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//==========================================================================
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//
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// src/sys/netinet/raw_ip.c
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//
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//==========================================================================
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//####BSDCOPYRIGHTBEGIN####
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//
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// -------------------------------------------
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//
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// Portions of this software may have been derived from OpenBSD,
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// FreeBSD or other sources, and are covered by the appropriate
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// copyright disclaimers included herein.
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//
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// Portions created by Red Hat are
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// Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
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//
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// -------------------------------------------
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//
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//####BSDCOPYRIGHTEND####
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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 8.7 (Berkeley) 5/15/95
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* $FreeBSD: src/sys/netinet/raw_ip.c,v 1.64.2.8 2001/07/29 19:32:40 ume Exp $
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*/
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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/protosw.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <net/if.h>
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#include <net/route.h>
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#define _IP_VHL
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/in_pcb.h>
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#include <netinet/in_var.h>
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#include <netinet/ip_var.h>
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#include <netinet/ip_mroute.h>
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#include <netinet/ip_fw.h>
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#ifdef IPSEC
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#include <netinet6/ipsec.h>
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#endif /*IPSEC*/
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#ifdef DUMMYNET
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#include <netinet/ip_dummynet.h>
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#endif
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struct inpcbhead ripcb;
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struct inpcbinfo ripcbinfo;
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/*
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* Nominal space allocated to a raw ip socket.
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*/
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#define RIPSNDQ 8192
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#define RIPRCVQ 8192
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/*
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* Raw interface to IP protocol.
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*/
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/*
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* Initialize raw connection block q.
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*/
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void
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rip_init()
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{
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LIST_INIT(&ripcb);
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ripcbinfo.listhead = &ripcb;
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/*
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* XXX We don't use the hash list for raw IP, but it's easier
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* to allocate a one entry hash list than it is to check all
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* over the place for hashbase == NULL.
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*/
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ripcbinfo.hashbase = hashinit(1, M_PCB, &ripcbinfo.hashmask);
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ripcbinfo.porthashbase = hashinit(1, M_PCB, &ripcbinfo.porthashmask);
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ripcbinfo.ipi_zone = zinit("ripcb", sizeof(struct inpcb),
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maxsockets, ZONE_INTERRUPT, 0);
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}
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static struct sockaddr_in ripsrc = { sizeof(ripsrc), AF_INET };
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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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void
