1f8829a4aSRandall Stewart /*- 2b1006367SRandall Stewart * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved. 3f8829a4aSRandall Stewart * 4f8829a4aSRandall Stewart * Redistribution and use in source and binary forms, with or without 5f8829a4aSRandall Stewart * modification, are permitted provided that the following conditions are met: 6f8829a4aSRandall Stewart * 7f8829a4aSRandall Stewart * a) Redistributions of source code must retain the above copyright notice, 8f8829a4aSRandall Stewart * this list of conditions and the following disclaimer. 9f8829a4aSRandall Stewart * 10f8829a4aSRandall Stewart * b) Redistributions in binary form must reproduce the above copyright 11f8829a4aSRandall Stewart * notice, this list of conditions and the following disclaimer in 12f8829a4aSRandall Stewart * the documentation and/or other materials provided with the distribution. 13f8829a4aSRandall Stewart * 14f8829a4aSRandall Stewart * c) Neither the name of Cisco Systems, Inc. nor the names of its 15f8829a4aSRandall Stewart * contributors may be used to endorse or promote products derived 16f8829a4aSRandall Stewart * from this software without specific prior written permission. 17f8829a4aSRandall Stewart * 18f8829a4aSRandall Stewart * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19f8829a4aSRandall Stewart * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 20f8829a4aSRandall Stewart * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21f8829a4aSRandall Stewart * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 22f8829a4aSRandall Stewart * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23f8829a4aSRandall Stewart * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24f8829a4aSRandall Stewart * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25f8829a4aSRandall Stewart * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26f8829a4aSRandall Stewart * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27f8829a4aSRandall Stewart * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 28f8829a4aSRandall Stewart * THE POSSIBILITY OF SUCH DAMAGE. 29f8829a4aSRandall Stewart */ 30f8829a4aSRandall Stewart 31f8829a4aSRandall Stewart /* $KAME: sctp_header.h,v 1.14 2005/03/06 16:04:17 itojun Exp $ */ 32f8829a4aSRandall Stewart 33f8829a4aSRandall Stewart #include <sys/cdefs.h> 34f8829a4aSRandall Stewart __FBSDID("$FreeBSD$"); 35f8829a4aSRandall Stewart 36f8829a4aSRandall Stewart #ifndef __sctp_header_h__ 37f8829a4aSRandall Stewart #define __sctp_header_h__ 38f8829a4aSRandall Stewart 39f8829a4aSRandall Stewart 40f8829a4aSRandall Stewart #include <sys/time.h> 41f8829a4aSRandall Stewart #include <netinet/sctp.h> 42f8829a4aSRandall Stewart #include <netinet/sctp_constants.h> 43f8829a4aSRandall Stewart 44f8829a4aSRandall Stewart /* 45f8829a4aSRandall Stewart * Parameter structures 46f8829a4aSRandall Stewart */ 47f8829a4aSRandall Stewart struct sctp_ipv4addr_param { 48f8829a4aSRandall Stewart struct sctp_paramhdr ph;/* type=SCTP_IPV4_PARAM_TYPE, len=8 */ 49f8829a4aSRandall Stewart uint32_t addr; /* IPV4 address */ 50f8829a4aSRandall Stewart }; 51f8829a4aSRandall Stewart 5242551e99SRandall Stewart #define SCTP_V6_ADDR_BYTES 16 5342551e99SRandall Stewart 5442551e99SRandall Stewart 55f8829a4aSRandall Stewart struct sctp_ipv6addr_param { 56f8829a4aSRandall Stewart struct sctp_paramhdr ph;/* type=SCTP_IPV6_PARAM_TYPE, len=20 */ 5742551e99SRandall Stewart uint8_t addr[SCTP_V6_ADDR_BYTES]; /* IPV6 address */ 58f8829a4aSRandall Stewart }; 59f8829a4aSRandall Stewart 60f8829a4aSRandall Stewart /* Cookie Preservative */ 61f8829a4aSRandall Stewart struct sctp_cookie_perserve_param { 62f8829a4aSRandall Stewart struct sctp_paramhdr ph;/* type=SCTP_COOKIE_PRESERVE, len=8 */ 63f8829a4aSRandall Stewart uint32_t time; /* time in ms to extend cookie */ 64f8829a4aSRandall Stewart }; 65f8829a4aSRandall