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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved 24 */ 25 26 #ifndef _INET_SCTP_SCTP_IMPL_H 27 #define _INET_SCTP_SCTP_IMPL_H 28 29 #include <sys/inttypes.h> 30 #include <sys/taskq.h> 31 #include <sys/list.h> 32 #include <sys/strsun.h> 33 #include <sys/zone.h> 34 #include <netinet/ip6.h> 35 #include <inet/optcom.h> 36 #include <inet/tunables.h> 37 #include <netinet/sctp.h> 38 #include <inet/sctp_itf.h> 39 #include "sctp_stack.h" 40 41 #ifdef __cplusplus 42 extern "C" { 43 #endif 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 * Maximum number of duplicate TSNs we can report. This is currently 66 * static, and governs the size of the mblk used to hold the duplicate 67 * reports. The use of duplcate TSN reports is currently experimental, 68 * so for now a static limit should suffice. 69 */ 70 #define SCTP_DUP_MBLK_SZ 64 71 72 #define SCTP_IS_ADDR_UNSPEC(isv4, addr) \ 73 ((isv4) ? IN6_IS_ADDR_V4MAPPED_ANY(&(addr)) : \ 74 IN6_IS_ADDR_UNSPECIFIED(&(addr))) 75 76 /* 77 * SCTP properties/tunables 78 */ 79 #define sctps_max_init_retr sctps_propinfo_tbl[0].prop_cur_uval 80 #define sctps_max_init_retr_high sctps_propinfo_tbl[0].prop_max_uval 81 #define sctps_max_init_retr_low sctps_propinfo_tbl[0].prop_min_uval 82 #define sctps_pa_max_retr sctps_propinfo_tbl[1].prop_cur_uval 83 #define sctps_pa_max_retr_high sctps_propinfo_tbl[1].prop_max_uval 84 #define sctps_pa_max_retr_low sctps_propinfo_tbl[1].prop_min_uval 85 #define sctps_pp_max_retr sctps_propinfo_tbl[2].prop_cur_uval 86 #define sctps_pp_max_retr_high sctps_propinfo_tbl[2].prop_max_uval 87 #define sctps_pp_max_retr_low sctps_propinfo_tbl[2].prop_min_uval 88 #define sctps_cwnd_max_ sctps_propinfo_tbl[3].prop_cur_uval 89 #define sctps_smallest_nonpriv_port sctps_propinfo_tbl[4].prop_cur_uval 90 #define sctps_ipv4_ttl sctps_propinfo_tbl[5].prop_cur_uval 91 #define sctps_heartbeat_interval sctps_propinfo_tbl[6].prop_cur_uval 92 #define sctps_heartbeat_interval_high sctps_propinfo_tbl[6].prop_max_uval 93 #define sctps_heartbeat_interval_low sctps_propinfo_tbl[6].prop_min_uval 94 #define sctps_initial_mtu sctps_propinfo_tbl[7].prop_cur_uval 95 #define sctps_mtu_probe_interval sctps_propinfo_tbl[8].prop_cur_uval 96 #define sctps_new_secret_interval sctps_propinfo_tbl[9].prop_cur_uval 97 #define sctps_deferred_ack_interval sctps_propinfo_tbl[10].prop_cur_uval 98 #define sctps_snd_lowat_fraction sctps_propinfo_tbl[11].prop_cur_uval 99 #define sctps_ignore_path_mtu sctps_propinfo_tbl[12].prop_cur_bval 100 #define sctps_initial_ssthresh sctps_propinfo_tbl[13].prop_cur_uval 101 #define sctps_smallest_anon_port sctps_propinfo_tbl[14].prop_cur_uval 102 #define sctps_largest_anon_port sctps_propinfo_tbl[15].prop_cur_uval 103 #define sctps_xmit_hiwat sctps_propinfo_tbl[16].prop_cur_uval 104 #define sctps_xmit_lowat sctps_propinfo_tbl[17].prop_cur_uval 105 #define sctps_recv_hiwat sctps_propinfo_tbl[18].prop_cur_uval 106 #define sctps_max_buf sctps_propinfo_tbl[19].prop_cur_uval 107 #define sctps_rtt_updates sctps_propinfo_tbl[20].prop_cur_uval 108 #define sctps_ipv6_hoplimit sctps_propinfo_tbl[21].prop_cur_uval 109 #define sctps_rto_ming sctps_propinfo_tbl[22].prop_cur_uval 110 #define sctps_rto_ming_high sctps_propinfo_tbl[22].prop_max_uval 111 #define sctps_rto_ming_low sctps_propinfo_tbl[22].prop_min_uval 112 #define sctps_rto_maxg sctps_propinfo_tbl[23].prop_cur_uval 113 #define sctps_rto_maxg_high sctps_propinfo_tbl[23].prop_max_uval 114 #define sctps_rto_maxg_low sctps_propinfo_tbl[23].prop_min_uval 115 #define sctps_rto_initialg sctps_propinfo_tbl[24].prop_cur_uval 116 #define sctps_rto_initialg_high sctps_propinfo_tbl[24].prop_max_uval 117 #define sctps_rto_initialg_low sctps_propinfo_tbl[24].prop_min_uval 118 #define sctps_cookie_life sctps_propinfo_tbl[25].prop_cur_uval 119 #define sctps_cookie_life_high sctps_propinfo_tbl[25].prop_max_uval 120 #define sctps_cookie_life_low sctps_propinfo_tbl[25].prop_min_uval 121 #define sctps_max_in_streams sctps_propinfo_tbl[26].prop_cur_uval 122 #define sctps_max_in_streams_high sctps_propinfo_tbl[26].prop_max_uval 123 #define sctps_max_in_streams_low sctps_propinfo_tbl[26].prop_min_uval 124 #define sctps_initial_out_streams sctps_propinfo_tbl[27].prop_cur_uval 125 #define sctps_initial_out_streams_high sctps_propinfo_tbl[27].prop_max_uval 126 #define sctps_initial_out_streams_low sctps_propinfo_tbl[27].prop_min_uval 127 #define sctps_shutack_wait_bound sctps_propinfo_tbl[28].prop_cur_uval 128 #define sctps_maxburst sctps_propinfo_tbl[29].prop_cur_uval 129 #define sctps_addip_enabled sctps_propinfo_tbl[30].prop_cur_bval 130 #define sctps_recv_hiwat_minmss sctps_propinfo_tbl[31].prop_cur_uval 131 #define sctps_slow_start_initial sctps_propinfo_tbl[32].prop_cur_uval 132 #define sctps_slow_start_after_idle sctps_propinfo_tbl[33].prop_cur_uval 133 #define sctps_prsctp_enabled sctps_propinfo_tbl[34].prop_cur_bval 134 #define sctps_fast_rxt_thresh sctps_propinfo_tbl[35].prop_cur_uval 135 #define sctps_deferred_acks_max sctps_propinfo_tbl[36].prop_cur_uval 136 #define sctps_wroff_xtra sctps_propinfo_tbl[37].prop_cur_uval 137 138 /* 139 * Retransmission timer start and stop macro for a given faddr. 