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 DTRACE_PROBE1(sctp_refhold, sctp_t, sctp); \ 201 ASSERT((sctp)->sctp_refcnt != 0); \ 202 mutex_exit(&(sctp)->sctp_reflock); \ 203 } 204 205 #define SCTP_REFRELE(sctp) { \ 206 mutex_enter(&(sctp)->sctp_reflock); \ 207 ASSERT((sctp)->sctp_refcnt != 0); \ 208 if (--(sctp)->sctp_refcnt == 0) { \ 209 DTRACE_PROBE1(sctp_refrele, sctp_t, sctp); \ 210 mutex_exit(&(sctp)->sctp_reflock); \ 211 CONN_DEC_REF((sctp)->sctp_connp); \ 212 } else { \ 213 DTRACE_PROBE1(sctp_refrele, sctp_t, sctp); \ 214 mutex_exit(&(sctp)->sctp_reflock); \ 215 } \ 216 } 217 218 #define SCTP_PRINTADDR(a) (a).s6_addr32[0], (a).s6_addr32[1],\ 219 (a).s6_addr32[2], (a).s6_addr32[3] 220 221 #define CONN2SCTP(conn) ((sctp_t *)(&((conn_t *)conn)[1])) 222 223 /* 224 * Outbound data, flags and macros for per-message, per-chunk info 225 */ 226 typedef struct { 227 int64_t smh_ttl; /* Time to Live */ 228 int64_t smh_tob; /* Time of Birth */ 229 uint32_t smh_context; 230 uint16_t smh_sid; 231 uint16_t smh_ssn; 232 uint32_t smh_ppid; 233 uint16_t smh_flags; 234 uint32_t smh_msglen; 235 } sctp_msg_hdr_t; 236 237 #define SCTP_CHUNK_FLAG_SENT 0x01 238 #define SCTP_CHUNK_FLAG_REXMIT 0x02 239 #define SCTP_CHUNK_FLAG_ACKED 0x04 240 #define SCTP_MSG_FLAG_CHUNKED 0x08 241 #define SCTP_MSG_FLAG_ABANDONED 0x10 242 #define SCTP_CHUNK_FLAG_ABANDONED 0x20 243 244 #define SCTP_CHUNK_CLEAR_FLAGS(mp) ((mp)->b_flag = 0) 245 /* 246 * If we are transmitting the chunk for the first time we assign the TSN and 247 * SSN here. The reason we assign the SSN here (as opposed to doing it in 248 * sctp_chunkify()) is that the chunk may expire, if PRSCTP is enabled, before 249 * we get a chance to send it out. If we assign the SSN in sctp_chunkify() 250 * and this happens, then we need to send a Forward TSN to the peer, which 251 * will be expecting this SSN, assuming ordered. If we assign it here we 252 * can just take out the chunk from the transmit list without having to 253 * send a Forward TSN chunk. While assigning the SSN we use (meta)->b_cont 254 * to determine if it needs a new SSN (i.e. the next SSN for the stream), 255 * since (meta)->b_cont signifies the first chunk of a message (if the message 256 * is unordered, then the SSN is 0). 257 * 258 */ 259 #define SCTP_CHUNK_SENT(sctp, mp, sdc, fp, chunkdata, meta) { \ 260 if (!SCTP_CHUNK_ISSENT(mp)) { \ 261 sctp_msg_hdr_t *mhdr = (sctp_msg_hdr_t *)(meta)->b_rptr; \ 262 ASSERT(!SCTP_CHUNK_ABANDONED(mp)); \ 263 (mp)->b_flag = SCTP_CHUNK_FLAG_SENT; \ 264 (sdc)->sdh_tsn = htonl((sctp)->sctp_ltsn++); \ 265 if ((mhdr)->smh_flags & MSG_UNORDERED) { \ 266 (sdc)->sdh_ssn = 0; \ 267 SCTP_DATA_SET_UBIT(sdc); \ 268 BUMP_LOCAL((sctp)->sctp_oudchunks); \ 269 } else { \ 270 BUMP_LOCAL((sctp)->sctp_odchunks); \ 271 if ((mp) == (meta)->b_cont) { \ 272 mhdr->smh_ssn = htons( \ 273 (sctp)->sctp_ostrcntrs[mhdr->smh_sid]++); \ 274 } \ 275 (sdc)->sdh_ssn = mhdr->smh_ssn; \ 276 } \ 277 (sctp)->sctp_unacked += (chunkdata); \ 278 (sctp)->sctp_unsent -= (chunkdata); \ 279 (sctp)->sctp_frwnd -= (chunkdata); \ 280 } else { \ 281 if (SCTP_CHUNK_ISACKED(mp)) { \ 282 (sctp)->sctp_unacked += (chunkdata); \ 283 } else { \ 284 ASSERT(SCTP_CHUNK_DEST(mp)->suna >= ((chunkdata) + \ 285 sizeof (*sdc))); \ 286 SCTP_CHUNK_DEST(mp)->suna -= ((chunkdata) + \ 287 sizeof (*sdc)); \ 288 } \ 289 (mp)->b_flag &= ~(SCTP_CHUNK_FLAG_REXMIT | \ 290 SCTP_CHUNK_FLAG_ACKED); \ 291 SCTP_CHUNK_SET_SACKCNT(mp, 0); \ 292 BUMP_LOCAL(sctp->sctp_rxtchunks); \ 293 BUMP_LOCAL((sctp)->sctp_T3expire); \ 294 BUMP_LOCAL((fp)->T3expire); \ 295 } \ 296 SCTP_SET_CHUNK_DEST(mp, fp); \ 297 (fp)->suna += ((chunkdata) + sizeof (*sdc)); \ 298 } 299 300 #define SCTP_CHUNK_ISSENT(mp) ((mp)->b_flag & SCTP_CHUNK_FLAG_SENT) 301 #define SCTP_CHUNK_CANSEND(mp) \ 302 (!(SCTP_CHUNK_ABANDONED(mp)) && \ 303 (((mp)->b_flag & (SCTP_CHUNK_FLAG_REXMIT|SCTP_CHUNK_FLAG_SENT)) != \ 304 SCTP_CHUNK_FLAG_SENT)) 305 306 #define SCTP_CHUNK_DEST(mp) ((sctp_faddr_t *)(mp)->b_queue) 307 #define SCTP_SET_CHUNK_DEST(mp, fp) ((mp)->b_queue = (queue_t *)fp) 308 309 #define SCTP_CHUNK_REXMIT(mp) ((mp)->b_flag |= SCTP_CHUNK_FLAG_REXMIT) 310 #define SCTP_CHUNK_CLEAR_REXMIT(mp) ((mp)->b_flag &= ~SCTP_CHUNK_FLAG_REXMIT) 311 #define SCTP_CHUNK_WANT_REXMIT(mp) ((mp)->b_flag & SCTP_CHUNK_FLAG_REXMIT) 312 313 #define SCTP_CHUNK_ACKED(mp) \ 314 ((mp)->b_flag = (SCTP_CHUNK_FLAG_SENT|SCTP_CHUNK_FLAG_ACKED)) 315 #define SCTP_CHUNK_ISACKED(mp) ((mp)->b_flag & SCTP_CHUNK_FLAG_ACKED) 316 #define SCTP_CHUNK_CLEAR_ACKED(mp) ((mp)->b_flag &= ~SCTP_CHUNK_FLAG_ACKED) 317 318 #define SCTP_CHUNK_SACKCNT(mp) ((intptr_t)((mp)->b_prev)) 319 #define SCTP_CHUNK_SET_SACKCNT(mp, val) ((mp)->b_prev = \ 320 (mblk_t *)(uintptr_t)(val)) 321 322 #define SCTP_MSG_SET_CHUNKED(mp) ((mp)->b_flag |= SCTP_MSG_FLAG_CHUNKED) 323 #define SCTP_MSG_CLEAR_CHUNKED(mp)((mp)->b_flag &= ~SCTP_MSG_FLAG_CHUNKED) 324 #define SCTP_IS_MSG_CHUNKED(mp) ((mp)->b_flag & SCTP_MSG_FLAG_CHUNKED) 325 326 /* For PR-SCTP */ 327 #define SCTP_ABANDON_CHUNK(mp) ((mp)->b_flag |= SCTP_CHUNK_FLAG_ABANDONED) 328 #define SCTP_CHUNK_ABANDONED(mp) \ 329 ((mp)->b_flag & SCTP_CHUNK_FLAG_ABANDONED) 330 331 #define SCTP_MSG_SET_ABANDONED(mp) \ 332 ((mp)->b_flag |= SCTP_MSG_FLAG_ABANDONED) 333 #define SCTP_MSG_CLEAR_ABANDONED(mp)((mp)->b_flag &= ~SCTP_MSG_FLAG_ABANDONED) 334 #define SCTP_IS_MSG_ABANDONED(mp) ((mp)->b_flag & SCTP_MSG_FLAG_ABANDONED) 335 336 /* 337 * Check if a message has expired. A message is expired if 338 * 1. It has a non-zero time to live value and has not been sent before 339 * that time expires. 340 * 2. It is sent using PRSCTP and it has not been SACK'ed before 341 * its lifetime expires. 342 */ 343 #define SCTP_MSG_TO_BE_ABANDONED(meta, mhdr, sctp) \ 344 (((!SCTP_CHUNK_ISSENT((meta)->b_cont) && (mhdr)->smh_ttl > 0) || \ 345 ((sctp)->sctp_prsctp_aware && ((mhdr)->smh_flags & MSG_PR_SCTP))) && \ 346 ((ddi_get_lbolt64() - (mhdr)->smh_tob) > (mhdr)->smh_ttl)) 347 348 /* SCTP association hash function. */ 349 #define SCTP_CONN_HASH(sctps, ports) \ 350 ((((ports) ^ ((ports) >> 16)) * 31) & \ 351 ((sctps)->sctps_conn_hash_size - 1)) 352 353 /* 354 * Bind hash array size and hash function. The size must be a power 355 * of 2 and lport must be in host byte order. 356 */ 357 #define SCTP_BIND_FANOUT_SIZE 2048 358 #define SCTP_BIND_HASH(lport) (((lport) * 31) & (SCTP_BIND_FANOUT_SIZE - 1)) 359 360 /* options that SCTP negotiates during association establishment */ 361 #define SCTP_PRSCTP_OPTION 0x01 362 363 /* 364 * Listener hash array size and hash function. The size must be a power 365 * of 2 and lport must be in host byte order. 366 */ 367 #define SCTP_LISTEN_FANOUT_SIZE 512 368 #define SCTP_LISTEN_HASH(lport) (((lport) * 31) & (SCTP_LISTEN_FANOUT_SIZE - 1)) 369 370 typedef struct sctp_tf_s { 371 struct sctp_s *tf_sctp; 372 kmutex_t tf_lock; 373 } sctp_tf_t; 374 375 /* Round up the value to the nearest mss. */ 376 #define MSS_ROUNDUP(value, mss) ((((value) - 1) / (mss) + 1) * (mss)) 377 378 extern sin_t sctp_sin_null; /* Zero address for quick clears */ 379 extern sin6_t sctp_sin6_null; /* Zero address for quick clears */ 380 381 #define SCTP_IS_DETACHED(sctp) ((sctp)->sctp_detached) 382 383 /* Data structure used to track received TSNs */ 384 typedef struct sctp_set_s { 385 struct sctp_set_s *next; 386 struct sctp_set_s *prev; 387 uint32_t begin; 388 uint32_t end; 389 } sctp_set_t; 390 391 /* Data structure used to track TSNs for PR-SCTP */ 392 typedef struct sctp_ftsn_set_s { 393 struct sctp_ftsn_set_s *next; 394 ftsn_entry_t ftsn_entries; 395 } sctp_ftsn_set_t; 396 397 /* Data structure used to track incoming SCTP streams */ 398 typedef struct sctp_instr_s { 399 mblk_t *istr_msgs; 400 int istr_nmsgs; 401 uint16_t nextseq; 402 struct sctp_s *sctp; 403 mblk_t *istr_reass; 404 } sctp_instr_t; 405 406 /* Reassembly data structure (per-stream) */ 407 typedef struct sctp_reass_s { 408 uint16_t ssn; 409 uint16_t needed; 410 uint16_t got; 411 uint16_t msglen; /* len of consecutive fragments */ 412 /* from the begining (B-bit) */ 413 mblk_t *tail; 414 boolean_t hasBchunk; /* If the fragment list begins with */ 415 /* a B-bit set chunk */ 416 uint32_t nexttsn; /* TSN of the next fragment we */ 417 /* are expecting */ 418 boolean_t partial_delivered; 419 } sctp_reass_t; 420 421 /* debugging */ 422 #undef dprint 423 #ifdef DEBUG 424 extern int sctpdebug; 425 #define dprint(level, args) { if (sctpdebug > (level)) printf args; } 426 #else 427 #define dprint(level, args) {} 428 #endif 429 430 431 /* Peer address tracking */ 432 433 /* 434 * States for peer addresses 435 * 436 * SCTP_FADDRS_UNCONFIRMED: we have not communicated with this peer address 437 * before, mark it as unconfirmed so that we will not send data to it. 438 * All addresses initially are in unconfirmed state and required 439 * validation. SCTP sends a heartbeat to each of them and when it gets 440 * back a heartbeat ACK, the address will be marked as alive. This 441 * validation fixes a security issue with multihoming. If an attacker 442 * establishes an association with us and tells us that it has addresses 443 * belonging to another host A, this will prevent A from communicating 444 * with us. This is fixed by peer address validation. In the above case, 445 * A will respond with an abort. 446 * 447 * SCTP_FADDRS_ALIVE: this peer address is alive and we can communicate with 448 * it with no problem. 