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//==========================================================================
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//
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// sys/netinet/udp_usrreq.c
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//
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//
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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 or other sources,
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// and are covered by the appropriate copyright disclaimers included herein.
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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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//#####DESCRIPTIONBEGIN####
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//
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// Author(s): gthomas
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// Contributors: gthomas
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// Date: 2000-01-10
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// Purpose:
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// Description:
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//
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//
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//####DESCRIPTIONEND####
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//
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//==========================================================================
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/* $OpenBSD: udp_usrreq.c,v 1.30 1999/12/12 10:59:41 itojun Exp $ */
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/* $NetBSD: udp_usrreq.c,v 1.28 1996/03/16 23:54:03 christos Exp $ */
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/*
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* Copyright (c) 1982, 1986, 1988, 1990, 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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| 56 |
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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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| 68 |
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* @(#)udp_usrreq.c 8.4 (Berkeley) 1/21/94
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*/
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/*
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%%% portions-copyright-nrl-95
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Portions of this software are Copyright 1995-1998 by Randall Atkinson,
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Ronald Lee, Daniel McDonald, Bao Phan, and Chris Winters. All Rights
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Reserved. All rights under this copyright have been assigned to the US
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Naval Research Laboratory (NRL). The NRL Copyright Notice and License
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| 77 |
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Agreement Version 1.1 (January 17, 1995) applies to these portions of the
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| 78 |
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software.
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| 79 |
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You should have received a copy of the license with this software. If you
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didn't get a copy, you may request one from <license@ipv6.nrl.navy.mil>.
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*/
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| 83 |
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#include <sys/param.h>
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| 84 |
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#include <sys/malloc.h>
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| 85 |
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#include <sys/mbuf.h>
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| 86 |
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#include <sys/protosw.h>
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| 87 |
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#include <sys/socket.h>
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| 88 |
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#include <sys/socketvar.h>
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| 89 |
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#include <sys/errno.h>
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| 90 |
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#ifdef __ECOS
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| 91 |
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#undef errno
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| 92 |
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#endif
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| 93 |
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#ifndef __ECOS
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#include <sys/stat.h>
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| 95 |
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#include <sys/systm.h>
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| 96 |
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#include <sys/proc.h>
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| 97 |
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| 98 |
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#include <vm/vm.h>
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| 99 |
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#include <sys/sysctl.h>
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| 100 |
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#endif
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| 101 |
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#include <net/if.h>
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#include <net/route.h>
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| 105 |
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#include <netinet/in.h>
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| 106 |
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#include <netinet/in_systm.h>
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| 107 |
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#include <netinet/in_var.h>
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| 108 |
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#include <netinet/ip.h>
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| 109 |
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#include <netinet/in_pcb.h>
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| 110 |
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#include <netinet/ip_var.h>
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| 111 |
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#include <netinet/ip_icmp.h>
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| 112 |
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#include <netinet/udp.h>
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| 113 |
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#include <netinet/udp_var.h>
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| 114 |
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| 115 |
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#ifdef IPSEC
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#include <netinet/ip_ipsp.h>
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| 117 |
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| 118 |
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extern int check_ipsec_policy __P((struct inpcb *, u_int32_t));
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#endif
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| 121 |
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#include <machine/stdarg.h>
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| 123 |
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#ifdef INET6
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#ifndef INET
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#include <netinet/in.h>
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| 126 |
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#endif
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| 127 |
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#include <netinet6/ip6.h>
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| 128 |
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#include <netinet6/in6_var.h>
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#include <netinet6/ip6_var.h>
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#include <netinet6/icmp6.h>
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#include <netinet6/ip6protosw.h>
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| 133 |
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#ifndef CREATE_IPV6_MAPPED
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#define CREATE_IPV6_MAPPED(a6, a4) \
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do { \
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bzero(&(a6), sizeof(a6)); \
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(a6).s6_addr[10] = (a6).s6_addr[11] = 0xff; \
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*(u_int32_t *)&(a6).s6_addr[12] = (a4); \
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| 139 |
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} while (0)
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#endif
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| 141 |
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| 142 |
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extern int ip6_defhlim;
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| 143 |
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| 144 |
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#endif /* INET6 */
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| 145 |
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| 146 |
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/*
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| 147 |
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* UDP protocol implementation.
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* Per RFC 768, August, 1980.
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| 149 |
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*/
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| 150 |
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int udpcksum = 1;
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| 151 |
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| 152 |
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| 153 |
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static void udp_detach __P((struct inpcb *));
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static void udp_notify __P((struct inpcb *, int));
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static struct mbuf *udp_saveopt __P((caddr_t, int, int));
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| 156 |
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| 157 |
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#ifndef UDBHASHSIZE
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#define UDBHASHSIZE 128
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#endif
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int udbhashsize = UDBHASHSIZE;
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| 161 |
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| 162 |
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/* from in_pcb.c */
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extern struct baddynamicports baddynamicports;
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| 164 |
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| 165 |
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void
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| 166 |
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udp_init()
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| 167 |
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{
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| 168 |
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| 169 |
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in_pcbinit(&udbtable, udbhashsize);
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| 170 |
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}
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| 171 |
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| 172 |
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#if defined(INET6) && !defined(TCP6)
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| 173 |
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int
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udp6_input(mp, offp, proto)
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| 175 |
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struct mbuf **mp;
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| 176 |
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int *offp, proto;
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| 177 |
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{
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| 178 |
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struct mbuf *m = *mp;
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| 179 |
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| 180 |
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#if defined(NFAITH) && 0 < NFAITH
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| 181 |
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if (m->m_pkthdr.rcvif) {
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| 182 |
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if (m->m_pkthdr.rcvif->if_type == IFT_FAITH) {
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| 183 |
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/* XXX send icmp6 host/port unreach? */
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| 184 |
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m_freem(m);
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| 185 |
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return IPPROTO_DONE;
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}
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| 187 |
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}
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| 188 |
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#endif
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| 189 |
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| 190 |
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udp_input(m, *offp, proto);
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return IPPROTO_DONE;
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}
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| 193 |
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#endif
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| 195 |
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void
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| 196 |
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#if __STDC__
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| 197 |
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udp_input(struct mbuf *m, ...)
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| 198 |
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#else
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| 199 |
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udp_input(m, va_alist)
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| 200 |
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struct mbuf *m;
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| 201 |
|
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va_dcl
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|
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#endif
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| 203 |
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{
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| 204 |
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register struct ip *ip;
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| 205 |
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register struct udphdr *uh;
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| 206 |
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register struct inpcb *inp;
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| 207 |
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struct mbuf *opts = 0;
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| 208 |
|
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int len;
|
| 209 |
|
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struct ip save_ip;
|
| 210 |
|
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int iphlen;
|
| 211 |
|
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va_list ap;
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| 212 |
|
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u_int16_t savesum;
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| 213 |
|
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union {
|
| 214 |
|
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struct sockaddr sa;
|
| 215 |
|
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struct sockaddr_in sin;
|
| 216 |
|
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#ifdef INET6
|
| 217 |
|
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struct sockaddr_in6 sin6;
|
| 218 |
|
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#endif /* INET6 */
|
| 219 |
|
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} srcsa, dstsa;
|
| 220 |
|
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#ifdef INET6
|
| 221 |
|
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struct ip6_hdr *ipv6;
|
| 222 |
|
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struct sockaddr_in6 src_v4mapped;
|
| 223 |
|
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#endif /* INET6 */
|
| 224 |
|
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#ifdef IPSEC
|
| 225 |
|
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struct tdb *tdb = NULL;
|
| 226 |
|
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#endif /* IPSEC */
|
| 227 |
|
|
|
| 228 |
|
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va_start(ap, m);
|
| 229 |
|
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iphlen = va_arg(ap, int);
|
| 230 |
|
|
va_end(ap);
|
| 231 |
|
|
|
| 232 |
|
|
udpstat.udps_ipackets++;
|
| 233 |
|
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|
| 234 |
|
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#ifdef IPSEC
|
| 235 |
|
|
/* Save the last SA which was used to process the mbuf */
|
| 236 |
|
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if ((m->m_flags & (M_CONF|M_AUTH)) && m->m_pkthdr.tdbi) {
|
| 237 |
|
|
struct tdb_ident *tdbi = m->m_pkthdr.tdbi;
|
| 238 |
|
|
/* XXX gettdb() should really be called at spltdb(). */
|
| 239 |
|
|
/* XXX this is splsoftnet(), currently they are the same. */
|
| 240 |
|
|
tdb = gettdb(tdbi->spi, &tdbi->dst, tdbi->proto);
|
| 241 |
|
|
free(m->m_pkthdr.tdbi, M_TEMP);
|
| 242 |
|
|
m->m_pkthdr.tdbi = NULL;
|
| 243 |
|
|
}
|
| 244 |
|
|
#endif /* IPSEC */
|
| 245 |
|
|
|
| 246 |
|
|
switch (mtod(m, struct ip *)->ip_v) {
|
| 247 |
|
|
case 4:
|
| 248 |
|
|
ip = mtod(m, struct ip *);
|
| 249 |
|
|
#ifdef INET6
|
| 250 |
|
|
ipv6 = NULL;
|
| 251 |
|
|
#endif /* INET6 */
|
| 252 |
|
|
srcsa.sa.sa_family = AF_INET;
|
| 253 |
|
|
break;
|
| 254 |
|
|
#ifdef INET6
|
| 255 |
|
|
case 6:
|
| 256 |
|
|
ip = NULL;
|
| 257 |
|
|
ipv6 = mtod(m, struct ip6_hdr *);
|
| 258 |
|
|
srcsa.sa.sa_family = AF_INET6;
|
| 259 |
|
|
break;
|
| 260 |
|
|
#endif /* INET6 */
|
| 261 |
|
|
default:
|
| 262 |
|
|
#ifdef __ECOS
|
| 263 |
|
|
diag_printf("udp_input: received unknown IP version %d",
|
| 264 |
|
|
mtod(m, struct ip *)->ip_v);
|
| 265 |
|
|
#else
|
| 266 |
|
|
printf("udp_input: received unknown IP version %d",
|
| 267 |
|
|
mtod(m, struct ip *)->ip_v);
|
| 268 |
|
|
#endif
|
| 269 |
|
|
goto bad;
|
| 270 |
|
|
}
|
| 271 |
|
|
|
| 272 |
|
|
/*
|
| 273 |
|
|
* Strip IP options, if any; should skip this,
|
| 274 |
|
|
* make available to user, and use on returned packets,
|
| 275 |
|
|
* but we don't yet have a way to check the checksum
|
| 276 |
|
|
* with options still present.
