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 2007 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _INET_SCTP_SCTP_IMPL_H 28 #define _INET_SCTP_SCTP_IMPL_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <sys/inttypes.h> 33 #include <sys/taskq.h> 34 #include <sys/list.h> 35 #include <sys/strsun.h> 36 #include <sys/zone.h> 37 #include <netinet/ip6.h> 38 #include <inet/optcom.h> 39 #include <netinet/sctp.h> 40 #include <inet/sctp_itf.h> 41 #include "sctp_stack.h" 42 43 #ifdef __cplusplus 44 extern "C" { 45 #endif 46 47 /* Streams device identifying info and version */ 48 #define SCTP_DEV_IDINFO "SCTP Streams device 1.0" 49 50 #define SSN_GT(a, b) ((int16_t)((a)-(b)) > 0) 51 #define SSN_GE(a, b) ((int16_t)((a)-(b)) >= 0) 52 53 /* Default buffer size and flow control wake up threshold. */ 54 #define SCTP_XMIT_LOWATER 8192 55 #define SCTP_XMIT_HIWATER 102400 56 #define SCTP_RECV_LOWATER 8192 57 #define SCTP_RECV_HIWATER 102400 58 59 /* SCTP Timer control structure */ 60 typedef struct sctpt_s { 61 pfv_t sctpt_pfv; /* The routine we are to call */ 62 struct sctp_s *sctpt_sctp; /* The parameter we are to pass in */ 63 struct sctp_faddr_s *sctpt_faddr; 64 } sctpt_t; 65 66 /* 67 * Maximum number of duplicate TSNs we can report. This is currently 68 * static, and governs the size of the mblk used to hold the duplicate 69 * reports. The use of duplcate TSN reports is currently experimental, 70 * so for now a static limit should suffice. 71 */ 72 #define SCTP_DUP_MBLK_SZ 64 73 74 #define SCTP_IS_ADDR_UNSPEC(isv4, addr) \ 75 ((isv4) ? IN6_IS_ADDR_V4MAPPED_ANY(&(addr)) : \ 76 IN6_IS_ADDR_UNSPECIFIED(&(addr))) 77 78 /* 79 * SCTP parameters 80 */ 81 /* Named Dispatch Parameter Management Structure */ 82 typedef struct sctpparam_s { 83 uint32_t sctp_param_min; 84 uint32_t sctp_param_max; 85 uint32_t sctp_param_val; 86 char *sctp_param_name; 87 } sctpparam_t; 88 89 #define sctps_max_init_retr sctps_params[0].sctp_param_val 90 #define sctps_max_init_retr_high sctps_params[0].sctp_param_max 91 #define sctps_max_init_retr_low sctps_params[0].sctp_param_min 92 #define sctps_pa_max_retr sctps_params[1].sctp_param_val 93 #define sctps_pa_max_retr_high sctps_params[1].sctp_param_max 94 #define sctps_pa_max_retr_low sctps_params[1].sctp_param_min 95 #define sctps_pp_max_retr sctps_params[2].sctp_param_val 96 #define sctps_pp_max_retr_high sctps_params[2].sctp_param_max 97 #define sctps_pp_max_retr_low sctps_params[2].sctp_param_min 98 #define sctps_cwnd_max_ sctps_params[3].sctp_param_val 99 #define __sctps_not_used1 sctps_params[4].sctp_param_val 100 #define sctps_smallest_nonpriv_port sctps_params[5].sctp_param_val 101 #define sctps_ipv4_ttl sctps_params[6].sctp_param_val 102 #define sctps_heartbeat_interval sctps_params[7].sctp_param_val 103 #define sctps_heartbeat_interval_high sctps_params[7].sctp_param_max 104 #define sctps_heartbeat_interval_low sctps_params[7].sctp_param_min 105 #define sctps_initial_mtu sctps_params[8].sctp_param_val 106 #define sctps_mtu_probe_interval sctps_params[9].sctp_param_val 107 #define sctps_new_secret_interval sctps_params[10].sctp_param_val 108 #define sctps_deferred_ack_interval sctps_params[11].sctp_param_val 109 #define sctps_snd_lowat_fraction sctps_params[12].sctp_param_val 110 #define sctps_ignore_path_mtu sctps_params[13].sctp_param_val 111 #define sctps_initial_ssthresh sctps_params[14].sctp_param_val 112 #define sctps_smallest_anon_port sctps_params[15].sctp_param_val 113 #define sctps_largest_anon_port sctps_params[16].sctp_param_val 114 #define sctps_xmit_hiwat sctps_params[17].sctp_param_val 115 #define sctps_xmit_lowat sctps_params[18].sctp_param_val 116 #define sctps_recv_hiwat sctps_params[19].sctp_param_val 117 #define sctps_max_buf sctps_params[20].sctp_param_val 118 #define sctps_rtt_updates sctps_params[21].sctp_param_val 119 #define sctps_ipv6_hoplimit sctps_params[22].sctp_param_val 120 #define sctps_rto_ming sctps_params[23].sctp_param_val 121 #define sctps_rto_ming_high sctps_params[23].sctp_param_max 122 #define sctps_rto_ming_low sctps_params[23].sctp_param_min 123 #define sctps_rto_maxg sctps_params[24].sctp_param_val 124 #define sctps_rto_maxg_high sctps_params[24].sctp_param_max 125 #define sctps_rto_maxg_low sctps_params[24].sctp_param_min 126 #define sctps_rto_initialg sctps_params[25].sctp_param_val 127 #define sctps_rto_initialg_high sctps_params[25].sctp_param_max 128 #define sctps_rto_initialg_low sctps_params[25].sctp_param_min 129 #define sctps_cookie_life sctps_params[26].sctp_param_val 130 #define sctps_cookie_life_high sctps_params[26].sctp_param_max 131 #define sctps_cookie_life_low sctps_params[26].sctp_param_min 132 #define sctps_max_in_streams sctps_params[27].sctp_param_val 133 #define sctps_max_in_streams_high sctps_params[27].sctp_param_max 134 #define sctps_max_in_streams_low sctps_params[27].sctp_param_min 135 #define sctps_initial_out_streams sctps_params[28].sctp_param_val 136 #define sctps_initial_out_streams_high sctps_params[28].sctp_param_max 137 #define sctps_initial_out_streams_low sctps_params[28].sctp_param_min 138 #define sctps_shutack_wait_bound sctps_params[29].sctp_param_val 139 #define sctps_maxburst sctps_params[30].sctp_param_val 140 #define sctps_addip_enabled sctps_params[31].sctp_param_val 141 #define sctps_recv_hiwat_minmss sctps_params[32].sctp_param_val 142 #define sctps_slow_start_initial sctps_params[33].sctp_param_val 143 #define sctps_slow_start_after_idle sctps_params[34].sctp_param_val 144 #define sctps_prsctp_enabled sctps_params[35].sctp_param_val 145 #define sctps_fast_rxt_thresh sctps_params[36].sctp_param_val 146 #define sctps_deferred_acks_max sctps_params[37].sctp_param_val 147 148 /* 149 * sctp_wroff_xtra is the extra space in front of SCTP/IP header for link 150 * layer header. It has to be a multiple of 4. 