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 /* For per endpoint association statistics */ 171 #define SCTP_MAX_RTO(sctp, fp) { \ 172 /* \ 173 * Record the maximum observed RTO, \ 174 * sctp_maxrto is zeroed elsewhere \ 175 * at the end of each stats request. \ 176 */ \ 177 (sctp)->sctp_maxrto = \ 178 MAX((sctp)->sctp_maxrto, (fp)->rto); \ 179 DTRACE_PROBE2(sctp__maxrto, sctp_t *, \ 180 sctp, struct sctp_faddr_s, fp); \ 181 } 182 183 #define SCTP_CALC_RXT(sctp, fp) \ 184 { \ 185 if (((fp)->rto <<= 1) > (sctp)->sctp_rto_max) \ 186 (fp)->rto = (sctp)->sctp_rto_max; \ 187 SCTP_MAX_RTO(sctp, fp); \ 188 } 189 190 191 #define SCTP_MAX_COMBINED_HEADER_LENGTH (60 + 12) /* Maxed out ip + sctp */ 192 #define SCTP_MAX_IP_OPTIONS_LENGTH (60 - IP_SIMPLE_HDR_LENGTH) 193 #define SCTP_MAX_HDR_LENGTH 60 194 195 #define SCTP_SECRET_LEN 16 196 197 #define SCTP_REFHOLD(sctp) { \ 198 mutex_enter(&(sctp)->sctp_reflock); \ 199 (sctp)->sctp_refcnt++; \ 200 ASSERT((sctp)->sctp_refcnt != 0); \ 201 mutex_exit(&(sctp)->sctp_reflock); \ 202 } 203 204 #define SCTP_REFRELE(sctp) { \ 205 mutex_enter(&(sctp)->sctp_reflock); \ 206 ASSERT((sctp)->sctp_refcnt != 0); \ 207 if (--(sctp)->sctp_refcnt == 0) { \ 208 mutex_exit(&(sctp)->sctp_reflock); \ 209 CONN_DEC_REF((sctp)->sctp_connp); \ 210 } else { \ 211 mutex_exit(&(sctp)->sctp_reflock); \ 212 } \ 213 } 214 215 #define SCTP_PRINTADDR(a) (a).s6_addr32[0], (a).s6_addr32[1],\ 216 (a).s6_addr32[2], (a).s6_addr32[3] 217 218 #define CONN2SCTP(conn) ((sctp_t *)(&((conn_t *)conn)[1])) 219 220 /* 221 * Outbound data, flags and macros for per-message, per-chunk info 222 */ 223 typedef struct { 224 int64_t smh_ttl; /* Time to Live */ 225 int64_t smh_tob; /* Time of Birth */ 226 uint32_t smh_context; 227 uint16_t smh_sid; 228 uint16_t smh_ssn; 229 uint32_t smh_ppid; 230 uint16_t smh_flags; 231 uint32_t smh_msglen; 232 } sctp_msg_hdr_t; 233 234 #define SCTP_CHUNK_FLAG_SENT 0x01 235 #define SCTP_CHUNK_FLAG_REXMIT 0x02 236 #define SCTP_CHUNK_FLAG_ACKED 0x04 237 #define SCTP_MSG_FLAG_CHUNKED 0x08 238 #define SCTP_MSG_FLAG_ABANDONED 0x10 239 #define SCTP_CHUNK_FLAG_ABANDONED 0x20 240 241 #define SCTP_CHUNK_CLEAR_FLAGS(mp) ((mp)->b_flag = 0) 242 /* 243 * If we are transmitting the chunk for the first time we assign the TSN and 244 * SSN here. The reason we assign the SSN here (as opposed to doing it in 245 * sctp_chunkify()) is that the chunk may expire, if PRSCTP is enabled, before 246 * we get a chance to send it out. If we assign the SSN in sctp_chunkify() 247 * and this happens, then we need to send a Forward TSN to the peer, which 248 * will be expecting this SSN, assuming ordered. If we assign it here we 249 * can just take out the chunk from the transmit list without having to 250 * send a Forward TSN chunk. While assigning the SSN we use (meta)->b_cont 251 * to determine if it needs a new SSN (i.e. the next SSN for the stream), 252 * since (meta)->b_cont signifies the first chunk of a message (if the message 253 * is unordered, then the SSN is 0). 254 * 255 */ 256 #define SCTP_CHUNK_SENT(sctp, mp, sdc, fp, chunkdata, meta) { \ 257 if (!SCTP_CHUNK_ISSENT(mp)) { \ 258 sctp_msg_hdr_t *mhdr = (sctp_msg_hdr_t *)(meta)->b_rptr; \ 259 ASSERT(!SCTP_CHUNK_ABANDONED(mp)); \ 260 (mp)->b_flag = SCTP_CHUNK_FLAG_SENT; \ 261 (sdc)->sdh_tsn = htonl((sctp)->sctp_ltsn++); \ 262 if ((mhdr)->smh_flags & MSG_UNORDERED) { \ 263 (sdc)->sdh_ssn = 0; \ 264 SCTP_DATA_SET_UBIT(sdc); \ 265 BUMP_LOCAL((sctp)->sctp_oudchunks); \ 266 } else { \ 267 BUMP_LOCAL((sctp)->sctp_odchunks); \ 268 if ((mp) == (meta)->b_cont) { \ 269 mhdr->smh_ssn = htons( \ 270 (sctp)->sctp_ostrcntrs[mhdr->smh_sid]++); \ 271 } \ 272 (sdc)->sdh_ssn = mhdr->smh_ssn; \ 273 } \ 274 (sctp)->sctp_unacked += (chunkdata); \ 275 (sctp)->sctp_unsent -= (chunkdata); \ 276 (sctp)->sctp_frwnd -= (chunkdata); \ 277 } else { \ 278 if (SCTP_CHUNK_ISACKED(mp)) { \ 279 (sctp)->sctp_unacked += (chunkdata); \ 280 } else { \ 281 ASSERT(SCTP_CHUNK_DEST(mp)->suna >= ((chunkdata) + \ 282 sizeof (*sdc))); \ 283 SCTP_CHUNK_DEST(mp)->suna -= ((chunkdata) + \ 284 sizeof (*sdc)); \ 285 } \ 286 (mp)->b_flag &= ~(SCTP_CHUNK_FLAG_REXMIT | \ 287 SCTP_CHUNK_FLAG_ACKED); \ 288 SCTP_CHUNK_SET_SACKCNT(mp, 0); \ 289 BUMP_LOCAL(sctp->sctp_rxtchunks); \ 290 BUMP_LOCAL((sctp)->sctp_T3expire); \ 291 BUMP_LOCAL((fp)->T3expire); \ 292 } \ 293 SCTP_SET_CHUNK_DEST(mp, fp); \ 294 (fp)->suna += ((chunkdata) + sizeof (*sdc)); \ 295 } 296 297 #define SCTP_CHUNK_ISSENT(mp) ((mp)->b_flag & SCTP_CHUNK_FLAG_SENT) 298 #define SCTP_CHUNK_CANSEND(mp) \ 299 (!