 2
|
||||
#define STF6RD_SBR 3
|
||||
|
||||
#endif /* _NET_IF_STF_H_ */
|
||||
@ -407,6 +407,7 @@ struct in6_rrenumreq {
|
||||
#define IA6_DSTSIN6(ia) (&((ia)->ia_dstaddr))
|
||||
#define IFA_IN6(x) (&((struct sockaddr_in6 *)((x)->ifa_addr))->sin6_addr)
|
||||
#define IFA_DSTIN6(x) (&((struct sockaddr_in6 *)((x)->ifa_dstaddr))->sin6_addr)
|
||||
#define IFA_MASKIN6(x) (&((struct sockaddr_in6 *)((x)->ifa_netmask))->sin6_addr)
|
||||
|
||||
#define IFPR_IN6(x) (&((struct sockaddr_in6 *)((x)->ifpr_prefix))->sin6_addr)
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user