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Diffstat (limited to 'c/src/libnetworking/netinet/in.h')
| -rw-r--r-- | c/src/libnetworking/netinet/in.h | 433 |
1 files changed, 433 insertions, 0 deletions
diff --git a/c/src/libnetworking/netinet/in.h b/c/src/libnetworking/netinet/in.h new file mode 100644 index 0000000000..ba3cbb21cc --- /dev/null +++ b/c/src/libnetworking/netinet/in.h @@ -0,0 +1,433 @@ +/* + * 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.h 8.3 (Berkeley) 1/3/94 + * $Id$ + */ + +#ifndef _NETINET_IN_H_ +#define _NETINET_IN_H_ + +/* + * Constants and structures defined by the internet system, + * Per RFC 790, September 1981, and numerous additions. + */ + +/* + * Protocols (RFC 1700) + */ +#define IPPROTO_IP 0 /* dummy for IP */ +#define IPPROTO_ICMP 1 /* control message protocol */ +#define IPPROTO_IGMP 2 /* group mgmt protocol */ +#define IPPROTO_GGP 3 /* gateway^2 (deprecated) */ +#define IPPROTO_IPIP 4 /* IP encapsulation in IP */ +#define IPPROTO_TCP 6 /* tcp */ +#define IPPROTO_ST 7 /* Stream protocol II */ +#define IPPROTO_EGP 8 /* exterior gateway protocol */ +#define IPPROTO_PIGP 9 /* private interior gateway */ +#define IPPROTO_RCCMON 10 /* BBN RCC Monitoring */ +#define IPPROTO_NVPII 11 /* network voice protocol*/ +#define IPPROTO_PUP 12 /* pup */ +#define IPPROTO_ARGUS 13 /* Argus */ +#define IPPROTO_EMCON 14 /* EMCON */ +#define IPPROTO_XNET 15 /* Cross Net Debugger */ +#define IPPROTO_CHAOS 16 /* Chaos*/ +#define IPPROTO_UDP 17 /* user datagram protocol */ +#define IPPROTO_MUX 18 /* Multiplexing */ +#define IPPROTO_MEAS 19 /* DCN Measurement Subsystems */ +#define IPPROTO_HMP 20 /* Host Monitoring */ +#define IPPROTO_PRM 21 /* Packet Radio Measurement */ +#define IPPROTO_IDP 22 /* xns idp */ +#define IPPROTO_TRUNK1 23 /* Trunk-1 */ +#define IPPROTO_TRUNK2 24 /* Trunk-2 */ +#define IPPROTO_LEAF1 25 /* Leaf-1 */ +#define IPPROTO_LEAF2 26 /* Leaf-2 */ +#define IPPROTO_RDP 27 /* Reliable Data */ +#define IPPROTO_IRTP 28 /* Reliable Transaction */ +#define IPPROTO_TP 29 /* tp-4 w/ class negotiation */ +#define IPPROTO_BLT 30 /* Bulk Data Transfer */ +#define IPPROTO_NSP 31 /* Network Services */ +#define IPPROTO_INP 32 /* Merit Internodal */ +#define IPPROTO_SEP 33 /* Sequential Exchange */ +#define IPPROTO_3PC 34 /* Third Party Connect */ +#define IPPROTO_IDPR 35 /* InterDomain Policy Routing */ +#define IPPROTO_XTP 36 /* XTP */ +#define IPPROTO_DDP 37 /* Datagram Delivery */ +#define IPPROTO_CMTP 38 /* Control Message Transport */ +#define IPPROTO_TPXX 39 /* TP++ Transport */ +#define IPPROTO_IL 40 /* IL transport protocol */ +#define IPPROTO_SIP 41 /* Simple Internet Protocol */ +#define IPPROTO_SDRP 42 /* Source Demand Routing */ +#define IPPROTO_SIPSR 43 /* SIP Source Route */ +#define IPPROTO_SIPFRAG 44 /* SIP Fragment */ +#define IPPROTO_IDRP 45 /* InterDomain Routing*/ +#define IPPROTO_RSVP 46 /* resource reservation */ +#define IPPROTO_GRE 47 /* General Routing Encap. */ +#define IPPROTO_MHRP 48 /* Mobile Host Routing */ +#define IPPROTO_BHA 49 /* BHA */ +#define IPPROTO_ESP 50 /* SIPP Encap