1 /*- 2 * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved. 3 * Copyright (c) 2008-2011, by Randall Stewart. All rights reserved. 4 * Copyright (c) 2008-2011, by Michael Tuexen. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are met: 8 * 9 * a) Redistributions of source code must retain the above copyright notice, 10 * this list of conditions and the following disclaimer. 11 * 12 * b) Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in 14 * the documentation and/or other materials provided with the distribution. 15 * 16 * c) Neither the name of Cisco Systems, Inc. nor the names of its 17 * contributors may be used to endorse or promote products derived 18 * from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 30 * THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* $KAME: sctp_constants.h,v 1.17 2005/03/06 16:04:17 itojun Exp $ */ 34 35 #include <sys/cdefs.h> 36 __FBSDID("$FreeBSD$"); 37 38 #ifndef __sctp_constants_h__ 39 #define __sctp_constants_h__ 40 41 /* IANA assigned port number for SCTP over UDP encapsulation */ 42 /* For freebsd we cannot bind the port at 43 * startup. Otherwise what will happen is 44 * we really won't be bound. The user must 45 * put it into the sysctl... or we need 46 * to build a special timer for this to allow 47 * us to wait 1 second or so after the system 48 * comes up. 49 */ 50 #define SCTP_OVER_UDP_TUNNELING_PORT 0 51 /* Number of packets to get before sack sent by default */ 52 #define SCTP_DEFAULT_SACK_FREQ 2 53 54 /* Address limit - This variable is calculated 55 * based on an 65535 byte max ip packet. We take out 100 bytes 56 * for the cookie, 40 bytes for a v6 header and 32 57 * bytes for the init structure. A second init structure 58 * for the init-ack and then finally a third one for the 59 * imbedded init. This yeilds 100+40+(3 * 32) = 236 bytes. 60 * This leaves 65299 bytes for addresses. We throw out the 299 bytes. 61 * Now whatever we send in the INIT() we need to allow to get back in the 62 * INIT-ACK plus all the values from INIT and INIT-ACK 63 * listed in the cookie. Plus we need some overhead for 64 * maybe copied parameters in the COOKIE. If we 65 * allow 1080 addresses, and each side has 1080 V6 addresses 66 * that will be 21600 bytes. In the INIT-ACK we will 67 * see the INIT-ACK 21600 + 43200 in the cookie. This leaves 68 * about 500 bytes slack for misc things in the cookie. 69 */ 70 #define SCTP_ADDRESS_LIMIT 1080 71 72 /* We need at least 2k of space for us, inits 73 * larger than that lets abort. 74 */ 75 #define SCTP_LARGEST_INIT_ACCEPTED (65535 - 2048) 76 77 /* Number of addresses where we just skip the counting */ 78 #define SCTP_COUNT_LIMIT 40 79 80 #define SCTP_ZERO_COPY_TICK_DELAY (((100 * hz) + 999) / 1000) 81 #define SCTP_ZERO_COPY_SENDQ_TICK_DELAY (((100 * hz) + 999) / 1000) 82 83 /* Number of ticks to delay before running 84 * iterator on an address change. 85 */ 86 #define SCTP_ADDRESS_TICK_DELAY 2 87 88 #define SCTP_VERSION_STRING "KAME-BSD 1.1" 89 /* #define SCTP_AUDITING_ENABLED 1 used for debug/auditing */ 90 #define SCTP_AUDIT_SIZE 256 91 92 93 #define SCTP_KTRHEAD_NAME "sctp_iterator" 94 #define SCTP_KTHREAD_PAGES 0 95 96 #define SCTP_MCORE_NAME "sctp_core_worker" 97 98 99 /* If you support Multi-VRF how big to 100 * make the initial array of VRF's to. 101 */ 102 #define SCTP_DEFAULT_VRF_SIZE 4 103 104 /* constants for rto calc */ 105 #define sctp_align_safe_nocopy 0 106 #define sctp_align_unsafe_makecopy 1 107 108 /* JRS - Values defined for the HTCP algorithm */ 109 #define ALPHA_BASE (1<<7) /* 1.0 with shift << 7 */ 110 #define BETA_MIN (1<<6) /* 0.5 with shift << 7 */ 111 #define BETA_MAX 102 /* 0.8 with shift << 7 */ 112 113 /* Places that CWND log can happen from */ 114 #define SCTP_CWND_LOG_FROM_FR 1 115 #define SCTP_CWND_LOG_FROM_RTX 2 116 #define SCTP_CWND_LOG_FROM_BRST 3 117 #define SCTP_CWND_LOG_FROM_SS 4 118 #define SCTP_CWND_LOG_FROM_CA 5 119 #define SCTP_CWND_LOG_FROM_SAT 6 120 #define SCTP_BLOCK_LOG_INTO_BLK 7 121 #define SCTP_BLOCK_LOG_OUTOF_BLK 8 122 #define SCTP_BLOCK_LOG_CHECK 9 123 #define SCTP_STR_LOG_FROM_INTO_STRD 10 124 #define SCTP_STR_LOG_FROM_IMMED_DEL 11 125 #define SCTP_STR_LOG_FROM_INSERT_HD 12 126 #define SCTP_STR_LOG_FROM_INSERT_MD 13 127 #define SCTP_STR_LOG_FROM_INSERT_TL 14 128 #define SCTP_STR_LOG_FROM_MARK_TSN 15 129 #define SCTP_STR_LOG_FROM_EXPRS_DEL 16 130 #define SCTP_FR_LOG_BIGGEST_TSNS 17 131 #define SCTP_FR_LOG_STRIKE_TEST 18 132 #define SCTP_FR_LOG_STRIKE_CHUNK 19 133 #define SCTP_FR_T3_TIMEOUT 20 134 #define SCTP_MAP_PREPARE_SLIDE 21 135 #define SCTP_MAP_SLIDE_FROM 22 136 #define SCTP_MAP_SLIDE_RESULT 23 137 #define SCTP_MAP_SLIDE_CLEARED 24 138 #define SCTP_MAP_SLIDE_NONE 25 139 #define SCTP_FR_T3_MARK_TIME 26 140 #define SCTP_FR_T3_MARKED 