in6_pcb.c revision 222691
1139826Simp/*- 253541Sshin * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 3222488Srwatson * Copyright (c) 2010-2011 Juniper Networks, Inc. 453541Sshin * All rights reserved. 553541Sshin * 6222488Srwatson * Portions of this software were developed by Robert N. M. Watson under 7222488Srwatson * contract to Juniper Networks, Inc. 8222488Srwatson * 953541Sshin * Redistribution and use in source and binary forms, with or without 1053541Sshin * modification, are permitted provided that the following conditions 1153541Sshin * are met: 1253541Sshin * 1. Redistributions of source code must retain the above copyright 1353541Sshin * notice, this list of conditions and the following disclaimer. 1453541Sshin * 2. Redistributions in binary form must reproduce the above copyright 1553541Sshin * notice, this list of conditions and the following disclaimer in the 1653541Sshin * documentation and/or other materials provided with the distribution. 1753541Sshin * 3. Neither the name of the project nor the names of its contributors 1853541Sshin * may be used to endorse or promote products derived from this software 1953541Sshin * without specific prior written permission. 2053541Sshin * 2153541Sshin * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 2253541Sshin * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2353541Sshin * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2453541Sshin * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 2553541Sshin * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2653541Sshin * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2753541Sshin * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2853541Sshin * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2953541Sshin * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3053541Sshin * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3153541Sshin * SUCH DAMAGE. 3253541Sshin * 33174510Sobrien * $KAME: in6_pcb.c,v 1.31 2001/05/21 05:45:10 jinmei Exp $ 3453541Sshin */ 3553541Sshin 36139826Simp/*- 3753541Sshin * Copyright (c) 1982, 1986, 1991, 1993 3853541Sshin * The Regents of the University of California. All rights reserved. 3953541Sshin * 4053541Sshin * Redistribution and use in source and binary forms, with or without 4153541Sshin * modification, are permitted provided that the following conditions 4253541Sshin * are met: 4353541Sshin * 1. Redistributions of source code must retain the above copyright 4453541Sshin * notice, this list of conditions and the following disclaimer. 4553541Sshin * 2. Redistributions in binary form must reproduce the above copyright 4653541Sshin * notice, this list of conditions and the following disclaimer in the 4753541Sshin * documentation and/or other materials provided with the distribution. 4853541Sshin * 4. Neither the name of the University nor the names of its contributors 4953541Sshin * may be used to endorse or promote products derived from this software 5053541Sshin * without specific prior written permission. 5153541Sshin * 5253541Sshin * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 5353541Sshin * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 5453541Sshin * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 5553541Sshin * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 5653541Sshin * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 5753541Sshin * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 5853541Sshin * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 5953541Sshin * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 6053541Sshin * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 6153541Sshin * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 6253541Sshin * SUCH DAMAGE. 6353541Sshin * 6453541Sshin * @(#)in_pcb.c 8.2 (Berkeley) 1/4/94 6553541Sshin */ 6653541Sshin 67174510Sobrien#include <sys/cdefs.h> 68174510Sobrien__FBSDID("$FreeBSD: head/sys/netinet6/in6_pcb.c 222691 2011-06-04 16:33:06Z rwatson $"); 69174510Sobrien 7078064Sume#include "opt_inet.h" 7178064Sume#include "opt_inet6.h" 7255009Sshin#include "opt_ipsec.h" 7353541Sshin 7453541Sshin#include <sys/param.h> 7553541Sshin#include <sys/systm.h> 7653541Sshin#include <sys/malloc.h> 7753541Sshin#include <sys/mbuf.h> 7855679Sshin#include <sys/domain.h> 7953541Sshin#include <sys/protosw.h> 8053541Sshin#include <sys/socket.h> 8153541Sshin#include <sys/socketvar.h> 8253541Sshin#include <sys/sockio.h> 8353541Sshin#include <sys/errno.h> 8453541Sshin#include <sys/time.h> 85164033Srwatson#include <sys/priv.h> 8653541Sshin#include <sys/proc.h> 8753541Sshin#include <sys/jail.h> 8853541Sshin 8992767Sjeff#include <vm/uma.h> 9053541Sshin 9153541Sshin#include <net/if.h> 9253541Sshin#include <net/if_types.h> 9353541Sshin#include <net/route.h> 9453541Sshin 9553541Sshin#include <netinet/in.h> 9653541Sshin#include <netinet/in_var.h> 9753541Sshin#include <netinet/in_systm.h> 9898102Shsu#include <netinet/tcp_var.h> 9962587Sitojun#include <netinet/ip6.h> 10055679Sshin#include <netinet/ip_var.h> 101181887Sjulian 10253541Sshin#include <netinet6/ip6_var.h> 10353541Sshin#include <netinet6/nd6.h> 10453541Sshin#include <netinet/in_pcb.h> 10553541Sshin#include <netinet6/in6_pcb.h> 106148385Sume#include <netinet6/scope6_var.h> 10753541Sshin 