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added more networking routines

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This commit is contained in:
Markus Fröschle
2013-12-23 14:14:25 +00:00
parent 53f45bc7cc
commit 53dcc23bd6
9 changed files with 1152 additions and 52 deletions
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83
net/udp.c
View File

@@ -9,30 +9,22 @@
*/
#include "bas_types.h"
#include "net.h"
#include <stddef.h>
#ifdef DBUG_NETWORK
/********************************************************************/
typedef struct
{
uint16_t port;
void (*handler)(NIF *, NBUF *);
} UDP_BOUND_PORT;
/********************************************************************/
#define UDP_MAX_PORTS (5) /* plenty for this implementation */
static UDP_BOUND_PORT
udp_port_table[UDP_MAX_PORTS];
static UDP_BOUND_PORT udp_port_table[UDP_MAX_PORTS];
static uint16
udp_port;
static uint16_t udp_port;
/********************************************************************/
void
udp_init (void)
void udp_init(void)
{
int index;
@@ -43,15 +35,13 @@ udp_init (void)
udp_port = DEFAULT_UDP_PORT; /* next free port */
}
/********************************************************************/
void
udp_prime_port (uint16 init_port)
void udp_prime_port(uint16_t init_port)
{
udp_port = init_port;
}
/********************************************************************/
void
udp_bind_port (uint16 port, void (*handler)(NIF *, NBUF *))
void udp_bind_port(uint16_t port, void (*handler)(NIF *, NBUF *))
{
int index;
@@ -65,9 +55,8 @@ udp_bind_port (uint16 port, void (*handler)(NIF *, NBUF *))
}
}
}
/********************************************************************/
void
udp_free_port (uint16 port)
void udp_free_port(uint16_t port)
{
int index;
@@ -80,9 +69,8 @@ udp_free_port (uint16 port)
}
}
}
/********************************************************************/
static void *
udp_port_handler (uint16 port)
static void *udp_port_handler(uint16_t port)
{
int index;
@@ -95,11 +83,10 @@ udp_port_handler (uint16 port)
}
return NULL;
}
/********************************************************************/
uint16
udp_obtain_free_port (void)
uint16_t udp_obtain_free_port(void)
{
uint16 port;
uint16_t port;
port = udp_port;
if (--udp_port <= 255)
@@ -107,50 +94,47 @@ udp_obtain_free_port (void)
return port;
}
/********************************************************************/
int
udp_send ( NIF *nif, uint8 *dest, int sport, int dport, NBUF *pNbuf)
int udp_send(NIF *nif, uint8_t *dest, int sport, int dport, NBUF *pNbuf)
{
/*
* This function takes data and creates a UDP frame and
* passes it onto the IP layer
*/
udp_frame_hdr *udpframe;
udp_frame_hdr *udpframe;
udpframe = (udp_frame_hdr *)&pNbuf->data[UDP_HDR_OFFSET];
udpframe = (udp_frame_hdr *) &pNbuf->data[UDP_HDR_OFFSET];
/* Set UDP source port */
udpframe->src_port = (uint16)sport;
udpframe->src_port = (uint16_t) sport;
/* Set UDP destination port */
udpframe->dest_port = (uint16)dport;
udpframe->dest_port = (uint16_t) dport;
/* Set length */
udpframe->length = (uint16)(pNbuf->length + UDP_HDR_SIZE);
udpframe->length = (uint16_t) (pNbuf->length + UDP_HDR_SIZE);
/* No checksum calcualation needed */
udpframe->chksum = (uint16)0;
udpframe->chksum = (uint16_t) 0;
/* Add the length of the UDP packet to the total length of the packet */
pNbuf->length += 8;
return (ip_send(nif,
dest,
ip_get_myip(nif_get_protocol_info(nif,ETH_FRM_IP)),
return (ip_send(nif, dest,
ip_get_myip(nif_get_protocol_info(nif, ETH_FRM_IP)),
IP_PROTO_UDP,
pNbuf));
}
/********************************************************************/
void
udp_handler (NIF *nif, NBUF *pNbuf)
void udp_handler(NIF *nif, NBUF *pNbuf)
{
/*
* This function handles incoming UDP packets
*/
udp_frame_hdr *udpframe;
udp_frame_hdr *udpframe;
void (*handler)(NIF *, NBUF *);
udpframe = (udp_frame_hdr *)&pNbuf->data[pNbuf->offset];
udpframe = (udp_frame_hdr *) &pNbuf->data[pNbuf->offset];
/*
* Adjust the length and valid data offset of the packet we are
@@ -163,18 +147,13 @@ udp_handler (NIF *nif, NBUF *pNbuf)
* Traverse the list of bound ports to see if there is a higher
* level protocol to pass the packet on to
*/
if ((handler = (void(*)(NIF*,NBUF*))udp_port_handler(UDP_DEST(udpframe))) != NULL)
if ((handler = (void(*)(NIF*, NBUF*)) udp_port_handler(UDP_DEST(udpframe))) != NULL)
handler(nif, pNbuf);
else
{
#ifdef DBUG_PRINT
printf("Received UDP packet for non-supported port\n");
#endif
xprintf("Received UDP packet for non-supported port\n");
nbuf_free(pNbuf);
}
return;
}
/********************************************************************/
#endif /* #ifdef DBUG_NETWORK */