|
| 277 |
|
|
*/
|
| 278 |
|
|
/*
|
| 279 |
|
|
* (contd. from above...) Furthermore, we may want to strip options
|
| 280 |
|
|
* for such things as ICMP errors, where options just get in the way.
|
| 281 |
|
|
*/
|
| 282 |
|
|
if (ip && iphlen > sizeof (struct ip)) {
|
| 283 |
|
|
ip_stripoptions(m, (struct mbuf *)0);
|
| 284 |
|
|
iphlen = sizeof(struct ip);
|
| 285 |
|
|
}
|
| 286 |
|
|
|
| 287 |
|
|
/*
|
| 288 |
|
|
* Get IP and UDP header together in first mbuf.
|
| 289 |
|
|
*/
|
| 290 |
|
|
if (m->m_len < iphlen + sizeof(struct udphdr)) {
|
| 291 |
|
|
if ((m = m_pullup2(m, iphlen + sizeof(struct udphdr))) == 0) {
|
| 292 |
|
|
udpstat.udps_hdrops++;
|
| 293 |
|
|
return;
|
| 294 |
|
|
}
|
| 295 |
|
|
#ifdef INET6
|
| 296 |
|
|
if (ipv6)
|
| 297 |
|
|
ipv6 = mtod(m, struct ip6_hdr *);
|
| 298 |
|
|
else
|
| 299 |
|
|
#endif /* INET6 */
|
| 300 |
|
|
ip = mtod(m, struct ip *);
|
| 301 |
|
|
}
|
| 302 |
|
|
uh = (struct udphdr *)(mtod(m, caddr_t) + iphlen);
|
| 303 |
|
|
|
| 304 |
|
|
/*
|
| 305 |
|
|
* Make mbuf data length reflect UDP length.
|
| 306 |
|
|
* If not enough data to reflect UDP length, drop.
|
| 307 |
|
|
*/
|
| 308 |
|
|
len = ntohs((u_int16_t)uh->uh_ulen);
|
| 309 |
|
|
if (m->m_pkthdr.len - iphlen != len) {
|
| 310 |
|
|
if (len > (m->m_pkthdr.len - iphlen) ||
|
| 311 |
|
|
len < sizeof(struct udphdr)) {
|
| 312 |
|
|
udpstat.udps_badlen++;
|
| 313 |
|
|
goto bad;
|
| 314 |
|
|
}
|
| 315 |
|
|
m_adj(m, len - (m->m_pkthdr.len - iphlen));
|
| 316 |
|
|
}
|
| 317 |
|
|
/*
|
| 318 |
|
|
* Save a copy of the IP header in case we want restore it
|
| 319 |
|
|
* for sending an ICMP error message in response.
|
| 320 |
|
|
*/
|
| 321 |
|
|
if (ip)
|
| 322 |
|
|
save_ip = *ip;
|
| 323 |
|
|
|
| 324 |
|
|
/*
|
| 325 |
|
|
* Checksum extended UDP header and data.
|
| 326 |
|
|
* from W.R.Stevens: check incoming udp cksums even if
|
| 327 |
|
|
* udpcksum is not set.
|
| 328 |
|
|
*/
|
| 329 |
|
|
savesum = uh->uh_sum;
|
| 330 |
|
|
#ifdef INET6
|
| 331 |
|
|
if (ipv6) {
|
| 332 |
|
|
/*
|
| 333 |
|
|
* In IPv6, the UDP checksum is ALWAYS used.
|
| 334 |
|
|
*/
|
| 335 |
|
|
if ((uh->uh_sum = in6_cksum(m, IPPROTO_UDP, iphlen, len))) {
|
| 336 |
|
|
udpstat.udps_badsum++;
|
| 337 |
|
|
goto bad;
|
| 338 |
|
|
}
|
| 339 |
|
|
} else
|
| 340 |
|
|
#endif /* INET6 */
|
| 341 |
|
|
if (uh->uh_sum) {
|
| 342 |
|
|
bzero(((struct ipovly *)ip)->ih_x1,
|
| 343 |
|
|
sizeof ((struct ipovly *)ip)->ih_x1);
|
| 344 |
|
|
((struct ipovly *)ip)->ih_len = uh->uh_ulen;
|
| 345 |
|
|
if ((uh->uh_sum = in_cksum(m, len + sizeof (struct ip))) != 0) {
|
| 346 |
|
|
udpstat.udps_badsum++;
|
| 347 |
|
|
m_freem(m);
|
| 348 |
|
|
return;
|
| 349 |
|
|
}
|
| 350 |
|
|
} else
|
| 351 |
|
|
udpstat.udps_nosum++;
|
| 352 |
|
|
|
| 353 |
|
|
switch (srcsa.sa.sa_family) {
|
| 354 |
|
|
case AF_INET:
|
| 355 |
|
|
bzero(&srcsa, sizeof(struct sockaddr_in));
|
| 356 |
|
|
srcsa.sin.sin_len = sizeof(struct sockaddr_in);
|
| 357 |
|
|
srcsa.sin.sin_family = AF_INET;
|
| 358 |
|
|
srcsa.sin.sin_port = uh->uh_sport;
|
| 359 |
|
|
srcsa.sin.sin_addr = ip->ip_src;
|
| 360 |
|
|
|
| 361 |
|
|
#ifdef INET6
|
| 362 |
|
|
bzero(&src_v4mapped, sizeof(struct sockaddr_in6));
|
| 363 |
|
|
src_v4mapped.sin6_len = sizeof(struct sockaddr_in6);
|
| 364 |
|
|
src_v4mapped.sin6_family = AF_INET6;
|
| 365 |
|
|
src_v4mapped.sin6_port = uh->uh_sport;
|
| 366 |
|
|
CREATE_IPV6_MAPPED(src_v4mapped.sin6_addr, ip->ip_src.s_addr);
|
| 367 |
|
|
#endif /* INET6 */
|
| 368 |
|
|
|
| 369 |
|
|
bzero(&dstsa, sizeof(struct sockaddr_in));
|
| 370 |
|
|
dstsa.sin.sin_len = sizeof(struct sockaddr_in);
|
| 371 |
|
|
dstsa.sin.sin_family = AF_INET;
|
| 372 |
|
|
dstsa.sin.sin_port = uh->uh_dport;
|
| 373 |
|
|
dstsa.sin.sin_addr = ip->ip_dst;
|
| 374 |
|
|
break;
|
| 375 |
|
|
#ifdef INET6
|
| 376 |
|
|
case AF_INET6:
|
| 377 |
|
|
bzero(&srcsa, sizeof(struct sockaddr_in6));
|
| 378 |
|
|
srcsa.sin6.sin6_len = sizeof(struct sockaddr_in6);
|
| 379 |
|
|
srcsa.sin6.sin6_family = AF_INET6;
|
| 380 |
|
|
srcsa.sin6.sin6_port = uh->uh_sport;
|
| 381 |
|
|
srcsa.sin6.sin6_flowinfo = htonl(0x0fffffff) & ipv6->ip6_flow;
|
| 382 |
|
|
srcsa.sin6.sin6_addr = ipv6->ip6_src;
|
| 383 |
|
|
if (IN6_IS_SCOPE_LINKLOCAL(&srcsa.sin6.sin6_addr))
|
| 384 |
|
|
srcsa.sin6.sin6_addr.s6_addr16[1] = 0;
|
| 385 |
|
|
if (m->m_pkthdr.rcvif) {
|
| 386 |
|
|
if (IN6_IS_SCOPE_LINKLOCAL(&srcsa.sin6.sin6_addr)) {
|
| 387 |
|
|
srcsa.sin6.sin6_scope_id =
|
| 388 |
|
|
m->m_pkthdr.rcvif->if_index;
|
| 389 |
|
|
} else
|
| 390 |
|
|
srcsa.sin6.sin6_scope_id = 0;
|
| 391 |
|
|
} else
|
| 392 |
|
|
srcsa.sin6.sin6_scope_id = 0;
|
| 393 |
|
|
|
| 394 |
|
|
bzero(&dstsa, sizeof(struct sockaddr_in6));
|
| 395 |
|
|
dstsa.sin6.sin6_len = sizeof(struct sockaddr_in6);
|
| 396 |
|
|
dstsa.sin6.sin6_family = AF_INET6;
|
| 397 |
|
|
dstsa.sin6.sin6_port = uh->uh_dport;
|
| 398 |
|
|
dstsa.sin6.sin6_addr = ipv6->ip6_dst;
|
| 399 |
|
|
break;
|
| 400 |
|
|
#endif /* INET6 */
|
| 401 |
|
|
}
|
| 402 |
|
|
|
| 403 |
|
|
#ifdef INET6
|
| 404 |
|
|
if ((ipv6 && IN6_IS_ADDR_MULTICAST(&ipv6->ip6_dst)) ||
|
| 405 |
|
|
(ip && IN_MULTICAST(ip->ip_dst.s_addr)) ||
|
| 406 |
|
|
(ip && in_broadcast(ip->ip_dst, m->m_pkthdr.rcvif))) {
|
| 407 |
|
|
#else /* INET6 */
|
| 408 |
|
|
if (IN_MULTICAST(ip->ip_dst.s_addr) ||
|
| 409 |
|
|
in_broadcast(ip->ip_dst, m->m_pkthdr.rcvif)) {
|
| 410 |
|
|
#endif /* INET6 */
|
| 411 |
|
|
struct socket *last;
|
| 412 |
|
|
/*
|
| 413 |
|
|
* Deliver a multicast or broadcast datagram to *all* sockets
|
| 414 |
|
|
* for which the local and remote addresses and ports match
|
| 415 |
|
|
* those of the incoming datagram. This allows more than
|
| 416 |
|
|
* one process to receive multi/broadcasts on the same port.
