version 1.1.1.1, 1993/03/21 09:45:37 |
version 1.108.2.1, 2009/01/19 13:20:13 |
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/* $NetBSD$ */ |
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/* |
/* |
* Copyright (c) 1982, 1986, 1988 Regents of the University of California. |
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. |
* All rights reserved. |
* All rights reserved. |
* |
* |
* Redistribution and use in source and binary forms, with or without |
* Redistribution and use in source and binary forms, with or without |
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* 2. Redistributions in binary form must reproduce the above copyright |
* 2. Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* documentation and/or other materials provided with the distribution. |
* 3. All advertising materials mentioning features or use of this software |
* 3. Neither the name of the project nor the names of its contributors |
* must display the following acknowledgement: |
* may be used to endorse or promote products derived from this software |
* This product includes software developed by the University of |
* without specific prior written permission. |
* California, Berkeley and its contributors. |
* |
* 4. Neither the name of the University nor the names of its contributors |
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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*/ |
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/* |
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* Copyright (c) 1982, 1986, 1988, 1993 |
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* The Regents of the University of California. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
|
* 3. Neither the name of the University nor the names of its contributors |
* may be used to endorse or promote products derived from this software |
* may be used to endorse or promote products derived from this software |
* without specific prior written permission. |
* without specific prior written permission. |
* |
* |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
* SUCH DAMAGE. |
* SUCH DAMAGE. |
* |
* |
* @(#)raw_ip.c 7.8 (Berkeley) 7/25/90 |
* @(#)raw_ip.c 8.7 (Berkeley) 5/15/95 |
*/ |
*/ |
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#include "param.h" |
#include <sys/cdefs.h> |
#include "malloc.h" |
__KERNEL_RCSID(0, "$NetBSD$"); |
#include "mbuf.h" |
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#include "socket.h" |
#include "opt_inet.h" |
#include "protosw.h" |
#include "opt_compat_netbsd.h" |
#include "socketvar.h" |
#include "opt_ipsec.h" |
#include "errno.h" |
#include "opt_mrouting.h" |
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#include "../net/if.h" |
#include <sys/param.h> |
#include "../net/route.h" |
#include <sys/sysctl.h> |
#include "../net/raw_cb.h" |
#include <sys/malloc.h> |
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#include <sys/mbuf.h> |
#include "in.h" |
#include <sys/socket.h> |
#include "in_systm.h" |
#include <sys/protosw.h> |
#include "ip.h" |
#include <sys/socketvar.h> |
#include "ip_var.h" |
#include <sys/errno.h> |
#include "in_pcb.h" |
#include <sys/systm.h> |
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#include <sys/proc.h> |
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#include <sys/kauth.h> |
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#include <net/if.h> |
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#include <net/route.h> |
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#include <netinet/in.h> |
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#include <netinet/in_systm.h> |
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#include <netinet/ip.h> |
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#include <netinet/ip_var.h> |
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#include <netinet/ip_private.h> |
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#include <netinet/ip_mroute.h> |
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#include <netinet/ip_icmp.h> |
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#include <netinet/in_pcb.h> |
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#include <netinet/in_proto.h> |
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#include <netinet/in_var.h> |
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#include <machine/stdarg.h> |
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#ifdef IPSEC |
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#include <netinet6/ipsec.h> |
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#include <netinet6/ipsec_private.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/ipsec_var.h> |
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#include <netipsec/ipsec_private.h> |
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#endif /* FAST_IPSEC */ |
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#ifdef COMPAT_50 |
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#include <compat/sys/socket.h> |
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#endif |
