1 /*- 2 * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved. 3 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. 4 * Copyright (c) 2008-2012, 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 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD$"); 35 36 #ifndef _NETINET_SCTP_CONSTANTS_H_ 37 #define _NETINET_SCTP_CONSTANTS_H_ 38 39 40 /* IANA assigned port number for SCTP over UDP encapsulation */ 41 #define SCTP_OVER_UDP_TUNNELING_PORT 9899 42 43 /* Number of packets to get before sack sent by default */ 44 #define SCTP_DEFAULT_SACK_FREQ 2 45 46 /* Address limit - This variable is calculated 47 * based on an 65535 byte max ip packet. We take out 100 bytes 48 * for the cookie, 40 bytes for a v6 header and 32 49 * bytes for the init structure. A second init structure 50 * for the init-ack and then finally a third one for the 51 * imbedded init. This yeilds 100+40+(3 * 32) = 236 bytes. 52 * This leaves 65299 bytes for addresses. We throw out the 299 bytes. 53 * Now whatever we send in the INIT() we need to allow to get back in the 54 * INIT-ACK plus all the values from INIT and INIT-ACK 55 * listed in the cookie. Plus we need some overhead for 56 * maybe copied parameters in the COOKIE. If we 57 * allow 1080 addresses, and each side has 1080 V6 addresses 58 * that will be 21600 bytes. In the INIT-ACK we will 59 * see the INIT-ACK 21600 + 43200 in the cookie. This leaves 60 * about 500 bytes slack for misc things in the cookie. 61 */ 62 #define SCTP_ADDRESS_LIMIT 1080 63 64 /* We need at least 2k of space for us, inits 65 * larger than that lets abort. 66 */ 67 #define SCTP_LARGEST_INIT_ACCEPTED (65535 - 2048) 68 69 /* Largest length of a chunk */ 70 #define SCTP_MAX_CHUNK_LENGTH 0xffff 71 /* Largest length of an error cause */ 72 #define SCTP_MAX_CAUSE_LENGTH 0xffff 73 /* Number of addresses where we just skip the counting */ 74 #define SCTP_COUNT_LIMIT 40 75 76 #define SCTP_ZERO_COPY_TICK_DELAY (((100 * hz) + 999) / 1000) 77 #define SCTP_ZERO_COPY_SENDQ_TICK_DELAY (((100 * hz) + 999) / 1000) 78 79 /* Number of ticks to delay before running 80 * iterator on an address change. 81 */ 82 #define SCTP_ADDRESS_TICK_DELAY 2 83 84 #define SCTP_VERSION_STRING "KAME-BSD 1.1" 85 /* #define SCTP_AUDITING_ENABLED 1 used for debug/auditing */ 86 #define SCTP_AUDIT_SIZE 256 87 88 89 #define SCTP_KTRHEAD_NAME "sctp_iterator" 90 #define SCTP_KTHREAD_PAGES 0 91 92 #define SCTP_MCORE_NAME "sctp_core_worker" 93 94 95 /* If you support Multi-VRF how big to 96 * make the initial array of VRF's to. 97 */ 98 #define SCTP_DEFAULT_VRF_SIZE 4 99 100 /* constants for rto calc */ 101 #define sctp_align_safe_nocopy 0 102 #define sctp_align_unsafe_makecopy 1 103 104 /* JRS - Values defined for the HTCP algorithm */ 105 #define ALPHA_BASE (1<<7) /* 1.0 with shift << 7 */ 106 #define BETA_MIN (1<<6) /* 0.5 with shift << 7 */ 107 #define BETA_MAX 102 /* 0.8 with shift << 7 */ 108 109 /* Places that CWND log can happen from */ 110 #define SCTP_CWND_LOG_FROM_FR 1 111 #define SCTP_CWND_LOG_FROM_RTX 2 112 #define SCTP_CWND_LOG_FROM_BRST 3 113 #define SCTP_CWND_LOG_FROM_SS 4 114 #define SCTP_CWND_LOG_FROM_CA 5 115 #define SCTP_CWND_LOG_FROM_SAT 6 116 #define SCTP_BLOCK_LOG_INTO_BLK 7 117 #define SCTP_BLOCK_LOG_OUTOF_BLK 8 118 #define SCTP_BLOCK_LOG_CHECK 9 119 #define SCTP_STR_LOG_FROM_INTO_STRD 10 120 #define SCTP_STR_LOG_FROM_IMMED_DEL 11 121 #define SCTP_STR_LOG_FROM_INSERT_HD 12 122 #define SCTP_STR_LOG_FROM_INSERT_MD 13 123 #define SCTP_STR_LOG_FROM_INSERT_TL 14 124 #define SCTP_STR_LOG_FROM_MARK_TSN 15 125 #define SCTP_STR_LOG_FROM_EXPRS_DEL 16 126 #define SCTP_FR_LOG_BIGGEST_TSNS 17 127 #define SCTP_FR_LOG_STRIKE_TEST 18 128 #define SCTP_FR_LOG_STRIKE_CHUNK 19 129 #define SCTP_FR_T3_TIMEOUT 20 130 #define SCTP_MAP_PREPARE_SLIDE 21 131 #define SCTP_MAP_SLIDE_FROM 22 132 #define SCTP_MAP_SLIDE_RESULT 23 133 #define SCTP_MAP_SLIDE_CLEARED 24 134 #define SCTP_MAP_SLIDE_NONE 25 135 #define SCTP_FR_T3_MARK_TIME 26 136 #define SCTP_FR_T3_MARKED 27 137 #define SCTP_FR_T3_STOPPED 28 138 #define SCTP_FR_MARKED 30 139 #define SCTP_CWND_LOG_NOADV_SS 31 140 #define SCTP_CWND_LOG_NOADV_CA 32 141 #define SCTP_MAX_BURST_APPLIED 33 142 #define SCTP_MAX_IFP_APPLIED 34 143 #define SCTP_MAX_BURST_ERROR_STOP 35 144 #define SCTP_INCREASE_PEER_RWND 36 145 #define SCTP_DECREASE_PEER_RWND 37 146 #define SCTP_SET_PEER_RWND_VIA_SACK 38 147 #define SCTP_LOG_MBCNT_INCREASE 39 148 #define SCTP_LOG_MBCNT_DECREASE 40 149 #define SCTP_LOG_MBCNT_CHKSET 41 150 #define SCTP_LOG_NEW_SACK 42 151 #define SCTP_LOG_TSN_ACKED 43 152 #define SCTP_LOG_TSN_REVOKED 44 153 #define SCTP_LOG_LOCK_TCB 45 154 #define SCTP_LOG_LOCK_INP 46 155 #define SCTP_LOG_LOCK_SOCK 47 156 #define SCTP_LOG_LOCK_SOCKBUF_R 48 157 #define SCTP_LOG_LOCK_SOCKBUF_S 49 158 #define SCTP_LOG_LOCK_CREATE 50 159 #define SCTP_LOG_INITIAL_RTT 51 160 #define SCTP_LOG_RTTVAR 52 161 #define SCTP_LOG_SBALLOC 53 162 #define SCTP_LOG_SBFREE 54 163 #define SCTP_LOG_SBRESULT 55 164 #define SCTP_FR_DUPED 56 165 #define SCTP_FR_MARKED_EARLY 57 166 #define SCTP_FR_CWND_REPORT 58 167 #define SCTP_FR_CWND_REPORT_START 59 168 #define SCTP_FR_CWND_REPORT_STOP 60 169 #define SCTP_CWND_LOG_FROM_SEND 61 170 #define SCTP_CWND_INITIALIZATION 62 171 #define SCTP_CWND_LOG_FROM_T3 63 172 #define SCTP_CWND_LOG_FROM_SACK 64 173 #define SCTP_CWND_LOG_NO_CUMACK 65 174 #define SCTP_CWND_LOG_FROM_RESEND 66 175 #define SCTP_FR_LOG_CHECK_STRIKE 67 176 #define SCTP_SEND_NOW_COMPLETES 68 177 #define SCTP_CWND_LOG_FILL_OUTQ_CALLED 69 178 #define SCTP_CWND_LOG_FILL_OUTQ_FILLS 70 179 #define SCTP_LOG_FREE_SENT 71 180 #define SCTP_NAGLE_APPLIED 72 181 #define SCTP_NAGLE_SKIPPED 73 182 #define SCTP_WAKESND_FROM_SACK 74 183 #define SCTP_WAKESND_FROM_FWDTSN 75 184 #define SCTP_NOWAKE_FROM_SACK 76 185 #define SCTP_CWNDLOG_PRESEND 77 186 #define SCTP_CWNDLOG_ENDSEND 78 187 #define SCTP_AT_END_OF_SACK 79 188 #define SCTP_REASON_FOR_SC 80 189 #define SCTP_BLOCK_LOG_INTO_BLKA 81 190 #define SCTP_ENTER_USER_RECV 82 191 #define SCTP_USER_RECV_SACKS 83 192 #define SCTP_SORECV_BLOCKSA 84 193 #define SCTP_SORECV_BLOCKSB 85 194 #define SCTP_SORECV_DONE 86 195 #define SCTP_SACK_RWND_UPDATE 87 196 #define SCTP_SORECV_ENTER 88 197 #define SCTP_SORECV_ENTERPL 89 198 #define SCTP_MBUF_INPUT 90 199 #define SCTP_MBUF_IALLOC 91 200 #define SCTP_MBUF_IFREE 92 201 #define SCTP_MBUF_ICOPY 93 202 #define SCTP_MBUF_SPLIT 94 203 #define SCTP_SORCV_FREECTL 95 204 #define SCTP_SORCV_DOESCPY 96 205 #define SCTP_SORCV_DOESLCK 97 206 #define SCTP_SORCV_DOESADJ 98 207 #define SCTP_SORCV_BOTWHILE 99 208 #define SCTP_SORCV_PASSBF 100 209 #define SCTP_SORCV_ADJD 101 210 #define SCTP_UNKNOWN_MAX 102 211 #define SCTP_RANDY_STUFF 103 212 #define SCTP_RANDY_STUFF1 104 213 #define SCTP_STRMOUT_LOG_ASSIGN 105 214 #define SCTP_STRMOUT_LOG_SEND 106 215 #define SCTP_FLIGHT_LOG_DOWN_CA 107 216 #define SCTP_FLIGHT_LOG_UP 108 217 #define SCTP_FLIGHT_LOG_DOWN_GAP 109 218 #define SCTP_FLIGHT_LOG_DOWN_RSND 110 219 #define SCTP_FLIGHT_LOG_UP_RSND 111 220 #define SCTP_FLIGHT_LOG_DOWN_RSND_TO 112 221 #define SCTP_FLIGHT_LOG_DOWN_WP 113 222 #define SCTP_FLIGHT_LOG_UP_REVOKE 114 223 #define SCTP_FLIGHT_LOG_DOWN_PDRP 115 224 #define SCTP_FLIGHT_LOG_DOWN_PMTU 116 225 #define SCTP_SACK_LOG_NORMAL 117 226 #define SCTP_SACK_LOG_EXPRESS 118 227 #define SCTP_MAP_TSN_ENTERS 119 228 #define SCTP_THRESHOLD_CLEAR 120 229 #define SCTP_THRESHOLD_INCR 121 230 #define SCTP_FLIGHT_LOG_DWN_WP_FWD 122 231 #define SCTP_FWD_TSN_CHECK 123 232 #define SCTP_LOG_MAX_TYPES 124 233 /* 234 * To turn on various logging, you must first enable 'options KTR' and 235 * you might want to bump the entires 'options KTR_ENTRIES=80000'. 236 * To get something to log you define one of the logging defines. 237 * (see LINT). 238 * 239 * This gets the compile in place, but you still need to turn the 240 * logging flag on too in the sysctl (see in sctp.h). 241 */ 242 243 #define SCTP_LOG_EVENT_UNKNOWN 0 244 #define SCTP_LOG_EVENT_CWND 1 245 #define SCTP_LOG_EVENT_BLOCK 2 246 #define SCTP_LOG_EVENT_STRM 3 247 #define SCTP_LOG_EVENT_FR 4 248 #define SCTP_LOG_EVENT_MAP 5 249 #define SCTP_LOG_EVENT_MAXBURST 6 250 #define SCTP_LOG_EVENT_RWND 7 251 #define SCTP_LOG_EVENT_MBCNT 8 252 #define SCTP_LOG_EVENT_SACK 9 253 #define SCTP_LOG_LOCK_EVENT 10 254 #define SCTP_LOG_EVENT_RTT 11 255 #define SCTP_LOG_EVENT_SB 12 256 #define SCTP_LOG_EVENT_NAGLE 13 257 #define SCTP_LOG_EVENT_WAKE 14 258 #define SCTP_LOG_MISC_EVENT 15 259 #define SCTP_LOG_EVENT_CLOSE 16 260 #define SCTP_LOG_EVENT_MBUF 17 261 #define SCTP_LOG_CHUNK_PROC 18 262 #define SCTP_LOG_ERROR_RET 19 263 264 #define SCTP_LOG_MAX_EVENT 20 265 266 #define SCTP_LOCK_UNKNOWN 2 267 268 269 /* number of associations by default for zone allocation */ 270 #define SCTP_MAX_NUM_OF_ASOC 40000 271 /* how many addresses per assoc remote and local */ 272 #define SCTP_SCALE_FOR_ADDR 2 273 274 /* default MULTIPLE_ASCONF mode enable(1)/disable(0) value (sysctl) */ 275 #define SCTP_DEFAULT_MULTIPLE_ASCONFS 0 276 277 /* 278 * Threshold for rwnd updates, we have to read (sb_hiwat >> 279 * SCTP_RWND_HIWAT_SHIFT) before we will look to see if we need to send a 280 * window update sack. When we look, we compare the last rwnd we sent vs the 281 * current rwnd. It too must be greater than this value. Using 3 divdes the 282 * hiwat by 8, so for 200k rwnd we need to read 24k. For a 64k rwnd we need 283 * to read 8k. This seems about right.. I hope :-D.. we do set a 284 * min of a MTU on it so if the rwnd is real small we will insist 285 * on a full MTU of 1500 bytes. 