Stewart 6642551e99SRandall Stewart #define SCTP_ARRAY_MIN_LEN 1 67f8829a4aSRandall Stewart /* Host Name Address */ 68f8829a4aSRandall Stewart struct sctp_host_name_param { 69f8829a4aSRandall Stewart struct sctp_paramhdr ph;/* type=SCTP_HOSTNAME_ADDRESS */ 7042551e99SRandall Stewart char name[SCTP_ARRAY_MIN_LEN]; /* host name */ 71f8829a4aSRandall Stewart }; 72f8829a4aSRandall Stewart 73d06c82f1SRandall Stewart /* 74d06c82f1SRandall Stewart * This is the maximum padded size of a s-a-p 75d06c82f1SRandall Stewart * so paramheadr + 3 address types (6 bytes) + 2 byte pad = 12 76d06c82f1SRandall Stewart */ 77d06c82f1SRandall Stewart #define SCTP_MAX_ADDR_PARAMS_SIZE 12 78f8829a4aSRandall Stewart /* supported address type */ 79f8829a4aSRandall Stewart struct sctp_supported_addr_param { 80f8829a4aSRandall Stewart struct sctp_paramhdr ph;/* type=SCTP_SUPPORTED_ADDRTYPE */ 8142551e99SRandall Stewart uint16_t addr_type[SCTP_ARRAY_MIN_LEN]; /* array of supported address 8242551e99SRandall Stewart * types */ 83f8829a4aSRandall Stewart }; 84f8829a4aSRandall Stewart 85f8829a4aSRandall Stewart /* ECN parameter */ 86f8829a4aSRandall Stewart struct sctp_ecn_supported_param { 87f8829a4aSRandall Stewart struct sctp_paramhdr ph;/* type=SCTP_ECN_CAPABLE */ 88f8829a4aSRandall Stewart }; 89f8829a4aSRandall Stewart 90f8829a4aSRandall Stewart 91f8829a4aSRandall Stewart /* heartbeat info parameter */ 92f8829a4aSRandall Stewart struct sctp_heartbeat_info_param { 93f8829a4aSRandall Stewart struct sctp_paramhdr ph; 94f8829a4aSRandall Stewart uint32_t time_value_1; 95f8829a4aSRandall Stewart uint32_t time_value_2; 96f8829a4aSRandall Stewart uint32_t random_value1; 97f8829a4aSRandall Stewart uint32_t random_value2; 98f8829a4aSRandall Stewart uint16_t user_req; 99f8829a4aSRandall Stewart uint8_t addr_family; 100f8829a4aSRandall Stewart uint8_t addr_len; 101f8829a4aSRandall Stewart char address[SCTP_ADDRMAX]; 102f8829a4aSRandall Stewart }; 103f8829a4aSRandall Stewart 104f8829a4aSRandall Stewart 105f8829a4aSRandall Stewart /* draft-ietf-tsvwg-prsctp */ 106f8829a4aSRandall Stewart /* PR-SCTP supported parameter */ 107f8829a4aSRandall Stewart struct sctp_prsctp_supported_param { 108f8829a4aSRandall Stewart struct sctp_paramhdr ph; 109f8829a4aSRandall Stewart }; 110f8829a4aSRandall Stewart 111f8829a4aSRandall Stewart 112f8829a4aSRandall Stewart /* draft-ietf-tsvwg-addip-sctp */ 113f8829a4aSRandall Stewart struct sctp_asconf_paramhdr { /* an ASCONF "parameter" */ 114f8829a4aSRandall Stewart struct sctp_paramhdr ph;/* a SCTP parameter header */ 115f8829a4aSRandall Stewart uint32_t correlation_id;/* correlation id for this param */ 116f8829a4aSRandall Stewart }; 117f8829a4aSRandall Stewart 118f8829a4aSRandall Stewart struct sctp_asconf_addr_param { /* an ASCONF address parameter */ 119f8829a4aSRandall Stewart struct sctp_asconf_paramhdr aph; /* asconf "parameter" */ 120f8829a4aSRandall Stewart struct sctp_ipv6addr_param addrp; /* max storage size */ 121f8829a4aSRandall Stewart }; 122f8829a4aSRandall Stewart 123f8829a4aSRandall Stewart struct sctp_asconf_addrv4_param { /* an ASCONF address (v4) parameter */ 124f8829a4aSRandall Stewart struct sctp_asconf_paramhdr aph; /* asconf "parameter" */ 125f8829a4aSRandall Stewart struct sctp_ipv4addr_param addrp; /* max storage size */ 126f8829a4aSRandall Stewart }; 127f8829a4aSRandall Stewart 128d06c82f1SRandall Stewart #define SCTP_MAX_SUPPORTED_EXT 256 129d06c82f1SRandall Stewart 130f8829a4aSRandall Stewart struct sctp_supported_chunk_types_param { 131f8829a4aSRandall Stewart struct sctp_paramhdr ph;/* type = 0x8008 len = x */ 132f8829a4aSRandall Stewart uint8_t chunk_types[0]; 133f8829a4aSRandall Stewart }; 134f8829a4aSRandall Stewart 135f8829a4aSRandall Stewart 136f8829a4aSRandall Stewart /* ECN Nonce: draft-ladha-sctp-ecn-nonce */ 137f8829a4aSRandall