/* $OpenBSD: in_pcb.h,v 1.122 2022/01/20 11:06:57 bluhm Exp $ */ /* $NetBSD: in_pcb.h,v 1.14 1996/02/13 23:42:00 christos Exp $ */ /* * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the project nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * Copyright (c) 1982, 1986, 1990, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)in_pcb.h 8.1 (Berkeley) 6/10/93 */ #ifndef _NETINET_IN_PCB_H_ #define _NETINET_IN_PCB_H_ #include #include #include #include #include #include #include struct pf_state_key; union inpaddru { struct in6_addr iau_addr6; struct { uint8_t pad[12]; struct in_addr inaddr; /* easier transition */ } iau_a4u; }; /* * Common structure pcb for internet protocol implementation. * Here are stored pointers to local and foreign host table * entries, local and foreign socket numbers, and pointers * up (to a socket structure) and down (to a protocol-specific) * control block. */ struct inpcb { LIST_ENTRY(inpcb) inp_hash; /* local and foreign hash */ LIST_ENTRY(inpcb) inp_lhash; /* local port hash */ TAILQ_ENTRY(inpcb) inp_queue; /* inet PCB queue */ struct inpcbtable *inp_table; /* inet queue/hash table */ union inpaddru inp_faddru; /* Foreign address. */ union inpaddru inp_laddru; /* Local address. */ #define inp_faddr inp_faddru.iau_a4u.inaddr #define inp_faddr6 inp_faddru.iau_addr6 #define inp_laddr inp_laddru.iau_a4u.inaddr #define inp_laddr6 inp_laddru.iau_addr6 u_int16_t inp_fport; /* foreign port */ u_int16_t inp_lport; /* local port */ struct socket *inp_socket; /* back pointer to socket */ caddr_t inp_ppcb; /* pointer to per-protocol pcb */ union { /* Route (notice increased size). */ struct route ru_route; struct route_in6 ru_route6; } inp_ru; #define inp_route inp_ru.ru_route #define inp_route6 inp_ru.ru_route6 struct refcnt inp_refcnt; /* refcount PCB, delay memory free */ int inp_flags; /* generic IP/datagram flags */ union { /* Header prototype. */ struct ip hu_ip; struct ip6_hdr hu_ipv6; } inp_hu; #define inp_ip inp_hu.hu_ip #define inp_ipv6 inp_hu.hu_ipv6 struct mbuf *inp_options; /* IP options */ struct ip6_pktopts *inp_outputopts6; /* IP6 options for outgoing packets */ int inp_hops; union { struct ip_moptions *mou_mo; /* IPv4 multicast options */ struct ip6_moptions *mou_mo6; /* IPv6 multicast options */ } inp_mou; #define inp_moptions inp_mou.mou_mo #define inp_moptions6 inp_mou.mou_mo6 u_char inp_seclevel[4]; #define SL_AUTH 0 /* Authentication level */ #define SL_ESP_TRANS 1 /* ESP transport level */ #define SL_ESP_NETWORK 2 /* ESP network (encapsulation) level */ #define SL_IPCOMP 3 /* Compression level */ u_char inp_ip_minttl; /* minimum TTL or drop */ #define inp_ip6_minhlim inp_ip_minttl /* minimum Hop Limit or drop */ #define inp_flowinfo inp_hu.hu_ipv6.ip6_flow int inp_cksum6; #ifndef _KERNEL #define inp_csumoffset inp_cksum6 #endif struct icmp6_filter *inp_icmp6filt; struct pf_state_key *inp_pf_sk; struct mbuf *(*inp_upcall)(void *, struct mbuf *, struct ip *, struct ip6_hdr *, void *, int); void *inp_upcall_arg; u_int inp_rtableid; int inp_pipex; /* pipex indication */ uint16_t