(SCTP_CHUNK_ABANDONED(mp)) && \ 300 (((mp)->b_flag & (SCTP_CHUNK_FLAG_REXMIT|SCTP_CHUNK_FLAG_SENT)) != \ 301 SCTP_CHUNK_FLAG_SENT)) 302 303 #define SCTP_CHUNK_DEST(mp) ((sctp_faddr_t *)(mp)->b_queue) 304 #define SCTP_SET_CHUNK_DEST(mp, fp) ((mp)->b_queue = (queue_t *)fp) 305 306 #define SCTP_CHUNK_REXMIT(mp) ((mp)->b_flag |= SCTP_CHUNK_FLAG_REXMIT) 307 #define SCTP_CHUNK_CLEAR_REXMIT(mp) ((mp)->b_flag &= ~SCTP_CHUNK_FLAG_REXMIT) 308 #define SCTP_CHUNK_WANT_REXMIT(mp) ((mp)->b_flag & SCTP_CHUNK_FLAG_REXMIT) 309 310 #define SCTP_CHUNK_ACKED(mp) \ 311 ((mp)->b_flag = (SCTP_CHUNK_FLAG_SENT|SCTP_CHUNK_FLAG_ACKED)) 312 #define SCTP_CHUNK_ISACKED(mp) ((mp)->b_flag & SCTP_CHUNK_FLAG_ACKED) 313 #define SCTP_CHUNK_CLEAR_ACKED(mp) ((mp)->b_flag &= ~SCTP_CHUNK_FLAG_ACKED) 314 315 #define SCTP_CHUNK_SACKCNT(mp) ((intptr_t)((mp)->b_prev)) 316 #define SCTP_CHUNK_SET_SACKCNT(mp, val) ((mp)->b_prev = \ 317 (mblk_t *)(uintptr_t)(val)) 318 319 #define SCTP_MSG_SET_CHUNKED(mp) ((mp)->b_flag |= SCTP_MSG_FLAG_CHUNKED) 320 #define SCTP_MSG_CLEAR_CHUNKED(mp)((mp)->b_flag &= ~SCTP_MSG_FLAG_CHUNKED) 321 #define SCTP_IS_MSG_CHUNKED(mp) ((mp)->b_flag & SCTP_MSG_FLAG_CHUNKED) 322 323 /* For PR-SCTP */ 324 #define SCTP_ABANDON_CHUNK(mp) ((mp)->b_flag |= SCTP_CHUNK_FLAG_ABANDONED) 325 #define SCTP_CHUNK_ABANDONED(mp) \ 326 ((mp)->b_flag & SCTP_CHUNK_FLAG_ABANDONED) 327 328 #define SCTP_MSG_SET_ABANDONED(mp) \ 329 ((mp)->b_flag |= SCTP_MSG_FLAG_ABANDONED) 330 #define SCTP_MSG_CLEAR_ABANDONED(mp)((mp)->b_flag &= ~SCTP_MSG_FLAG_ABANDONED) 331 #define SCTP_IS_MSG_ABANDONED(mp) ((mp)->b_flag & SCTP_MSG_FLAG_ABANDONED) 332 333 /* 334 * Check if a message has expired. A message is expired if 335 * 1. It has a non-zero time to live value and has not been sent before 336 * that time expires. 337 * 2. It is sent using PRSCTP and it has not been SACK'ed before 338 * its lifetime expires. 339 */ 340 #define SCTP_MSG_TO_BE_ABANDONED(meta, mhdr, sctp) \ 341 (((!SCTP_CHUNK_ISSENT((meta)->b_cont) && (mhdr)->smh_ttl > 0) || \ 342 ((sctp)->sctp_prsctp_aware && ((mhdr)->smh_flags & MSG_PR_SCTP))) && \ 343 ((ddi_get_lbolt64() - (mhdr)->smh_tob) > (mhdr)->smh_ttl)) 344 345 /* SCTP association hash function. */ 346 #define SCTP_CONN_HASH(sctps, ports) \ 347 ((((ports) ^ ((ports) >> 16)) * 31) & \ 348 ((sctps)->sctps_conn_hash_size - 1)) 349 350 /* 351 * Bind hash array size and hash function. The size must be a power 352 * of 2 and lport must be in host byte order. 353 */ 354 #define SCTP_BIND_FANOUT_SIZE 2048 355 #define SCTP_BIND_HASH(lport) (((lport) * 31) & (SCTP_BIND_FANOUT_SIZE - 1)) 356 357 /* options that SCTP negotiates during association establishment */ 358 #define SCTP_PRSCTP_OPTION 0x01 359 360 /* 361 * Listener hash array size and hash function. The size must be a power 362 * of 2 and lport must be in host byte order. 363 */ 364 #define SCTP_LISTEN_FANOUT_SIZE 512 365 #define SCTP_LISTEN_HASH(lport) (((lport) * 31) & (SCTP_LISTEN_FANOUT_SIZE - 1)) 366 367 typedef struct sctp_tf_s { 368 struct sctp_s *tf_sctp; 369 kmutex_t tf_lock; 370 } sctp_tf_t; 371 372 /* Round up the value to the nearest mss. */ 373 #define MSS_ROUNDUP(value, mss) ((((value) - 1) / (mss) + 1) * (mss)) 374 375 extern sin_t sctp_sin_null; /* Zero address for quick clears */ 376 extern sin6_t sctp_sin6_null; /* Zero address for quick clears */ 377 378 #define SCTP_IS_DETACHED(sctp) ((sctp)->sctp_detached) 379 380 /* Data structure used to track received TSNs */ 381 typedef struct sctp_set_s { 382 struct sctp_set_s *next; 383 struct sctp_set_s *prev; 384 uint32_t begin; 385 uint32_t end; 386 } sctp_set_t; 387 388 /* Data structure used to track TSNs for PR-SCTP */ 389 typedef struct sctp_ftsn_set_s { 390 struct sctp_ftsn_set_s *next; 391 ftsn_entry_t ftsn_entries; 392 } sctp_ftsn_set_t; 393 394 /* Data structure used to track incoming SCTP streams */ 395 typedef struct sctp_instr_s { 396 mblk_t *istr_msgs; 397 int istr_nmsgs; 398 uint16_t nextseq; 399 struct sctp_s *sctp; 400 mblk_t *istr_reass; 401 } sctp_instr_t; 402 403 /* Reassembly data structure (per-stream) */ 404 typedef struct sctp_reass_s { 405 uint16_t ssn; 406 uint16_t needed; 407 uint16_t got; 408 uint16_t msglen; /* len of consecutive fragments */ 409 /* from the begining (B-bit) */ 410 mblk_t *tail; 411 boolean_t hasBchunk; /* If the fragment list begins with */ 412 /* a B-bit set chunk */ 413 uint32_t nexttsn; /* TSN of the next fragment we */ 414 /* are expecting */ 415 boolean_t partial_delivered; 416 } sctp_reass_t; 417 418 /* debugging */ 419 #undef dprint 420 #ifdef DEBUG 421 extern int sctpdebug; 422 #define dprint(level, args) { if (sctpdebug > (level)) printf args; } 423 #else 424 #define dprint(level, args) {} 425 #endif 426 427 428 /* Peer address tracking */ 429 430 /* 431 * States for peer addresses 432 * 433 * SCTP_FADDRS_UNCONFIRMED: we have not communicated with this peer address 434 * before, mark it as unconfirmed so that we will not send data to it. 435 * All addresses initially are in unconfirmed state and required 436 * validation. SCTP sends a heartbeat to each of them and when it gets 437 * back a heartbeat ACK, the address will be marked as alive. This 438 * validation fixes a security issue with multihoming. If an attacker 439 * establishes an association with us and tells us that it has addresses 440 * belonging to another host A, this will prevent A from communicating 441 * with us. This is fixed by peer address validation. In the above case, 442 * A will respond with an abort. 