|
| 417 |
|
|
* (This really ought to be done for unicast datagrams as
|
| 418 |
|
|
* well, but that would cause problems with existing
|
| 419 |
|
|
* applications that open both address-specific sockets and
|
| 420 |
|
|
* a wildcard socket listening to the same port -- they would
|
| 421 |
|
|
* end up receiving duplicates of every unicast datagram.
|
| 422 |
|
|
* Those applications open the multiple sockets to overcome an
|
| 423 |
|
|
* inadequacy of the UDP socket interface, but for backwards
|
| 424 |
|
|
* compatibility we avoid the problem here rather than
|
| 425 |
|
|
* fixing the interface. Maybe 4.5BSD will remedy this?)
|
| 426 |
|
|
*/
|
| 427 |
|
|
|
| 428 |
|
|
iphlen += sizeof(struct udphdr);
|
| 429 |
|
|
|
| 430 |
|
|
/*
|
| 431 |
|
|
* Locate pcb(s) for datagram.
|
| 432 |
|
|
* (Algorithm copied from raw_intr().)
|
| 433 |
|
|
*/
|
| 434 |
|
|
last = NULL;
|
| 435 |
|
|
for (inp = udbtable.inpt_queue.cqh_first;
|
| 436 |
|
|
inp != (struct inpcb *)&udbtable.inpt_queue;
|
| 437 |
|
|
inp = inp->inp_queue.cqe_next) {
|
| 438 |
|
|
if (inp->inp_lport != uh->uh_dport)
|
| 439 |
|
|
continue;
|
| 440 |
|
|
#ifdef INET6
|
| 441 |
|
|
if (ipv6) {
|
| 442 |
|
|
if (!(inp->inp_flags & INP_IPV6))
|
| 443 |
|
|
continue;
|
| 444 |
|
|
if (!IN6_IS_ADDR_UNSPECIFIED(&inp->inp_laddr6))
|
| 445 |
|
|
if (!IN6_ARE_ADDR_EQUAL(&inp->inp_laddr6,
|
| 446 |
|
|
&ipv6->ip6_dst))
|
| 447 |
|
|
continue;
|
| 448 |
|
|
} else
|
| 449 |
|
|
#endif /* INET6 */
|
| 450 |
|
|
if (inp->inp_laddr.s_addr != INADDR_ANY) {
|
| 451 |
|
|
if (inp->inp_laddr.s_addr !=
|
| 452 |
|
|
ip->ip_dst.s_addr)
|
| 453 |
|
|
continue;
|
| 454 |
|
|
}
|
| 455 |
|
|
#ifdef INET6
|
| 456 |
|
|
if (ipv6) {
|
| 457 |
|
|
if (!IN6_IS_ADDR_UNSPECIFIED(&inp->inp_faddr6))
|
| 458 |
|
|
if (!IN6_ARE_ADDR_EQUAL(&inp->inp_faddr6,
|
| 459 |
|
|
&ipv6->ip6_src) ||
|
| 460 |
|
|
inp->inp_fport != uh->uh_sport)
|
| 461 |
|
|
continue;
|
| 462 |
|
|
} else
|
| 463 |
|
|
#endif /* INET6 */
|
| 464 |
|
|
if (inp->inp_faddr.s_addr != INADDR_ANY) {
|
| 465 |
|
|
if (inp->inp_faddr.s_addr !=
|
| 466 |
|
|
ip->ip_src.s_addr ||
|
| 467 |
|
|
inp->inp_fport != uh->uh_sport)
|
| 468 |
|
|
continue;
|
| 469 |
|
|
}
|
| 470 |
|
|
|
| 471 |
|
|
if (last != NULL) {
|
| 472 |
|
|
struct mbuf *n;
|
| 473 |
|
|
|
| 474 |
|
|
if ((n = m_copy(m, 0, M_COPYALL)) != NULL) {
|
| 475 |
|
|
opts = NULL;
|
| 476 |
|
|
#ifdef INET6
|
| 477 |
|
|
if (ipv6 && (inp->inp_flags & IN6P_CONTROLOPTS))
|
| 478 |
|
|
ip6_savecontrol(inp, &opts, ipv6, n);
|
| 479 |
|
|
#endif /* INET6 */
|
| 480 |
|
|
m_adj(n, iphlen);
|
| 481 |
|
|
if (sbappendaddr(&last->so_rcv,
|
| 482 |
|
|
#ifdef INET6
|
| 483 |
|
|
/*
|
| 484 |
|
|
* This cruft is needed in (the rare)
|
| 485 |
|
|
* case I deliver a {multi,broad}cast
|
| 486 |
|
|
* IPv4 packet to an AF_INET6 socket.
|
| 487 |
|
|
*/
|
| 488 |
|
|
((((struct inpcb *)last->so_pcb)->inp_flags
|
| 489 |
|
|
& INP_IPV6) && ip) ?
|
| 490 |
|
|
(struct sockaddr *)&src_v4mapped :
|
| 491 |
|
|
#endif /* INET6 */
|
| 492 |
|
|
&srcsa.sa, n, opts) == 0) {
|
| 493 |
|
|
m_freem(n);
|
| 494 |
|
|
udpstat.udps_fullsock++;
|
| 495 |
|
|
} else
|
| 496 |
|
|
sorwakeup(last);
|
| 497 |
|
|
}
|
| 498 |
|
|
}
|
| 499 |
|
|
last = inp->inp_socket;
|
| 500 |
|
|
/*
|
| 501 |
|
|
* Don't look for additional matches if this one does
|
| 502 |
|
|
* not have either the SO_REUSEPORT or SO_REUSEADDR
|
| 503 |
|
|
* socket options set. This heuristic avoids searching
|
| 504 |
|
|
* through all pcbs in the common case of a non-shared
|
| 505 |
|
|
* port. It * assumes that an application will never
|
| 506 |
|
|
* clear these options after setting them.
|
| 507 |
|
|
*/
|
| 508 |
|
|
if ((last->so_options&(SO_REUSEPORT|SO_REUSEADDR)) == 0)
|
| 509 |
|
|
break;
|
| 510 |
|
|
}
|
| 511 |
|
|
|
| 512 |
|
|
if (last == NULL) {
|
| 513 |
|
|
/*
|
| 514 |
|
|
* No matching pcb found; discard datagram.
|
| 515 |
|
|
* (No need to send an ICMP Port Unreachable
|
| 516 |
|
|
* for a broadcast or multicast datgram.)
|
| 517 |
|
|
*/
|
| 518 |
|
|
udpstat.udps_noportbcast++;
|
| 519 |
|
|
goto bad;
|
| 520 |
|
|
}
|
| 521 |
|
|
|
| 522 |
|
|
opts = NULL;
|
| 523 |
|
|
#ifdef INET6
|
| 524 |
|
|
if (ipv6 && (inp->inp_flags & IN6P_CONTROLOPTS))
|
| 525 |
|
|
ip6_savecontrol(inp, &opts, ipv6, m);
|
| 526 |
|
|
#endif /* INET6 */
|
| 527 |
|
|
m_adj(m, iphlen);
|
| 528 |
|
|
if (sbappendaddr(&last->so_rcv,
|
| 529 |
|
|
#ifdef INET6
|
| 530 |
|
|
/*
|
| 531 |
|
|
* This cruft is needed in (the rare) case I
|
| 532 |
|
|
* deliver a {multi,broad}cast IPv4 packet to
|
| 533 |
|
|
* an AF_INET6 socket.
|
| 534 |
|
|
*/
|
| 535 |
|
|
((((struct inpcb *)last->so_pcb)->inp_flags & INP_IPV6) && ip) ?
|
| 536 |
|
|
(struct sockaddr *)&src_v4mapped :
|
| 537 |
|
|
#endif /* INET6 */
|
| 538 |
|
|
&srcsa.sa, m, opts) == 0) {
|
| 539 |
|
|
udpstat.udps_fullsock++;
|
| 540 |
|
|
goto bad;
|
| 541 |
|
|
}
|
| 542 |
|
|
sorwakeup(last);
|
| 543 |
|
|
return;
|
| 544 |
|
|
}
|
| 545 |
|
|
/*
|
| 546 |
|
|
* Locate pcb for datagram.
