1 /* SCTP kernel implementation
2 * (C) Copyright IBM Corp. 2001, 2004
3 * Copyright (c) 1999-2000 Cisco, Inc.
4 * Copyright (c) 1999-2001 Motorola, Inc.
5 * Copyright (c) 2002 Intel Corp.
7 * This file is part of the SCTP kernel implementation
9 * This header represents the structures and constants needed to support
10 * the SCTP Extension to the Sockets API.
12 * This SCTP implementation is free software;
13 * you can redistribute it and/or modify it under the terms of
14 * the GNU General Public License as published by
15 * the Free Software Foundation; either version 2, or (at your option)
18 * This SCTP implementation is distributed in the hope that it
19 * will be useful, but WITHOUT ANY WARRANTY; without even the implied
20 * ************************
21 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
22 * See the GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with GNU CC; see the file COPYING. If not, see
26 * <http://www.gnu.org/licenses/>.
28 * Please send any bug reports or fixes you make to the
32 * Or submit a bug report through the following website:
33 * http://www.sf.net/projects/lksctp
35 * Written or modified by:
49 * Any bugs reported given to us we will try to fix... any fixes shared will
50 * be incorporated into the next SCTP release.
56 #include <linux/types.h>
57 #include <linux/socket.h>
59 typedef __s32 sctp_assoc_t;
61 /* The following symbols come from the Sockets API Extensions for
62 * SCTP <draft-ietf-tsvwg-sctpsocket-07.txt>.
64 #define SCTP_RTOINFO 0
65 #define SCTP_ASSOCINFO 1
66 #define SCTP_INITMSG 2
67 #define SCTP_NODELAY 3 /* Get/set nodelay option. */
68 #define SCTP_AUTOCLOSE 4
69 #define SCTP_SET_PEER_PRIMARY_ADDR 5
70 #define SCTP_PRIMARY_ADDR 6
71 #define SCTP_ADAPTATION_LAYER 7
72 #define SCTP_DISABLE_FRAGMENTS 8
73 #define SCTP_PEER_ADDR_PARAMS 9
74 #define SCTP_DEFAULT_SEND_PARAM 10
75 #define SCTP_EVENTS 11
76 #define SCTP_I_WANT_MAPPED_V4_ADDR 12 /* Turn on/off mapped v4 addresses */
77 #define SCTP_MAXSEG 13 /* Get/set maximum fragment. */
78 #define SCTP_STATUS 14
79 #define SCTP_GET_PEER_ADDR_INFO 15
80 #define SCTP_DELAYED_ACK_TIME 16
81 #define SCTP_DELAYED_ACK SCTP_DELAYED_ACK_TIME
82 #define SCTP_DELAYED_SACK SCTP_DELAYED_ACK_TIME
83 #define SCTP_CONTEXT 17
84 #define SCTP_FRAGMENT_INTERLEAVE 18
85 #define SCTP_PARTIAL_DELIVERY_POINT 19 /* Set/Get partial delivery point */
86 #define SCTP_MAX_BURST 20 /* Set/Get max burst */
87 #define SCTP_AUTH_CHUNK 21 /* Set only: add a chunk type to authenticate */
88 #define SCTP_HMAC_IDENT 22
89 #define SCTP_AUTH_KEY 23
90 #define SCTP_AUTH_ACTIVE_KEY 24
91 #define SCTP_AUTH_DELETE_KEY 25
92 #define SCTP_PEER_AUTH_CHUNKS 26 /* Read only */
93 #define SCTP_LOCAL_AUTH_CHUNKS 27 /* Read only */
94 #define SCTP_GET_ASSOC_NUMBER 28 /* Read only */
95 #define SCTP_GET_ASSOC_ID_LIST 29 /* Read only */
96 #define SCTP_AUTO_ASCONF 30
97 #define SCTP_PEER_ADDR_THLDS 31
98 #define SCTP_RECVRCVINFO 32
99 #define SCTP_RECVNXTINFO 33
100 #define SCTP_DEFAULT_SNDINFO 34
102 /* Internal Socket Options. Some of the sctp library functions are
103 * implemented using these socket options.
