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usrsctp.h
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/*-
* Copyright (c) 2009-2010 Brad Penoff
* Copyright (c) 2009-2010 Humaira Kamal
* Copyright (c) 2011-2012 Irene Ruengeler
* Copyright (c) 2011-2012 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*/
#ifndef __USRSCTP_H__
#define __USRSCTP_H__
#ifdef __cplusplus
extern "C" {
#endif
#include <errno.h>
#include <sys/types.h>
#ifdef _WIN32
#ifdef _MSC_VER
#pragma warning(disable: 4200)
#endif
#include <winsock2.h>
#include <ws2tcpip.h>
#else
#include <sys/socket.h>
#include <netinet/in.h>
#endif
#ifndef MSG_NOTIFICATION
/* This definition MUST be in sync with usrsctplib/user_socketvar.h */
#define MSG_NOTIFICATION 0x2000
#endif
#ifndef IPPROTO_SCTP
/* This is the IANA assigned protocol number of SCTP. */
#define IPPROTO_SCTP 132
#endif
#ifdef _WIN32
#if defined(_MSC_VER) && _MSC_VER >= 1600
#include <stdint.h>
#elif defined(SCTP_STDINT_INCLUDE)
#include SCTP_STDINT_INCLUDE
#else
#define uint8_t unsigned __int8
#define uint16_t unsigned __int16
#define uint32_t unsigned __int32
#define uint64_t unsigned __int64
#define int16_t __int16
#define int32_t __int32
#endif
#define ssize_t __int64
#define MSG_EOR 0x8
#ifndef EWOULDBLOCK
#define EWOULDBLOCK WSAEWOULDBLOCK
#endif
#ifndef EINPROGRESS
#define EINPROGRESS WSAEINPROGRESS
#endif
#define SHUT_RD 1
#define SHUT_WR 2
#define SHUT_RDWR 3
#endif
typedef uint32_t sctp_assoc_t;
#if defined(_WIN32) && defined(_MSC_VER)
#pragma pack (push, 1)
#define SCTP_PACKED
#else
#define SCTP_PACKED __attribute__((packed))
#endif
struct sctp_common_header {
uint16_t source_port;
uint16_t destination_port;
uint32_t verification_tag;
uint32_t crc32c;
} SCTP_PACKED;
#if defined(_WIN32) && defined(_MSC_VER)
#pragma pack()
#endif
#undef SCTP_PACKED
#define AF_CONN 123
/* The definition of struct sockaddr_conn MUST be in
* tune with other sockaddr_* structures.
*/
#if defined(__APPLE__) || defined(__Bitrig__) || defined(__DragonFly__) || \
defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__)
struct sockaddr_conn {
uint8_t sconn_len;
uint8_t sconn_family;
uint16_t sconn_port;
void *sconn_addr;
};
#else
struct sockaddr_conn {
uint16_t sconn_family;
uint16_t sconn_port;
void *sconn_addr;
};
#endif
union sctp_sockstore {
#if defined(INET)
struct sockaddr_in sin;
#endif
#if defined(INET6)
struct sockaddr_in6 sin6;
#endif
struct sockaddr_conn sconn;
struct sockaddr sa;
};
#define SCTP_FUTURE_ASSOC 0
#define SCTP_CURRENT_ASSOC 1
#define SCTP_ALL_ASSOC 2
/*** Structures and definitions to use the socket API ***/
#define SCTP_ALIGN_RESV_PAD 92
#define SCTP_ALIGN_RESV_PAD_SHORT 76
struct sctp_rcvinfo {
uint16_t rcv_sid;
uint16_t rcv_ssn;
uint16_t rcv_flags;
uint32_t rcv_ppid;
uint32_t rcv_tsn;
uint32_t rcv_cumtsn;
uint32_t rcv_context;
sctp_assoc_t rcv_assoc_id;
};
struct sctp_nxtinfo {
uint16_t nxt_sid;
uint16_t nxt_flags;
uint32_t nxt_ppid;
