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 2009 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 #include <sys/inttypes.h> 31 #include <sys/taskq.h> 32 #include <sys/list.h> 33 #include <sys/strsun.h> 34 #include <sys/zone.h> 35 #include <netinet/ip6.h> 36 #include <inet/optcom.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 parameters 78 */ 79 /* Named Dispatch Parameter Management Structure */ 80 typedef struct sctpparam_s { 81 uint32_t sctp_param_min; 82 uint32_t sctp_param_max; 83 uint32_t sctp_param_val; 84 char *sctp_param_name; 85 } sctpparam_t; 86 87 #define sctps_max_init_retr sctps_params[0].sctp_param_val 88 #define sctps_max_init_retr_high sctps_params[0].sctp_param_max 89 #define sctps_max_init_retr_low sctps_params[0].sctp_param_min 90 #define sctps_pa_max_retr sctps_params[1].sctp_param_val 91 #define sctps_pa_max_retr_high sctps_params[1].sctp_param_max 92 #define sctps_pa_max_retr_low sctps_params[1].sctp_param_min 93 #define sctps_pp_max_retr sctps_params[2].sctp_param_val 94 #define sctps_pp_max_retr_high sctps_params[2].sctp_param_max 95 #define sctps_pp_max_retr_low sctps_params[2].sctp_param_min 96 #define sctps_cwnd_max_ sctps_params[3].sctp_param_val 97 #define __sctps_not_used1 sctps_params[4].sctp_param_val 98 #define sctps_smallest_nonpriv_port sctps_params[5].sctp_param_val 99 #define sctps_ipv4_ttl sctps_params[6].sctp_param_val 100 #define sctps_heartbeat_interval sctps_params[7].sctp_param_val 101 #define sctps_heartbeat_interval_high sctps_params[7].sctp_param_max 102 #define sctps_heartbeat_interval_low sctps_params[7].sctp_param_min 103 #define sctps_initial_mtu sctps_params[8].sctp_param_val 104 #define sctps_mtu_probe_interval sctps_params[9].sctp_param_val 105 #define sctps_new_secret_interval sctps_params[10].sctp_param_val 106 #define sctps_deferred_ack_interval sctps_params[11].sctp_param_val 107 #define sctps_snd_lowat_fraction sctps_params[12].sctp_param_val 108 #define sctps_ignore_path_mtu sctps_params[13].sctp_param_val 109 #define sctps_initial_ssthresh sctps_params[14].sctp_param_val 110 #define sctps_smallest_anon_port sctps_params[15].sctp_param_val 111 #define sctps_largest_anon_port sctps_params[16].sctp_param_val 112 #define sctps_xmit_hiwat sctps_params[17].sctp_param_val 113 #define sctps_xmit_lowat sctps_params[18].sctp_param_val 114 #define sctps_recv_hiwat sctps_params[19].sctp_param_val 115 #define sctps_max_buf sctps_params[20].sctp_param_val 116 #define sctps_rtt_updates sctps_params[21].sctp_param_val 117 #define sctps_ipv6_hoplimit sctps_params[22].sctp_param_val 118 #define sctps_rto_ming sctps_params[23].sctp_param_val 119 #define sctps_rto_ming_high sctps_params[23].sctp_param_max 120 #define sctps_rto_ming_low sctps_params[23].sctp_param_min 121 #define sctps_rto_maxg sctps_params[24].sctp_param_val 122 #define sctps_rto_maxg_high sctps_params[24].sctp_param_max 123 #define sctps_rto_maxg_low sctps_params[24].sctp_param_min 124 #define sctps_rto_initialg sctps_params[25].sctp_param_val 125 #define sctps_rto_initialg_high sctps_params[25].sctp_param_max 126 #define sctps_rto_initialg_low sctps_params[25].sctp_param_min 127 #define sctps_cookie_life sctps_params[26].sctp_param_val 128 #define sctps_cookie_life_high sctps_params[26].sctp_param_max 129 #define sctps_cookie_life_low sctps_params[26].sctp_param_min 130 #define sctps_max_in_streams sctps_params[27].sctp_param_val 131 #define sctps_max_in_streams_high sctps_params[27].sctp_param_max 132 #define sctps_max_in_streams_low sctps_params[27].sctp_param_min 133 #define sctps_initial_out_streams sctps_params[28].sctp_param_val 134 #define sctps_initial_out_streams_high sctps_params[28].sctp_param_max 135 #define sctps_initial_out_streams_low sctps_params[28].sctp_param_min 136 #define sctps_shutack_wait_bound sctps_params[29].sctp_param_val 137 #define sctps_maxburst sctps_params[30].sctp_param_val 138 #define sctps_addip_enabled sctps_params[31].sctp_param_val 139 #define sctps_recv_hiwat_minmss sctps_params[32].sctp_param_val 140 #define sctps_slow_start_initial sctps_params[33].sctp_param_val 141 #define sctps_slow_start_after_idle sctps_params[34].sctp_param_val 142 #define sctps_prsctp_enabled sctps_params[35].sctp_param_val 143 #define sctps_fast_rxt_thresh sctps_params[36].sctp_param_val 144 #define sctps_deferred_acks_max sctps_params[37].sctp_param_val 145 146 /* 147 * sctp_wroff_xtra is the extra space in front of SCTP/IP header for link 148 * layer header. It has to be a multiple of 4. 149 */ 150 #define sctps_wroff_xtra sctps_wroff_xtra_param->sctp_param_val 151 152 /* 153 * Retransmission timer start and stop macro for a given faddr. 154 */ 155 #define SCTP_FADDR_TIMER_RESTART(sctp, fp, intvl) \ 156 { \ 157 dprint(3, ("faddr_timer_restart: fp=%p %x:%x:%x:%x %d\n", \ 158 (void *)(fp), SCTP_PRINTADDR((fp)->faddr), (int)(intvl))); \ 159 sctp_timer((sctp), (fp)->timer_mp, (intvl)); \ 160 (fp)->timer_running = 1; \ 161 } 162 163 #define SCTP_FADDR_TIMER_STOP(fp) \ 164 ASSERT((fp)->timer_mp != NULL); \ 165 if ((fp)->timer_running) { \ 166 sctp_timer_stop((fp)->timer_mp); \ 167 (fp)->timer_running = 0; \ 168 } 169 170 #define SCTP_CALC_RXT(fp, max) \ 171 { \ 172 if (((fp)->rto <<= 1) > (max)) \ 173 (fp)->rto = (max); \ 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 ASSERT((sctp)->sctp_refcnt != 0); \ 187 mutex_exit(&(sctp)->sctp_reflock); \ 188 } 189 190 #define SCTP_REFRELE(sctp) { \ 191 mutex_enter(&(sctp)->sctp_reflock); \ 192 ASSERT((sctp)->sctp_refcnt != 0); \ 193 if (--(sctp)->sctp_refcnt == 0) { \ 194 mutex_exit(&(sctp)->sctp_reflock); \ 195 CONN_DEC_REF((sctp)->sctp_connp); \ 196 } else { \ 197 mutex_exit(&(sctp)->sctp_reflock); \ 198 } \ 199 } 200 201 #define SCTP_G_Q_REFHOLD(sctps) { \ 202 