105 #define SCTP_SOCKOPT_BINDX_ADD 100 /* BINDX requests for adding addrs */
106 #define SCTP_SOCKOPT_BINDX_REM 101 /* BINDX requests for removing addrs. */
107 #define SCTP_SOCKOPT_PEELOFF 102 /* peel off association. */
108 /* Options 104-106 are deprecated and removed. Do not use this space */
109 #define SCTP_SOCKOPT_CONNECTX_OLD 107 /* CONNECTX old requests. */
110 #define SCTP_GET_PEER_ADDRS 108 /* Get all peer address. */
111 #define SCTP_GET_LOCAL_ADDRS 109 /* Get all local address. */
112 #define SCTP_SOCKOPT_CONNECTX 110 /* CONNECTX requests. */
113 #define SCTP_SOCKOPT_CONNECTX3 111 /* CONNECTX requests (updated) */
114 #define SCTP_GET_ASSOC_STATS 112 /* Read only */
116 /* These are bit fields for msghdr->msg_flags. See section 5.1. */
117 /* On user space Linux, these live in <bits/socket.h> as an enum. */
118 enum sctp_msg_flags {
119 MSG_NOTIFICATION = 0x8000,
120 #define MSG_NOTIFICATION MSG_NOTIFICATION
123 /* 5.3.1 SCTP Initiation Structure (SCTP_INIT)
125 * This cmsghdr structure provides information for initializing new
126 * SCTP associations with sendmsg(). The SCTP_INITMSG socket option
127 * uses this same data structure. This structure is not used for
130 * cmsg_level cmsg_type cmsg_data[]
131 * ------------ ------------ ----------------------
132 * IPPROTO_SCTP SCTP_INIT struct sctp_initmsg
134 struct sctp_initmsg {
135 __u16 sinit_num_ostreams;
136 __u16 sinit_max_instreams;
137 __u16 sinit_max_attempts;
138 __u16 sinit_max_init_timeo;
141 /* 5.3.2 SCTP Header Information Structure (SCTP_SNDRCV)
143 * This cmsghdr structure specifies SCTP options for sendmsg() and
144 * describes SCTP header information about a received message through
147 * cmsg_level cmsg_type cmsg_data[]
148 * ------------ ------------ ----------------------
149 * IPPROTO_SCTP SCTP_SNDRCV struct sctp_sndrcvinfo
151 struct sctp_sndrcvinfo {
157 __u32 sinfo_timetolive;
160 sctp_assoc_t sinfo_assoc_id;
163 /* 5.3.4 SCTP Send Information Structure (SCTP_SNDINFO)
165 * This cmsghdr structure specifies SCTP options for sendmsg().
167 * cmsg_level cmsg_type cmsg_data[]
168 * ------------ ------------ -------------------
169 * IPPROTO_SCTP SCTP_SNDINFO struct sctp_sndinfo
171 struct sctp_sndinfo {
176 sctp_assoc_t snd_assoc_id;
179 /* 5.3.5 SCTP Receive Information Structure (SCTP_RCVINFO)
181 * This cmsghdr structure describes SCTP receive information
182 * about a received message through recvmsg().
184 * cmsg_level cmsg_type cmsg_data[]
185 * ------------ ------------ -------------------
186 * IPPROTO_SCTP SCTP_RCVINFO struct sctp_rcvinfo
188 struct sctp_rcvinfo {
196 sctp_assoc_t rcv_assoc_id;
199 /* 5.3.6 SCTP Next Receive Information Structure (SCTP_NXTINFO)
201 * This cmsghdr structure describes SCTP receive information
202 * of the next message that will be delivered through recvmsg()
203 * if this information is already available when delivering
204 * the current message.
206 * cmsg_level cmsg_type cmsg_data[]
207 * ------------ ------------ -------------------
208 * IPPROTO_SCTP SCTP_NXTINFO struct sctp_nxtinfo
210 struct sctp_nxtinfo {
215 sctp_assoc_t nxt_assoc_id;
219 * sinfo_flags: 16 bits (unsigned integer)
221 * This field may contain any of the following flags and is composed of
222 * a bitwise OR of these values.
