1 /* $OpenBSD: in_pcb.h,v 1.38 2001/07/05 08:31:47 jjbg Exp $ */ 2 /* $NetBSD: in_pcb.h,v 1.14 1996/02/13 23:42:00 christos Exp $ */ 3 4 /* 5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the project nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 /* 34 * Copyright (c) 1982, 1986, 1990, 1993 35 * The Regents of the University of California. All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 3. All advertising materials mentioning features or use of this software 46 * must display the following acknowledgement: 47 * This product includes software developed by the University of 48 * California, Berkeley and its contributors. 49 * 4. Neither the name of the University nor the names of its contributors 50 * may be used to endorse or promote products derived from this software 51 * without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 63 * SUCH DAMAGE. 64 * 65 * @(#)in_pcb.h 8.1 (Berkeley) 6/10/93 66 */ 67 68 #ifndef _NETINET_IN_PCB_H_ 69 #define _NETINET_IN_PCB_H_ 70 71 #include <sys/queue.h> 72 #include <netinet/ip6.h> 73 #include <netinet6/ip6_var.h> 74 #include <netinet/icmp6.h> 75 #include <netinet/ip_ipsp.h> 76 77 union inpaddru { 78 struct in6_addr iau_addr6; 79 struct { 80 uint8_t pad[12]; 81 struct in_addr inaddr; /* easier transition */ 82 } iau_a4u; 83 }; 84 85 /* 86 * Common structure pcb for internet protocol implementation. 87 * Here are stored pointers to local and foreign host table 88 * entries, local and foreign socket numbers, and pointers 89 * up (to a socket structure) and down (to a protocol-specific) 90 * control block. 91 */ 92 struct inpcb { 93 LIST_ENTRY(inpcb) inp_hash; 94 CIRCLEQ_ENTRY(inpcb) inp_queue; 95 struct inpcbtable *inp_table; 96 union inpaddru inp_faddru; /* Foreign address. */ 97 union inpaddru inp_laddru; /* Local address. */ 98 #define inp_faddr inp_faddru.iau_a4u.inaddr 99 #define inp_faddr6 inp_faddru.iau_addr6 100 #define inp_laddr inp_laddru.iau_a4u.inaddr 101 #define inp_laddr6 inp_laddru.iau_addr6 102 u_int16_t inp_fport; /* foreign port */ 103 u_int16_t inp_lport; /* local port */ 104 struct socket *inp_socket; /* back pointer to socket */ 105 caddr_t inp_ppcb; /* pointer to per-protocol pcb */ 106 union { /* Route (notice increased size). */ 107 struct route ru_route; 108 struct route_in6 ru_route6; 109 } inp_ru; 110 #define inp_route inp_ru.ru_route 111 #define inp_route6 inp_ru.ru_route6 112 int inp_flags; /* generic IP/datagram flags */ 113 union { /* Header prototype. */ 114 struct ip hu_ip; 115 struct ip6_hdr hu_ipv6; 116 } inp_hu; 117 #define inp_ip inp_hu.hu_ip 118 #define inp_ipv6 inp_hu.hu_ipv6 119 struct mbuf *inp_options; /* IP options */ 120 struct ip6_pktopts *inp_outputopts6; /* IP6 options for outgoing packets */ 121 int inp_hops; 122 union { 123 struct ip_moptions *mou_mo; /* IPv4 multicast options */ 124 struct ip6_moptions *mou_mo6; /* IPv6 multicast options */ 125 } inp_mou; 126 #define inp_moptions inp_mou.mou_mo 127 #define inp_moptions6 inp_mou.mou_mo6 128 u_char inp_seclevel[4]; 129 #define SL_AUTH 0 /* Authentication level */ 130 #define SL_ESP_TRANS 1 /* ESP transport level */ 131 #define SL_ESP_NETWORK 2 /* ESP network (encapsulation) level */ 132 #define SL_IPCOMP 3 /* Compression level */ 