286 */ 287 #define SCTP_RWND_HIWAT_SHIFT 3 288 289 /* How much of the rwnd must the 290 * message be taking up to start partial delivery. 291 * We calculate this by shifing the hi_water (recv_win) 292 * left the following .. set to 1, when a message holds 293 * 1/2 the rwnd. If we set it to 2 when a message holds 294 * 1/4 the rwnd...etc.. 295 */ 296 297 #define SCTP_PARTIAL_DELIVERY_SHIFT 1 298 299 /* 300 * default HMAC for cookies, etc... use one of the AUTH HMAC id's 301 * SCTP_HMAC is the HMAC_ID to use 302 * SCTP_SIGNATURE_SIZE is the digest length 303 */ 304 #define SCTP_HMAC SCTP_AUTH_HMAC_ID_SHA1 305 #define SCTP_SIGNATURE_SIZE SCTP_AUTH_DIGEST_LEN_SHA1 306 #define SCTP_SIGNATURE_ALOC_SIZE SCTP_SIGNATURE_SIZE 307 308 /* 309 * the SCTP protocol signature this includes the version number encoded in 310 * the last 4 bits of the signature. 311 */ 312 #define PROTO_SIGNATURE_A 0x30000000 313 #define SCTP_VERSION_NUMBER 0x3 314 315 #define MAX_TSN 0xffffffff 316 317 /* how many executions every N tick's */ 318 #define SCTP_ITERATOR_MAX_AT_ONCE 20 319 320 /* number of clock ticks between iterator executions */ 321 #define SCTP_ITERATOR_TICKS 1 322 323 /* 324 * option: If you comment out the following you will receive the old behavior 325 * of obeying cwnd for the fast retransmit algorithm. With this defined a FR 326 * happens right away with-out waiting for the flightsize to drop below the 327 * cwnd value (which is reduced by the FR to 1/2 the inflight packets). 328 */ 329 #define SCTP_IGNORE_CWND_ON_FR 1 330 331 /* 332 * Adds implementors guide behavior to only use newest highest update in SACK 333 * gap ack's to figure out if you need to stroke a chunk for FR. 334 */ 335 #define SCTP_NO_FR_UNLESS_SEGMENT_SMALLER 1 336 337 /* default max I can burst out after a fast retransmit, 0 disables it */ 338 #define SCTP_DEF_MAX_BURST 4 339 #define SCTP_DEF_HBMAX_BURST 4 340 #define SCTP_DEF_FRMAX_BURST 4 341 342 /* RTO calculation flag to say if it 343 * is safe to determine local lan or not. 344 */ 345 #define SCTP_RTT_FROM_NON_DATA 0 346 #define SCTP_RTT_FROM_DATA 1 347 348 #define PR_SCTP_UNORDERED_FLAG 0x0001 349 350 /* IP hdr (20/40) + 12+2+2 (enet) + sctp common 12 */ 351 #define SCTP_FIRST_MBUF_RESV 68 352 /* Packet transmit states in the sent field */ 353 #define SCTP_DATAGRAM_UNSENT 0 354 #define SCTP_DATAGRAM_SENT 1 355 #define SCTP_DATAGRAM_RESEND1 2 /* not used (in code, but may 356 * hit this value) */ 357 #define SCTP_DATAGRAM_RESEND2 3 /* not used (in code, but may 358 * hit this value) */ 359 #define SCTP_DATAGRAM_RESEND 4 360 #define SCTP_DATAGRAM_ACKED 10010 361 #define SCTP_DATAGRAM_MARKED 20010 362 #define SCTP_FORWARD_TSN_SKIP 30010 363 #define SCTP_DATAGRAM_NR_ACKED 40010 364 365 /* chunk output send from locations */ 366 #define SCTP_OUTPUT_FROM_USR_SEND 0 367 #define SCTP_OUTPUT_FROM_T3 1 368 #define SCTP_OUTPUT_FROM_INPUT_ERROR 2 369 #define SCTP_OUTPUT_FROM_CONTROL_PROC 3 370 #define SCTP_OUTPUT_FROM_SACK_TMR 4 371 #define SCTP_OUTPUT_FROM_SHUT_TMR 5 372 #define SCTP_OUTPUT_FROM_HB_TMR 6 373 #define SCTP_OUTPUT_FROM_SHUT_ACK_TMR 7 374 #define SCTP_OUTPUT_FROM_ASCONF_TMR 8 375 #define SCTP_OUTPUT_FROM_STRRST_TMR 9 376 #define SCTP_OUTPUT_FROM_AUTOCLOSE_TMR 10 377 #define SCTP_OUTPUT_FROM_EARLY_FR_TMR 11 378 #define SCTP_OUTPUT_FROM_STRRST_REQ 12 379 #define SCTP_OUTPUT_FROM_USR_RCVD 13 380 #define SCTP_OUTPUT_FROM_COOKIE_ACK 14 381 #define SCTP_OUTPUT_FROM_DRAIN 15 382 #define SCTP_OUTPUT_FROM_CLOSING 16 383 #define SCTP_OUTPUT_FROM_SOCKOPT 17 384 385 /* SCTP chunk types are moved sctp.h for application (NAT, FW) use */ 386 387 /* align to 32-bit sizes */ 388 #define SCTP_SIZE32(x) ((((x) + 3) >> 2) << 2) 389 390 #define IS_SCTP_CONTROL(a) (((a)->chunk_type != SCTP_DATA) && ((a)->chunk_type != SCTP_IDATA)) 391 #define IS_SCTP_DATA(a) (((a)->chunk_type == SCTP_DATA) || ((a)->chunk_type == SCTP_IDATA)) 392 393 394 /* SCTP parameter types */ 395 /*************0x0000 series*************/ 396 #define SCTP_HEARTBEAT_INFO 0x0001 397 #define SCTP_IPV4_ADDRESS 0x0005 398 #define SCTP_IPV6_ADDRESS 0x0006 399 #define SCTP_STATE_COOKIE 0x0007 400 #define