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struct inpcbtable rawcbtable; |
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int rip_pcbnotify(struct inpcbtable *, struct in_addr, |
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struct in_addr, int, int, void (*)(struct inpcb *, int)); |
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int rip_bind(struct inpcb *, struct mbuf *); |
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int rip_connect(struct inpcb *, struct mbuf *); |
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void rip_disconnect(struct inpcb *); |
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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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/* |
/* |
* Raw interface to IP protocol. |
* Raw interface to IP protocol. |
*/ |
*/ |
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struct sockaddr_in ripdst = { sizeof(ripdst), AF_INET }; |
/* |
struct sockaddr_in ripsrc = { sizeof(ripsrc), AF_INET }; |
* Initialize raw connection block q. |
struct sockproto ripproto = { PF_INET }; |
*/ |
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void |
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rip_init(void) |
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{ |
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in_pcbinit(&rawcbtable, 1, 1); |
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} |
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static void |
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rip_sbappendaddr(struct inpcb *last, struct ip *ip, const struct sockaddr *sa, |
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int hlen, struct mbuf *opts, struct mbuf *n) |
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{ |
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if (last->inp_flags & INP_NOHEADER) |
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m_adj(n, hlen); |
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if (last->inp_flags & INP_CONTROLOPTS |
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#ifdef SO_OTIMESTAMP |
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|| last->inp_socket->so_options & SO_OTIMESTAMP |
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#endif |
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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, sa, 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->inp_socket); |
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} |
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/* |
/* |
* Setup generic address and protocol structures |
* Setup generic address and protocol structures |
* for raw_input routine, then pass them along with |
* for raw_input routine, then pass them along with |
* mbuf chain. |
* mbuf chain. |
*/ |
*/ |
rip_input(m) |
void |
struct mbuf *m; |
rip_input(struct mbuf *m, ...) |
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{ |
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int hlen, proto; |
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struct ip *ip = mtod(m, struct ip *); |
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struct inpcb_hdr *inph; |
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struct inpcb *inp; |
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struct inpcb *last = NULL; |
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struct mbuf *n, *opts = NULL; |
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struct sockaddr_in ripsrc; |
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va_list ap; |
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va_start(ap, m); |
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(void)va_arg(ap, int); /* ignore value, advance ap */ |
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proto = va_arg(ap, int); |
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va_end(ap); |
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sockaddr_in_init(&ripsrc, &ip->ip_src, 0); |
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/* |
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* XXX Compatibility: programs using raw IP expect ip_len |
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* XXX to have the header length subtracted, and in host order. |
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* XXX ip_off is also expected to be host order. |
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*/ |
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hlen = ip->ip_hl << 2; |
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ip->ip_len = ntohs(ip->ip_len) - hlen; |
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NTOHS(ip->ip_off); |
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CIRCLEQ_FOREACH(inph, &rawcbtable.inpt_queue, inph_queue) { |
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inp = (struct inpcb *)inph; |
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if (inp->inp_af != AF_INET) |
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continue; |