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rip_input(m, off)
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struct mbuf *m;
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int off;
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{
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register struct ip *ip = mtod(m, struct ip *);
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register struct inpcb *inp;
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struct inpcb *last = 0;
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struct mbuf *opts = 0;
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int proto = ip->ip_p;
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ripsrc.sin_addr = ip->ip_src;
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LIST_FOREACH(inp, &ripcb, inp_list) {
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#ifdef INET6
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if ((inp->inp_vflag & INP_IPV4) == 0)
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continue;
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#endif
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if (inp->inp_ip_p && inp->inp_ip_p != proto)
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continue;
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if (inp->inp_laddr.s_addr &&
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inp->inp_laddr.s_addr != ip->ip_dst.s_addr)
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continue;
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if (inp->inp_faddr.s_addr &&
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inp->inp_faddr.s_addr != ip->ip_src.s_addr)
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continue;
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if (last) {
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struct mbuf *n = m_copy(m, 0, (int)M_COPYALL);
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#ifdef IPSEC
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/* check AH/ESP integrity. */
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if (n && ipsec4_in_reject_so(n, last->inp_socket)) {
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m_freem(n);
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ipsecstat.in_polvio++;
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/* do not inject data to pcb */
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} else
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#endif /*IPSEC*/
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if (n) {
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if (last->inp_flags & INP_CONTROLOPTS ||
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last->inp_socket->so_options & SO_TIMESTAMP)
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ip_savecontrol(last, &opts, ip, n);
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if (sbappendaddr(&last->inp_socket->so_rcv,
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(struct sockaddr *)&ripsrc, n,
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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->inp_socket);
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opts = 0;
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}
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}
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last = inp;
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}
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#ifdef IPSEC
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/* check AH/ESP integrity. */
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if (last && ipsec4_in_reject_so(m, last->inp_socket)) {
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m_freem(m);
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ipsecstat.in_polvio++;
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ipstat.ips_delivered--;
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/* do not inject data to pcb */
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} else
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#endif /*IPSEC*/
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if (last) {
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| 189 |
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if (last->inp_flags & INP_CONTROLOPTS ||
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last->inp_socket->so_options & SO_TIMESTAMP)
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ip_savecontrol(last, &opts, ip, m);
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if (sbappendaddr(&last->inp_socket->so_rcv,
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| 193 |
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(struct sockaddr *)&ripsrc, m, opts) == 0) {
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| 194 |
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m_freem(m);
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| 195 |
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if (opts)
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| 196 |
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m_freem(opts);
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| 197 |
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} else
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| 198 |
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sorwakeup(last->inp_socket);
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| 199 |
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} else {