140 */ 141 #define SCTP_FADDR_TIMER_RESTART(sctp, fp, intvl) \ 142 { \ 143 dprint(3, ("faddr_timer_restart: fp=%p %x:%x:%x:%x %d\n", \ 144 (void *)(fp), SCTP_PRINTADDR((fp)->faddr), (int)(intvl))); \ 145 sctp_timer((sctp), (fp)->timer_mp, (intvl)); \ 146 (fp)->timer_running = 1; \ 147 } 148 149 #define SCTP_FADDR_TIMER_STOP(fp) \ 150 ASSERT((fp)->timer_mp != NULL); \ 151 if ((fp)->timer_running) { \ 152 sctp_timer_stop((fp)->timer_mp); \ 153 (fp)->timer_running = 0; \ 154 } 155 156 /* For per endpoint association statistics */ 157 #define SCTP_MAX_RTO(sctp, fp) { \ 158 /* \ 159 * Record the maximum observed RTO, \ 160 * sctp_maxrto is zeroed elsewhere \ 161 * at the end of each stats request. \ 162 */ \ 163 (sctp)->sctp_maxrto = \ 164 MAX((sctp)->sctp_maxrto, (fp)->rto); \ 165 DTRACE_PROBE2(sctp__maxrto, sctp_t *, \ 166 sctp, struct sctp_faddr_s, fp); \ 167 } 168 169 #define SCTP_CALC_RXT(sctp, fp) \ 170 { \ 171 if (((fp)->rto <<= 1) > (sctp)->sctp_rto_max) \ 172 (fp)->rto = (sctp)->sctp_rto_max; \ 173 SCTP_MAX_RTO(sctp, fp); \ 174 } 175 176 177 #define SCTP_MAX_COMBINED_HEADER_LENGTH (60 + 12) /* Maxed out ip + sctp */ 178 #define SCTP_MAX_IP_OPTIONS_LENGTH (60 - IP_SIMPLE_HDR_LENGTH) 179 #define SCTP_MAX_HDR_LENGTH 60 180 181 #define SCTP_SECRET_LEN 16 182 183 #define SCTP_REFHOLD(sctp) { \ 184 mutex_enter(&(sctp)->sctp_reflock); \ 185 (sctp)->sctp_refcnt++; \ 186 DTRACE_PROBE1(sctp_refhold, sctp_t, sctp); \ 187 ASSERT((sctp)->sctp_refcnt != 0); \ 188 mutex_exit(&(sctp)->sctp_reflock); \ 189 } 190 191 #define SCTP_REFRELE(sctp) { \ 192 mutex_enter(&(sctp)->sctp_reflock); \ 193 ASSERT((sctp)->sctp_refcnt != 0); \ 194 if (--(sctp)->sctp_refcnt == 0) { \ 195 DTRACE_PROBE1(sctp_refrele, sctp_t, sctp); \ 196 mutex_exit(&(sctp)->sctp_reflock); \ 197 CONN_DEC_REF((sctp)->sctp_connp); \ 198 } else { \ 199 DTRACE_PROBE1(sctp_refrele, sctp_t, sctp); \ 200 mutex_exit(&(sctp)->sctp_reflock); \ 201 } \ 202 } 203 204 #define SCTP_PRINTADDR(a) (a).s6_addr32[0], (a).s6_addr32[1],\ 205 (a).s6_addr32[2], (a).s6_addr32[3] 206 207 #define CONN2SCTP(conn) ((sctp_t *)(&((conn_t *)conn)[1])) 208 209 /* 210 * Outbound data, flags and macros for per-message, per-chunk info 211 */ 212 typedef struct { 213 int64_t smh_ttl; /* Time to Live */ 214 int64_t smh_tob; /* Time of Birth */ 215 uint32_t smh_context; 216 uint16_t smh_sid; 217 uint16_t smh_ssn; 218 uint32_t smh_ppid; 219 uint16_t smh_flags; 220 uint32_t smh_msglen; 221 } sctp_msg_hdr_t; 222 223 #define SCTP_CHUNK_FLAG_SENT 0x01 224 #define SCTP_CHUNK_FLAG_REXMIT 0x02 225 #define SCTP_CHUNK_FLAG_ACKED 0x04 226 #define SCTP_MSG_FLAG_CHUNKED 0x08 227 #define SCTP_MSG_FLAG_ABANDONED 0x10 228 #define SCTP_CHUNK_FLAG_ABANDONED 0x20 229 230 #define SCTP_CHUNK_CLEAR_FLAGS(mp) ((mp)->b_flag = 0) 231 /* 232 * If we are transmitting the chunk for the first time we assign the TSN and 233 * SSN here. The reason we assign the SSN here (as opposed to doing it in 234 * sctp_chunkify()) is that the chunk may expire, if PRSCTP is enabled, before 235 * we get a chance to send it out. If we assign the SSN in sctp_chunkify() 236 * and this happens, then we need to send a Forward TSN to the peer, which 237 * will be expecting this SSN, assuming ordered. If we assign it here we 238 * can just take out the chunk from the transmit list without having to 239 * send a Forward TSN chunk. While assigning the SSN we use (meta)->b_cont 240 * to determine if it needs a new SSN (i.e. the next SSN for the stream), 241 * since (meta)->b_cont signifies the first chunk of a message (if the message 242 * is unordered, then the SSN is 0). 243 * 244 */ 245 #define SCTP_CHUNK_SENT(sctp, mp, sdc, fp, chunkdata, meta) { \ 246 if (!SCTP_CHUNK_ISSENT(mp)) { \ 247 sctp_msg_hdr_t *mhdr = (sctp_msg_hdr_t *)(meta)->b_rptr; \ 248 ASSERT(!SCTP_CHUNK_ABANDONED(mp)); \ 249 (mp)->b_flag = SCTP_CHUNK_FLAG_SENT; \ 250 (sdc)->sdh_tsn = htonl((sctp)->sctp_ltsn++); \ 251 if ((mhdr)->smh_flags & MSG_UNORDERED) { \ 252 (sdc)->sdh_ssn = 0; \ 253 SCTP_DATA_SET_UBIT(sdc); \ 254 BUMP_LOCAL((sctp)->sctp_oudchunks); \ 255 } else { \ 256 BUMP_LOCAL((sctp)->sctp_odchunks); \ 257 if ((mp) == (meta)->b_cont) { \ 258 mhdr->smh_ssn = htons( \ 259 (sctp)->sctp_ostrcntrs[mhdr->smh_sid]++); \ 260 } \ 261 (sdc)->sdh_ssn = mhdr->smh_ssn; \ 262 } \ 263 (sctp)->sctp_unacked += (chunkdata); \ 264 (sctp)->sctp_unsent -= (chunkdata); \ 265 (sctp)->sctp_frwnd -= (chunkdata); \ 266 } else { \ 267 if (SCTP_CHUNK_ISACKED(mp)) { \ 268 (sctp)->sctp_unacked += (chunkdata); \ 269 } else { \ 270 ASSERT(SCTP_CHUNK_DEST(mp)->suna >= ((chunkdata) + \ 271 sizeof (*sdc))); \ 272 SCTP_CHUNK_DEST(mp)->suna -= ((chunkdata) + \ 273 sizeof (*sdc)); \ 274 } \ 275 (mp)->b_flag &= ~(SCTP_CHUNK_FLAG_REXMIT | \ 276 SCTP_CHUNK_FLAG_ACKED); \ 277 SCTP_CHUNK_SET_SACKCNT(mp, 0); \ 278 BUMP_LOCAL(sctp->sctp_rxtchunks); \ 279 BUMP_LOCAL((sctp)->sctp_T3expire); \ 280 BUMP_LOCAL((fp)->T3expire); \ 281 } \ 282 SCTP_SET_CHUNK_DEST(mp, fp); \ 283 (fp)->suna += ((chunkdata) + sizeof (*sdc)); \ 284 } 285 286 #define SCTP_CHUNK_ISSENT(mp) ((mp)->b_flag & SCTP_CHUNK_FLAG_SENT) 287 #define SCTP_CHUNK_CANSEND(mp) \ 288 (!