|
| 547 |
|
|
*/
|
| 548 |
|
|
#ifdef INET6
|
| 549 |
|
|
if (ipv6)
|
| 550 |
|
|
inp = in6_pcbhashlookup(&udbtable, &ipv6->ip6_src, uh->uh_sport,
|
| 551 |
|
|
&ipv6->ip6_dst, uh->uh_dport);
|
| 552 |
|
|
else
|
| 553 |
|
|
#endif /* INET6 */
|
| 554 |
|
|
inp = in_pcbhashlookup(&udbtable, ip->ip_src, uh->uh_sport,
|
| 555 |
|
|
ip->ip_dst, uh->uh_dport);
|
| 556 |
|
|
if (inp == 0) {
|
| 557 |
|
|
++udpstat.udps_pcbhashmiss;
|
| 558 |
|
|
#ifdef INET6
|
| 559 |
|
|
if (ipv6) {
|
| 560 |
|
|
inp = in_pcblookup(&udbtable,
|
| 561 |
|
|
(struct in_addr *)&(ipv6->ip6_src),
|
| 562 |
|
|
uh->uh_sport, (struct in_addr *)&(ipv6->ip6_dst),
|
| 563 |
|
|
uh->uh_dport, INPLOOKUP_WILDCARD | INPLOOKUP_IPV6);
|
| 564 |
|
|
} else
|
| 565 |
|
|
#endif /* INET6 */
|
| 566 |
|
|
inp = in_pcblookup(&udbtable, &ip->ip_src, uh->uh_sport,
|
| 567 |
|
|
&ip->ip_dst, uh->uh_dport, INPLOOKUP_WILDCARD);
|
| 568 |
|
|
if (inp == 0) {
|
| 569 |
|
|
udpstat.udps_noport++;
|
| 570 |
|
|
if (m->m_flags & (M_BCAST | M_MCAST)) {
|
| 571 |
|
|
udpstat.udps_noportbcast++;
|
| 572 |
|
|
goto bad;
|
| 573 |
|
|
}
|
| 574 |
|
|
#ifdef INET6
|
| 575 |
|
|
if (ipv6) {
|
| 576 |
|
|
icmp6_error(m, ICMP6_DST_UNREACH,
|
| 577 |
|
|
ICMP6_DST_UNREACH_NOPORT,0);
|
| 578 |
|
|
} else
|
| 579 |
|
|
#endif /* INET6 */
|
| 580 |
|
|
{
|
| 581 |
|
|
*ip = save_ip;
|
| 582 |
|
|
HTONS(ip->ip_len);
|
| 583 |
|
|
HTONS(ip->ip_id);
|
| 584 |
|
|
HTONS(ip->ip_off);
|
| 585 |
|
|
uh->uh_sum = savesum;
|
| 586 |
|
|
icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PORT,
|
| 587 |
|
|
0, 0);
|
| 588 |
|
|
}
|
| 589 |
|
|
return;
|
| 590 |
|
|
}
|
| 591 |
|
|
}
|
| 592 |
|
|
|
| 593 |
|
|
#ifdef IPSEC
|
| 594 |
|
|
/* Check if this socket requires security for incoming packets */
|
| 595 |
|
|
if ((inp->inp_seclevel[SL_AUTH] >= IPSEC_LEVEL_REQUIRE &&
|
| 596 |
|
|
!(m->m_flags & M_AUTH)) ||
|
| 597 |
|
|
(inp->inp_seclevel[SL_ESP_TRANS] >= IPSEC_LEVEL_REQUIRE &&
|
| 598 |
|
|
!(m->m_flags & M_CONF))) {
|
| 599 |
|
|
#ifdef notyet
|
| 600 |
|
|
#ifdef INET6
|
| 601 |
|
|
if (ipv6)
|
| 602 |
|
|
ipv6_icmp_error(m, ICMPV6_BLAH, ICMPV6_BLAH, 0);
|
| 603 |
|
|
else
|
| 604 |
|
|
#endif /* INET6 */
|
| 605 |
|
|
icmp_error(m, ICMP_BLAH, ICMP_BLAH, 0, 0);
|
| 606 |
|
|
m = NULL;
|
| 607 |
|
|
#endif /* notyet */
|
| 608 |
|
|
udpstat.udps_nosec++;
|
| 609 |
|
|
goto bad;
|
| 610 |
|
|
}
|
| 611 |
|
|
/* Use tdb_bind_out for this inp's outbound communication */
|
| 612 |
|
|
if (tdb)
|
| 613 |
|
|
tdb_add_inp(tdb, inp);
|
| 614 |
|
|
#endif /*IPSEC */
|
| 615 |
|
|
|
| 616 |
|
|
opts = NULL;
|
| 617 |
|
|
#ifdef INET6
|
| 618 |
|
|
if (ipv6 && (inp->inp_flags & IN6P_CONTROLOPTS))
|
| 619 |
|
|
ip6_savecontrol(inp, &opts, ipv6, m);
|
| 620 |
|
|
#endif /* INET6 */
|
| 621 |
|
|
if (ip && (inp->inp_flags & INP_CONTROLOPTS)) {
|
| 622 |
|
|
struct mbuf **mp = &opts;
|
| 623 |
|
|
|
| 624 |
|
|
if (inp->inp_flags & INP_RECVDSTADDR) {
|
| 625 |
|
|
*mp = udp_saveopt((caddr_t) &ip->ip_dst,
|
| 626 |
|
|
sizeof(struct in_addr), IP_RECVDSTADDR);
|
| 627 |
|
|
if (*mp)
|
| 628 |
|
|
mp = &(*mp)->m_next;
|
| 629 |
|
|
}
|
| 630 |
|
|
#ifdef notyet
|
| 631 |
|
|
/* options were tossed above */
|
| 632 |
|
|
if (inp->inp_flags & INP_RECVOPTS) {
|
| 633 |
|
|
*mp = udp_saveopt((caddr_t) opts_deleted_above,
|
| 634 |
|
|
sizeof(struct in_addr), IP_RECVOPTS);
|
| 635 |
|
|
if (*mp)
|
| 636 |
|
|
mp = &(*mp)->m_next;
|
| 637 |
|
|
}
|
| 638 |
|
|
/* ip_srcroute doesn't do what we want here, need to fix */
|
| 639 |
|
|
if (inp->inp_flags & INP_RECVRETOPTS) {
|
| 640 |
|
|
*mp = udp_saveopt((caddr_t) ip_srcroute(),
|
| 641 |
|
|
sizeof(struct in_addr), IP_RECVRETOPTS);
|
| 642 |
|
|
if (*mp)
|
| 643 |
|
|
mp = &(*mp)->m_next;
|
| 644 |
|
|
}
|
| 645 |
|
|
#endif
|
| 646 |
|
|
}
|
| 647 |
|
|
iphlen += sizeof(struct udphdr);
|
| 648 |
|
|
m_adj(m, iphlen);
|
| 649 |
|
|
if (sbappendaddr(&inp->inp_socket->so_rcv,
|
| 650 |
|
|
#ifdef INET6
|
| 651 |
|
|
/*
|
| 652 |
|
|
* This cruft is needed to deliver a IPv4 packet to
|
| 653 |
|
|
* an AF_INET6 socket.
|
| 654 |
|
|
*/
|
| 655 |
|
|
((((struct inpcb *)inp->inp_socket->so_pcb)->inp_flags & INP_IPV6)
|
| 656 |
|
|
&& ip) ? (struct sockaddr *)&src_v4mapped :
|
| 657 |
|
|
#endif /* INET6 */
|
| 658 |
|
|
&srcsa.sa, m, opts) == 0) {
|
| 659 |
|
|
udpstat.udps_fullsock++;
|
| 660 |
|
|
goto bad;
|
| 661 |
|
|
}
|
| 662 |
|
|
sorwakeup(inp->inp_socket);
|
| 663 |
|
|
return;
|
| 664 |
|
|
bad:
|
| 665 |
|
|
m_freem(m);
|
| 666 |
|
|
if (opts)
|
| 667 |
|
|
m_freem(opts);
|
| 668 |
|
|
}
|
| 669 |
|
|
|
| 670 |
|
|
/*
|
| 671 |
|
|
* Create a "control" mbuf containing the specified data
|
| 672 |
|
|
* with the specified type for presentation with a datagram.
|
| 673 |
|
|
*/
|
| 674 |
|
|
struct mbuf *
|
| 675 |
|
|
udp_saveopt(p, size, type)
|
| 676 |
|
|
caddr_t p;
|
| 677 |
|
|
register int size;
|
| 678 |
|
|
int type;
|
| 679 |
|
|
{
|
| 680 |
|
|
register struct cmsghdr *cp;
|
| 681 |
|
|
struct mbuf *m;
|
| 682 |
|
|
|
| 683 |
|
|
if ((m = m_get(M_DONTWAIT, MT_CONTROL)) == NULL)
|
| 684 |
|
|
return ((struct mbuf *) NULL);
|
| 685 |
|
|
cp = (struct cmsghdr *) mtod(m, struct cmsghdr *);
|
| 686 |
|
|
bcopy(p, CMSG_DATA(cp), size);
|
| 687 |
|
|
size += sizeof(*cp);
|
| 688 |
|
|
m->m_len = size;
|
| 689 |
|
|
cp->cmsg_len = size;
|
| 690 |
|
|
cp->cmsg_level = IPPROTO_IP;
|
| 691 |
|
|
cp->cmsg_type = type;
|
| 692 |
|
|
return (m);
|
| 693 |
|
|
}
|
| 694 |
|
|
|
| 695 |
|
|
/*
|
| 696 |
|
|
* Notify a udp user of an asynchronous error;
|
| 697 |
|
|
* just wake up so that he can collect error status.
