1 /* $OpenBSD: in_pcb.h,v 1.71 2011/06/15 09:11:01 mikeb 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_int 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 u_char inp_ip_minttl; /* minimum TTL or drop */ 136 TAILQ_ENTRY(inpcb) inp_tdb_in_next, inp_tdb_out_next; 137 struct tdb *inp_tdb_in, *inp_tdb_out; 138 struct ipsec_policy *inp_ipo; 139 struct ipsec_ref *inp_ipsec_remotecred; 140 struct ipsec_ref *inp_ipsec_remoteauth; 141 #define inp_flowinfo inp_hu.hu_ipv6.ip6_flow 142 143 int in6p_cksum; 144 #ifndef _KERNEL 145 #define inp_csumoffset in6p_cksum 146 #endif 147 struct icmp6_filter *inp_icmp6filt; 148 void *inp_pf_sk; 149 u_int inp_rtableid; 150 int inp_pipex; /* pipex indication */ 151 }; 152 153 struct inpcbtable { 154 CIRCLEQ_HEAD(, inpcb) inpt_queue; 155 LIST_HEAD(inpcbhead, inpcb) *inpt_hashtbl, *inpt_lhashtbl; 156 u_long inpt_hash, inpt_lhash; 157 u_int16_t inpt_lastport; 158 }; 159 160 /* flags in inp_flags: */ 161 #define INP_RECVOPTS 0x001 /* receive incoming IP options */ 162 #define INP_RECVRETOPTS 0x002 /* receive IP options for reply */ 163 #define INP_RECVDSTADDR 0x004 /* receive IP dst address */ 164 165 #define INP_RXDSTOPTS INP_RECVOPTS 166 #define INP_RXHOPOPTS INP_RECVRETOPTS 167 #define INP_RXINFO INP_RECVDSTADDR 168 #define INP_RXSRCRT 0x010 169 #define INP_HOPLIMIT 0x020 170 171 #define INP_HDRINCL 0x008 /* user supplies entire IP header */ 172 #define INP_HIGHPORT 0x010 /* user wants "high" port binding */ 173 #define INP_LOWPORT 0x020 /* user wants "low" port binding */ 174 #define INP_RECVIF 0x080 /* receive incoming interface */ 175 #define INP_RECVTTL 0x040 /* receive incoming IP TTL */ 176 #define INP_RECVDSTPORT 0x200 /* receive IP dst addr before rdr */ 177 #define INP_RECVRTABLE 0x400 /* receive routing table */ 178 179 #define INP_CONTROLOPTS (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR| \ 180 INP_RXSRCRT|INP_HOPLIMIT|INP_RECVIF|INP_RECVTTL|INP_RECVDSTPORT| \ 181 INP_RECVRTABLE) 182 183 /* 184 * These flags' values should be determined by either the transport 185 * protocol at PRU_BIND, PRU_LISTEN, PRU_CONNECT, etc, or by in_pcb*(). 186 */ 187 #define INP_IPV6 0x100 /* sotopf(inp->inp_socket) == PF_INET6 */ 188 189 #if 1 /*KAME*/ 190 /* 191 * Flags in in6p_flags 192 * We define KAME's original flags in higher 16 bits as much as possible 193 * for compatibility with *bsd*s. 194 * XXX: Should IN6P_HIGHPORT and IN6P_LOWPORT be moved as well? 195 */ 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 #define IN6P_TCLASS 0x400000 /* receive traffic class value */ 205 #define IN6P_AUTOFLOWLABEL 0x800000 /* attach flowlabel automatically */ 206 207 #define IN6P_ANONPORT 0x4000000 /* port chosen for user */ 208 #define IN6P_FAITH 0x8000000 /* accept FAITH'ed connections */ 209 #define IN6P_RFC2292 0x40000000 /* used RFC2292 API on the socket */ 210 #define IN6P_MTU 0x80000000 /* receive path MTU */ 211 212 #define IN6P_MINMTU 0x20000000 /* use minimum MTU */ 213 214 #define IN6P_CONTROLOPTS (IN6P_PKTINFO|IN6P_HOPLIMIT|IN6P_HOPOPTS|\ 215 IN6P_DSTOPTS|IN6P_RTHDR|IN6P_RTHDRDSTOPTS|\ 216 IN6P_TCLASS|IN6P_AUTOFLOWLABEL|IN6P_RFC2292|\ 