133 u_int8_t inp_secrequire:4, /* Condensed State from above */ 134 inp_secresult:4; /* Result from Key Management */ 135 #define SR_FAILED 1 /* Negotiation failed permanently */ 136 #define SR_SUCCESS 2 /* SA successfully established */ 137 #define SR_WAIT 3 /* Waiting for SA */ 138 TAILQ_ENTRY(inpcb) inp_tdb_in_next, inp_tdb_out_next; 139 struct tdb *inp_tdb_in, *inp_tdb_out; 140 struct ipsec_ref *inp_ipsec_localid; 141 struct ipsec_ref *inp_ipsec_remoteid; 142 struct ipsec_ref *inp_ipsec_localcred; 143 struct ipsec_ref *inp_ipsec_remotecred; 144 struct ipsec_ref *inp_ipsec_localauth; 145 struct ipsec_ref *inp_ipsec_remoteauth; 146 #define inp_flowinfo inp_hu.hu_ipv6.ip6_flow 147 148 int in6p_cksum; 149 #ifndef _KERNEL 150 #define inp_csumoffset in6p_cksum 151 #endif 152 struct icmp6_filter *inp_icmp6filt; 153 }; 154 155 struct inpcbtable { 156 CIRCLEQ_HEAD(, inpcb) inpt_queue; 157 LIST_HEAD(inpcbhead, inpcb) *inpt_hashtbl; 158 u_long inpt_hash; 159 u_int16_t inpt_lastport; 160 }; 161 162 /* flags in inp_flags: */ 163 #define INP_RECVOPTS 0x001 /* receive incoming IP options */ 164 #define INP_RECVRETOPTS 0x002 /* receive IP options for reply */ 165 #define INP_RECVDSTADDR 0x004 /* receive IP dst address */ 166 167 #define INP_RXDSTOPTS INP_RECVOPTS 168 #define INP_RXHOPOPTS INP_RECVRETOPTS 169 #define INP_RXINFO INP_RECVDSTADDR 170 #define INP_RXSRCRT 0x010 171 #define INP_HOPLIMIT 0x020 172 173 #define INP_CONTROLOPTS (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR| \ 174 INP_RXSRCRT|INP_HOPLIMIT) 175 176 #define INP_HDRINCL 0x008 /* user supplies entire IP header */ 177 #define INP_HIGHPORT 0x010 /* user wants "high" port binding */ 178 #define INP_LOWPORT 0x020 /* user wants "low" port binding */ 179 180 /* 181 * These flags' values should be determined by either the transport 182 * protocol at PRU_BIND, PRU_LISTEN, PRU_CONNECT, etc, or by in_pcb*(). 183 */ 184 #define INP_IPV6 0x100 /* sotopf(inp->inp_socket) == PF_INET6 */ 185 186 #if 1 /*KAME*/ 187 /* 188 * Flags in in6p_flags 189 * We define KAME's original flags in higher 16 bits as much as possible 190 * for compatibility with *bsd*s. 191 * XXX: Should IN6P_HIGHPORT and IN6P_LOWPORT be moved as well? 192 */ 193 #define IN6P_RECVOPTS INP_RECVOPTS /* recv incoming IP6 options */ 194 #define IN6P_RECVRETOPTS INP_RECVRETOPTS /* recv IP6 options for reply */ 195 #define IN6P_RECVDSTADDR INP_RECVDSTADDR /* recv IP6 dst address */ 196 #define IN6P_HIGHPORT INP_HIGHPORT /* user wants "high" port */ 197 #define IN6P_LOWPORT INP_LOWPORT /* user wants "low" port */ 198 #define IN6P_PKTINFO 0x010000 /* receive IP6 dst and I/F */ 199 #define IN6P_HOPLIMIT 0x020000 /* receive hoplimit */ 200 #define IN6P_HOPOPTS 0x040000 /* receive hop-by-hop options */ 201 #define IN6P_DSTOPTS 0x080000 /* receive dst options after rthdr */ 202 #define IN6P_RTHDR 0x100000 /* receive routing header */ 203 #define IN6P_RTHDRDSTOPTS 0x200000 /* receive dstoptions before rthdr */ 204 205 #define IN6P_ANONPORT 0x4000000 /* port chosen for user */ 206 #define IN6P_FAITH 0x8000000 /* accept FAITH'ed connections */ 207 208 #define IN6P_CONTROLOPTS (IN6P_PKTINFO|IN6P_HOPLIMIT|IN6P_HOPOPTS|\ 209 IN6P_DSTOPTS|IN6P_RTHDR|IN6P_RTHDRDSTOPTS) 210 #endif 211 