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updated the linux data link layers for changed apdu that passes npdu.

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This commit is contained in:
skarg
2006-08-13 11:19:42 +00:00
parent a30d497669
commit 3560e3d06f
11 changed files with 66 additions and 96 deletions
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bacnet-stack/ports/linux/arcnet.c
+19 -28
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@@ -34,6 +34,7 @@
#include <stdint.h>
#include "bacdef.h"
#include "npdu.h"
#include "arcnet.h"
#include "net.h"
@@ -182,18 +183,23 @@ bool arcnet_init(char *interface_name)
return arcnet_valid();
}
/* function to send a packet out the socket */
/* function to send a PDU out the socket */
/* returns number of bytes sent on success, negative on failure */
int arcnet_send(BACNET_ADDRESS * dest, /* destination address */
BACNET_ADDRESS * src, /* source address */
int arcnet_send_pdu(BACNET_ADDRESS * dest, /* destination address */
BACNET_NPDU_DATA * npdu_data, /* network information */
uint8_t * pdu, /* any data to be sent - may be null */
unsigned pdu_len)
{ /* number of bytes of data */
BACNET_ADDRESS src = { 0 }; /* source address */
int bytes = 0;
uint8_t mtu[512] = { 0 };
int mtu_len = 0;
int npdu_len = 0;
struct archdr *pkt = (struct archdr *) mtu;
src.mac[0] = ARCNET_MAC_Address;
src.mac_len = 1;
/* don't waste time if the socket is not valid */
if (ARCNET_Sock_FD < 0) {
fprintf(stderr, "arcnet: socket is invalid!\n");
@@ -206,24 +212,25 @@ int arcnet_send(BACNET_ADDRESS * dest, /* destination address */
fprintf(stderr, "arcnet: invalid destination MAC address!\n");
return -2;
}
if (src->mac_len == 1)
pkt->hard.source = src->mac[0];
if (src.mac_len == 1)
pkt->hard.source = src.mac[0];
else {
fprintf(stderr, "arcnet: invalid source MAC address!\n");
return -3;
}
if ((ARC_HDR_SIZE + pdu_len) > 512) {
fprintf(stderr, "arcnet: PDU is too big to send!\n");
return -4;
}
/* Logical PDU portion */
pkt->soft.raw[0] = 0xCD; /* SC for BACnet */
pkt->soft.raw[1] = 0x82; /* DSAP for BACnet */
pkt->soft.raw[2] = 0x82; /* SSAP for BACnet */
pkt->soft.raw[3] = 0x03; /* Control byte in header */
memcpy(&pkt->soft.raw[4], pdu, pdu_len);
pkt->soft.raw[3] = 0x03; /* LLC Control byte in header */
npdu_len = npdu_encode_pdu(&pkt->soft.raw[4], dest, &src, npdu_data);
/* packet length */
mtu_len = ARC_HDR_SIZE + 4 /*SC,DSAP,SSAP,LLC */ + pdu_len;
mtu_len = ARC_HDR_SIZE + 4 /*SC,DSAP,SSAP,LLC */ + npdu_len + pdu_len;
if (mtu_len > 512) {
fprintf(stderr, "arcnet: PDU is too big to send!\n");
return -4;
}
memcpy(&pkt->soft.raw[4+npdu_len], pdu, pdu_len);
/* Send the packet */
bytes =
sendto(ARCNET_Sock_FD, &mtu, mtu_len, 0,
@@ -237,22 +244,6 @@ int arcnet_send(BACNET_ADDRESS * dest, /* destination address */
return bytes;
}
/* function to send a PDU out the socket */
/* returns number of bytes sent on success, negative on failure */
int arcnet_send_pdu(BACNET_ADDRESS * dest, /* destination address */
uint8_t * pdu, /* any data to be sent - may be null */
unsigned pdu_len)
{ /* number of bytes of data */
BACNET_ADDRESS src = { 0 }; /* source address */
src.mac[0] = ARCNET_MAC_Address;
src.mac_len = 1;
return arcnet_send(dest, /* destination address */
&src, /* source address */
pdu, /* any data to be sent - may be null */
pdu_len); /* number of bytes of data */
}
/* receives an framed packet */
/* returns the number of octets in the PDU, or zero on failure */
uint16_t arcnet_receive(BACNET_ADDRESS * src, /* source address */