atomic_add_32(&(sctps)->sctps_g_q_ref, 1); \ 203 ASSERT((sctps)->sctps_g_q_ref != 0); \ 204 DTRACE_PROBE1(sctp__g__q__refhold, sctp_stack_t, sctps); \ 205 } 206 207 /* 208 * Decrement the reference count on sctp_g_q 209 * In architectures e.g sun4u, where atomic_add_32_nv is just 210 * a cas, we need to maintain the right memory barrier semantics 211 * as that of mutex_exit i.e all the loads and stores should complete 212 * before the cas is executed. membar_exit() does that here. 213 */ 214 #define SCTP_G_Q_REFRELE(sctps) { \ 215 ASSERT((sctps)->sctps_g_q_ref != 0); \ 216 membar_exit(); \ 217 DTRACE_PROBE1(sctp__g__q__refrele, sctp_stack_t, sctps); \ 218 if (atomic_add_32_nv(&(sctps)->sctps_g_q_ref, -1) == 0) \ 219 sctp_g_q_inactive(sctps); \ 220 } 221 222 #define SCTP_PRINTADDR(a) (a).s6_addr32[0], (a).s6_addr32[1],\ 223 (a).s6_addr32[2], (a).s6_addr32[3] 224 225 #define CONN2SCTP(conn) ((sctp_t *)(&((conn_t *)conn)[1])) 226 227 /* 228 * Outbound data, flags and macros for per-message, per-chunk info 229 */ 230 typedef struct { 231 int64_t smh_ttl; /* Time to Live */ 232 int64_t smh_tob; /* Time of Birth */ 233 uint32_t smh_context; 234 uint16_t smh_sid; 235 uint16_t smh_ssn; 236 uint32_t smh_ppid; 237 uint16_t smh_flags; 238 uint32_t smh_msglen; 239 } sctp_msg_hdr_t; 240 241 #define SCTP_CHUNK_FLAG_SENT 0x01 242 #define SCTP_CHUNK_FLAG_REXMIT 0x02 243 #define SCTP_CHUNK_FLAG_ACKED 0x04 244 #define SCTP_MSG_FLAG_CHUNKED 0x08 245 #define SCTP_MSG_FLAG_ABANDONED 0x10 246 #define SCTP_CHUNK_FLAG_ABANDONED 0x20 247 248 #define SCTP_CHUNK_CLEAR_FLAGS(mp) ((mp)->b_flag = 0) 249 /* 250 * If we are transmitting the chunk for the first time we assign the TSN and 251 * SSN here. The reason we assign the SSN here (as opposed to doing it in 252 * sctp_chunkify()) is that the chunk may expire, if PRSCTP is enabled, before 253 * we get a chance to send it out. If we assign the SSN in sctp_chunkify() 254 * and this happens, then we need to send a Forward TSN to the peer, which 255 * will be expecting this SSN, assuming ordered. If we assign it here we 256 * can just take out the chunk from the transmit list without having to 257 * send a Forward TSN chunk. While assigning the SSN we use (meta)->b_cont 258 * to determine if it needs a new SSN (i.e. the next SSN for the stream), 259 * since (meta)->b_cont signifies the first chunk of a message (if the message 260 * is unordered, then the SSN is 0). 261 * 262 */ 263 #define SCTP_CHUNK_SENT(sctp, mp, sdc, fp, chunkdata, meta) { \ 264 if (!SCTP_CHUNK_ISSENT(mp)) { \ 265 sctp_msg_hdr_t *mhdr = (sctp_msg_hdr_t *)(meta)->b_rptr; \ 266 ASSERT(!SCTP_CHUNK_ABANDONED(mp)); \ 267 (mp)->b_flag = SCTP_CHUNK_FLAG_SENT; \ 268 (sdc)->sdh_tsn = htonl((sctp)->sctp_ltsn++); \ 269 if ((mhdr)->smh_flags & MSG_UNORDERED) { \ 270 (sdc)->sdh_ssn = 0; \ 271 SCTP_DATA_SET_UBIT(sdc); \ 272 BUMP_LOCAL((sctp)->sctp_oudchunks); \ 273 } else { \ 274 BUMP_LOCAL((sctp)->sctp_odchunks); \ 275 if ((mp) == (meta)->b_cont) { \ 276 mhdr->smh_ssn = htons( \ 277 (sctp)->sctp_ostrcntrs[mhdr->smh_sid]++); \ 278 } \ 279 (sdc)->sdh_ssn = mhdr->smh_ssn; \ 280 } \ 281 (sctp)->sctp_unacked += (chunkdata); \ 282 (sctp)->sctp_unsent -= (chunkdata); \ 283 (sctp)->sctp_frwnd -= (chunkdata); \ 284 } else { \ 285 if (SCTP_CHUNK_ISACKED(mp)) { \ 286 (sctp)->sctp_unacked += (chunkdata); \ 287 } else { \ 288 ASSERT(SCTP_CHUNK_DEST(mp)->suna >= ((chunkdata) + \ 289 sizeof (*sdc))); \ 290 SCTP_CHUNK_DEST(mp)->suna -= ((chunkdata) + \ 291 sizeof (*sdc)); \ 292 } \ 293 (mp)->b_flag &= ~(SCTP_CHUNK_FLAG_REXMIT | \ 294 SCTP_CHUNK_FLAG_ACKED); \ 295 SCTP_CHUNK_SET_SACKCNT(mp, 0); \ 296 BUMP_LOCAL(sctp->sctp_rxtchunks); \ 297 BUMP_LOCAL((sctp)->sctp_T3expire); \ 298 BUMP_LOCAL((fp)->T3expire); \ 299 } \ 300 SCTP_SET_CHUNK_DEST(mp, fp); \ 301 (fp)->suna += ((chunkdata) + sizeof (*sdc)); \ 302 } 303 304 #define SCTP_CHUNK_ISSENT(mp) ((mp)->b_flag & SCTP_CHUNK_FLAG_SENT) 305 #define SCTP_CHUNK_CANSEND(mp) \ 306 (!(SCTP_CHUNK_ABANDONED(mp)) && \ 307 (((mp)->b_flag & (SCTP_CHUNK_FLAG_REXMIT|SCTP_CHUNK_FLAG_SENT)) != \ 308 SCTP_CHUNK_FLAG_SENT)) 309 310 #define SCTP_CHUNK_DEST(mp) ((sctp_faddr_t *)(mp)->b_queue) 311 #define SCTP_SET_CHUNK_DEST(mp, fp) ((mp)->b_queue = (queue_t *)fp) 312 313 #define SCTP_CHUNK_REXMIT(mp) ((mp)->b_flag |= SCTP_CHUNK_FLAG_REXMIT) 314 #define SCTP_CHUNK_CLEAR_REXMIT(mp) ((mp)->b_flag &= ~SCTP_CHUNK_FLAG_REXMIT) 315 #define SCTP_CHUNK_WANT_REXMIT(mp) ((mp)->b_flag & SCTP_CHUNK_FLAG_REXMIT) 316 317 #define SCTP_CHUNK_ACKED(mp) \ 318 ((mp)->b_flag = (SCTP_CHUNK_FLAG_SENT|SCTP_CHUNK_FLAG_ACKED)) 319 #define SCTP_CHUNK_ISACKED(mp) ((mp)->b_flag & SCTP_CHUNK_FLAG_ACKED) 320 #define SCTP_CHUNK_CLEAR_ACKED(mp) ((mp)->b_flag &= ~SCTP_CHUNK_FLAG_ACKED) 321 322 #define SCTP_CHUNK_SACKCNT(mp) ((intptr_t)((mp)->b_prev)) 323 #define SCTP_CHUNK_SET_SACKCNT(mp, val) ((mp)->b_prev = \ 324 (mblk_t *)(uintptr_t)(val)) 325 326 #define SCTP_MSG_SET_CHUNKED(mp) ((mp)->b_flag |= SCTP_MSG_FLAG_CHUNKED) 327 #define SCTP_MSG_CLEAR_CHUNKED(mp)((mp)->b_flag &= ~SCTP_MSG_FLAG_CHUNKED) 328 #define SCTP_IS_MSG_CHUNKED(mp) ((mp)->b_flag & SCTP_MSG_FLAG_CHUNKED) 329 330 /* For PR-SCTP */ 331 #define SCTP_ABANDON_CHUNK(mp) ((mp)->b_flag |= SCTP_CHUNK_FLAG_ABANDONED) 332 #define SCTP_CHUNK_ABANDONED(mp) \ 333 ((mp)->b_flag & SCTP_CHUNK_FLAG_ABANDONED) 334 335 #define SCTP_MSG_SET_ABANDONED(mp) \ 336 ((mp)->b_flag |= SCTP_MSG_FLAG_ABANDONED) 337 #define SCTP_MSG_CLEAR_ABANDONED(mp)((mp)->b_flag &= ~SCTP_MSG_FLAG_ABANDONED) 338 #define SCTP_IS_MSG_ABANDONED(mp) ((mp)->b_flag & SCTP_MSG_FLAG_ABANDONED) 339 340 /* 341 * Check if a message has expired. A message is expired if 342 * 1. It has a non-zero time to live value and has not been sent before 343 * that time expires. 