uint32_t nxt_length;
sctp_assoc_t nxt_assoc_id;
};
#define SCTP_NO_NEXT_MSG 0x0000
#define SCTP_NEXT_MSG_AVAIL 0x0001
#define SCTP_NEXT_MSG_ISCOMPLETE 0x0002
#define SCTP_NEXT_MSG_IS_UNORDERED 0x0004
#define SCTP_NEXT_MSG_IS_NOTIFICATION 0x0008
struct sctp_recvv_rn {
struct sctp_rcvinfo recvv_rcvinfo;
struct sctp_nxtinfo recvv_nxtinfo;
};
#define SCTP_RECVV_NOINFO 0
#define SCTP_RECVV_RCVINFO 1
#define SCTP_RECVV_NXTINFO 2
#define SCTP_RECVV_RN 3
#define SCTP_SENDV_NOINFO 0
#define SCTP_SENDV_SNDINFO 1
#define SCTP_SENDV_PRINFO 2
#define SCTP_SENDV_AUTHINFO 3
#define SCTP_SENDV_SPA 4
#define SCTP_SEND_SNDINFO_VALID 0x00000001
#define SCTP_SEND_PRINFO_VALID 0x00000002
#define SCTP_SEND_AUTHINFO_VALID 0x00000004
struct sctp_snd_all_completes {
uint16_t sall_stream;
uint16_t sall_flags;
uint32_t sall_ppid;
uint32_t sall_context;
uint32_t sall_num_sent;
uint32_t sall_num_failed;
};
struct sctp_sndinfo {
uint16_t snd_sid;
uint16_t snd_flags;
uint32_t snd_ppid;
uint32_t snd_context;
sctp_assoc_t snd_assoc_id;
};
struct sctp_prinfo {
uint16_t pr_policy;
uint32_t pr_value;
};
struct sctp_dprinfo {
uint16_t dpr_enabled;
struct timeval deadline;
};
struct sctp_authinfo {
uint16_t auth_keynumber;
};
struct sctp_sendv_spa {
uint32_t sendv_flags;
struct sctp_sndinfo sendv_sndinfo;
struct sctp_prinfo sendv_prinfo;
struct sctp_authinfo sendv_authinfo;
struct sctp_dprinfo sendv_dprinfo;
};
struct sctp_udpencaps {
struct sockaddr_storage sue_address;
uint32_t sue_assoc_id;
uint16_t sue_port;
};
/******** Notifications **************/
/* notification types */
#define SCTP_ASSOC_CHANGE 0x0001
#define SCTP_PEER_ADDR_CHANGE 0x0002
#define SCTP_REMOTE_ERROR 0x0003
#define SCTP_SEND_FAILED 0x0004
#define SCTP_SHUTDOWN_EVENT 0x0005
#define SCTP_ADAPTATION_INDICATION 0x0006
#define SCTP_PARTIAL_DELIVERY_EVENT 0x0007
#define SCTP_AUTHENTICATION_EVENT 0x0008
#define SCTP_STREAM_RESET_EVENT 0x0009
#define SCTP_SENDER_DRY_EVENT 0x000a
#define SCTP_NOTIFICATIONS_STOPPED_EVENT 0x000b
#define SCTP_ASSOC_RESET_EVENT 0x000c
#define SCTP_STREAM_CHANGE_EVENT 0x000d
#define SCTP_SEND_FAILED_EVENT 0x000e
/* notification event structures */
/* association change event */
struct sctp_assoc_change {
uint16_t sac_type;
uint16_t sac_flags;
uint32_t sac_length;
uint16_t sac_state;
uint16_t sac_error;
uint16_t sac_outbound_streams;
uint16_t sac_inbound_streams;
sctp_assoc_t sac_assoc_id;
uint8_t sac_info[]; /* not available yet */
};
/* sac_state values */
#define SCTP_COMM_UP 0x0001
#define SCTP_COMM_LOST 0x0002
#define SCTP_RESTART 0x0003
#define SCTP_SHUTDOWN_COMP 0x0004
#define SCTP_CANT_STR_ASSOC 0x0005
/* sac_info values */
#define SCTP_ASSOC_SUPPORTS_PR 0x01
#define SCTP_ASSOC_SUPPORTS_AUTH 0x02
#define SCTP_ASSOC_SUPPORTS_ASCONF 0x03
#define SCTP_ASSOC_SUPPORTS_MULTIBUF 0x04
#define SCTP_ASSOC_SUPPORTS_RE_CONFIG 0x05
#define SCTP_ASSOC_SUPPORTS_MAX 0x05
/* Address event */
struct sctp_paddr_change {
