85e5e25c52
Conventional usage of the various struct sockaddr_xxx types involves liberal use of casting, which tends to trigger strict-aliasing warnings from gcc. Avoid these now and in future by marking all the relevant types with __attribute__((may_alias)).
47 lines
741 B
C
47 lines
741 B
C
#ifndef _GPXE_UDP_H
|
|
#define _GPXE_UDP_H
|
|
|
|
/** @file
|
|
*
|
|
* UDP protocol
|
|
*
|
|
* This file defines the gPXE UDP API.
|
|
*
|
|
*/
|
|
|
|
#include <stddef.h>
|
|
#include <gpxe/iobuf.h>
|
|
#include <gpxe/tcpip.h>
|
|
#include <gpxe/if_ether.h>
|
|
|
|
struct xfer_interface;
|
|
|
|
/**
|
|
* UDP constants
|
|
*/
|
|
|
|
#define UDP_MAX_HLEN 72
|
|
#define UDP_MAX_TXIOB ETH_MAX_MTU
|
|
#define UDP_MIN_TXIOB ETH_ZLEN
|
|
|
|
/**
|
|
* A UDP header
|
|
*/
|
|
struct udp_header {
|
|
/** Source port */
|
|
uint16_t src;
|
|
/** Destination port */
|
|
uint16_t dest;
|
|
/** Length */
|
|
uint16_t len;
|
|
/** Checksum */
|
|
uint16_t chksum;
|
|
};
|
|
|
|
extern int udp_open_promisc ( struct xfer_interface *xfer );
|
|
extern int udp_open ( struct xfer_interface *xfer, struct sockaddr *peer,
|
|
struct sockaddr *local );
|
|
|
|
#endif /* _GPXE_UDP_H */
|
|
|