344 * 2. It is sent using PRSCTP and it has not been SACK'ed before 345 * its lifetime expires. 346 */ 347 #define SCTP_MSG_TO_BE_ABANDONED(meta, mhdr, sctp) \ 348 (((!SCTP_CHUNK_ISSENT((meta)->b_cont) && (mhdr)->smh_ttl > 0) || \ 349 ((sctp)->sctp_prsctp_aware && ((mhdr)->smh_flags & MSG_PR_SCTP))) && \ 350 ((lbolt64 - (mhdr)->smh_tob) > (mhdr)->smh_ttl)) 351 352 /* SCTP association hash function. */ 353 #define SCTP_CONN_HASH(sctps, ports) \ 354 ((((ports) ^ ((ports) >> 16)) * 31) & \ 355 ((sctps)->sctps_conn_hash_size - 1)) 356 357 /* 358 * Bind hash array size and hash function. The size must be a power 359 * of 2 and lport must be in host byte order. 360 */ 361 #define SCTP_BIND_FANOUT_SIZE 2048 362 #define SCTP_BIND_HASH(lport) (((lport) * 31) & (SCTP_BIND_FANOUT_SIZE - 1)) 363 364 /* options that SCTP negotiates during association establishment */ 365 #define SCTP_PRSCTP_OPTION 0x01 366 367 /* 368 * Listener hash array size and hash function. The size must be a power 369 * of 2 and lport must be in host byte order. 370 */ 371 #define SCTP_LISTEN_FANOUT_SIZE 512 372 #define SCTP_LISTEN_HASH(lport) (((lport) * 31) & (SCTP_LISTEN_FANOUT_SIZE - 1)) 373 374 typedef struct sctp_tf_s { 375 struct sctp_s *tf_sctp; 376 kmutex_t tf_lock; 377 } sctp_tf_t; 378 379 /* Round up the value to the nearest mss. */ 380 #define MSS_ROUNDUP(value, mss) ((((value) - 1) / (mss) + 1) * (mss)) 381 382 extern sin_t sctp_sin_null; /* Zero address for quick clears */ 383 extern sin6_t sctp_sin6_null; /* Zero address for quick clears */ 384 385 #define SCTP_IS_DETACHED(sctp) ((sctp)->sctp_detached) 386 387 /* 388 * Object to represent database of options to search passed to 389 * {sock,tpi}optcom_req() interface routine to take care of option 390 * management and associated methods. 391 * XXX These and other externs should ideally move to a SCTP header 392 */ 393 extern optdb_obj_t sctp_opt_obj; 394 extern uint_t sctp_max_optbuf_len; 395 396 /* Data structure used to track received TSNs */ 397 typedef struct sctp_set_s { 398 struct sctp_set_s *next; 399 struct sctp_set_s *prev; 400 uint32_t begin; 401 uint32_t end; 402 } sctp_set_t; 403 404 /* Data structure used to track TSNs for PR-SCTP */ 405 typedef struct sctp_ftsn_set_s { 406 struct sctp_ftsn_set_s *next; 407 ftsn_entry_t ftsn_entries; 408 } sctp_ftsn_set_t; 409 410 /* Data structure used to track incoming SCTP streams */ 411 typedef struct sctp_instr_s { 412 mblk_t *istr_msgs; 413 int istr_nmsgs; 414 uint16_t nextseq; 415 struct sctp_s *sctp; 416 mblk_t *istr_reass; 417 } sctp_instr_t; 418 419 /* Reassembly data structure (per-stream) */ 420 typedef struct sctp_reass_s { 421 uint16_t ssn; 422 uint16_t needed; 423 uint16_t got; 424 uint16_t msglen; /* len of consecutive fragments */ 425 /* from the begining (B-bit) */ 426 mblk_t *tail; 427 boolean_t hasBchunk; /* If the fragment list begins with */ 428 /* a B-bit set chunk */ 429 uint32_t nexttsn; /* TSN of the next fragment we */ 430 /* are expecting */ 431 boolean_t partial_delivered; 432 } sctp_reass_t; 433 434 /* debugging */ 435 #undef dprint 436 #ifdef DEBUG 437 extern int sctpdebug; 438 #define dprint(level, args) { if (sctpdebug > (level)) printf args; } 439 #else 440 #define dprint(level, args) {} 441 #endif 442 443 444 /* Peer address tracking */ 445 446 /* 447 * States for peer addresses 448 * 449 * SCTP_FADDRS_UNCONFIRMED: we have not communicated with this peer address 450 * before, mark it as unconfirmed so that we will not send data to it. 451 * All addresses initially are in unconfirmed state and required 452 * validation. SCTP sends a heartbeat to each of them and when it gets 453 * back a heartbeat ACK, the address will be marked as alive. This 454 * validation fixes a security issue with multihoming. If an attacker 455 * establishes an association with us and tells us that it has addresses 456 * belonging to another host A, this will prevent A from communicating 457 * with us. This is fixed by peer address validation. In the above case, 458 * A will respond with an abort. 459 * 460 * SCTP_FADDRS_ALIVE: this peer address is alive and we can communicate with 461 * it with no problem. 462 * 463 * SCTP_FADDRS_DOWN: we have exceeded the retransmission limit to this 464 * peer address. Once an address is marked down, we will only send 465 * a heartbeat to it every hb_interval in case it becomes alive now. 466 * 467 * SCTP_FADDRS_UNREACH: there is no suitable source address to send to 468 * this peer address. For example, the peer address is v6 but we only 469 * have v4 addresses. It is marked unreachable until there is an 470 * address configuration change. At that time, mark these addresses 471 * as unconfirmed and try again to see if those unreachable addresses 472 * are OK as we may have more source addresses. 473 */ 474 typedef enum { 475 SCTP_FADDRS_UNREACH, 476 SCTP_FADDRS_DOWN, 477 SCTP_FADDRS_ALIVE, 478 SCTP_FADDRS_UNCONFIRMED 479 } faddr_state_t; 480 481 typedef struct sctp_faddr_s { 482 struct sctp_faddr_s *next; 483 faddr_state_t state; 484 485 in6_addr_t faddr; 486 in6_addr_t saddr; 487 488 int64_t hb_expiry; /* time to retransmit heartbeat */ 489 uint32_t hb_interval; /* the heartbeat interval */ 490 491 int rto; /* RTO in tick */ 492 int srtt; /* Smoothed RTT in tick */ 493 int rttvar; /* RTT variance in tick */ 494 uint32_t rtt_updates; 495 int strikes; 496 int max_retr; 497 uint32_t sfa_pmss; 498 uint32_t cwnd; 499 uint32_t ssthresh; 500 uint32_t suna; /* sent - unack'ed */ 501 uint32_t pba; /* partial bytes acked */ 502 uint32_t acked; 503 int64_t lastactive; 504 mblk_t *timer_mp; /* retransmission timer control */ 505 uint32_t 506 hb_pending : 1, 507 timer_running : 1, 508 df : 1, 509 pmtu_discovered : 1, 510 511 rc_timer_running : 1, 512 isv4 : 1, 513 hb_enabled : 1; 514 515 mblk_t *rc_timer_mp; /* reliable control chunk timer */ 516 ire_t *ire; /* cached IRE */ 517 uint32_t T3expire; /* # of times T3 timer expired */ 518 519 uint64_t hb_secret; /* per addr "secret" in heartbeat */ 520 uint32_t rxt_unacked; /* # unack'ed retransmitted bytes */ 521 } sctp_faddr_t; 522 523 /* Flags to indicate supported address type in the PARM_SUP_ADDRS. */ 524 #define PARM_SUPP_V6 0x1 525 #define PARM_SUPP_V4 0x2 526 527 /* 528 * Set heartbeat interval plus jitter. The jitter is supposed to be random, 529 * up to +/- 50% of the RTO. We use gethrtime() here for performance reason 530 * as the jitter does not really need to be "very" random. 