586 lines
17 KiB
C
586 lines
17 KiB
C
/*-
|
|
* Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
|
|
* Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
|
|
* Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* a) Redistributions of source code must retain the above copyright notice,
|
|
* this list of conditions and the following disclaimer.
|
|
*
|
|
* b) Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the distribution.
|
|
*
|
|
* c) Neither the name of Cisco Systems, Inc. nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
|
|
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
|
|
* THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#ifndef _NETINET_SCTP_HEADER_H_
|
|
#define _NETINET_SCTP_HEADER_H_
|
|
|
|
#include <sys/time.h>
|
|
#include <netinet/sctp.h>
|
|
#include <netinet/sctp_constants.h>
|
|
|
|
#define SCTP_PACKED __attribute__((packed))
|
|
|
|
/*
|
|
* Parameter structures
|
|
*/
|
|
struct sctp_ipv4addr_param {
|
|
struct sctp_paramhdr ph;/* type=SCTP_IPV4_PARAM_TYPE, len=8 */
|
|
uint32_t addr; /* IPV4 address */
|
|
} SCTP_PACKED;
|
|
|
|
#define SCTP_V6_ADDR_BYTES 16
|
|
|
|
|
|
struct sctp_ipv6addr_param {
|
|
struct sctp_paramhdr ph;/* type=SCTP_IPV6_PARAM_TYPE, len=20 */
|
|
uint8_t addr[SCTP_V6_ADDR_BYTES]; /* IPV6 address */
|
|
} SCTP_PACKED;
|
|
|
|
/* Cookie Preservative */
|
|
struct sctp_cookie_perserve_param {
|
|
struct sctp_paramhdr ph;/* type=SCTP_COOKIE_PRESERVE, len=8 */
|
|
uint32_t time; /* time in ms to extend cookie */
|
|
} SCTP_PACKED;
|
|
|
|
#define SCTP_ARRAY_MIN_LEN 1
|
|
/* Host Name Address */
|
|
struct sctp_host_name_param {
|
|
struct sctp_paramhdr ph;/* type=SCTP_HOSTNAME_ADDRESS */
|
|
char name[SCTP_ARRAY_MIN_LEN]; /* host name */
|
|
} SCTP_PACKED;
|
|
|
|
/*
|
|
* This is the maximum padded size of a s-a-p
|
|
* so paramheadr + 3 address types (6 bytes) + 2 byte pad = 12
|
|
*/
|
|
#define SCTP_MAX_ADDR_PARAMS_SIZE 12
|
|
/* supported address type */
|
|
struct sctp_supported_addr_param {
|
|
struct sctp_paramhdr ph;/* type=SCTP_SUPPORTED_ADDRTYPE */
|
|
uint16_t addr_type[2]; /* array of supported address types */
|
|
} SCTP_PACKED;
|
|
|
|
/* heartbeat info parameter */
|
|
struct sctp_heartbeat_info_param {
|
|
struct sctp_paramhdr ph;
|
|
uint32_t time_value_1;
|
|
uint32_t time_value_2;
|
|
uint32_t random_value1;
|
|
uint32_t random_value2;
|
|
uint8_t addr_family;
|
|
uint8_t addr_len;
|
|
/* make sure that this structure is 4 byte aligned */
|
|
uint8_t padding[2];
|
|
char address[SCTP_ADDRMAX];
|
|
} SCTP_PACKED;
|
|
|
|
|
|
/* draft-ietf-tsvwg-prsctp */
|
|
/* PR-SCTP supported parameter */
|
|
struct sctp_prsctp_supported_param {
|
|
struct sctp_paramhdr ph;
|
|
} SCTP_PACKED;
|
|
|
|
|
|
/* draft-ietf-tsvwg-addip-sctp */
|
|
struct sctp_asconf_paramhdr { /* an ASCONF "parameter" */
|
|
struct sctp_paramhdr ph;/* a SCTP parameter header */
|
|
uint32_t correlation_id;/* correlation id for this param */
|
|
} SCTP_PACKED;
|
|
|
|
struct sctp_asconf_addr_param { /* an ASCONF address parameter */
|
|
struct sctp_asconf_paramhdr aph; /* asconf "parameter" */
|
|
struct sctp_ipv6addr_param addrp; /* max storage size */
|
|
} SCTP_PACKED;
|
|
|
|
|
|
struct sctp_asconf_tag_param { /* an ASCONF NAT-Vtag parameter */
|
