1686cdd19SJun-ichiro itojun Hagino /* $FreeBSD$ */ 233841545SHajimu UMEMOTO /* $KAME: in6_pcb.c,v 1.31 2001/05/21 05:45:10 jinmei Exp $ */ 3686cdd19SJun-ichiro itojun Hagino 482cd038dSYoshinobu Inoue /* 582cd038dSYoshinobu Inoue * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 682cd038dSYoshinobu Inoue * All rights reserved. 782cd038dSYoshinobu Inoue * 882cd038dSYoshinobu Inoue * Redistribution and use in source and binary forms, with or without 982cd038dSYoshinobu Inoue * modification, are permitted provided that the following conditions 1082cd038dSYoshinobu Inoue * are met: 1182cd038dSYoshinobu Inoue * 1. Redistributions of source code must retain the above copyright 1282cd038dSYoshinobu Inoue * notice, this list of conditions and the following disclaimer. 1382cd038dSYoshinobu Inoue * 2. Redistributions in binary form must reproduce the above copyright 1482cd038dSYoshinobu Inoue * notice, this list of conditions and the following disclaimer in the 1582cd038dSYoshinobu Inoue * documentation and/or other materials provided with the distribution. 1682cd038dSYoshinobu Inoue * 3. Neither the name of the project nor the names of its contributors 1782cd038dSYoshinobu Inoue * may be used to endorse or promote products derived from this software 1882cd038dSYoshinobu Inoue * without specific prior written permission. 1982cd038dSYoshinobu Inoue * 2082cd038dSYoshinobu Inoue * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 2182cd038dSYoshinobu Inoue * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2282cd038dSYoshinobu Inoue * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2382cd038dSYoshinobu Inoue * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 2482cd038dSYoshinobu Inoue * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2582cd038dSYoshinobu Inoue * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2682cd038dSYoshinobu Inoue * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2782cd038dSYoshinobu Inoue * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2882cd038dSYoshinobu Inoue * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2982cd038dSYoshinobu Inoue * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3082cd038dSYoshinobu Inoue * SUCH DAMAGE. 3182cd038dSYoshinobu Inoue * 3282cd038dSYoshinobu Inoue */ 3382cd038dSYoshinobu Inoue 3482cd038dSYoshinobu Inoue /* 3582cd038dSYoshinobu Inoue * Copyright (c) 1982, 1986, 1991, 1993 3682cd038dSYoshinobu Inoue * The Regents of the University of California. All rights reserved. 3782cd038dSYoshinobu Inoue * 3882cd038dSYoshinobu Inoue * Redistribution and use in source and binary forms, with or without 3982cd038dSYoshinobu Inoue * modification, are permitted provided that the following conditions 4082cd038dSYoshinobu Inoue * are met: 4182cd038dSYoshinobu Inoue * 1. Redistributions of source code must retain the above copyright 4282cd038dSYoshinobu Inoue * notice, this list of conditions and the following disclaimer. 4382cd038dSYoshinobu Inoue * 2. Redistributions in binary form must reproduce the above copyright 4482cd038dSYoshinobu Inoue * notice, this list of conditions and the following disclaimer in the 4582cd038dSYoshinobu Inoue * documentation and/or other materials provided with the distribution. 4682cd038dSYoshinobu Inoue * 3. All advertising materials mentioning features or use of this software 4782cd038dSYoshinobu Inoue * must display the following acknowledgement: 4882cd038dSYoshinobu Inoue * This product includes software developed by the University of 4982cd038dSYoshinobu Inoue * California, Berkeley and its contributors. 5082cd038dSYoshinobu Inoue * 4. Neither the name of the University nor the names of its contributors 5182cd038dSYoshinobu Inoue * may be used to endorse or promote products derived from this software 5282cd038dSYoshinobu Inoue * without specific prior written permission. 5382cd038dSYoshinobu Inoue * 5482cd038dSYoshinobu Inoue * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 5582cd038dSYoshinobu Inoue * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 5682cd038dSYoshinobu Inoue * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 5782cd038dSYoshinobu Inoue * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 5882cd038dSYoshinobu Inoue * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 5982cd038dSYoshinobu Inoue * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 6082cd038dSYoshinobu Inoue * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 6182cd038dSYoshinobu Inoue * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 6282cd038dSYoshinobu Inoue * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 6382cd038dSYoshinobu Inoue * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 6482cd038dSYoshinobu Inoue * SUCH DAMAGE. 6582cd038dSYoshinobu Inoue * 6682cd038dSYoshinobu Inoue * @(#)in_pcb.c 8.2 (Berkeley) 1/4/94 6782cd038dSYoshinobu Inoue */ 6882cd038dSYoshinobu Inoue 6933841545SHajimu UMEMOTO #include "opt_inet.h" 7033841545SHajimu UMEMOTO #include "opt_inet6.h" 716a800098SYoshinobu Inoue #include "opt_ipsec.h" 72b79274baSHajimu UMEMOTO #include "opt_random_ip_id.h" 7382cd038dSYoshinobu Inoue 7482cd038dSYoshinobu Inoue #include <sys/param.h> 7582cd038dSYoshinobu Inoue #include <sys/systm.h> 7682cd038dSYoshinobu Inoue #include <sys/malloc.h> 7782cd038dSYoshinobu Inoue #include <sys/mbuf.h> 78fb59c426SYoshinobu Inoue #include <sys/domain.h> 7982cd038dSYoshinobu Inoue #include <sys/protosw.h> 8082cd038dSYoshinobu Inoue #include <sys/socket.h> 8182cd038dSYoshinobu Inoue #include <sys/socketvar.h> 8282cd038dSYoshinobu Inoue #include <sys/sockio.h> 8382cd038dSYoshinobu Inoue #include <sys/errno.h> 8482cd038dSYoshinobu Inoue #include <sys/time.h> 8582cd038dSYoshinobu Inoue #include <sys/proc.h> 8682cd038dSYoshinobu Inoue #include <sys/jail.h> 8782cd038dSYoshinobu Inoue 8894540027SJeff Roberson #include <vm/uma.h> 8982cd038dSYoshinobu Inoue 9082cd038dSYoshinobu Inoue #include <net/if.h> 9182cd038dSYoshinobu Inoue #include <net/if_types.h> 9282cd038dSYoshinobu Inoue #include <net/route.h> 9382cd038dSYoshinobu Inoue 9482cd038dSYoshinobu Inoue #include <netinet/in.h> 9582cd038dSYoshinobu Inoue #include <netinet/in_var.h> 9682cd038dSYoshinobu Inoue #include <netinet/in_systm.h> 97f76fcf6dSJeffrey Hsu #include <netinet/tcp_var.h> 98686cdd19SJun-ichiro itojun Hagino #include <netinet/ip6.h> 99fb59c426SYoshinobu Inoue #include <netinet/ip_var.h> 10082cd038dSYoshinobu Inoue #include <netinet6/ip6_var.h> 10182cd038dSYoshinobu Inoue #include <netinet6/nd6.h> 10282cd038dSYoshinobu Inoue #include <netinet/in_pcb.h> 10382cd038dSYoshinobu Inoue #include <netinet6/in6_pcb.h> 10482cd038dSYoshinobu Inoue 10582cd038dSYoshinobu Inoue #ifdef IPSEC 10682cd038dSYoshinobu Inoue #include <netinet6/ipsec.h> 10733841545SHajimu UMEMOTO #ifdef INET6 10882cd038dSYoshinobu Inoue #include <netinet6/ipsec6.h> 10933841545SHajimu UMEMOTO #endif 11033841545SHajimu UMEMOTO #include <netinet6/ah.h> 11133841545SHajimu UMEMOTO #ifdef INET6 1126a800098SYoshinobu Inoue #include <netinet6/ah6.h> 11333841545SHajimu UMEMOTO #endif 11482cd038dSYoshinobu Inoue #include <netkey/key.h> 11582cd038dSYoshinobu Inoue #endif /* IPSEC */ 11682cd038dSYoshinobu Inoue 117b9234fafSSam Leffler #ifdef FAST_IPSEC 118b9234fafSSam Leffler #include <netipsec/ipsec.h> 119b9234fafSSam Leffler #include <netipsec/ipsec6.h> 120b9234fafSSam Leffler #include <netipsec/key.h> 121b9234fafSSam Leffler #define IPSEC 122b9234fafSSam Leffler #endif /* FAST_IPSEC */ 123b9234fafSSam Leffler 12482cd038dSYoshinobu Inoue struct in6_addr zeroin6_addr; 12582cd038dSYoshinobu Inoue 12682cd038dSYoshinobu Inoue int 127b40ce416SJulian Elischer in6_pcbbind(inp, nam, td) 12882cd038dSYoshinobu Inoue register struct inpcb *inp; 12982cd038dSYoshinobu