531 */ 532 #define SET_HB_INTVL(fp) \ 533 ((fp)->hb_interval + (fp)->rto + ((fp)->rto >> 1) - \ 534 (uint_t)gethrtime() % (fp)->rto) 535 536 #define SCTP_IPIF_HASH 16 537 538 typedef struct sctp_ipif_hash_s { 539 list_t sctp_ipif_list; 540 int ipif_count; 541 } sctp_ipif_hash_t; 542 543 544 /* 545 * Initialize cwnd according to RFC 3390. def_max_init_cwnd is 546 * either sctp_slow_start_initial or sctp_slow_start_after idle 547 * depending on the caller. 548 */ 549 #define SET_CWND(fp, mss, def_max_init_cwnd) \ 550 { \ 551 (fp)->cwnd = MIN(def_max_init_cwnd * (mss), \ 552 MIN(4 * (mss), MAX(2 * (mss), 4380 / (mss) * (mss)))); \ 553 } 554 555 556 struct sctp_s; 557 558 /* 559 * Control structure for each open SCTP stream, 560 * defined only within the kernel or for a kmem user. 561 * NOTE: sctp_reinit_values MUST have a line for each field in this structure! 562 */ 563 #if (defined(_KERNEL) || defined(_KMEMUSER)) 564 565 typedef struct sctp_s { 566 567 /* 568 * The following is shared with (and duplicated) in IP, so if you 569 * make changes, make sure you also change things in ip_sctp.c. 570 */ 571 struct sctp_s *sctp_conn_hash_next; 572 struct sctp_s *sctp_conn_hash_prev; 573 574 struct sctp_s *sctp_listen_hash_next; 575 struct sctp_s *sctp_listen_hash_prev; 576 577 sctp_tf_t *sctp_listen_tfp; /* Ptr to tf */ 578 sctp_tf_t *sctp_conn_tfp; /* Ptr to tf */ 579 580 /* Global list of sctp */ 581 list_node_t sctp_list; 582 583 sctp_faddr_t *sctp_faddrs; 584 int sctp_nfaddrs; 585 sctp_ipif_hash_t sctp_saddrs[SCTP_IPIF_HASH]; 586 int sctp_nsaddrs; 587 588 /* 589 * These fields contain the same information as sctp_sctph->th_*port. 590 * However, the lookup functions can not use the header fields 591 * since during IP option manipulation the sctp_sctph pointer 592 * changes. 593 */ 594 union { 595 struct { 596 in_port_t sctpu_fport; /* Remote port */ 597 in_port_t sctpu_lport; /* Local port */ 598 } sctpu_ports1; 599 uint32_t sctpu_ports2; /* Rem port, */ 600 /* local port */ 601 /* Used for SCTP_MATCH performance */ 602 } sctp_sctpu; 603 #define sctp_fport sctp_sctpu.sctpu_ports1.sctpu_fport 604 #define sctp_lport sctp_sctpu.sctpu_ports1.sctpu_lport 605 #define sctp_ports sctp_sctpu.sctpu_ports2 606 607 kmutex_t sctp_lock; 608 kcondvar_t sctp_cv; 609 boolean_t sctp_running; 610 611 #define sctp_ulpd sctp_connp->conn_upper_handle 612 #define sctp_upcalls sctp_connp->conn_upcalls 613 614 #define sctp_ulp_newconn sctp_upcalls->su_newconn 615 #define sctp_ulp_connected sctp_upcalls->su_connected 616 #define sctp_ulp_disconnected sctp_upcalls->su_disconnected 617 #define sctp_ulp_opctl sctp_upcalls->su_opctl 618 #define sctp_ulp_recv sctp_upcalls->su_recv 619 #define sctp_ulp_xmitted sctp_upcalls->su_txq_full 620 #define sctp_ulp_prop sctp_upcalls->su_set_proto_props 621 622 int32_t sctp_state; 623 624 conn_t *sctp_connp; /* conn_t stuff */ 625 #define sctp_zoneid sctp_connp->conn_zoneid 626 #define sctp_allzones sctp_connp->conn_allzones 627 #define sctp_mac_exempt sctp_connp->conn_mac_exempt 628 #define sctp_credp sctp_connp->conn_cred 629 #define sctp_reuseaddr sctp_connp->conn_reuseaddr 630 631 sctp_stack_t *sctp_sctps; 632 633 /* Peer address tracking */ 634 sctp_faddr_t *sctp_lastfaddr; /* last faddr in list */ 635 sctp_faddr_t *sctp_primary; /* primary faddr */ 636 sctp_faddr_t *sctp_current; /* current faddr */ 637 sctp_faddr_t *sctp_lastdata; /* last data seen from this */ 638 639 /* Outbound data tracking */ 640 mblk_t *sctp_xmit_head; 641 mblk_t *sctp_xmit_tail; 642 mblk_t *sctp_xmit_unsent; 643 mblk_t *sctp_xmit_unsent_tail; 644 mblk_t *sctp_xmit_unacked; 645 646 int32_t sctp_unacked; /* # of unacked bytes */ 647 int32_t sctp_unsent; /* # of unsent bytes in hand */ 648 649 uint32_t sctp_ltsn; /* Local instance TSN */ 650 uint32_t sctp_lastack_rxd; /* Last rx'd cumtsn */ 651 uint32_t sctp_recovery_tsn; /* Exit from fast recovery */ 652 uint32_t sctp_adv_pap; /* Adv. Peer Ack Point */ 653 654 uint16_t sctp_num_ostr; 655 uint16_t *sctp_ostrcntrs; 656 657 mblk_t *sctp_pad_mp; /* pad unaligned data chunks */ 658 659 /* sendmsg() default parameters */ 660 uint16_t sctp_def_stream; /* default stream id */ 661 uint16_t sctp_def_flags; /* default xmit flags */ 662 uint32_t sctp_def_ppid; /* default payload id */ 663 uint32_t sctp_def_context; /* default context */ 664 uint32_t sctp_def_timetolive; /* default msg TTL */ 665 666 /* Inbound data tracking */ 667 sctp_set_t *sctp_sack_info; /* Sack tracking */ 668 mblk_t *sctp_ack_mp; /* Delayed ACK timer block */ 669 sctp_instr_t *sctp_instr; /* Instream trackers */ 670 mblk_t *sctp_uo_frags; /* Un-ordered msg. fragments */ 671 uint32_t sctp_ftsn; /* Peer's TSN */ 672 uint32_t sctp_lastacked; /* last cumtsn SACKd */ 673 uint16_t sctp_num_istr; /* No. of instreams */ 674 int32_t sctp_istr_nmsgs; /* No. of chunks in instreams */ 675 int32_t sctp_sack_gaps; /* No. of received gaps */ 676 int32_t sctp_sack_toggle; /* SACK every other pkt */ 677 678 /* RTT calculation */ 679 uint32_t sctp_rtt_tsn; 680 int64_t sctp_out_time; 681 682 /* Stats */ 683 