|
struct sctp_asconf_paramhdr aph; /* asconf "parameter" */
|
|
uint32_t local_vtag;
|
|
uint32_t remote_vtag;
|
|
} SCTP_PACKED;
|
|
|
|
|
|
struct sctp_asconf_addrv4_param { /* an ASCONF address (v4) parameter */
|
|
struct sctp_asconf_paramhdr aph; /* asconf "parameter" */
|
|
struct sctp_ipv4addr_param addrp; /* max storage size */
|
|
} SCTP_PACKED;
|
|
|
|
#define SCTP_MAX_SUPPORTED_EXT 256
|
|
|
|
struct sctp_supported_chunk_types_param {
|
|
struct sctp_paramhdr ph;/* type = 0x8008 len = x */
|
|
uint8_t chunk_types[];
|
|
} SCTP_PACKED;
|
|
|
|
|
|
/*
|
|
* Structures for DATA chunks
|
|
*/
|
|
struct sctp_data {
|
|
uint32_t tsn;
|
|
uint16_t stream_id;
|
|
uint16_t stream_sequence;
|
|
uint32_t protocol_id;
|
|
/* user data follows */
|
|
} SCTP_PACKED;
|
|
|
|
struct sctp_data_chunk {
|
|
struct sctp_chunkhdr ch;
|
|
struct sctp_data dp;
|
|
} SCTP_PACKED;
|
|
|
|
struct sctp_idata {
|
|
uint32_t tsn;
|
|
uint16_t stream_id;
|
|
uint16_t reserved; /* Where does the SSN go? */
|
|
uint32_t msg_id;
|
|
union {
|
|
uint32_t protocol_id;
|
|
uint32_t fsn; /* Fragment Sequence Number */
|
|
} ppid_fsn;
|
|
/* user data follows */
|
|
} SCTP_PACKED;
|
|
|
|
struct sctp_idata_chunk {
|
|
struct sctp_chunkhdr ch;
|
|
struct sctp_idata dp;
|
|
} SCTP_PACKED;
|
|
|
|
/*
|
|
* Structures for the control chunks
|
|
*/
|
|
|
|
/* Initiate (INIT)/Initiate Ack (INIT ACK) */
|
|
struct sctp_init {
|
|
uint32_t initiate_tag; /* initiate tag */
|
|
uint32_t a_rwnd; /* a_rwnd */
|
|
uint16_t num_outbound_streams; /* OS */
|
|
uint16_t num_inbound_streams; /* MIS */
|
|
uint32_t initial_tsn; /* I-TSN */
|
|
/* optional param's follow */
|
|
} SCTP_PACKED;
|
|
|
|
#define SCTP_IDENTIFICATION_SIZE 16
|
|
#define SCTP_ADDRESS_SIZE 4
|
|
#define SCTP_RESERVE_SPACE 6
|
|
/* state cookie header */
|
|
struct sctp_state_cookie { /* this is our definition... */
|
|
uint8_t identification[SCTP_IDENTIFICATION_SIZE]; /* id of who we are */
|
|
struct timeval time_entered; /* the time I built cookie */
|
|
uint32_t cookie_life; /* life I will award this cookie */
|
|
uint32_t tie_tag_my_vtag; /* my tag in old association */
|
|
|
|
uint32_t tie_tag_peer_vtag; /* peers tag in old association */
|
|
uint32_t peers_vtag; /* peers tag in INIT (for quick ref) */
|
|
|
|
uint32_t my_vtag; /* my tag in INIT-ACK (for quick ref) */
|
|
uint32_t address[SCTP_ADDRESS_SIZE]; /* 4 ints/128 bits */
|
|
uint32_t addr_type; /* address type */
|
|
uint32_t laddress[SCTP_ADDRESS_SIZE]; /* my local from address */
|
|
uint32_t laddr_type; /* my local from address type */
|
|
uint32_t scope_id; /* v6 scope id for link-locals */
|
|
|
|
uint16_t peerport; /* port address of the peer in the INIT */
|
|
uint16_t myport; /* my port address used in the INIT */
|
|
uint8_t ipv4_addr_legal;/* Are V4 addr legal? */
|
|
uint8_t ipv6_addr_legal;/* Are V6 addr legal? */
|
|
uint8_t local_scope; /* IPv6 local scope flag */
|
|
uint8_t site_scope; /* IPv6 site scope flag */
|
|
|
|
uint8_t ipv4_scope; /* IPv4 private addr scope */
|
|
uint8_t loopback_scope; /* loopback scope information */
|
|
uint8_t reserved[SCTP_RESERVE_SPACE]; /* Align to 64 bits */
|
|
/*
|
|
* at the end is tacked on the INIT chunk and the INIT-ACK chunk
|
|
* (minus the cookie).
