808 lines
20 KiB
C
808 lines
20 KiB
C
/*-
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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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* $FreeBSD$
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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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* 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 "opt_inet6.h"
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#include <sys/param.h>
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#include <sys/errno.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/mbuf.h>
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#include <sys/proc.h>
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#include <sys/protosw.h>
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#include <sys/signalvar.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/sx.h>
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#include <sys/systm.h>
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#include <sys/syslog.h>
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#include <net/if.h>
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#include <net/if_types.h>
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#include <net/route.h>
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#include <netinet/in.h>
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#include <netinet/in_var.h>
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#include <netinet/in_systm.h>
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#include <netinet/icmp6.h>
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#include <netinet/in_pcb.h>
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#include <netinet/ip6.h>
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#include <netinet6/ip6protosw.h>
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#include <netinet6/ip6_mroute.h>
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#include <netinet6/in6_pcb.h>
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#include <netinet6/ip6_var.h>
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#include <netinet6/nd6.h>
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#include <netinet6/raw_ip6.h>
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#include <netinet6/scope6_var.h>
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#ifdef IPSEC
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#include <netinet6/ipsec.h>
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#include <netinet6/ipsec6.h>
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#endif /*IPSEC*/
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#ifdef FAST_IPSEC
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#include <netipsec/ipsec.h>
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#include <netipsec/ipsec6.h>
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#endif /* FAST_IPSEC */
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#include <machine/stdarg.h>
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#define satosin6(sa) ((struct sockaddr_in6 *)(sa))
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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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extern struct inpcbhead ripcb;
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extern struct inpcbinfo ripcbinfo;
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extern u_long rip_sendspace;
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extern u_long rip_recvspace;
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struct rip6stat rip6stat;
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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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register struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *);
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register struct inpcb *in6p;
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struct inpcb *last = 0;
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struct mbuf *opts = NULL;
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struct sockaddr_in6 fromsa;
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rip6stat.rip6s_ipackets++;
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if (faithprefix_p != NULL && (*faithprefix_p)(&ip6->ip6_dst)) {
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/* XXX send icmp6 host/port unreach? */
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m_freem(m);
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return IPPROTO_DONE;
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}
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init_sin6(&fromsa, m); /* general init */
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INP_INFO_RLOCK(&ripcbinfo);
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LIST_FOREACH(in6p, &ripcb, inp_list) {
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INP_LOCK(in6p);
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if ((in6p->in6p_vflag & INP_IPV6) == 0) {
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docontinue:
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INP_UNLOCK(in6p);
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continue;
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}
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if (in6p->in6p_ip6_nxt &&
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in6p->in6p_ip6_nxt != proto)
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goto docontinue;
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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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goto docontinue;
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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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goto docontinue;
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if (in6p->in6p_cksum != -1) {
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rip6stat.rip6s_isum++;
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if (in6_cksum(m, ip6->ip6_nxt, *offp,
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m->m_pkthdr.len - *offp)) {
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rip6stat.rip6s_badsum++;
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goto docontinue;
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}
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}
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if (last) {
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struct mbuf *n = m_copy(m, 0, (int)M_COPYALL);
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#if defined(IPSEC) || defined(FAST_IPSEC)
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/*
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* Check AH/ESP integrity.
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*/
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if (n && ipsec6_in_reject(n, last)) {
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m_freem(n);
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#ifdef IPSEC
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ipsec6stat.in_polvio++;
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#endif /*IPSEC*/
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/* do not inject data into pcb */
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} else
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#endif /*IPSEC || FAST_IPSEC*/
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if (n) {
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if (last->in6p_flags & IN6P_CONTROLOPTS ||
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last->in6p_socket->so_options & SO_TIMESTAMP)
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ip6_savecontrol(last, n, &opts);
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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 *)&fromsa,
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n, opts) == 0) {
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m_freem(n);
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if (opts)
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m_freem(opts);
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rip6stat.rip6s_fullsock++;
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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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INP_UNLOCK(last);
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}
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last = in6p;
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}
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#if defined(IPSEC) || defined(FAST_IPSEC)
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/*
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* Check AH/ESP integrity.