SCTP_UNRECOG_PARAM 0x0008 401 #define SCTP_COOKIE_PRESERVE 0x0009 402 #define SCTP_HOSTNAME_ADDRESS 0x000b 403 #define SCTP_SUPPORTED_ADDRTYPE 0x000c 404 405 /* draft-ietf-stewart-tsvwg-strreset-xxx */ 406 #define SCTP_STR_RESET_OUT_REQUEST 0x000d 407 #define SCTP_STR_RESET_IN_REQUEST 0x000e 408 #define SCTP_STR_RESET_TSN_REQUEST 0x000f 409 #define SCTP_STR_RESET_RESPONSE 0x0010 410 #define SCTP_STR_RESET_ADD_OUT_STREAMS 0x0011 411 #define SCTP_STR_RESET_ADD_IN_STREAMS 0x0012 412 413 #define SCTP_MAX_RESET_PARAMS 2 414 #define SCTP_STREAM_RESET_TSN_DELTA 0x1000 415 416 /*************0x4000 series*************/ 417 418 /*************0x8000 series*************/ 419 #define SCTP_ECN_CAPABLE 0x8000 420 421 /* draft-ietf-tsvwg-auth-xxx */ 422 #define SCTP_RANDOM 0x8002 423 #define SCTP_CHUNK_LIST 0x8003 424 #define SCTP_HMAC_LIST 0x8004 425 /* 426 * draft-ietf-tsvwg-addip-sctp-xx param=0x8008 len=0xNNNN Byte | Byte | Byte 427 * | Byte Byte | Byte ... 428 * 429 * Where each byte is a chunk type extension supported. For example, to support 430 * all chunks one would have (in hex): 431 * 432 * 80 01 00 09 C0 C1 80 81 82 00 00 00 433 * 434 * Has the parameter. C0 = PR-SCTP (RFC3758) C1, 80 = ASCONF (addip draft) 81 435 * = Packet Drop 82 = Stream Reset 83 = Authentication 436 */ 437 #define SCTP_SUPPORTED_CHUNK_EXT 0x8008 438 439 /*************0xC000 series*************/ 440 #define SCTP_PRSCTP_SUPPORTED 0xc000 441 /* draft-ietf-tsvwg-addip-sctp */ 442 #define SCTP_ADD_IP_ADDRESS 0xc001 443 #define SCTP_DEL_IP_ADDRESS 0xc002 444 #define SCTP_ERROR_CAUSE_IND 0xc003 445 #define SCTP_SET_PRIM_ADDR 0xc004 446 #define SCTP_SUCCESS_REPORT 0xc005 447 #define SCTP_ULP_ADAPTATION 0xc006 448 /* behave-nat-draft */ 449 #define SCTP_HAS_NAT_SUPPORT 0xc007 450 #define SCTP_NAT_VTAGS 0xc008 451 452 /* bits for TOS field */ 453 #define SCTP_ECT0_BIT 0x02 454 #define SCTP_ECT1_BIT 0x01 455 #define SCTP_CE_BITS 0x03 456 457 /* below turns off above */ 458 #define SCTP_FLEXIBLE_ADDRESS 0x20 459 #define SCTP_NO_HEARTBEAT 0x40 460 461 /* mask to get sticky */ 462 #define SCTP_STICKY_OPTIONS_MASK 0x0c 463 464 465 /* 466 * SCTP states for internal state machine 467 */ 468 #define SCTP_STATE_EMPTY 0x0000 469 #define SCTP_STATE_INUSE 0x0001 470 #define SCTP_STATE_COOKIE_WAIT 0x0002 471 #define SCTP_STATE_COOKIE_ECHOED 0x0004 472 #define SCTP_STATE_OPEN 0x0008 473 #define SCTP_STATE_SHUTDOWN_SENT 0x0010 474 #define SCTP_STATE_SHUTDOWN_RECEIVED 0x0020 475 #define SCTP_STATE_SHUTDOWN_ACK_SENT 0x0040 476 #define SCTP_STATE_SHUTDOWN_PENDING 0x0080 477 #define SCTP_STATE_CLOSED_SOCKET 0x0100 478 #define SCTP_STATE_ABOUT_TO_BE_FREED 0x0200 479 #define SCTP_STATE_PARTIAL_MSG_LEFT 0x0400 480 #define SCTP_STATE_WAS_ABORTED 0x0800 481 #define SCTP_STATE_IN_ACCEPT_QUEUE 0x1000 482 #define SCTP_STATE_MASK 0x007f 483 484 #define SCTP_GET_STATE(asoc) ((asoc)->state & SCTP_STATE_MASK) 485 #define SCTP_SET_STATE(asoc, newstate) ((asoc)->state = ((asoc)->state & ~SCTP_STATE_MASK) | newstate) 486 #define SCTP_CLEAR_SUBSTATE(asoc, substate) ((asoc)->state &= ~substate) 487 #define SCTP_ADD_SUBSTATE(asoc, substate) ((asoc)->state |= substate) 488 489 /* SCTP reachability state for each address */ 490 #define SCTP_ADDR_REACHABLE 0x001 491 #define SCTP_ADDR_NO_PMTUD 0x002 492 #define SCTP_ADDR_NOHB 0x004 493 #define SCTP_ADDR_BEING_DELETED 0x008 494 #define SCTP_ADDR_NOT_IN_ASSOC 0x010 495 #define SCTP_ADDR_OUT_OF_SCOPE 0x080 496 #define SCTP_ADDR_UNCONFIRMED 0x200 497 #define SCTP_ADDR_REQ_PRIMARY 0x400 498 /* JRS 5/13/07 - Added potentially failed state for CMT PF */ 499 #define SCTP_ADDR_PF 0x800 500 501 /* bound address types (e.g. valid address types to allow) */ 502 #define SCTP_BOUND_V6 0x01 503 #define SCTP_BOUND_V4 0x02 504 505 /* 506 * what is the default number of mbufs in a chain I allow before switching to 507 * a cluster 508 */ 509 #define SCTP_DEFAULT_MBUFS_IN_CHAIN 5 510 511 /* How long a cookie lives in milli-seconds */ 512 #define SCTP_DEFAULT_COOKIE_LIFE 60000 513 514 /* Maximum the mapping array will grow to (TSN mapping array) */ 515 #define SCTP_MAPPING_ARRAY 512 516 517 /* size of the initial malloc on the mapping array */ 518 #define SCTP_INITIAL_MAPPING_ARRAY 16 519 /* how much we grow the mapping array each call */ 520 #define SCTP_MAPPING_ARRAY_INCR 32 521 522 /* 523 * Here we define the timer types used by the implementation as arguments in 524 * the set/get timer type calls. 