1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved. 5 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. 6 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions are met: 10 * 11 * a) Redistributions of source code must retain the above copyright notice, 12 * this list of conditions and the following disclaimer. 13 * 14 * b) Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in 16 * the documentation and/or other materials provided with the distribution. 17 * 18 * c) Neither the name of Cisco Systems, Inc. nor the names of its 19 * contributors may be used to endorse or promote products derived 20 * from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 24 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 32 * THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #if defined(__FreeBSD__) && !defined(__Userspace__) 36 #include <sys/cdefs.h> 37 __FBSDID("$FreeBSD: head/sys/netinet/sctp_constants.h 363440 2020-07-23 01:35:24Z tuexen $"); 38 #endif 39 40 #ifndef _NETINET_SCTP_CONSTANTS_H_ 41 #define _NETINET_SCTP_CONSTANTS_H_ 42 43 #if defined(_WIN32) && defined(__Userspace__) 44 extern void getwintimeofday(struct timeval *tv); 45 #endif 46 47 /* IANA assigned port number for SCTP over UDP encapsulation */ 48 #define SCTP_OVER_UDP_TUNNELING_PORT 9899 49 50 /* Number of packets to get before sack sent by default */ 51 #define SCTP_DEFAULT_SACK_FREQ 2 52 53 /* Address limit - This variable is calculated 54 * based on an 65535 byte max ip packet. We take out 100 bytes 55 * for the cookie, 40 bytes for a v6 header and 32 56 * bytes for the init structure. A second init structure 57 * for the init-ack and then finally a third one for the 58 * imbedded init. This yeilds 100+40+(3 * 32) = 236 bytes. 59 * This leaves 65299 bytes for addresses. We throw out the 299 bytes. 60 * Now whatever we send in the INIT() we need to allow to get back in the 61 * INIT-ACK plus all the values from INIT and INIT-ACK 62 * listed in the cookie. Plus we need some overhead for 63 * maybe copied parameters in the COOKIE. If we 64 * allow 1080 addresses, and each side has 1080 V6 addresses 65 * that will be 21600 bytes. In the INIT-ACK we will 66 * see the INIT-ACK 21600 + 43200 in the cookie. This leaves 67 * about 500 bytes slack for misc things in the cookie. 68 */ 69 #define SCTP_ADDRESS_LIMIT 1080 70 71 /* We need at least 2k of space for us, inits 72 * larger than that lets abort. 73 */ 74 #define SCTP_LARGEST_INIT_ACCEPTED (65535 - 2048) 75 76 /* Largest length of a chunk */ 77 #define SCTP_MAX_CHUNK_LENGTH 0xffff 78 /* Largest length of an error cause */ 79 #define SCTP_MAX_CAUSE_LENGTH 0xffff 80 /* Number of addresses where we just skip the counting */ 81 #define SCTP_COUNT_LIMIT 40 82 83 #define SCTP_ZERO_COPY_TICK_DELAY (((100 * hz) + 999) / 1000) 84 #define SCTP_ZERO_COPY_SENDQ_TICK_DELAY (((100 * hz) + 999) / 1000) 85 86 /* Number of ticks to delay before running 87 * iterator on an address change. 88 */ 89 #define SCTP_ADDRESS_TICK_DELAY 2 90 91 #define SCTP_VERSION_STRING "KAME-BSD 1.1" 92 /* #define SCTP_AUDITING_ENABLED 1 used for debug/auditing */ 93 #define SCTP_AUDIT_SIZE 256 94 95 96 #define SCTP_KTRHEAD_NAME "sctp_iterator" 97 #define SCTP_KTHREAD_PAGES 0 98 99 #define SCTP_MCORE_NAME "sctp_core_worker" 100 101 102 /* If you support Multi-VRF how big to 103 * make the initial array of VRF's to. 104 */ 105 #define SCTP_DEFAULT_VRF_SIZE 4 106 107 /* JRS - Values defined for the HTCP algorithm */ 108 #define ALPHA_BASE (1<<7) /* 1.0 with shift << 7 */ 109 #define BETA_MIN (1<<6) /* 0.5 with shift << 7 */ 110 #define BETA_MAX 102 /* 0.8 with shift << 7 */ 111 112 /* Places that CWND log can happen from */ 113 #define SCTP_CWND_LOG_FROM_FR 1 114 #define SCTP_CWND_LOG_FROM_RTX 2 115 #define SCTP_CWND_LOG_FROM_BRST 3 116 #define SCTP_CWND_LOG_FROM_SS 4 117 #define SCTP_CWND_LOG_FROM_CA 5 118 #define SCTP_CWND_LOG_FROM_SAT 6 119 #define SCTP_BLOCK_LOG_INTO_BLK 7 120 #define SCTP_BLOCK_LOG_OUTOF_BLK 8 121 #define SCTP_BLOCK_LOG_CHECK 9 122 #define SCTP_STR_LOG_FROM_INTO_STRD 10 123 #define SCTP_STR_LOG_FROM_IMMED_DEL 11 124 #define SCTP_STR_LOG_FROM_INSERT_HD 12 125 #define SCTP_STR_LOG_FROM_INSERT_MD 13 126 #define SCTP_STR_LOG_FROM_INSERT_TL 14 127 #define SCTP_STR_LOG_FROM_MARK_TSN 15 128 #define SCTP_STR_LOG_FROM_EXPRS_DEL 16 129 #define SCTP_FR_LOG_BIGGEST_TSNS 17 130 #define SCTP_FR_LOG_STRIKE_TEST 18 131 #define SCTP_FR_LOG_STRIKE_CHUNK 19 132 #define SCTP_FR_T3_TIMEOUT 20 133 #define SCTP_MAP_PREPARE_SLIDE 21 134 #define SCTP_MAP_SLIDE_FROM 22 135 #define SCTP_MAP_SLIDE_RESULT 23 136 #define SCTP_MAP_SLIDE_CLEARED 24 137 #define SCTP_MAP_SLIDE_NONE 25 138 #define SCTP_FR_T3_MARK_TIME 26 139 #define SCTP_FR_T3_MARKED 27 140 #define SCTP_FR_T3_STOPPED 28 