uint16_t spc_type;
uint16_t spc_flags;
uint32_t spc_length;
struct sockaddr_storage spc_aaddr;
uint32_t spc_state;
uint32_t spc_error;
sctp_assoc_t spc_assoc_id;
uint8_t spc_padding[4];
};
/* paddr state values */
#define SCTP_ADDR_AVAILABLE 0x0001
#define SCTP_ADDR_UNREACHABLE 0x0002
#define SCTP_ADDR_REMOVED 0x0003
#define SCTP_ADDR_ADDED 0x0004
#define SCTP_ADDR_MADE_PRIM 0x0005
#define SCTP_ADDR_CONFIRMED 0x0006
/* remote error events */
struct sctp_remote_error {
uint16_t sre_type;
uint16_t sre_flags;
uint32_t sre_length;
uint16_t sre_error;
sctp_assoc_t sre_assoc_id;
uint8_t sre_data[4];
};
/* shutdown event */
struct sctp_shutdown_event {
uint16_t sse_type;
uint16_t sse_flags;
uint32_t sse_length;
sctp_assoc_t sse_assoc_id;
};
/* Adaptation layer indication */
struct sctp_adaptation_event {
uint16_t sai_type;
uint16_t sai_flags;
uint32_t sai_length;
uint32_t sai_adaptation_ind;
sctp_assoc_t sai_assoc_id;
};
/* Partial delivery event */
struct sctp_pdapi_event {
uint16_t pdapi_type;
uint16_t pdapi_flags;
uint32_t pdapi_length;
uint32_t pdapi_indication;
uint32_t pdapi_stream;
uint32_t pdapi_seq;
sctp_assoc_t pdapi_assoc_id;
};
/* indication values */
#define SCTP_PARTIAL_DELIVERY_ABORTED 0x0001
/* SCTP authentication event */
struct sctp_authkey_event {
uint16_t auth_type;
uint16_t auth_flags;
uint32_t auth_length;
uint16_t auth_keynumber;
uint32_t auth_indication;
sctp_assoc_t auth_assoc_id;
};
/* indication values */
#define SCTP_AUTH_NEW_KEY 0x0001
#define SCTP_AUTH_NO_AUTH 0x0002
#define SCTP_AUTH_FREE_KEY 0x0003
/* SCTP sender dry event */
struct sctp_sender_dry_event {
uint16_t sender_dry_type;
uint16_t sender_dry_flags;
uint32_t sender_dry_length;
sctp_assoc_t sender_dry_assoc_id;
};
/* Stream reset event - subscribe to SCTP_STREAM_RESET_EVENT */
struct sctp_stream_reset_event {
uint16_t strreset_type;
uint16_t strreset_flags;
uint32_t strreset_length;
sctp_assoc_t strreset_assoc_id;
uint16_t strreset_stream_list[];
};
/* flags in stream_reset_event (strreset_flags) */
#define SCTP_STREAM_RESET_INCOMING_SSN 0x0001
#define SCTP_STREAM_RESET_OUTGOING_SSN 0x0002
#define SCTP_STREAM_RESET_DENIED 0x0004 /* SCTP_STRRESET_FAILED */
#define SCTP_STREAM_RESET_FAILED 0x0008 /* SCTP_STRRESET_FAILED */
#define SCTP_STREAM_CHANGED_DENIED 0x0010
#define SCTP_STREAM_RESET_INCOMING 0x00000001
#define SCTP_STREAM_RESET_OUTGOING 0x00000002
/* Assoc reset event - subscribe to SCTP_ASSOC_RESET_EVENT */
struct sctp_assoc_reset_event {
uint16_t assocreset_type;
uint16_t assocreset_flags;
uint32_t assocreset_length;
sctp_assoc_t assocreset_assoc_id;
uint32_t assocreset_local_tsn;
uint32_t assocreset_remote_tsn;
};
#define SCTP_ASSOC_RESET_DENIED 0x0004
#define SCTP_ASSOC_RESET_FAILED 0x0008
/* Stream change event - subscribe to SCTP_STREAM_CHANGE_EVENT */
struct sctp_stream_change_event {
uint16_t strchange_type;
uint16_t strchange_flags;
uint32_t strchange_length;