inp_flowid; }; LIST_HEAD(inpcbhead, inpcb); struct inpcbtable { TAILQ_HEAD(inpthead, inpcb) inpt_queue; /* inet PCB queue */ struct inpcbhead *inpt_hashtbl; /* local and foreign hash */ struct inpcbhead *inpt_lhashtbl; /* local port hash */ SIPHASH_KEY inpt_key, inpt_lkey; /* secrets for hashes */ u_long inpt_mask, inpt_lmask; /* hash masks */ int inpt_count, inpt_size; /* queue count, hash size */ }; /* flags in inp_flags: */ #define INP_RECVOPTS 0x001 /* receive incoming IP options */ #define INP_RECVRETOPTS 0x002 /* receive IP options for reply */ #define INP_RECVDSTADDR 0x004 /* receive IP dst address */ #define INP_RXDSTOPTS INP_RECVOPTS #define INP_RXHOPOPTS INP_RECVRETOPTS #define INP_RXINFO INP_RECVDSTADDR #define INP_RXSRCRT 0x010 #define INP_HOPLIMIT 0x020 #define INP_HDRINCL 0x008 /* user supplies entire IP header */ #define INP_HIGHPORT 0x010 /* user wants "high" port binding */ #define INP_LOWPORT 0x020 /* user wants "low" port binding */ #define INP_RECVIF 0x080 /* receive incoming interface */ #define INP_RECVTTL 0x040 /* receive incoming IP TTL */ #define INP_RECVDSTPORT 0x200 /* receive IP dst addr before rdr */ #define INP_RECVRTABLE 0x400 /* receive routing table */ #define INP_IPSECFLOWINFO 0x800 /* receive IPsec flow info */ #define INP_CONTROLOPTS (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR| \ INP_RXSRCRT|INP_HOPLIMIT|INP_RECVIF|INP_RECVTTL|INP_RECVDSTPORT| \ INP_RECVRTABLE) /* * These flags' values should be determined by either the transport * protocol at PRU_BIND, PRU_LISTEN, PRU_CONNECT, etc, or by in_pcb*(). */ #define INP_IPV6 0x100 /* sotopf(inp->inp_socket) == PF_INET6 */ /* * Flags in inp_flags for IPV6 */ #define IN6P_HIGHPORT INP_HIGHPORT /* user wants "high" port */ #define IN6P_LOWPORT INP_LOWPORT /* user wants "low" port */ #define IN6P_RECVDSTPORT INP_RECVDSTPORT /* receive IP dst addr before rdr */ #define IN6P_PKTINFO 0x010000 /* receive IP6 dst and I/F */ #define IN6P_HOPLIMIT 0x020000 /* receive hoplimit */ #define IN6P_HOPOPTS 0x040000 /* receive hop-by-hop options */ #define IN6P_DSTOPTS 0x080000 /* receive dst options after rthdr */ #define IN6P_RTHDR 0x100000 /* receive routing header */ #define IN6P_TCLASS 0x400000 /* receive traffic class value */ #define IN6P_AUTOFLOWLABEL 0x800000 /* attach flowlabel automatically */ #define IN6P_ANONPORT 0x4000000 /* port chosen for user */ #define IN6P_RFC2292 0x40000000 /* used RFC2292 API on the socket */ #define IN6P_MTU 0x80000000 /* receive path MTU */ #define IN6P_MINMTU 0x20000000 /* use minimum MTU */ #define IN6P_CONTROLOPTS (IN6P_PKTINFO|IN6P_HOPLIMIT|IN6P_HOPOPTS|\ IN6P_DSTOPTS|IN6P_RTHDR|\ IN6P_TCLASS|IN6P_AUTOFLOWLABEL|IN6P_RFC2292|\ IN6P_MTU|IN6P_RECVDSTPORT) #define INPLOOKUP_WILDCARD 1 #define INPLOOKUP_SETLOCAL 2 #define INPLOOKUP_IPV6 4 #define sotoinpcb(so) ((struct inpcb *)(so)->so_pcb) /* macros for handling bitmap of ports not to allocate dynamically */ #define DP_MAPBITS (sizeof(u_int32_t) * NBBY) #define DP_MAPSIZE (howmany(65536, DP_MAPBITS)) #define DP_SET(m, p) ((m)[(p) / DP_MAPBITS] |= (1U << ((p) % DP_MAPBITS))) #define