(SCTP_CHUNK_ABANDONED(mp)) && \ 289 (((mp)->b_flag & (SCTP_CHUNK_FLAG_REXMIT|SCTP_CHUNK_FLAG_SENT)) != \ 290 SCTP_CHUNK_FLAG_SENT)) 291 292 #define SCTP_CHUNK_DEST(mp) ((sctp_faddr_t *)(mp)->b_queue) 293 #define SCTP_SET_CHUNK_DEST(mp, fp) ((mp)->b_queue = (queue_t *)fp) 294 295 #define SCTP_CHUNK_REXMIT(mp) ((mp)->b_flag |= SCTP_CHUNK_FLAG_REXMIT) 296 #define SCTP_CHUNK_CLEAR_REXMIT(mp) ((mp)->b_flag &= ~SCTP_CHUNK_FLAG_REXMIT) 297 #define SCTP_CHUNK_WANT_REXMIT(mp) ((mp)->b_flag & SCTP_CHUNK_FLAG_REXMIT) 298 299 #define SCTP_CHUNK_ACKED(mp) \ 300 ((mp)->b_flag = (SCTP_CHUNK_FLAG_SENT|SCTP_CHUNK_FLAG_ACKED)) 301 #define SCTP_CHUNK_ISACKED(mp) ((mp)->b_flag & SCTP_CHUNK_FLAG_ACKED) 302 #define SCTP_CHUNK_CLEAR_ACKED(mp) ((mp)->b_flag &= ~SCTP_CHUNK_FLAG_ACKED) 303 304 #define SCTP_CHUNK_SACKCNT(mp) ((intptr_t)((mp)->b_prev)) 305 #define SCTP_CHUNK_SET_SACKCNT(mp, val) ((mp)->b_prev = \ 306 (mblk_t *)(uintptr_t)(val)) 307 308 #define SCTP_MSG_SET_CHUNKED(mp) ((mp)->b_flag |= SCTP_MSG_FLAG_CHUNKED) 309 #define SCTP_MSG_CLEAR_CHUNKED(mp)((mp)->b_flag &= ~SCTP_MSG_FLAG_CHUNKED) 310 #define SCTP_IS_MSG_CHUNKED(mp) ((mp)->b_flag & SCTP_MSG_FLAG_CHUNKED) 311 312 /* For PR-SCTP */ 313 #define SCTP_ABANDON_CHUNK(mp) ((mp)->b_flag |= SCTP_CHUNK_FLAG_ABANDONED) 314 #define SCTP_CHUNK_ABANDONED(mp) \ 315 ((mp)->b_flag & SCTP_CHUNK_FLAG_ABANDONED) 316 317 #define SCTP_MSG_SET_ABANDONED(mp) \ 318 ((mp)->b_flag |= SCTP_MSG_FLAG_ABANDONED) 319 #define SCTP_MSG_CLEAR_ABANDONED(mp)((mp)->b_flag &= ~SCTP_MSG_FLAG_ABANDONED) 320 #define SCTP_IS_MSG_ABANDONED(mp) ((mp)->b_flag & SCTP_MSG_FLAG_ABANDONED) 321 322 /* 323 * Check if a message has expired. A message is expired if 324 * 1. It has a non-zero time to live value and has not been sent before 325 * that time expires. 326 * 2. It is sent using PRSCTP and it has not been SACK'ed before 327 * its lifetime expires. 328 */ 329 #define SCTP_MSG_TO_BE_ABANDONED(meta, mhdr, sctp) \ 330 (((!SCTP_CHUNK_ISSENT((meta)->b_cont) && (mhdr)->smh_ttl > 0) || \ 331 ((sctp)->sctp_prsctp_aware && ((mhdr)->smh_flags & MSG_PR_SCTP))) && \ 332 ((ddi_get_lbolt64() - (mhdr)->smh_tob) > (mhdr)->smh_ttl)) 333 334 /* SCTP association hash function. */ 335 #define SCTP_CONN_HASH(sctps, ports) \ 336 ((((ports) ^ ((ports) >> 16)) * 31) & \ 337 ((sctps)->sctps_conn_hash_size - 1)) 338 339 /* 340 * Bind hash array size and hash function. The size must be a power 341 * of 2 and lport must be in host byte order. 342 */ 343 #define SCTP_BIND_FANOUT_SIZE 2048 344 #define SCTP_BIND_HASH(lport) (((lport) * 31) & (SCTP_BIND_FANOUT_SIZE - 1)) 345 346 /* options that SCTP negotiates during association establishment */ 347 #define SCTP_PRSCTP_OPTION 0x01 348 349 /* 350 * Listener hash array size and hash function. The size must be a power 351 * of 2 and lport must be in host byte order. 352 */ 353 #define SCTP_LISTEN_FANOUT_SIZE 512 354 #define SCTP_LISTEN_HASH(lport) (((lport) * 31) & (SCTP_LISTEN_FANOUT_SIZE - 1)) 355 356 typedef struct sctp_tf_s { 357 struct sctp_s *tf_sctp; 358 kmutex_t tf_lock; 359 } sctp_tf_t; 360 361 /* Round up the value to the nearest mss. */ 362 #define MSS_ROUNDUP(value, mss) ((((value) - 1) / (mss) + 1) * (mss)) 363 364 extern sin_t sctp_sin_null; /* Zero address for quick clears */ 365 extern sin6_t sctp_sin6_null; /* Zero address for quick clears */ 366 367 #define SCTP_IS_DETACHED(sctp) ((sctp)->sctp_detached) 368 369 /* Data structure used to track received TSNs */ 370 typedef struct sctp_set_s { 371 struct sctp_set_s *next; 372 struct sctp_set_s *prev; 373 uint32_t begin; 374 uint32_t end; 375 } sctp_set_t; 376 377 /* Data structure used to track TSNs for PR-SCTP */ 378 typedef struct sctp_ftsn_set_s { 379 struct sctp_ftsn_set_s *next; 380 ftsn_entry_t ftsn_entries; 381 } sctp_ftsn_set_t; 382 383 /* Data structure used to track incoming SCTP streams */ 384 typedef struct sctp_instr_s { 385 mblk_t *istr_msgs; 386 int istr_nmsgs; 387 uint16_t nextseq; 388 struct sctp_s *sctp; 389 mblk_t *istr_reass; 390 } sctp_instr_t; 391 392 /* Reassembly data structure (per-stream) */ 393 typedef struct sctp_reass_s { 394 uint16_t ssn; 395 uint16_t needed; 396 uint16_t got; 397 uint16_t msglen; /* len of consecutive fragments */ 398 /* from the begining (B-bit) */ 399 mblk_t *tail; 400 boolean_t hasBchunk; /* If the fragment list begins with */ 401 /* a B-bit set chunk */ 402 uint32_t nexttsn; /* TSN of the next fragment we */ 403 /* are expecting */ 404 boolean_t partial_delivered; 405 } sctp_reass_t; 406 407 /* debugging */ 408 #undef dprint 409 #ifdef DEBUG 410 extern int sctpdebug; 411 #define dprint(level, args) { if (sctpdebug > (level)) printf args; } 412 #else 413 #define dprint(level, args) {} 414 #endif 415 416 417 /* Peer address tracking */ 418 419 /* 420 * States for peer addresses 421 * 422 * SCTP_FADDRS_UNCONFIRMED: we have not communicated with this peer address 423 * before, mark it as unconfirmed so that we will not send data to it. 424 * All addresses initially are in unconfirmed state and required 425 * validation. SCTP sends a heartbeat to each of them and when it gets 426 * back a heartbeat ACK, the address will be marked as alive. This 427 * validation fixes a security issue with multihoming. If an attacker 428 * establishes an association with us and tells us that it has addresses 429 * belonging to another host A, this will prevent A from communicating 430 * with us. This is fixed by peer address validation. In the above case, 431 * A will respond with an abort. 432 * 433 * SCTP_FADDRS_ALIVE: this peer address is alive and we can communicate with 434 * it with no problem. 435 * 436 * SCTP_FADDRS_DOWN: we have exceeded the retransmission limit to this 437 * peer address. Once an address is marked down, we will only send 438 * a heartbeat to it every hb_interval in case it becomes alive now. 439 * 440 * SCTP_FADDRS_UNREACH: there is no suitable source address to send to 441 * this peer address. For example, the peer address is v6 but we only 442 * have v4 addresses. It is marked unreachable until there is an 443 * address configuration change. At that time, mark these addresses 444 * as unconfirmed and try again to see if those unreachable addresses 445 * are OK as we may have more source addresses. 