141 #define SCTP_FR_MARKED 30 142 #define SCTP_CWND_LOG_NOADV_SS 31 143 #define SCTP_CWND_LOG_NOADV_CA 32 144 #define SCTP_MAX_BURST_APPLIED 33 145 #define SCTP_MAX_IFP_APPLIED 34 146 #define SCTP_MAX_BURST_ERROR_STOP 35 147 #define SCTP_INCREASE_PEER_RWND 36 148 #define SCTP_DECREASE_PEER_RWND 37 149 #define SCTP_SET_PEER_RWND_VIA_SACK 38 150 #define SCTP_LOG_MBCNT_INCREASE 39 151 #define SCTP_LOG_MBCNT_DECREASE 40 152 #define SCTP_LOG_MBCNT_CHKSET 41 153 #define SCTP_LOG_NEW_SACK 42 154 #define SCTP_LOG_TSN_ACKED 43 155 #define SCTP_LOG_TSN_REVOKED 44 156 #define SCTP_LOG_LOCK_TCB 45 157 #define SCTP_LOG_LOCK_INP 46 158 #define SCTP_LOG_LOCK_SOCK 47 159 #define SCTP_LOG_LOCK_SOCKBUF_R 48 160 #define SCTP_LOG_LOCK_SOCKBUF_S 49 161 #define SCTP_LOG_LOCK_CREATE 50 162 #define SCTP_LOG_INITIAL_RTT 51 163 #define SCTP_LOG_RTTVAR 52 164 #define SCTP_LOG_SBALLOC 53 165 #define SCTP_LOG_SBFREE 54 166 #define SCTP_LOG_SBRESULT 55 167 #define SCTP_FR_DUPED 56 168 #define SCTP_FR_MARKED_EARLY 57 169 #define SCTP_FR_CWND_REPORT 58 170 #define SCTP_FR_CWND_REPORT_START 59 171 #define SCTP_FR_CWND_REPORT_STOP 60 172 #define SCTP_CWND_LOG_FROM_SEND 61 173 #define SCTP_CWND_INITIALIZATION 62 174 #define SCTP_CWND_LOG_FROM_T3 63 175 #define SCTP_CWND_LOG_FROM_SACK 64 176 #define SCTP_CWND_LOG_NO_CUMACK 65 177 #define SCTP_CWND_LOG_FROM_RESEND 66 178 #define SCTP_FR_LOG_CHECK_STRIKE 67 179 #define SCTP_SEND_NOW_COMPLETES 68 180 #define SCTP_CWND_LOG_FILL_OUTQ_CALLED 69 181 #define SCTP_CWND_LOG_FILL_OUTQ_FILLS 70 182 #define SCTP_LOG_FREE_SENT 71 183 #define SCTP_NAGLE_APPLIED 72 184 #define SCTP_NAGLE_SKIPPED 73 185 #define SCTP_WAKESND_FROM_SACK 74 186 #define SCTP_WAKESND_FROM_FWDTSN 75 187 #define SCTP_NOWAKE_FROM_SACK 76 188 #define SCTP_CWNDLOG_PRESEND 77 189 #define SCTP_CWNDLOG_ENDSEND 78 190 #define SCTP_AT_END_OF_SACK 79 191 #define SCTP_REASON_FOR_SC 80 192 #define SCTP_BLOCK_LOG_INTO_BLKA 81 193 #define SCTP_ENTER_USER_RECV 82 194 #define SCTP_USER_RECV_SACKS 83 195 #define SCTP_SORECV_BLOCKSA 84 196 #define SCTP_SORECV_BLOCKSB 85 197 #define SCTP_SORECV_DONE 86 198 #define SCTP_SACK_RWND_UPDATE 87 199 #define SCTP_SORECV_ENTER 88 200 #define SCTP_SORECV_ENTERPL 89 201 #define SCTP_MBUF_INPUT 90 202 #define SCTP_MBUF_IALLOC 91 203 #define SCTP_MBUF_IFREE 92 204 #define SCTP_MBUF_ICOPY 93 205 #define SCTP_MBUF_SPLIT 94 206 #define SCTP_SORCV_FREECTL 95 207 #define SCTP_SORCV_DOESCPY 96 208 #define SCTP_SORCV_DOESLCK 97 209 #define SCTP_SORCV_DOESADJ 98 210 #define SCTP_SORCV_BOTWHILE 99 211 #define SCTP_SORCV_PASSBF 100 212 #define SCTP_SORCV_ADJD 101 213 #define SCTP_UNKNOWN_MAX 102 214 #define SCTP_RANDY_STUFF 103 215 #define SCTP_RANDY_STUFF1 104 216 #define SCTP_STRMOUT_LOG_ASSIGN 105 217 #define SCTP_STRMOUT_LOG_SEND 106 218 #define SCTP_FLIGHT_LOG_DOWN_CA 107 219 #define SCTP_FLIGHT_LOG_UP 108 220 #define SCTP_FLIGHT_LOG_DOWN_GAP 109 221 #define SCTP_FLIGHT_LOG_DOWN_RSND 110 222 #define SCTP_FLIGHT_LOG_UP_RSND 111 223 #define SCTP_FLIGHT_LOG_DOWN_RSND_TO 112 224 #define SCTP_FLIGHT_LOG_DOWN_WP 113 225 #define SCTP_FLIGHT_LOG_UP_REVOKE 114 226 #define SCTP_FLIGHT_LOG_DOWN_PDRP 115 227 #define SCTP_FLIGHT_LOG_DOWN_PMTU 116 228 #define SCTP_SACK_LOG_NORMAL 117 229 #define SCTP_SACK_LOG_EXPRESS 118 230 #define SCTP_MAP_TSN_ENTERS 119 231 #define SCTP_THRESHOLD_CLEAR 120 232 #define SCTP_THRESHOLD_INCR 121 233 #define SCTP_FLIGHT_LOG_DWN_WP_FWD 122 234 #define SCTP_FWD_TSN_CHECK 123 235 #define SCTP_LOG_MAX_TYPES 124 236 /* 237 * To turn on various logging, you must first enable 'options KTR' and 238 * you might want to bump the entires 'options KTR_ENTRIES=80000'. 239 * To get something to log you define one of the logging defines. 240 * (see LINT). 241 * 242 * This gets the compile in place, but you still need to turn the 243 * logging flag on too in the sysctl (see in sctp.h). 244 */ 245 246 #define SCTP_LOG_EVENT_UNKNOWN 0 247 #define SCTP_LOG_EVENT_CWND 1 248 #define SCTP_LOG_EVENT_BLOCK 2 249 #define SCTP_LOG_EVENT_STRM 3 250 #define SCTP_LOG_EVENT_FR 4 251 #define SCTP_LOG_EVENT_MAP 5 252 #define SCTP_LOG_EVENT_MAXBURST 6 253 #define SCTP_LOG_EVENT_RWND 7 254 #define SCTP_LOG_EVENT_MBCNT 8 255 #define SCTP_LOG_EVENT_SACK 9 256 #define SCTP_LOG_LOCK_EVENT 10 257 #define SCTP_LOG_EVENT_RTT 11 258 #define SCTP_LOG_EVENT_SB 12 259 #define SCTP_LOG_EVENT_NAGLE 13 260 #define SCTP_LOG_EVENT_WAKE 14 261 #define SCTP_LOG_MISC_EVENT 15 262 #define SCTP_LOG_EVENT_CLOSE 16 263 #define SCTP_LOG_EVENT_MBUF 17 264 #define SCTP_LOG_CHUNK_PROC 18 265 #define SCTP_LOG_ERROR_RET 19 266 267 #define SCTP_LOG_MAX_EVENT 20 268 269 #define SCTP_LOCK_UNKNOWN 2 270 271 272 /* number of associations by default for zone allocation */ 273 #define SCTP_MAX_NUM_OF_ASOC 40000 274 /* how many