The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/netinet/sctp.h

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    1 /*      $KAME: sctp.h,v 1.18 2005/03/06 16:04:16 itojun Exp $   */
    2 /*      $NetBSD: sctp.h,v 1.5 2021/10/24 20:00:12 andvar Exp $ */
    3 
    4 #ifndef _NETINET_SCTP_H_
    5 #define _NETINET_SCTP_H_
    6 
    7 /*
    8  * Copyright (c) 2001, 2002, 2003, 2004 Cisco Systems, Inc.
    9  * All rights reserved.
   10  *
   11  * Redistribution and use in source and binary forms, with or without
   12  * modification, are permitted provided that the following conditions
   13  * are met:
   14  * 1. Redistributions of source code must retain the above copyright
   15  *    notice, this list of conditions and the following disclaimer.
   16  * 2. Redistributions in binary form must reproduce the above copyright
   17  *    notice, this list of conditions and the following disclaimer in the
   18  *    documentation and/or other materials provided with the distribution.
   19  * 3. All advertising materials mentioning features or use of this software
   20  *    must display the following acknowledgement:
   21  *      This product includes software developed by Cisco Systems, Inc.
   22  * 4. Neither the name of the project nor the names of its contributors
   23  *    may be used to endorse or promote products derived from this software
   24  *    without specific prior written permission.
   25  *
   26  * THIS SOFTWARE IS PROVIDED BY CISCO SYSTEMS AND CONTRIBUTORS ``AS IS'' AND
   27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   29  * ARE DISCLAIMED.  IN NO EVENT SHALL CISCO SYSTEMS OR CONTRIBUTORS BE LIABLE
   30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   36  * SUCH DAMAGE.
   37  */
   38 #include <sys/types.h>
   39 
   40 /*
   41  * SCTP protocol - RFC2960.
   42  */
   43 
   44 struct sctphdr {
   45         u_int16_t src_port;             /* source port */
   46         u_int16_t dest_port;            /* destination port */
   47         u_int32_t v_tag;                /* verification tag of packet */
   48         u_int32_t checksum;             /* Adler32 C-Sum */
   49         /* chunks follow... */
   50 } __packed;
   51 
   52 /*
   53  * SCTP Chunks
   54  */
   55 struct sctp_chunkhdr {
   56         u_int8_t  chunk_type;           /* chunk type */
   57         u_int8_t  chunk_flags;          /* chunk flags */
   58         u_int16_t chunk_length;         /* chunk length */
   59         /* optional params follow */
   60 } __packed;
   61 
   62 /*
   63  * SCTP chunk parameters
   64  */
   65 struct sctp_paramhdr {
   66         u_int16_t param_type;           /* parameter type */
   67         u_int16_t param_length;         /* parameter length */
   68 } __packed;
   69 
   70 /*
   71  * user socket options
   72  */
   73 /* read-write options */
   74 #define SCTP_NODELAY                    0x00000001
   75 #define SCTP_MAXSEG                     0x00000002
   76 #define SCTP_ASSOCINFO                  0x00000003
   77 
   78 #define SCTP_INITMSG                    0x00000004
   79 #define SCTP_AUTOCLOSE                  0x00000005
   80 #define SCTP_SET_PEER_PRIMARY_ADDR      0x00000006
   81 #define SCTP_PRIMARY_ADDR               0x00000007
   82 
   83 /* read-only options */
   84 #define SCTP_STATUS                     0x00000008
   85 #define SCTP_PCB_STATUS                 0x00000009
   86 
   87 /* ancillary data/notification interest options */
   88 #define SCTP_EVENTS                     0x0000000a
   89 /* sctp_opt_info params */
   90 #define SCTP_PEER_ADDR_PARAMS           0x0000000b
   91 #define SCTP_GET_PEER_ADDR_INFO         0x0000000c
   92 /* Hidden socket option that gets the addresses */
   93 #define SCTP_GET_PEER_ADDRESSES         0x0000000d
   94 #define SCTP_GET_LOCAL_ADDRESSES        0x0000000e
   95 /*
   96  * Blocking I/O is enabled on any TCP type socket by default.
