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updated UDP interface

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This commit is contained in:
Nikhil Chandru Rao
2006-06-25 05:13:17 +00:00
parent fdc05e2664
commit 74339b3c6e
2 changed files with 282 additions and 7 deletions
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64
src/include/gpxe/udp.h
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@@ -11,6 +11,29 @@
#include <stddef.h>
#include <gpxe/in.h>
#include <gpxe/pkbuff.h>
#include <gpxe/if_ether.h>
/**
* UDP constants
*/
#define UDP_HLEN 8
#define UDP_MAX_HLEN 72
#define UDP_MAX_TXPKB ETH_MAX_MTU
#define UDP_MIN_TXPKB ETH_ZLEN
typedef uint16_t port_t;
/**
* A UDP header
*/
struct udp_header {
port_t source_port;
port_t dest_port;
uint16_t len;
uint16_t chksum;
};
struct udp_connection;
@@ -35,15 +58,42 @@ struct udp_operations {
*
*/
struct udp_connection {
/** Address of the remote end of the connection */
struct sockaddr_in sin;
/** Operations table for this connection */
struct udp_operations *udp_op;
/** Address of the remote end of the connection */
struct sockaddr sin;
/** Local port on which the connection receives packets */
port_t local_port;
/** Transmit buffer */
struct pk_buff *tx_pkb;
/** List of registered connections */
struct list_head list;
/** Operations table for this connection */
struct udp_operations *udp_op;
};
extern void udp_connect ( struct udp_connection *conn );
extern void udp_send ( struct udp_connection *conn, const void *data,
size_t len );
/**
* List of registered UDP connections
*/
static LIST_HEAD ( udp_conns );
/**
* Functions provided to the application layer
*/
extern void udp_init ( struct udp_connection *conn, struct udp_operations *udp_op );
extern int udp_open ( struct udp_connection *conn, uint16_t local_port );
extern void udp_connect ( struct udp_connection *conn, struct sockaddr *peer );
extern void udp_close ( struct udp_connection *conn );
extern int udp_send ( struct udp_connection *conn, const void *data, size_t len );
extern int udp_sendto ( struct udp_connection *conn, struct sockaddr *peer, const void *data, size_t len );
static inline void * udp_buffer ( struct udp_connection *conn ) {
return conn->tx_pkb->data;
}
static inline int udp_buflen ( struct udp_connection *conn ) {
return pkb_len ( conn->tx_pkb );
}
#endif /* _GPXE_UDP_H */