1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _INET_SCTP_SCTP_IMPL_H 28 #define _INET_SCTP_SCTP_IMPL_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 #include <sys/inttypes.h> 37 #include <sys/taskq.h> 38 #include <sys/list.h> 39 #include <sys/strsun.h> 40 #include <netinet/ip6.h> 41 #include <inet/optcom.h> 42 #include <netinet/sctp.h> 43 #include <inet/sctp_itf.h> 44 45 /* Streams device identifying info and version */ 46 #define SCTP_DEV_IDINFO "SCTP Streams device 1.0" 47 48 #define SSN_GT(a, b) ((int16_t)((a)-(b)) > 0) 49 #define SSN_GE(a, b) ((int16_t)((a)-(b)) >= 0) 50 51 /* Default buffer size and flow control wake up threshold. */ 52 #define SCTP_XMIT_LOWATER 8192 53 #define SCTP_XMIT_HIWATER 102400 54 #define SCTP_RECV_LOWATER 8192 55 #define SCTP_RECV_HIWATER 102400 56 57 /* SCTP Timer control structure */ 58 typedef struct sctpt_s { 59 pfv_t sctpt_pfv; /* The routine we are to call */ 60 struct sctp_s *sctpt_sctp; /* The parameter we are to pass in */ 61 struct sctp_faddr_s *sctpt_faddr; 62 } sctpt_t; 63 64 /* 65 * faddr timer mblks are not allocated until first use. This macro 66 * will allocate the timer mblk if necessary, set the faddr, and then 67 * start the timer. 68 */ 69 #define SCTP_FADDR_TIMER_RESTART(sctp, fp, intvl) \ 70 if ((fp)->timer_mp == NULL) { \ 71 (fp)->timer_mp = sctp_timer_alloc((sctp), sctp_rexmit_timer); \ 72 } \ 73 if ((fp)->timer_mp != NULL) { \ 74 ((sctpt_t *)((fp)->timer_mp->b_rptr))->sctpt_faddr = fp; \ 75 dprint(3, ("faddr_timer_restart: fp=%p %x:%x:%x:%x %d\n", \ 76 (fp), SCTP_PRINTADDR((fp)->faddr), \ 77 (int)(intvl))); \ 78 sctp_timer((sctp), (fp)->timer_mp, (intvl)); \ 79 (fp)->timer_running = 1; \ 80 } 81 82 #define SCTP_FADDR_TIMER_STOP(fp) \ 83 if ((fp)->timer_running && (fp)->timer_mp != NULL) { \ 84 sctp_timer_stop((fp)->timer_mp); \ 85 (fp)->timer_running = 0; \ 86 } 87 88 #define SCTP_CALC_RXT(fp, max) \ 89 { \ 90 if (((fp)->rto <<= 1) > (max)) \ 91 (fp)->rto = (max); \ 92 } 93 94 /* 95 * Maximum number of duplicate TSNs we can report. This is currently 96 * static, and governs the size of the mblk used to hold the duplicate 97 * reports. The use of duplcate TSN reports is currently experimental, 98 * so for now a static limit should suffice. 99 */ 100 #define SCTP_DUP_MBLK_SZ 64 101 102 #define SCTP_IS_ADDR_UNSPEC(isv4, addr) \ 103 ((isv4) ? IN6_IS_ADDR_V4MAPPED_ANY(&(addr)) : \ 104 IN6_IS_ADDR_UNSPECIFIED(&(addr))) 105 106 extern int sctp_g_num_epriv_ports; 107 extern uint16_t sctp_g_epriv_ports[]; 108 extern kmutex_t sctp_epriv_port_lock; 109 110 extern uint_t sctp_next_port_to_try; 111 /* 112 * SCTP parameters 113 */ 114 /* Named Dispatch Parameter Management Structure */ 115 typedef struct sctpparam_s { 116 uint32_t sctp_param_min; 117 uint32_t sctp_param_max; 118 uint32_t sctp_param_val; 119 char *sctp_param_name; 120 } sctpparam_t; 121 122 extern sctpparam_t sctp_param_arr[]; 123 #define sctp_max_init_retr sctp_param_arr[0].sctp_param_val 124 #define sctp_max_init_retr_high sctp_param_arr[0].sctp_param_max 125 #define sctp_max_init_retr_low sctp_param_arr[0].sctp_param_min 126 #define sctp_pa_max_retr sctp_param_arr[1].sctp_param_val 127 #define sctp_pa_max_retr_high sctp_param_arr[1].sctp_param_max 128 #define sctp_pa_max_retr_low sctp_param_arr[1].sctp_param_min 129 #define sctp_pp_max_retr sctp_param_arr[2].sctp_param_val 130 #define sctp_pp_max_retr_high sctp_param_arr[2].sctp_param_max 131 #define sctp_pp_max_retr_low sctp_param_arr[2].sctp_param_min 132 #define sctp_cwnd_max_ sctp_param_arr[3].sctp_param_val 133 #define sctp_dbg sctp_param_arr[4].sctp_param_val 134 #define sctp_smallest_nonpriv_port sctp_param_arr[5].sctp_param_val 135 #define sctp_ipv4_ttl sctp_param_arr[6].sctp_param_val 136 #define sctp_heartbeat_interval sctp_param_arr[7].sctp_param_val 137 #define sctp_heartbeat_interval_high sctp_param_arr[7].sctp_param_max 138 #define sctp_heartbeat_interval_low sctp_param_arr[7].sctp_param_min 139 #define sctp_initial_mtu sctp_param_arr[8].sctp_param_val 140 #define sctp_mtu_probe_interval sctp_param_arr[9].sctp_param_val 141 #define sctp_new_secret_interval sctp_param_arr[10].sctp_param_val 142 #define sctp_deferred_ack_interval sctp_param_arr[11].sctp_param_val 143 #define sctp_snd_lowat_fraction sctp_param_arr[12].sctp_param_val 144 #define sctp_ignore_path_mtu sctp_param_arr[13].sctp_param_val 145 #define sctp_initial_ssthresh sctp_param_arr[14].sctp_param_val 146 #define sctp_smallest_anon_port sctp_param_arr[15].sctp_param_val 147 #define sctp_largest_anon_port sctp_param_arr[16].sctp_param_val 148 #define sctp_xmit_hiwat sctp_param_arr[17].sctp_param_val 149 #define sctp_xmit_lowat sctp_param_arr[18].sctp_param_val 150 #define sctp_recv_hiwat sctp_param_arr[19].sctp_param_val 151 #define sctp_max_buf sctp_param_arr[20].sctp_param_val 152 #define sctp_rtt_updates sctp_param_arr[21].sctp_param_val 153 #define sctp_ipv6_hoplimit sctp_param_arr[22].sctp_param_val 154 #define sctp_rto_ming sctp_param_arr[23].sctp_param_val 155 #define sctp_rto_ming_high sctp_param_arr[23].sctp_param_max 156 #define sctp_rto_ming_low sctp_param_arr[23].sctp_param_min 157 #define sctp_rto_maxg sctp_param_arr[24].sctp_param_val 158 #define sctp_rto_maxg_high sctp_param_arr[24].sctp_param_max 159 #define sctp_rto_maxg_low sctp_param_arr[24].sctp_param_min 160 #define sctp_rto_initialg sctp_param_arr[25].sctp_param_val 161 #define sctp_rto_initialg_high sctp_param_arr[25].sctp_param_max 162 #define sctp_rto_initialg_low sctp_param_arr[25].sctp_param_min 163 #define sctp_cookie_life sctp_param_arr[26].sctp_param_val 164 #define sctp_cookie_life_high sctp_param_arr[26].sctp_param_max 165 #define sctp_cookie_life_low sctp_param_arr[26].sctp_param_min 