   97  * For the UDP model if this is turned on then the socket buffer is
   98  * shared for send resources amongst all associations. The default
   99  * for the UDP model is that is SS_NBIO is set. Which means all associations
  100  * have a separate send limit BUT they will NOT ever BLOCK instead
  101  * you will get an error back EAGAIN if you try to send too much. If
  102  * you want the blocking symantics you set this option at the cost
  103  * of sharing one socket send buffer size amongst all associations.
  104  * Peeled off sockets turn this option off and block... but since both TCP and
  105  * peeled off sockets have only one assoc per socket this is fine.
  106  * It probably does NOT make sense to set this  on SS_NBIO on a TCP model OR
  107  * peeled off UDP model, but we do allow you to do so. You just use
  108  * the normal syscall to toggle SS_NBIO the way you want.
  109  */
  110 /* Blocking I/O is controlled by the SS_NBIO flag on the
  111  * socket state so_state field.
  112  */
  113 #define SCTP_GET_SNDBUF_USE             0x0000000f
  114 /* latter added read/write */
  115 #define SCTP_ADAPTION_LAYER             0x00000010
  116 #define SCTP_DISABLE_FRAGMENTS          0x00000011
  117 /* sctp_bindx() flags as socket options */
  118 #define SCTP_BINDX_ADD_ADDR             0x00000012
  119 #define SCTP_BINDX_REM_ADDR             0x00000013
  120 /* return the total count in bytes needed to hold all local addresses bound */
  121 #define SCTP_GET_LOCAL_ADDR_SIZE        0x00000014
  122 /* Without this applied we will give V4 and V6 addresses on a V6 socket */
  123 #define SCTP_I_WANT_MAPPED_V4_ADDR      0x00000015
  124 /* Return the total count in bytes needed to hold the remote address */
  125 #define SCTP_GET_REMOTE_ADDR_SIZE       0x00000016
  126 #define SCTP_GET_PEGS                   0x00000017
  127 #define SCTP_DEFAULT_SEND_PARAM         0x00000018
  128 #define SCTP_SET_DEBUG_LEVEL            0x00000019
  129 #define SCTP_RTOINFO                    0x0000001a
  130 #define SCTP_AUTO_ASCONF                0x0000001b
  131 #define SCTP_MAXBURST                   0x0000001c
  132 #define SCTP_GET_STAT_LOG               0x0000001d
  133 #define SCTP_CONNECT_X                  0x0000001e      /* hidden opt for connectx */
  134 #define SCTP_RESET_STREAMS              0x0000001f
  135 #define SCTP_CONNECT_X_DELAYED          0x00000020      /* hidden opt for connectx_delayed
  136                                                          * part of sctp_sendx()
  137                                                          */
  138 #define SCTP_CONNECT_X_COMPLETE         0x00000021
  139 #define SCTP_GET_ASOC_ID_LIST           0x00000022
  140 
  141 /* Other BSD items */
  142 #define SCTP_GET_NONCE_VALUES           0x00000023
  143 #define SCTP_DELAYED_ACK_TIME           0x00000024
  144 
  145 /* Things for the AUTH draft possibly */
  146 #define SCTP_PEER_PUBLIC_KEY            0x00000100 /* get the peers public key */
  147 #define SCTP_MY_PUBLIC_KEY              0x00000101 /* get/set my endpoints public key */
  148 #define SCTP_SET_AUTH_SECRET            0x00000102 /* get/set my shared secret */
  149 #define SCTP_SET_AUTH_CHUNKS            0x00000103/* specify what chunks you want
  150                                                     * the system may have additional requirments
  151                                                      * as well. I.e. probably ASCONF/ASCONF-ACK no matter
  152                                                      * if you want it or not.