Sec. Payload */ +#define IPPROTO_AH 51 /* SIPP Auth Header */ +#define IPPROTO_INLSP 52 /* Integ. Net Layer Security */ +#define IPPROTO_SWIPE 53 /* IP with encryption */ +#define IPPROTO_NHRP 54 /* Next Hop Resolution */ +/* 55-60: Unassigned */ +#define IPPROTO_AHIP 61 /* any host internal protocol */ +#define IPPROTO_CFTP 62 /* CFTP */ +#define IPPROTO_HELLO 63 /* "hello" routing protocol */ +#define IPPROTO_SATEXPAK 64 /* SATNET/Backroom EXPAK */ +#define IPPROTO_KRYPTOLAN 65 /* Kryptolan */ +#define IPPROTO_RVD 66 /* Remote Virtual Disk */ +#define IPPROTO_IPPC 67 /* Pluribus Packet Core */ +#define IPPROTO_ADFS 68 /* Any distributed FS */ +#define IPPROTO_SATMON 69 /* Satnet Monitoring */ +#define IPPROTO_VISA 70 /* VISA Protocol */ +#define IPPROTO_IPCV 71 /* Packet Core Utility */ +#define IPPROTO_CPNX 72 /* Comp. Prot. Net. Executive */ +#define IPPROTO_CPHB 73 /* Comp. Prot. HeartBeat */ +#define IPPROTO_WSN 74 /* Wang Span Network */ +#define IPPROTO_PVP 75 /* Packet Video Protocol */ +#define IPPROTO_BRSATMON 76 /* BackRoom SATNET Monitoring */ +#define IPPROTO_ND 77 /* Sun net disk proto (temp.) */ +#define IPPROTO_WBMON 78 /* WIDEBAND Monitoring */ +#define IPPROTO_WBEXPAK 79 /* WIDEBAND EXPAK */ +#define IPPROTO_EON 80 /* ISO cnlp */ +#define IPPROTO_VMTP 81 /* VMTP */ +#define IPPROTO_SVMTP 82 /* Secure VMTP */ +#define IPPROTO_VINES 83 /* Banyon VINES */ +#define IPPROTO_TTP 84 /* TTP */ +#define IPPROTO_IGP 85 /* NSFNET-IGP */ +#define IPPROTO_DGP 86 /* dissimilar gateway prot. */ +#define IPPROTO_TCF 87 /* TCF */ +#define IPPROTO_IGRP 88 /* Cisco/GXS IGRP */ +#define IPPROTO_OSPFIGP 89 /* OSPFIGP */ +#define IPPROTO_SRPC 90 /* Strite RPC protocol */ +#define IPPROTO_LARP 91 /* Locus Address Resoloution */ +#define IPPROTO_MTP 92 /* Multicast Transport */ +#define IPPROTO_AX25 93 /* AX.25 Frames */ +#define IPPROTO_IPEIP 94 /* IP encapsulated in IP */ +#define IPPROTO_MICP 95 /* Mobile Int.ing control */ +#define IPPROTO_SCCSP 96 /* Semaphore Comm. security */ +#define IPPROTO_ETHERIP 97 /* Ethernet IP encapsulation */ +#define IPPROTO_ENCAP 98 /* encapsulation header */ +#define IPPROTO_APES 99 /* any private encr. scheme */ +#define IPPROTO_GMTP 100 /* GMTP*/ +/* 101-254: Unassigned */ +/* 255: Reserved */ +/* BSD Private, local use, namespace incursion */ +#define IPPROTO_DIVERT 254 /* divert pseudo-protocol */ +#define IPPROTO_RAW 255 /* raw IP packet */ +#define IPPROTO_MAX 256 + + +/* + * Local port number conventions: + * + * When a user does a bind(2) or connect(2) with a port number of zero, + * a non-conflicting local port address is chosen. + * The default range is IPPORT_RESERVED through + * IPPORT_USERRESERVED, although that is settable by sysctl. + * + * A user may set the IPPROTO_IP option IP_PORTRANGE to change this + * default assignment range. + * + * The value IP_PORTRANGE_DEFAULT causes the default behavior. + * + * The value IP_PORTRANGE_HIGH changes the range of candidate port numbers + * into the "high" range. These are reserved for client outbound connections + * which do not want to be filtered by any