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| 200 |
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m_freem(m);
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| 201 |
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ipstat.ips_noproto++;
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| 202 |
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ipstat.ips_delivered--;
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| 203 |
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}
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| 204 |
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}
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| 205 |
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| 206 |
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/*
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| 207 |
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* Generate IP header and pass packet to ip_output.
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| 208 |
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* Tack on options user may have setup with control call.
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| 209 |
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*/
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| 210 |
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int
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| 211 |
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rip_output(m, so, dst)
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| 212 |
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struct mbuf *m;
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| 213 |
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struct socket *so;
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| 214 |
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u_long dst;
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| 215 |
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{
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| 216 |
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register struct ip *ip;
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| 217 |
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register struct inpcb *inp = sotoinpcb(so);
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| 218 |
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int flags = (so->so_options & SO_DONTROUTE) | IP_ALLOWBROADCAST;
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| 219 |
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| 220 |
|
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/*
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| 221 |
|
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* If the user handed us a complete IP packet, use it.
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| 222 |
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* Otherwise, allocate an mbuf for a header and fill it in.
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| 223 |
|
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*/
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| 224 |
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if ((inp->inp_flags & INP_HDRINCL) == 0) {
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| 225 |
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if (m->m_pkthdr.len + sizeof(struct ip) > IP_MAXPACKET) {
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| 226 |
|
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m_freem(m);
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| 227 |
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return(EMSGSIZE);
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| 228 |
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}
|
| 229 |
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M_PREPEND(m, sizeof(struct ip), M_WAIT);
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| 230 |
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ip = mtod(m, struct ip *);
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| 231 |
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ip->ip_tos = inp->inp_ip_tos;
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| 232 |
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ip->ip_off = 0;
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| 233 |
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ip->ip_p = inp->inp_ip_p;
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| 234 |
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ip->ip_len = m->m_pkthdr.len;
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| 235 |
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ip->ip_src = inp->inp_laddr;
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| 236 |
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ip->ip_dst.s_addr = dst;
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| 237 |
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ip->ip_ttl = inp->inp_ip_ttl;
|
| 238 |
|
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} else {
|
| 239 |
|
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if (m->m_pkthdr.len > IP_MAXPACKET) {
|
| 240 |
|
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m_freem(m);
|
| 241 |
|
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return(EMSGSIZE);
|
| 242 |
|
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}
|
| 243 |
|
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ip = mtod(m, struct ip *);
