1f8829a4aSRandall Stewart /*- 2830d754dSRandall Stewart * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved. 35d40cf5dSRandall Stewart * Copyright (c) 2008-2011, by Randall Stewart. All rights reserved. 45d40cf5dSRandall Stewart * Copyright (c) 2008-2011, by Michael Tuexen. All rights reserved. 5f8829a4aSRandall Stewart * 6f8829a4aSRandall Stewart * Redistribution and use in source and binary forms, with or without 7f8829a4aSRandall Stewart * modification, are permitted provided that the following conditions are met: 8f8829a4aSRandall Stewart * 9f8829a4aSRandall Stewart * a) Redistributions of source code must retain the above copyright notice, 10f8829a4aSRandall Stewart * this list of conditions and the following disclaimer. 11f8829a4aSRandall Stewart * 12f8829a4aSRandall Stewart * b) Redistributions in binary form must reproduce the above copyright 13f8829a4aSRandall Stewart * notice, this list of conditions and the following disclaimer in 14f8829a4aSRandall Stewart * the documentation and/or other materials provided with the distribution. 15f8829a4aSRandall Stewart * 16f8829a4aSRandall Stewart * c) Neither the name of Cisco Systems, Inc. nor the names of its 17f8829a4aSRandall Stewart * contributors may be used to endorse or promote products derived 18f8829a4aSRandall Stewart * from this software without specific prior written permission. 19f8829a4aSRandall Stewart * 20f8829a4aSRandall Stewart * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21f8829a4aSRandall Stewart * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 22f8829a4aSRandall Stewart * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23f8829a4aSRandall Stewart * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 24f8829a4aSRandall Stewart * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25f8829a4aSRandall Stewart * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26f8829a4aSRandall Stewart * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27f8829a4aSRandall Stewart * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28f8829a4aSRandall Stewart * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29f8829a4aSRandall Stewart * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 30f8829a4aSRandall Stewart * THE POSSIBILITY OF SUCH DAMAGE. 31f8829a4aSRandall Stewart */ 32f8829a4aSRandall Stewart /* $KAME: sctp.h,v 1.18 2005/03/06 16:04:16 itojun Exp $ */ 33f8829a4aSRandall Stewart 34f8829a4aSRandall Stewart #include <sys/cdefs.h> 35f8829a4aSRandall Stewart __FBSDID("$FreeBSD$"); 36f8829a4aSRandall Stewart 37f8829a4aSRandall Stewart #ifndef _NETINET_SCTP_H_ 38f8829a4aSRandall Stewart #define _NETINET_SCTP_H_ 39f8829a4aSRandall Stewart 40f8829a4aSRandall Stewart #include <sys/types.h> 41f8829a4aSRandall Stewart 42b3f1ea41SRandall Stewart 43b3f1ea41SRandall Stewart #define SCTP_PACKED __attribute__((packed)) 44b3f1ea41SRandall Stewart 45f8829a4aSRandall Stewart /* 46f8829a4aSRandall Stewart * SCTP protocol - RFC2960. 47f8829a4aSRandall Stewart */ 48f8829a4aSRandall Stewart struct sctphdr { 49f8829a4aSRandall Stewart uint16_t src_port; /* source port */ 50f8829a4aSRandall Stewart uint16_t dest_port; /* destination port */ 51f8829a4aSRandall Stewart uint32_t v_tag; /* verification tag of packet */ 52f8829a4aSRandall Stewart uint32_t checksum; /* Adler32 C-Sum */ 53f8829a4aSRandall Stewart /* chunks follow... */ 54b3f1ea41SRandall Stewart } SCTP_PACKED; 55f8829a4aSRandall Stewart 56f8829a4aSRandall Stewart /* 57f8829a4aSRandall Stewart * SCTP Chunks 58f8829a4aSRandall Stewart */ 59f8829a4aSRandall Stewart struct sctp_chunkhdr { 60f8829a4aSRandall Stewart uint8_t chunk_type; /* chunk type */ 61f8829a4aSRandall Stewart uint8_t chunk_flags; /* chunk flags */ 62f8829a4aSRandall Stewart uint16_t chunk_length; /* chunk length */ 63f8829a4aSRandall Stewart /* optional params follow */ 64b3f1ea41SRandall Stewart } SCTP_PACKED; 65f8829a4aSRandall Stewart 66f8829a4aSRandall Stewart /* 67f8829a4aSRandall Stewart * SCTP chunk parameters 68f8829a4aSRandall Stewart */ 69f8829a4aSRandall Stewart struct sctp_paramhdr { 70f8829a4aSRandall Stewart uint16_t param_type; /* parameter type */ 71f8829a4aSRandall Stewart uint16_t param_length; /* parameter length */ 72b3f1ea41SRandall Stewart } SCTP_PACKED; 73f8829a4aSRandall Stewart 74f8829a4aSRandall Stewart /* 75f8829a4aSRandall Stewart * user socket options: socket API defined 76f8829a4aSRandall Stewart */ 77f8829a4aSRandall Stewart /* 78f8829a4aSRandall Stewart * read-write options 79f8829a4aSRandall Stewart */ 80f8829a4aSRandall Stewart #define SCTP_RTOINFO 0x00000001 81f8829a4aSRandall Stewart #define SCTP_ASSOCINFO 0x00000002 82f8829a4aSRandall Stewart #define SCTP_INITMSG 0x00000003 83f8829a4aSRandall Stewart #define SCTP_NODELAY 0x00000004 84f8829a4aSRandall Stewart #define SCTP_AUTOCLOSE 0x00000005 85f8829a4aSRandall Stewart #define SCTP_SET_PEER_PRIMARY_ADDR 0x00000006 86f8829a4aSRandall Stewart #define SCTP_PRIMARY_ADDR 0x00000007 87f8829a4aSRandall Stewart #define SCTP_ADAPTATION_LAYER 0x00000008 88f8829a4aSRandall Stewart /* same as above */ 89f8829a4aSRandall Stewart #define SCTP_ADAPTION_LAYER 0x00000008 90f8829a4aSRandall Stewart #define SCTP_DISABLE_FRAGMENTS 0x00000009 91f8829a4aSRandall Stewart #define SCTP_PEER_ADDR_PARAMS 0x0000000a 92f8829a4aSRandall Stewart #define SCTP_DEFAULT_SEND_PARAM 0x0000000b 93f8829a4aSRandall Stewart /* ancillary data/notification interest options */ 94e2e7c62eSMichael Tuexen #define SCTP_EVENTS 0x0000000c /* deprecated */ 95f8829a4aSRandall Stewart /* Without this applied we will give V4 and V6 addresses on a V6 socket */ 96f8829a4aSRandall Stewart #define SCTP_I_WANT_MAPPED_V4_ADDR 0x0000000d 97f8829a4aSRandall Stewart #define SCTP_MAXSEG 0x0000000e 98d61a0ae0SRandall Stewart #define SCTP_DELAYED_SACK 0x0000000f 99f8829a4aSRandall Stewart #define SCTP_FRAGMENT_INTERLEAVE 0x00000010 100f8829a4aSRandall Stewart #define SCTP_PARTIAL_DELIVERY_POINT 0x00000011 101f8829a4aSRandall Stewart /* authentication support */ 102f8829a4aSRandall Stewart #define SCTP_AUTH_CHUNK 0x00000012 103f8829a4aSRandall Stewart #define SCTP_AUTH_KEY 0x00000013 104f8829a4aSRandall Stewart #define SCTP_HMAC_IDENT 0x00000014 105f8829a4aSRandall Stewart #define SCTP_AUTH_ACTIVE_KEY 0x00000015 106f8829a4aSRandall Stewart #define SCTP_AUTH_DELETE_KEY 0x00000016 107f8829a4aSRandall Stewart #define SCTP_USE_EXT_RCVINFO 0x00000017 108f8829a4aSRandall Stewart #define SCTP_AUTO_ASCONF 0x00000018 /* rw */ 109f8829a4aSRandall Stewart #define SCTP_MAXBURST 0x00000019 /* rw */ 110d61a0ae0SRandall Stewart #define SCTP_MAX_BURST 0x00000019 /* rw */ 111f8829a4aSRandall Stewart /* assoc level context */ 112f8829a4aSRandall Stewart #define SCTP_CONTEXT 0x0000001a /* rw */ 113b1ce21c6SRebecca Cran /* explicit EOR signalling */ 114f8829a4aSRandall Stewart #define SCTP_EXPLICIT_EOR 0x0000001b 1156d9e8f2bSRandall Stewart #define SCTP_REUSE_PORT 0x0000001c /* rw */ 116830d754dSRandall Stewart #define SCTP_AUTH_DEACTIVATE_KEY 0x0000001d 117e2e7c62eSMichael Tuexen #define SCTP_EVENT 0x0000001e 118e2e7c62eSMichael Tuexen #define SCTP_RECVRCVINFO 0x0000001f 119e2e7c62eSMichael Tuexen #define SCTP_RECVNXTINFO 0x00000020 120e2e7c62eSMichael Tuexen #define SCTP_DEFAULT_SNDINFO 0x00000021 1216037f89cSMichael Tuexen #define SCTP_DEFAULT_PRINFO 0x00000022 122f8829a4aSRandall Stewart 123f8829a4aSRandall Stewart /* 124f8829a4aSRandall Stewart * read-only options 125f8829a4aSRandall Stewart */ 126f8829a4aSRandall Stewart #define SCTP_STATUS 0x00000100 127f8829a4aSRandall Stewart #define SCTP_GET_PEER_ADDR_INFO 0x00000101 128f8829a4aSRandall Stewart /* authentication support */ 129f8829a4aSRandall Stewart #define SCTP_PEER_AUTH_CHUNKS 0x00000102 130f8829a4aSRandall Stewart #define SCTP_LOCAL_AUTH_CHUNKS 0x00000103 1313c503c28SRandall Stewart #define SCTP_GET_ASSOC_NUMBER 0x00000104 /* ro */ 1323c503c28SRandall Stewart #define SCTP_GET_ASSOC_ID_LIST 0x00000105 /* ro */ 1336a67588bSMichael Tuexen #define SCTP_TIMEOUTS 0x00000106 134f8829a4aSRandall Stewart 135f8829a4aSRandall Stewart /* 136f8829a4aSRandall Stewart * user socket options: BSD implementation specific 137f8829a4aSRandall Stewart */ 138f8829a4aSRandall Stewart /* 139f8829a4aSRandall Stewart * Blocking I/O is enabled on any TCP type socket by default. For the UDP 140f8829a4aSRandall Stewart * model if this is turned on then the socket buffer is shared for send 141f8829a4aSRandall Stewart * resources amongst all associations. The default for the UDP model is that 142b1ce21c6SRebecca Cran * is SS_NBIO is set. Which means all associations have a separate send 143f8829a4aSRandall Stewart * limit BUT they will NOT ever BLOCK instead you will get an error back 144b1ce21c6SRebecca Cran * EAGAIN if you try to send too much. If you want the blocking semantics you 145f8829a4aSRandall Stewart * set this option at the cost of sharing one socket send buffer size amongst 146f8829a4aSRandall Stewart * all associations. Peeled off sockets turn this option off and block. But 147f8829a4aSRandall Stewart * since both TCP and peeled off sockets have only one assoc per socket this 148f8829a4aSRandall Stewart * is fine. It probably does NOT make sense to set this on SS_NBIO on a TCP 149f8829a4aSRandall Stewart * model OR peeled off UDP model, but we do allow you to do so. You just use 150f8829a4aSRandall Stewart * the normal syscall to toggle SS_NBIO the way you want. 151f8829a4aSRandall Stewart * 152b1ce21c6SRebecca Cran * Blocking I/O is controlled by the SS_NBIO flag on the socket state so_state 153f8829a4aSRandall Stewart * field. 