1686cdd19SJun-ichiro itojun Hagino /* $FreeBSD$ */ 2686cdd19SJun-ichiro itojun Hagino /* $KAME: in6_pcb.c,v 1.8 2000/06/09 00:37:02 itojun 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 696a800098SYoshinobu Inoue #include "opt_ipsec.h" 7082cd038dSYoshinobu Inoue 7182cd038dSYoshinobu Inoue #include <sys/param.h> 7282cd038dSYoshinobu Inoue #include <sys/systm.h> 7382cd038dSYoshinobu Inoue #include <sys/malloc.h> 7482cd038dSYoshinobu Inoue #include <sys/mbuf.h> 75fb59c426SYoshinobu Inoue #include <sys/domain.h> 7682cd038dSYoshinobu Inoue #include <sys/protosw.h> 7782cd038dSYoshinobu Inoue #include <sys/socket.h> 7882cd038dSYoshinobu Inoue #include <sys/socketvar.h> 7982cd038dSYoshinobu Inoue #include <sys/sockio.h> 8082cd038dSYoshinobu Inoue #include <sys/errno.h> 8182cd038dSYoshinobu Inoue #include <sys/time.h> 8282cd038dSYoshinobu Inoue #include <sys/proc.h> 8382cd038dSYoshinobu Inoue #include <sys/jail.h> 8482cd038dSYoshinobu Inoue 8582cd038dSYoshinobu Inoue #include <vm/vm_zone.h> 8682cd038dSYoshinobu Inoue 8782cd038dSYoshinobu Inoue #include <net/if.h> 8882cd038dSYoshinobu Inoue #include <net/if_types.h> 8982cd038dSYoshinobu Inoue #include <net/route.h> 9082cd038dSYoshinobu Inoue 9182cd038dSYoshinobu Inoue #include <netinet/in.h> 9282cd038dSYoshinobu Inoue #include <netinet/in_var.h> 9382cd038dSYoshinobu Inoue #include <netinet/in_systm.h> 94686cdd19SJun-ichiro itojun Hagino #include <netinet/ip6.h> 95fb59c426SYoshinobu Inoue #include <netinet/ip_var.h> 9682cd038dSYoshinobu Inoue #include <netinet6/ip6_var.h> 9782cd038dSYoshinobu Inoue #include <netinet6/nd6.h> 9882cd038dSYoshinobu Inoue #include <netinet/in_pcb.h> 9982cd038dSYoshinobu Inoue #include <netinet6/in6_pcb.h> 10082cd038dSYoshinobu Inoue 101cfa1ca9dSYoshinobu Inoue #include "faith.h" 10282cd038dSYoshinobu Inoue 10382cd038dSYoshinobu Inoue #ifdef IPSEC 10482cd038dSYoshinobu Inoue #include <netinet6/ipsec.h> 1056a800098SYoshinobu Inoue #include <netinet6/ah.h> 10682cd038dSYoshinobu Inoue #include <netinet6/ipsec6.h> 1076a800098SYoshinobu Inoue #include <netinet6/ah6.h> 10882cd038dSYoshinobu Inoue #include <netkey/key.h> 10982cd038dSYoshinobu Inoue #endif /* IPSEC */ 11082cd038dSYoshinobu Inoue 11182cd038dSYoshinobu Inoue struct in6_addr zeroin6_addr; 11282cd038dSYoshinobu Inoue 11382cd038dSYoshinobu Inoue int 11482cd038dSYoshinobu Inoue in6_pcbbind(inp, nam, p) 11582cd038dSYoshinobu Inoue register struct inpcb *inp; 11682cd038dSYoshinobu Inoue struct sockaddr *nam; 11782cd038dSYoshinobu Inoue struct proc *p; 11882cd038dSYoshinobu Inoue { 11982cd038dSYoshinobu Inoue struct socket *so = inp->inp_socket; 12082cd038dSYoshinobu Inoue struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)NULL; 12182cd038dSYoshinobu Inoue struct inpcbinfo *pcbinfo = inp->inp_pcbinfo; 12282cd038dSYoshinobu Inoue u_short lport = 0; 12382cd038dSYoshinobu Inoue int wild = 0, reuseport = (so->so_options & SO_REUSEPORT); 12482cd038dSYoshinobu Inoue 12582cd038dSYoshinobu Inoue if (!in6_ifaddr) /* XXX broken! */ 12682cd038dSYoshinobu Inoue return (EADDRNOTAVAIL); 12782cd038dSYoshinobu Inoue if (inp->inp_lport || !IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) 12882cd038dSYoshinobu Inoue return(EINVAL); 12982cd038dSYoshinobu Inoue if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT)) == 0) 13082cd038dSYoshinobu Inoue wild = 1; 13182cd038dSYoshinobu Inoue if (nam) { 13282cd038dSYoshinobu Inoue sin6 = (struct sockaddr_in6 *)nam; 13382cd038dSYoshinobu Inoue if (nam->sa_len != sizeof(*sin6)) 13482cd038dSYoshinobu Inoue return(EINVAL); 13582cd038dSYoshinobu Inoue /* 13682cd038dSYoshinobu Inoue * family check. 13782cd038dSYoshinobu Inoue */ 13882cd038dSYoshinobu Inoue if (nam->sa_family != AF_INET6) 13982cd038dSYoshinobu Inoue return(EAFNOSUPPORT); 14082cd038dSYoshinobu Inoue 141686cdd19SJun-ichiro itojun Hagino /* KAME hack: embed scopeid */ 142686cdd19SJun-ichiro itojun Hagino if (in6_embedscope(&sin6->sin6_addr, sin6, inp, NULL) != 0) 143686cdd19SJun-ichiro itojun Hagino return EINVAL; 14482cd038dSYoshinobu Inoue /* this must be cleared for ifa_ifwithaddr() */ 14582cd038dSYoshinobu Inoue sin6->sin6_scope_id = 0; 14682cd038dSYoshinobu Inoue 14782cd038dSYoshinobu Inoue lport = sin6->sin6_port; 14882cd038dSYoshinobu Inoue if (IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) { 14982cd038dSYoshinobu Inoue /* 15082cd038dSYoshinobu Inoue * Treat SO_REUSEADDR as SO_REUSEPORT for multicast; 15182cd038dSYoshinobu Inoue * allow compepte duplication of binding if 15282cd038dSYoshinobu Inoue * SO_REUSEPORT is set, or if SO_REUSEADDR is set 15382cd038dSYoshinobu Inoue * and a multicast address is bound on both 15482cd038dSYoshinobu Inoue * new and duplicated sockets. 15582cd038dSYoshinobu Inoue */ 15682cd038dSYoshinobu Inoue if (so->so_options & SO_REUSEADDR) 15782cd038dSYoshinobu Inoue reuseport = SO_REUSEADDR|SO_REUSEPORT; 15882cd038dSYoshinobu Inoue } else if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 15982cd038dSYoshinobu Inoue struct ifaddr *ia = NULL; 16082cd038dSYoshinobu Inoue 16182cd038dSYoshinobu Inoue sin6->sin6_port = 0; /* yech... */ 16282cd038dSYoshinobu Inoue if ((ia = ifa_ifwithaddr((struct sockaddr *)sin6)) == 0) 16382cd038dSYoshinobu Inoue return(EADDRNOTAVAIL); 16482cd038dSYoshinobu Inoue 16582cd038dSYoshinobu Inoue /* 16682cd038dSYoshinobu Inoue * XXX: bind to an anycast address might accidentally 16782cd038dSYoshinobu Inoue * cause sending a packet with anycast source address. 16882cd038dSYoshinobu Inoue */ 16982cd038dSYoshinobu Inoue if (ia && 17082cd038dSYoshinobu Inoue ((struct in6_ifaddr *)ia)->ia6_flags & 17182cd038dSYoshinobu Inoue (IN6_IFF_ANYCAST|IN6_IFF_NOTREADY| 17282cd038dSYoshinobu Inoue IN6_IFF_DETACHED|IN6_IFF_DEPRECATED)) { 17382cd038dSYoshinobu Inoue return(EADDRNOTAVAIL); 17482cd038dSYoshinobu Inoue } 17582cd038dSYoshinobu Inoue } 17682cd038dSYoshinobu Inoue if (lport) { 17782cd038dSYoshinobu Inoue struct inpcb *t; 17882cd038dSYoshinobu Inoue 17982cd038dSYoshinobu Inoue /* GROSS */ 18082cd038dSYoshinobu Inoue if (ntohs(lport) < IPV6PORT_RESERVED && p && 18182cd038dSYoshinobu Inoue suser_xxx(0, p, PRISON_ROOT)) 18282cd038dSYoshinobu Inoue return(EACCES); 18382cd038dSYoshinobu Inoue if (so->so_cred->cr_uid != 0 && 18482cd038dSYoshinobu Inoue !IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) { 185fb59c426SYoshinobu Inoue t = in6_pcblookup_local(pcbinfo, 18682cd038dSYoshinobu Inoue &sin6->sin6_addr, lport, 18782cd038dSYoshinobu Inoue INPLOOKUP_WILDCARD); 18882cd038dSYoshinobu Inoue if (t && 18982cd038dSYoshinobu Inoue (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) || 19082cd038dSYoshinobu Inoue !IN6_IS_ADDR_UNSPECIFIED(&t->in6p_laddr) || 19182cd038dSYoshinobu Inoue (t->inp_socket->so_options & 19282cd038dSYoshinobu Inoue SO_REUSEPORT) == 0) && 19382cd038dSYoshinobu Inoue (so->so_cred->cr_uid != 19482cd038dSYoshinobu Inoue t->inp_socket->so_cred->cr_uid)) 19582cd038dSYoshinobu Inoue return (EADDRINUSE); 196686cdd19SJun-ichiro itojun Hagino if (ip6_mapped_addr_on != 0 && 197fb59c426SYoshinobu Inoue IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 198fb59c426SYoshinobu Inoue struct sockaddr_in sin; 199fb59c426SYoshinobu Inoue 200fb59c426SYoshinobu Inoue in6_sin6_2_sin(&sin, sin6); 201fb59c426SYoshinobu Inoue t = in_pcblookup_local(pcbinfo, 202fb59c426SYoshinobu Inoue sin.sin_addr, lport, 203fb59c426SYoshinobu Inoue INPLOOKUP_WILDCARD); 204fb59c426SYoshinobu Inoue if (t && 205fb59c426SYoshinobu Inoue (so->so_cred->cr_uid != 206fb59c426SYoshinobu Inoue t->inp_socket->so_cred->cr_uid) && 207fb59c426SYoshinobu Inoue (ntohl(t->inp_laddr.s_addr) != 208fb59c426SYoshinobu Inoue INADDR_ANY || 209fb59c426SYoshinobu Inoue INP_SOCKAF(so) == 210fb59c426SYoshinobu Inoue INP_SOCKAF(t->inp_socket))) 211fb59c426SYoshinobu Inoue return (EADDRINUSE); 212fb59c426SYoshinobu Inoue } 21382cd038dSYoshinobu Inoue } 21482cd038dSYoshinobu Inoue t = in6_pcblookup_local(pcbinfo, &sin6->sin6_addr, 21582cd038dSYoshinobu Inoue lport, wild); 21682cd038dSYoshinobu Inoue if (t && (reuseport & t->inp_socket->so_options) == 0) 21782cd038dSYoshinobu Inoue return(EADDRINUSE); 218686cdd19SJun-ichiro itojun Hagino if (ip6_mapped_addr_on != 0 && 219fb59c426SYoshinobu Inoue IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 220fb59c426SYoshinobu Inoue struct sockaddr_in sin; 221fb59c426SYoshinobu Inoue 222fb59c426SYoshinobu Inoue in6_sin6_2_sin(&sin, sin6); 223fb59c426SYoshinobu Inoue t = in_pcblookup_local(pcbinfo, sin.sin_addr, 224fb59c426SYoshinobu Inoue lport, wild); 225fb59c426SYoshinobu Inoue if (t && 226fb59c426SYoshinobu Inoue (reuseport & t->inp_socket->so_options) 227fb59c426SYoshinobu Inoue == 0 && 228fb59c426SYoshinobu Inoue (ntohl(t->inp_laddr.s_addr) 229fb59c426SYoshinobu Inoue != INADDR_ANY || 230fb59c426SYoshinobu Inoue INP_SOCKAF(so) == 231fb59c426SYoshinobu Inoue INP_SOCKAF(t->inp_socket))) 232fb59c426SYoshinobu Inoue return (EADDRINUSE); 233fb59c426SYoshinobu Inoue } 23482cd038dSYoshinobu Inoue } 23582cd038dSYoshinobu Inoue inp->in6p_laddr = sin6->sin6_addr; 23682cd038dSYoshinobu Inoue } 23782cd038dSYoshinobu Inoue if (lport == 0) { 238686cdd19SJun-ichiro itojun Hagino int e; 239686cdd19SJun-ichiro itojun Hagino if ((e = in6_pcbsetport(&inp->in6p_laddr, inp, p)) != 0) 240686cdd19SJun-ichiro itojun Hagino return(e); 24182cd038dSYoshinobu Inoue } 242686cdd19SJun-ichiro itojun Hagino else { 24382cd038dSYoshinobu Inoue inp->inp_lport = lport; 24482cd038dSYoshinobu Inoue if (in_pcbinshash(inp) != 0) { 24582cd038dSYoshinobu Inoue inp->in6p_laddr = in6addr_any; 24682cd038dSYoshinobu Inoue inp->inp_lport = 0; 24782cd038dSYoshinobu Inoue return (EAGAIN); 24882cd038dSYoshinobu Inoue } 249686cdd19SJun-ichiro itojun Hagino } 25082cd038dSYoshinobu Inoue inp->in6p_flowinfo = sin6 ? sin6->sin6_flowinfo : 0; /*XXX*/ 25182cd038dSYoshinobu Inoue return(0); 25282cd038dSYoshinobu Inoue } 25382cd038dSYoshinobu Inoue 25482cd038dSYoshinobu Inoue /* 25582cd038dSYoshinobu Inoue * Transform old in6_pcbconnect() into an inner subroutine for new 25682cd038dSYoshinobu Inoue * in6_pcbconnect(): Do some validity-checking on the remote 25782cd038dSYoshinobu Inoue * address (in mbuf 'nam') and then determine local host address 25882cd038dSYoshinobu Inoue * (i.e., which interface) to use to access that remote host. 25982cd038dSYoshinobu Inoue * 26082cd038dSYoshinobu Inoue * This preserves definition of in6_pcbconnect(), while supporting a 26182cd038dSYoshinobu Inoue * slightly different version for T/TCP. (This is more than 26282cd038dSYoshinobu Inoue * a bit of a kludge, but cleaning up the internal interfaces would 26382cd038dSYoshinobu Inoue * have forced minor changes in every protocol). 26482cd038dSYoshinobu Inoue */ 26582cd038dSYoshinobu Inoue 26682cd038dSYoshinobu Inoue int 26782cd038dSYoshinobu Inoue in6_pcbladdr(inp, nam, plocal_addr6) 26882cd038dSYoshinobu Inoue register struct inpcb *inp; 26982cd038dSYoshinobu Inoue struct sockaddr *nam; 27082cd038dSYoshinobu Inoue struct in6_addr **plocal_addr6; 27182cd038dSYoshinobu Inoue { 27282cd038dSYoshinobu Inoue register struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam; 27382cd038dSYoshinobu Inoue struct in6_pktinfo *pi; 27482cd038dSYoshinobu Inoue struct ifnet *ifp = NULL; 27582cd038dSYoshinobu Inoue int error = 0; 27682cd038dSYoshinobu Inoue 27782cd038dSYoshinobu Inoue if (nam->sa_len != sizeof (*sin6)) 27882cd038dSYoshinobu Inoue return (EINVAL); 27982cd038dSYoshinobu Inoue if (sin6->sin6_family != AF_INET6) 28082cd038dSYoshinobu Inoue return (EAFNOSUPPORT); 28182cd038dSYoshinobu Inoue if (sin6->sin6_port == 0) 28282cd038dSYoshinobu Inoue return (EADDRNOTAVAIL); 28382cd038dSYoshinobu Inoue 284686cdd19SJun-ichiro itojun Hagino /* KAME hack: embed scopeid */ 285686cdd19SJun-ichiro itojun Hagino if (in6_embedscope(&sin6->sin6_addr, sin6, inp, &ifp) != 0) 286686cdd19SJun-ichiro itojun Hagino return EINVAL; 28782cd038dSYoshinobu Inoue 28882cd038dSYoshinobu Inoue if (in6_ifaddr) { 28982cd038dSYoshinobu Inoue /* 29082cd038dSYoshinobu Inoue * If the destination address is UNSPECIFIED addr, 29182cd038dSYoshinobu Inoue * use the loopback addr, e.g ::1. 29282cd038dSYoshinobu Inoue */ 29382cd038dSYoshinobu Inoue if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) 29482cd038dSYoshinobu Inoue sin6->sin6_addr = in6addr_loopback; 29582cd038dSYoshinobu Inoue } 29682cd038dSYoshinobu Inoue { 29782cd038dSYoshinobu Inoue /* 29882cd038dSYoshinobu Inoue * XXX: in6_selectsrc might replace the bound local address 29982cd038dSYoshinobu Inoue * with the address specified by setsockopt(IPV6_PKTINFO). 30082cd038dSYoshinobu Inoue * Is it the intended behavior? 30182cd038dSYoshinobu Inoue */ 30282cd038dSYoshinobu Inoue *plocal_addr6 = in6_selectsrc(sin6, inp->in6p_outputopts, 30382cd038dSYoshinobu Inoue inp->in6p_moptions, 30482cd038dSYoshinobu Inoue &inp->in6p_route, 30582cd038dSYoshinobu Inoue &inp->in6p_laddr, &error); 30682cd038dSYoshinobu Inoue if (*plocal_addr6 == 0) { 30782cd038dSYoshinobu Inoue if (error == 0) 30882cd038dSYoshinobu Inoue error = EADDRNOTAVAIL; 30982cd038dSYoshinobu Inoue return(error); 31082cd038dSYoshinobu Inoue } 31182cd038dSYoshinobu Inoue /* 31282cd038dSYoshinobu Inoue * Don't do pcblookup call here; return interface in 31382cd038dSYoshinobu Inoue * plocal_addr6 31482cd038dSYoshinobu Inoue * and exit to caller, that will do the lookup. 