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if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto) |
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continue; |
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if (!in_nullhost(inp->inp_laddr) && |
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!in_hosteq(inp->inp_laddr, ip->ip_dst)) |
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continue; |
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if (!in_nullhost(inp->inp_faddr) && |
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!in_hosteq(inp->inp_faddr, ip->ip_src)) |
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continue; |
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if (last == NULL) |
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; |
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#if defined(IPSEC) || defined(FAST_IPSEC) |
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/* check AH/ESP integrity. */ |
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else if (ipsec4_in_reject_so(m, last->inp_socket)) { |
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IPSEC_STATINC(IPSEC_STAT_IN_POLVIO); |
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/* do not inject data to pcb */ |
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} |
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#endif /*IPSEC*/ |
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else if ((n = m_copypacket(m, M_DONTWAIT)) != NULL) { |
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rip_sbappendaddr(last, ip, sintosa(&ripsrc), hlen, opts, |
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n); |
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opts = NULL; |
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} |
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last = inp; |
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} |
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#if defined(IPSEC) || defined(FAST_IPSEC) |
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/* check AH/ESP integrity. */ |
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if (last != NULL && ipsec4_in_reject_so(m, last->inp_socket)) { |
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m_freem(m); |
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IPSEC_STATINC(IPSEC_STAT_IN_POLVIO); |
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IP_STATDEC(IP_STAT_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 != NULL) |
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rip_sbappendaddr(last, ip, sintosa(&ripsrc), hlen, opts, m); |
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else if (inetsw[ip_protox[ip->ip_p]].pr_input == rip_input) { |
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uint64_t *ips; |
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icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PROTOCOL, |
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0, 0); |
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ips = IP_STAT_GETREF(); |
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ips[IP_STAT_NOPROTO]++; |
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ips[IP_STAT_DELIVERED]--; |
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IP_STAT_PUTREF(); |
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} else |
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m_freem(m); |
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return; |
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} |
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int |
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rip_pcbnotify(struct inpcbtable *table, |
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struct in_addr faddr, struct in_addr laddr, int proto, int errno, |
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void (*notify)(struct inpcb *, int)) |
{ |
{ |
register struct ip *ip = mtod(m, struct ip *); |
struct inpcb *inp, *ninp; |
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int nmatch; |
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ripproto.sp_protocol = ip->ip_p; |
nmatch = 0; |
ripdst.sin_addr = ip->ip_dst; |
for (inp = (struct inpcb *)CIRCLEQ_FIRST(&table->inpt_queue); |
ripsrc.sin_addr = ip->ip_src; |
inp != (struct inpcb *)&table->inpt_queue; |
if (raw_input(m, &ripproto, (struct sockaddr *)&ripsrc, |
inp = ninp) { |
(struct sockaddr *)&ripdst) == 0) { |
ninp = (struct inpcb *)inp->inp_queue.cqe_next; |
ipstat.ips_noproto++; |
if (inp->inp_af != AF_INET) |
ipstat.ips_delivered--; |
continue; |
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if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto) |
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continue; |
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if (in_hosteq(inp->inp_faddr, faddr) && |
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in_hosteq(inp->inp_laddr, laddr)) { |
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(*notify)(inp, errno); |
