1 /* $OpenBSD: in_pcb.h,v 1.49 2003/12/21 15:12:27 markus 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. Neither the name of the University nor the names of its contributors 46 * may be used to endorse or promote products derived from this software 47 * without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 59 * SUCH DAMAGE. 60 * 61 * @(#)in_pcb.h 8.1 (Berkeley) 6/10/93 62 */ 63 64 #ifndef _NETINET_IN_PCB_H_ 65 #define _NETINET_IN_PCB_H_ 66 67 #include <sys/queue.h> 68 #include <netinet/ip6.h> 69 #include <netinet6/ip6_var.h> 70 #include <netinet/icmp6.h> 71 #include <netinet/ip_ipsp.h> 72 73 union inpaddru { 74 struct in6_addr iau_addr6; 75 struct { 76 uint8_t pad[12]; 77 struct in_addr inaddr; /* easier transition */ 78 } iau_a4u; 79 }; 80 81 /* 82 * Common structure pcb for internet protocol implementation. 83 * Here are stored pointers to local and foreign host table 84 * entries, local and foreign socket numbers, and pointers 85 * up (to a socket structure) and down (to a protocol-specific) 86 * control block. 87 */ 88 struct inpcb { 89 LIST_ENTRY(inpcb) inp_hash; 90 LIST_ENTRY(inpcb) inp_lhash; /* extra hash for lport */ 91 CIRCLEQ_ENTRY(inpcb) inp_queue; 92 struct inpcbtable *inp_table; 93 union inpaddru inp_faddru; /* Foreign address. */ 94 union inpaddru inp_laddru; /* Local address. */ 95 #define inp_faddr inp_faddru.iau_a4u.inaddr 96 #define inp_faddr6 inp_faddru.iau_addr6 97 #define inp_laddr inp_laddru.iau_a4u.inaddr 98 #define inp_laddr6 inp_laddru.iau_addr6 99 u_int16_t inp_fport; /* foreign port */ 100 u_int16_t inp_lport; /* local port */ 101 struct socket *inp_socket; /* back pointer to socket */ 102 caddr_t inp_ppcb; /* pointer to per-protocol pcb */ 103 union { /* Route (notice increased size). */ 104 struct route ru_route; 105 struct route_in6 ru_route6; 106 } inp_ru; 107 #define inp_route inp_ru.ru_route 108 #define inp_route6 inp_ru.ru_route6 109 int inp_flags; /* generic IP/datagram flags */ 110 union { /* Header prototype. */ 111 struct ip hu_ip; 112 struct ip6_hdr hu_ipv6; 113 } inp_hu; 114 #define inp_ip inp_hu.hu_ip 115 #define inp_ipv6 inp_hu.hu_ipv6 116 struct mbuf *inp_options; /* IP options */ 117 struct ip6_pktopts *inp_outputopts6; /* IP6 options for outgoing packets */ 118 int inp_hops; 119 union { 120 struct ip_moptions *mou_mo; /* IPv4 multicast options */ 121 struct ip6_moptions *mou_mo6; /* IPv6 multicast options */ 122 } inp_mou; 123 #define inp_moptions inp_mou.mou_mo 124 #define inp_moptions6 inp_mou.mou_mo6 125 u_char inp_seclevel[4]; 126 #define SL_AUTH 0 /* Authentication level */ 127 #define SL_ESP_TRANS 1 /* ESP transport level */ 128 #define SL_ESP_NETWORK 2 /* ESP network (encapsulation) level */ 129 #define SL_IPCOMP 3 /* Compression level */ 130 u_int8_t inp_secrequire:4, /* Condensed State from above */ 131 inp_secresult:4; /* Result from Key Management */ 132 #define SR_FAILED 1 /* Negotiation failed permanently */ 133 #define SR_SUCCESS 2 /* SA successfully established */ 134 #define SR_WAIT 3 /* Waiting for