525 */ 526 #define SCTP_TIMER_INIT 0 527 #define SCTP_TIMER_RECV 1 528 #define SCTP_TIMER_SEND 2 529 #define SCTP_TIMER_HEARTBEAT 3 530 #define SCTP_TIMER_PMTU 4 531 #define SCTP_TIMER_MAXSHUTDOWN 5 532 #define SCTP_TIMER_SIGNATURE 6 533 /* 534 * number of timer types in the base SCTP structure used in the set/get and 535 * has the base default. 536 */ 537 #define SCTP_NUM_TMRS 7 538 539 /* timer types */ 540 #define SCTP_TIMER_TYPE_NONE 0 541 #define SCTP_TIMER_TYPE_SEND 1 542 #define SCTP_TIMER_TYPE_INIT 2 543 #define SCTP_TIMER_TYPE_RECV 3 544 #define SCTP_TIMER_TYPE_SHUTDOWN 4 545 #define SCTP_TIMER_TYPE_HEARTBEAT 5 546 #define SCTP_TIMER_TYPE_COOKIE 6 547 #define SCTP_TIMER_TYPE_NEWCOOKIE 7 548 #define SCTP_TIMER_TYPE_PATHMTURAISE 8 549 #define SCTP_TIMER_TYPE_SHUTDOWNACK 9 550 #define SCTP_TIMER_TYPE_ASCONF 10 551 #define SCTP_TIMER_TYPE_SHUTDOWNGUARD 11 552 #define SCTP_TIMER_TYPE_AUTOCLOSE 12 553 #define SCTP_TIMER_TYPE_EVENTWAKE 13 554 #define SCTP_TIMER_TYPE_STRRESET 14 555 #define SCTP_TIMER_TYPE_INPKILL 15 556 #define SCTP_TIMER_TYPE_ASOCKILL 16 557 #define SCTP_TIMER_TYPE_ADDR_WQ 17 558 #define SCTP_TIMER_TYPE_PRIM_DELETED 18 559 /* add new timers here - and increment LAST */ 560 #define SCTP_TIMER_TYPE_LAST 19 561 562 #define SCTP_IS_TIMER_TYPE_VALID(t) (((t) > SCTP_TIMER_TYPE_NONE) && \ 563 ((t) < SCTP_TIMER_TYPE_LAST)) 564 565 566 567 /* max number of TSN's dup'd that I will hold */ 568 #define SCTP_MAX_DUP_TSNS 20 569 570 /* 571 * Here we define the types used when setting the retry amounts. 572 */ 573 /* How many drop re-attempts we make on INIT/COOKIE-ECHO */ 574 #define SCTP_RETRY_DROPPED_THRESH 4 575 576 /* 577 * Maxmium number of chunks a single association can have on it. Note that 578 * this is a squishy number since the count can run over this if the user 579 * sends a large message down .. the fragmented chunks don't count until 580 * AFTER the message is on queue.. it would be the next send that blocks 581 * things. This number will get tuned up at boot in the sctp_init and use the 582 * number of clusters as a base. This way high bandwidth environments will 583 * not get impacted by the lower bandwidth sending a bunch of 1 byte chunks 584 */ 585 #define SCTP_ASOC_MAX_CHUNKS_ON_QUEUE 512 586 587 588 /* The conversion from time to ticks and vice versa is done by rounding 589 * upwards. This way we can test in the code the time to be positive and 590 * know that this corresponds to a positive number of ticks. 591 */ 592 #define MSEC_TO_TICKS(x) ((hz == 1000) ? x : ((((x) * hz) + 999) / 1000)) 593 #define TICKS_TO_MSEC(x) ((hz == 1000) ? x : ((((x) * 1000) + (hz - 1)) / hz)) 594 595 #define SEC_TO_TICKS(x) ((x) * hz) 596 #define TICKS_TO_SEC(x) (((x) + (hz - 1)) / hz) 597 598 /* 599 * Basically the minimum amount of time before I do a early FR. Making this 600 * value to low will cause duplicate retransmissions. 601 */ 602 #define SCTP_MINFR_MSEC_TIMER 250 603 /* The floor this value is allowed to fall to when starting a timer. */ 604 #define SCTP_MINFR_MSEC_FLOOR 20 605 606 /* init timer def = 1 sec */ 607 #define SCTP_INIT_SEC 1 608 609 /* send timer def = 1 seconds */ 610 #define SCTP_SEND_SEC 1 611 612 /* recv timer def = 200ms */ 613 #define SCTP_RECV_MSEC 200 614 615 /* 30 seconds + RTO (in ms) */ 616 #define SCTP_HB_DEFAULT_MSEC 30000 617 618 /* 619 * This is how long a secret lives, NOT how long a cookie lives how many 620 * ticks the current secret will live. 621 */ 622 #define SCTP_DEFAULT_SECRET_LIFE_SEC 3600 623 624 #define SCTP_RTO_UPPER_BOUND (60000) /* 60 sec in ms */ 625 #define SCTP_RTO_LOWER_BOUND (1000) /* 1 sec is ms */ 626 #define SCTP_RTO_INITIAL (3000) /* 3 sec in ms */ 627 628 629 #define SCTP_INP_KILL_TIMEOUT 20/* number of ms to retry kill of inpcb */ 630 #define SCTP_ASOC_KILL_TIMEOUT 10 /* number of ms to retry kill of inpcb */ 631 632 #define SCTP_DEF_MAX_INIT 8 633 #define SCTP_DEF_MAX_SEND 10 634 #define SCTP_DEF_MAX_PATH_RTX 5 635 #define SCTP_DEF_PATH_PF_THRESHOLD SCTP_DEF_MAX_PATH_RTX 636 637 #define SCTP_DEF_PMTU_RAISE_SEC 600 /* 10 min between raise attempts */ 638 639 640 /* How many streams I request initially by default */ 641 #define SCTP_OSTREAM_INITIAL 10 642 #define SCTP_ISTREAM_INITIAL 2048 643 644 /* 645 * How many smallest_mtu's need to increase before a window update sack is 646 * sent (should be a power of 2). 