Stewart struct sctp_ecn_nonce_supported_param { 138f8829a4aSRandall Stewart struct sctp_paramhdr ph;/* type = 0x8001 len = 4 */ 139f8829a4aSRandall Stewart }; 140f8829a4aSRandall Stewart 141f8829a4aSRandall Stewart 142f8829a4aSRandall Stewart /* 143f8829a4aSRandall Stewart * Structures for DATA chunks 144f8829a4aSRandall Stewart */ 145f8829a4aSRandall Stewart struct sctp_data { 146f8829a4aSRandall Stewart uint32_t tsn; 147f8829a4aSRandall Stewart uint16_t stream_id; 148f8829a4aSRandall Stewart uint16_t stream_sequence; 149f8829a4aSRandall Stewart uint32_t protocol_id; 150f8829a4aSRandall Stewart /* user data follows */ 151f8829a4aSRandall Stewart }; 152f8829a4aSRandall Stewart 153f8829a4aSRandall Stewart struct sctp_data_chunk { 154f8829a4aSRandall Stewart struct sctp_chunkhdr ch; 155f8829a4aSRandall Stewart struct sctp_data dp; 156f8829a4aSRandall Stewart }; 157f8829a4aSRandall Stewart 158f8829a4aSRandall Stewart /* 159f8829a4aSRandall Stewart * Structures for the control chunks 160f8829a4aSRandall Stewart */ 161f8829a4aSRandall Stewart 162f8829a4aSRandall Stewart /* Initiate (INIT)/Initiate Ack (INIT ACK) */ 163f8829a4aSRandall Stewart struct sctp_init { 164f8829a4aSRandall Stewart uint32_t initiate_tag; /* initiate tag */ 165f8829a4aSRandall Stewart uint32_t a_rwnd; /* a_rwnd */ 166f8829a4aSRandall Stewart uint16_t num_outbound_streams; /* OS */ 167f8829a4aSRandall Stewart uint16_t num_inbound_streams; /* MIS */ 168f8829a4aSRandall Stewart uint32_t initial_tsn; /* I-TSN */ 169f8829a4aSRandall Stewart /* optional param's follow */ 170f8829a4aSRandall Stewart }; 171f8829a4aSRandall Stewart 17242551e99SRandall Stewart #define SCTP_IDENTIFICATION_SIZE 16 17342551e99SRandall Stewart #define SCTP_ADDRESS_SIZE 4 174f8829a4aSRandall Stewart /* state cookie header */ 175f8829a4aSRandall Stewart struct sctp_state_cookie { /* this is our definition... */ 17642551e99SRandall Stewart uint8_t identification[SCTP_IDENTIFICATION_SIZE]; /* id of who we are */ 177f8829a4aSRandall Stewart uint32_t cookie_life; /* life I will award this cookie */ 178f8829a4aSRandall Stewart uint32_t tie_tag_my_vtag; /* my tag in old association */ 179f8829a4aSRandall Stewart uint32_t tie_tag_peer_vtag; /* peers tag in old association */ 180f8829a4aSRandall Stewart uint32_t peers_vtag; /* peers tag in INIT (for quick ref) */ 181f8829a4aSRandall Stewart uint32_t my_vtag; /* my tag in INIT-ACK (for quick ref) */ 182f8829a4aSRandall Stewart struct timeval time_entered; /* the time I built cookie */ 18342551e99SRandall Stewart uint32_t address[SCTP_ADDRESS_SIZE]; /* 4 ints/128 bits */ 184f8829a4aSRandall Stewart uint32_t addr_type; /* address type */ 18542551e99SRandall Stewart uint32_t laddress[SCTP_ADDRESS_SIZE]; /* my local from address */ 186f8829a4aSRandall Stewart uint32_t laddr_type; /* my local from address type */ 187f8829a4aSRandall Stewart uint32_t scope_id; /* v6 scope id for link-locals */ 188f8829a4aSRandall Stewart uint16_t peerport; /* port address of the peer in the INIT */ 189f8829a4aSRandall Stewart uint16_t myport; /* my port address used in the INIT */ 190f8829a4aSRandall Stewart uint8_t ipv4_addr_legal;/* Are V4 addr legal? */ 191f8829a4aSRandall Stewart uint8_t ipv6_addr_legal;/* Are V6 addr legal? */ 192f8829a4aSRandall Stewart uint8_t local_scope; /* IPv6 local scope flag */ 193f8829a4aSRandall Stewart uint8_t site_scope; /* IPv6 site scope flag */ 194f8829a4aSRandall Stewart uint8_t ipv4_scope; /* IPv4 private addr scope */ 195f8829a4aSRandall Stewart uint8_t loopback_scope; /* loopback scope information */ 196f8829a4aSRandall Stewart uint16_t reserved; 197f8829a4aSRandall Stewart /* 198f8829a4aSRandall Stewart * at the end is tacked on the INIT chunk and the INIT-ACK chunk 199f8829a4aSRandall Stewart * (minus the cookie). 