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, max) \ 170 { \ 171 if (((fp)->rto <<= 1) > (max)) \ 172 (fp)->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 DTRACE_PROBE3(sctp__chunk__sent1, sctp_t *, sctp, \ 264 mblk_t *, mp, mblk_t *, meta); \ 265 (sctp)->sctp_unacked += (chunkdata); \ 266 (sctp)->sctp_unsent -= (chunkdata); \ 267 (sctp)->sctp_frwnd -= (chunkdata); \ 268 } else { \ 269 if (SCTP_CHUNK_ISACKED(mp)) { \ 270 (sctp)->sctp_unacked += (chunkdata); \ 271 } else { \ 272 ASSERT(SCTP_CHUNK_DEST(mp)->suna >= ((chunkdata) + \ 273 sizeof (*sdc))); \ 274 SCTP_CHUNK_DEST(mp)->suna -= ((chunkdata) + \ 275 sizeof (*sdc)); \ 276 } \ 277 DTRACE_PROBE3(sctp__chunk__sent2, sctp_t *, sctp, \ 278 mblk_t *, mp, mblk_t *, meta); \ 279 (mp)->b_flag &= ~(SCTP_CHUNK_FLAG_REXMIT | \ 280 SCTP_CHUNK_FLAG_ACKED); \ 281 SCTP_CHUNK_SET_SACKCNT(mp, 0); \ 282 BUMP_LOCAL(sctp->sctp_rxtchunks); \ 283 BUMP_LOCAL((sctp)->sctp_T3expire); \ 284 BUMP_LOCAL((fp)->T3expire); \ 285 } \ 286 SCTP_SET_CHUNK_DEST(mp, fp); \ 287 (fp)->suna += ((chunkdata) + sizeof (*sdc)); \ 288 } 289 290 #define SCTP_CHUNK_ISSENT(mp) ((mp)->b_flag & SCTP_CHUNK_FLAG_SENT) 291 #define SCTP_CHUNK_CANSEND(mp) \ 292 (!(SCTP_CHUNK_ABANDONED(mp)) && \ 293 (((mp)->b_flag & (SCTP_CHUNK_FLAG_REXMIT|SCTP_CHUNK_FLAG_SENT)) != \ 294 SCTP_CHUNK_FLAG_SENT)) 295 296 #define SCTP_CHUNK_DEST(mp) ((sctp_faddr_t *)(mp)->b_queue) 297 #define SCTP_SET_CHUNK_DEST(mp, fp) ((mp)->b_queue = (queue_t *)fp) 298 299 #define SCTP_CHUNK_REXMIT(sctp, mp) { \ 300 DTRACE_PROBE2(sctp__chunk__rexmit, sctp_t *, sctp, mblk_t *, \ 301 mp); \ 302 (mp)->b_flag |= SCTP_CHUNK_FLAG_REXMIT; \ 303 } 304 #define SCTP_CHUNK_CLEAR_REXMIT(mp) ((mp)->b_flag &= ~SCTP_CHUNK_FLAG_REXMIT) 305 #define SCTP_CHUNK_WANT_REXMIT(mp) ((mp)->b_flag & SCTP_CHUNK_FLAG_REXMIT) 306 307 #define SCTP_CHUNK_ACKED(mp) \ 308 ((mp)->b_flag = (SCTP_CHUNK_FLAG_SENT|SCTP_CHUNK_FLAG_ACKED)) 309 #define SCTP_CHUNK_ISACKED(mp) ((mp)->b_flag & SCTP_CHUNK_FLAG_ACKED) 310 #define SCTP_CHUNK_CLEAR_ACKED(sctp, mp) { \ 311 DTRACE_PROBE2(sctp__chunk__clracked, sctp_t *, sctp, mblk_t *, \ 312 mp); \ 313 (mp)->b_flag &= ~SCTP_CHUNK_FLAG_ACKED; \ 314 } 315 316 #define SCTP_CHUNK_SACKCNT(mp) ((intptr_t)((mp)->b_prev)) 317 #define SCTP_CHUNK_SET_SACKCNT(mp, val) ((mp)->b_prev = \ 318 (mblk_t *)(uintptr_t)(val)) 319 320 #define SCTP_MSG_SET_CHUNKED(mp) ((mp)->b_flag |= SCTP_MSG_FLAG_CHUNKED) 321 #define SCTP_MSG_CLEAR_CHUNKED(mp)((mp)->b_flag &= ~SCTP_MSG_FLAG_CHUNKED) 322 #define SCTP_IS_MSG_CHUNKED(mp) ((mp)->b_flag & SCTP_MSG_FLAG_CHUNKED) 323 324 /* For PR-SCTP */ 325 #define SCTP_ABANDON_CHUNK(mp) ((mp)->b_flag |= SCTP_CHUNK_FLAG_ABANDONED) 326 #define SCTP_CHUNK_ABANDONED(mp) \ 327 ((mp)->b_flag & SCTP_CHUNK_FLAG_ABANDONED) 328 329 #define SCTP_MSG_SET_ABANDONED(mp) \ 330 ((mp)->b_flag |= SCTP_MSG_FLAG_ABANDONED) 331 #define SCTP_MSG_CLEAR_ABANDONED(mp)((mp)->b_flag &= ~SCTP_MSG_FLAG_ABANDONED) 332 #define SCTP_IS_MSG_ABANDONED(mp) ((mp)->b_flag & SCTP_MSG_FLAG_ABANDONED) 333 334 /* 335 * Check if a message has expired. A message is expired if 336 * 1. It has a non-zero time to live value and has not been sent before 337 * that time expires. 338 * 2. It is sent using PRSCTP and it has not been SACK'ed before 339 * its lifetime expires. 340 */ 341 #define SCTP_MSG_TO_BE_ABANDONED(meta, mhdr, sctp) \ 342 (((!SCTP_CHUNK_ISSENT((meta)->b_cont) && (mhdr)->smh_ttl > 0) || \ 343 ((sctp)->sctp_prsctp_aware && ((mhdr)->smh_flags & MSG_PR_SCTP))) && \ 344 ((ddi_get_lbolt64() - (mhdr)->smh_tob) > (mhdr)->smh_ttl)) 345 346 /* SCTP association hash function. */ 347 #define SCTP_CONN_HASH(sctps, ports) \ 348 ((((ports) ^ ((ports) >> 16)) * 31) & \ 349 ((sctps)->sctps_conn_hash_size - 1)) 350 351 /* 352 * Bind hash array size and hash function. The size must be a power 353 * of 2 and lport must be in host byte order. 354 */ 355 #define SCTP_BIND_FANOUT_SIZE 2048 356 #define SCTP_BIND_HASH(lport) (((lport) * 31) & (SCTP_BIND_FANOUT_SIZE - 1)) 357 358 /* options that SCTP negotiates during association establishment */ 359 #define SCTP_PRSCTP_OPTION 0x01 360 361 /* 362 * Listener hash array size and hash function. The size must be a power 363 * of 2 and lport must be in host byte order. 