31582cd038dSYoshinobu Inoue */ 31682cd038dSYoshinobu Inoue } 31782cd038dSYoshinobu Inoue 31882cd038dSYoshinobu Inoue if (inp->in6p_route.ro_rt) 31982cd038dSYoshinobu Inoue ifp = inp->in6p_route.ro_rt->rt_ifp; 32082cd038dSYoshinobu Inoue 32182cd038dSYoshinobu Inoue return(0); 32282cd038dSYoshinobu Inoue } 32382cd038dSYoshinobu Inoue 32482cd038dSYoshinobu Inoue /* 32582cd038dSYoshinobu Inoue * Outer subroutine: 32682cd038dSYoshinobu Inoue * Connect from a socket to a specified address. 32782cd038dSYoshinobu Inoue * Both address and port must be specified in argument sin. 32882cd038dSYoshinobu Inoue * If don't have a local address for this socket yet, 32982cd038dSYoshinobu Inoue * then pick one. 33082cd038dSYoshinobu Inoue */ 33182cd038dSYoshinobu Inoue int 33282cd038dSYoshinobu Inoue in6_pcbconnect(inp, nam, p) 33382cd038dSYoshinobu Inoue register struct inpcb *inp; 33482cd038dSYoshinobu Inoue struct sockaddr *nam; 33582cd038dSYoshinobu Inoue struct proc *p; 33682cd038dSYoshinobu Inoue { 33782cd038dSYoshinobu Inoue struct in6_addr *addr6; 33882cd038dSYoshinobu Inoue register struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam; 33982cd038dSYoshinobu Inoue int error; 34082cd038dSYoshinobu Inoue 34182cd038dSYoshinobu Inoue /* 34282cd038dSYoshinobu Inoue * Call inner routine, to assign local interface address. 34382cd038dSYoshinobu Inoue */ 34482cd038dSYoshinobu Inoue if ((error = in6_pcbladdr(inp, nam, &addr6)) != 0) 34582cd038dSYoshinobu Inoue return(error); 34682cd038dSYoshinobu Inoue 34782cd038dSYoshinobu Inoue if (in6_pcblookup_hash(inp->inp_pcbinfo, &sin6->sin6_addr, 34882cd038dSYoshinobu Inoue sin6->sin6_port, 34982cd038dSYoshinobu Inoue IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr) 35082cd038dSYoshinobu Inoue ? addr6 : &inp->in6p_laddr, 35182cd038dSYoshinobu Inoue inp->inp_lport, 0, NULL) != NULL) { 35282cd038dSYoshinobu Inoue return (EADDRINUSE); 35382cd038dSYoshinobu Inoue } 35482cd038dSYoshinobu Inoue if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) { 35582cd038dSYoshinobu Inoue if (inp->inp_lport == 0) { 35682cd038dSYoshinobu Inoue error = in6_pcbbind(inp, (struct sockaddr *)0, p); 35782cd038dSYoshinobu Inoue if (error) 35882cd038dSYoshinobu Inoue return (error); 35982cd038dSYoshinobu Inoue } 36082cd038dSYoshinobu Inoue inp->in6p_laddr = *addr6; 36182cd038dSYoshinobu Inoue } 36282cd038dSYoshinobu Inoue inp->in6p_faddr = sin6->sin6_addr; 36382cd038dSYoshinobu Inoue inp->inp_fport = sin6->sin6_port; 36482cd038dSYoshinobu Inoue /* 36582cd038dSYoshinobu Inoue * xxx kazu flowlabel is necessary for connect? 36682cd038dSYoshinobu Inoue * but if this line is missing, the garbage value remains. 36782cd038dSYoshinobu Inoue */ 36882cd038dSYoshinobu Inoue inp->in6p_flowinfo = sin6->sin6_flowinfo; 369fb59c426SYoshinobu Inoue if ((inp->in6p_flowinfo & IPV6_FLOWLABEL_MASK) == 0 && 370ba9b0650SYoshinobu Inoue ip6_auto_flowlabel != 0) 371fb59c426SYoshinobu Inoue inp->in6p_flowinfo |= 372fb59c426SYoshinobu Inoue (htonl(ip6_flow_seq++) & IPV6_FLOWLABEL_MASK); 37382cd038dSYoshinobu Inoue 37482cd038dSYoshinobu Inoue in_pcbrehash(inp); 37582cd038dSYoshinobu Inoue return (0); 37682cd038dSYoshinobu Inoue } 37782cd038dSYoshinobu Inoue 378686cdd19SJun-ichiro itojun Hagino #if 0 37982cd038dSYoshinobu Inoue /* 38082cd038dSYoshinobu Inoue * Return an IPv6 address, which is the most appropriate for given 38182cd038dSYoshinobu Inoue * destination and user specified options. 38282cd038dSYoshinobu Inoue * If necessary, this function lookups the routing table and return 38382cd038dSYoshinobu Inoue * an entry to the caller for later use. 38482cd038dSYoshinobu Inoue */ 38582cd038dSYoshinobu Inoue struct in6_addr * 38682cd038dSYoshinobu Inoue in6_selectsrc(dstsock, opts, mopts, ro, laddr, errorp) 38782cd038dSYoshinobu Inoue struct sockaddr_in6 *dstsock; 38882cd038dSYoshinobu Inoue struct ip6_pktopts *opts; 38982cd038dSYoshinobu Inoue struct ip6_moptions *mopts; 39082cd038dSYoshinobu Inoue struct route_in6 *ro; 39182cd038dSYoshinobu Inoue struct in6_addr *laddr; 39282cd038dSYoshinobu Inoue int *errorp; 39382cd038dSYoshinobu Inoue { 39482cd038dSYoshinobu Inoue struct in6_addr *dst; 39582cd038dSYoshinobu Inoue struct in6_ifaddr *ia6 = 0; 39682cd038dSYoshinobu Inoue struct in6_pktinfo *pi = NULL; 39782cd038dSYoshinobu Inoue 39882cd038dSYoshinobu Inoue dst = &dstsock->sin6_addr; 39982cd038dSYoshinobu Inoue *errorp = 0; 40082cd038dSYoshinobu Inoue 40182cd038dSYoshinobu Inoue /* 40282cd038dSYoshinobu Inoue * If the source address is explicitly specified by the caller, 40382cd038dSYoshinobu Inoue * use it. 40482cd038dSYoshinobu Inoue */ 40582cd038dSYoshinobu Inoue if (opts && (pi = opts->ip6po_pktinfo) && 40682cd038dSYoshinobu Inoue !IN6_IS_ADDR_UNSPECIFIED(&pi->ipi6_addr)) 40782cd038dSYoshinobu Inoue return(&pi->ipi6_addr); 40882cd038dSYoshinobu Inoue 40982cd038dSYoshinobu Inoue /* 41082cd038dSYoshinobu Inoue * If the source address is not specified but the socket(if any) 41182cd038dSYoshinobu Inoue * is already bound, use the bound address. 41282cd038dSYoshinobu Inoue */ 41382cd038dSYoshinobu Inoue if (laddr && !IN6_IS_ADDR_UNSPECIFIED(laddr)) 41482cd038dSYoshinobu Inoue return(laddr); 41582cd038dSYoshinobu Inoue 41682cd038dSYoshinobu Inoue /* 41782cd038dSYoshinobu Inoue * If the caller doesn't specify the source address but 41882cd038dSYoshinobu Inoue * the outgoing interface, use an address associated with 41982cd038dSYoshinobu Inoue * the interface. 42082cd038dSYoshinobu Inoue */ 42182cd038dSYoshinobu Inoue if (pi && pi->ipi6_ifindex) { 42282cd038dSYoshinobu Inoue /* XXX boundary check is assumed to be already done. */ 42382cd038dSYoshinobu Inoue ia6 = in6_ifawithscope(ifindex2ifnet[pi->ipi6_ifindex], 42482cd038dSYoshinobu Inoue dst); 42582cd038dSYoshinobu Inoue if (ia6 == 0) { 42682cd038dSYoshinobu Inoue *errorp = EADDRNOTAVAIL; 42782cd038dSYoshinobu Inoue return(0); 42882cd038dSYoshinobu Inoue } 42982cd038dSYoshinobu Inoue return(&satosin6(&ia6->ia_addr)->sin6_addr); 43082cd038dSYoshinobu Inoue } 43182cd038dSYoshinobu Inoue 43282cd038dSYoshinobu Inoue /* 43382cd038dSYoshinobu Inoue * If the destination address is a link-local unicast address or 43482cd038dSYoshinobu Inoue * a multicast address, and if the outgoing interface is specified 43582cd038dSYoshinobu Inoue * by the sin6_scope_id filed, use an address associated with the 43682cd038dSYoshinobu Inoue * interface. 