446 */ 447 typedef enum { 448 SCTP_FADDRS_UNREACH, 449 SCTP_FADDRS_DOWN, 450 SCTP_FADDRS_ALIVE, 451 SCTP_FADDRS_UNCONFIRMED 452 } faddr_state_t; 453 454 typedef struct sctp_faddr_s { 455 struct sctp_faddr_s *next; 456 faddr_state_t state; 457 458 in6_addr_t faddr; 459 in6_addr_t saddr; 460 461 int64_t hb_expiry; /* time to retransmit heartbeat */ 462 uint32_t hb_interval; /* the heartbeat interval */ 463 464 int rto; /* RTO in tick */ 465 int srtt; /* Smoothed RTT in tick */ 466 int rttvar; /* RTT variance in tick */ 467 uint32_t rtt_updates; 468 int strikes; 469 int max_retr; 470 uint32_t sfa_pmss; 471 uint32_t cwnd; 472 uint32_t ssthresh; 473 uint32_t suna; /* sent - unack'ed */ 474 uint32_t pba; /* partial bytes acked */ 475 uint32_t acked; 476 int64_t lastactive; 477 mblk_t *timer_mp; /* retransmission timer control */ 478 uint32_t 479 hb_pending : 1, 480 timer_running : 1, 481 df : 1, 482 pmtu_discovered : 1, 483 484 rc_timer_running : 1, 485 isv4 : 1, 486 hb_enabled : 1; 487 488 mblk_t *rc_timer_mp; /* reliable control chunk timer */ 489 ip_xmit_attr_t *ixa; /* Transmit attributes */ 490 uint32_t T3expire; /* # of times T3 timer expired */ 491 492 uint64_t hb_secret; /* per addr "secret" in heartbeat */ 493 uint32_t rxt_unacked; /* # unack'ed retransmitted bytes */ 494 } sctp_faddr_t; 495 496 /* Flags to indicate supported address type in the PARM_SUP_ADDRS. */ 497 #define PARM_SUPP_V6 0x1 498 #define PARM_SUPP_V4 0x2 499 500 /* 501 * Set heartbeat interval plus jitter. The jitter is supposed to be random, 502 * up to +/- 50% of the RTO. We use gethrtime() here for performance reason 503 * as the jitter does not really need to be "very" random. 504 */ 505 #define SET_HB_INTVL(fp) \ 506 ((fp)->hb_interval + (fp)->rto + ((fp)->rto >> 1) - \ 507 (uint_t)gethrtime() % (fp)->rto) 508 509 #define SCTP_IPIF_HASH 16 510 511 typedef struct sctp_ipif_hash_s { 512 list_t sctp_ipif_list; 513 int ipif_count; 514 krwlock_t ipif_hash_lock; 515 } sctp_ipif_hash_t; 516 517 518 /* 519 * Initialize cwnd according to RFC 3390. def_max_init_cwnd is 520 * either sctp_slow_start_initial or sctp_slow_start_after idle 521 * depending on the caller. 522 */ 523 #define SET_CWND(fp, mss, def_max_init_cwnd) \ 524 { \ 525 (fp)->cwnd = MIN(def_max_init_cwnd * (mss), \ 526 MIN(4 * (mss), MAX(2 * (mss), 4380 / (mss) * (mss)))); \ 527 } 528 529 530 struct sctp_s; 531 532 /* 533 * Control structure for each open SCTP stream, 534 * defined only within the kernel or for a kmem user. 535 * NOTE: sctp_reinit_values MUST have a line for each field in this structure! 536 */ 537 #if (defined(_KERNEL) || defined(_KMEMUSER)) 538 539 typedef struct sctp_s { 540 541 /* 542 * The following is shared with (and duplicated) in IP, so if you 543 * make changes, make sure you also change things in ip_sctp.c. 544 */ 545 struct sctp_s *sctp_conn_hash_next; 546 struct sctp_s *sctp_conn_hash_prev; 547 548 struct sctp_s *sctp_listen_hash_next; 549 struct sctp_s *sctp_listen_hash_prev; 550 551 sctp_tf_t *sctp_listen_tfp; /* Ptr to tf */ 552 sctp_tf_t *sctp_conn_tfp; /* Ptr to tf */ 553 554 /* Global list of sctp */ 555 list_node_t sctp_list; 556 557 sctp_faddr_t *sctp_faddrs; 558 int sctp_nfaddrs; 559 sctp_ipif_hash_t sctp_saddrs[SCTP_IPIF_HASH]; 560 int sctp_nsaddrs; 561 562 kmutex_t sctp_lock; 563 kcondvar_t sctp_cv; 564 boolean_t sctp_running; 565 566 #define sctp_ulpd sctp_connp->conn_upper_handle 567 #define sctp_upcalls sctp_connp->conn_upcalls 568 569 #define sctp_ulp_newconn sctp_upcalls->su_newconn 570 #define sctp_ulp_connected sctp_upcalls->su_connected 571 #define sctp_ulp_disconnected sctp_upcalls->su_disconnected 572 #define sctp_ulp_opctl sctp_upcalls->su_opctl 573 #define sctp_ulp_recv sctp_upcalls->su_recv 574 #define sctp_ulp_xmitted sctp_upcalls->su_txq_full 575 #define sctp_ulp_prop sctp_upcalls->su_set_proto_props 576 577 int32_t sctp_state; 578 579 conn_t *sctp_connp; /* conn_t stuff */ 580 sctp_stack_t *sctp_sctps; 581 582 /* Peer address tracking */ 583 sctp_faddr_t *sctp_lastfaddr; /* last faddr in list */ 584 sctp_faddr_t *sctp_primary; /* primary faddr */ 585 sctp_faddr_t *sctp_current; /* current faddr */ 586 sctp_faddr_t *sctp_lastdata; /* last data seen from this */ 587 588 /* Outbound data tracking */ 589 mblk_t *sctp_xmit_head; 590 mblk_t *sctp_xmit_tail; 591 mblk_t *sctp_xmit_unsent; 592 mblk_t *sctp_xmit_unsent_tail; 593 mblk_t *sctp_xmit_unacked; 594 595 int32_t sctp_unacked; /* # of unacked bytes */ 596 int32_t sctp_unsent; /* # of unsent bytes in hand */ 597 598 uint32_t sctp_ltsn; /* Local instance TSN */ 599 uint32_t sctp_lastack_rxd; /* Last rx'd cumtsn */ 600 uint32_t sctp_recovery_tsn; /* Exit from fast recovery */ 601 uint32_t sctp_adv_pap; /* Adv. Peer Ack Point */ 602 603 uint16_t sctp_num_ostr; 604 uint16_t *sctp_ostrcntrs; 605 606 mblk_t *sctp_pad_mp; /* pad unaligned data chunks */ 607 608 /* sendmsg() default parameters */ 609 uint16_t sctp_def_stream; /* default stream id */ 610 uint16_t sctp_def_flags; /* default xmit flags */ 611 uint32_t sctp_def_ppid; /* default payload id */ 612 uint32_t sctp_def_context; /* default context */ 613 uint32_t sctp_def_timetolive; /* default msg TTL */ 614 615 /* Inbound data tracking */ 616 sctp_set_t *sctp_sack_info; /* Sack