|
| 698 |
|
|
*/
|
| 699 |
|
|
static void
|
| 700 |
|
|
udp_notify(inp, errno)
|
| 701 |
|
|
register struct inpcb *inp;
|
| 702 |
|
|
int errno;
|
| 703 |
|
|
{
|
| 704 |
|
|
inp->inp_socket->so_error = errno;
|
| 705 |
|
|
sorwakeup(inp->inp_socket);
|
| 706 |
|
|
sowwakeup(inp->inp_socket);
|
| 707 |
|
|
}
|
| 708 |
|
|
|
| 709 |
|
|
#if defined(INET6) && !defined(TCP6)
|
| 710 |
|
|
void
|
| 711 |
|
|
udp6_ctlinput(cmd, sa, d)
|
| 712 |
|
|
int cmd;
|
| 713 |
|
|
struct sockaddr *sa;
|
| 714 |
|
|
void *d;
|
| 715 |
|
|
{
|
| 716 |
|
|
struct sockaddr_in6 sa6;
|
| 717 |
|
|
struct ip6_hdr *ip6;
|
| 718 |
|
|
struct mbuf *m;
|
| 719 |
|
|
int off;
|
| 720 |
|
|
|
| 721 |
|
|
if (sa == NULL)
|
| 722 |
|
|
return;
|
| 723 |
|
|
if (sa->sa_family != AF_INET6)
|
| 724 |
|
|
return;
|
| 725 |
|
|
|
| 726 |
|
|
/* decode parameter from icmp6. */
|
| 727 |
|
|
if (d != NULL) {
|
| 728 |
|
|
struct ip6ctlparam *ip6cp = (struct ip6ctlparam *)d;
|
| 729 |
|
|
ip6 = ip6cp->ip6c_ip6;
|
| 730 |
|
|
m = ip6cp->ip6c_m;
|
| 731 |
|
|
off = ip6cp->ip6c_off;
|
| 732 |
|
|
} else
|
| 733 |
|
|
return;
|
| 734 |
|
|
|
| 735 |
|
|
/* translate addresses into internal form */
|
| 736 |
|
|
sa6 = *(struct sockaddr_in6 *)sa;
|
| 737 |
|
|
if (IN6_IS_ADDR_LINKLOCAL(&sa6.sin6_addr) && m && m->m_pkthdr.rcvif)
|
| 738 |
|
|
sa6.sin6_addr.s6_addr16[1] = htons(m->m_pkthdr.rcvif->if_index);
|
| 739 |
|
|
sa = (struct sockaddr *)&sa6;
|
| 740 |
|
|
|
| 741 |
|
|
(void)udp_ctlinput(cmd, sa, (void *)ip6);
|
| 742 |
|
|
}
|
| 743 |
|
|
#endif
|
| 744 |
|
|
|
| 745 |
|
|
void *
|
| 746 |
|
|
udp_ctlinput(cmd, sa, v)
|
| 747 |
|
|
int cmd;
|
| 748 |
|
|
struct sockaddr *sa;
|
| 749 |
|
|
void *v;
|
| 750 |
|
|
{
|
| 751 |
|
|
register struct ip *ip = v;
|
| 752 |
|
|
register struct udphdr *uh;
|
| 753 |
|
|
extern int inetctlerrmap[];
|
| 754 |
|
|
void (*notify) __P((struct inpcb *, int)) = udp_notify;
|
| 755 |
|
|
int errno;
|
| 756 |
|
|
|
| 757 |
|
|
if ((unsigned)cmd >= PRC_NCMDS)
|
| 758 |
|
|
return NULL;
|
| 759 |
|
|
errno = inetctlerrmap[cmd];
|
| 760 |
|
|
if (PRC_IS_REDIRECT(cmd))
|
| 761 |
|
|
notify = in_rtchange, ip = 0;
|
| 762 |
|
|
else if (cmd == PRC_HOSTDEAD)
|
| 763 |
|
|
ip = 0;
|
| 764 |
|
|
else if (errno == 0)
|
| 765 |
|
|
return NULL;
|
| 766 |
|
|
if (sa == NULL)
|
| 767 |
|
|
return NULL;
|
| 768 |
|
|
#ifdef INET6
|
| 769 |
|
|
if (sa->sa_family == AF_INET6) {
|
| 770 |
|
|
if (ip) {
|
| 771 |
|
|
struct ip6_hdr *ipv6 = (struct ip6_hdr *)ip;
|
| 772 |
|
|
|
| 773 |
|
|
uh = (struct udphdr *)((caddr_t)ipv6 + sizeof(struct ip6_hdr));
|
| 774 |
|
|
#if 0 /*XXX*/
|
| 775 |
|
|
in6_pcbnotify(&udbtable, sa, uh->uh_dport,
|
| 776 |
|
|
&(ipv6->ip6_src), uh->uh_sport, cmd, udp_notify);
|
| 777 |
|
|
#endif
|
| 778 |
|
|
} else {
|
| 779 |
|
|
#if 0 /*XXX*/
|
| 780 |
|
|
in6_pcbnotify(&udbtable, sa, 0,
|
| 781 |
|
|
(struct in6_addr *)&in6addr_any, 0, cmd, udp_notify);
|
| 782 |
|
|
#endif
|
| 783 |
|
|
}
|
| 784 |
|
|
} else
|
| 785 |
|
|
#endif /* INET6 */
|
| 786 |
|
|
if (ip) {
|
| 787 |
|
|
uh = (struct udphdr *)((caddr_t)ip + (ip->ip_hl << 2));
|
| 788 |
|
|
in_pcbnotify(&udbtable, sa, uh->uh_dport, ip->ip_src,
|
| 789 |
|
|
uh->uh_sport, errno, notify);
|
| 790 |
|
|
} else
|
| 791 |
|
|
in_pcbnotifyall(&udbtable, sa, errno, notify);
|
| 792 |
|
|
return NULL;
|
| 793 |
|
|
}
|
| 794 |
|
|
|
| 795 |
|
|
int
|
| 796 |
|
|
#if __STDC__
|
| 797 |
|
|
udp_output(struct mbuf *m, ...)
|
| 798 |
|
|
#else
|
| 799 |
|
|
udp_output(m, va_alist)
|
| 800 |
|
|
struct mbuf *m;
|
| 801 |
|
|
va_dcl
|
| 802 |
|
|
#endif
|
| 803 |
|
|
{
|
| 804 |
|
|
register struct inpcb *inp;
|
| 805 |
|
|
struct mbuf *addr, *control;
|
| 806 |
|
|
register struct udpiphdr *ui;
|
| 807 |
|
|
register int len = m->m_pkthdr.len;
|
| 808 |
|
|
struct in_addr laddr;
|
| 809 |
|
|
int s = 0, error = 0;
|
| 810 |
|
|
va_list ap;
|
| 811 |
|
|
#ifdef INET6
|
| 812 |
|
|
register struct in6_addr laddr6;
|
| 813 |
|
|
int v6packet = 0;
|
| 814 |
|
|
struct sockaddr_in6 *sin6 = NULL;
|
| 815 |
|
|
struct ip6_pktopts opt, *stickyopt = NULL;
|
| 816 |
|
|
#endif /* INET6 */
|
| 817 |
|
|
int pcbflags = 0;
|
| 818 |
|
|
|
| 819 |
|
|
va_start(ap, m);
|
| 820 |
|
|
inp = va_arg(ap, struct inpcb *);
|
| 821 |
|
|
addr = va_arg(ap, struct mbuf *);
|
| 822 |
|
|
control = va_arg(ap, struct mbuf *);
|
| 823 |
|
|
va_end(ap);
|
| 824 |
|
|
|
| 825 |
|
|
#ifdef INET6
|
| 826 |
|
|
v6packet = ((inp->inp_flags & INP_IPV6) &&
|
| 827 |
|
|
!(inp->inp_flags & INP_IPV6_MAPPED));
|
| 828 |
|
|
#endif
|
| 829 |
|
|
|
| 830 |
|
|
#ifdef INET6
|
| 831 |
|
|
stickyopt = inp->inp_outputopts6;
|
| 832 |
|
|
if (control && v6packet) {
|
| 833 |
|
|
error = ip6_setpktoptions(control, &opt,
|
| 834 |
|
|
((inp->inp_socket->so_state & SS_PRIV) != 0));
|
| 835 |
|
|
if (error != 0)
|
| 836 |
|
|
goto release;
|
| 837 |
|
|
inp->inp_outputopts6 = &opt;
|
| 838 |
|
|
}
|
| 839 |
|
|
#endif
|
| 840 |
|
|
|
| 841 |
|
|
if (addr) {
|
| 842 |
|
|
#ifdef INET6
|
| 843 |
|
|
sin6 = mtod(addr, struct sockaddr_in6 *);
|
| 844 |
|
|
#endif
|
| 845 |
|
|
|
| 846 |
|
|
/*
|
| 847 |
|
|
* Save current PCB flags because they may change during
|
| 848 |
|
|
* temporary connection, particularly the INP_IPV6_UNDEC
|
| 849 |
|
|
* flag.
|
| 850 |
|
|
*/
|
| 851 |
|
|
pcbflags = inp->inp_flags;
|
| 852 |
|
|
|
| 853 |
|
|
#ifdef INET6
|
| 854 |
|
|
if (inp->inp_flags & INP_IPV6)
|
| 855 |
|
|
laddr6 = inp->inp_laddr6;
|
| 856 |
|
|
else
|
| 857 |
|
|
#endif /* INET6 */
|
| 858 |
|
|
laddr = inp->inp_laddr;
|
| 859 |
|
|
#ifdef INET6
|
| 860 |
|
|
if (((inp->inp_flags & INP_IPV6) &&
|
| 861 |
|
|
!IN6_IS_ADDR_UNSPECIFIED(&inp->inp_faddr6)) ||
|
| 862 |
|
|
(inp->inp_faddr.s_addr != INADDR_ANY))
|
| 863 |
|
|
#else /* INET6 */
|
| 864 |
|
|
if (inp->inp_faddr.s_addr != INADDR_ANY)
|
| 865 |
|
|
#endif /* INET6 */
|
| 866 |
|
|
{
|
| 867 |
|
|
error = EISCONN;
|
| 868 |
|
|
goto release;
|
| 869 |
|
|
}
|
| 870 |
|
|
/*
|
| 871 |
|
|
* Must block input while temporarily connected.
|
| 872 |
|
|
*/
|
| 873 |
|
|
s = splsoftnet();
|
| 874 |
|
|
error = in_pcbconnect(inp, addr);
|
| 875 |
|
|
if (error) {
|
| 876 |
|
|
splx(s);
|
| 877 |
|
|
goto release;
|
| 878 |
|
|
}
|
| 879 |
|
|
} else {
|
| 880 |
|
|
#ifdef INET6
|
| 881 |
|
|
if (((inp->inp_flags & INP_IPV6) &&
|
| 882 |
|
|
IN6_IS_ADDR_UNSPECIFIED(&inp->inp_faddr6)) ||
|
| 883 |
|
|
(inp->inp_faddr.s_addr == INADDR_ANY))
|
| 884 |
|
|
#else /* INET6 */
|
| 885 |
|
|
if (inp->inp_faddr.s_addr == INADDR_ANY)
|
| 886 |
|
|
#endif /* INET6 */
|
| 887 |
|
|
{
|
| 888 |
|
|
error = ENOTCONN;
|
| 889 |
|
|
goto release;
|
| 890 |
|
|
}
|
| 891 |
|
|
}
|
| 892 |
|
|
/*
|
| 893 |
|
|
* Calculate data length and get a mbuf
|
| 894 |
|
|
* for UDP and IP headers.