647 */ 648 /* Send window update (incr * this > hiwat). Should be a power of 2 */ 649 #define SCTP_MINIMAL_RWND (4096) /* minimal rwnd */ 650 651 #define SCTP_ADDRMAX 16 652 653 /* SCTP DEBUG Switch parameters */ 654 #define SCTP_DEBUG_TIMER1 0x00000001 655 #define SCTP_DEBUG_TIMER2 0x00000002 /* unused */ 656 #define SCTP_DEBUG_TIMER3 0x00000004 /* unused */ 657 #define SCTP_DEBUG_TIMER4 0x00000008 658 #define SCTP_DEBUG_OUTPUT1 0x00000010 659 #define SCTP_DEBUG_OUTPUT2 0x00000020 660 #define SCTP_DEBUG_OUTPUT3 0x00000040 661 #define SCTP_DEBUG_OUTPUT4 0x00000080 662 #define SCTP_DEBUG_UTIL1 0x00000100 663 #define SCTP_DEBUG_UTIL2 0x00000200 /* unused */ 664 #define SCTP_DEBUG_AUTH1 0x00000400 665 #define SCTP_DEBUG_AUTH2 0x00000800 /* unused */ 666 #define SCTP_DEBUG_INPUT1 0x00001000 667 #define SCTP_DEBUG_INPUT2 0x00002000 668 #define SCTP_DEBUG_INPUT3 0x00004000 669 #define SCTP_DEBUG_INPUT4 0x00008000 /* unused */ 670 #define SCTP_DEBUG_ASCONF1 0x00010000 671 #define SCTP_DEBUG_ASCONF2 0x00020000 672 #define SCTP_DEBUG_OUTPUT5 0x00040000 /* unused */ 673 #define SCTP_DEBUG_XXX 0x00080000 /* unused */ 674 #define SCTP_DEBUG_PCB1 0x00100000 675 #define SCTP_DEBUG_PCB2 0x00200000 /* unused */ 676 #define SCTP_DEBUG_PCB3 0x00400000 677 #define SCTP_DEBUG_PCB4 0x00800000 678 #define SCTP_DEBUG_INDATA1 0x01000000 679 #define SCTP_DEBUG_INDATA2 0x02000000 /* unused */ 680 #define SCTP_DEBUG_INDATA3 0x04000000 /* unused */ 681 #define SCTP_DEBUG_CRCOFFLOAD 0x08000000 /* unused */ 682 #define SCTP_DEBUG_USRREQ1 0x10000000 /* unused */ 683 #define SCTP_DEBUG_USRREQ2 0x20000000 /* unused */ 684 #define SCTP_DEBUG_PEEL1 0x40000000 685 #define SCTP_DEBUG_XXXXX 0x80000000 /* unused */ 686 #define SCTP_DEBUG_ALL 0x7ff3ffff 687 #define SCTP_DEBUG_NOISY 0x00040000 688 689 /* What sender needs to see to avoid SWS or we consider peers rwnd 0 */ 690 #define SCTP_SWS_SENDER_DEF 1420 691 692 /* 693 * SWS is scaled to the sb_hiwat of the socket. A value of 2 is hiwat/4, 1 694 * would be hiwat/2 etc. 695 */ 696 /* What receiver needs to see in sockbuf or we tell peer its 1 */ 697 #define SCTP_SWS_RECEIVER_DEF 3000 698 699 #define SCTP_INITIAL_CWND 4380 700 701 #define SCTP_DEFAULT_MTU 1500 /* emergency default MTU */ 702 /* amount peer is obligated to have in rwnd or I will abort */ 703 #define SCTP_MIN_RWND 1500 704 705 #define SCTP_DEFAULT_MAXSEGMENT 65535 706 707 #define SCTP_CHUNK_BUFFER_SIZE 512 708 #define SCTP_PARAM_BUFFER_SIZE 512 709 710 /* small chunk store for looking at chunk_list in auth */ 711 #define SCTP_SMALL_CHUNK_STORE 260 712 713 #define SCTP_HOW_MANY_SECRETS 2 /* how many secrets I keep */ 714 715 #define SCTP_NUMBER_OF_SECRETS 8 /* or 8 * 4 = 32 octets */ 716 #define SCTP_SECRET_SIZE 32 /* number of octets in a 256 bits */ 717 718 719 /* 720 * SCTP upper layer notifications 721 */ 722 #define SCTP_NOTIFY_ASSOC_UP 1 723 #define SCTP_NOTIFY_ASSOC_DOWN 2 724 #define SCTP_NOTIFY_INTERFACE_DOWN 3 725 #define SCTP_NOTIFY_INTERFACE_UP 4 726 #define SCTP_NOTIFY_SENT_DG_FAIL 5 727 #define SCTP_NOTIFY_UNSENT_DG_FAIL 6 728 #define SCTP_NOTIFY_SPECIAL_SP_FAIL 7 729 #define SCTP_NOTIFY_ASSOC_LOC_ABORTED 8 730 #define SCTP_NOTIFY_ASSOC_REM_ABORTED 9 731 #define SCTP_NOTIFY_ASSOC_RESTART 10 732 #define SCTP_NOTIFY_PEER_SHUTDOWN 11 733 #define SCTP_NOTIFY_ASCONF_ADD_IP 12 734 #define SCTP_NOTIFY_ASCONF_DELETE_IP 13 735 #define SCTP_NOTIFY_ASCONF_SET_PRIMARY 14 736 #define SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION 15 737 #define SCTP_NOTIFY_INTERFACE_CONFIRMED 16 738 #define SCTP_NOTIFY_STR_RESET_RECV 17 739 #define SCTP_NOTIFY_STR_RESET_SEND 18 740 #define SCTP_NOTIFY_STR_RESET_FAILED_OUT 19 741 #define SCTP_NOTIFY_STR_RESET_FAILED_IN 20 742 #define SCTP_NOTIFY_STR_RESET_DENIED_OUT 21 743 #define SCTP_NOTIFY_STR_RESET_DENIED_IN 22 744 #define SCTP_NOTIFY_AUTH_NEW_KEY 23 745 #define SCTP_NOTIFY_AUTH_FREE_KEY 24 746 #define SCTP_NOTIFY_NO_PEER_AUTH 25 747 #define SCTP_NOTIFY_SENDER_DRY 26 748 #define SCTP_NOTIFY_REMOTE_ERROR 27 749 750 /* This is the value for messages that are NOT completely 751 * copied down where we will start to split the message. 752 * So, with our default, we split only if the piece we 753 * want to take will fill up a full MTU (assuming 754 * a 1500 byte MTU). 