tracking */ 617 mblk_t *sctp_ack_mp; /* Delayed ACK timer block */ 618 sctp_instr_t *sctp_instr; /* Instream trackers */ 619 mblk_t *sctp_uo_frags; /* Un-ordered msg. fragments */ 620 uint32_t sctp_ftsn; /* Peer's TSN */ 621 uint32_t sctp_lastacked; /* last cumtsn SACKd */ 622 uint16_t sctp_num_istr; /* No. of instreams */ 623 int32_t sctp_istr_nmsgs; /* No. of chunks in instreams */ 624 int32_t sctp_sack_gaps; /* No. of received gaps */ 625 int32_t sctp_sack_toggle; /* SACK every other pkt */ 626 627 /* RTT calculation */ 628 uint32_t sctp_rtt_tsn; 629 int64_t sctp_out_time; 630 631 /* Stats can be reset by snmp users kstat, netstat and snmp agents */ 632 uint64_t sctp_opkts; /* sent pkts */ 633 uint64_t sctp_obchunks; /* sent control chunks */ 634 uint64_t sctp_odchunks; /* sent ordered data chunks */ 635 uint64_t sctp_oudchunks; /* sent unord data chunks */ 636 uint64_t sctp_rxtchunks; /* retransmitted chunks */ 637 uint64_t sctp_ipkts; /* recv pkts */ 638 uint64_t sctp_ibchunks; /* recv control chunks */ 639 uint64_t sctp_idchunks; /* recv ordered data chunks */ 640 uint64_t sctp_iudchunks; /* recv unord data chunks */ 641 uint64_t sctp_fragdmsgs; 642 uint64_t sctp_reassmsgs; 643 uint32_t sctp_T1expire; /* # of times T1timer expired */ 644 uint32_t sctp_T2expire; /* # of times T2timer expired */ 645 uint32_t sctp_T3expire; /* # of times T3timer expired */ 646 uint32_t sctp_assoc_start_time; /* time when assoc was est. */ 647 648 uint32_t sctp_frwnd; /* Peer RWND */ 649 uint32_t sctp_cwnd_max; 650 651 /* Inbound flow control */ 652 int32_t sctp_rwnd; /* Current receive window */ 653 int32_t sctp_irwnd; /* Initial receive window */ 654 int32_t sctp_rxqueued; /* No. of bytes in RX q's */ 655 656 /* Pre-initialized composite headers */ 657 uchar_t *sctp_iphc; /* v4 sctp/ip hdr template buffer */ 658 uchar_t *sctp_iphc6; /* v6 sctp/ip hdr template buffer */ 659 660 int32_t sctp_iphc_len; /* actual allocated v4 buffer size */ 661 int32_t sctp_iphc6_len; /* actual allocated v6 buffer size */ 662 663 int32_t sctp_hdr_len; /* len of combined SCTP/IP v4 hdr */ 664 int32_t sctp_hdr6_len; /* len of combined SCTP/IP v6 hdr */ 665 666 ipha_t *sctp_ipha; /* IPv4 header in the buffer */ 667 ip6_t *sctp_ip6h; /* IPv6 header in the buffer */ 668 669 int32_t sctp_ip_hdr_len; /* Byte len of our current v4 hdr */ 670 int32_t sctp_ip_hdr6_len; /* Byte len of our current v6 hdr */ 671 672 sctp_hdr_t *sctp_sctph; /* sctp header in combined v4 hdr */ 673 sctp_hdr_t *sctp_sctph6; /* sctp header in combined v6 hdr */ 674 675 uint32_t sctp_lvtag; /* local SCTP instance verf tag */ 676 uint32_t sctp_fvtag; /* Peer's SCTP verf tag */ 677 678 /* Path MTU Discovery */ 679 int64_t sctp_last_mtu_probe; 680 clock_t sctp_mtu_probe_intvl; 681 uint32_t sctp_mss; /* Max send size (not TCP MSS!) */ 682 683 /* structs sctp_bits, sctp_events are for clearing all bits at once */ 684 struct { 685 uint32_t 686 687 sctp_understands_asconf : 1, /* Peer handles ASCONF chunks */ 688 sctp_cchunk_pend : 1, /* Control chunk in flight. */ 689 sctp_lingering : 1, /* Lingering in close */ 690 sctp_loopback: 1, /* src and dst are the same machine */ 691 692 sctp_force_sack : 1, 693 sctp_ack_timer_running: 1, /* Delayed ACK timer running */ 694 sctp_hwcksum : 1, /* The NIC is capable of hwcksum */ 695 sctp_understands_addip : 1, 696 697 sctp_bound_to_all : 1, 698 sctp_cansleep : 1, /* itf routines can sleep */ 699 sctp_detached : 1, /* If we're detached from a stream */ 700 sctp_send_adaptation : 1, /* send adaptation layer ind */ 701 702 sctp_recv_adaptation : 1, /* recv adaptation layer ind */ 703 sctp_ndelay : 1, /* turn off Nagle */ 704 sctp_condemned : 1, /* this sctp is about to disappear */ 705 sctp_chk_fast_rexmit : 1, /* check for fast rexmit message */ 706 707 sctp_prsctp_aware : 1, /* is peer PR-SCTP aware? */ 708 sctp_linklocal : 1, /* is linklocal assoc. */ 709 sctp_rexmitting : 1, /* SCTP is retransmitting */ 710 sctp_zero_win_probe : 1, /* doing zero win probe */ 711 712 sctp_txq_full : 1, /* the tx queue is full */ 713 sctp_ulp_discon_done : 1, /* ulp_disconnecting done */ 714 sctp_dummy : 6; 715 } sctp_bits; 716 struct { 717 uint32_t 718 719 sctp_recvsndrcvinfo : 1, 720 sctp_recvassocevnt : 1, 721 sctp_recvpathevnt : 1, 722 sctp_recvsendfailevnt : 1, 723 724 sctp_recvpeererr : 1, 725 sctp_recvshutdownevnt : 1, 726 sctp_recvpdevnt : 1, 727 sctp_recvalevnt : 1; 728 } sctp_events; 729 #define sctp_priv_stream sctp_bits.sctp_priv_stream 730 #define sctp_understands_asconf sctp_bits.sctp_understands_asconf 731 #define sctp_cchunk_pend sctp_bits.sctp_cchunk_pend 732 #define sctp_lingering sctp_bits.sctp_lingering 733 #define sctp_loopback sctp_bits.sctp_loopback 734 #define sctp_force_sack sctp_bits.sctp_force_sack 735 #define sctp_ack_timer_running sctp_bits.sctp_ack_timer_running 736 #define sctp_hwcksum sctp_bits.sctp_hwcksum 737 #define sctp_understands_addip sctp_bits.sctp_understands_addip 738 #define sctp_bound_to_all sctp_bits.sctp_bound_to_all 739 #define sctp_cansleep sctp_bits.sctp_cansleep 740 #define sctp_detached sctp_bits.sctp_detached 741 #define sctp_send_adaptation sctp_bits.sctp_send_adaptation 742 #define sctp_recv_adaptation sctp_bits.sctp_recv_adaptation 743 #define sctp_ndelay sctp_bits.sctp_ndelay 744 #define sctp_condemned sctp_bits.sctp_condemned 745 #define sctp_chk_fast_rexmit sctp_bits.sctp_chk_fast_rexmit 746 #define sctp_prsctp_aware sctp_bits.sctp_prsctp_aware 747 #define