166 #define sctp_max_in_streams sctp_param_arr[27].sctp_param_val 167 #define sctp_max_in_streams_high sctp_param_arr[27].sctp_param_max 168 #define sctp_max_in_streams_low sctp_param_arr[27].sctp_param_min 169 #define sctp_initial_out_streams sctp_param_arr[28].sctp_param_val 170 #define sctp_initial_out_streams_high sctp_param_arr[28].sctp_param_max 171 #define sctp_initial_out_streams_low sctp_param_arr[28].sctp_param_min 172 #define sctp_shutack_wait_bound sctp_param_arr[29].sctp_param_val 173 #define sctp_maxburst sctp_param_arr[30].sctp_param_val 174 #define sctp_addip_enabled sctp_param_arr[31].sctp_param_val 175 #define sctp_recv_hiwat_minmss sctp_param_arr[32].sctp_param_val 176 #define sctp_slow_start_initial sctp_param_arr[33].sctp_param_val 177 #define sctp_slow_start_after_idle sctp_param_arr[34].sctp_param_val 178 #define sctp_prsctp_enabled sctp_param_arr[35].sctp_param_val 179 #define sctp_fast_rxt_thresh sctp_param_arr[36].sctp_param_val 180 /* 181 * sctp_wroff_xtra is the extra space in front of SCTP/IP header for link 182 * layer header. It has to be a multiple of 4. 183 */ 184 extern sctpparam_t sctp_wroff_xtra_param; 185 #define sctp_wroff_xtra sctp_wroff_xtra_param.sctp_param_val 186 187 #define SCTP_MAX_COMBINED_HEADER_LENGTH (60 + 12) /* Maxed out ip + sctp */ 188 #define SCTP_MAX_IP_OPTIONS_LENGTH (60 - IP_SIMPLE_HDR_LENGTH) 189 #define SCTP_MAX_HDR_LENGTH 60 190 191 #define SCTP_SECRET_LEN 16 192 193 #define SCTP_REFHOLD(sctp) { \ 194 mutex_enter(&(sctp)->sctp_reflock); \ 195 (sctp)->sctp_refcnt++; \ 196 ASSERT((sctp)->sctp_refcnt != 0); \ 197 mutex_exit(&(sctp)->sctp_reflock); \ 198 } 199 200 #define SCTP_REFRELE(sctp) { \ 201 mutex_enter(&(sctp)->sctp_reflock); \ 202 ASSERT((sctp)->sctp_refcnt != 0); \ 203 if (--(sctp)->sctp_refcnt == 0) { \ 204 mutex_exit(&(sctp)->sctp_reflock); \ 205 CONN_DEC_REF((sctp)->sctp_connp); \ 206 } else { \ 207 mutex_exit(&(sctp)->sctp_reflock); \ 208 } \ 209 } 210 211 #define SCTP_PRINTADDR(a) (a).s6_addr32[0], (a).s6_addr32[1],\ 212 (a).s6_addr32[2], (a).s6_addr32[3] 213 214 #define CONN2SCTP(conn) ((sctp_t *)(&((conn_t *)conn)[1])) 215 216 /* 217 * Outbound data, flags and macros for per-message, per-chunk info 218 */ 219 typedef struct { 220 int64_t smh_ttl; /* Time to Live */ 221 int64_t smh_tob; /* Time of Birth */ 222 uint32_t smh_context; 223 uint16_t smh_sid; 224 uint16_t smh_ssn; 225 uint32_t smh_ppid; 226 uint16_t smh_flags; 227 uint32_t smh_msglen; 228 } sctp_msg_hdr_t; 229 230 #define SCTP_CHUNK_FLAG_SENT 0x01 231 #define SCTP_CHUNK_FLAG_REXMIT 0x02 232 #define SCTP_CHUNK_FLAG_ACKED 0x04 233 #define SCTP_MSG_FLAG_CHUNKED 0x08 234 #define SCTP_MSG_FLAG_ABANDONED 0x10 235 #define SCTP_CHUNK_FLAG_ABANDONED 0x20 236 237 #define SCTP_CHUNK_CLEAR_FLAGS(mp) ((mp)->b_flag = 0) 238 /* 239 * If we are transmitting the chunk for the first time we assign the TSN and 240 * SSN here. The reason we assign the SSN here (as opposed to doing it in 241 * sctp_chunkify()) is that the chunk may expire, if PRSCTP is enabled, before 242 * we get a chance to send it out. If we assign the SSN in sctp_chunkify() 243 * and this happens, then we need to send a Forward TSN to the peer, which 244 * will be expecting this SSN, assuming ordered. If we assign it here we 245 * can just take out the chunk from the transmit list without having to 246 * send a Forward TSN chunk. While assigning the SSN we use (meta)->b_cont 247 * to determine if it needs a new SSN (i.e. the next SSN for the stream), 248 * since (meta)->b_cont signifies the first chunk of a message (if the message 249 * is unordered, then the SSN is 0). 250 * 251 */ 252 #define SCTP_CHUNK_SENT(sctp, mp, sdc, fp, chunkdata, meta) { \ 253 if (!SCTP_CHUNK_ISSENT(mp)) { \ 254 sctp_msg_hdr_t *mhdr = (sctp_msg_hdr_t *)(meta)->b_rptr; \ 255 ASSERT(!SCTP_CHUNK_ABANDONED(mp)); \ 256 (mp)->b_flag = SCTP_CHUNK_FLAG_SENT; \ 257 (sdc)->sdh_tsn = htonl((sctp)->sctp_ltsn++); \ 258 if ((mhdr)->smh_flags & MSG_UNORDERED) { \ 259 (sdc)->sdh_ssn = 0; \ 260 SCTP_DATA_SET_UBIT(sdc); \ 261 BUMP_LOCAL((sctp)->sctp_oudchunks); \ 262 } else { \ 263 BUMP_LOCAL((sctp)->sctp_odchunks); \ 264 if ((mp) == (meta)->b_cont) { \ 265 mhdr->smh_ssn = htons( \ 266 (sctp)->sctp_ostrcntrs[mhdr->smh_sid]++); \ 267 } \ 268 (sdc)->sdh_ssn = mhdr->smh_ssn; \ 269 } \ 270 (sctp)->sctp_unacked += (chunkdata); \ 271 (sctp)->sctp_unsent -= (chunkdata); \ 272 (sctp)->sctp_frwnd -= (chunkdata); \ 273 } else { \ 274 if (SCTP_CHUNK_ISACKED(mp)) { \ 275 (sctp)->sctp_unacked += (chunkdata); \ 276 } else { \ 277 ASSERT(SCTP_CHUNK_DEST(mp)->suna >= ((chunkdata) + \ 278 sizeof (*sdc))); \ 279 SCTP_CHUNK_DEST(mp)->suna -= ((chunkdata) + \ 280 sizeof (*sdc)); \ 281 } \ 282 (mp)->b_flag &= ~(SCTP_CHUNK_FLAG_REXMIT | \ 283 SCTP_CHUNK_FLAG_ACKED); \ 284 SCTP_CHUNK_SET_SACKCNT(mp, 0); \ 285 BUMP_LOCAL(sctp->sctp_rxtchunks); \ 286 BUMP_LOCAL((sctp)->sctp_T3expire); \ 287 BUMP_LOCAL((fp)->T3expire); \ 288 } \ 289 SCTP_SET_CHUNK_DEST(mp, fp); \ 290 (fp)->suna += ((chunkdata) + sizeof (*sdc)); \ 291 } 292 293 #define SCTP_CHUNK_ISSENT(mp) ((mp)->b_flag & SCTP_CHUNK_FLAG_SENT) 294 #define SCTP_CHUNK_CANSEND(mp) \ 295 (!