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*/
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if (last && ipsec6_in_reject(m, last)) {
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m_freem(m);
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#ifdef IPSEC
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ipsec6stat.in_polvio++;
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#endif /*IPSEC*/
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ip6stat.ip6s_delivered--;
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/* do not inject data into pcb */
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INP_UNLOCK(last);
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} else
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#endif /*IPSEC || FAST_IPSEC*/
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if (last) {
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if (last->in6p_flags & IN6P_CONTROLOPTS ||
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last->in6p_socket->so_options & SO_TIMESTAMP)
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ip6_savecontrol(last, m, &opts);
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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 *)&fromsa, 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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rip6stat.rip6s_fullsock++;
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} else
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sorwakeup(last->in6p_socket);
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INP_UNLOCK(last);
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} else {
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rip6stat.rip6s_nosock++;
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if (m->m_flags & M_MCAST)
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rip6stat.rip6s_nosockmcast++;
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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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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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INP_INFO_RUNLOCK(&ripcbinfo);
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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 = 0;
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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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struct inpcb *(*notify) __P((struct inpcb *, int)) = in6_rtchange;
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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 (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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} 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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}
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(void) in6_pcbnotify(&ripcbinfo, sa, 0,
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(const struct sockaddr *)sa6_src,
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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 mbuf *control;
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struct socket *so;
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struct sockaddr_in6 *dstsock;
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struct in6_addr *dst;
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struct ip6_hdr *ip6;
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struct inpcb *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;
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struct ifnet *oifp = NULL;
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int type = 0, code = 0; /* for ICMPv6 output statistics only */
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int priv = 0;
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int scope_ambiguous = 0;
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struct in6_addr *in6a;
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va_list ap;
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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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INP_LOCK(in6p);
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priv = 0;
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if (so->so_cred->cr_uid == 0)
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priv = 1;
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dst = &dstsock->sin6_addr;
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if (control) {
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if ((error = ip6_setpktopts(control, &opt,
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in6p->in6p_outputopts, priv, so->so_proto->pr_protocol))
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!= 0) {
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goto bad;
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}
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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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* Check and convert scope zone ID into internal form.
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* XXX: we may still need to determine the zone later.
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*/
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if (!(so->so_state & SS_ISCONNECTED)) {
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if (dstsock->sin6_scope_id == 0 && !ip6_use_defzone)
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scope_ambiguous = 1;
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if ((error = sa6_embedscope(dstsock, ip6_use_defzone)) != 0)
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goto bad;
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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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M_PREPEND(m, sizeof(*ip6), M_DONTWAIT);
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if (m == NULL) {
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error = ENOBUFS;
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goto bad;
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}
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ip6 = mtod(m, struct ip6_hdr *);
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/*
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* Source address selection.
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*/
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if ((in6a = in6_selectsrc(dstsock, optp, in6p->in6p_moptions, NULL,
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&in6p->in6p_laddr, &oifp, &error)) == NULL) {
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if (error == 0)
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error = EADDRNOTAVAIL;
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goto bad;
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}
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ip6->ip6_src = *in6a;
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if (oifp && scope_ambiguous) {
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/*
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* Application should provide a proper zone ID or the use of
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* default zone IDs should be enabled. Unfortunately, some
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* applications do not behave as it should, so we need a
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* workaround. Even if an appropriate ID is not determined
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* (when it's required), if we can determine the outgoing
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* interface. determine the zone ID based on the interface.
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*/
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error = in6_setscope(&dstsock->sin6_addr, oifp, NULL);
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if (error != 0)
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goto bad;
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}
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ip6->ip6_dst = dstsock->sin6_addr;
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/* fill in the rest of the IPv6 header fields */
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ip6->ip6_flow = (ip6->ip6_flow & ~IPV6_FLOWINFO_MASK) |
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(in6p->in6p_flowinfo & IPV6_FLOWINFO_MASK);
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ip6->ip6_vfc = (ip6->ip6_vfc & ~IPV6_VERSION_MASK) |
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(IPV6_VERSION & IPV6_VERSION_MASK);
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/* ip6_plen will be filled in ip6_output, so not fill it here. */
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ip6->ip6_nxt = in6p->in6p_ip6_nxt;
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ip6->ip6_hlim = in6_selecthlim(in6p, oifp);
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if (so->so_proto->pr_protocol == IPPROTO_ICMPV6 ||
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in6p->in6p_cksum != -1) {
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struct mbuf *n;
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int off;
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u_int16_t *p;
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/* compute checksum */
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if (so->so_proto->pr_protocol == IPPROTO_ICMPV6)
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off = offsetof(struct icmp6_hdr, icmp6_cksum);
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else
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off = in6p->in6p_cksum;
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if (plen < off + 1) {
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error = EINVAL;
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goto bad;
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}
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off += sizeof(struct ip6_hdr);
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n = m;
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while (n && n->m_len <= off) {
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off -= n->m_len;
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n = n->m_next;
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}
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if (!n)
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goto bad;
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p = (u_int16_t *)(mtod(n, caddr_t) + off);
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*p = 0;
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*p = in6_cksum(m, ip6->ip6_nxt, sizeof(*ip6), plen);
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}
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error = ip6_output(m, optp, NULL, 0, in6p->in6p_moptions, &oifp, in6p);
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if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) {
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if (oifp)
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icmp6_ifoutstat_inc(oifp, type, code);
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icmp6stat.icp6s_outhist[type]++;
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} else
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rip6stat.rip6s_opackets++;
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goto freectl;
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bad:
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if (m)
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m_freem(m);
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freectl:
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if (control) {
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ip6_clearpktopts(&opt, -1);
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m_freem(control);
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}
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INP_UNLOCK(in6p);
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return (error);
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}
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/*
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* Raw IPv6 socket option processing.