sctp_assoc_t strchange_assoc_id;
uint16_t strchange_instrms;
uint16_t strchange_outstrms;
};
#define SCTP_STREAM_CHANGE_DENIED 0x0004
#define SCTP_STREAM_CHANGE_FAILED 0x0008
/* SCTP send failed event */
struct sctp_send_failed_event {
uint16_t ssfe_type;
uint16_t ssfe_flags;
uint32_t ssfe_length;
uint32_t ssfe_error;
struct sctp_sndinfo ssfe_info;
sctp_assoc_t ssfe_assoc_id;
uint8_t ssfe_data[];
};
/* flag that indicates state of data */
#define SCTP_DATA_UNSENT 0x0001 /* inqueue never on wire */
#define SCTP_DATA_SENT 0x0002 /* on wire at failure */
/* SCTP event option */
struct sctp_event {
sctp_assoc_t se_assoc_id;
uint16_t se_type;
uint8_t se_on;
};
union sctp_notification {
struct sctp_tlv {
uint16_t sn_type;
uint16_t sn_flags;
uint32_t sn_length;
} sn_header;
struct sctp_assoc_change sn_assoc_change;
struct sctp_paddr_change sn_paddr_change;
struct sctp_remote_error sn_remote_error;
struct sctp_shutdown_event sn_shutdown_event;
struct sctp_adaptation_event sn_adaptation_event;
struct sctp_pdapi_event sn_pdapi_event;
struct sctp_authkey_event sn_auth_event;
struct sctp_sender_dry_event sn_sender_dry_event;
struct sctp_send_failed_event sn_send_failed_event;
struct sctp_stream_reset_event sn_strreset_event;
struct sctp_assoc_reset_event sn_assocreset_event;
struct sctp_stream_change_event sn_strchange_event;
};
struct sctp_event_subscribe {
uint8_t sctp_data_io_event;
uint8_t sctp_association_event;
uint8_t sctp_address_event;
uint8_t sctp_send_failure_event;
uint8_t sctp_peer_error_event;
uint8_t sctp_shutdown_event;
uint8_t sctp_partial_delivery_event;
uint8_t sctp_adaptation_layer_event;
uint8_t sctp_authentication_event;
uint8_t sctp_sender_dry_event;
uint8_t sctp_stream_reset_event;
};
/* Flags that go into the sinfo->sinfo_flags field */
#define SCTP_NOTIFICATION 0x0010 /* next message is a notification */
#define SCTP_COMPLETE 0x0020 /* next message is complete */
#define SCTP_EOF 0x0100 /* Start shutdown procedures */
#define SCTP_ABORT 0x0200 /* Send an ABORT to peer */
#define SCTP_UNORDERED 0x0400 /* Message is un-ordered */
#define SCTP_ADDR_OVER 0x0800 /* Override the primary-address */
#define SCTP_SENDALL 0x1000 /* Send this on all associations */
#define SCTP_EOR 0x2000 /* end of message signal */
#define SCTP_SACK_IMMEDIATELY 0x4000 /* Set I-Bit */
#define INVALID_SINFO_FLAG(x) (((x) & 0xfffffff0 \
& ~(SCTP_EOF | SCTP_ABORT | SCTP_UNORDERED |\
SCTP_ADDR_OVER | SCTP_SENDALL | SCTP_EOR |\
SCTP_SACK_IMMEDIATELY)) != 0)
/* for the endpoint */
/* The lower byte is an enumeration of PR-SCTP policies */
#define SCTP_PR_SCTP_NONE 0x0000 /* Reliable transfer */
#define SCTP_PR_SCTP_TTL 0x0001 /* Time based PR-SCTP */
#define SCTP_PR_SCTP_BUF 0x0002 /* Buffer based PR-SCTP */
#define SCTP_PR_SCTP_RTX 0x0003 /* Number of retransmissions based PR-SCTP */
#define PR_SCTP_POLICY(x) ((x) & 0x0f)
#define PR_SCTP_ENABLED(x) (PR_SCTP_POLICY(x) != SCTP_PR_SCTP_NONE)