154f8829a4aSRandall Stewart */ 155f8829a4aSRandall Stewart 156f8829a4aSRandall Stewart /* these should probably go into sockets API */ 157f8829a4aSRandall Stewart #define SCTP_RESET_STREAMS 0x00001004 /* wo */ 158f8829a4aSRandall Stewart 159f8829a4aSRandall Stewart 160f8829a4aSRandall Stewart /* here on down are more implementation specific */ 161f8829a4aSRandall Stewart #define SCTP_SET_DEBUG_LEVEL 0x00001005 162f8829a4aSRandall Stewart #define SCTP_CLR_STAT_LOG 0x00001007 163f8829a4aSRandall Stewart /* CMT ON/OFF socket option */ 164f8829a4aSRandall Stewart #define SCTP_CMT_ON_OFF 0x00001200 165f8829a4aSRandall Stewart #define SCTP_CMT_USE_DAC 0x00001201 166b54d3a6cSRandall Stewart /* JRS - Pluggable Congestion Control Socket option */ 167b54d3a6cSRandall Stewart #define SCTP_PLUGGABLE_CC 0x00001202 168f7a77f6fSMichael Tuexen /* RS - Pluggable Stream Scheduling Socket option */ 169f7a77f6fSMichael Tuexen #define SCTP_PLUGGABLE_SS 0x00001203 170f7a77f6fSMichael Tuexen #define SCTP_SS_VALUE 0x00001204 171299108c5SRandall Stewart #define SCTP_CC_OPTION 0x00001205 /* Options for CC 172299108c5SRandall Stewart * modules */ 173f8829a4aSRandall Stewart /* read only */ 174f8829a4aSRandall Stewart #define SCTP_GET_SNDBUF_USE 0x00001101 175f8829a4aSRandall Stewart #define SCTP_GET_STAT_LOG 0x00001103 1763c503c28SRandall Stewart #define SCTP_PCB_STATUS 0x00001104 1773c503c28SRandall Stewart #define SCTP_GET_NONCE_VALUES 0x00001105 178f8829a4aSRandall Stewart 179207304d4SRandall Stewart 18042551e99SRandall Stewart /* Special hook for dynamically setting primary for all assoc's, 181b1ce21c6SRebecca Cran * this is a write only option that requires root privilege. 18242551e99SRandall Stewart */ 18342551e99SRandall Stewart #define SCTP_SET_DYNAMIC_PRIMARY 0x00002001 184f8829a4aSRandall Stewart 18542551e99SRandall Stewart /* VRF (virtual router feature) and multi-VRF support 18642551e99SRandall Stewart * options. VRF's provide splits within a router 18742551e99SRandall Stewart * that give the views of multiple routers. A 18842551e99SRandall Stewart * standard host, without VRF support, is just 18942551e99SRandall Stewart * a single VRF. If VRF's are supported then 19042551e99SRandall Stewart * the transport must be VRF aware. This means 19142551e99SRandall Stewart * that every socket call coming in must be directed 19242551e99SRandall Stewart * within the endpoint to one of the VRF's it belongs 19342551e99SRandall Stewart * to. The endpoint, before binding, may select 19442551e99SRandall Stewart * the "default" VRF it is in by using a set socket 19542551e99SRandall Stewart * option with SCTP_VRF_ID. This will also 196b1ce21c6SRebecca Cran * get propagated to the default VRF. Once the 19742551e99SRandall Stewart * endpoint binds an address then it CANNOT add 19842551e99SRandall Stewart * additional VRF's to become a Multi-VRF endpoint. 19942551e99SRandall Stewart * 20042551e99SRandall Stewart * Before BINDING additional VRF's can be added with 20142551e99SRandall Stewart * the SCTP_ADD_VRF_ID call or deleted with 20242551e99SRandall Stewart * SCTP_DEL_VRF_ID. 20342551e99SRandall Stewart * 20442551e99SRandall Stewart * Associations are ALWAYS contained inside a single 20542551e99SRandall Stewart * VRF. They cannot reside in two (or more) VRF's. Incoming 20642551e99SRandall Stewart * packets, assuming the router is VRF aware, can always 20742551e99SRandall Stewart * tell us what VRF they arrived on. A host not supporting 20842551e99SRandall Stewart * any VRF's will find that the packets always arrived on the 20942551e99SRandall Stewart * single VRF that the host has. 21042551e99SRandall Stewart * 21142551e99SRandall Stewart */ 21242551e99SRandall Stewart 21342551e99SRandall Stewart #define SCTP_VRF_ID 0x00003001 21442551e99SRandall Stewart #define SCTP_ADD_VRF_ID 0x00003002 21542551e99SRandall Stewart #define SCTP_GET_VRF_IDS 0x00003003 21642551e99SRandall Stewart #define SCTP_GET_ASOC_VRF 0x00003004 21742551e99SRandall Stewart #define SCTP_DEL_VRF_ID 0x00003005 218207304d4SRandall Stewart 219207304d4SRandall Stewart /* 220207304d4SRandall Stewart * If you enable packet logging you can get 221207304d4SRandall Stewart * a poor mans ethereal output in binary 222207304d4SRandall Stewart * form. Note this is a compile option to 223207304d4SRandall Stewart * the kernel, SCTP_PACKET_LOGGING, and 224207304d4SRandall Stewart * without it in your kernel you 2256b4ae356SRandall Stewart * will get a EOPNOTSUPP 226207304d4SRandall Stewart */ 227207304d4SRandall Stewart #define SCTP_GET_PACKET_LOG 0x00004001 228207304d4SRandall Stewart 229f8829a4aSRandall Stewart /* 230f8829a4aSRandall Stewart * hidden implementation specific options these are NOT user visible (should 231f8829a4aSRandall Stewart * move out of sctp.h) 232f8829a4aSRandall Stewart */ 233f8829a4aSRandall Stewart /* sctp_bindx() flags as hidden socket options */ 234f8829a4aSRandall Stewart #define SCTP_BINDX_ADD_ADDR 0x00008001 235f8829a4aSRandall Stewart #define SCTP_BINDX_REM_ADDR 0x00008002 236f8829a4aSRandall Stewart /* Hidden socket option that gets the addresses */ 237f8829a4aSRandall Stewart #define SCTP_GET_PEER_ADDRESSES 0x00008003 238f8829a4aSRandall Stewart #define SCTP_GET_LOCAL_ADDRESSES 0x00008004 239f8829a4aSRandall Stewart /* return the total count in bytes needed to hold all local addresses bound */ 240f8829a4aSRandall Stewart #define SCTP_GET_LOCAL_ADDR_SIZE 0x00008005 241f8829a4aSRandall Stewart /* Return the total count in bytes needed to hold the remote address */ 242f8829a4aSRandall Stewart #define SCTP_GET_REMOTE_ADDR_SIZE 0x00008006 243f8829a4aSRandall Stewart /* hidden option for connectx */ 244f8829a4aSRandall Stewart #define SCTP_CONNECT_X 0x00008007 245f8829a4aSRandall Stewart /* hidden option for connectx_delayed, part of sendx */ 246f8829a4aSRandall Stewart #define SCTP_CONNECT_X_DELAYED 0x00008008 247f8829a4aSRandall Stewart #define SCTP_CONNECT_X_COMPLETE 0x00008009 248f8829a4aSRandall Stewart /* hidden socket option based sctp_peeloff */ 249f8829a4aSRandall Stewart #define SCTP_PEELOFF 0x0000800a 250f8829a4aSRandall Stewart /* the real worker for sctp_getaddrlen() */ 251f8829a4aSRandall Stewart #define SCTP_GET_ADDR_LEN 0x0000800b 252f8829a4aSRandall Stewart /* temporary workaround for Apple listen() issue, no args used */ 253f8829a4aSRandall Stewart #define SCTP_LISTEN_FIX 0x0000800c 254f8829a4aSRandall Stewart /* Debug things that need to be purged */ 255f8829a4aSRandall Stewart #define SCTP_SET_INITIAL_DBG_SEQ 0x00009f00 256f8829a4aSRandall Stewart 257b54d3a6cSRandall Stewart /* JRS - Supported congestion control modules for pluggable 258b54d3a6cSRandall Stewart * congestion control 259b54d3a6cSRandall Stewart */ 260b54d3a6cSRandall Stewart /* Standard TCP Congestion Control */ 261b54d3a6cSRandall Stewart #define SCTP_CC_RFC2581 0x00000000 262b54d3a6cSRandall Stewart /* High Speed TCP Congestion Control (Floyd) */ 263b54d3a6cSRandall Stewart #define SCTP_CC_HSTCP 0x00000001 264b54d3a6cSRandall Stewart /* HTCP Congestion Control */ 265b54d3a6cSRandall Stewart #define SCTP_CC_HTCP 0x00000002 26648b6c649SRandall Stewart /* RTCC Congestion Control - RFC2581 plus */ 26748b6c649SRandall Stewart #define SCTP_CC_RTCC 0x00000003 26848b6c649SRandall Stewart 26948b6c649SRandall Stewart #define SCTP_CC_OPT_RTCC_SETMODE 0x00002000 27048b6c649SRandall Stewart #define SCTP_CC_OPT_USE_DCCC_ECN 0x00002001 271f79aab18SRandall Stewart #define SCTP_CC_OPT_STEADY_STEP 0x00002002 272b54d3a6cSRandall Stewart 273c3d72c80SMichael Tuexen #define SCTP_CMT_OFF 0 274c3d72c80SMichael Tuexen #define SCTP_CMT_BASE 1 275c3d72c80SMichael Tuexen #define SCTP_CMT_RPV1 2 276c3d72c80SMichael Tuexen #define SCTP_CMT_RPV2 3 277c3d72c80SMichael Tuexen #define SCTP_CMT_MPTCP 4 278c3d72c80SMichael Tuexen #define SCTP_CMT_MAX SCTP_CMT_MPTCP 279c3d72c80SMichael Tuexen 280f7a77f6fSMichael Tuexen /* RS - Supported stream scheduling modules for pluggable 281f7a77f6fSMichael Tuexen * stream scheduling 282f7a77f6fSMichael Tuexen */ 283f7a77f6fSMichael Tuexen /* Default simple round-robin */ 284f7a77f6fSMichael Tuexen #define SCTP_SS_DEFAULT 0x00000000 285f7a77f6fSMichael Tuexen /* Real round-robin */ 286f7a77f6fSMichael Tuexen #define SCTP_SS_ROUND_ROBIN 0x00000001 287f7a77f6fSMichael Tuexen /* Real round-robin per packet */ 288f7a77f6fSMichael Tuexen #define SCTP_SS_ROUND_ROBIN_PACKET 0x00000002 289f7a77f6fSMichael Tuexen /* Priority */ 290f7a77f6fSMichael Tuexen #define SCTP_SS_PRIORITY 0x00000003 291f7a77f6fSMichael Tuexen /* Fair Bandwidth */ 292f7a77f6fSMichael Tuexen #define SCTP_SS_FAIR_BANDWITH 0x00000004 293f7a77f6fSMichael Tuexen /* First-come, first-serve */ 294f7a77f6fSMichael Tuexen #define SCTP_SS_FIRST_COME 0x00000005 295f7a77f6fSMichael Tuexen 2969a6142d8SRandall Stewart 2979a6142d8SRandall Stewart /* fragment interleave constants 2989a6142d8SRandall Stewart * setting must be one of these or 2999a6142d8SRandall Stewart * EINVAL returned. 