364 */ 365 #define SCTP_LISTEN_FANOUT_SIZE 512 366 #define SCTP_LISTEN_HASH(lport) (((lport) * 31) & (SCTP_LISTEN_FANOUT_SIZE - 1)) 367 368 typedef struct sctp_tf_s { 369 struct sctp_s *tf_sctp; 370 kmutex_t tf_lock; 371 } sctp_tf_t; 372 373 /* Round up the value to the nearest mss. */ 374 #define MSS_ROUNDUP(value, mss) ((((value) - 1) / (mss) + 1) * (mss)) 375 376 extern sin_t sctp_sin_null; /* Zero address for quick clears */ 377 extern sin6_t sctp_sin6_null; /* Zero address for quick clears */ 378 379 #define SCTP_IS_DETACHED(sctp) ((sctp)->sctp_detached) 380 381 /* Data structure used to track received TSNs */ 382 typedef struct sctp_set_s { 383 struct sctp_set_s *next; 384 struct sctp_set_s *prev; 385 uint32_t begin; 386 uint32_t end; 387 } sctp_set_t; 388 389 /* Data structure used to track TSNs for PR-SCTP */ 390 typedef struct sctp_ftsn_set_s { 391 struct sctp_ftsn_set_s *next; 392 ftsn_entry_t ftsn_entries; 393 } sctp_ftsn_set_t; 394 395 /* Data structure used to track incoming SCTP streams */ 396 typedef struct sctp_instr_s { 397 mblk_t *istr_msgs; 398 int istr_nmsgs; 399 uint16_t nextseq; 400 struct sctp_s *sctp; 401 mblk_t *istr_reass; 402 } sctp_instr_t; 403 404 /* Reassembly data structure (per-stream) */ 405 typedef struct sctp_reass_s { 406 uint16_t ssn; 407 uint16_t needed; 408 uint16_t got; 409 uint16_t msglen; /* len of consecutive fragments */ 410 /* from the begining (B-bit) */ 411 mblk_t *tail; 412 boolean_t hasBchunk; /* If the fragment list begins with */ 413 /* a B-bit set chunk */ 414 uint32_t nexttsn; /* TSN of the next fragment we */ 415 /* are expecting */ 416 boolean_t partial_delivered; 417 } sctp_reass_t; 418 419 /* debugging */ 420 #undef dprint 421 #ifdef DEBUG 422 extern int sctpdebug; 423 #define dprint(level, args) { if (sctpdebug > (level)) printf args; } 424 #else 425 #define dprint(level, args) {} 426 #endif 427 428 429 /* Peer address tracking */ 430 431 /* 432 * States for peer addresses 433 * 434 * SCTP_FADDRS_UNCONFIRMED: we have not communicated with this peer address 435 * before, mark it as unconfirmed so that we will not send data to it. 436 * All addresses initially are in unconfirmed state and required 437 * validation. SCTP sends a heartbeat to each of them and when it gets 438 * back a heartbeat ACK, the address will be marked as alive. This 439 * validation fixes a security issue with multihoming. If an attacker 440 * establishes an association with us and tells us that it has addresses 441 * belonging to another host A, this will prevent A from communicating 442 * with us. This is fixed by peer address validation. In the above case, 443 * A will respond with an abort. 444 * 445 * SCTP_FADDRS_ALIVE: this peer address is alive and we can communicate with 446 * it with no problem. 447 * 448 * SCTP_FADDRS_DOWN: we have exceeded the retransmission limit to this 449 * peer address. Once an address is marked down, we will only send 450 * a heartbeat to it every hb_interval in case it becomes alive now. 451 * 452 * SCTP_FADDRS_UNREACH: there is no suitable source address to send to 453 * this peer address. For example, the peer address is v6 but we only 454 * have v4 addresses. It is marked unreachable until there is an 455 * address configuration change. At that time, mark these addresses 456 * as unconfirmed and try again to see if those unreachable addresses 457 * are OK as we may have more source addresses. 458 */ 459 typedef enum { 460 SCTP_FADDRS_UNREACH, 461 SCTP_FADDRS_DOWN, 462 SCTP_FADDRS_ALIVE, 463 SCTP_FADDRS_UNCONFIRMED 464 } faddr_state_t; 465 466 typedef struct sctp_faddr_s { 467 struct sctp_faddr_s *next; 468 faddr_state_t state; 469 470 in6_addr_t faddr; 471 in6_addr_t saddr; 472 473 int64_t hb_expiry; /* time to retransmit heartbeat */ 474 uint32_t hb_interval; /* the heartbeat interval */ 475 476 int rto; /* RTO in tick */ 477 int srtt; /* Smoothed RTT in tick */ 478 int rttvar; /* RTT variance in tick */ 479 uint32_t rtt_updates; 480 int strikes; 481 int max_retr; 482 uint32_t sfa_pmss; 483 uint32_t cwnd; 484 uint32_t ssthresh; 485 uint32_t suna; /* sent - unack'ed */ 486 uint32_t pba; /* partial bytes acked */ 487 uint32_t acked; 488 int64_t lastactive; 489 mblk_t *timer_mp; /* retransmission timer control */ 490 uint32_t 491 hb_pending : 1, 492 timer_running : 1, 493 df : 1, 494 pmtu_discovered : 1, 495 496 rc_timer_running : 1, 497 isv4 : 1, 498 hb_enabled : 1; 499 500 mblk_t *rc_timer_mp; /* reliable control chunk timer */ 501 ip_xmit_attr_t *ixa; /* Transmit attributes */ 502 uint32_t T3expire; /* # of times T3 timer expired */ 503 504 uint64_t hb_secret; /* per addr "secret" in heartbeat */ 505 uint32_t rxt_unacked; /* # unack'ed retransmitted bytes */ 506 } sctp_faddr_t; 507 508 /* Flags to indicate supported address type in the PARM_SUP_ADDRS. */ 509 #define PARM_SUPP_V6 0x1 510 #define PARM_SUPP_V4 0x2 511 512 /* 513 * Set heartbeat interval plus jitter. The jitter is supposed to be random, 514 * up to +/- 50% of the RTO. We use gethrtime() here for performance reason 515 * as the jitter does not really need to be "very" random. 