10853541Sshinstruct in6_addr zeroin6_addr; 10953541Sshin 11053541Sshinint 111171259Sdelphijin6_pcbbind(register struct inpcb *inp, struct sockaddr *nam, 112171259Sdelphij struct ucred *cred) 11353541Sshin{ 11453541Sshin struct socket *so = inp->inp_socket; 11553541Sshin struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)NULL; 11653541Sshin struct inpcbinfo *pcbinfo = inp->inp_pcbinfo; 11753541Sshin u_short lport = 0; 118222215Srwatson int error, lookupflags = 0; 119222215Srwatson int reuseport = (so->so_options & SO_REUSEPORT); 12053541Sshin 121178285Srwatson INP_WLOCK_ASSERT(inp); 122222488Srwatson INP_HASH_WLOCK_ASSERT(pcbinfo); 123132714Srwatson 124194907Srwatson if (TAILQ_EMPTY(&V_in6_ifaddrhead)) /* XXX broken! */ 12553541Sshin return (EADDRNOTAVAIL); 12653541Sshin if (inp->inp_lport || !IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) 127120856Sume return (EINVAL); 12853541Sshin if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT)) == 0) 129222215Srwatson lookupflags = INPLOOKUP_WILDCARD; 130188148Sjamie if (nam == NULL) { 131188148Sjamie if ((error = prison_local_ip6(cred, &inp->in6p_laddr, 132188148Sjamie ((inp->inp_flags & IN6P_IPV6_V6ONLY) != 0))) != 0) 133188148Sjamie return (error); 134188148Sjamie } else { 13553541Sshin sin6 = (struct sockaddr_in6 *)nam; 13653541Sshin if (nam->sa_len != sizeof(*sin6)) 137120856Sume return (EINVAL); 13853541Sshin /* 13953541Sshin * family check. 14053541Sshin */ 14153541Sshin if (nam->sa_family != AF_INET6) 142120856Sume return (EAFNOSUPPORT); 14353541Sshin 144181803Sbz if ((error = sa6_embedscope(sin6, V_ip6_use_defzone)) != 0) 145148385Sume return(error); 14653541Sshin 147188144Sjamie if ((error = prison_local_ip6(cred, &sin6->sin6_addr, 148188144Sjamie ((inp->inp_flags & IN6P_IPV6_V6ONLY) != 0))) != 0) 149188144Sjamie return (error); 150185435Sbz 15153541Sshin lport = sin6->sin6_port; 15253541Sshin if (IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) { 15353541Sshin /* 15453541Sshin * Treat SO_REUSEADDR as SO_REUSEPORT for multicast; 15553541Sshin * allow compepte duplication of binding if 15653541Sshin * SO_REUSEPORT is set, or if SO_REUSEADDR is set 15753541Sshin * and a multicast address is bound on both 15853541Sshin * new and duplicated sockets. 15953541Sshin */ 16053541Sshin if (so->so_options & SO_REUSEADDR) 16153541Sshin reuseport = SO_REUSEADDR|SO_REUSEPORT; 16253541Sshin } else if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 163194760Srwatson struct ifaddr *ifa; 16453541Sshin 16553541Sshin sin6->sin6_port = 0; /* yech... */ 166194760Srwatson if ((ifa = ifa_ifwithaddr((struct sockaddr *)sin6)) == 167194760Srwatson NULL && 168193217Spjd (inp->inp_flags & INP_BINDANY) == 0) { 169120856Sume return (EADDRNOTAVAIL); 170193217Spjd } 17153541Sshin 17253541Sshin /* 17353541Sshin * XXX: bind to an anycast address might accidentally 17453541Sshin * cause sending a packet with anycast source address. 17578064Sume * We should allow to bind to a deprecated address, since 176120913Sume * the application dares to use it. 17753541Sshin */ 178194760Srwatson if (ifa != NULL && 179194760Srwatson ((struct in6_ifaddr *)ifa)->ia6_flags & 18078064Sume (IN6_IFF_ANYCAST|IN6_IFF_NOTREADY|IN6_IFF_DETACHED)) { 181194760Srwatson ifa_free(ifa); 182120856Sume return (EADDRNOTAVAIL); 18353541Sshin } 184194760Srwatson if (ifa != NULL) 185194760Srwatson ifa_free(ifa); 18653541Sshin } 18753541Sshin if (lport) { 18853541Sshin struct inpcb *t; 18953541Sshin 19053541Sshin /* GROSS */ 191181803Sbz if (ntohs(lport) <= V_ipport_reservedhigh && 192181803Sbz ntohs(lport) >= V_ipport_reservedlow && 193164033Srwatson priv_check_cred(cred, PRIV_NETINET_RESERVEDPORT, 194170587Srwatson 0)) 195120856Sume return (EACCES); 196159976Spjd if (!IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr) && 197183606Sbz priv_check_cred(inp->inp_cred, 198170587Srwatson PRIV_NETINET_REUSEPORT, 0) != 0) { 19955679Sshin t = in6_pcblookup_local(pcbinfo, 20053541Sshin &sin6->sin6_addr, lport, 201180427Sbz INPLOOKUP_WILDCARD, cred); 202132699Syar if (t && 203189848Srwatson ((t->inp_flags & INP_TIMEWAIT) == 0) && 204132699Syar (so->so_type != SOCK_STREAM || 205132699Syar IN6_IS_ADDR_UNSPECIFIED(&t->in6p_faddr)) && 20697658Stanimura (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) || 207171260Sdelphij !IN6_IS_ADDR_UNSPECIFIED(&t->in6p_laddr) || 208171260Sdelphij (t->inp_socket->so_options & SO_REUSEPORT) 209183606Sbz == 0) && (inp->inp_cred->cr_uid != 210183606Sbz t->inp_cred->cr_uid)) 21197658Stanimura return (EADDRINUSE); 212221247Sbz#ifdef INET 21378064Sume if ((inp->inp_flags & IN6P_IPV6_V6ONLY) == 0 && 21455679Sshin IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 21555679Sshin struct sockaddr_in sin; 21655679Sshin 21755679Sshin in6_sin6_2_sin(&sin, sin6); 21855679Sshin t = in_pcblookup_local(pcbinfo, 219180427Sbz sin.sin_addr, lport, 220180427Sbz INPLOOKUP_WILDCARD, cred); 221132699Syar if (t && 222189848Srwatson ((t->inp_flags & 223132699Syar INP_TIMEWAIT) == 0) && 224132699Syar (so->so_type != SOCK_STREAM || 225132699Syar ntohl(t->inp_faddr.s_addr) == 226132699Syar INADDR_ANY) && 227183606Sbz (inp->inp_cred->cr_uid != 228183606Sbz t->inp_cred->cr_uid)) 22955679Sshin return (EADDRINUSE); 23055679Sshin } 231221247Sbz#endif 23253541Sshin } 23353541Sshin t = in6_pcblookup_local(pcbinfo, &sin6->sin6_addr, 234222215Srwatson lport, lookupflags, cred); 235189848Srwatson if (t && (reuseport & ((t->inp_flags & INP_TIMEWAIT) ? 