|
|
*/
|
|
} SCTP_PACKED;
|
|
|
|
/* state cookie parameter */
|
|
struct sctp_state_cookie_param {
|
|
struct sctp_paramhdr ph;
|
|
struct sctp_state_cookie cookie;
|
|
} SCTP_PACKED;
|
|
|
|
struct sctp_init_chunk {
|
|
struct sctp_chunkhdr ch;
|
|
struct sctp_init init;
|
|
} SCTP_PACKED;
|
|
|
|
struct sctp_init_msg {
|
|
struct sctphdr sh;
|
|
struct sctp_init_chunk msg;
|
|
} SCTP_PACKED;
|
|
|
|
/* ... used for both INIT and INIT ACK */
|
|
#define sctp_init_ack sctp_init
|
|
#define sctp_init_ack_chunk sctp_init_chunk
|
|
#define sctp_init_ack_msg sctp_init_msg
|
|
|
|
|
|
/* Selective Ack (SACK) */
|
|
struct sctp_gap_ack_block {
|
|
uint16_t start; /* Gap Ack block start */
|
|
uint16_t end; /* Gap Ack block end */
|
|
} SCTP_PACKED;
|
|
|
|
struct sctp_sack {
|
|
uint32_t cum_tsn_ack; /* cumulative TSN Ack */
|
|
uint32_t a_rwnd; /* updated a_rwnd of sender */
|
|
uint16_t num_gap_ack_blks; /* number of Gap Ack blocks */
|
|
uint16_t num_dup_tsns; /* number of duplicate TSNs */
|
|
/* struct sctp_gap_ack_block's follow */
|
|
/* uint32_t duplicate_tsn's follow */
|
|
} SCTP_PACKED;
|
|
|
|
struct sctp_sack_chunk {
|
|
struct sctp_chunkhdr ch;
|
|
struct sctp_sack sack;
|
|
} SCTP_PACKED;
|
|
|
|
struct sctp_nr_sack {
|
|
uint32_t cum_tsn_ack; /* cumulative TSN Ack */
|
|
uint32_t a_rwnd; /* updated a_rwnd of sender */
|
|
uint16_t num_gap_ack_blks; /* number of Gap Ack blocks */
|
|
uint16_t num_nr_gap_ack_blks; /* number of NR Gap Ack blocks */
|
|
uint16_t num_dup_tsns; /* number of duplicate TSNs */
|
|
uint16_t reserved; /* not currently used */
|
|
/* struct sctp_gap_ack_block's follow */
|
|
/* uint32_t duplicate_tsn's follow */
|
|
} SCTP_PACKED;
|
|
|
|
struct sctp_nr_sack_chunk {
|
|
struct sctp_chunkhdr ch;
|
|
struct sctp_nr_sack nr_sack;
|
|
} SCTP_PACKED;
|
|
|
|
|
|
/* Heartbeat Request (HEARTBEAT) */
|
|
struct sctp_heartbeat {
|
|
struct sctp_heartbeat_info_param hb_info;
|
|
} SCTP_PACKED;
|
|
|
|
struct sctp_heartbeat_chunk {
|
|
struct sctp_chunkhdr ch;
|
|
struct sctp_heartbeat heartbeat;
|
|
} SCTP_PACKED;
|
|
|
|
/* ... used for Heartbeat Ack (HEARTBEAT ACK) */
|
|
#define sctp_heartbeat_ack sctp_heartbeat
|
|
#define sctp_heartbeat_ack_chunk sctp_heartbeat_chunk
|
|
|
|
|
|
/* Abort Asssociation (ABORT) */
|
|
struct sctp_abort_chunk {
|
|
struct sctp_chunkhdr ch;
|
|
/* optional error cause may follow */
|
|
} SCTP_PACKED;
|
|
|
|
struct sctp_abort_msg {
|
|
struct sctphdr sh;
|
|
struct sctp_abort_chunk msg;
|
|
} SCTP_PACKED;
|
|
|
|
|
|
/* Shutdown Association (SHUTDOWN) */
|
|
struct sctp_shutdown_chunk {
|
|
struct sctp_chunkhdr ch;
|
|
uint32_t cumulative_tsn_ack;
|
|
} SCTP_PACKED;
|
|
|
|
|
|
/* Shutdown Acknowledgment (SHUTDOWN ACK) */
|
|
struct sctp_shutdown_ack_chunk {
|
|
struct sctp_chunkhdr ch;
|
|
} SCTP_PACKED;
|
|
|
|
|
|
/* Operation Error (ERROR) */
|
|
struct sctp_error_chunk {
|
|
struct sctp_chunkhdr ch;
|
|
/* optional error causes follow */
|
|
} SCTP_PACKED;
|
|
|