Inoue struct sockaddr *nam; 130b40ce416SJulian Elischer struct thread *td; 13182cd038dSYoshinobu Inoue { 13282cd038dSYoshinobu Inoue struct socket *so = inp->inp_socket; 13382cd038dSYoshinobu Inoue struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)NULL; 13482cd038dSYoshinobu Inoue struct inpcbinfo *pcbinfo = inp->inp_pcbinfo; 13582cd038dSYoshinobu Inoue u_short lport = 0; 1364cc20ab1SSeigo Tanimura int wild = 0, reuseport = (so->so_options & SO_REUSEPORT); 13782cd038dSYoshinobu Inoue 13882cd038dSYoshinobu Inoue if (!in6_ifaddr) /* XXX broken! */ 13982cd038dSYoshinobu Inoue return (EADDRNOTAVAIL); 14082cd038dSYoshinobu Inoue if (inp->inp_lport || !IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) 14182cd038dSYoshinobu Inoue return(EINVAL); 14282cd038dSYoshinobu Inoue if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT)) == 0) 14382cd038dSYoshinobu Inoue wild = 1; 14482cd038dSYoshinobu Inoue if (nam) { 14582cd038dSYoshinobu Inoue sin6 = (struct sockaddr_in6 *)nam; 14682cd038dSYoshinobu Inoue if (nam->sa_len != sizeof(*sin6)) 14782cd038dSYoshinobu Inoue return(EINVAL); 14882cd038dSYoshinobu Inoue /* 14982cd038dSYoshinobu Inoue * family check. 15082cd038dSYoshinobu Inoue */ 15182cd038dSYoshinobu Inoue if (nam->sa_family != AF_INET6) 15282cd038dSYoshinobu Inoue return(EAFNOSUPPORT); 15382cd038dSYoshinobu Inoue 154686cdd19SJun-ichiro itojun Hagino /* KAME hack: embed scopeid */ 155686cdd19SJun-ichiro itojun Hagino if (in6_embedscope(&sin6->sin6_addr, sin6, inp, NULL) != 0) 156686cdd19SJun-ichiro itojun Hagino return EINVAL; 15782cd038dSYoshinobu Inoue /* this must be cleared for ifa_ifwithaddr() */ 15882cd038dSYoshinobu Inoue sin6->sin6_scope_id = 0; 15982cd038dSYoshinobu Inoue 16082cd038dSYoshinobu Inoue lport = sin6->sin6_port; 16182cd038dSYoshinobu Inoue if (IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) { 16282cd038dSYoshinobu Inoue /* 16382cd038dSYoshinobu Inoue * Treat SO_REUSEADDR as SO_REUSEPORT for multicast; 16482cd038dSYoshinobu Inoue * allow compepte duplication of binding if 16582cd038dSYoshinobu Inoue * SO_REUSEPORT is set, or if SO_REUSEADDR is set 16682cd038dSYoshinobu Inoue * and a multicast address is bound on both 16782cd038dSYoshinobu Inoue * new and duplicated sockets. 16882cd038dSYoshinobu Inoue */ 16982cd038dSYoshinobu Inoue if (so->so_options & SO_REUSEADDR) 17082cd038dSYoshinobu Inoue reuseport = SO_REUSEADDR|SO_REUSEPORT; 17182cd038dSYoshinobu Inoue } else if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 17282cd038dSYoshinobu Inoue struct ifaddr *ia = NULL; 17382cd038dSYoshinobu Inoue 17482cd038dSYoshinobu Inoue sin6->sin6_port = 0; /* yech... */ 17582cd038dSYoshinobu Inoue if ((ia = ifa_ifwithaddr((struct sockaddr *)sin6)) == 0) 17682cd038dSYoshinobu Inoue return(EADDRNOTAVAIL); 17782cd038dSYoshinobu Inoue 17882cd038dSYoshinobu Inoue /* 17982cd038dSYoshinobu Inoue * XXX: bind to an anycast address might accidentally 18082cd038dSYoshinobu Inoue * cause sending a packet with anycast source address. 18133841545SHajimu UMEMOTO * We should allow to bind to a deprecated address, since 18233841545SHajimu UMEMOTO * the application dare to use it. 18382cd038dSYoshinobu Inoue */ 18482cd038dSYoshinobu Inoue if (ia && 18582cd038dSYoshinobu Inoue ((struct in6_ifaddr *)ia)->ia6_flags & 18633841545SHajimu UMEMOTO (IN6_IFF_ANYCAST|IN6_IFF_NOTREADY|IN6_IFF_DETACHED)) { 18782cd038dSYoshinobu Inoue return(EADDRNOTAVAIL); 18882cd038dSYoshinobu Inoue } 18982cd038dSYoshinobu Inoue } 19082cd038dSYoshinobu Inoue if (lport) { 19182cd038dSYoshinobu Inoue struct inpcb *t; 19282cd038dSYoshinobu Inoue 19382cd038dSYoshinobu Inoue /* GROSS */ 194b40ce416SJulian Elischer if (ntohs(lport) < IPV6PORT_RESERVED && td && 19544731cabSJohn Baldwin suser_cred(td->td_ucred, PRISON_ROOT)) 19682cd038dSYoshinobu Inoue return(EACCES); 19782cd038dSYoshinobu Inoue if (so->so_cred->cr_uid != 0 && 19882cd038dSYoshinobu Inoue !IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) { 199fb59c426SYoshinobu Inoue t = in6_pcblookup_local(pcbinfo, 20082cd038dSYoshinobu Inoue &sin6->sin6_addr, lport, 20182cd038dSYoshinobu Inoue INPLOOKUP_WILDCARD); 20256e6821eSOlivier Houchard if (t && (t->inp_vflag & INP_TIMEWAIT)) { 20356e6821eSOlivier Houchard if ((!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) || 20456e6821eSOlivier Houchard !IN6_IS_ADDR_UNSPECIFIED(&t->in6p_laddr) || 20556e6821eSOlivier Houchard !(intotw(t)->tw_so_options & SO_REUSEPORT)) 20656e6821eSOlivier Houchard && so->so_cred->cr_uid != 20756e6821eSOlivier Houchard intotw(t)->tw_cred->cr_uid) 20856e6821eSOlivier Houchard return (EADDRINUSE); 20956e6821eSOlivier Houchard } else if (t && 2104cc20ab1SSeigo Tanimura (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) || 21182cd038dSYoshinobu Inoue !IN6_IS_ADDR_UNSPECIFIED(&t->in6p_laddr) || 21256e6821eSOlivier Houchard (t->inp_socket->so_options & SO_REUSEPORT) 21356e6821eSOlivier Houchard == 0) && (so->so_cred->cr_uid != 2144cc20ab1SSeigo Tanimura t->inp_socket->so_cred->cr_uid)) 21582cd038dSYoshinobu Inoue return (EADDRINUSE); 21633841545SHajimu UMEMOTO if ((inp->inp_flags & IN6P_IPV6_V6ONLY) == 0 && 217fb59c426SYoshinobu Inoue IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 218fb59c426SYoshinobu Inoue struct sockaddr_in sin; 219fb59c426SYoshinobu Inoue 220fb59c426SYoshinobu Inoue in6_sin6_2_sin(&sin, sin6); 221fb59c426SYoshinobu Inoue t = in_pcblookup_local(pcbinfo, 222fb59c426SYoshinobu Inoue sin.sin_addr, lport, 223fb59c426SYoshinobu Inoue INPLOOKUP_WILDCARD); 22456e6821eSOlivier Houchard if (t && (t->inp_vflag & INP_TIMEWAIT)) { 22556e6821eSOlivier Houchard if (so->so_cred->cr_uid != 22656e6821eSOlivier Houchard intotw(t)->tw_cred->cr_uid && 22756e6821eSOlivier Houchard (ntohl(t->inp_laddr.s_addr) != 22856e6821eSOlivier Houchard INADDR_ANY || 22956e6821eSOlivier Houchard ((inp->inp_vflag & 23056e6821eSOlivier Houchard INP_IPV6PROTO) == 23156e6821eSOlivier Houchard (t->inp_vflag & 23256e6821eSOlivier Houchard INP_IPV6PROTO)))) 23356e6821eSOlivier Houchard return (EADDRINUSE); 23456e6821eSOlivier Houchard } else if (t && 235fb59c426SYoshinobu Inoue (so->so_cred->cr_uid != 236fb59c426SYoshinobu Inoue t->inp_socket->so_cred->cr_uid) && 237fb59c426SYoshinobu Inoue (ntohl(t->inp_laddr.s_addr) != 238fb59c426SYoshinobu Inoue INADDR_ANY || 239fb59c426SYoshinobu Inoue INP_SOCKAF(so) == 240fb59c426SYoshinobu Inoue INP_SOCKAF(t->inp_socket))) 241fb59c426SYoshinobu Inoue return (EADDRINUSE); 242fb59c426SYoshinobu Inoue } 24382cd038dSYoshinobu Inoue } 24482cd038dSYoshinobu Inoue t = in6_pcblookup_local(pcbinfo, &sin6->sin6_addr, 24582cd038dSYoshinobu Inoue lport, wild); 24656e6821eSOlivier Houchard if (t && (reuseport & ((t->inp_vflag & INP_TIMEWAIT) ? 