addresses per assoc remote and local */ 275 #define SCTP_SCALE_FOR_ADDR 2 276 277 /* default MULTIPLE_ASCONF mode enable(1)/disable(0) value (sysctl) */ 278 #define SCTP_DEFAULT_MULTIPLE_ASCONFS 0 279 280 /* 281 * Threshold for rwnd updates, we have to read (sb_hiwat >> 282 * SCTP_RWND_HIWAT_SHIFT) before we will look to see if we need to send a 283 * window update sack. When we look, we compare the last rwnd we sent vs the 284 * current rwnd. It too must be greater than this value. Using 3 divdes the 285 * hiwat by 8, so for 200k rwnd we need to read 24k. For a 64k rwnd we need 286 * to read 8k. This seems about right.. I hope :-D.. we do set a 287 * min of a MTU on it so if the rwnd is real small we will insist 288 * on a full MTU of 1500 bytes. 289 */ 290 #define SCTP_RWND_HIWAT_SHIFT 3 291 292 /* How much of the rwnd must the 293 * message be taking up to start partial delivery. 294 * We calculate this by shifing the hi_water (recv_win) 295 * left the following .. set to 1, when a message holds 296 * 1/2 the rwnd. If we set it to 2 when a message holds 297 * 1/4 the rwnd...etc.. 298 */ 299 300 #define SCTP_PARTIAL_DELIVERY_SHIFT 1 301 302 /* 303 * default HMAC for cookies, etc... use one of the AUTH HMAC id's 304 * SCTP_HMAC is the HMAC_ID to use 305 * SCTP_SIGNATURE_SIZE is the digest length 306 */ 307 #define SCTP_HMAC SCTP_AUTH_HMAC_ID_SHA1 308 #define SCTP_SIGNATURE_SIZE SCTP_AUTH_DIGEST_LEN_SHA1 309 #define SCTP_SIGNATURE_ALOC_SIZE SCTP_SIGNATURE_SIZE 310 311 /* 312 * the SCTP protocol signature this includes the version number encoded in 313 * the last 4 bits of the signature. 314 */ 315 #define PROTO_SIGNATURE_A 0x30000000 316 #define SCTP_VERSION_NUMBER 0x3 317 318 #define MAX_TSN 0xffffffff 319 320 /* how many executions every N tick's */ 321 #define SCTP_ITERATOR_MAX_AT_ONCE 20 322 323 /* number of clock ticks between iterator executions */ 324 #define SCTP_ITERATOR_TICKS 1 325 326 /* 327 * option: If you comment out the following you will receive the old behavior 328 * of obeying cwnd for the fast retransmit algorithm. With this defined a FR 329 * happens right away with-out waiting for the flightsize to drop below the 330 * cwnd value (which is reduced by the FR to 1/2 the inflight packets). 331 */ 332 #define SCTP_IGNORE_CWND_ON_FR 1 333 334 /* 335 * Adds implementors guide behavior to only use newest highest update in SACK 336 * gap ack's to figure out if you need to stroke a chunk for FR. 337 */ 338 #define SCTP_NO_FR_UNLESS_SEGMENT_SMALLER 1 339 340 /* default max I can burst out after a fast retransmit, 0 disables it */ 341 #define SCTP_DEF_MAX_BURST 4 342 #define SCTP_DEF_HBMAX_BURST 4 343 #define SCTP_DEF_FRMAX_BURST 4 344 345 /* RTO calculation flag to say if it 346 * is safe to determine local lan or not. 347 */ 348 #define SCTP_RTT_FROM_NON_DATA 0 349 #define SCTP_RTT_FROM_DATA 1 350 351 #define PR_SCTP_UNORDERED_FLAG 0x0001 352 353 /* IP hdr (20/40) + 12+2+2 (enet) + sctp common 12 */ 354 #define SCTP_FIRST_MBUF_RESV 68 355 /* Packet transmit states in the sent field */ 356 #define SCTP_DATAGRAM_UNSENT 0 357 #define SCTP_DATAGRAM_SENT 1 358 #define SCTP_DATAGRAM_RESEND1 2 /* not used (in code, but may 359 * hit this value) */ 360 #define SCTP_DATAGRAM_RESEND2 3 /* not used (in code, but may 361 * hit this value) */ 362 #define SCTP_DATAGRAM_RESEND 4 363 #define SCTP_DATAGRAM_ACKED 10010 364 #define SCTP_DATAGRAM_MARKED 20010 365 #define SCTP_FORWARD_TSN_SKIP 30010 366 #define SCTP_DATAGRAM_NR_ACKED 40010 367 368 /* chunk output send from locations */ 369 #define SCTP_OUTPUT_FROM_USR_SEND 0 370 #define SCTP_OUTPUT_FROM_T3 1 371 #define SCTP_OUTPUT_FROM_INPUT_ERROR 2 372 #define SCTP_OUTPUT_FROM_CONTROL_PROC 3 373 #define SCTP_OUTPUT_FROM_SACK_TMR 4 374 #define SCTP_OUTPUT_FROM_SHUT_TMR 5 375 #define SCTP_OUTPUT_FROM_HB_TMR 6 376 #define SCTP_OUTPUT_FROM_SHUT_ACK_TMR 7 377 #define SCTP_OUTPUT_FROM_ASCONF_TMR 8 378 #define SCTP_OUTPUT_FROM_STRRST_TMR 9 379 #define SCTP_OUTPUT_FROM_AUTOCLOSE_TMR 10 380 #define SCTP_OUTPUT_FROM_EARLY_FR_TMR 11 381 #define SCTP_OUTPUT_FROM_STRRST_REQ 12 382 #define SCTP_OUTPUT_FROM_USR_RCVD 13 383 #define SCTP_OUTPUT_FROM_COOKIE_ACK 14 384 #define SCTP_OUTPUT_FROM_DRAIN 15 385 #define SCTP_OUTPUT_FROM_CLOSING 16 386 #define SCTP_OUTPUT_FROM_SOCKOPT 17 387 388 /* SCTP chunk types are moved sctp.h for application (NAT, FW) use */ 389 390 /* align to 32-bit sizes */ 391 #define SCTP_SIZE32(x) ((((x) + 3) >> 2) << 2) 392 393 #define IS_SCTP_CONTROL(a) (((a)->chunk_type != SCTP_DATA) && ((a)->chunk_type != SCTP_IDATA)) 394 #define IS_SCTP_DATA(a) (((a)->chunk_type == SCTP_DATA) || ((a)->chunk_type == SCTP_IDATA)) 395 396 397 /* SCTP parameter types */ 398 /*************0x0000 series*************/ 399 #define