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nmatch++; |
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} |
} |
} |
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return nmatch; |
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} |
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void * |
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rip_ctlinput(int cmd, const struct sockaddr *sa, void *v) |
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{ |
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struct ip *ip = v; |
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void (*notify)(struct inpcb *, int) = in_rtchange; |
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int errno; |
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if (sa->sa_family != AF_INET || |
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sa->sa_len != sizeof(struct sockaddr_in)) |
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return NULL; |
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if ((unsigned)cmd >= PRC_NCMDS) |
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return NULL; |
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errno = inetctlerrmap[cmd]; |
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if (PRC_IS_REDIRECT(cmd)) |
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notify = in_rtchange, ip = 0; |
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else if (cmd == PRC_HOSTDEAD) |
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ip = 0; |
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else if (errno == 0) |
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return NULL; |
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if (ip) { |
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rip_pcbnotify(&rawcbtable, satocsin(sa)->sin_addr, |
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ip->ip_src, ip->ip_p, errno, notify); |
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/* XXX mapped address case */ |
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} else |
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in_pcbnotifyall(&rawcbtable, satocsin(sa)->sin_addr, errno, |
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notify); |
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return NULL; |
} |
} |
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/* |
/* |
* Generate IP header and pass packet to ip_output. |
* Generate IP header and pass packet to ip_output. |
* Tack on options user may have setup with control call. |
* Tack on options user may have setup with control call. |
*/ |
*/ |
#define satosin(sa) ((struct sockaddr_in *)(sa)) |
int |
rip_output(m, so) |
rip_output(struct mbuf *m, ...) |
register struct mbuf *m; |
{ |
struct socket *so; |
struct inpcb *inp; |
{ |
struct ip *ip; |
register struct ip *ip; |
struct mbuf *opts; |
register struct raw_inpcb *rp = sotorawinpcb(so); |
int flags; |
register struct sockaddr_in *sin; |
va_list ap; |
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va_start(ap, m); |
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inp = va_arg(ap, struct inpcb *); |
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va_end(ap); |
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flags = |
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(inp->inp_socket->so_options & SO_DONTROUTE) | IP_ALLOWBROADCAST |
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| IP_RETURNMTU; |
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/* |
/* |
* If the user handed us a complete IP packet, use it. |
* If the user handed us a complete IP packet, use it. |
* Otherwise, allocate an mbuf for a header and fill it in. |
* Otherwise, allocate an mbuf for a header and fill it in. |
*/ |
*/ |
if (rp->rinp_flags & RINPF_HDRINCL) |
if ((inp->inp_flags & INP_HDRINCL) == 0) { |
ip = mtod(m, struct ip *); |
if ((m->m_pkthdr.len + sizeof(struct ip)) > IP_MAXPACKET) { |
else { |
m_freem(m); |
M_PREPEND(m, sizeof(struct ip), M_WAIT); |
return (EMSGSIZE); |
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} |
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M_PREPEND(m, sizeof(struct ip), M_DONTWAIT); |
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if (!m) |
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return (ENOBUFS); |
ip = mtod(m, struct ip *); |
ip = mtod(m, struct ip *); |
ip->ip_tos = 0; |
ip->ip_tos = 0; |
ip->ip_off = 0; |
ip->ip_off = htons(0); |
ip->ip_p = rp->rinp_rcb.rcb_proto.sp_protocol; |
ip->ip_p = inp->inp_ip.ip_p; |
ip->ip_len = m->m_pkthdr.len; |
ip->ip_len = htons(m->m_pkthdr.len); |
if (sin = satosin(rp->rinp_rcb.rcb_laddr)) { |
ip->ip_src = inp->inp_laddr; |
ip->ip_src = sin->sin_addr; |
ip->ip_dst = inp->inp_faddr; |
} else |
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ip->ip_src.s_addr = 0; |
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if (sin = satosin(rp->rinp_rcb.rcb_faddr)) |
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ip->ip_dst = sin->sin_addr; |
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ip->ip_ttl = MAXTTL; |