3009a6142d8SRandall Stewart */ 3019a6142d8SRandall Stewart #define SCTP_FRAG_LEVEL_0 0x00000000 3029a6142d8SRandall Stewart #define SCTP_FRAG_LEVEL_1 0x00000001 3039a6142d8SRandall Stewart #define SCTP_FRAG_LEVEL_2 0x00000002 3049a6142d8SRandall Stewart 305f8829a4aSRandall Stewart /* 306f8829a4aSRandall Stewart * user state values 307f8829a4aSRandall Stewart */ 308f8829a4aSRandall Stewart #define SCTP_CLOSED 0x0000 309f8829a4aSRandall Stewart #define SCTP_BOUND 0x1000 310f8829a4aSRandall Stewart #define SCTP_LISTEN 0x2000 311f8829a4aSRandall Stewart #define SCTP_COOKIE_WAIT 0x0002 312f8829a4aSRandall Stewart #define SCTP_COOKIE_ECHOED 0x0004 313f8829a4aSRandall Stewart #define SCTP_ESTABLISHED 0x0008 314f8829a4aSRandall Stewart #define SCTP_SHUTDOWN_SENT 0x0010 315f8829a4aSRandall Stewart #define SCTP_SHUTDOWN_RECEIVED 0x0020 316f8829a4aSRandall Stewart #define SCTP_SHUTDOWN_ACK_SENT 0x0040 317f8829a4aSRandall Stewart #define SCTP_SHUTDOWN_PENDING 0x0080 318f8829a4aSRandall Stewart 319f8829a4aSRandall Stewart /* 320f8829a4aSRandall Stewart * SCTP operational error codes (user visible) 321f8829a4aSRandall Stewart */ 322f8829a4aSRandall Stewart #define SCTP_CAUSE_NO_ERROR 0x0000 323f8829a4aSRandall Stewart #define SCTP_CAUSE_INVALID_STREAM 0x0001 324f8829a4aSRandall Stewart #define SCTP_CAUSE_MISSING_PARAM 0x0002 325f8829a4aSRandall Stewart #define SCTP_CAUSE_STALE_COOKIE 0x0003 326f8829a4aSRandall Stewart #define SCTP_CAUSE_OUT_OF_RESC 0x0004 327f8829a4aSRandall Stewart #define SCTP_CAUSE_UNRESOLVABLE_ADDR 0x0005 328f8829a4aSRandall Stewart #define SCTP_CAUSE_UNRECOG_CHUNK 0x0006 329f8829a4aSRandall Stewart #define SCTP_CAUSE_INVALID_PARAM 0x0007 330f8829a4aSRandall Stewart #define SCTP_CAUSE_UNRECOG_PARAM 0x0008 331f8829a4aSRandall Stewart #define SCTP_CAUSE_NO_USER_DATA 0x0009 332f8829a4aSRandall Stewart #define SCTP_CAUSE_COOKIE_IN_SHUTDOWN 0x000a 333f8829a4aSRandall Stewart #define SCTP_CAUSE_RESTART_W_NEWADDR 0x000b 334f8829a4aSRandall Stewart #define SCTP_CAUSE_USER_INITIATED_ABT 0x000c 335f8829a4aSRandall Stewart #define SCTP_CAUSE_PROTOCOL_VIOLATION 0x000d 336f8829a4aSRandall Stewart 3373232788eSRandall Stewart /* Error causes from RFC5061 */ 338830d754dSRandall Stewart #define SCTP_CAUSE_DELETING_LAST_ADDR 0x00a0 339830d754dSRandall Stewart #define SCTP_CAUSE_RESOURCE_SHORTAGE 0x00a1 340830d754dSRandall Stewart #define SCTP_CAUSE_DELETING_SRC_ADDR 0x00a2 341830d754dSRandall Stewart #define SCTP_CAUSE_ILLEGAL_ASCONF_ACK 0x00a3 342830d754dSRandall Stewart #define SCTP_CAUSE_REQUEST_REFUSED 0x00a4 343830d754dSRandall Stewart 344830d754dSRandall Stewart /* Error causes from nat-draft */ 345830d754dSRandall Stewart #define SCTP_CAUSE_NAT_COLLIDING_STATE 0x00b0 346830d754dSRandall Stewart #define SCTP_CAUSE_NAT_MISSING_STATE 0x00b1 347f8829a4aSRandall Stewart 3483232788eSRandall Stewart /* Error causes from RFC4895 */ 349f8829a4aSRandall Stewart #define SCTP_CAUSE_UNSUPPORTED_HMACID 0x0105 350f8829a4aSRandall Stewart 351f8829a4aSRandall Stewart /* 352b1ce21c6SRebecca Cran * error cause parameters (user visible) 353f8829a4aSRandall Stewart */ 354f8829a4aSRandall Stewart struct sctp_error_cause { 355f8829a4aSRandall Stewart uint16_t code; 356f8829a4aSRandall Stewart uint16_t length; 357f8829a4aSRandall Stewart /* optional cause-specific info may follow */ 358b3f1ea41SRandall Stewart } SCTP_PACKED; 359f8829a4aSRandall Stewart 360f8829a4aSRandall Stewart struct sctp_error_invalid_stream { 361b3f1ea41SRandall Stewart struct sctp_error_cause cause; /* code=SCTP_ERROR_INVALID_STREAM */ 362f8829a4aSRandall Stewart uint16_t stream_id; /* stream id of the DATA in error */ 363f8829a4aSRandall Stewart uint16_t reserved; 364b3f1ea41SRandall Stewart } SCTP_PACKED; 365f8829a4aSRandall Stewart 366f8829a4aSRandall Stewart struct sctp_error_missing_param { 367b3f1ea41SRandall Stewart struct sctp_error_cause cause; /* code=SCTP_ERROR_MISSING_PARAM */ 368b3f1ea41SRandall Stewart uint32_t num_missing_params; /* number of missing parameters */ 369f8829a4aSRandall Stewart /* uint16_t param_type's follow */ 370b3f1ea41SRandall Stewart } SCTP_PACKED; 371f8829a4aSRandall Stewart 372f8829a4aSRandall Stewart struct sctp_error_stale_cookie { 373b3f1ea41SRandall Stewart