b100636770
"Copyright (c) 2001-2007, by Cisco Systems,"
instead of
*Copyright (c) 2001-2007, Cisco Systems,"
- Also fix a few straglers that were still in 2006.
580 lines
15 KiB
C
580 lines
15 KiB
C
/*-
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* Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* a) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* b) Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the distribution.
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*
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* c) Neither the name of Cisco Systems, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* $KAME: sctp_header.h,v 1.14 2005/03/06 16:04:17 itojun Exp $ */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#ifndef __sctp_header_h__
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#define __sctp_header_h__
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#include <sys/time.h>
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#include <netinet/sctp.h>
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#include <netinet/sctp_constants.h>
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/*
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* Parameter structures
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*/
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struct sctp_ipv4addr_param {
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struct sctp_paramhdr ph;/* type=SCTP_IPV4_PARAM_TYPE, len=8 */
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uint32_t addr; /* IPV4 address */
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};
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#define SCTP_V6_ADDR_BYTES 16
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struct sctp_ipv6addr_param {
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struct sctp_paramhdr ph;/* type=SCTP_IPV6_PARAM_TYPE, len=20 */
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uint8_t addr[SCTP_V6_ADDR_BYTES]; /* IPV6 address */
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};
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/* Cookie Preservative */
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struct sctp_cookie_perserve_param {
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struct sctp_paramhdr ph;/* type=SCTP_COOKIE_PRESERVE, len=8 */
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uint32_t time; /* time in ms to extend cookie */
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};
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#define SCTP_ARRAY_MIN_LEN 1
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/* Host Name Address */
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struct sctp_host_name_param {
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struct sctp_paramhdr ph;/* type=SCTP_HOSTNAME_ADDRESS */
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char name[SCTP_ARRAY_MIN_LEN]; /* host name */
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};
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/*
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* This is the maximum padded size of a s-a-p
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* so paramheadr + 3 address types (6 bytes) + 2 byte pad = 12
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*/
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#define SCTP_MAX_ADDR_PARAMS_SIZE 12
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/* supported address type */
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struct sctp_supported_addr_param {
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struct sctp_paramhdr ph;/* type=SCTP_SUPPORTED_ADDRTYPE */
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uint16_t addr_type[SCTP_ARRAY_MIN_LEN]; /* array of supported address
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* types */
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};
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/* ECN parameter */
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struct sctp_ecn_supported_param {
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struct sctp_paramhdr ph;/* type=SCTP_ECN_CAPABLE */
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};
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/* heartbeat info parameter */
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struct sctp_heartbeat_info_param {
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struct sctp_paramhdr ph;
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uint32_t time_value_1;
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uint32_t time_value_2;
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uint32_t random_value1;
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uint32_t random_value2;
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uint16_t user_req;
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uint8_t addr_family;
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uint8_t addr_len;
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char address[SCTP_ADDRMAX];
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};
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/* draft-ietf-tsvwg-prsctp */
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/* PR-SCTP supported parameter */
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struct sctp_prsctp_supported_param {
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struct sctp_paramhdr ph;
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};
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/* draft-ietf-tsvwg-addip-sctp */
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struct sctp_asconf_paramhdr { /* an ASCONF "parameter" */
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struct sctp_paramhdr ph;/* a SCTP parameter header */
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uint32_t correlation_id;/* correlation id for this param */
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};
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struct sctp_asconf_addr_param { /* an ASCONF address parameter */
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struct sctp_asconf_paramhdr aph; /* asconf "parameter" */
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struct sctp_ipv6addr_param addrp; /* max storage size */
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};
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struct sctp_asconf_addrv4_param { /* an ASCONF address (v4) parameter */
