839 lines
20 KiB
C
839 lines
20 KiB
C
/* $NetBSD: raw_ip6.c,v 1.29 2001/02/11 06:49:52 itojun Exp $ */
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/* $KAME: raw_ip6.c,v 1.65 2001/02/08 18:36:17 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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/*
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* Copyright (c) 1982, 1986, 1988, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)raw_ip.c 8.2 (Berkeley) 1/4/94
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*/
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#include "opt_ipsec.h"
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#include <sys/param.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/protosw.h>
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#include <sys/socketvar.h>
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#include <sys/errno.h>
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#include <sys/systm.h>
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#include <sys/proc.h>
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#include <net/if.h>
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#include <net/route.h>
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#include <net/if_types.h>
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#include <netinet/in.h>
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#include <netinet/in_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/ip6_mroute.h>
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#include <netinet/icmp6.h>
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#include <netinet6/in6_pcb.h>
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#include <netinet6/nd6.h>
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#include <netinet6/ip6protosw.h>
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#ifdef ENABLE_DEFAULT_SCOPE
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#include <netinet6/scope6_var.h>
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#endif
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#ifdef IPSEC
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#include <netinet6/ipsec.h>
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#endif /*IPSEC*/
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#include <machine/stdarg.h>
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#include "faith.h"
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struct in6pcb rawin6pcb;
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#define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa))
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/*
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* Raw interface to IP6 protocol.
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*/
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/*
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* Initialize raw connection block queue.
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*/
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void
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rip6_init()
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{
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rawin6pcb.in6p_next = rawin6pcb.in6p_prev = &rawin6pcb;
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}
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/*
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* Setup generic address and protocol structures
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* for raw_input routine, then pass them along with
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* mbuf chain.
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*/
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int
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rip6_input(mp, offp, proto)
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struct mbuf **mp;
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int *offp, proto;
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{
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struct mbuf *m = *mp;
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struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *);
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struct in6pcb *in6p;
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struct in6pcb *last = NULL;
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struct sockaddr_in6 rip6src;
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struct mbuf *opts = NULL;
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#if defined(NFAITH) && 0 < NFAITH
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if (m->m_pkthdr.rcvif) {
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if (m->m_pkthdr.rcvif->if_type == IFT_FAITH) {
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/* send icmp6 host unreach? */
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m_freem(m);
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return IPPROTO_DONE;
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}
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}
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#endif
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/* Be proactive about malicious use of IPv4 mapped address */
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if (IN6_IS_ADDR_V4MAPPED(&ip6->ip6_src) ||
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IN6_IS_ADDR_V4MAPPED(&ip6->ip6_dst)) {
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/* XXX stat */
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m_freem(m);
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return IPPROTO_DONE;
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}
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bzero(&rip6src, sizeof(rip6src));
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rip6src.sin6_len = sizeof(struct sockaddr_in6);
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rip6src.sin6_family = AF_INET6;
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#if 0 /*XXX inbound flowlabel */
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rip6src.sin6_flowinfo = ip6->ip6_flow & IPV6_FLOWINFO_MASK;
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#endif
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/* KAME hack: recover scopeid */
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(void)in6_recoverscope(&rip6src, &ip6->ip6_src, m->m_pkthdr.rcvif);
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for (in6p = rawin6pcb.in6p_next;
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in6p != &rawin6pcb; in6p = in6p->in6p_next)
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{
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if (in6p->in6p_ip6.ip6_nxt &&
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in6p->in6p_ip6.ip6_nxt != proto)
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continue;
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if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr) &&
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!IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, &ip6->ip6_dst))
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continue;
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if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr) &&
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!IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, &ip6->ip6_src))
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continue;
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if (in6p->in6p_cksum != -1
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&& in6_cksum(m, ip6->ip6_nxt, *offp, m->m_pkthdr.len - *offp))
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{
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/* XXX bark something */
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continue;
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}
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if (last) {
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struct mbuf *n;
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if ((n = m_copy(m, 0, (int)M_COPYALL)) != NULL) {