449 * 450 * SCTP_FADDRS_DOWN: we have exceeded the retransmission limit to this 451 * peer address. Once an address is marked down, we will only send 452 * a heartbeat to it every hb_interval in case it becomes alive now. 453 * 454 * SCTP_FADDRS_UNREACH: there is no suitable source address to send to 455 * this peer address. For example, the peer address is v6 but we only 456 * have v4 addresses. It is marked unreachable until there is an 457 * address configuration change. At that time, mark these addresses 458 * as unconfirmed and try again to see if those unreachable addresses 459 * are OK as we may have more source addresses. 460 */ 461 typedef enum { 462 SCTP_FADDRS_UNREACH, 463 SCTP_FADDRS_DOWN, 464 SCTP_FADDRS_ALIVE, 465 SCTP_FADDRS_UNCONFIRMED 466 } faddr_state_t; 467 468 typedef struct sctp_faddr_s { 469 struct sctp_faddr_s *next; 470 faddr_state_t state; 471 472 in6_addr_t faddr; 473 in6_addr_t saddr; 474 475 int64_t hb_expiry; /* time to retransmit heartbeat */ 476 uint32_t hb_interval; /* the heartbeat interval */ 477 478 int rto; /* RTO in tick */ 479 int srtt; /* Smoothed RTT in tick */ 480 int rttvar; /* RTT variance in tick */ 481 uint32_t rtt_updates; 482 int strikes; 483 int max_retr; 484 uint32_t sfa_pmss; 485 uint32_t cwnd; 486 uint32_t ssthresh; 487 uint32_t suna; /* sent - unack'ed */ 488 uint32_t pba; /* partial bytes acked */ 489 uint32_t acked; 490 int64_t lastactive; 491 mblk_t *timer_mp; /* retransmission timer control */ 492 uint32_t 493 hb_pending : 1, 494 timer_running : 1, 495 df : 1, 496 pmtu_discovered : 1, 497 498 rc_timer_running : 1, 499 isv4 : 1, 500 hb_enabled : 1; 501 502 mblk_t *rc_timer_mp; /* reliable control chunk timer */ 503 ip_xmit_attr_t *ixa; /* Transmit attributes */ 504 uint32_t T3expire; /* # of times T3 timer expired */ 505 506 uint64_t hb_secret; /* per addr "secret" in heartbeat */ 507 uint32_t rxt_unacked; /* # unack'ed retransmitted bytes */ 508 } sctp_faddr_t; 509 510 /* Flags to indicate supported address type in the PARM_SUP_ADDRS. */ 511 #define PARM_SUPP_V6 0x1 512 #define PARM_SUPP_V4 0x2 513 514 /* 515 * Set heartbeat interval plus jitter. The jitter is supposed to be random, 516 * up to +/- 50% of the RTO. We use gethrtime() here for performance reason 517 * as the jitter does not really need to be "very" random. 518 */ 519 #define SET_HB_INTVL(fp) \ 520 ((fp)->hb_interval + (fp)->rto + ((fp)->rto >> 1) - \ 521 (uint_t)gethrtime() % (fp)->rto) 522 523 #define SCTP_IPIF_HASH 16 524 525 typedef struct sctp_ipif_hash_s { 526 list_t sctp_ipif_list; 527 int ipif_count; 528 krwlock_t ipif_hash_lock; 529 } sctp_ipif_hash_t; 530 531 532 /* 533 * Initialize cwnd according to RFC 3390. def_max_init_cwnd is 534 * either sctp_slow_start_initial or sctp_slow_start_after idle 535 * depending on the caller. 536 */ 537 #define SET_CWND(fp, mss, def_max_init_cwnd) \ 538 { \ 539 (fp)->cwnd = MIN(def_max_init_cwnd * (mss), \ 540 MIN(4 * (mss), MAX(2 * (mss), 4380 / (mss) * (mss)))); \ 541 } 542 543 544 struct sctp_s; 545 546 /* 547 * Control structure for each open SCTP stream, 548 * defined only within the kernel or for a kmem user. 549 * NOTE: sctp_reinit_values MUST have a line for each field in this structure! 550 */ 551 #if (defined(_KERNEL) || defined(_KMEMUSER)) 552 553 typedef struct sctp_s { 554 555 /* 556 * The following is shared with (and duplicated) in IP, so if you 557 * make changes, make sure you also change things in ip_sctp.c. 558 */ 559 struct sctp_s *sctp_conn_hash_next; 560 struct sctp_s *sctp_conn_hash_prev; 561 562 struct sctp_s *sctp_listen_hash_next; 563 struct sctp_s *sctp_listen_hash_prev; 564 565 sctp_tf_t *sctp_listen_tfp; /* Ptr to tf */ 566 sctp_tf_t *sctp_conn_tfp; /* Ptr to tf */ 567 568 /* Global list of sctp */ 569 list_node_t sctp_list; 570 571 sctp_faddr_t *sctp_faddrs; 572 int sctp_nfaddrs; 573 sctp_ipif_hash_t sctp_saddrs[SCTP_IPIF_HASH]; 574 int sctp_nsaddrs; 575 576 kmutex_t sctp_lock; 577 kcondvar_t sctp_cv; 578 boolean_t sctp_running; 579 580 #define sctp_ulpd sctp_connp->conn_upper_handle 581 #define sctp_upcalls sctp_connp->conn_upcalls 582 583 #define sctp_ulp_newconn sctp_upcalls->su_newconn 584 #define sctp_ulp_connected sctp_upcalls->su_connected 585 #define sctp_ulp_disconnected sctp_upcalls->su_disconnected 586 #define sctp_ulp_opctl sctp_upcalls->su_opctl 587 #define sctp_ulp_recv sctp_upcalls->su_recv 588 #define sctp_ulp_xmitted sctp_upcalls->su_txq_full 589 #define sctp_ulp_prop sctp_upcalls->su_set_proto_props 590 591 int32_t sctp_state; 592 593 conn_t *sctp_connp; /* conn_t stuff */ 594 sctp_stack_t *sctp_sctps; 595 596 /* Peer address tracking */ 597 sctp_faddr_t *sctp_lastfaddr; /* last faddr in list */ 598 sctp_faddr_t *sctp_primary; /* primary faddr */ 599 sctp_faddr_t *sctp_current; /* current faddr */ 600 sctp_faddr_t *sctp_lastdata; /* last data seen from this */ 601 602 /* Outbound data tracking */ 603 mblk_t *sctp_xmit_head; 604 mblk_t *sctp_xmit_tail; 605 mblk_t *sctp_xmit_unsent; 606 mblk_t *sctp_xmit_unsent_tail; 607 mblk_t *sctp_xmit_unacked; 608 609 int32_t sctp_unacked; /* # of unacked bytes */ 610 int32_t sctp_unsent; /* # of unsent bytes in hand */ 611 612 uint32_t sctp_ltsn; /* Local instance TSN */ 613 uint32_t sctp_lastack_rxd; /* Last rx'd cumtsn */ 614 uint32_t sctp_recovery_tsn; /* Exit from fast recovery */ 615 uint32_t sctp_adv_pap; /* Adv. Peer Ack Point */ 616 617 uint16_t sctp_num_ostr; 618 uint16_t *sctp_ostrcntrs; 619 620 mblk_t *sctp_pad_mp; /* pad unaligned data chunks */ 621 622 /* sendmsg() default parameters */ 623 uint16_t sctp_def_stream; /* default stream id */ 624 uint16_t sctp_def_flags; /* default xmit flags */ 625 uint32_t sctp_def_ppid; /* default payload id */ 626 uint32_t sctp_def_context; /* default context */ 627 uint32_t sctp_def_timetolive; /* default msg TTL */ 628 629 /* Inbound data tracking */ 630 sctp_set_t *sctp_sack_info; /* Sack tracking */ 631 mblk_t *sctp_ack_mp; /* Delayed ACK timer block */ 632 sctp_instr_t *sctp_instr; /* Instream trackers */ 633 mblk_t *sctp_uo_frags; /* Un-ordered msg. fragments */ 634 uint32_t sctp_ftsn; /* Peer's TSN */ 635 uint32_t sctp_lastacked; /* last cumtsn SACKd */ 636 uint16_t sctp_num_istr; /* No. of instreams */ 637 int32_t sctp_istr_nmsgs; /* No. of chunks in instreams */ 638 int32_t sctp_sack_gaps; /* No. of received gaps */ 639 int32_t sctp_sack_toggle; /* SACK every other pkt */ 640 641 /* RTT calculation */ 642 uint32_t sctp_rtt_tsn; 643 int64_t sctp_out_time; 644 645 /* Stats can be reset by snmp users kstat, netstat and snmp agents */ 646 uint64_t sctp_opkts; /* sent pkts */ 647 uint64_t sctp_obchunks; /* sent control chunks */ 648 uint64_t sctp_odchunks; /* sent ordered data chunks */ 649 uint64_t sctp_oudchunks; /* sent unord data chunks */ 650 uint64_t sctp_rxtchunks; /* retransmitted chunks */ 651 uint64_t sctp_ipkts; /* recv pkts */ 652 uint64_t sctp_ibchunks; /* recv control chunks */ 653 uint64_t sctp_idchunks; /* recv ordered data chunks */ 654 uint64_t sctp_iudchunks; /* recv unord data chunks */ 655 uint64_t sctp_fragdmsgs; 656 uint64_t sctp_reassmsgs; 657 uint32_t sctp_T1expire; /* # of times T1timer expired */ 658 uint32_t sctp_T2expire; /* # of times T2timer expired */ 659 uint32_t sctp_T3expire; /* # of times T3timer expired */ 660 uint32_t sctp_assoc_start_time; /* time when assoc was est. */ 661 662 uint32_t sctp_frwnd; /* Peer RWND */ 663 uint32_t sctp_cwnd_max; 664 665 /* Inbound flow control */ 666 int32_t sctp_rwnd; /* Current receive window */ 667 int32_t sctp_irwnd; /* Initial receive window */ 668 int32_t sctp_rxqueued; /* No. of bytes in RX q's */ 669 670 /* Pre-initialized composite headers */ 671 uchar_t *sctp_iphc; /* v4 sctp/ip hdr template buffer */ 672 uchar_t *sctp_iphc6; /* v6 sctp/ip hdr template buffer */ 673 674 int32_t sctp_iphc_len; /* actual allocated v4 buffer size */ 675 int32_t sctp_iphc6_len; /* actual allocated v6 buffer size */ 676 677 int32_t sctp_hdr_len; /* len of combined SCTP/IP v4 hdr */ 678 int32_t sctp_hdr6_len; /* len of combined SCTP/IP v6 hdr */ 679 680 ipha_t *sctp_ipha; /* IPv4 header in the buffer */ 681 ip6_t *sctp_ip6h; /* IPv6 header in the buffer */ 682 683 int32_t sctp_ip_hdr_len; /* Byte len of our current v4 hdr */ 684 int32_t sctp_ip_hdr6_len; /* Byte len of our current v6 hdr */ 685 686 sctp_hdr_t *sctp_sctph; /* sctp header in combined v4 hdr */ 687 sctp_hdr_t *sctp_sctph6; /* sctp header in combined v6 hdr */ 688 689 uint32_t sctp_lvtag; /* local SCTP instance verf tag */ 690 uint32_t sctp_fvtag; /* Peer's SCTP verf tag */ 691 692 /* Path MTU Discovery */ 693 int64_t sctp_last_mtu_probe; 694 clock_t sctp_mtu_probe_intvl; 695 uint32_t sctp_mss; /* Max send size (not TCP MSS!) */ 696 697 /* structs sctp_bits, sctp_events are for clearing all bits at once */ 698 struct { 699 uint32_t 700 701 sctp_understands_asconf : 1, /* Peer handles ASCONF chunks */ 702 sctp_cchunk_pend : 1, /* Control chunk in flight. */ 703 sctp_lingering : 1, /* Lingering in close */ 704 sctp_loopback: 1, /* src and dst are the same machine */ 705 706 sctp_force_sack : 1, 707 sctp_ack_timer_running: 1, /* Delayed ACK timer running */ 708 sctp_hwcksum : 1, /* The NIC is capable of hwcksum */ 709 sctp_understands_addip : 1, 710 711 sctp_bound_to_all : 1, 712 sctp_cansleep : 1, /* itf routines can sleep */ 713 sctp_detached : 1, /* If we're detached from a stream */ 714 sctp_send_adaptation : 1, /* send adaptation layer ind */ 715 716 sctp_recv_adaptation : 1, /* recv adaptation layer ind */ 717 sctp_ndelay : 1, /* turn off Nagle */ 718 sctp_condemned : 1, /* this sctp is about to disappear */ 719 sctp_chk_fast_rexmit : 1, /* check for fast rexmit message */ 720 721 sctp_prsctp_aware : 1, /* is peer PR-SCTP aware? */ 722 sctp_linklocal : 1, /* is linklocal assoc. */ 723 sctp_rexmitting : 1, /* SCTP is retransmitting */ 724 sctp_zero_win_probe : 1, /* doing zero win probe */ 725 726 sctp_txq_full : 1, /* the tx queue is full */ 727 sctp_ulp_discon_done : 1, /* ulp_disconnecting done */ 728 sctp_dummy : 6; 729 } sctp_bits; 730 struct { 731 uint32_t 732 733 sctp_recvsndrcvinfo : 1, 734 sctp_recvassocevnt : 1, 735 sctp_recvpathevnt : 1, 736 sctp_recvsendfailevnt : 1, 737 738 sctp_recvpeererr : 1, 739 sctp_recvshutdownevnt : 1, 740 sctp_recvpdevnt : 1, 741 sctp_recvalevnt : 1; 742 } sctp_events; 743 #define sctp_priv_stream sctp_bits.sctp_priv_stream 744 #define sctp_understands_asconf sctp_bits.sctp_understands_asconf 745 #define sctp_cchunk_pend sctp_bits.sctp_cchunk_pend 746 #define sctp_lingering sctp_bits.sctp_lingering 747 #define sctp_loopback sctp_bits.sctp_loopback 748 #define sctp_force_sack sctp_bits.sctp_force_sack 749 #define sctp_ack_timer_running sctp_bits.sctp_ack_timer_running 750 #define sctp_hwcksum sctp_bits.sctp_hwcksum 751 #define sctp_understands_addip sctp_bits.sctp_understands_addip 752 #define sctp_bound_to_all sctp_bits.sctp_bound_to_all 753 #define sctp_cansleep sctp_bits.sctp_cansleep 754 #define sctp_detached sctp_bits.sctp_detached 755 #define sctp_send_adaptation sctp_bits.sctp_send_adaptation 756 #define sctp_recv_adaptation sctp_bits.sctp_recv_adaptation 757 #define sctp_ndelay sctp_bits.sctp_ndelay 758 #define sctp_condemned sctp_bits.sctp_condemned 759 #define sctp_chk_fast_rexmit sctp_bits.sctp_chk_fast_rexmit 760 #define sctp_prsctp_aware sctp_bits.sctp_prsctp_aware 761 #define sctp_linklocal sctp_bits.sctp_linklocal 762 #define sctp_rexmitting sctp_bits.sctp_rexmitting 763 #define sctp_zero_win_probe sctp_bits.sctp_zero_win_probe 764 #define sctp_txq_full sctp_bits.sctp_txq_full 765 #define sctp_ulp_discon_done sctp_bits.sctp_ulp_discon_done 766 767 #define sctp_recvsndrcvinfo sctp_events.sctp_recvsndrcvinfo 768 #define sctp_recvassocevnt sctp_events.sctp_recvassocevnt 769 #define sctp_recvpathevnt sctp_events.sctp_recvpathevnt 770 #define sctp_recvsendfailevnt sctp_events.sctp_recvsendfailevnt 771 #define sctp_recvpeererr sctp_events.sctp_recvpeererr 772 #define sctp_recvshutdownevnt sctp_events.sctp_recvshutdownevnt 773 #define sctp_recvpdevnt sctp_events.sctp_recvpdevnt 774 #define sctp_recvalevnt sctp_events.sctp_recvalevnt 775 776 /* Retransmit info */ 777 mblk_t *sctp_cookie_mp; /* cookie chunk, if rxt needed */ 778 int32_t sctp_strikes; /* Total number of assoc strikes */ 779 int32_t sctp_max_init_rxt; 780 int32_t sctp_pa_max_rxt; /* Max per-assoc retransmit cnt */ 781 int32_t sctp_pp_max_rxt; /* Max per-path retransmit cnt */ 782 uint32_t sctp_rto_max; 783 uint32_t sctp_init_rto_max; 784 uint32_t sctp_rto_min; 785 uint32_t sctp_rto_initial; 786 787 int64_t sctp_last_secret_update; 788 uint8_t sctp_secret[SCTP_SECRET_LEN]; /* for cookie auth */ 789 uint8_t sctp_old_secret[SCTP_SECRET_LEN]; 790 uint32_t sctp_cookie_lifetime; /* cookie lifetime in tick */ 791 792 /* Bind hash tables */ 793 kmutex_t *sctp_bind_lockp; /* Ptr to tf_lock */ 794 struct sctp_s *sctp_bind_hash; 795 struct sctp_s **sctp_ptpbhn; 796 797 /* Shutdown / cleanup */ 798 sctp_faddr_t *sctp_shutdown_faddr; /* rotate faddr during shutd */ 799 int32_t sctp_client_errno; /* How the client screwed up */ 800 kmutex_t sctp_reflock; /* Protects sctp_refcnt & timer mp */ 801 ushort_t sctp_refcnt; /* No. of pending upstream msg */ 802 mblk_t *sctp_timer_mp; /* List of fired timers. */ 803 804 mblk_t *sctp_heartbeat_mp; /* Timer block for heartbeats */ 805 uint32_t sctp_hb_interval; /* Default hb_interval */ 806 807 int32_t sctp_autoclose; /* Auto disconnect in ticks */ 808 int64_t sctp_active; /* Last time data/sack on this conn */ 809 uint32_t sctp_tx_adaptation_code; /* TX adaptation code */ 810 uint32_t sctp_rx_adaptation_code; /* RX adaptation code */ 811 812 /* Reliable control chunks */ 813 mblk_t *sctp_cxmit_list; /* Xmit list for control chunks */ 814 uint32_t sctp_lcsn; /* Our serial number */ 815 uint32_t sctp_fcsn; /* Peer serial number */ 816 817 /* Per association receive queue */ 818 kmutex_t sctp_recvq_lock; 819 mblk_t *sctp_recvq; 820 mblk_t *sctp_recvq_tail; 821 taskq_t *sctp_recvq_tq; 822 823 /* IPv6 