SA */ 135 TAILQ_ENTRY(inpcb) inp_tdb_in_next, inp_tdb_out_next; 136 struct tdb *inp_tdb_in, *inp_tdb_out; 137 struct ipsec_policy *inp_ipo; 138 struct ipsec_ref *inp_ipsec_remotecred; 139 struct ipsec_ref *inp_ipsec_remoteauth; 140 #define inp_flowinfo inp_hu.hu_ipv6.ip6_flow 141 142 int in6p_cksum; 143 #ifndef _KERNEL 144 #define inp_csumoffset in6p_cksum 145 #endif 146 struct icmp6_filter *inp_icmp6filt; 147 }; 148 149 struct inpcbtable { 150 CIRCLEQ_HEAD(, inpcb) inpt_queue; 151 LIST_HEAD(inpcbhead, inpcb) *inpt_hashtbl, *inpt_lhashtbl; 152 u_long inpt_hash, inpt_lhash; 153 u_int16_t inpt_lastport; 154 }; 155 156 /* flags in inp_flags: */ 157 #define INP_RECVOPTS 0x001 /* receive incoming IP options */ 158 #define INP_RECVRETOPTS 0x002 /* receive IP options for reply */ 159 #define INP_RECVDSTADDR 0x004 /* receive IP dst address */ 160 161 #define INP_RXDSTOPTS INP_RECVOPTS 162 #define INP_RXHOPOPTS INP_RECVRETOPTS 163 #define INP_RXINFO INP_RECVDSTADDR 164 #define INP_RXSRCRT 0x010 165 #define INP_HOPLIMIT 0x020 166 167 #define INP_CONTROLOPTS (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR| \ 168 INP_RXSRCRT|INP_HOPLIMIT) 169 170 #define INP_HDRINCL 0x008 /* user supplies entire IP header */ 171 #define INP_HIGHPORT 0x010 /* user wants "high" port binding */ 172 #define INP_LOWPORT 0x020 /* user wants "low" port binding */ 173 174 /* 175 * These flags' values should be determined by either the transport 176 * protocol at PRU_BIND, PRU_LISTEN, PRU_CONNECT, etc, or by in_pcb*(). 177 */ 178 #define INP_IPV6 0x100 /* sotopf(inp->inp_socket) == PF_INET6 */ 179 180 #if 1 /*KAME*/ 181 /* 182 * Flags in in6p_flags 183 * We define KAME's original flags in higher 16 bits as much as possible 184 * for compatibility with *bsd*s. 185 * XXX: Should IN6P_HIGHPORT and IN6P_LOWPORT be moved as well? 186 */ 187 #define IN6P_RECVOPTS INP_RECVOPTS /* recv incoming IP6 options */ 188 #define IN6P_RECVRETOPTS INP_RECVRETOPTS /* recv IP6 options for reply */ 189 #define IN6P_RECVDSTADDR INP_RECVDSTADDR /* recv IP6 dst address */ 190 #define IN6P_HIGHPORT INP_HIGHPORT /* user wants "high" port */ 191 #define IN6P_LOWPORT INP_LOWPORT /* user wants "low" port */ 192 #define IN6P_PKTINFO 0x010000 /* receive IP6 dst and I/F */ 193 #define IN6P_HOPLIMIT 0x020000 /* receive hoplimit */ 194 #define IN6P_HOPOPTS 0x040000 /* receive hop-by-hop options */ 195 #define IN6P_DSTOPTS 0x080000 /* receive dst options after rthdr */ 196 #define IN6P_RTHDR 0x100000 /* receive routing header */ 197 #define IN6P_RTHDRDSTOPTS 0x200000 /* receive dstoptions before rthdr */ 198 199 #define IN6P_ANONPORT 0x4000000 /* port chosen for user */ 200 #define IN6P_FAITH 0x8000000 /* accept FAITH'ed connections */ 201 202 #define IN6P_MINMTU 0x20000000 /* use minimum MTU */ 203 204 #define IN6P_CONTROLOPTS (IN6P_PKTINFO|IN6P_HOPLIMIT|IN6P_HOPOPTS|\ 205 IN6P_DSTOPTS|IN6P_RTHDR|IN6P_RTHDRDSTOPTS|\ 206 IN6P_MINMTU) 207 #endif 208 209 #define INPLOOKUP_WILDCARD 1 210 #define INPLOOKUP_SETLOCAL 2 211 #define INPLOOKUP_IPV6 