43782cd038dSYoshinobu Inoue * XXX: We're now trying to define more specific semantics of 43882cd038dSYoshinobu Inoue * sin6_scope_id field, so this part will be rewritten in 43982cd038dSYoshinobu Inoue * the near future. 44082cd038dSYoshinobu Inoue */ 44182cd038dSYoshinobu Inoue if ((IN6_IS_ADDR_LINKLOCAL(dst) || IN6_IS_ADDR_MULTICAST(dst)) && 44282cd038dSYoshinobu Inoue dstsock->sin6_scope_id) { 44382cd038dSYoshinobu Inoue /* 44482cd038dSYoshinobu Inoue * I'm not sure if boundary check for scope_id is done 44582cd038dSYoshinobu Inoue * somewhere... 44682cd038dSYoshinobu Inoue */ 44782cd038dSYoshinobu Inoue if (dstsock->sin6_scope_id < 0 || 44882cd038dSYoshinobu Inoue if_index < dstsock->sin6_scope_id) { 44982cd038dSYoshinobu Inoue *errorp = ENXIO; /* XXX: better error? */ 45082cd038dSYoshinobu Inoue return(0); 45182cd038dSYoshinobu Inoue } 45282cd038dSYoshinobu Inoue ia6 = in6_ifawithscope(ifindex2ifnet[dstsock->sin6_scope_id], 45382cd038dSYoshinobu Inoue dst); 45482cd038dSYoshinobu Inoue if (ia6 == 0) { 45582cd038dSYoshinobu Inoue *errorp = EADDRNOTAVAIL; 45682cd038dSYoshinobu Inoue return(0); 45782cd038dSYoshinobu Inoue } 45882cd038dSYoshinobu Inoue return(&satosin6(&ia6->ia_addr)->sin6_addr); 45982cd038dSYoshinobu Inoue } 46082cd038dSYoshinobu Inoue 46182cd038dSYoshinobu Inoue /* 46282cd038dSYoshinobu Inoue * If the destination address is a multicast address and 46382cd038dSYoshinobu Inoue * the outgoing interface for the address is specified 46482cd038dSYoshinobu Inoue * by the caller, use an address associated with the interface. 46582cd038dSYoshinobu Inoue * There is a sanity check here; if the destination has node-local 46682cd038dSYoshinobu Inoue * scope, the outgoing interfacde should be a loopback address. 46782cd038dSYoshinobu Inoue * Even if the outgoing interface is not specified, we also 46882cd038dSYoshinobu Inoue * choose a loopback interface as the outgoing interface. 46982cd038dSYoshinobu Inoue */ 47082cd038dSYoshinobu Inoue if (IN6_IS_ADDR_MULTICAST(dst)) { 47182cd038dSYoshinobu Inoue struct ifnet *ifp = mopts ? mopts->im6o_multicast_ifp : NULL; 47282cd038dSYoshinobu Inoue 47382cd038dSYoshinobu Inoue if (ifp == NULL && IN6_IS_ADDR_MC_NODELOCAL(dst)) { 47482cd038dSYoshinobu Inoue ifp = &loif[0]; 47582cd038dSYoshinobu Inoue } 47682cd038dSYoshinobu Inoue 47782cd038dSYoshinobu Inoue if (ifp) { 47882cd038dSYoshinobu Inoue ia6 = in6_ifawithscope(ifp, dst); 47982cd038dSYoshinobu Inoue if (ia6 == 0) { 48082cd038dSYoshinobu Inoue *errorp = EADDRNOTAVAIL; 48182cd038dSYoshinobu Inoue return(0); 48282cd038dSYoshinobu Inoue } 48382cd038dSYoshinobu Inoue return(&ia6->ia_addr.sin6_addr); 48482cd038dSYoshinobu Inoue } 48582cd038dSYoshinobu Inoue } 48682cd038dSYoshinobu Inoue 48782cd038dSYoshinobu Inoue /* 48882cd038dSYoshinobu Inoue * If the next hop address for the packet is specified 48982cd038dSYoshinobu Inoue * by caller, use an address associated with the route 49082cd038dSYoshinobu Inoue * to the next hop. 49182cd038dSYoshinobu Inoue */ 49282cd038dSYoshinobu Inoue { 49382cd038dSYoshinobu Inoue struct sockaddr_in6 *sin6_next; 49482cd038dSYoshinobu Inoue struct rtentry *rt; 49582cd038dSYoshinobu Inoue 49682cd038dSYoshinobu Inoue if (opts && opts->ip6po_nexthop) { 49782cd038dSYoshinobu Inoue sin6_next = satosin6(opts->ip6po_nexthop); 49882cd038dSYoshinobu Inoue rt = nd6_lookup(&sin6_next->sin6_addr, 1, NULL); 49982cd038dSYoshinobu Inoue if (rt) { 50082cd038dSYoshinobu Inoue ia6 = in6_ifawithscope(rt->rt_ifp, dst); 50182cd038dSYoshinobu Inoue if (ia6 == 0) 50282cd038dSYoshinobu Inoue ia6 = ifatoia6(rt->rt_ifa); 50382cd038dSYoshinobu Inoue } 50482cd038dSYoshinobu Inoue if (ia6 == 0) { 50582cd038dSYoshinobu Inoue *errorp = EADDRNOTAVAIL; 50682cd038dSYoshinobu Inoue return(0); 50782cd038dSYoshinobu Inoue } 50882cd038dSYoshinobu Inoue return(&satosin6(&ia6->ia_addr)->sin6_addr); 50982cd038dSYoshinobu Inoue } 51082cd038dSYoshinobu Inoue } 51182cd038dSYoshinobu Inoue 51282cd038dSYoshinobu Inoue /* 51382cd038dSYoshinobu Inoue * If route is known or can be allocated now, 51482cd038dSYoshinobu Inoue * our src addr is taken from the i/f, else punt. 51582cd038dSYoshinobu Inoue */ 51682cd038dSYoshinobu Inoue if (ro) { 51782cd038dSYoshinobu Inoue if (ro->ro_rt && 51882cd038dSYoshinobu Inoue !IN6_ARE_ADDR_EQUAL(&satosin6(&ro->ro_dst)->sin6_addr, dst)) { 51982cd038dSYoshinobu Inoue RTFREE(ro->ro_rt); 52082cd038dSYoshinobu Inoue ro->ro_rt = (struct rtentry *)0; 52182cd038dSYoshinobu Inoue } 52282cd038dSYoshinobu Inoue if (ro->ro_rt == (struct rtentry *)0 || 52382cd038dSYoshinobu Inoue ro->ro_rt->rt_ifp == (struct ifnet *)0) { 52482cd038dSYoshinobu Inoue /* No route yet, so try to acquire one */ 52582cd038dSYoshinobu Inoue bzero(&ro->ro_dst, sizeof(struct sockaddr_in6)); 52682cd038dSYoshinobu Inoue ro->ro_dst.sin6_family = AF_INET6; 52782cd038dSYoshinobu Inoue ro->ro_dst.sin6_len = sizeof(struct sockaddr_in6); 52882cd038dSYoshinobu Inoue ro->ro_dst.sin6_addr = *dst; 52982cd038dSYoshinobu Inoue if (IN6_IS_ADDR_MULTICAST(dst)) { 53082cd038dSYoshinobu Inoue ro->ro_rt = rtalloc1(&((struct route *)ro) 53182cd038dSYoshinobu Inoue ->ro_dst, 0, 0UL); 53282cd038dSYoshinobu Inoue } else { 533ae5bcbffSYoshinobu Inoue rtalloc((struct route *)ro); 53482cd038dSYoshinobu Inoue } 53582cd038dSYoshinobu Inoue } 53682cd038dSYoshinobu Inoue 53782cd038dSYoshinobu Inoue /* 53882cd038dSYoshinobu Inoue * in_pcbconnect() checks out IFF_LOOPBACK to skip using 53982cd038dSYoshinobu Inoue * the address. But we don't know why it does so. 54082cd038dSYoshinobu Inoue * It is necessary to ensure the scope even for lo0 54182cd038dSYoshinobu Inoue * so doesn't check out IFF_LOOPBACK. 54282cd038dSYoshinobu Inoue */ 54382cd038dSYoshinobu Inoue 54482cd038dSYoshinobu Inoue if (ro->ro_rt) { 54582cd038dSYoshinobu Inoue ia6 = in6_ifawithscope(ro->ro_rt->rt_ifa->ifa_ifp, dst); 54682cd038dSYoshinobu Inoue if (ia6 == 0) /* xxx scope error ?*/ 54782cd038dSYoshinobu Inoue ia6 = ifatoia6(ro->ro_rt->rt_ifa); 54882cd038dSYoshinobu Inoue } 54982cd038dSYoshinobu Inoue if (ia6 == 0) { 55082cd038dSYoshinobu Inoue *errorp = EHOSTUNREACH; /* no route */ 55182cd038dSYoshinobu Inoue return(0); 55282cd038dSYoshinobu Inoue } 55382cd038dSYoshinobu Inoue return(&satosin6(&ia6->ia_addr)->sin6_addr); 55482cd038dSYoshinobu Inoue } 55582cd038dSYoshinobu Inoue 55682cd038dSYoshinobu Inoue *errorp = EADDRNOTAVAIL; 55782cd038dSYoshinobu Inoue return(0); 55882cd038dSYoshinobu Inoue } 55982cd038dSYoshinobu Inoue 56082cd038dSYoshinobu Inoue /* 56182cd038dSYoshinobu Inoue * Default hop limit selection. The precedence is as follows: 56282cd038dSYoshinobu Inoue * 1. Hoplimit valued specified via ioctl. 