2a0c503e7a
This is because calls with M_WAIT (now M_TRYWAIT) may not wait forever when nothing is available for allocation, and may end up returning NULL. Hopefully we now communicate more of the right thing to developers and make it very clear that it's necessary to check whether calls with M_(TRY)WAIT also resulted in a failed allocation. M_TRYWAIT basically means "try harder, block if necessary, but don't necessarily wait forever." The time spent blocking is tunable with the kern.ipc.mbuf_wait sysctl. M_WAIT is now deprecated but still defined for the next little while. * Fix a typo in a comment in mbuf.h * Fix some code that was actually passing the mbuf subsystem's M_WAIT to malloc(). Made it pass M_WAITOK instead. If we were ever to redefine the value of the M_WAIT flag, this could have became a big problem.
712 lines
18 KiB
C
712 lines
18 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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* 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/proc.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 <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/in_systm.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 <netinet/in_pcb.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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#include <netinet6/ipsec6.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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#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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/*
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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 = 0;
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struct sockaddr_in6 rip6src;
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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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/* 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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}
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#endif
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init_sin6(&rip6src, m); /* general init */
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LIST_FOREACH(in6p, &ripcb, inp_list) {
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if ((in6p->in6p_vflag & INP_IPV6) == 0)
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continue;
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if (in6p->in6p_ip6_nxt &&
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in6p->in6p_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,
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m->m_pkthdr.len - *offp)) {
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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 = m_copy(m, 0, (int)M_COPYALL);
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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, &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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last->in6p_socket->so_options & SO_TIMESTAMP)
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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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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 sockaddr_in6 sa6;
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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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void (*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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struct ip6ctlparam *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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} else {
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m = NULL;
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ip6 = NULL;
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}
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/* translate addresses into internal form */
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sa6 = *(struct sockaddr_in6 *)sa;
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if (IN6_IS_ADDR_LINKLOCAL(&sa6.sin6_addr) && m && m->m_pkthdr.rcvif)
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sa6.sin6_addr.s6_addr16[1] = htons(m->m_pkthdr.rcvif->if_index);
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if (ip6) {
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/*
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* XXX: We assume that when IPV6 is non NULL,
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* M and OFF are valid.
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*/
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struct in6_addr s;
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/* translate addresses into internal form */
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memcpy(&s, &ip6->ip6_src, sizeof(s));
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if (IN6_IS_ADDR_LINKLOCAL(&s))
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s.s6_addr16[1] = htons(m->m_pkthdr.rcvif->if_index);
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(void) in6_pcbnotify(&ripcb, (struct sockaddr *)&sa6,
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0, &s, 0, cmd, notify);
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} else
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(void) in6_pcbnotify(&ripcb, (struct sockaddr *)&sa6, 0,
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&zeroin6_addr, 0, cmd, 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 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 = 0;
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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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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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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_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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* 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_TRYWAIT);
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ip6 = mtod(m, struct ip6_hdr *);
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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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/*
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* If the scope of the destination is link-local, embed the interface
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* index in the address.
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*
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* XXX advanced-api value overrides sin6_scope_id
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*/
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if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_dst)) {
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struct in6_pktinfo *pi;
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/*
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* XXX Boundary check is assumed to be already done in
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* ip6_setpktoptions().
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*/
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if (optp && (pi = optp->ip6po_pktinfo) && pi->ipi6_ifindex) {
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ip6->ip6_dst.s6_addr16[1] = htons(pi->ipi6_ifindex);
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oifp = ifindex2ifnet[pi->ipi6_ifindex];
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} else if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst) &&
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in6p->in6p_moptions &&
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in6p->in6p_moptions->im6o_multicast_ifp) {
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oifp = in6p->in6p_moptions->im6o_multicast_ifp;
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ip6->ip6_dst.s6_addr16[1] = htons(oifp->if_index);
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} else if (dstsock->sin6_scope_id) {
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/* boundary check */
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if (dstsock->sin6_scope_id < 0
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|| if_index < dstsock->sin6_scope_id) {
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error = ENXIO; /* XXX EINVAL? */
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goto bad;
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}
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ip6->ip6_dst.s6_addr16[1]
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= htons(dstsock->sin6_scope_id & 0xffff);/*XXX*/
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}
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}
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/*
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* Source address selection.