200f8829a4aSRandall Stewart */ 201f8829a4aSRandall Stewart }; 202f8829a4aSRandall Stewart 203f8829a4aSRandall Stewart struct sctp_inv_mandatory_param { 204f8829a4aSRandall Stewart uint16_t cause; 205f8829a4aSRandall Stewart uint16_t length; 206f8829a4aSRandall Stewart uint32_t num_param; 207f8829a4aSRandall Stewart uint16_t param; 208f8829a4aSRandall Stewart /* 209f8829a4aSRandall Stewart * We include this to 0 it since only a missing cookie will cause 210f8829a4aSRandall Stewart * this error. 211f8829a4aSRandall Stewart */ 212f8829a4aSRandall Stewart uint16_t resv; 213f8829a4aSRandall Stewart }; 214f8829a4aSRandall Stewart 215f8829a4aSRandall Stewart struct sctp_unresolv_addr { 216f8829a4aSRandall Stewart uint16_t cause; 217f8829a4aSRandall Stewart uint16_t length; 218f8829a4aSRandall Stewart uint16_t addr_type; 219f8829a4aSRandall Stewart uint16_t reserved; /* Only one invalid addr type */ 220f8829a4aSRandall Stewart }; 221f8829a4aSRandall Stewart 222f8829a4aSRandall Stewart /* state cookie parameter */ 223f8829a4aSRandall Stewart struct sctp_state_cookie_param { 224f8829a4aSRandall Stewart struct sctp_paramhdr ph; 225f8829a4aSRandall Stewart struct sctp_state_cookie cookie; 226f8829a4aSRandall Stewart }; 227f8829a4aSRandall Stewart 228f8829a4aSRandall Stewart struct sctp_init_chunk { 229f8829a4aSRandall Stewart struct sctp_chunkhdr ch; 230f8829a4aSRandall Stewart struct sctp_init init; 231f8829a4aSRandall Stewart }; 232f8829a4aSRandall Stewart 233f8829a4aSRandall Stewart struct sctp_init_msg { 234f8829a4aSRandall Stewart struct sctphdr sh; 235f8829a4aSRandall Stewart struct sctp_init_chunk msg; 236f8829a4aSRandall Stewart }; 237f8829a4aSRandall Stewart 238f8829a4aSRandall Stewart /* ... used for both INIT and INIT ACK */ 239f8829a4aSRandall Stewart #define sctp_init_ack sctp_init 240f8829a4aSRandall Stewart #define sctp_init_ack_chunk sctp_init_chunk 241f8829a4aSRandall Stewart #define sctp_init_ack_msg sctp_init_msg 242f8829a4aSRandall Stewart 243f8829a4aSRandall Stewart 244f8829a4aSRandall Stewart /* Selective Ack (SACK) */ 245f8829a4aSRandall Stewart struct sctp_gap_ack_block { 246f8829a4aSRandall Stewart uint16_t start; /* Gap Ack block start */ 247f8829a4aSRandall Stewart uint16_t end; /* Gap Ack block end */ 248f8829a4aSRandall Stewart }; 249f8829a4aSRandall Stewart 250f8829a4aSRandall Stewart struct sctp_sack { 251f8829a4aSRandall Stewart uint32_t cum_tsn_ack; /* cumulative TSN Ack */ 252f8829a4aSRandall Stewart uint32_t a_rwnd; /* updated a_rwnd of sender */ 253f8829a4aSRandall Stewart uint16_t num_gap_ack_blks; /* number of Gap Ack blocks */ 254f8829a4aSRandall Stewart uint16_t num_dup_tsns; /* number of duplicate TSNs */ 255f8829a4aSRandall Stewart /* struct sctp_gap_ack_block's follow */ 256f8829a4aSRandall Stewart /* uint32_t duplicate_tsn's follow */ 257f8829a4aSRandall Stewart }; 258f8829a4aSRandall Stewart 259f8829a4aSRandall Stewart struct sctp_sack_chunk { 260f8829a4aSRandall Stewart struct sctp_chunkhdr ch; 261f8829a4aSRandall Stewart struct sctp_sack sack; 262f8829a4aSRandall Stewart }; 263f8829a4aSRandall Stewart 264f8829a4aSRandall Stewart 265f8829a4aSRandall Stewart /* Heartbeat Request (HEARTBEAT) */ 266f8829a4aSRandall Stewart struct sctp_heartbeat { 267f8829a4aSRandall Stewart struct sctp_heartbeat_info_param hb_info; 268f8829a4aSRandall Stewart }; 269f8829a4aSRandall Stewart 270f8829a4aSRandall Stewart struct sctp_heartbeat_chunk { 271f8829a4aSRandall Stewart struct sctp_chunkhdr ch; 272f8829a4aSRandall Stewart struct sctp_heartbeat heartbeat; 273f8829a4aSRandall Stewart }; 274f8829a4aSRandall Stewart 275f8829a4aSRandall Stewart /* ... used for Heartbeat Ack (HEARTBEAT ACK) */ 276f8829a4aSRandall Stewart #define sctp_heartbeat_ack sctp_heartbeat 277f8829a4aSRandall Stewart #define sctp_heartbeat_ack_chunk sctp_heartbeat_chunk 278f8829a4aSRandall Stewart 279f8829a4aSRandall Stewart 