#define PR_SCTP_TTL_ENABLED(x) (PR_SCTP_POLICY(x) == SCTP_PR_SCTP_TTL)
#define PR_SCTP_BUF_ENABLED(x) (PR_SCTP_POLICY(x) == SCTP_PR_SCTP_BUF)
#define PR_SCTP_RTX_ENABLED(x) (PR_SCTP_POLICY(x) == SCTP_PR_SCTP_RTX)
#define PR_SCTP_INVALID_POLICY(x) (PR_SCTP_POLICY(x) > SCTP_PR_SCTP_RTX)
/*
* user socket options: socket API defined
*/
/*
* read-write options
*/
#define SCTP_RTOINFO 0x00000001
#define SCTP_ASSOCINFO 0x00000002
#define SCTP_INITMSG 0x00000003
#define SCTP_NODELAY 0x00000004
#define SCTP_AUTOCLOSE 0x00000005
#define SCTP_PRIMARY_ADDR 0x00000007
#define SCTP_ADAPTATION_LAYER 0x00000008
#define SCTP_DISABLE_FRAGMENTS 0x00000009
#define SCTP_PEER_ADDR_PARAMS 0x0000000a
/* ancillary data/notification interest options */
/* Without this applied we will give V4 and V6 addresses on a V6 socket */
#define SCTP_I_WANT_MAPPED_V4_ADDR 0x0000000d
#define SCTP_MAXSEG 0x0000000e
#define SCTP_DELAYED_SACK 0x0000000f
#define SCTP_FRAGMENT_INTERLEAVE 0x00000010
#define SCTP_PARTIAL_DELIVERY_POINT 0x00000011
/* authentication support */
#define SCTP_HMAC_IDENT 0x00000014
#define SCTP_AUTH_ACTIVE_KEY 0x00000015
#define SCTP_AUTO_ASCONF 0x00000018
#define SCTP_MAX_BURST 0x00000019
/* assoc level context */
#define SCTP_CONTEXT 0x0000001a
/* explicit EOR signalling */
#define SCTP_EXPLICIT_EOR 0x0000001b
#define SCTP_REUSE_PORT 0x0000001c
#define SCTP_EVENT 0x0000001e
#define SCTP_RECVRCVINFO 0x0000001f
#define SCTP_RECVNXTINFO 0x00000020
#define SCTP_DEFAULT_SNDINFO 0x00000021
#define SCTP_DEFAULT_PRINFO 0x00000022
#define SCTP_REMOTE_UDP_ENCAPS_PORT 0x00000024
#define SCTP_ENABLE_STREAM_RESET 0x00000900 /* struct sctp_assoc_value */
/* Pluggable Stream Scheduling Socket option */
#define SCTP_PLUGGABLE_SS 0x00001203
#define SCTP_SS_VALUE 0x00001204
/*
* read-only options
*/
#define SCTP_STATUS 0x00000100
#define SCTP_GET_PEER_ADDR_INFO 0x00000101
/* authentication support */
#define SCTP_PEER_AUTH_CHUNKS 0x00000102
#define SCTP_LOCAL_AUTH_CHUNKS 0x00000103
#define SCTP_GET_ASSOC_NUMBER 0x00000104
#define SCTP_GET_ASSOC_ID_LIST 0x00000105
#define SCTP_TIMEOUTS 0x00000106
#define SCTP_PR_STREAM_STATUS 0x00000107
#define SCTP_PR_ASSOC_STATUS 0x00000108
/*
* write-only options
*/
#define SCTP_SET_PEER_PRIMARY_ADDR 0x00000006
#define SCTP_AUTH_CHUNK 0x00000012
#define SCTP_AUTH_KEY 0x00000013
#define SCTP_AUTH_DEACTIVATE_KEY 0x0000001d
#define SCTP_AUTH_DELETE_KEY 0x00000016
#define SCTP_RESET_STREAMS 0x00000901 /* struct sctp_reset_streams */
#define SCTP_RESET_ASSOC 0x00000902 /* sctp_assoc_t */
#define SCTP_ADD_STREAMS 0x00000903 /* struct sctp_add_streams */
struct sctp_initmsg {
uint16_t sinit_num_ostreams;
uint16_t sinit_max_instreams;
uint16_t sinit_max_attempts;
uint16_t sinit_max_init_timeo;
};
struct sctp_rtoinfo {
sctp_assoc_t srto_assoc_id;
uint32_t srto_initial;
uint32_t srto_max;
uint32_t srto_min;
};
struct sctp_assocparams {
sctp_assoc_t sasoc_assoc_id;
uint32_t sasoc_peer_rwnd;