  153                                                      */
  154 /* Debug things that need to be purged */
  155 #define SCTP_SET_INITIAL_DBG_SEQ        0x00001f00
  156 #define SCTP_RESET_PEGS                 0x00002000
  157 #define SCTP_CLR_STAT_LOG               0x00002100
  158 
  159 /*
  160  * user state values
  161  */
  162 #define SCTP_CLOSED                     0x0000
  163 #define SCTP_BOUND                      0x1000
  164 #define SCTP_LISTEN                     0x2000
  165 #define SCTP_COOKIE_WAIT                0x0002
  166 #define SCTP_COOKIE_ECHOED              0x0004
  167 #define SCTP_ESTABLISHED                0x0008
  168 #define SCTP_SHUTDOWN_SENT              0x0010
  169 #define SCTP_SHUTDOWN_RECEIVED          0x0020
  170 #define SCTP_SHUTDOWN_ACK_SENT          0x0040
  171 #define SCTP_SHUTDOWN_PENDING           0x0080
  172 
  173 /*
  174  * SCTP operational error codes (user visible)
  175  */
  176 #define SCTP_ERROR_NO_ERROR             0x0000
  177 #define SCTP_ERROR_INVALID_STREAM       0x0001
  178 #define SCTP_ERROR_MISSING_PARAM        0x0002
  179 #define SCTP_ERROR_STALE_COOKIE         0x0003
  180 #define SCTP_ERROR_OUT_OF_RESOURCES     0x0004
  181 #define SCTP_ERROR_UNRESOLVABLE_ADDR    0x0005
  182 #define SCTP_ERROR_UNRECOG_CHUNK        0x0006
  183 #define SCTP_ERROR_INVALID_PARAM        0x0007
  184 #define SCTP_ERROR_UNRECOG_PARAM        0x0008
  185 #define SCTP_ERROR_NO_USER_DATA         0x0009
  186 #define SCTP_ERROR_COOKIE_IN_SHUTDOWN   0x000a
  187 /* draft-ietf-tsvwg-sctpimpguide */
  188 #define SCTP_ERROR_RESTART_NEWADDRS     0x000b
  189 /* draft-ietf-tsvwg-addip-sctp */
  190 #define SCTP_ERROR_DELETE_LAST_ADDR     0x0100
  191 #define SCTP_ERROR_RESOURCE_SHORTAGE    0x0101
  192 #define SCTP_ERROR_DELETE_SOURCE_ADDR   0x0102
  193 #define SCTP_ERROR_ILLEGAL_ASCONF_ACK   0x0103
  194 
  195 /*
  196  * error cause parameters (user visible)
  197  */
  198 struct sctp_error_cause {
  199         u_int16_t code;
  200         u_int16_t length;
  201         /* optional cause-specific info may follow */
  202 } __packed;
  203 
  204 struct sctp_error_invalid_stream {
  205         struct sctp_error_cause cause;  /* code=SCTP_ERROR_INVALID_STREAM */
  206         u_int16_t stream_id;            /* stream id of the DATA in error */
  207         u_int16_t reserved;
  208 } __packed;
  209 
  210 struct sctp_error_missing_param {
  211         struct sctp_error_cause cause;  /* code=SCTP_ERROR_MISSING_PARAM */
  212         u_int32_t num_missing_params;   /* number of missing parameters */
  213         /* u_int16_t param_type's follow */
  214 } __packed;
  215 
  216 struct sctp_error_stale_cookie {
  217         struct sctp_error_cause cause;  /* code=SCTP_ERROR_STALE_COOKIE */
  218         u_int32_t stale_time;           /* time in usec of staleness */
  219 } __packed;
  220 
  221 struct sctp_error_out_of_resource {
  222         struct sctp_error_cause cause;  /* code=SCTP_ERROR_OUT_OF_RESOURCES */
  223 } __packed;
  224 
  225 struct sctp_error_unresolv_addr {
  226         struct sctp_error_cause cause;  /* code=SCTP_ERROR_UNRESOLVABLE_ADDR */
  227 
  228 } __packed;
  229 
  230 struct sctp_error_unrecognized_chunk {
  231         struct sctp_error_cause cause;  /* code=SCTP_ERROR_UNRECOG_CHUNK */
  232         struct sctp_chunkhdr ch;        /* header from chunk in error */
  233 } __packed;
  234 
  235 #define HAVE_SCTP                       1
  236 #define HAVE_KERNEL_SCTP                1
  237 #define HAVE_SCTP_PRSCTP                1
  238 #define HAVE_SCTP_ADDIP                 1
  239 #define HAVE_SCTP_CANSET_PRIMARY        1
  240 #define HAVE_SCTP_SAT_NETWORK_CAPABILITY1
  241 #define HAVE_SCTP_MULTIBUF              1
  242 #define HAVE_SCTP_NOCONNECT             0
  243 #define HAVE_SCTP_ECN_NONCE             1  /* ECN Nonce option */
  244 
  245 /* Main SCTP chunk types, we place
  246  * these here since that way natd and f/w's
  247  * in user land can find them.