443 * 444 * SCTP_FADDRS_ALIVE: this peer address is alive and we can communicate with 445 * it with no problem. 446 * 447 * SCTP_FADDRS_DOWN: we have exceeded the retransmission limit to this 448 * peer address. Once an address is marked down, we will only send 449 * a heartbeat to it every hb_interval in case it becomes alive now. 450 * 451 * SCTP_FADDRS_UNREACH: there is no suitable source address to send to 452 * this peer address. For example, the peer address is v6 but we only 453 * have v4 addresses. It is marked unreachable until there is an 454 * address configuration change. At that time, mark these addresses 455 * as unconfirmed and try again to see if those unreachable addresses 456 * are OK as we may have more source addresses. 457 */ 458 typedef enum { 459 SCTP_FADDRS_UNREACH, 460 SCTP_FADDRS_DOWN, 461 SCTP_FADDRS_ALIVE, 462 SCTP_FADDRS_UNCONFIRMED 463 } faddr_state_t; 464 465 typedef struct sctp_faddr_s { 466 struct sctp_faddr_s *next; 467 faddr_state_t state; 468 469 in6_addr_t faddr; 470 in6_addr_t saddr; 471 472 int64_t hb_expiry; /* time to retransmit heartbeat */ 473 uint32_t hb_interval; /* the heartbeat interval */ 474 475 int rto; /* RTO in tick */ 476 int srtt; /* Smoothed RTT in tick */ 477 int rttvar; /* RTT variance in tick */ 478 uint32_t rtt_updates; 479 int strikes; 480 int max_retr; 481 uint32_t sfa_pmss; 482 uint32_t cwnd; 483 uint32_t ssthresh; 484 uint32_t suna; /* sent - unack'ed */ 485 uint32_t pba; /* partial bytes acked */ 486 uint32_t acked; 487 int64_t lastactive; 488 mblk_t *timer_mp; /* retransmission timer control */ 489 uint32_t 490 hb_pending : 1, 491 timer_running : 1, 492 df : 1, 493 pmtu_discovered : 1, 494 495 rc_timer_running : 1, 496 isv4 : 1, 497 hb_enabled : 1; 498 499 mblk_t *rc_timer_mp; /* reliable control chunk timer */ 500 ip_xmit_attr_t *ixa; /* Transmit attributes */ 501 uint32_t T3expire; /* # of times T3 timer expired */ 502 503 uint64_t hb_secret; /* per addr "secret" in heartbeat */ 504 uint32_t rxt_unacked; /* # unack'ed retransmitted bytes */ 505 } sctp_faddr_t; 506 507 /* Flags to indicate supported address type in the PARM_SUP_ADDRS. */ 508 #define PARM_SUPP_V6 0x1 509 #define PARM_SUPP_V4 0x2 510 511 /* 512 * Set heartbeat interval plus jitter. The jitter is supposed to be random, 513 * up to +/- 50% of the RTO. We use gethrtime() here for performance reason 514 * as the jitter does not really need to be "very" random. 515 */ 516 #define SET_HB_INTVL(fp) \ 517 ((fp)->hb_interval + (fp)->rto + ((fp)->rto >> 1) - \ 518 (uint_t)gethrtime() % (fp)->rto) 519 520 #define SCTP_IPIF_HASH 16 521 522 typedef struct sctp_ipif_hash_s { 523 list_t sctp_ipif_list; 524 int ipif_count; 525 } sctp_ipif_hash_t; 526 527 528 /* 529 * Initialize cwnd according to RFC 3390. def_max_init_cwnd is 530 * either sctp_slow_start_initial or sctp_slow_start_after idle 531 * depending on the caller. 532 */ 533 #define SET_CWND(fp, mss, def_max_init_cwnd) \ 534 { \ 535 (fp)->cwnd = MIN(def_max_init_cwnd * (mss), \ 536 MIN(4 * (mss), MAX(2 * (mss), 4380 / (mss) * (mss)))); \ 537 } 538 539 540 struct sctp_s; 541 542 /* 543 * Control structure for each open SCTP stream, 544 * defined only within the kernel or for a kmem user. 545 * NOTE: sctp_reinit_values MUST have a line for each field in this structure! 546 */ 547 #if (defined(_KERNEL) || defined(_KMEMUSER)) 548 549 typedef struct sctp_s { 550 551 /* 552 * The following is shared with (and duplicated) in IP, so if you 553 * make changes, make sure you also change things in ip_sctp.c. 554 */ 555 struct sctp_s *sctp_conn_hash_next; 556 struct sctp_s *sctp_conn_hash_prev; 557 558 struct sctp_s *sctp_listen_hash_next; 559 struct sctp_s *sctp_listen_hash_prev; 560 561 sctp_tf_t *sctp_listen_tfp; /* Ptr to tf */ 562 sctp_tf_t *sctp_conn_tfp; /* Ptr to tf */ 563 564 /* Global list of sctp */ 565 list_node_t sctp_list; 566 567 sctp_faddr_t *sctp_faddrs; 568 int sctp_nfaddrs; 569 sctp_ipif_hash_t sctp_saddrs[SCTP_IPIF_HASH]; 570 int sctp_nsaddrs; 571 572 kmutex_t sctp_lock; 573 kcondvar_t sctp_cv; 574 boolean_t sctp_running; 575 576 #define sctp_ulpd sctp_connp->conn_upper_handle 577 #define sctp_upcalls sctp_connp->conn_upcalls 578 579 #define sctp_ulp_newconn sctp_upcalls->su_newconn 580 #define sctp_ulp_connected