151 */ 152 #define sctps_wroff_xtra sctps_wroff_xtra_param->sctp_param_val 153 154 /* 155 * Retransmission timer start and stop macro for a given faddr. 156 */ 157 #define SCTP_FADDR_TIMER_RESTART(sctp, fp, intvl) \ 158 { \ 159 dprint(3, ("faddr_timer_restart: fp=%p %x:%x:%x:%x %d\n", \ 160 (void *)(fp), SCTP_PRINTADDR((fp)->faddr), (int)(intvl))); \ 161 sctp_timer((sctp), (fp)->timer_mp, (intvl)); \ 162 (fp)->timer_running = 1; \ 163 } 164 165 #define SCTP_FADDR_TIMER_STOP(fp) \ 166 ASSERT((fp)->timer_mp != NULL); \ 167 if ((fp)->timer_running) { \ 168 sctp_timer_stop((fp)->timer_mp); \ 169 (fp)->timer_running = 0; \ 170 } 171 172 #define SCTP_CALC_RXT(fp, max) \ 173 { \ 174 if (((fp)->rto <<= 1) > (max)) \ 175 (fp)->rto = (max); \ 176 } 177 178 179 #define SCTP_MAX_COMBINED_HEADER_LENGTH (60 + 12) /* Maxed out ip + sctp */ 180 #define SCTP_MAX_IP_OPTIONS_LENGTH (60 - IP_SIMPLE_HDR_LENGTH) 181 #define SCTP_MAX_HDR_LENGTH 60 182 183 #define SCTP_SECRET_LEN 16 184 185 #define SCTP_REFHOLD(sctp) { \ 186 mutex_enter(&(sctp)->sctp_reflock); \ 187 (sctp)->sctp_refcnt++; \ 188 ASSERT((sctp)->sctp_refcnt != 0); \ 189 mutex_exit(&(sctp)->sctp_reflock); \ 190 } 191 192 #define SCTP_REFRELE(sctp) { \ 193 mutex_enter(&(sctp)->sctp_reflock); \ 194 ASSERT((sctp)->sctp_refcnt != 0); \ 195 if (--(sctp)->sctp_refcnt == 0) { \ 196 mutex_exit(&(sctp)->sctp_reflock); \ 197 CONN_DEC_REF((sctp)->sctp_connp); \ 198 } else { \ 199 mutex_exit(&(sctp)->sctp_reflock); \ 200 } \ 201 } 202 203 #define SCTP_G_Q_REFHOLD(sctps) { \ 204 atomic_add_32(&(sctps)->sctps_g_q_ref, 1); \ 205 ASSERT((sctps)->sctps_g_q_ref != 0); \ 206 DTRACE_PROBE1(sctp__g__q__refhold, sctp_stack_t, sctps); \ 207 } 208 209 /* 210 * Decrement the reference count on sctp_g_q 211 * In architectures e.g sun4u, where atomic_add_32_nv is just 212 * a cas, we need to maintain the right memory barrier semantics 213 * as that of mutex_exit i.e all the loads and stores should complete 214 * before the cas is executed. membar_exit() does that here. 215 */ 216 #define SCTP_G_Q_REFRELE(sctps) { \ 217 ASSERT((sctps)->sctps_g_q_ref != 0); \ 218 membar_exit(); \ 219 DTRACE_PROBE1(sctp__g__q__refrele, sctp_stack_t, sctps); \ 220 if (atomic_add_32_nv(&(sctps)->sctps_g_q_ref, -1) == 0) \ 221 sctp_g_q_inactive(sctps); \ 222 } 223 224 #define SCTP_PRINTADDR(a) (a).s6_addr32[0], (a).s6_addr32[1],\ 225 (a).s6_addr32[2], (a).s6_addr32[3] 226 227 #define CONN2SCTP(conn) ((sctp_t *)(&((conn_t *)conn)[1])) 228 229 /* 230 * Outbound data, flags and macros for per-message, per-chunk info 231 */ 232 typedef struct { 233 int64_t smh_ttl; /* Time to Live */ 234 int64_t smh_tob; /* Time of Birth */ 235 uint32_t smh_context; 236 uint16_t smh_sid; 237 uint16_t smh_ssn; 238 uint32_t smh_ppid; 239 uint16_t smh_flags; 240 uint32_t smh_msglen; 241 } sctp_msg_hdr_t; 242 243 #define SCTP_CHUNK_FLAG_SENT 0x01 244 #define SCTP_CHUNK_FLAG_REXMIT 0x02 245 #define SCTP_CHUNK_FLAG_ACKED 0x04 246 #define SCTP_MSG_FLAG_CHUNKED 0x08 247 #define SCTP_MSG_FLAG_ABANDONED 0x10 248 #define SCTP_CHUNK_FLAG_ABANDONED 0x20 249 250 #define SCTP_CHUNK_CLEAR_FLAGS(mp) ((mp)->b_flag = 0) 251 /* 252 * If we are transmitting the chunk for the first time we assign the TSN and 253 * SSN here. The reason we assign the SSN here (as opposed to doing it in 254 * sctp_chunkify()) is that the chunk may expire, if PRSCTP is enabled, before 255 * we get a chance to send it out. If we assign the SSN in sctp_chunkify() 256 * and this happens, then we need to send a Forward TSN to the peer, which 257 * will be expecting this SSN, assuming ordered. If we assign it here we 258 * can just take out the chunk from the transmit list without having to 259 * send a Forward TSN chunk. While assigning the SSN we use (meta)->b_cont 260 * to determine if it needs a new SSN (i.e. the next SSN for the stream), 261 * since (meta)->b_cont signifies the first chunk of a message (if the message 262 * is unordered, then the SSN is 0). 263 * 264 */ 265 #define SCTP_CHUNK_SENT(sctp, mp, sdc, fp, chunkdata, meta) { \ 266 if (!SCTP_CHUNK_ISSENT(mp)) { \ 267 sctp_msg_hdr_t *mhdr = (sctp_msg_hdr_t *)(meta)->b_rptr; \ 268 ASSERT(!SCTP_CHUNK_ABANDONED(mp)); \ 269 (mp)->b_flag = SCTP_CHUNK_FLAG_SENT; \ 270 (sdc)->sdh_tsn = htonl((sctp)->sctp_ltsn++); \ 271 if ((mhdr)->smh_flags & MSG_UNORDERED) { \ 272 (sdc)->sdh_ssn = 0; \ 273 SCTP_DATA_SET_UBIT(sdc); \ 274 BUMP_LOCAL((sctp)->sctp_oudchunks); \ 275 } else { \ 276 BUMP_LOCAL((sctp)->sctp_odchunks); \ 277 if ((mp) == (meta)->b_cont) { \ 278 mhdr->smh_ssn = htons( \ 279 (sctp)->sctp_ostrcntrs[mhdr->smh_sid]++); \ 280 } \ 281 (sdc)->sdh_ssn = mhdr->smh_ssn; \ 282 } \ 283 (sctp)->sctp_unacked += (chunkdata); \ 284 (sctp)->sctp_unsent -= (chunkdata); \ 285 (sctp)->sctp_frwnd -= (chunkdata); \ 286 } else { \ 287 if (SCTP_CHUNK_ISACKED(mp)) { \ 288 (sctp)->sctp_unacked += (chunkdata); \ 289 } else { \ 290 ASSERT(SCTP_CHUNK_DEST(mp)->suna >= ((chunkdata) + \ 291 sizeof (*sdc))); \ 292 SCTP_CHUNK_DEST(mp)->suna -= ((chunkdata) + \ 293 sizeof (*sdc)); \ 294 } \ 295 (mp)->b_flag &= ~(SCTP_CHUNK_FLAG_REXMIT | \ 296 SCTP_CHUNK_FLAG_ACKED); \ 297 SCTP_CHUNK_SET_SACKCNT(mp, 0); \ 298 BUMP_LOCAL(sctp->sctp_rxtchunks); \ 299 BUMP_LOCAL((sctp)->sctp_T3expire); \ 300 BUMP_LOCAL((fp)->T3expire); \ 301 } \ 302 SCTP_SET_CHUNK_DEST(mp, fp); \ 303 (fp)->suna += ((chunkdata) + sizeof (*sdc)); \ 304 } 305 306 #define SCTP_CHUNK_ISSENT(mp) ((mp)->b_flag & SCTP_CHUNK_FLAG_SENT) 307 #define SCTP_CHUNK_CANSEND(mp) \ 308 (!