SCTP_HEARTBEAT_INFO 0x0001 400 #if defined(__Userspace__) 401 #define SCTP_CONN_ADDRESS 0x0004 402 #endif 403 #define SCTP_IPV4_ADDRESS 0x0005 404 #define SCTP_IPV6_ADDRESS 0x0006 405 #define SCTP_STATE_COOKIE 0x0007 406 #define SCTP_UNRECOG_PARAM 0x0008 407 #define SCTP_COOKIE_PRESERVE 0x0009 408 #define SCTP_HOSTNAME_ADDRESS 0x000b 409 #define SCTP_SUPPORTED_ADDRTYPE 0x000c 410 411 /* RFC 6525 */ 412 #define SCTP_STR_RESET_OUT_REQUEST 0x000d 413 #define SCTP_STR_RESET_IN_REQUEST 0x000e 414 #define SCTP_STR_RESET_TSN_REQUEST 0x000f 415 #define SCTP_STR_RESET_RESPONSE 0x0010 416 #define SCTP_STR_RESET_ADD_OUT_STREAMS 0x0011 417 #define SCTP_STR_RESET_ADD_IN_STREAMS 0x0012 418 419 #define SCTP_MAX_RESET_PARAMS 2 420 #define SCTP_STREAM_RESET_TSN_DELTA 0x1000 421 422 /*************0x4000 series*************/ 423 424 /*************0x8000 series*************/ 425 #define SCTP_ECN_CAPABLE 0x8000 426 427 /* RFC 4895 */ 428 #define SCTP_RANDOM 0x8002 429 #define SCTP_CHUNK_LIST 0x8003 430 #define SCTP_HMAC_LIST 0x8004 431 /* RFC 4820 */ 432 #define SCTP_PAD 0x8005 433 /* RFC 5061 */ 434 #define SCTP_SUPPORTED_CHUNK_EXT 0x8008 435 436 /*************0xC000 series*************/ 437 #define SCTP_PRSCTP_SUPPORTED 0xc000 438 /* RFC 5061 */ 439 #define SCTP_ADD_IP_ADDRESS 0xc001 440 #define SCTP_DEL_IP_ADDRESS 0xc002 441 #define SCTP_ERROR_CAUSE_IND 0xc003 442 #define SCTP_SET_PRIM_ADDR 0xc004 443 #define SCTP_SUCCESS_REPORT 0xc005 444 #define SCTP_ULP_ADAPTATION 0xc006 445 /* behave-nat-draft */ 446 #define SCTP_HAS_NAT_SUPPORT 0xc007 447 #define SCTP_NAT_VTAGS 0xc008 448 449 /* bits for TOS field */ 450 #define SCTP_ECT0_BIT 0x02 451 #define SCTP_ECT1_BIT 0x01 452 #define SCTP_CE_BITS 0x03 453 454 /* below turns off above */ 455 #define SCTP_FLEXIBLE_ADDRESS 0x20 456 #define SCTP_NO_HEARTBEAT 0x40 457 458 /* mask to get sticky */ 459 #define SCTP_STICKY_OPTIONS_MASK 0x0c 460 461 462 /* 463 * SCTP states for internal state machine 464 */ 465 #define SCTP_STATE_EMPTY 0x0000 466 #define SCTP_STATE_INUSE 0x0001 467 #define SCTP_STATE_COOKIE_WAIT 0x0002 468 #define SCTP_STATE_COOKIE_ECHOED 0x0004 469 #define SCTP_STATE_OPEN 0x0008 470 #define SCTP_STATE_SHUTDOWN_SENT 0x0010 471 #define SCTP_STATE_SHUTDOWN_RECEIVED 0x0020 472 #define SCTP_STATE_SHUTDOWN_ACK_SENT 0x0040 473 #define SCTP_STATE_SHUTDOWN_PENDING 0x0080 474 #define SCTP_STATE_CLOSED_SOCKET 0x0100 475 #define SCTP_STATE_ABOUT_TO_BE_FREED 0x0200 476 #define SCTP_STATE_PARTIAL_MSG_LEFT 0x0400 477 #define SCTP_STATE_WAS_ABORTED 0x0800 478 #define SCTP_STATE_IN_ACCEPT_QUEUE 0x1000 479 #define SCTP_STATE_MASK 0x007f 480 481 #define SCTP_GET_STATE(_stcb) \ 482 ((_stcb)->asoc.state & SCTP_STATE_MASK) 483 #define SCTP_SET_STATE(_stcb, _state) \ 484 sctp_set_state(_stcb, _state) 485 #define SCTP_CLEAR_SUBSTATE(_stcb, _substate) \ 486 (_stcb)->asoc.state &= ~(_substate) 487 #define SCTP_ADD_SUBSTATE(_stcb, _substate) \ 488 sctp_add_substate(_stcb, _substate) 489 490 /* SCTP reachability state for each address */ 491 #define SCTP_ADDR_REACHABLE 0x001 492 #define SCTP_ADDR_NO_PMTUD 0x002 493 #define SCTP_ADDR_NOHB 0x004 494 #define SCTP_ADDR_BEING_DELETED 0x008 495 #define SCTP_ADDR_NOT_IN_ASSOC 0x010 496 #define SCTP_ADDR_OUT_OF_SCOPE 0x080 497 #define SCTP_ADDR_UNCONFIRMED 0x200 498 #define SCTP_ADDR_REQ_PRIMARY 0x400 499 /* JRS 5/13/07 - Added potentially failed state for CMT PF */ 500 #define SCTP_ADDR_PF 0x800 501 502 /* bound address types (e.g. valid address types to allow) */ 503 #define SCTP_BOUND_V6 0x01 504 #define SCTP_BOUND_V4 0x02 505 506 /* 507 * what is the default number of mbufs in a chain I allow before switching to 508 * a cluster 509 */ 510 #define SCTP_DEFAULT_MBUFS_IN_CHAIN 5 511 512 /* How long a cookie lives in milli-seconds */ 513 #define SCTP_DEFAULT_COOKIE_LIFE 60000 514 515 /* Maximum the mapping array will grow to (TSN mapping array) */ 516 #define SCTP_MAPPING_ARRAY 512 517 518 /* size of the initial malloc on the mapping array */ 519 #define SCTP_INITIAL_MAPPING_ARRAY 16 520 /* how much we grow the mapping array each call */ 521 #define SCTP_MAPPING_ARRAY_INCR 32 522 523 /* 524 * Here we define the timer types used by the implementation as arguments in 525 * the set/get timer type calls. 526 */ 527 #define SCTP_TIMER_INIT 0 528 #define SCTP_TIMER_RECV 1 529 #define SCTP_TIMER_SEND 2 530 #define SCTP_TIMER_HEARTBEAT 3 531 #define SCTP_TIMER_PMTU 4 532 #define SCTP_TIMER_MAXSHUTDOWN 5 533 #define SCTP_TIMER_SIGNATURE 6 534 /* 535 * number of timer types in the base SCTP structure used in the set/get and 536 * has the base default. 