xref: /freebsd/sys/netinet/sctp_header.h (revision b1006367704bb48f19bf9ae63fef539028cff085)
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