(SCTP_CHUNK_ABANDONED(mp)) && \ 309 (((mp)->b_flag & (SCTP_CHUNK_FLAG_REXMIT|SCTP_CHUNK_FLAG_SENT)) != \ 310 SCTP_CHUNK_FLAG_SENT)) 311 312 #define SCTP_CHUNK_DEST(mp) ((sctp_faddr_t *)(mp)->b_queue) 313 #define SCTP_SET_CHUNK_DEST(mp, fp) ((mp)->b_queue = (queue_t *)fp) 314 315 #define SCTP_CHUNK_REXMIT(mp) ((mp)->b_flag |= SCTP_CHUNK_FLAG_REXMIT) 316 #define SCTP_CHUNK_CLEAR_REXMIT(mp) ((mp)->b_flag &= ~SCTP_CHUNK_FLAG_REXMIT) 317 #define SCTP_CHUNK_WANT_REXMIT(mp) ((mp)->b_flag & SCTP_CHUNK_FLAG_REXMIT) 318 319 #define SCTP_CHUNK_ACKED(mp) \ 320 ((mp)->b_flag = (SCTP_CHUNK_FLAG_SENT|SCTP_CHUNK_FLAG_ACKED)) 321 #define SCTP_CHUNK_ISACKED(mp) ((mp)->b_flag & SCTP_CHUNK_FLAG_ACKED) 322 #define SCTP_CHUNK_CLEAR_ACKED(mp) ((mp)->b_flag &= ~SCTP_CHUNK_FLAG_ACKED) 323 324 #define SCTP_CHUNK_SACKCNT(mp) ((intptr_t)((mp)->b_prev)) 325 #define SCTP_CHUNK_SET_SACKCNT(mp, val) ((mp)->b_prev = \ 326 (mblk_t *)(uintptr_t)(val)) 327 328 #define SCTP_MSG_SET_CHUNKED(mp) ((mp)->b_flag |= SCTP_MSG_FLAG_CHUNKED) 329 #define SCTP_MSG_CLEAR_CHUNKED(mp)((mp)->b_flag &= ~SCTP_MSG_FLAG_CHUNKED) 330 #define SCTP_IS_MSG_CHUNKED(mp) ((mp)->b_flag & SCTP_MSG_FLAG_CHUNKED) 331 332 /* For PR-SCTP */ 333 #define SCTP_ABANDON_CHUNK(mp) ((mp)->b_flag |= SCTP_CHUNK_FLAG_ABANDONED) 334 #define SCTP_CHUNK_ABANDONED(mp) \ 335 ((mp)->b_flag & SCTP_CHUNK_FLAG_ABANDONED) 336 337 #define SCTP_MSG_SET_ABANDONED(mp) \ 338 ((mp)->b_flag |= SCTP_MSG_FLAG_ABANDONED) 339 #define SCTP_MSG_CLEAR_ABANDONED(mp)((mp)->b_flag &= ~SCTP_MSG_FLAG_ABANDONED) 340 #define SCTP_IS_MSG_ABANDONED(mp) ((mp)->b_flag & SCTP_MSG_FLAG_ABANDONED) 341 342 /* 343 * Check if a message has expired. A message is expired if 344 * 1. It has a non-zero time to live value and has not been sent before 345 * that time expires. 346 * 2. It is sent using PRSCTP and it has not been SACK'ed before 347 * its lifetime expires. 348 */ 349 #define SCTP_MSG_TO_BE_ABANDONED(meta, mhdr, sctp) \ 350 (((!SCTP_CHUNK_ISSENT((meta)->b_cont) && (mhdr)->smh_ttl > 0) || \ 351 ((sctp)->sctp_prsctp_aware && ((mhdr)->smh_flags & MSG_PR_SCTP))) && \ 352 ((lbolt64 - (mhdr)->smh_tob) > (mhdr)->smh_ttl)) 353 354 /* SCTP association hash function. */ 355 #define SCTP_CONN_HASH(sctps, ports) \ 356 ((((ports) ^ ((ports) >> 16)) * 31) & \ 357 ((sctps)->sctps_conn_hash_size - 1)) 358 359 /* 360 * Bind hash array size and hash function. The size must be a power 361 * of 2 and lport must be in host byte order. 362 */ 363 #define SCTP_BIND_FANOUT_SIZE 2048 364 #define SCTP_BIND_HASH(lport) (((lport) * 31) & (SCTP_BIND_FANOUT_SIZE - 1)) 365 366 /* options that SCTP negotiates during association establishment */ 367 #define SCTP_PRSCTP_OPTION 0x01 368 369 /* 370 * Listener hash array size and hash function. The size must be a power 371 * of 2 and lport must be in host byte order. 372 */ 373 #define SCTP_LISTEN_FANOUT_SIZE 512 374 #define SCTP_LISTEN_HASH(lport) (((lport) * 31) & (SCTP_LISTEN_FANOUT_SIZE - 1)) 375 376 typedef struct sctp_tf_s { 377 struct sctp_s *tf_sctp; 378 kmutex_t tf_lock; 379 } sctp_tf_t; 380 381 /* Round up the value to the nearest mss. */ 382 #define MSS_ROUNDUP(value, mss) ((((value) - 1) / (mss) + 1) * (mss)) 383 384 extern sin_t sctp_sin_null; /* Zero address for quick clears */ 385 extern sin6_t sctp_sin6_null; /* Zero address for quick clears */ 386 387 #define SCTP_IS_DETACHED(sctp) ((sctp)->sctp_detached) 388 389 /* 390 * Object to represent database of options to search passed to 391 * {sock,tpi}optcom_req() interface routine to take care of option 392 * management and associated methods. 393 * XXX These and other externs should ideally move to a SCTP header 394 */ 395 extern optdb_obj_t sctp_opt_obj; 396 extern uint_t sctp_max_optbuf_len; 397 398 /* Data structure used to track received TSNs */ 399 typedef struct sctp_set_s { 400 struct sctp_set_s *next; 401 struct sctp_set_s *prev; 402 uint32_t begin; 403 uint32_t end; 404 } sctp_set_t; 405 406 /* Data structure used to track TSNs for PR-SCTP */ 407 typedef struct sctp_ftsn_set_s { 408 struct sctp_ftsn_set_s *next; 409 ftsn_entry_t ftsn_entries; 410 } sctp_ftsn_set_t; 411 412 /* Data structure used to track incoming SCTP streams */ 413 typedef struct sctp_instr_s { 414 mblk_t *istr_msgs; 415 int istr_nmsgs; 416 uint16_t nextseq; 417 struct sctp_s *sctp; 418 mblk_t *istr_reass; 419 } sctp_instr_t; 420 421 /* Reassembly data structure (per-stream) */ 422 typedef struct sctp_reass_s { 423 uint16_t ssn; 424 uint16_t needed; 425 uint16_t got; 426 mblk_t *tail; 427 boolean_t partial_delivered; 428 } sctp_reass_t; 429 430 /* debugging */ 431 #undef dprint 432 #ifdef DEBUG 433 extern int sctpdebug; 434 #define dprint(level, args) { if (sctpdebug > (level)) printf args; } 435 #else 436 #define dprint(level, args) {} 437 #endif 438 439 440 /* Peer address tracking */ 441 442 /* 443 * States for peer addresses 444 * 445 * SCTP_FADDRS_UNCONFIRMED: we have not communicated with this peer address 446 * before, mark it as unconfirmed so that we will not send data to it. 447 * All addresses initially are in unconfirmed state and required 448 * validation. SCTP sends a heartbeat to each of them and when it gets 449 * back a heartbeat ACK, the address will be marked as alive. This 450 * validation fixes a security issue with multihoming. If an attacker 451 * establishes an association with us and tells us that it has addresses 452 * belonging to another host A, this will prevent A from communicating 453 * with us. This is fixed by peer address validation. In the above case, 454 * A will respond with an abort. 455 * 456 * SCTP_FADDRS_ALIVE: this peer address is alive and we can communicate with 457 * it with no problem. 458 * 459 * SCTP_FADDRS_DOWN: we have exceeded the retransmission limit to this 460 * peer address. Once an address is marked down, we will only send 461 * a heartbeat to it every hb_interval in case it becomes alive now. 462 * 463 * SCTP_FADDRS_UNREACH: there is no suitable source address to send to 464 * this peer address. For example, the peer address is v6 but we only 465 * have v4 addresses. It is marked unreachable until there is an 466 * address configuration change. At that time, mark these addresses 467 * as unconfirmed and try again to see if those unreachable addresses 468 * are OK as we may have more source addresses. 