755 */ 756 #define SCTP_DEFAULT_SPLIT_POINT_MIN 2904 757 758 /* Maximum length of diagnostic information in error causes */ 759 #define SCTP_DIAG_INFO_LEN 128 760 761 /* ABORT CODES and other tell-tale location 762 * codes are generated by adding the below 763 * to the instance id. 764 */ 765 766 /* File defines */ 767 #define SCTP_FROM_SCTP_INPUT 0x10000000 768 #define SCTP_FROM_SCTP_PCB 0x20000000 769 #define SCTP_FROM_SCTP_INDATA 0x30000000 770 #define SCTP_FROM_SCTP_TIMER 0x40000000 771 #define SCTP_FROM_SCTP_USRREQ 0x50000000 772 #define SCTP_FROM_SCTPUTIL 0x60000000 773 #define SCTP_FROM_SCTP6_USRREQ 0x70000000 774 #define SCTP_FROM_SCTP_ASCONF 0x80000000 775 #define SCTP_FROM_SCTP_OUTPUT 0x90000000 776 #define SCTP_FROM_SCTP_PEELOFF 0xa0000000 777 #define SCTP_FROM_SCTP_PANDA 0xb0000000 778 #define SCTP_FROM_SCTP_SYSCTL 0xc0000000 779 #define SCTP_FROM_SCTP_CC_FUNCTIONS 0xd0000000 780 781 /* Location ID's */ 782 #define SCTP_LOC_1 0x00000001 783 #define SCTP_LOC_2 0x00000002 784 #define SCTP_LOC_3 0x00000003 785 #define SCTP_LOC_4 0x00000004 786 #define SCTP_LOC_5 0x00000005 787 #define SCTP_LOC_6 0x00000006 788 #define SCTP_LOC_7 0x00000007 789 #define SCTP_LOC_8 0x00000008 790 #define SCTP_LOC_9 0x00000009 791 #define SCTP_LOC_10 0x0000000a 792 #define SCTP_LOC_11 0x0000000b 793 #define SCTP_LOC_12 0x0000000c 794 #define SCTP_LOC_13 0x0000000d 795 #define SCTP_LOC_14 0x0000000e 796 #define SCTP_LOC_15 0x0000000f 797 #define SCTP_LOC_16 0x00000010 798 #define SCTP_LOC_17 0x00000011 799 #define SCTP_LOC_18 0x00000012 800 #define SCTP_LOC_19 0x00000013 801 #define SCTP_LOC_20 0x00000014 802 #define SCTP_LOC_21 0x00000015 803 #define SCTP_LOC_22 0x00000016 804 #define SCTP_LOC_23 0x00000017 805 #define SCTP_LOC_24 0x00000018 806 #define SCTP_LOC_25 0x00000019 807 #define SCTP_LOC_26 0x0000001a 808 #define SCTP_LOC_27 0x0000001b 809 #define SCTP_LOC_28 0x0000001c 810 #define SCTP_LOC_29 0x0000001d 811 #define SCTP_LOC_30 0x0000001e 812 #define SCTP_LOC_31 0x0000001f 813 #define SCTP_LOC_32 0x00000020 814 #define SCTP_LOC_33 0x00000021 815 #define SCTP_LOC_34 0x00000022 816 #define SCTP_LOC_35 0x00000023 817 818 819 /* Free assoc codes */ 820 #define SCTP_NORMAL_PROC 0 821 #define SCTP_PCBFREE_NOFORCE 1 822 #define SCTP_PCBFREE_FORCE 2 823 824 /* From codes for adding addresses */ 825 #define SCTP_ADDR_IS_CONFIRMED 8 826 #define SCTP_ADDR_DYNAMIC_ADDED 6 827 #define SCTP_IN_COOKIE_PROC 100 828 #define SCTP_ALLOC_ASOC 1 829 #define SCTP_LOAD_ADDR_2 2 830 #define SCTP_LOAD_ADDR_3 3 831 #define SCTP_LOAD_ADDR_4 4 832 #define SCTP_LOAD_ADDR_5 5 833 834 #define SCTP_DONOT_SETSCOPE 0 835 #define SCTP_DO_SETSCOPE 1 836 837 838 /* This value determines the default for when 839 * we try to add more on the send queue., if 840 * there is room. This prevents us from cycling 841 * into the copy_resume routine to often if 842 * we have not got enough space to add a decent 843 * enough size message. Note that if we have enough 844 * space to complete the message copy we will always 845 * add to the message, no matter what the size. Its 846 * only when we reach the point that we have some left 847 * to add, there is only room for part of it that we 848 * will use this threshold. Its also a sysctl. 849 */ 850 #define SCTP_DEFAULT_ADD_MORE 1452 851 852 #ifndef SCTP_PCBHASHSIZE 853 /* default number of association hash buckets in each endpoint */ 854 #define SCTP_PCBHASHSIZE 256 855 #endif 856 #ifndef SCTP_TCBHASHSIZE 857 #define SCTP_TCBHASHSIZE 1024 858 #endif 859 860 #ifndef SCTP_CHUNKQUEUE_SCALE 861 #define SCTP_CHUNKQUEUE_SCALE 10 862 #endif 863 864 /* clock variance is 1 ms */ 865 #define SCTP_CLOCK_GRANULARITY 1 866 #define IP_HDR_SIZE 40 /* we use the size of a IP6 header here this 867 * detracts a small amount for ipv4 but it 868 * simplifies the ipv6 addition */ 869 870 /* Argument magic number for sctp_inpcb_free() */ 871 872 /* third argument */ 873 #define SCTP_CALLED_DIRECTLY_NOCMPSET 0 874 #define SCTP_CALLED_AFTER_CMPSET_OFCLOSE 1 875 #define SCTP_CALLED_FROM_INPKILL_TIMER 2 876 /* second argument */ 877 #define SCTP_FREE_SHOULD_USE_ABORT 1 878 #define SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE 0 879 880 #ifndef IPPROTO_SCTP 881 #define IPPROTO_SCTP 132 /* the Official IANA number :-) */ 882 #endif /* !IPPROTO_SCTP */ 883 884 #define SCTP_MAX_DATA_BUNDLING 256 885 886 /* modular comparison */ 887 /* See RFC 1982 for details. */ 888 #define SCTP_UINT16_GT(a, b) (((a < b) && ((uint16_t)(b - a) > (1U<<15))) || \ 889 ((a > b) && ((uint16_t)(a - b) < (1U<<15)))) 890 #define SCTP_UINT16_GE(a, b) (SCTP_UINT16_GT(a, b) || (a == b)) 891 #define SCTP_UINT32_GT(a, b) (((a < b) && ((uint32_t)(b - a) > (1U<<31))) || \ 892 ((a > b) && ((uint32_t)(a - b) < (1U<<31)))) 893 #define SCTP_UINT32_GE(a, b) (SCTP_UINT32_GT(a, b) || (a == b)) 894 895 #define SCTP_SSN_GT(a, b) SCTP_UINT16_GT(a, b) 896 #define SCTP_SSN_GE(a, b) SCTP_UINT16_GE(a, b) 897 #define SCTP_TSN_GT(a, b) SCTP_UINT32_GT(a, b) 898 #define SCTP_TSN_GE(a, b) SCTP_UINT32_GE(a, b) 899 #define SCTP_MID_GT(i, a, b) (((i) == 1) ? SCTP_UINT32_GT(a, b) : SCTP_UINT16_GT((uint16_t)a, (uint16_t)b)) 900 #define SCTP_MID_GE(i, a, b) (((i) == 