version 1.53, 2000/03/30 13:25:04 |
version 1.78, 2003/11/19 18:39:34 |
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/* |
/* |
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. |
* 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 |
* modification, are permitted provided that the following conditions |
* modification, are permitted provided that the following conditions |
* are met: |
* are met: |
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* 3. Neither the name of the project nor the names of its contributors |
* 3. Neither the name of the project 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. |
* |
* |
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND |
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND |
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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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 University nor the names of its contributors |
* 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 |
* 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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* @(#)raw_ip.c 8.7 (Berkeley) 5/15/95 |
* @(#)raw_ip.c 8.7 (Berkeley) 5/15/95 |
*/ |
*/ |
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#include <sys/cdefs.h> |
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__KERNEL_RCSID(0, "$NetBSD$"); |
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#include "opt_inet.h" |
#include "opt_ipsec.h" |
#include "opt_ipsec.h" |
#include "opt_mrouting.h" |
#include "opt_mrouting.h" |
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#include <netinet6/ipsec.h> |
#include <netinet6/ipsec.h> |
#endif /*IPSEC*/ |
#endif /*IPSEC*/ |
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#ifdef FAST_IPSEC |
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#include <netipsec/ipsec.h> |
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#endif /* FAST_IPSEC*/ |
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struct inpcbtable rawcbtable; |
struct inpcbtable rawcbtable; |
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int rip_pcbnotify __P((struct inpcbtable *, struct in_addr, |
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struct in_addr, int, int, void (*) __P((struct inpcb *, int)))); |
int rip_bind __P((struct inpcb *, struct mbuf *)); |
int rip_bind __P((struct inpcb *, struct mbuf *)); |
int rip_connect __P((struct inpcb *, struct mbuf *)); |
int rip_connect __P((struct inpcb *, struct mbuf *)); |
void rip_disconnect __P((struct inpcb *)); |
void rip_disconnect __P((struct inpcb *)); |
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in_pcbinit(&rawcbtable, 1, 1); |
in_pcbinit(&rawcbtable, 1, 1); |
} |
} |
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static struct sockaddr_in ripsrc = { sizeof(ripsrc), AF_INET }; |
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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 |
Line 137 rip_input(m, va_alist) |
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Line 141 rip_input(m, va_alist) |
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va_dcl |
va_dcl |
#endif |
#endif |
{ |
{ |
int off, proto; |
int proto; |
struct ip *ip = mtod(m, struct ip *); |
struct ip *ip = mtod(m, struct ip *); |
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struct inpcb_hdr *inph; |
struct inpcb *inp; |
struct inpcb *inp; |
struct inpcb *last = 0; |
struct inpcb *last = 0; |
struct mbuf *opts = 0; |
struct mbuf *opts = 0; |
Line 146 rip_input(m, va_alist) |
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Line 151 rip_input(m, va_alist) |
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va_list ap; |
va_list ap; |
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va_start(ap, m); |
va_start(ap, m); |
off = va_arg(ap, int); |
(void)va_arg(ap, int); /* ignore value, advance ap */ |
proto = va_arg(ap, int); |
proto = va_arg(ap, int); |
va_end(ap); |
va_end(ap); |
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Line 158 rip_input(m, va_alist) |
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Line 163 rip_input(m, va_alist) |
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/* |
/* |
* XXX Compatibility: programs using raw IP expect ip_len |
* XXX Compatibility: programs using raw IP expect ip_len |
* XXX to have the header length subtracted. |
* 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. |
*/ |
*/ |
ip->ip_len -= ip->ip_hl << 2; |
ip->ip_len = ntohs(ip->ip_len) - (ip->ip_hl << 2); |
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NTOHS(ip->ip_off); |
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for (inp = rawcbtable.inpt_queue.cqh_first; |
CIRCLEQ_FOREACH(inph, &rawcbtable.inpt_queue, inph_queue) { |
inp != (struct inpcb *)&rawcbtable.inpt_queue; |
inp = (struct inpcb *)inph; |
inp = inp->inp_queue.cqe_next) { |
if (inp->inp_af != AF_INET) |
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continue; |