469 */ 470 typedef enum { 471 SCTP_FADDRS_UNREACH, 472 SCTP_FADDRS_DOWN, 473 SCTP_FADDRS_ALIVE, 474 SCTP_FADDRS_UNCONFIRMED 475 } faddr_state_t; 476 477 typedef struct sctp_faddr_s { 478 struct sctp_faddr_s *next; 479 faddr_state_t state; 480 481 in6_addr_t faddr; 482 in6_addr_t saddr; 483 484 int64_t hb_expiry; /* time to retransmit heartbeat */ 485 uint32_t hb_interval; /* the heartbeat interval */ 486 487 int rto; /* RTO in tick */ 488 int srtt; /* Smoothed RTT in tick */ 489 int rttvar; /* RTT variance in tick */ 490 uint32_t rtt_updates; 491 int strikes; 492 int max_retr; 493 uint32_t sfa_pmss; 494 uint32_t cwnd; 495 uint32_t ssthresh; 496 uint32_t suna; /* sent - unack'ed */ 497 uint32_t pba; /* partial bytes acked */ 498 uint32_t acked; 499 int64_t lastactive; 500 mblk_t *timer_mp; /* retransmission timer control */ 501 uint32_t 502 hb_pending : 1, 503 timer_running : 1, 504 df : 1, 505 pmtu_discovered : 1, 506 507 rc_timer_running : 1, 508 isv4 : 1; 509 510 mblk_t *rc_timer_mp; /* reliable control chunk timer */ 511 ire_t *ire; /* cached IRE */ 512 uint32_t T3expire; /* # of times T3 timer expired */ 513 514 uint64_t hb_secret; /* per addr "secret" in heartbeat */ 515 uint32_t rxt_unacked; /* # unack'ed retransmitted bytes */ 516 } sctp_faddr_t; 517 518 /* Flags to indicate supported address type in the PARM_SUP_ADDRS. */ 519 #define PARM_SUPP_V6 0x1 520 #define PARM_SUPP_V4 0x2 521 522 /* 523 * Set heartbeat interval plus jitter. The jitter is supposed to be random, 524 * up to +/- 50% of the RTO. We use gethrtime() here for performance reason 525 * as the jitter does not really need to be "very" random. 526 */ 527 #define SET_HB_INTVL(fp) \ 528 ((fp)->hb_interval + (fp)->rto + ((fp)->rto >> 1) - \ 529 (uint_t)gethrtime() % (fp)->rto); 530 531 #define SCTP_IPIF_HASH 16 532 533 typedef struct sctp_ipif_hash_s { 534 list_t sctp_ipif_list; 535 int ipif_count; 536 } sctp_ipif_hash_t; 537 538 539 /* 540 * Initialize cwnd according to RFC 3390. def_max_init_cwnd is 541 * either sctp_slow_start_initial or sctp_slow_start_after idle 542 * depending on the caller. 543 */ 544 #define SET_CWND(fp, mss, def_max_init_cwnd) \ 545 { \ 546 (fp)->cwnd = MIN(def_max_init_cwnd * (mss), \ 547 MIN(4 * (mss), MAX(2 * (mss), 4380 / (mss) * (mss)))); \ 548 } 549 550 551 struct sctp_s; 552 553 /* 554 * Control structure for each open SCTP stream, 555 * defined only within the kernel or for a kmem user. 556 * NOTE: sctp_reinit_values MUST have a line for each field in this structure! 557 */ 558 #if (defined(_KERNEL) || defined(_KMEMUSER)) 559 560 typedef struct sctp_s { 561 562 /* 563 * The following is shared with (and duplicated) in IP, so if you 564 * make changes, make sure you also change things in ip_sctp.c. 565 */ 566 struct sctp_s *sctp_conn_hash_next; 567 struct sctp_s *sctp_conn_hash_prev; 568 569 struct sctp_s *sctp_listen_hash_next; 570 struct sctp_s *sctp_listen_hash_prev; 571 572 sctp_tf_t *sctp_listen_tfp; /* Ptr to tf */ 573 sctp_tf_t *sctp_conn_tfp; /* Ptr to tf */ 574 575 /* Global list of sctp */ 576 list_node_t sctp_list; 577 578 sctp_faddr_t *sctp_faddrs; 579 int sctp_nfaddrs; 580 sctp_ipif_hash_t sctp_saddrs[SCTP_IPIF_HASH]; 581 int sctp_nsaddrs; 582 583 /* 584 * These fields contain the same information as sctp_sctph->th_*port. 585 * However, the lookup functions can not use the header fields 586 * since during IP option manipulation the sctp_sctph pointer 587 * changes. 588 */ 589 union { 590 struct { 591 in_port_t sctpu_fport; /* Remote port */ 592 in_port_t sctpu_lport; /* Local port */ 593 } sctpu_ports1; 594 uint32_t sctpu_ports2; /* Rem port, */ 595 /* local port */ 596 /* Used for SCTP_MATCH performance */ 597 } sctp_sctpu; 598 #define sctp_fport sctp_sctpu.sctpu_ports1.sctpu_fport 599 #define sctp_lport sctp_sctpu.sctpu_ports1.sctpu_lport 600 #define sctp_ports sctp_sctpu.sctpu_ports2 601 602 kmutex_t sctp_lock; 603 kcondvar_t sctp_cv; 604 boolean_t sctp_running; 605 606 void *sctp_ulpd; /* SCTP upper layer desc. */ 607 608 struct sctp_upcalls_s sctp_upcalls; /* upcalls for sctp_ulpd */ 609 #define sctp_ulp_newconn sctp_upcalls.su_newconn 610 #define sctp_ulp_connected sctp_upcalls.su_connected 611 #define sctp_ulp_disconnected sctp_upcalls.su_disconnected 612 #define sctp_ulp_disconnecting sctp_upcalls.su_disconnecting 613 #define sctp_ulp_recv sctp_upcalls.su_recv 614 #define sctp_ulp_xmitted sctp_upcalls.su_xmitted 615 #define sctp_ulp_prop sctp_upcalls.su_properties 616 617 int32_t sctp_state; 618 619 conn_t *sctp_connp; /* conn_t stuff */ 620 #define sctp_zoneid sctp_connp->conn_zoneid 621 #define sctp_allzones sctp_connp->conn_allzones 622 #define sctp_mac_exempt sctp_connp->conn_mac_exempt 623 #define sctp_credp sctp_connp->conn_cred 624 #define sctp_reuseaddr sctp_connp->conn_reuseaddr 625 626 sctp_stack_t *sctp_sctps; 627 628 /* Peer address tracking */ 629 sctp_faddr_t *sctp_lastfaddr; /* last faddr in list */ 630 sctp_faddr_t *sctp_primary; /* primary faddr */ 631 sctp_faddr_t *sctp_current; /* current faddr */ 632 sctp_faddr_t *sctp_lastdata; /* last data seen from this */ 633 634 /* Outbound data tracking */ 635 mblk_t *sctp_xmit_head; 636 mblk_t *sctp_xmit_tail; 637 mblk_t *sctp_xmit_unsent; 638 mblk_t *sctp_xmit_unsent_tail; 639 mblk_t *sctp_xmit_unacked; 640 641 int32_t sctp_unacked; /* # of unacked bytes */ 642 int32_t sctp_unsent; /* # of unsent bytes in hand */ 643 644 uint32_t sctp_ltsn; /* Local instance TSN */ 645 uint32_t sctp_lastack_rxd; /* Last rx'd cumtsn */ 646 uint32_t sctp_recovery_tsn; /* Exit from fast recovery */ 647 