uint32_t sasoc_local_rwnd;
uint32_t sasoc_cookie_life;
uint16_t sasoc_asocmaxrxt;
uint16_t sasoc_number_peer_destinations;
};
struct sctp_setprim {
struct sockaddr_storage ssp_addr;
sctp_assoc_t ssp_assoc_id;
uint8_t ssp_padding[4];
};
struct sctp_setadaptation {
uint32_t ssb_adaptation_ind;
};
struct sctp_paddrparams {
struct sockaddr_storage spp_address;
sctp_assoc_t spp_assoc_id;
uint32_t spp_hbinterval;
uint32_t spp_pathmtu;
uint32_t spp_flags;
uint32_t spp_ipv6_flowlabel;
uint16_t spp_pathmaxrxt;
uint8_t spp_dscp;
};
#define SPP_HB_ENABLE 0x00000001
#define SPP_HB_DISABLE 0x00000002
#define SPP_HB_DEMAND 0x00000004
#define SPP_PMTUD_ENABLE 0x00000008
#define SPP_PMTUD_DISABLE 0x00000010
#define SPP_HB_TIME_IS_ZERO 0x00000080
#define SPP_IPV6_FLOWLABEL 0x00000100
#define SPP_DSCP 0x00000200
/* Used for SCTP_MAXSEG, SCTP_MAX_BURST, SCTP_ENABLE_STREAM_RESET, and SCTP_CONTEXT */
struct sctp_assoc_value {
sctp_assoc_t assoc_id;
uint32_t assoc_value;
};
/* To enable stream reset */
#define SCTP_ENABLE_RESET_STREAM_REQ 0x00000001
#define SCTP_ENABLE_RESET_ASSOC_REQ 0x00000002
#define SCTP_ENABLE_CHANGE_ASSOC_REQ 0x00000004
#define SCTP_ENABLE_VALUE_MASK 0x00000007
struct sctp_reset_streams {
sctp_assoc_t srs_assoc_id;
uint16_t srs_flags;
uint16_t srs_number_streams; /* 0 == ALL */
uint16_t srs_stream_list[]; /* list if strrst_num_streams is not 0 */
};
struct sctp_add_streams {
sctp_assoc_t sas_assoc_id;
uint16_t sas_instrms;
uint16_t sas_outstrms;
};
struct sctp_hmacalgo {
uint32_t shmac_number_of_idents;
uint16_t shmac_idents[];
};
/* AUTH hmac_id */
#define SCTP_AUTH_HMAC_ID_RSVD 0x0000
#define SCTP_AUTH_HMAC_ID_SHA1 0x0001 /* default, mandatory */
#define SCTP_AUTH_HMAC_ID_SHA256 0x0003
#define SCTP_AUTH_HMAC_ID_SHA224 0x0004
#define SCTP_AUTH_HMAC_ID_SHA384 0x0005
#define SCTP_AUTH_HMAC_ID_SHA512 0x0006
struct sctp_sack_info {
sctp_assoc_t sack_assoc_id;
uint32_t sack_delay;
uint32_t sack_freq;
};
struct sctp_default_prinfo {
uint16_t pr_policy;
uint32_t pr_value;
sctp_assoc_t pr_assoc_id;
};
struct sctp_paddrinfo {
struct sockaddr_storage spinfo_address;
sctp_assoc_t spinfo_assoc_id;
int32_t spinfo_state;
uint32_t spinfo_cwnd;
uint32_t spinfo_srtt;
uint32_t spinfo_rto;
uint32_t spinfo_mtu;
};
struct sctp_status {
sctp_assoc_t sstat_assoc_id;
int32_t sstat_state;
uint32_t sstat_rwnd;
uint16_t sstat_unackdata;
uint16_t sstat_penddata;
uint16_t sstat_instrms;
uint16_t sstat_outstrms;
uint32_t sstat_fragmentation_point;
struct sctp_paddrinfo sstat_primary;
};
/*
* user state values
*/
#define SCTP_CLOSED 0x0000
#define SCTP_BOUND 0x1000
#define SCTP_LISTEN 0x2000
#define SCTP_COOKIE_WAIT 0x0002
#define SCTP_COOKIE_ECHOED 0x0004
#define SCTP_ESTABLISHED 0x0008
#define SCTP_SHUTDOWN_SENT 0x0010
#define SCTP_SHUTDOWN_RECEIVED 0x0020
#define SCTP_SHUTDOWN_ACK_SENT 0x0040
#define SCTP_SHUTDOWN_PENDING 0x0080
#define SCTP_ACTIVE 0x0001 /* SCTP_ADDR_REACHABLE */