24756e6821eSOlivier Houchard intotw(t)->tw_so_options : 24856e6821eSOlivier Houchard t->inp_socket->so_options)) == 0) 24982cd038dSYoshinobu Inoue return(EADDRINUSE); 25033841545SHajimu UMEMOTO if ((inp->inp_flags & IN6P_IPV6_V6ONLY) == 0 && 251fb59c426SYoshinobu Inoue IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 252fb59c426SYoshinobu Inoue struct sockaddr_in sin; 253fb59c426SYoshinobu Inoue 254fb59c426SYoshinobu Inoue in6_sin6_2_sin(&sin, sin6); 255fb59c426SYoshinobu Inoue t = in_pcblookup_local(pcbinfo, sin.sin_addr, 256fb59c426SYoshinobu Inoue lport, wild); 25756e6821eSOlivier Houchard if (t && t->inp_vflag & INP_TIMEWAIT) { 25856e6821eSOlivier Houchard if ((reuseport & 25956e6821eSOlivier Houchard intotw(t)->tw_so_options) == 0 && 26056e6821eSOlivier Houchard (ntohl(t->inp_laddr.s_addr) != 26156e6821eSOlivier Houchard INADDR_ANY || ((inp->inp_vflag & 26256e6821eSOlivier Houchard INP_IPV6PROTO) == 26356e6821eSOlivier Houchard (t->inp_vflag & INP_IPV6PROTO)))) 26456e6821eSOlivier Houchard return (EADDRINUSE); 26556e6821eSOlivier Houchard } 26656e6821eSOlivier Houchard else if (t && 2674cc20ab1SSeigo Tanimura (reuseport & t->inp_socket->so_options) 26856e6821eSOlivier Houchard == 0 && (ntohl(t->inp_laddr.s_addr) != 26956e6821eSOlivier Houchard INADDR_ANY || INP_SOCKAF(so) == 2704cc20ab1SSeigo Tanimura INP_SOCKAF(t->inp_socket))) 271fb59c426SYoshinobu Inoue return (EADDRINUSE); 272fb59c426SYoshinobu Inoue } 27382cd038dSYoshinobu Inoue } 27482cd038dSYoshinobu Inoue inp->in6p_laddr = sin6->sin6_addr; 27582cd038dSYoshinobu Inoue } 27682cd038dSYoshinobu Inoue if (lport == 0) { 277686cdd19SJun-ichiro itojun Hagino int e; 278b40ce416SJulian Elischer if ((e = in6_pcbsetport(&inp->in6p_laddr, inp, td)) != 0) 279686cdd19SJun-ichiro itojun Hagino return(e); 28082cd038dSYoshinobu Inoue } 281686cdd19SJun-ichiro itojun Hagino else { 28282cd038dSYoshinobu Inoue inp->inp_lport = lport; 28382cd038dSYoshinobu Inoue if (in_pcbinshash(inp) != 0) { 28482cd038dSYoshinobu Inoue inp->in6p_laddr = in6addr_any; 28582cd038dSYoshinobu Inoue inp->inp_lport = 0; 28682cd038dSYoshinobu Inoue return (EAGAIN); 28782cd038dSYoshinobu Inoue } 288686cdd19SJun-ichiro itojun Hagino } 28982cd038dSYoshinobu Inoue return(0); 29082cd038dSYoshinobu Inoue } 29182cd038dSYoshinobu Inoue 29282cd038dSYoshinobu Inoue /* 29382cd038dSYoshinobu Inoue * Transform old in6_pcbconnect() into an inner subroutine for new 29482cd038dSYoshinobu Inoue * in6_pcbconnect(): Do some validity-checking on the remote 29582cd038dSYoshinobu Inoue * address (in mbuf 'nam') and then determine local host address 29682cd038dSYoshinobu Inoue * (i.e., which interface) to use to access that remote host. 29782cd038dSYoshinobu Inoue * 29882cd038dSYoshinobu Inoue * This preserves definition of in6_pcbconnect(), while supporting a 29982cd038dSYoshinobu Inoue * slightly different version for T/TCP. (This is more than 30082cd038dSYoshinobu Inoue * a bit of a kludge, but cleaning up the internal interfaces would 30182cd038dSYoshinobu Inoue * have forced minor changes in every protocol). 30282cd038dSYoshinobu Inoue */ 30382cd038dSYoshinobu Inoue 30482cd038dSYoshinobu Inoue int 30582cd038dSYoshinobu Inoue in6_pcbladdr(inp, nam, plocal_addr6) 30682cd038dSYoshinobu Inoue register struct inpcb *inp; 30782cd038dSYoshinobu Inoue struct sockaddr *nam; 30882cd038dSYoshinobu Inoue struct in6_addr **plocal_addr6; 30982cd038dSYoshinobu Inoue { 31082cd038dSYoshinobu Inoue register struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam; 31182cd038dSYoshinobu Inoue struct ifnet *ifp = NULL; 31282cd038dSYoshinobu Inoue int error = 0; 31382cd038dSYoshinobu Inoue 31482cd038dSYoshinobu Inoue if (nam->sa_len != sizeof (*sin6)) 31582cd038dSYoshinobu Inoue return (EINVAL); 31682cd038dSYoshinobu Inoue if (sin6->sin6_family != AF_INET6) 31782cd038dSYoshinobu Inoue return (EAFNOSUPPORT); 31882cd038dSYoshinobu Inoue if (sin6->sin6_port == 0) 31982cd038dSYoshinobu Inoue return (EADDRNOTAVAIL); 32082cd038dSYoshinobu Inoue 321686cdd19SJun-ichiro itojun Hagino /* KAME hack: embed scopeid */ 322686cdd19SJun-ichiro itojun Hagino if (in6_embedscope(&sin6->sin6_addr, sin6, inp, &ifp) != 0) 323686cdd19SJun-ichiro itojun Hagino return EINVAL; 32482cd038dSYoshinobu Inoue 32582cd038dSYoshinobu Inoue if (in6_ifaddr) { 32682cd038dSYoshinobu Inoue /* 32782cd038dSYoshinobu Inoue * If the destination address is UNSPECIFIED addr, 32882cd038dSYoshinobu Inoue * use the loopback addr, e.g ::1. 32982cd038dSYoshinobu Inoue */ 33082cd038dSYoshinobu Inoue if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) 33182cd038dSYoshinobu Inoue sin6->sin6_addr = in6addr_loopback; 33282cd038dSYoshinobu Inoue } 33382cd038dSYoshinobu Inoue { 33482cd038dSYoshinobu Inoue /* 33582cd038dSYoshinobu Inoue * XXX: in6_selectsrc might replace the bound local address 33682cd038dSYoshinobu Inoue * with the address specified by setsockopt(IPV6_PKTINFO). 33782cd038dSYoshinobu Inoue * Is it the intended behavior? 33882cd038dSYoshinobu Inoue */ 33982cd038dSYoshinobu Inoue *plocal_addr6 = in6_selectsrc(sin6, inp->in6p_outputopts, 34082cd038dSYoshinobu Inoue inp->in6p_moptions, 34182cd038dSYoshinobu Inoue &inp->in6p_route, 34282cd038dSYoshinobu Inoue &inp->in6p_laddr, &error); 34382cd038dSYoshinobu Inoue if (*plocal_addr6 == 0) { 34482cd038dSYoshinobu Inoue if (error == 0) 34582cd038dSYoshinobu Inoue error = EADDRNOTAVAIL; 34682cd038dSYoshinobu Inoue return(error); 34782cd038dSYoshinobu Inoue } 34882cd038dSYoshinobu Inoue /* 34982cd038dSYoshinobu Inoue * Don't do pcblookup call here; return interface in 35082cd038dSYoshinobu Inoue * plocal_addr6 35182cd038dSYoshinobu Inoue * and exit to caller, that will do the lookup. 35282cd038dSYoshinobu Inoue */ 35382cd038dSYoshinobu Inoue } 35482cd038dSYoshinobu Inoue 35582cd038dSYoshinobu Inoue if (inp->in6p_route.ro_rt) 35682cd038dSYoshinobu Inoue ifp = inp->in6p_route.ro_rt->rt_ifp; 35782cd038dSYoshinobu Inoue 35882cd038dSYoshinobu Inoue return(0); 35982cd038dSYoshinobu Inoue } 36082cd038dSYoshinobu Inoue 36182cd038dSYoshinobu Inoue /* 36282cd038dSYoshinobu Inoue * Outer subroutine: 36382cd038dSYoshinobu Inoue * Connect from a socket to a specified address. 36482cd038dSYoshinobu Inoue * Both address and port must be specified in argument sin. 36582cd038dSYoshinobu Inoue * If don't have a local address for this socket yet, 36682cd038dSYoshinobu Inoue * then pick one. 36782cd038dSYoshinobu Inoue */ 36882cd038dSYoshinobu Inoue int 369b40ce416SJulian Elischer in6_pcbconnect(inp, nam, td) 37082cd038dSYoshinobu Inoue register struct inpcb *inp; 37182cd038dSYoshinobu Inoue struct sockaddr *nam; 372b40ce416SJulian Elischer struct thread *td; 37382cd038dSYoshinobu Inoue { 37482cd038dSYoshinobu Inoue struct in6_addr *addr6; 37582cd038dSYoshinobu Inoue register struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam; 37682cd038dSYoshinobu Inoue int error; 37782cd038dSYoshinobu Inoue 37882cd038dSYoshinobu Inoue /* 37982cd038dSYoshinobu Inoue * Call inner routine, to assign local interface address. 38088ff5695SSUZUKI Shinsuke * in6_pcbladdr() may automatically fill in sin6_scope_id. 38182cd038dSYoshinobu Inoue */ 38282cd038dSYoshinobu Inoue if ((error = in6_pcbladdr(inp, nam, &addr6)) != 0) 38382cd038dSYoshinobu Inoue return(error); 38482cd038dSYoshinobu Inoue 38582cd038dSYoshinobu Inoue if (in6_pcblookup_hash(inp->inp_pcbinfo, &sin6->sin6_addr, 38682cd038dSYoshinobu Inoue sin6->sin6_port, 38782cd038dSYoshinobu Inoue IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr) 38882cd038dSYoshinobu Inoue ? addr6 : &inp->in6p_laddr, 38982cd038dSYoshinobu Inoue inp->inp_lport, 0, NULL) != NULL) { 39082cd038dSYoshinobu Inoue return (EADDRINUSE); 39182cd038dSYoshinobu Inoue } 39282cd038dSYoshinobu Inoue if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) { 39382cd038dSYoshinobu Inoue if (inp->inp_lport == 0) { 394b40ce416SJulian Elischer error = in6_pcbbind(inp, (struct sockaddr *)0, td); 39582cd038dSYoshinobu Inoue if (error) 39682cd038dSYoshinobu Inoue return (error); 39782cd038dSYoshinobu Inoue } 39882cd038dSYoshinobu Inoue inp->in6p_laddr = *addr6; 39982cd038dSYoshinobu Inoue } 40082cd038dSYoshinobu Inoue inp->in6p_faddr = sin6->sin6_addr; 40182cd038dSYoshinobu Inoue inp->inp_fport = sin6->sin6_port; 40233841545SHajimu UMEMOTO /* update flowinfo - draft-itojun-ipv6-flowlabel-api-00 */ 40333841545SHajimu UMEMOTO inp->in6p_flowinfo &= ~IPV6_FLOWLABEL_MASK; 40433841545SHajimu UMEMOTO if (inp->in6p_flags & IN6P_AUTOFLOWLABEL) 405fb59c426SYoshinobu Inoue inp->in6p_flowinfo |= 406b79274baSHajimu UMEMOTO #ifdef RANDOM_IP_ID 407b79274baSHajimu UMEMOTO (htonl(ip6_randomflowlabel()) & IPV6_FLOWLABEL_MASK); 408b79274baSHajimu UMEMOTO #else 409fb59c426SYoshinobu Inoue (htonl(ip6_flow_seq++) & IPV6_FLOWLABEL_MASK); 410b79274baSHajimu UMEMOTO #endif 41182cd038dSYoshinobu Inoue 41282cd038dSYoshinobu Inoue in_pcbrehash(inp); 41382cd038dSYoshinobu Inoue return (0); 41482cd038dSYoshinobu Inoue } 41582cd038dSYoshinobu Inoue 416686cdd19SJun-ichiro itojun Hagino #if 0 41782cd038dSYoshinobu Inoue /* 41882cd038dSYoshinobu Inoue * Return an IPv6 address, which is the most appropriate for given 41982cd038dSYoshinobu Inoue * destination and user specified options. 