56382cd038dSYoshinobu Inoue * 2. (If the outgoing interface is detected) the current 56482cd038dSYoshinobu Inoue * hop limit of the interface specified by router advertisement. 56582cd038dSYoshinobu Inoue * 3. The system default hoplimit. 56682cd038dSYoshinobu Inoue */ 56782cd038dSYoshinobu Inoue int 56882cd038dSYoshinobu Inoue in6_selecthlim(in6p, ifp) 56982cd038dSYoshinobu Inoue struct in6pcb *in6p; 57082cd038dSYoshinobu Inoue struct ifnet *ifp; 57182cd038dSYoshinobu Inoue { 57282cd038dSYoshinobu Inoue if (in6p && in6p->in6p_hops >= 0) 57382cd038dSYoshinobu Inoue return(in6p->in6p_hops); 57482cd038dSYoshinobu Inoue else if (ifp) 57582cd038dSYoshinobu Inoue return(nd_ifinfo[ifp->if_index].chlim); 57682cd038dSYoshinobu Inoue else 57782cd038dSYoshinobu Inoue return(ip6_defhlim); 57882cd038dSYoshinobu Inoue } 579686cdd19SJun-ichiro itojun Hagino #endif 58082cd038dSYoshinobu Inoue 58182cd038dSYoshinobu Inoue void 58282cd038dSYoshinobu Inoue in6_pcbdisconnect(inp) 58382cd038dSYoshinobu Inoue struct inpcb *inp; 58482cd038dSYoshinobu Inoue { 58582cd038dSYoshinobu Inoue bzero((caddr_t)&inp->in6p_faddr, sizeof(inp->in6p_faddr)); 58682cd038dSYoshinobu Inoue inp->inp_fport = 0; 58782cd038dSYoshinobu Inoue in_pcbrehash(inp); 58882cd038dSYoshinobu Inoue if (inp->inp_socket->so_state & SS_NOFDREF) 58982cd038dSYoshinobu Inoue in6_pcbdetach(inp); 59082cd038dSYoshinobu Inoue } 59182cd038dSYoshinobu Inoue 59282cd038dSYoshinobu Inoue void 59382cd038dSYoshinobu Inoue in6_pcbdetach(inp) 59482cd038dSYoshinobu Inoue struct inpcb *inp; 59582cd038dSYoshinobu Inoue { 59682cd038dSYoshinobu Inoue struct socket *so = inp->inp_socket; 59782cd038dSYoshinobu Inoue struct inpcbinfo *ipi = inp->inp_pcbinfo; 59882cd038dSYoshinobu Inoue 59982cd038dSYoshinobu Inoue #ifdef IPSEC 600333aa64dSBrian Feldman if (inp->in6p_sp != NULL) 60182cd038dSYoshinobu Inoue ipsec6_delete_pcbpolicy(inp); 60282cd038dSYoshinobu Inoue #endif /* IPSEC */ 60382cd038dSYoshinobu Inoue inp->inp_gencnt = ++ipi->ipi_gencnt; 60482cd038dSYoshinobu Inoue in_pcbremlists(inp); 60582cd038dSYoshinobu Inoue sotoinpcb(so) = 0; 60682cd038dSYoshinobu Inoue sofree(so); 60782cd038dSYoshinobu Inoue if (inp->in6p_options) 60882cd038dSYoshinobu Inoue m_freem(inp->in6p_options); 60982cd038dSYoshinobu Inoue if (inp->in6p_outputopts) { 61082cd038dSYoshinobu Inoue if (inp->in6p_outputopts->ip6po_rthdr && 61182cd038dSYoshinobu Inoue inp->in6p_outputopts->ip6po_route.ro_rt) 61282cd038dSYoshinobu Inoue RTFREE(inp->in6p_outputopts->ip6po_route.ro_rt); 61382cd038dSYoshinobu Inoue if (inp->in6p_outputopts->ip6po_m) 61482cd038dSYoshinobu Inoue (void)m_free(inp->in6p_outputopts->ip6po_m); 61582cd038dSYoshinobu Inoue free(inp->in6p_outputopts, M_IP6OPT); 61682cd038dSYoshinobu Inoue } 61782cd038dSYoshinobu Inoue if (inp->in6p_route.ro_rt) 61882cd038dSYoshinobu Inoue rtfree(inp->in6p_route.ro_rt); 61982cd038dSYoshinobu Inoue ip6_freemoptions(inp->in6p_moptions); 620fb59c426SYoshinobu Inoue 621fb59c426SYoshinobu Inoue /* Check and free IPv4 related resources in case of mapped addr */ 622fb59c426SYoshinobu Inoue if (inp->inp_options) 623fb59c426SYoshinobu Inoue (void)m_free(inp->inp_options); 624fb59c426SYoshinobu Inoue ip_freemoptions(inp->inp_moptions); 625fb59c426SYoshinobu Inoue 62682cd038dSYoshinobu Inoue inp->inp_vflag = 0; 627a3ea6d41SDag-Erling Smørgrav zfree(ipi->ipi_zone, inp); 62882cd038dSYoshinobu Inoue } 62982cd038dSYoshinobu Inoue 63082cd038dSYoshinobu Inoue /* 63182cd038dSYoshinobu Inoue * The calling convention of in6_setsockaddr() and in6_setpeeraddr() was 63282cd038dSYoshinobu Inoue * modified to match the pru_sockaddr() and pru_peeraddr() entry points 63382cd038dSYoshinobu Inoue * in struct pr_usrreqs, so that protocols can just reference then directly 63482cd038dSYoshinobu Inoue * without the need for a wrapper function. The socket must have a valid 63582cd038dSYoshinobu Inoue * (i.e., non-nil) PCB, but it should be impossible to get an invalid one 63682cd038dSYoshinobu Inoue * except through a kernel programming error, so it is acceptable to panic 63782cd038dSYoshinobu Inoue * (or in this case trap) if the PCB is invalid. (Actually, we don't trap 63882cd038dSYoshinobu Inoue * because there actually /is/ a programming error somewhere... XXX) 63982cd038dSYoshinobu Inoue */ 64082cd038dSYoshinobu Inoue int 64182cd038dSYoshinobu Inoue in6_setsockaddr(so, nam) 64282cd038dSYoshinobu Inoue struct socket *so; 64382cd038dSYoshinobu Inoue struct sockaddr **nam; 64482cd038dSYoshinobu Inoue { 64582cd038dSYoshinobu Inoue int s; 64682cd038dSYoshinobu Inoue register struct inpcb *inp; 64782cd038dSYoshinobu Inoue register struct sockaddr_in6 *sin6; 64882cd038dSYoshinobu Inoue 64982cd038dSYoshinobu Inoue /* 65082cd038dSYoshinobu Inoue * Do the malloc first in case it blocks. 65182cd038dSYoshinobu Inoue */ 65282cd038dSYoshinobu Inoue MALLOC(sin6, struct sockaddr_in6 *, sizeof *sin6, M_SONAME, M_WAITOK); 65382cd038dSYoshinobu Inoue bzero(sin6, sizeof *sin6); 65482cd038dSYoshinobu Inoue sin6->sin6_family = AF_INET6; 65582cd038dSYoshinobu Inoue sin6->sin6_len = sizeof(*sin6); 65682cd038dSYoshinobu Inoue 65782cd038dSYoshinobu Inoue s = splnet(); 65882cd038dSYoshinobu Inoue inp = sotoinpcb(so); 65982cd038dSYoshinobu Inoue if (!inp) { 66082cd038dSYoshinobu Inoue splx(s); 66182cd038dSYoshinobu Inoue free(sin6, M_SONAME); 66282cd038dSYoshinobu Inoue return EINVAL; 66382cd038dSYoshinobu Inoue } 66482cd038dSYoshinobu Inoue sin6->sin6_port = inp->inp_lport; 66582cd038dSYoshinobu Inoue sin6->sin6_addr = inp->in6p_laddr; 66682cd038dSYoshinobu Inoue splx(s); 66782cd038dSYoshinobu Inoue if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) 66882cd038dSYoshinobu Inoue sin6->sin6_scope_id = ntohs(sin6->sin6_addr.s6_addr16[1]); 66982cd038dSYoshinobu Inoue else 67082cd038dSYoshinobu Inoue sin6->sin6_scope_id = 0; /*XXX*/ 67182cd038dSYoshinobu Inoue if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) 67282cd038dSYoshinobu Inoue sin6->sin6_addr.s6_addr16[1] = 0; 67382cd038dSYoshinobu Inoue 67482cd038dSYoshinobu Inoue *nam = (struct sockaddr *)sin6; 67582cd038dSYoshinobu Inoue return 0; 67682cd038dSYoshinobu Inoue } 67782cd038dSYoshinobu Inoue 67882cd038dSYoshinobu Inoue int 67982cd038dSYoshinobu Inoue in6_setpeeraddr(so, nam) 68082cd038dSYoshinobu Inoue struct socket *so; 68182cd038dSYoshinobu Inoue struct sockaddr **nam; 68282cd038dSYoshinobu Inoue { 68382cd038dSYoshinobu Inoue int s; 68482cd038dSYoshinobu Inoue struct inpcb *inp; 68582cd038dSYoshinobu Inoue register struct sockaddr_in6 *sin6; 68682cd038dSYoshinobu Inoue 68782cd038dSYoshinobu Inoue /* 68882cd038dSYoshinobu Inoue * Do the malloc first in case it blocks. 