(SCTP_CHUNK_ABANDONED(mp)) && \ 296 (((mp)->b_flag & (SCTP_CHUNK_FLAG_REXMIT|SCTP_CHUNK_FLAG_SENT)) != \ 297 SCTP_CHUNK_FLAG_SENT)) 298 299 #define SCTP_CHUNK_DEST(mp) ((sctp_faddr_t *)(mp)->b_queue) 300 #define SCTP_SET_CHUNK_DEST(mp, fp) ((mp)->b_queue = (queue_t *)fp) 301 302 #define SCTP_CHUNK_REXMIT(mp) ((mp)->b_flag |= SCTP_CHUNK_FLAG_REXMIT) 303 #define SCTP_CHUNK_CLEAR_REXMIT(mp) ((mp)->b_flag &= ~SCTP_CHUNK_FLAG_REXMIT) 304 #define SCTP_CHUNK_WANT_REXMIT(mp) ((mp)->b_flag & SCTP_CHUNK_FLAG_REXMIT) 305 306 #define SCTP_CHUNK_ACKED(mp) \ 307 ((mp)->b_flag = (SCTP_CHUNK_FLAG_SENT|SCTP_CHUNK_FLAG_ACKED)) 308 #define SCTP_CHUNK_ISACKED(mp) ((mp)->b_flag & SCTP_CHUNK_FLAG_ACKED) 309 #define SCTP_CHUNK_CLEAR_ACKED(mp) ((mp)->b_flag &= ~SCTP_CHUNK_FLAG_ACKED) 310 311 #define SCTP_CHUNK_SACKCNT(mp) ((intptr_t)((mp)->b_prev)) 312 #define SCTP_CHUNK_SET_SACKCNT(mp, val) ((mp)->b_prev = \ 313 (mblk_t *)(uintptr_t)(val)) 314 315 #define SCTP_MSG_SET_CHUNKED(mp) ((mp)->b_flag |= SCTP_MSG_FLAG_CHUNKED) 316 #define SCTP_MSG_CLEAR_CHUNKED(mp)((mp)->b_flag &= ~SCTP_MSG_FLAG_CHUNKED) 317 #define SCTP_IS_MSG_CHUNKED(mp) ((mp)->b_flag & SCTP_MSG_FLAG_CHUNKED) 318 319 /* For PR-SCTP */ 320 #define SCTP_ABANDON_CHUNK(mp) ((mp)->b_flag |= SCTP_CHUNK_FLAG_ABANDONED) 321 #define SCTP_CHUNK_ABANDONED(mp) \ 322 ((mp)->b_flag & SCTP_CHUNK_FLAG_ABANDONED) 323 324 #define SCTP_MSG_SET_ABANDONED(mp) \ 325 ((mp)->b_flag |= SCTP_MSG_FLAG_ABANDONED) 326 #define SCTP_MSG_CLEAR_ABANDONED(mp)((mp)->b_flag &= ~SCTP_MSG_FLAG_ABANDONED) 327 #define SCTP_IS_MSG_ABANDONED(mp) ((mp)->b_flag & SCTP_MSG_FLAG_ABANDONED) 328 329 /* 330 * Check if a message has expired. A message is expired if 331 * 1. It has a non-zero time to live value and has not been sent before 332 * that time expires. 333 * 2. It is sent using PRSCTP and it has not been SACK'ed before 334 * its lifetime expires. 335 */ 336 #define SCTP_MSG_TO_BE_ABANDONED(meta, mhdr, sctp) \ 337 (((!SCTP_CHUNK_ISSENT((meta)->b_cont) && (mhdr)->smh_ttl > 0) || \ 338 ((sctp)->sctp_prsctp_aware && ((mhdr)->smh_flags & MSG_PR_SCTP))) && \ 339 ((lbolt64 - (mhdr)->smh_tob) > (mhdr)->smh_ttl)) 340 341 /* SCTP association hash function. */ 342 #define SCTP_CONN_HASH(ports) \ 343 ((((ports) ^ ((ports) >> 16)) * 31) & (sctp_conn_hash_size - 1)) 344 345 /* 346 * Bind hash array size and hash function. The size must be a power 347 * of 2 and lport must be in host byte order. 348 */ 349 #define SCTP_BIND_FANOUT_SIZE 2048 350 #define SCTP_BIND_HASH(lport) (((lport) * 31) & (SCTP_BIND_FANOUT_SIZE - 1)) 351 352 /* options that SCTP negotiates during association establishment */ 353 #define SCTP_PRSCTP_OPTION 0x01 354 355 /* 356 * Listener hash array size and hash function. The size must be a power 357 * of 2 and lport must be in host byte order. 358 */ 359 #define SCTP_LISTEN_FANOUT_SIZE 512 360 #define SCTP_LISTEN_HASH(lport) (((lport) * 31) & (SCTP_LISTEN_FANOUT_SIZE - 1)) 361 362 typedef struct sctp_tf_s { 363 struct sctp_s *tf_sctp; 364 kmutex_t tf_lock; 365 } sctp_tf_t; 366 367 /* SCTP association hash list */ 368 extern sctp_tf_t *sctp_conn_fanout; 369 /* Size of sctp_conn_fanout */ 370 extern uint_t sctp_conn_hash_size; 371 372 /* SCTP bind hash list - all sctp_t with state >= BOUND. */ 373 extern sctp_tf_t sctp_bind_fanout[]; 374 375 /* SCTP listener hash list - all sctp_t with state == LISTEN. */ 376 extern sctp_tf_t sctp_listen_fanout[]; 377 378 /* Round up the value to the nearest mss. */ 379 #define MSS_ROUNDUP(value, mss) ((((value) - 1) / (mss) + 1) * (mss)) 380 381 extern sin_t sctp_sin_null; /* Zero address for quick clears */ 382 extern sin6_t sctp_sin6_null; /* Zero address for quick clears */ 383 384 #define SCTP_IS_DETACHED(sctp) ((sctp)->sctp_detached) 385 386 extern mib2_sctp_t sctp_mib; /* SNMP fixed size info */ 387 388 /* 389 * Object to represent database of options to search passed to 390 * {sock,tpi}optcom_req() interface routine to take care of option 391 * management and associated methods. 392 * XXX These and other externs should ideally move to a SCTP header 393 */ 394 extern optdb_obj_t sctp_opt_obj; 395 extern uint_t sctp_max_optbuf_len; 396 397 /* Data structure used to track received TSNs */ 398 typedef struct sctp_set_s { 399 struct sctp_set_s *next; 400 struct sctp_set_s *prev; 401 uint32_t begin; 402 uint32_t end; 403 } sctp_set_t; 404 405 /* Data structure used to track TSNs for PR-SCTP */ 406 typedef struct sctp_ftsn_set_s { 407 struct sctp_ftsn_set_s *next; 408 ftsn_entry_t ftsn_entries; 409 } sctp_ftsn_set_t; 410 411 /* Data structure used to track incoming SCTP streams */ 412 typedef struct sctp_instr_s { 413 mblk_t *istr_msgs; 414 int istr_nmsgs; 415 uint16_t nextseq; 416 struct sctp_s *sctp; 417 mblk_t *istr_reass; 418 } sctp_instr_t; 419 420 /* Reassembly data structure (per-stream) */ 421 typedef struct sctp_reass_s { 422 uint16_t ssn; 423 uint16_t needed; 424 uint16_t got; 425 mblk_t *tail; 426 boolean_t partial_delivered; 427 } sctp_reass_t; 428 429 /* debugging */ 430 #undef dprint 431 #if defined(DEBUG) && !defined(lint) 432 extern int sctpdebug; 433 434 #define dprint(level, args) { if (sctpdebug > (level)) printf args; } 435 436 #else /* define(DEBUG) && !defined(lint) */ 437 438 #define dprint(level, args) {} 439 440 #endif /* defined(DEBUG) && !defined(lint) */ 441 442 443 /* Peer address tracking */ 444 445 /* 446 * States for peer addresses 447 * 448 * SCTP_FADDRS_UNCONFIRMED: we have not communicated with this peer address 449 * before, mark it as unconfirmed so that we will not send data to it. 450 * All addresses initially are in unconfirmed state and required 451 * validation. SCTP sends a heartbeat to each of them and when it gets 452 * back a heartbeat ACK, the address will be marked as alive. This 453 * validation fixes a security issue with multihoming. If an attacker 454 * establishes an association with us and tells us that it has addresses 455 * belonging to another host A, this will prevent A from communicating 456 * with us. This is fixed by peer address validation. In the above case, 457 * A will respond with an abort. 458 * 459 * SCTP_FADDRS_ALIVE: this peer address is alive and we can communicate with 460 * it with no problem. 