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struct sctp_asconf_paramhdr aph; /* asconf "parameter" */
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struct sctp_ipv4addr_param addrp; /* max storage size */
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};
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#define SCTP_MAX_SUPPORTED_EXT 256
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struct sctp_supported_chunk_types_param {
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struct sctp_paramhdr ph;/* type = 0x8008 len = x */
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uint8_t chunk_types[0];
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};
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/* ECN Nonce: draft-ladha-sctp-ecn-nonce */
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struct sctp_ecn_nonce_supported_param {
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struct sctp_paramhdr ph;/* type = 0x8001 len = 4 */
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};
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/*
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* Structures for DATA chunks
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*/
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struct sctp_data {
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uint32_t tsn;
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uint16_t stream_id;
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uint16_t stream_sequence;
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uint32_t protocol_id;
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/* user data follows */
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};
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struct sctp_data_chunk {
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struct sctp_chunkhdr ch;
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struct sctp_data dp;
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};
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/*
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* Structures for the control chunks
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*/
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/* Initiate (INIT)/Initiate Ack (INIT ACK) */
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struct sctp_init {
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uint32_t initiate_tag; /* initiate tag */
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uint32_t a_rwnd; /* a_rwnd */
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uint16_t num_outbound_streams; /* OS */
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uint16_t num_inbound_streams; /* MIS */
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uint32_t initial_tsn; /* I-TSN */
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/* optional param's follow */
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};
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#define SCTP_IDENTIFICATION_SIZE 16
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#define SCTP_ADDRESS_SIZE 4
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/* state cookie header */
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struct sctp_state_cookie { /* this is our definition... */
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uint8_t identification[SCTP_IDENTIFICATION_SIZE]; /* id of who we are */
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uint32_t cookie_life; /* life I will award this cookie */
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uint32_t tie_tag_my_vtag; /* my tag in old association */
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uint32_t tie_tag_peer_vtag; /* peers tag in old association */
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uint32_t peers_vtag; /* peers tag in INIT (for quick ref) */
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uint32_t my_vtag; /* my tag in INIT-ACK (for quick ref) */
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struct timeval time_entered; /* the time I built cookie */
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uint32_t address[SCTP_ADDRESS_SIZE]; /* 4 ints/128 bits */
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uint32_t addr_type; /* address type */
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uint32_t laddress[SCTP_ADDRESS_SIZE]; /* my local from address */
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uint32_t laddr_type; /* my local from address type */
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uint32_t scope_id; /* v6 scope id for link-locals */
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uint16_t peerport; /* port address of the peer in the INIT */
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uint16_t myport; /* my port address used in the INIT */
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uint8_t ipv4_addr_legal;/* Are V4 addr legal? */
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uint8_t ipv6_addr_legal;/* Are V6 addr legal? */
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uint8_t local_scope; /* IPv6 local scope flag */
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uint8_t site_scope; /* IPv6 site scope flag */
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uint8_t ipv4_scope; /* IPv4 private addr scope */
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uint8_t loopback_scope; /* loopback scope information */
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uint16_t reserved;
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/*
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* at the end is tacked on the INIT chunk and the INIT-ACK chunk
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* (minus the cookie).
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*/
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};
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struct sctp_inv_mandatory_param {
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uint16_t cause;
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uint16_t length;
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uint32_t num_param;
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uint16_t param;
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/*
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* We include this to 0 it since only a missing cookie will cause
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* this error.