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if (last->in6p_flags & IN6P_CONTROLOPTS)
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ip6_savecontrol(last, &opts, ip6, n);
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/* strip intermediate headers */
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m_adj(n, *offp);
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if (sbappendaddr(&last->in6p_socket->so_rcv,
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(struct sockaddr *)&rip6src,
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n, opts) == 0) {
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/* should notify about lost packet */
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m_freem(n);
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if (opts)
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m_freem(opts);
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} else
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sorwakeup(last->in6p_socket);
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opts = NULL;
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}
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}
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last = in6p;
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}
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if (last) {
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if (last->in6p_flags & IN6P_CONTROLOPTS)
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ip6_savecontrol(last, &opts, ip6, m);
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/* strip intermediate headers */
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m_adj(m, *offp);
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if (sbappendaddr(&last->in6p_socket->so_rcv,
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(struct sockaddr *)&rip6src, m, opts) == 0) {
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m_freem(m);
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if (opts)
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m_freem(opts);
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} else
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sorwakeup(last->in6p_socket);
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} else {
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if (proto == IPPROTO_NONE)
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m_freem(m);
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else {
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char *prvnxtp = ip6_get_prevhdr(m, *offp); /* XXX */
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in6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_protounknown);
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icmp6_error(m, ICMP6_PARAM_PROB,
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ICMP6_PARAMPROB_NEXTHEADER,
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prvnxtp - mtod(m, char *));
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}
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ip6stat.ip6s_delivered--;
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}
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return IPPROTO_DONE;
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}
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void
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rip6_ctlinput(cmd, sa, d)
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int cmd;
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struct sockaddr *sa;
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void *d;
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{
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struct ip6_hdr *ip6;
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struct mbuf *m;
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int off;
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struct ip6ctlparam *ip6cp = NULL;
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const struct sockaddr_in6 *sa6_src = NULL;
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void *cmdarg;
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void (*notify) __P((struct in6pcb *, int)) = in6_rtchange;
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int nxt;
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if (sa->sa_family != AF_INET6 ||
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sa->sa_len != sizeof(struct sockaddr_in6))
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return;
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if ((unsigned)cmd >= PRC_NCMDS)
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return;
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if (PRC_IS_REDIRECT(cmd))
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notify = in6_rtchange, d = NULL;
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else if (cmd == PRC_HOSTDEAD)
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d = NULL;
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else if (cmd == PRC_MSGSIZE)
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; /* special code is present, see below */
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else if (inet6ctlerrmap[cmd] == 0)
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return;
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/* if the parameter is from icmp6, decode it. */
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if (d != NULL) {
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ip6cp = (struct ip6ctlparam *)d;
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m = ip6cp->ip6c_m;
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ip6 = ip6cp->ip6c_ip6;
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off = ip6cp->ip6c_off;
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cmdarg = ip6cp->ip6c_cmdarg;
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sa6_src = ip6cp->ip6c_src;
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nxt = ip6cp->ip6c_nxt;
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} else {
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m = NULL;
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ip6 = NULL;
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cmdarg = NULL;
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sa6_src = &sa6_any;
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nxt = -1;
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}
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if (ip6 && cmd == PRC_MSGSIZE) {
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struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa;
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int valid = 0;
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struct in6pcb *in6p;
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/*
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* Check to see if we have a valid raw IPv6 socket
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* corresponding to the address in the ICMPv6 message
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* payload, and the protocol (ip6_nxt) meets the socket.
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* XXX chase extension headers, or pass final nxt value
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* from icmp6_notify_error()
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*/
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in6p = NULL;
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in6p = in6_pcblookup_connect(&rawin6pcb,
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&sa6->sin6_addr, 0,
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(struct in6_addr *)&sa6_src->sin6_addr, 0, 0);
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#if 0
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if (!in6p) {
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/*
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* As the use of sendto(2) is fairly popular,
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* we may want to allow non-connected pcb too.
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* But it could be too weak against attacks...