uint64_t sctp_opkts; /* sent pkts */ 684 uint64_t sctp_obchunks; /* sent control chunks */ 685 uint64_t sctp_odchunks; /* sent ordered data chunks */ 686 uint64_t sctp_oudchunks; /* sent unord data chunks */ 687 uint64_t sctp_rxtchunks; /* retransmitted chunks */ 688 uint64_t sctp_ipkts; /* recv pkts */ 689 uint64_t sctp_ibchunks; /* recv control chunks */ 690 uint64_t sctp_idchunks; /* recv ordered data chunks */ 691 uint64_t sctp_iudchunks; /* recv unord data chunks */ 692 uint64_t sctp_fragdmsgs; 693 uint64_t sctp_reassmsgs; 694 uint32_t sctp_T1expire; /* # of times T1timer expired */ 695 uint32_t sctp_T2expire; /* # of times T2timer expired */ 696 uint32_t sctp_T3expire; /* # of times T3timer expired */ 697 uint32_t sctp_assoc_start_time; /* time when assoc was est. */ 698 699 /* Outbound flow control */ 700 int32_t sctp_xmit_hiwater; /* Send high water mark */ 701 int32_t sctp_xmit_lowater; /* Send low water mark */ 702 uint32_t sctp_frwnd; /* Peer RWND */ 703 uint32_t sctp_cwnd_max; 704 705 /* Inbound flow control */ 706 int32_t sctp_rwnd; /* Current receive window */ 707 int32_t sctp_irwnd; /* Initial receive window */ 708 int32_t sctp_rxqueued; /* No. of bytes in RX q's */ 709 710 /* Pre-initialized composite headers */ 711 char *sctp_iphc; /* v4 sctp/ip hdr template buffer */ 712 char *sctp_iphc6; /* v6 sctp/ip hdr template buffer */ 713 714 int32_t sctp_iphc_len; /* actual allocated v4 buffer size */ 715 int32_t sctp_iphc6_len; /* actual allocated v6 buffer size */ 716 717 int32_t sctp_hdr_len; /* len of combined SCTP/IP v4 hdr */ 718 int32_t sctp_hdr6_len; /* len of combined SCTP/IP v6 hdr */ 719 720 ipha_t *sctp_ipha; /* IPv4 header in the buffer */ 721 ip6_t *sctp_ip6h; /* IPv6 header in the buffer */ 722 723 int32_t sctp_ip_hdr_len; /* Byte len of our current v4 hdr */ 724 int32_t sctp_ip_hdr6_len; /* Byte len of our current v6 hdr */ 725 726 sctp_hdr_t *sctp_sctph; /* sctp header in combined v4 hdr */ 727 sctp_hdr_t *sctp_sctph6; /* sctp header in combined v6 hdr */ 728 729 uint32_t sctp_lvtag; /* local SCTP instance verf tag */ 730 uint32_t sctp_fvtag; /* Peer's SCTP verf tag */ 731 732 /* Path MTU Discovery */ 733 int64_t sctp_last_mtu_probe; 734 clock_t sctp_mtu_probe_intvl; 735 uint32_t sctp_mss; /* Max send size (not TCP MSS!) */ 736 737 /* structs sctp_bits, sctp_events are for clearing all bits at once */ 738 struct { 739 uint32_t 740 741 sctp_understands_asconf : 1, /* Peer handles ASCONF chunks */ 742 sctp_debug : 1, /* SO_DEBUG "socket" option. */ 743 sctp_cchunk_pend : 1, /* Control chunk in flight. */ 744 sctp_dgram_errind : 1, /* SO_DGRAM_ERRIND option */ 745 746 sctp_linger : 1, /* SO_LINGER turned on */ 747 sctp_lingering : 1, /* Lingering in close */ 748 sctp_loopback: 1, /* src and dst are the same machine */ 749 sctp_force_sack : 1, 750 751 sctp_ack_timer_running: 1, /* Delayed ACK timer running */ 752 sctp_recvdstaddr : 1, /* return T_EXTCONN_IND with dstaddr */ 753 sctp_hwcksum : 1, /* The NIC is capable of hwcksum */ 754 sctp_understands_addip : 1, 755 756 sctp_bound_to_all : 1, 757 sctp_cansleep : 1, /* itf routines can sleep */ 758 sctp_detached : 1, /* If we're detached from a stream */ 759 sctp_send_adaptation : 1, /* send adaptation layer ind */ 760 761 sctp_recv_adaptation : 1, /* recv adaptation layer ind */ 762 sctp_ndelay : 1, /* turn off Nagle */ 763 sctp_condemned : 1, /* this sctp is about to disappear */ 764 sctp_chk_fast_rexmit : 1, /* check for fast rexmit message */ 765 766 sctp_prsctp_aware : 1, /* is peer PR-SCTP aware? */ 767 sctp_linklocal : 1, /* is linklocal assoc. */ 768 sctp_rexmitting : 1, /* SCTP is retransmitting */ 769 sctp_zero_win_probe : 1, /* doing zero win probe */ 770 771 sctp_txq_full : 1, /* the tx queue is full */ 772 sctp_ulp_discon_done : 1, /* ulp_disconnecting done */ 773 sctp_dummy : 6; 774 } sctp_bits; 775 struct { 776 uint32_t 777 778 sctp_recvsndrcvinfo : 1, 779 sctp_recvassocevnt : 1, 780 sctp_recvpathevnt : 1, 781 sctp_recvsendfailevnt : 1, 782 783 sctp_recvpeererr : 1, 784 sctp_recvshutdownevnt : 1, 785 sctp_recvpdevnt : 1, 786 sctp_recvalevnt : 1; 787 } sctp_events; 788 #define sctp_priv_stream sctp_bits.sctp_priv_stream 789 #define sctp_understands_asconf sctp_bits.sctp_understands_asconf 790 #define sctp_debug sctp_bits.sctp_debug 791 #define sctp_cchunk_pend sctp_bits.sctp_cchunk_pend 792 #define sctp_dgram_errind sctp_bits.sctp_dgram_errind 793 #define sctp_linger sctp_bits.sctp_linger 794 #define sctp_lingering sctp_bits.sctp_lingering 795 #define sctp_loopback sctp_bits.sctp_loopback 796 #define sctp_force_sack sctp_bits.sctp_force_sack 797 #define sctp_ack_timer_running sctp_bits.sctp_ack_timer_running 798 #define sctp_recvdstaddr sctp_bits.sctp_recvdstaddr 799 #define sctp_hwcksum sctp_bits.sctp_hwcksum 800 #define sctp_understands_addip sctp_bits.sctp_understands_addip 801 #define sctp_bound_to_all sctp_bits.sctp_bound_to_all 802 #define sctp_cansleep sctp_bits.sctp_cansleep 803 #define sctp_detached sctp_bits.sctp_detached 804 #define sctp_send_adaptation sctp_bits.sctp_send_adaptation 805 #define sctp_recv_adaptation sctp_bits.sctp_recv_adaptation 806 #define sctp_ndelay sctp_bits.sctp_ndelay 807 #define sctp_condemned sctp_bits.sctp_condemned 808 #define sctp_chk_fast_rexmit sctp_bits.sctp_chk_fast_rexmit 809 #define sctp_prsctp_aware sctp_bits.sctp_prsctp_aware 810 #define sctp_linklocal sctp_bits.sctp_linklocal 811 #define sctp_rexmitting sctp_bits.sctp_rexmitting 812 #define sctp_zero_win_probe sctp_bits.sctp_zero_win_probe 813 #define sctp_txq_full sctp_bits.sctp_txq_full 814 #define sctp_ulp_discon_done sctp_bits.sctp_ulp_discon_done 815 816 #define sctp_recvsndrcvinfo sctp_events.sctp_recvsndrcvinfo 817 #define sctp_recvassocevnt sctp_events.sctp_recvassocevnt 