280f8829a4aSRandall Stewart /* Abort Asssociation (ABORT) */ 281f8829a4aSRandall Stewart struct sctp_abort_chunk { 282f8829a4aSRandall Stewart struct sctp_chunkhdr ch; 283f8829a4aSRandall Stewart /* optional error cause may follow */ 284f8829a4aSRandall Stewart }; 285f8829a4aSRandall Stewart 286f8829a4aSRandall Stewart struct sctp_abort_msg { 287f8829a4aSRandall Stewart struct sctphdr sh; 288f8829a4aSRandall Stewart struct sctp_abort_chunk msg; 289f8829a4aSRandall Stewart }; 290f8829a4aSRandall Stewart 291f8829a4aSRandall Stewart 292f8829a4aSRandall Stewart /* Shutdown Association (SHUTDOWN) */ 293f8829a4aSRandall Stewart struct sctp_shutdown_chunk { 294f8829a4aSRandall Stewart struct sctp_chunkhdr ch; 295f8829a4aSRandall Stewart uint32_t cumulative_tsn_ack; 296f8829a4aSRandall Stewart }; 297f8829a4aSRandall Stewart 298f8829a4aSRandall Stewart 299f8829a4aSRandall Stewart /* Shutdown Acknowledgment (SHUTDOWN ACK) */ 300f8829a4aSRandall Stewart struct sctp_shutdown_ack_chunk { 301f8829a4aSRandall Stewart struct sctp_chunkhdr ch; 302f8829a4aSRandall Stewart }; 303f8829a4aSRandall Stewart 304f8829a4aSRandall Stewart 305f8829a4aSRandall Stewart /* Operation Error (ERROR) */ 306f8829a4aSRandall Stewart struct sctp_error_chunk { 307f8829a4aSRandall Stewart struct sctp_chunkhdr ch; 308f8829a4aSRandall Stewart /* optional error causes follow */ 309f8829a4aSRandall Stewart }; 310f8829a4aSRandall Stewart 311f8829a4aSRandall Stewart 312f8829a4aSRandall Stewart /* Cookie Echo (COOKIE ECHO) */ 313f8829a4aSRandall Stewart struct sctp_cookie_echo_chunk { 314f8829a4aSRandall Stewart struct sctp_chunkhdr ch; 315f8829a4aSRandall Stewart struct sctp_state_cookie cookie; 316f8829a4aSRandall Stewart }; 317f8829a4aSRandall Stewart 318f8829a4aSRandall Stewart /* Cookie Acknowledgment (COOKIE ACK) */ 319f8829a4aSRandall Stewart struct sctp_cookie_ack_chunk { 320f8829a4aSRandall Stewart struct sctp_chunkhdr ch; 321f8829a4aSRandall Stewart }; 322f8829a4aSRandall Stewart 323f8829a4aSRandall Stewart /* Explicit Congestion Notification Echo (ECNE) */ 324f8829a4aSRandall Stewart struct sctp_ecne_chunk { 325f8829a4aSRandall Stewart struct sctp_chunkhdr ch; 326f8829a4aSRandall Stewart uint32_t tsn; 327f8829a4aSRandall Stewart }; 328f8829a4aSRandall Stewart 329f8829a4aSRandall Stewart /* Congestion Window Reduced (CWR) */ 330f8829a4aSRandall Stewart struct sctp_cwr_chunk { 331f8829a4aSRandall Stewart struct sctp_chunkhdr ch; 332f8829a4aSRandall Stewart uint32_t tsn; 333f8829a4aSRandall Stewart }; 334f8829a4aSRandall Stewart 335f8829a4aSRandall Stewart /* Shutdown Complete (SHUTDOWN COMPLETE) */ 336f8829a4aSRandall Stewart struct sctp_shutdown_complete_chunk { 337f8829a4aSRandall Stewart struct sctp_chunkhdr ch; 338f8829a4aSRandall Stewart }; 339f8829a4aSRandall Stewart 340f8829a4aSRandall Stewart /* Oper error holding a stale cookie */ 341f8829a4aSRandall Stewart struct sctp_stale_cookie_msg { 342f8829a4aSRandall Stewart struct sctp_paramhdr ph;/* really an error cause */ 343f8829a4aSRandall Stewart uint32_t time_usec; 344f8829a4aSRandall Stewart }; 345f8829a4aSRandall Stewart 346f8829a4aSRandall Stewart struct sctp_adaptation_layer_indication { 347f8829a4aSRandall Stewart struct sctp_paramhdr ph; 348f8829a4aSRandall Stewart uint32_t indication; 349f8829a4aSRandall Stewart }; 350f8829a4aSRandall Stewart 351f8829a4aSRandall Stewart struct sctp_cookie_while_shutting_down { 352f8829a4aSRandall Stewart struct sctphdr sh; 353f8829a4aSRandall Stewart struct sctp_chunkhdr ch; 354f8829a4aSRandall Stewart struct sctp_paramhdr ph;/* really an error cause */ 355f8829a4aSRandall Stewart }; 356f8829a4aSRandall Stewart 357f8829a4aSRandall Stewart struct sctp_shutdown_complete_msg { 358f8829a4aSRandall Stewart struct sctphdr sh; 359f8829a4aSRandall Stewart struct sctp_shutdown_complete_chunk shut_cmp; 360f8829a4aSRandall