src/include/gpxe/in.h

   1 #ifndef _GPXE_IN_H
   2 #define _GPXE_IN_H
   3
   4 FILE_LICENCE ( GPL2_OR_LATER );
   5
   6 #include <stdint.h>
   7 #include <gpxe/socket.h>
   8
   9 /* Protocol numbers */
  10
  11 #define IP_ICMP         1
  12 #define IP_TCP          6
  13 #define IP_UDP          17
  14 #define IP_ICMP6        58
  15
  16 /* IP address constants */
  17
  18 #define INADDR_NONE 0xffffffff
  19
  20 #define INADDR_BROADCAST 0xffffffff
  21
  22 #define IN_CLASSA(addr)         ( ( (addr) & 0x80000000 ) == 0x00000000 )
  23 #define IN_CLASSA_NET           0xff000000
  24 #define IN_CLASSB(addr)         ( ( (addr) & 0xc0000000 ) == 0x80000000 )
  25 #define IN_CLASSB_NET           0xffff0000
  26 #define IN_CLASSC(addr)         ( ( (addr) & 0xe0000000 ) == 0xc0000000 )
  27 #define IN_CLASSC_NET           0xffffff00
  28 #define IN_MULTICAST(addr)      ( ( (addr) & 0xf0000000 ) == 0xe0000000 )
  29
  30 /**
  31  * IP address structure
  32  */
  33 struct in_addr {
  34         uint32_t        s_addr;
  35 };
  36
  37 typedef struct in_addr in_addr;
  38
  39 /**
  40  * IP6 address structure
  41  */
  42 struct in6_addr {
  43         union {
  44                 uint8_t u6_addr8[16];
  45                 uint16_t u6_addr16[8];
  46                 uint32_t u6_addr32[4];
  47         } in6_u;
  48 #define s6_addr         in6_u.u6_addr8
  49 #define s6_addr16       in6_u.u6_addr16
  50 #define s6_addr32       in6_u.u6_addr32
  51 };
  52
  53 /**
  54  * IPv4 socket address
  55  */
  56 struct sockaddr_in {
  57         /** Socket address family (part of struct @c sockaddr)
  58          *
  59          * Always set to @c AF_INET for IPv4 addresses
  60          */
  61         sa_family_t sin_family;
  62         /** TCP/IP port (part of struct @c sockaddr_tcpip) */
  63         uint16_t sin_port;
  64         /** IPv4 address */
  65         struct in_addr sin_addr;
  66         /** Padding
  67          *
  68          * This ensures that a struct @c sockaddr_tcpip is large
  69          * enough to hold a socket address for any TCP/IP address
  70          * family.
  71          */
  72         char pad[ sizeof ( struct sockaddr ) - sizeof ( sa_family_t )
  73                                              - sizeof ( uint16_t )
  74                                              - sizeof ( struct in_addr ) ];
  75 } __attribute__ (( may_alias ));
  76
  77 /**
  78  * IPv6 socket address
  79  */
  80 struct sockaddr_in6 {
  81         /** Socket address family (part of struct @c sockaddr)
  82          *
  83          * Always set to @c AF_INET6 for IPv6 addresses
  84          */
  85         sa_family_t sin_family;
  86         /** TCP/IP port (part of struct @c sockaddr_tcpip) */
  87         uint16_t        sin_port;
  88         uint32_t        sin6_flowinfo;  /* Flow number */
  89         struct in6_addr sin6_addr;      /* 128-bit destination address */
  90         uint32_t        sin6_scope_id;  /* Scope ID */
  91 } __attribute__ (( may_alias ));
  92
  93 extern int inet_aton ( const char *cp, struct in_addr *inp );
  94 extern char * inet_ntoa ( struct in_addr in );
  95
  96 /* Adding the following for IP6 support
  97  *
  98
  99 extern int inet6_aton ( const char *cp, struct in6_addr *inp );
 100 extern char * inet6_ntoa ( struct in_addr in );
 101
 102  */
 103
 104 #endif  /* _GPXE_IN_H */