|
| 244 |
|
|
/* don't allow both user specified and setsockopt options,
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| 245 |
|
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and don't allow packet length sizes that will crash */
|
| 246 |
|
|
if (((IP_VHL_HL(ip->ip_vhl) != (sizeof (*ip) >> 2))
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| 247 |
|
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&& inp->inp_options)
|
| 248 |
|
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|| (ip->ip_len > m->m_pkthdr.len)
|
| 249 |
|
|
|| (ip->ip_len < (IP_VHL_HL(ip->ip_vhl) << 2))) {
|
| 250 |
|
|
m_freem(m);
|
| 251 |
|
|
return EINVAL;
|
| 252 |
|
|
}
|
| 253 |
|
|
if (ip->ip_id == 0)
|
| 254 |
|
|
#ifdef RANDOM_IP_ID
|
| 255 |
|
|
ip->ip_id = ip_randomid();
|
| 256 |
|
|
#else
|
| 257 |
|
|
ip->ip_id = htons(ip_id++);
|
| 258 |
|
|
#endif
|
| 259 |
|
|
/* XXX prevent ip_output from overwriting header fields */
|
| 260 |
|
|
flags |= IP_RAWOUTPUT;
|
| 261 |
|
|
ipstat.ips_rawout++;
|
| 262 |
|
|
}
|
| 263 |
|
|
|
| 264 |
|
|
#ifdef IPSEC
|
| 265 |
|
|
if (ipsec_setsocket(m, so) != 0) {
|
| 266 |
|
|
m_freem(m);
|
| 267 |
|
|
return ENOBUFS;
|
| 268 |
|
|
}
|
| 269 |
|
|
#endif /*IPSEC*/
|
| 270 |
|
|
|
| 271 |
|
|
return (ip_output(m, inp->inp_options, &inp->inp_route, flags,
|
| 272 |
|
|
inp->inp_moptions));
|
| 273 |
|
|
}
|
| 274 |
|
|
|
| 275 |
|
|
/*
|
| 276 |
|
|
* Raw IP socket option processing.
|
| 277 |
|
|
*/
|
| 278 |
|
|
int
|
| 279 |
|
|
rip_ctloutput(so, sopt)
|
| 280 |
|
|
struct socket *so;
|
| 281 |
|
|
struct sockopt *sopt;
|
| 282 |
|
|
{
|
| 283 |
|
|
struct inpcb *inp = sotoinpcb(so);
|
| 284 |
|
|
int error, optval;
|
| 285 |
|
|
|
| 286 |
|
|
if (sopt->sopt_level != IPPROTO_IP)
|
| 287 |
|
|
return (EINVAL);
|
| 288 |
|
|
|
| 289 |
|
|
error = 0;
|
| 290 |
|
|
|
| 291 |
|
|
switch (sopt->sopt_dir) {
|
| 292 |
|
|
case SOPT_GET:
|
| 293 |
|
|
switch (sopt->sopt_name) {
|
| 294 |
|
|
case IP_HDRINCL:
|
| 295 |
|
|
optval = inp->inp_flags & INP_HDRINCL;
|
| 296 |
|
|
error = sooptcopyout(sopt, &optval, sizeof optval);
|
| 297 |
|
|
break;
|
| 298 |
|
|
|
| 299 |
|
|
case IP_FW_ADD:
|
| 300 |
|
|
case IP_FW_GET:
|
| 301 |
|
|
if (ip_fw_ctl_ptr == 0)
|
| 302 |
|
|
error = ENOPROTOOPT;
|
| 303 |
|
|
else
|
| 304 |
|
|
error = ip_fw_ctl_ptr(sopt);
|
| 305 |
|
|
break;
|
| 306 |
|
|
|
| 307 |
|
|
#ifdef DUMMYNET
|
| 308 |
|
|
case IP_DUMMYNET_GET:
|
| 309 |
|
|
if (ip_dn_ctl_ptr == NULL)
|
| 310 |
|
|
error = ENOPROTOOPT ;
|
| 311 |
|
|
else
|
| 312 |
|
|
error = ip_dn_ctl_ptr(sopt);
|
| 313 |
|
|
break ;
|
| 314 |
|
|
#endif /* DUMMYNET */
|
| 315 |
|
|
|
| 316 |
|
|
case MRT_INIT:
|
| 317 |
|
|
case MRT_DONE:
|
| 318 |
|
|
case MRT_ADD_VIF:
|
| 319 |
|
|
case MRT_DEL_VIF:
|
| 320 |
|
|
case MRT_ADD_MFC:
|
| 321 |
|
|
case MRT_DEL_MFC:
|
| 322 |
|
|
case MRT_VERSION:
|
| 323 |
|
|
case MRT_ASSERT:
|
| 324 |
|
|
error = ip_mrouter_get(so, sopt);
|
| 325 |
|
|
break;
|
| 326 |
|
|
|
| 327 |
|
|
default:
|
| 328 |
|
|
error = ip_ctloutput(so, sopt);
|
| 329 |
|
|
break;
|
| 330 |
|
|
}
|
| 331 |
|
|
break;
|
| 332 |
|
|
|
| 333 |
|
|
case SOPT_SET:
|
| 334 |
|
|
switch (sopt->sopt_name) {
|
| 335 |
|
|
case IP_HDRINCL:
|
| 336 |
|
|
error = sooptcopyin(sopt, &optval, sizeof optval,
|
| 337 |
|
|
sizeof optval);
|
| 338 |
|
|
if (error)
|
| 339 |
|
|
break;
|
| 340 |
|
|
if (optval)
|
| 341 |
|
|
inp->inp_flags |= INP_HDRINCL;
|
| 342 |
|
|
else
|
| 343 |
|
|
inp->inp_flags &= ~INP_HDRINCL;
|
| 344 |
|
|
break;
|
| 345 |
|
|
|
| 346 |
|
|
case IP_FW_ADD:
|
| 347 |
|
|
case IP_FW_DEL:
|
| 348 |
|
|
case IP_FW_FLUSH:
|
| 349 |
|
|
case IP_FW_ZERO:
|
| 350 |
|
|
case IP_FW_RESETLOG:
|
| 351 |
|
|
if (ip_fw_ctl_ptr == 0)
|
| 352 |
|
|
error = ENOPROTOOPT;
|
| 353 |
|
|
else
|
| 354 |
|
|
error = ip_fw_ctl_ptr(sopt);
|
| 355 |
|
|
break;
|
| 356 |
|
|
|
| 357 |
|
|
#ifdef DUMMYNET
|
| 358 |
|
|
case IP_DUMMYNET_CONFIGURE:
|
| 359 |
|
|
case IP_DUMMYNET_DEL:
|
| 360 |
|
|
case IP_DUMMYNET_FLUSH:
|
| 361 |
|
|
if (ip_dn_ctl_ptr == NULL)
|
| 362 |
|
|
error = ENOPROTOOPT ;
|
| 363 |
|
|
else
|
| 364 |
|
|
error = ip_dn_ctl_ptr(sopt);
|
| 365 |
|
|
break ;
|
| 366 |
|
|
#endif
|
| 367 |
|
|
|
| 368 |
|
|
case IP_RSVP_ON:
|
| 369 |
|
|
error = ip_rsvp_init(so);
|
| 370 |
|
|
break;
|
| 371 |
|
|
|
| 372 |
|
|
case IP_RSVP_OFF:
|
| 373 |
|
|
error = ip_rsvp_done();
|
| 374 |
|
|
break;
|
| 375 |
|
|
|
| 376 |
|
|
/* XXX - should be combined */
|
| 377 |
|
|
case IP_RSVP_VIF_ON:
|
| 378 |
|
|
error = ip_rsvp_vif_init(so, sopt);
|
| 379 |
|
|
break;
|
| 380 |
|
|
|
| 381 |
|
|
case IP_RSVP_VIF_OFF:
|
| 382 |
|
|
error = ip_rsvp_vif_done(so, sopt);
|
| 383 |
|
|
break;
|
| 384 |
|
|
|
| 385 |
|
|
case MRT_INIT:
|
| 386 |
|
|
case MRT_DONE:
|
| 387 |
|
|
case MRT_ADD_VIF:
|
| 388 |
|
|
case MRT_DEL_VIF:
|
| 389 |
|
|
case MRT_ADD_MFC:
|
| 390 |
|
|
case MRT_DEL_MFC:
|
| 391 |
|
|
case MRT_VERSION:
|
| 392 |
|
|
case MRT_ASSERT:
|
| 393 |
|
|
error = ip_mrouter_set(so, sopt);
|
| 394 |
|
|
break;
|
| 395 |
|
|
|
| 396 |
|
|
default:
|
| 397 |
|
|
error = ip_ctloutput(so, sopt);
|
| 398 |
|
|
break;
|
| 399 |
|
|
}
|
| 400 |
|
|
break;
|
| 401 |
|
|
}
|
| 402 |
|
|
|
| 403 |
|
|
return (error);
|
| 404 |
|
|
}
|
| 405 |
|
|
|
| 406 |
|
|
/*
|
| 407 |
|
|
* This function exists solely to receive the PRC_IFDOWN messages which
|
| 408 |
|
|
* are sent by if_down(). It looks for an ifaddr whose ifa_addr is sa,
|
| 409 |
|
|
* and calls in_ifadown() to remove all routes corresponding to that address.