461 * 462 * SCTP_FADDRS_DOWN: we have exceeded the retransmission limit to this 463 * peer address. Once an address is marked down, we will only send 464 * a heartbeat to it every hb_interval in case it becomes alive now. 465 * 466 * SCTP_FADDRS_UNREACH: there is no suitable source address to send to 467 * this peer address. For example, the peer address is v6 but we only 468 * have v4 addresses. It is marked unreachable until there is an 469 * address configuration change. At that time, mark these addresses 470 * as unconfirmed and try again to see if those unreachable addresses 471 * are OK as we may have more source addresses. 472 */ 473 typedef enum { 474 SCTP_FADDRS_UNREACH, 475 SCTP_FADDRS_DOWN, 476 SCTP_FADDRS_ALIVE, 477 SCTP_FADDRS_UNCONFIRMED 478 } faddr_state_t; 479 480 typedef struct sctp_faddr_s { 481 struct sctp_faddr_s *next; 482 faddr_state_t state; 483 484 in6_addr_t faddr; 485 in6_addr_t saddr; 486 487 int64_t hb_expiry; /* time to retransmit heartbeat */ 488 uint32_t hb_interval; /* the heartbeat interval */ 489 490 int rto; /* RTO in tick */ 491 int srtt; /* Smoothed RTT in tick */ 492 int rttvar; /* RTT variance in tick */ 493 uint32_t rtt_updates; 494 int strikes; 495 int max_retr; 496 uint32_t sfa_pmss; 497 uint32_t cwnd; 498 uint32_t ssthresh; 499 uint32_t suna; /* sent - unack'ed */ 500 uint32_t pba; /* partial bytes acked */ 501 uint32_t acked; 502 int64_t lastactive; 503 mblk_t *timer_mp; /* retransmission timer control */ 504 uint32_t 505 hb_pending : 1, 506 timer_running : 1, 507 df : 1, 508 pmtu_discovered : 1, 509 510 rc_timer_running : 1, 511 isv4 : 1; 512 513 mblk_t *rc_timer_mp; /* reliable control chunk timer */ 514 ire_t *ire; /* cached IRE */ 515 uint32_t T3expire; /* # of times T3 timer expired */ 516 517 uint64_t hb_secret; /* per addr "secret" in heartbeat */ 518 } sctp_faddr_t; 519 520 /* Flags to indicate supported address type in the PARM_SUP_ADDRS. */ 521 #define PARM_SUPP_V6 0x1 522 #define PARM_SUPP_V4 0x2 523 524 /* 525 * Set heartbeat interval plus jitter. The jitter is supposed to be random, 526 * up to +/- 50% of the RTO. We use gethrtime() here for performance reason 527 * as the jitter does not really need to be "very" random. 528 */ 529 #define SET_HB_INTVL(fp) \ 530 ((fp)->hb_interval + (fp)->rto + ((fp)->rto >> 1) - \ 531 (uint_t)gethrtime() % (fp)->rto); 532 533 #define SCTP_IPIF_HASH 16 534 535 typedef struct sctp_ipif_hash_s { 536 list_t sctp_ipif_list; 537 int ipif_count; 538 } sctp_ipif_hash_t; 539 540 struct sctp_s; 541 542 /* 543 * Control structure for each open SCTP stream, 544 * defined only within the kernel or for a kmem user. 545 * NOTE: sctp_reinit_values MUST have a line for each field in this structure! 546 */ 547 #if (defined(_KERNEL) || defined(_KMEMUSER)) 548 549 typedef struct sctp_s { 550 551 /* 552 * The following is shared with (and duplicated) in IP, so if you 553 * make changes, make sure you also change things in ip_sctp.c. 554 */ 555 struct sctp_s *sctp_conn_hash_next; 556 struct sctp_s *sctp_conn_hash_prev; 557 558 struct sctp_s *sctp_listen_hash_next; 559 struct sctp_s *sctp_listen_hash_prev; 560 561 sctp_tf_t *sctp_listen_tfp; /* Ptr to tf */ 562 sctp_tf_t *sctp_conn_tfp; /* Ptr to tf */ 563 564 /* Global list of sctp */ 565 list_node_t sctp_list; 566 567 sctp_faddr_t *sctp_faddrs; 568 int sctp_nfaddrs; 569 sctp_ipif_hash_t sctp_saddrs[SCTP_IPIF_HASH]; 570 int sctp_nsaddrs; 571 572 /* 573 * These fields contain the same information as sctp_sctph->th_*port. 574 * However, the lookup functions can not use the header fields 575 * since during IP option manipulation the sctp_sctph pointer 576 * changes. 577 */ 578 union { 579 struct { 580 in_port_t sctpu_fport; /* Remote port */ 581 in_port_t sctpu_lport; /* Local port */ 582 } sctpu_ports1; 583 uint32_t sctpu_ports2; /* Rem port, */ 584 /* local port */ 585 /* Used for SCTP_MATCH performance */ 586 } sctp_sctpu; 587 #define sctp_fport sctp_sctpu.sctpu_ports1.sctpu_fport 588 #define sctp_lport sctp_sctpu.sctpu_ports1.sctpu_lport 589 #define sctp_ports sctp_sctpu.sctpu_ports2 590 591 kmutex_t sctp_lock; 592 kcondvar_t sctp_cv; 593 boolean_t sctp_running; 594 595 void *sctp_ulpd; /* SCTP upper layer desc. */ 596 597 struct sctp_upcalls_s sctp_upcalls; /* upcalls for sctp_ulpd */ 598 #define sctp_ulp_newconn sctp_upcalls.su_newconn 599 #define sctp_ulp_connected sctp_upcalls.su_connected 600 #define sctp_ulp_disconnected sctp_upcalls.su_disconnected 601 #define sctp_ulp_disconnecting sctp_upcalls.su_disconnecting 602 #define sctp_ulp_recv sctp_upcalls.su_recv 603 #define sctp_ulp_xmitted sctp_upcalls.su_xmitted 604 #define sctp_ulp_prop sctp_upcalls.su_properties 605 606 int32_t sctp_state; 607 608 conn_t *sctp_connp; /* conn_t stuff */ 609 #define sctp_zoneid sctp_connp->conn_zoneid 610 #define sctp_credp sctp_connp->conn_cred 611 612 /* Peer address tracking */ 613 sctp_faddr_t *sctp_lastfaddr; /* last faddr in list */ 614 sctp_faddr_t *sctp_primary; /* primary faddr */ 615 sctp_faddr_t *sctp_current; /* current faddr */ 616 sctp_faddr_t *sctp_lastdata; /* last data seen from this */ 617 618 /* Outbound data tracking */ 619 mblk_t *sctp_xmit_head; 620 mblk_t *sctp_xmit_tail; 621 mblk_t *sctp_xmit_unsent; 622 mblk_t *sctp_xmit_unsent_tail; 623 mblk_t *sctp_xmit_unacked; 624 625 int32_t sctp_unacked; /* # of unacked bytes */ 626 int32_t sctp_unsent; /* # of unsent bytes in hand */ 627 628 uint32_t sctp_ltsn; /* Local instance TSN */ 629 uint32_t sctp_lastack_rxd; /* Last rx'd cumtsn */ 630 uint32_t sctp_recovery_tsn; /* Exit from fast recovery */ 631 uint32_t sctp_adv_pap; /* Adv. Peer Ack Point */ 632 633 uint16_t sctp_num_ostr; 634 uint16_t *sctp_ostrcntrs; 635 636 /* sendmsg() default parameters */ 637 uint16_t sctp_def_stream; /* default