224 enum sctp_sinfo_flags {
225 SCTP_UNORDERED = (1 << 0), /* Send/receive message unordered. */
226 SCTP_ADDR_OVER = (1 << 1), /* Override the primary destination. */
227 SCTP_ABORT = (1 << 2), /* Send an ABORT message to the peer. */
228 SCTP_SACK_IMMEDIATELY = (1 << 3), /* SACK should be sent without delay. */
229 SCTP_NOTIFICATION = MSG_NOTIFICATION, /* Next message is not user msg but notification. */
230 SCTP_EOF = MSG_FIN, /* Initiate graceful shutdown process. */
235 struct sctp_initmsg init;
236 struct sctp_sndrcvinfo sndrcv;
239 /* These are cmsg_types. */
240 typedef enum sctp_cmsg_type {
241 SCTP_INIT, /* 5.2.1 SCTP Initiation Structure */
242 #define SCTP_INIT SCTP_INIT
243 SCTP_SNDRCV, /* 5.2.2 SCTP Header Information Structure */
244 #define SCTP_SNDRCV SCTP_SNDRCV
245 SCTP_SNDINFO, /* 5.3.4 SCTP Send Information Structure */
246 #define SCTP_SNDINFO SCTP_SNDINFO
247 SCTP_RCVINFO, /* 5.3.5 SCTP Receive Information Structure */
248 #define SCTP_RCVINFO SCTP_RCVINFO
249 SCTP_NXTINFO, /* 5.3.6 SCTP Next Receive Information Structure */
250 #define SCTP_NXTINFO SCTP_NXTINFO
254 * 5.3.1.1 SCTP_ASSOC_CHANGE
256 * Communication notifications inform the ULP that an SCTP association
257 * has either begun or ended. The identifier for a new association is
258 * provided by this notificaion. The notification information has the
262 struct sctp_assoc_change {
268 __u16 sac_outbound_streams;
269 __u16 sac_inbound_streams;
270 sctp_assoc_t sac_assoc_id;
275 * sac_state: 32 bits (signed integer)
277 * This field holds one of a number of values that communicate the
278 * event that happened to the association. They include:
280 * Note: The following state names deviate from the API draft as
281 * the names clash too easily with other kernel symbols.
283 enum sctp_sac_state {
292 * 5.3.1.2 SCTP_PEER_ADDR_CHANGE
294 * When a destination address on a multi-homed peer encounters a change
295 * an interface details event is sent. The information has the
296 * following structure:
298 struct sctp_paddr_change {
302 struct sockaddr_storage spc_aaddr;
305 sctp_assoc_t spc_assoc_id;
306 } __attribute__((packed, aligned(4)));
309 * spc_state: 32 bits (signed integer)
311 * This field holds one of a number of values that communicate the
312 * event that happened to the address. They include:
314 enum sctp_spc_state {
316 SCTP_ADDR_UNREACHABLE,
325 * 5.3.1.3 SCTP_REMOTE_ERROR
327 * A remote peer may send an Operational Error message to its peer.
328 * This message indicates a variety of error conditions on an
329 * association. The entire error TLV as it appears on the wire is
330 * included in a SCTP_REMOTE_ERROR event. Please refer to the SCTP
331 * specification [SCTP] and any extensions for a list of possible
332 * error formats. SCTP error TLVs have the format:
334 struct sctp_remote_error {
339 sctp_assoc_t sre_assoc_id;
345 * 5.3.1.4 SCTP_SEND_FAILED
347 * If SCTP cannot deliver a message it may return the message as a
350 struct sctp_send_failed {
355 struct sctp_sndrcvinfo ssf_info;
356 sctp_assoc_t ssf_assoc_id;
361 * ssf_flags: 16 bits (unsigned integer)
363 * The flag value will take one of the following values
365 * SCTP_DATA_UNSENT - Indicates that the data was never put on
368 * SCTP_DATA_SENT - Indicates that the data was put on the wire.
369 * Note that this does not necessarily mean that the
370 * data was (or was not) successfully delivered.
372 enum sctp_ssf_flags {
378 * 5.3.1.5 SCTP_SHUTDOWN_EVENT
380 * When a peer sends a SHUTDOWN, SCTP delivers this notification to
381 * inform the application that it should cease sending data.
383 struct sctp_shutdown_event {
387 sctp_assoc_t sse_assoc_id;
391 * 5.3.1.6 SCTP_ADAPTATION_INDICATION
393 * When a peer sends a Adaptation Layer Indication parameter , SCTP
394 * delivers this notification to inform the application
395 * that of the peers requested adaptation layer.