Stewart }; 361f8829a4aSRandall Stewart 362f8829a4aSRandall Stewart /* 363f8829a4aSRandall Stewart * draft-ietf-tsvwg-addip-sctp 364f8829a4aSRandall Stewart */ 365f8829a4aSRandall Stewart /* Address/Stream Configuration Change (ASCONF) */ 366f8829a4aSRandall Stewart struct sctp_asconf_chunk { 367f8829a4aSRandall Stewart struct sctp_chunkhdr ch; 368f8829a4aSRandall Stewart uint32_t serial_number; 369f8829a4aSRandall Stewart /* lookup address parameter (mandatory) */ 370f8829a4aSRandall Stewart /* asconf parameters follow */ 371f8829a4aSRandall Stewart }; 372f8829a4aSRandall Stewart 373f8829a4aSRandall Stewart /* Address/Stream Configuration Acknowledge (ASCONF ACK) */ 374f8829a4aSRandall Stewart struct sctp_asconf_ack_chunk { 375f8829a4aSRandall Stewart struct sctp_chunkhdr ch; 376f8829a4aSRandall Stewart uint32_t serial_number; 377f8829a4aSRandall Stewart /* asconf parameters follow */ 378f8829a4aSRandall Stewart }; 379f8829a4aSRandall Stewart 380f8829a4aSRandall Stewart /* draft-ietf-tsvwg-prsctp */ 381f8829a4aSRandall Stewart /* Forward Cumulative TSN (FORWARD TSN) */ 382f8829a4aSRandall Stewart struct sctp_forward_tsn_chunk { 383f8829a4aSRandall Stewart struct sctp_chunkhdr ch; 384f8829a4aSRandall Stewart uint32_t new_cumulative_tsn; 385f8829a4aSRandall Stewart /* stream/sequence pairs (sctp_strseq) follow */ 386f8829a4aSRandall Stewart }; 387f8829a4aSRandall Stewart 388f8829a4aSRandall Stewart struct sctp_strseq { 389f8829a4aSRandall Stewart uint16_t stream; 390f8829a4aSRandall Stewart uint16_t sequence; 391f8829a4aSRandall Stewart }; 392f8829a4aSRandall Stewart 393f8829a4aSRandall Stewart struct sctp_forward_tsn_msg { 394f8829a4aSRandall Stewart struct sctphdr sh; 395f8829a4aSRandall Stewart struct sctp_forward_tsn_chunk msg; 396f8829a4aSRandall Stewart }; 397f8829a4aSRandall Stewart 398f8829a4aSRandall Stewart /* should be a multiple of 4 - 1 aka 3/7/11 etc. */ 399f8829a4aSRandall Stewart 400f8829a4aSRandall Stewart #define SCTP_NUM_DB_TO_VERIFY 31 401f8829a4aSRandall Stewart 402f8829a4aSRandall Stewart struct sctp_chunk_desc { 403f8829a4aSRandall Stewart uint8_t chunk_type; 404f8829a4aSRandall Stewart uint8_t data_bytes[SCTP_NUM_DB_TO_VERIFY]; 405f8829a4aSRandall Stewart uint32_t tsn_ifany; 406f8829a4aSRandall Stewart }; 407f8829a4aSRandall Stewart 408f8829a4aSRandall Stewart 409f8829a4aSRandall Stewart struct sctp_pktdrop_chunk { 410f8829a4aSRandall Stewart struct sctp_chunkhdr ch; 411f8829a4aSRandall Stewart uint32_t bottle_bw; 412f8829a4aSRandall Stewart uint32_t current_onq; 413f8829a4aSRandall Stewart uint16_t trunc_len; 414f8829a4aSRandall Stewart uint16_t reserved; 415f8829a4aSRandall Stewart uint8_t data[0]; 416f8829a4aSRandall Stewart }; 417f8829a4aSRandall Stewart 418f8829a4aSRandall Stewart /**********STREAM RESET STUFF ******************/ 419f8829a4aSRandall Stewart 420f8829a4aSRandall Stewart struct sctp_stream_reset_out_request { 421f8829a4aSRandall Stewart struct sctp_paramhdr ph; 422f8829a4aSRandall Stewart uint32_t request_seq; /* monotonically increasing seq no */ 423f8829a4aSRandall Stewart uint32_t response_seq; /* if a response, the resp seq no */ 424f8829a4aSRandall Stewart uint32_t send_reset_at_tsn; /* last TSN I assigned outbound */ 425f8829a4aSRandall Stewart uint16_t list_of_streams[0]; /* if not all list of streams */ 426f8829a4aSRandall Stewart }; 427f8829a4aSRandall Stewart 428f8829a4aSRandall Stewart struct sctp_stream_reset_in_request { 429f8829a4aSRandall Stewart struct sctp_paramhdr ph; 430f8829a4aSRandall Stewart uint32_t request_seq; 431f8829a4aSRandall Stewart uint16_t list_of_streams[0]; /* if not all list of streams */ 432f8829a4aSRandall Stewart }; 433f8829a4aSRandall Stewart 434f8829a4aSRandall Stewart 435f8829a4aSRandall Stewart struct sctp_stream_reset_tsn_request { 436f8829a4aSRandall Stewart struct sctp_paramhdr