if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto) |
if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto) |
continue; |
continue; |
if (!in_nullhost(inp->inp_laddr) && |
if (!in_nullhost(inp->inp_laddr) && |
Line 175 rip_input(m, va_alist) |
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Line 183 rip_input(m, va_alist) |
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continue; |
continue; |
if (last) { |
if (last) { |
struct mbuf *n; |
struct mbuf *n; |
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#if defined(IPSEC) || defined(FAST_IPSEC) |
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/* check AH/ESP integrity. */ |
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if (ipsec4_in_reject_so(m, last->inp_socket)) { |
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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*/ |
if ((n = m_copy(m, 0, (int)M_COPYALL)) != NULL) { |
if ((n = m_copy(m, 0, (int)M_COPYALL)) != NULL) { |
if (last->inp_flags & INP_CONTROLOPTS || |
if (last->inp_flags & INP_CONTROLOPTS || |
last->inp_socket->so_options & SO_TIMESTAMP) |
last->inp_socket->so_options & SO_TIMESTAMP) |
Line 192 rip_input(m, va_alist) |
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Line 208 rip_input(m, va_alist) |
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} |
} |
last = inp; |
last = inp; |
} |
} |
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#if defined(IPSEC) || defined(FAST_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*/ |
if (last) { |
if (last) { |
if (last->inp_flags & INP_CONTROLOPTS || |
if (last->inp_flags & INP_CONTROLOPTS || |
last->inp_socket->so_options & SO_TIMESTAMP) |
last->inp_socket->so_options & SO_TIMESTAMP) |
Line 215 rip_input(m, va_alist) |
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Line 240 rip_input(m, va_alist) |
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return; |
return; |
} |
} |
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int |
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rip_pcbnotify(table, faddr, laddr, proto, errno, notify) |
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struct inpcbtable *table; |
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struct in_addr faddr, laddr; |
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int proto; |
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int errno; |
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void (*notify) __P((struct inpcb *, int)); |
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{ |
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struct inpcb *inp, *ninp; |
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int nmatch; |
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nmatch = 0; |
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for (inp = (struct inpcb *)CIRCLEQ_FIRST(&table->inpt_queue); |
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inp != (struct inpcb *)&table->inpt_queue; |
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inp = ninp) { |
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ninp = (struct inpcb *)inp->inp_queue.cqe_next; |
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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_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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} |
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return nmatch; |
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} |
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void * |
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rip_ctlinput(cmd, sa, v) |
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int cmd; |
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struct sockaddr *sa; |
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void *v; |
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{ |
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struct ip *ip = v; |
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void (*notify) __P((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, satosin(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, satosin(sa)->sin_addr, errno, |
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notify); |
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return NULL; |
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} |
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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. |
Line 251 rip_output(m, va_alist) |
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Line 339 rip_output(m, va_alist) |
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m_freem(m); |
m_freem(m); |
return (EMSGSIZE); |
return (EMSGSIZE); |
} |
} |
M_PREPEND(m, sizeof(struct ip), M_WAIT); |
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 = inp->inp_ip.ip_p; |
ip->ip_p = inp->inp_ip.ip_p; |
ip->ip_len = m->m_pkthdr.len; |
ip->ip_len = htons(m->m_pkthdr.len); |