397 struct sctp_adaptation_event {
401 __u32 sai_adaptation_ind;
402 sctp_assoc_t sai_assoc_id;
406 * 5.3.1.7 SCTP_PARTIAL_DELIVERY_EVENT
408 * When a receiver is engaged in a partial delivery of a
409 * message this notification will be used to indicate
412 struct sctp_pdapi_event {
416 __u32 pdapi_indication;
417 sctp_assoc_t pdapi_assoc_id;
420 enum { SCTP_PARTIAL_DELIVERY_ABORTED=0, };
423 * 5.3.1.8. SCTP_AUTHENTICATION_EVENT
425 * When a receiver is using authentication this message will provide
426 * notifications regarding new keys being made active as well as errors.
428 struct sctp_authkey_event {
432 __u16 auth_keynumber;
433 __u16 auth_altkeynumber;
434 __u32 auth_indication;
435 sctp_assoc_t auth_assoc_id;
438 enum { SCTP_AUTH_NEWKEY = 0, };
441 * 6.1.9. SCTP_SENDER_DRY_EVENT
443 * When the SCTP stack has no more user data to send or retransmit, this
444 * notification is given to the user. Also, at the time when a user app
445 * subscribes to this event, if there is no data to be sent or
446 * retransmit, the stack will immediately send up this notification.
448 struct sctp_sender_dry_event {
449 __u16 sender_dry_type;
450 __u16 sender_dry_flags;
451 __u32 sender_dry_length;
452 sctp_assoc_t sender_dry_assoc_id;
456 * Described in Section 7.3
457 * Ancillary Data and Notification Interest Options
459 struct sctp_event_subscribe {
460 __u8 sctp_data_io_event;
461 __u8 sctp_association_event;
462 __u8 sctp_address_event;
463 __u8 sctp_send_failure_event;
464 __u8 sctp_peer_error_event;
465 __u8 sctp_shutdown_event;
466 __u8 sctp_partial_delivery_event;
467 __u8 sctp_adaptation_layer_event;
468 __u8 sctp_authentication_event;
469 __u8 sctp_sender_dry_event;
473 * 5.3.1 SCTP Notification Structure
475 * The notification structure is defined as the union of all
476 * notification types.
479 union sctp_notification {
481 __u16 sn_type; /* Notification type. */
485 struct sctp_assoc_change sn_assoc_change;
486 struct sctp_paddr_change sn_paddr_change;
487 struct sctp_remote_error sn_remote_error;
488 struct sctp_send_failed sn_send_failed;
489 struct sctp_shutdown_event sn_shutdown_event;
490 struct sctp_adaptation_event sn_adaptation_event;
491 struct sctp_pdapi_event sn_pdapi_event;
492 struct sctp_authkey_event sn_authkey_event;
493 struct sctp_sender_dry_event sn_sender_dry_event;
497 * All standard values for sn_type flags are greater than 2^15.
498 * Values from 2^15 and down are reserved.
502 SCTP_SN_TYPE_BASE = (1<<15),
504 #define SCTP_ASSOC_CHANGE SCTP_ASSOC_CHANGE
505 SCTP_PEER_ADDR_CHANGE,
506 #define SCTP_PEER_ADDR_CHANGE SCTP_PEER_ADDR_CHANGE
508 #define SCTP_SEND_FAILED SCTP_SEND_FAILED
510 #define SCTP_REMOTE_ERROR SCTP_REMOTE_ERROR
512 #define SCTP_SHUTDOWN_EVENT SCTP_SHUTDOWN_EVENT
513 SCTP_PARTIAL_DELIVERY_EVENT,
514 #define SCTP_PARTIAL_DELIVERY_EVENT SCTP_PARTIAL_DELIVERY_EVENT
515 SCTP_ADAPTATION_INDICATION,
516 #define SCTP_ADAPTATION_INDICATION SCTP_ADAPTATION_INDICATION
517 SCTP_AUTHENTICATION_EVENT,
518 #define SCTP_AUTHENTICATION_INDICATION SCTP_AUTHENTICATION_EVENT
519 SCTP_SENDER_DRY_EVENT,
520 #define SCTP_SENDER_DRY_EVENT SCTP_SENDER_DRY_EVENT
523 /* Notification error codes used to fill up the error fields in some
525 * SCTP_PEER_ADDRESS_CHAGE : spc_error
526 * SCTP_ASSOC_CHANGE : sac_error
527 * These names should be potentially included in the draft 04 of the SCTP
528 * sockets API specification.
