1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /* SCTP kernel reference Implementation
3 * (C) Copyright IBM Corp. 2001, 2004
4 * Copyright (c) 1999-2000 Cisco, Inc.
5 * Copyright (c) 1999-2001 Motorola, Inc.
6 * Copyright (c) 2001 Intel Corp.
7 * Copyright (c) 2001 Nokia, Inc.
8 * Copyright (c) 2001 La Monte H.P. Yarroll
10 * This file is part of the SCTP kernel reference Implementation
12 * Various protocol defined structures.
14 * Please send any bug reports or fixes you make to the
16 * lksctp developers <linux-sctp@vger.kernel.org>
18 * Or submit a bug report through the following website:
19 * http://www.sf.net/projects/lksctp
21 * Written or modified by:
22 * La Monte H.P. Yarroll <piggy@acm.org>
23 * Karl Knutson <karl@athena.chicago.il.us>
24 * Jon Grimm <jgrimm@us.ibm.com>
25 * Xingang Guo <xingang.guo@intel.com>
26 * randall@sctp.chicago.il.us
29 * Sridhar Samudrala <sri@us.ibm.com>
30 * Kevin Gao <kevin.gao@intel.com>
32 * Any bugs reported given to us we will try to fix... any fixes shared will
33 * be incorporated into the next SCTP release.
35 #ifndef __LINUX_SCTP_H__
36 #define __LINUX_SCTP_H__
38 #include <linux/in.h> /* We need in_addr. */
39 #include <linux/in6.h> /* We need in6_addr. */
40 #include <linux/skbuff.h>
42 #include <uapi/linux/sctp.h>
44 /* Section 3.1. SCTP Common Header Format */
52 static inline struct sctphdr *sctp_hdr(const struct sk_buff *skb)
54 return (struct sctphdr *)skb_transport_header(skb);
57 /* Section 3.2. Chunk Field Descriptions. */
58 struct sctp_chunkhdr {
65 /* Section 3.2. Chunk Type Values.
66 * [Chunk Type] identifies the type of information contained in the Chunk
67 * Value field. It takes a value from 0 to 254. The value of 255 is
68 * reserved for future use as an extension field.
73 SCTP_CID_INIT_ACK = 2,
75 SCTP_CID_HEARTBEAT = 4,
76 SCTP_CID_HEARTBEAT_ACK = 5,
78 SCTP_CID_SHUTDOWN = 7,
79 SCTP_CID_SHUTDOWN_ACK = 8,
81 SCTP_CID_COOKIE_ECHO = 10,
82 SCTP_CID_COOKIE_ACK = 11,
83 SCTP_CID_ECN_ECNE = 12,
84 SCTP_CID_ECN_CWR = 13,
85 SCTP_CID_SHUTDOWN_COMPLETE = 14,
87 /* AUTH Extension Section 4.1 */
90 /* sctp ndata 5.1. I-DATA */
91 SCTP_CID_I_DATA = 0x40,
94 SCTP_CID_FWD_TSN = 0xC0,
96 /* Use hex, as defined in ADDIP sec. 3.1 */
97 SCTP_CID_ASCONF = 0xC1,
98 SCTP_CID_I_FWD_TSN = 0xC2,
99 SCTP_CID_ASCONF_ACK = 0x80,
100 SCTP_CID_RECONF = 0x82,
105 * Chunk Types are encoded such that the highest-order two bits specify
106 * the action that must be taken if the processing endpoint does not
107 * recognize the Chunk Type.
110 SCTP_CID_ACTION_DISCARD = 0x00,
111 SCTP_CID_ACTION_DISCARD_ERR = 0x40,
112 SCTP_CID_ACTION_SKIP = 0x80,
113 SCTP_CID_ACTION_SKIP_ERR = 0xc0,
116 enum { SCTP_CID_ACTION_MASK = 0xc0, };
118 /* This flag is used in Chunk Flags for ABORT and SHUTDOWN COMPLETE.
120 * 3.3.7 Abort Association (ABORT) (6):
121 * The T bit is set to 0 if the sender had a TCB that it destroyed.
122 * If the sender did not have a TCB it should set this bit to 1.
124 enum { SCTP_CHUNK_FLAG_T = 0x01 };
130 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
131 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
132 * | Type = 14 |Reserved |T| Length = 4 |
133 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
135 * Chunk Flags: 8 bits
138 * Set to 0 on transmit and ignored on receipt.