818 #define sctp_recvpathevnt sctp_events.sctp_recvpathevnt 819 #define sctp_recvsendfailevnt sctp_events.sctp_recvsendfailevnt 820 #define sctp_recvpeererr sctp_events.sctp_recvpeererr 821 #define sctp_recvshutdownevnt sctp_events.sctp_recvshutdownevnt 822 #define sctp_recvpdevnt sctp_events.sctp_recvpdevnt 823 #define sctp_recvalevnt sctp_events.sctp_recvalevnt 824 825 /* Retransmit info */ 826 mblk_t *sctp_cookie_mp; /* cookie chunk, if rxt needed */ 827 int32_t sctp_strikes; /* Total number of assoc strikes */ 828 int32_t sctp_max_init_rxt; 829 int32_t sctp_pa_max_rxt; /* Max per-assoc retransmit cnt */ 830 int32_t sctp_pp_max_rxt; /* Max per-path retransmit cnt */ 831 uint32_t sctp_rto_max; 832 uint32_t sctp_init_rto_max; 833 uint32_t sctp_rto_min; 834 uint32_t sctp_rto_initial; 835 836 int64_t sctp_last_secret_update; 837 uint8_t sctp_secret[SCTP_SECRET_LEN]; /* for cookie auth */ 838 uint8_t sctp_old_secret[SCTP_SECRET_LEN]; 839 uint32_t sctp_cookie_lifetime; /* cookie lifetime in tick */ 840 841 /* 842 * Address family that app wishes returned addrsses to be in. 843 * Currently taken from address family used in T_BIND_REQ, but 844 * should really come from family used in original socket() call. 845 * Value can be AF_INET or AF_INET6. 846 */ 847 uint_t sctp_family; 848 ushort_t sctp_ipversion; 849 850 /* Bind hash tables */ 851 kmutex_t *sctp_bind_lockp; /* Ptr to tf_lock */ 852 struct sctp_s *sctp_bind_hash; 853 struct sctp_s **sctp_ptpbhn; 854 855 /* Shutdown / cleanup */ 856 sctp_faddr_t *sctp_shutdown_faddr; /* rotate faddr during shutd */ 857 int32_t sctp_client_errno; /* How the client screwed up */ 858 int sctp_lingertime; /* Close linger time (in seconds) */ 859 kmutex_t sctp_reflock; /* Protects sctp_refcnt & timer mp */ 860 ushort_t sctp_refcnt; /* No. of pending upstream msg */ 861 mblk_t *sctp_timer_mp; /* List of fired timers. */ 862 863 /* Misc */ 864 uint_t sctp_bound_if; /* IPV6_BOUND_IF */ 865 866 mblk_t *sctp_heartbeat_mp; /* Timer block for heartbeats */ 867 uint32_t sctp_hb_interval; /* Default hb_interval */ 868 869 int32_t sctp_autoclose; /* Auto disconnect in ticks */ 870 int64_t sctp_active; /* Last time data/sack on this conn */ 871 uint32_t sctp_tx_adaptation_code; /* TX adaptation code */ 872 uint32_t sctp_rx_adaptation_code; /* RX adaptation code */ 873 874 /* Reliable control chunks */ 875 mblk_t *sctp_cxmit_list; /* Xmit list for control chunks */ 876 uint32_t sctp_lcsn; /* Our serial number */ 877 uint32_t sctp_fcsn; /* Peer serial number */ 878 879 /* Per association receive queue */ 880 kmutex_t sctp_recvq_lock; 881 mblk_t *sctp_recvq; 882 mblk_t *sctp_recvq_tail; 883 taskq_t *sctp_recvq_tq; 884 885 /* Send queue to IP */ 886 kmutex_t sctp_sendq_lock; 887 mblk_t *sctp_sendq; 888 mblk_t *sctp_sendq_tail; 889 boolean_t sctp_sendq_sending; 890 891 /* IPv6 ancillary data */ 892 uint_t sctp_ipv6_recvancillary; /* flags */ 893 #define SCTP_IPV6_RECVPKTINFO 0x01 /* IPV6_RECVPKTINFO opt */ 894 #define SCTP_IPV6_RECVHOPLIMIT 0x02 /* IPV6_RECVHOPLIMIT opt */ 895 #define SCTP_IPV6_RECVHOPOPTS 0x04 /* IPV6_RECVHOPOPTS opt */ 896 #define SCTP_IPV6_RECVDSTOPTS 0x08 /* IPV6_RECVDSTOPTS opt */ 897 #define SCTP_IPV6_RECVRTHDR 0x10 /* IPV6_RECVRTHDR opt */ 898 #define SCTP_IPV6_RECVRTDSTOPTS 0x20 /* IPV6_RECVRTHDRDSTOPTS opt */ 899 900 uint_t sctp_recvifindex; /* last rcvd IPV6_RCVPKTINFO */ 901 uint_t sctp_recvhops; /* " IPV6_RECVHOPLIMIT */ 902 ip6_hbh_t *sctp_hopopts; /* " IPV6_RECVHOPOPTS */ 903 ip6_dest_t *sctp_dstopts; /* " IPV6_RECVDSTOPTS */ 904 ip6_dest_t *sctp_rtdstopts; /* " IPV6_RECVRTHDRDSTOPTS */ 905 ip6_rthdr_t *sctp_rthdr; /* " IPV6_RECVRTHDR */ 906 uint_t sctp_hopoptslen; 907 uint_t sctp_dstoptslen; 908 uint_t sctp_rtdstoptslen; 909 uint_t sctp_rthdrlen; 910 911 ip6_pkt_t sctp_sticky_ipp; /* Sticky options */ 912 #define sctp_ipp_fields sctp_sticky_ipp.ipp_fields 913 #define sctp_ipp_ifindex sctp_sticky_ipp.ipp_ifindex 914 #define sctp_ipp_addr sctp_sticky_ipp.ipp_addr 915 #define sctp_ipp_hoplimit sctp_sticky_ipp.ipp_hoplimit 916 #define sctp_ipp_hopoptslen sctp_sticky_ipp.ipp_hopoptslen 917 #define sctp_ipp_rtdstoptslen sctp_sticky_ipp.ipp_rtdstoptslen 918 #define sctp_ipp_rthdrlen sctp_sticky_ipp.ipp_rthdrlen 919 #define sctp_ipp_dstoptslen sctp_sticky_ipp.ipp_dstoptslen 920 #define sctp_ipp_hopopts sctp_sticky_ipp.ipp_hopopts 921 #define sctp_ipp_rtdstopts sctp_sticky_ipp.ipp_rtdstopts 922 #define sctp_ipp_rthdr sctp_sticky_ipp.ipp_rthdr 923 #define sctp_ipp_dstopts sctp_sticky_ipp.ipp_dstopts 924 #define sctp_ipp_pathmtu sctp_sticky_ipp.ipp_pathmtu 925 #define sctp_ipp_nexthop sctp_sticky_ipp.ipp_nexthop 926 /* Stats */ 927 uint64_t sctp_msgcount; 928 uint64_t sctp_prsctpdrop; 929 930 uint_t sctp_v4label_len; /* length of cached v4 label */ 931 uint_t sctp_v6label_len; /* length of cached v6 label */ 932 uint32_t sctp_rxt_nxttsn; /* Next TSN to be rexmitted */ 933 uint32_t sctp_rxt_maxtsn; /* Max TSN sent at time out */ 934 935 int sctp_pd_point; /* Partial delivery point */ 936 mblk_t *sctp_err_chunks; /* Error chunks */ 937 uint32_t sctp_err_len; /* Total error chunks length */ 938 939 pid_t sctp_cpid; /* Process id when this was opened */ 940 uint64_t sctp_open_time; /* time when this was opened */ 941 } sctp_t; 942 943 #define SCTP_TXQ_LEN(sctp) ((sctp)->sctp_unsent + (sctp)->sctp_unacked) 944 #define SCTP_TXQ_UPDATE(sctp) \ 945 if ((sctp)->sctp_txq_full && SCTP_TXQ_LEN(sctp) <= \ 946 (sctp)->sctp_xmit_lowater) { \ 947 (sctp)->sctp_txq_full = 0; \ 948 (sctp)->sctp_ulp_xmitted((sctp)->sctp_ulpd, \ 949 B_FALSE); \ 950 } 951 952 #endif /* (defined(_KERNEL) || defined(_KMEMUSER)) */ 953 954 extern void sctp_ack_timer(sctp_t *); 955 extern size_t sctp_adaptation_code_param(sctp_t *, uchar_t *); 956 