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*/
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uint16_t resv;
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};
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struct sctp_unresolv_addr {
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uint16_t cause;
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uint16_t length;
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uint16_t addr_type;
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uint16_t reserved; /* Only one invalid addr type */
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};
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/* state cookie parameter */
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struct sctp_state_cookie_param {
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struct sctp_paramhdr ph;
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struct sctp_state_cookie cookie;
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};
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struct sctp_init_chunk {
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struct sctp_chunkhdr ch;
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struct sctp_init init;
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};
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struct sctp_init_msg {
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struct sctphdr sh;
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struct sctp_init_chunk msg;
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};
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/* ... used for both INIT and INIT ACK */
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#define sctp_init_ack sctp_init
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#define sctp_init_ack_chunk sctp_init_chunk
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#define sctp_init_ack_msg sctp_init_msg
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/* Selective Ack (SACK) */
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struct sctp_gap_ack_block {
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uint16_t start; /* Gap Ack block start */
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uint16_t end; /* Gap Ack block end */
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};
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struct sctp_sack {
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uint32_t cum_tsn_ack; /* cumulative TSN Ack */
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uint32_t a_rwnd; /* updated a_rwnd of sender */
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uint16_t num_gap_ack_blks; /* number of Gap Ack blocks */
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uint16_t num_dup_tsns; /* number of duplicate TSNs */
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/* struct sctp_gap_ack_block's follow */
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/* uint32_t duplicate_tsn's follow */
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};
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struct sctp_sack_chunk {
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struct sctp_chunkhdr ch;
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struct sctp_sack sack;
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};
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/* Heartbeat Request (HEARTBEAT) */
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struct sctp_heartbeat {
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struct sctp_heartbeat_info_param hb_info;
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};
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struct sctp_heartbeat_chunk {
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struct sctp_chunkhdr ch;
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struct sctp_heartbeat heartbeat;
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};
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/* ... used for Heartbeat Ack (HEARTBEAT ACK) */
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#define sctp_heartbeat_ack sctp_heartbeat
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#define sctp_heartbeat_ack_chunk sctp_heartbeat_chunk
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/* Abort Asssociation (ABORT) */
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struct sctp_abort_chunk {
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struct sctp_chunkhdr ch;
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/* optional error cause may follow */
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};
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struct sctp_abort_msg {
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struct sctphdr sh;
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struct sctp_abort_chunk msg;
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};
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/* Shutdown Association (SHUTDOWN) */
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struct sctp_shutdown_chunk {
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struct sctp_chunkhdr ch;
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uint32_t cumulative_tsn_ack;
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};
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/* Shutdown Acknowledgment (SHUTDOWN ACK) */
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struct sctp_shutdown_ack_chunk {
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struct sctp_chunkhdr ch;
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};
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/* Operation Error (ERROR) */
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struct sctp_error_chunk {
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struct sctp_chunkhdr ch;
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/* optional error causes follow */
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};
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/* Cookie Echo (COOKIE ECHO) */
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struct sctp_cookie_echo_chunk {
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struct sctp_chunkhdr ch;
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struct sctp_state_cookie cookie;
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};
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/* Cookie Acknowledgment (COOKIE ACK) */
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struct sctp_cookie_ack_chunk {
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struct sctp_chunkhdr ch;
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};
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/* Explicit Congestion Notification Echo (ECNE) */
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struct sctp_ecne_chunk {
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struct sctp_chunkhdr ch;
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uint32_t tsn;
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};
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/* Congestion Window Reduced (CWR) */
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struct sctp_cwr_chunk {
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struct sctp_chunkhdr ch;
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uint32_t tsn;
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};
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/* Shutdown Complete (SHUTDOWN COMPLETE) */
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struct sctp_shutdown_complete_chunk {
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struct sctp_chunkhdr ch;
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};
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/* Oper error holding a stale cookie */
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struct sctp_stale_cookie_msg {
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struct sctp_paramhdr ph;/* really an error cause */
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uint32_t time_usec;