4 212 213 #define sotoinpcb(so) ((struct inpcb *)(so)->so_pcb) 214 215 /* macros for handling bitmap of ports not to allocate dynamically */ 216 #define DP_MAPBITS (sizeof(u_int32_t) * NBBY) 217 #define DP_MAPSIZE (howmany(IPPORT_RESERVED/2, DP_MAPBITS)) 218 #define DP_SET(m, p) ((m)[((p) - IPPORT_RESERVED/2) / DP_MAPBITS] |= (1 << ((p) % DP_MAPBITS))) 219 #define DP_CLR(m, p) ((m)[((p) - IPPORT_RESERVED/2) / DP_MAPBITS] &= ~(1 << ((p) % DP_MAPBITS))) 220 #define DP_ISSET(m, p) ((m)[((p) - IPPORT_RESERVED/2) / DP_MAPBITS] & (1 << ((p) % DP_MAPBITS))) 221 222 /* default values for baddynamicports [see ip_init()] */ 223 #define DEFBADDYNAMICPORTS_TCP { 587, 749, 750, 751, 760, 761, 871, 0 } 224 #define DEFBADDYNAMICPORTS_UDP { 750, 751, 0 } 225 226 struct baddynamicports { 227 u_int32_t tcp[DP_MAPSIZE]; 228 u_int32_t udp[DP_MAPSIZE]; 229 }; 230 231 #ifdef _KERNEL 232 233 #define sotopf(so) (so->so_proto->pr_domain->dom_family) 234 235 void in_losing(struct inpcb *); 236 int in_pcballoc(struct socket *, void *); 237 int in_pcbbind(void *, struct mbuf *); 238 int in_pcbconnect(void *, struct mbuf *); 239 void in_pcbdetach(void *); 240 void in_pcbdisconnect(void *); 241 struct inpcb * 242 in_pcbhashlookup(struct inpcbtable *, struct in_addr, 243 u_int, struct in_addr, u_int); 244 struct inpcb * 245 in_pcblookup_listen(struct inpcbtable *, struct in_addr, u_int, int); 246 #ifdef INET6 247 struct inpcb * 248 in6_pcbhashlookup(struct inpcbtable *, struct in6_addr *, 249 u_int, struct in6_addr *, u_int); 250 struct inpcb * 251 in6_pcblookup_listen(struct inpcbtable *, 252 struct in6_addr *, u_int, int); 253 int in6_pcbbind(struct inpcb *, struct mbuf *); 254 int in6_pcbconnect(struct inpcb *, struct mbuf *); 255 int in6_setsockaddr(struct inpcb *, struct mbuf *); 256 int in6_setpeeraddr(struct inpcb *, struct mbuf *); 257 #endif /* INET6 */ 258 void in_pcbinit(struct inpcbtable *, int); 259 struct inpcb * 260 in_pcblookup(struct inpcbtable *, void *, u_int, void *, 261 u_int, int); 262 int in_pcbnotify(struct inpcbtable *, struct sockaddr *, 263 u_int, struct in_addr, u_int, int, void (*)(struct inpcb *, int)); 264 void in_pcbnotifyall(struct inpcbtable *, struct sockaddr *, 265 int, void (*)(struct inpcb *, int)); 266 void in_pcbrehash(struct inpcb *); 267 void in_rtchange(struct inpcb *, int); 268 void in_setpeeraddr(struct inpcb *, struct mbuf *); 269 void in_setsockaddr(struct inpcb *, struct mbuf *); 270 int in_baddynamic(u_int16_t, u_int16_t); 271 extern struct sockaddr_in *in_selectsrc(struct sockaddr_in *, 272 struct route *, int, struct ip_moptions *, int *); 273 struct rtentry * 274 in_pcbrtentry(struct inpcb *); 275 276 /* INET6 stuff */ 277 int in6_pcbnotify(struct inpcbtable *, struct sockaddr *, 278 u_int, struct sockaddr *, u_int, int, void *, 279 void (*)(struct inpcb *, int)); 280 int in6_selecthlim(struct inpcb *, struct ifnet *); 281 int in6_pcbsetport(struct in6_addr *, struct inpcb *, struct proc *); 282 #endif /* _KERNEL */ 283 #endif /* _NETINET_IN_PCB_H_ */ 284