212 #define INPLOOKUP_WILDCARD 1 213 #define INPLOOKUP_SETLOCAL 2 214 #define INPLOOKUP_IPV6 4 215 216 #define sotoinpcb(so) ((struct inpcb *)(so)->so_pcb) 217 218 /* macros for handling bitmap of ports not to allocate dynamically */ 219 #define DP_MAPBITS (sizeof(u_int32_t) * NBBY) 220 #define DP_MAPSIZE (howmany(IPPORT_RESERVED/2, DP_MAPBITS)) 221 #define DP_SET(m, p) ((m)[((p) - IPPORT_RESERVED/2) / DP_MAPBITS] |= (1 << ((p) % DP_MAPBITS))) 222 #define DP_CLR(m, p) ((m)[((p) - IPPORT_RESERVED/2) / DP_MAPBITS] &= ~(1 << ((p) % DP_MAPBITS))) 223 #define DP_ISSET(m, p) ((m)[((p) - IPPORT_RESERVED/2) / DP_MAPBITS] & (1 << ((p) % DP_MAPBITS))) 224 225 /* default values for baddynamicports [see ip_init()] */ 226 #define DEFBADDYNAMICPORTS_TCP { 587, 749, 750, 751, 760, 761, 871, 0 } 227 #define DEFBADDYNAMICPORTS_UDP { 750, 751, 0 } 228 229 struct baddynamicports { 230 u_int32_t tcp[DP_MAPSIZE]; 231 u_int32_t udp[DP_MAPSIZE]; 232 }; 233 234 #ifdef _KERNEL 235 236 #define sotopf(so) (so->so_proto->pr_domain->dom_family) 237 238 void in_losing __P((struct inpcb *)); 239 int in_pcballoc __P((struct socket *, void *)); 240 int in_pcbbind __P((void *, struct mbuf *)); 241 int in_pcbconnect __P((void *, struct mbuf *)); 242 void in_pcbdetach __P((void *)); 243 void in_pcbdisconnect __P((void *)); 244 struct inpcb * 245 in_pcbhashlookup __P((struct inpcbtable *, struct in_addr, 246 u_int, struct in_addr, u_int)); 247 #ifdef INET6 248 struct inpcb * 249 in6_pcbhashlookup __P((struct inpcbtable *, struct in6_addr *, 250 u_int, struct in6_addr *, u_int)); 251 int in6_pcbbind __P((struct inpcb *, struct mbuf *)); 252 int in6_pcbconnect __P((struct inpcb *, struct mbuf *)); 253 int in6_setsockaddr __P((struct inpcb *, struct mbuf *)); 254 int in6_setpeeraddr __P((struct inpcb *, struct mbuf *)); 255 #endif /* INET6 */ 256 void in_pcbinit __P((struct inpcbtable *, int)); 257 struct inpcb * 258 in_pcblookup __P((struct inpcbtable *, void *, u_int, void *, 259 u_int, int)); 260 void in_pcbnotify __P((struct inpcbtable *, struct sockaddr *, 261 u_int, struct in_addr, u_int, int, void (*)(struct inpcb *, int))); 262 void in_pcbnotifyall __P((struct inpcbtable *, struct sockaddr *, 263 int, void (*)(struct inpcb *, int))); 264 void in_pcbrehash __P((struct inpcb *)); 265 void in_rtchange __P((struct inpcb *, int)); 266 void in_setpeeraddr __P((struct inpcb *, struct mbuf *)); 267 void in_setsockaddr __P((struct inpcb *, struct mbuf *)); 268 int in_baddynamic __P((u_int16_t, u_int16_t)); 269 extern struct sockaddr_in *in_selectsrc __P((struct sockaddr_in *, 270 struct route *, int, struct ip_moptions *, int *)); 271 struct rtentry * 272 in_pcbrtentry __P((struct inpcb *)); 273 274 /* INET6 stuff */ 275 int in6_pcbnotify __P((struct inpcbtable *, struct sockaddr *, 276 u_int, struct sockaddr *, u_int, int, void *, 277 void (*)(struct inpcb *, int))); 278 struct in6_addr *in6_selectsrc __P((struct sockaddr_in6 *, 279 struct ip6_pktopts *, 280 struct ip6_moptions *, 281 struct route_in6 *, 282 struct in6_addr *, int *)); 283 int in6_selecthlim __P((struct inpcb *, struct ifnet *)); 284 int in6_pcbsetport __P((struct in6_addr *, struct inpcb *)); 285 #endif /* _KERNEL */ 286 #endif /* _NETINET_IN_PCB_H_ */ 287