struct sctp_error_cause cause; /* code=SCTP_ERROR_STALE_COOKIE */ 374f8829a4aSRandall Stewart uint32_t stale_time; /* time in usec of staleness */ 375b3f1ea41SRandall Stewart } SCTP_PACKED; 376f8829a4aSRandall Stewart 377f8829a4aSRandall Stewart struct sctp_error_out_of_resource { 378b3f1ea41SRandall Stewart struct sctp_error_cause cause; /* code=SCTP_ERROR_OUT_OF_RESOURCES */ 379b3f1ea41SRandall Stewart } SCTP_PACKED; 380f8829a4aSRandall Stewart 381f8829a4aSRandall Stewart struct sctp_error_unresolv_addr { 382b3f1ea41SRandall Stewart struct sctp_error_cause cause; /* code=SCTP_ERROR_UNRESOLVABLE_ADDR */ 383f8829a4aSRandall Stewart 384b3f1ea41SRandall Stewart } SCTP_PACKED; 385f8829a4aSRandall Stewart 386f8829a4aSRandall Stewart struct sctp_error_unrecognized_chunk { 387b3f1ea41SRandall Stewart struct sctp_error_cause cause; /* code=SCTP_ERROR_UNRECOG_CHUNK */ 388f8829a4aSRandall Stewart struct sctp_chunkhdr ch;/* header from chunk in error */ 389b3f1ea41SRandall Stewart } SCTP_PACKED; 390f8829a4aSRandall Stewart 391f8829a4aSRandall Stewart /* 392f8829a4aSRandall Stewart * Main SCTP chunk types we place these here so natd and f/w's in user land 393f8829a4aSRandall Stewart * can find them. 394f8829a4aSRandall Stewart */ 395f8829a4aSRandall Stewart /************0x00 series ***********/ 396f8829a4aSRandall Stewart #define SCTP_DATA 0x00 397f8829a4aSRandall Stewart #define SCTP_INITIATION 0x01 398f8829a4aSRandall Stewart #define SCTP_INITIATION_ACK 0x02 399f8829a4aSRandall Stewart #define SCTP_SELECTIVE_ACK 0x03 400f8829a4aSRandall Stewart #define SCTP_HEARTBEAT_REQUEST 0x04 401f8829a4aSRandall Stewart #define SCTP_HEARTBEAT_ACK 0x05 402f8829a4aSRandall Stewart #define SCTP_ABORT_ASSOCIATION 0x06 403f8829a4aSRandall Stewart #define SCTP_SHUTDOWN 0x07 404f8829a4aSRandall Stewart #define SCTP_SHUTDOWN_ACK 0x08 405f8829a4aSRandall Stewart #define SCTP_OPERATION_ERROR 0x09 406f8829a4aSRandall Stewart #define SCTP_COOKIE_ECHO 0x0a 407f8829a4aSRandall Stewart #define SCTP_COOKIE_ACK 0x0b 408f8829a4aSRandall Stewart #define SCTP_ECN_ECHO 0x0c 409f8829a4aSRandall Stewart #define SCTP_ECN_CWR 0x0d 410f8829a4aSRandall Stewart #define SCTP_SHUTDOWN_COMPLETE 0x0e 4113232788eSRandall Stewart /* RFC4895 */ 412f8829a4aSRandall Stewart #define SCTP_AUTHENTICATION 0x0f 413830d754dSRandall Stewart /* EY nr_sack chunk id*/ 414830d754dSRandall Stewart #define SCTP_NR_SELECTIVE_ACK 0x10 415f8829a4aSRandall Stewart /************0x40 series ***********/ 416f8829a4aSRandall Stewart /************0x80 series ***********/ 4173232788eSRandall Stewart /* RFC5061 */ 418f8829a4aSRandall Stewart #define SCTP_ASCONF_ACK 0x80 419f8829a4aSRandall Stewart /* draft-ietf-stewart-pktdrpsctp */ 420f8829a4aSRandall Stewart #define SCTP_PACKET_DROPPED 0x81 421f8829a4aSRandall Stewart /* draft-ietf-stewart-strreset-xxx */ 422f8829a4aSRandall Stewart #define SCTP_STREAM_RESET 0x82 4239a972525SRandall Stewart 4249a972525SRandall Stewart /* RFC4820 */ 4259a972525SRandall Stewart #define SCTP_PAD_CHUNK 0x84 426f8829a4aSRandall Stewart /************0xc0 series ***********/ 427f8829a4aSRandall Stewart /* RFC3758 */ 428f8829a4aSRandall Stewart #define SCTP_FORWARD_CUM_TSN 0xc0 4293232788eSRandall Stewart /* RFC5061 */ 430f8829a4aSRandall Stewart #define SCTP_ASCONF 0xc1 431f8829a4aSRandall Stewart 432f8829a4aSRandall Stewart 433f8829a4aSRandall Stewart /* ABORT and SHUTDOWN COMPLETE FLAG */ 434f8829a4aSRandall Stewart #define SCTP_HAD_NO_TCB 0x01 435f8829a4aSRandall Stewart 436f8829a4aSRandall Stewart /* Packet dropped flags */ 437f8829a4aSRandall Stewart #define SCTP_FROM_MIDDLE_BOX SCTP_HAD_NO_TCB 438f8829a4aSRandall Stewart #define SCTP_BADCRC 0x02 439f8829a4aSRandall Stewart #define SCTP_PACKET_TRUNCATED 0x04 440f8829a4aSRandall Stewart 441a21779f0SRandall Stewart /* Flag for ECN -CWR */ 442a21779f0SRandall Stewart #define SCTP_CWR_REDUCE_OVERRIDE 0x01 443a21779f0SRandall Stewart #define SCTP_CWR_IN_SAME_WINDOW 0x02 444a21779f0SRandall Stewart 445f8829a4aSRandall Stewart #define SCTP_SAT_NETWORK_MIN 400 /* min ms for RTT to set satellite 446f8829a4aSRandall Stewart * time */ 447f8829a4aSRandall Stewart #define SCTP_SAT_NETWORK_BURST_INCR 2 /* how many times to multiply maxburst 448f8829a4aSRandall Stewart * in sat */ 449f8829a4aSRandall Stewart 450f8829a4aSRandall Stewart /* Data Chuck Specific Flags */ 451f8829a4aSRandall Stewart #define SCTP_DATA_FRAG_MASK 0x03 452f8829a4aSRandall Stewart #define SCTP_DATA_MIDDLE_FRAG 0x00 453f8829a4aSRandall Stewart #define SCTP_DATA_LAST_FRAG 0x01 454f8829a4aSRandall Stewart #define SCTP_DATA_FIRST_FRAG 0x02 455f8829a4aSRandall Stewart #define SCTP_DATA_NOT_FRAG 0x03 456f8829a4aSRandall Stewart #define SCTP_DATA_UNORDERED 0x04 457b3f1ea41SRandall Stewart #define SCTP_DATA_SACK_IMMEDIATELY 0x08 458f8829a4aSRandall Stewart /* ECN Nonce: SACK Chunk Specific Flags */ 459f8829a4aSRandall Stewart #define SCTP_SACK_NONCE_SUM 0x01 460f8829a4aSRandall Stewart 461f8829a4aSRandall Stewart /* CMT DAC algorithm SACK flag */ 462f8829a4aSRandall Stewart #define SCTP_SACK_CMT_DAC 0x80 463f8829a4aSRandall Stewart 46458967d8dSRandall Stewart /* 46558967d8dSRandall Stewart * PCB flags (in sctp_flags bitmask). 