516 */ 517 #define SET_HB_INTVL(fp) \ 518 ((fp)->hb_interval + (fp)->rto + ((fp)->rto >> 1) - \ 519 (uint_t)gethrtime() % (fp)->rto) 520 521 #define SCTP_IPIF_HASH 16 522 523 typedef struct sctp_ipif_hash_s { 524 list_t sctp_ipif_list; 525 int ipif_count; 526 krwlock_t ipif_hash_lock; 527 } sctp_ipif_hash_t; 528 529 530 /* 531 * Initialize cwnd according to RFC 3390. def_max_init_cwnd is 532 * either sctp_slow_start_initial or sctp_slow_start_after idle 533 * depending on the caller. 534 */ 535 #define SET_CWND(fp, mss, def_max_init_cwnd) \ 536 { \ 537 (fp)->cwnd = MIN(def_max_init_cwnd * (mss), \ 538 MIN(4 * (mss), MAX(2 * (mss), 4380 / (mss) * (mss)))); \ 539 } 540 541 542 struct sctp_s; 543 544 /* 545 * Control structure for each open SCTP stream, 546 * defined only within the kernel or for a kmem user. 547 * NOTE: sctp_reinit_values MUST have a line for each field in this structure! 548 */ 549 #if (defined(_KERNEL) || defined(_KMEMUSER)) 550 551 typedef struct sctp_s { 552 553 /* 554 * The following is shared with (and duplicated) in IP, so if you 555 * make changes, make sure you also change things in ip_sctp.c. 556 */ 557 struct sctp_s *sctp_conn_hash_next; 558 struct sctp_s *sctp_conn_hash_prev; 559 560 struct sctp_s *sctp_listen_hash_next; 561 struct sctp_s *sctp_listen_hash_prev; 562 563 sctp_tf_t *sctp_listen_tfp; /* Ptr to tf */ 564 sctp_tf_t *sctp_conn_tfp; /* Ptr to tf */ 565 566 /* Global list of sctp */ 567 list_node_t sctp_list; 568 569 sctp_faddr_t *sctp_faddrs; 570 int sctp_nfaddrs; 571 sctp_ipif_hash_t sctp_saddrs[SCTP_IPIF_HASH]; 572 int sctp_nsaddrs; 573 574 kmutex_t sctp_lock; 575 kcondvar_t sctp_cv; 576 boolean_t sctp_running; 577 578 #define sctp_ulpd sctp_connp->conn_upper_handle 579 #define sctp_upcalls sctp_connp->conn_upcalls 580 581 #define sctp_ulp_newconn sctp_upcalls->su_newconn 582 #define sctp_ulp_connected sctp_upcalls->su_connected 583 #define sctp_ulp_disconnected sctp_upcalls->su_disconnected 584 #define sctp_ulp_opctl sctp_upcalls->su_opctl 585 #define sctp_ulp_recv sctp_upcalls->su_recv 586 #define sctp_ulp_xmitted sctp_upcalls->su_txq_full 587 #define sctp_ulp_prop sctp_upcalls->su_set_proto_props 588 589 int32_t sctp_state; 590 591 conn_t *sctp_connp; /* conn_t stuff */ 592 sctp_stack_t *sctp_sctps; 593 594 /* Peer address tracking */ 595 sctp_faddr_t *sctp_lastfaddr; /* last faddr in list */ 596 sctp_faddr_t *sctp_primary; /* primary faddr */ 597 sctp_faddr_t *sctp_current; /* current faddr */ 598 sctp_faddr_t *sctp_lastdata; /* last data seen from this */ 599 600 /* Outbound data tracking */ 601 mblk_t *sctp_xmit_head; 602 mblk_t *sctp_xmit_tail; 603 mblk_t *sctp_xmit_unsent; 604 mblk_t *sctp_xmit_unsent_tail; 605 mblk_t *sctp_xmit_unacked; 606 607 int32_t sctp_unacked; /* # of unacked bytes */ 608 int32_t sctp_unsent; /* # of unsent bytes in hand */ 609 610 uint32_t sctp_ltsn; /* Local instance TSN */ 611 uint32_t sctp_lastack_rxd; /* Last rx'd cumtsn */ 612 uint32_t sctp_recovery_tsn; /* Exit from fast recovery */ 613 uint32_t sctp_adv_pap; /* Adv. Peer Ack Point */ 614 615 uint16_t sctp_num_ostr; 616 uint16_t *sctp_ostrcntrs; 617 618 mblk_t *sctp_pad_mp; /* pad unaligned data chunks */ 619 620 /* sendmsg() default parameters */ 621 uint16_t sctp_def_stream; /* default stream id */ 622 uint16_t sctp_def_flags; /* default xmit flags */ 623 uint32_t sctp_def_ppid; /* default payload id */ 624 uint32_t sctp_def_context; /* default context */ 625 uint32_t sctp_def_timetolive; /* default msg TTL */ 626 627 /* Inbound data tracking */ 628 sctp_set_t *sctp_sack_info; /* Sack tracking */ 629 mblk_t *sctp_ack_mp; /* Delayed ACK timer block */ 630 sctp_instr_t *sctp_instr; /* Instream trackers */ 631 mblk_t *sctp_uo_frags; /* Un-ordered msg. fragments */ 632 uint32_t sctp_ftsn; /* Peer's TSN */ 633 uint32_t sctp_lastacked; /* last cumtsn SACKd */ 634 uint16_t sctp_num_istr; /* No. of instreams */ 635 int32_t sctp_istr_nmsgs; /* No. of chunks in instreams */ 636 int32_t sctp_sack_gaps; /* No. of received gaps */ 637 int32_t sctp_sack_toggle; /* SACK every other pkt */ 638 639 /* RTT calculation */ 640 uint32_t sctp_rtt_tsn; 641 int64_t sctp_out_time; 642 643 /* Stats can be reset by snmp users kstat, netstat and snmp agents */ 644 uint64_t sctp_opkts; /* sent pkts */ 645 uint64_t sctp_obchunks; /* sent control chunks */ 646 uint64_t sctp_odchunks; /* sent ordered data chunks */ 647 uint64_t sctp_oudchunks; /* sent unord data chunks */ 648 uint64_t sctp_rxtchunks; /* retransmitted chunks */ 649 uint64_t sctp_ipkts; /* recv pkts */ 650 uint64_t sctp_ibchunks; /* recv control chunks */ 651 uint64_t sctp_idchunks; /* recv ordered data chunks */ 652 uint64_t sctp_iudchunks; /* recv unord data chunks */ 653 uint64_t sctp_fragdmsgs; 654 uint64_t sctp_reassmsgs; 655 uint32_t sctp_T1expire; /* # of times T1timer expired */ 656 uint32_t sctp_T2expire; /* # of times T2timer expired */ 657 uint32_t sctp_T3expire; /* # of times T3timer expired */ 658 uint32_t sctp_assoc_start_time; /* time when assoc was est. */ 659 660 uint32_t sctp_frwnd; /* Peer RWND */ 661 uint32_t sctp_cwnd_max; 662 663 /* Inbound flow control */ 664 int32_t sctp_rwnd; /* Current receive window */ 665 int32_t sctp_irwnd; /* Initial receive window */ 666 int32_t sctp_rxqueued; /* No. of bytes in RX q's */ 667 668 /* Pre-initialized composite headers */ 669 uchar_t *sctp_iphc; /* v4 sctp/ip hdr template buffer */ 670 uchar_t *sctp_iphc6; /* v6 sctp/ip hdr template buffer */ 671 672 int32_t sctp_iphc_len; /* actual allocated v4 buffer size */ 673 int32_t sctp_iphc6_len; /* actual allocated v6 buffer size */ 674 675 int32_t sctp_hdr_len; /* len of combined SCTP/IP v4 hdr */ 676 int32_t sctp_hdr6_len; /* len of combined SCTP/IP v6 hdr */ 677 678 ipha_t *sctp_ipha; /* IPv4 header in the buffer */ 679 ip6_t *sctp_ip6h; /* IPv6 header in the buffer */ 680 681 int32_t sctp_ip_hdr_len; /* Byte len of our current v4 hdr */ 682 int32_t sctp_ip_hdr6_len; /* Byte len of our current v6 hdr */ 683 684 sctp_hdr_t *sctp_sctph; /* sctp header in combined v4 hdr */ 685 sctp_hdr_t *sctp_sctph6; /* sctp header in combined v6 hdr */ 686 687 uint32_t sctp_lvtag; /* local SCTP instance verf tag */ 688 uint32_t sctp_fvtag; /* Peer's SCTP verf tag */ 689 690 /* Path MTU Discovery */ 691 int64_t sctp_last_mtu_probe; 692 clock_t sctp_mtu_probe_intvl; 693 uint32_t sctp_mss; /* Max send size (not TCP MSS!) */ 694 695 /* structs sctp_bits, sctp_events are for clearing all bits at once */ 696 struct { 697 uint32_t 698 699 sctp_understands_asconf : 1, /* Peer handles ASCONF chunks */ 700 sctp_cchunk_pend : 1, /* Control chunk in flight. */ 701 sctp_lingering : 1, /* Lingering in close */ 702 sctp_loopback: 1, /* src and dst are the same machine */ 703 704 sctp_force_sack : 1, 705 sctp_ack_timer_running: 1, /* Delayed ACK timer running */ 706 sctp_hwcksum : 1, /* The NIC is capable of hwcksum */ 707 sctp_understands_addip : 1, 708 709 sctp_bound_to_all : 1, 710 sctp_cansleep : 1, /* itf routines can sleep */ 711 sctp_detached : 1, /* If we're detached from a stream */ 712 sctp_send_adaptation : 1, /* send adaptation layer ind */ 713 714 sctp_recv_adaptation : 1, /* recv adaptation layer ind */ 715 sctp_ndelay : 1, /* turn off Nagle */ 716 sctp_condemned : 1, /* this sctp is about to disappear */ 717 sctp_chk_fast_rexmit : 1, /* check for fast rexmit message */ 718 719 sctp_prsctp_aware : 1, /* is peer PR-SCTP aware? */ 720 sctp_linklocal : 1, /* is linklocal assoc. */ 721 sctp_rexmitting : 1, /* SCTP is retransmitting */ 722 sctp_zero_win_probe : 1, /* doing zero win probe */ 723 724 sctp_txq_full : 1, /* the tx queue is full */ 725 sctp_ulp_discon_done : 1, /* ulp_disconnecting done */ 726 sctp_dummy : 6; 727 } sctp_bits; 728 struct { 729 uint32_t 730 731 sctp_recvsndrcvinfo : 1, 732 sctp_recvassocevnt : 1, 733 sctp_recvpathevnt : 1, 734 sctp_recvsendfailevnt : 1, 735 736 sctp_recvpeererr : 1, 737 sctp_recvshutdownevnt : 1, 738 sctp_recvpdevnt : 1, 739 sctp_recvalevnt : 1; 740 } sctp_events; 741 #define sctp_priv_stream sctp_bits.sctp_priv_stream 