ip->ip_ttl = MAXTTL; |
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opts = inp->inp_options; |
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} else { |
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if (m->m_pkthdr.len > IP_MAXPACKET) { |
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m_freem(m); |
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return (EMSGSIZE); |
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} |
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ip = mtod(m, struct ip *); |
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/* |
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* If the mbuf is read-only, we need to allocate |
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* a new mbuf for the header, since we need to |
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* modify the header. |
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*/ |
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if (M_READONLY(m)) { |
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int hlen = ip->ip_hl << 2; |
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m = m_copyup(m, hlen, (max_linkhdr + 3) & ~3); |
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if (m == NULL) |
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return (ENOMEM); /* XXX */ |
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ip = mtod(m, struct ip *); |
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} |
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/* XXX userland passes ip_len and ip_off in host order */ |
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if (m->m_pkthdr.len != ip->ip_len) { |
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m_freem(m); |
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return (EINVAL); |
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} |
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HTONS(ip->ip_len); |
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HTONS(ip->ip_off); |
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if (ip->ip_id != 0 || m->m_pkthdr.len < IP_MINFRAGSIZE) |
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flags |= IP_NOIPNEWID; |
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opts = NULL; |
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/* XXX prevent ip_output from overwriting header fields */ |
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flags |= IP_RAWOUTPUT; |
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IP_STATINC(IP_STAT_RAWOUT); |
} |
} |
return (ip_output(m, |
return (ip_output(m, opts, &inp->inp_route, flags, inp->inp_moptions, |
(rp->rinp_flags & RINPF_HDRINCL)? (struct mbuf *)0: rp->rinp_options, |
inp->inp_socket, &inp->inp_errormtu)); |
&rp->rinp_route, |
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(so->so_options & SO_DONTROUTE) | IP_ALLOWBROADCAST)); |
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} |
} |
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/* |
/* |
* Raw IP socket option processing. |
* Raw IP socket option processing. |
*/ |
*/ |
rip_ctloutput(op, so, level, optname, m) |
int |
int op; |
rip_ctloutput(int op, struct socket *so, struct sockopt *sopt) |
struct socket *so; |
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int level, optname; |
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struct mbuf **m; |
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{ |
{ |
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struct inpcb *inp = sotoinpcb(so); |
int error = 0; |
int error = 0; |
register struct raw_inpcb *rp = sotorawinpcb(so); |
int optval; |
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if (level != IPPROTO_IP) |
if (sopt->sopt_level == SOL_SOCKET && sopt->sopt_name == SO_NOHEADER) { |
error = EINVAL; |
if (op == PRCO_GETOPT) { |
else switch (op) { |
optval = (inp->inp_flags & INP_NOHEADER) ? 1 : 0; |
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error = sockopt_set(sopt, &optval, sizeof(optval)); |
case PRCO_SETOPT: |
} else if (op == PRCO_SETOPT) { |
switch (optname) { |
error = sockopt_getint(sopt, &optval); |
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if (error) |
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goto out; |
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if (optval) { |
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inp->inp_flags &= ~INP_HDRINCL; |
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inp->inp_flags |= INP_NOHEADER; |
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} else |
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inp->inp_flags &= ~INP_NOHEADER; |
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} |
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goto out; |
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} else if (sopt->sopt_level != IPPROTO_IP) |
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return ip_ctloutput(op, so, sopt); |
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case IP_OPTIONS: |