27 141 #define SCTP_FR_T3_STOPPED 28 142 #define SCTP_FR_MARKED 30 143 #define SCTP_CWND_LOG_NOADV_SS 31 144 #define SCTP_CWND_LOG_NOADV_CA 32 145 #define SCTP_MAX_BURST_APPLIED 33 146 #define SCTP_MAX_IFP_APPLIED 34 147 #define SCTP_MAX_BURST_ERROR_STOP 35 148 #define SCTP_INCREASE_PEER_RWND 36 149 #define SCTP_DECREASE_PEER_RWND 37 150 #define SCTP_SET_PEER_RWND_VIA_SACK 38 151 #define SCTP_LOG_MBCNT_INCREASE 39 152 #define SCTP_LOG_MBCNT_DECREASE 40 153 #define SCTP_LOG_MBCNT_CHKSET 41 154 #define SCTP_LOG_NEW_SACK 42 155 #define SCTP_LOG_TSN_ACKED 43 156 #define SCTP_LOG_TSN_REVOKED 44 157 #define SCTP_LOG_LOCK_TCB 45 158 #define SCTP_LOG_LOCK_INP 46 159 #define SCTP_LOG_LOCK_SOCK 47 160 #define SCTP_LOG_LOCK_SOCKBUF_R 48 161 #define SCTP_LOG_LOCK_SOCKBUF_S 49 162 #define SCTP_LOG_LOCK_CREATE 50 163 #define SCTP_LOG_INITIAL_RTT 51 164 #define SCTP_LOG_RTTVAR 52 165 #define SCTP_LOG_SBALLOC 53 166 #define SCTP_LOG_SBFREE 54 167 #define SCTP_LOG_SBRESULT 55 168 #define SCTP_FR_DUPED 56 169 #define SCTP_FR_MARKED_EARLY 57 170 #define SCTP_FR_CWND_REPORT 58 171 #define SCTP_FR_CWND_REPORT_START 59 172 #define SCTP_FR_CWND_REPORT_STOP 60 173 #define SCTP_CWND_LOG_FROM_SEND 61 174 #define SCTP_CWND_INITIALIZATION 62 175 #define SCTP_CWND_LOG_FROM_T3 63 176 #define SCTP_CWND_LOG_FROM_SACK 64 177 #define SCTP_CWND_LOG_NO_CUMACK 65 178 #define SCTP_CWND_LOG_FROM_RESEND 66 179 #define SCTP_FR_LOG_CHECK_STRIKE 67 180 #define SCTP_SEND_NOW_COMPLETES 68 181 #define SCTP_CWND_LOG_FILL_OUTQ_CALLED 69 182 #define SCTP_CWND_LOG_FILL_OUTQ_FILLS 70 183 #define SCTP_LOG_FREE_SENT 71 184 #define SCTP_NAGLE_APPLIED 72 185 #define SCTP_NAGLE_SKIPPED 73 186 #define SCTP_WAKESND_FROM_SACK 74 187 #define SCTP_WAKESND_FROM_FWDTSN 75 188 #define SCTP_NOWAKE_FROM_SACK 76 189 #define SCTP_CWNDLOG_PRESEND 77 190 #define SCTP_CWNDLOG_ENDSEND 78 191 #define SCTP_AT_END_OF_SACK 79 192 #define SCTP_REASON_FOR_SC 80 193 #define SCTP_BLOCK_LOG_INTO_BLKA 81 194 #define SCTP_ENTER_USER_RECV 82 195 #define SCTP_USER_RECV_SACKS 83 196 #define SCTP_SORECV_BLOCKSA 84 197 #define SCTP_SORECV_BLOCKSB 85 198 #define SCTP_SORECV_DONE 86 199 #define SCTP_SACK_RWND_UPDATE 87 200 #define SCTP_SORECV_ENTER 88 201 #define SCTP_SORECV_ENTERPL 89 202 #define SCTP_MBUF_INPUT 90 203 #define SCTP_MBUF_IALLOC 91 204 #define SCTP_MBUF_IFREE 92 205 #define SCTP_MBUF_ICOPY 93 206 #define SCTP_MBUF_SPLIT 94 207 #define SCTP_SORCV_FREECTL 95 208 #define SCTP_SORCV_DOESCPY 96 209 #define SCTP_SORCV_DOESLCK 97 210 #define SCTP_SORCV_DOESADJ 98 211 #define SCTP_SORCV_BOTWHILE 99 212 #define SCTP_SORCV_PASSBF 100 213 #define SCTP_SORCV_ADJD 101 214 #define SCTP_UNKNOWN_MAX 102 215 #define SCTP_RANDY_STUFF 103 216 #define SCTP_RANDY_STUFF1 104 217 #define SCTP_STRMOUT_LOG_ASSIGN 105 218 #define SCTP_STRMOUT_LOG_SEND 106 219 #define SCTP_FLIGHT_LOG_DOWN_CA 107 220 #define SCTP_FLIGHT_LOG_UP 108 221 #define SCTP_FLIGHT_LOG_DOWN_GAP 109 222 #define SCTP_FLIGHT_LOG_DOWN_RSND 110 223 #define SCTP_FLIGHT_LOG_UP_RSND 111 224 #define SCTP_FLIGHT_LOG_DOWN_RSND_TO 112 225 #define SCTP_FLIGHT_LOG_DOWN_WP 113 226 #define SCTP_FLIGHT_LOG_UP_REVOKE 114 227 #define SCTP_FLIGHT_LOG_DOWN_PDRP 115 228 #define SCTP_FLIGHT_LOG_DOWN_PMTU 116 229 #define SCTP_SACK_LOG_NORMAL 117 230 #define SCTP_SACK_LOG_EXPRESS 118 231 #define SCTP_MAP_TSN_ENTERS 119 232 #define SCTP_THRESHOLD_CLEAR 120 233 #define SCTP_THRESHOLD_INCR 121 234 #define SCTP_FLIGHT_LOG_DWN_WP_FWD 122 235 #define SCTP_FWD_TSN_CHECK 123 236 #define SCTP_LOG_MAX_TYPES 124 237 /* 238 * To turn on various logging, you must first enable 'options KTR' and 239 * you might want to bump the entires 'options KTR_ENTRIES=80000'. 240 * To get something to log you define one of the logging defines. 241 * (see LINT). 242 * 243 * This gets the compile in place, but you still need to turn the 244 * logging flag on too in the sysctl (see in sctp.h). 245 */ 246 247 #define SCTP_LOG_EVENT_UNKNOWN 0 248 #define SCTP_LOG_EVENT_CWND 1 249 #define SCTP_LOG_EVENT_BLOCK 2 250 #define SCTP_LOG_EVENT_STRM 3 251 #define SCTP_LOG_EVENT_FR 4 252 #define SCTP_LOG_EVENT_MAP 5 253 #define SCTP_LOG_EVENT_MAXBURST 6 254 #define SCTP_LOG_EVENT_RWND 7 255 #define SCTP_LOG_EVENT_MBCNT 8 256 #define SCTP_LOG_EVENT_SACK 9 257 #define SCTP_LOG_LOCK_EVENT 10 258 #define SCTP_LOG_EVENT_RTT 11 259 #define SCTP_LOG_EVENT_SB 12 260 #define SCTP_LOG_EVENT_NAGLE 13 261 #define SCTP_LOG_EVENT_WAKE 14 262 #define SCTP_LOG_MISC_EVENT 15 263 #define SCTP_LOG_EVENT_CLOSE 16 264 #define SCTP_LOG_EVENT_MBUF 17 265 #define SCTP_LOG_CHUNK_PROC 18 266 #define SCTP_LOG_ERROR_RET 19 267 268 #define SCTP_LOG_MAX_EVENT 20 269 270 #define SCTP_LOCK_UNKNOWN 2 271 272 273 /* number of associations by default for zone allocation */ 274 #define