141 * The T bit is set to 0 if the sender had a TCB that it destroyed. If
142 * the sender did NOT have a TCB it should set this bit to 1.
144 * Note: Special rules apply to this chunk for verification, please
145 * see Section 8.5.1 for details.
148 #define sctp_test_T_bit(c) ((c)->chunk_hdr->flags & SCTP_CHUNK_FLAG_T)
151 * Section 3.2.1 Optional/Variable-length Parmaeter Format.
154 struct sctp_paramhdr {
161 /* RFC 2960 Section 3.3.5 */
162 SCTP_PARAM_HEARTBEAT_INFO = cpu_to_be16(1),
163 /* RFC 2960 Section 3.3.2.1 */
164 SCTP_PARAM_IPV4_ADDRESS = cpu_to_be16(5),
165 SCTP_PARAM_IPV6_ADDRESS = cpu_to_be16(6),
166 SCTP_PARAM_STATE_COOKIE = cpu_to_be16(7),
167 SCTP_PARAM_UNRECOGNIZED_PARAMETERS = cpu_to_be16(8),
168 SCTP_PARAM_COOKIE_PRESERVATIVE = cpu_to_be16(9),
169 SCTP_PARAM_HOST_NAME_ADDRESS = cpu_to_be16(11),
170 SCTP_PARAM_SUPPORTED_ADDRESS_TYPES = cpu_to_be16(12),
171 SCTP_PARAM_ECN_CAPABLE = cpu_to_be16(0x8000),
173 /* AUTH Extension Section 3 */
174 SCTP_PARAM_RANDOM = cpu_to_be16(0x8002),
175 SCTP_PARAM_CHUNKS = cpu_to_be16(0x8003),
176 SCTP_PARAM_HMAC_ALGO = cpu_to_be16(0x8004),
178 /* Add-IP: Supported Extensions, Section 4.2 */
179 SCTP_PARAM_SUPPORTED_EXT = cpu_to_be16(0x8008),
181 /* PR-SCTP Sec 3.1 */
182 SCTP_PARAM_FWD_TSN_SUPPORT = cpu_to_be16(0xc000),
184 /* Add-IP Extension. Section 3.2 */
185 SCTP_PARAM_ADD_IP = cpu_to_be16(0xc001),
186 SCTP_PARAM_DEL_IP = cpu_to_be16(0xc002),
187 SCTP_PARAM_ERR_CAUSE = cpu_to_be16(0xc003),
188 SCTP_PARAM_SET_PRIMARY = cpu_to_be16(0xc004),
189 SCTP_PARAM_SUCCESS_REPORT = cpu_to_be16(0xc005),
190 SCTP_PARAM_ADAPTATION_LAYER_IND = cpu_to_be16(0xc006),
192 /* RE-CONFIG. Section 4 */
193 SCTP_PARAM_RESET_OUT_REQUEST = cpu_to_be16(0x000d),
194 SCTP_PARAM_RESET_IN_REQUEST = cpu_to_be16(0x000e),
195 SCTP_PARAM_RESET_TSN_REQUEST = cpu_to_be16(0x000f),
196 SCTP_PARAM_RESET_RESPONSE = cpu_to_be16(0x0010),
197 SCTP_PARAM_RESET_ADD_OUT_STREAMS = cpu_to_be16(0x0011),
198 SCTP_PARAM_RESET_ADD_IN_STREAMS = cpu_to_be16(0x0012),
202 /* RFC 2960 Section 3.2.1
203 * The Parameter Types are encoded such that the highest-order two bits
204 * specify the action that must be taken if the processing endpoint does
205 * not recognize the Parameter Type.