236171260Sdelphij intotw(t)->tw_so_options : 237116453Scognet t->inp_socket->so_options)) == 0) 238120856Sume return (EADDRINUSE); 239221247Sbz#ifdef INET 24078064Sume if ((inp->inp_flags & IN6P_IPV6_V6ONLY) == 0 && 24155679Sshin IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 24255679Sshin struct sockaddr_in sin; 24355679Sshin 24455679Sshin in6_sin6_2_sin(&sin, sin6); 24555679Sshin t = in_pcblookup_local(pcbinfo, sin.sin_addr, 246222215Srwatson lport, lookupflags, cred); 247189848Srwatson if (t && t->inp_flags & INP_TIMEWAIT) { 248171260Sdelphij if ((reuseport & 249116453Scognet intotw(t)->tw_so_options) == 0 && 250116453Scognet (ntohl(t->inp_laddr.s_addr) != 251171260Sdelphij INADDR_ANY || ((inp->inp_vflag & 252171260Sdelphij INP_IPV6PROTO) == 253116453Scognet (t->inp_vflag & INP_IPV6PROTO)))) 254116453Scognet return (EADDRINUSE); 255116453Scognet } 256171260Sdelphij else if (t && 257171260Sdelphij (reuseport & t->inp_socket->so_options) 258171260Sdelphij == 0 && (ntohl(t->inp_laddr.s_addr) != 259116453Scognet INADDR_ANY || INP_SOCKAF(so) == 26097658Stanimura INP_SOCKAF(t->inp_socket))) 26197658Stanimura return (EADDRINUSE); 26255679Sshin } 263221247Sbz#endif 26453541Sshin } 26553541Sshin inp->in6p_laddr = sin6->sin6_addr; 26653541Sshin } 26753541Sshin if (lport == 0) { 268219570Sbz if ((error = in6_pcbsetport(&inp->in6p_laddr, inp, cred)) != 0) { 269219570Sbz /* Undo an address bind that may have occurred. */ 270219570Sbz inp->in6p_laddr = in6addr_any; 271188144Sjamie return (error); 272219570Sbz } 273183611Sbz } else { 27462587Sitojun inp->inp_lport = lport; 27562587Sitojun if (in_pcbinshash(inp) != 0) { 27662587Sitojun inp->in6p_laddr = in6addr_any; 27762587Sitojun inp->inp_lport = 0; 27862587Sitojun return (EAGAIN); 27953541Sshin } 28053541Sshin } 281120856Sume return (0); 28253541Sshin} 28353541Sshin 28453541Sshin/* 28553541Sshin * Transform old in6_pcbconnect() into an inner subroutine for new 28653541Sshin * in6_pcbconnect(): Do some validity-checking on the remote 28753541Sshin * address (in mbuf 'nam') and then determine local host address 28853541Sshin * (i.e., which interface) to use to access that remote host. 28953541Sshin * 29053541Sshin * This preserves definition of in6_pcbconnect(), while supporting a 29153541Sshin * slightly different version for T/TCP. (This is more than 29253541Sshin * a bit of a kludge, but cleaning up the internal interfaces would 29353541Sshin * have forced minor changes in every protocol). 29453541Sshin */ 29553541Sshinint 296171259Sdelphijin6_pcbladdr(register struct inpcb *inp, struct sockaddr *nam, 297194777Sbz struct in6_addr *plocal_addr6) 29853541Sshin{ 29953541Sshin register struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam; 300148385Sume int error = 0; 30153541Sshin struct ifnet *ifp = NULL; 302148385Sume int scope_ambiguous = 0; 303194777Sbz struct in6_addr in6a; 30453541Sshin 305178285Srwatson INP_WLOCK_ASSERT(inp); 306222488Srwatson INP_HASH_WLOCK_ASSERT(inp->inp_pcbinfo); /* XXXRW: why? */ 307158011Srwatson 30853541Sshin if (nam->sa_len != sizeof (*sin6)) 30953541Sshin return (EINVAL); 31053541Sshin if (sin6->sin6_family != AF_INET6) 31153541Sshin return (EAFNOSUPPORT); 31253541Sshin if (sin6->sin6_port == 0) 31353541Sshin return (EADDRNOTAVAIL); 31453541Sshin 315181803Sbz if (sin6->sin6_scope_id == 0 && !V_ip6_use_defzone) 316148385Sume scope_ambiguous = 1; 317181803Sbz if ((error = sa6_embedscope(sin6, V_ip6_use_defzone)) != 0) 318148385Sume return(error); 319148385Sume 320194907Srwatson if (!TAILQ_EMPTY(&V_in6_ifaddrhead)) { 32153541Sshin /* 32253541Sshin * If the destination address is UNSPECIFIED addr, 32353541Sshin * use the loopback addr, e.g ::1. 32453541Sshin */ 32553541Sshin if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) 32653541Sshin sin6->sin6_addr = in6addr_loopback; 32753541Sshin } 328188144Sjamie if ((error = prison_remote_ip6(inp->inp_cred, &sin6->sin6_addr)) != 0) 329188144Sjamie return (error); 330148385Sume 331194777Sbz error = in6_selectsrc(sin6, inp->in6p_outputopts, 332194777Sbz inp, NULL, inp->inp_cred, &ifp, &in6a); 333194777Sbz if (error) 334194777Sbz return (error); 335194777Sbz 336148385Sume if (ifp && scope_ambiguous && 337148385Sume (error = in6_setscope(&sin6->sin6_addr, ifp, NULL)) != 0) { 338148385Sume return(error); 33953541Sshin } 340148385Sume 341148385Sume /* 342194777Sbz * Do not update this earlier, in case we return with an error. 343194777Sbz * 344194777Sbz * XXX: this in6_selectsrc result might replace the bound local 345202915Sbz * address with the address specified by setsockopt(IPV6_PKTINFO). 346194777Sbz * Is it the intended behavior? 347194777Sbz */ 348194777Sbz *plocal_addr6 = in6a; 349194777Sbz 350194777Sbz /* 351148385Sume * Don't do pcblookup call here; return interface in 352148385Sume * plocal_addr6 353148385Sume * and exit to caller, that will do the lookup. 354148385Sume */ 355148385Sume 356120856Sume return (0); 35753541Sshin} 35853541Sshin 35953541Sshin/* 36053541Sshin * Outer subroutine: 36153541Sshin * Connect from a socket to a specified address. 