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*/
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{
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struct in6_addr *in6a;
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if ((in6a = in6_selectsrc(dstsock, optp,
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in6p->in6p_moptions,
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&in6p->in6p_route,
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&in6p->in6p_laddr,
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&error)) == 0) {
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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 (in6p->in6p_route.ro_rt)
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oifp = ifindex2ifnet[in6p->in6p_route.ro_rt->rt_ifp->if_index];
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}
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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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|
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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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}
|
|
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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#ifdef IPSEC
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ipsec_setsocket(m, so);
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#endif /*IPSEC*/
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error = ip6_output(m, optp, &in6p->in6p_route, 0,
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in6p->in6p_moptions, &oifp);
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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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}
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|
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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 (optp == &opt && optp->ip6po_rthdr && optp->ip6po_route.ro_rt)
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RTFREE(optp->ip6po_route.ro_rt);
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if (control)
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m_freem(control);
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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;
|
|
struct sockopt *sopt;
|
|
{
|
|
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;
|
|
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;
|
|
default:
|
|
error = ip6_ctloutput(so, sopt);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
rip6_attach(struct socket *so, int proto, struct proc *p)
|
|
{
|
|
struct inpcb *inp;
|
|
int error, s;
|
|
|
|
inp = sotoinpcb(so);
|
|
if (inp)
|
|
panic("rip6_attach");
|
|
if (p && (error = suser(p)) != 0)
|
|
return error;
|
|
|
|
error = soreserve(so, rip_sendspace, rip_recvspace);
|
|
if (error)
|
|
return error;
|
|
s = splnet();
|
|
error = in_pcballoc(so, &ripcbinfo, p);
|
|
splx(s);
|
|
if (error)
|
|
return error;
|
|
inp = (struct inpcb *)so->so_pcb;
|
|
inp->inp_vflag |= INP_IPV6;
|
|
inp->in6p_ip6_nxt = (long)proto;
|
|
inp->in6p_hops = -1; /* use kernel default */
|
|
inp->in6p_cksum = -1;
|
|
#ifdef IPSEC
|
|
error = ipsec_init_policy(so, &inp->in6p_sp);
|
|
if (error != 0) {
|
|
in6_pcbdetach(inp);
|
|
return (error);
|
|
}
|
|
#endif /*IPSEC*/
|
|
MALLOC(inp->in6p_icmp6filt, struct icmp6_filter *,
|
|
sizeof(struct icmp6_filter), M_PCB, M_NOWAIT);
|
|
ICMP6_FILTER_SETPASSALL(inp->in6p_icmp6filt);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
rip6_detach(struct socket *so)
|
|
{
|
|
struct inpcb *inp;
|
|
|
|
inp = sotoinpcb(so);
|
|
if (inp == 0)
|
|
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;
|
|
}
|
|
in6_pcbdetach(inp);
|
|
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 proc *p)
|
|
{
|
|
struct inpcb *inp = sotoinpcb(so);
|
|
struct sockaddr_in6 *addr = (struct sockaddr_in6 *)nam;
|
|
struct ifaddr *ia = NULL;
|
|
|
|
if (nam->sa_len != sizeof(*addr))
|
|
return EINVAL;
|
|
|
|
if (TAILQ_EMPTY(&ifnet) || addr->sin6_family != AF_INET6)
|
|
return EADDRNOTAVAIL;
|
|
#ifdef ENABLE_DEFAULT_SCOPE
|
|
if (addr->sin6_scope_id == 0) { /* not change if specified */
|
|
addr->sin6_scope_id = scope6_addr2default(&addr->sin6_addr);
|
|
}
|
|
#endif
|
|
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->in6p_laddr = addr->sin6_addr;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
rip6_connect(struct socket *so, struct sockaddr *nam, struct proc *p)
|
|
{
|
|
struct inpcb *inp = sotoinpcb(so);
|
|
struct sockaddr_in6 *addr = (struct sockaddr_in6 *)nam;
|
|
struct in6_addr *in6a = NULL;
|
|
int error = 0;
|
|
#ifdef ENABLE_DEFAULT_SCOPE
|
|
struct sockaddr_in6 tmp;
|
|
#endif
|
|
|
|
if (nam->sa_len != sizeof(*addr))
|
|
return EINVAL;
|
|
if (TAILQ_EMPTY(&ifnet))
|
|
return EADDRNOTAVAIL;
|
|
if (addr->sin6_family != AF_INET6)
|
|
return EAFNOSUPPORT;
|
|
#ifdef ENABLE_DEFAULT_SCOPE
|
|
if (addr->sin6_scope_id == 0) { /* not change if specified */
|
|
/* avoid overwrites */
|
|
tmp = *addr;
|
|
addr = &tmp;
|
|
addr->sin6_scope_id = scope6_addr2default(&addr->sin6_addr);
|
|
}
|
|
#endif
|
|
/* Source address selection. XXX: need pcblookup? */
|
|
in6a = in6_selectsrc(addr, inp->in6p_outputopts,
|
|
inp->in6p_moptions, &inp->in6p_route,
|
|
&inp->in6p_laddr, &error);
|
|
if (in6a == NULL)
|
|
return (error ? error : EADDRNOTAVAIL);
|
|
inp->in6p_laddr = *in6a;
|
|
inp->in6p_faddr = addr->sin6_addr;
|
|
soisconnected(so);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
rip6_shutdown(struct socket *so)
|
|
{
|
|
socantsendmore(so);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
rip6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
|
|
struct mbuf *control, struct proc *p)
|
|
{
|
|
struct inpcb *inp = sotoinpcb(so);
|
|
struct sockaddr_in6 tmp;
|
|
struct sockaddr_in6 *dst;
|
|
|
|
/* always copy sockaddr to avoid overwrites */
|
|
if (so->so_state & SS_ISCONNECTED) {
|
|
if (nam) {
|
|
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) {
|
|
m_freem(m);
|
|
return ENOTCONN;
|
|
}
|
|
tmp = *(struct sockaddr_in6 *)nam;
|
|
dst = &tmp;
|
|
}
|
|
#ifdef ENABLE_DEFAULT_SCOPE
|
|
if (dst->sin6_scope_id == 0) { /* not change if specified */
|
|
dst->sin6_scope_id = scope6_addr2default(&dst->sin6_addr);
|
|
}
|
|
#endif
|
|
return rip6_output(m, so, dst, control);
|
|
}
|
|
|
|
struct pr_usrreqs rip6_usrreqs = {
|
|
rip6_abort, pru_accept_notsupp, rip6_attach, rip6_bind, rip6_connect,
|
|
pru_connect2_notsupp, in6_control, rip6_detach, rip6_disconnect,
|
|
pru_listen_notsupp, in6_setpeeraddr, pru_rcvd_notsupp,
|
|
pru_rcvoob_notsupp, rip6_send, pru_sense_null, rip6_shutdown,
|
|
in6_setsockaddr, sosend, soreceive, sopoll
|
|
};
|