209 SCTP_PARAM_ACTION_DISCARD = cpu_to_be16(0x0000),
210 SCTP_PARAM_ACTION_DISCARD_ERR = cpu_to_be16(0x4000),
211 SCTP_PARAM_ACTION_SKIP = cpu_to_be16(0x8000),
212 SCTP_PARAM_ACTION_SKIP_ERR = cpu_to_be16(0xc000),
215 enum { SCTP_PARAM_ACTION_MASK = cpu_to_be16(0xc000), };
217 /* RFC 2960 Section 3.3.1 Payload Data (DATA) (0) */
219 struct sctp_datahdr {
227 struct sctp_data_chunk {
228 struct sctp_chunkhdr chunk_hdr;
229 struct sctp_datahdr data_hdr;
232 struct sctp_idatahdr {
244 struct sctp_idata_chunk {
245 struct sctp_chunkhdr chunk_hdr;
246 struct sctp_idatahdr data_hdr;
249 /* DATA Chuck Specific Flags */
251 SCTP_DATA_MIDDLE_FRAG = 0x00,
252 SCTP_DATA_LAST_FRAG = 0x01,
253 SCTP_DATA_FIRST_FRAG = 0x02,
254 SCTP_DATA_NOT_FRAG = 0x03,
255 SCTP_DATA_UNORDERED = 0x04,
256 SCTP_DATA_SACK_IMM = 0x08,
258 enum { SCTP_DATA_FRAG_MASK = 0x03, };
261 /* RFC 2960 Section 3.3.2 Initiation (INIT) (1)
263 * This chunk is used to initiate a SCTP association between two
266 struct sctp_inithdr {
269 __be16 num_outbound_streams;
270 __be16 num_inbound_streams;
275 struct sctp_init_chunk {
276 struct sctp_chunkhdr chunk_hdr;
277 struct sctp_inithdr init_hdr;
281 /* Section 3.3.2.1. IPv4 Address Parameter (5) */
282 struct sctp_ipv4addr_param {
283 struct sctp_paramhdr param_hdr;
287 /* Section 3.3.2.1. IPv6 Address Parameter (6) */
288 struct sctp_ipv6addr_param {
289 struct sctp_paramhdr param_hdr;
290 struct in6_addr addr;
293 /* Section 3.3.2.1 Cookie Preservative (9) */
294 struct sctp_cookie_preserve_param {
295 struct sctp_paramhdr param_hdr;
296 __be32 lifespan_increment;
299 /* Section 3.3.2.1 Host Name Address (11) */
300 struct sctp_hostname_param {
301 struct sctp_paramhdr param_hdr;
305 /* Section 3.3.2.1 Supported Address Types (12) */
306 struct sctp_supported_addrs_param {
307 struct sctp_paramhdr param_hdr;
311 /* ADDIP Section 3.2.6 Adaptation Layer Indication */
312 struct sctp_adaptation_ind_param {
313 struct sctp_paramhdr param_hdr;
314 __be32 adaptation_ind;
317 /* ADDIP Section 4.2.7 Supported Extensions Parameter */
318 struct sctp_supported_ext_param {
319 struct sctp_paramhdr param_hdr;
323 /* AUTH Section 3.1 Random */
324 struct sctp_random_param {
325 struct sctp_paramhdr param_hdr;
329 /* AUTH Section 3.2 Chunk List */
330 struct sctp_chunks_param {
331 struct sctp_paramhdr param_hdr;
335 /* AUTH Section 3.3 HMAC Algorithm */
336 struct sctp_hmac_algo_param {
337 struct sctp_paramhdr param_hdr;
341 /* RFC 2960. Section 3.3.3 Initiation Acknowledgement (INIT ACK) (2):
342 * The INIT ACK chunk is used to acknowledge the initiation of an SCTP
345 struct sctp_initack_chunk {
346 struct sctp_chunkhdr chunk_hdr;
347 struct sctp_inithdr init_hdr;
350 /* Section 3.3.3.1 State Cookie (7) */
351 struct sctp_cookie_param {
352 struct sctp_paramhdr p;
356 /* Section 3.3.3.1 Unrecognized Parameters (8) */
357 struct sctp_unrecognized_param {
358 struct sctp_paramhdr param_hdr;
359 struct sctp_paramhdr unrecognized;
365 * 3.3.4 Selective Acknowledgement (SACK) (3):
367 * This chunk is sent to the peer endpoint to acknowledge received DATA
368 * chunks and to inform the peer endpoint of gaps in the received
369 * subsequences of DATA chunks as represented by their TSNs.
372 struct sctp_gap_ack_block {
377 union sctp_sack_variable {
378 struct sctp_gap_ack_block gab;
382 struct sctp_sackhdr {
385 __be16 num_gap_ack_blocks;
387 union sctp_sack_variable variable[];
390 struct sctp_sack_chunk {
391 struct sctp_chunkhdr chunk_hdr;
392 struct sctp_sackhdr sack_hdr;
396 /* RFC 2960. Section 3.3.5 Heartbeat Request (HEARTBEAT) (4):
398 * An endpoint should send this chunk to its peer endpoint to probe the
399 * reachability of a particular destination transport address defined in
400 * the present association.
