1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
/* $OpenBSD: keepalive.c,v 1.7 2010/11/04 09:52:16 claudio Exp $ */
/*
* Copyright (c) 2009 Michele Marchetto <michele@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/uio.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <arpa/inet.h>
#include <net/if_dl.h>
#include <unistd.h>
#include <errno.h>
#include <event.h>
#include <stdlib.h>
#include <string.h>
#include "ldpd.h"
#include "ldp.h"
#include "log.h"
#include "ldpe.h"
void
send_keepalive(struct nbr *nbr)
{
struct ibuf *buf;
u_int16_t size;
if (nbr->iface->passive)
return;
if ((buf = ibuf_open(LDP_MAX_LEN)) == NULL)
fatal("send_keepalive");
size = LDP_HDR_SIZE + sizeof(struct ldp_msg);
gen_ldp_hdr(buf, nbr->iface, size);
size -= LDP_HDR_SIZE;
gen_msg_tlv(buf, MSG_TYPE_KEEPALIVE, size);
evbuf_enqueue(&nbr->wbuf, buf);
}
int
recv_keepalive(struct nbr *nbr, char *buf, u_int16_t len)
{
struct ldp_msg ka;
bcopy(buf, &ka, sizeof(ka));
if (len != LDP_MSG_LEN) {
session_shutdown(nbr, S_BAD_MSG_LEN, ka.msgid, ka.type);
return (-1);
}
if (nbr->state != NBR_STA_OPER)
nbr_fsm(nbr, NBR_EVT_KEEPALIVE_RCVD);
else
nbr_fsm(nbr, NBR_EVT_PDU_RCVD);
return (ntohs(ka.length));
}
|