537 */ 538 #define SCTP_NUM_TMRS 7 539 540 /* timer types */ 541 #define SCTP_TIMER_TYPE_NONE 0 542 #define SCTP_TIMER_TYPE_SEND 1 543 #define SCTP_TIMER_TYPE_INIT 2 544 #define SCTP_TIMER_TYPE_RECV 3 545 #define SCTP_TIMER_TYPE_SHUTDOWN 4 546 #define SCTP_TIMER_TYPE_HEARTBEAT 5 547 #define SCTP_TIMER_TYPE_COOKIE 6 548 #define SCTP_TIMER_TYPE_NEWCOOKIE 7 549 #define SCTP_TIMER_TYPE_PATHMTURAISE 8 550 #define SCTP_TIMER_TYPE_SHUTDOWNACK 9 551 #define SCTP_TIMER_TYPE_ASCONF 10 552 #define SCTP_TIMER_TYPE_SHUTDOWNGUARD 11 553 #define SCTP_TIMER_TYPE_AUTOCLOSE 12 554 #define SCTP_TIMER_TYPE_STRRESET 13 555 #define SCTP_TIMER_TYPE_INPKILL 14 556 #define SCTP_TIMER_TYPE_ASOCKILL 15 557 #define SCTP_TIMER_TYPE_ADDR_WQ 16 558 #define SCTP_TIMER_TYPE_PRIM_DELETED 17 559 /* add new timers here - and increment LAST */ 560 #define SCTP_TIMER_TYPE_LAST 18 561 562 #define SCTP_IS_TIMER_TYPE_VALID(t) (((t) > SCTP_TIMER_TYPE_NONE) && \ 563 ((t) < SCTP_TIMER_TYPE_LAST)) 564 565 566 #if defined(__APPLE__) && !defined(__Userspace__) 567 /* Number of ticks to run the main timer at in msec */ 568 #define SCTP_MAIN_TIMER_DEFAULT 10 569 #endif 570 571 /* max number of TSN's dup'd that I will hold */ 572 #define SCTP_MAX_DUP_TSNS 20 573 574 /* 575 * Here we define the types used when setting the retry amounts. 576 */ 577 /* How many drop re-attempts we make on INIT/COOKIE-ECHO */ 578 #define SCTP_RETRY_DROPPED_THRESH 4 579 580 /* 581 * Maxmium number of chunks a single association can have on it. Note that 582 * this is a squishy number since the count can run over this if the user 583 * sends a large message down .. the fragmented chunks don't count until 584 * AFTER the message is on queue.. it would be the next send that blocks 585 * things. This number will get tuned up at boot in the sctp_init and use the 586 * number of clusters as a base. This way high bandwidth environments will 587 * not get impacted by the lower bandwidth sending a bunch of 1 byte chunks 588 */ 589 #define SCTP_ASOC_MAX_CHUNKS_ON_QUEUE 512 590 591 /* 592 * Basically the minimum amount of time before I do a early FR. Making this 593 * value to low will cause duplicate retransmissions. 594 */ 595 #define SCTP_MINFR_MSEC_TIMER 250 596 /* The floor this value is allowed to fall to when starting a timer. */ 597 #define SCTP_MINFR_MSEC_FLOOR 20 598 599 /* init timer def = 1 sec */ 600 #define SCTP_INIT_SEC 1 601 602 /* send timer def = 1 seconds */ 603 #define SCTP_SEND_SEC 1 604 605 /* recv timer def = 200ms */ 606 #define SCTP_RECV_MSEC 200 607 608 /* 30 seconds + RTO (in ms) */ 609 #define SCTP_HB_DEFAULT_MSEC 30000 610 611 /* 612 * This is how long a secret lives, NOT how long a cookie lives how many 613 * ticks the current secret will live. 614 */ 615 #define SCTP_DEFAULT_SECRET_LIFE_SEC 3600 616 617 #define SCTP_RTO_UPPER_BOUND (60000) /* 60 sec in ms */ 618 #define SCTP_RTO_LOWER_BOUND (1000) /* 1 sec is ms */ 619 #define SCTP_RTO_INITIAL (3000) /* 3 sec in ms */ 620 621 622 #define SCTP_INP_KILL_TIMEOUT 20 /* number of ms to retry kill of inpcb */ 623 #define SCTP_ASOC_KILL_TIMEOUT 10 /* number of ms to retry kill of inpcb */ 624 625 #define SCTP_DEF_MAX_INIT 8 626 #define SCTP_DEF_MAX_SEND 10 627 #define SCTP_DEF_MAX_PATH_RTX 5 628 #define SCTP_DEF_PATH_PF_THRESHOLD SCTP_DEF_MAX_PATH_RTX 629 630 #define SCTP_DEF_PMTU_RAISE_SEC 600 /* 10 min between raise attempts */ 631 632 633 /* How many streams I request initially by default */ 634 #define SCTP_OSTREAM_INITIAL 10 635 #define SCTP_ISTREAM_INITIAL 2048 636 637 /* 638 * How many smallest_mtu's need to increase before a window update sack is 639 * sent (should be a power of 2). 640 */ 641 /* Send window update (incr * this > hiwat). Should be a power of 2 */ 642 #define SCTP_MINIMAL_RWND (4096) /* minimal rwnd */ 643 644 #define SCTP_ADDRMAX 16 645 646 /* SCTP DEBUG Switch parameters */ 647 #define SCTP_DEBUG_TIMER1 0x00000001 648 #define SCTP_DEBUG_TIMER2 0x00000002 /* unused */ 649 #define SCTP_DEBUG_TIMER3 0x00000004 /* unused */ 650 #define SCTP_DEBUG_TIMER4 0x00000008 651 #define SCTP_DEBUG_OUTPUT1 0x00000010 652 #define SCTP_DEBUG_OUTPUT2 0x00000020 653 #define SCTP_DEBUG_OUTPUT3 0x00000040 654 #define SCTP_DEBUG_OUTPUT4 0x00000080 655 #define SCTP_DEBUG_UTIL1 0x00000100 656 #define SCTP_DEBUG_UTIL2 0x00000200 /* unused */ 657 #define SCTP_DEBUG_AUTH1 0x00000400 658 #define SCTP_DEBUG_AUTH2 0x00000800 /* unused */ 659 #define SCTP_DEBUG_INPUT1 0x00001000 660 #define SCTP_DEBUG_INPUT2 0x00002000 661 #define SCTP_DEBUG_INPUT3 0x00004000 662 #define SCTP_DEBUG_INPUT4 0x00008000 /* unused */ 663 #define SCTP_DEBUG_ASCONF1 0x00010000 664 #define SCTP_DEBUG_ASCONF2 0x00020000 665 #define SCTP_DEBUG_OUTPUT5 0x00040000 /* unused */ 666 #define SCTP_DEBUG_XXX 0x00080000 /* unused */ 667 #define SCTP_DEBUG_PCB1 0x00100000 668 #define SCTP_DEBUG_PCB2 0x00200000 /* unused */ 669 #define SCTP_DEBUG_PCB3 0x00400000 670 #define SCTP_DEBUG_PCB4 