extern void sctp_adaptation_event(sctp_t *); 957 extern void sctp_add_err(sctp_t *, uint16_t, void *, size_t, 958 sctp_faddr_t *); 959 extern int sctp_add_faddr(sctp_t *, in6_addr_t *, int, boolean_t); 960 extern boolean_t sctp_add_ftsn_set(sctp_ftsn_set_t **, sctp_faddr_t *, mblk_t *, 961 uint_t *, uint32_t *); 962 extern boolean_t sctp_add_recvq(sctp_t *, mblk_t *, boolean_t); 963 extern void sctp_add_sendq(sctp_t *, mblk_t *); 964 extern void sctp_add_unrec_parm(sctp_parm_hdr_t *, mblk_t **, boolean_t); 965 extern size_t sctp_addr_params(sctp_t *, int, uchar_t *, boolean_t); 966 extern mblk_t *sctp_add_proto_hdr(sctp_t *, sctp_faddr_t *, mblk_t *, int, 967 int *); 968 extern void sctp_addr_req(sctp_t *, mblk_t *); 969 extern sctp_t *sctp_addrlist2sctp(mblk_t *, sctp_hdr_t *, sctp_chunk_hdr_t *, 970 zoneid_t, sctp_stack_t *); 971 extern void sctp_add_hdr(sctp_t *, uchar_t *, size_t); 972 extern void sctp_check_adv_ack_pt(sctp_t *, mblk_t *, mblk_t *); 973 extern void sctp_assoc_event(sctp_t *, uint16_t, uint16_t, 974 sctp_chunk_hdr_t *); 975 976 extern void sctp_bind_hash_insert(sctp_tf_t *, sctp_t *, int); 977 extern void sctp_bind_hash_remove(sctp_t *); 978 extern int sctp_bindi(sctp_t *, in_port_t, boolean_t, int, in_port_t *); 979 extern int sctp_bind_add(sctp_t *, const void *, uint32_t, boolean_t, 980 in_port_t); 981 extern int sctp_bind_del(sctp_t *, const void *, uint32_t, boolean_t); 982 extern int sctp_build_hdrs(sctp_t *); 983 984 extern int sctp_check_abandoned_msg(sctp_t *, mblk_t *); 985 extern void sctp_clean_death(sctp_t *, int); 986 extern void sctp_close_eager(sctp_t *); 987 extern int sctp_compare_faddrsets(sctp_faddr_t *, sctp_faddr_t *); 988 extern void sctp_congest_reset(sctp_t *); 989 extern void sctp_conn_hash_insert(sctp_tf_t *, sctp_t *, int); 990 extern void sctp_conn_hash_remove(sctp_t *); 991 extern void sctp_conn_init(conn_t *); 992 extern sctp_t *sctp_conn_match(in6_addr_t *, in6_addr_t *, uint32_t, 993 zoneid_t, sctp_stack_t *); 994 extern sctp_t *sctp_conn_request(sctp_t *, mblk_t *, uint_t, uint_t, 995 sctp_init_chunk_t *, mblk_t *); 996 extern int sctp_conprim_opt_process(queue_t *, mblk_t *, int *, int *, 997 int *); 998 extern uint32_t sctp_cumack(sctp_t *, uint32_t, mblk_t **); 999 extern sctp_t *sctp_create_eager(sctp_t *); 1000 1001 extern void sctp_dispatch_rput(queue_t *, sctp_t *, sctp_hdr_t *, mblk_t *, 1002 uint_t, uint_t, in6_addr_t); 1003 extern char *sctp_display(sctp_t *, char *); 1004 extern void sctp_display_all(sctp_stack_t *); 1005 1006 extern void sctp_error_event(sctp_t *, sctp_chunk_hdr_t *); 1007 1008 extern void sctp_faddr_alive(sctp_t *, sctp_faddr_t *); 1009 extern int sctp_faddr_dead(sctp_t *, sctp_faddr_t *, int); 1010 extern void sctp_faddr_fini(void); 1011 extern void sctp_faddr_init(void); 1012 extern void sctp_fast_rexmit(sctp_t *); 1013 extern void sctp_fill_sack(sctp_t *, unsigned char *, int); 1014 extern void sctp_free_faddr_timers(sctp_t *); 1015 extern void sctp_free_ftsn_set(sctp_ftsn_set_t *); 1016 extern void sctp_free_msg(mblk_t *); 1017 extern void sctp_free_reass(sctp_instr_t *); 1018 extern void sctp_free_set(sctp_set_t *); 1019 extern void sctp_ftsn_sets_fini(void); 1020 extern void sctp_ftsn_sets_init(void); 1021 1022 extern int sctp_get_addrlist(sctp_t *, const void *, uint32_t *, 1023 uchar_t **, int *, size_t *); 1024 extern void sctp_g_q_inactive(sctp_stack_t *); 1025 extern int sctp_get_addrparams(sctp_t *, sctp_t *, mblk_t *, 1026 sctp_chunk_hdr_t *, uint_t *); 1027 extern void sctp_get_ire(sctp_t *, sctp_faddr_t *); 1028 extern void sctp_get_faddr_list(sctp_t *, uchar_t *, size_t); 1029 extern mblk_t *sctp_get_first_sent(sctp_t *); 1030 extern mblk_t *sctp_get_msg_to_send(sctp_t *, mblk_t **, mblk_t *, int *, 1031 int32_t, uint32_t, sctp_faddr_t *); 1032 extern void sctp_get_saddr_list(sctp_t *, uchar_t *, size_t); 1033 1034 extern int sctp_handle_error(sctp_t *, sctp_hdr_t *, sctp_chunk_hdr_t *, 1035 mblk_t *); 1036 extern void sctp_hash_destroy(sctp_stack_t *); 1037 extern void sctp_hash_init(sctp_stack_t *); 1038 extern int sctp_header_init_ipv4(sctp_t *, int); 1039 extern int sctp_header_init_ipv6(sctp_t *, int); 1040 extern void sctp_heartbeat_timer(sctp_t *); 1041 1042 extern void sctp_icmp_error(sctp_t *, mblk_t *); 1043 extern void sctp_inc_taskq(sctp_stack_t *); 1044 extern void sctp_info_req(sctp_t *, mblk_t *); 1045 extern mblk_t *sctp_init_mp(sctp_t *); 1046 extern boolean_t sctp_initialize_params(sctp_t *, sctp_init_chunk_t *, 1047 sctp_init_chunk_t *); 1048 extern uint32_t sctp_init2vtag(sctp_chunk_hdr_t *); 1049 extern void sctp_intf_event(sctp_t *, in6_addr_t, int, int); 1050 extern void sctp_input_data(sctp_t *, mblk_t *, mblk_t *); 1051 extern void sctp_instream_cleanup(sctp_t *, boolean_t); 1052 extern int sctp_is_a_faddr_clean(sctp_t *); 1053 1054 extern void *sctp_kstat_init(netstackid_t); 1055 extern void sctp_kstat_fini(netstackid_t, kstat_t *); 1056 extern void *sctp_kstat2_init(netstackid_t, sctp_kstat_t *); 1057 extern void sctp_kstat2_fini(netstackid_t, kstat_t *); 1058 1059 extern ssize_t sctp_link_abort(mblk_t *, uint16_t, char *, size_t, int, 1060 boolean_t); 1061 extern void sctp_listen_hash_insert(sctp_tf_t *, sctp_t *); 1062 extern void sctp_listen_hash_remove(sctp_t *); 1063 extern sctp_t *sctp_lookup(sctp_t *, in6_addr_t *, sctp_tf_t *, uint32_t *, 1064 int); 1065 extern sctp_faddr_t *sctp_lookup_faddr(sctp_t *, in6_addr_t *); 1066 1067 extern mblk_t *sctp_make_err(sctp_t *, uint16_t, void *, size_t); 1068 extern mblk_t *sctp_make_ftsn_chunk(sctp_t *, sctp_faddr_t *, 1069 sctp_ftsn_set_t *, uint_t, uint32_t); 1070 extern void sctp_make_ftsns(sctp_t *, mblk_t *, mblk_t *, mblk_t **, 1071 sctp_faddr_t *, uint32_t *); 1072 extern