  248  */
  249 #define SCTP_DATA               0x00
  250 #define SCTP_INITIATION         0x01
  251 #define SCTP_INITIATION_ACK     0x02
  252 #define SCTP_SELECTIVE_ACK      0x03
  253 #define SCTP_HEARTBEAT_REQUEST  0x04
  254 #define SCTP_HEARTBEAT_ACK      0x05
  255 #define SCTP_ABORT_ASSOCIATION  0x06
  256 #define SCTP_SHUTDOWN           0x07
  257 #define SCTP_SHUTDOWN_ACK       0x08
  258 #define SCTP_OPERATION_ERROR    0x09
  259 #define SCTP_COOKIE_ECHO        0x0a
  260 #define SCTP_COOKIE_ACK         0x0b
  261 #define SCTP_ECN_ECHO           0x0c
  262 #define SCTP_ECN_CWR            0x0d
  263 #define SCTP_SHUTDOWN_COMPLETE  0x0e
  264 
  265 /* draft-ietf-tsvwg-addip-sctp */
  266 #define SCTP_ASCONF             0xc1
  267 #define SCTP_ASCONF_ACK         0x80
  268 
  269 /* draft-ietf-stewart-prsctp */
  270 #define SCTP_FORWARD_CUM_TSN    0xc0
  271 
  272 /* draft-ietf-stewart-pktdrpsctp */
  273 #define SCTP_PACKET_DROPPED     0x81
  274 
  275 /* draft-ietf-stewart-strreset-xxx */
  276 #define SCTP_STREAM_RESET       0x82
  277 
  278 /* ABORT and SHUTDOWN COMPLETE FLAG */
  279 #define SCTP_HAD_NO_TCB         0x01
  280 
  281 /* Packet dropped flags */
  282 #define SCTP_FROM_MIDDLE_BOX    SCTP_HAD_NO_TCB
  283 #define SCTP_BADCRC             0x02
  284 #define SCTP_PACKET_TRUNCATED   0x04
  285 
  286 #define SCTP_SAT_NETWORK_MIN         400        /* min ms for RTT to set satellite time */
  287 #define SCTP_SAT_NETWORK_BURST_INCR  2          /* how many times to multiply maxburst in sat */
  288 /* Data Chuck Specific Flags */
  289 #define SCTP_DATA_FRAG_MASK     0x03
  290 #define SCTP_DATA_MIDDLE_FRAG   0x00
  291 #define SCTP_DATA_LAST_FRAG     0x01
  292 #define SCTP_DATA_FIRST_FRAG    0x02
  293 #define SCTP_DATA_NOT_FRAG      0x03
  294 #define SCTP_DATA_UNORDERED     0x04
  295 
  296 /* ECN Nonce: SACK Chunk Specific Flags */
  297 #define SCTP_SACK_NONCE_SUM     0x01
  298 
  299 #include <netinet/sctp_uio.h>
  300 
  301 #endif /* !_NETINET_SCTP_H_ */

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