sctp_linklocal sctp_bits.sctp_linklocal 748 #define sctp_rexmitting sctp_bits.sctp_rexmitting 749 #define sctp_zero_win_probe sctp_bits.sctp_zero_win_probe 750 #define sctp_txq_full sctp_bits.sctp_txq_full 751 #define sctp_ulp_discon_done sctp_bits.sctp_ulp_discon_done 752 753 #define sctp_recvsndrcvinfo sctp_events.sctp_recvsndrcvinfo 754 #define sctp_recvassocevnt sctp_events.sctp_recvassocevnt 755 #define sctp_recvpathevnt sctp_events.sctp_recvpathevnt 756 #define sctp_recvsendfailevnt sctp_events.sctp_recvsendfailevnt 757 #define sctp_recvpeererr sctp_events.sctp_recvpeererr 758 #define sctp_recvshutdownevnt sctp_events.sctp_recvshutdownevnt 759 #define sctp_recvpdevnt sctp_events.sctp_recvpdevnt 760 #define sctp_recvalevnt sctp_events.sctp_recvalevnt 761 762 /* Retransmit info */ 763 mblk_t *sctp_cookie_mp; /* cookie chunk, if rxt needed */ 764 int32_t sctp_strikes; /* Total number of assoc strikes */ 765 int32_t sctp_max_init_rxt; 766 int32_t sctp_pa_max_rxt; /* Max per-assoc retransmit cnt */ 767 int32_t sctp_pp_max_rxt; /* Max per-path retransmit cnt */ 768 uint32_t sctp_rto_max; 769 uint32_t sctp_init_rto_max; 770 uint32_t sctp_rto_min; 771 uint32_t sctp_rto_initial; 772 773 int64_t sctp_last_secret_update; 774 uint8_t sctp_secret[SCTP_SECRET_LEN]; /* for cookie auth */ 775 uint8_t sctp_old_secret[SCTP_SECRET_LEN]; 776 uint32_t sctp_cookie_lifetime; /* cookie lifetime in tick */ 777 778 /* Bind hash tables */ 779 kmutex_t *sctp_bind_lockp; /* Ptr to tf_lock */ 780 struct sctp_s *sctp_bind_hash; 781 struct sctp_s **sctp_ptpbhn; 782 783 /* Shutdown / cleanup */ 784 sctp_faddr_t *sctp_shutdown_faddr; /* rotate faddr during shutd */ 785 int32_t sctp_client_errno; /* How the client screwed up */ 786 kmutex_t sctp_reflock; /* Protects sctp_refcnt & timer mp */ 787 ushort_t sctp_refcnt; /* No. of pending upstream msg */ 788 mblk_t *sctp_timer_mp; /* List of fired timers. */ 789 790 mblk_t *sctp_heartbeat_mp; /* Timer block for heartbeats */ 791 uint32_t sctp_hb_interval; /* Default hb_interval */ 792 793 int32_t sctp_autoclose; /* Auto disconnect in ticks */ 794 int64_t sctp_active; /* Last time data/sack on this conn */ 795 uint32_t sctp_tx_adaptation_code; /* TX adaptation code */ 796 uint32_t sctp_rx_adaptation_code; /* RX adaptation code */ 797 798 /* Reliable control chunks */ 799 mblk_t *sctp_cxmit_list; /* Xmit list for control chunks */ 800 uint32_t sctp_lcsn; /* Our serial number */ 801 uint32_t sctp_fcsn; /* Peer serial number */ 802 803 /* Per association receive queue */ 804 kmutex_t sctp_recvq_lock; 805 mblk_t *sctp_recvq; 806 mblk_t *sctp_recvq_tail; 807 taskq_t *sctp_recvq_tq; 808 809 /* IPv6 ancillary data */ 810 uint_t sctp_recvifindex; /* last rcvd IPV6_RCVPKTINFO */ 811 uint_t sctp_recvhops; /* " IPV6_RECVHOPLIMIT */ 812 uint_t sctp_recvtclass; /* " IPV6_RECVTCLASS */ 813 ip6_hbh_t *sctp_hopopts; /* " IPV6_RECVHOPOPTS */ 814 ip6_dest_t *sctp_dstopts; /* " IPV6_RECVDSTOPTS */ 815 ip6_dest_t *sctp_rthdrdstopts; /* " IPV6_RECVRTHDRDSTOPTS */ 816 ip6_rthdr_t *sctp_rthdr; /* " IPV6_RECVRTHDR */ 817 uint_t sctp_hopoptslen; 818 uint_t sctp_dstoptslen; 819 uint_t sctp_rthdrdstoptslen; 820 uint_t sctp_rthdrlen; 821 822 /* Stats */ 823 uint64_t sctp_msgcount; 824 uint64_t sctp_prsctpdrop; 825 826 uint_t sctp_v4label_len; /* length of cached v4 label */ 827 uint_t sctp_v6label_len; /* length of cached v6 label */ 828 uint32_t sctp_rxt_nxttsn; /* Next TSN to be rexmitted */ 829 uint32_t sctp_rxt_maxtsn; /* Max TSN sent at time out */ 830 831 int sctp_pd_point; /* Partial delivery point */ 832 mblk_t *sctp_err_chunks; /* Error chunks */ 833 uint32_t sctp_err_len; /* Total error chunks length */ 834 835 /* additional source data for per endpoint association statistics */ 836 uint64_t sctp_outseqtsns; /* TSN rx > expected TSN */ 837 uint64_t sctp_osacks; /* total sacks sent */ 838 uint64_t sctp_isacks; /* total sacks received */ 839 uint64_t sctp_idupchunks; /* rx dups, ord or unord */ 840 uint64_t sctp_gapcnt; /* total gap acks rx */ 841 /* 842 * Add the current data from the counters which are reset by snmp 843 * to these cumulative counters to use in per endpoint statistics. 844 */ 845 uint64_t sctp_cum_obchunks; /* sent control chunks */ 846 uint64_t sctp_cum_odchunks; /* sent ordered data chunks */ 847 uint64_t sctp_cum_oudchunks; /* sent unord data chunks */ 848 uint64_t sctp_cum_rxtchunks; /* retransmitted chunks */ 849 uint64_t sctp_cum_ibchunks; /* recv control chunks */ 850 uint64_t sctp_cum_idchunks; /* recv ordered data chunks */ 851 uint64_t sctp_cum_iudchunks; /* recv unord data chunks */ 852 853 /* 854 * When non-zero, this is the maximum observed RTO since assoc stats 855 * were last requested. When zero, no RTO update has occurred since 856 * the previous user request for stats on this endpoint. 857 */ 858 int sctp_maxrto; 859 /* 860 * The stored value of sctp_maxrto passed to user during the previous 861 * user request for stats on this endpoint. 