|
| 895 |
|
|
*/
|
| 896 |
|
|
#ifdef INET6
|
| 897 |
|
|
/*
|
| 898 |
|
|
* Handles IPv4-mapped IPv6 address because temporary connect sets
|
| 899 |
|
|
* the right flag.
|
| 900 |
|
|
*/
|
| 901 |
|
|
M_PREPEND(m, v6packet ? (sizeof(struct udphdr) +
|
| 902 |
|
|
sizeof(struct ip6_hdr)) : sizeof(struct udpiphdr), M_DONTWAIT);
|
| 903 |
|
|
#else /* INET6 */
|
| 904 |
|
|
M_PREPEND(m, sizeof(struct udpiphdr), M_DONTWAIT);
|
| 905 |
|
|
#endif /* INET6 */
|
| 906 |
|
|
if (m == 0) {
|
| 907 |
|
|
error = ENOBUFS;
|
| 908 |
|
|
goto bail;
|
| 909 |
|
|
}
|
| 910 |
|
|
|
| 911 |
|
|
/*
|
| 912 |
|
|
* Compute the packet length of the IP header, and
|
| 913 |
|
|
* punt if the length looks bogus.
|
| 914 |
|
|
*/
|
| 915 |
|
|
if ((len + sizeof(struct udpiphdr)) > IP_MAXPACKET) {
|
| 916 |
|
|
error = EMSGSIZE;
|
| 917 |
|
|
goto release;
|
| 918 |
|
|
}
|
| 919 |
|
|
|
| 920 |
|
|
/*
|
| 921 |
|
|
* Fill in mbuf with extended UDP header
|
| 922 |
|
|
* and addresses and length put into network format.
|
| 923 |
|
|
*/
|
| 924 |
|
|
#ifdef INET6
|
| 925 |
|
|
if (v6packet) {
|
| 926 |
|
|
struct ip6_hdr *ipv6 = mtod(m, struct ip6_hdr *);
|
| 927 |
|
|
struct udphdr *uh = (struct udphdr *)(mtod(m, caddr_t) +
|
| 928 |
|
|
sizeof(struct ip6_hdr));
|
| 929 |
|
|
int payload = sizeof(struct ip6_hdr);
|
| 930 |
|
|
struct in6_addr *faddr;
|
| 931 |
|
|
struct in6_addr *laddr;
|
| 932 |
|
|
struct ifnet *oifp = NULL;
|
| 933 |
|
|
|
| 934 |
|
|
ipv6->ip6_flow = htonl(0x60000000) |
|
| 935 |
|
|
(inp->inp_ipv6.ip6_flow & htonl(0x0fffffff));
|
| 936 |
|
|
|
| 937 |
|
|
ipv6->ip6_nxt = IPPROTO_UDP;
|
| 938 |
|
|
ipv6->ip6_dst = inp->inp_faddr6;
|
| 939 |
|
|
/*
|
| 940 |
|
|
* If the scope of the destination is link-local,
|
| 941 |
|
|
* embed the interface
|
| 942 |
|
|
* index in the address.
|
| 943 |
|
|
*
|
| 944 |
|
|
* XXX advanced-api value overrides sin6_scope_id
|
| 945 |
|
|
*/
|
| 946 |
|
|
faddr = &ipv6->ip6_dst;
|
| 947 |
|
|
if (IN6_IS_ADDR_LINKLOCAL(faddr) ||
|
| 948 |
|
|
IN6_IS_ADDR_MC_LINKLOCAL(faddr)) {
|
| 949 |
|
|
struct ip6_pktopts *optp = inp->inp_outputopts6;
|
| 950 |
|
|
struct in6_pktinfo *pi = NULL;
|
| 951 |
|
|
struct ip6_moptions *mopt = NULL;
|
| 952 |
|
|
|
| 953 |
|
|
/*
|
| 954 |
|
|
* XXX Boundary check is assumed to be already done in
|
| 955 |
|
|
* ip6_setpktoptions().
|
| 956 |
|
|
*/
|
| 957 |
|
|
if (optp && (pi = optp->ip6po_pktinfo) &&
|
| 958 |
|
|
pi->ipi6_ifindex) {
|
| 959 |
|
|
faddr->s6_addr16[1] = htons(pi->ipi6_ifindex);
|
| 960 |
|
|
oifp = ifindex2ifnet[pi->ipi6_ifindex];
|
| 961 |
|
|
}
|
| 962 |
|
|
else if (IN6_IS_ADDR_MULTICAST(faddr) &&
|
| 963 |
|
|
(mopt = inp->inp_moptions6) &&
|
| 964 |
|
|
mopt->im6o_multicast_ifp) {
|
| 965 |
|
|
oifp = mopt->im6o_multicast_ifp;
|
| 966 |
|
|
faddr->s6_addr16[1] = oifp->if_index;
|
| 967 |
|
|
} else if (sin6 && sin6->sin6_scope_id) {
|
| 968 |
|
|
/* boundary check */
|
| 969 |
|
|
if (sin6->sin6_scope_id < 0
|
| 970 |
|
|
|| if_index < sin6->sin6_scope_id) {
|
| 971 |
|
|
error = ENXIO; /* XXX EINVAL? */
|
| 972 |
|
|
goto release;
|
| 973 |
|
|
}
|
| 974 |
|
|
/* XXX */
|
| 975 |
|
|
faddr->s6_addr16[1] =
|
| 976 |
|
|
htons(sin6->sin6_scope_id & 0xffff);
|
| 977 |
|
|
}
|
| 978 |
|
|
}
|
| 979 |
|
|
ipv6->ip6_hlim = in6_selecthlim(inp, oifp);
|
| 980 |
|
|
if (sin6) { /*XXX*/
|
| 981 |
|
|
laddr = in6_selectsrc(sin6, inp->inp_outputopts6,
|
| 982 |
|
|
inp->inp_moptions6,
|
| 983 |
|
|
&inp->inp_route6,
|
| 984 |
|
|
&inp->inp_laddr6, &error);
|
| 985 |
|
|
if (laddr == NULL) {
|
| 986 |
|
|
if (error == 0)
|
| 987 |
|
|
error = EADDRNOTAVAIL;
|
| 988 |
|
|
goto release;
|
| 989 |
|
|
}
|
| 990 |
|
|
} else
|
| 991 |
|
|
laddr = &inp->inp_laddr6;
|
| 992 |
|
|
|
| 993 |
|
|
ipv6->ip6_src = *laddr;
|
| 994 |
|
|
|
| 995 |
|
|
ipv6->ip6_plen = (u_short)len + sizeof(struct udphdr);
|
| 996 |
|
|
|
| 997 |
|
|
uh->uh_sport = inp->inp_lport;
|
| 998 |
|
|
uh->uh_dport = inp->inp_fport;
|
| 999 |
|
|
uh->uh_ulen = htons(ipv6->ip6_plen);
|
| 1000 |
|
|
uh->uh_sum = 0;
|
| 1001 |
|
|
|
| 1002 |
|
|
/*
|
| 1003 |
|
|
* Always calculate udp checksum for IPv6 datagrams
|
| 1004 |
|
|
*/
|
| 1005 |
|
|
if (!(uh->uh_sum = in6_cksum(m, IPPROTO_UDP,
|
| 1006 |
|
|
payload, len + sizeof(struct udphdr))))
|
| 1007 |
|
|
uh->uh_sum = 0xffff;
|
| 1008 |
|
|
|
| 1009 |
|
|
error = ip6_output(m, inp->inp_outputopts6, &inp->inp_route6,
|
| 1010 |
|
|
inp->inp_socket->so_options & SO_DONTROUTE,
|
| 1011 |
|
|
(inp->inp_flags & INP_IPV6_MCAST)?inp->inp_moptions6:NULL,
|
| 1012 |
|
|
NULL);
|
| 1013 |
|
|
} else
|
| 1014 |
|
|
#endif /* INET6 */
|
| 1015 |
|
|
{
|
| 1016 |
|
|
ui = mtod(m, struct udpiphdr *);
|
| 1017 |
|
|
bzero(ui->ui_x1, sizeof ui->ui_x1);
|
| 1018 |
|
|
ui->ui_pr = IPPROTO_UDP;
|
| 1019 |
|
|
ui->ui_len = htons((u_int16_t)len + sizeof (struct udphdr));
|
| 1020 |
|
|
ui->ui_src = inp->inp_laddr;
|
| 1021 |
|
|
ui->ui_dst = inp->inp_faddr;
|
| 1022 |
|
|
ui->ui_sport = inp->inp_lport;
|
| 1023 |
|
|
ui->ui_dport = inp->inp_fport;
|
| 1024 |
|
|
ui->ui_ulen = ui->ui_len;
|
| 1025 |
|
|
|
| 1026 |
|
|
/*
|
| 1027 |
|
|
* Stuff checksum and output datagram.