36253541Sshin * Both address and port must be specified in argument sin. 36353541Sshin * If don't have a local address for this socket yet, 36453541Sshin * then pick one. 36553541Sshin */ 36653541Sshinint 367222691Srwatsonin6_pcbconnect_mbuf(register struct inpcb *inp, struct sockaddr *nam, 368222691Srwatson struct ucred *cred, struct mbuf *m) 36953541Sshin{ 370222488Srwatson struct inpcbinfo *pcbinfo = inp->inp_pcbinfo; 37153541Sshin register struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam; 372194777Sbz struct in6_addr addr6; 37353541Sshin int error; 37453541Sshin 375178285Srwatson INP_WLOCK_ASSERT(inp); 376222488Srwatson INP_HASH_WLOCK_ASSERT(pcbinfo); 377132714Srwatson 37853541Sshin /* 37995023Ssuz * Call inner routine, to assign local interface address. 38095023Ssuz * in6_pcbladdr() may automatically fill in sin6_scope_id. 38153541Sshin */ 38253541Sshin if ((error = in6_pcbladdr(inp, nam, &addr6)) != 0) 383120856Sume return (error); 38453541Sshin 385222488Srwatson if (in6_pcblookup_hash_locked(pcbinfo, &sin6->sin6_addr, 38653541Sshin sin6->sin6_port, 38753541Sshin IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr) 388194777Sbz ? &addr6 : &inp->in6p_laddr, 38953541Sshin inp->inp_lport, 0, NULL) != NULL) { 39053541Sshin return (EADDRINUSE); 39153541Sshin } 39253541Sshin if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) { 39353541Sshin if (inp->inp_lport == 0) { 394127505Spjd error = in6_pcbbind(inp, (struct sockaddr *)0, cred); 39553541Sshin if (error) 39653541Sshin return (error); 39753541Sshin } 398194777Sbz inp->in6p_laddr = addr6; 39953541Sshin } 40053541Sshin inp->in6p_faddr = sin6->sin6_addr; 40153541Sshin inp->inp_fport = sin6->sin6_port; 40278064Sume /* update flowinfo - draft-itojun-ipv6-flowlabel-api-00 */ 403186141Sbz inp->inp_flow &= ~IPV6_FLOWLABEL_MASK; 404186141Sbz if (inp->inp_flags & IN6P_AUTOFLOWLABEL) 405186141Sbz inp->inp_flow |= 406120649Sume (htonl(ip6_randomflowlabel()) & IPV6_FLOWLABEL_MASK); 40753541Sshin 408222691Srwatson in_pcbrehash_mbuf(inp, m); 409171133Sgnn 41053541Sshin return (0); 41153541Sshin} 41253541Sshin 413222691Srwatsonint 414222691Srwatsonin6_pcbconnect(struct inpcb *inp, struct sockaddr *nam, struct ucred *cred) 415222691Srwatson{ 416222691Srwatson 417222691Srwatson return (in6_pcbconnect_mbuf(inp, nam, cred, NULL)); 418222691Srwatson} 419222691Srwatson 42053541Sshinvoid 421171259Sdelphijin6_pcbdisconnect(struct inpcb *inp) 42253541Sshin{ 423132714Srwatson 424178285Srwatson INP_WLOCK_ASSERT(inp); 425222488Srwatson INP_HASH_WLOCK_ASSERT(inp->inp_pcbinfo); 426132714Srwatson 42753541Sshin bzero((caddr_t)&inp->in6p_faddr, sizeof(inp->in6p_faddr)); 42853541Sshin inp->inp_fport = 0; 42978064Sume /* clear flowinfo - draft-itojun-ipv6-flowlabel-api-00 */ 430186141Sbz inp->inp_flow &= ~IPV6_FLOWLABEL_MASK; 43153541Sshin in_pcbrehash(inp); 43253541Sshin} 43353541Sshin 434102218Struckmanstruct sockaddr * 435171259Sdelphijin6_sockaddr(in_port_t port, struct in6_addr *addr_p) 436102218Struckman{ 437102218Struckman struct sockaddr_in6 *sin6; 438102218Struckman 439184205Sdes sin6 = malloc(sizeof *sin6, M_SONAME, M_WAITOK); 440102218Struckman bzero(sin6, sizeof *sin6); 441102218Struckman sin6->sin6_family = AF_INET6; 442102218Struckman sin6->sin6_len = sizeof(*sin6); 443102218Struckman sin6->sin6_port = port; 444102218Struckman sin6->sin6_addr = *addr_p; 445148385Sume (void)sa6_recoverscope(sin6); /* XXX: should catch errors */ 446102218Struckman 447102218Struckman return (struct sockaddr *)sin6; 448102218Struckman} 449102218Struckman 450102218Struckmanstruct sockaddr * 451171259Sdelphijin6_v4mapsin6_sockaddr(in_port_t port, struct in_addr *addr_p) 452102218Struckman{ 453102218Struckman struct sockaddr_in sin; 454102218Struckman struct sockaddr_in6 *sin6_p; 455102218Struckman 456102218Struckman bzero(&sin, sizeof sin); 457102218Struckman sin.sin_family = AF_INET; 458102218Struckman sin.sin_len = sizeof(sin); 459102218Struckman sin.sin_port = port; 460102218Struckman sin.sin_addr = *addr_p; 461102218Struckman 462184205Sdes sin6_p = malloc(sizeof *sin6_p, M_SONAME, 463111119Simp M_WAITOK); 464102218Struckman in6_sin_2_v4mapsin6(&sin, sin6_p); 465102218Struckman 466102218Struckman return (struct sockaddr *)sin6_p; 467102218Struckman} 468102218Struckman 46953541Sshinint 470171259Sdelphijin6_getsockaddr(struct socket *so, struct sockaddr **nam) 47153541Sshin{ 47253541Sshin register struct inpcb *inp; 473102218Struckman struct in6_addr addr; 474102218Struckman in_port_t port; 47553541Sshin 47653541Sshin inp = sotoinpcb(so); 477169462Srwatson KASSERT(inp != NULL, ("in6_getsockaddr: inp == NULL")); 478157673Srwatson 479178320Srwatson INP_RLOCK(inp); 480102218Struckman port = inp->inp_lport; 481102218Struckman addr = inp->in6p_laddr; 482178320Srwatson INP_RUNLOCK(inp); 48353541Sshin 484102218Struckman *nam = in6_sockaddr(port, &addr); 48553541Sshin return 0; 48653541Sshin} 48753541Sshin 48853541Sshinint 489171259Sdelphijin6_getpeeraddr(struct socket *so, struct sockaddr **nam) 49053541Sshin{ 49153541Sshin struct inpcb *inp; 492102218Struckman struct in6_addr addr; 493102218Struckman in_port_t port; 49453541Sshin 49553541Sshin inp = sotoinpcb(so); 496169462Srwatson KASSERT(inp != NULL, ("in6_getpeeraddr: inp == NULL")); 