ip->ip_src = inp->inp_laddr; |
ip->ip_src = inp->inp_laddr; |
ip->ip_dst = inp->inp_faddr; |
ip->ip_dst = inp->inp_faddr; |
ip->ip_ttl = MAXTTL; |
ip->ip_ttl = MAXTTL; |
Line 267 rip_output(m, va_alist) |
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Line 357 rip_output(m, va_alist) |
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return (EMSGSIZE); |
return (EMSGSIZE); |
} |
} |
ip = mtod(m, struct ip *); |
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 */ |
if (m->m_pkthdr.len != ip->ip_len) { |
if (m->m_pkthdr.len != ip->ip_len) { |
m_freem(m); |
m_freem(m); |
return (EINVAL); |
return (EINVAL); |
} |
} |
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HTONS(ip->ip_len); |
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HTONS(ip->ip_off); |
if (ip->ip_id == 0) |
if (ip->ip_id == 0) |
ip->ip_id = htons(ip_id++); |
ip->ip_id = ip_newid(); |
opts = NULL; |
opts = NULL; |
/* XXX prevent ip_output from overwriting header fields */ |
/* XXX prevent ip_output from overwriting header fields */ |
flags |= IP_RAWOUTPUT; |
flags |= IP_RAWOUTPUT; |
ipstat.ips_rawout++; |
ipstat.ips_rawout++; |
} |
} |
#ifdef IPSEC |
return (ip_output(m, opts, &inp->inp_route, flags, inp->inp_moptions, |
ipsec_setsocket(m, inp->inp_socket); |
inp->inp_socket, &inp->inp_errormtu)); |
#endif /*IPSEC*/ |
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return (ip_output(m, opts, &inp->inp_route, flags, inp->inp_moptions, &inp->inp_errormtu)); |
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} |
} |
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/* |
/* |
Line 339 rip_ctloutput(op, so, level, optname, m) |
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Line 445 rip_ctloutput(op, so, level, optname, m) |
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case PRCO_GETOPT: |
case PRCO_GETOPT: |
switch (optname) { |
switch (optname) { |
case IP_HDRINCL: |
case IP_HDRINCL: |
*m = m_get(M_WAIT, M_SOOPTS); |
*m = m_get(M_WAIT, MT_SOOPTS); |
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MCLAIM((*m), so->so_mowner); |
(*m)->m_len = sizeof (int); |
(*m)->m_len = sizeof (int); |
*mtod(*m, int *) = inp->inp_flags & INP_HDRINCL ? 1 : 0; |
*mtod(*m, int *) = inp->inp_flags & INP_HDRINCL ? 1 : 0; |
break; |
break; |
Line 369 rip_bind(inp, nam) |
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Line 476 rip_bind(inp, nam) |
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if (nam->m_len != sizeof(*addr)) |
if (nam->m_len != sizeof(*addr)) |
return (EINVAL); |
return (EINVAL); |
if (ifnet.tqh_first == 0) |
if (TAILQ_FIRST(&ifnet) == 0) |
return (EADDRNOTAVAIL); |
return (EADDRNOTAVAIL); |
if (addr->sin_family != AF_INET && |
if (addr->sin_family != AF_INET && |
addr->sin_family != AF_IMPLINK) |
addr->sin_family != AF_IMPLINK) |
Line 390 rip_connect(inp, nam) |
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Line 497 rip_connect(inp, nam) |
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if (nam->m_len != sizeof(*addr)) |
if (nam->m_len != sizeof(*addr)) |
return (EINVAL); |
return (EINVAL); |
if (ifnet.tqh_first == 0) |
if (TAILQ_FIRST(&ifnet) == 0) |
return (EADDRNOTAVAIL); |
return (EADDRNOTAVAIL); |
if (addr->sin_family != AF_INET && |
if (addr->sin_family != AF_INET && |
addr->sin_family != AF_IMPLINK) |
addr->sin_family != AF_IMPLINK) |
Line 430 rip_usrreq(so, req, m, nam, control, p) |
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Line 537 rip_usrreq(so, req, m, nam, control, p) |
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(struct ifnet *)control, p)); |
(struct ifnet *)control, p)); |
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if (req == PRU_PURGEIF) { |
if (req == PRU_PURGEIF) { |
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in_pcbpurgeif0(&rawcbtable, (struct ifnet *)control); |
in_purgeif((struct ifnet *)control); |
in_purgeif((struct ifnet *)control); |
in_pcbpurgeif(&rawcbtable, (struct ifnet *)control); |
in_pcbpurgeif(&rawcbtable, (struct ifnet *)control); |
return (0); |
return (0); |
Line 467 rip_usrreq(so, req, m, nam, control, p) |
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Line 575 rip_usrreq(so, req, m, nam, control, p) |
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break; |
break; |
inp = sotoinpcb(so); |
inp = sotoinpcb(so); |
inp->inp_ip.ip_p = (long)nam; |
inp->inp_ip.ip_p = (long)nam; |
#ifdef IPSEC |
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error = ipsec_init_policy(so, &inp->inp_sp); |
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if (error != 0) { |
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in_pcbdetach(inp); |
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break; |
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} |
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#endif /*IPSEC*/ |
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break; |
break; |
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case PRU_DETACH: |
case PRU_DETACH: |