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* We should at least check if the local
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* address (= s) is really ours.
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*/
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in6p = in6_pcblookup_bind(&rawin6pcb,
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&sa6->sin6_addr, 0, 0))
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}
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#endif
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if (in6p && in6p->in6p_ip6.ip6_nxt &&
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in6p->in6p_ip6.ip6_nxt == nxt)
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valid++;
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/*
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* Depending on the value of "valid" and routing table
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* size (mtudisc_{hi,lo}wat), we will:
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* - recalcurate the new MTU and create the
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* corresponding routing entry, or
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* - ignore the MTU change notification.
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*/
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icmp6_mtudisc_update((struct ip6ctlparam *)d, valid);
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/*
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* regardless of if we called icmp6_mtudisc_update(),
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* we need to call in6_pcbnotify(), to notify path
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* MTU change to the userland (2292bis-02), because
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* some unconnected sockets may share the same
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* destination and want to know the path MTU.
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*/
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}
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(void) in6_pcbnotify(&rawin6pcb, sa, 0,
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(struct sockaddr *)sa6_src, 0, cmd, cmdarg, notify);
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}
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/*
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* Generate IPv6 header and pass packet to ip6_output.
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* Tack on options user may have setup with control call.
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*/
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int
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#if __STDC__
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rip6_output(struct mbuf *m, ...)
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#else
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rip6_output(m, va_alist)
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struct mbuf *m;
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va_dcl
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#endif
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{
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struct socket *so;
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struct sockaddr_in6 *dstsock;
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struct mbuf *control;
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struct in6_addr *dst;
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struct ip6_hdr *ip6;
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struct in6pcb *in6p;
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u_int plen = m->m_pkthdr.len;
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int error = 0;
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struct ip6_pktopts opt, *optp = NULL, *origoptp;
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struct ifnet *oifp = NULL;
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int type, code; /* for ICMPv6 output statistics only */
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int priv = 0;
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va_list ap;
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int flags;
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va_start(ap, m);
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so = va_arg(ap, struct socket *);
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dstsock = va_arg(ap, struct sockaddr_in6 *);
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control = va_arg(ap, struct mbuf *);
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va_end(ap);
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in6p = sotoin6pcb(so);
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priv = 0;
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{
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struct proc *p = curproc; /* XXX */
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if (p && !suser(p->p_ucred, &p->p_acflag))
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priv = 1;
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}
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dst = &dstsock->sin6_addr;
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if (control) {
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if ((error = ip6_setpktoptions(control, &opt, priv)) != 0)
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goto bad;
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optp = &opt;
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} else
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optp = in6p->in6p_outputopts;
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|
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/*
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* For an ICMPv6 packet, we should know its type and code
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* to update statistics.
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*/
|
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if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) {
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struct icmp6_hdr *icmp6;
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if (m->m_len < sizeof(struct icmp6_hdr) &&
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(m = m_pullup(m, sizeof(struct icmp6_hdr))) == NULL) {
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error = ENOBUFS;
|
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goto bad;
|
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}
|
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icmp6 = mtod(m, struct icmp6_hdr *);
|
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type = icmp6->icmp6_type;
|
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code = icmp6->icmp6_code;
|
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}
|
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|
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M_PREPEND(m, sizeof(*ip6), M_WAIT);
|
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ip6 = mtod(m, struct ip6_hdr *);
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|
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/*
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* Next header might not be ICMP6 but use its pseudo header anyway.
|
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*/
|
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ip6->ip6_dst = *dst;
|
|
|
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/* KAME hack: embed scopeid */
|
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origoptp = in6p->in6p_outputopts;
|
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in6p->in6p_outputopts = optp;
|
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if (in6_embedscope(&ip6->ip6_dst, dstsock, in6p, &oifp) != 0) {
|
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error = EINVAL;
|
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goto bad;
|
|
}
|
|
in6p->in6p_outputopts = origoptp;
|
|
|
|
/*
|
|
* Source address selection.