stream id */ 638 uint16_t sctp_def_flags; /* default xmit flags */ 639 uint32_t sctp_def_ppid; /* default payload id */ 640 uint32_t sctp_def_context; /* default context */ 641 uint32_t sctp_def_timetolive; /* default msg TTL */ 642 643 /* Inbound data tracking */ 644 sctp_set_t *sctp_sack_info; /* Sack tracking */ 645 mblk_t *sctp_ack_mp; /* Delayed ACK timer block */ 646 sctp_instr_t *sctp_instr; /* Instream trackers */ 647 mblk_t *sctp_uo_frags; /* Un-ordered msg. fragments */ 648 uint32_t sctp_ftsn; /* Peer's TSN */ 649 uint32_t sctp_lastacked; /* last cumtsn SACKd */ 650 uint16_t sctp_num_istr; /* No. of instreams */ 651 int32_t sctp_istr_nmsgs; /* No. of chunks in instreams */ 652 int32_t sctp_sack_gaps; /* No. of received gaps */ 653 int32_t sctp_sack_toggle; /* SACK every other pkt */ 654 655 /* RTT calculation */ 656 uint32_t sctp_rtt_tsn; 657 int64_t sctp_out_time; 658 659 /* Stats */ 660 uint64_t sctp_opkts; /* sent pkts */ 661 uint64_t sctp_obchunks; /* sent control chunks */ 662 uint64_t sctp_odchunks; /* sent ordered data chunks */ 663 uint64_t sctp_oudchunks; /* sent unord data chunks */ 664 uint64_t sctp_rxtchunks; /* retransmitted chunks */ 665 uint64_t sctp_ipkts; /* recv pkts */ 666 uint64_t sctp_ibchunks; /* recv control chunks */ 667 uint64_t sctp_idchunks; /* recv ordered data chunks */ 668 uint64_t sctp_iudchunks; /* recv unord data chunks */ 669 uint64_t sctp_fragdmsgs; 670 uint64_t sctp_reassmsgs; 671 uint32_t sctp_T1expire; /* # of times T1timer expired */ 672 uint32_t sctp_T2expire; /* # of times T2timer expired */ 673 uint32_t sctp_T3expire; /* # of times T3timer expired */ 674 uint32_t sctp_assoc_start_time; /* time when assoc was est. */ 675 676 /* Outbound flow control */ 677 int32_t sctp_xmit_hiwater; /* Send high water mark */ 678 int32_t sctp_xmit_lowater; /* Send low water mark */ 679 uint32_t sctp_frwnd; /* Peer RWND */ 680 uint32_t sctp_cwnd_max; 681 682 /* Inbound flow control */ 683 int32_t sctp_rwnd; /* Current receive window */ 684 int32_t sctp_irwnd; /* Initial receive window */ 685 int32_t sctp_rxqueued; /* No. of bytes in RX q's */ 686 687 /* Pre-initialized composite headers */ 688 char *sctp_iphc; /* v4 sctp/ip hdr template buffer */ 689 char *sctp_iphc6; /* v6 sctp/ip hdr template buffer */ 690 691 int32_t sctp_iphc_len; /* actual allocated v4 buffer size */ 692 int32_t sctp_iphc6_len; /* actual allocated v6 buffer size */ 693 694 int32_t sctp_hdr_len; /* len of combined SCTP/IP v4 hdr */ 695 int32_t sctp_hdr6_len; /* len of combined SCTP/IP v6 hdr */ 696 697 ipha_t *sctp_ipha; /* IPv4 header in the buffer */ 698 ip6_t *sctp_ip6h; /* IPv6 header in the buffer */ 699 700 int32_t sctp_ip_hdr_len; /* Byte len of our current v4 hdr */ 701 int32_t sctp_ip_hdr6_len; /* Byte len of our current v6 hdr */ 702 703 sctp_hdr_t *sctp_sctph; /* sctp header in combined v4 hdr */ 704 sctp_hdr_t *sctp_sctph6; /* sctp header in combined v6 hdr */ 705 706 uint32_t sctp_lvtag; /* local SCTP instance verf tag */ 707 uint32_t sctp_fvtag; /* Peer's SCTP verf tag */ 708 709 /* Path MTU Discovery */ 710 int64_t sctp_last_mtu_probe; 711 clock_t sctp_mtu_probe_intvl; 712 uint32_t sctp_mss; /* Max send size (not TCP MSS!) */ 713 714 /* structs sctp_bits, sctp_events are for clearing all bits at once */ 715 struct { 716 uint32_t 717 718 sctp_understands_asconf : 1, /* Peer handles ASCONF chunks */ 719 sctp_debug : 1, /* SO_DEBUG "socket" option. */ 720 sctp_dontroute : 1, /* SO_DONTROUTE "socket" option. */ 721 sctp_broadcast : 1, /* SO_BROADCAST "socket" option. */ 722 723 sctp_useloopback : 1, /* SO_USELOOPBACK "socket" option. */ 724 sctp_cchunk_pend : 1, /* Control chunk in flight. */ 725 sctp_dgram_errind : 1, /* SO_DGRAM_ERRIND option */ 726 sctp_reuseaddr : 1, /* SO_REUSEADDR "socket" option. */ 727 728 sctp_linger : 1, /* SO_LINGER turned on */ 729 sctp_lingering : 1, /* Lingering in close */ 730 sctp_loopback: 1, /* src and dst are the same machine */ 731 sctp_force_sack : 1, 732 733 sctp_ack_timer_running: 1, /* Delayed ACK timer running */ 734 sctp_recvdstaddr : 1, /* return T_EXTCONN_IND with dstaddr */ 735 sctp_hwcksum : 1, /* The NIC is capable of hwcksum */ 736 sctp_understands_addip : 1, 737 738 sctp_bound_to_all : 1, 739 sctp_cansleep : 1, /* itf routines can sleep */ 740 sctp_detached : 1, /* If we're detached from a stream */ 741 sctp_send_adaption : 1, /* send adaption layer ind */ 742 743 sctp_recv_adaption : 1, /* received adaption layer ind */ 744 sctp_ndelay : 1, /* turn off Nagle */ 745 sctp_condemned : 1, /* this sctp is about to disappear */ 746 sctp_chk_fast_rexmit : 1, /* check for fast rexmit message */ 747 748 sctp_prsctp_aware : 1, /* is peer PR-SCTP aware? */ 749 sctp_linklocal : 1; /* is linklocal assoc. */ 750 } sctp_bits; 751 struct { 752 uint32_t 753 754 sctp_recvsndrcvinfo : 1, 755 sctp_recvassocevnt : 1, 756 sctp_recvpathevnt : 1, 757 sctp_recvsendfailevnt : 1, 758 759 sctp_recvpeererr : 1, 760 sctp_recvshutdownevnt : 1, 761 sctp_recvpdevnt : 1, 762 sctp_recvalevnt : 1; 763 } sctp_events; 764 #define sctp_priv_stream sctp_bits.sctp_priv_stream 765 #define sctp_understands_asconf sctp_bits.sctp_understands_asconf 766 #define sctp_debug sctp_bits.sctp_debug 767 #define sctp_dontroute sctp_bits.sctp_dontroute 768 #define sctp_broadcast sctp_bits.sctp_broadcast 769 #define sctp_useloopback sctp_bits.sctp_useloopback 770 #define sctp_cchunk_pend sctp_bits.sctp_cchunk_pend 771 #define sctp_dgram_errind sctp_bits.sctp_dgram_errind 772 #define sctp_reuseaddr sctp_bits.sctp_reuseaddr 773 #define sctp_linger sctp_bits.sctp_linger 774 #define sctp_lingering sctp_bits.sctp_lingering 775 #define sctp_loopback sctp_bits.sctp_loopback 776 #define sctp_force_sack