497157673Srwatson 498178320Srwatson INP_RLOCK(inp); 499102218Struckman port = inp->inp_fport; 500102218Struckman addr = inp->in6p_faddr; 501178320Srwatson INP_RUNLOCK(inp); 50253541Sshin 503102218Struckman *nam = in6_sockaddr(port, &addr); 50453541Sshin return 0; 50553541Sshin} 50653541Sshin 50753541Sshinint 50853541Sshinin6_mapped_sockaddr(struct socket *so, struct sockaddr **nam) 50953541Sshin{ 510157673Srwatson struct inpcb *inp; 51153541Sshin int error; 51253541Sshin 513157673Srwatson inp = sotoinpcb(so); 514157673Srwatson KASSERT(inp != NULL, ("in6_mapped_sockaddr: inp == NULL")); 515157673Srwatson 516221247Sbz#ifdef INET 517124332Sume if ((inp->inp_vflag & (INP_IPV4 | INP_IPV6)) == INP_IPV4) { 518169462Srwatson error = in_getsockaddr(so, nam); 51954952Seivind if (error == 0) 52053541Sshin in6_sin_2_v4mapsin6_in_sock(nam); 521221247Sbz } else 522221247Sbz#endif 523221247Sbz { 524169462Srwatson /* scope issues will be handled in in6_getsockaddr(). */ 525169462Srwatson error = in6_getsockaddr(so, nam); 526120913Sume } 52753541Sshin 52853541Sshin return error; 52953541Sshin} 53053541Sshin 53153541Sshinint 53253541Sshinin6_mapped_peeraddr(struct socket *so, struct sockaddr **nam) 53353541Sshin{ 534157673Srwatson struct inpcb *inp; 53553541Sshin int error; 53653541Sshin 537157673Srwatson inp = sotoinpcb(so); 538157673Srwatson KASSERT(inp != NULL, ("in6_mapped_peeraddr: inp == NULL")); 539157673Srwatson 540221247Sbz#ifdef INET 541124332Sume if ((inp->inp_vflag & (INP_IPV4 | INP_IPV6)) == INP_IPV4) { 542169462Srwatson error = in_getpeeraddr(so, nam); 54354952Seivind if (error == 0) 54453541Sshin in6_sin_2_v4mapsin6_in_sock(nam); 54553541Sshin } else 546221247Sbz#endif 547169462Srwatson /* scope issues will be handled in in6_getpeeraddr(). */ 548169462Srwatson error = in6_getpeeraddr(so, nam); 54953541Sshin 55053541Sshin return error; 55153541Sshin} 55253541Sshin 55353541Sshin/* 55453541Sshin * Pass some notification to all connections of a protocol 55553541Sshin * associated with address dst. The local address and/or port numbers 55653541Sshin * may be specified to limit the search. The "usual action" will be 55753541Sshin * taken, depending on the ctlinput cmd. The caller must filter any 55853541Sshin * cmds that are uninteresting (e.g., no error in the map). 55953541Sshin * Call the protocol specific routine (if any) to report 56053541Sshin * any errors for each matching socket. 56153541Sshin */ 56253541Sshinvoid 563171259Sdelphijin6_pcbnotify(struct inpcbinfo *pcbinfo, struct sockaddr *dst, 564171259Sdelphij u_int fport_arg, const struct sockaddr *src, u_int lport_arg, 565171259Sdelphij int cmd, void *cmdarg, 566175162Sobrien struct inpcb *(*notify)(struct inpcb *, int)) 56753541Sshin{ 568177961Srwatson struct inpcb *inp, *inp_temp; 56978064Sume struct sockaddr_in6 sa6_src, *sa6_dst; 57053541Sshin u_short fport = fport_arg, lport = lport_arg; 57178064Sume u_int32_t flowinfo; 572157673Srwatson int errno; 57353541Sshin 574119995Sru if ((unsigned)cmd >= PRC_NCMDS || dst->sa_family != AF_INET6) 57553541Sshin return; 57678064Sume 57778064Sume sa6_dst = (struct sockaddr_in6 *)dst; 57878064Sume if (IN6_IS_ADDR_UNSPECIFIED(&sa6_dst->sin6_addr)) 57953541Sshin return; 58053541Sshin 58153541Sshin /* 58278064Sume * note that src can be NULL when we get notify by local fragmentation. 58378064Sume */ 58491346Salfred sa6_src = (src == NULL) ? sa6_any : *(const struct sockaddr_in6 *)src; 58578064Sume flowinfo = sa6_src.sin6_flowinfo; 58678064Sume 58778064Sume /* 58853541Sshin * Redirects go to all references to the destination, 58962587Sitojun * and use in6_rtchange to invalidate the route cache. 59062587Sitojun * Dead host indications: also use in6_rtchange to invalidate 59162587Sitojun * the cache, and deliver the error to all the sockets. 59253541Sshin * Otherwise, if we have knowledge of the local port and address, 59353541Sshin * deliver only to that socket. 59453541Sshin */ 59553541Sshin if (PRC_IS_REDIRECT(cmd) || cmd == PRC_HOSTDEAD) { 59653541Sshin fport = 0; 59753541Sshin lport = 0; 59878064Sume bzero((caddr_t)&sa6_src.sin6_addr, sizeof(sa6_src.sin6_addr)); 59962587Sitojun 60078064Sume if (cmd != PRC_HOSTDEAD) 60178064Sume notify = in6_rtchange; 60253541Sshin } 60353541Sshin errno = inet6ctlerrmap[cmd]; 604133192Srwatson INP_INFO_WLOCK(pcbinfo); 605177961Srwatson LIST_FOREACH_SAFE(inp, pcbinfo->ipi_listhead, inp_list, inp_temp) { 606178285Srwatson INP_WLOCK(inp); 607171260Sdelphij if ((inp->inp_vflag & INP_IPV6) == 0) { 608178285Srwatson INP_WUNLOCK(inp); 60953541Sshin continue; 610133192Srwatson } 61162587Sitojun 61278064Sume /* 613125776Sume * If the error designates a new path MTU for a destination 614125776Sume * and the application (associated with this socket) wanted to 615125776Sume * know the value, notify. Note that we notify for all 616125776Sume * disconnected sockets if the corresponding application 617125776Sume * wanted. This is because some UDP applications keep sending 618125776Sume * sockets disconnected. 619125776Sume * XXX: should we avoid to notify the value to TCP sockets? 