/* * 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. 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 * $FreeBSD$ */ #ifndef _NETINET_IN_PCB_H_ #define _NETINET_IN_PCB_H_ #include #include #include #include #define in6pcb inpcb /* for KAME src sync over BSD*'s */ #define in6p_sp inp_sp /* for KAME src sync over BSD*'s */ struct inpcbpolicy; /* * 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. */ LIST_HEAD(inpcbhead, inpcb); LIST_HEAD(inpcbporthead, inpcbport); typedef u_quad_t inp_gen_t; /* * PCB with AF_INET6 null bind'ed laddr can receive AF_INET input packet. * So, AF_INET6 null laddr is also used as AF_INET null laddr, * by utilize following structure. (At last, same as INRIA) */ struct in_addr_4in6 { u_int32_t ia46_pad32[3]; struct in_addr ia46_addr4; }; /* * NOTE: ipv6 addrs should be 64-bit aligned, per RFC 2553. * in_conninfo has some extra padding to accomplish this. */ struct in_endpoints { u_int16_t ie_fport; /* foreign port */ u_int16_t ie_lport; /* local port */ /* protocol dependent part, local and foreign addr */ union { /* foreign host table entry */ struct in_addr_4in6 ie46_foreign; struct in6_addr ie6_foreign; } ie_dependfaddr; union { /* local host table entry */ struct in_addr_4in6 ie46_local; struct in6_addr ie6_local; } ie_dependladdr; #define ie_faddr ie_dependfaddr.ie46_foreign.ia46_addr4 #define ie_laddr ie_dependladdr.ie46_local.ia46_addr4 #define ie6_faddr ie_dependfaddr.ie6_foreign #define ie6_laddr ie_dependladdr.ie6_local }; /* * XXX * At some point struct route should possibly change to: * struct rtentry *rt * struct in_endpoints *ie; */ struct in_conninfo { u_int8_t inc_flags; u_int8_t inc_len; u_int16_t inc_pad; /* XXX alignment for in_endpoints */ /* protocol dependent part; cached route */ struct in_endpoints inc_ie; union { /* placeholder for routing entry */ struct route inc4_route; struct route_in6 inc6_route; } inc_dependroute; }; #define inc_isipv6 inc_flags /* temp compatability */ #define inc_fport inc_ie.ie_fport #define inc_lport inc_ie.ie_lport #define inc_faddr inc_ie.ie_faddr #define inc_laddr inc_ie.ie_laddr #define inc_route inc_dependroute.inc4_route #define inc6_faddr inc_ie.ie6_faddr #define inc6_laddr inc_ie.ie6_laddr #define inc6_route inc_dependroute.inc6_route struct icmp6_filter; struct inpcb { LIST_ENTRY(inpcb) inp_hash; /* hash list */ LIST_ENTRY(inpcb) inp_list; /* list for all PCBs of this proto */ u_int32_t inp_flow; /* local and foreign ports, local and foreign addr */ struct in_conninfo inp_inc; caddr_t inp_ppcb; /* pointer to per-protocol pcb */ struct inpcbinfo *inp_pcbinfo; /* PCB list info */ struct socket *inp_socket; /* back pointer to socket */ /* list for this PCB's local port */ int inp_flags; /* generic IP/datagram flags */ struct inpcbpolicy *inp_sp; /* for IPSEC */ u_char inp_vflag; /* IP version flag (v4/v6) */ #define INP_IPV4 0x1 #define INP_IPV6 0x2 #define INP_IPV6PROTO 0x4 /* opened under IPv6 protocol */ #define INP_TIMEWAIT 0x8 /* .. probably doesn't go here */ #define INP_ONESBCAST 0x10 /* send all-ones broadcast */ u_char inp_ip_ttl; /* time to live proto */ u_char inp_ip_p; /* protocol proto */ /* protocol dependent part; options */ struct { u_char inp4_ip_tos; /* type of service proto */ struct mbuf *inp4_options; /* IP options */ struct ip_moptions *inp4_moptions; /* IP multicast options */ } inp_depend4; #define inp_fport inp_inc.inc_fport #define inp_lport inp_inc.inc_lport #define inp_faddr inp_inc.inc_faddr #define inp_laddr inp_inc.inc_laddr #define inp_route inp_inc.inc_route #define inp_ip_tos inp_depend4.inp4_ip_tos #define inp_options inp_depend4.inp4_options #define inp_moptions inp_depend4.inp4_moptions struct { /* IP options */ struct mbuf *inp6_options; /* IP6 options for outgoing packets */ struct ip6_pktopts *inp6_outputopts; /* IP