uint32_t sctp_adv_pap; /* Adv. Peer Ack Point */ 648 649 uint16_t sctp_num_ostr; 650 uint16_t *sctp_ostrcntrs; 651 652 /* sendmsg() default parameters */ 653 uint16_t sctp_def_stream; /* default stream id */ 654 uint16_t sctp_def_flags; /* default xmit flags */ 655 uint32_t sctp_def_ppid; /* default payload id */ 656 uint32_t sctp_def_context; /* default context */ 657 uint32_t sctp_def_timetolive; /* default msg TTL */ 658 659 /* Inbound data tracking */ 660 sctp_set_t *sctp_sack_info; /* Sack tracking */ 661 mblk_t *sctp_ack_mp; /* Delayed ACK timer block */ 662 sctp_instr_t *sctp_instr; /* Instream trackers */ 663 mblk_t *sctp_uo_frags; /* Un-ordered msg. fragments */ 664 uint32_t sctp_ftsn; /* Peer's TSN */ 665 uint32_t sctp_lastacked; /* last cumtsn SACKd */ 666 uint16_t sctp_num_istr; /* No. of instreams */ 667 int32_t sctp_istr_nmsgs; /* No. of chunks in instreams */ 668 int32_t sctp_sack_gaps; /* No. of received gaps */ 669 int32_t sctp_sack_toggle; /* SACK every other pkt */ 670 671 /* RTT calculation */ 672 uint32_t sctp_rtt_tsn; 673 int64_t sctp_out_time; 674 675 /* Stats */ 676 uint64_t sctp_opkts; /* sent pkts */ 677 uint64_t sctp_obchunks; /* sent control chunks */ 678 uint64_t sctp_odchunks; /* sent ordered data chunks */ 679 uint64_t sctp_oudchunks; /* sent unord data chunks */ 680 uint64_t sctp_rxtchunks; /* retransmitted chunks */ 681 uint64_t sctp_ipkts; /* recv pkts */ 682 uint64_t sctp_ibchunks; /* recv control chunks */ 683 uint64_t sctp_idchunks; /* recv ordered data chunks */ 684 uint64_t sctp_iudchunks; /* recv unord data chunks */ 685 uint64_t sctp_fragdmsgs; 686 uint64_t sctp_reassmsgs; 687 uint32_t sctp_T1expire; /* # of times T1timer expired */ 688 uint32_t sctp_T2expire; /* # of times T2timer expired */ 689 uint32_t sctp_T3expire; /* # of times T3timer expired */ 690 uint32_t sctp_assoc_start_time; /* time when assoc was est. */ 691 692 /* Outbound flow control */ 693 int32_t sctp_xmit_hiwater; /* Send high water mark */ 694 int32_t sctp_xmit_lowater; /* Send low water mark */ 695 uint32_t sctp_frwnd; /* Peer RWND */ 696 uint32_t sctp_cwnd_max; 697 698 /* Inbound flow control */ 699 int32_t sctp_rwnd; /* Current receive window */ 700 int32_t sctp_irwnd; /* Initial receive window */ 701 int32_t sctp_rxqueued; /* No. of bytes in RX q's */ 702 703 /* Pre-initialized composite headers */ 704 char *sctp_iphc; /* v4 sctp/ip hdr template buffer */ 705 char *sctp_iphc6; /* v6 sctp/ip hdr template buffer */ 706 707 int32_t sctp_iphc_len; /* actual allocated v4 buffer size */ 708 int32_t sctp_iphc6_len; /* actual allocated v6 buffer size */ 709 710 int32_t sctp_hdr_len; /* len of combined SCTP/IP v4 hdr */ 711 int32_t sctp_hdr6_len; /* len of combined SCTP/IP v6 hdr */ 712 713 ipha_t *sctp_ipha; /* IPv4 header in the buffer */ 714 ip6_t *sctp_ip6h; /* IPv6 header in the buffer */ 715 716 int32_t sctp_ip_hdr_len; /* Byte len of our current v4 hdr */ 717 int32_t sctp_ip_hdr6_len; /* Byte len of our current v6 hdr */ 718 719 sctp_hdr_t *sctp_sctph; /* sctp header in combined v4 hdr */ 720 sctp_hdr_t *sctp_sctph6; /* sctp header in combined v6 hdr */ 721 722 uint32_t sctp_lvtag; /* local SCTP instance verf tag */ 723 uint32_t sctp_fvtag; /* Peer's SCTP verf tag */ 724 725 /* Path MTU Discovery */ 726 int64_t sctp_last_mtu_probe; 727 clock_t sctp_mtu_probe_intvl; 728 uint32_t sctp_mss; /* Max send size (not TCP MSS!) */ 729 730 /* structs sctp_bits, sctp_events are for clearing all bits at once */ 731 struct { 732 uint32_t 733 734 sctp_understands_asconf : 1, /* Peer handles ASCONF chunks */ 735 sctp_debug : 1, /* SO_DEBUG "socket" option. */ 736 sctp_cchunk_pend : 1, /* Control chunk in flight. */ 737 sctp_dgram_errind : 1, /* SO_DGRAM_ERRIND option */ 738 739 sctp_linger : 1, /* SO_LINGER turned on */ 740 sctp_lingering : 1, /* Lingering in close */ 741 sctp_loopback: 1, /* src and dst are the same machine */ 742 sctp_force_sack : 1, 743 744 sctp_ack_timer_running: 1, /* Delayed ACK timer running */ 745 sctp_recvdstaddr : 1, /* return T_EXTCONN_IND with dstaddr */ 746 sctp_hwcksum : 1, /* The NIC is capable of hwcksum */ 747 sctp_understands_addip : 1, 748 749 sctp_bound_to_all : 1, 750 sctp_cansleep : 1, /* itf routines can sleep */ 751 sctp_detached : 1, /* If we're detached from a stream */ 752 sctp_send_adaption : 1, /* send adaption layer ind */ 753 754 sctp_recv_adaption : 1, /* received adaption layer ind */ 755 sctp_ndelay : 1, /* turn off Nagle */ 756 sctp_condemned : 1, /* this sctp is about to disappear */ 757 sctp_chk_fast_rexmit : 1, /* check for fast rexmit message */ 758 759 sctp_prsctp_aware : 1, /* is peer PR-SCTP aware? */ 760 sctp_linklocal : 1, /* is linklocal assoc. */ 761 sctp_rexmitting : 1, /* SCTP is retransmitting */ 762 sctp_zero_win_probe : 1, /* doing zero win probe */ 763 764 sctp_dummy : 8; 765 } sctp_bits; 766 struct { 767 uint32_t 768 769 sctp_recvsndrcvinfo : 1, 770 sctp_recvassocevnt : 1, 771 sctp_recvpathevnt : 1, 772 sctp_recvsendfailevnt : 1, 773 774 sctp_recvpeererr : 1, 775 sctp_recvshutdownevnt : 1, 776 sctp_recvpdevnt : 1, 777 sctp_recvalevnt : 1; 778 } sctp_events; 779 #define sctp_priv_stream sctp_bits.sctp_priv_stream 780 #define sctp_understands_asconf sctp_bits.sctp_understands_asconf 781 #define sctp_debug sctp_bits.sctp_debug 782 #define sctp_cchunk_pend sctp_bits.sctp_cchunk_pend 783 #define sctp_dgram_errind sctp_bits.sctp_dgram_errind 784 #define sctp_linger sctp_bits.sctp_linger 785 #define sctp_lingering sctp_bits.sctp_lingering 786 #define sctp_loopback sctp_bits.sctp_loopback 787 #define sctp_force_sack sctp_bits.sctp_force_sack 788 #define sctp_ack_timer_running sctp_bits.sctp_ack_timer_running 789 #define sctp_recvdstaddr sctp_bits.sctp_recvdstaddr 790 #define sctp_hwcksum sctp_bits.sctp_hwcksum 791 #define sctp_understands_addip