1 /* in.h */ 2 3 #ifndef _NETINET_IN_H_ 4 #define _NETINET_IN_H_ 5 6 #include <sys/types.h> 7 #include <net/if.h> 8 #include <endian.h> 9 10 #ifdef __cplusplus 11 extern "C" { 12 #endif 13 14 typedef unsigned short in_port_t; 15 typedef unsigned long in_addr_t; 16 17 /* We can't include <ByteOrder.h> since we are a posix file, 18 * and we are not allowed to import all the BeOS types here. 19 */ 20 #ifndef htonl 21 extern unsigned long __swap_int32(unsigned long); /* private */ 22 extern unsigned short __swap_int16(unsigned short); /* private */ 23 #if BYTE_ORDER == LITTLE_ENDIAN 24 #define htonl(x) __swap_int32(x) 25 #define ntohl(x) __swap_int32(x) 26 #define htons(x) __swap_int16(x) 27 #define ntohs(x) __swap_int16(x) 28 #elif BYTE_ORDER == BIG_ENDIAN 29 #define htonl(x) (x) 30 #define ntohl(x) (x) 31 #define htons(x) (x) 32 #define ntohs(x) (x) 33 #else 34 #error Unknown byte order. 35 #endif 36 #endif 37 38 39 /* Protocol definitions - add to as required... */ 40 enum { 41 IPPROTO_IP = 0, /* 0, IPv4 */ 42 IPPROTO_ICMP = 1, /* 1, ICMP (v4) */ 43 IPPROTO_IGMP = 2, /* 2, IGMP (group management) */ 44 IPPROTO_TCP = 6, /* 6, tcp */ 45 IPPROTO_UDP = 17, /* 17, UDP */ 46 IPPROTO_IPV6 = 41, /* 41, IPv6 in IPv6 */ 47 IPPROTO_ROUTING = 43, /* 43, Routing */ 48 IPPROTO_ICMPV6 = 58, /* 58, IPv6 ICMP */ 49 IPPROTO_ETHERIP = 97, /* 97, Ethernet in IPv4 */ 50 IPPROTO_RAW = 255 /* 255 */ 51 }; 52 53 #define IPPROTO_MAX 256 54 55 /* Port numbers... 56 * < IPPORT_RESERVED are privileged and should be 57 * accessible only by root 58 * > IPPORT_USERRESERVED are reserved for servers, though 59 * not requiring privileged status 60 */ 61 62 #define IPPORT_RESERVED 1024 63 #define IPPORT_USERRESERVED 49151 64 65 /* This is an IPv4 address structure. Why is it a structure? 66 * Historical reasons. 67 */ 68 struct in_addr { 69 in_addr_t s_addr; 70 }; 71 72 /* 73 * IP Version 4 socket address. 74 */ 75 struct sockaddr_in { 76 uint8 sin_len; 77 uint8 sin_family; 78 uint16 sin_port; 79 struct in_addr sin_addr; 80 int8 sin_zero[8]; 81 }; 82 /* the address is therefore at sin_addr.s_addr */ 83 84 /* 85 * Options for use with [gs]etsockopt at the IP level. 86 * First word of comment is data type; bool is stored in int. 87 */ 88 #define IP_OPTIONS 1 /* buf/ip_opts; set/get IP options */ 89 #define IP_HDRINCL 2 /* int; header is included with data */ 90 #define IP_TOS 3 /* int; IP type of service and preced. */ 91 #define IP_TTL 4 /* int; IP time to live */ 92 #define IP_RECVOPTS 5 /* bool; receive all IP opts w/dgram */ 93 #define IP_RECVRETOPTS 6 /* bool; receive IP opts for response */ 94 #define IP_RECVDSTADDR 7 /* bool; receive IP dst addr w/dgram */ 95 #define IP_RETOPTS 8 /* ip_opts; set/get IP options */ 96 #define IP_MULTICAST_IF 9 /* in_addr; set/get IP multicast i/f */ 97 #define IP_MULTICAST_TTL 10 /* u_char; set/get