42082cd038dSYoshinobu Inoue * If necessary, this function lookups the routing table and return 42182cd038dSYoshinobu Inoue * an entry to the caller for later use. 42282cd038dSYoshinobu Inoue */ 42382cd038dSYoshinobu Inoue struct in6_addr * 42482cd038dSYoshinobu Inoue in6_selectsrc(dstsock, opts, mopts, ro, laddr, errorp) 42582cd038dSYoshinobu Inoue struct sockaddr_in6 *dstsock; 42682cd038dSYoshinobu Inoue struct ip6_pktopts *opts; 42782cd038dSYoshinobu Inoue struct ip6_moptions *mopts; 42882cd038dSYoshinobu Inoue struct route_in6 *ro; 42982cd038dSYoshinobu Inoue struct in6_addr *laddr; 43082cd038dSYoshinobu Inoue int *errorp; 43182cd038dSYoshinobu Inoue { 43282cd038dSYoshinobu Inoue struct in6_addr *dst; 43382cd038dSYoshinobu Inoue struct in6_ifaddr *ia6 = 0; 43482cd038dSYoshinobu Inoue struct in6_pktinfo *pi = NULL; 43582cd038dSYoshinobu Inoue 43682cd038dSYoshinobu Inoue dst = &dstsock->sin6_addr; 43782cd038dSYoshinobu Inoue *errorp = 0; 43882cd038dSYoshinobu Inoue 43982cd038dSYoshinobu Inoue /* 44082cd038dSYoshinobu Inoue * If the source address is explicitly specified by the caller, 44182cd038dSYoshinobu Inoue * use it. 44282cd038dSYoshinobu Inoue */ 44382cd038dSYoshinobu Inoue if (opts && (pi = opts->ip6po_pktinfo) && 44482cd038dSYoshinobu Inoue !IN6_IS_ADDR_UNSPECIFIED(&pi->ipi6_addr)) 44582cd038dSYoshinobu Inoue return(&pi->ipi6_addr); 44682cd038dSYoshinobu Inoue 44782cd038dSYoshinobu Inoue /* 44882cd038dSYoshinobu Inoue * If the source address is not specified but the socket(if any) 44982cd038dSYoshinobu Inoue * is already bound, use the bound address. 45082cd038dSYoshinobu Inoue */ 45182cd038dSYoshinobu Inoue if (laddr && !IN6_IS_ADDR_UNSPECIFIED(laddr)) 45282cd038dSYoshinobu Inoue return(laddr); 45382cd038dSYoshinobu Inoue 45482cd038dSYoshinobu Inoue /* 45582cd038dSYoshinobu Inoue * If the caller doesn't specify the source address but 45682cd038dSYoshinobu Inoue * the outgoing interface, use an address associated with 45782cd038dSYoshinobu Inoue * the interface. 45882cd038dSYoshinobu Inoue */ 45982cd038dSYoshinobu Inoue if (pi && pi->ipi6_ifindex) { 46082cd038dSYoshinobu Inoue /* XXX boundary check is assumed to be already done. */ 461f9132cebSJonathan Lemon ia6 = in6_ifawithscope(ifnet_byindex(pi->ipi6_ifindex), dst); 46282cd038dSYoshinobu Inoue if (ia6 == 0) { 46382cd038dSYoshinobu Inoue *errorp = EADDRNOTAVAIL; 46482cd038dSYoshinobu Inoue return(0); 46582cd038dSYoshinobu Inoue } 46682cd038dSYoshinobu Inoue return(&satosin6(&ia6->ia_addr)->sin6_addr); 46782cd038dSYoshinobu Inoue } 46882cd038dSYoshinobu Inoue 46982cd038dSYoshinobu Inoue /* 47082cd038dSYoshinobu Inoue * If the destination address is a link-local unicast address or 47182cd038dSYoshinobu Inoue * a multicast address, and if the outgoing interface is specified 47282cd038dSYoshinobu Inoue * by the sin6_scope_id filed, use an address associated with the 47382cd038dSYoshinobu Inoue * interface. 47482cd038dSYoshinobu Inoue * XXX: We're now trying to define more specific semantics of 47582cd038dSYoshinobu Inoue * sin6_scope_id field, so this part will be rewritten in 47682cd038dSYoshinobu Inoue * the near future. 47782cd038dSYoshinobu Inoue */ 47882cd038dSYoshinobu Inoue if ((IN6_IS_ADDR_LINKLOCAL(dst) || IN6_IS_ADDR_MULTICAST(dst)) && 47982cd038dSYoshinobu Inoue dstsock->sin6_scope_id) { 48082cd038dSYoshinobu Inoue /* 48182cd038dSYoshinobu Inoue * I'm not sure if boundary check for scope_id is done 48282cd038dSYoshinobu Inoue * somewhere... 48382cd038dSYoshinobu Inoue */ 48482cd038dSYoshinobu Inoue if (dstsock->sin6_scope_id < 0 || 48582cd038dSYoshinobu Inoue if_index < dstsock->sin6_scope_id) { 48682cd038dSYoshinobu Inoue *errorp = ENXIO; /* XXX: better error? */ 48782cd038dSYoshinobu Inoue return(0); 48882cd038dSYoshinobu Inoue } 489f9132cebSJonathan Lemon ia6 = in6_ifawithscope(ifnet_byindex(dstsock->sin6_scope_id), 49082cd038dSYoshinobu Inoue dst); 49182cd038dSYoshinobu Inoue if (ia6 == 0) { 49282cd038dSYoshinobu Inoue *errorp = EADDRNOTAVAIL; 49382cd038dSYoshinobu Inoue return(0); 49482cd038dSYoshinobu Inoue } 49582cd038dSYoshinobu Inoue return(&satosin6(&ia6->ia_addr)->sin6_addr); 49682cd038dSYoshinobu Inoue } 49782cd038dSYoshinobu Inoue 49882cd038dSYoshinobu Inoue /* 49982cd038dSYoshinobu Inoue * If the destination address is a multicast address and 50082cd038dSYoshinobu Inoue * the outgoing interface for the address is specified 50182cd038dSYoshinobu Inoue * by the caller, use an address associated with the interface. 50282cd038dSYoshinobu Inoue * There is a sanity check here; if the destination has node-local 50382cd038dSYoshinobu Inoue * scope, the outgoing interfacde should be a loopback address. 50482cd038dSYoshinobu Inoue * Even if the outgoing interface is not specified, we also 50582cd038dSYoshinobu Inoue * choose a loopback interface as the outgoing interface. 50682cd038dSYoshinobu Inoue */ 50782cd038dSYoshinobu Inoue if (IN6_IS_ADDR_MULTICAST(dst)) { 50882cd038dSYoshinobu Inoue struct ifnet *ifp = mopts ? mopts->im6o_multicast_ifp : NULL; 50982cd038dSYoshinobu Inoue 51082cd038dSYoshinobu Inoue if (ifp == NULL && IN6_IS_ADDR_MC_NODELOCAL(dst)) { 51182cd038dSYoshinobu Inoue ifp = &loif[0]; 51282cd038dSYoshinobu Inoue } 51382cd038dSYoshinobu Inoue 51482cd038dSYoshinobu Inoue if (ifp) { 51582cd038dSYoshinobu Inoue ia6 = in6_ifawithscope(ifp, dst); 51682cd038dSYoshinobu Inoue if (ia6 == 0) { 51782cd038dSYoshinobu Inoue *errorp = EADDRNOTAVAIL; 51882cd038dSYoshinobu Inoue return(0); 51982cd038dSYoshinobu Inoue } 52082cd038dSYoshinobu Inoue return(&ia6->ia_addr.sin6_addr); 52182cd038dSYoshinobu Inoue } 52282cd038dSYoshinobu Inoue } 52382cd038dSYoshinobu Inoue 52482cd038dSYoshinobu Inoue /* 52582cd038dSYoshinobu Inoue * If the next hop address for the packet is specified 52682cd038dSYoshinobu Inoue * by caller, use an address associated with the route 52782cd038dSYoshinobu Inoue * to the next hop. 52882cd038dSYoshinobu Inoue */ 52982cd038dSYoshinobu Inoue { 53082cd038dSYoshinobu Inoue struct sockaddr_in6 *sin6_next; 53182cd038dSYoshinobu Inoue struct rtentry *rt; 53282cd038dSYoshinobu Inoue 53382cd038dSYoshinobu Inoue if (opts && opts->ip6po_nexthop) { 53482cd038dSYoshinobu Inoue sin6_next = satosin6(opts->ip6po_nexthop); 53582cd038dSYoshinobu Inoue rt = nd6_lookup(&sin6_next->sin6_addr, 1, NULL); 53682cd038dSYoshinobu Inoue if (rt) { 53782cd038dSYoshinobu Inoue ia6 = in6_ifawithscope(rt->rt_ifp, dst); 53882cd038dSYoshinobu Inoue if (ia6 == 0) 53982cd038dSYoshinobu Inoue ia6 = ifatoia6(rt->rt_ifa); 54082cd038dSYoshinobu Inoue } 54182cd038dSYoshinobu Inoue if (ia6 == 0) { 54282cd038dSYoshinobu Inoue *errorp = EADDRNOTAVAIL; 54382cd038dSYoshinobu Inoue return(0); 54482cd038dSYoshinobu Inoue } 54582cd038dSYoshinobu Inoue return(&satosin6(&ia6->ia_addr)->sin6_addr); 54682cd038dSYoshinobu Inoue } 54782cd038dSYoshinobu Inoue } 54882cd038dSYoshinobu Inoue 54982cd038dSYoshinobu Inoue /* 55082cd038dSYoshinobu Inoue * If route is known or can be allocated now, 55182cd038dSYoshinobu Inoue * our src addr is taken from the i/f, else punt. 55282cd038dSYoshinobu Inoue */ 55382cd038dSYoshinobu Inoue if (ro) { 55482cd038dSYoshinobu Inoue if (ro->ro_rt && 55582cd038dSYoshinobu Inoue !IN6_ARE_ADDR_EQUAL(&satosin6(&ro->ro_dst)->sin6_addr, dst)) { 55682cd038dSYoshinobu Inoue RTFREE(ro->ro_rt); 