|
|
|
/* Cookie Echo (COOKIE ECHO) */
|
|
struct sctp_cookie_echo_chunk {
|
|
struct sctp_chunkhdr ch;
|
|
struct sctp_state_cookie cookie;
|
|
} SCTP_PACKED;
|
|
|
|
/* Cookie Acknowledgment (COOKIE ACK) */
|
|
struct sctp_cookie_ack_chunk {
|
|
struct sctp_chunkhdr ch;
|
|
} SCTP_PACKED;
|
|
|
|
/* Explicit Congestion Notification Echo (ECNE) */
|
|
struct old_sctp_ecne_chunk {
|
|
struct sctp_chunkhdr ch;
|
|
uint32_t tsn;
|
|
} SCTP_PACKED;
|
|
|
|
struct sctp_ecne_chunk {
|
|
struct sctp_chunkhdr ch;
|
|
uint32_t tsn;
|
|
uint32_t num_pkts_since_cwr;
|
|
} SCTP_PACKED;
|
|
|
|
/* Congestion Window Reduced (CWR) */
|
|
struct sctp_cwr_chunk {
|
|
struct sctp_chunkhdr ch;
|
|
uint32_t tsn;
|
|
} SCTP_PACKED;
|
|
|
|
/* Shutdown Complete (SHUTDOWN COMPLETE) */
|
|
struct sctp_shutdown_complete_chunk {
|
|
struct sctp_chunkhdr ch;
|
|
} SCTP_PACKED;
|
|
|
|
struct sctp_adaptation_layer_indication {
|
|
struct sctp_paramhdr ph;
|
|
uint32_t indication;
|
|
} SCTP_PACKED;
|
|
|
|
/*
|
|
* draft-ietf-tsvwg-addip-sctp
|
|
*/
|
|
/* Address/Stream Configuration Change (ASCONF) */
|
|
struct sctp_asconf_chunk {
|
|
struct sctp_chunkhdr ch;
|
|
uint32_t serial_number;
|
|
/* lookup address parameter (mandatory) */
|
|
/* asconf parameters follow */
|
|
} SCTP_PACKED;
|
|
|
|
/* Address/Stream Configuration Acknowledge (ASCONF ACK) */
|
|
struct sctp_asconf_ack_chunk {
|
|
struct sctp_chunkhdr ch;
|
|
uint32_t serial_number;
|
|
/* asconf parameters follow */
|
|
} SCTP_PACKED;
|
|
|
|
/* draft-ietf-tsvwg-prsctp */
|
|
/* Forward Cumulative TSN (FORWARD TSN) */
|
|
struct sctp_forward_tsn_chunk {
|
|
struct sctp_chunkhdr ch;
|
|
uint32_t new_cumulative_tsn;
|
|
/* stream/sequence pairs (sctp_strseq) follow */
|
|
} SCTP_PACKED;
|
|
|
|
struct sctp_strseq {
|
|
uint16_t stream;
|
|
uint16_t sequence;
|
|
} SCTP_PACKED;
|
|
|
|
struct sctp_strseq_mid {
|
|
uint16_t stream;
|
|
uint16_t flags;
|
|
uint32_t msg_id;
|
|
};
|
|
|
|
struct sctp_forward_tsn_msg {
|
|
struct sctphdr sh;
|
|
struct sctp_forward_tsn_chunk msg;
|
|
} SCTP_PACKED;
|
|
|
|
/* should be a multiple of 4 - 1 aka 3/7/11 etc. */
|
|
|
|
#define SCTP_NUM_DB_TO_VERIFY 31
|
|
|
|
struct sctp_chunk_desc {
|
|
uint8_t chunk_type;
|
|
uint8_t data_bytes[SCTP_NUM_DB_TO_VERIFY];
|
|
uint32_t tsn_ifany;
|
|
} SCTP_PACKED;
|
|
|
|
|
|
struct sctp_pktdrop_chunk {
|
|
struct sctp_chunkhdr ch;
|
|
uint32_t bottle_bw;
|
|
uint32_t current_onq;
|
|
uint16_t trunc_len;
|
|
uint16_t reserved;
|
|
uint8_t data[];
|
|
} SCTP_PACKED;
|
|
|
|
/**********STREAM RESET STUFF ******************/
|
|
|
|
struct sctp_stream_reset_request {
|
|
struct sctp_paramhdr ph;
|
|
uint32_t request_seq;
|
|
} SCTP_PACKED;
|
|
|
|
struct sctp_stream_reset_out_request {
|
|
struct sctp_paramhdr ph;
|
|
uint32_t request_seq; /* monotonically increasing seq no */
|
|
uint32_t response_seq; /* if a response, the resp seq no */
|
|
uint32_t send_reset_at_tsn; /* last TSN I assigned outbound */
|
|