0x00800000 671 #define SCTP_DEBUG_INDATA1 0x01000000 672 #define SCTP_DEBUG_INDATA2 0x02000000 /* unused */ 673 #define SCTP_DEBUG_INDATA3 0x04000000 /* unused */ 674 #define SCTP_DEBUG_CRCOFFLOAD 0x08000000 /* unused */ 675 #define SCTP_DEBUG_USRREQ1 0x10000000 /* unused */ 676 #define SCTP_DEBUG_USRREQ2 0x20000000 /* unused */ 677 #define SCTP_DEBUG_PEEL1 0x40000000 678 #if defined(__Userspace__) 679 #define SCTP_DEBUG_USR 0x80000000 680 #else 681 #define SCTP_DEBUG_XXXXX 0x80000000 /* unused */ 682 #endif 683 #define SCTP_DEBUG_ALL 0x7ff3ffff 684 #define SCTP_DEBUG_NOISY 0x00040000 685 686 /* What sender needs to see to avoid SWS or we consider peers rwnd 0 */ 687 #define SCTP_SWS_SENDER_DEF 1420 688 689 /* 690 * SWS is scaled to the sb_hiwat of the socket. A value of 2 is hiwat/4, 1 691 * would be hiwat/2 etc. 692 */ 693 /* What receiver needs to see in sockbuf or we tell peer its 1 */ 694 #define SCTP_SWS_RECEIVER_DEF 3000 695 696 #define SCTP_INITIAL_CWND 4380 697 698 #define SCTP_DEFAULT_MTU 1500 /* emergency default MTU */ 699 /* amount peer is obligated to have in rwnd or I will abort */ 700 #define SCTP_MIN_RWND 1500 701 702 #define SCTP_DEFAULT_MAXSEGMENT 65535 703 704 #define SCTP_CHUNK_BUFFER_SIZE 512 705 #define SCTP_PARAM_BUFFER_SIZE 512 706 707 /* small chunk store for looking at chunk_list in auth */ 708 #define SCTP_SMALL_CHUNK_STORE 260 709 710 #define SCTP_HOW_MANY_SECRETS 2 /* how many secrets I keep */ 711 712 #define SCTP_NUMBER_OF_SECRETS 8 /* or 8 * 4 = 32 octets */ 713 #define SCTP_SECRET_SIZE 32 /* number of octets in a 256 bits */ 714 715 716 /* 717 * SCTP upper layer notifications 718 */ 719 #define SCTP_NOTIFY_ASSOC_UP 1 720 #define SCTP_NOTIFY_ASSOC_DOWN 2 721 #define SCTP_NOTIFY_INTERFACE_DOWN 3 722 #define SCTP_NOTIFY_INTERFACE_UP 4 723 #define SCTP_NOTIFY_SENT_DG_FAIL 5 724 #define SCTP_NOTIFY_UNSENT_DG_FAIL 6 725 #define SCTP_NOTIFY_SPECIAL_SP_FAIL 7 726 #define SCTP_NOTIFY_ASSOC_LOC_ABORTED 8 727 #define SCTP_NOTIFY_ASSOC_REM_ABORTED 9 728 #define SCTP_NOTIFY_ASSOC_RESTART 10 729 #define SCTP_NOTIFY_PEER_SHUTDOWN 11 730 #define SCTP_NOTIFY_ASCONF_ADD_IP 12 731 #define SCTP_NOTIFY_ASCONF_DELETE_IP 13 732 #define SCTP_NOTIFY_ASCONF_SET_PRIMARY 14 733 #define SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION 15 734 #define SCTP_NOTIFY_INTERFACE_CONFIRMED 16 735 #define SCTP_NOTIFY_STR_RESET_RECV 17 736 #define SCTP_NOTIFY_STR_RESET_SEND 18 737 #define SCTP_NOTIFY_STR_RESET_FAILED_OUT 19 738 #define SCTP_NOTIFY_STR_RESET_FAILED_IN 20 739 #define SCTP_NOTIFY_STR_RESET_DENIED_OUT 21 740 #define SCTP_NOTIFY_STR_RESET_DENIED_IN 22 741 #define SCTP_NOTIFY_AUTH_NEW_KEY 23 742 #define SCTP_NOTIFY_AUTH_FREE_KEY 24 743 #define SCTP_NOTIFY_NO_PEER_AUTH 25 744 #define SCTP_NOTIFY_SENDER_DRY 26 745 #define SCTP_NOTIFY_REMOTE_ERROR 27 746 747 /* This is the value for messages that are NOT completely 748 * copied down where we will start to split the message. 749 * So, with our default, we split only if the piece we 750 * want to take will fill up a full MTU (assuming 751 * a 1500 byte MTU). 752 */ 753 #define SCTP_DEFAULT_SPLIT_POINT_MIN 2904 754 755 /* Maximum length of diagnostic information in error causes */ 756 #define SCTP_DIAG_INFO_LEN 256 757 758 /* ABORT CODES and other tell-tale location 759 * codes are generated by adding the below 760 * to the instance id. 761 */ 762 763 /* File defines */ 764 #define SCTP_FROM_SCTP_INPUT 0x10000000 765 #define SCTP_FROM_SCTP_PCB 0x20000000 766 #define SCTP_FROM_SCTP_INDATA 0x30000000 767 #define SCTP_FROM_SCTP_TIMER 0x40000000 768 #define SCTP_FROM_SCTP_USRREQ 0x50000000 769 #define SCTP_FROM_SCTPUTIL 0x60000000 770 #define SCTP_FROM_SCTP6_USRREQ 0x70000000 771 #define SCTP_FROM_SCTP_ASCONF 0x80000000 772 #define SCTP_FROM_SCTP_OUTPUT 0x90000000 773 #define SCTP_FROM_SCTP_PEELOFF 0xa0000000 774 #define SCTP_FROM_SCTP_SYSCTL 0xb0000000 775 #define SCTP_FROM_SCTP_CC_FUNCTIONS 0xc0000000 776 777 /* Location ID's */ 778 #define SCTP_LOC_1 0x00000001 779 #define SCTP_LOC_2 0x00000002 780 #define SCTP_LOC_3 0x00000003 781 #define SCTP_LOC_4 0x00000004 782 #define SCTP_LOC_5 0x00000005 783 #define SCTP_LOC_6 0x00000006 784 #define SCTP_LOC_7 0x00000007 785 #define SCTP_LOC_8 0x00000008 786 #define SCTP_LOC_9 0x00000009 787 #define SCTP_LOC_10 0x0000000a 788 #define SCTP_LOC_11 0x0000000b 789 #define SCTP_LOC_12 0x0000000c 790 #define SCTP_LOC_13 0x0000000d 791 #define SCTP_LOC_14 0x0000000e 792 #define SCTP_LOC_15 0x0000000f 793 #define SCTP_LOC_16 0x00000010 794 #define SCTP_LOC_17 0x00000011 795 #define SCTP_LOC_18 0x00000012 796 #define SCTP_LOC_19 0x00000013 797 #define SCTP_LOC_20 0x00000014 798 #define SCTP_LOC_21 0x00000015 799 #define SCTP_LOC_22 0x00000016 800 #define SCTP_LOC_23 0x00000017 801 #define SCTP_LOC_24 0x00000018 802 #define SCTP_LOC_25 0x00000019 803 #define SCTP_LOC_26 0x0000001a 804 #define SCTP_LOC_27 0x0000001b 805 #define SCTP_LOC_28 0x0000001c 806 #define SCTP_LOC_29 0x0000001d 807 #define SCTP_LOC_30 0x0000001e 808 #define SCTP_LOC_31 0x0000001f 809 #define SCTP_LOC_32 0x00000020 810 #define SCTP_LOC_33 0x00000021 811 #define SCTP_LOC_34 0x00000022 812 #define SCTP_LOC_35 0x00000023 813 #define SCTP_LOC_36 0x00000024 814 #define SCTP_LOC_37 0x00000025 815 816 /* Free assoc codes */ 817 #define SCTP_NORMAL_PROC 0 818 #define SCTP_PCBFREE_NOFORCE 1 819 #define SCTP_PCBFREE_FORCE 2 820 821 /* From codes for adding addresses */ 822 #define SCTP_ADDR_IS_CONFIRMED 8 823 #define SCTP_ADDR_DYNAMIC_ADDED 6 824 #define SCTP_IN_COOKIE_PROC 100 825 #define SCTP_ALLOC_ASOC 1 826 #define SCTP_LOAD_ADDR_2 2 827 #define SCTP_LOAD_ADDR_3 3 828 #define SCTP_LOAD_ADDR_4 4 829 #define SCTP_LOAD_ADDR_5 5 830 831 #define SCTP_DONOT_SETSCOPE 0 832 #define SCTP_DO_SETSCOPE 1 833 834 835 /* This value determines the default for when 836 * we try to add more on the send queue., if 837 * there is room. This prevents us from cycling 838 * into the copy_resume routine to often if 839 * we have not got enough space to add a decent 840 * enough size message. Note that if we have enough 841 * space to complete the message copy we will always 842 * add to the message, no matter what the size. Its 843 * only when we reach the point that we have some left 844 * to add, there is only room for part of it that we 845 * will use this threshold. Its also a sysctl. 846 */ 847 #define SCTP_DEFAULT_ADD_MORE 1452 848 849 #ifndef SCTP_PCBHASHSIZE 850 /* default number of association hash buckets in each endpoint */ 851 #define SCTP_PCBHASHSIZE 256 852 #endif 853 #ifndef SCTP_TCBHASHSIZE 854 #define SCTP_TCBHASHSIZE 1024 855 #endif 856 857 #ifndef SCTP_CHUNKQUEUE_SCALE 858 #define SCTP_CHUNKQUEUE_SCALE 10 859 #endif 860 861 #if defined(__FreeBSD__) && !defined(__Userspace__) 862 /* clock variance is 1 ms */ 863 #define SCTP_CLOCK_GRANULARITY 1 864 #else 865 /* clock variance is 10 ms */ 866 #define SCTP_CLOCK_GRANULARITY 10 867 #endif 868 #define IP_HDR_SIZE 40 /* we use the size of a IP6 header here this 869 * detracts a small amount for ipv4 but it 870 * simplifies the ipv6 addition */ 871 872 /* Argument magic number for sctp_inpcb_free() */ 873 874 /* third argument */ 875 #define SCTP_CALLED_DIRECTLY_NOCMPSET 0 876 #define SCTP_CALLED_AFTER_CMPSET_OFCLOSE 1 877 #define SCTP_CALLED_FROM_INPKILL_TIMER 2 878 /* second argument */ 879 #define SCTP_FREE_SHOULD_USE_ABORT 1 880 #define SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE 0 881 882 #ifndef IPPROTO_SCTP 883 #define IPPROTO_SCTP 132 /* the Official IANA number :-) */ 884 #endif /* !IPPROTO_SCTP */ 885 886 #define SCTP_MAX_DATA_BUNDLING 256 887 888 /* modular comparison */ 889 /* See RFC 1982 for details. */ 890 #define SCTP_UINT16_GT(a, b) (((a < b) && ((uint16_t)(b - a) > (1U<<15))) || \ 891 ((a > b) && ((uint16_t)(a - b) < (1U<<15)))) 892 #define SCTP_UINT16_GE(a, b) (SCTP_UINT16_GT(a, b) || (a == b)) 893 #define SCTP_UINT32_GT(a, b) (((a < b) && ((uint32_t)(b - a) > (1U<<31))) || \ 894 ((a > b) && ((uint32_t)(a - b) < (1U<<31)))) 895 #define SCTP_UINT32_GE(a, b) (SCTP_UINT32_GT(a, b) || (a == b)) 896 897 #define SCTP_SSN_GT(a, b) SCTP_UINT16_GT(a, b) 898 #define SCTP_SSN_GE(a, b) SCTP_UINT16_GE(a, b) 899 #define SCTP_TSN_GT(a, b) SCTP_UINT32_GT(a, b) 900 #define SCTP_TSN_GE(a, b) SCTP_UINT32_GE(a, b) 901 #define SCTP_MID_GT(i, a, b) (((i) == 1) ? SCTP_UINT32_GT(a, b) : SCTP_UINT16_GT((uint16_t)a, (uint16_t)b)) 902 #define SCTP_MID_GE(i, a, b) (((i) == 1) ? SCTP_UINT32_GE(a, b) : SCTP_UINT16_GE((uint16_t)a, (uint16_t)b)) 903 #define SCTP_MID_EQ(i, a, b) (((i) == 1) ? a == b : (uint16_t)a == (uint16_t)b) 904 905 /* Mapping array manipulation routines */ 906 #define SCTP_IS_TSN_PRESENT(arry, gap) ((arry[(gap >> 3)] >> (gap & 0x07)) & 0x01) 907 #define SCTP_SET_TSN_PRESENT(arry, gap) (arry[(gap >> 3)] |= (0x01 << ((gap & 0x07)))) 908 #define SCTP_UNSET_TSN_PRESENT(arry, gap) (arry[(gap >> 3)] &= ((~(0x01 << ((gap & 0x07)))) & 0xff)) 909 #define SCTP_CALC_TSN_TO_GAP(gap, tsn, mapping_tsn) do { \ 910 if (tsn >= mapping_tsn) { \ 911 gap = tsn - mapping_tsn; \ 912 } else { \ 913 gap = (MAX_TSN - mapping_tsn) + tsn + 1; \ 914 } \ 915 } while (0) 916 917 918 #define SCTP_RETRAN_DONE -1 919 #define SCTP_RETRAN_EXIT -2 920 921 /* 922 * This value defines the number of vtag block time wait entry's per list 923 * element. Each entry will take 2 4 byte ints (and of course the overhead 924 * of the next pointer as well). Using 15 as an example will yield * ((8 * 925 * 15) + 8) or 128 bytes of overhead for each timewait block that gets 926 * initialized. Increasing it to 31 would yield 256 bytes per block. 