55782cd038dSYoshinobu Inoue ro->ro_rt = (struct rtentry *)0; 55882cd038dSYoshinobu Inoue } 55982cd038dSYoshinobu Inoue if (ro->ro_rt == (struct rtentry *)0 || 56082cd038dSYoshinobu Inoue ro->ro_rt->rt_ifp == (struct ifnet *)0) { 56133841545SHajimu UMEMOTO struct sockaddr_in6 *dst6; 56233841545SHajimu UMEMOTO 56382cd038dSYoshinobu Inoue /* No route yet, so try to acquire one */ 56482cd038dSYoshinobu Inoue bzero(&ro->ro_dst, sizeof(struct sockaddr_in6)); 56533841545SHajimu UMEMOTO dst6 = (struct sockaddr_in6 *)&ro->ro_dst; 56633841545SHajimu UMEMOTO dst6->sin6_family = AF_INET6; 56733841545SHajimu UMEMOTO dst6->sin6_len = sizeof(struct sockaddr_in6); 56833841545SHajimu UMEMOTO dst6->sin6_addr = *dst; 56982cd038dSYoshinobu Inoue if (IN6_IS_ADDR_MULTICAST(dst)) { 57082cd038dSYoshinobu Inoue ro->ro_rt = rtalloc1(&((struct route *)ro) 57182cd038dSYoshinobu Inoue ->ro_dst, 0, 0UL); 57282cd038dSYoshinobu Inoue } else { 573ae5bcbffSYoshinobu Inoue rtalloc((struct route *)ro); 57482cd038dSYoshinobu Inoue } 57582cd038dSYoshinobu Inoue } 57682cd038dSYoshinobu Inoue 57782cd038dSYoshinobu Inoue /* 57882cd038dSYoshinobu Inoue * in_pcbconnect() checks out IFF_LOOPBACK to skip using 57982cd038dSYoshinobu Inoue * the address. But we don't know why it does so. 58082cd038dSYoshinobu Inoue * It is necessary to ensure the scope even for lo0 58182cd038dSYoshinobu Inoue * so doesn't check out IFF_LOOPBACK. 58282cd038dSYoshinobu Inoue */ 58382cd038dSYoshinobu Inoue 58482cd038dSYoshinobu Inoue if (ro->ro_rt) { 58582cd038dSYoshinobu Inoue ia6 = in6_ifawithscope(ro->ro_rt->rt_ifa->ifa_ifp, dst); 58682cd038dSYoshinobu Inoue if (ia6 == 0) /* xxx scope error ?*/ 58782cd038dSYoshinobu Inoue ia6 = ifatoia6(ro->ro_rt->rt_ifa); 58882cd038dSYoshinobu Inoue } 58982cd038dSYoshinobu Inoue if (ia6 == 0) { 59082cd038dSYoshinobu Inoue *errorp = EHOSTUNREACH; /* no route */ 59182cd038dSYoshinobu Inoue return(0); 59282cd038dSYoshinobu Inoue } 59382cd038dSYoshinobu Inoue return(&satosin6(&ia6->ia_addr)->sin6_addr); 59482cd038dSYoshinobu Inoue } 59582cd038dSYoshinobu Inoue 59682cd038dSYoshinobu Inoue *errorp = EADDRNOTAVAIL; 59782cd038dSYoshinobu Inoue return(0); 59882cd038dSYoshinobu Inoue } 59982cd038dSYoshinobu Inoue 60082cd038dSYoshinobu Inoue /* 60182cd038dSYoshinobu Inoue * Default hop limit selection. The precedence is as follows: 60282cd038dSYoshinobu Inoue * 1. Hoplimit valued specified via ioctl. 60382cd038dSYoshinobu Inoue * 2. (If the outgoing interface is detected) the current 60482cd038dSYoshinobu Inoue * hop limit of the interface specified by router advertisement. 60582cd038dSYoshinobu Inoue * 3. The system default hoplimit. 60682cd038dSYoshinobu Inoue */ 60782cd038dSYoshinobu Inoue int 60882cd038dSYoshinobu Inoue in6_selecthlim(in6p, ifp) 60982cd038dSYoshinobu Inoue struct in6pcb *in6p; 61082cd038dSYoshinobu Inoue struct ifnet *ifp; 61182cd038dSYoshinobu Inoue { 61282cd038dSYoshinobu Inoue if (in6p && in6p->in6p_hops >= 0) 61382cd038dSYoshinobu Inoue return(in6p->in6p_hops); 61482cd038dSYoshinobu Inoue else if (ifp) 61582cd038dSYoshinobu Inoue return(nd_ifinfo[ifp->if_index].chlim); 61682cd038dSYoshinobu Inoue else 61782cd038dSYoshinobu Inoue return(ip6_defhlim); 61882cd038dSYoshinobu Inoue } 619686cdd19SJun-ichiro itojun Hagino #endif 62082cd038dSYoshinobu Inoue 62182cd038dSYoshinobu Inoue void 62282cd038dSYoshinobu Inoue in6_pcbdisconnect(inp) 62382cd038dSYoshinobu Inoue struct inpcb *inp; 62482cd038dSYoshinobu Inoue { 62582cd038dSYoshinobu Inoue bzero((caddr_t)&inp->in6p_faddr, sizeof(inp->in6p_faddr)); 62682cd038dSYoshinobu Inoue inp->inp_fport = 0; 62733841545SHajimu UMEMOTO /* clear flowinfo - draft-itojun-ipv6-flowlabel-api-00 */ 62833841545SHajimu UMEMOTO inp->in6p_flowinfo &= ~IPV6_FLOWLABEL_MASK; 62982cd038dSYoshinobu Inoue in_pcbrehash(inp); 6304cc20ab1SSeigo Tanimura if (inp->inp_socket->so_state & SS_NOFDREF) 63182cd038dSYoshinobu Inoue in6_pcbdetach(inp); 63282cd038dSYoshinobu Inoue } 63382cd038dSYoshinobu Inoue 63482cd038dSYoshinobu Inoue void 63582cd038dSYoshinobu Inoue in6_pcbdetach(inp) 63682cd038dSYoshinobu Inoue struct inpcb *inp; 63782cd038dSYoshinobu Inoue { 63882cd038dSYoshinobu Inoue struct socket *so = inp->inp_socket; 63982cd038dSYoshinobu Inoue struct inpcbinfo *ipi = inp->inp_pcbinfo; 64082cd038dSYoshinobu Inoue 64182cd038dSYoshinobu Inoue #ifdef IPSEC 642333aa64dSBrian Feldman if (inp->in6p_sp != NULL) 64382cd038dSYoshinobu Inoue ipsec6_delete_pcbpolicy(inp); 64482cd038dSYoshinobu Inoue #endif /* IPSEC */ 64582cd038dSYoshinobu Inoue inp->inp_gencnt = ++ipi->ipi_gencnt; 64682cd038dSYoshinobu Inoue in_pcbremlists(inp); 647340c35deSJonathan Lemon if (so) { 648340c35deSJonathan Lemon so->so_pcb = NULL; 649b1e4abd2SMatthew Dillon sotryfree(so); 650340c35deSJonathan Lemon } 65182cd038dSYoshinobu Inoue if (inp->in6p_options) 65282cd038dSYoshinobu Inoue m_freem(inp->in6p_options); 65333841545SHajimu UMEMOTO ip6_freepcbopts(inp->in6p_outputopts); 65433841545SHajimu UMEMOTO ip6_freemoptions(inp->in6p_moptions); 65582cd038dSYoshinobu Inoue if (inp->in6p_route.ro_rt) 65682cd038dSYoshinobu Inoue rtfree(inp->in6p_route.ro_rt); 657fb59c426SYoshinobu Inoue /* Check and free IPv4 related resources in case of mapped addr */ 658fb59c426SYoshinobu Inoue if (inp->inp_options) 659fb59c426SYoshinobu Inoue (void)m_free(inp->inp_options); 660fb59c426SYoshinobu Inoue ip_freemoptions(inp->inp_moptions); 66182cd038dSYoshinobu Inoue inp->inp_vflag = 0; 662bdc20552SJeffrey Hsu INP_LOCK_DESTROY(inp); 66394540027SJeff Roberson uma_zfree(ipi->ipi_zone, inp); 66482cd038dSYoshinobu Inoue } 66582cd038dSYoshinobu Inoue 66626ef6ac4SDon Lewis struct sockaddr * 66726ef6ac4SDon Lewis in6_sockaddr(port, addr_p) 66826ef6ac4SDon Lewis in_port_t port; 66926ef6ac4SDon Lewis struct in6_addr *addr_p; 67026ef6ac4SDon Lewis { 67126ef6ac4SDon Lewis struct sockaddr_in6 *sin6; 67226ef6ac4SDon Lewis 673a163d034SWarner Losh MALLOC(sin6, struct sockaddr_in6 *, sizeof *sin6, M_SONAME, M_WAITOK); 67426ef6ac4SDon Lewis bzero(sin6, sizeof *sin6); 67526ef6ac4SDon Lewis sin6->sin6_family = AF_INET6; 67626ef6ac4SDon Lewis sin6->sin6_len = sizeof(*sin6); 67726ef6ac4SDon Lewis sin6->sin6_port = port; 67826ef6ac4SDon Lewis sin6->sin6_addr = *addr_p; 67926ef6ac4SDon Lewis if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) 68026ef6ac4SDon Lewis sin6->sin6_scope_id = ntohs(sin6->sin6_addr.s6_addr16[1]); 68126ef6ac4SDon Lewis else 68226ef6ac4SDon Lewis sin6->sin6_scope_id = 0; /*XXX*/ 68326ef6ac4SDon Lewis if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) 68426ef6ac4SDon Lewis sin6->sin6_addr.s6_addr16[1] = 0; 68526ef6ac4SDon Lewis 68626ef6ac4SDon Lewis return (struct sockaddr *)sin6; 68726ef6ac4SDon Lewis } 68826ef6ac4SDon Lewis 68926ef6ac4SDon Lewis struct sockaddr * 69026ef6ac4SDon Lewis in6_v4mapsin6_sockaddr(port, addr_p) 69126ef6ac4SDon Lewis in_port_t port; 69226ef6ac4SDon Lewis struct in_addr *addr_p; 69326ef6ac4SDon Lewis { 69426ef6ac4SDon Lewis struct sockaddr_in sin; 69526ef6ac4SDon Lewis struct sockaddr_in6 *sin6_p; 69626ef6ac4SDon Lewis 69726ef6ac4SDon Lewis bzero(&sin, sizeof sin); 69826ef6ac4SDon Lewis sin.sin_family = AF_INET; 69926ef6ac4SDon Lewis sin.sin_len = sizeof(sin); 70026ef6ac4SDon Lewis sin.sin_port = port; 70126ef6ac4SDon Lewis sin.sin_addr = *addr_p; 70226ef6ac4SDon Lewis 70326ef6ac4SDon Lewis MALLOC(sin6_p, struct sockaddr_in6 *, sizeof *sin6_p, M_SONAME, 704a163d034SWarner Losh M_WAITOK); 70526ef6ac4SDon Lewis in6_sin_2_v4mapsin6(&sin, sin6_p); 70626ef6ac4SDon Lewis 70726ef6ac4SDon Lewis return (struct sockaddr *)sin6_p; 70826ef6ac4SDon Lewis } 70926ef6ac4SDon Lewis 71082cd038dSYoshinobu Inoue /* 71182cd038dSYoshinobu Inoue * The calling convention of in6_setsockaddr() and in6_setpeeraddr() was 