153 lines
4.2 KiB
C
153 lines
4.2 KiB
C
#ifndef _IPXE_IN_H
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#define _IPXE_IN_H
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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#include <stdint.h>
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#include <byteswap.h>
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#include <ipxe/socket.h>
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/* Protocol numbers */
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#define IP_ICMP 1
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#define IP_TCP 6
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#define IP_UDP 17
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#define IP_ICMP6 58
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/* IP address constants */
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#define INADDR_NONE htonl ( 0xffffffff )
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#define INADDR_BROADCAST htonl ( 0xffffffff )
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#define INADDR_NET_CLASSA htonl ( 0xff000000 )
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#define INADDR_NET_CLASSB htonl ( 0xffff0000 )
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#define INADDR_NET_CLASSC htonl ( 0xffffff00 )
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#define IN_IS_CLASSA( addr ) \
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( ( (addr) & htonl ( 0x80000000 ) ) == htonl ( 0x00000000 ) )
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#define IN_IS_CLASSB( addr ) \
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( ( (addr) & htonl ( 0xc0000000 ) ) == htonl ( 0x80000000 ) )
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#define IN_IS_CLASSC( addr ) \
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( ( (addr) & htonl ( 0xe0000000 ) ) == htonl ( 0xc0000000 ) )
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#define IN_IS_MULTICAST( addr ) \
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( ( (addr) & htonl ( 0xf0000000 ) ) == htonl ( 0xe0000000 ) )
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/**
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* IP address structure
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*/
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struct in_addr {
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uint32_t s_addr;
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};
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typedef struct in_addr in_addr;
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/**
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* IP6 address structure
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*/
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struct in6_addr {
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union {
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uint8_t u6_addr8[16];
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uint16_t u6_addr16[8];
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uint32_t u6_addr32[4];
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} in6_u;
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#define s6_addr in6_u.u6_addr8
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#define s6_addr16 in6_u.u6_addr16
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#define s6_addr32 in6_u.u6_addr32
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};
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#define IN6_IS_ADDR_UNSPECIFIED( addr ) \
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( ( ( ( ( const uint32_t * ) (addr) )[0] ) | \
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( ( ( const uint32_t * ) (addr) )[1] ) | \
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( ( ( const uint32_t * ) (addr) )[2] ) | \
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( ( ( const uint32_t * ) (addr) )[3] ) ) == 0 )
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#define IN6_IS_ADDR_MULTICAST( addr ) \
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( *( ( const uint8_t * ) (addr) ) == 0xff )
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#define IN6_IS_ADDR_LINKLOCAL( addr ) \
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( ( *( ( const uint16_t * ) (addr) ) & htons ( 0xffc0 ) ) == \
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htons ( 0xfe80 ) )
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#define IN6_IS_ADDR_SITELOCAL( addr ) \
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( ( *( ( const uint16_t * ) (addr) ) & htons ( 0xffc0 ) ) == \
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htons ( 0xfec0 ) )
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#define IN6_IS_ADDR_ULA( addr ) \
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( ( *( ( const uint8_t * ) (addr) ) & 0xfe ) == 0xfc )
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/**
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* IPv4 socket address
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*/
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struct sockaddr_in {
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/** Socket address family (part of struct @c sockaddr)
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*
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* Always set to @c AF_INET for IPv4 addresses
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*/
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sa_family_t sin_family;
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/** Flags (part of struct @c sockaddr_tcpip) */
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uint16_t sin_flags;
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/** TCP/IP port (part of struct @c sockaddr_tcpip) */
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uint16_t sin_port;
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/** Scope ID (part of struct @c sockaddr_tcpip)
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*
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* For multicast addresses, this is the network device index.
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*/
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uint16_t sin_scope_id;
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/** IPv4 address */
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struct in_addr sin_addr;
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/** Padding
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*
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* This ensures that a struct @c sockaddr_in is large enough
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* to hold a socket address for any TCP/IP address family.
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*/
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char pad[ sizeof ( struct sockaddr ) -
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( sizeof ( sa_family_t ) /* sin_family */ +
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sizeof ( uint16_t ) /* sin_flags */ +
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sizeof ( uint16_t ) /* sin_port */ +
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sizeof ( uint16_t ) /* sin_scope_id */ +
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sizeof ( struct in_addr ) /* sin_addr */ ) ];
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} __attribute__ (( packed, may_alias ));
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/**
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* IPv6 socket address
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*/
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struct sockaddr_in6 {
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/** Socket address family (part of struct @c sockaddr)
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*
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* Always set to @c AF_INET6 for IPv6 addresses
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*/
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sa_family_t sin6_family;
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/** Flags (part of struct @c sockaddr_tcpip) */
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uint16_t sin6_flags;
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/** TCP/IP port (part of struct @c sockaddr_tcpip) */
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uint16_t sin6_port;
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/** Scope ID (part of struct @c sockaddr_tcpip)
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*
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* For link-local or multicast addresses, this is the network
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* device index.
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*/
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uint16_t sin6_scope_id;
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/** IPv6 address */
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struct in6_addr sin6_addr;
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/** Padding
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*
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* This ensures that a struct @c sockaddr_in6 is large
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* enough to hold a socket address for any TCP/IP address
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* family.
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*/
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char pad[ sizeof ( struct sockaddr ) -
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( sizeof ( sa_family_t ) /* sin6_family */ +
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sizeof ( uint16_t ) /* sin6_flags */ +
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sizeof ( uint16_t ) /* sin6_port */ +
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sizeof ( uint16_t ) /* sin6_scope_id */ +
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sizeof ( struct in6_addr ) /* sin6_addr */ ) ];
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} __attribute__ (( packed, may_alias ));
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extern int inet_aton ( const char *cp, struct in_addr *inp );
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extern char * inet_ntoa ( struct in_addr in );
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extern int inet6_aton ( const char *string, struct in6_addr *in );
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extern char * inet6_ntoa ( const struct in6_addr *in );
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#endif /* _IPXE_IN_H */
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