|
|
*/
|
|
{
|
|
struct in6_addr *in6a;
|
|
|
|
if ((in6a = in6_selectsrc(dstsock, optp,
|
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in6p->in6p_moptions,
|
|
&in6p->in6p_route,
|
|
&in6p->in6p_laddr,
|
|
&error)) == 0) {
|
|
if (error == 0)
|
|
error = EADDRNOTAVAIL;
|
|
goto bad;
|
|
}
|
|
ip6->ip6_src = *in6a;
|
|
if (in6p->in6p_route.ro_rt) {
|
|
/* what if oifp contradicts ? */
|
|
oifp = ifindex2ifnet[in6p->in6p_route.ro_rt->rt_ifp->if_index];
|
|
}
|
|
}
|
|
|
|
ip6->ip6_flow = in6p->in6p_flowinfo & IPV6_FLOWINFO_MASK;
|
|
ip6->ip6_vfc &= ~IPV6_VERSION_MASK;
|
|
ip6->ip6_vfc |= IPV6_VERSION;
|
|
#if 0 /* ip6_plen will be filled in ip6_output. */
|
|
ip6->ip6_plen = htons((u_short)plen);
|
|
#endif
|
|
ip6->ip6_nxt = in6p->in6p_ip6.ip6_nxt;
|
|
ip6->ip6_hlim = in6_selecthlim(in6p, oifp);
|
|
|
|
if (so->so_proto->pr_protocol == IPPROTO_ICMPV6 ||
|
|
in6p->in6p_cksum != -1) {
|
|
struct mbuf *n;
|
|
int off;
|
|
u_int16_t *p;
|
|
|
|
#define offsetof(type, member) ((size_t)(&((type *)0)->member)) /* XXX */
|
|
|
|
/* compute checksum */
|
|
if (so->so_proto->pr_protocol == IPPROTO_ICMPV6)
|
|
off = offsetof(struct icmp6_hdr, icmp6_cksum);
|
|
else
|
|
off = in6p->in6p_cksum;
|
|
if (plen < off + 1) {
|
|
error = EINVAL;
|
|
goto bad;
|
|
}
|
|
off += sizeof(struct ip6_hdr);
|
|
|
|
n = m;
|
|
while (n && n->m_len <= off) {
|
|
off -= n->m_len;
|
|
n = n->m_next;
|
|
}
|
|
if (!n)
|
|
goto bad;
|
|
p = (u_int16_t *)(mtod(n, caddr_t) + off);
|
|
*p = 0;
|
|
*p = in6_cksum(m, ip6->ip6_nxt, sizeof(*ip6), plen);
|
|
}
|
|
|
|
#ifdef IPSEC
|
|
if (ipsec_setsocket(m, so) != 0) {
|
|
error = ENOBUFS;
|
|
goto bad;
|
|
}
|
|
#endif /*IPSEC*/
|
|
|
|
flags = 0;
|
|
#ifdef IPV6_MINMTU
|
|
if (in6p->in6p_flags & IN6P_MINMTU)
|
|
flags |= IPV6_MINMTU;
|
|
#endif
|
|
|
|
error = ip6_output(m, optp, &in6p->in6p_route, flags,
|
|
in6p->in6p_moptions, &oifp);
|
|
if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) {
|
|
if (oifp)
|
|
icmp6_ifoutstat_inc(oifp, type, code);
|
|
icmp6stat.icp6s_outhist[type]++;
|
|
}
|
|
|
|
goto freectl;
|
|
|
|
bad:
|
|
if (m)
|
|
m_freem(m);
|
|
|
|
freectl:
|
|
if (optp == &opt && optp->ip6po_rthdr && optp->ip6po_route.ro_rt)
|
|
RTFREE(optp->ip6po_route.ro_rt);
|
|
if (control)
|
|
m_freem(control);
|
|
return(error);
|
|
}
|
|
|
|
/*
|
|
* Raw IPv6 socket option processing.
