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#ifndef _GPXE_SOCKET_H
#define _GPXE_SOCKET_H
/** @file
*
* Socket addresses
*
*/
FILE_LICENCE ( GPL2_OR_LATER );
#include <stdint.h>
/**
* @defgroup commtypes Communication semantics
*
* @{
*/
/** Connection-based, reliable streams */
extern int tcp_sock_stream;
#define TCP_SOCK_STREAM 0x1
#define SOCK_STREAM tcp_sock_stream
/** Connectionless, unreliable streams */
extern int udp_sock_dgram;
#define UDP_SOCK_DGRAM 0x2
#define SOCK_DGRAM udp_sock_dgram
/** @} */
/**
* Name communication semantics
*
* @v semantics Communication semantics (e.g. SOCK_STREAM)
* @ret name Name of communication semantics
*/
static inline __attribute__ (( always_inline )) const char *
socket_semantics_name ( int semantics ) {
/* Cannot use a switch() because of the {TCP_UDP}_SOCK_XXX hack */
if ( semantics == SOCK_STREAM ) {
return "SOCK_STREAM";
} else if ( semantics == SOCK_DGRAM ) {
return "SOCK_DGRAM";
} else {
return "SOCK_UNKNOWN";
}
}
/**
* @defgroup addrfam Address families
*
* @{
*/
#define AF_INET 1 /**< IPv4 Internet addresses */
#define AF_INET6 2 /**< IPv6 Internet addresses */
/** @} */
/**
* Name address family
*
* @v family Address family (e.g. AF_INET)
* @ret name Name of address family
*/
static inline __attribute__ (( always_inline )) const char *
socket_family_name ( int family ) {
switch ( family ) {
case AF_INET: return "AF_INET";
case AF_INET6: return "AF_INET6";
default: return "AF_UNKNOWN";
}
}
/** A socket address family */
typedef uint16_t sa_family_t;
/** Length of a @c struct @c sockaddr */
#define SA_LEN 32
/**
* Generalized socket address structure
*
* This contains the fields common to socket addresses for all address
* families.
*/
struct sockaddr {
/** Socket address family
*
* This is an AF_XXX constant.
*/
sa_family_t sa_family;
/** Padding
*
* This ensures that a struct @c sockaddr_tcpip is large
* enough to hold a socket address for any TCP/IP address
* family.
*/
char pad[ SA_LEN - sizeof ( sa_family_t ) ];
} __attribute__ (( may_alias ));
#endif /* _GPXE_SOCKET_H */
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