|
| 410 |
|
|
* It also receives the PRC_IFUP messages from if_up() and reinstalls the
|
| 411 |
|
|
* interface routes.
|
| 412 |
|
|
*/
|
| 413 |
|
|
void
|
| 414 |
|
|
rip_ctlinput(cmd, sa, vip)
|
| 415 |
|
|
int cmd;
|
| 416 |
|
|
struct sockaddr *sa;
|
| 417 |
|
|
void *vip;
|
| 418 |
|
|
{
|
| 419 |
|
|
struct in_ifaddr *ia;
|
| 420 |
|
|
struct ifnet *ifp;
|
| 421 |
|
|
int err;
|
| 422 |
|
|
int flags;
|
| 423 |
|
|
|
| 424 |
|
|
switch (cmd) {
|
| 425 |
|
|
case PRC_IFDOWN:
|
| 426 |
|
|
for (ia = in_ifaddrhead.tqh_first; ia;
|
| 427 |
|
|
ia = ia->ia_link.tqe_next) {
|
| 428 |
|
|
if (ia->ia_ifa.ifa_addr == sa
|
| 429 |
|
|
&& (ia->ia_flags & IFA_ROUTE)) {
|
| 430 |
|
|
/*
|
| 431 |
|
|
* in_ifscrub kills the interface route.
|
| 432 |
|
|
*/
|
| 433 |
|
|
in_ifscrub(ia->ia_ifp, ia);
|
| 434 |
|
|
/*
|
| 435 |
|
|
* in_ifadown gets rid of all the rest of
|
| 436 |
|
|
* the routes. This is not quite the right
|
| 437 |
|
|
* thing to do, but at least if we are running
|
| 438 |
|
|
* a routing process they will come back.
|
| 439 |
|
|
*/
|
| 440 |
|
|
in_ifadown(&ia->ia_ifa, 0);
|
| 441 |
|
|
break;
|
| 442 |
|
|
}
|
| 443 |
|
|
}
|
| 444 |
|
|
break;
|
| 445 |
|
|
|
| 446 |
|
|
case PRC_IFUP:
|
| 447 |
|
|
for (ia = in_ifaddrhead.tqh_first; ia;
|
| 448 |
|
|
ia = ia->ia_link.tqe_next) {
|
| 449 |
|
|
if (ia->ia_ifa.ifa_addr == sa)
|
| 450 |
|
|
break;
|
| 451 |
|
|
}
|
| 452 |
|
|
if (ia == 0 || (ia->ia_flags & IFA_ROUTE))
|
| 453 |
|
|
return;
|
| 454 |
|
|
flags = RTF_UP;
|
| 455 |
|
|
ifp = ia->ia_ifa.ifa_ifp;
|
| 456 |
|
|
|
| 457 |
|
|
if ((ifp->if_flags & IFF_LOOPBACK)
|
| 458 |
|
|
|| (ifp->if_flags & IFF_POINTOPOINT))
|
| 459 |
|
|
flags |= RTF_HOST;
|
| 460 |
|
|
|
| 461 |
|
|
err = rtinit(&ia->ia_ifa, RTM_ADD, flags);
|
| 462 |
|
|
if (err == 0)
|
| 463 |
|
|
ia->ia_flags |= IFA_ROUTE;
|
| 464 |
|
|
break;
|
| 465 |
|
|
}
|
| 466 |
|
|
}
|
| 467 |
|
|
|
| 468 |
|
|
u_long rip_sendspace = RIPSNDQ;
|
| 469 |
|
|
u_long rip_recvspace = RIPRCVQ;
|
| 470 |
|
|
|
| 471 |
|
|
static int
|
| 472 |
|
|
rip_attach(struct socket *so, int proto, struct proc *p)
|
| 473 |
|
|
{
|
| 474 |
|
|
struct inpcb *inp;