|
|
*/
|
|
int
|
|
rip6_ctloutput(op, so, level, optname, m)
|
|
int op;
|
|
struct socket *so;
|
|
int level, optname;
|
|
struct mbuf **m;
|
|
{
|
|
int error = 0;
|
|
|
|
switch (level) {
|
|
case IPPROTO_IPV6:
|
|
switch (optname) {
|
|
case MRT6_INIT:
|
|
case MRT6_DONE:
|
|
case MRT6_ADD_MIF:
|
|
case MRT6_DEL_MIF:
|
|
case MRT6_ADD_MFC:
|
|
case MRT6_DEL_MFC:
|
|
case MRT6_PIM:
|
|
if (op == PRCO_SETOPT) {
|
|
error = ip6_mrouter_set(optname, so, *m);
|
|
if (*m)
|
|
(void)m_free(*m);
|
|
} else if (op == PRCO_GETOPT) {
|
|
error = ip6_mrouter_get(optname, so, m);
|
|
} else
|
|
error = EINVAL;
|
|
return (error);
|
|
}
|
|
return (ip6_ctloutput(op, so, level, optname, m));
|
|
/* NOTREACHED */
|
|
|
|
case IPPROTO_ICMPV6:
|
|
/*
|
|
* XXX: is it better to call icmp6_ctloutput() directly
|
|
* from protosw?
|
|
*/
|
|
return(icmp6_ctloutput(op, so, level, optname, m));
|
|
|
|
default:
|
|
if (op == PRCO_SETOPT && *m)
|
|
(void)m_free(*m);
|
|
return(EINVAL);
|
|
}
|
|
}
|
|
|
|
extern u_long rip6_sendspace;
|
|
extern u_long rip6_recvspace;
|
|
|
|
int
|
|
rip6_usrreq(so, req, m, nam, control, p)
|
|
struct socket *so;
|
|
int req;
|
|
struct mbuf *m, *nam, *control;
|
|
struct proc *p;
|
|
{
|
|
struct in6pcb *in6p = sotoin6pcb(so);
|
|
int s;
|
|
int error = 0;
|
|
/* extern struct socket *ip6_mrouter; */ /* xxx */
|
|
int priv;
|
|
|
|
priv = 0;
|
|
if (p && !suser(p->p_ucred, &p->p_acflag))
|
|
priv++;
|
|
|
|
if (req == PRU_CONTROL)
|
|
return (in6_control(so, (u_long)m, (caddr_t)nam,
|
|
(struct ifnet *)control, p));
|
|
|
|
if (req == PRU_PURGEIF) {
|
|
in6_purgeif((struct ifnet *)control);
|
|
in6_pcbpurgeif(&rawin6pcb, (struct ifnet *)control);
|
|
return (0);
|
|
}
|
|
|
|
switch (req) {
|
|
case PRU_ATTACH:
|
|
if (in6p)
|
|
panic("rip6_attach");
|
|
if (!priv) {
|
|
error = EACCES;
|
|
break;
|
|
}
|
|
s = splsoftnet();
|
|
if ((error = soreserve(so, rip6_sendspace, rip6_recvspace)) != 0) {
|
|
splx(s);
|
|
break;
|
|
}
|
|
if ((error = in6_pcballoc(so, &rawin6pcb)) != 0)
|
|
{
|
|
splx(s);
|
|
break;
|
|
}
|
|
splx(s);
|
|
in6p = sotoin6pcb(so);
|
|
in6p->in6p_ip6.ip6_nxt = (long)nam;
|
|
in6p->in6p_cksum = -1;
|
|
#ifdef IPSEC
|
|
error = ipsec_init_policy(so, &in6p->in6p_sp);
|
|
if (error != 0) {
|
|
in6_pcbdetach(in6p);
|
|
break;
|
|
}
|
|
#endif /*IPSEC*/
|
|
|
|
MALLOC(in6p->in6p_icmp6filt, struct icmp6_filter *,
|
|
sizeof(struct icmp6_filter), M_PCB, M_NOWAIT);