IP multicast ttl */ 98 #define IP_MULTICAST_LOOP 11 /* u_char; set/get IP multicast loopback */ 99 #define IP_ADD_MEMBERSHIP 12 /* ip_mreq; add an IP group membership */ 100 #define IP_DROP_MEMBERSHIP 13 /* ip_mreq; drop an IP group membership */ 101 102 #define __IPADDR(x) ((uint32) htonl((uint32)(x))) 103 104 #define INADDR_ANY __IPADDR(0x00000000) 105 #define INADDR_LOOPBACK __IPADDR(0x7f000001) 106 #define INADDR_BROADCAST __IPADDR(0xffffffff) /* must be masked */ 107 108 #define INADDR_UNSPEC_GROUP __IPADDR(0xe0000000) /* 224.0.0.0 */ 109 #define INADDR_ALLHOSTS_GROUP __IPADDR(0xe0000001) /* 224.0.0.1 */ 110 #define INADDR_ALLROUTERS_GROUP __IPADDR(0xe0000002) /* 224.0.0.2 */ 111 #define INADDR_MAX_LOCAL_GROUP __IPADDR(0xe00000ff) /* 224.0.0.255 */ 112 113 #define IN_LOOPBACKNET 127 /* official! */ 114 115 #define INADDR_NONE __IPADDR(0xffffffff) 116 117 #define IN_CLASSA(i) (((uint32)(i) & __IPADDR(0x80000000)) == \ 118 __IPADDR(0x00000000)) 119 #define IN_CLASSA_NET __IPADDR(0xff000000) 120 #define IN_CLASSA_NSHIFT 24 121 #define IN_CLASSA_HOST __IPADDR(0x00ffffff) 122 #define IN_CLASSA_MAX 128 123 124 #define IN_CLASSB(i) (((uint32)(i) & __IPADDR(0xc0000000)) == \ 125 __IPADDR(0x80000000)) 126 #define IN_CLASSB_NET __IPADDR(0xffff0000) 127 #define IN_CLASSB_NSHIFT 16 128 #define IN_CLASSB_HOST __IPADDR(0x0000ffff) 129 #define IN_CLASSB_MAX 65536 130 131 #define IN_CLASSC(i) (((uint32)(i) & __IPADDR(0xe0000000)) == \ 132 __IPADDR(0xc0000000)) 133 #define IN_CLASSC_NET __IPADDR(0xffffff00) 134 #define IN_CLASSC_NSHIFT 8 135 #define IN_CLASSC_HOST __IPADDR(0x000000ff) 136 137 #define IN_CLASSD(i) (((uint32)(i) & __IPADDR(0xf0000000)) == \ 138 __IPADDR(0xe0000000)) 139 /* These ones aren't really net and host fields, but routing needn't know. */ 140 #define IN_CLASSD_NET __IPADDR(0xf0000000) 141 #define IN_CLASSD_NSHIFT 28 142 #define IN_CLASSD_HOST __IPADDR(0x0fffffff) 143 144 #define IN_MULTICAST(i) IN_CLASSD(i) 145 146 #define IN_EXPERIMENTAL(i) (((uint32)(i) & 0xf0000000) == 0xf0000000) 147 #define IN_BADCLASS(i) (((uint32)(i) & 0xf0000000) == 0xf0000000) 148 149 #define IP_MAX_MEMBERSHIPS 20 150 151 /* some helpful macro's :) */ 152 #define in_hosteq(s,t) ((s).s_addr == (t).s_addr) 153 #define in_nullhost(x) ((x).s_addr == INADDR_ANY) 154 #define satosin(sa) ((struct sockaddr_in *)(sa)) 155 #define sintosa(sin) ((struct sockaddr *)(sin)) 156 157 struct ifnet; // forward declaration 158 159 /* Prototypes... */ 160 int in_broadcast (struct in_addr, struct ifnet *); 161 int in_canforward (struct in_addr); 162 int in_localaddr (struct in_addr); 163 void in_socktrim (struct sockaddr_in*); 164 /* uint16 in_cksum (struct mbuf *, int); */ 165 uint16 in_cksum(struct mbuf *m, int len, int off); 166 167 #ifdef __cplusplus 168 } 169 #endif /* __cplusplus */ 170 171 #endif /* NETINET_IN_H */ 172