ancillary data */ 824 uint_t sctp_recvifindex; /* last rcvd IPV6_RCVPKTINFO */ 825 uint_t sctp_recvhops; /* " IPV6_RECVHOPLIMIT */ 826 uint_t sctp_recvtclass; /* " IPV6_RECVTCLASS */ 827 ip6_hbh_t *sctp_hopopts; /* " IPV6_RECVHOPOPTS */ 828 ip6_dest_t *sctp_dstopts; /* " IPV6_RECVDSTOPTS */ 829 ip6_dest_t *sctp_rthdrdstopts; /* " IPV6_RECVRTHDRDSTOPTS */ 830 ip6_rthdr_t *sctp_rthdr; /* " IPV6_RECVRTHDR */ 831 uint_t sctp_hopoptslen; 832 uint_t sctp_dstoptslen; 833 uint_t sctp_rthdrdstoptslen; 834 uint_t sctp_rthdrlen; 835 836 /* Stats */ 837 uint64_t sctp_msgcount; 838 uint64_t sctp_prsctpdrop; 839 840 uint_t sctp_v4label_len; /* length of cached v4 label */ 841 uint_t sctp_v6label_len; /* length of cached v6 label */ 842 uint32_t sctp_rxt_nxttsn; /* Next TSN to be rexmitted */ 843 uint32_t sctp_rxt_maxtsn; /* Max TSN sent at time out */ 844 845 int sctp_pd_point; /* Partial delivery point */ 846 mblk_t *sctp_err_chunks; /* Error chunks */ 847 uint32_t sctp_err_len; /* Total error chunks length */ 848 849 /* additional source data for per endpoint association statistics */ 850 uint64_t sctp_outseqtsns; /* TSN rx > expected TSN */ 851 uint64_t sctp_osacks; /* total sacks sent */ 852 uint64_t sctp_isacks; /* total sacks received */ 853 uint64_t sctp_idupchunks; /* rx dups, ord or unord */ 854 uint64_t sctp_gapcnt; /* total gap acks rx */ 855 /* 856 * Add the current data from the counters which are reset by snmp 857 * to these cumulative counters to use in per endpoint statistics. 858 */ 859 uint64_t sctp_cum_obchunks; /* sent control chunks */ 860 uint64_t sctp_cum_odchunks; /* sent ordered data chunks */ 861 uint64_t sctp_cum_oudchunks; /* sent unord data chunks */ 862 uint64_t sctp_cum_rxtchunks; /* retransmitted chunks */ 863 uint64_t sctp_cum_ibchunks; /* recv control chunks */ 864 uint64_t sctp_cum_idchunks; /* recv ordered data chunks */ 865 uint64_t sctp_cum_iudchunks; /* recv unord data chunks */ 866 867 /* 868 * When non-zero, this is the maximum observed RTO since assoc stats 869 * were last requested. When zero, no RTO update has occurred since 870 * the previous user request for stats on this endpoint. 871 */ 872 int sctp_maxrto; 873 /* 874 * The stored value of sctp_maxrto passed to user during the previous 875 * user request for stats on this endpoint. 876 */ 877 int sctp_prev_maxrto; 878 } sctp_t; 879 880 #define SCTP_TXQ_LEN(sctp) ((sctp)->sctp_unsent + (sctp)->sctp_unacked) 881 #define SCTP_TXQ_UPDATE(sctp) \ 882 if ((sctp)->sctp_txq_full && SCTP_TXQ_LEN(sctp) <= \ 883 (sctp)->sctp_connp->conn_sndlowat) { \ 884 (sctp)->sctp_txq_full = 0; \ 885 (sctp)->sctp_ulp_xmitted((sctp)->sctp_ulpd, \ 886 B_FALSE); \ 887 } 888 889 #endif /* (defined(_KERNEL) || defined(_KMEMUSER)) */ 890 891 extern void sctp_ack_timer(sctp_t *); 892 extern size_t sctp_adaptation_code_param(sctp_t *, uchar_t *); 893 extern void sctp_adaptation_event(sctp_t *); 894 extern void sctp_add_err(sctp_t *, uint16_t, void *, size_t, 895 sctp_faddr_t *); 896 extern int sctp_add_faddr(sctp_t *, in6_addr_t *, int, boolean_t); 897 extern boolean_t sctp_add_ftsn_set(sctp_ftsn_set_t **, sctp_faddr_t *, mblk_t *, 898 uint_t *, uint32_t *); 899 extern void sctp_add_recvq(sctp_t *, mblk_t *, boolean_t, 900 ip_recv_attr_t *); 901 extern void sctp_add_unrec_parm(sctp_parm_hdr_t *, mblk_t **, boolean_t); 902 extern size_t sctp_addr_params(sctp_t *, int, uchar_t *, boolean_t); 903 extern mblk_t *sctp_add_proto_hdr(sctp_t *, sctp_faddr_t *, mblk_t *, int, 904 int *); 905 extern void sctp_addr_req(sctp_t *, mblk_t *); 906 extern sctp_t *sctp_addrlist2sctp(mblk_t *, sctp_hdr_t *, sctp_chunk_hdr_t *, 907 zoneid_t, sctp_stack_t *); 908 extern void sctp_check_adv_ack_pt(sctp_t *, mblk_t *, mblk_t *); 909 extern void sctp_assoc_event(sctp_t *, uint16_t, uint16_t, 910 sctp_chunk_hdr_t *); 911 912 extern void sctp_bind_hash_insert(sctp_tf_t *, sctp_t *, int); 913 extern void sctp_bind_hash_remove(sctp_t *); 914 extern int sctp_bindi(sctp_t *, in_port_t, boolean_t, int, in_port_t *); 915 extern int sctp_bind_add(sctp_t *, const void *, uint32_t, boolean_t, 916 in_port_t); 917 extern int sctp_bind_del(sctp_t *, const void *, uint32_t, boolean_t); 918 extern int sctp_build_hdrs(sctp_t *, int); 919 920 extern int sctp_check_abandoned_msg(sctp_t *, mblk_t *); 921 extern void sctp_clean_death(sctp_t *, int); 922 extern void sctp_close_eager(sctp_t *); 923 extern int sctp_compare_faddrsets(sctp_faddr_t *, sctp_faddr_t *); 924 extern void sctp_congest_reset(sctp_t *); 925 extern void sctp_conn_hash_insert(sctp_tf_t *, sctp_t *, int); 926 extern void sctp_conn_hash_remove(sctp_t *); 927 extern void sctp_conn_init(conn_t *); 928 extern sctp_t *sctp_conn_match(in6_addr_t *, in6_addr_t *, uint32_t, 929 zoneid_t, iaflags_t, sctp_stack_t *); 930 extern sctp_t *sctp_conn_request(sctp_t *, mblk_t *, uint_t, uint_t, 931 sctp_init_chunk_t *, ip_recv_attr_t *); 932 extern uint32_t sctp_cumack(sctp_t *, uint32_t, mblk_t **); 933 extern sctp_t *sctp_create_eager(sctp_t *); 934 935 extern void sctp_dispatch_rput(queue_t *, sctp_t *, sctp_hdr_t *, mblk_t *, 936 uint_t, uint_t, in6_addr_t); 937 extern char *sctp_display(sctp_t *, char *); 938 extern void sctp_display_all(sctp_stack_t *); 939 940 extern void sctp_error_event(sctp_t *, sctp_chunk_hdr_t *); 941 942 extern void sctp_faddr_alive(sctp_t *, sctp_faddr_t *); 943 extern int sctp_faddr_dead(sctp_t *, sctp_faddr_t *, int); 944 extern void sctp_faddr_fini(void); 945 extern void sctp_faddr_init(void); 946 extern void sctp_fast_rexmit(sctp_t *); 947 extern void sctp_fill_sack(sctp_t *, unsigned char *, int); 948 extern void sctp_free_faddr_timers(sctp_t *); 949 extern void sctp_free_ftsn_set(sctp_ftsn_set_t *); 950 extern void sctp_free_msg(mblk_t *); 951 extern void sctp_free_reass(sctp_instr_t *); 952 extern void sctp_free_set(sctp_set_t *); 953 extern void sctp_ftsn_sets_fini(void); 954 extern void sctp_ftsn_sets_init(void); 955 956 extern int sctp_get_addrlist(sctp_t *, const void *, uint32_t *, 957 uchar_t **, int *, size_t *); 958 extern int sctp_get_addrparams(sctp_t *, sctp_t *, mblk_t *, 959 sctp_chunk_hdr_t *, uint_t *); 960 extern void sctp_get_dest(sctp_t *, sctp_faddr_t *); 961 extern void sctp_get_faddr_list(sctp_t *, uchar_t *, size_t); 962 extern mblk_t *sctp_get_first_sent(sctp_t *); 963 extern mblk_t *sctp_get_msg_to_send(sctp_t *, mblk_t **, mblk_t *, int *, 964 int32_t, uint32_t, sctp_faddr_t *); 965 extern void sctp_get_saddr_list(sctp_t *, uchar_t *, size_t); 966 967 extern int sctp_handle_error(sctp_t *, sctp_hdr_t *, sctp_chunk_hdr_t *, 968 mblk_t *, ip_recv_attr_t *); 969 extern void sctp_hash_destroy(sctp_stack_t *); 970 extern void sctp_hash_init(sctp_stack_t *); 971 extern void sctp_heartbeat_timer(sctp_t *); 972 973 extern void sctp_icmp_error(sctp_t *, mblk_t *); 974 extern void sctp_inc_taskq(sctp_stack_t *); 975 extern void sctp_info_req(sctp_t *, mblk_t *); 976 extern mblk_t *sctp_init_mp(sctp_t *, sctp_faddr_t *); 977 extern boolean_t sctp_initialize_params(sctp_t *, sctp_init_chunk_t *, 978 sctp_init_chunk_t *); 979 extern uint32_t sctp_init2vtag(sctp_chunk_hdr_t *); 980 extern void sctp_intf_event(sctp_t *, in6_addr_t, int, int); 981 extern void sctp_input_data(sctp_t *, mblk_t *, ip_recv_attr_t *); 982 extern void sctp_instream_cleanup(sctp_t *, boolean_t); 983 extern int sctp_is_a_faddr_clean(sctp_t *); 984 985 extern void *sctp_kstat_init(netstackid_t); 986 extern void sctp_kstat_fini(netstackid_t, kstat_t *); 987 extern void *sctp_kstat2_init(netstackid_t, sctp_kstat_t *); 988 extern void sctp_kstat2_fini(netstackid_t, kstat_t *); 989 990 extern ssize_t sctp_link_abort(mblk_t *, uint16_t, char *, size_t, int, 991 boolean_t); 992 extern void sctp_listen_hash_insert(sctp_tf_t *, sctp_t *); 993 extern void sctp_listen_hash_remove(sctp_t *); 994 extern sctp_t *sctp_lookup(sctp_t *, in6_addr_t *, sctp_tf_t *, uint32_t *, 995 int); 996 extern sctp_faddr_t *sctp_lookup_faddr(sctp_t *, in6_addr_t *); 997 998 extern mblk_t *sctp_make_err(sctp_t *, uint16_t, void *, size_t); 999 extern mblk_t *sctp_make_ftsn_chunk(sctp_t *, sctp_faddr_t *, 1000 sctp_ftsn_set_t *, uint_t, uint32_t); 1001 extern void sctp_make_ftsns(sctp_t *, mblk_t *, mblk_t *, mblk_t **, 1002 sctp_faddr_t *, uint32_t *); 1003 extern mblk_t *sctp_make_mp(sctp_t *, sctp_faddr_t *, int); 1004 extern mblk_t *sctp_make_sack(sctp_t *, sctp_faddr_t *, mblk_t *); 1005 extern void sctp_maxpsz_set(sctp_t *); 1006 extern void sctp_move_faddr_timers(queue_t *, sctp_t *); 1007 1008 extern void sctp_nd_free(sctp_stack_t *); 1009 extern int sctp_nd_getset(queue_t *, MBLKP); 1010 extern boolean_t sctp_nd_init(sctp_stack_t *); 1011 extern sctp_parm_hdr_t *sctp_next_parm(sctp_parm_hdr_t *, ssize_t *); 1012 1013 extern void sctp_ootb_shutdown_ack(mblk_t *, uint_t, ip_recv_attr_t *, 1014 ip_stack_t *); 1015 extern size_t sctp_options_param(const sctp_t *, void *, int); 1016 extern size_t sctp_options_param_len(const sctp_t *, int); 1017 extern void sctp_output(sctp_t *, uint_t); 1018 1019 extern boolean_t sctp_param_register(IDP *, sctpparam_t *, int, sctp_stack_t *); 1020 extern void sctp_partial_delivery_event(sctp_t *); 1021 extern int sctp_process_cookie(sctp_t *, sctp_chunk_hdr_t *, mblk_t *, 1022 sctp_init_chunk_t **, sctp_hdr_t *, int *, in6_addr_t *, 1023 ip_recv_attr_t *); 1024 extern void sctp_process_err(sctp_t *); 1025 