|
|
if (in6p->in6p_icmp6filt == NULL) {
|
|
in6_pcbdetach(in6p);
|
|
error = ENOMEM;
|
|
break;
|
|
}
|
|
ICMP6_FILTER_SETPASSALL(in6p->in6p_icmp6filt);
|
|
break;
|
|
|
|
case PRU_DISCONNECT:
|
|
if ((so->so_state & SS_ISCONNECTED) == 0) {
|
|
error = ENOTCONN;
|
|
break;
|
|
}
|
|
in6p->in6p_faddr = in6addr_any;
|
|
so->so_state &= ~SS_ISCONNECTED; /* XXX */
|
|
break;
|
|
|
|
case PRU_ABORT:
|
|
soisdisconnected(so);
|
|
/* Fallthrough */
|
|
case PRU_DETACH:
|
|
if (in6p == 0)
|
|
panic("rip6_detach");
|
|
if (so == ip6_mrouter)
|
|
ip6_mrouter_done();
|
|
/* xxx: RSVP */
|
|
if (in6p->in6p_icmp6filt) {
|
|
FREE(in6p->in6p_icmp6filt, M_PCB);
|
|
in6p->in6p_icmp6filt = NULL;
|
|
}
|
|
in6_pcbdetach(in6p);
|
|
break;
|
|
|
|
case PRU_BIND:
|
|
{
|
|
struct sockaddr_in6 *addr = mtod(nam, struct sockaddr_in6 *);
|
|
struct ifaddr *ia = NULL;
|
|
|
|
if (nam->m_len != sizeof(*addr)) {
|
|
error = EINVAL;
|
|
break;
|
|
}
|
|
if ((ifnet.tqh_first == 0) || (addr->sin6_family != AF_INET6)) {
|
|
error = EADDRNOTAVAIL;
|
|
break;
|
|
}
|
|
#ifdef ENABLE_DEFAULT_SCOPE
|
|
if (addr->sin6_scope_id == 0) /* not change if specified */
|
|
addr->sin6_scope_id =
|
|
scope6_addr2default(&addr->sin6_addr);
|
|
#endif
|
|
/*
|
|
* we don't support mapped address here, it would confuse
|
|
* users so reject it
|
|
*/
|
|
if (IN6_IS_ADDR_V4MAPPED(&addr->sin6_addr)) {
|
|
error = EADDRNOTAVAIL;
|
|
break;
|
|
}
|
|
/*
|
|
* Currently, ifa_ifwithaddr tends to fail for a link-local
|
|
* address, since it implicitly expects that the link ID
|
|
* for the address is embedded in the sin6_addr part.
|
|
* For now, we'd rather keep this "as is". We'll eventually fix
|
|
* this in a more natural way.
|
|
*/
|
|
if (!IN6_IS_ADDR_UNSPECIFIED(&addr->sin6_addr) &&
|
|
(ia = ifa_ifwithaddr((struct sockaddr *)addr)) == 0) {
|
|
error = EADDRNOTAVAIL;
|
|
break;
|
|
}
|
|
if (ia &&
|
|
((struct in6_ifaddr *)ia)->ia6_flags &
|
|
(IN6_IFF_ANYCAST|IN6_IFF_NOTREADY|
|
|
IN6_IFF_DETACHED|IN6_IFF_DEPRECATED)) {
|
|
error = EADDRNOTAVAIL;
|
|
break;
|
|
}
|
|
in6p->in6p_laddr = addr->sin6_addr;
|
|
break;
|
|
}
|
|
|
|
case PRU_CONNECT:
|
|
{
|
|
struct sockaddr_in6 *addr = mtod(nam, struct sockaddr_in6 *);
|
|
struct in6_addr *in6a = NULL;
|
|
#ifdef ENABLE_DEFAULT_SCOPE
|
|
struct sockaddr_in6 sin6;
|
|
#endif
|
|
|
|
if (nam->m_len != sizeof(*addr)) {
|
|
error = EINVAL;
|
|
break;
|
|
}
|
|