SCTP_MAX_NUM_OF_ASOC 40000 275 /* how many addresses per assoc remote and local */ 276 #define SCTP_SCALE_FOR_ADDR 2 277 278 /* default AUTO_ASCONF mode enable(1)/disable(0) value (sysctl) */ 279 #define SCTP_DEFAULT_AUTO_ASCONF 1 280 281 /* default MULTIPLE_ASCONF mode enable(1)/disable(0) value (sysctl) */ 282 #define SCTP_DEFAULT_MULTIPLE_ASCONFS 0 283 284 /* default MOBILITY_BASE mode enable(1)/disable(0) value (sysctl) */ 285 #define SCTP_DEFAULT_MOBILITY_BASE 0 286 287 /* default MOBILITY_FASTHANDOFF mode enable(1)/disable(0) value (sysctl) */ 288 #define SCTP_DEFAULT_MOBILITY_FASTHANDOFF 0 289 290 /* 291 * Theshold for rwnd updates, we have to read (sb_hiwat >> 292 * SCTP_RWND_HIWAT_SHIFT) before we will look to see if we need to send a 293 * window update sack. When we look, we compare the last rwnd we sent vs the 294 * current rwnd. It too must be greater than this value. Using 3 divdes the 295 * hiwat by 8, so for 200k rwnd we need to read 24k. For a 64k rwnd we need 296 * to read 8k. This seems about right.. I hope :-D.. we do set a 297 * min of a MTU on it so if the rwnd is real small we will insist 298 * on a full MTU of 1500 bytes. 299 */ 300 #define SCTP_RWND_HIWAT_SHIFT 3 301 302 /* How much of the rwnd must the 303 * message be taking up to start partial delivery. 304 * We calculate this by shifing the hi_water (recv_win) 305 * left the following .. set to 1, when a message holds 306 * 1/2 the rwnd. If we set it to 2 when a message holds 307 * 1/4 the rwnd...etc.. 308 */ 309 310 #define SCTP_PARTIAL_DELIVERY_SHIFT 1 311 312 /* 313 * default HMAC for cookies, etc... use one of the AUTH HMAC id's 314 * SCTP_HMAC is the HMAC_ID to use 315 * SCTP_SIGNATURE_SIZE is the digest length 316 */ 317 #define SCTP_HMAC SCTP_AUTH_HMAC_ID_SHA1 318 #define SCTP_SIGNATURE_SIZE SCTP_AUTH_DIGEST_LEN_SHA1 319 #define SCTP_SIGNATURE_ALOC_SIZE SCTP_SIGNATURE_SIZE 320 321 /* 322 * the SCTP protocol signature this includes the version number encoded in 323 * the last 4 bits of the signature. 324 */ 325 #define PROTO_SIGNATURE_A 0x30000000 326 #define SCTP_VERSION_NUMBER 0x3 327 328 #define MAX_TSN 0xffffffff 329 330 /* how many executions every N tick's */ 331 #define SCTP_ITERATOR_MAX_AT_ONCE 20 332 333 /* number of clock ticks between iterator executions */ 334 #define SCTP_ITERATOR_TICKS 1 335 336 /* 337 * option: If you comment out the following you will receive the old behavior 338 * of obeying cwnd for the fast retransmit algorithm. With this defined a FR 339 * happens right away with-out waiting for the flightsize to drop below the 340 * cwnd value (which is reduced by the FR to 1/2 the inflight packets). 341 */ 342 #define SCTP_IGNORE_CWND_ON_FR 1 343 344 /* 345 * Adds implementors guide behavior to only use newest highest update in SACK 346 * gap ack's to figure out if you need to stroke a chunk for FR. 347 */ 348 #define SCTP_NO_FR_UNLESS_SEGMENT_SMALLER 1 349 350 /* default max I can burst out after a fast retransmit, 0 disables it */ 351 #define SCTP_DEF_MAX_BURST 0 352 #define SCTP_DEF_HBMAX_BURST 4 353 #define SCTP_DEF_FRMAX_BURST 4 354 355 /* RTO calculation flag to say if it 356 * is safe to determine local lan or not. 357 */ 358 #define SCTP_RTT_FROM_NON_DATA 0 359 #define SCTP_RTT_FROM_DATA 1 360 361 362 /* IP hdr (20/40) + 12+2+2 (enet) + sctp common 12 */ 363 #define SCTP_FIRST_MBUF_RESV 68 364 /* Packet transmit states in the sent field */ 365 #define SCTP_DATAGRAM_UNSENT 0 366 #define SCTP_DATAGRAM_SENT 1 367 #define SCTP_DATAGRAM_RESEND1 2 /* not used (in code, but may 368 * hit this value) */ 369 #define SCTP_DATAGRAM_RESEND2 3 /* not used (in code, but may 370 * hit this value) */ 371 #define SCTP_DATAGRAM_RESEND 4 372 #define SCTP_DATAGRAM_ACKED 10010 373 #define SCTP_DATAGRAM_MARKED 20010 374 #define SCTP_FORWARD_TSN_SKIP 30010 375 376 /* chunk output send from locations */ 377 #define SCTP_OUTPUT_FROM_USR_SEND 0 378 #define SCTP_OUTPUT_FROM_T3 1 379 #define SCTP_OUTPUT_FROM_INPUT_ERROR 2 380 #define SCTP_OUTPUT_FROM_CONTROL_PROC 3 381 #define SCTP_OUTPUT_FROM_SACK_TMR 4 382 #define SCTP_OUTPUT_FROM_SHUT_TMR 5 383 #define SCTP_OUTPUT_FROM_HB_TMR 6 384 #define SCTP_OUTPUT_FROM_SHUT_ACK_TMR 7 385 #define SCTP_OUTPUT_FROM_ASCONF_TMR 8 386 #define SCTP_OUTPUT_FROM_STRRST_TMR 9 387 #define SCTP_OUTPUT_FROM_AUTOCLOSE_TMR 10 388 #define SCTP_OUTPUT_FROM_EARLY_FR_TMR 11 389 #define SCTP_OUTPUT_FROM_STRRST_REQ 12 390 #define SCTP_OUTPUT_FROM_USR_RCVD 13 391 #define SCTP_OUTPUT_FROM_COOKIE_ACK 14 392 #define SCTP_OUTPUT_FROM_DRAIN 15 393 #define SCTP_OUTPUT_FROM_CLOSING 16 394 #define SCTP_OUTPUT_FROM_SOCKOPT 17 395 396 /* SCTP chunk types are moved sctp.h for application (NAT, FW) use */ 397 398 /* align to 32-bit sizes */ 399 #define SCTP_SIZE32(x) ((((x)+3) >> 2) << 2) 