620125776Sume */ 621125776Sume if (cmd == PRC_MSGSIZE && (inp->inp_flags & IN6P_MTU) != 0 && 622125776Sume (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) || 623125776Sume IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr, &sa6_dst->sin6_addr))) { 624125776Sume ip6_notify_pmtu(inp, (struct sockaddr_in6 *)dst, 625125776Sume (u_int32_t *)cmdarg); 626125776Sume } 627125776Sume 628125776Sume /* 62978064Sume * Detect if we should notify the error. If no source and 63078064Sume * destination ports are specifed, but non-zero flowinfo and 63178064Sume * local address match, notify the error. This is the case 63278064Sume * when the error is delivered with an encrypted buffer 63378064Sume * by ESP. Otherwise, just compare addresses and ports 63478064Sume * as usual. 63578064Sume */ 63678064Sume if (lport == 0 && fport == 0 && flowinfo && 63778064Sume inp->inp_socket != NULL && 638186141Sbz flowinfo == (inp->inp_flow & IPV6_FLOWLABEL_MASK) && 63978064Sume IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, &sa6_src.sin6_addr)) 64078064Sume goto do_notify; 64178064Sume else if (!IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr, 64278064Sume &sa6_dst->sin6_addr) || 64378064Sume inp->inp_socket == 0 || 64478064Sume (lport && inp->inp_lport != lport) || 64578064Sume (!IN6_IS_ADDR_UNSPECIFIED(&sa6_src.sin6_addr) && 64678064Sume !IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, 64778064Sume &sa6_src.sin6_addr)) || 648133192Srwatson (fport && inp->inp_fport != fport)) { 649178285Srwatson INP_WUNLOCK(inp); 65053541Sshin continue; 651133192Srwatson } 65262587Sitojun 65378064Sume do_notify: 654134121Srwatson if (notify) { 655134121Srwatson if ((*notify)(inp, errno)) 656178285Srwatson INP_WUNLOCK(inp); 657134121Srwatson } else 658178285Srwatson INP_WUNLOCK(inp); 65953541Sshin } 660133192Srwatson INP_INFO_WUNLOCK(pcbinfo); 66153541Sshin} 66253541Sshin 66353541Sshin/* 664222488Srwatson * Lookup a PCB based on the local address and port. Caller must hold the 665222488Srwatson * hash lock. No inpcb locks or references are acquired. 66653541Sshin */ 66753541Sshinstruct inpcb * 668171259Sdelphijin6_pcblookup_local(struct inpcbinfo *pcbinfo, struct in6_addr *laddr, 669222215Srwatson u_short lport, int lookupflags, struct ucred *cred) 67053541Sshin{ 67153541Sshin register struct inpcb *inp; 67253541Sshin int matchwild = 3, wildcard; 67353541Sshin 674222215Srwatson KASSERT((lookupflags & ~(INPLOOKUP_WILDCARD)) == 0, 675222215Srwatson ("%s: invalid lookup flags %d", __func__, lookupflags)); 676222215Srwatson 677222488Srwatson INP_HASH_WLOCK_ASSERT(pcbinfo); 678158011Srwatson 679222215Srwatson if ((lookupflags & INPLOOKUP_WILDCARD) == 0) { 68053541Sshin struct inpcbhead *head; 68153541Sshin /* 68253541Sshin * Look for an unconnected (wildcard foreign addr) PCB that 68353541Sshin * matches the local address and port we're looking for. 68453541Sshin */ 685169154Srwatson head = &pcbinfo->ipi_hashbase[INP_PCBHASH(INADDR_ANY, lport, 686169154Srwatson 0, pcbinfo->ipi_hashmask)]; 68753541Sshin LIST_FOREACH(inp, head, inp_hash) { 688185435Sbz /* XXX inp locking */ 68954952Seivind if ((inp->inp_vflag & INP_IPV6) == 0) 69053541Sshin continue; 69153541Sshin if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) && 69253541Sshin IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr) && 69353541Sshin inp->inp_lport == lport) { 694185435Sbz /* Found. */ 695185435Sbz if (cred == NULL || 696192895Sjamie prison_equal_ip6(cred->cr_prison, 697192895Sjamie inp->inp_cred->cr_prison)) 698185435Sbz return (inp); 69953541Sshin } 70053541Sshin } 70153541Sshin /* 70253541Sshin * Not found. 70353541Sshin */ 70453541Sshin return (NULL); 70553541Sshin } else { 70653541Sshin struct inpcbporthead *porthash; 70753541Sshin struct inpcbport *phd; 70853541Sshin struct inpcb *match = NULL; 70953541Sshin /* 71053541Sshin * Best fit PCB lookup. 71153541Sshin * 71253541Sshin * First see if this local port is in use by looking on the 71353541Sshin * port hash list. 71453541Sshin */ 715169154Srwatson porthash = &pcbinfo->ipi_porthashbase[INP_PCBPORTHASH(lport, 716169154Srwatson pcbinfo->ipi_porthashmask)]; 71753541Sshin LIST_FOREACH(phd, porthash, phd_hash) { 71853541Sshin if (phd->phd_port == lport) 71953541Sshin break; 72053541Sshin } 72153541Sshin if (phd != NULL) { 72253541Sshin /* 72353541Sshin * Port is in use by one or more PCBs. Look for best 72453541Sshin * fit. 72553541Sshin */ 72653541Sshin LIST_FOREACH(inp, &phd->phd_pcblist, inp_portlist) { 72753541Sshin wildcard = 0; 728185435Sbz if (cred != NULL && 729192895Sjamie !prison_equal_ip6(cred->cr_prison, 730192895Sjamie inp->inp_cred->cr_prison)) 731185435Sbz continue; 732185435Sbz /* XXX inp locking */ 73354952Seivind if ((inp->inp_vflag & INP_IPV6) == 0) 73453541Sshin continue; 73553541Sshin if (!IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr)) 73653541Sshin wildcard++; 73753541Sshin if (!IN6_IS_ADDR_UNSPECIFIED( 73853541Sshin &inp->in6p_laddr)) { 73953541Sshin if (IN6_IS_ADDR_UNSPECIFIED(laddr)) 74053541Sshin wildcard++; 74153541Sshin else if (!IN6_ARE_ADDR_EQUAL( 742185435Sbz &inp->in6p_laddr, laddr)) 74353541Sshin continue; 74453541Sshin } else { 74553541Sshin if (!IN6_IS_ADDR_UNSPECIFIED(laddr)) 74653541Sshin wildcard++; 74753541Sshin } 74853541Sshin if (wildcard < matchwild) { 74953541Sshin match = inp; 75053541Sshin matchwild = wildcard; 751185435Sbz if (matchwild == 0) 75253541Sshin break; 75353541Sshin } 75453541Sshin } 75553541Sshin } 75653541Sshin return (match); 75753541Sshin } 75853541Sshin} 75953541Sshin 76081127Sumevoid 761171259Sdelphijin6_pcbpurgeif0(struct inpcbinfo *pcbinfo, struct ifnet *ifp) 76281127Sume{ 763186141Sbz struct inpcb *in6p; 76481127Sume struct ip6_moptions *im6o; 765191672Sbms int i, gap; 76681127Sume 767157978Srwatson INP_INFO_RLOCK(pcbinfo); 768169154Srwatson LIST_FOREACH(in6p, pcbinfo->ipi_listhead, inp_list) { 769178285Srwatson INP_WLOCK(in6p); 77081127Sume im6o = in6p->in6p_moptions; 771191672Sbms if ((in6p->inp_vflag & INP_IPV6) && im6o != NULL) { 77281127Sume /* 773191672Sbms * Unselect the outgoing ifp for multicast if it 774191672Sbms * is being detached. 