742 #define sctp_understands_asconf sctp_bits.sctp_understands_asconf 743 #define sctp_cchunk_pend sctp_bits.sctp_cchunk_pend 744 #define sctp_lingering sctp_bits.sctp_lingering 745 #define sctp_loopback sctp_bits.sctp_loopback 746 #define sctp_force_sack sctp_bits.sctp_force_sack 747 #define sctp_ack_timer_running sctp_bits.sctp_ack_timer_running 748 #define sctp_hwcksum sctp_bits.sctp_hwcksum 749 #define sctp_understands_addip sctp_bits.sctp_understands_addip 750 #define sctp_bound_to_all sctp_bits.sctp_bound_to_all 751 #define sctp_cansleep sctp_bits.sctp_cansleep 752 #define sctp_detached sctp_bits.sctp_detached 753 #define sctp_send_adaptation sctp_bits.sctp_send_adaptation 754 #define sctp_recv_adaptation sctp_bits.sctp_recv_adaptation 755 #define sctp_ndelay sctp_bits.sctp_ndelay 756 #define sctp_condemned sctp_bits.sctp_condemned 757 #define sctp_chk_fast_rexmit sctp_bits.sctp_chk_fast_rexmit 758 #define sctp_prsctp_aware sctp_bits.sctp_prsctp_aware 759 #define sctp_linklocal sctp_bits.sctp_linklocal 760 #define sctp_rexmitting sctp_bits.sctp_rexmitting 761 #define sctp_zero_win_probe sctp_bits.sctp_zero_win_probe 762 #define sctp_txq_full sctp_bits.sctp_txq_full 763 #define sctp_ulp_discon_done sctp_bits.sctp_ulp_discon_done 764 765 #define sctp_recvsndrcvinfo sctp_events.sctp_recvsndrcvinfo 766 #define sctp_recvassocevnt sctp_events.sctp_recvassocevnt 767 #define sctp_recvpathevnt sctp_events.sctp_recvpathevnt 768 #define sctp_recvsendfailevnt sctp_events.sctp_recvsendfailevnt 769 #define sctp_recvpeererr sctp_events.sctp_recvpeererr 770 #define sctp_recvshutdownevnt sctp_events.sctp_recvshutdownevnt 771 #define sctp_recvpdevnt sctp_events.sctp_recvpdevnt 772 #define sctp_recvalevnt sctp_events.sctp_recvalevnt 773 774 /* Retransmit info */ 775 mblk_t *sctp_cookie_mp; /* cookie chunk, if rxt needed */ 776 int32_t sctp_strikes; /* Total number of assoc strikes */ 777 int32_t sctp_max_init_rxt; 778 int32_t sctp_pa_max_rxt; /* Max per-assoc retransmit cnt */ 779 int32_t sctp_pp_max_rxt; /* Max per-path retransmit cnt */ 780 uint32_t sctp_rto_max; 781 uint32_t sctp_rto_max_init; 782 uint32_t sctp_rto_min; 783 uint32_t sctp_rto_initial; 784 785 int64_t sctp_last_secret_update; 786 uint8_t sctp_secret[SCTP_SECRET_LEN]; /* for cookie auth */ 787 uint8_t sctp_old_secret[SCTP_SECRET_LEN]; 788 uint32_t sctp_cookie_lifetime; /* cookie lifetime in tick */ 789 790 /* Bind hash tables */ 791 kmutex_t *sctp_bind_lockp; /* Ptr to tf_lock */ 792 struct sctp_s *sctp_bind_hash; 793 struct sctp_s **sctp_ptpbhn; 794 795 /* Shutdown / cleanup */ 796 sctp_faddr_t *sctp_shutdown_faddr; /* rotate faddr during shutd */ 797 int32_t sctp_client_errno; /* How the client screwed up */ 798 kmutex_t sctp_reflock; /* Protects sctp_refcnt & timer mp */ 799 ushort_t sctp_refcnt; /* No. of pending upstream msg */ 800 mblk_t *sctp_timer_mp; /* List of fired timers. */ 801 802 mblk_t *sctp_heartbeat_mp; /* Timer block for heartbeats */ 803 uint32_t sctp_hb_interval; /* Default hb_interval */ 804 805 int32_t sctp_autoclose; /* Auto disconnect in ticks */ 806 int64_t sctp_active; /* Last time data/sack on this conn */ 807 uint32_t sctp_tx_adaptation_code; /* TX adaptation code */ 808 uint32_t sctp_rx_adaptation_code; /* RX adaptation code */ 809 810 /* Reliable control chunks */ 811 mblk_t *sctp_cxmit_list; /* Xmit list for control chunks */ 812 uint32_t sctp_lcsn; /* Our serial number */ 813 uint32_t sctp_fcsn; /* Peer serial number */ 814 815 /* Per association receive queue */ 816 kmutex_t sctp_recvq_lock; 817 mblk_t *sctp_recvq; 818 mblk_t *sctp_recvq_tail; 819 taskq_t *sctp_recvq_tq; 820 821 /* IPv6 ancillary data */ 822 uint_t sctp_recvifindex; /* last rcvd IPV6_RCVPKTINFO */ 823 uint_t sctp_recvhops; /* " IPV6_RECVHOPLIMIT */ 824 uint_t sctp_recvtclass; /* " IPV6_RECVTCLASS */ 825 ip6_hbh_t *sctp_hopopts; /* " IPV6_RECVHOPOPTS */ 826 ip6_dest_t *sctp_dstopts; /* " IPV6_RECVDSTOPTS */ 827 ip6_dest_t *sctp_rthdrdstopts; /* " IPV6_RECVRTHDRDSTOPTS */ 828 ip6_rthdr_t *sctp_rthdr; /* " IPV6_RECVRTHDR */ 829 uint_t sctp_hopoptslen; 830 uint_t sctp_dstoptslen; 831 uint_t sctp_rthdrdstoptslen; 832 uint_t sctp_rthdrlen; 833 834 /* Stats */ 835 uint64_t sctp_msgcount; 836 uint64_t sctp_prsctpdrop; 837 838 uint_t sctp_v4label_len; /* length of cached v4 label */ 839 uint_t sctp_v6label_len; /* length of