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*/
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int
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rip6_ctloutput(so, sopt)
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struct socket *so;
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struct sockopt *sopt;
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{
|
|
int error;
|
|
|
|
if (sopt->sopt_level == IPPROTO_ICMPV6)
|
|
/*
|
|
* XXX: is it better to call icmp6_ctloutput() directly
|
|
* from protosw?
|
|
*/
|
|
return (icmp6_ctloutput(so, sopt));
|
|
else if (sopt->sopt_level != IPPROTO_IPV6)
|
|
return (EINVAL);
|
|
|
|
error = 0;
|
|
|
|
switch (sopt->sopt_dir) {
|
|
case SOPT_GET:
|
|
switch (sopt->sopt_name) {
|
|
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:
|
|
error = ip6_mrouter_get(so, sopt);
|
|
break;
|
|
case IPV6_CHECKSUM:
|
|
error = ip6_raw_ctloutput(so, sopt);
|
|
break;
|
|
default:
|
|
error = ip6_ctloutput(so, sopt);
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case SOPT_SET:
|
|
switch (sopt->sopt_name) {
|
|
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:
|
|
error = ip6_mrouter_set(so, sopt);
|
|
break;
|
|
case IPV6_CHECKSUM:
|
|
error = ip6_raw_ctloutput(so, sopt);
|
|
break;
|
|
default:
|
|
error = ip6_ctloutput(so, sopt);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
rip6_attach(struct socket *so, int proto, struct thread *td)
|
|
{
|
|
struct inpcb *inp;
|
|
struct icmp6_filter *filter;
|
|
int error, s;
|
|
|
|
INP_INFO_WLOCK(&ripcbinfo);
|
|
inp = sotoinpcb(so);
|
|
if (inp) {
|
|
INP_INFO_WUNLOCK(&ripcbinfo);
|
|
panic("rip6_attach");
|
|
}
|
|
if (td && (error = suser(td)) != 0) {
|
|
INP_INFO_WUNLOCK(&ripcbinfo);
|
|
return error;
|
|
}
|
|
error = soreserve(so, rip_sendspace, rip_recvspace);
|
|
if (error) {
|
|
INP_INFO_WUNLOCK(&ripcbinfo);
|
|
return error;
|
|
}
|
|
MALLOC(filter, struct icmp6_filter *,
|
|
sizeof(struct icmp6_filter), M_PCB, M_NOWAIT);
|
|
if (filter == NULL)
|
|
return ENOMEM;
|
|
s = splnet();
|
|
error = in_pcballoc(so, &ripcbinfo, "raw6inp");
|
|
splx(s);
|
|
if (error) {
|
|
INP_INFO_WUNLOCK(&ripcbinfo);
|
|
FREE(filter, M_PCB);
|
|
return error;
|
|
}
|
|
inp = (struct inpcb *)so->so_pcb;
|
|
INP_LOCK(inp);
|
|
INP_INFO_WUNLOCK(&ripcbinfo);
|
|
inp->inp_vflag |= INP_IPV6;
|
|
inp->in6p_ip6_nxt = (long)proto;
|
|
inp->in6p_hops = -1; /* use kernel default */
|
|
inp->in6p_cksum = -1;
|
|
inp->in6p_icmp6filt = filter;
|
|
ICMP6_FILTER_SETPASSALL(inp->in6p_icmp6filt);
|
|
INP_UNLOCK(inp);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
rip6_detach(struct socket *so)