uint16_t list_of_streams[]; /* if not all list of streams */
|
|
} SCTP_PACKED;
|
|
|
|
struct sctp_stream_reset_in_request {
|
|
struct sctp_paramhdr ph;
|
|
uint32_t request_seq;
|
|
uint16_t list_of_streams[]; /* if not all list of streams */
|
|
} SCTP_PACKED;
|
|
|
|
struct sctp_stream_reset_tsn_request {
|
|
struct sctp_paramhdr ph;
|
|
uint32_t request_seq;
|
|
} SCTP_PACKED;
|
|
|
|
struct sctp_stream_reset_response {
|
|
struct sctp_paramhdr ph;
|
|
uint32_t response_seq; /* if a response, the resp seq no */
|
|
uint32_t result;
|
|
} SCTP_PACKED;
|
|
|
|
struct sctp_stream_reset_response_tsn {
|
|
struct sctp_paramhdr ph;
|
|
uint32_t response_seq; /* if a response, the resp seq no */
|
|
uint32_t result;
|
|
uint32_t senders_next_tsn;
|
|
uint32_t receivers_next_tsn;
|
|
} SCTP_PACKED;
|
|
|
|
struct sctp_stream_reset_add_strm {
|
|
struct sctp_paramhdr ph;
|
|
uint32_t request_seq;
|
|
uint16_t number_of_streams;
|
|
uint16_t reserved;
|
|
} SCTP_PACKED;
|
|
|
|
#define SCTP_STREAM_RESET_RESULT_NOTHING_TO_DO 0x00000000 /* XXX: unused */
|
|
#define SCTP_STREAM_RESET_RESULT_PERFORMED 0x00000001
|
|
#define SCTP_STREAM_RESET_RESULT_DENIED 0x00000002
|
|
#define SCTP_STREAM_RESET_RESULT_ERR__WRONG_SSN 0x00000003 /* XXX: unused */
|
|
#define SCTP_STREAM_RESET_RESULT_ERR_IN_PROGRESS 0x00000004
|
|
#define SCTP_STREAM_RESET_RESULT_ERR_BAD_SEQNO 0x00000005
|
|
#define SCTP_STREAM_RESET_RESULT_IN_PROGRESS 0x00000006 /* XXX: unused */
|
|
|
|
/*
|
|
* convience structures, note that if you are making a request for specific
|
|
* streams then the request will need to be an overlay structure.
|
|
*/
|
|
|
|
struct sctp_stream_reset_tsn_req {
|
|
struct sctp_chunkhdr ch;
|
|
struct sctp_stream_reset_tsn_request sr_req;
|
|
} SCTP_PACKED;
|
|
|
|
struct sctp_stream_reset_resp {
|
|
struct sctp_chunkhdr ch;
|
|
struct sctp_stream_reset_response sr_resp;
|
|
} SCTP_PACKED;
|
|
|
|
/* respone only valid with a TSN request */
|
|
struct sctp_stream_reset_resp_tsn {
|
|
struct sctp_chunkhdr ch;
|
|
struct sctp_stream_reset_response_tsn sr_resp;
|
|
} SCTP_PACKED;
|
|
|
|
/****************************************************/
|
|
|
|
/*
|
|
* Authenticated chunks support draft-ietf-tsvwg-sctp-auth
|
|
*/
|
|
|
|
/* Should we make the max be 32? */
|
|
#define SCTP_RANDOM_MAX_SIZE 256
|
|
struct sctp_auth_random {
|
|
struct sctp_paramhdr ph;/* type = 0x8002 */
|
|
uint8_t random_data[];
|
|
} SCTP_PACKED;
|
|
|
|
struct sctp_auth_chunk_list {
|
|
struct sctp_paramhdr ph;/* type = 0x8003 */
|
|
uint8_t chunk_types[];
|
|
} SCTP_PACKED;
|
|
|
|
struct sctp_auth_hmac_algo {
|
|
struct sctp_paramhdr ph;/* type = 0x8004 */
|
|
uint16_t hmac_ids[];
|
|
} SCTP_PACKED;
|
|
|
|
struct sctp_auth_chunk {
|
|
struct sctp_chunkhdr ch;
|
|
uint16_t shared_key_id;
|
|
uint16_t hmac_id;
|
|
uint8_t hmac[];
|
|
} SCTP_PACKED;
|
|
|
|
/*
|
|
* 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))
|
|
|
|
#undef SCTP_PACKED
|
|
#endif /* !__sctp_header_h__ */
|