530 typedef enum sctp_sn_error {
531 SCTP_FAILED_THRESHOLD,
533 SCTP_HEARTBEAT_SUCCESS,
534 SCTP_RESPONSE_TO_USER_REQ,
536 SCTP_SHUTDOWN_GUARD_EXPIRES,
541 * 7.1.1 Retransmission Timeout Parameters (SCTP_RTOINFO)
543 * The protocol parameters used to initialize and bound retransmission
544 * timeout (RTO) are tunable. See [SCTP] for more information on how
545 * these parameters are used in RTO calculation.
547 struct sctp_rtoinfo {
548 sctp_assoc_t srto_assoc_id;
555 * 7.1.2 Association Parameters (SCTP_ASSOCINFO)
557 * This option is used to both examine and set various association and
558 * endpoint parameters.
560 struct sctp_assocparams {
561 sctp_assoc_t sasoc_assoc_id;
562 __u16 sasoc_asocmaxrxt;
563 __u16 sasoc_number_peer_destinations;
564 __u32 sasoc_peer_rwnd;
565 __u32 sasoc_local_rwnd;
566 __u32 sasoc_cookie_life;
570 * 7.1.9 Set Peer Primary Address (SCTP_SET_PEER_PRIMARY_ADDR)
572 * Requests that the peer mark the enclosed address as the association
573 * primary. The enclosed address must be one of the association's
574 * locally bound addresses. The following structure is used to make a
575 * set primary request:
577 struct sctp_setpeerprim {
578 sctp_assoc_t sspp_assoc_id;
579 struct sockaddr_storage sspp_addr;
580 } __attribute__((packed, aligned(4)));
583 * 7.1.10 Set Primary Address (SCTP_PRIMARY_ADDR)
585 * Requests that the local SCTP stack use the enclosed peer address as
586 * the association primary. The enclosed address must be one of the
587 * association peer's addresses. The following structure is used to
588 * make a set peer primary request:
591 sctp_assoc_t ssp_assoc_id;
592 struct sockaddr_storage ssp_addr;
593 } __attribute__((packed, aligned(4)));
595 /* For backward compatibility use, define the old name too */
596 #define sctp_setprim sctp_prim
599 * 7.1.11 Set Adaptation Layer Indicator (SCTP_ADAPTATION_LAYER)
601 * Requests that the local endpoint set the specified Adaptation Layer
602 * Indication parameter for all future INIT and INIT-ACK exchanges.
604 struct sctp_setadaptation {
605 __u32 ssb_adaptation_ind;
609 * 7.1.13 Peer Address Parameters (SCTP_PEER_ADDR_PARAMS)
611 * Applications can enable or disable heartbeats for any peer address
612 * of an association, modify an address's heartbeat interval, force a
613 * heartbeat to be sent immediately, and adjust the address's maximum
614 * number of retransmissions sent before an address is considered
615 * unreachable. The following structure is used to access and modify an
616 * address's parameters:
618 enum sctp_spp_flags {
619 SPP_HB_ENABLE = 1<<0, /*Enable heartbeats*/
620 SPP_HB_DISABLE = 1<<1, /*Disable heartbeats*/
621 SPP_HB = SPP_HB_ENABLE | SPP_HB_DISABLE,
622 SPP_HB_DEMAND = 1<<2, /*Send heartbeat immediately*/
623 SPP_PMTUD_ENABLE = 1<<3, /*Enable PMTU discovery*/
624 SPP_PMTUD_DISABLE = 1<<4, /*Disable PMTU discovery*/
625 SPP_PMTUD = SPP_PMTUD_ENABLE | SPP_PMTUD_DISABLE,
626 SPP_SACKDELAY_ENABLE = 1<<5, /*Enable SACK*/
627 SPP_SACKDELAY_DISABLE = 1<<6, /*Disable SACK*/
628 SPP_SACKDELAY = SPP_SACKDELAY_ENABLE | SPP_SACKDELAY_DISABLE,
629 SPP_HB_TIME_IS_ZERO = 1<<7, /* Set HB delay to 0 */
632 struct sctp_paddrparams {
633 sctp_assoc_t spp_assoc_id;
634 struct sockaddr_storage spp_address;
635 __u32 spp_hbinterval;
636 __u16 spp_pathmaxrxt;
640 } __attribute__((packed, aligned(4)));
643 * 7.1.18. Add a chunk that must be authenticated (SCTP_AUTH_CHUNK)
645 * This set option adds a chunk type that the user is requesting to be
646 * received only in an authenticated way. Changes to the list of chunks
647 * will only effect future associations on the socket.