sctp_upcalls->su_connected 581 #define sctp_ulp_disconnected sctp_upcalls->su_disconnected 582 #define sctp_ulp_opctl sctp_upcalls->su_opctl 583 #define sctp_ulp_recv sctp_upcalls->su_recv 584 #define sctp_ulp_xmitted sctp_upcalls->su_txq_full 585 #define sctp_ulp_prop sctp_upcalls->su_set_proto_props 586 587 int32_t sctp_state; 588 589 conn_t *sctp_connp; /* conn_t stuff */ 590 sctp_stack_t *sctp_sctps; 591 592 /* Peer address tracking */ 593 sctp_faddr_t *sctp_lastfaddr; /* last faddr in list */ 594 sctp_faddr_t *sctp_primary; /* primary faddr */ 595 sctp_faddr_t *sctp_current; /* current faddr */ 596 sctp_faddr_t *sctp_lastdata; /* last data seen from this */ 597 598 /* Outbound data tracking */ 599 mblk_t *sctp_xmit_head; 600 mblk_t *sctp_xmit_tail; 601 mblk_t *sctp_xmit_unsent; 602 mblk_t *sctp_xmit_unsent_tail; 603 mblk_t *sctp_xmit_unacked; 604 605 int32_t sctp_unacked; /* # of unacked bytes */ 606 int32_t sctp_unsent; /* # of unsent bytes in hand */ 607 608 uint32_t sctp_ltsn; /* Local instance TSN */ 609 uint32_t sctp_lastack_rxd; /* Last rx'd cumtsn */ 610 uint32_t sctp_recovery_tsn; /* Exit from fast recovery */ 611 uint32_t sctp_adv_pap; /* Adv. Peer Ack Point */ 612 613 uint16_t sctp_num_ostr; 614 uint16_t *sctp_ostrcntrs; 615 616 mblk_t *sctp_pad_mp; /* pad unaligned data chunks */ 617 618 /* sendmsg() default parameters */ 619 uint16_t sctp_def_stream; /* default stream id */ 620 uint16_t sctp_def_flags; /* default xmit flags */ 621 uint32_t sctp_def_ppid; /* default payload id */ 622 uint32_t sctp_def_context; /* default context */ 623 uint32_t sctp_def_timetolive; /* default msg TTL */ 624 625 /* Inbound data tracking */ 626 sctp_set_t *sctp_sack_info; /* Sack tracking */ 627 mblk_t *sctp_ack_mp; /* Delayed ACK timer block */ 628 sctp_instr_t *sctp_instr; /* Instream trackers */ 629 mblk_t *sctp_uo_frags; /* Un-ordered msg. fragments */ 630 uint32_t sctp_ftsn; /* Peer's TSN */ 631 uint32_t sctp_lastacked; /* last cumtsn SACKd */ 632 uint16_t sctp_num_istr; /* No. of instreams */ 633 int32_t sctp_istr_nmsgs; /* No. of chunks in instreams */ 634 int32_t sctp_sack_gaps; /* No. of received gaps */ 635 int32_t sctp_sack_toggle; /* SACK every other pkt */ 636 637 /* RTT calculation */ 638 uint32_t sctp_rtt_tsn; 639 int64_t sctp_out_time; 640 641 /* Stats can be reset by snmp users kstat, netstat and snmp agents */ 642 uint64_t sctp_opkts; /* sent pkts */ 643 uint64_t sctp_obchunks; /* sent control chunks */ 644 uint64_t sctp_odchunks; /* sent ordered data chunks */ 645 uint64_t sctp_oudchunks; /* sent unord data chunks */ 646 uint64_t sctp_rxtchunks; /* retransmitted chunks */ 647 uint64_t sctp_ipkts; /* recv pkts */ 648 uint64_t sctp_ibchunks; /* recv control chunks */ 649 uint64_t sctp_idchunks; /* recv ordered data chunks */ 650 uint64_t sctp_iudchunks; /* recv unord data chunks */ 651 uint64_t sctp_fragdmsgs; 652 uint64_t sctp_reassmsgs; 653 uint32_t sctp_T1expire; /* # of times T1timer expired */ 654 uint32_t sctp_T2expire; /* # of times T2timer expired */ 655 uint32_t sctp_T3expire; /* # of times T3timer expired */ 656 uint32_t sctp_assoc_start_time; /* time when assoc was est. */ 657 658 uint32_t sctp_frwnd; /* Peer RWND */ 659 uint32_t sctp_cwnd_max; 660 661 /* Inbound flow control */ 662 int32_t sctp_rwnd; /* Current receive window */ 663 int32_t sctp_irwnd; /* Initial receive window */ 664 int32_t sctp_rxqueued; /* No. of bytes in RX q's */ 665 666 /* Pre-initialized composite headers */ 667 uchar_t *sctp_iphc; /* v4 sctp/ip hdr template buffer */ 668 uchar_t *sctp_iphc6; /* v6 sctp/ip hdr template buffer */ 669 670 int32_t sctp_iphc_len; /* actual allocated v4 buffer size */ 671 int32_t sctp_iphc6_len; /* actual allocated v6 buffer size */ 672 673 int32_t sctp_hdr_len; /* len of combined SCTP/IP v4 hdr */ 674 int32_t sctp_hdr6_len; /* len of combined SCTP/IP v6 hdr */ 675 676 ipha_t *sctp_ipha; /* IPv4 header in the buffer */ 677 ip6_t *sctp_ip6h; /* IPv6 header in the buffer */ 678 679 int32_t sctp_ip_hdr_len; /* Byte len of our current v4 hdr */ 680 int32_t sctp_ip_hdr6_len; /* Byte len of our current v6 hdr */ 681 682 sctp_hdr_t *sctp_sctph; /* sctp header in combined v4 hdr */ 683 sctp_hdr_t *sctp_sctph6; /* sctp header in combined v6 hdr */ 684 685 uint32_t sctp_lvtag; /* local SCTP instance verf tag */ 686 uint32_t sctp_fvtag; /* Peer's SCTP verf tag */ 687 688 /* Path MTU Discovery */ 689 int64_t sctp_last_mtu_probe; 690 clock_t sctp_mtu_probe_intvl; 691 uint32_t sctp_mss; /* Max send size (not TCP MSS!) */ 692 693 /* structs sctp_bits, sctp_events are for clearing all bits at once */ 694 struct { 695 uint32_t 696 697 sctp_understands_asconf : 1, /* Peer handles ASCONF chunks */ 698 sctp_cchunk_pend : 1, /* Control chunk in flight. */ 699 sctp_lingering : 