46658967d8dSRandall Stewart * Note the features and flags are meant 46758967d8dSRandall Stewart * for use by netstat. 46858967d8dSRandall Stewart */ 46958967d8dSRandall Stewart #define SCTP_PCB_FLAGS_UDPTYPE 0x00000001 47058967d8dSRandall Stewart #define SCTP_PCB_FLAGS_TCPTYPE 0x00000002 47158967d8dSRandall Stewart #define SCTP_PCB_FLAGS_BOUNDALL 0x00000004 47258967d8dSRandall Stewart #define SCTP_PCB_FLAGS_ACCEPTING 0x00000008 47358967d8dSRandall Stewart #define SCTP_PCB_FLAGS_UNBOUND 0x00000010 47458967d8dSRandall Stewart #define SCTP_PCB_FLAGS_CLOSE_IP 0x00040000 47558967d8dSRandall Stewart #define SCTP_PCB_FLAGS_WAS_CONNECTED 0x00080000 47658967d8dSRandall Stewart #define SCTP_PCB_FLAGS_WAS_ABORTED 0x00100000 47758967d8dSRandall Stewart /* TCP model support */ 47858967d8dSRandall Stewart 47958967d8dSRandall Stewart #define SCTP_PCB_FLAGS_CONNECTED 0x00200000 48058967d8dSRandall Stewart #define SCTP_PCB_FLAGS_IN_TCPPOOL 0x00400000 48158967d8dSRandall Stewart #define SCTP_PCB_FLAGS_DONT_WAKE 0x00800000 48258967d8dSRandall Stewart #define SCTP_PCB_FLAGS_WAKEOUTPUT 0x01000000 48358967d8dSRandall Stewart #define SCTP_PCB_FLAGS_WAKEINPUT 0x02000000 48458967d8dSRandall Stewart #define SCTP_PCB_FLAGS_BOUND_V6 0x04000000 485bfefd190SRandall Stewart #define SCTP_PCB_FLAGS_BLOCKING_IO 0x08000000 486bfefd190SRandall Stewart #define SCTP_PCB_FLAGS_SOCKET_GONE 0x10000000 487bfefd190SRandall Stewart #define SCTP_PCB_FLAGS_SOCKET_ALLGONE 0x20000000 488cd1386abSMichael Tuexen #define SCTP_PCB_FLAGS_SOCKET_CANT_READ 0x40000000 48958967d8dSRandall Stewart /* flags to copy to new PCB */ 490bfefd190SRandall Stewart #define SCTP_PCB_COPY_FLAGS (SCTP_PCB_FLAGS_BOUNDALL|\ 491bfefd190SRandall Stewart SCTP_PCB_FLAGS_WAKEINPUT|\ 492bfefd190SRandall Stewart SCTP_PCB_FLAGS_BOUND_V6) 49358967d8dSRandall Stewart 49458967d8dSRandall Stewart 49558967d8dSRandall Stewart /* 49658967d8dSRandall Stewart * PCB Features (in sctp_features bitmask) 49758967d8dSRandall Stewart */ 498e2e7c62eSMichael Tuexen #define SCTP_PCB_FLAGS_EXT_RCVINFO 0x00000002 /* deprecated */ 49958967d8dSRandall Stewart #define SCTP_PCB_FLAGS_DONOT_HEARTBEAT 0x00000004 50058967d8dSRandall Stewart #define SCTP_PCB_FLAGS_FRAG_INTERLEAVE 0x00000008 50158967d8dSRandall Stewart #define SCTP_PCB_FLAGS_INTERLEAVE_STRMS 0x00000010 50258967d8dSRandall Stewart #define SCTP_PCB_FLAGS_DO_ASCONF 0x00000020 50358967d8dSRandall Stewart #define SCTP_PCB_FLAGS_AUTO_ASCONF 0x00000040 50417205eccSRandall Stewart #define SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE 0x00000080 50558967d8dSRandall Stewart /* socket options */ 50658967d8dSRandall Stewart #define SCTP_PCB_FLAGS_NODELAY 0x00000100 50758967d8dSRandall Stewart #define SCTP_PCB_FLAGS_AUTOCLOSE 0x00000200 508e2e7c62eSMichael Tuexen #define SCTP_PCB_FLAGS_RECVDATAIOEVNT 0x00000400 /* deprecated */ 50958967d8dSRandall Stewart #define SCTP_PCB_FLAGS_RECVASSOCEVNT 0x00000800 51058967d8dSRandall Stewart #define SCTP_PCB_FLAGS_RECVPADDREVNT 0x00001000 51158967d8dSRandall Stewart #define SCTP_PCB_FLAGS_RECVPEERERR 0x00002000 51258967d8dSRandall Stewart #define SCTP_PCB_FLAGS_RECVSENDFAILEVNT 0x00004000 51358967d8dSRandall Stewart #define SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT 0x00008000 51458967d8dSRandall Stewart #define SCTP_PCB_FLAGS_ADAPTATIONEVNT 0x00010000 51558967d8dSRandall Stewart #define SCTP_PCB_FLAGS_PDAPIEVNT 0x00020000 51658967d8dSRandall Stewart #define SCTP_PCB_FLAGS_AUTHEVNT 0x00040000 51758967d8dSRandall Stewart #define SCTP_PCB_FLAGS_STREAM_RESETEVNT 0x00080000 51858967d8dSRandall Stewart #define SCTP_PCB_FLAGS_NO_FRAGMENT 0x00100000 51958967d8dSRandall Stewart #define SCTP_PCB_FLAGS_EXPLICIT_EOR 0x00400000 520bfefd190SRandall Stewart #define SCTP_PCB_FLAGS_NEEDS_MAPPED_V4 0x00800000 521c54a18d2SRandall Stewart #define SCTP_PCB_FLAGS_MULTIPLE_ASCONFS 0x01000000 5226d9e8f2bSRandall Stewart #define SCTP_PCB_FLAGS_PORTREUSE 0x02000000 523830d754dSRandall Stewart #define SCTP_PCB_FLAGS_DRYEVNT 0x04000000 524e2e7c62eSMichael Tuexen #define SCTP_PCB_FLAGS_RECVRCVINFO 0x08000000 525e2e7c62eSMichael Tuexen #define SCTP_PCB_FLAGS_RECVNXTINFO 0x10000000 526e2e7c62eSMichael Tuexen 5272afb3e84SRandall Stewart /*- 5282afb3e84SRandall Stewart * mobility_features parameters (by micchie).Note 5292afb3e84SRandall Stewart * these features are applied against the 5302afb3e84SRandall Stewart * sctp_mobility_features flags.. not the sctp_features 5312afb3e84SRandall Stewart * flags. 