sctp_bits.sctp_understands_addip 792 #define sctp_bound_to_all sctp_bits.sctp_bound_to_all 793 #define sctp_cansleep sctp_bits.sctp_cansleep 794 #define sctp_detached sctp_bits.sctp_detached 795 #define sctp_send_adaption sctp_bits.sctp_send_adaption 796 #define sctp_recv_adaption sctp_bits.sctp_recv_adaption 797 #define sctp_ndelay sctp_bits.sctp_ndelay 798 #define sctp_condemned sctp_bits.sctp_condemned 799 #define sctp_chk_fast_rexmit sctp_bits.sctp_chk_fast_rexmit 800 #define sctp_prsctp_aware sctp_bits.sctp_prsctp_aware 801 #define sctp_linklocal sctp_bits.sctp_linklocal 802 #define sctp_rexmitting sctp_bits.sctp_rexmitting 803 #define sctp_zero_win_probe sctp_bits.sctp_zero_win_probe 804 805 #define sctp_recvsndrcvinfo sctp_events.sctp_recvsndrcvinfo 806 #define sctp_recvassocevnt sctp_events.sctp_recvassocevnt 807 #define sctp_recvpathevnt sctp_events.sctp_recvpathevnt 808 #define sctp_recvsendfailevnt sctp_events.sctp_recvsendfailevnt 809 #define sctp_recvpeererr sctp_events.sctp_recvpeererr 810 #define sctp_recvshutdownevnt sctp_events.sctp_recvshutdownevnt 811 #define sctp_recvpdevnt sctp_events.sctp_recvpdevnt 812 #define sctp_recvalevnt sctp_events.sctp_recvalevnt 813 814 /* Retransmit info */ 815 mblk_t *sctp_cookie_mp; /* cookie chunk, if rxt needed */ 816 int32_t sctp_strikes; /* Total number of assoc strikes */ 817 int32_t sctp_max_init_rxt; 818 int32_t sctp_pa_max_rxt; /* Max per-assoc retransmit cnt */ 819 int32_t sctp_pp_max_rxt; /* Max per-path retransmit cnt */ 820 uint32_t sctp_rto_max; 821 uint32_t sctp_init_rto_max; 822 uint32_t sctp_rto_min; 823 uint32_t sctp_rto_initial; 824 825 int64_t sctp_last_secret_update; 826 uint8_t sctp_secret[SCTP_SECRET_LEN]; /* for cookie auth */ 827 uint8_t sctp_old_secret[SCTP_SECRET_LEN]; 828 uint32_t sctp_cookie_lifetime; /* cookie lifetime in tick */ 829 830 /* 831 * Address family that app wishes returned addrsses to be in. 832 * Currently taken from address family used in T_BIND_REQ, but 833 * should really come from family used in original socket() call. 834 * Value can be AF_INET or AF_INET6. 835 */ 836 uint_t sctp_family; 837 ushort_t sctp_ipversion; 838 839 /* Bind hash tables */ 840 kmutex_t *sctp_bind_lockp; /* Ptr to tf_lock */ 841 struct sctp_s *sctp_bind_hash; 842 struct sctp_s **sctp_ptpbhn; 843 844 /* Shutdown / cleanup */ 845 sctp_faddr_t *sctp_shutdown_faddr; /* rotate faddr during shutd */ 846 int32_t sctp_client_errno; /* How the client screwed up */ 847 int sctp_lingertime; /* Close linger time (in seconds) */ 848 kmutex_t sctp_reflock; /* Protects sctp_refcnt & timer mp */ 849 ushort_t sctp_refcnt; /* No. of pending upstream msg */ 850 mblk_t *sctp_timer_mp; /* List of fired timers. */ 851 852 /* Misc */ 853 uint_t sctp_bound_if; /* IPV6_BOUND_IF */ 854 855 mblk_t *sctp_heartbeat_mp; /* Timer block for heartbeats */ 856 uint32_t sctp_hb_interval; /* Default hb_interval */ 857 858 int32_t sctp_autoclose; /* Auto disconnect in ticks */ 859 int64_t sctp_active; /* Last time data/sack on this conn */ 860 uint32_t sctp_tx_adaption_code; /* TX adaptation code */ 861 uint32_t sctp_rx_adaption_code; /* RX adaptation code */ 862 863 /* Reliable control chunks */ 864 mblk_t *sctp_cxmit_list; /* Xmit list for control chunks */ 865 uint32_t sctp_lcsn; /* Our serial number */ 866 uint32_t sctp_fcsn; /* Peer serial number */ 867 868 /* Per association receive queue */ 869 kmutex_t sctp_recvq_lock; 870 mblk_t *sctp_recvq; 871 mblk_t *sctp_recvq_tail; 872 taskq_t *sctp_recvq_tq; 873 874 /* Send queue to IP */ 875 kmutex_t sctp_sendq_lock; 876 mblk_t *sctp_sendq; 877 mblk_t *sctp_sendq_tail; 878 boolean_t sctp_sendq_sending; 879 880 /* IPv6 ancillary data */ 881 uint_t sctp_ipv6_recvancillary; /* flags */ 882 #define SCTP_IPV6_RECVPKTINFO 0x01 /* IPV6_RECVPKTINFO opt */ 883 #define SCTP_IPV6_RECVHOPLIMIT 0x02 /* IPV6_RECVHOPLIMIT opt */ 884 #define SCTP_IPV6_RECVHOPOPTS 0x04 /* IPV6_RECVHOPOPTS opt */ 885 #define SCTP_IPV6_RECVDSTOPTS 0x08 /* IPV6_RECVDSTOPTS opt */ 886 #define SCTP_IPV6_RECVRTHDR 0x10 /* IPV6_RECVRTHDR opt */ 887 #define SCTP_IPV6_RECVRTDSTOPTS 0x20 /* IPV6_RECVRTHDRDSTOPTS opt */ 888 889 uint_t sctp_recvifindex; /* last rcvd IPV6_RCVPKTINFO */ 890 uint_t sctp_recvhops; /* " IPV6_RECVHOPLIMIT */ 891 ip6_hbh_t *sctp_hopopts; /* " IPV6_RECVHOPOPTS */ 892 ip6_dest_t *sctp_dstopts; /* " IPV6_RECVDSTOPTS */ 893 ip6_dest_t *sctp_rtdstopts; /* " IPV6_RECVRTHDRDSTOPTS */ 894 ip6_rthdr_t *sctp_rthdr; /* " IPV6_RECVRTHDR */ 895 uint_t sctp_hopoptslen; 896 uint_t sctp_dstoptslen; 897 uint_t sctp_rtdstoptslen; 898 uint_t sctp_rthdrlen; 899 900 ip6_pkt_t sctp_sticky_ipp; /* Sticky options */ 901 #define sctp_ipp_fields sctp_sticky_ipp.ipp_fields 902 #define sctp_ipp_ifindex sctp_sticky_ipp.ipp_ifindex 903 #define sctp_ipp_addr sctp_sticky_ipp.ipp_addr 904 #define sctp_ipp_hoplimit sctp_sticky_ipp.ipp_hoplimit 905 #define sctp_ipp_hopoptslen sctp_sticky_ipp.ipp_hopoptslen 906 #define sctp_ipp_rtdstoptslen sctp_sticky_ipp.ipp_rtdstoptslen 907 #define sctp_ipp_rthdrlen sctp_sticky_ipp.ipp_rthdrlen 908 #define sctp_ipp_dstoptslen sctp_sticky_ipp.ipp_dstoptslen 909 #define sctp_ipp_hopopts sctp_sticky_ipp.ipp_hopopts 910 #define sctp_ipp_rtdstopts sctp_sticky_ipp.ipp_rtdstopts 911 #define sctp_ipp_rthdr sctp_sticky_ipp.ipp_rthdr 912 #define sctp_ipp_dstopts sctp_sticky_ipp.ipp_dstopts 913 #define sctp_ipp_pathmtu sctp_sticky_ipp.ipp_pathmtu 914 #define sctp_ipp_nexthop sctp_sticky_ipp.ipp_nexthop 915 /* Stats */ 916 uint64_t sctp_msgcount; 917 uint64_t sctp_prsctpdrop; 918 919 uint_t sctp_v4label_len; /* length of cached v4 label */ 920 uint_t sctp_v6label_len; /* length of cached v6 label */ 921 uint32_t sctp_rxt_nxttsn; /* Next TSN to be rexmitted */ 922 uint32_t sctp_rxt_maxtsn; /* Max TSN sent at time out */ 923 } sctp_t; 924 925 #endif /* (defined(_KERNEL) || defined(_KMEMUSER)) */ 926 927 extern void sctp_ack_timer(sctp_t *); 928 extern size_t sctp_adaption_code_param(sctp_t *, uchar_t *); 929 extern void sctp_adaption_event(sctp_t *); 930 extern int sctp_add_faddr(sctp_t *, in6_addr_t *, int, boolean_t); 931 extern boolean_t sctp_add_ftsn_set(sctp_ftsn_set_t **, sctp_faddr_t *, mblk_t *, 932 uint_t *, uint32_t *); 933 extern boolean_t sctp_add_recvq(sctp_t *, mblk_t *, boolean_t); 934 extern void sctp_add_sendq(sctp_t *, mblk_t *); 935 extern void sctp_add_unrec_parm(sctp_parm_hdr_t *, mblk_t **); 936 extern size_t sctp_addr_params(sctp_t *, int, uchar_t *, boolean_t); 937 extern mblk_t *sctp_add_proto_hdr(sctp_t *, sctp_faddr_t *, mblk_t *, int, 938 int *); 939 extern void sctp_addr_req(sctp_t *, mblk_t *); 940 extern sctp_t *sctp_addrlist2sctp(mblk_t *, sctp_hdr_t *, sctp_chunk_hdr_t *, 941 zoneid_t, sctp_stack_t *); 942 extern void sctp_add_hdr(sctp_t *, uchar_t *, size_t); 943 extern void sctp_check_adv_ack_pt(sctp_t *, mblk_t *, mblk_t *); 944 extern void sctp_assoc_event(sctp_t *, uint16_t, uint16_t, 945 sctp_chunk_hdr_t *); 946 947 extern void sctp_bind_hash_insert(sctp_tf_t *, sctp_t *, int); 948 extern void sctp_bind_hash_remove(sctp_t *); 949 extern int sctp_bindi(sctp_t *, in_port_t, boolean_t, int, in_port_t *); 950 extern int sctp_bind_add(sctp_t *, const void *, uint32_t, boolean_t, 951 in_port_t); 952 extern int sctp_bind_del(sctp_t *, const void *, uint32_t, boolean_t); 953 extern int sctp_build_hdrs(sctp_t *); 954 955 extern int sctp_check_abandoned_msg(sctp_t *, mblk_t *); 956 extern void sctp_chunkify(sctp_t *, int, int); 957 extern void sctp_clean_death(sctp_t *, int); 958 extern void sctp_close_eager(sctp_t *); 959 extern int sctp_compare_faddrsets(sctp_faddr_t *, sctp_faddr_t *); 960 extern void sctp_congest_reset(sctp_t *); 961 extern void sctp_conn_hash_insert(sctp_tf_t *, sctp_t *, int); 962 extern void sctp_conn_hash_remove(sctp_t *); 963 extern sctp_t *sctp_conn_match(in6_addr_t *, in6_addr_t *, uint32_t, 964 zoneid_t, sctp_stack_t *); 965 extern sctp_t *sctp_conn_request(sctp_t *, mblk_t *, uint_t, uint_t, 966 sctp_init_chunk_t *, mblk_t *); 967 extern int sctp_conprim_opt_process(queue_t *, mblk_t *, int *, int *, 968 int *); 969 extern uint32_t sctp_cumack(sctp_t *, uint32_t, mblk_t **); 970 extern sctp_t *sctp_create_eager(sctp_t *); 971 972 extern void sctp_dispatch_rput(queue_t *, sctp_t *, sctp_hdr_t *, mblk_t *, 973 uint_t, uint_t, in6_addr_t); 974 extern char *sctp_display(sctp_t *, char *); 975 extern void sctp_display_all(sctp_stack_t *); 976 977 extern void sctp_error_event(sctp_t *, sctp_chunk_hdr_t *); 978 979 extern void sctp_faddr_alive(sctp_t *, sctp_faddr_t *); 980 extern int sctp_faddr_dead(sctp_t *, sctp_faddr_t *, int); 981 extern void sctp_faddr_fini(void); 982 extern void sctp_faddr_init(void); 983 extern void sctp_fast_rexmit(sctp_t *); 984 extern void sctp_fill_sack(sctp_t *, unsigned char *, int); 985 extern void sctp_free_faddr_timers(sctp_t *); 986 extern void sctp_free_ftsn_set(sctp_ftsn_set_t *); 987 extern void sctp_free_msg(mblk_t *); 988 extern void sctp_free_reass(sctp_instr_t *); 989 extern void sctp_free_set(sctp_set_t *); 990 extern void sctp_ftsn_sets_fini(void); 991 extern void sctp_ftsn_sets_init(void); 992 993 extern int sctp_get_addrlist(sctp_t *, const void *, uint32_t *, 994 uchar_t **, int *, size_t *); 995 extern void sctp_g_q_inactive(sctp_stack_t *); 996 extern int sctp_get_addrparams(sctp_t *, sctp_t *, mblk_t *, 997 sctp_chunk_hdr_t *, uint_t *); 998 extern void sctp_get_ire(sctp_t *, sctp_faddr_t *); 999 extern void sctp_get_faddr_list(sctp_t *, uchar_t *, size_t); 1000 extern mblk_t *sctp_get_first_sent(sctp_t *); 1001 extern mblk_t *sctp_get_msg_to_send(sctp_t *, mblk_t **, mblk_t *, int *, 1002 int32_t, uint32_t, sctp_faddr_t *); 1003 extern void sctp_get_saddr_list(sctp_t *, uchar_t *, size_t); 1004 1005 extern int sctp_handle_error(sctp_t *, sctp_hdr_t *, sctp_chunk_hdr_t *, 1006 mblk_t *); 1007 extern void sctp_hash_destroy(sctp_stack_t *); 1008 extern void sctp_hash_init(sctp_stack_t *); 1009 extern int sctp_header_init_ipv4(sctp_t *, int); 1010 extern int sctp_header_init_ipv6(sctp_t *, int); 1011 extern void sctp_heartbeat_timer(sctp_t *); 1012 1013 extern void sctp_icmp_error(sctp_t *, mblk_t *); 1014 extern void sctp_inc_taskq(sctp_stack_t *); 1015 extern void sctp_info_req(sctp_t *, mblk_t *); 1016 extern mblk_t *sctp_init_mp(sctp_t *); 1017 extern boolean_t sctp_initialize_params(sctp_t *, sctp_init_chunk_t *, 1018 sctp_init_chunk_t *); 1019 extern uint32_t sctp_init2vtag(sctp_chunk_hdr_t *); 1020 extern void sctp_intf_event(sctp_t *, in6_addr_t, int, int); 1021 extern void sctp_input_data(sctp_t *, mblk_t *, mblk_t *); 1022 extern void sctp_instream_cleanup(sctp_t *, boolean_t); 1023 extern int sctp_is_a_faddr_clean(sctp_t *); 1024 1025 extern void *sctp_kstat_init(netstackid_t); 1026 extern void sctp_kstat_fini(netstackid_t, kstat_t *); 1027 extern void *sctp_kstat2_init(netstackid_t, sctp_kstat_t *); 1028 extern void sctp_kstat2_fini(netstackid_t, kstat_t *); 1029 1030 extern ssize_t sctp_link_abort(mblk_t *, uint16_t, char *, size_t, int, 1031 boolean_t); 1032 extern void sctp_listen_hash_insert(sctp_tf_t *, sctp_t *); 1033 extern void sctp_listen_hash_remove(sctp_t *); 1034 extern sctp_t *sctp_lookup(sctp_t *, in6_addr_t *, sctp_tf_t *, uint32_t *, 1035 int); 1036 extern sctp_faddr_t *sctp_lookup_faddr(sctp_t *, in6_addr_t *); 1037 1038 extern mblk_t *sctp_make_err(sctp_t *, uint16_t, void *, size_t); 1039 extern mblk_t *sctp_make_ftsn_chunk(sctp_t *, sctp_faddr_t *, 1040 sctp_ftsn_set_t *, uint_t, uint32_t); 1041 extern void sctp_make_ftsns(sctp_t *, mblk_t *, mblk_t *, mblk_t **, 1042 sctp_faddr_t *, uint32_t *); 1043 extern mblk_t *sctp_make_mp(sctp_t *, sctp_faddr_t *, int); 1044 extern mblk_t *sctp_make_sack(sctp_t *, sctp_faddr_t *, mblk_t *); 1045 extern void sctp_maxpsz_set(sctp_t *); 1046 extern void sctp_move_faddr_timers(queue_t *, sctp_t *); 1047 1048 extern void sctp_nd_free(sctp_stack_t *); 1049 extern int sctp_nd_getset(queue_t *, MBLKP); 1050 extern boolean_t sctp_nd_init(sctp_stack_t *); 1051 extern sctp_parm_hdr_t *sctp_next_parm(sctp_parm_hdr_t *, ssize_t *); 1052 1053 extern void sctp_ootb_shutdown_ack(sctp_t *, mblk_t *, uint_t); 1054 extern size_t sctp_options_param(const sctp_t *, void *, int); 1055 extern size_t sctp_options_param_len(const sctp_t *, int); 1056 extern void sctp_output(sctp_t *, uint_t); 1057 1058 extern boolean_t sctp_param_register(IDP *, sctpparam_t *, int, sctp_stack_t *); 1059 extern void sctp_partial_delivery_event(sctp_t *); 1060 extern int sctp_process_cookie(sctp_t *, sctp_chunk_hdr_t *, mblk_t *, 1061 sctp_init_chunk_t **, sctp_hdr_t *, int *, in6_addr_t *); 1062 extern void sctp_process_heartbeat(sctp_t *, sctp_chunk_hdr_t *); 1063 extern void sctp_process_sendq(sctp_t *); 1064 extern void sctp_process_timer(sctp_t *); 1065 1066 extern void sctp_redo_faddr_srcs(sctp_t *); 1067 extern void sctp_regift_xmitlist(sctp_t *); 1068 extern void sctp_return_heartbeat(sctp_t *, sctp_chunk_hdr_t *, mblk_t *); 1069 extern void sctp_rexmit(sctp_t *, sctp_faddr_t *); 1070 extern mblk_t *sctp_rexmit_packet(sctp_t *, mblk_t **, mblk_t **, 1071 sctp_faddr_t *, uint_t *); 1072 extern void sctp_rexmit_timer(sctp_t *, sctp_faddr_t *); 1073 extern sctp_faddr_t *sctp_rotate_faddr(sctp_t *, sctp_faddr_t *); 1074 1075 extern void sctp_sack(sctp_t *, mblk_t *); 1076 extern int sctp_secure_restart_check(mblk_t *, sctp_chunk_hdr_t *, 1077 uint32_t, int, sctp_stack_t *); 1078 extern void sctp_send_abort(sctp_t *, uint32_t, uint16_t, char *, size_t, 1079 mblk_t *, int, boolean_t); 1080 extern void sctp_send_cookie_ack(sctp_t *); 1081 extern void sctp_send_cookie_echo(sctp_t *, sctp_chunk_hdr_t *, mblk_t *); 1082 extern void sctp_send_err(sctp_t *, mblk_t *, sctp_faddr_t *); 1083 extern void sctp_send_initack(sctp_t *, sctp_hdr_t *, sctp_chunk_hdr_t *, 1084 mblk_t *); 1085 extern void sctp_send_shutdown(sctp_t *, int); 1086 extern void sctp_send_heartbeat(sctp_t *, sctp_faddr_t *); 1087 extern void sctp_sendfail_event(sctp_t *, mblk_t *, int, boolean_t); 1088 extern void sctp_set_faddr_current(sctp_t *, sctp_faddr_t *); 1089 extern int sctp_set_hdraddrs(sctp_t *); 1090 extern void sctp_set_saddr(sctp_t *, sctp_faddr_t *); 1091 extern void sctp_sets_init(void); 1092 extern void sctp_sets_fini(void); 1093 extern void sctp_shutdown_event(sctp_t *); 1094 extern void sctp_stop_faddr_timers(sctp_t *); 1095 extern int sctp_shutdown_received(sctp_t *, sctp_chunk_hdr_t *, boolean_t, 1096 boolean_t, sctp_faddr_t *); 1097 extern void sctp_shutdown_complete(sctp_t *); 1098 extern void sctp_set_if_mtu(sctp_t *); 1099 extern void sctp_set_iplen(sctp_t *, mblk_t *); 1100 extern void sctp_set_ulp_prop(sctp_t *); 1101 extern void sctp_ss_rexmit(sctp_t *); 1102 extern size_t sctp_supaddr_param_len(sctp_t *); 1103 extern size_t sctp_supaddr_param(sctp_t *, uchar_t *); 1104 1105 extern void sctp_timer(sctp_t *, mblk_t *, clock_t); 1106 extern mblk_t *sctp_timer_alloc(sctp_t *, pfv_t); 1107 extern void sctp_timer_call(sctp_t *sctp, mblk_t *); 1108 extern void sctp_timer_free(mblk_t *); 1109 extern void sctp_timer_stop(mblk_t *); 1110 extern void sctp_unlink_faddr(sctp_t *, sctp_faddr_t *); 1111 1112 extern void sctp_update_ire(sctp_t *sctp); 1113 extern in_port_t sctp_update_next_port(in_port_t, zone_t *zone, sctp_stack_t *); 1114 extern void sctp_update_rtt(sctp_t *, sctp_faddr_t *, clock_t); 1115 extern void sctp_user_abort(sctp_t *, mblk_t *, boolean_t); 1116 1117 extern void sctp_validate_peer(sctp_t *); 1118 1119 extern void sctp_wput_ioctl(queue_t *, mblk_t *); 1120 1121 extern int sctp_xmit_list_clean(sctp_t *, ssize_t); 1122 1123 extern void sctp_zap_addrs(sctp_t *); 1124 extern void sctp_zap_faddrs(sctp_t *, int); 1125 1126 /* Contract private interface between SCTP and Clustering - PSARC/2005/602 */ 1127 1128 extern void (*cl_sctp_listen)(sa_family_t, uchar_t *, uint_t, in_port_t); 1129 extern void (*cl_sctp_unlisten)(sa_family_t, uchar_t *, uint_t, in_port_t); 1130 extern void (*cl_sctp_connect)(sa_family_t, uchar_t *, uint_t, in_port_t, 1131 uchar_t *, uint_t, in_port_t, boolean_t, cl_sctp_handle_t); 1132 extern void (*cl_sctp_disconnect)(sa_family_t, cl_sctp_handle_t); 1133 extern void (*cl_sctp_assoc_change)(sa_family_t, uchar_t *, size_t, uint_t, 1134 uchar_t *, size_t, uint_t, int, cl_sctp_handle_t); 1135 extern void (*cl_sctp_check_addrs)(sa_family_t, in_port_t, uchar_t **, 1136 size_t, uint_t *, boolean_t); 1137 1138 /* Send a mp to IP. */ 1139 #define IP_PUT(mp, conn, isv4) \ 1140 { \ 1141 sctp_stack_t *sctps = conn->conn_netstack->netstack_sctp; \ 1142 \ 1143 if ((isv4)) \ 1144 ip_output((conn), (mp), WR(sctps->sctps_g_q), IP_WPUT); \ 1145 else \ 1146 ip_output_v6((conn), (mp), WR(sctps->sctps_g_q), IP_WPUT);\ 1147 } 1148 1149 #define RUN_SCTP(sctp) \ 1150 { \ 1151 mutex_enter(&(sctp)->sctp_lock); \ 1152 while ((sctp)->sctp_running) \ 1153 cv_wait(&(sctp)->sctp_cv, &(sctp)->sctp_lock); \ 1154 (sctp)->sctp_running = B_TRUE; \ 1155 mutex_exit(&(sctp)->sctp_lock); \ 1156 } 1157 1158 /* Wake up recvq taskq */ 1159 #define WAKE_SCTP(sctp) \ 1160 { \ 1161 mutex_enter(&(sctp)->sctp_lock); \ 1162 if ((sctp)->sctp_timer_mp != NULL) \ 1163 sctp_process_timer(sctp); \ 1164 (sctp)->sctp_running = B_FALSE; \ 1165 cv_broadcast(&(sctp)->sctp_cv); \ 1166 mutex_exit(&(sctp)->sctp_lock); \ 1167 } 1168 1169 #ifdef __cplusplus 1170 } 1171 #endif 1172 1173 #endif /* _INET_SCTP_SCTP_IMPL_H */ 1174