mblk_t *sctp_make_mp(sctp_t *, sctp_faddr_t *, int); 1073 extern mblk_t *sctp_make_sack(sctp_t *, sctp_faddr_t *, mblk_t *); 1074 extern void sctp_maxpsz_set(sctp_t *); 1075 extern void sctp_move_faddr_timers(queue_t *, sctp_t *); 1076 1077 extern void sctp_nd_free(sctp_stack_t *); 1078 extern int sctp_nd_getset(queue_t *, MBLKP); 1079 extern boolean_t sctp_nd_init(sctp_stack_t *); 1080 extern sctp_parm_hdr_t *sctp_next_parm(sctp_parm_hdr_t *, ssize_t *); 1081 1082 extern void sctp_ootb_shutdown_ack(sctp_t *, mblk_t *, uint_t); 1083 extern size_t sctp_options_param(const sctp_t *, void *, int); 1084 extern size_t sctp_options_param_len(const sctp_t *, int); 1085 extern void sctp_output(sctp_t *, uint_t); 1086 1087 extern boolean_t sctp_param_register(IDP *, sctpparam_t *, int, sctp_stack_t *); 1088 extern void sctp_partial_delivery_event(sctp_t *); 1089 extern int sctp_process_cookie(sctp_t *, sctp_chunk_hdr_t *, mblk_t *, 1090 sctp_init_chunk_t **, sctp_hdr_t *, int *, in6_addr_t *); 1091 extern void sctp_process_err(sctp_t *); 1092 extern void sctp_process_heartbeat(sctp_t *, sctp_chunk_hdr_t *); 1093 extern void sctp_process_sendq(sctp_t *); 1094 extern void sctp_process_timer(sctp_t *); 1095 1096 extern void sctp_redo_faddr_srcs(sctp_t *); 1097 extern void sctp_regift_xmitlist(sctp_t *); 1098 extern void sctp_return_heartbeat(sctp_t *, sctp_chunk_hdr_t *, mblk_t *); 1099 extern void sctp_rexmit(sctp_t *, sctp_faddr_t *); 1100 extern mblk_t *sctp_rexmit_packet(sctp_t *, mblk_t **, mblk_t **, 1101 sctp_faddr_t *, uint_t *); 1102 extern void sctp_rexmit_timer(sctp_t *, sctp_faddr_t *); 1103 extern sctp_faddr_t *sctp_rotate_faddr(sctp_t *, sctp_faddr_t *); 1104 1105 extern boolean_t sctp_sack(sctp_t *, mblk_t *); 1106 extern int sctp_secure_restart_check(mblk_t *, sctp_chunk_hdr_t *, 1107 uint32_t, int, sctp_stack_t *); 1108 extern void sctp_send_abort(sctp_t *, uint32_t, uint16_t, char *, size_t, 1109 mblk_t *, int, boolean_t); 1110 extern void sctp_send_cookie_ack(sctp_t *); 1111 extern void sctp_send_cookie_echo(sctp_t *, sctp_chunk_hdr_t *, mblk_t *); 1112 extern void sctp_send_initack(sctp_t *, sctp_hdr_t *, sctp_chunk_hdr_t *, 1113 mblk_t *); 1114 extern void sctp_send_shutdown(sctp_t *, int); 1115 extern void sctp_send_heartbeat(sctp_t *, sctp_faddr_t *); 1116 extern void sctp_sendfail_event(sctp_t *, mblk_t *, int, boolean_t); 1117 extern void sctp_set_faddr_current(sctp_t *, sctp_faddr_t *); 1118 extern int sctp_set_hdraddrs(sctp_t *); 1119 extern void sctp_set_saddr(sctp_t *, sctp_faddr_t *); 1120 extern void sctp_sets_init(void); 1121 extern void sctp_sets_fini(void); 1122 extern void sctp_shutdown_event(sctp_t *); 1123 extern void sctp_stop_faddr_timers(sctp_t *); 1124 extern int sctp_shutdown_received(sctp_t *, sctp_chunk_hdr_t *, boolean_t, 1125 boolean_t, sctp_faddr_t *); 1126 extern void sctp_shutdown_complete(sctp_t *); 1127 extern void sctp_set_if_mtu(sctp_t *); 1128 extern void sctp_set_iplen(sctp_t *, mblk_t *); 1129 extern void sctp_set_ulp_prop(sctp_t *); 1130 extern void sctp_ss_rexmit(sctp_t *); 1131 extern size_t sctp_supaddr_param_len(sctp_t *); 1132 extern size_t sctp_supaddr_param(sctp_t *, uchar_t *); 1133 1134 extern void sctp_timer(sctp_t *, mblk_t *, clock_t); 1135 extern mblk_t *sctp_timer_alloc(sctp_t *, pfv_t, int); 1136 extern void sctp_timer_call(sctp_t *sctp, mblk_t *); 1137 extern void sctp_timer_free(mblk_t *); 1138 extern void sctp_timer_stop(mblk_t *); 1139 extern void sctp_unlink_faddr(sctp_t *, sctp_faddr_t *); 1140 1141 extern void sctp_update_ire(sctp_t *sctp); 1142 extern in_port_t sctp_update_next_port(in_port_t, zone_t *zone, sctp_stack_t *); 1143 extern void sctp_update_rtt(sctp_t *, sctp_faddr_t *, clock_t); 1144 extern void sctp_user_abort(sctp_t *, mblk_t *); 1145 1146 extern void sctp_validate_peer(sctp_t *); 1147 1148 extern void sctp_wput_ioctl(queue_t *, mblk_t *); 1149 1150 extern int sctp_xmit_list_clean(sctp_t *, ssize_t); 1151 1152 extern void sctp_zap_addrs(sctp_t *); 1153 extern void sctp_zap_faddrs(sctp_t *, int); 1154 1155 /* Contract private interface between SCTP and Clustering - PSARC/2005/602 */ 1156 1157 extern void (*cl_sctp_listen)(sa_family_t, uchar_t *, uint_t, in_port_t); 1158 extern void (*cl_sctp_unlisten)(sa_family_t, uchar_t *, uint_t, in_port_t); 1159 extern void (*cl_sctp_connect)(sa_family_t, uchar_t *, uint_t, in_port_t, 1160 uchar_t *, uint_t, in_port_t, boolean_t, cl_sctp_handle_t); 1161 extern void (*cl_sctp_disconnect)(sa_family_t, cl_sctp_handle_t); 1162 extern void (*cl_sctp_assoc_change)(sa_family_t, uchar_t *, size_t, uint_t, 1163 uchar_t *, size_t, uint_t, int, cl_sctp_handle_t); 1164 extern void (*cl_sctp_check_addrs)(sa_family_t, in_port_t, uchar_t **, 1165 size_t, uint_t *, boolean_t); 1166 1167 /* Send a mp to IP. */ 1168 #define IP_PUT(mp, conn, isv4) \ 1169 { \ 1170 sctp_stack_t *sctps = conn->conn_netstack->netstack_sctp; \ 1171 \ 1172 if ((isv4)) \ 1173 ip_output((conn), (mp), WR(sctps->sctps_g_q), IP_WPUT); \ 1174 else \ 1175 ip_output_v6((conn), (mp), WR(sctps->sctps_g_q), IP_WPUT);\ 1176 } 1177 1178 #define RUN_SCTP(sctp) \ 1179 { \ 1180 mutex_enter(&(sctp)->sctp_lock); \ 1181 while ((sctp)->sctp_running) \ 1182 cv_wait(&(sctp)->sctp_cv, &(sctp)->sctp_lock); \ 1183 (sctp)->sctp_running = B_TRUE; \ 1184 mutex_exit(&(sctp)->sctp_lock); \ 1185 } 1186 1187 /* Wake up recvq taskq */ 1188 #define WAKE_SCTP(sctp) \ 1189 { \ 1190 mutex_enter(&(sctp)->sctp_lock); \ 1191 if ((sctp)->sctp_timer_mp != NULL) \ 1192 sctp_process_timer(sctp); \ 1193 (sctp)->sctp_running = B_FALSE; \ 1194 cv_broadcast(&(sctp)->sctp_cv); \ 1195 mutex_exit(&(sctp)->sctp_lock); \ 1196 } 1197 1198 #ifdef __cplusplus 1199 } 1200 #endif 1201 1202 #endif /* _INET_SCTP_SCTP_IMPL_H */ 1203