1) ? SCTP_UINT32_GE(a, b) : SCTP_UINT16_GE((uint16_t)a, (uint16_t)b)) 901 #define SCTP_MID_EQ(i, a, b) (((i) == 1) ? a == b : (uint16_t)a == (uint16_t)b) 902 903 /* Mapping array manipulation routines */ 904 #define SCTP_IS_TSN_PRESENT(arry, gap) ((arry[(gap >> 3)] >> (gap & 0x07)) & 0x01) 905 #define SCTP_SET_TSN_PRESENT(arry, gap) (arry[(gap >> 3)] |= (0x01 << ((gap & 0x07)))) 906 #define SCTP_UNSET_TSN_PRESENT(arry, gap) (arry[(gap >> 3)] &= ((~(0x01 << ((gap & 0x07)))) & 0xff)) 907 #define SCTP_CALC_TSN_TO_GAP(gap, tsn, mapping_tsn) do { \ 908 if (tsn >= mapping_tsn) { \ 909 gap = tsn - mapping_tsn; \ 910 } else { \ 911 gap = (MAX_TSN - mapping_tsn) + tsn + 1; \ 912 } \ 913 } while (0) 914 915 916 #define SCTP_RETRAN_DONE -1 917 #define SCTP_RETRAN_EXIT -2 918 919 /* 920 * This value defines the number of vtag block time wait entry's per list 921 * element. Each entry will take 2 4 byte ints (and of course the overhead 922 * of the next pointer as well). Using 15 as an example will yield * ((8 * 923 * 15) + 8) or 128 bytes of overhead for each timewait block that gets 924 * initialized. Increasing it to 31 would yield 256 bytes per block. 925 */ 926 #define SCTP_NUMBER_IN_VTAG_BLOCK 15 927 /* 928 * If we use the STACK option, we have an array of this size head pointers. 929 * This array is mod'd the with the size to find which bucket and then all 930 * entries must be searched to see if the tag is in timed wait. If so we 931 * reject it. 932 */ 933 #define SCTP_STACK_VTAG_HASH_SIZE 32 934 935 /* 936 * Number of seconds of time wait for a vtag. 937 */ 938 #define SCTP_TIME_WAIT 60 939 940 /* How many micro seconds is the cutoff from 941 * local lan type rtt's 942 */ 943 /* 944 * We allow 900us for the rtt. 945 */ 946 #define SCTP_LOCAL_LAN_RTT 900 947 #define SCTP_LAN_UNKNOWN 0 948 #define SCTP_LAN_LOCAL 1 949 #define SCTP_LAN_INTERNET 2 950 951 #define SCTP_SEND_BUFFER_SPLITTING 0x00000001 952 #define SCTP_RECV_BUFFER_SPLITTING 0x00000002 953 954 /* The system retains a cache of free chunks such to 955 * cut down on calls the memory allocation system. There 956 * is a per association limit of free items and a overall 957 * system limit. If either one gets hit then the resource 958 * stops being cached. 959 */ 960 961 #define SCTP_DEF_ASOC_RESC_LIMIT 10 962 #define SCTP_DEF_SYSTEM_RESC_LIMIT 1000 963 964 /*- 965 * defines for socket lock states. 966 * Used by __APPLE__ and SCTP_SO_LOCK_TESTING 967 */ 968 #define SCTP_SO_LOCKED 1 969 #define SCTP_SO_NOT_LOCKED 0 970 971 972 /*- 973 * For address locks, do we hold the lock? 974 */ 975 #define SCTP_ADDR_LOCKED 1 976 #define SCTP_ADDR_NOT_LOCKED 0 977 978 #define IN4_ISPRIVATE_ADDRESS(a) \ 979 ((((uint8_t *)&(a)->s_addr)[0] == 10) || \ 980 ((((uint8_t *)&(a)->s_addr)[0] == 172) && \ 981 (((uint8_t *)&(a)->s_addr)[1] >= 16) && \ 982 (((uint8_t *)&(a)->s_addr)[1] <= 32)) || \ 983 ((((uint8_t *)&(a)->s_addr)[0] == 192) && \ 984 (((uint8_t *)&(a)->s_addr)[1] == 168))) 985 986 #define IN4_ISLOOPBACK_ADDRESS(a) \ 987 (((uint8_t *)&(a)->s_addr)[0] == 127) 988 989 #define IN4_ISLINKLOCAL_ADDRESS(a) \ 990 ((((uint8_t *)&(a)->s_addr)[0] == 169) && \ 991 (((uint8_t *)&(a)->s_addr)[1] == 254)) 992 993 994 #if defined(_KERNEL) 995 #define SCTP_GETTIME_TIMEVAL(x) (getmicrouptime(x)) 996 #define SCTP_GETPTIME_TIMEVAL(x) (microuptime(x)) 997 #endif 998 999 #if defined(_KERNEL) || defined(__Userspace__) 1000 #define sctp_sowwakeup(inp, so) \ 1001 do { \ 1002 if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \ 1003 inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEOUTPUT; \ 1004 } else { \ 1005 sowwakeup(so); \ 1006 } \ 1007 } while (0) 1008 1009 #define sctp_sowwakeup_locked(inp, so) \ 1010 do { \ 1011 if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \ 1012 SOCKBUF_UNLOCK(&((so)->so_snd)); \ 1013 inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEOUTPUT; \ 1014 } else { \ 1015 sowwakeup_locked(so); \ 1016 } \ 1017 } while (0) 1018 1019 #define sctp_sorwakeup(inp, so) \ 1020 do { \ 1021 if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \ 1022 inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEINPUT; \ 1023 } else { \ 1024 sorwakeup(so); \ 1025 } \ 1026 } while (0) 1027 1028 #define sctp_sorwakeup_locked(inp, so) \ 1029 do { \ 1030 if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \ 1031 inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEINPUT; \ 1032 SOCKBUF_UNLOCK(&((so)->so_rcv)); \ 1033 } else { \ 1034 sorwakeup_locked(so); \ 1035 } \ 1036 } while (0) 1037 1038 #endif /* _KERNEL || __Userspace__ */ 1039 #endif 1040