862 */ 863 int sctp_prev_maxrto; 864 } sctp_t; 865 866 #define SCTP_TXQ_LEN(sctp) ((sctp)->sctp_unsent + (sctp)->sctp_unacked) 867 #define SCTP_TXQ_UPDATE(sctp) \ 868 if ((sctp)->sctp_txq_full && SCTP_TXQ_LEN(sctp) <= \ 869 (sctp)->sctp_connp->conn_sndlowat) { \ 870 (sctp)->sctp_txq_full = 0; \ 871 (sctp)->sctp_ulp_xmitted((sctp)->sctp_ulpd, \ 872 B_FALSE); \ 873 } 874 875 #endif /* (defined(_KERNEL) || defined(_KMEMUSER)) */ 876 877 extern void sctp_ack_timer(sctp_t *); 878 extern size_t sctp_adaptation_code_param(sctp_t *, uchar_t *); 879 extern void sctp_adaptation_event(sctp_t *); 880 extern void sctp_add_err(sctp_t *, uint16_t, void *, size_t, 881 sctp_faddr_t *); 882 extern int sctp_add_faddr(sctp_t *, in6_addr_t *, int, boolean_t); 883 extern boolean_t sctp_add_ftsn_set(sctp_ftsn_set_t **, sctp_faddr_t *, mblk_t *, 884 uint_t *, uint32_t *); 885 extern void sctp_add_recvq(sctp_t *, mblk_t *, boolean_t, 886 ip_recv_attr_t *); 887 extern void sctp_add_unrec_parm(sctp_parm_hdr_t *, mblk_t **, boolean_t); 888 extern size_t sctp_addr_params(sctp_t *, int, uchar_t *, boolean_t); 889 extern mblk_t *sctp_add_proto_hdr(sctp_t *, sctp_faddr_t *, mblk_t *, int, 890 int *); 891 extern void sctp_addr_req(sctp_t *, mblk_t *); 892 extern sctp_t *sctp_addrlist2sctp(mblk_t *, sctp_hdr_t *, sctp_chunk_hdr_t *, 893 zoneid_t, sctp_stack_t *); 894 extern void sctp_check_adv_ack_pt(sctp_t *, mblk_t *, mblk_t *); 895 extern void sctp_assoc_event(sctp_t *, uint16_t, uint16_t, 896 sctp_chunk_hdr_t *); 897 898 extern void sctp_bind_hash_insert(sctp_tf_t *, sctp_t *, int); 899 extern void sctp_bind_hash_remove(sctp_t *); 900 extern int sctp_bindi(sctp_t *, in_port_t, boolean_t, int, in_port_t *); 901 extern int sctp_bind_add(sctp_t *, const void *, uint32_t, boolean_t, 902 in_port_t); 903 extern int sctp_bind_del(sctp_t *, const void *, uint32_t, boolean_t); 904 extern int sctp_build_hdrs(sctp_t *, int); 905 906 extern int sctp_check_abandoned_msg(sctp_t *, mblk_t *); 907 extern void sctp_clean_death(sctp_t *, int); 908 extern void sctp_close_eager(sctp_t *); 909 extern int sctp_compare_faddrsets(sctp_faddr_t *, sctp_faddr_t *); 910 extern void sctp_congest_reset(sctp_t *); 911 extern void sctp_conn_hash_insert(sctp_tf_t *, sctp_t *, int); 912 extern void sctp_conn_hash_remove(sctp_t *); 913 extern void sctp_conn_init(conn_t *); 914 extern sctp_t *sctp_conn_match(in6_addr_t **, uint32_t, in6_addr_t *, 915 uint32_t, zoneid_t, iaflags_t, sctp_stack_t *); 916 extern sctp_t *sctp_conn_request(sctp_t *, mblk_t *, uint_t, uint_t, 917 sctp_init_chunk_t *, ip_recv_attr_t *); 918 extern uint32_t sctp_cumack(sctp_t *, uint32_t, mblk_t **); 919 extern sctp_t *sctp_create_eager(sctp_t *); 920 921 extern void sctp_dispatch_rput(queue_t *, sctp_t *, sctp_hdr_t *, mblk_t *, 922 uint_t, uint_t, in6_addr_t); 923 extern char *sctp_display(sctp_t *, char *); 924 extern void sctp_display_all(sctp_stack_t *); 925 926 extern void sctp_error_event(sctp_t *, sctp_chunk_hdr_t *, boolean_t); 927 928 extern void sctp_faddr_alive(sctp_t *, sctp_faddr_t *); 929 extern int sctp_faddr_dead(sctp_t *, sctp_faddr_t *, int); 930 extern void sctp_faddr_fini(void); 931 extern void sctp_faddr_init(void); 932 extern void sctp_fast_rexmit(sctp_t *); 933 extern void sctp_fill_sack(sctp_t *, unsigned char *, int); 934 extern void sctp_free_faddr_timers(sctp_t *); 935 extern void sctp_free_ftsn_set(sctp_ftsn_set_t *); 936 extern void sctp_free_msg(mblk_t *); 937 extern void sctp_free_reass(sctp_instr_t *); 938 extern void sctp_free_set(sctp_set_t *); 939 extern void sctp_ftsn_sets_fini(void); 940 extern void sctp_ftsn_sets_init(void); 941 942 extern int sctp_get_addrlist(sctp_t *, const void *, uint32_t *, 943 uchar_t **, int *, size_t *); 944 extern int sctp_get_addrparams(sctp_t *, sctp_t *, mblk_t *, 945 sctp_chunk_hdr_t *, uint_t *); 946 extern void sctp_get_dest(sctp_t *, sctp_faddr_t *); 947 extern void sctp_get_faddr_list(sctp_t *, uchar_t *, size_t); 948 extern mblk_t *sctp_get_first_sent(sctp_t *); 949 extern mblk_t *sctp_get_msg_to_send(sctp_t *, mblk_t **, mblk_t *, int *, 950 int32_t, uint32_t, sctp_faddr_t *); 951 extern void sctp_get_saddr_list(sctp_t *, uchar_t *, size_t); 952 953 extern int sctp_handle_error(sctp_t *, sctp_hdr_t *, sctp_chunk_hdr_t *, 954 mblk_t *, ip_recv_attr_t *); 955 extern void sctp_hash_destroy(sctp_stack_t *); 956 extern void sctp_hash_init(sctp_stack_t *); 957 extern void sctp_heartbeat_timer(sctp_t *); 958 959 extern void sctp_icmp_error(sctp_t *, mblk_t *); 960 extern void sctp_inc_taskq(sctp_stack_t *); 961 extern void sctp_info_req(sctp_t *, mblk_t *); 962 extern mblk_t *sctp_init_mp(sctp_t *, sctp_faddr_t *); 963 extern boolean_t sctp_initialize_params(sctp_t *, sctp_init_chunk_t *, 964 sctp_init_chunk_t *); 965 extern uint32_t sctp_init2vtag(sctp_chunk_hdr_t *); 966 extern void sctp_intf_event(sctp_t *, in6_addr_t, int, int); 967 extern void sctp_input_data(sctp_t *, mblk_t *, ip_recv_attr_t *); 968 extern void sctp_instream_cleanup(sctp_t *, boolean_t); 969 extern int sctp_is_a_faddr_clean(sctp_t *); 970 971 extern void *sctp_kstat_init(netstackid_t); 972 extern void sctp_kstat_fini(netstackid_t, kstat_t *); 973 extern void *sctp_kstat2_init(netstackid_t, sctp_kstat_t *); 974 extern void sctp_kstat2_fini(netstackid_t, kstat_t *); 975 976 extern ssize_t sctp_link_abort(mblk_t *, uint16_t, char *, size_t, int, 977 boolean_t); 978 extern void sctp_listen_hash_insert(sctp_tf_t *, sctp_t *); 979 extern void sctp_listen_hash_remove(sctp_t *); 980 extern sctp_t *sctp_lookup(sctp_t *, in6_addr_t *, sctp_tf_t *, uint32_t *, 981 int); 982 extern sctp_faddr_t *sctp_lookup_faddr(sctp_t *, in6_addr_t *); 983 984 extern mblk_t *sctp_make_err(sctp_t *, uint16_t, void *, size_t); 985 extern mblk_t *sctp_make_ftsn_chunk(sctp_t *, sctp_faddr_t *, 986 sctp_ftsn_set_t *, uint_t, uint32_t); 987 extern void sctp_make_ftsns(sctp_t *, mblk_t *, mblk_t *, mblk_t **, 988 sctp_faddr_t *, uint32_t *); 989 extern mblk_t *sctp_make_mp(sctp_t *, sctp_faddr_t *, int); 990 extern mblk_t *sctp_make_sack(sctp_t *, sctp_faddr_t *, mblk_t *); 991 extern void sctp_maxpsz_set(sctp_t *); 992 extern void sctp_move_faddr_timers(queue_t *, sctp_t *); 993 994 extern sctp_parm_hdr_t *sctp_next_parm(sctp_parm_hdr_t *, ssize_t *); 995 996 extern void sctp_ootb_shutdown_ack(mblk_t *, uint_t, ip_recv_attr_t *, 997 ip_stack_t *); 998 extern size_t sctp_options_param(const sctp_t *, void *, int); 999 extern size_t sctp_options_param_len(const sctp_t *, int); 1000 extern void sctp_output(sctp_t *, uint_t); 1001 1002 extern void sctp_partial_delivery_event(sctp_t *); 1003 extern int sctp_process_cookie(sctp_t *, sctp_chunk_hdr_t *, mblk_t *, 1004 sctp_init_chunk_t **, sctp_hdr_t *, int *, in6_addr_t *, 1005 ip_recv_attr_t *); 1006 extern void sctp_process_err(sctp_t *); 1007 extern void sctp_process_heartbeat(sctp_t *, sctp_chunk_hdr_t *); 1008 extern void sctp_process_timer(sctp_t *); 1009 1010 extern void sctp_redo_faddr_srcs(sctp_t *); 1011 extern void sctp_regift_xmitlist(sctp_t *); 1012 extern void sctp_return_heartbeat(sctp_t *, sctp_chunk_hdr_t *, mblk_t *); 1013 extern void sctp_rexmit(sctp_t *, sctp_faddr_t *); 1014 extern mblk_t *sctp_rexmit_packet(sctp_t *, mblk_t **, mblk_t **, 1015 sctp_faddr_t *, uint_t *); 1016 extern void sctp_rexmit_timer(sctp_t *, sctp_faddr_t *); 1017 extern sctp_faddr_t *sctp_rotate_faddr(sctp_t *, sctp_faddr_t *); 1018 1019 extern boolean_t sctp_sack(sctp_t *, mblk_t *); 1020 extern int sctp_secure_restart_check(mblk_t *, sctp_chunk_hdr_t *, 1021 uint32_t, int, sctp_stack_t *, ip_recv_attr_t *); 1022 extern void sctp_send_abort(sctp_t *, uint32_t, uint16_t, char *, size_t, 1023 mblk_t *, int, boolean_t, ip_recv_attr_t *); 1024 extern void sctp_ootb_send_abort(uint32_t, uint16_t, char *, size_t, 1025 const mblk_t *, int, boolean_t, ip_recv_attr_t *, 1026 ip_stack_t *); 1027 extern void sctp_send_cookie_ack(sctp_t *); 1028 extern void sctp_send_cookie_echo(sctp_t *, sctp_chunk_hdr_t *, mblk_t *, 1029 ip_recv_attr_t *); 1030 extern void sctp_send_initack(sctp_t *, sctp_hdr_t *, sctp_chunk_hdr_t *, 1031 mblk_t *, ip_recv_attr_t *); 1032 extern void sctp_send_shutdown(sctp_t *, int); 1033 extern void sctp_send_heartbeat(sctp_t *, sctp_faddr_t *); 1034 extern void sctp_sendfail_event(sctp_t *, mblk_t *, int, boolean_t); 1035 extern void sctp_set_faddr_current(sctp_t *, sctp_faddr_t *); 1036 extern int sctp_set_hdraddrs(sctp_t *); 1037 extern void sctp_set_saddr(sctp_t *, sctp_faddr_t *); 1038 extern void sctp_sets_init(void); 1039 extern void sctp_sets_fini(void); 1040 extern void sctp_shutdown_event(sctp_t *); 1041 extern void sctp_stop_faddr_timers(sctp_t *); 1042 extern int sctp_shutdown_received(sctp_t *, sctp_chunk_hdr_t *, boolean_t, 1043 boolean_t, sctp_faddr_t *); 1044 extern void sctp_shutdown_complete(sctp_t *); 1045 extern void sctp_set_if_mtu(sctp_t *); 1046 extern void sctp_set_iplen(sctp_t *, mblk_t *, ip_xmit_attr_t *); 1047 extern void sctp_set_ulp_prop(sctp_t *); 1048 extern void sctp_ss_rexmit(sctp_t *); 1049 extern size_t sctp_supaddr_param_len(sctp_t *); 1050 extern size_t sctp_supaddr_param(sctp_t *, uchar_t *); 1051 1052 extern void sctp_timer(sctp_t *, mblk_t *, clock_t); 1053 extern mblk_t *sctp_timer_alloc(sctp_t *, pfv_t, int); 1054 extern void sctp_timer_call(sctp_t *sctp, mblk_t *); 1055 extern void sctp_timer_free(mblk_t *); 1056 extern void sctp_timer_stop(mblk_t *); 1057 extern void sctp_unlink_faddr(sctp_t *, sctp_faddr_t *); 1058 1059 extern void sctp_update_dce(sctp_t *sctp); 1060 extern in_port_t sctp_update_next_port(in_port_t, zone_t *zone, sctp_stack_t *); 1061 extern void sctp_update_rtt(sctp_t *, sctp_faddr_t *, clock_t); 1062 extern void sctp_user_abort(sctp_t *, mblk_t *); 1063 1064 extern void sctp_validate_peer(sctp_t *); 1065 1066 extern int sctp_xmit_list_clean(sctp_t *, ssize_t); 1067 1068 extern void sctp_zap_addrs(sctp_t *); 1069 extern void sctp_zap_faddrs(sctp_t *, int); 1070 extern sctp_chunk_hdr_t *sctp_first_chunk(uchar_t *, ssize_t); 1071 1072 /* Contract private interface between SCTP and Clustering - PSARC/2005/602 */ 1073 1074 extern void (*cl_sctp_listen)(sa_family_t, uchar_t *, uint_t, in_port_t); 1075 extern void (*cl_sctp_unlisten)(sa_family_t, uchar_t *, uint_t, in_port_t); 1076 extern void (*cl_sctp_connect)(sa_family_t, uchar_t *, uint_t, in_port_t, 1077 uchar_t *, uint_t, in_port_t, boolean_t, cl_sctp_handle_t); 1078 extern void (*cl_sctp_disconnect)(sa_family_t, cl_sctp_handle_t); 1079 extern void (*cl_sctp_assoc_change)(sa_family_t, uchar_t *, size_t, uint_t, 1080 uchar_t *, size_t, uint_t, int, cl_sctp_handle_t); 1081 extern void (*cl_sctp_check_addrs)(sa_family_t, in_port_t, uchar_t **, 1082 size_t, uint_t *, boolean_t); 1083 1084 #define RUN_SCTP(sctp) \ 1085 { \ 1086 mutex_enter(&(sctp)->sctp_lock); \ 1087 while ((sctp)->sctp_running) \ 1088 cv_wait(&(sctp)->sctp_cv, &(sctp)->sctp_lock); \ 1089 (sctp)->sctp_running = B_TRUE; \ 1090 mutex_exit(&(sctp)->sctp_lock); \ 1091 } 1092 1093 /* Wake up recvq taskq */ 1094 #define WAKE_SCTP(sctp) \ 1095 { \ 1096 mutex_enter(&(sctp)->sctp_lock); \ 1097 if ((sctp)->sctp_timer_mp != NULL) \ 1098 sctp_process_timer(sctp); \ 1099 (sctp)->sctp_running = B_FALSE; \ 1100 cv_broadcast(&(sctp)->sctp_cv); \ 1101 mutex_exit(&(sctp)->sctp_lock); \ 1102 } 1103 1104 #ifdef __cplusplus 1105 } 1106 #endif 1107 1108 #endif /* _INET_SCTP_SCTP_IMPL_H */ 1109