5322afb3e84SRandall Stewart */ 5332afb3e84SRandall Stewart #define SCTP_MOBILITY_BASE 0x00000001 5342afb3e84SRandall Stewart #define SCTP_MOBILITY_FASTHANDOFF 0x00000002 535851b7298SRandall Stewart #define SCTP_MOBILITY_PRIM_DELETED 0x00000004 5362afb3e84SRandall Stewart 5372afb3e84SRandall Stewart 538d61a0ae0SRandall Stewart #define SCTP_SMALLEST_PMTU 512 /* smallest pmtu allowed when disabling PMTU 539d61a0ae0SRandall Stewart * discovery */ 540d61a0ae0SRandall Stewart 541f8829a4aSRandall Stewart #include <netinet/sctp_uio.h> 542f8829a4aSRandall Stewart 54380fefe0aSRandall Stewart /* This dictates the size of the packet 54480fefe0aSRandall Stewart * collection buffer. This only applies 54580fefe0aSRandall Stewart * if SCTP_PACKET_LOGGING is enabled in 54680fefe0aSRandall Stewart * your config. 54780fefe0aSRandall Stewart */ 548207304d4SRandall Stewart #define SCTP_PACKET_LOG_SIZE 65536 549207304d4SRandall Stewart 55018e198d3SRandall Stewart /* Maximum delays and such a user can set for options that 55118e198d3SRandall Stewart * take ms. 55218e198d3SRandall Stewart */ 55318e198d3SRandall Stewart #define SCTP_MAX_SACK_DELAY 500 /* per RFC4960 */ 55418e198d3SRandall Stewart #define SCTP_MAX_HB_INTERVAL 14400000 /* 4 hours in ms */ 55518e198d3SRandall Stewart #define SCTP_MAX_COOKIE_LIFE 3600000 /* 1 hour in ms */ 55618e198d3SRandall Stewart 55718e198d3SRandall Stewart 55880fefe0aSRandall Stewart /* Types of logging/KTR tracing that can be enabled via the 55980fefe0aSRandall Stewart * sysctl net.inet.sctp.sctp_logging. You must also enable 56080fefe0aSRandall Stewart * SUBSYS tracing. 56180fefe0aSRandall Stewart * Note that you must have the SCTP option in the kernel 56280fefe0aSRandall Stewart * to enable these as well. 56380fefe0aSRandall Stewart */ 56480fefe0aSRandall Stewart #define SCTP_BLK_LOGGING_ENABLE 0x00000001 56580fefe0aSRandall Stewart #define SCTP_CWND_MONITOR_ENABLE 0x00000002 56680fefe0aSRandall Stewart #define SCTP_CWND_LOGGING_ENABLE 0x00000004 56780fefe0aSRandall Stewart #define SCTP_EARLYFR_LOGGING_ENABLE 0x00000010 56880fefe0aSRandall Stewart #define SCTP_FLIGHT_LOGGING_ENABLE 0x00000020 56980fefe0aSRandall Stewart #define SCTP_FR_LOGGING_ENABLE 0x00000040 57080fefe0aSRandall Stewart #define SCTP_LOCK_LOGGING_ENABLE 0x00000080 57180fefe0aSRandall Stewart #define SCTP_MAP_LOGGING_ENABLE 0x00000100 57280fefe0aSRandall Stewart #define SCTP_MBCNT_LOGGING_ENABLE 0x00000200 57380fefe0aSRandall Stewart #define SCTP_MBUF_LOGGING_ENABLE 0x00000400 57480fefe0aSRandall Stewart #define SCTP_NAGLE_LOGGING_ENABLE 0x00000800 57580fefe0aSRandall Stewart #define SCTP_RECV_RWND_LOGGING_ENABLE 0x00001000 57680fefe0aSRandall Stewart #define SCTP_RTTVAR_LOGGING_ENABLE 0x00002000 57780fefe0aSRandall Stewart #define SCTP_SACK_LOGGING_ENABLE 0x00004000 57880fefe0aSRandall Stewart #define SCTP_SACK_RWND_LOGGING_ENABLE 0x00008000 57980fefe0aSRandall Stewart #define SCTP_SB_LOGGING_ENABLE 0x00010000 58080fefe0aSRandall Stewart #define SCTP_STR_LOGGING_ENABLE 0x00020000 58180fefe0aSRandall Stewart #define SCTP_WAKE_LOGGING_ENABLE 0x00040000 58280fefe0aSRandall Stewart #define SCTP_LOG_MAXBURST_ENABLE 0x00080000 58380fefe0aSRandall Stewart #define SCTP_LOG_RWND_ENABLE 0x00100000 58480fefe0aSRandall Stewart #define SCTP_LOG_SACK_ARRIVALS_ENABLE 0x00200000 58580fefe0aSRandall Stewart #define SCTP_LTRACE_CHUNK_ENABLE 0x00400000 58680fefe0aSRandall Stewart #define SCTP_LTRACE_ERROR_ENABLE 0x00800000 587d95ddf02SRandall Stewart #define SCTP_LAST_PACKET_TRACING 0x01000000 588c4739e2fSRandall Stewart #define SCTP_THRESHOLD_LOGGING 0x02000000 5899f22f500SRandall Stewart #define SCTP_LOG_AT_SEND_2_SCTP 0x04000000 5909f22f500SRandall Stewart #define SCTP_LOG_AT_SEND_2_OUTQ 0x08000000 5910c0982b8SRandall Stewart #define SCTP_LOG_TRY_ADVANCE 0x10000000 592207304d4SRandall Stewart 5932afb3e84SRandall Stewart 594b3f1ea41SRandall Stewart #undef SCTP_PACKED 595b3f1ea41SRandall Stewart 596f8829a4aSRandall Stewart #endif /* !_NETINET_SCTP_H_ */ 597