|
| 475 |
|
|
int error, s;
|
| 476 |
|
|
|
| 477 |
|
|
inp = sotoinpcb(so);
|
| 478 |
|
|
if (inp)
|
| 479 |
|
|
panic("rip_attach");
|
| 480 |
|
|
|
| 481 |
|
|
error = soreserve(so, rip_sendspace, rip_recvspace);
|
| 482 |
|
|
if (error)
|
| 483 |
|
|
return error;
|
| 484 |
|
|
s = splnet();
|
| 485 |
|
|
error = in_pcballoc(so, &ripcbinfo, p);
|
| 486 |
|
|
splx(s);
|
| 487 |
|
|
if (error)
|
| 488 |
|
|
return error;
|
| 489 |
|
|
inp = (struct inpcb *)so->so_pcb;
|
| 490 |
|
|
inp->inp_vflag |= INP_IPV4;
|
| 491 |
|
|
inp->inp_ip_p = proto;
|
| 492 |
|
|
inp->inp_ip_ttl = ip_defttl;
|
| 493 |
|
|
return 0;
|
| 494 |
|
|
}
|
| 495 |
|
|
|
| 496 |
|
|
static int
|
| 497 |
|
|
rip_detach(struct socket *so)
|
| 498 |
|
|
{
|
| 499 |
|
|
struct inpcb *inp;
|
| 500 |
|
|
|
| 501 |
|
|
inp = sotoinpcb(so);
|
| 502 |
|
|
if (inp == 0)
|
| 503 |
|
|
panic("rip_detach");
|
| 504 |
|
|
if (so == ip_mrouter)
|
| 505 |
|
|
ip_mrouter_done();
|
| 506 |
|
|
ip_rsvp_force_done(so);
|
| 507 |
|
|
if (so == ip_rsvpd)
|
| 508 |
|
|
ip_rsvp_done();
|
| 509 |
|
|
in_pcbdetach(inp);
|
| 510 |
|
|
return 0;
|
| 511 |
|
|
}
|
| 512 |
|
|
|
| 513 |
|
|
static int
|
| 514 |
|
|
rip_abort(struct socket *so)
|
| 515 |
|
|
{
|
| 516 |
|
|
soisdisconnected(so);
|
| 517 |
|
|
return rip_detach(so);
|
| 518 |
|
|
}
|
| 519 |
|
|
|
| 520 |
|
|
static int
|
| 521 |
|
|
rip_disconnect(struct socket *so)
|
| 522 |
|
|
{
|
| 523 |
|
|
if ((so->so_state & SS_ISCONNECTED) == 0)
|
| 524 |
|
|
return ENOTCONN;
|
| 525 |
|
|
return rip_abort(so);
|
| 526 |
|
|
}
|
| 527 |
|
|
|
| 528 |
|
|
static int
|
| 529 |
|
|
rip_bind(struct socket *so, struct sockaddr *nam, struct proc *p)
|
| 530 |
|
|
{
|
| 531 |
|
|
struct inpcb *inp = sotoinpcb(so);
|
| 532 |
|
|
struct sockaddr_in *addr = (struct sockaddr_in *)nam;
|
| 533 |
|
|
|
| 534 |
|
|
if (nam->sa_len != sizeof(*addr))
|
| 535 |
|
|
return EINVAL;
|
| 536 |
|
|
|
| 537 |
|
|
if (TAILQ_EMPTY(&ifnet) || ((addr->sin_family != AF_INET) &&
|
| 538 |
|
|
(addr->sin_family != AF_IMPLINK)) ||
|
| 539 |
|
|
(addr->sin_addr.s_addr &&
|
| 540 |
|
|
ifa_ifwithaddr((struct sockaddr *)addr) == 0))