649 struct sctp_authchunk {
654 * 7.1.19. Get or set the list of supported HMAC Identifiers (SCTP_HMAC_IDENT)
656 * This option gets or sets the list of HMAC algorithms that the local
657 * endpoint requires the peer to use.
660 /* This here is only used by user space as is. It might not be a good idea
661 * to export/reveal the whole structure with reserved fields etc.
664 SCTP_AUTH_HMAC_ID_SHA1 = 1,
665 SCTP_AUTH_HMAC_ID_SHA256 = 3,
669 struct sctp_hmacalgo {
670 __u32 shmac_num_idents;
671 __u16 shmac_idents[];
674 /* Sadly, user and kernel space have different names for
675 * this structure member, so this is to not break anything.
677 #define shmac_number_of_idents shmac_num_idents
680 * 7.1.20. Set a shared key (SCTP_AUTH_KEY)
682 * This option will set a shared secret key which is used to build an
683 * association shared key.
685 struct sctp_authkey {
686 sctp_assoc_t sca_assoc_id;
693 * 7.1.21. Get or set the active shared key (SCTP_AUTH_ACTIVE_KEY)
695 * This option will get or set the active shared key to be used to build
696 * the association shared key.
699 struct sctp_authkeyid {
700 sctp_assoc_t scact_assoc_id;
701 __u16 scact_keynumber;
706 * 7.1.23. Get or set delayed ack timer (SCTP_DELAYED_SACK)
708 * This option will effect the way delayed acks are performed. This
709 * option allows you to get or set the delayed ack time, in
710 * milliseconds. It also allows changing the delayed ack frequency.
711 * Changing the frequency to 1 disables the delayed sack algorithm. If
712 * the assoc_id is 0, then this sets or gets the endpoints default
713 * values. If the assoc_id field is non-zero, then the set or get
714 * effects the specified association for the one to many model (the
715 * assoc_id field is ignored by the one to one model). Note that if
716 * sack_delay or sack_freq are 0 when setting this option, then the
717 * current values will remain unchanged.
719 struct sctp_sack_info {
720 sctp_assoc_t sack_assoc_id;
725 struct sctp_assoc_value {
726 sctp_assoc_t assoc_id;
727 uint32_t assoc_value;
731 * 7.2.2 Peer Address Information
733 * Applications can retrieve information about a specific peer address
734 * of an association, including its reachability state, congestion
735 * window, and retransmission timer values. This information is
736 * read-only. The following structure is used to access this
739 struct sctp_paddrinfo {
740 sctp_assoc_t spinfo_assoc_id;
741 struct sockaddr_storage spinfo_address;
747 } __attribute__((packed, aligned(4)));
749 /* Peer addresses's state. */
750 /* UNKNOWN: Peer address passed by the upper layer in sendmsg or connect[x]
752 * UNCONFIRMED: Peer address received in INIT/INIT-ACK address parameters.
753 * Not yet confirmed by a heartbeat and not available for data
755 * ACTIVE : Peer address confirmed, active and available for data transfers.
756 * INACTIVE: Peer address inactive and not available for data transfers.
758 enum sctp_spinfo_state {
763 SCTP_UNKNOWN = 0xffff /* Value used for transport state unknown */
767 * 7.2.1 Association Status (SCTP_STATUS)
769 * Applications can retrieve current status information about an
770 * association, including association state, peer receiver window size,
771 * number of unacked data chunks, and number of data chunks pending
772 * receipt. This information is read-only. The following structure is
773 * used to access this information:
776 sctp_assoc_t sstat_assoc_id;
779 __u16 sstat_unackdata;
780 __u16 sstat_penddata;
782 __u16 sstat_outstrms;
783 __u32 sstat_fragmentation_point;
784 struct sctp_paddrinfo sstat_primary;
788 * 7.2.3. Get the list of chunks the peer requires to be authenticated
789 * (SCTP_PEER_AUTH_CHUNKS)
791 * This option gets a list of chunks for a specified association that
792 * the peer requires to be received authenticated only.