extern void sctp_process_heartbeat(sctp_t *, sctp_chunk_hdr_t *); 1026 extern void sctp_process_timer(sctp_t *); 1027 1028 extern void sctp_redo_faddr_srcs(sctp_t *); 1029 extern void sctp_regift_xmitlist(sctp_t *); 1030 extern void sctp_return_heartbeat(sctp_t *, sctp_chunk_hdr_t *, mblk_t *); 1031 extern void sctp_rexmit(sctp_t *, sctp_faddr_t *); 1032 extern mblk_t *sctp_rexmit_packet(sctp_t *, mblk_t **, mblk_t **, 1033 sctp_faddr_t *, uint_t *); 1034 extern void sctp_rexmit_timer(sctp_t *, sctp_faddr_t *); 1035 extern sctp_faddr_t *sctp_rotate_faddr(sctp_t *, sctp_faddr_t *); 1036 1037 extern boolean_t sctp_sack(sctp_t *, mblk_t *); 1038 extern int sctp_secure_restart_check(mblk_t *, sctp_chunk_hdr_t *, 1039 uint32_t, int, sctp_stack_t *, ip_recv_attr_t *); 1040 extern void sctp_send_abort(sctp_t *, uint32_t, uint16_t, char *, size_t, 1041 mblk_t *, int, boolean_t, ip_recv_attr_t *); 1042 extern void sctp_ootb_send_abort(uint32_t, uint16_t, char *, size_t, 1043 const mblk_t *, int, boolean_t, ip_recv_attr_t *, 1044 ip_stack_t *); 1045 extern void sctp_send_cookie_ack(sctp_t *); 1046 extern void sctp_send_cookie_echo(sctp_t *, sctp_chunk_hdr_t *, mblk_t *, 1047 ip_recv_attr_t *); 1048 extern void sctp_send_initack(sctp_t *, sctp_hdr_t *, sctp_chunk_hdr_t *, 1049 mblk_t *, ip_recv_attr_t *); 1050 extern void sctp_send_shutdown(sctp_t *, int); 1051 extern void sctp_send_heartbeat(sctp_t *, sctp_faddr_t *); 1052 extern void sctp_sendfail_event(sctp_t *, mblk_t *, int, boolean_t); 1053 extern void sctp_set_faddr_current(sctp_t *, sctp_faddr_t *); 1054 extern int sctp_set_hdraddrs(sctp_t *); 1055 extern void sctp_set_saddr(sctp_t *, sctp_faddr_t *); 1056 extern void sctp_sets_init(void); 1057 extern void sctp_sets_fini(void); 1058 extern void sctp_shutdown_event(sctp_t *); 1059 extern void sctp_stop_faddr_timers(sctp_t *); 1060 extern int sctp_shutdown_received(sctp_t *, sctp_chunk_hdr_t *, boolean_t, 1061 boolean_t, sctp_faddr_t *); 1062 extern void sctp_shutdown_complete(sctp_t *); 1063 extern void sctp_set_if_mtu(sctp_t *); 1064 extern void sctp_set_iplen(sctp_t *, mblk_t *, ip_xmit_attr_t *); 1065 extern void sctp_set_ulp_prop(sctp_t *); 1066 extern void sctp_ss_rexmit(sctp_t *); 1067 extern size_t sctp_supaddr_param_len(sctp_t *); 1068 extern size_t sctp_supaddr_param(sctp_t *, uchar_t *); 1069 1070 extern void sctp_timer(sctp_t *, mblk_t *, clock_t); 1071 extern mblk_t *sctp_timer_alloc(sctp_t *, pfv_t, int); 1072 extern void sctp_timer_call(sctp_t *sctp, mblk_t *); 1073 extern void sctp_timer_free(mblk_t *); 1074 extern void sctp_timer_stop(mblk_t *); 1075 extern void sctp_unlink_faddr(sctp_t *, sctp_faddr_t *); 1076 1077 extern void sctp_update_dce(sctp_t *sctp); 1078 extern in_port_t sctp_update_next_port(in_port_t, zone_t *zone, sctp_stack_t *); 1079 extern void sctp_update_rtt(sctp_t *, sctp_faddr_t *, clock_t); 1080 extern void sctp_user_abort(sctp_t *, mblk_t *); 1081 1082 extern void sctp_validate_peer(sctp_t *); 1083 1084 extern void sctp_wput_ioctl(queue_t *, mblk_t *); 1085 1086 extern int sctp_xmit_list_clean(sctp_t *, ssize_t); 1087 1088 extern void sctp_zap_addrs(sctp_t *); 1089 extern void sctp_zap_faddrs(sctp_t *, int); 1090 1091 /* Contract private interface between SCTP and Clustering - PSARC/2005/602 */ 1092 1093 extern void (*cl_sctp_listen)(sa_family_t, uchar_t *, uint_t, in_port_t); 1094 extern void (*cl_sctp_unlisten)(sa_family_t, uchar_t *, uint_t, in_port_t); 1095 extern void (*cl_sctp_connect)(sa_family_t, uchar_t *, uint_t, in_port_t, 1096 uchar_t *, uint_t, in_port_t, boolean_t, cl_sctp_handle_t); 1097 extern void (*cl_sctp_disconnect)(sa_family_t, cl_sctp_handle_t); 1098 extern void (*cl_sctp_assoc_change)(sa_family_t, uchar_t *, size_t, uint_t, 1099 uchar_t *, size_t, uint_t, int, cl_sctp_handle_t); 1100 extern void (*cl_sctp_check_addrs)(sa_family_t, in_port_t, uchar_t **, 1101 size_t, uint_t *, boolean_t); 1102 1103 #define RUN_SCTP(sctp) \ 1104 { \ 1105 mutex_enter(&(sctp)->sctp_lock); \ 1106 while ((sctp)->sctp_running) \ 1107 cv_wait(&(sctp)->sctp_cv, &(sctp)->sctp_lock); \ 1108 (sctp)->sctp_running = B_TRUE; \ 1109 mutex_exit(&(sctp)->sctp_lock); \ 1110 } 1111 1112 /* Wake up recvq taskq */ 1113 #define WAKE_SCTP(sctp) \ 1114 { \ 1115 mutex_enter(&(sctp)->sctp_lock); \ 1116 if ((sctp)->sctp_timer_mp != NULL) \ 1117 sctp_process_timer(sctp); \ 1118 (sctp)->sctp_running = B_FALSE; \ 1119 cv_broadcast(&(sctp)->sctp_cv); \ 1120 mutex_exit(&(sctp)->sctp_lock); \ 1121 } 1122 1123 #ifdef __cplusplus 1124 } 1125 #endif 1126 1127 #endif /* _INET_SCTP_SCTP_IMPL_H */ 1128
Indexes created Wed Feb 10 00:19:07 UTC 2010
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