71282cd038dSYoshinobu Inoue * modified to match the pru_sockaddr() and pru_peeraddr() entry points 71382cd038dSYoshinobu Inoue * in struct pr_usrreqs, so that protocols can just reference then directly 71482cd038dSYoshinobu Inoue * without the need for a wrapper function. The socket must have a valid 71582cd038dSYoshinobu Inoue * (i.e., non-nil) PCB, but it should be impossible to get an invalid one 71682cd038dSYoshinobu Inoue * except through a kernel programming error, so it is acceptable to panic 71782cd038dSYoshinobu Inoue * (or in this case trap) if the PCB is invalid. (Actually, we don't trap 71882cd038dSYoshinobu Inoue * because there actually /is/ a programming error somewhere... XXX) 71982cd038dSYoshinobu Inoue */ 72082cd038dSYoshinobu Inoue int 72182cd038dSYoshinobu Inoue in6_setsockaddr(so, nam) 72282cd038dSYoshinobu Inoue struct socket *so; 72382cd038dSYoshinobu Inoue struct sockaddr **nam; 72482cd038dSYoshinobu Inoue { 72582cd038dSYoshinobu Inoue int s; 72682cd038dSYoshinobu Inoue register struct inpcb *inp; 72726ef6ac4SDon Lewis struct in6_addr addr; 72826ef6ac4SDon Lewis in_port_t port; 72982cd038dSYoshinobu Inoue 73082cd038dSYoshinobu Inoue s = splnet(); 73182cd038dSYoshinobu Inoue inp = sotoinpcb(so); 73282cd038dSYoshinobu Inoue if (!inp) { 73382cd038dSYoshinobu Inoue splx(s); 73482cd038dSYoshinobu Inoue return EINVAL; 73582cd038dSYoshinobu Inoue } 73626ef6ac4SDon Lewis port = inp->inp_lport; 73726ef6ac4SDon Lewis addr = inp->in6p_laddr; 73882cd038dSYoshinobu Inoue splx(s); 73982cd038dSYoshinobu Inoue 74026ef6ac4SDon Lewis *nam = in6_sockaddr(port, &addr); 74182cd038dSYoshinobu Inoue return 0; 74282cd038dSYoshinobu Inoue } 74382cd038dSYoshinobu Inoue 74482cd038dSYoshinobu Inoue int 74582cd038dSYoshinobu Inoue in6_setpeeraddr(so, nam) 74682cd038dSYoshinobu Inoue struct socket *so; 74782cd038dSYoshinobu Inoue struct sockaddr **nam; 74882cd038dSYoshinobu Inoue { 74982cd038dSYoshinobu Inoue int s; 75082cd038dSYoshinobu Inoue struct inpcb *inp; 75126ef6ac4SDon Lewis struct in6_addr addr; 75226ef6ac4SDon Lewis in_port_t port; 75382cd038dSYoshinobu Inoue 75482cd038dSYoshinobu Inoue s = splnet(); 75582cd038dSYoshinobu Inoue inp = sotoinpcb(so); 75682cd038dSYoshinobu Inoue if (!inp) { 75782cd038dSYoshinobu Inoue splx(s); 75882cd038dSYoshinobu Inoue return EINVAL; 75982cd038dSYoshinobu Inoue } 76026ef6ac4SDon Lewis port = inp->inp_fport; 76126ef6ac4SDon Lewis addr = inp->in6p_faddr; 76282cd038dSYoshinobu Inoue splx(s); 76382cd038dSYoshinobu Inoue 76426ef6ac4SDon Lewis *nam = in6_sockaddr(port, &addr); 76582cd038dSYoshinobu Inoue return 0; 76682cd038dSYoshinobu Inoue } 76782cd038dSYoshinobu Inoue 76882cd038dSYoshinobu Inoue int 76982cd038dSYoshinobu Inoue in6_mapped_sockaddr(struct socket *so, struct sockaddr **nam) 77082cd038dSYoshinobu Inoue { 77182cd038dSYoshinobu Inoue struct inpcb *inp = sotoinpcb(so); 77282cd038dSYoshinobu Inoue int error; 77382cd038dSYoshinobu Inoue 77482cd038dSYoshinobu Inoue if (inp == NULL) 77582cd038dSYoshinobu Inoue return EINVAL; 77682cd038dSYoshinobu Inoue if (inp->inp_vflag & INP_IPV4) { 777f76fcf6dSJeffrey Hsu error = in_setsockaddr(so, nam, &tcbinfo); 778369dc8ceSEivind Eklund if (error == 0) 77982cd038dSYoshinobu Inoue in6_sin_2_v4mapsin6_in_sock(nam); 78082cd038dSYoshinobu Inoue } else 78188ff5695SSUZUKI Shinsuke /* scope issues will be handled in in6_setsockaddr(). */ 78282cd038dSYoshinobu Inoue error = in6_setsockaddr(so, nam); 78382cd038dSYoshinobu Inoue 78482cd038dSYoshinobu Inoue return error; 78582cd038dSYoshinobu Inoue } 78682cd038dSYoshinobu Inoue 78782cd038dSYoshinobu Inoue int 78882cd038dSYoshinobu Inoue in6_mapped_peeraddr(struct socket *so, struct sockaddr **nam) 78982cd038dSYoshinobu Inoue { 79082cd038dSYoshinobu Inoue struct inpcb *inp = sotoinpcb(so); 79182cd038dSYoshinobu Inoue int error; 79282cd038dSYoshinobu Inoue 79382cd038dSYoshinobu Inoue if (inp == NULL) 79482cd038dSYoshinobu Inoue return EINVAL; 79582cd038dSYoshinobu Inoue if (inp->inp_vflag & INP_IPV4) { 796f76fcf6dSJeffrey Hsu error = in_setpeeraddr(so, nam, &tcbinfo); 797369dc8ceSEivind Eklund if (error == 0) 79882cd038dSYoshinobu Inoue in6_sin_2_v4mapsin6_in_sock(nam); 79982cd038dSYoshinobu Inoue } else 80088ff5695SSUZUKI Shinsuke /* scope issues will be handled in in6_setpeeraddr(). */ 80182cd038dSYoshinobu Inoue error = in6_setpeeraddr(so, nam); 80282cd038dSYoshinobu Inoue 80382cd038dSYoshinobu Inoue return error; 80482cd038dSYoshinobu Inoue } 80582cd038dSYoshinobu Inoue 80682cd038dSYoshinobu Inoue /* 80782cd038dSYoshinobu Inoue * Pass some notification to all connections of a protocol 80882cd038dSYoshinobu Inoue * associated with address dst. The local address and/or port numbers 80982cd038dSYoshinobu Inoue * may be specified to limit the search. The "usual action" will be 81082cd038dSYoshinobu Inoue * taken, depending on the ctlinput cmd. The caller must filter any 81182cd038dSYoshinobu Inoue * cmds that are uninteresting (e.g., no error in the map). 81282cd038dSYoshinobu Inoue * Call the protocol specific routine (if any) to report 81382cd038dSYoshinobu Inoue * any errors for each matching socket. 81482cd038dSYoshinobu Inoue * 81582cd038dSYoshinobu Inoue * Must be called at splnet. 81682cd038dSYoshinobu Inoue */ 81782cd038dSYoshinobu Inoue void 81833841545SHajimu UMEMOTO in6_pcbnotify(head, dst, fport_arg, src, lport_arg, cmd, notify) 81982cd038dSYoshinobu Inoue struct inpcbhead *head; 820c4c0c592SAlfred Perlstein struct sockaddr *dst; 821c4c0c592SAlfred Perlstein const struct sockaddr *src; 82282cd038dSYoshinobu Inoue u_int fport_arg, lport_arg; 82382cd038dSYoshinobu Inoue int cmd; 8243ce144eaSJeffrey Hsu struct inpcb *(*notify) __P((struct inpcb *, int)); 82582cd038dSYoshinobu Inoue { 826686cdd19SJun-ichiro itojun Hagino struct inpcb *inp, *ninp; 82733841545SHajimu UMEMOTO struct sockaddr_in6 sa6_src, *sa6_dst; 82882cd038dSYoshinobu Inoue u_short fport = fport_arg, lport = lport_arg; 82933841545SHajimu UMEMOTO u_int32_t flowinfo; 83082cd038dSYoshinobu Inoue int errno, s; 83182cd038dSYoshinobu Inoue 83278f94aa9SRuslan Ermilov if ((unsigned)cmd >= PRC_NCMDS || dst->sa_family != AF_INET6) 83382cd038dSYoshinobu Inoue return; 83433841545SHajimu UMEMOTO 83533841545SHajimu UMEMOTO sa6_dst = (struct sockaddr_in6 *)dst; 83633841545SHajimu UMEMOTO if (IN6_IS_ADDR_UNSPECIFIED(&sa6_dst->sin6_addr)) 83782cd038dSYoshinobu Inoue return; 83882cd038dSYoshinobu Inoue 83982cd038dSYoshinobu Inoue /* 84033841545SHajimu UMEMOTO * note that src can be NULL when we get notify by local fragmentation. 84133841545SHajimu UMEMOTO */ 842c4c0c592SAlfred Perlstein sa6_src = (src == NULL) ? sa6_any : *(const struct sockaddr_in6 *)src; 84333841545SHajimu UMEMOTO flowinfo = sa6_src.sin6_flowinfo; 84433841545SHajimu UMEMOTO 84533841545SHajimu UMEMOTO /* 84682cd038dSYoshinobu Inoue * Redirects go to all references to the destination, 847686cdd19SJun-ichiro itojun Hagino * and use in6_rtchange to invalidate the route cache. 848686cdd19SJun-ichiro itojun Hagino * Dead host indications: also use in6_rtchange to invalidate 849686cdd19SJun-ichiro itojun Hagino * the cache, and deliver the error to all the sockets. 85082cd038dSYoshinobu Inoue * Otherwise, if we have knowledge of the local port and address, 85182cd038dSYoshinobu Inoue * deliver only to that socket. 