400 401 #define IS_SCTP_CONTROL(a) ((a)->chunk_type != SCTP_DATA) 402 #define IS_SCTP_DATA(a) ((a)->chunk_type == SCTP_DATA) 403 404 405 /* SCTP parameter types */ 406 /*************0x0000 series*************/ 407 #define SCTP_HEARTBEAT_INFO 0x0001 408 #define SCTP_IPV4_ADDRESS 0x0005 409 #define SCTP_IPV6_ADDRESS 0x0006 410 #define SCTP_STATE_COOKIE 0x0007 411 #define SCTP_UNRECOG_PARAM 0x0008 412 #define SCTP_COOKIE_PRESERVE 0x0009 413 #define SCTP_HOSTNAME_ADDRESS 0x000b 414 #define SCTP_SUPPORTED_ADDRTYPE 0x000c 415 416 /* draft-ietf-stewart-tsvwg-strreset-xxx */ 417 #define SCTP_STR_RESET_OUT_REQUEST 0x000d 418 #define SCTP_STR_RESET_IN_REQUEST 0x000e 419 #define SCTP_STR_RESET_TSN_REQUEST 0x000f 420 #define SCTP_STR_RESET_RESPONSE 0x0010 421 #define SCTP_STR_RESET_ADD_STREAMS 0x0011 422 423 #define SCTP_MAX_RESET_PARAMS 2 424 #define SCTP_STREAM_RESET_TSN_DELTA 0x1000 425 426 /*************0x4000 series*************/ 427 428 /*************0x8000 series*************/ 429 #define SCTP_ECN_CAPABLE 0x8000 430 431 /* draft-ietf-tsvwg-auth-xxx */ 432 #define SCTP_RANDOM 0x8002 433 #define SCTP_CHUNK_LIST 0x8003 434 #define SCTP_HMAC_LIST 0x8004 435 /* 436 * draft-ietf-tsvwg-addip-sctp-xx param=0x8008 len=0xNNNN Byte | Byte | Byte 437 * | Byte Byte | Byte ... 438 * 439 * Where each byte is a chunk type extension supported. For example, to support 440 * all chunks one would have (in hex): 441 * 442 * 80 01 00 09 C0 C1 80 81 82 00 00 00 443 * 444 * Has the parameter. C0 = PR-SCTP (RFC3758) C1, 80 = ASCONF (addip draft) 81 445 * = Packet Drop 82 = Stream Reset 83 = Authentication 446 */ 447 #define SCTP_SUPPORTED_CHUNK_EXT 0x8008 448 449 /*************0xC000 series*************/ 450 #define SCTP_PRSCTP_SUPPORTED 0xc000 451 /* draft-ietf-tsvwg-addip-sctp */ 452 #define SCTP_ADD_IP_ADDRESS 0xc001 453 #define SCTP_DEL_IP_ADDRESS 0xc002 454 #define SCTP_ERROR_CAUSE_IND 0xc003 455 #define SCTP_SET_PRIM_ADDR 0xc004 456 #define SCTP_SUCCESS_REPORT 0xc005 457 #define SCTP_ULP_ADAPTATION 0xc006 458 /* behave-nat-draft */ 459 #define SCTP_HAS_NAT_SUPPORT 0xc007 460 #define SCTP_NAT_VTAGS 0xc008 461 462 /* Notification error codes */ 463 #define SCTP_NOTIFY_DATAGRAM_UNSENT 0x0001 464 #define SCTP_NOTIFY_DATAGRAM_SENT 0x0002 465 #define SCTP_FAILED_THRESHOLD 0x0004 466 #define SCTP_HEARTBEAT_SUCCESS 0x0008 467 #define SCTP_RESPONSE_TO_USER_REQ 0x0010 468 #define SCTP_INTERNAL_ERROR 0x0020 469 #define SCTP_SHUTDOWN_GUARD_EXPIRES 0x0040 470 #define SCTP_RECEIVED_SACK 0x0080 471 #define SCTP_PEER_FAULTY 0x0100 472 #define SCTP_ICMP_REFUSED 0x0200 473 474 /* bits for TOS field */ 475 #define SCTP_ECT0_BIT 0x02 476 #define SCTP_ECT1_BIT 0x01 477 #define SCTP_CE_BITS 0x03 478 479 /* below turns off above */ 480 #define SCTP_FLEXIBLE_ADDRESS 0x20 481 #define SCTP_NO_HEARTBEAT 0x40 482 483 /* mask to get sticky */ 484 #define SCTP_STICKY_OPTIONS_MASK 0x0c 485 486 487 /* 488 * SCTP states for internal state machine XXX (should match "user" values) 489 */ 490 #define SCTP_STATE_EMPTY 0x0000 491 #define SCTP_STATE_INUSE 0x0001 492 #define SCTP_STATE_COOKIE_WAIT 0x0002 493 #define SCTP_STATE_COOKIE_ECHOED 0x0004 494 #define SCTP_STATE_OPEN 0x0008 495 #define SCTP_STATE_SHUTDOWN_SENT 0x0010 496 #define SCTP_STATE_SHUTDOWN_RECEIVED 0x0020 497 #define SCTP_STATE_SHUTDOWN_ACK_SENT 0x0040 498 #define SCTP_STATE_SHUTDOWN_PENDING 0x0080 499 #define SCTP_STATE_CLOSED_SOCKET 0x0100 500 #define SCTP_STATE_ABOUT_TO_BE_FREED 0x0200 501 #define SCTP_STATE_PARTIAL_MSG_LEFT 0x0400 502 #define SCTP_STATE_WAS_ABORTED 0x0800 503 #define SCTP_STATE_IN_ACCEPT_QUEUE 0x1000 504 #define SCTP_STATE_MASK 0x007f 505 506 #define SCTP_GET_STATE(asoc) ((asoc)->state & SCTP_STATE_MASK) 507 #define SCTP_SET_STATE(asoc, newstate) ((asoc)->state = ((asoc)->state & ~SCTP_STATE_MASK) | newstate) 508 #define SCTP_CLEAR_SUBSTATE(asoc, substate) ((asoc)->state &= ~substate) 509 #define SCTP_ADD_SUBSTATE(asoc, substate) ((asoc)->state |= substate) 510 511 /* SCTP reachability state for each address */ 512 #define SCTP_ADDR_REACHABLE 0x001 513 #define SCTP_ADDR_NO_PMTUD 0x002 514 #define SCTP_ADDR_NOHB 0x004 515 #define SCTP_ADDR_BEING_DELETED 0x008 516 #define SCTP_ADDR_NOT_IN_ASSOC 0x010 517 #define SCTP_ADDR_OUT_OF_SCOPE 0x080 518 #define SCTP_ADDR_UNCONFIRMED 0x200 519 #define SCTP_ADDR_REQ_PRIMARY 0x400 520 /* JRS 5/13/07 - Added potentially failed state for CMT PF */ 521 #define SCTP_ADDR_PF 0x800 522 523 /* bound address types (e.g. valid address types to allow) */ 524 #define SCTP_BOUND_V6 0x01 525 #define SCTP_BOUND_V4 0x02 526 527 /* 528 * what is the default number of mbufs in a chain I allow before switching to 529 * a cluster 530 */ 531 #define SCTP_DEFAULT_MBUFS_IN_CHAIN 5 532 533 /* How long a cookie lives in milli-seconds */ 534 #define SCTP_DEFAULT_COOKIE_LIFE 60000 535 536 /* resource limit of streams */ 537 #define MAX_SCTP_STREAMS 2048 538 539 /* Maximum the mapping array will grow to (TSN mapping array) */ 540 #define SCTP_MAPPING_ARRAY 512 541 542 /* size of the inital malloc on the mapping array */ 543 #define SCTP_INITIAL_MAPPING_ARRAY 16 544 /* how much we grow the mapping array each call */ 545 #define SCTP_MAPPING_ARRAY_INCR 32 546 547 /* 548 * Here we define the timer types used by the implementation as arguments in 549 * the set/get timer type calls. 