403 struct sctp_heartbeathdr {
404 struct sctp_paramhdr info;
407 struct sctp_heartbeat_chunk {
408 struct sctp_chunkhdr chunk_hdr;
409 struct sctp_heartbeathdr hb_hdr;
413 /* For the abort and shutdown ACK we must carry the init tag in the
414 * common header. Just the common header is all that is needed with a
417 struct sctp_abort_chunk {
418 struct sctp_chunkhdr uh;
422 /* For the graceful shutdown we must carry the tag (in common header)
423 * and the highest consecutive acking value.
425 struct sctp_shutdownhdr {
429 struct sctp_shutdown_chunk {
430 struct sctp_chunkhdr chunk_hdr;
431 struct sctp_shutdownhdr shutdown_hdr;
434 /* RFC 2960. Section 3.3.10 Operation Error (ERROR) (9) */
442 struct sctp_operr_chunk {
443 struct sctp_chunkhdr chunk_hdr;
444 struct sctp_errhdr err_hdr;
447 /* RFC 2960 3.3.10 - Operation Error
449 * Cause Code: 16 bits (unsigned integer)
451 * Defines the type of error conditions being reported.
454 * --------- ----------------
455 * 1 Invalid Stream Identifier
456 * 2 Missing Mandatory Parameter
457 * 3 Stale Cookie Error
459 * 5 Unresolvable Address
460 * 6 Unrecognized Chunk Type
461 * 7 Invalid Mandatory Parameter
462 * 8 Unrecognized Parameters
464 * 10 Cookie Received While Shutting Down
468 SCTP_ERROR_NO_ERROR = cpu_to_be16(0x00),
469 SCTP_ERROR_INV_STRM = cpu_to_be16(0x01),
470 SCTP_ERROR_MISS_PARAM = cpu_to_be16(0x02),
471 SCTP_ERROR_STALE_COOKIE = cpu_to_be16(0x03),
472 SCTP_ERROR_NO_RESOURCE = cpu_to_be16(0x04),
473 SCTP_ERROR_DNS_FAILED = cpu_to_be16(0x05),
474 SCTP_ERROR_UNKNOWN_CHUNK = cpu_to_be16(0x06),
475 SCTP_ERROR_INV_PARAM = cpu_to_be16(0x07),
476 SCTP_ERROR_UNKNOWN_PARAM = cpu_to_be16(0x08),
477 SCTP_ERROR_NO_DATA = cpu_to_be16(0x09),
478 SCTP_ERROR_COOKIE_IN_SHUTDOWN = cpu_to_be16(0x0a),
481 /* SCTP Implementation Guide:
482 * 11 Restart of an association with new addresses
483 * 12 User Initiated Abort
484 * 13 Protocol Violation
485 * 14 Restart of an Association with New Encapsulation Port
488 SCTP_ERROR_RESTART = cpu_to_be16(0x0b),
489 SCTP_ERROR_USER_ABORT = cpu_to_be16(0x0c),
490 SCTP_ERROR_PROTO_VIOLATION = cpu_to_be16(0x0d),
491 SCTP_ERROR_NEW_ENCAP_PORT = cpu_to_be16(0x0e),
493 /* ADDIP Section 3.3 New Error Causes
495 * Four new Error Causes are added to the SCTP Operational Errors,
496 * primarily for use in the ASCONF-ACK chunk.
499 * --------- ----------------
500 * 0x00A0 Request to Delete Last Remaining IP Address.
501 * 0x00A1 Operation Refused Due to Resource Shortage.
502 * 0x00A2 Request to Delete Source IP Address.
503 * 0x00A3 Association Aborted due to illegal ASCONF-ACK
504 * 0x00A4 Request refused - no authorization.
506 SCTP_ERROR_DEL_LAST_IP = cpu_to_be16(0x00A0),
507 SCTP_ERROR_RSRC_LOW = cpu_to_be16(0x00A1),
508 SCTP_ERROR_DEL_SRC_IP = cpu_to_be16(0x00A2),
509 SCTP_ERROR_ASCONF_ACK = cpu_to_be16(0x00A3),
510 SCTP_ERROR_REQ_REFUSED = cpu_to_be16(0x00A4),
512 /* AUTH Section 4. New Error Cause
514 * This section defines a new error cause that will be sent if an AUTH
515 * chunk is received with an unsupported HMAC identifier.