927 */ 928 #define SCTP_NUMBER_IN_VTAG_BLOCK 15 929 /* 930 * If we use the STACK option, we have an array of this size head pointers. 931 * This array is mod'd the with the size to find which bucket and then all 932 * entries must be searched to see if the tag is in timed wait. If so we 933 * reject it. 934 */ 935 #define SCTP_STACK_VTAG_HASH_SIZE 32 936 937 /* 938 * Number of seconds of time wait for a vtag. 939 */ 940 #define SCTP_TIME_WAIT 60 941 942 /* How many micro seconds is the cutoff from 943 * local lan type rtt's 944 */ 945 /* 946 * We allow 900us for the rtt. 947 */ 948 #define SCTP_LOCAL_LAN_RTT 900 949 #define SCTP_LAN_UNKNOWN 0 950 #define SCTP_LAN_LOCAL 1 951 #define SCTP_LAN_INTERNET 2 952 953 #define SCTP_SEND_BUFFER_SPLITTING 0x00000001 954 #define SCTP_RECV_BUFFER_SPLITTING 0x00000002 955 956 /* The system retains a cache of free chunks such to 957 * cut down on calls the memory allocation system. There 958 * is a per association limit of free items and a overall 959 * system limit. If either one gets hit then the resource 960 * stops being cached. 961 */ 962 963 #define SCTP_DEF_ASOC_RESC_LIMIT 10 964 #define SCTP_DEF_SYSTEM_RESC_LIMIT 1000 965 966 /*- 967 * defines for socket lock states. 968 * Used by __APPLE__ 969 */ 970 #define SCTP_SO_LOCKED 1 971 #define SCTP_SO_NOT_LOCKED 0 972 973 974 /*- 975 * For address locks, do we hold the lock? 976 */ 977 #define SCTP_ADDR_LOCKED 1 978 #define SCTP_ADDR_NOT_LOCKED 0 979 980 #define IN4_ISPRIVATE_ADDRESS(a) \ 981 ((((uint8_t *)&(a)->s_addr)[0] == 10) || \ 982 ((((uint8_t *)&(a)->s_addr)[0] == 172) && \ 983 (((uint8_t *)&(a)->s_addr)[1] >= 16) && \ 984 (((uint8_t *)&(a)->s_addr)[1] <= 32)) || \ 985 ((((uint8_t *)&(a)->s_addr)[0] == 192) && \ 986 (((uint8_t *)&(a)->s_addr)[1] == 168))) 987 988 #define IN4_ISLOOPBACK_ADDRESS(a) \ 989 (((uint8_t *)&(a)->s_addr)[0] == 127) 990 991 #define IN4_ISLINKLOCAL_ADDRESS(a) \ 992 ((((uint8_t *)&(a)->s_addr)[0] == 169) && \ 993 (((uint8_t *)&(a)->s_addr)[1] == 254)) 994 995 /* Maximum size of optval for IPPROTO_SCTP level socket options. */ 996 #define SCTP_SOCKET_OPTION_LIMIT (64 * 1024) 997 998 #if defined(__Userspace__) 999 #if defined(_WIN32) 1000 #define SCTP_GETTIME_TIMEVAL(x) getwintimeofday(x) 1001 #define SCTP_GETPTIME_TIMEVAL(x) getwintimeofday(x) /* this doesn't seem to ever be used.. */ 1002 #else 1003 #define SCTP_GETTIME_TIMEVAL(x) gettimeofday(x, NULL) 1004 #define SCTP_GETPTIME_TIMEVAL(x) gettimeofday(x, NULL) 1005 #endif 1006 #endif 1007 1008 #if defined(_KERNEL) 1009 #define SCTP_GETTIME_TIMEVAL(x) (getmicrouptime(x)) 1010 #define SCTP_GETPTIME_TIMEVAL(x) (microuptime(x)) 1011 #endif 1012 1013 #if defined(_KERNEL) || defined(__Userspace__) 1014 #define sctp_sowwakeup(inp, so) \ 1015 do { \ 1016 if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \ 1017 inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEOUTPUT; \ 1018 } else { \ 1019 sowwakeup(so); \ 1020 } \ 1021 } while (0) 1022 1023 #if defined(__FreeBSD__) || defined(_WIN32) || defined(__Userspace__) 1024 #define sctp_sowwakeup_locked(inp, so) \ 1025 do { \ 1026 if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \ 1027 SOCKBUF_UNLOCK(&((so)->so_snd)); \ 1028 inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEOUTPUT; \ 1029 } else { \ 1030 sowwakeup_locked(so); \ 1031 } \ 1032 } while (0) 1033 #else 1034 #define sctp_sowwakeup_locked(inp, so) \ 1035 do { \ 1036 if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \ 1037 SOCKBUF_UNLOCK(&((so)->so_snd)); \ 1038 inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEOUTPUT; \ 1039 } else { \ 1040 sowwakeup(so); \ 1041 } \ 1042 } while (0) 1043 #endif 1044 1045 #define sctp_sorwakeup(inp, so) \ 1046 do { \ 1047 if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \ 1048 inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEINPUT; \ 1049 } else { \ 1050 sorwakeup(so); \ 1051 } \ 1052 } while (0) 1053 1054 #if defined(__FreeBSD__) || defined(_WIN32) || defined(__Userspace__) 1055 #define sctp_sorwakeup_locked(inp, so) \ 1056 do { \ 1057 if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \ 1058 inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEINPUT; \ 1059 SOCKBUF_UNLOCK(&((so)->so_rcv)); \ 1060 } else { \ 1061 sorwakeup_locked(so); \ 1062 } \ 1063 } while (0) 1064 #else 1065 1066 #define sctp_sorwakeup_locked(inp, so) \ 1067 do { \ 1068 if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \ 1069 inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEINPUT; \ 1070 SOCKBUF_UNLOCK(&((so)->so_rcv)); \ 1071 } else { \ 1072 sorwakeup(so); \ 1073 } \ 1074 } while (0) 1075 #endif 1076 1077 #endif /* _KERNEL || __Userspace__*/ 1078 #endif 1079