550 */ 551 #define SCTP_TIMER_INIT 0 552 #define SCTP_TIMER_RECV 1 553 #define SCTP_TIMER_SEND 2 554 #define SCTP_TIMER_HEARTBEAT 3 555 #define SCTP_TIMER_PMTU 4 556 #define SCTP_TIMER_MAXSHUTDOWN 5 557 #define SCTP_TIMER_SIGNATURE 6 558 /* 559 * number of timer types in the base SCTP structure used in the set/get and 560 * has the base default. 561 */ 562 #define SCTP_NUM_TMRS 7 563 564 /* timer types */ 565 #define SCTP_TIMER_TYPE_NONE 0 566 #define SCTP_TIMER_TYPE_SEND 1 567 #define SCTP_TIMER_TYPE_INIT 2 568 #define SCTP_TIMER_TYPE_RECV 3 569 #define SCTP_TIMER_TYPE_SHUTDOWN 4 570 #define SCTP_TIMER_TYPE_HEARTBEAT 5 571 #define SCTP_TIMER_TYPE_COOKIE 6 572 #define SCTP_TIMER_TYPE_NEWCOOKIE 7 573 #define SCTP_TIMER_TYPE_PATHMTURAISE 8 574 #define SCTP_TIMER_TYPE_SHUTDOWNACK 9 575 #define SCTP_TIMER_TYPE_ASCONF 10 576 #define SCTP_TIMER_TYPE_SHUTDOWNGUARD 11 577 #define SCTP_TIMER_TYPE_AUTOCLOSE 12 578 #define SCTP_TIMER_TYPE_EVENTWAKE 13 579 #define SCTP_TIMER_TYPE_STRRESET 14 580 #define SCTP_TIMER_TYPE_INPKILL 15 581 #define SCTP_TIMER_TYPE_ASOCKILL 16 582 #define SCTP_TIMER_TYPE_ADDR_WQ 17 583 #define SCTP_TIMER_TYPE_ZERO_COPY 18 584 #define SCTP_TIMER_TYPE_ZCOPY_SENDQ 19 585 #define SCTP_TIMER_TYPE_PRIM_DELETED 20 586 /* add new timers here - and increment LAST */ 587 #define SCTP_TIMER_TYPE_LAST 21 588 589 #define SCTP_IS_TIMER_TYPE_VALID(t) (((t) > SCTP_TIMER_TYPE_NONE) && \ 590 ((t) < SCTP_TIMER_TYPE_LAST)) 591 592 593 594 /* max number of TSN's dup'd that I will hold */ 595 #define SCTP_MAX_DUP_TSNS 20 596 597 /* 598 * Here we define the types used when setting the retry amounts. 599 */ 600 /* How many drop re-attempts we make on INIT/COOKIE-ECHO */ 601 #define SCTP_RETRY_DROPPED_THRESH 4 602 603 /* 604 * Maxmium number of chunks a single association can have on it. Note that 605 * this is a squishy number since the count can run over this if the user 606 * sends a large message down .. the fragmented chunks don't count until 607 * AFTER the message is on queue.. it would be the next send that blocks 608 * things. This number will get tuned up at boot in the sctp_init and use the 609 * number of clusters as a base. This way high bandwidth environments will 610 * not get impacted by the lower bandwidth sending a bunch of 1 byte chunks 611 */ 612 #define SCTP_ASOC_MAX_CHUNKS_ON_QUEUE 512 613 614 615 /* The conversion from time to ticks and vice versa is done by rounding 616 * upwards. This way we can test in the code the time to be positive and 617 * know that this corresponds to a positive number of ticks. 618 */ 619 #define MSEC_TO_TICKS(x) ((hz == 1000) ? x : ((((x) * hz) + 999) / 1000)) 620 #define TICKS_TO_MSEC(x) ((hz == 1000) ? x : ((((x) * 1000) + (hz - 1)) / hz)) 621 622 #define SEC_TO_TICKS(x) ((x) * hz) 623 #define TICKS_TO_SEC(x) (((x) + (hz - 1)) / hz) 624 625 /* 626 * Basically the minimum amount of time before I do a early FR. Making this 627 * value to low will cause duplicate retransmissions. 628 */ 629 #define SCTP_MINFR_MSEC_TIMER 250 630 /* The floor this value is allowed to fall to when starting a timer. */ 631 #define SCTP_MINFR_MSEC_FLOOR 20 632 633 /* init timer def = 1 sec */ 634 #define SCTP_INIT_SEC 1 635 636 /* send timer def = 1 seconds */ 637 #define SCTP_SEND_SEC 1 638 639 /* recv timer def = 200ms */ 640 #define SCTP_RECV_MSEC 200 641 642 /* 30 seconds + RTO (in ms) */ 643 #define SCTP_HB_DEFAULT_MSEC 30000 644 645 /* Max time I will wait for Shutdown to complete */ 646 #define SCTP_DEF_MAX_SHUTDOWN_SEC 180 647 648 649 /* 650 * This is how long a secret lives, NOT how long a cookie lives how many 651 * ticks the current secret will live. 652 */ 653 #define SCTP_DEFAULT_SECRET_LIFE_SEC 3600 654 655 #define SCTP_RTO_UPPER_BOUND (60000) /* 60 sec in ms */ 656 #define SCTP_RTO_LOWER_BOUND (1000) /* 1 sec is ms */ 657 #define SCTP_RTO_INITIAL (3000) /* 3 sec in ms */ 658 659 660 #define SCTP_INP_KILL_TIMEOUT 20/* number of ms to retry kill of inpcb */ 661 #define SCTP_ASOC_KILL_TIMEOUT 10 /* number of ms to retry kill of inpcb */ 662 663 #define SCTP_DEF_MAX_INIT 8 664 #define SCTP_DEF_MAX_SEND 10 665 #define SCTP_DEF_MAX_PATH_RTX 5 666 #define SCTP_DEF_PATH_PF_THRESHOLD SCTP_DEF_MAX_PATH_RTX 667 668 #define SCTP_DEF_PMTU_RAISE_SEC 600 /* 10 min between raise attempts */ 669 670 671 /* How many streams I request initally by default */ 672 #define SCTP_OSTREAM_INITIAL 10 673 674 /* 675 * How many smallest_mtu's need to increase before a window update sack is 676 * sent (should be a power of 2). 