cached v6 label */ 840 uint32_t sctp_rxt_nxttsn; /* Next TSN to be rexmitted */ 841 uint32_t sctp_rxt_maxtsn; /* Max TSN sent at time out */ 842 843 int sctp_pd_point; /* Partial delivery point */ 844 mblk_t *sctp_err_chunks; /* Error chunks */ 845 uint32_t sctp_err_len; /* Total error chunks length */ 846 847 /* additional source data for per endpoint association statistics */ 848 uint64_t sctp_outseqtsns; /* TSN rx > expected TSN */ 849 uint64_t sctp_osacks; /* total sacks sent */ 850 uint64_t sctp_isacks; /* total sacks received */ 851 uint64_t sctp_idupchunks; /* rx dups, ord or unord */ 852 uint64_t sctp_gapcnt; /* total gap acks rx */ 853 /* 854 * Add the current data from the counters which are reset by snmp 855 * to these cumulative counters to use in per endpoint statistics. 856 */ 857 uint64_t sctp_cum_obchunks; /* sent control chunks */ 858 uint64_t sctp_cum_odchunks; /* sent ordered data chunks */ 859 uint64_t sctp_cum_oudchunks; /* sent unord data chunks */ 860 uint64_t sctp_cum_rxtchunks; /* retransmitted chunks */ 861 uint64_t sctp_cum_ibchunks; /* recv control chunks */ 862 uint64_t sctp_cum_idchunks; /* recv ordered data chunks */ 863 uint64_t sctp_cum_iudchunks; /* recv unord data chunks */ 864 865 /* 866 * When non-zero, this is the maximum observed RTO since assoc stats 867 * were last requested. When zero, no RTO update has occurred since 868 * the previous user request for stats on this endpoint. 869 */ 870 int sctp_maxrto; 871 /* 872 * The stored value of sctp_maxrto passed to user during the previous 873 * user request for stats on this endpoint. 874 */ 875 int sctp_prev_maxrto; 876 } sctp_t; 877 878 #define SCTP_TXQ_LEN(sctp) ((sctp)->sctp_unsent + (sctp)->sctp_unacked) 879 #define SCTP_TXQ_UPDATE(sctp) \ 880 if ((sctp)->sctp_txq_full && SCTP_TXQ_LEN(sctp) <= \ 881 (sctp)->sctp_connp->conn_sndlowat) { \ 882 (sctp)->sctp_txq_full = 0; \ 883 (sctp)->sctp_ulp_xmitted((sctp)->sctp_ulpd, \ 884 B_FALSE); \ 885 } 886 887 #endif /* (defined(_KERNEL) || defined(_KMEMUSER)) */ 888 889 extern void sctp_ack_timer(sctp_t *); 890 extern size_t sctp_adaptation_code_param(sctp_t *, uchar_t *); 891 extern void sctp_adaptation_event(sctp_t *); 892 extern void sctp_add_err(sctp_t *, uint16_t, void *, size_t, 893 sctp_faddr_t *); 894 extern int sctp_add_faddr(sctp_t *, in6_addr_t *, int, boolean_t); 895 extern boolean_t sctp_add_ftsn_set(sctp_ftsn_set_t **, sctp_faddr_t *, mblk_t *, 896 uint_t *, uint32_t *); 897 extern void sctp_add_recvq(sctp_t *, mblk_t *, boolean_t, 898 ip_recv_attr_t *); 899 extern void sctp_add_unrec_parm(sctp_parm_hdr_t *, mblk_t **, boolean_t); 900 extern size_t sctp_addr_params(sctp_t *, int, uchar_t *, boolean_t); 901 extern mblk_t *sctp_add_proto_hdr(sctp_t *, sctp_faddr_t *, mblk_t *, int, 902 int *); 903 extern void sctp_addr_req(sctp_t *, mblk_t *); 904 extern sctp_t *sctp_addrlist2sctp(mblk_t *, sctp_hdr_t *, sctp_chunk_hdr_t *, 905 zoneid_t, sctp_stack_t *); 906 extern void sctp_check_adv_ack_pt(sctp_t *, mblk_t *, mblk_t *); 907 extern void sctp_assoc_event(sctp_t *, uint16_t, uint16_t, 908 sctp_chunk_hdr_t *); 909 910 extern void sctp_bind_hash_insert(sctp_tf_t *, sctp_t *, int); 911 extern void sctp_bind_hash_remove(sctp_t *); 912 extern int sctp_bindi(sctp_t *, in_port_t, boolean_t, int, in_port_t *); 913 extern int sctp_bind_add(sctp_t *, const void *, uint32_t, boolean_t, 914 in_port_t); 915 extern int sctp_bind_del(sctp_t *, const void *, uint32_t, boolean_t); 916 extern int sctp_build_hdrs(sctp_t *, int); 917 918 extern int sctp_check_abandoned_msg(sctp_t *, mblk_t *); 919 extern void sctp_clean_death(sctp_t *, int); 920 extern void sctp_close_eager(sctp_t *); 921 extern int sctp_compare_faddrsets(sctp_faddr_t *, sctp_faddr_t *); 922 extern void sctp_congest_reset(sctp_t *); 923 extern void sctp_conn_hash_insert(sctp_tf_t *, sctp_t *, int); 924 extern void sctp_conn_hash_remove(sctp_t *); 925 extern void sctp_conn_init(conn_t *); 926 extern sctp_t *sctp_conn_match(in6_addr_t **, uint32_t, in6_addr_t *, 927 uint32_t, zoneid_t, iaflags_t, sctp_stack_t *); 928 extern sctp_t *sctp_conn_request(sctp_t *, mblk_t *, uint_t, uint_t, 929 sctp_init_chunk_t *, ip_recv_attr_t *); 930 extern uint32_t sctp_cumack(sctp_t *, uint32_t, mblk_t **); 931 extern sctp_t *sctp_create_eager(sctp_t *); 932 933 extern void sctp_dispatch_rput(queue_t *, sctp_t *, sctp_hdr_t *, mblk_t *, 934 uint_t, uint_t, in6_addr_t); 935 extern char *sctp_display(sctp_t *, char *); 936 extern void sctp_display_all(sctp_stack_t *); 937 938 extern void sctp_error_event(sctp_t *, sctp_chunk_hdr_t *, boolean_t); 939 940 extern void sctp_faddr_alive(sctp_t *, sctp_faddr_t *); 941 extern int sctp_faddr_dead(sctp_t *, sctp_faddr_t *, int); 942 extern void sctp_faddr_fini(void); 943 extern void sctp_faddr_init(void); 944 extern void sctp_fast_rexmit(sctp_t *); 945 extern void sctp_fill_sack(sctp_t *, unsigned char *, int); 946 extern void sctp_free_faddr_timers(sctp_t *); 947 extern void sctp_free_ftsn_set(sctp_ftsn_set_t *); 948 extern void sctp_free_msg(mblk_t *); 949 extern void sctp_free_reass(sctp_instr_t *); 950 extern void sctp_free_set(sctp_set_t *); 951 extern void sctp_ftsn_sets_fini(void); 952 extern void sctp_ftsn_sets_init(void); 953 954 extern int sctp_get_addrlist(sctp_t *, const void *, uint32_t *, 955 uchar_t **, int *, size_t *); 956 extern int sctp_get_addrparams(sctp_t *, sctp_t *, mblk_t *, 957 sctp_chunk_hdr_t *, uint_t *); 958 extern void sctp_get_dest(sctp_t *, sctp_faddr_t *); 959 extern void sctp_get_faddr_list(sctp_t *, uchar_t *, size_t); 960 extern mblk_t *sctp_get_first_sent(sctp_t *); 961 extern mblk_t *sctp_get_msg_to_send(sctp_t *, mblk_t **, mblk_t *, int *, 962 int32_t, uint32_t, sctp_faddr_t *); 963 extern void sctp_get_saddr_list(sctp_t *, uchar_t *, size_t); 964 965 extern int sctp_handle_error(sctp_t *, sctp_hdr_t *, sctp_chunk_hdr_t *, 966 mblk_t *, ip_recv_attr_t *); 967 extern void sctp_hash_destroy(sctp_stack_t *); 968 extern void sctp_hash_init(sctp_stack_t *); 969 extern void sctp_heartbeat_timer(sctp_t *); 970 971 extern void sctp_icmp_error(sctp_t *, mblk_t *); 972 extern void sctp_inc_taskq(sctp_stack_t *); 973 extern void sctp_info_req(sctp_t *, mblk_t *); 974 extern mblk_t *sctp_init_mp(sctp_t *, sctp_faddr_t *); 975 extern boolean_t sctp_initialize_params(sctp_t *, sctp_init_chunk_t *, 976 sctp_init_chunk_t *); 977 extern uint32_t sctp_init2vtag(sctp_chunk_hdr_t *); 978 extern void sctp_intf_event(sctp_t *, in6_addr_t, int, int); 979 extern void sctp_input_data(sctp_t *, mblk_t *, ip_recv_attr_t *); 980 extern void sctp_instream_cleanup(sctp_t *, boolean_t); 981 extern int sctp_is_a_faddr_clean(sctp_t *); 982 983 extern void *sctp_kstat_init(netstackid_t); 984 extern void sctp_kstat_fini(netstackid_t, kstat_t *); 985 extern void *sctp_kstat2_init(netstackid_t, sctp_kstat_t *); 986 extern void sctp_kstat2_fini(netstackid_t, kstat_t *); 987 988 extern ssize_t sctp_link_abort(mblk_t *, uint16_t, char *, size_t, int, 989 boolean_t); 990 extern void sctp_listen_hash_insert(sctp_tf_t *, sctp_t *); 991 extern void sctp_listen_hash_remove(sctp_t *); 992 extern sctp_t *sctp_lookup(sctp_t *, in6_addr_t *, sctp_tf_t *, uint32_t *, 993 int); 994 extern sctp_faddr_t *sctp_lookup_faddr(sctp_t *, in6_addr_t *); 995 996 extern mblk_t *sctp_make_err(sctp_t *, uint16_t, void *, size_t); 997 extern mblk_t *sctp_make_ftsn_chunk(sctp_t *, sctp_faddr_t *, 998 sctp_ftsn_set_t *, uint_t, uint32_t); 999 extern void sctp_make_ftsns(sctp_t *, mblk_t *, mblk_t *, mblk_t **, 1000 sctp_faddr_t *, uint32_t *); 1001 extern mblk_t *sctp_make_mp(sctp_t *, sctp_faddr_t *, int); 1002 extern mblk_t *sctp_make_sack(sctp_t *, sctp_faddr_t *, mblk_t *); 1003 extern void sctp_maxpsz_set(sctp_t *); 1004 extern void sctp_move_faddr_timers(queue_t *, sctp_t *); 1005 1006 extern sctp_parm_hdr_t *sctp_next_parm(sctp_parm_hdr_t *, ssize_t *); 1007 1008 extern void sctp_ootb_shutdown_ack(mblk_t *, uint_t, ip_recv_attr_t *, 1009 ip_stack_t *); 1010 extern size_t sctp_options_param(const sctp_t *, void *, int); 1011 extern size_t sctp_options_param_len(const sctp_t *, int); 1012 extern void sctp_output(sctp_t *, uint_t); 1013 1014 extern void sctp_partial_delivery_event(sctp_t *); 1015 extern int sctp_process_cookie(sctp_t *, sctp_chunk_hdr_t *, mblk_t *, 1016 sctp_init_chunk_t **, sctp_hdr_t *, int *, in6_addr_t *, 1017 ip_recv_attr_t *); 1018 extern void sctp_process_err(sctp_t *); 1019 extern void sctp_process_heartbeat(sctp_t *, sctp_chunk_hdr_t *); 1020 extern void sctp_process_timer(sctp_t *); 1021 1022 extern void sctp_redo_faddr_srcs(sctp_t *); 1023 extern void sctp_regift_xmitlist(sctp_t *); 1024 extern void