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};
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struct sctp_adaptation_layer_indication {
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struct sctp_paramhdr ph;
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uint32_t indication;
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};
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struct sctp_cookie_while_shutting_down {
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struct sctphdr sh;
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struct sctp_chunkhdr ch;
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struct sctp_paramhdr ph;/* really an error cause */
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};
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struct sctp_shutdown_complete_msg {
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struct sctphdr sh;
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struct sctp_shutdown_complete_chunk shut_cmp;
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};
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/*
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* draft-ietf-tsvwg-addip-sctp
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*/
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/* Address/Stream Configuration Change (ASCONF) */
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struct sctp_asconf_chunk {
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struct sctp_chunkhdr ch;
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uint32_t serial_number;
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/* lookup address parameter (mandatory) */
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/* asconf parameters follow */
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};
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/* Address/Stream Configuration Acknowledge (ASCONF ACK) */
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struct sctp_asconf_ack_chunk {
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struct sctp_chunkhdr ch;
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uint32_t serial_number;
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/* asconf parameters follow */
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};
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/* draft-ietf-tsvwg-prsctp */
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/* Forward Cumulative TSN (FORWARD TSN) */
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struct sctp_forward_tsn_chunk {
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struct sctp_chunkhdr ch;
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uint32_t new_cumulative_tsn;
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/* stream/sequence pairs (sctp_strseq) follow */
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};
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struct sctp_strseq {
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uint16_t stream;
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uint16_t sequence;
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};
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struct sctp_forward_tsn_msg {
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struct sctphdr sh;
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struct sctp_forward_tsn_chunk msg;
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};
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/* should be a multiple of 4 - 1 aka 3/7/11 etc. */
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#define SCTP_NUM_DB_TO_VERIFY 31
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struct sctp_chunk_desc {
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uint8_t chunk_type;
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uint8_t data_bytes[SCTP_NUM_DB_TO_VERIFY];
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uint32_t tsn_ifany;
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};
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struct sctp_pktdrop_chunk {
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struct sctp_chunkhdr ch;
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uint32_t bottle_bw;
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uint32_t current_onq;
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uint16_t trunc_len;
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uint16_t reserved;
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uint8_t data[0];
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};
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/**********STREAM RESET STUFF ******************/
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struct sctp_stream_reset_out_request {
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struct sctp_paramhdr ph;
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uint32_t request_seq; /* monotonically increasing seq no */
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uint32_t response_seq; /* if a response, the resp seq no */
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uint32_t send_reset_at_tsn; /* last TSN I assigned outbound */
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uint16_t list_of_streams[0]; /* if not all list of streams */
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};
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struct sctp_stream_reset_in_request {
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struct sctp_paramhdr ph;
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uint32_t request_seq;
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uint16_t list_of_streams[0]; /* if not all list of streams */
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};
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struct sctp_stream_reset_tsn_request {
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struct sctp_paramhdr ph;
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uint32_t request_seq;
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};
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struct sctp_stream_reset_response {
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struct sctp_paramhdr ph;
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uint32_t response_seq; /* if a response, the resp seq no */
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uint32_t result;
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};
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struct sctp_stream_reset_response_tsn {
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struct sctp_paramhdr ph;
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uint32_t response_seq; /* if a response, the resp seq no */
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uint32_t result;
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uint32_t senders_next_tsn;
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uint32_t receivers_next_tsn;
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};
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#define SCTP_STREAM_RESET_NOTHING 0x00000000 /* Nothing for me to do */
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#define SCTP_STREAM_RESET_PERFORMED 0x00000001 /* Did it */
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#define SCTP_STREAM_RESET_DENIED 0x00000002 /* refused to do it */
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#define SCTP_STREAM_RESET_ERROR_STR 0x00000003 /* bad Stream no */
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#define SCTP_STREAM_RESET_TRY_LATER 0x00000004 /* collision, try again */
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#define SCTP_STREAM_RESET_BAD_SEQNO 0x00000005 /* bad str-reset seq no */
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/*
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* convience structures, note that if you are making a request for specific
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* streams then the request will need to be an overlay structure.