ph; 437f8829a4aSRandall Stewart uint32_t request_seq; 438f8829a4aSRandall Stewart }; 439f8829a4aSRandall Stewart 440f8829a4aSRandall Stewart struct sctp_stream_reset_response { 441f8829a4aSRandall Stewart struct sctp_paramhdr ph; 442f8829a4aSRandall Stewart uint32_t response_seq; /* if a response, the resp seq no */ 443f8829a4aSRandall Stewart uint32_t result; 444f8829a4aSRandall Stewart }; 445f8829a4aSRandall Stewart 446f8829a4aSRandall Stewart struct sctp_stream_reset_response_tsn { 447f8829a4aSRandall Stewart struct sctp_paramhdr ph; 448f8829a4aSRandall Stewart uint32_t response_seq; /* if a response, the resp seq no */ 449f8829a4aSRandall Stewart uint32_t result; 450f8829a4aSRandall Stewart uint32_t senders_next_tsn; 451f8829a4aSRandall Stewart uint32_t receivers_next_tsn; 452f8829a4aSRandall Stewart }; 453f8829a4aSRandall Stewart 454f8829a4aSRandall Stewart 455f8829a4aSRandall Stewart 456f8829a4aSRandall Stewart #define SCTP_STREAM_RESET_NOTHING 0x00000000 /* Nothing for me to do */ 457f8829a4aSRandall Stewart #define SCTP_STREAM_RESET_PERFORMED 0x00000001 /* Did it */ 458f8829a4aSRandall Stewart #define SCTP_STREAM_RESET_DENIED 0x00000002 /* refused to do it */ 459f8829a4aSRandall Stewart #define SCTP_STREAM_RESET_ERROR_STR 0x00000003 /* bad Stream no */ 460f8829a4aSRandall Stewart #define SCTP_STREAM_RESET_TRY_LATER 0x00000004 /* collision, try again */ 461f8829a4aSRandall Stewart #define SCTP_STREAM_RESET_BAD_SEQNO 0x00000005 /* bad str-reset seq no */ 462f8829a4aSRandall Stewart 463f8829a4aSRandall Stewart /* 464f8829a4aSRandall Stewart * convience structures, note that if you are making a request for specific 465f8829a4aSRandall Stewart * streams then the request will need to be an overlay structure. 466f8829a4aSRandall Stewart */ 467f8829a4aSRandall Stewart 468f8829a4aSRandall Stewart struct sctp_stream_reset_out_req { 469f8829a4aSRandall Stewart struct sctp_chunkhdr ch; 470f8829a4aSRandall Stewart struct sctp_stream_reset_out_request sr_req; 471f8829a4aSRandall Stewart }; 472f8829a4aSRandall Stewart 473f8829a4aSRandall Stewart struct sctp_stream_reset_in_req { 474f8829a4aSRandall Stewart struct sctp_chunkhdr ch; 475f8829a4aSRandall Stewart struct sctp_stream_reset_in_request sr_req; 476f8829a4aSRandall Stewart }; 477f8829a4aSRandall Stewart 478f8829a4aSRandall Stewart struct sctp_stream_reset_tsn_req { 479f8829a4aSRandall Stewart struct sctp_chunkhdr ch; 480f8829a4aSRandall Stewart struct sctp_stream_reset_tsn_request sr_req; 481f8829a4aSRandall Stewart }; 482f8829a4aSRandall Stewart 483f8829a4aSRandall Stewart struct sctp_stream_reset_resp { 484f8829a4aSRandall Stewart struct sctp_chunkhdr ch; 485f8829a4aSRandall Stewart struct sctp_stream_reset_response sr_resp; 486f8829a4aSRandall Stewart }; 487f8829a4aSRandall Stewart 488f8829a4aSRandall Stewart /* respone only valid with a TSN request */ 489f8829a4aSRandall Stewart struct sctp_stream_reset_resp_tsn { 490f8829a4aSRandall Stewart struct sctp_chunkhdr ch; 491f8829a4aSRandall Stewart struct sctp_stream_reset_response_tsn sr_resp; 492f8829a4aSRandall Stewart }; 493f8829a4aSRandall Stewart 494f8829a4aSRandall Stewart /****************************************************/ 495f8829a4aSRandall Stewart 496f8829a4aSRandall Stewart /* 497f8829a4aSRandall Stewart * Authenticated chunks support draft-ietf-tsvwg-sctp-auth 498f8829a4aSRandall Stewart */ 499d06c82f1SRandall Stewart 500d06c82f1SRandall Stewart /* Should we make the max be 32? */ 501d06c82f1SRandall Stewart #define SCTP_RANDOM_MAX_SIZE 256 502f8829a4aSRandall Stewart struct sctp_auth_random { 503f8829a4aSRandall Stewart struct sctp_paramhdr ph;/* type = 0x8002 */ 504f8829a4aSRandall Stewart uint8_t random_data[0]; 505f8829a4aSRandall Stewart }; 506f8829a4aSRandall Stewart 507f8829a4aSRandall Stewart struct sctp_auth_chunk_list { 508f8829a4aSRandall