switch (op) { |
return (ip_pcbopts(&rp->rinp_options, *m)); |
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case PRCO_SETOPT: |
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switch (sopt->sopt_name) { |
case IP_HDRINCL: |
case IP_HDRINCL: |
if (m == 0 || *m == 0 || (*m)->m_len < sizeof (int)) { |
error = sockopt_getint(sopt, &optval); |
error = EINVAL; |
if (error) |
break; |
break; |
} |
if (optval) |
if (*mtod(*m, int *)) |
inp->inp_flags |= INP_HDRINCL; |
rp->rinp_flags |= RINPF_HDRINCL; |
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else |
else |
rp->rinp_flags &= ~RINPF_HDRINCL; |
inp->inp_flags &= ~INP_HDRINCL; |
break; |
break; |
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#ifdef MROUTING |
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case MRT_INIT: |
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case MRT_DONE: |
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case MRT_ADD_VIF: |
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case MRT_DEL_VIF: |
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case MRT_ADD_MFC: |
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case MRT_DEL_MFC: |
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case MRT_ASSERT: |
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case MRT_API_CONFIG: |
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case MRT_ADD_BW_UPCALL: |
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case MRT_DEL_BW_UPCALL: |
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error = ip_mrouter_set(so, sopt); |
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break; |
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#endif |
|
|
default: |
default: |
error = EINVAL; |
error = ip_ctloutput(op, so, sopt); |
break; |
break; |
} |
} |
break; |
break; |
|
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case PRCO_GETOPT: |
case PRCO_GETOPT: |
*m = m_get(M_WAIT, MT_SOOPTS); |
switch (sopt->sopt_name) { |
switch (optname) { |
case IP_HDRINCL: |
|
optval = inp->inp_flags & INP_HDRINCL; |
case IP_OPTIONS: |
error = sockopt_set(sopt, &optval, sizeof(optval)); |
if (rp->rinp_options) { |
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(*m)->m_len = rp->rinp_options->m_len; |
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bcopy(mtod(rp->rinp_options, caddr_t), |
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mtod(*m, caddr_t), (unsigned)(*m)->m_len); |
|
} else |
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(*m)->m_len = 0; |
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break; |
break; |
|
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case IP_HDRINCL: |
#ifdef MROUTING |
(*m)->m_len = sizeof (int); |
case MRT_VERSION: |
*mtod(*m, int *) = rp->rinp_flags & RINPF_HDRINCL; |
case MRT_ASSERT: |
|
case MRT_API_SUPPORT: |
|
case MRT_API_CONFIG: |
|
error = ip_mrouter_get(so, sopt); |
break; |
break; |
|
#endif |
|
|
default: |
default: |
error = EINVAL; |
error = ip_ctloutput(op, so, sopt); |
m_freem(*m); |
|
*m = 0; |
|
break; |
break; |
} |
} |
break; |
break; |
} |
} |
if (op == PRCO_SETOPT && *m) |
out: |
(void)m_free(*m); |
return error; |
return (error); |
} |
|
|
|
int |
|
rip_bind(struct inpcb *inp, struct mbuf *nam) |
|
{ |
|
struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *); |
|
|
|
if (nam->m_len != sizeof(*addr)) |
|
return (EINVAL); |
|
if (TAILQ_FIRST(&ifnet) == 0) |
|
return (EADDRNOTAVAIL); |
|
if (addr->sin_family != AF_INET && |
|
addr->sin_family != AF_IMPLINK) |
|
return (EAFNOSUPPORT); |
|
if (!in_nullhost(addr->sin_addr) && |
|
ifa_ifwithaddr(sintosa(addr)) == 0) |
|
return (EADDRNOTAVAIL); |
|
inp->inp_laddr = addr->sin_addr; |
|
return (0); |
|
} |
|
|
|
int |
|
rip_connect(struct inpcb *inp, struct mbuf *nam) |
|
{ |
|
struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *); |
|
|
|
if (nam->m_len != sizeof(*addr)) |
|
return (EINVAL); |
|
if (TAILQ_FIRST(&ifnet) == 0) |
|
return (EADDRNOTAVAIL); |
|
if (addr->sin_family != AF_INET && |
|
addr->sin_family != AF_IMPLINK) |
|
return (EAFNOSUPPORT); |
|
inp->inp_faddr = addr->sin_addr; |
|
return (0); |
} |
} |
|
|
|
void |
|
rip_disconnect(struct inpcb *inp) |
|
{ |
|
|
|
inp->inp_faddr = zeroin_addr; |
|
} |
|
|
|
u_long rip_sendspace = RIPSNDQ; |
|
u_long rip_recvspace = RIPRCVQ; |
|
|
/*ARGSUSED*/ |
/*ARGSUSED*/ |
rip_usrreq(so, req, m, nam, rights, control) |
int |
register struct socket *so; |
rip_usrreq(struct socket *so, int req, |
int req; |
struct mbuf *m, struct mbuf *nam, struct mbuf *control, struct lwp *l) |
struct mbuf *m, *nam, *rights, *control; |
|
{ |
{ |
register int error = 0; |
struct inpcb *inp; |
register struct raw_inpcb *rp = sotorawinpcb(so); |
int s; |
|
int error = 0; |
|
#ifdef MROUTING |
|
extern struct socket *ip_mrouter; |
|
#endif |
|
|
|
if (req == PRU_CONTROL) |
|
return (in_control(so, (long)m, (void *)nam, |
|
(struct ifnet *)control, l)); |
|
|
|
s = splsoftnet(); |
|
|
|
if (req == PRU_PURGEIF) { |
|
mutex_enter(softnet_lock); |
|
in_pcbpurgeif0(&rawcbtable, (struct ifnet *)control); |
|
in_purgeif((struct ifnet *)control); |