DP_CLR(m, p) ((m)[(p) / DP_MAPBITS] &= ~(1U << ((p) % DP_MAPBITS))) #define DP_ISSET(m, p) ((m)[(p) / DP_MAPBITS] & (1U << ((p) % DP_MAPBITS))) /* default values for baddynamicports [see ip_init()] */ #define DEFBADDYNAMICPORTS_TCP { \ 587, 749, 750, 751, 853, 871, 2049, \ 6000, 6001, 6002, 6003, 6004, 6005, 6006, 6007, 6008, 6009, 6010, \ 0 } #define DEFBADDYNAMICPORTS_UDP { 623, 664, 749, 750, 751, 2049, \ 3784, 3785, 7784, /* BFD/S-BFD ports */ \ 0 } #define DEFROOTONLYPORTS_TCP { \ 2049, \ 0 } #define DEFROOTONLYPORTS_UDP { \ 2049, \ 0 } struct baddynamicports { u_int32_t tcp[DP_MAPSIZE]; u_int32_t udp[DP_MAPSIZE]; }; #ifdef _KERNEL extern struct inpcbtable rawcbtable, rawin6pcbtable; extern struct baddynamicports baddynamicports; extern struct baddynamicports rootonlyports; extern int in_pcbnotifymiss; #define sotopf(so) (so->so_proto->pr_domain->dom_family) void in_init(void); void in_losing(struct inpcb *); int in_pcballoc(struct socket *, struct inpcbtable *); int in_pcbbind(struct inpcb *, struct mbuf *, struct proc *); int in_pcbaddrisavail(struct inpcb *, struct sockaddr_in *, int, struct proc *); int in_pcbconnect(struct inpcb *, struct mbuf *); void in_pcbdetach(struct inpcb *); struct inpcb * in_pcbref(struct inpcb *); void in_pcbunref(struct inpcb *); void in_pcbdisconnect(struct inpcb *); struct inpcb * in_pcbhashlookup(struct inpcbtable *, struct in_addr, u_int, struct in_addr, u_int, u_int); struct inpcb * in_pcblookup_listen(struct inpcbtable *, struct in_addr, u_int, struct mbuf *, u_int); #ifdef INET6 struct inpcbhead * in6_pcbhash(struct inpcbtable *, int, const struct in6_addr *, u_short, const struct in6_addr *, u_short); struct inpcb * in6_pcbhashlookup(struct inpcbtable *, const struct in6_addr *, u_int, const struct in6_addr *, u_int, u_int); struct inpcb * in6_pcblookup_listen(struct inpcbtable *, struct in6_addr *, u_int, struct mbuf *, u_int); int in6_pcbaddrisavail(struct inpcb *, struct sockaddr_in6 *, int, struct proc *); int in6_pcbconnect(struct inpcb *, struct mbuf *); void in6_setsockaddr(struct inpcb *, struct mbuf *); void in6_setpeeraddr(struct inpcb *, struct mbuf *); #endif /* INET6 */ void in_pcbinit(struct inpcbtable *, int); struct inpcb * in_pcblookup_local(struct inpcbtable *, void *, u_int, int, u_int); void in_pcbnotifyall(struct inpcbtable *, struct sockaddr *, u_int, int, void (*)(struct inpcb *, int)); void in_pcbrehash(struct inpcb *); void in_rtchange(struct inpcb *, int); void in_setpeeraddr(struct inpcb *, struct mbuf *); void in_setsockaddr(struct inpcb *, struct mbuf *); int in_baddynamic(u_int16_t, u_int16_t); int in_rootonly(u_int16_t, u_int16_t); int in_pcbselsrc(struct in_addr **, struct sockaddr_in *, struct inpcb *); struct rtentry * in_pcbrtentry(struct inpcb *); /* INET6 stuff */ int in6_pcbnotify(struct inpcbtable *, struct sockaddr_in6 *, u_int, const struct sockaddr_in6 *, u_int, u_int, int, void *, void (*)(struct inpcb *, int)); int in6_selecthlim(struct inpcb *); int in_pcbpickport(u_int16_t *, void *, int, struct inpcb *, struct proc *); #endif /* _KERNEL */ #endif /* _NETINET_IN_PCB_H_ */