Stewart struct sctp_paramhdr ph;/* type = 0x8003 */ 509f8829a4aSRandall Stewart uint8_t chunk_types[0]; 510f8829a4aSRandall Stewart }; 511f8829a4aSRandall Stewart 512f8829a4aSRandall Stewart struct sctp_auth_hmac_algo { 513f8829a4aSRandall Stewart struct sctp_paramhdr ph;/* type = 0x8004 */ 514f8829a4aSRandall Stewart uint16_t hmac_ids[0]; 515f8829a4aSRandall Stewart }; 516f8829a4aSRandall Stewart 517f8829a4aSRandall Stewart struct sctp_auth_chunk { 518f8829a4aSRandall Stewart struct sctp_chunkhdr ch; 519f8829a4aSRandall Stewart uint16_t shared_key_id; 520f8829a4aSRandall Stewart uint16_t hmac_id; 521f8829a4aSRandall Stewart uint8_t hmac[0]; 522f8829a4aSRandall Stewart }; 523f8829a4aSRandall Stewart 524f8829a4aSRandall Stewart struct sctp_auth_invalid_hmac { 525f8829a4aSRandall Stewart struct sctp_paramhdr ph; 526f8829a4aSRandall Stewart uint16_t hmac_id; 527f8829a4aSRandall Stewart uint16_t padding; 528f8829a4aSRandall Stewart }; 529f8829a4aSRandall Stewart 530f8829a4aSRandall Stewart /* 531f8829a4aSRandall Stewart * we pre-reserve enough room for a ECNE or CWR AND a SACK with no missing 532f8829a4aSRandall Stewart * pieces. If ENCE is missing we could have a couple of blocks. This way we 533f8829a4aSRandall Stewart * optimize so we MOST likely can bundle a SACK/ECN with the smallest size 534f8829a4aSRandall Stewart * data chunk I will split into. We could increase throughput slightly by 535f8829a4aSRandall Stewart * taking out these two but the 24-sack/8-CWR i.e. 32 bytes I pre-reserve I 536f8829a4aSRandall Stewart * feel is worth it for now. 537f8829a4aSRandall Stewart */ 538f8829a4aSRandall Stewart #ifndef SCTP_MAX_OVERHEAD 53942551e99SRandall Stewart #ifdef INET6 540f8829a4aSRandall Stewart #define SCTP_MAX_OVERHEAD (sizeof(struct sctp_data_chunk) + \ 541f8829a4aSRandall Stewart sizeof(struct sctphdr) + \ 542f8829a4aSRandall Stewart sizeof(struct sctp_ecne_chunk) + \ 543f8829a4aSRandall Stewart sizeof(struct sctp_sack_chunk) + \ 544f8829a4aSRandall Stewart sizeof(struct ip6_hdr)) 545f8829a4aSRandall Stewart 546f8829a4aSRandall Stewart #define SCTP_MED_OVERHEAD (sizeof(struct sctp_data_chunk) + \ 547f8829a4aSRandall Stewart sizeof(struct sctphdr) + \ 548f8829a4aSRandall Stewart sizeof(struct ip6_hdr)) 549f8829a4aSRandall Stewart 550f8829a4aSRandall Stewart 551f8829a4aSRandall Stewart #define SCTP_MIN_OVERHEAD (sizeof(struct ip6_hdr) + \ 552f8829a4aSRandall Stewart sizeof(struct sctphdr)) 553f8829a4aSRandall Stewart 554f8829a4aSRandall Stewart #else 555f8829a4aSRandall Stewart #define SCTP_MAX_OVERHEAD (sizeof(struct sctp_data_chunk) + \ 556f8829a4aSRandall Stewart sizeof(struct sctphdr) + \ 557f8829a4aSRandall Stewart sizeof(struct sctp_ecne_chunk) + \ 558f8829a4aSRandall Stewart sizeof(struct sctp_sack_chunk) + \ 559f8829a4aSRandall Stewart sizeof(struct ip)) 560f8829a4aSRandall Stewart 561f8829a4aSRandall Stewart #define SCTP_MED_OVERHEAD (sizeof(struct sctp_data_chunk) + \ 562f8829a4aSRandall Stewart sizeof(struct sctphdr) + \ 563f8829a4aSRandall Stewart sizeof(struct ip)) 564f8829a4aSRandall Stewart 565f8829a4aSRandall Stewart 566f8829a4aSRandall Stewart #define SCTP_MIN_OVERHEAD (sizeof(struct ip) + \ 567f8829a4aSRandall Stewart sizeof(struct sctphdr)) 568f8829a4aSRandall Stewart 56942551e99SRandall Stewart #endif /* INET6 */ 570f8829a4aSRandall Stewart #endif /* !SCTP_MAX_OVERHEAD */ 571f8829a4aSRandall Stewart 572f8829a4aSRandall Stewart #define SCTP_MED_V4_OVERHEAD (sizeof(struct sctp_data_chunk) + \ 573f8829a4aSRandall Stewart sizeof(struct sctphdr) + \ 574f8829a4aSRandall Stewart sizeof(struct ip)) 575f8829a4aSRandall Stewart 576f8829a4aSRandall Stewart #define SCTP_MIN_V4_OVERHEAD (sizeof(struct ip) + \ 577f8829a4aSRandall Stewart sizeof(struct sctphdr)) 578f8829a4aSRandall Stewart 579f8829a4aSRandall Stewart #endif /* !__sctp_header_h__ */ 580