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*/
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struct sctp_stream_reset_out_req {
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struct sctp_chunkhdr ch;
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struct sctp_stream_reset_out_request sr_req;
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};
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struct sctp_stream_reset_in_req {
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struct sctp_chunkhdr ch;
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struct sctp_stream_reset_in_request sr_req;
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};
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struct sctp_stream_reset_tsn_req {
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struct sctp_chunkhdr ch;
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struct sctp_stream_reset_tsn_request sr_req;
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};
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struct sctp_stream_reset_resp {
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struct sctp_chunkhdr ch;
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struct sctp_stream_reset_response sr_resp;
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};
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/* respone only valid with a TSN request */
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struct sctp_stream_reset_resp_tsn {
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struct sctp_chunkhdr ch;
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struct sctp_stream_reset_response_tsn sr_resp;
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};
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/****************************************************/
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/*
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* Authenticated chunks support draft-ietf-tsvwg-sctp-auth
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*/
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/* Should we make the max be 32? */
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#define SCTP_RANDOM_MAX_SIZE 256
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struct sctp_auth_random {
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struct sctp_paramhdr ph;/* type = 0x8002 */
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uint8_t random_data[0];
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};
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struct sctp_auth_chunk_list {
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struct sctp_paramhdr ph;/* type = 0x8003 */
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uint8_t chunk_types[0];
|
|
};
|
|
|
|
struct sctp_auth_hmac_algo {
|
|
struct sctp_paramhdr ph;/* type = 0x8004 */
|
|
uint16_t hmac_ids[0];
|
|
};
|
|
|
|
struct sctp_auth_chunk {
|
|
struct sctp_chunkhdr ch;
|
|
uint16_t shared_key_id;
|
|
uint16_t hmac_id;
|
|
uint8_t hmac[0];
|
|
};
|
|
|
|
struct sctp_auth_invalid_hmac {
|
|
struct sctp_paramhdr ph;
|
|
uint16_t hmac_id;
|
|
uint16_t padding;
|
|
};
|
|
|
|
/*
|
|
* we pre-reserve enough room for a ECNE or CWR AND a SACK with no missing
|
|
* pieces. If ENCE is missing we could have a couple of blocks. This way we
|
|
* optimize so we MOST likely can bundle a SACK/ECN with the smallest size
|
|
* data chunk I will split into. We could increase throughput slightly by
|
|
* taking out these two but the 24-sack/8-CWR i.e. 32 bytes I pre-reserve I
|
|
* feel is worth it for now.
|
|
*/
|
|
#ifndef SCTP_MAX_OVERHEAD
|
|
#ifdef INET6
|
|
#define SCTP_MAX_OVERHEAD (sizeof(struct sctp_data_chunk) + \
|
|
sizeof(struct sctphdr) + \
|
|
sizeof(struct sctp_ecne_chunk) + \
|
|
sizeof(struct sctp_sack_chunk) + \
|
|
sizeof(struct ip6_hdr))
|
|
|
|
#define SCTP_MED_OVERHEAD (sizeof(struct sctp_data_chunk) + \
|
|
sizeof(struct sctphdr) + \
|
|
sizeof(struct ip6_hdr))
|
|
|
|
|
|
#define SCTP_MIN_OVERHEAD (sizeof(struct ip6_hdr) + \
|
|
sizeof(struct sctphdr))
|
|
|
|
#else
|
|
#define SCTP_MAX_OVERHEAD (sizeof(struct sctp_data_chunk) + \
|
|
sizeof(struct sctphdr) + \
|
|
sizeof(struct sctp_ecne_chunk) + \
|
|
sizeof(struct sctp_sack_chunk) + \
|
|
sizeof(struct ip))
|
|
|
|
#define SCTP_MED_OVERHEAD (sizeof(struct sctp_data_chunk) + \
|
|
sizeof(struct sctphdr) + \
|
|
sizeof(struct ip))
|
|
|
|
|
|
#define SCTP_MIN_OVERHEAD (sizeof(struct ip) + \
|
|
sizeof(struct sctphdr))
|
|
|
|
#endif /* INET6 */
|
|
#endif /* !SCTP_MAX_OVERHEAD */
|
|
|
|
#define SCTP_MED_V4_OVERHEAD (sizeof(struct sctp_data_chunk) + \
|
|
sizeof(struct sctphdr) + \
|
|
sizeof(struct ip))
|
|
|
|
#define SCTP_MIN_V4_OVERHEAD (sizeof(struct ip) + \
|
|
sizeof(struct sctphdr))
|
|
|
|
#endif /* !__sctp_header_h__ */
|