if (ifnet.tqh_first == 0)
|
|
{
|
|
error = EADDRNOTAVAIL;
|
|
break;
|
|
}
|
|
if (addr->sin6_family != AF_INET6) {
|
|
error = EAFNOSUPPORT;
|
|
break;
|
|
}
|
|
|
|
#ifdef ENABLE_DEFAULT_SCOPE
|
|
if (addr->sin6_scope_id == 0) {
|
|
/* protect *addr */
|
|
sin6 = *addr;
|
|
addr = &sin6;
|
|
addr->sin6_scope_id =
|
|
scope6_addr2default(&addr->sin6_addr);
|
|
}
|
|
#endif
|
|
|
|
/* Source address selection. XXX: need pcblookup? */
|
|
in6a = in6_selectsrc(addr, in6p->in6p_outputopts,
|
|
in6p->in6p_moptions,
|
|
&in6p->in6p_route,
|
|
&in6p->in6p_laddr,
|
|
&error);
|
|
if (in6a == NULL) {
|
|
if (error == 0)
|
|
error = EADDRNOTAVAIL;
|
|
break;
|
|
}
|
|
in6p->in6p_laddr = *in6a;
|
|
in6p->in6p_faddr = addr->sin6_addr;
|
|
soisconnected(so);
|
|
break;
|
|
}
|
|
|
|
case PRU_CONNECT2:
|
|
error = EOPNOTSUPP;
|
|
break;
|
|
|
|
/*
|
|
* Mark the connection as being incapable of futther input.
|
|
*/
|
|
case PRU_SHUTDOWN:
|
|
socantsendmore(so);
|
|
break;
|
|
/*
|
|
* Ship a packet out. The appropriate raw output
|
|
* routine handles any messaging necessary.
|
|
*/
|
|
case PRU_SEND:
|
|
{
|
|
struct sockaddr_in6 tmp;
|
|
struct sockaddr_in6 *dst;
|
|
|
|
/* always copy sockaddr to avoid overwrites */
|
|
if (so->so_state & SS_ISCONNECTED) {
|
|
if (nam) {
|
|
error = EISCONN;
|
|
break;
|
|
}
|
|
/* XXX */
|
|
bzero(&tmp, sizeof(tmp));
|
|
tmp.sin6_family = AF_INET6;
|
|
tmp.sin6_len = sizeof(struct sockaddr_in6);
|
|
bcopy(&in6p->in6p_faddr, &tmp.sin6_addr,
|
|
sizeof(struct in6_addr));
|
|
dst = &tmp;
|
|
} else {
|
|
if (nam == NULL) {
|
|
error = ENOTCONN;
|
|
break;
|
|
}
|
|
tmp = *mtod(nam, struct sockaddr_in6 *);
|
|
dst = &tmp;
|
|
}
|
|
#ifdef ENABLE_DEFAULT_SCOPE
|
|
if (dst->sin6_scope_id == 0) {
|
|
dst->sin6_scope_id =
|
|
scope6_addr2default(&dst->sin6_addr);
|
|
}
|
|
#endif
|
|
error = rip6_output(m, so, dst, control);
|
|
m = NULL;
|
|
break;
|
|
}
|
|
|
|
case PRU_SENSE:
|
|
/*
|
|
* stat: don't bother with a blocksize
|
|
*/
|
|
return(0);
|
|
/*
|
|
* Not supported.
|
|
*/
|
|
case PRU_RCVOOB:
|
|
case PRU_RCVD:
|
|
case PRU_LISTEN:
|
|
case PRU_ACCEPT:
|
|
case PRU_SENDOOB:
|
|
error = EOPNOTSUPP;
|
|
break;
|
|
|
|
case PRU_SOCKADDR:
|
|
in6_setsockaddr(in6p, nam);
|
|
break;
|
|
|
|
case PRU_PEERADDR:
|
|
in6_setpeeraddr(in6p, nam);
|
|
break;
|
|
|
|
default:
|
|
panic("rip6_usrreq");
|
|
}
|
|
if (m != NULL)
|
|
m_freem(m);
|
|
return(error);
|
|
}
|