77581127Sume */ 77681127Sume if (im6o->im6o_multicast_ifp == ifp) 77781127Sume im6o->im6o_multicast_ifp = NULL; 77881127Sume /* 77981127Sume * Drop multicast group membership if we joined 78081127Sume * through the interface being detached. 78181127Sume */ 782191672Sbms gap = 0; 783191672Sbms for (i = 0; i < im6o->im6o_num_memberships; i++) { 784191672Sbms if (im6o->im6o_membership[i]->in6m_ifp == 785191672Sbms ifp) { 786191672Sbms in6_mc_leave(im6o->im6o_membership[i], 787191672Sbms NULL); 788191672Sbms gap++; 789191672Sbms } else if (gap != 0) { 790191672Sbms im6o->im6o_membership[i - gap] = 791191672Sbms im6o->im6o_membership[i]; 79281127Sume } 79381127Sume } 794191672Sbms im6o->im6o_num_memberships -= gap; 79581127Sume } 796178285Srwatson INP_WUNLOCK(in6p); 79781127Sume } 798157978Srwatson INP_INFO_RUNLOCK(pcbinfo); 79981127Sume} 80081127Sume 80153541Sshin/* 80253541Sshin * Check for alternatives when higher level complains 80353541Sshin * about service problems. For now, invalidate cached 80453541Sshin * routing information. If the route was created dynamically 80553541Sshin * (by a redirect), time to try a default gateway again. 80653541Sshin */ 80753541Sshinvoid 808171259Sdelphijin6_losing(struct inpcb *in6p) 80953541Sshin{ 810171259Sdelphij 811122922Sandre /* 812122922Sandre * We don't store route pointers in the routing table anymore 813122922Sandre */ 814122922Sandre return; 81553541Sshin} 81653541Sshin 81753541Sshin/* 81853541Sshin * After a routing change, flush old routing 81953541Sshin * and allocate a (hopefully) better one. 82053541Sshin */ 82198211Shsustruct inpcb * 822171259Sdelphijin6_rtchange(struct inpcb *inp, int errno) 82353541Sshin{ 824122922Sandre /* 825122922Sandre * We don't store route pointers in the routing table anymore 826122922Sandre */ 82798211Shsu return inp; 82853541Sshin} 82953541Sshin 83053541Sshin/* 83153541Sshin * Lookup PCB in hash list. 83253541Sshin */ 83353541Sshinstruct inpcb * 834222488Srwatsonin6_pcblookup_hash_locked(struct inpcbinfo *pcbinfo, struct in6_addr *faddr, 835222488Srwatson u_int fport_arg, struct in6_addr *laddr, u_int lport_arg, 836222488Srwatson int lookupflags, struct ifnet *ifp) 83753541Sshin{ 83853541Sshin struct inpcbhead *head; 839185435Sbz struct inpcb *inp, *tmpinp; 84053541Sshin u_short fport = fport_arg, lport = lport_arg; 84178064Sume int faith; 84253541Sshin 843222215Srwatson KASSERT((lookupflags & ~(INPLOOKUP_WILDCARD)) == 0, 844222215Srwatson ("%s: invalid lookup flags %d", __func__, lookupflags)); 845222215Srwatson 846222488Srwatson INP_HASH_LOCK_ASSERT(pcbinfo); 847158011Srwatson 84883934Sbrooks if (faithprefix_p != NULL) 84983934Sbrooks faith = (*faithprefix_p)(laddr); 85083934Sbrooks else 85183934Sbrooks faith = 0; 85278064Sume 85353541Sshin /* 85453541Sshin * First look for an exact match. 85553541Sshin */ 856185435Sbz tmpinp = NULL; 857169154Srwatson head = &pcbinfo->ipi_hashbase[ 858169154Srwatson INP_PCBHASH(faddr->s6_addr32[3] /* XXX */, lport, fport, 859169154Srwatson pcbinfo->ipi_hashmask)]; 86054263Sshin LIST_FOREACH(inp, head, inp_hash) { 861185435Sbz /* XXX inp locking */ 86254952Seivind if ((inp->inp_vflag & INP_IPV6) == 0) 86353541Sshin continue; 86453541Sshin if (IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr, faddr) && 86553541Sshin IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr) && 86653541Sshin inp->inp_fport == fport && 86753541Sshin inp->inp_lport == lport) { 86853541Sshin /* 869185435Sbz * XXX We should be able to directly return 870185435Sbz * the inp here, without any checks. 871185435Sbz * Well unless both bound with SO_REUSEPORT? 87253541Sshin */ 873192895Sjamie if (prison_flag(inp->inp_cred, PR_IP6)) 874185435Sbz return (inp); 875185435Sbz if (tmpinp == NULL) 876185435Sbz tmpinp = inp; 87753541Sshin } 87853541Sshin } 879185435Sbz if (tmpinp != NULL) 880185435Sbz return (tmpinp); 88153541Sshin 882185435Sbz /* 883185435Sbz * Then look for a wildcard match, if requested. 884185435Sbz */ 885222215Srwatson if ((lookupflags & INPLOOKUP_WILDCARD) != 0) { 886185435Sbz struct inpcb *local_wild = NULL, *local_exact = NULL; 887185435Sbz struct inpcb *jail_wild = NULL; 888185435Sbz int injail; 889185435Sbz 890185435Sbz /* 891185435Sbz * Order of socket selection - we always prefer jails. 