#define SCTP_INACTIVE 0x0002 /* neither SCTP_ADDR_REACHABLE
nor SCTP_ADDR_UNCONFIRMED */
#define SCTP_UNCONFIRMED 0x0200 /* SCTP_ADDR_UNCONFIRMED */
struct sctp_authchunks {
sctp_assoc_t gauth_assoc_id;
/* uint32_t gauth_number_of_chunks; not available */
uint8_t gauth_chunks[];
};
struct sctp_assoc_ids {
uint32_t gaids_number_of_ids;
sctp_assoc_t gaids_assoc_id[];
};
struct sctp_setpeerprim {
struct sockaddr_storage sspp_addr;
sctp_assoc_t sspp_assoc_id;
uint8_t sspp_padding[4];
};
struct sctp_authchunk {
uint8_t sauth_chunk;
};
struct sctp_get_nonce_values {
sctp_assoc_t gn_assoc_id;
uint32_t gn_peers_tag;
uint32_t gn_local_tag;
};
/*
* Main SCTP chunk types
*/
/************0x00 series ***********/
#define SCTP_DATA 0x00
#define SCTP_INITIATION 0x01
#define SCTP_INITIATION_ACK 0x02
#define SCTP_SELECTIVE_ACK 0x03
#define SCTP_HEARTBEAT_REQUEST 0x04
#define SCTP_HEARTBEAT_ACK 0x05
#define SCTP_ABORT_ASSOCIATION 0x06
#define SCTP_SHUTDOWN 0x07
#define SCTP_SHUTDOWN_ACK 0x08
#define SCTP_OPERATION_ERROR 0x09
#define SCTP_COOKIE_ECHO 0x0a
#define SCTP_COOKIE_ACK 0x0b
#define SCTP_ECN_ECHO 0x0c
#define SCTP_ECN_CWR 0x0d
#define SCTP_SHUTDOWN_COMPLETE 0x0e
/* RFC4895 */
#define SCTP_AUTHENTICATION 0x0f
/* EY nr_sack chunk id*/
#define SCTP_NR_SELECTIVE_ACK 0x10
/************0x40 series ***********/
/************0x80 series ***********/
/* RFC5061 */
#define SCTP_ASCONF_ACK 0x80
/* draft-ietf-stewart-pktdrpsctp */
#define SCTP_PACKET_DROPPED 0x81
/* draft-ietf-stewart-strreset-xxx */
#define SCTP_STREAM_RESET 0x82
/* RFC4820 */
#define SCTP_PAD_CHUNK 0x84
/************0xc0 series ***********/
/* RFC3758 */
#define SCTP_FORWARD_CUM_TSN 0xc0
/* RFC5061 */
#define SCTP_ASCONF 0xc1
struct sctp_authkey {
sctp_assoc_t sca_assoc_id;
uint16_t sca_keynumber;
uint16_t sca_keylength;
uint8_t sca_key[];
};
struct sctp_authkeyid {
sctp_assoc_t scact_assoc_id;
uint16_t scact_keynumber;
};
struct sctp_cc_option {
int option;
struct sctp_assoc_value aid_value;
};
struct sctp_stream_value {
sctp_assoc_t assoc_id;
uint16_t stream_id;
uint16_t stream_value;
};
struct sctp_timeouts {
sctp_assoc_t stimo_assoc_id;
uint32_t stimo_init;
uint32_t stimo_data;
uint32_t stimo_sack;
uint32_t stimo_shutdown;
uint32_t stimo_heartbeat;
uint32_t stimo_cookie;
uint32_t stimo_shutdownack;
};
struct sctp_prstatus {
sctp_assoc_t sprstat_assoc_id;
uint16_t sprstat_sid;
uint16_t sprstat_policy;
uint64_t sprstat_abandoned_unsent;
uint64_t sprstat_abandoned_sent;
};
/* Standard TCP Congestion Control */
#define SCTP_CC_RFC2581 0x00000000
/* High Speed TCP Congestion Control (Floyd) */
#define SCTP_CC_HSTCP 0x00000001
/* HTCP Congestion Control */
#define SCTP_CC_HTCP 0x00000002
/* RTCC Congestion Control - RFC2581 plus */
#define SCTP_CC_RTCC 0x00000003
#define SCTP_CC_OPT_RTCC_SETMODE 0x00002000
#define SCTP_CC_OPT_USE_DCCC_EC 0x00002001
#define SCTP_CC_OPT_STEADY_STEP 0x00002002
#define SCTP_CMT_OFF 0
#define SCTP_CMT_BASE 1