217 IN6P_MTU) 218 #endif 219 220 #define INPLOOKUP_WILDCARD 1 221 #define INPLOOKUP_SETLOCAL 2 222 #define INPLOOKUP_IPV6 4 223 224 #define sotoinpcb(so) ((struct inpcb *)(so)->so_pcb) 225 226 /* macros for handling bitmap of ports not to allocate dynamically */ 227 #define DP_MAPBITS (sizeof(u_int32_t) * NBBY) 228 #define DP_MAPSIZE (howmany(65536, DP_MAPBITS)) 229 #define DP_SET(m, p) ((m)[(p) / DP_MAPBITS] |= (1 << ((p) % DP_MAPBITS))) 230 #define DP_CLR(m, p) ((m)[(p) / DP_MAPBITS] &= ~(1 << ((p) % DP_MAPBITS))) 231 #define DP_ISSET(m, p) ((m)[(p) / DP_MAPBITS] & (1 << ((p) % DP_MAPBITS))) 232 233 /* default values for baddynamicports [see ip_init()] */ 234 #define DEFBADDYNAMICPORTS_TCP { \ 235 587, 749, 750, 751, 871, 2049, \ 236 6000, 6001, 6002, 6003, 6004, 6005, 6006, 6007, 6008, 6009, 6010, \ 237 0 } 238 #define DEFBADDYNAMICPORTS_UDP { 623, 664, 749, 750, 751, 2049, 0 } 239 240 struct baddynamicports { 241 u_int32_t tcp[DP_MAPSIZE]; 242 u_int32_t udp[DP_MAPSIZE]; 243 }; 244 245 #ifdef _KERNEL 246 247 #define sotopf(so) (so->so_proto->pr_domain->dom_family) 248 249 void in_losing(struct inpcb *); 250 int in_pcballoc(struct socket *, void *); 251 int in_pcbbind(void *, struct mbuf *, struct proc *); 252 int in_pcbconnect(void *, struct mbuf *); 253 void in_pcbdetach(void *); 254 void in_pcbdisconnect(void *); 255 struct inpcb * 256 in_pcbhashlookup(struct inpcbtable *, struct in_addr, 257 u_int, struct in_addr, u_int, u_int); 258 struct inpcb * 259 in_pcblookup_listen(struct inpcbtable *, struct in_addr, u_int, int, 260 struct mbuf *, u_int); 261 #ifdef INET6 262 struct inpcb * 263 in6_pcbhashlookup(struct inpcbtable *, struct in6_addr *, 264 u_int, struct in6_addr *, u_int); 265 struct inpcb * 266 in6_pcblookup_listen(struct inpcbtable *, 267 struct in6_addr *, u_int, int, struct mbuf *); 268 int in6_pcbbind(struct inpcb *, struct mbuf *, struct proc *); 269 int in6_pcbconnect(struct inpcb *, struct mbuf *); 270 int in6_setsockaddr(struct inpcb *, struct mbuf *); 271 int in6_setpeeraddr(struct inpcb *, struct mbuf *); 272 #endif /* INET6 */ 273 void in_pcbinit(struct inpcbtable *, int); 274 struct inpcb * 275 in_pcblookup(struct inpcbtable *, void *, u_int, void *, 276 u_int, int, u_int); 277 void in_pcbnotifyall(struct inpcbtable *, struct sockaddr *, 278 u_int, int, void (*)(struct inpcb *, int)); 279 void in_pcbrehash(struct inpcb *); 280 void in_rtchange(struct inpcb *, int); 281 void in_setpeeraddr(struct inpcb *, struct mbuf *); 282 void in_setsockaddr(struct inpcb *, struct mbuf *); 283 int in_baddynamic(u_int16_t, u_int16_t); 284 extern struct sockaddr_in *in_selectsrc(struct sockaddr_in *, 285 struct route *, int, struct ip_moptions *, int *, u_int); 286 struct rtentry * 287 in_pcbrtentry(struct inpcb *); 288 289 /* INET6 stuff */ 290 int in6_pcbnotify(struct inpcbtable *, struct sockaddr *, 291 u_int, struct sockaddr *, u_int, int, void *, 292 void (*)(struct inpcb *, int)); 293 int in6_selecthlim(struct inpcb *, struct ifnet *); 294 int in6_pcbsetport(struct in6_addr *, struct inpcb *, struct proc *); 295 #endif /* _KERNEL */ 296 #endif /* _NETINET_IN_PCB_H_ */ 297