516 * illustrates the new error cause.
518 * Cause Code Error Cause Name
519 * --------------------------------------------------------------
520 * 0x0105 Unsupported HMAC Identifier
522 SCTP_ERROR_UNSUP_HMAC = cpu_to_be16(0x0105)
527 /* RFC 2960. Appendix A. Explicit Congestion Notification.
528 * Explicit Congestion Notification Echo (ECNE) (12)
530 struct sctp_ecnehdr {
534 struct sctp_ecne_chunk {
535 struct sctp_chunkhdr chunk_hdr;
536 struct sctp_ecnehdr ence_hdr;
539 /* RFC 2960. Appendix A. Explicit Congestion Notification.
540 * Congestion Window Reduced (CWR) (13)
547 * 3.2 Forward Cumulative TSN Chunk Definition (FORWARD TSN)
549 * Forward Cumulative TSN chunk has the following format:
552 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
553 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
554 * | Type = 192 | Flags = 0x00 | Length = Variable |
555 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
556 * | New Cumulative TSN |
557 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
558 * | Stream-1 | Stream Sequence-1 |
559 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
562 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
563 * | Stream-N | Stream Sequence-N |
564 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
568 * Set to all zeros on transmit and ignored on receipt.
570 * New Cumulative TSN: 32 bit u_int
572 * This indicates the new cumulative TSN to the data receiver. Upon
573 * the reception of this value, the data receiver MUST consider
574 * any missing TSNs earlier than or equal to this value as received
575 * and stop reporting them as gaps in any subsequent SACKs.
577 * Stream-N: 16 bit u_int
579 * This field holds a stream number that was skipped by this
582 * Stream Sequence-N: 16 bit u_int
583 * This field holds the sequence number associated with the stream
584 * that was skipped. The stream sequence field holds the largest stream
585 * sequence number in this stream being skipped. The receiver of
586 * the FWD-TSN's can use the Stream-N and Stream Sequence-N fields
587 * to enable delivery of any stranded TSN's that remain on the stream
588 * re-ordering queues. This field MUST NOT report TSN's corresponding
589 * to DATA chunk that are marked as unordered. For ordered DATA
590 * chunks this field MUST be filled in.
592 struct sctp_fwdtsn_skip {
597 struct sctp_fwdtsn_hdr {
599 struct sctp_fwdtsn_skip skip[];
602 struct sctp_fwdtsn_chunk {
603 struct sctp_chunkhdr chunk_hdr;
604 struct sctp_fwdtsn_hdr fwdtsn_hdr;
607 struct sctp_ifwdtsn_skip {
614 struct sctp_ifwdtsn_hdr {
616 struct sctp_ifwdtsn_skip skip[];
619 struct sctp_ifwdtsn_chunk {
620 struct sctp_chunkhdr chunk_hdr;
621 struct sctp_ifwdtsn_hdr fwdtsn_hdr;
625 * Section 3.1.1 Address Configuration Change Chunk (ASCONF)
627 * Serial Number: 32 bits (unsigned integer)
628 * This value represents a Serial Number for the ASCONF Chunk. The
629 * valid range of Serial Number is from 0 to 2^32-1.
630 * Serial Numbers wrap back to 0 after reaching 2^32 -1.
632 * Address Parameter: 8 or 20 bytes (depending on type)
633 * The address is an address of the sender of the ASCONF chunk,
634 * the address MUST be considered part of the association by the
635 * peer endpoint. This field may be used by the receiver of the
636 * ASCONF to help in finding the association. This parameter MUST
637 * be present in every ASCONF message i.e. it is a mandatory TLV
640 * ASCONF Parameter: TLV format
641 * Each Address configuration change is represented by a TLV
642 * parameter as defined in Section 3.2. One or more requests may
643 * be present in an ASCONF Chunk.
645 * Section 3.1.2 Address Configuration Acknowledgement Chunk (ASCONF-ACK)
647 * Serial Number: 32 bits (unsigned integer)
648 * This value represents the Serial Number for the received ASCONF
649 * Chunk that is acknowledged by this chunk. This value is copied
650 * from the received ASCONF Chunk.