firewalls. + * + * The value IP_PORTRANGE_LOW changes the range to the "low" are + * that is (by convention) restricted to privileged processes. This + * convention is based on "vouchsafe" principles only. It is only secure + * if you trust the remote host to restrict these ports. + * + * The default range of ports and the high range can be changed by + * sysctl(3). (net.inet.ip.port{hi,low}{first,last}_auto) + * + * Changing those values has bad security implications if you are + * using a a stateless firewall that is allowing packets outside of that + * range in order to allow transparent outgoing connections. + * + * Such a firewall configuration will generally depend on the use of these + * default values. If you change them, you may find your Security + * Administrator looking for you with a heavy object. + */ + +/* + * Ports < IPPORT_RESERVED are reserved for + * privileged processes (e.g. root). (IP_PORTRANGE_LOW) + * Ports > IPPORT_USERRESERVED are reserved + * for servers, not necessarily privileged. (IP_PORTRANGE_DEFAULT) + */ +#define IPPORT_RESERVED 1024 +#define IPPORT_USERRESERVED 5000 + +/* + * Default local port range to use by setting IP_PORTRANGE_HIGH + */ +#define IPPORT_HIFIRSTAUTO 40000 +#define IPPORT_HILASTAUTO 44999 + +/* + * Scanning for a free reserved port return a value below IPPORT_RESERVED, + * but higher than IPPORT_RESERVEDSTART. Traditionally the start value was + * 512, but that conflicts with some well-known-services that firewalls may + * have a fit if we use. + */ +#define IPPORT_RESERVEDSTART 600 + +/* + * Internet address (a structure for historical reasons) + */ +struct in_addr { + u_long s_addr; +}; + +/* + * Definitions of bits in internet address integers. + * On subnets, the decomposition of addresses to host and net parts + * is done according to subnet mask, not the masks here. + */ +#define IN_CLASSA(i) (((long)(i) & 0x80000000) == 0) +#define IN_CLASSA_NET 0xff000000 +#define IN_CLASSA_NSHIFT 24 +#define IN_CLASSA_HOST 0x00ffffff +#define IN_CLASSA_MAX 128 + +#define IN_CLASSB(i) (((long)(i) & 0xc0000000) == 0x80000000) +#define IN_CLASSB_NET 0xffff0000 +#define IN_CLASSB_NSHIFT 16 +#define IN_CLASSB_HOST 0x0000ffff +#define IN_CLASSB_MAX 65536 + +#define IN_CLASSC(i) (((long)(i) & 0xe0000000) == 0xc0000000) +#define IN_CLASSC_NET 0xffffff00 +#define IN_CLASSC_NSHIFT 8 +#define IN_CLASSC_HOST 0x000000ff + +#define IN_CLASSD(i) (((long)(i) & 0xf0000000) == 0xe0000000) +#define IN_CLASSD_NET 0xf0000000 /* These ones aren't really */ +#define IN_CLASSD_NSHIFT 28 /* net and host fields, but */ +#define IN_CLASSD_HOST 0x0fffffff /* routing needn't know. */ +#define IN_MULTICAST(i) IN_CLASSD(i) + +#define IN_EXPERIMENTAL(i) (((long)(i) & 0xf0000000) == 0xf0000000) +#define IN_BADCLASS(i) (((long)(i) & 0xf0000000) == 0xf0000000) + +#define INADDR_ANY (u_long)0x00000000 +#define INADDR_BROADCAST (u_long)0xffffffff /* must be masked */ +#ifndef KERNEL +#define INADDR_NONE 0xffffffff /* -1 return */ +#endif + +#define INADDR_UNSPEC_GROUP (u_long)0xe0000000 /* 224.0.0.0 */ +#define INADDR_ALLHOSTS_GROUP (u_long)0xe0000001 /* 224.0.0.1 */ +#define INADDR_ALLRTRS_GROUP (u_long)0xe0000002 /* 224.0.0.2 */ +#define INADDR_MAX_LOCAL_GROUP (u_long)0xe00000ff /* 224.0.0.255 */ + +#define IN_LOOPBACKNET 127 /* official! */ + +/* + * Socket address, internet style. + */ +struct sockaddr_in { + u_char sin_len; + u_char sin_family; + u_short sin_port; + struct in_addr sin_addr; + char sin_zero[8]; +}; + +/* + * Structure used to describe IP options. + * Used to store options internally, to pass them to a process, + * or to restore options retrieved earlier. + * The ip_dst is used for the first-hop gateway when using a source route + * (this gets put into the header proper). + */ +struct ip_opts { + struct in_addr ip_dst; /* first hop, 0 w/o src rt */ + char ip_opts[40]; /* actually variable in size */ +}; + +/* + * Options for use with [gs]etsockopt at the IP level. + * First word of comment is data type; bool is stored in int. + */ +#define IP_OPTIONS 1 /* buf/ip_opts; set/get IP options */ +#define IP_HDRINCL 2 /* int; header is included with data */ +#define IP_TOS 3 /* int; IP type of service and preced. */ +#define IP_TTL 4 /* int; IP time to live */ +#define IP_RECVOPTS 5 /* bool; receive all IP opts w/dgram */ +#define IP_RECVRETOPTS 6 /* bool; receive IP opts for response */ +#define IP_RECVDSTADDR 7 /* bool; receive IP dst addr w/dgram */ +#define IP_RETOPTS 8 /* ip_opts; set/get IP options */ +#define IP_MULTICAST_IF 9 /* u_char; set/get IP multicast i/f */ +#define IP_MULTICAST_TTL 10 /* u_char; set/get IP multicast ttl */ +#define IP_MULTICAST_LOOP 11 /* u_char; set/get IP multicast loopback */ +#define IP_ADD_MEMBERSHIP 12 /* ip_mreq; add an IP group membership */ +#define IP_DROP_MEMBERSHIP 13 /* ip_mreq; drop an IP group membership */ +#define IP_MULTICAST_VIF 14 /* set/get IP mcast virt. iface */ +#define IP_RSVP_ON 15 /* enable RSVP in kernel */ +#define IP_RSVP_OFF 16 /* disable RSVP in kernel */ +#define IP_RSVP_VIF_ON 17 /* set RSVP per-vif socket */ +#define IP_RSVP_VIF_OFF 18 /* unset RSVP per-vif socket */ +#define IP_PORTRANGE 19 /* int; range to choose for unspec port */ +#define IP_RECVIF 20 /* bool; receive reception if w/dgram */ + +#define IP_FW_ADD 50 /* add a firewall rule to chain */ +#define IP_FW_DEL 51 /* delete a firewall rule from chain */ +#define IP_FW_FLUSH 52 /* flush firewall rule chain */ +#define IP_FW_ZERO 53 /* clear single/all firewall counter(s) */ +#define IP_FW_GET 54 /* get entire firewall rule chain */ +#define IP_NAT 55 /* set/get NAT opts */ + +/* + * Defaults and limits for options + */ +#define IP_DEFAULT_MULTICAST_TTL 1 /* normally limit m'casts to 1 hop */ +#define IP_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */ +#define IP_MAX_MEMBERSHIPS 20 /* per socket */ + +/* + * Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP. + */ +struct ip_mreq { + struct in_addr imr_multiaddr; /* IP multicast address of group */ + struct in_addr imr_interface; /* local IP address of interface */ +}; + +/* + * Argument for IP_PORTRANGE: + * - which range to search when port is unspecified at bind() or