|
|
{
|
|
struct inpcb *inp;
|
|
|
|
INP_INFO_WLOCK(&ripcbinfo);
|
|
inp = sotoinpcb(so);
|
|
if (inp == 0) {
|
|
INP_INFO_WUNLOCK(&ripcbinfo);
|
|
panic("rip6_detach");
|
|
}
|
|
/* xxx: RSVP */
|
|
if (so == ip6_mrouter)
|
|
ip6_mrouter_done();
|
|
if (inp->in6p_icmp6filt) {
|
|
FREE(inp->in6p_icmp6filt, M_PCB);
|
|
inp->in6p_icmp6filt = NULL;
|
|
}
|
|
INP_LOCK(inp);
|
|
in6_pcbdetach(inp);
|
|
INP_INFO_WUNLOCK(&ripcbinfo);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
rip6_abort(struct socket *so)
|
|
{
|
|
soisdisconnected(so);
|
|
return rip6_detach(so);
|
|
}
|
|
|
|
static int
|
|
rip6_disconnect(struct socket *so)
|
|
{
|
|
struct inpcb *inp = sotoinpcb(so);
|
|
|
|
if ((so->so_state & SS_ISCONNECTED) == 0)
|
|
return ENOTCONN;
|
|
inp->in6p_faddr = in6addr_any;
|
|
return rip6_abort(so);
|
|
}
|
|
|
|
static int
|
|
rip6_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
|
|
{
|
|
struct inpcb *inp = sotoinpcb(so);
|
|
struct sockaddr_in6 *addr = (struct sockaddr_in6 *)nam;
|
|
struct ifaddr *ia = NULL;
|
|
int error = 0;
|
|
|
|
if (nam->sa_len != sizeof(*addr))
|
|
return EINVAL;
|
|
if (TAILQ_EMPTY(&ifnet) || addr->sin6_family != AF_INET6)
|
|
return EADDRNOTAVAIL;
|
|
if ((error = sa6_embedscope(addr, ip6_use_defzone)) != 0)
|
|
return(error);
|
|
|
|
if (!IN6_IS_ADDR_UNSPECIFIED(&addr->sin6_addr) &&
|
|
(ia = ifa_ifwithaddr((struct sockaddr *)addr)) == 0)
|
|
return EADDRNOTAVAIL;
|
|
if (ia &&
|
|
((struct in6_ifaddr *)ia)->ia6_flags &
|
|
(IN6_IFF_ANYCAST|IN6_IFF_NOTREADY|
|
|
IN6_IFF_DETACHED|IN6_IFF_DEPRECATED)) {
|
|
return (EADDRNOTAVAIL);
|
|
}
|
|
INP_INFO_WLOCK(&ripcbinfo);
|
|
INP_LOCK(inp);
|
|
inp->in6p_laddr = addr->sin6_addr;
|
|
INP_UNLOCK(inp);
|
|
INP_INFO_WUNLOCK(&ripcbinfo);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
rip6_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
|
|
{
|
|
struct inpcb *inp = sotoinpcb(so);
|
|
struct sockaddr_in6 *addr = (struct sockaddr_in6 *)nam;
|
|
struct in6_addr *in6a = NULL;
|
|
struct ifnet *ifp = NULL;
|
|
int error = 0, scope_ambiguous = 0;
|
|
|
|
if (nam->sa_len != sizeof(*addr))
|
|
return EINVAL;
|
|
if (TAILQ_EMPTY(&ifnet))
|
|
return EADDRNOTAVAIL;
|
|
if (addr->sin6_family != AF_INET6)
|
|
return EAFNOSUPPORT;
|
|
|
|
/*
|
|
* Application should provide a proper zone ID or the use of
|
|
* default zone IDs should be enabled. Unfortunately, some
|
|
* applications do not behave as it should, so we need a
|
|
* workaround. Even if an appropriate ID is not determined,
|
|
* we'll see if we can determine the outgoing interface. If we
|
|
* can, determine the zone ID based on the interface below.