652 * ASCONF Parameter Response: TLV format
653 * The ASCONF Parameter Response is used in the ASCONF-ACK to
654 * report status of ASCONF processing.
656 struct sctp_addip_param {
657 struct sctp_paramhdr param_hdr;
661 struct sctp_addiphdr {
666 struct sctp_addip_chunk {
667 struct sctp_chunkhdr chunk_hdr;
668 struct sctp_addiphdr addip_hdr;
672 * Section 4.1 Authentication Chunk (AUTH)
674 * This chunk is used to hold the result of the HMAC calculation.
677 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
678 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
679 * | Type = 0x0F | Flags=0 | Length |
680 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
681 * | Shared Key Identifier | HMAC Identifier |
682 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
686 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
688 * Type: 1 byte (unsigned integer)
689 * This value MUST be set to 0x0F for all AUTH-chunks.
691 * Flags: 1 byte (unsigned integer)
692 * Set to zero on transmit and ignored on receipt.
694 * Length: 2 bytes (unsigned integer)
695 * This value holds the length of the HMAC in bytes plus 8.
697 * Shared Key Identifier: 2 bytes (unsigned integer)
698 * This value describes which endpoint pair shared key is used.
700 * HMAC Identifier: 2 bytes (unsigned integer)
701 * This value describes which message digest is being used. Table 2
702 * shows the currently defined values.
704 * The following Table 2 shows the currently defined values for HMAC
707 * +-----------------+--------------------------+
708 * | HMAC Identifier | Message Digest Algorithm |
709 * +-----------------+--------------------------+
711 * | 1 | SHA-1 defined in [8] |
713 * | 3 | SHA-256 defined in [8] |
714 * +-----------------+--------------------------+
717 * HMAC: n bytes (unsigned integer) This hold the result of the HMAC
720 struct sctp_authhdr {
726 struct sctp_auth_chunk {
727 struct sctp_chunkhdr chunk_hdr;
728 struct sctp_authhdr auth_hdr;
732 struct sctp_info *sctpinfo;
733 struct sctp_association *asoc;
736 struct sctp_reconf_chunk {
737 struct sctp_chunkhdr chunk_hdr;
741 struct sctp_strreset_outreq {
742 struct sctp_paramhdr param_hdr;
745 __be32 send_reset_at_tsn;
746 __be16 list_of_streams[];
749 struct sctp_strreset_inreq {
750 struct sctp_paramhdr param_hdr;
752 __be16 list_of_streams[];
755 struct sctp_strreset_tsnreq {
756 struct sctp_paramhdr param_hdr;
760 struct sctp_strreset_addstrm {
761 struct sctp_paramhdr param_hdr;
763 __be16 number_of_streams;
768 SCTP_STRRESET_NOTHING_TO_DO = 0x00,
769 SCTP_STRRESET_PERFORMED = 0x01,
770 SCTP_STRRESET_DENIED = 0x02,
771 SCTP_STRRESET_ERR_WRONG_SSN = 0x03,
772 SCTP_STRRESET_ERR_IN_PROGRESS = 0x04,
773 SCTP_STRRESET_ERR_BAD_SEQNO = 0x05,
774 SCTP_STRRESET_IN_PROGRESS = 0x06,
777 struct sctp_strreset_resp {
778 struct sctp_paramhdr param_hdr;
783 struct sctp_strreset_resptsn {
784 struct sctp_paramhdr param_hdr;
787 __be32 senders_next_tsn;
788 __be32 receivers_next_tsn;
792 SCTP_DSCP_SET_MASK = 0x1,
793 SCTP_DSCP_VAL_MASK = 0xfc,
794 SCTP_FLOWLABEL_SET_MASK = 0x100000,
795 SCTP_FLOWLABEL_VAL_MASK = 0xfffff
799 * draft-tuexen-tsvwg-sctp-udp-encaps-cons-03.html#section-4-4
801 * The error cause indicating an "Restart of an Association with
802 * New Encapsulation Port"
804 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
805 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
806 * | Cause Code = 14 | Cause Length = 8 |
807 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
808 * | Current Encapsulation Port | New Encapsulation Port |
809 * +-------------------------------+-------------------------------+
811 struct sctp_new_encap_port_hdr {
816 #endif /* __LINUX_SCTP_H__ */