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#include <stdint.h>
#if (HAVE_CONFIG_H)
#include "../include/config.h"
#endif
#include "./libnet_test.h"
#include <assert.h>
#define DEVICE_NAME "lo"
int
main(int argc, char *argv[])
{
(void)argc; /* unused */
int c;
libnet_t *l;
libnet_ptag_t t;
char errbuf[LIBNET_ERRBUF_SIZE];
size_t udld_payload_size = 0;
l = libnet_init(LIBNET_LINK, DEVICE_NAME, errbuf);
if (l == NULL)
{
fprintf(stderr, "libnet_init() failed: %s", errbuf);
return (EXIT_FAILURE);
}
/* [TLV SEQUENCE NUMBER ]*/
const uint32_t sequence_number = 1;
t = libnet_build_udld_sequence_number((const uint8_t *)&sequence_number, l, 0);
if (t == (-1))
{
fprintf(stderr, "Cannot build UDLD Sequence Number TLV: %s\n", libnet_geterror(l));
goto bad;
}
udld_payload_size += (LIBNET_UDLD_TLV_HDR_SIZE + sizeof(uint32_t));
/* [TLV DEVICE NAME ]*/
const char *device_name_str = "S1";
t = libnet_build_udld_device_name((const uint8_t *)device_name_str, strlen(device_name_str), l, 0);
if (t == (-1))
{
fprintf(stderr, "Cannot build UDLD Device Name TLV: %s\n", libnet_geterror(l));
goto bad;
}
udld_payload_size += (LIBNET_UDLD_TLV_HDR_SIZE + strlen(device_name_str));
/* [TLV TIMEOUT INTERVAL ]*/
const uint8_t timeout_interval = 5;
t = libnet_build_udld_timeout_interval(&timeout_interval, l, 0);
if (t == (-1))
{
fprintf(stderr, "Cannot build UDLD Timeout Interval TLV: %s\n", libnet_geterror(l));
goto bad;
}
udld_payload_size += (LIBNET_UDLD_TLV_HDR_SIZE + sizeof(uint8_t));
/* [TLV MESSAGE INTERVAL ]*/
const uint8_t message_interval = 7;
t = libnet_build_udld_message_interval(&message_interval, l, 0);
if (t == (-1))
{
fprintf(stderr, "Cannot build UDLD Message Interval TLV: %s\n", libnet_geterror(l));
goto bad;
}
udld_payload_size += (LIBNET_UDLD_TLV_HDR_SIZE + sizeof(uint8_t));
/* [ TLV ECHO ] */
const uint8_t echo_id_pairs[] = {0x0, 0x0, 0x0, 0x0};
t = libnet_build_udld_echo(echo_id_pairs, (sizeof(echo_id_pairs)/sizeof(echo_id_pairs[0])), l, 0);
if (t == (-1))
{
fprintf(stderr, "Cannot build UDLD Echo TLV: %s\n", libnet_geterror(l));
goto bad;
}
udld_payload_size += (LIBNET_UDLD_TLV_HDR_SIZE + (sizeof(echo_id_pairs)/sizeof(echo_id_pairs[0])));
/* [ TLV PORT ID ] */
const char *port_id_str = "Gi0/1";
t = libnet_build_udld_port_id((const uint8_t *)port_id_str, strlen(port_id_str), l, 0);
if (t == (-1))
{
fprintf(stderr, "Cannot build UDLD Port ID TLV: %s\n", libnet_geterror(l));
goto bad;
}
udld_payload_size += (LIBNET_UDLD_TLV_HDR_SIZE + strlen(port_id_str));
/* [ TLV DEVICE ID ] */
const char *device_id_str = "FOC1031Z7JG";
t = libnet_build_udld_device_id((const uint8_t *)device_id_str, strlen(device_id_str), l, 0);
if (t == (-1))
{
fprintf(stderr, "Cannot build UDLD Device ID TLV: %s\n", libnet_geterror(l));
goto bad;
}
udld_payload_size += (LIBNET_UDLD_TLV_HDR_SIZE + strlen(device_id_str));
assert((udld_payload_size == 56) && "Incorrect UDLD payload size\n");
int flags = (LIBNET_UDLD_FLAG_RT | LIBNET_UDLD_FLAG_RSY);
t = libnet_build_udld_hdr(LIBNET_UDLD_PDU_VERSION, /* version */
LIBNET_UDLD_PDU_OPCODE_PROBE, /* opcode */
flags, /* flags */
0, /* checksum */
NULL, /* payload */
0, /* payload_s */
l, 0);
if (t == -1)
{
fprintf(stderr, "Can't build UDLD: %s\n", libnet_geterror(l));
goto bad;
}
uint8_t OUI[3] = LIBNET_UDLD_OID;
t = libnet_build_802_2snap(0xAA, /* DSAP */
0xAA, /* SSAP */
0x03, /* Control */
OUI, /* OUI */
LIBNET_UDLD_HDLC_PROTO_TYPE, /* Type */
NULL, /* Payload */
0, /* Payload_s */
l,
0);
uint8_t udld_dst_mac[6] = LIBNET_UDLD_DEST_MAC;
uint8_t udld_src_mac_dummy[6] = { 0x00, 0x19, 0x06, 0xEA, 0xB8, 0x81 };
t = libnet_build_802_3(udld_dst_mac, /* ethernet destination */
udld_src_mac_dummy, /* ethernet source */
LIBNET_802_2SNAP_H + /* */
LIBNET_UDLD_H + udld_payload_size, /* */
NULL, /* payload */
0, /* payload size */
l, /* libnet context */
0); /* libnet ptag */
if (t == -1)
{
fprintf(stderr, "Can't build 802.3 header: %s\n", libnet_geterror(l));
goto bad;
}
/* write the packet out */
c = libnet_write(l);
if (c == -1)
{
fprintf(stderr, "Write error: %s\n", libnet_geterror(l));
goto bad;
}
else
{
fprintf(stderr, "Wrote %d byte LLDP frame \"%s\"\n", c, argv[2]);
}
libnet_destroy(l);
return (EXIT_SUCCESS);
bad:
libnet_destroy(l);
return (EXIT_FAILURE);
}
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