59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
/* $OpenBSD: keepalive.c,v 1.17 2016/07/01 23:36:38 renato Exp $ */
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/*
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* Copyright (c) 2009 Michele Marchetto <michele@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <string.h>
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#include "ldpd.h"
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#include "ldpe.h"
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#include "log.h"
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void
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send_keepalive(struct nbr *nbr)
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{
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struct ibuf *buf;
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uint16_t size;
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size = LDP_HDR_SIZE + LDP_MSG_SIZE;
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if ((buf = ibuf_open(size)) == NULL)
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fatal(__func__);
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gen_ldp_hdr(buf, size);
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size -= LDP_HDR_SIZE;
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gen_msg_hdr(buf, MSG_TYPE_KEEPALIVE, size);
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evbuf_enqueue(&nbr->tcp->wbuf, buf);
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}
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int
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recv_keepalive(struct nbr *nbr, char *buf, uint16_t len)
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{
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struct ldp_msg msg;
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memcpy(&msg, buf, sizeof(msg));
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if (len != LDP_MSG_SIZE) {
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session_shutdown(nbr, S_BAD_MSG_LEN, msg.id, msg.type);
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return (-1);
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}
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if (nbr->state != NBR_STA_OPER)
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nbr_fsm(nbr, NBR_EVT_KEEPALIVE_RCVD);
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return (0);
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}
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