1, /* Lingering in close */ 700 sctp_loopback: 1, /* src and dst are the same machine */ 701 702 sctp_force_sack : 1, 703 sctp_ack_timer_running: 1, /* Delayed ACK timer running */ 704 sctp_hwcksum : 1, /* The NIC is capable of hwcksum */ 705 sctp_understands_addip : 1, 706 707 sctp_bound_to_all : 1, 708 sctp_cansleep : 1, /* itf routines can sleep */ 709 sctp_detached : 1, /* If we're detached from a stream */ 710 sctp_send_adaptation : 1, /* send adaptation layer ind */ 711 712 sctp_recv_adaptation : 1, /* recv adaptation layer ind */ 713 sctp_ndelay : 1, /* turn off Nagle */ 714 sctp_condemned : 1, /* this sctp is about to disappear */ 715 sctp_chk_fast_rexmit : 1, /* check for fast rexmit message */ 716 717 sctp_prsctp_aware : 1, /* is peer PR-SCTP aware? */ 718 sctp_linklocal : 1, /* is linklocal assoc. */ 719 sctp_rexmitting : 1, /* SCTP is retransmitting */ 720 sctp_zero_win_probe : 1, /* doing zero win probe */ 721 722 sctp_txq_full : 1, /* the tx queue is full */ 723 sctp_ulp_discon_done : 1, /* ulp_disconnecting done */ 724 sctp_dummy : 6; 725 } sctp_bits; 726 struct { 727 uint32_t 728 729 sctp_recvsndrcvinfo : 1, 730 sctp_recvassocevnt : 1, 731 sctp_recvpathevnt : 1, 732 sctp_recvsendfailevnt : 1, 733 734 sctp_recvpeererr : 1, 735 sctp_recvshutdownevnt : 1, 736 sctp_recvpdevnt : 1, 737 sctp_recvalevnt : 1; 738 } sctp_events; 739 #define sctp_priv_stream sctp_bits.sctp_priv_stream 740 #define sctp_understands_asconf sctp_bits.sctp_understands_asconf 741 #define sctp_cchunk_pend sctp_bits.sctp_cchunk_pend 742 #define sctp_lingering sctp_bits.sctp_lingering 743 #define sctp_loopback sctp_bits.sctp_loopback 744 #define sctp_force_sack sctp_bits.sctp_force_sack 745 #define sctp_ack_timer_running sctp_bits.sctp_ack_timer_running 746 #define sctp_hwcksum sctp_bits.sctp_hwcksum 747 #define sctp_understands_addip sctp_bits.sctp_understands_addip 748 #define sctp_bound_to_all sctp_bits.sctp_bound_to_all 749 #define sctp_cansleep sctp_bits.sctp_cansleep 750 #define sctp_detached sctp_bits.sctp_detached 751 #define sctp_send_adaptation sctp_bits.sctp_send_adaptation 752 #define sctp_recv_adaptation sctp_bits.sctp_recv_adaptation 753 #define sctp_ndelay sctp_bits.sctp_ndelay 754 #define sctp_condemned sctp_bits.sctp_condemned 755 #define sctp_chk_fast_rexmit sctp_bits.sctp_chk_fast_rexmit 756 #define sctp_prsctp_aware sctp_bits.sctp_prsctp_aware 757 #define sctp_linklocal sctp_bits.sctp_linklocal 758 #define sctp_rexmitting sctp_bits.sctp_rexmitting 759 #define sctp_zero_win_probe sctp_bits.sctp_zero_win_probe 760 #define sctp_txq_full sctp_bits.sctp_txq_full 761 #define sctp_ulp_discon_done sctp_bits.sctp_ulp_discon_done 762 763 #define sctp_recvsndrcvinfo sctp_events.sctp_recvsndrcvinfo 764 #define sctp_recvassocevnt sctp_events.sctp_recvassocevnt 765 #define sctp_recvpathevnt sctp_events.sctp_recvpathevnt 766 #define sctp_recvsendfailevnt sctp_events.sctp_recvsendfailevnt 767 #define sctp_recvpeererr sctp_events.sctp_recvpeererr 768 #define sctp_recvshutdownevnt sctp_events.sctp_recvshutdownevnt 769 #define sctp_recvpdevnt sctp_events.sctp_recvpdevnt 770 #define sctp_recvalevnt sctp_events.sctp_recvalevnt 771 772 /* Retransmit info */ 773 mblk_t *sctp_cookie_mp; /* cookie chunk, if rxt needed */ 774 int32_t sctp_strikes; /* Total number of assoc strikes */ 775 int32_t sctp_max_init_rxt; 776 int32_t sctp_pa_max_rxt; /* Max per-assoc retransmit cnt */ 777 int32_t sctp_pp_max_rxt; /* Max per-path retransmit cnt */ 778 uint32_t sctp_rto_max; 779 uint32_t sctp_init_rto_max; 780 uint32_t sctp_rto_min; 781 uint32_t sctp_rto_initial; 782 783 int64_t sctp_last_secret_update; 784 uint8_t sctp_secret[SCTP_SECRET_LEN]; /* for cookie auth */ 785 uint8_t sctp_old_secret[SCTP_SECRET_LEN]; 786 uint32_t sctp_cookie_lifetime; /* cookie lifetime in tick */ 787 788 /* Bind hash tables */ 789 kmutex_t *sctp_bind_lockp; /* Ptr to tf_lock */ 790 struct sctp_s *sctp_bind_hash; 791 struct sctp_s **sctp_ptpbhn; 792 793 /* Shutdown / cleanup */ 794 sctp_faddr_t *sctp_shutdown_faddr; /* rotate faddr during shutd */ 795 int32_t sctp_client_errno; /* How the client screwed up */ 796 kmutex_t sctp_reflock; /* Protects sctp_refcnt & timer mp */ 797 ushort_t sctp_refcnt; /* No. of pending upstream msg */ 798 mblk_t *sctp_timer_mp; /* List of fired timers. */ 799 800 mblk_t *sctp_heartbeat_mp; /* Timer block for heartbeats */ 801 uint32_t sctp_hb_interval; /* Default hb_interval */ 802 803 int32_t sctp_autoclose; /* Auto disconnect in ticks */ 804 int64_t sctp_active; /* Last time data/sack on this conn */ 805 uint32_t sctp_tx_adaptation_code; /* TX adaptation code */ 806 uint32_t sctp_rx_adaptation_code; /* RX adaptation code */ 807 808 /* Reliable control chunks */ 809 mblk_t *sctp_cxmit_list; /* Xmit list for control chunks */ 810 uint32_t sctp_lcsn; /* Our serial number */ 811 uint32_t sctp_fcsn; /* Peer serial number */ 812 813 /* Per association receive queue */ 814 kmutex_t sctp_recvq_lock; 815 mblk_t *sctp_recvq; 816 mblk_t *sctp_recvq_tail; 817 taskq_t *sctp_recvq_tq; 818 819 /* IPv6 ancillary data */ 820 uint_t sctp_recvifindex; /* last rcvd IPV6_RCVPKTINFO */ 821 uint_t sctp_recvhops; /* " IPV6_RECVHOPLIMIT */ 822 uint_t sctp_recvtclass; /* " IPV6_RECVTCLASS */ 823 ip6_hbh_t *sctp_hopopts; /* " IPV6_RECVHOPOPTS */ 824 ip6_dest_t *sctp_dstopts; /* " IPV6_RECVDSTOPTS */ 825 ip6_dest_t *sctp_rthdrdstopts; /* " IPV6_RECVRTHDRDSTOPTS */ 826 ip6_rthdr_t *sctp_rthdr; /* " IPV6_RECVRTHDR */ 827 uint_t sctp_hopoptslen; 828 uint_t sctp_dstoptslen; 829 uint_t sctp_rthdrdstoptslen; 830 uint_t sctp_rthdrlen; 831 832 /* Stats */ 833 uint64_t sctp_msgcount; 834 uint64_t sctp_prsctpdrop; 835 836 uint_t sctp_v4label_len; /* length of cached v4 label */ 837 uint_t sctp_v6label_len; /* length of cached v6 label */ 838 uint32_t sctp_rxt_nxttsn; /* Next TSN to be rexmitted */ 839 uint32_t sctp_rxt_maxtsn; /* Max TSN sent at time out */ 840 841 int sctp_pd_point; /* Partial delivery point */ 842 mblk_t *sctp_err_chunks; /* Error chunks */ 843 uint32_t sctp_err_len; /* Total error chunks length */ 844 845 /* additional source data for per endpoint association statistics */ 846 uint64_t sctp_outseqtsns; /* TSN rx > expected TSN */ 847 uint64_t sctp_osacks; /* total sacks sent */ 848 uint64_t sctp_isacks; /* total sacks received */ 849 uint64_t sctp_idupchunks; /* rx dups, ord or unord */ 850 uint64_t sctp_gapcnt; /* total gap acks rx */ 851 /* 852 * Add the current data from the counters which are reset by snmp 853 * to these cumulative counters to use in per endpoint statistics. 854 */ 855 uint64_t sctp_cum_obchunks; /* sent control chunks */ 856 uint64_t sctp_cum_odchunks; /* sent ordered data chunks */ 857 uint64_t sctp_cum_oudchunks; /* sent unord data chunks */ 858 uint64_t sctp_cum_rxtchunks; /* retransmitted chunks */ 859 uint64_t sctp_cum_ibchunks; /* recv control chunks */ 860 uint64_t sctp_cum_idchunks; /* recv ordered data chunks */ 861 uint64_t sctp_cum_iudchunks; /* recv unord data chunks */ 862 863 /* 864 * When non-zero, this is the maximum observed RTO since assoc stats 865 * were last requested. When zero, no RTO update has occurred since 866 * the previous user request for stats on this endpoint. 867 */ 868 int sctp_maxrto; 869 /* 870 * The stored value of sctp_maxrto passed to user during the previous 871 * user request for stats on this endpoint. 872 */ 873 int sctp_prev_maxrto; 874 } sctp_t; 875 876 #define SCTP_TXQ_LEN(sctp) ((sctp)->sctp_unsent + (sctp)->sctp_unacked) 877 #define SCTP_TXQ_UPDATE(sctp) \ 878 if ((sctp)->sctp_txq_full && SCTP_TXQ_LEN(sctp) <= \ 879 (sctp)->sctp_connp->conn_sndlowat) { \ 880 (sctp)->sctp_txq_full = 0; \ 881 (sctp)->sctp_ulp_xmitted((sctp)->sctp_ulpd, \ 882 B_FALSE); \ 883 } 884 885 #endif /* (defined(_KERNEL) || defined(_KMEMUSER)) */ 886 887 extern void sctp_ack_timer(sctp_t *); 888 extern size_t sctp_adaptation_code_param(sctp_t *, uchar_t *); 889 extern void sctp_adaptation_event(sctp_t *); 890 extern void sctp_add_err(sctp_t *, uint16_t, void *, size_t, 891 sctp_faddr_t *); 892 extern int sctp_add_faddr(sctp_t *, in6_addr_t *, int, boolean_t); 893 extern boolean_t sctp_add_ftsn_set(sctp_ftsn_set_t **, sctp_faddr_t *, mblk_t *, 894 uint_t *, uint32_t *); 895 extern void sctp_add_recvq(sctp_t *, mblk_t *, boolean_t, 896 ip_recv_attr_t *); 897 extern void sctp_add_unrec_parm(sctp_parm_hdr_t *, mblk_t **, boolean_t); 898 extern size_t sctp_addr_params(sctp_t *, int, uchar_t *, boolean_t); 899 extern mblk_t *sctp_add_proto_hdr(sctp_t *, sctp_faddr_t *, mblk_t *, int, 900 int *); 901 extern void sctp_addr_req(sctp_t *, mblk_t *); 902 extern sctp_t *sctp_addrlist2sctp(mblk_t *, sctp_hdr_t *, sctp_chunk_hdr_t *, 903 zoneid_t, sctp_stack_t *); 904 extern void sctp_check_adv_ack_pt(sctp_t *, mblk_t *, mblk_t *); 905 extern void sctp_assoc_event(sctp_t *, uint16_t, uint16_t, 906 sctp_chunk_hdr_t *); 907 908 extern void sctp_bind_hash_insert(sctp_tf_t *, sctp_t *, int); 909 extern void sctp_bind_hash_remove(sctp_t *); 910 extern int sctp_bindi(sctp_t *, in_port_t, boolean_t, int, in_port_t *); 911 extern int sctp_bind_add(sctp_t *, const void *, uint32_t, boolean_t, 912 in_port_t); 913 extern int sctp_bind_del(sctp_t *, const void *, uint32_t, boolean_t); 914 extern int sctp_build_hdrs(sctp_t *, int); 915 916 extern int sctp_check_abandoned_msg(sctp_t *, mblk_t *); 917 extern void sctp_clean_death(sctp_t *, int); 918 extern void sctp_close_eager(sctp_t *); 919 extern int sctp_compare_faddrsets(sctp_faddr_t *, sctp_faddr_t *); 920 extern void sctp_congest_reset(sctp_t *); 921 