sctp_bits.sctp_force_sack 777 #define sctp_ack_timer_running sctp_bits.sctp_ack_timer_running 778 #define sctp_recvdstaddr sctp_bits.sctp_recvdstaddr 779 #define sctp_hwcksum sctp_bits.sctp_hwcksum 780 #define sctp_understands_addip sctp_bits.sctp_understands_addip 781 #define sctp_bound_to_all sctp_bits.sctp_bound_to_all 782 #define sctp_cansleep sctp_bits.sctp_cansleep 783 #define sctp_detached sctp_bits.sctp_detached 784 #define sctp_send_adaption sctp_bits.sctp_send_adaption 785 #define sctp_recv_adaption sctp_bits.sctp_recv_adaption 786 #define sctp_ndelay sctp_bits.sctp_ndelay 787 #define sctp_condemned sctp_bits.sctp_condemned 788 #define sctp_chk_fast_rexmit sctp_bits.sctp_chk_fast_rexmit 789 #define sctp_prsctp_aware sctp_bits.sctp_prsctp_aware 790 #define sctp_linklocal sctp_bits.sctp_linklocal 791 792 #define sctp_recvsndrcvinfo sctp_events.sctp_recvsndrcvinfo 793 #define sctp_recvassocevnt sctp_events.sctp_recvassocevnt 794 #define sctp_recvpathevnt sctp_events.sctp_recvpathevnt 795 #define sctp_recvsendfailevnt sctp_events.sctp_recvsendfailevnt 796 #define sctp_recvpeererr sctp_events.sctp_recvpeererr 797 #define sctp_recvshutdownevnt sctp_events.sctp_recvshutdownevnt 798 #define sctp_recvpdevnt sctp_events.sctp_recvpdevnt 799 #define sctp_recvalevnt sctp_events.sctp_recvalevnt 800 801 /* Retransmit info */ 802 mblk_t *sctp_cookie_mp; /* cookie chunk, if rxt needed */ 803 int32_t sctp_strikes; /* Total number of assoc strikes */ 804 int32_t sctp_max_init_rxt; 805 int32_t sctp_pa_max_rxt; /* Max per-assoc retransmit cnt */ 806 int32_t sctp_pp_max_rxt; /* Max per-path retransmit cnt */ 807 uint32_t sctp_rto_max; 808 uint32_t sctp_init_rto_max; 809 uint32_t sctp_rto_min; 810 uint32_t sctp_rto_initial; 811 812 int64_t sctp_last_secret_update; 813 uint8_t sctp_secret[SCTP_SECRET_LEN]; /* for cookie auth */ 814 uint8_t sctp_old_secret[SCTP_SECRET_LEN]; 815 uint32_t sctp_cookie_lifetime; /* cookie lifetime in ms */ 816 817 /* 818 * Address family that app wishes returned addrsses to be in. 819 * Currently taken from address family used in T_BIND_REQ, but 820 * should really come from family used in original socket() call. 821 * Value can be AF_INET or AF_INET6. 822 */ 823 uint_t sctp_family; 824 ushort_t sctp_ipversion; 825 826 /* Bind hash tables */ 827 kmutex_t *sctp_bind_lockp; /* Ptr to tf_lock */ 828 struct sctp_s *sctp_bind_hash; 829 struct sctp_s **sctp_ptpbhn; 830 831 /* Shutdown / cleanup */ 832 sctp_faddr_t *sctp_shutdown_faddr; /* rotate faddr during shutd */ 833 int32_t sctp_client_errno; /* How the client screwed up */ 834 int sctp_lingertime; /* Close linger time (in seconds) */ 835 kmutex_t sctp_reflock; /* Protects sctp_refcnt & timer mp */ 836 ushort_t sctp_refcnt; /* No. of pending upstream msg */ 837 mblk_t *sctp_timer_mp; /* List of fired timers. */ 838 839 /* Misc */ 840 uint_t sctp_bound_if; /* IPV6_BOUND_IF */ 841 842 mblk_t *sctp_heartbeat_mp; /* Timer block for heartbeats */ 843 uint32_t sctp_hb_interval; /* Default hb_interval */ 844 845 int32_t sctp_autoclose; /* Auto disconnect in ticks */ 846 int64_t sctp_active; /* Last time data/sack on this conn */ 847 uint32_t sctp_tx_adaption_code; /* TX adaptation code */ 848 uint32_t sctp_rx_adaption_code; /* RX adaptation code */ 849 850 /* Reliable control chunks */ 851 mblk_t *sctp_cxmit_list; /* Xmit list for control chunks */ 852 uint32_t sctp_lcsn; /* Our serial number */ 853 uint32_t sctp_fcsn; /* Peer serial number */ 854 855 /* Per association receive queue */ 856 kmutex_t sctp_recvq_lock; 857 mblk_t *sctp_recvq; 858 mblk_t *sctp_recvq_tail; 859 taskq_t *sctp_recvq_tq; 860 861 /* Send queue to IP */ 862 kmutex_t sctp_sendq_lock; 863 mblk_t *sctp_sendq; 864 mblk_t *sctp_sendq_tail; 865 boolean_t sctp_sendq_sending; 866 867 /* IPv6 ancillary data */ 868 uint_t sctp_ipv6_recvancillary; /* flags */ 869 #define SCTP_IPV6_RECVPKTINFO 0x01 /* IPV6_RECVPKTINFO opt */ 870 #define SCTP_IPV6_RECVHOPLIMIT 0x02 /* IPV6_RECVHOPLIMIT opt */ 871 #define SCTP_IPV6_RECVHOPOPTS 0x04 /* IPV6_RECVHOPOPTS opt */ 872 #define SCTP_IPV6_RECVDSTOPTS 0x08 /* IPV6_RECVDSTOPTS opt */ 873 #define SCTP_IPV6_RECVRTHDR 0x10 /* IPV6_RECVRTHDR opt */ 874 #define SCTP_IPV6_RECVRTDSTOPTS 0x20 /* IPV6_RECVRTHDRDSTOPTS opt */ 875 876 uint_t sctp_recvifindex; /* last rcvd IPV6_RCVPKTINFO */ 877 uint_t sctp_recvhops; /* " IPV6_RECVHOPLIMIT */ 878 ip6_hbh_t *sctp_hopopts; /* " IPV6_RECVHOPOPTS */ 879 ip6_dest_t *sctp_dstopts; /* " IPV6_RECVDSTOPTS */ 880 ip6_dest_t *sctp_rtdstopts; /* " IPV6_RECVRTHDRDSTOPTS */ 881 ip6_rthdr_t *sctp_rthdr; /* " IPV6_RECVRTHDR */ 882 uint_t sctp_hopoptslen; 883 uint_t sctp_dstoptslen; 884 uint_t sctp_rtdstoptslen; 885 uint_t sctp_rthdrlen; 886 887 ip6_pkt_t sctp_sticky_ipp; /* Sticky options */ 888 #define sctp_ipp_fields sctp_sticky_ipp.ipp_fields 889 #define sctp_ipp_ifindex sctp_sticky_ipp.ipp_ifindex 890 #define sctp_ipp_addr sctp_sticky_ipp.ipp_addr 891 #define sctp_ipp_hoplimit sctp_sticky_ipp.ipp_hoplimit 892 #define sctp_ipp_hopoptslen sctp_sticky_ipp.ipp_hopoptslen 893 #define sctp_ipp_rtdstoptslen sctp_sticky_ipp.ipp_rtdstoptslen 894 #define sctp_ipp_rthdrlen sctp_sticky_ipp.ipp_rthdrlen 895 #define sctp_ipp_dstoptslen sctp_sticky_ipp.ipp_dstoptslen 896 #define sctp_ipp_hopopts sctp_sticky_ipp.ipp_hopopts 897 #define sctp_ipp_rtdstopts sctp_sticky_ipp.ipp_rtdstopts 898 #define sctp_ipp_rthdr sctp_sticky_ipp.ipp_rthdr 899 #define sctp_ipp_dstopts sctp_sticky_ipp.ipp_dstopts 900 #define sctp_ipp_nexthop sctp_sticky_ipp.ipp_nexthop 901 /* Stats */ 902 uint64_t sctp_msgcount; 903 uint64_t sctp_prsctpdrop; 904 } sctp_t; 905 906 extern list_t sctp_g_list; /* Head of SCTP instance data chain */ 907 extern kmutex_t sctp_g_lock; 908 909 #endif /* (defined(_KERNEL) || defined(_KMEMUSER)) */ 910 911 extern queue_t *sctp_g_q; /* Default queue used during detached closes */ 912 extern sctp_t *gsctp; 913 914 /* Padding mblk for SCTP chunks. */ 915 extern mblk_t *sctp_pad_mp; 916 917 extern void sctp_ack_timer(sctp_t *); 918 extern size_t sctp_adaption_code_param(sctp_t *, uchar_t *); 919 extern void sctp_adaption_event(sctp_t *); 920 extern int sctp_add_faddr(sctp_t *, in6_addr_t *, int); 921 extern int sctp_add_faddr_first(sctp_t *, in6_addr_t *, int); 922 extern boolean_t sctp_add_ftsn_set(sctp_ftsn_set_t **, sctp_faddr_t *, mblk_t *, 923 uint_t *, uint32_t *); 924 extern boolean_t sctp_add_recvq(sctp_t *, mblk_t *, boolean_t); 925 extern void sctp_add_sendq(sctp_t *, mblk_t *); 926 extern void sctp_add_unrec_parm(sctp_parm_hdr_t *, mblk_t **); 927 extern size_t sctp_addr_params(sctp_t *, int, uchar_t *); 928 extern size_t sctp_addr_params_len(sctp_t *, int, boolean_t); 929 extern mblk_t *sctp_add_proto_hdr(sctp_t *, sctp_faddr_t *, mblk_t *, int, 930 int *); 931 extern void sctp_addr_req(sctp_t *, mblk_t *); 932 extern sctp_t *sctp_addrlist2sctp(mblk_t *, sctp_hdr_t *, sctp_chunk_hdr_t *, 933 uint_t, zoneid_t); 934 extern void sctp_add_hdr(sctp_t *, uchar_t *, size_t); 935 extern void sctp_check_adv_ack_pt(sctp_t *, mblk_t *, mblk_t *); 936 extern boolean_t sctp_allocbuf(void **, uint_t *, boolean_t, void *, uint_t); 937 extern void sctp_assoc_event(sctp_t *, uint16_t, uint16_t, 938 sctp_chunk_hdr_t *); 939 940 extern void sctp_bind_hash_insert(sctp_tf_t *, sctp_t *, int); 941 extern void sctp_bind_hash_remove(sctp_t *); 942 extern in_port_t sctp_bindi(sctp_t *, in_port_t, int, int); 943 extern int sctp_bind_add(sctp_t *, const void *, uint32_t, boolean_t, 944 in_port_t); 945 extern int sctp_bind_del(sctp_t *, const void *, uint32_t, boolean_t); 946 extern int sctp_build_hdrs(sctp_t *); 947 948 extern int sctp_check_abandoned_msg(sctp_t *, mblk_t *); 949 extern void sctp_chunkify(sctp_t *, int, int); 950 extern void sctp_clean_death(sctp_t *, int); 951 extern void sctp_close_eager(sctp_t *); 952 extern boolean_t sctp_cmpbuf(void *, uint_t, boolean_t, void *, uint_t); 953 extern int sctp_compare_faddrsets(sctp_faddr_t *, sctp_faddr_t *); 954 extern void sctp_congest_reset(sctp_t *); 955 extern void sctp_conn_hash_insert(sctp_tf_t *, sctp_t *, int); 956 extern void sctp_conn_hash_remove(sctp_t *); 957 extern sctp_t *sctp_conn_match(in6_addr_t *, in6_addr_t *, uint32_t, uint_t, 958 zoneid_t); 959 extern sctp_t *sctp_conn_request(sctp_t *, mblk_t *, uint_t, uint_t, 960 sctp_init_chunk_t *, mblk_t *); 961 extern int sctp_conprim_opt_process(queue_t *, mblk_t *, int *, int *, 962 int *); 963 extern uint32_t sctp_cumack(sctp_t *, uint32_t, mblk_t **); 964 extern sctp_t *sctp_create_eager(sctp_t *); 965 966 extern void sctp_dispatch_rput(queue_t *, sctp_t *, sctp_hdr_t *, mblk_t *, 967 uint_t, uint_t, in6_addr_t); 968 extern char *sctp_display(sctp_t *, char *); 969 extern void sctp_display_all(); 970 971 extern void sctp_error_event(sctp_t *, sctp_chunk_hdr_t *); 972 973 extern void sctp_faddr_alive(sctp_t *, sctp_faddr_t *); 974 extern int sctp_faddr_dead(sctp_t *, sctp_faddr_t *, int); 975 extern void sctp_faddr_fini(); 976 extern void sctp_faddr_init(); 977 extern void sctp_faddr2hdraddr(sctp_faddr_t *, sctp_t *); 978 extern void sctp_faddr2ire(sctp_t *, sctp_faddr_t *); 979 extern void sctp_fast_rexmit(sctp_t *); 980 extern void sctp_fill_sack(sctp_t *, unsigned char *, int); 981 extern void sctp_free_faddr_timers(sctp_t *); 982 extern void sctp_free_ftsn_set(sctp_ftsn_set_t *); 983 extern void sctp_free_msg(mblk_t *); 984 extern void sctp_free_reass(sctp_instr_t *); 985 extern void sctp_free_set(sctp_set_t *); 986 extern void sctp_ftsn_sets_fini(void); 987 extern void sctp_ftsn_sets_init(void); 988 989 extern int sctp_get_addrlist(sctp_t *, const void *, uint32_t *, 990 uchar_t **, int *, size_t *); 991 extern int sctp_get_addrparams(sctp_t *, sctp_t *, mblk_t *, 992 sctp_chunk_hdr_t *, uint_t *); 993 extern void sctp_get_faddr_list(sctp_t *, uchar_t *, size_t); 994 extern mblk_t *sctp_get_first_sent(sctp_t *); 995 extern mblk_t *sctp_get_msg_to_send(sctp_t *, mblk_t **, mblk_t *, int *, 996 int32_t, uint32_t, sctp_faddr_t *); 997 extern in_port_t sctp_get_next_priv_port(); 998 extern void sctp_get_saddr_list(sctp_t *, uchar_t *, size_t); 999 1000 extern int sctp_handle_error(sctp_t *, sctp_hdr_t *, sctp_chunk_hdr_t *, 1001 mblk_t *); 1002 extern void sctp_hash_destroy(void); 1003 extern void sctp_hash_init(void); 1004 extern int sctp_header_init_ipv4(sctp_t *, int); 1005 extern int sctp_header_init_ipv6(sctp_t *, int); 1006 extern void sctp_heartbeat_timer(sctp_t *); 1007 1008 extern void sctp_icmp_error(sctp_t *, mblk_t *); 1009 extern void sctp_inc_taskq(void); 1010 extern void sctp_info_req(sctp_t *, mblk_t *); 1011 extern mblk_t *sctp_init_mp(sctp_t *); 1012 extern boolean_t sctp_initialize_params(sctp_t *, sctp_init_chunk_t *, 1013 sctp_init_chunk_t *); 1014 extern uint32_t sctp_init2vtag(sctp_chunk_hdr_t *); 1015 extern void sctp_intf_event(sctp_t *, in6_addr_t, int, int); 1016 extern void sctp_input_data(sctp_t *, mblk_t *, mblk_t *); 1017 extern void sctp_instream_cleanup(sctp_t *, boolean_t); 1018 extern void sctp_ire2faddr(sctp_t *, sctp_faddr_t *); 1019 extern int sctp_is_a_faddr_clean(sctp_t *); 1020 1021 extern void sctp_kstat_init(void); 1022 extern void sctp_kstat_fini(void); 1023 1024 extern ssize_t sctp_link_abort(mblk_t *, uint16_t, char *, size_t, int, 1025 boolean_t); 1026 extern void sctp_listen_hash_insert(sctp_tf_t *, sctp_t *); 1027 extern void sctp_listen_hash_remove(sctp_t *); 1028 extern sctp_t *sctp_lookup(sctp_t *, in6_addr_t *, sctp_tf_t *, uint32_t *, 1029 int); 1030 extern sctp_faddr_t *sctp_lookup_faddr(sctp_t *, in6_addr_t *); 1031 1032 extern mblk_t *sctp_make_err(sctp_t *, uint16_t, void *, size_t); 1033 extern mblk_t *sctp_make_ftsn_chunk(sctp_t *, sctp_faddr_t *, 1034 sctp_ftsn_set_t *, uint_t, uint32_t); 1035 extern void sctp_make_ftsns(sctp_t *, mblk_t *, mblk_t *, mblk_t **, 1036 sctp_faddr_t *, uint32_t *); 1037 extern mblk_t *sctp_make_mp(sctp_t *, sctp_faddr_t *, int); 1038 extern mblk_t *sctp_make_sack(sctp_t *, sctp_faddr_t *, mblk_t *); 1039 extern void sctp_maxpsz_set(sctp_t *); 1040 extern void sctp_move_faddr_timers(queue_t *, sctp_t *); 1041 1042 extern void sctp_nd_free(); 1043 extern int sctp_nd_getset(queue_t *, MBLKP); 1044 extern boolean_t sctp_nd_init(); 1045 extern sctp_parm_hdr_t *sctp_next_parm(sctp_parm_hdr_t *, ssize_t *); 1046 1047 extern void sctp_ootb_shutdown_ack(sctp_t *, mblk_t *, uint_t); 1048 extern size_t sctp_options_param(const sctp_t *, void *, int); 1049 extern size_t sctp_options_param_len(const sctp_t *, int); 1050 extern void sctp_output(sctp_t *sctp); 1051 1052 extern boolean_t sctp_param_register(sctpparam_t *, int); 1053 extern void sctp_partial_delivery_event(sctp_t *); 1054 extern int sctp_process_cookie(sctp_t *, sctp_chunk_hdr_t *, mblk_t *, 1055 sctp_init_chunk_t **, sctp_hdr_t *, int *, in6_addr_t *); 1056 extern void sctp_process_heartbeat(sctp_t *, sctp_chunk_hdr_t *); 1057 extern void sctp_process_sendq(sctp_t *); 1058 extern void sctp_process_timer(sctp_t *); 1059 1060 extern void sctp_redo_faddr_srcs(sctp_t *); 1061 extern void sctp_regift_xmitlist(sctp_t *); 1062 extern void sctp_return_heartbeat(sctp_t *, sctp_chunk_hdr_t *, mblk_t *); 1063 extern void sctp_rexmit(sctp_t *, sctp_faddr_t *); 1064 extern void sctp_rexmit_timer(sctp_t *, sctp_faddr_t *); 1065 extern sctp_faddr_t *sctp_rotate_faddr(sctp_t *, sctp_faddr_t *); 1066 1067 extern void sctp_sack(sctp_t *, mblk_t *); 1068 extern void sctp_savebuf(void **, uint_t *, boolean_t, void *, uint_t); 1069 extern int sctp_secure_restart_check(mblk_t *, sctp_chunk_hdr_t *, 1070 uint32_t, int); 1071 extern void sctp_send_abort(sctp_t *, uint32_t, uint16_t, char *, size_t, 1072 mblk_t *, int, boolean_t); 1073 extern void sctp_send_cookie_ack(sctp_t *); 1074 extern void sctp_send_cookie_echo(sctp_t *, sctp_chunk_hdr_t *, mblk_t *); 1075 extern void sctp_send_err(sctp_t *, mblk_t *, sctp_faddr_t *); 1076 extern void sctp_send_initack(sctp_t *, sctp_chunk_hdr_t *, mblk_t *); 1077 extern void sctp_send_shutdown(sctp_t *, int); 1078 extern void sctp_send_heartbeat(sctp_t *, sctp_faddr_t *); 1079 extern void sctp_sendfail_event(sctp_t *, mblk_t *, int, boolean_t); 1080 extern void sctp_set_hdraddrs(sctp_t *); 1081 extern void sctp_sets_init(); 1082 extern void sctp_sets_fini(); 1083 extern void sctp_shutdown_event(sctp_t *); 1084 extern void sctp_stop_faddr_timers(sctp_t *); 1085 extern int sctp_shutdown_received(sctp_t *, sctp_chunk_hdr_t *, int, int); 1086 extern void sctp_shutdown_complete(sctp_t *); 1087 extern void sctp_set_if_mtu(sctp_t *); 1088 extern void sctp_set_iplen(sctp_t *, mblk_t *); 1089 extern void sctp_set_ulp_prop(sctp_t *); 1090 extern size_t sctp_supaddr_param_len(sctp_t *); 1091 extern size_t sctp_supaddr_param(sctp_t *, uchar_t *); 1092 1093 extern void sctp_timer(sctp_t *, mblk_t *, clock_t); 1094 extern mblk_t *sctp_timer_alloc(sctp_t *, pfv_t); 1095 extern void sctp_timer_call(sctp_t *sctp, mblk_t *); 1096 extern void sctp_timer_free(mblk_t *); 1097 extern void sctp_timer_stop(mblk_t *); 1098 extern void sctp_unlink_faddr(sctp_t *, sctp_faddr_t *); 1099 1100 extern in_port_t sctp_update_next_port(in_port_t); 1101 extern void sctp_update_rtt(sctp_t *, sctp_faddr_t *, clock_t); 1102 extern void sctp_user_abort(sctp_t *, mblk_t *, boolean_t); 1103 1104 extern void sctp_validate_peer(sctp_t *); 1105 1106 extern void sctp_wput_ioctl(queue_t *, mblk_t *); 1107 1108 extern int sctp_xmit_list_clean(sctp_t *, ssize_t); 1109 1110 extern void sctp_zap_addrs(sctp_t *); 1111 extern void sctp_zap_faddrs(sctp_t *, int); 1112 1113 /* Contract private interface between SCTP and Clustering - PSARC/2005/602 */ 1114 1115 extern void (*cl_sctp_listen)(sa_family_t, uchar_t *, uint_t, in_port_t); 1116 extern void (*cl_sctp_unlisten)(sa_family_t, uchar_t *, uint_t, in_port_t); 1117 extern void (*cl_sctp_connect)(sa_family_t, uchar_t *, uint_t, in_port_t, 1118 uchar_t *, uint_t, in_port_t, boolean_t, cl_sctp_handle_t); 1119 extern void (*cl_sctp_disconnect)(sa_family_t, cl_sctp_handle_t); 1120 extern void (*cl_sctp_assoc_change)(sa_family_t, uchar_t *, size_t, uint_t, 1121 uchar_t *, size_t, uint_t, int, cl_sctp_handle_t); 1122 extern void (*cl_sctp_check_addrs)(sa_family_t, in_port_t, uchar_t **, 1123 size_t, uint_t *, boolean_t); 1124 1125 /* Send a mp to IP. */ 1126 #define IP_PUT(mp, conn, isv4) \ 1127 { \ 1128 if ((isv4)) \ 1129 ip_output((conn), (mp), WR(sctp_g_q), IP_WPUT); \ 1130 else \ 1131 ip_output_v6((conn), (mp), WR(sctp_g_q), IP_WPUT); \ 1132 } 1133 1134 #define RUN_SCTP(sctp) \ 1135 { \ 1136 mutex_enter(&(sctp)->sctp_lock); \ 1137 while ((sctp)->sctp_running) \ 1138 cv_wait(&(sctp)->sctp_cv, &(sctp)->sctp_lock); \ 1139 (sctp)->sctp_running = B_TRUE; \ 1140 mutex_exit(&(sctp)->sctp_lock); \ 1141 } 1142 1143 /* Wake up recvq taskq */ 1144 #define WAKE_SCTP(sctp) \ 1145 { \ 1146 mutex_enter(&(sctp)->sctp_lock); \ 1147 if ((sctp)->sctp_timer_mp != NULL) \ 1148 sctp_process_timer(sctp); \ 1149 (sctp)->sctp_running = B_FALSE; \ 1150 cv_broadcast(&(sctp)->sctp_cv); \ 1151 mutex_exit(&(sctp)->sctp_lock); \ 1152 } 1153 1154 #ifdef __cplusplus 1155 } 1156 #endif 1157 1158 #endif /* _INET_SCTP_SCTP_IMPL_H */ 1159