|
|
*/
|
|
if (addr->sin6_scope_id == 0 && !ip6_use_defzone)
|
|
scope_ambiguous = 1;
|
|
if ((error = sa6_embedscope(addr, ip6_use_defzone)) != 0)
|
|
return(error);
|
|
|
|
INP_INFO_WLOCK(&ripcbinfo);
|
|
INP_LOCK(inp);
|
|
/* Source address selection. XXX: need pcblookup? */
|
|
in6a = in6_selectsrc(addr, inp->in6p_outputopts,
|
|
inp->in6p_moptions, NULL,
|
|
&inp->in6p_laddr, &ifp, &error);
|
|
if (in6a == NULL) {
|
|
INP_UNLOCK(inp);
|
|
INP_INFO_WUNLOCK(&ripcbinfo);
|
|
return (error ? error : EADDRNOTAVAIL);
|
|
}
|
|
|
|
/* XXX: see above */
|
|
if (ifp && scope_ambiguous &&
|
|
(error = in6_setscope(&addr->sin6_addr, ifp, NULL)) != 0) {
|
|
INP_UNLOCK(inp);
|
|
INP_INFO_WUNLOCK(&ripcbinfo);
|
|
return(error);
|
|
}
|
|
inp->in6p_faddr = addr->sin6_addr;
|
|
inp->in6p_laddr = *in6a;
|
|
soisconnected(so);
|
|
INP_UNLOCK(inp);
|
|
INP_INFO_WUNLOCK(&ripcbinfo);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
rip6_shutdown(struct socket *so)
|
|
{
|
|
struct inpcb *inp;
|
|
|
|
INP_INFO_RLOCK(&ripcbinfo);
|
|
inp = sotoinpcb(so);
|
|
INP_LOCK(inp);
|
|
INP_INFO_RUNLOCK(&ripcbinfo);
|
|
socantsendmore(so);
|
|
INP_UNLOCK(inp);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
rip6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
|
|
struct mbuf *control, struct thread *td)
|
|
{
|
|
struct inpcb *inp = sotoinpcb(so);
|
|
struct sockaddr_in6 tmp;
|
|
struct sockaddr_in6 *dst;
|
|
int ret;
|
|
|
|
INP_INFO_WLOCK(&ripcbinfo);
|
|
/* always copy sockaddr to avoid overwrites */
|
|
/* Unlocked read. */
|
|
if (so->so_state & SS_ISCONNECTED) {
|
|
if (nam) {
|
|
INP_INFO_WUNLOCK(&ripcbinfo);
|
|
m_freem(m);
|
|
return EISCONN;
|
|
}
|
|
/* XXX */
|
|
bzero(&tmp, sizeof(tmp));
|
|
tmp.sin6_family = AF_INET6;
|
|
tmp.sin6_len = sizeof(struct sockaddr_in6);
|
|
bcopy(&inp->in6p_faddr, &tmp.sin6_addr,
|
|
sizeof(struct in6_addr));
|
|
dst = &tmp;
|
|
} else {
|
|
if (nam == NULL) {
|
|
INP_INFO_WUNLOCK(&ripcbinfo);
|
|
m_freem(m);
|
|
return ENOTCONN;
|
|
}
|
|
if (nam->sa_len != sizeof(struct sockaddr_in6)) {
|
|
INP_INFO_WUNLOCK(&ripcbinfo);
|
|
m_freem(m);
|
|
return(EINVAL);
|
|
}
|
|
tmp = *(struct sockaddr_in6 *)nam;
|
|
dst = &tmp;
|
|
|
|
if (dst->sin6_family == AF_UNSPEC) {
|
|
/*
|
|
* XXX: we allow this case for backward
|
|
* compatibility to buggy applications that
|
|
* rely on old (and wrong) kernel behavior.
|
|
*/
|
|
log(LOG_INFO, "rip6 SEND: address family is "
|
|
"unspec. Assume AF_INET6\n");
|
|
dst->sin6_family = AF_INET6;
|
|
} else if (dst->sin6_family != AF_INET6) {
|
|
INP_INFO_WUNLOCK(&ripcbinfo);
|
|
m_freem(m);
|
|
return(EAFNOSUPPORT);
|
|
}
|
|
}
|
|
ret = rip6_output(m, so, dst, control);
|
|
INP_INFO_WUNLOCK(&ripcbinfo);
|
|
return (ret);
|
|
}
|
|
|
|
struct pr_usrreqs rip6_usrreqs = {
|
|
.pru_abort = rip6_abort,
|
|
.pru_attach = rip6_attach,
|
|
.pru_bind = rip6_bind,
|
|
.pru_connect = rip6_connect,
|
|
.pru_control = in6_control,
|
|
.pru_detach = rip6_detach,
|
|
.pru_disconnect = rip6_disconnect,
|
|
.pru_peeraddr = in6_setpeeraddr,
|
|
.pru_send = rip6_send,
|
|
.pru_shutdown = rip6_shutdown,
|
|
.pru_sockaddr = in6_setsockaddr,
|
|
};
|