connect() + */ +#define IP_PORTRANGE_DEFAULT 0 /* default range */ +#define IP_PORTRANGE_HIGH 1 /* "high" - request firewall bypass */ +#define IP_PORTRANGE_LOW 2 /* "low" - vouchsafe security */ + +/* + * Definitions for inet sysctl operations. + * + * Third level is protocol number. + * Fourth level is desired variable within that protocol. + */ +#define IPPROTO_MAXID (IPPROTO_IDP + 1) /* don't list to IPPROTO_MAX */ + +#define CTL_IPPROTO_NAMES { \ + { "ip", CTLTYPE_NODE }, \ + { "icmp", CTLTYPE_NODE }, \ + { "igmp", CTLTYPE_NODE }, \ + { "ggp", CTLTYPE_NODE }, \ + { 0, 0 }, \ + { 0, 0 }, \ + { "tcp", CTLTYPE_NODE }, \ + { 0, 0 }, \ + { "egp", CTLTYPE_NODE }, \ + { 0, 0 }, \ + { 0, 0 }, \ + { 0, 0 }, \ + { "pup", CTLTYPE_NODE }, \ + { 0, 0 }, \ + { 0, 0 }, \ + { 0, 0 }, \ + { 0, 0 }, \ + { "udp", CTLTYPE_NODE }, \ + { 0, 0 }, \ + { 0, 0 }, \ + { 0, 0 }, \ + { 0, 0 }, \ + { "idp", CTLTYPE_NODE }, \ +} + +/* + * Names for IP sysctl objects + */ +#define IPCTL_FORWARDING 1 /* act as router */ +#define IPCTL_SENDREDIRECTS 2 /* may send redirects when forwarding */ +#define IPCTL_DEFTTL 3 /* default TTL */ +#ifdef notyet +#define IPCTL_DEFMTU 4 /* default MTU */ +#endif +#define IPCTL_RTEXPIRE 5 /* cloned route expiration time */ +#define IPCTL_RTMINEXPIRE 6 /* min value for expiration time */ +#define IPCTL_RTMAXCACHE 7 /* trigger level for dynamic expire */ +#define IPCTL_SOURCEROUTE 8 /* may perform source routes */ +#define IPCTL_DIRECTEDBROADCAST 9 /* may re-broadcast received packets */ +#define IPCTL_INTRQMAXLEN 10 /* max length of netisr queue */ +#define IPCTL_INTRQDROPS 11 /* number of netisr q drops */ +#define IPCTL_ACCEPTSOURCEROUTE 13 /* may accept source routed packets */ +#define IPCTL_MAXID 13 + +#define IPCTL_NAMES { \ + { 0, 0 }, \ + { "forwarding", CTLTYPE_INT }, \ + { "redirect", CTLTYPE_INT }, \ + { "ttl", CTLTYPE_INT }, \ + { "mtu", CTLTYPE_INT }, \ + { "rtexpire", CTLTYPE_INT }, \ + { "rtminexpire", CTLTYPE_INT }, \ + { "rtmaxcache", CTLTYPE_INT }, \ + { "sourceroute", CTLTYPE_INT }, \ + { "directed-broadcast", CTLTYPE_INT }, \ + { "intr-queue-maxlen", CTLTYPE_INT }, \ + { "intr-queue-drops", CTLTYPE_INT }, \ + { "accept_sourceroute", CTLTYPE_INT }, \ +} + + +#ifdef KERNEL +struct ifnet; struct mbuf; /* forward declarations for Standard C */ + +int in_broadcast __P((struct in_addr, struct ifnet *)); +int in_canforward __P((struct in_addr)); +int in_cksum __P((struct mbuf *, int)); +int in_localaddr __P((struct in_addr)); +char *inet_ntoa __P((struct in_addr)); /* in libkern */ + +/* Firewall hooks */ +struct ip; +typedef int ip_fw_chk_t __P((struct ip**, int, struct ifnet*, int, struct mbuf**)); +typedef int ip_fw_ctl_t __P((int, struct mbuf**)); +extern ip_fw_chk_t *ip_fw_chk_ptr; +extern ip_fw_ctl_t *ip_fw_ctl_ptr; + +/* IP NAT hooks */ +typedef int ip_nat_t __P((struct ip**, struct mbuf**, struct ifnet*, int)); +typedef int ip_nat_ctl_t __P((int, struct mbuf**)); +extern ip_nat_t *ip_nat_ptr; +extern ip_nat_ctl_t *ip_nat_ctl_ptr; +#define IP_NAT_IN 0x00000001 +#define IP_NAT_OUT 0x00000002 + +#endif /* KERNEL */ + +#endif |