|
| 541 |
|
|
return EADDRNOTAVAIL;
|
| 542 |
|
|
inp->inp_laddr = addr->sin_addr;
|
| 543 |
|
|
return 0;
|
| 544 |
|
|
}
|
| 545 |
|
|
|
| 546 |
|
|
static int
|
| 547 |
|
|
rip_connect(struct socket *so, struct sockaddr *nam, struct proc *p)
|
| 548 |
|
|
{
|
| 549 |
|
|
struct inpcb *inp = sotoinpcb(so);
|
| 550 |
|
|
struct sockaddr_in *addr = (struct sockaddr_in *)nam;
|
| 551 |
|
|
|
| 552 |
|
|
if (nam->sa_len != sizeof(*addr))
|
| 553 |
|
|
return EINVAL;
|
| 554 |
|
|
if (TAILQ_EMPTY(&ifnet))
|
| 555 |
|
|
return EADDRNOTAVAIL;
|
| 556 |
|
|
if ((addr->sin_family != AF_INET) &&
|
| 557 |
|
|
(addr->sin_family != AF_IMPLINK))
|
| 558 |
|
|
return EAFNOSUPPORT;
|
| 559 |
|
|
inp->inp_faddr = addr->sin_addr;
|
| 560 |
|
|
soisconnected(so);
|
| 561 |
|
|
return 0;
|
| 562 |
|
|
}
|
| 563 |
|
|
|
| 564 |
|
|
static int
|
| 565 |
|
|
rip_shutdown(struct socket *so)
|
| 566 |
|
|
{
|
| 567 |
|
|
socantsendmore(so);
|
| 568 |
|
|
return 0;
|
| 569 |
|
|
}
|
| 570 |
|
|
|
| 571 |
|
|
static int
|
| 572 |
|
|
rip_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
|
| 573 |
|
|
struct mbuf *control, struct proc *p)
|
| 574 |
|
|
{
|
| 575 |
|
|
struct inpcb *inp = sotoinpcb(so);
|
| 576 |
|
|
register u_long dst;
|
| 577 |
|
|
|
| 578 |
|
|
if (so->so_state & SS_ISCONNECTED) {
|
| 579 |
|
|
if (nam) {
|
| 580 |
|
|
m_freem(m);
|
| 581 |
|
|
return EISCONN;
|
| 582 |
|
|
}
|
| 583 |
|
|
dst = inp->inp_faddr.s_addr;
|
| 584 |
|
|
} else {
|
| 585 |
|
|
if (nam == NULL) {
|
| 586 |
|
|
m_freem(m);
|
| 587 |
|
|
return ENOTCONN;
|
| 588 |
|
|
}
|
| 589 |
|
|
dst = ((struct sockaddr_in *)nam)->sin_addr.s_addr;
|
| 590 |
|
|
}
|
| 591 |
|
|
return rip_output(m, so, dst);
|
| 592 |
|
|
}
|
| 593 |
|
|
|
| 594 |
|
|
struct pr_usrreqs rip_usrreqs = {
|
| 595 |
|
|
rip_abort, pru_accept_notsupp, rip_attach, rip_bind, rip_connect,
|
| 596 |
|
|
pru_connect2_notsupp, in_control, rip_detach, rip_disconnect,
|
| 597 |
|
|
pru_listen_notsupp, in_setpeeraddr, pru_rcvd_notsupp,
|
| 598 |
|
|
pru_rcvoob_notsupp, rip_send, pru_sense_null, rip_shutdown,
|
| 599 |
|
|
in_setsockaddr, sosend, soreceive, sopoll
|
| 600 |
|
|
};
|