794 struct sctp_authchunks {
795 sctp_assoc_t gauth_assoc_id;
796 __u32 gauth_number_of_chunks;
797 uint8_t gauth_chunks[];
800 /* The broken spelling has been released already in lksctp-tools header,
801 * so don't break anyone, now that it's fixed.
803 #define guth_number_of_chunks gauth_number_of_chunks
805 /* Association states. */
806 enum sctp_sstat_state {
809 SCTP_COOKIE_WAIT = 2,
810 SCTP_COOKIE_ECHOED = 3,
811 SCTP_ESTABLISHED = 4,
812 SCTP_SHUTDOWN_PENDING = 5,
813 SCTP_SHUTDOWN_SENT = 6,
814 SCTP_SHUTDOWN_RECEIVED = 7,
815 SCTP_SHUTDOWN_ACK_SENT = 8,
819 * 8.2.6. Get the Current Identifiers of Associations
820 * (SCTP_GET_ASSOC_ID_LIST)
822 * This option gets the current list of SCTP association identifiers of
823 * the SCTP associations handled by a one-to-many style socket.
825 struct sctp_assoc_ids {
826 __u32 gaids_number_of_ids;
827 sctp_assoc_t gaids_assoc_id[];
831 * 8.3, 8.5 get all peer/local addresses in an association.
832 * This parameter struct is used by SCTP_GET_PEER_ADDRS and
833 * SCTP_GET_LOCAL_ADDRS socket options used internally to implement
834 * sctp_getpaddrs() and sctp_getladdrs() API.
836 struct sctp_getaddrs_old {
837 sctp_assoc_t assoc_id;
840 struct sockaddr __user *addrs;
842 struct sockaddr *addrs;
846 struct sctp_getaddrs {
847 sctp_assoc_t assoc_id; /*input*/
848 __u32 addr_num; /*output*/
849 __u8 addrs[0]; /*output, variable size*/
852 /* A socket user request obtained via SCTP_GET_ASSOC_STATS that retrieves
853 * association stats. All stats are counts except sas_maxrto and
854 * sas_obs_rto_ipaddr. maxrto is the max observed rto + transport since
855 * the last call. Will return 0 when RTO was not update since last call
857 struct sctp_assoc_stats {
858 sctp_assoc_t sas_assoc_id; /* Input */
859 /* Transport of observed max RTO */
860 struct sockaddr_storage sas_obs_rto_ipaddr;
861 __u64 sas_maxrto; /* Maximum Observed RTO for period */
862 __u64 sas_isacks; /* SACKs received */
863 __u64 sas_osacks; /* SACKs sent */
864 __u64 sas_opackets; /* Packets sent */
865 __u64 sas_ipackets; /* Packets received */
866 __u64 sas_rtxchunks; /* Retransmitted Chunks */
867 __u64 sas_outofseqtsns;/* TSN received > next expected */
868 __u64 sas_idupchunks; /* Dups received (ordered+unordered) */
869 __u64 sas_gapcnt; /* Gap Acknowledgements Received */
870 __u64 sas_ouodchunks; /* Unordered data chunks sent */
871 __u64 sas_iuodchunks; /* Unordered data chunks received */
872 __u64 sas_oodchunks; /* Ordered data chunks sent */
873 __u64 sas_iodchunks; /* Ordered data chunks received */
874 __u64 sas_octrlchunks; /* Control chunks sent */
875 __u64 sas_ictrlchunks; /* Control chunks received */
881 * The flags parameter is formed from the bitwise OR of zero or more of the
882 * following currently defined flags:
884 #define SCTP_BINDX_ADD_ADDR 0x01
885 #define SCTP_BINDX_REM_ADDR 0x02
887 /* This is the structure that is passed as an argument(optval) to
888 * getsockopt(SCTP_SOCKOPT_PEELOFF).
891 sctp_assoc_t associd;
893 } sctp_peeloff_arg_t;
896 * Peer Address Thresholds socket option
898 struct sctp_paddrthlds {
899 sctp_assoc_t spt_assoc_id;
900 struct sockaddr_storage spt_address;
901 __u16 spt_pathmaxrxt;
902 __u16 spt_pathpfthld;
905 #endif /* _UAPI_SCTP_H */