68982cd038dSYoshinobu Inoue */ 69082cd038dSYoshinobu Inoue MALLOC(sin6, struct sockaddr_in6 *, sizeof(*sin6), M_SONAME, M_WAITOK); 69182cd038dSYoshinobu Inoue bzero((caddr_t)sin6, sizeof (*sin6)); 69282cd038dSYoshinobu Inoue sin6->sin6_family = AF_INET6; 69382cd038dSYoshinobu Inoue sin6->sin6_len = sizeof(struct sockaddr_in6); 69482cd038dSYoshinobu Inoue 69582cd038dSYoshinobu Inoue s = splnet(); 69682cd038dSYoshinobu Inoue inp = sotoinpcb(so); 69782cd038dSYoshinobu Inoue if (!inp) { 69882cd038dSYoshinobu Inoue splx(s); 69982cd038dSYoshinobu Inoue free(sin6, M_SONAME); 70082cd038dSYoshinobu Inoue return EINVAL; 70182cd038dSYoshinobu Inoue } 70282cd038dSYoshinobu Inoue sin6->sin6_port = inp->inp_fport; 70382cd038dSYoshinobu Inoue sin6->sin6_addr = inp->in6p_faddr; 70482cd038dSYoshinobu Inoue splx(s); 70582cd038dSYoshinobu Inoue if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) 70682cd038dSYoshinobu Inoue sin6->sin6_scope_id = ntohs(sin6->sin6_addr.s6_addr16[1]); 70782cd038dSYoshinobu Inoue else 70882cd038dSYoshinobu Inoue sin6->sin6_scope_id = 0; /*XXX*/ 70982cd038dSYoshinobu Inoue if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) 71082cd038dSYoshinobu Inoue sin6->sin6_addr.s6_addr16[1] = 0; 71182cd038dSYoshinobu Inoue 71282cd038dSYoshinobu Inoue *nam = (struct sockaddr *)sin6; 71382cd038dSYoshinobu Inoue return 0; 71482cd038dSYoshinobu Inoue } 71582cd038dSYoshinobu Inoue 71682cd038dSYoshinobu Inoue int 71782cd038dSYoshinobu Inoue in6_mapped_sockaddr(struct socket *so, struct sockaddr **nam) 71882cd038dSYoshinobu Inoue { 71982cd038dSYoshinobu Inoue struct inpcb *inp = sotoinpcb(so); 72082cd038dSYoshinobu Inoue int error; 72182cd038dSYoshinobu Inoue 72282cd038dSYoshinobu Inoue if (inp == NULL) 72382cd038dSYoshinobu Inoue return EINVAL; 72482cd038dSYoshinobu Inoue if (inp->inp_vflag & INP_IPV4) { 72582cd038dSYoshinobu Inoue error = in_setsockaddr(so, nam); 726369dc8ceSEivind Eklund if (error == 0) 72782cd038dSYoshinobu Inoue in6_sin_2_v4mapsin6_in_sock(nam); 72882cd038dSYoshinobu Inoue } else 72982cd038dSYoshinobu Inoue error = in6_setsockaddr(so, nam); 73082cd038dSYoshinobu Inoue 73182cd038dSYoshinobu Inoue return error; 73282cd038dSYoshinobu Inoue } 73382cd038dSYoshinobu Inoue 73482cd038dSYoshinobu Inoue int 73582cd038dSYoshinobu Inoue in6_mapped_peeraddr(struct socket *so, struct sockaddr **nam) 73682cd038dSYoshinobu Inoue { 73782cd038dSYoshinobu Inoue struct inpcb *inp = sotoinpcb(so); 73882cd038dSYoshinobu Inoue int error; 73982cd038dSYoshinobu Inoue 74082cd038dSYoshinobu Inoue if (inp == NULL) 74182cd038dSYoshinobu Inoue return EINVAL; 74282cd038dSYoshinobu Inoue if (inp->inp_vflag & INP_IPV4) { 74382cd038dSYoshinobu Inoue error = in_setpeeraddr(so, nam); 744369dc8ceSEivind Eklund if (error == 0) 74582cd038dSYoshinobu Inoue in6_sin_2_v4mapsin6_in_sock(nam); 74682cd038dSYoshinobu Inoue } else 74782cd038dSYoshinobu Inoue error = in6_setpeeraddr(so, nam); 74882cd038dSYoshinobu Inoue 74982cd038dSYoshinobu Inoue return error; 75082cd038dSYoshinobu Inoue } 75182cd038dSYoshinobu Inoue 75282cd038dSYoshinobu Inoue /* 75382cd038dSYoshinobu Inoue * Pass some notification to all connections of a protocol 75482cd038dSYoshinobu Inoue * associated with address dst. The local address and/or port numbers 75582cd038dSYoshinobu Inoue * may be specified to limit the search. The "usual action" will be 75682cd038dSYoshinobu Inoue * taken, depending on the ctlinput cmd. The caller must filter any 75782cd038dSYoshinobu Inoue * cmds that are uninteresting (e.g., no error in the map). 75882cd038dSYoshinobu Inoue * Call the protocol specific routine (if any) to report 75982cd038dSYoshinobu Inoue * any errors for each matching socket. 76082cd038dSYoshinobu Inoue * 76182cd038dSYoshinobu Inoue * Must be called at splnet. 76282cd038dSYoshinobu Inoue */ 76382cd038dSYoshinobu Inoue void 76482cd038dSYoshinobu Inoue in6_pcbnotify(head, dst, fport_arg, laddr6, lport_arg, cmd, notify) 76582cd038dSYoshinobu Inoue struct inpcbhead *head; 76682cd038dSYoshinobu Inoue struct sockaddr *dst; 76782cd038dSYoshinobu Inoue u_int fport_arg, lport_arg; 76882cd038dSYoshinobu Inoue struct in6_addr *laddr6; 76982cd038dSYoshinobu Inoue int cmd; 77082cd038dSYoshinobu Inoue void (*notify) __P((struct inpcb *, int)); 77182cd038dSYoshinobu Inoue { 772686cdd19SJun-ichiro itojun Hagino struct inpcb *inp, *ninp; 77382cd038dSYoshinobu Inoue struct in6_addr faddr6; 77482cd038dSYoshinobu Inoue u_short fport = fport_arg, lport = lport_arg; 77582cd038dSYoshinobu Inoue int errno, s; 776686cdd19SJun-ichiro itojun Hagino int do_rtchange = (notify == in6_rtchange); 77782cd038dSYoshinobu Inoue 77882cd038dSYoshinobu Inoue if ((unsigned)cmd > PRC_NCMDS || dst->sa_family != AF_INET6) 77982cd038dSYoshinobu Inoue return; 78082cd038dSYoshinobu Inoue faddr6 = ((struct sockaddr_in6 *)dst)->sin6_addr; 78182cd038dSYoshinobu Inoue if (IN6_IS_ADDR_UNSPECIFIED(&faddr6)) 78282cd038dSYoshinobu Inoue return; 78382cd038dSYoshinobu Inoue 78482cd038dSYoshinobu Inoue /* 78582cd038dSYoshinobu Inoue * Redirects go to all references to the destination, 786686cdd19SJun-ichiro itojun Hagino * and use in6_rtchange to invalidate the route cache. 787686cdd19SJun-ichiro itojun Hagino * Dead host indications: also use in6_rtchange to invalidate 788686cdd19SJun-ichiro itojun Hagino * the cache, and deliver the error to all the sockets. 78982cd038dSYoshinobu Inoue * Otherwise, if we have knowledge of the local port and address, 79082cd038dSYoshinobu Inoue * deliver only to that socket. 