|
| 1028 |
|
|
*/
|
| 1029 |
|
|
|
| 1030 |
|
|
ui->ui_sum = 0;
|
| 1031 |
|
|
if (udpcksum) {
|
| 1032 |
|
|
if ((ui->ui_sum = in_cksum(m, sizeof (struct udpiphdr) +
|
| 1033 |
|
|
len)) == 0)
|
| 1034 |
|
|
ui->ui_sum = 0xffff;
|
| 1035 |
|
|
}
|
| 1036 |
|
|
((struct ip *)ui)->ip_len = sizeof (struct udpiphdr) + len;
|
| 1037 |
|
|
#ifdef INET6
|
| 1038 |
|
|
/*
|
| 1039 |
|
|
* For now, we use the default values for ttl and tos for
|
| 1040 |
|
|
* v4 packets sent using a v6 pcb. We probably want to
|
| 1041 |
|
|
* later allow v4 setsockopt operations on a v6 socket to
|
| 1042 |
|
|
* modify the ttl and tos for v4 packets sent using
|
| 1043 |
|
|
* the mapped address format. We really ought to
|
| 1044 |
|
|
* save the v4 ttl and v6 hoplimit in separate places
|
| 1045 |
|
|
* instead of craming both in the inp_hu union.
|
| 1046 |
|
|
*/
|
| 1047 |
|
|
if (inp->inp_flags & INP_IPV6) {
|
| 1048 |
|
|
((struct ip *)ui)->ip_ttl = ip_defttl;
|
| 1049 |
|
|
((struct ip *)ui)->ip_tos = 0;
|
| 1050 |
|
|
} else
|
| 1051 |
|
|
#endif /* INET6 */
|
| 1052 |
|
|
{
|
| 1053 |
|
|
((struct ip *)ui)->ip_ttl = inp->inp_ip.ip_ttl;
|
| 1054 |
|
|
((struct ip *)ui)->ip_tos = inp->inp_ip.ip_tos;
|
| 1055 |
|
|
}
|
| 1056 |
|
|
|
| 1057 |
|
|
udpstat.udps_opackets++;
|
| 1058 |
|
|
#ifdef INET6
|
| 1059 |
|
|
if (inp->inp_flags & INP_IPV6_MCAST) {
|
| 1060 |
|
|
error = ip_output(m, inp->inp_options, &inp->inp_route,
|
| 1061 |
|
|
inp->inp_socket->so_options &
|
| 1062 |
|
|
(SO_DONTROUTE | SO_BROADCAST),
|
| 1063 |
|
|
NULL, NULL, inp->inp_socket);
|
| 1064 |
|
|
} else
|
| 1065 |
|
|
#endif /* INET6 */
|
| 1066 |
|
|
{
|
| 1067 |
|
|
error = ip_output(m, inp->inp_options, &inp->inp_route,
|
| 1068 |
|
|
inp->inp_socket->so_options &
|
| 1069 |
|
|
(SO_DONTROUTE | SO_BROADCAST),
|
| 1070 |
|
|
inp->inp_moptions, inp, NULL);
|
| 1071 |
|
|
}
|
| 1072 |
|
|
}
|
| 1073 |
|
|
|
| 1074 |
|
|
bail:
|
| 1075 |
|
|
if (addr) {
|
| 1076 |
|
|
in_pcbdisconnect(inp);
|
| 1077 |
|
|
inp->inp_flags = pcbflags;
|
| 1078 |
|
|
#ifdef INET6
|
| 1079 |
|
|
if (inp->inp_flags & INP_IPV6)
|
| 1080 |
|
|
inp->inp_laddr6 = laddr6;
|
| 1081 |
|
|
else
|
| 1082 |
|
|
#endif
|
| 1083 |
|
|
inp->inp_laddr = laddr;
|
| 1084 |
|
|
splx(s);
|
| 1085 |
|
|
}
|
| 1086 |
|
|
if (control) {
|
| 1087 |
|
|
#ifdef INET6
|
| 1088 |
|
|
if (v6packet)
|
| 1089 |
|
|
inp->inp_outputopts6 = stickyopt;
|
| 1090 |
|
|
#endif
|
| 1091 |
|
|
m_freem(control);
|
| 1092 |
|
|
}
|
| 1093 |
|
|
return (error);
|
| 1094 |
|
|
|
| 1095 |
|
|
release:
|
| 1096 |
|
|
m_freem(m);
|
| 1097 |
|
|
if (control) {
|
| 1098 |
|
|
#ifdef INET6
|
| 1099 |
|
|
if (v6packet)
|
| 1100 |
|
|
inp->inp_outputopts6 = stickyopt;
|
| 1101 |
|
|
#endif
|
| 1102 |
|
|
m_freem(control);
|
| 1103 |
|
|
}
|
| 1104 |
|
|
return (error);
|
| 1105 |
|
|
}
|
| 1106 |
|
|
|
| 1107 |
|
|
u_int udp_sendspace = 9216; /* really max datagram size */
|
| 1108 |
|
|
u_int udp_recvspace = 40 * (1024 + sizeof(struct sockaddr_in));
|
| 1109 |
|
|
/* 40 1K datagrams */
|
| 1110 |
|
|
|
| 1111 |
|
|
#if defined(INET6) && !defined(TCP6)
|
| 1112 |
|
|
/*ARGSUSED*/
|
| 1113 |
|
|
int
|
| 1114 |
|
|
udp6_usrreq(so, req, m, addr, control, p)
|
| 1115 |
|
|
struct socket *so;
|
| 1116 |
|
|
int req;
|
| 1117 |
|
|
struct mbuf *m, *addr, *control;
|
| 1118 |
|
|
struct proc *p;
|
| 1119 |
|
|
{
|
| 1120 |
|
|
return udp_usrreq(so, req, m, addr, control);
|
| 1121 |
|
|
}
|
| 1122 |
|
|
#endif
|
| 1123 |
|
|
|
| 1124 |
|
|
/*ARGSUSED*/
|
| 1125 |
|
|
int
|
| 1126 |
|
|
udp_usrreq(so, req, m, addr, control)
|
| 1127 |
|
|
struct socket *so;
|
| 1128 |
|
|
int req;
|
| 1129 |
|
|
struct mbuf *m, *addr, *control;
|
| 1130 |
|
|
{
|
| 1131 |
|
|
struct inpcb *inp = sotoinpcb(so);
|
| 1132 |
|
|
int error = 0;
|
| 1133 |
|
|
int s;
|
| 1134 |
|
|
|
| 1135 |
|
|
if (req == PRU_CONTROL) {
|
| 1136 |
|
|
#ifdef INET6
|
| 1137 |
|
|
if (inp->inp_flags & INP_IPV6)
|
| 1138 |
|
|
return (in6_control(so, (u_long)m, (caddr_t)addr,
|
| 1139 |
|
|
(struct ifnet *)control, 0));
|
| 1140 |
|
|
else
|
| 1141 |
|
|
#endif /* INET6 */
|
| 1142 |
|
|
return (in_control(so, (u_long)m, (caddr_t)addr,
|
| 1143 |
|
|
(struct ifnet *)control));
|
| 1144 |
|
|
}
|
| 1145 |
|
|
if (inp == NULL && req != PRU_ATTACH) {
|
| 1146 |
|
|
error = EINVAL;
|
| 1147 |
|
|
goto release;
|
| 1148 |
|
|
}
|
| 1149 |
|
|
/*
|
| 1150 |
|
|
* Note: need to block udp_input while changing
|
| 1151 |
|
|
* the udp pcb queue and/or pcb addresses.