sctp_return_heartbeat(sctp_t *, sctp_chunk_hdr_t *, mblk_t *); 1025 extern void sctp_rexmit(sctp_t *, sctp_faddr_t *); 1026 extern mblk_t *sctp_rexmit_packet(sctp_t *, mblk_t **, mblk_t **, 1027 sctp_faddr_t *, uint_t *); 1028 extern void sctp_rexmit_timer(sctp_t *, sctp_faddr_t *); 1029 extern sctp_faddr_t *sctp_rotate_faddr(sctp_t *, sctp_faddr_t *); 1030 1031 extern boolean_t sctp_sack(sctp_t *, mblk_t *); 1032 extern int sctp_secure_restart_check(mblk_t *, sctp_chunk_hdr_t *, 1033 uint32_t, int, sctp_stack_t *, ip_recv_attr_t *); 1034 extern void sctp_send_abort(sctp_t *, uint32_t, uint16_t, char *, size_t, 1035 mblk_t *, int, boolean_t, ip_recv_attr_t *); 1036 extern void sctp_ootb_send_abort(uint32_t, uint16_t, char *, size_t, 1037 const mblk_t *, int, boolean_t, ip_recv_attr_t *, 1038 ip_stack_t *); 1039 extern void sctp_send_cookie_ack(sctp_t *); 1040 extern void sctp_send_cookie_echo(sctp_t *, sctp_chunk_hdr_t *, mblk_t *, 1041 ip_recv_attr_t *); 1042 extern void sctp_send_initack(sctp_t *, sctp_hdr_t *, sctp_chunk_hdr_t *, 1043 mblk_t *, ip_recv_attr_t *); 1044 extern void sctp_send_shutdown(sctp_t *, int); 1045 extern void sctp_send_heartbeat(sctp_t *, sctp_faddr_t *); 1046 extern void sctp_sendfail_event(sctp_t *, mblk_t *, int, boolean_t); 1047 extern void sctp_set_faddr_current(sctp_t *, sctp_faddr_t *); 1048 extern int sctp_set_hdraddrs(sctp_t *); 1049 extern void sctp_set_saddr(sctp_t *, sctp_faddr_t *); 1050 extern void sctp_sets_init(void); 1051 extern void sctp_sets_fini(void); 1052 extern void sctp_shutdown_event(sctp_t *); 1053 extern void sctp_stop_faddr_timers(sctp_t *); 1054 extern int sctp_shutdown_received(sctp_t *, sctp_chunk_hdr_t *, boolean_t, 1055 boolean_t, sctp_faddr_t *); 1056 extern void sctp_shutdown_complete(sctp_t *); 1057 extern void sctp_set_if_mtu(sctp_t *); 1058 extern void sctp_set_iplen(sctp_t *, mblk_t *, ip_xmit_attr_t *); 1059 extern void sctp_set_ulp_prop(sctp_t *); 1060 extern void sctp_ss_rexmit(sctp_t *); 1061 extern size_t sctp_supaddr_param_len(sctp_t *); 1062 extern size_t sctp_supaddr_param(sctp_t *, uchar_t *); 1063 1064 extern void sctp_timer(sctp_t *, mblk_t *, clock_t); 1065 extern mblk_t *sctp_timer_alloc(sctp_t *, pfv_t, int); 1066 extern void sctp_timer_call(sctp_t *sctp, mblk_t *); 1067 extern void sctp_timer_free(mblk_t *); 1068 extern void sctp_timer_stop(mblk_t *); 1069 extern void sctp_unlink_faddr(sctp_t *, sctp_faddr_t *); 1070 1071 extern void sctp_update_dce(sctp_t *sctp); 1072 extern in_port_t sctp_update_next_port(in_port_t, zone_t *zone, sctp_stack_t *); 1073 extern void sctp_update_rtt(sctp_t *, sctp_faddr_t *, clock_t); 1074 extern void sctp_user_abort(sctp_t *, mblk_t *); 1075 1076 extern void sctp_validate_peer(sctp_t *); 1077 1078 extern int sctp_xmit_list_clean(sctp_t *, ssize_t); 1079 1080 extern void sctp_zap_addrs(sctp_t *); 1081 extern void sctp_zap_faddrs(sctp_t *, int); 1082 extern sctp_chunk_hdr_t *sctp_first_chunk(uchar_t *, ssize_t); 1083 1084 /* Contract private interface between SCTP and Clustering - PSARC/2005/602 */ 1085 1086 extern void (*cl_sctp_listen)(sa_family_t, uchar_t *, uint_t, in_port_t); 1087 extern void (*cl_sctp_unlisten)(sa_family_t, uchar_t *, uint_t, in_port_t); 1088 extern void (*cl_sctp_connect)(sa_family_t, uchar_t *, uint_t, in_port_t, 1089 uchar_t *, uint_t, in_port_t, boolean_t, cl_sctp_handle_t); 1090 extern void (*cl_sctp_disconnect)(sa_family_t, cl_sctp_handle_t); 1091 extern void (*cl_sctp_assoc_change)(sa_family_t, uchar_t *, size_t, uint_t, 1092 uchar_t *, size_t, uint_t, int, cl_sctp_handle_t); 1093 extern void (*cl_sctp_check_addrs)(sa_family_t, in_port_t, uchar_t **, 1094 size_t, uint_t *, boolean_t); 1095 1096 #define RUN_SCTP(sctp) \ 1097 { \ 1098 mutex_enter(&(sctp)->sctp_lock); \ 1099 while ((sctp)->sctp_running) \ 1100 cv_wait(&(sctp)->sctp_cv, &(sctp)->sctp_lock); \ 1101 (sctp)->sctp_running = B_TRUE; \ 1102 mutex_exit(&(sctp)->sctp_lock); \ 1103 } 1104 1105 /* Wake up recvq taskq */ 1106 #define WAKE_SCTP(sctp) \ 1107 { \ 1108 mutex_enter(&(sctp)->sctp_lock); \ 1109 if ((sctp)->sctp_timer_mp != NULL) \ 1110 sctp_process_timer(sctp); \ 1111 (sctp)->sctp_running = B_FALSE; \ 1112 cv_broadcast(&(sctp)->sctp_cv); \ 1113 mutex_exit(&(sctp)->sctp_lock); \ 1114 } 1115 1116 #ifdef __cplusplus 1117 } 1118 #endif 1119 1120 #endif /* _INET_SCTP_SCTP_IMPL_H */ 1121