#define SCTP_CMT_RPV1 2
#define SCTP_CMT_RPV2 3
#define SCTP_CMT_MPTCP 4
#define SCTP_CMT_MAX SCTP_CMT_MPTCP
/* RS - Supported stream scheduling modules for pluggable
* stream scheduling
*/
/* Default simple round-robin */
#define SCTP_SS_DEFAULT 0x00000000
/* Real round-robin */
#define SCTP_SS_ROUND_ROBIN 0x00000001
/* Real round-robin per packet */
#define SCTP_SS_ROUND_ROBIN_PACKET 0x00000002
/* Priority */
#define SCTP_SS_PRIORITY 0x00000003
/* Fair Bandwidth */
#define SCTP_SS_FAIR_BANDWITH 0x00000004
/* First-come, first-serve */
#define SCTP_SS_FIRST_COME 0x00000005
/******************** System calls *************/
struct socket;
void
usrsctp_init(uint16_t,
int (*)(void *addr, void *buffer, size_t length, uint8_t tos, uint8_t set_df),
void (*)(const char *format, ...));
struct socket *
usrsctp_socket(int domain, int type, int protocol,
int (*receive_cb)(struct socket *sock, union sctp_sockstore addr, void *data,
size_t datalen, struct sctp_rcvinfo, int flags, void *ulp_info),
int (*send_cb)(struct socket *sock, uint32_t sb_free),
uint32_t sb_threshold,
void *ulp_info);
int
usrsctp_setsockopt(struct socket *so,
int level,
int option_name,
const void *option_value,
socklen_t option_len);
int
usrsctp_getsockopt(struct socket *so,
int level,
int option_name,
void *option_value,
socklen_t *option_len);
int
usrsctp_getpaddrs(struct socket *so,
sctp_assoc_t id,
struct sockaddr **raddrs);
void
usrsctp_freepaddrs(struct sockaddr *addrs);
int
usrsctp_getladdrs(struct socket *so,
sctp_assoc_t id,
struct sockaddr **raddrs);
void
usrsctp_freeladdrs(struct sockaddr *addrs);
ssize_t
usrsctp_sendv(struct socket *so,
const void *data,
size_t len,
struct sockaddr *to,
int addrcnt,
void *info,
socklen_t infolen,
unsigned int infotype,
int flags);
ssize_t
usrsctp_recvv(struct socket *so,
void *dbuf,
size_t len,
struct sockaddr *from,
socklen_t * fromlen,
void *info,
socklen_t *infolen,
unsigned int *infotype,
int *msg_flags);
int
usrsctp_bind(struct socket *so,
struct sockaddr *name,
socklen_t namelen);
#define SCTP_BINDX_ADD_ADDR 0x00008001
#define SCTP_BINDX_REM_ADDR 0x00008002
int
usrsctp_bindx(struct socket *so,
struct sockaddr *addrs,
int addrcnt,
int flags);
int
usrsctp_listen(struct socket *so,
int backlog);
struct socket *
usrsctp_accept(struct socket *so,
struct sockaddr * aname,
socklen_t * anamelen);
struct socket *
usrsctp_peeloff(struct socket *, sctp_assoc_t);
int
usrsctp_connect(struct socket *so,
struct sockaddr *name,
socklen_t namelen);
int
usrsctp_connectx(struct socket *so,
const struct sockaddr *addrs, int addrcnt,
sctp_assoc_t *id);
void
usrsctp_close(struct socket *so);
sctp_assoc_t
usrsctp_getassocid(struct socket *, struct sockaddr *);
int
usrsctp_finish(void);
int
usrsctp_shutdown(struct socket *so, int how);
void
usrsctp_conninput(void *, const void *, size_t, uint8_t);
int
usrsctp_set_non_blocking(struct socket *, int);
int
usrsctp_get_non_blocking(struct socket *);