677 */ 678 /* Send window update (incr * this > hiwat). Should be a power of 2 */ 679 #define SCTP_MINIMAL_RWND (4096) /* minimal rwnd */ 680 681 #define SCTP_ADDRMAX 16 682 683 /* SCTP DEBUG Switch parameters */ 684 #define SCTP_DEBUG_TIMER1 0x00000001 685 #define SCTP_DEBUG_TIMER2 0x00000002 /* unused */ 686 #define SCTP_DEBUG_TIMER3 0x00000004 /* unused */ 687 #define SCTP_DEBUG_TIMER4 0x00000008 688 #define SCTP_DEBUG_OUTPUT1 0x00000010 689 #define SCTP_DEBUG_OUTPUT2 0x00000020 690 #define SCTP_DEBUG_OUTPUT3 0x00000040 691 #define SCTP_DEBUG_OUTPUT4 0x00000080 692 #define SCTP_DEBUG_UTIL1 0x00000100 693 #define SCTP_DEBUG_UTIL2 0x00000200 /* unused */ 694 #define SCTP_DEBUG_AUTH1 0x00000400 695 #define SCTP_DEBUG_AUTH2 0x00000800 /* unused */ 696 #define SCTP_DEBUG_INPUT1 0x00001000 697 #define SCTP_DEBUG_INPUT2 0x00002000 698 #define SCTP_DEBUG_INPUT3 0x00004000 699 #define SCTP_DEBUG_INPUT4 0x00008000 /* unused */ 700 #define SCTP_DEBUG_ASCONF1 0x00010000 701 #define SCTP_DEBUG_ASCONF2 0x00020000 702 #define SCTP_DEBUG_OUTPUT5 0x00040000 /* unused */ 703 #define SCTP_DEBUG_XXX 0x00080000 /* unused */ 704 #define SCTP_DEBUG_PCB1 0x00100000 705 #define SCTP_DEBUG_PCB2 0x00200000 /* unused */ 706 #define SCTP_DEBUG_PCB3 0x00400000 707 #define SCTP_DEBUG_PCB4 0x00800000 708 #define SCTP_DEBUG_INDATA1 0x01000000 709 #define SCTP_DEBUG_INDATA2 0x02000000 /* unused */ 710 #define SCTP_DEBUG_INDATA3 0x04000000 /* unused */ 711 #define SCTP_DEBUG_CRCOFFLOAD 0x08000000 /* unused */ 712 #define SCTP_DEBUG_USRREQ1 0x10000000 /* unused */ 713 #define SCTP_DEBUG_USRREQ2 0x20000000 /* unused */ 714 #define SCTP_DEBUG_PEEL1 0x40000000 715 #define SCTP_DEBUG_XXXXX 0x80000000 /* unused */ 716 #define SCTP_DEBUG_ALL 0x7ff3ffff 717 #define SCTP_DEBUG_NOISY 0x00040000 718 719 /* What sender needs to see to avoid SWS or we consider peers rwnd 0 */ 720 #define SCTP_SWS_SENDER_DEF 1420 721 722 /* 723 * SWS is scaled to the sb_hiwat of the socket. A value of 2 is hiwat/4, 1 724 * would be hiwat/2 etc. 725 */ 726 /* What receiver needs to see in sockbuf or we tell peer its 1 */ 727 #define SCTP_SWS_RECEIVER_DEF 3000 728 729 #define SCTP_INITIAL_CWND 4380 730 731 #define SCTP_DEFAULT_MTU 1500 /* emergency default MTU */ 732 /* amount peer is obligated to have in rwnd or I will abort */ 733 #define SCTP_MIN_RWND 1500 734 735 #define SCTP_DEFAULT_MAXSEGMENT 65535 736 737 #define SCTP_CHUNK_BUFFER_SIZE 512 738 #define SCTP_PARAM_BUFFER_SIZE 512 739 740 /* small chunk store for looking at chunk_list in auth */ 741 #define SCTP_SMALL_CHUNK_STORE 260 742 743 #define SCTP_DEFAULT_MINSEGMENT 512 /* MTU size ... if no mtu disc */ 744 #define SCTP_HOW_MANY_SECRETS 2 /* how many secrets I keep */ 745 746 #define SCTP_NUMBER_OF_SECRETS 8 /* or 8 * 4 = 32 octets */ 747 #define SCTP_SECRET_SIZE 32 /* number of octets in a 256 bits */ 748 749 750 /* 751 * SCTP upper layer notifications 752 */ 753 #define SCTP_NOTIFY_ASSOC_UP 1 754 #define SCTP_NOTIFY_ASSOC_DOWN 2 755 #define SCTP_NOTIFY_INTERFACE_DOWN 3 756 #define SCTP_NOTIFY_INTERFACE_UP 4 757 #define SCTP_NOTIFY_DG_FAIL 5 758 #define SCTP_NOTIFY_STRDATA_ERR 6 759 #define SCTP_NOTIFY_ASSOC_ABORTED 7 760 #define SCTP_NOTIFY_PEER_OPENED_STREAM 8 761 #define SCTP_NOTIFY_STREAM_OPENED_OK 9 762 #define SCTP_NOTIFY_ASSOC_RESTART 10 763 #define SCTP_NOTIFY_HB_RESP 11 764 #define SCTP_NOTIFY_ASCONF_SUCCESS 12 765 #define SCTP_NOTIFY_ASCONF_FAILED 13 766 #define SCTP_NOTIFY_PEER_SHUTDOWN 14 767 #define SCTP_NOTIFY_ASCONF_ADD_IP 15 768 #define SCTP_NOTIFY_ASCONF_DELETE_IP 16 769 #define SCTP_NOTIFY_ASCONF_SET_PRIMARY 17 770 #define SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION 18 771 #define SCTP_NOTIFY_INTERFACE_CONFIRMED 20 772 #define SCTP_NOTIFY_STR_RESET_RECV 21 773 #define SCTP_NOTIFY_STR_RESET_SEND 22 774 #define SCTP_NOTIFY_STR_RESET_FAILED_OUT 23 775 #define SCTP_NOTIFY_STR_RESET_FAILED_IN 24 776 #define SCTP_NOTIFY_AUTH_NEW_KEY 25 777 #define SCTP_NOTIFY_AUTH_FREE_KEY 26 778 #define SCTP_NOTIFY_SPECIAL_SP_FAIL 27 779 #define SCTP_NOTIFY_NO_PEER_AUTH 28 780 #define SCTP_NOTIFY_SENDER_DRY 29 781 #define SCTP_NOTIFY_STR_RESET_ADD_OK 30 782 #define SCTP_NOTIFY_STR_RESET_ADD_FAIL 31 783 #define SCTP_NOTIFY_STR_RESET_INSTREAM_ADD_OK 32 784 #define SCTP_NOTIFY_MAX 32 785 786 787 /* This is the value for messages that are NOT completely 788 * copied down where we will start to split the message. 