892185435Sbz * 1. jailed, non-wild. 893185435Sbz * 2. jailed, wild. 894185435Sbz * 3. non-jailed, non-wild. 895185435Sbz * 4. non-jailed, wild. 896185435Sbz */ 897169154Srwatson head = &pcbinfo->ipi_hashbase[INP_PCBHASH(INADDR_ANY, lport, 898169154Srwatson 0, pcbinfo->ipi_hashmask)]; 89954263Sshin LIST_FOREACH(inp, head, inp_hash) { 900185435Sbz /* XXX inp locking */ 90154952Seivind if ((inp->inp_vflag & INP_IPV6) == 0) 90253541Sshin continue; 903185435Sbz 904185435Sbz if (!IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) || 905185435Sbz inp->inp_lport != lport) { 906185435Sbz continue; 907185435Sbz } 908185435Sbz 909185435Sbz /* XXX inp locking */ 910185435Sbz if (faith && (inp->inp_flags & INP_FAITH) == 0) 911185435Sbz continue; 912185435Sbz 913192895Sjamie injail = prison_flag(inp->inp_cred, PR_IP6); 914185435Sbz if (injail) { 915188144Sjamie if (prison_check_ip6(inp->inp_cred, 916188144Sjamie laddr) != 0) 91753541Sshin continue; 918185435Sbz } else { 919185435Sbz if (local_exact != NULL) 920185435Sbz continue; 921185435Sbz } 922185435Sbz 923185435Sbz if (IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr)) { 924185435Sbz if (injail) 92553541Sshin return (inp); 926185435Sbz else 927185435Sbz local_exact = inp; 928185435Sbz } else if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) { 929185435Sbz if (injail) 930185435Sbz jail_wild = inp; 931185435Sbz else 93253541Sshin local_wild = inp; 93353541Sshin } 934185435Sbz } /* LIST_FOREACH */ 93553541Sshin 936185435Sbz if (jail_wild != NULL) 937185435Sbz return (jail_wild); 938185435Sbz if (local_exact != NULL) 939185435Sbz return (local_exact); 940185435Sbz if (local_wild != NULL) 941185435Sbz return (local_wild); 942222215Srwatson } /* if ((lookupflags & INPLOOKUP_WILDCARD) != 0) */ 943185435Sbz 94453541Sshin /* 94553541Sshin * Not found. 94653541Sshin */ 94753541Sshin return (NULL); 94853541Sshin} 94953541Sshin 950222488Srwatson/* 951222488Srwatson * Lookup PCB in hash list, using pcbinfo tables. This variation locks the 952222488Srwatson * hash list lock, and will return the inpcb locked (i.e., requires 953222488Srwatson * INPLOOKUP_LOCKPCB). 954222488Srwatson */ 955222488Srwatsonstatic struct inpcb * 956222488Srwatsonin6_pcblookup_hash(struct inpcbinfo *pcbinfo, struct in6_addr *faddr, 957222488Srwatson u_int fport, struct in6_addr *laddr, u_int lport, int lookupflags, 958222488Srwatson struct ifnet *ifp) 959222488Srwatson{ 960222488Srwatson struct inpcb *inp; 961222488Srwatson 962222488Srwatson INP_HASH_RLOCK(pcbinfo); 963222488Srwatson inp = in6_pcblookup_hash_locked(pcbinfo, faddr, fport, laddr, lport, 964222488Srwatson (lookupflags & ~(INPLOOKUP_RLOCKPCB | INPLOOKUP_WLOCKPCB)), ifp); 965222488Srwatson if (inp != NULL) { 966222488Srwatson in_pcbref(inp); 967222488Srwatson INP_HASH_RUNLOCK(pcbinfo); 968222488Srwatson if (lookupflags & INPLOOKUP_WLOCKPCB) { 969222488Srwatson INP_WLOCK(inp); 970222488Srwatson if (in_pcbrele_wlocked(inp)) 971222488Srwatson return (NULL); 972222488Srwatson } else if (lookupflags & INPLOOKUP_RLOCKPCB) { 973222488Srwatson INP_RLOCK(inp); 974222488Srwatson if (in_pcbrele_rlocked(inp)) 975222488Srwatson return (NULL); 976222488Srwatson } else 977222488Srwatson panic("%s: locking bug", __func__); 978222488Srwatson } else 979222488Srwatson INP_HASH_RUNLOCK(pcbinfo); 980222488Srwatson return (inp); 981222488Srwatson} 982222488Srwatson 983222488Srwatson/* 984222691Srwatson * Public inpcb lookup routines, accepting a 4-tuple, and optionally, an mbuf 985222691Srwatson * from which a pre-calculated hash value may be extracted. 986222488Srwatson */ 987222488Srwatsonstruct inpcb * 988222488Srwatsonin6_pcblookup(struct inpcbinfo *pcbinfo, struct in6_addr *faddr, u_int fport, 989222488Srwatson struct in6_addr *laddr, u_int lport, int lookupflags, struct ifnet *ifp) 990222488Srwatson{ 991222691Srwatson KASSERT((lookupflags & ~INPLOOKUP_MASK) == 0, 992222691Srwatson ("%s: invalid lookup flags %d", __func__, lookupflags)); 993222691Srwatson KASSERT((lookupflags & (INPLOOKUP_RLOCKPCB | INPLOOKUP_WLOCKPCB)) != 0, 994222691Srwatson ("%s: LOCKPCB not set", __func__)); 995222488Srwatson 996222691Srwatson return (in6_pcblookup_hash(pcbinfo, faddr, fport, laddr, lport, 997222691Srwatson lookupflags, ifp)); 998222691Srwatson} 999222691Srwatson 1000222691Srwatsonstruct inpcb * 1001222691Srwatsonin6_pcblookup_mbuf(struct inpcbinfo *pcbinfo, struct in6_addr *faddr, 1002222691Srwatson u_int fport, struct in6_addr *laddr, u_int lport, int lookupflags, 1003222691Srwatson struct ifnet *ifp, struct mbuf *m) 1004222691Srwatson{ 1005222488Srwatson KASSERT((lookupflags & ~INPLOOKUP_MASK) == 0, 1006222488Srwatson ("%s: invalid lookup flags %d", __func__, lookupflags)); 1007222488Srwatson KASSERT((lookupflags & (INPLOOKUP_RLOCKPCB | INPLOOKUP_WLOCKPCB)) != 0, 1008222488Srwatson ("%s: LOCKPCB not set", __func__)); 1009222488Srwatson 1010222488Srwatson return (in6_pcblookup_hash(pcbinfo, faddr, fport, laddr, lport, 1011222488Srwatson lookupflags, ifp)); 1012222488Srwatson} 1013222488Srwatson 101453541Sshinvoid 101553541Sshininit_sin6(struct sockaddr_in6 *sin6, struct mbuf *m) 101653541Sshin{ 101753541Sshin struct ip6_hdr *ip; 101853541Sshin 101953541Sshin ip = mtod(m, struct ip6_hdr *); 102053541Sshin bzero(sin6, sizeof(*sin6)); 102153541Sshin sin6->sin6_len = sizeof(*sin6); 102253541Sshin sin6->sin6_family = AF_INET6; 102353541Sshin sin6->sin6_addr = ip->ip6_src; 102453541Sshin 1025148385Sume (void)sa6_recoverscope(sin6); /* XXX: should catch errors... */ 1026148385Sume 102753541Sshin return; 102853541Sshin} 1029