multicast options */ struct ip6_moptions *inp6_moptions; /* ICMPv6 code type filter */ struct icmp6_filter *inp6_icmp6filt; /* IPV6_CHECKSUM setsockopt */ int inp6_cksum; u_short inp6_ifindex; short inp6_hops; } inp_depend6; LIST_ENTRY(inpcb) inp_portlist; struct inpcbport *inp_phd; /* head of this list */ inp_gen_t inp_gencnt; /* generation count of this instance */ struct mtx inp_mtx; #define in6p_faddr inp_inc.inc6_faddr #define in6p_laddr inp_inc.inc6_laddr #define in6p_route inp_inc.inc6_route #define in6p_hops inp_depend6.inp6_hops /* default hop limit */ #define in6p_ip6_nxt inp_ip_p #define in6p_flowinfo inp_flow #define in6p_vflag inp_vflag #define in6p_options inp_depend6.inp6_options #define in6p_outputopts inp_depend6.inp6_outputopts #define in6p_moptions inp_depend6.inp6_moptions #define in6p_icmp6filt inp_depend6.inp6_icmp6filt #define in6p_cksum inp_depend6.inp6_cksum #define inp6_ifindex inp_depend6.inp6_ifindex #define in6p_flags inp_flags /* for KAME src sync over BSD*'s */ #define in6p_socket inp_socket /* for KAME src sync over BSD*'s */ #define in6p_lport inp_lport /* for KAME src sync over BSD*'s */ #define in6p_fport inp_fport /* for KAME src sync over BSD*'s */ #define in6p_ppcb inp_ppcb /* for KAME src sync over BSD*'s */ }; /* * The range of the generation count, as used in this implementation, * is 9e19. We would have to create 300 billion connections per * second for this number to roll over in a year. This seems sufficiently * unlikely that we simply don't concern ourselves with that possibility. */ /* * Interface exported to userland by various protocols which use * inpcbs. Hack alert -- only define if struct xsocket is in scope. */ #ifdef _SYS_SOCKETVAR_H_ struct xinpcb { size_t xi_len; /* length of this structure */ struct inpcb xi_inp; struct xsocket xi_socket; u_quad_t xi_alignment_hack; }; struct xinpgen { size_t xig_len; /* length of this structure */ u_int xig_count; /* number of PCBs at this time */ inp_gen_t xig_gen; /* generation count at this time */ so_gen_t xig_sogen; /* socket generation count at this time */ }; #endif /* _SYS_SOCKETVAR_H_ */ struct inpcbport { LIST_ENTRY(inpcbport) phd_hash; struct inpcbhead phd_pcblist; u_short phd_port; }; struct inpcbinfo { /* XXX documentation, prefixes */ struct inpcbhead *hashbase; u_long hashmask; struct inpcbporthead *porthashbase; u_long porthashmask; struct inpcbhead *listhead; u_short lastport; u_short lastlow; u_short lasthi; struct uma_zone *ipi_zone; /* zone to allocate pcbs from */ u_int ipi_count; /* number of pcbs in this list */ u_quad_t ipi_gencnt; /* current generation count */ struct mtx ipi_mtx; }; /* * NB: We cannot enable assertions when IPv6 is configured as * this code is shared by both IPv4 and IPv6 and IPv6 is * not properly locked. */ #define INP_LOCK_INIT(inp, d) \ mtx_init(&(inp)->inp_mtx, (d), NULL, MTX_DEF | MTX_RECURSE | MTX_DUPOK) #define INP_LOCK_DESTROY(inp) mtx_destroy(&(inp)->inp_mtx) #define INP_LOCK(inp) mtx_lock(&(inp)->inp_mtx) #define INP_UNLOCK(inp) mtx_unlock(&(inp)->inp_mtx) #ifndef INET6 #define INP_LOCK_ASSERT(inp) mtx_assert(&(inp)->inp_mtx, MA_OWNED) #else #define INP_LOCK_ASSERT(inp) #endif #define INP_INFO_LOCK_INIT(ipi, d) \ mtx_init(&(ipi)->ipi_mtx, (d), NULL, MTX_DEF | MTX_RECURSE) #define INP_INFO_RLOCK(ipi) mtx_lock(&(ipi)->ipi_mtx) #define INP_INFO_WLOCK(ipi) mtx_lock(&(ipi)->ipi_mtx) #define INP_INFO_RUNLOCK(ipi) mtx_unlock(&(ipi)->ipi_mtx) #define INP_INFO_WUNLOCK(ipi) mtx_unlock(&(ipi)->ipi_mtx) #ifndef INET6 #define INP_INFO_RLOCK_ASSERT(ipi) mtx_assert(&(ipi)->ipi_mtx, MA_OWNED) #define INP_INFO_WLOCK_ASSERT(ipi) mtx_assert(&(ipi)->ipi_mtx, MA_OWNED) #else #define INP_INFO_RLOCK_ASSERT(ipi) #define INP_INFO_WLOCK_ASSERT(ipi) #endif #define INP_PCBHASH(faddr, lport, fport, mask) \ (((faddr) ^ ((faddr) >> 16) ^ ntohs((lport) ^ (fport))) & (mask)) #define INP_PCBPORTHASH(lport, mask) \ (ntohs((lport)) & (mask)) /* flags in inp_flags: */ #define INP_RECVOPTS 0x01 /* receive incoming IP options */ #define INP_RECVRETOPTS 0x02 /* receive IP options for reply */ #define INP_RECVDSTADDR 0x04 /* receive IP dst address */ #define INP_HDRINCL 0x08 /* user supplies entire IP header */ #define INP_HIGHPORT 0x10 /* user wants "high" port binding */ #define INP_LOWPORT 0x20 /* user wants "low" port binding */ #define INP_ANONPORT 0x40 /* port chosen for user */ #define INP_RECVIF 0x80 /* receive incoming interface */ #define INP_MTUDISC 0x100 /* user can do MTU discovery */ #define INP_FAITH 0x200 /* accept FAITH'ed connections */ #define INP_RECVTTL 0x400 /* receive incoming IP TTL */ #define IN6P_IPV6_V6ONLY 0x008000 /* restrict AF_INET6 socket for v6 */ #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_RTHDRDSTOPTS 0x200000 /* receive dstoptions before rthdr */ #define IN6P_TCLASS 0x400000 /* receive traffic class value */ #define IN6P_AUTOFLOWLABEL 0x800000 /* attach flowlabel automatically */ #define IN6P_RFC2292 0x40000000 /* used RFC2292 API on the socket */ #define IN6P_MTU 0x80000000 /* receive path MTU */ #define INP_CONTROLOPTS (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR|\ INP_RECVIF|INP_RECVTTL|\ IN6P_PKTINFO|IN6P_HOPLIMIT|IN6P_HOPOPTS|\ IN6P_DSTOPTS|IN6P_RTHDR|IN6P_RTHDRDSTOPTS|\ IN6P_TCLASS|IN6P_AUTOFLOWLABEL|IN6P_RFC2292|\ IN6P_MTU) #define INP_UNMAPPABLEOPTS (IN6P_HOPOPTS|IN6P_DSTOPTS|IN6P_RTHDR|\ IN6P_TCLASS|IN6P_AUTOFLOWLABEL) /* for KAME src sync over BSD*'s */ #define IN6P_HIGHPORT INP_HIGHPORT #define IN6P_LOWPORT INP_LOWPORT #define IN6P_ANONPORT INP_ANONPORT #define IN6P_RECVIF INP_RECVIF #define IN6P_MTUDISC INP_MTUDISC #define IN6P_FAITH INP_FAITH #define IN6P_CONTROLOPTS INP_CONTROLOPTS /* * socket AF version is {newer than,or include} * actual datagram AF version */ #define INPLOOKUP_WILDCARD 1 #define sotoinpcb(so) ((struct inpcb *)(so)->so_pcb) #define sotoin6pcb(so) sotoinpcb(so) /* for KAME src sync over BSD*'s */ #define INP_SOCKAF(so) so->so_proto->pr_domain->dom_family #define INP_CHECK_SOCKAF(so, af) (INP_SOCKAF(so) == af) #ifdef _KERNEL extern int ipport_lowfirstauto; extern int ipport_lowlastauto; extern int ipport_firstauto; extern int ipport_lastauto; extern int ipport_hifirstauto; extern int ipport_hilastauto; void in_pcbpurgeif0(struct inpcbinfo *, struct ifnet *); void in_losing(struct inpcb *); struct inpcb * in_rtchange(struct inpcb *, int); int in_pcballoc(struct socket *, struct inpcbinfo *, struct thread *); int in_pcbbind(struct inpcb *, struct sockaddr *, struct thread *); int in_pcbbind_setup(struct inpcb *, struct sockaddr *, in_addr_t *, u_short *, struct thread *); int in_pcbconnect(struct inpcb *, struct sockaddr *, struct thread *); int in_pcbconnect_setup(struct inpcb *, struct sockaddr *, in_addr_t *, u_short *, in_addr_t *, u_short *, struct inpcb **, struct thread *); void in_pcbdetach(struct inpcb *); void in_pcbdisconnect(struct inpcb *); int in_pcbinshash(struct inpcb *); struct inpcb * in_pcblookup_local(struct inpcbinfo *, struct in_addr, u_int, int); struct inpcb * in_pcblookup_hash(struct inpcbinfo *, struct in_addr, u_int, struct in_addr, u_int, int, struct ifnet *); void in_pcbnotifyall(struct inpcbinfo *pcbinfo, struct in_addr, int, struct inpcb *(*)(struct inpcb *, int)); void in_pcbrehash(struct inpcb *); int in_setpeeraddr(struct socket *so, struct sockaddr **nam, struct inpcbinfo *pcbinfo); int in_setsockaddr(struct socket *so, struct sockaddr **nam, struct inpcbinfo *pcbinfo);; struct sockaddr * in_sockaddr(in_port_t port, struct in_addr *addr); void in_pcbremlists(struct inpcb *inp); int prison_xinpcb(struct thread *td, struct inpcb *inp); #endif /* _KERNEL */ #endif /* !_NETINET_IN_PCB_H_ */