789 * So, with our default, we split only if the piece we 790 * want to take will fill up a full MTU (assuming 791 * a 1500 byte MTU). 792 */ 793 #define SCTP_DEFAULT_SPLIT_POINT_MIN 2904 794 795 /* ABORT CODES and other tell-tale location 796 * codes are generated by adding the below 797 * to the instance id. 798 */ 799 800 /* File defines */ 801 #define SCTP_FROM_SCTP_INPUT 0x10000000 802 #define SCTP_FROM_SCTP_PCB 0x20000000 803 #define SCTP_FROM_SCTP_INDATA 0x30000000 804 #define SCTP_FROM_SCTP_TIMER 0x40000000 805 #define SCTP_FROM_SCTP_USRREQ 0x50000000 806 #define SCTP_FROM_SCTPUTIL 0x60000000 807 #define SCTP_FROM_SCTP6_USRREQ 0x70000000 808 #define SCTP_FROM_SCTP_ASCONF 0x80000000 809 #define SCTP_FROM_SCTP_OUTPUT 0x90000000 810 #define SCTP_FROM_SCTP_PEELOFF 0xa0000000 811 #define SCTP_FROM_SCTP_PANDA 0xb0000000 812 #define SCTP_FROM_SCTP_SYSCTL 0xc0000000 813 814 /* Location ID's */ 815 #define SCTP_LOC_1 0x00000001 816 #define SCTP_LOC_2 0x00000002 817 #define SCTP_LOC_3 0x00000003 818 #define SCTP_LOC_4 0x00000004 819 #define SCTP_LOC_5 0x00000005 820 #define SCTP_LOC_6 0x00000006 821 #define SCTP_LOC_7 0x00000007 822 #define SCTP_LOC_8 0x00000008 823 #define SCTP_LOC_9 0x00000009 824 #define SCTP_LOC_10 0x0000000a 825 #define SCTP_LOC_11 0x0000000b 826 #define SCTP_LOC_12 0x0000000c 827 #define SCTP_LOC_13 0x0000000d 828 #define SCTP_LOC_14 0x0000000e 829 #define SCTP_LOC_15 0x0000000f 830 #define SCTP_LOC_16 0x00000010 831 #define SCTP_LOC_17 0x00000011 832 #define SCTP_LOC_18 0x00000012 833 #define SCTP_LOC_19 0x00000013 834 #define SCTP_LOC_20 0x00000014 835 #define SCTP_LOC_21 0x00000015 836 #define SCTP_LOC_22 0x00000016 837 #define SCTP_LOC_23 0x00000017 838 #define SCTP_LOC_24 0x00000018 839 #define SCTP_LOC_25 0x00000019 840 #define SCTP_LOC_26 0x0000001a 841 #define SCTP_LOC_27 0x0000001b 842 #define SCTP_LOC_28 0x0000001c 843 #define SCTP_LOC_29 0x0000001d 844 #define SCTP_LOC_30 0x0000001e 845 #define SCTP_LOC_31 0x0000001f 846 #define SCTP_LOC_32 0x00000020 847 #define SCTP_LOC_33 0x00000021 848 849 850 /* Free assoc codes */ 851 #define SCTP_NORMAL_PROC 0 852 #define SCTP_PCBFREE_NOFORCE 1 853 #define SCTP_PCBFREE_FORCE 2 854 855 /* From codes for adding addresses */ 856 #define SCTP_ADDR_IS_CONFIRMED 8 857 #define SCTP_ADDR_DYNAMIC_ADDED 6 858 #define SCTP_IN_COOKIE_PROC 100 859 #define SCTP_ALLOC_ASOC 1 860 #define SCTP_LOAD_ADDR_2 2 861 #define SCTP_LOAD_ADDR_3 3 862 #define SCTP_LOAD_ADDR_4 4 863 #define SCTP_LOAD_ADDR_5 5 864 865 #define SCTP_DONOT_SETSCOPE 0 866 #define SCTP_DO_SETSCOPE 1 867 868 869 /* This value determines the default for when 870 * we try to add more on the send queue., if 871 * there is room. This prevents us from cycling 872 * into the copy_resume routine to often if 873 * we have not got enough space to add a decent 874 * enough size message. Note that if we have enough 875 * space to complete the message copy we will always 876 * add to the message, no matter what the size. Its 877 * only when we reach the point that we have some left 878 * to add, there is only room for part of it that we 879 * will use this threshold. Its also a sysctl. 880 */ 881 #define SCTP_DEFAULT_ADD_MORE 1452 882 883 #ifndef SCTP_PCBHASHSIZE 884 /* default number of association hash buckets in each endpoint */ 885 #define SCTP_PCBHASHSIZE 256 886 #endif 887 #ifndef SCTP_TCBHASHSIZE 888 #define SCTP_TCBHASHSIZE 1024 889 #endif 890 891 #ifndef SCTP_CHUNKQUEUE_SCALE 892 #define SCTP_CHUNKQUEUE_SCALE 10 893 #endif 894 895 /* clock variance is 1 ms */ 896 #define SCTP_CLOCK_GRANULARITY 1 897 #define IP_HDR_SIZE 40 /* we use the size of a IP6 header here this 898 * detracts a small amount for ipv4 but it 899 * simplifies the ipv6 addition */ 900 901 /* Argument magic number for sctp_inpcb_free() */ 902 903 /* third argument */ 904 #define SCTP_CALLED_DIRECTLY_NOCMPSET 0 905 #define SCTP_CALLED_AFTER_CMPSET_OFCLOSE 1 906 #define SCTP_CALLED_FROM_INPKILL_TIMER 2 907 /* second argument */ 908 #define SCTP_FREE_SHOULD_USE_ABORT 1 909 #define SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE 0 910 911 #ifndef IPPROTO_SCTP 912 #define IPPROTO_SCTP 132 /* the Official IANA number :-) */ 913 #endif /* !IPPROTO_SCTP */ 914 915 #define SCTP_MAX_DATA_BUNDLING 256 916 917 /* modular comparison */ 918 /* See RFC 1982 for details. */ 919 #define SCTP_SSN_GT(a, b) (((a < b) && ((uint16_t)(b - a) > (1U<<15))) || \ 920 ((a > b) && ((uint16_t)(a - b) < (1U<<15)))) 921 #define SCTP_SSN_GE(a, b) (SCTP_SSN_GT(a, b) || (a == b)) 922 #define SCTP_TSN_GT(a, b) (((a < b) && ((uint32_t)(b - a) > (1U<<31))) || \ 923 ((a > b) && ((uint32_t)(a - b) < (1U<<31)))) 924 #define SCTP_TSN_GE(a, b) (SCTP_TSN_GT(a, b) || (a == b)) 925 926 /* Mapping array manipulation routines */ 927 #define SCTP_IS_TSN_PRESENT(arry, gap) ((arry[(gap >> 3)] >> (gap & 0x07)) & 0x01) 928 #define SCTP_SET_TSN_PRESENT(arry, gap) (arry[(gap >> 3)] |= (0x01 << ((gap & 0x07)))) 929 #define SCTP_UNSET_TSN_PRESENT(arry, gap) (arry[(gap >> 3)] &= ((~(0x01 << ((gap & 0x07)))) & 0xff)) 930 #define SCTP_CALC_TSN_TO_GAP(gap, tsn, mapping_tsn) do { \ 931 if (tsn >= mapping_tsn) { \ 932 gap = tsn - mapping_tsn; \ 933 } else { \ 934 gap = (MAX_TSN - mapping_tsn) + tsn + 1; \ 935 } \ 936 } while(0) 937 938 939 #define SCTP_RETRAN_DONE -1 940 #define SCTP_RETRAN_EXIT -2 941 942 /* 943 * This value defines the number of vtag block time wait entry's per list 944 * element. Each entry will take 2 4 byte ints (and of course the overhead 945 * of the next pointer as well). Using 15 as an example will yield * ((8 * 946 * 15) + 8) or 128 bytes of overhead for each timewait block that gets 947 * initialized. Increasing it to 31 would yeild 256 bytes per block. 948 */ 949 #define SCTP_NUMBER_IN_VTAG_BLOCK 15 950 /* 951 * If we use the STACK option, we have an array of this size head pointers. 952 * This array is mod'd the with the size to find which bucket and then all 953 * entries must be searched to see if the tag is in timed wait. If so we 954 * reject it. 955 */ 956 #define SCTP_STACK_VTAG_HASH_SIZE 32 957 958 /* 959 * Number of seconds of time wait for a vtag. 960 */ 961 #define SCTP_TIME_WAIT 60 962 963 /* How many micro seconds is the cutoff from 964 * local lan type rtt's 965 */ 966 /* 967 * We allow 900us for the rtt. 968 */ 969 #define SCTP_LOCAL_LAN_RTT 900 970 #define SCTP_LAN_UNKNOWN 0 971 #define SCTP_LAN_LOCAL 1 972 #define SCTP_LAN_INTERNET 2 973 974 #define SCTP_SEND_BUFFER_SPLITTING 0x00000001 975 #define SCTP_RECV_BUFFER_SPLITTING 0x00000002 976 977 /* The system retains a cache of free chunks such to 978 * cut down on calls the memory allocation system. There 979 * is a per association limit of free items and a overall 980 * system limit. If either one gets hit then the resource 981 * stops being cached. 982 */ 983 984 #define SCTP_DEF_ASOC_RESC_LIMIT 10 985 #define SCTP_DEF_SYSTEM_RESC_LIMIT 1000 986 987 /*- 988 * defines for socket lock states. 989 * Used by __APPLE__ and SCTP_SO_LOCK_TESTING 990 */ 991 #define SCTP_SO_LOCKED 1 992 #define SCTP_SO_NOT_LOCKED 0 993 994 995 #define SCTP_HOLDS_LOCK 1 996 #define SCTP_NOT_LOCKED 0 997 998 /*- 999 * For address locks, do we hold the lock? 1000 */ 1001 #define SCTP_ADDR_LOCKED 1 1002 #define SCTP_ADDR_NOT_LOCKED 0 1003 1004 #define IN4_ISPRIVATE_ADDRESS(a) \ 1005 ((((uint8_t *)&(a)->s_addr)[0] == 10) || \ 1006 ((((uint8_t *)&(a)->s_addr)[0] == 172) && \ 1007 (((uint8_t *)&(a)->s_addr)[1] >= 16) && \ 1008 (((uint8_t *)&(a)->s_addr)[1] <= 32)) || \ 1009 ((((uint8_t *)&(a)->s_addr)[0] == 192) && \ 1010 (((uint8_t *)&(a)->s_addr)[1] == 168))) 1011 1012 #define IN4_ISLOOPBACK_ADDRESS(a) \ 1013 ((((uint8_t *)&(a)->s_addr)[0] == 127) && \ 1014 (((uint8_t *)&(a)->s_addr)[1] == 0) && \ 1015 (((uint8_t *)&(a)->s_addr)[2] == 0) && \ 1016 (((uint8_t *)&(a)->s_addr)[3] == 1)) 1017 1018 1019 #if defined(_KERNEL) 1020 1021 #define SCTP_GETTIME_TIMESPEC(x) (getnanouptime(x)) 1022 #define SCTP_GETTIME_TIMEVAL(x) (getmicrouptime(x)) 1023 #define SCTP_GETPTIME_TIMEVAL(x) (microuptime(x)) 1024 #endif 1025 /*#if defined(__FreeBSD__) || defined(__APPLE__)*/ 1026 /*#define SCTP_GETTIME_TIMEVAL(x) { \*/ 1027 /* (x)->tv_sec = ticks / 1000; \*/ 1028 /* (x)->tv_usec = (ticks % 1000) * 1000; \*/ 1029 /*}*/ 1030 1031 /*#else*/ 1032 /*#define SCTP_GETTIME_TIMEVAL(x) (microtime(x))*/ 1033 /*#endif __FreeBSD__ */ 1034 1035 #if defined(_KERNEL) || defined(__Userspace__) 1036 #define sctp_sowwakeup(inp, so) \ 1037 do { \ 1038 if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \ 1039 inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEOUTPUT; \ 1040 } else { \ 1041 sowwakeup(so); \ 1042 } \ 1043 } while (0) 1044 1045 #define sctp_sowwakeup_locked(inp, so) \ 1046 do { \ 1047 if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \ 1048 SOCKBUF_UNLOCK(&((so)->so_snd)); \ 1049 inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEOUTPUT; \ 1050 } else { \ 1051 sowwakeup_locked(so); \ 1052 } \ 1053 } while (0) 1054 1055 #define sctp_sorwakeup(inp, so) \ 1056 do { \ 1057 if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \ 1058 inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEINPUT; \ 1059 } else { \ 1060 sorwakeup(so); \ 1061 } \ 1062 } while (0) 1063 1064 #define sctp_sorwakeup_locked(inp, so) \ 1065 do { \ 1066 if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \ 1067 inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEINPUT; \ 1068 SOCKBUF_UNLOCK(&((so)->so_rcv)); \ 1069 } else { \ 1070 sorwakeup_locked(so); \ 1071 } \ 1072 } while (0) 1073 1074 #endif /* _KERNEL || __Userspace__ */ 1075 #endif 1076