|
| 1152 |
|
|
*/
|
| 1153 |
|
|
switch (req) {
|
| 1154 |
|
|
|
| 1155 |
|
|
case PRU_ATTACH:
|
| 1156 |
|
|
if (inp != NULL) {
|
| 1157 |
|
|
error = EINVAL;
|
| 1158 |
|
|
break;
|
| 1159 |
|
|
}
|
| 1160 |
|
|
s = splsoftnet();
|
| 1161 |
|
|
error = in_pcballoc(so, &udbtable);
|
| 1162 |
|
|
splx(s);
|
| 1163 |
|
|
if (error)
|
| 1164 |
|
|
break;
|
| 1165 |
|
|
error = soreserve(so, udp_sendspace, udp_recvspace);
|
| 1166 |
|
|
if (error)
|
| 1167 |
|
|
break;
|
| 1168 |
|
|
#ifdef INET6
|
| 1169 |
|
|
if (((struct inpcb *)so->so_pcb)->inp_flags & INP_IPV6)
|
| 1170 |
|
|
((struct inpcb *) so->so_pcb)->inp_ipv6.ip6_hlim =
|
| 1171 |
|
|
ip6_defhlim;
|
| 1172 |
|
|
else
|
| 1173 |
|
|
#endif /* INET6 */
|
| 1174 |
|
|
((struct inpcb *) so->so_pcb)->inp_ip.ip_ttl = ip_defttl;
|
| 1175 |
|
|
break;
|
| 1176 |
|
|
|
| 1177 |
|
|
case PRU_DETACH:
|
| 1178 |
|
|
udp_detach(inp);
|
| 1179 |
|
|
break;
|
| 1180 |
|
|
|
| 1181 |
|
|
case PRU_BIND:
|
| 1182 |
|
|
s = splsoftnet();
|
| 1183 |
|
|
#ifdef INET6
|
| 1184 |
|
|
if (inp->inp_flags & INP_IPV6)
|
| 1185 |
|
|
error = in6_pcbbind(inp, addr);
|
| 1186 |
|
|
else
|
| 1187 |
|
|
#endif
|
| 1188 |
|
|
error = in_pcbbind(inp, addr);
|
| 1189 |
|
|
splx(s);
|
| 1190 |
|
|
break;
|
| 1191 |
|
|
|
| 1192 |
|
|
case PRU_LISTEN:
|
| 1193 |
|
|
error = EOPNOTSUPP;
|
| 1194 |
|
|
break;
|
| 1195 |
|
|
|
| 1196 |
|
|
case PRU_CONNECT:
|
| 1197 |
|
|
#ifdef INET6
|
| 1198 |
|
|
if (inp->inp_flags & INP_IPV6) {
|
| 1199 |
|
|
if (!IN6_IS_ADDR_UNSPECIFIED(&inp->inp_faddr6)) {
|
| 1200 |
|
|
error = EISCONN;
|
| 1201 |
|
|
break;
|
| 1202 |
|
|
}
|
| 1203 |
|
|
s = splsoftnet();
|
| 1204 |
|
|
error = in6_pcbconnect(inp, addr);
|
| 1205 |
|
|
splx(s);
|
| 1206 |
|
|
} else
|
| 1207 |
|
|
#endif /* INET6 */
|
| 1208 |
|
|
{
|
| 1209 |
|
|
if (inp->inp_faddr.s_addr != INADDR_ANY) {
|
| 1210 |
|
|
error = EISCONN;
|
| 1211 |
|
|
break;
|
| 1212 |
|
|
}
|
| 1213 |
|
|
s = splsoftnet();
|
| 1214 |
|
|
error = in_pcbconnect(inp, addr);
|
| 1215 |
|
|
splx(s);
|
| 1216 |
|
|
}
|
| 1217 |
|
|
|
| 1218 |
|
|
if (error == 0)
|
| 1219 |
|
|
soisconnected(so);
|
| 1220 |
|
|
break;
|
| 1221 |
|
|
|
| 1222 |
|
|
case PRU_CONNECT2:
|
| 1223 |
|
|
error = EOPNOTSUPP;
|
| 1224 |
|
|
break;
|
| 1225 |
|
|
|
| 1226 |
|
|
case PRU_ACCEPT:
|
| 1227 |
|
|
error = EOPNOTSUPP;
|
| 1228 |
|
|
break;
|
| 1229 |
|
|
|
| 1230 |
|
|
case PRU_DISCONNECT:
|
| 1231 |
|
|
#ifdef INET6
|
| 1232 |
|
|
if (inp->inp_flags & INP_IPV6) {
|
| 1233 |
|
|
if (IN6_IS_ADDR_UNSPECIFIED(&inp->inp_faddr6)) {
|
| 1234 |
|
|
error = ENOTCONN;
|
| 1235 |
|
|
break;
|
| 1236 |
|
|
}
|
| 1237 |
|
|
} else
|
| 1238 |
|
|
#endif /* INET6 */
|
| 1239 |
|
|
if (inp->inp_faddr.s_addr == INADDR_ANY) {
|
| 1240 |
|
|
error = ENOTCONN;
|
| 1241 |
|
|
break;
|
| 1242 |
|
|
}
|
| 1243 |
|
|
|
| 1244 |
|
|
s = splsoftnet();
|
| 1245 |
|
|
in_pcbdisconnect(inp);
|
| 1246 |
|
|
#ifdef INET6
|
| 1247 |
|
|
if (inp->inp_flags & INP_IPV6)
|
| 1248 |
|
|
inp->inp_laddr6 = in6addr_any;
|
| 1249 |
|
|
else
|
| 1250 |
|
|
#endif /* INET6 */
|
| 1251 |
|
|
inp->inp_laddr.s_addr = INADDR_ANY;
|
| 1252 |
|
|
|
| 1253 |
|
|
splx(s);
|
| 1254 |
|
|
so->so_state &= ~SS_ISCONNECTED; /* XXX */
|
| 1255 |
|
|
break;
|
| 1256 |
|
|
|
| 1257 |
|
|
case PRU_SHUTDOWN:
|
| 1258 |
|
|
socantsendmore(so);
|
| 1259 |
|
|
break;
|
| 1260 |
|
|
|
| 1261 |
|
|
case PRU_SEND:
|
| 1262 |
|
|
#ifdef IPSEC
|
| 1263 |
|
|
error = check_ipsec_policy(inp,0);
|
| 1264 |
|
|
if (error)
|
| 1265 |
|
|
return (error);
|
| 1266 |
|
|
#endif
|
| 1267 |
|
|
return (udp_output(m, inp, addr, control));
|
| 1268 |
|
|
|
| 1269 |
|
|
case PRU_ABORT:
|
| 1270 |
|
|
soisdisconnected(so);
|
| 1271 |
|
|
udp_detach(inp);
|
| 1272 |
|
|
break;
|
| 1273 |
|
|
|
| 1274 |
|
|
case PRU_SOCKADDR:
|
| 1275 |
|
|
#ifdef INET6
|
| 1276 |
|
|
if (inp->inp_flags & INP_IPV6)
|
| 1277 |
|
|
in6_setsockaddr(inp, addr);
|
| 1278 |
|
|
else
|
| 1279 |
|
|
#endif /* INET6 */
|
| 1280 |
|
|
in_setsockaddr(inp, addr);
|
| 1281 |
|
|
break;
|
| 1282 |
|
|
|
| 1283 |
|
|
case PRU_PEERADDR:
|
| 1284 |
|
|
#ifdef INET6
|
| 1285 |
|
|
if (inp->inp_flags & INP_IPV6)
|
| 1286 |
|
|
in6_setpeeraddr(inp, addr);
|
| 1287 |
|
|
else
|
| 1288 |
|
|
#endif /* INET6 */
|
| 1289 |
|
|
in_setpeeraddr(inp, addr);
|
| 1290 |
|
|
break;
|
| 1291 |
|
|
|
| 1292 |
|
|
case PRU_SENSE:
|
| 1293 |
|
|
/*
|
| 1294 |
|
|
* stat: don't bother with a blocksize.
|
| 1295 |
|
|
*/
|
| 1296 |
|
|
/*
|
| 1297 |
|
|
* Perhaps Path MTU might be returned for a connected
|
| 1298 |
|
|
* UDP socket in this case.
|
| 1299 |
|
|
*/
|
| 1300 |
|
|
return (0);
|
| 1301 |
|
|
|
| 1302 |
|
|
case PRU_SENDOOB:
|
| 1303 |
|
|
case PRU_FASTTIMO:
|
| 1304 |
|
|
case PRU_SLOWTIMO:
|
| 1305 |
|
|
case PRU_PROTORCV:
|
| 1306 |
|
|
case PRU_PROTOSEND:
|
| 1307 |
|
|
error = EOPNOTSUPP;
|
| 1308 |
|
|
break;
|
| 1309 |
|
|
|
| 1310 |
|
|
case PRU_RCVD:
|
| 1311 |
|
|
case PRU_RCVOOB:
|
| 1312 |
|
|
return (EOPNOTSUPP); /* do not free mbuf's */
|
| 1313 |
|
|
|
| 1314 |
|
|
default:
|
| 1315 |
|
|
panic("udp_usrreq");
|
| 1316 |
|
|
}
|
| 1317 |
|
|
|
| 1318 |
|
|
release:
|
| 1319 |
|
|
if (control) {
|
| 1320 |
|
|
#ifdef __ECOS
|
| 1321 |
|
|
diag_printf("udp control data unexpectedly retained\n");
|
| 1322 |
|
|
#else
|
| 1323 |
|
|
printf("udp control data unexpectedly retained\n");
|
| 1324 |
|
|
#endif
|
| 1325 |
|
|
m_freem(control);
|
| 1326 |
|
|
}
|
| 1327 |
|
|
if (m)
|
| 1328 |
|
|
m_freem(m);
|
| 1329 |
|
|
return (error);
|
| 1330 |
|
|
}
|
| 1331 |
|
|
|
| 1332 |
|
|
static void
|
| 1333 |
|
|
udp_detach(inp)
|
| 1334 |
|
|
struct inpcb *inp;
|
| 1335 |
|
|
{
|
| 1336 |
|
|
int s = splsoftnet();
|
| 1337 |
|
|
|
| 1338 |
|
|
in_pcbdetach(inp);
|
| 1339 |
|
|
splx(s);
|
| 1340 |
|
|
}
|
| 1341 |
|
|
|
| 1342 |
|
|
#ifdef CYGPKG_NET_SYSCTL
|
| 1343 |
|
|
/*
|
| 1344 |
|
|
* Sysctl for udp variables.
|
| 1345 |
|
|
*/
|
| 1346 |
|
|
int
|
| 1347 |
|
|
udp_sysctl(name, namelen, oldp, oldlenp, newp, newlen)
|
| 1348 |
|
|
int *name;
|
| 1349 |
|
|
u_int namelen;
|
| 1350 |
|
|
void *oldp;
|
| 1351 |
|
|
size_t *oldlenp;
|
| 1352 |
|
|
void *newp;
|
| 1353 |
|
|
size_t newlen;
|
| 1354 |
|
|
{
|
| 1355 |
|
|
/* All sysctl names at this level are terminal. */
|
| 1356 |
|
|
if (namelen != 1)
|
| 1357 |
|
|
return (ENOTDIR);
|
| 1358 |
|
|
|
| 1359 |
|
|
switch (name[0]) {
|
| 1360 |
|
|
case UDPCTL_CHECKSUM:
|
| 1361 |
|
|
return (sysctl_int(oldp, oldlenp, newp, newlen, &udpcksum));
|
| 1362 |
|
|
case UDPCTL_BADDYNAMIC:
|
| 1363 |
|
|
return (sysctl_struct(oldp, oldlenp, newp, newlen,
|
| 1364 |
|
|
baddynamicports.udp, sizeof(baddynamicports.udp)));
|
| 1365 |
|
|
case UDPCTL_RECVSPACE:
|
| 1366 |
|
|
return (sysctl_int(oldp, oldlenp, newp, newlen,&udp_recvspace));
|
| 1367 |
|
|
case UDPCTL_SENDSPACE:
|
| 1368 |
|
|
return (sysctl_int(oldp, oldlenp, newp, newlen,&udp_sendspace));
|
| 1369 |
|
|
default:
|
| 1370 |
|
|
return (ENOPROTOOPT);
|
| 1371 |
|
|
}
|
| 1372 |
|
|
/* NOTREACHED */
|
| 1373 |
|
|
}
|
| 1374 |
|
|
#endif // CYGPKG_NET_SYSCTL
|