extern void sctp_conn_hash_insert(sctp_tf_t *, sctp_t *, int); 922 extern void sctp_conn_hash_remove(sctp_t *); 923 extern void sctp_conn_init(conn_t *); 924 extern sctp_t *sctp_conn_match(in6_addr_t *, in6_addr_t *, uint32_t, 925 zoneid_t, iaflags_t, sctp_stack_t *); 926 extern sctp_t *sctp_conn_request(sctp_t *, mblk_t *, uint_t, uint_t, 927 sctp_init_chunk_t *, ip_recv_attr_t *); 928 extern uint32_t sctp_cumack(sctp_t *, uint32_t, mblk_t **); 929 extern sctp_t *sctp_create_eager(sctp_t *); 930 931 extern void sctp_dispatch_rput(queue_t *, sctp_t *, sctp_hdr_t *, mblk_t *, 932 uint_t, uint_t, in6_addr_t); 933 extern char *sctp_display(sctp_t *, char *); 934 extern void sctp_display_all(sctp_stack_t *); 935 936 extern void sctp_error_event(sctp_t *, sctp_chunk_hdr_t *); 937 938 extern void sctp_faddr_alive(sctp_t *, sctp_faddr_t *); 939 extern int sctp_faddr_dead(sctp_t *, sctp_faddr_t *, int); 940 extern void sctp_faddr_fini(void); 941 extern void sctp_faddr_init(void); 942 extern void sctp_fast_rexmit(sctp_t *); 943 extern void sctp_fill_sack(sctp_t *, unsigned char *, int); 944 extern void sctp_free_faddr_timers(sctp_t *); 945 extern void sctp_free_ftsn_set(sctp_ftsn_set_t *); 946 extern void sctp_free_msg(mblk_t *); 947 extern void sctp_free_reass(sctp_instr_t *); 948 extern void sctp_free_set(sctp_set_t *); 949 extern void sctp_ftsn_sets_fini(void); 950 extern void sctp_ftsn_sets_init(void); 951 952 extern int sctp_get_addrlist(sctp_t *, const void *, uint32_t *, 953 uchar_t **, int *, size_t *); 954 extern int sctp_get_addrparams(sctp_t *, sctp_t *, mblk_t *, 955 sctp_chunk_hdr_t *, uint_t *); 956 extern void sctp_get_dest(sctp_t *, sctp_faddr_t *); 957 extern void sctp_get_faddr_list(sctp_t *, uchar_t *, size_t); 958 extern mblk_t *sctp_get_first_sent(sctp_t *); 959 extern mblk_t *sctp_get_msg_to_send(sctp_t *, mblk_t **, mblk_t *, int *, 960 int32_t, uint32_t, sctp_faddr_t *); 961 extern void sctp_get_saddr_list(sctp_t *, uchar_t *, size_t); 962 963 extern int sctp_handle_error(sctp_t *, sctp_hdr_t *, sctp_chunk_hdr_t *, 964 mblk_t *, ip_recv_attr_t *); 965 extern void sctp_hash_destroy(sctp_stack_t *); 966 extern void sctp_hash_init(sctp_stack_t *); 967 extern void sctp_heartbeat_timer(sctp_t *); 968 969 extern void sctp_icmp_error(sctp_t *, mblk_t *); 970 extern void sctp_inc_taskq(sctp_stack_t *); 971 extern void sctp_info_req(sctp_t *, mblk_t *); 972 extern mblk_t *sctp_init_mp(sctp_t *, sctp_faddr_t *); 973 extern boolean_t sctp_initialize_params(sctp_t *, sctp_init_chunk_t *, 974 sctp_init_chunk_t *); 975 extern uint32_t sctp_init2vtag(sctp_chunk_hdr_t *); 976 extern void sctp_intf_event(sctp_t *, in6_addr_t, int, int); 977 extern void sctp_input_data(sctp_t *, mblk_t *, ip_recv_attr_t *); 978 extern void sctp_instream_cleanup(sctp_t *, boolean_t); 979 extern int sctp_is_a_faddr_clean(sctp_t *); 980 981 extern void *sctp_kstat_init(netstackid_t); 982 extern void sctp_kstat_fini(netstackid_t, kstat_t *); 983 extern void *sctp_kstat2_init(netstackid_t, sctp_kstat_t *); 984 extern void sctp_kstat2_fini(netstackid_t, kstat_t *); 985 986 extern ssize_t sctp_link_abort(mblk_t *, uint16_t, char *, size_t, int, 987 boolean_t); 988 extern void sctp_listen_hash_insert(sctp_tf_t *, sctp_t *); 989 extern void sctp_listen_hash_remove(sctp_t *); 990 extern sctp_t *sctp_lookup(sctp_t *, in6_addr_t *, sctp_tf_t *, uint32_t *, 991 int); 992 extern sctp_faddr_t *sctp_lookup_faddr(sctp_t *, in6_addr_t *); 993 994 extern mblk_t *sctp_make_err(sctp_t *, uint16_t, void *, size_t); 995 extern mblk_t *sctp_make_ftsn_chunk(sctp_t *, sctp_faddr_t *, 996 sctp_ftsn_set_t *, uint_t, uint32_t); 997 extern void sctp_make_ftsns(sctp_t *, mblk_t *, mblk_t *, mblk_t **, 998 sctp_faddr_t *, uint32_t *); 999 extern mblk_t *sctp_make_mp(sctp_t *, sctp_faddr_t *, int); 1000 extern mblk_t *sctp_make_sack(sctp_t *, sctp_faddr_t *, mblk_t *); 1001 extern void sctp_maxpsz_set(sctp_t *); 1002 extern void sctp_move_faddr_timers(queue_t *, sctp_t *); 1003 1004 extern void sctp_nd_free(sctp_stack_t *); 1005 extern int sctp_nd_getset(queue_t *, MBLKP); 1006 extern boolean_t sctp_nd_init(sctp_stack_t *); 1007 extern sctp_parm_hdr_t *sctp_next_parm(sctp_parm_hdr_t *, ssize_t *); 1008 1009 extern void sctp_ootb_shutdown_ack(mblk_t *, uint_t, ip_recv_attr_t *, 1010 ip_stack_t *); 1011 extern size_t sctp_options_param(const sctp_t *, void *, int); 1012 extern size_t sctp_options_param_len(const sctp_t *, int); 1013 extern void sctp_output(sctp_t *, uint_t); 1014 1015 extern boolean_t sctp_param_register(IDP *, sctpparam_t *, int, sctp_stack_t *); 1016 extern void sctp_partial_delivery_event(sctp_t *); 1017 extern int sctp_process_cookie(sctp_t *, sctp_chunk_hdr_t *, mblk_t *, 1018 sctp_init_chunk_t **, sctp_hdr_t *, int *, in6_addr_t *, 1019 ip_recv_attr_t *); 1020 extern void sctp_process_err(sctp_t *); 1021 extern void sctp_process_heartbeat(sctp_t *, sctp_chunk_hdr_t *); 1022 extern void sctp_process_timer(sctp_t *); 1023 1024 extern void sctp_redo_faddr_srcs(sctp_t *); 1025 extern void sctp_regift_xmitlist(sctp_t *); 1026 extern void sctp_return_heartbeat(sctp_t *, sctp_chunk_hdr_t *, mblk_t *); 1027 extern void sctp_rexmit(sctp_t *, sctp_faddr_t *); 1028 extern mblk_t *sctp_rexmit_packet(sctp_t *, mblk_t **, mblk_t **, 1029 sctp_faddr_t *, uint_t *); 1030 extern void sctp_rexmit_timer(sctp_t *, sctp_faddr_t *); 1031 extern sctp_faddr_t *sctp_rotate_faddr(sctp_t *, sctp_faddr_t *); 1032 1033 extern boolean_t sctp_sack(sctp_t *, mblk_t *); 1034 extern int sctp_secure_restart_check(mblk_t *, sctp_chunk_hdr_t *, 1035 uint32_t, int, sctp_stack_t *, ip_recv_attr_t *); 1036 extern void sctp_send_abort(sctp_t *, uint32_t, uint16_t, char *, size_t, 1037 mblk_t *, int, boolean_t, ip_recv_attr_t *); 1038 extern void sctp_ootb_send_abort(uint32_t, uint16_t, char *, size_t, 1039 const mblk_t *, int, boolean_t, ip_recv_attr_t *, 1040 ip_stack_t *); 1041 extern void sctp_send_cookie_ack(sctp_t *); 1042 extern void sctp_send_cookie_echo(sctp_t *, sctp_chunk_hdr_t *, mblk_t *, 1043 ip_recv_attr_t *); 1044 extern void sctp_send_initack(sctp_t *, sctp_hdr_t *, sctp_chunk_hdr_t *, 1045 mblk_t *, ip_recv_attr_t *); 1046 extern void sctp_send_shutdown(sctp_t *, int); 1047 extern void sctp_send_heartbeat(sctp_t *, sctp_faddr_t *); 1048 extern void sctp_sendfail_event(sctp_t *, mblk_t *, int, boolean_t); 1049 extern void sctp_set_faddr_current(sctp_t *, sctp_faddr_t *); 1050 extern int sctp_set_hdraddrs(sctp_t *); 1051 extern void sctp_set_saddr(sctp_t *, sctp_faddr_t *); 1052 extern void sctp_sets_init(void); 1053 extern void sctp_sets_fini(void); 1054 extern void sctp_shutdown_event(sctp_t *); 1055 extern void sctp_stop_faddr_timers(sctp_t *); 1056 extern int sctp_shutdown_received(sctp_t *, sctp_chunk_hdr_t *, boolean_t, 1057 boolean_t, sctp_faddr_t *); 1058 extern void sctp_shutdown_complete(sctp_t *); 1059 extern void sctp_set_if_mtu(sctp_t *); 1060 extern void sctp_set_iplen(sctp_t *, mblk_t *, ip_xmit_attr_t *); 1061 extern void sctp_set_ulp_prop(sctp_t *); 1062 extern void sctp_ss_rexmit(sctp_t *); 1063 extern size_t sctp_supaddr_param_len(sctp_t *); 1064 extern size_t sctp_supaddr_param(sctp_t *, uchar_t *); 1065 1066 extern void sctp_timer(sctp_t *, mblk_t *, clock_t); 1067 extern mblk_t *sctp_timer_alloc(sctp_t *, pfv_t, int); 1068 extern void sctp_timer_call(sctp_t *sctp, mblk_t *); 1069 extern void sctp_timer_free(mblk_t *); 1070 extern void sctp_timer_stop(mblk_t *); 1071 extern void sctp_unlink_faddr(sctp_t *, sctp_faddr_t *); 1072 1073 extern void sctp_update_dce(sctp_t *sctp); 1074 extern in_port_t sctp_update_next_port(in_port_t, zone_t *zone, sctp_stack_t *); 1075 extern void sctp_update_rtt(sctp_t *, sctp_faddr_t *, clock_t); 1076 extern void sctp_user_abort(sctp_t *, mblk_t *); 1077 1078 extern void sctp_validate_peer(sctp_t *); 1079 1080 extern void sctp_wput_ioctl(queue_t *, mblk_t *); 1081 1082 extern int sctp_xmit_list_clean(sctp_t *, ssize_t); 1083 1084 extern void sctp_zap_addrs(sctp_t *); 1085 extern void sctp_zap_faddrs(sctp_t *, int); 1086 1087 /* Contract private interface between SCTP and Clustering - PSARC/2005/602 */ 1088 1089 extern void (*cl_sctp_listen)(sa_family_t, uchar_t *, uint_t, in_port_t); 1090 extern void (*cl_sctp_unlisten)(sa_family_t, uchar_t *, uint_t, in_port_t); 1091 extern void (*cl_sctp_connect)(sa_family_t, uchar_t *, uint_t, in_port_t, 1092 uchar_t *, uint_t, in_port_t, boolean_t, cl_sctp_handle_t); 1093 extern void (*cl_sctp_disconnect)(sa_family_t, cl_sctp_handle_t); 1094 extern void (*cl_sctp_assoc_change)(sa_family_t, uchar_t *, size_t, uint_t, 1095 uchar_t *, size_t, uint_t, int, cl_sctp_handle_t); 1096 extern void (*cl_sctp_check_addrs)(sa_family_t, in_port_t, uchar_t **, 1097 size_t, uint_t *, boolean_t); 1098 1099 #define RUN_SCTP(sctp) \ 1100 { \ 1101 mutex_enter(&(sctp)->sctp_lock); \ 1102 while ((sctp)->sctp_running) \ 1103 cv_wait(&(sctp)->sctp_cv, &(sctp)->sctp_lock); \ 1104 (sctp)->sctp_running = B_TRUE; \ 1105 mutex_exit(&(sctp)->sctp_lock); \ 1106 } 1107 1108 /* Wake up recvq taskq */ 1109 #define WAKE_SCTP(sctp) \ 1110 { \ 1111 mutex_enter(&(sctp)->sctp_lock); \ 1112 if ((sctp)->sctp_timer_mp != NULL) \ 1113 sctp_process_timer(sctp); \ 1114 (sctp)->sctp_running = B_FALSE; \ 1115 cv_broadcast(&(sctp)->sctp_cv); \ 1116 mutex_exit(&(sctp)->sctp_lock); \ 1117 } 1118 1119 #ifdef __cplusplus 1120 } 1121 #endif 1122 1123 #endif /* _INET_SCTP_SCTP_IMPL_H */ 1124
Indexes created Sat Nov 21 18:49:29 UTC 2009
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