|
in_pcbpurgeif(&rawcbtable, (struct ifnet *)control); |
|
mutex_exit(softnet_lock); |
|
splx(s); |
|
return (0); |
|
} |
|
|
|
inp = sotoinpcb(so); |
|
#ifdef DIAGNOSTIC |
|
if (req != PRU_SEND && req != PRU_SENDOOB && control) |
|
panic("rip_usrreq: unexpected control mbuf"); |
|
#endif |
|
if (inp == 0 && req != PRU_ATTACH) { |
|
error = EINVAL; |
|
goto release; |
|
} |
|
|
switch (req) { |
switch (req) { |
|
|
case PRU_ATTACH: |
case PRU_ATTACH: |
if (rp) |
sosetlock(so); |
panic("rip_attach"); |
if (inp != 0) { |
MALLOC(rp, struct raw_inpcb *, sizeof *rp, M_PCB, M_WAITOK); |
error = EISCONN; |
if (rp == 0) |
break; |
return (ENOBUFS); |
} |
bzero((caddr_t)rp, sizeof *rp); |
|
so->so_pcb = (caddr_t)rp; |
if (l == NULL) { |
|
error = EACCES; |
|
break; |
|
} |
|
|
|
/* XXX: raw socket permissions are checked in socreate() */ |
|
|
|
if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { |
|
error = soreserve(so, rip_sendspace, rip_recvspace); |
|
if (error) |
|
break; |
|
} |
|
error = in_pcballoc(so, &rawcbtable); |
|
if (error) |
|
break; |
|
inp = sotoinpcb(so); |
|
inp->inp_ip.ip_p = (long)nam; |
break; |
break; |
|
|
case PRU_DETACH: |
case PRU_DETACH: |
if (rp == 0) |
#ifdef MROUTING |
panic("rip_detach"); |
if (so == ip_mrouter) |
if (rp->rinp_options) |
ip_mrouter_done(); |
m_freem(rp->rinp_options); |
#endif |
if (rp->rinp_route.ro_rt) |
in_pcbdetach(inp); |
RTFREE(rp->rinp_route.ro_rt); |
|
if (rp->rinp_rcb.rcb_laddr) |
|
rp->rinp_rcb.rcb_laddr = 0; |
|
break; |
break; |
|
|
case PRU_BIND: |
case PRU_BIND: |
{ |
error = rip_bind(inp, nam); |
struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *); |
break; |
|
|
if (nam->m_len != sizeof(*addr)) |
case PRU_LISTEN: |
return (EINVAL); |
error = EOPNOTSUPP; |
if ((ifnet == 0) || |
break; |
((addr->sin_family != AF_INET) && |
|
(addr->sin_family != AF_IMPLINK)) || |
|
(addr->sin_addr.s_addr && |
|
ifa_ifwithaddr((struct sockaddr *)addr) == 0)) |
|
return (EADDRNOTAVAIL); |
|
rp->rinp_rcb.rcb_laddr = (struct sockaddr *)&rp->rinp_laddr; |
|
rp->rinp_laddr = *addr; |
|
return (0); |
|
} |
|
case PRU_CONNECT: |
|
{ |
|
struct sockaddr_in *addr = mtod(nam, struct sockaddr_in *); |
|
|
|
if (nam->m_len != sizeof(*addr)) |
case PRU_CONNECT: |
return (EINVAL); |
error = rip_connect(inp, nam); |
if (ifnet == 0) |
if (error) |
return (EADDRNOTAVAIL); |
break; |
if ((addr->sin_family != AF_INET) && |
|
(addr->sin_family != AF_IMPLINK)) |
|
return (EAFNOSUPPORT); |
|
rp->rinp_rcb.rcb_faddr = (struct sockaddr *)&rp->rinp_faddr; |
|
rp->rinp_faddr = *addr; |
|
soisconnected(so); |
soisconnected(so); |
|
break; |
|
|
|
case PRU_CONNECT2: |
|
error = EOPNOTSUPP; |
|
break; |
|
|
|
case PRU_DISCONNECT: |
|
soisdisconnected(so); |
|
rip_disconnect(inp); |
|
break; |
|
|
|
/* |
|
* Mark the connection as being incapable of further input. |
|
*/ |
|
case PRU_SHUTDOWN: |
|
socantsendmore(so); |
|
break; |
|
|
|
case PRU_RCVD: |
|
error = EOPNOTSUPP; |
|
break; |
|
|
|
/* |
|
* Ship a packet out. The appropriate raw output |
|
* routine handles any massaging necessary. |
|
*/ |
|
case PRU_SEND: |
|
if (control && control->m_len) { |
|
m_freem(control); |
|
m_freem(m); |
|
error = EINVAL; |
|
break; |
|
} |
|
{ |
|
if (nam) { |
|
if ((so->so_state & SS_ISCONNECTED) != 0) { |
|
error = EISCONN; |
|
goto die; |
|
} |
|
error = rip_connect(inp, nam); |
|
if (error) { |
|
die: |
|
m_freem(m); |
|
break; |
|
} |
|
} else { |
|
if ((so->so_state & SS_ISCONNECTED) == 0) { |
|
error = ENOTCONN; |
|
goto die; |
|
} |
|
} |
|
error = rip_output(m, inp); |
|
if (nam) |
|
rip_disconnect(inp); |
|
} |
|
break; |
|
|
|
case PRU_SENSE: |
|
/* |
|
* stat: don't bother with a blocksize. |
|
*/ |
|
splx(s); |
return (0); |
return (0); |
} |
|
|
case PRU_RCVOOB: |
|
error = EOPNOTSUPP; |
|
break; |
|
|
|
case PRU_SENDOOB: |
|
m_freem(control); |
|
m_freem(m); |
|
error = EOPNOTSUPP; |
|
break; |
|
|
|
case PRU_SOCKADDR: |
|
in_setsockaddr(inp, nam); |
|
break; |
|
|
|
case PRU_PEERADDR: |
|
in_setpeeraddr(inp, nam); |
|
break; |
|
|
|
default: |
|
panic("rip_usrreq"); |
} |
} |
error = raw_usrreq(so, req, m, nam, control); |
|
|
|
if (error && (req == PRU_ATTACH) && so->so_pcb) |
release: |
free(so->so_pcb, M_PCB); |
splx(s); |
return (error); |
return (error); |
} |
} |
|
|
|
SYSCTL_SETUP(sysctl_net_inet_raw_setup, "sysctl net.inet.raw subtree setup") |
|
{ |
|
|
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT, |
|
CTLTYPE_NODE, "net", NULL, |
|
NULL, 0, NULL, 0, |
|
CTL_NET, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT, |
|
CTLTYPE_NODE, "inet", NULL, |
|
NULL, 0, NULL, 0, |
|
CTL_NET, PF_INET, CTL_EOL); |
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT, |
|
CTLTYPE_NODE, "raw", |
|
SYSCTL_DESCR("Raw IPv4 settings"), |
|
NULL, 0, NULL, 0, |
|
CTL_NET, PF_INET, IPPROTO_RAW, CTL_EOL); |
|
|
|
sysctl_createv(clog, 0, NULL, NULL, |
|
CTLFLAG_PERMANENT, |
|
CTLTYPE_STRUCT, "pcblist", |
|
SYSCTL_DESCR("Raw IPv4 control block list"), |
|
sysctl_inpcblist, 0, &rawcbtable, 0, |
|
CTL_NET, PF_INET, IPPROTO_RAW, |
|
CTL_CREATE, CTL_EOL); |
|
} |