85282cd038dSYoshinobu Inoue */ 85382cd038dSYoshinobu Inoue if (PRC_IS_REDIRECT(cmd) || cmd == PRC_HOSTDEAD) { 85482cd038dSYoshinobu Inoue fport = 0; 85582cd038dSYoshinobu Inoue lport = 0; 85633841545SHajimu UMEMOTO bzero((caddr_t)&sa6_src.sin6_addr, sizeof(sa6_src.sin6_addr)); 857686cdd19SJun-ichiro itojun Hagino 85833841545SHajimu UMEMOTO if (cmd != PRC_HOSTDEAD) 85933841545SHajimu UMEMOTO notify = in6_rtchange; 86082cd038dSYoshinobu Inoue } 86182cd038dSYoshinobu Inoue errno = inet6ctlerrmap[cmd]; 86282cd038dSYoshinobu Inoue s = splnet(); 863686cdd19SJun-ichiro itojun Hagino for (inp = LIST_FIRST(head); inp != NULL; inp = ninp) { 864686cdd19SJun-ichiro itojun Hagino ninp = LIST_NEXT(inp, inp_list); 865686cdd19SJun-ichiro itojun Hagino 86633841545SHajimu UMEMOTO if ((inp->inp_vflag & INP_IPV6) == 0) 86782cd038dSYoshinobu Inoue continue; 868686cdd19SJun-ichiro itojun Hagino 869686cdd19SJun-ichiro itojun Hagino /* 87033841545SHajimu UMEMOTO * Detect if we should notify the error. If no source and 87133841545SHajimu UMEMOTO * destination ports are specifed, but non-zero flowinfo and 87233841545SHajimu UMEMOTO * local address match, notify the error. This is the case 87333841545SHajimu UMEMOTO * when the error is delivered with an encrypted buffer 87433841545SHajimu UMEMOTO * by ESP. Otherwise, just compare addresses and ports 87533841545SHajimu UMEMOTO * as usual. 876686cdd19SJun-ichiro itojun Hagino */ 87733841545SHajimu UMEMOTO if (lport == 0 && fport == 0 && flowinfo && 87833841545SHajimu UMEMOTO inp->inp_socket != NULL && 87933841545SHajimu UMEMOTO flowinfo == (inp->in6p_flowinfo & IPV6_FLOWLABEL_MASK) && 88033841545SHajimu UMEMOTO IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, &sa6_src.sin6_addr)) 88133841545SHajimu UMEMOTO goto do_notify; 88233841545SHajimu UMEMOTO else if (!IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr, 88333841545SHajimu UMEMOTO &sa6_dst->sin6_addr) || 88482cd038dSYoshinobu Inoue inp->inp_socket == 0 || 88582cd038dSYoshinobu Inoue (lport && inp->inp_lport != lport) || 88633841545SHajimu UMEMOTO (!IN6_IS_ADDR_UNSPECIFIED(&sa6_src.sin6_addr) && 88733841545SHajimu UMEMOTO !IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, 88833841545SHajimu UMEMOTO &sa6_src.sin6_addr)) || 889686cdd19SJun-ichiro itojun Hagino (fport && inp->inp_fport != fport)) 89082cd038dSYoshinobu Inoue continue; 891686cdd19SJun-ichiro itojun Hagino 89233841545SHajimu UMEMOTO do_notify: 89382cd038dSYoshinobu Inoue if (notify) 894686cdd19SJun-ichiro itojun Hagino (*notify)(inp, errno); 89582cd038dSYoshinobu Inoue } 89682cd038dSYoshinobu Inoue splx(s); 89782cd038dSYoshinobu Inoue } 89882cd038dSYoshinobu Inoue 89982cd038dSYoshinobu Inoue /* 90082cd038dSYoshinobu Inoue * Lookup a PCB based on the local address and port. 90182cd038dSYoshinobu Inoue */ 90282cd038dSYoshinobu Inoue struct inpcb * 90382cd038dSYoshinobu Inoue in6_pcblookup_local(pcbinfo, laddr, lport_arg, wild_okay) 90482cd038dSYoshinobu Inoue struct inpcbinfo *pcbinfo; 90582cd038dSYoshinobu Inoue struct in6_addr *laddr; 90682cd038dSYoshinobu Inoue u_int lport_arg; 90782cd038dSYoshinobu Inoue int wild_okay; 90882cd038dSYoshinobu Inoue { 90982cd038dSYoshinobu Inoue register struct inpcb *inp; 91082cd038dSYoshinobu Inoue int matchwild = 3, wildcard; 91182cd038dSYoshinobu Inoue u_short lport = lport_arg; 91282cd038dSYoshinobu Inoue 91382cd038dSYoshinobu Inoue if (!wild_okay) { 91482cd038dSYoshinobu Inoue struct inpcbhead *head; 91582cd038dSYoshinobu Inoue /* 91682cd038dSYoshinobu Inoue * Look for an unconnected (wildcard foreign addr) PCB that 91782cd038dSYoshinobu Inoue * matches the local address and port we're looking for. 91882cd038dSYoshinobu Inoue */ 91982cd038dSYoshinobu Inoue head = &pcbinfo->hashbase[INP_PCBHASH(INADDR_ANY, lport, 0, 92082cd038dSYoshinobu Inoue pcbinfo->hashmask)]; 92182cd038dSYoshinobu Inoue LIST_FOREACH(inp, head, inp_hash) { 922369dc8ceSEivind Eklund if ((inp->inp_vflag & INP_IPV6) == 0) 92382cd038dSYoshinobu Inoue continue; 92482cd038dSYoshinobu Inoue if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) && 92582cd038dSYoshinobu Inoue IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr) && 92682cd038dSYoshinobu Inoue inp->inp_lport == lport) { 92782cd038dSYoshinobu Inoue /* 92882cd038dSYoshinobu Inoue * Found. 92982cd038dSYoshinobu Inoue */ 93082cd038dSYoshinobu Inoue return (inp); 93182cd038dSYoshinobu Inoue } 93282cd038dSYoshinobu Inoue } 93382cd038dSYoshinobu Inoue /* 93482cd038dSYoshinobu Inoue * Not found. 93582cd038dSYoshinobu Inoue */ 93682cd038dSYoshinobu Inoue return (NULL); 93782cd038dSYoshinobu Inoue } else { 93882cd038dSYoshinobu Inoue struct inpcbporthead *porthash; 93982cd038dSYoshinobu Inoue struct inpcbport *phd; 94082cd038dSYoshinobu Inoue struct inpcb *match = NULL; 94182cd038dSYoshinobu Inoue /* 94282cd038dSYoshinobu Inoue * Best fit PCB lookup. 94382cd038dSYoshinobu Inoue * 94482cd038dSYoshinobu Inoue * First see if this local port is in use by looking on the 94582cd038dSYoshinobu Inoue * port hash list. 94682cd038dSYoshinobu Inoue */ 94782cd038dSYoshinobu Inoue porthash = &pcbinfo->porthashbase[INP_PCBPORTHASH(lport, 94882cd038dSYoshinobu Inoue pcbinfo->porthashmask)]; 94982cd038dSYoshinobu Inoue LIST_FOREACH(phd, porthash, phd_hash) { 95082cd038dSYoshinobu Inoue if (phd->phd_port == lport) 95182cd038dSYoshinobu Inoue break; 95282cd038dSYoshinobu Inoue } 95382cd038dSYoshinobu Inoue if (phd != NULL) { 95482cd038dSYoshinobu Inoue /* 95582cd038dSYoshinobu Inoue * Port is in use by one or more PCBs. Look for best 95682cd038dSYoshinobu Inoue * fit. 95782cd038dSYoshinobu Inoue */ 95882cd038dSYoshinobu Inoue LIST_FOREACH(inp, &phd->phd_pcblist, inp_portlist) { 95982cd038dSYoshinobu Inoue wildcard = 0; 960369dc8ceSEivind Eklund if ((inp->inp_vflag & INP_IPV6) == 0) 96182cd038dSYoshinobu Inoue continue; 96282cd038dSYoshinobu Inoue if (!IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr)) 96382cd038dSYoshinobu Inoue wildcard++; 96482cd038dSYoshinobu Inoue if (!IN6_IS_ADDR_UNSPECIFIED( 96582cd038dSYoshinobu Inoue &inp->in6p_laddr)) { 96682cd038dSYoshinobu Inoue if (IN6_IS_ADDR_UNSPECIFIED(laddr)) 96782cd038dSYoshinobu Inoue wildcard++; 96882cd038dSYoshinobu Inoue else if (!IN6_ARE_ADDR_EQUAL( 96982cd038dSYoshinobu Inoue &inp->in6p_laddr, laddr)) 97082cd038dSYoshinobu Inoue continue; 97182cd038dSYoshinobu Inoue } else { 97282cd038dSYoshinobu Inoue if (!IN6_IS_ADDR_UNSPECIFIED(laddr)) 97382cd038dSYoshinobu Inoue wildcard++; 97482cd038dSYoshinobu Inoue } 97582cd038dSYoshinobu Inoue if (wildcard < matchwild) { 97682cd038dSYoshinobu Inoue match = inp; 97782cd038dSYoshinobu Inoue matchwild = wildcard; 97882cd038dSYoshinobu Inoue if (matchwild == 0) { 97982cd038dSYoshinobu Inoue break; 98082cd038dSYoshinobu Inoue } 98182cd038dSYoshinobu Inoue } 98282cd038dSYoshinobu Inoue } 98382cd038dSYoshinobu Inoue } 98482cd038dSYoshinobu Inoue return (match); 98582cd038dSYoshinobu Inoue } 98682cd038dSYoshinobu Inoue } 98782cd038dSYoshinobu Inoue 988e43cc4aeSHajimu UMEMOTO void 989e43cc4aeSHajimu UMEMOTO in6_pcbpurgeif0(head, ifp) 990e43cc4aeSHajimu UMEMOTO struct in6pcb *head; 991e43cc4aeSHajimu UMEMOTO struct ifnet *ifp; 992e43cc4aeSHajimu UMEMOTO { 993e43cc4aeSHajimu UMEMOTO struct in6pcb *in6p; 994e43cc4aeSHajimu UMEMOTO struct ip6_moptions *im6o; 995e43cc4aeSHajimu UMEMOTO struct in6_multi_mship *imm, *nimm; 996e43cc4aeSHajimu UMEMOTO 997e43cc4aeSHajimu UMEMOTO for (in6p = head; in6p != NULL; in6p = LIST_NEXT(in6p, inp_list)) { 998e43cc4aeSHajimu UMEMOTO im6o = in6p->in6p_moptions; 999e43cc4aeSHajimu UMEMOTO if ((in6p->inp_vflag & INP_IPV6) && 1000e43cc4aeSHajimu UMEMOTO im6o) { 1001e43cc4aeSHajimu UMEMOTO /* 1002e43cc4aeSHajimu UMEMOTO * Unselect the outgoing interface if it is being 1003e43cc4aeSHajimu UMEMOTO * detached. 1004e43cc4aeSHajimu UMEMOTO */ 1005e43cc4aeSHajimu UMEMOTO if (im6o->im6o_multicast_ifp == ifp) 1006e43cc4aeSHajimu UMEMOTO im6o->im6o_multicast_ifp = NULL; 1007e43cc4aeSHajimu UMEMOTO 1008e43cc4aeSHajimu UMEMOTO /* 1009e43cc4aeSHajimu UMEMOTO * Drop multicast group membership if we joined 1010e43cc4aeSHajimu UMEMOTO * through the interface being detached. 