79182cd038dSYoshinobu Inoue */ 79282cd038dSYoshinobu Inoue if (PRC_IS_REDIRECT(cmd) || cmd == PRC_HOSTDEAD) { 79382cd038dSYoshinobu Inoue fport = 0; 79482cd038dSYoshinobu Inoue lport = 0; 79582cd038dSYoshinobu Inoue bzero((caddr_t)laddr6, sizeof(*laddr6)); 796686cdd19SJun-ichiro itojun Hagino 797686cdd19SJun-ichiro itojun Hagino do_rtchange = 1; 79882cd038dSYoshinobu Inoue } 79982cd038dSYoshinobu Inoue errno = inet6ctlerrmap[cmd]; 80082cd038dSYoshinobu Inoue s = splnet(); 801686cdd19SJun-ichiro itojun Hagino for (inp = LIST_FIRST(head); inp != NULL; inp = ninp) { 802686cdd19SJun-ichiro itojun Hagino ninp = LIST_NEXT(inp, inp_list); 803686cdd19SJun-ichiro itojun Hagino 804686cdd19SJun-ichiro itojun Hagino if ((inp->inp_vflag & INP_IPV6) == NULL) 80582cd038dSYoshinobu Inoue continue; 806686cdd19SJun-ichiro itojun Hagino 807686cdd19SJun-ichiro itojun Hagino if (do_rtchange) { 808686cdd19SJun-ichiro itojun Hagino /* 809686cdd19SJun-ichiro itojun Hagino * Since a non-connected PCB might have a cached route, 810686cdd19SJun-ichiro itojun Hagino * we always call in6_rtchange without matching 811686cdd19SJun-ichiro itojun Hagino * the PCB to the src/dst pair. 812686cdd19SJun-ichiro itojun Hagino * 813686cdd19SJun-ichiro itojun Hagino * XXX: we assume in6_rtchange does not free the PCB. 814686cdd19SJun-ichiro itojun Hagino */ 815686cdd19SJun-ichiro itojun Hagino if (IN6_ARE_ADDR_EQUAL(&inp->in6p_route.ro_dst.sin6_addr, 816686cdd19SJun-ichiro itojun Hagino &faddr6)) 817686cdd19SJun-ichiro itojun Hagino in6_rtchange(inp, errno); 818686cdd19SJun-ichiro itojun Hagino 819686cdd19SJun-ichiro itojun Hagino if (notify == in6_rtchange) 820686cdd19SJun-ichiro itojun Hagino continue; /* there's nothing to do any more */ 82182cd038dSYoshinobu Inoue } 822686cdd19SJun-ichiro itojun Hagino 82382cd038dSYoshinobu Inoue if (!IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr, &faddr6) || 82482cd038dSYoshinobu Inoue inp->inp_socket == 0 || 82582cd038dSYoshinobu Inoue (lport && inp->inp_lport != lport) || 82682cd038dSYoshinobu Inoue (!IN6_IS_ADDR_UNSPECIFIED(laddr6) && 82782cd038dSYoshinobu Inoue !IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr6)) || 828686cdd19SJun-ichiro itojun Hagino (fport && inp->inp_fport != fport)) 82982cd038dSYoshinobu Inoue continue; 830686cdd19SJun-ichiro itojun Hagino 83182cd038dSYoshinobu Inoue if (notify) 832686cdd19SJun-ichiro itojun Hagino (*notify)(inp, errno); 83382cd038dSYoshinobu Inoue } 83482cd038dSYoshinobu Inoue splx(s); 83582cd038dSYoshinobu Inoue } 83682cd038dSYoshinobu Inoue 83782cd038dSYoshinobu Inoue /* 83882cd038dSYoshinobu Inoue * Lookup a PCB based on the local address and port. 83982cd038dSYoshinobu Inoue */ 84082cd038dSYoshinobu Inoue struct inpcb * 84182cd038dSYoshinobu Inoue in6_pcblookup_local(pcbinfo, laddr, lport_arg, wild_okay) 84282cd038dSYoshinobu Inoue struct inpcbinfo *pcbinfo; 84382cd038dSYoshinobu Inoue struct in6_addr *laddr; 84482cd038dSYoshinobu Inoue u_int lport_arg; 84582cd038dSYoshinobu Inoue int wild_okay; 84682cd038dSYoshinobu Inoue { 84782cd038dSYoshinobu Inoue register struct inpcb *inp; 84882cd038dSYoshinobu Inoue int matchwild = 3, wildcard; 84982cd038dSYoshinobu Inoue u_short lport = lport_arg; 85082cd038dSYoshinobu Inoue 85182cd038dSYoshinobu Inoue if (!wild_okay) { 85282cd038dSYoshinobu Inoue struct inpcbhead *head; 85382cd038dSYoshinobu Inoue /* 85482cd038dSYoshinobu Inoue * Look for an unconnected (wildcard foreign addr) PCB that 85582cd038dSYoshinobu Inoue * matches the local address and port we're looking for. 85682cd038dSYoshinobu Inoue */ 85782cd038dSYoshinobu Inoue head = &pcbinfo->hashbase[INP_PCBHASH(INADDR_ANY, lport, 0, 85882cd038dSYoshinobu Inoue pcbinfo->hashmask)]; 85982cd038dSYoshinobu Inoue LIST_FOREACH(inp, head, inp_hash) { 860369dc8ceSEivind Eklund if ((inp->inp_vflag & INP_IPV6) == 0) 86182cd038dSYoshinobu Inoue continue; 86282cd038dSYoshinobu Inoue if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) && 86382cd038dSYoshinobu Inoue IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr) && 86482cd038dSYoshinobu Inoue inp->inp_lport == lport) { 86582cd038dSYoshinobu Inoue /* 86682cd038dSYoshinobu Inoue * Found. 86782cd038dSYoshinobu Inoue */ 86882cd038dSYoshinobu Inoue return (inp); 86982cd038dSYoshinobu Inoue } 87082cd038dSYoshinobu Inoue } 87182cd038dSYoshinobu Inoue /* 87282cd038dSYoshinobu Inoue * Not found. 87382cd038dSYoshinobu Inoue */ 87482cd038dSYoshinobu Inoue return (NULL); 87582cd038dSYoshinobu Inoue } else { 87682cd038dSYoshinobu Inoue struct inpcbporthead *porthash; 87782cd038dSYoshinobu Inoue struct inpcbport *phd; 87882cd038dSYoshinobu Inoue struct inpcb *match = NULL; 87982cd038dSYoshinobu Inoue /* 88082cd038dSYoshinobu Inoue * Best fit PCB lookup. 88182cd038dSYoshinobu Inoue * 88282cd038dSYoshinobu Inoue * First see if this local port is in use by looking on the 88382cd038dSYoshinobu Inoue * port hash list. 88482cd038dSYoshinobu Inoue */ 88582cd038dSYoshinobu Inoue porthash = &pcbinfo->porthashbase[INP_PCBPORTHASH(lport, 88682cd038dSYoshinobu Inoue pcbinfo->porthashmask)]; 88782cd038dSYoshinobu Inoue LIST_FOREACH(phd, porthash, phd_hash) { 88882cd038dSYoshinobu Inoue if (phd->phd_port == lport) 88982cd038dSYoshinobu Inoue break; 89082cd038dSYoshinobu Inoue } 89182cd038dSYoshinobu Inoue if (phd != NULL) { 89282cd038dSYoshinobu Inoue /* 89382cd038dSYoshinobu Inoue * Port is in use by one or more PCBs. Look for best 89482cd038dSYoshinobu Inoue * fit. 89582cd038dSYoshinobu Inoue */ 89682cd038dSYoshinobu Inoue LIST_FOREACH(inp, &phd->phd_pcblist, inp_portlist) { 89782cd038dSYoshinobu Inoue wildcard = 0; 898369dc8ceSEivind Eklund if ((inp->inp_vflag & INP_IPV6) == 0) 89982cd038dSYoshinobu Inoue continue; 90082cd038dSYoshinobu Inoue if (!IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr)) 90182cd038dSYoshinobu Inoue wildcard++; 90282cd038dSYoshinobu Inoue if (!IN6_IS_ADDR_UNSPECIFIED( 90382cd038dSYoshinobu Inoue &inp->in6p_laddr)) { 90482cd038dSYoshinobu Inoue if (IN6_IS_ADDR_UNSPECIFIED(laddr)) 90582cd038dSYoshinobu Inoue wildcard++; 90682cd038dSYoshinobu Inoue else if (!IN6_ARE_ADDR_EQUAL( 90782cd038dSYoshinobu Inoue &inp->in6p_laddr, laddr)) 90882cd038dSYoshinobu Inoue continue; 90982cd038dSYoshinobu Inoue } else { 91082cd038dSYoshinobu Inoue if (!IN6_IS_ADDR_UNSPECIFIED(laddr)) 91182cd038dSYoshinobu Inoue wildcard++; 91282cd038dSYoshinobu Inoue } 91382cd038dSYoshinobu Inoue if (wildcard < matchwild) { 91482cd038dSYoshinobu Inoue match = inp; 91582cd038dSYoshinobu Inoue matchwild = wildcard; 91682cd038dSYoshinobu Inoue if (matchwild == 0) { 91782cd038dSYoshinobu Inoue break; 91882cd038dSYoshinobu Inoue } 91982cd038dSYoshinobu Inoue } 92082cd038dSYoshinobu Inoue } 92182cd038dSYoshinobu Inoue } 92282cd038dSYoshinobu Inoue return (match); 92382cd038dSYoshinobu Inoue } 92482cd038dSYoshinobu Inoue } 92582cd038dSYoshinobu Inoue 92682cd038dSYoshinobu Inoue /* 92782cd038dSYoshinobu Inoue * Check for alternatives when higher level complains 92882cd038dSYoshinobu Inoue * about service problems. For now, invalidate cached 92982cd038dSYoshinobu Inoue * routing information. If the route was created dynamically 93082cd038dSYoshinobu Inoue * (by a redirect), time to try a default gateway again. 