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/* $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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} |