1011e43cc4aeSHajimu UMEMOTO * XXX controversial - is it really legal for kernel 1012e43cc4aeSHajimu UMEMOTO * to force this? 1013e43cc4aeSHajimu UMEMOTO */ 1014e43cc4aeSHajimu UMEMOTO for (imm = im6o->im6o_memberships.lh_first; 1015e43cc4aeSHajimu UMEMOTO imm != NULL; imm = nimm) { 1016e43cc4aeSHajimu UMEMOTO nimm = imm->i6mm_chain.le_next; 1017e43cc4aeSHajimu UMEMOTO if (imm->i6mm_maddr->in6m_ifp == ifp) { 1018e43cc4aeSHajimu UMEMOTO LIST_REMOVE(imm, i6mm_chain); 1019e43cc4aeSHajimu UMEMOTO in6_delmulti(imm->i6mm_maddr); 1020e43cc4aeSHajimu UMEMOTO free(imm, M_IPMADDR); 1021e43cc4aeSHajimu UMEMOTO } 1022e43cc4aeSHajimu UMEMOTO } 1023e43cc4aeSHajimu UMEMOTO } 1024e43cc4aeSHajimu UMEMOTO } 1025e43cc4aeSHajimu UMEMOTO } 1026e43cc4aeSHajimu UMEMOTO 102782cd038dSYoshinobu Inoue /* 102882cd038dSYoshinobu Inoue * Check for alternatives when higher level complains 102982cd038dSYoshinobu Inoue * about service problems. For now, invalidate cached 103082cd038dSYoshinobu Inoue * routing information. If the route was created dynamically 103182cd038dSYoshinobu Inoue * (by a redirect), time to try a default gateway again. 103282cd038dSYoshinobu Inoue */ 103382cd038dSYoshinobu Inoue void 103482cd038dSYoshinobu Inoue in6_losing(in6p) 103582cd038dSYoshinobu Inoue struct inpcb *in6p; 103682cd038dSYoshinobu Inoue { 103782cd038dSYoshinobu Inoue struct rtentry *rt; 103882cd038dSYoshinobu Inoue struct rt_addrinfo info; 103982cd038dSYoshinobu Inoue 104082cd038dSYoshinobu Inoue if ((rt = in6p->in6p_route.ro_rt) != NULL) { 104182cd038dSYoshinobu Inoue bzero((caddr_t)&info, sizeof(info)); 10428071913dSRuslan Ermilov info.rti_flags = rt->rt_flags; 10438071913dSRuslan Ermilov info.rti_info[RTAX_DST] = rt_key(rt); 104482cd038dSYoshinobu Inoue info.rti_info[RTAX_GATEWAY] = rt->rt_gateway; 104582cd038dSYoshinobu Inoue info.rti_info[RTAX_NETMASK] = rt_mask(rt); 104682cd038dSYoshinobu Inoue rt_missmsg(RTM_LOSING, &info, rt->rt_flags, 0); 104782cd038dSYoshinobu Inoue if (rt->rt_flags & RTF_DYNAMIC) 10488071913dSRuslan Ermilov (void)rtrequest1(RTM_DELETE, &info, NULL); 104965ad7c43SRuslan Ermilov in6p->in6p_route.ro_rt = NULL; 105065ad7c43SRuslan Ermilov rtfree(rt); 105182cd038dSYoshinobu Inoue /* 105282cd038dSYoshinobu Inoue * A new route can be allocated 105382cd038dSYoshinobu Inoue * the next time output is attempted. 105482cd038dSYoshinobu Inoue */ 105582cd038dSYoshinobu Inoue } 105682cd038dSYoshinobu Inoue } 105782cd038dSYoshinobu Inoue 105882cd038dSYoshinobu Inoue /* 105982cd038dSYoshinobu Inoue * After a routing change, flush old routing 106082cd038dSYoshinobu Inoue * and allocate a (hopefully) better one. 106182cd038dSYoshinobu Inoue */ 10623ce144eaSJeffrey Hsu struct inpcb * 106382cd038dSYoshinobu Inoue in6_rtchange(inp, errno) 106482cd038dSYoshinobu Inoue struct inpcb *inp; 106582cd038dSYoshinobu Inoue int errno; 106682cd038dSYoshinobu Inoue { 106782cd038dSYoshinobu Inoue if (inp->in6p_route.ro_rt) { 106882cd038dSYoshinobu Inoue rtfree(inp->in6p_route.ro_rt); 106982cd038dSYoshinobu Inoue inp->in6p_route.ro_rt = 0; 107082cd038dSYoshinobu Inoue /* 107182cd038dSYoshinobu Inoue * A new route can be allocated the next time 107282cd038dSYoshinobu Inoue * output is attempted. 107382cd038dSYoshinobu Inoue */ 107482cd038dSYoshinobu Inoue } 10753ce144eaSJeffrey Hsu return inp; 107682cd038dSYoshinobu Inoue } 107782cd038dSYoshinobu Inoue 107882cd038dSYoshinobu Inoue /* 107982cd038dSYoshinobu Inoue * Lookup PCB in hash list. 108082cd038dSYoshinobu Inoue */ 108182cd038dSYoshinobu Inoue struct inpcb * 108282cd038dSYoshinobu Inoue in6_pcblookup_hash(pcbinfo, faddr, fport_arg, laddr, lport_arg, wildcard, ifp) 108382cd038dSYoshinobu Inoue struct inpcbinfo *pcbinfo; 108482cd038dSYoshinobu Inoue struct in6_addr *faddr, *laddr; 108582cd038dSYoshinobu Inoue u_int fport_arg, lport_arg; 108682cd038dSYoshinobu Inoue int wildcard; 108782cd038dSYoshinobu Inoue struct ifnet *ifp; 108882cd038dSYoshinobu Inoue { 108982cd038dSYoshinobu Inoue struct inpcbhead *head; 109082cd038dSYoshinobu Inoue register struct inpcb *inp; 109182cd038dSYoshinobu Inoue u_short fport = fport_arg, lport = lport_arg; 109233841545SHajimu UMEMOTO int faith; 109333841545SHajimu UMEMOTO 10949494d596SBrooks Davis if (faithprefix_p != NULL) 10959494d596SBrooks Davis faith = (*faithprefix_p)(laddr); 10969494d596SBrooks Davis else 109733841545SHajimu UMEMOTO faith = 0; 109882cd038dSYoshinobu Inoue 109982cd038dSYoshinobu Inoue /* 110082cd038dSYoshinobu Inoue * First look for an exact match. 110182cd038dSYoshinobu Inoue */ 110282cd038dSYoshinobu Inoue head = &pcbinfo->hashbase[INP_PCBHASH(faddr->s6_addr32[3] /* XXX */, 110382cd038dSYoshinobu Inoue lport, fport, 110482cd038dSYoshinobu Inoue pcbinfo->hashmask)]; 1105cfa1ca9dSYoshinobu Inoue LIST_FOREACH(inp, head, inp_hash) { 1106369dc8ceSEivind Eklund if ((inp->inp_vflag & INP_IPV6) == 0) 110782cd038dSYoshinobu Inoue continue; 110882cd038dSYoshinobu Inoue if (IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr, faddr) && 110982cd038dSYoshinobu Inoue IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr) && 111082cd038dSYoshinobu Inoue inp->inp_fport == fport && 111182cd038dSYoshinobu Inoue inp->inp_lport == lport) { 111282cd038dSYoshinobu Inoue /* 111382cd038dSYoshinobu Inoue * Found. 111482cd038dSYoshinobu Inoue */ 111582cd038dSYoshinobu Inoue return (inp); 111682cd038dSYoshinobu Inoue } 111782cd038dSYoshinobu Inoue } 111882cd038dSYoshinobu Inoue if (wildcard) { 111982cd038dSYoshinobu Inoue struct inpcb *local_wild = NULL; 112082cd038dSYoshinobu Inoue 112182cd038dSYoshinobu Inoue head = &pcbinfo->hashbase[INP_PCBHASH(INADDR_ANY, lport, 0, 112282cd038dSYoshinobu Inoue pcbinfo->hashmask)]; 1123cfa1ca9dSYoshinobu Inoue LIST_FOREACH(inp, head, inp_hash) { 1124369dc8ceSEivind Eklund if ((inp->inp_vflag & INP_IPV6) == 0) 112582cd038dSYoshinobu Inoue continue; 112682cd038dSYoshinobu Inoue if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) && 112782cd038dSYoshinobu Inoue inp->inp_lport == lport) { 112833841545SHajimu UMEMOTO if (faith && (inp->inp_flags & INP_FAITH) == 0) 112982cd038dSYoshinobu Inoue continue; 113082cd038dSYoshinobu Inoue if (IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, 113182cd038dSYoshinobu Inoue laddr)) 113282cd038dSYoshinobu Inoue return (inp); 113382cd038dSYoshinobu Inoue else if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) 113482cd038dSYoshinobu Inoue local_wild = inp; 113582cd038dSYoshinobu Inoue } 113682cd038dSYoshinobu Inoue } 113782cd038dSYoshinobu Inoue return (local_wild); 113882cd038dSYoshinobu Inoue } 113982cd038dSYoshinobu Inoue 114082cd038dSYoshinobu Inoue /* 114182cd038dSYoshinobu Inoue * Not found. 114282cd038dSYoshinobu Inoue */ 114382cd038dSYoshinobu Inoue return (NULL); 114482cd038dSYoshinobu Inoue } 114582cd038dSYoshinobu Inoue 114682cd038dSYoshinobu Inoue void 114782cd038dSYoshinobu Inoue init_sin6(struct sockaddr_in6 *sin6, struct mbuf *m) 114882cd038dSYoshinobu Inoue { 114982cd038dSYoshinobu Inoue struct ip6_hdr *ip; 115082cd038dSYoshinobu Inoue 115182cd038dSYoshinobu Inoue ip = mtod(m, struct ip6_hdr *); 115282cd038dSYoshinobu Inoue bzero(sin6, sizeof(*sin6)); 115382cd038dSYoshinobu Inoue sin6->sin6_len = sizeof(*sin6); 115482cd038dSYoshinobu Inoue sin6->sin6_family = AF_INET6; 115582cd038dSYoshinobu Inoue sin6->sin6_addr = ip->ip6_src; 115682cd038dSYoshinobu Inoue if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) 115782cd038dSYoshinobu Inoue sin6->sin6_addr.s6_addr16[1] = 0; 115882cd038dSYoshinobu Inoue sin6->sin6_scope_id = 115982cd038dSYoshinobu Inoue (m->m_pkthdr.rcvif && IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) 116082cd038dSYoshinobu Inoue ? m->m_pkthdr.rcvif->if_index : 0; 116182cd038dSYoshinobu Inoue 116282cd038dSYoshinobu Inoue return; 116382cd038dSYoshinobu Inoue } 1164