93182cd038dSYoshinobu Inoue */ 93282cd038dSYoshinobu Inoue void 93382cd038dSYoshinobu Inoue in6_losing(in6p) 93482cd038dSYoshinobu Inoue struct inpcb *in6p; 93582cd038dSYoshinobu Inoue { 93682cd038dSYoshinobu Inoue struct rtentry *rt; 93782cd038dSYoshinobu Inoue struct rt_addrinfo info; 93882cd038dSYoshinobu Inoue 93982cd038dSYoshinobu Inoue if ((rt = in6p->in6p_route.ro_rt) != NULL) { 94082cd038dSYoshinobu Inoue in6p->in6p_route.ro_rt = 0; 94182cd038dSYoshinobu Inoue bzero((caddr_t)&info, sizeof(info)); 94282cd038dSYoshinobu Inoue info.rti_info[RTAX_DST] = 94382cd038dSYoshinobu Inoue (struct sockaddr *)&in6p->in6p_route.ro_dst; 94482cd038dSYoshinobu Inoue info.rti_info[RTAX_GATEWAY] = rt->rt_gateway; 94582cd038dSYoshinobu Inoue info.rti_info[RTAX_NETMASK] = rt_mask(rt); 94682cd038dSYoshinobu Inoue rt_missmsg(RTM_LOSING, &info, rt->rt_flags, 0); 94782cd038dSYoshinobu Inoue if (rt->rt_flags & RTF_DYNAMIC) 94882cd038dSYoshinobu Inoue (void)rtrequest(RTM_DELETE, rt_key(rt), 94982cd038dSYoshinobu Inoue rt->rt_gateway, rt_mask(rt), rt->rt_flags, 95082cd038dSYoshinobu Inoue (struct rtentry **)0); 95182cd038dSYoshinobu Inoue else 95282cd038dSYoshinobu Inoue /* 95382cd038dSYoshinobu Inoue * A new route can be allocated 95482cd038dSYoshinobu Inoue * the next time output is attempted. 95582cd038dSYoshinobu Inoue */ 95682cd038dSYoshinobu Inoue rtfree(rt); 95782cd038dSYoshinobu Inoue } 95882cd038dSYoshinobu Inoue } 95982cd038dSYoshinobu Inoue 96082cd038dSYoshinobu Inoue /* 96182cd038dSYoshinobu Inoue * After a routing change, flush old routing 96282cd038dSYoshinobu Inoue * and allocate a (hopefully) better one. 96382cd038dSYoshinobu Inoue */ 96482cd038dSYoshinobu Inoue void 96582cd038dSYoshinobu Inoue in6_rtchange(inp, errno) 96682cd038dSYoshinobu Inoue struct inpcb *inp; 96782cd038dSYoshinobu Inoue int errno; 96882cd038dSYoshinobu Inoue { 96982cd038dSYoshinobu Inoue if (inp->in6p_route.ro_rt) { 97082cd038dSYoshinobu Inoue rtfree(inp->in6p_route.ro_rt); 97182cd038dSYoshinobu Inoue inp->in6p_route.ro_rt = 0; 97282cd038dSYoshinobu Inoue /* 97382cd038dSYoshinobu Inoue * A new route can be allocated the next time 97482cd038dSYoshinobu Inoue * output is attempted. 97582cd038dSYoshinobu Inoue */ 97682cd038dSYoshinobu Inoue } 97782cd038dSYoshinobu Inoue } 97882cd038dSYoshinobu Inoue 97982cd038dSYoshinobu Inoue /* 98082cd038dSYoshinobu Inoue * Lookup PCB in hash list. 98182cd038dSYoshinobu Inoue */ 98282cd038dSYoshinobu Inoue struct inpcb * 98382cd038dSYoshinobu Inoue in6_pcblookup_hash(pcbinfo, faddr, fport_arg, laddr, lport_arg, wildcard, ifp) 98482cd038dSYoshinobu Inoue struct inpcbinfo *pcbinfo; 98582cd038dSYoshinobu Inoue struct in6_addr *faddr, *laddr; 98682cd038dSYoshinobu Inoue u_int fport_arg, lport_arg; 98782cd038dSYoshinobu Inoue int wildcard; 98882cd038dSYoshinobu Inoue struct ifnet *ifp; 98982cd038dSYoshinobu Inoue { 99082cd038dSYoshinobu Inoue struct inpcbhead *head; 99182cd038dSYoshinobu Inoue register struct inpcb *inp; 99282cd038dSYoshinobu Inoue u_short fport = fport_arg, lport = lport_arg; 99382cd038dSYoshinobu Inoue 99482cd038dSYoshinobu Inoue /* 99582cd038dSYoshinobu Inoue * First look for an exact match. 99682cd038dSYoshinobu Inoue */ 99782cd038dSYoshinobu Inoue head = &pcbinfo->hashbase[INP_PCBHASH(faddr->s6_addr32[3] /* XXX */, 99882cd038dSYoshinobu Inoue lport, fport, 99982cd038dSYoshinobu Inoue pcbinfo->hashmask)]; 1000cfa1ca9dSYoshinobu Inoue LIST_FOREACH(inp, head, inp_hash) { 1001369dc8ceSEivind Eklund if ((inp->inp_vflag & INP_IPV6) == 0) 100282cd038dSYoshinobu Inoue continue; 100382cd038dSYoshinobu Inoue if (IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr, faddr) && 100482cd038dSYoshinobu Inoue IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr) && 100582cd038dSYoshinobu Inoue inp->inp_fport == fport && 100682cd038dSYoshinobu Inoue inp->inp_lport == lport) { 100782cd038dSYoshinobu Inoue /* 100882cd038dSYoshinobu Inoue * Found. 100982cd038dSYoshinobu Inoue */ 101082cd038dSYoshinobu Inoue return (inp); 101182cd038dSYoshinobu Inoue } 101282cd038dSYoshinobu Inoue } 101382cd038dSYoshinobu Inoue if (wildcard) { 101482cd038dSYoshinobu Inoue struct inpcb *local_wild = NULL; 101582cd038dSYoshinobu Inoue 101682cd038dSYoshinobu Inoue head = &pcbinfo->hashbase[INP_PCBHASH(INADDR_ANY, lport, 0, 101782cd038dSYoshinobu Inoue pcbinfo->hashmask)]; 1018cfa1ca9dSYoshinobu Inoue LIST_FOREACH(inp, head, inp_hash) { 1019369dc8ceSEivind Eklund if ((inp->inp_vflag & INP_IPV6) == 0) 102082cd038dSYoshinobu Inoue continue; 102182cd038dSYoshinobu Inoue if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) && 102282cd038dSYoshinobu Inoue inp->inp_lport == lport) { 102382cd038dSYoshinobu Inoue #if defined(NFAITH) && NFAITH > 0 102482cd038dSYoshinobu Inoue if (ifp && ifp->if_type == IFT_FAITH && 102582cd038dSYoshinobu Inoue (inp->inp_flags & INP_FAITH) == 0) 102682cd038dSYoshinobu Inoue continue; 102782cd038dSYoshinobu Inoue #endif 102882cd038dSYoshinobu Inoue if (IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, 102982cd038dSYoshinobu Inoue laddr)) 103082cd038dSYoshinobu Inoue return (inp); 103182cd038dSYoshinobu Inoue else if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) 103282cd038dSYoshinobu Inoue local_wild = inp; 103382cd038dSYoshinobu Inoue } 103482cd038dSYoshinobu Inoue } 103582cd038dSYoshinobu Inoue return (local_wild); 103682cd038dSYoshinobu Inoue } 103782cd038dSYoshinobu Inoue 103882cd038dSYoshinobu Inoue /* 103982cd038dSYoshinobu Inoue * Not found. 104082cd038dSYoshinobu Inoue */ 104182cd038dSYoshinobu Inoue return (NULL); 104282cd038dSYoshinobu Inoue } 104382cd038dSYoshinobu Inoue 104482cd038dSYoshinobu Inoue void 104582cd038dSYoshinobu Inoue init_sin6(struct sockaddr_in6 *sin6, struct mbuf *m) 104682cd038dSYoshinobu Inoue { 104782cd038dSYoshinobu Inoue struct ip6_hdr *ip; 104882cd038dSYoshinobu Inoue 104982cd038dSYoshinobu Inoue ip = mtod(m, struct ip6_hdr *); 105082cd038dSYoshinobu Inoue bzero(sin6, sizeof(*sin6)); 105182cd038dSYoshinobu Inoue sin6->sin6_len = sizeof(*sin6); 105282cd038dSYoshinobu Inoue sin6->sin6_family = AF_INET6; 105382cd038dSYoshinobu Inoue sin6->sin6_addr = ip->ip6_src; 105482cd038dSYoshinobu Inoue if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) 105582cd038dSYoshinobu Inoue sin6->sin6_addr.s6_addr16[1] = 0; 105682cd038dSYoshinobu Inoue sin6->sin6_scope_id = 105782cd038dSYoshinobu Inoue (m->m_pkthdr.rcvif && IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) 105882cd038dSYoshinobu Inoue ? m->m_pkthdr.rcvif->if_index : 0; 105982cd038dSYoshinobu Inoue 106082cd038dSYoshinobu Inoue return; 106182cd038dSYoshinobu Inoue } 1062