1163953Srrs/*- 2185694Srrs * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved. 3235828Stuexen * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. 4235828Stuexen * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. 5163953Srrs * 6163953Srrs * Redistribution and use in source and binary forms, with or without 7163953Srrs * modification, are permitted provided that the following conditions are met: 8163953Srrs * 9163953Srrs * a) Redistributions of source code must retain the above copyright notice, 10228653Stuexen * this list of conditions and the following disclaimer. 11163953Srrs * 12163953Srrs * b) Redistributions in binary form must reproduce the above copyright 13163953Srrs * notice, this list of conditions and the following disclaimer in 14228653Stuexen * the documentation and/or other materials provided with the distribution. 15163953Srrs * 16163953Srrs * c) Neither the name of Cisco Systems, Inc. nor the names of its 17163953Srrs * contributors may be used to endorse or promote products derived 18163953Srrs * from this software without specific prior written permission. 19163953Srrs * 20163953Srrs * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21163953Srrs * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 22163953Srrs * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23163953Srrs * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 24163953Srrs * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25163953Srrs * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26163953Srrs * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27163953Srrs * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28163953Srrs * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29163953Srrs * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 30163953Srrs * THE POSSIBILITY OF SUCH DAMAGE. 31163953Srrs */ 32163953Srrs 33163953Srrs#include <sys/cdefs.h> 34163953Srrs__FBSDID("$FreeBSD$"); 35163953Srrs 36235828Stuexen#ifndef _NETINET_SCTP_STRUCTS_H_ 37235828Stuexen#define _NETINET_SCTP_STRUCTS_H_ 38163953Srrs 39165647Srrs#include <netinet/sctp_os.h> 40163953Srrs#include <netinet/sctp_header.h> 41163953Srrs#include <netinet/sctp_auth.h> 42163953Srrs 43163953Srrsstruct sctp_timer { 44165647Srrs sctp_os_timer_t timer; 45165647Srrs 46163953Srrs int type; 47163953Srrs /* 48163953Srrs * Depending on the timer type these will be setup and cast with the 49163953Srrs * appropriate entity. 50163953Srrs */ 51163953Srrs void *ep; 52163953Srrs void *tcb; 53163953Srrs void *net; 54197326Stuexen void *vnet; 55163953Srrs 56163953Srrs /* for sanity checking */ 57163953Srrs void *self; 58163953Srrs uint32_t ticks; 59165220Srrs uint32_t stopped_from; 60163953Srrs}; 61163953Srrs 62163953Srrs 63165220Srrsstruct sctp_foo_stuff { 64165220Srrs struct sctp_inpcb *inp; 65165220Srrs uint32_t lineno; 66165220Srrs uint32_t ticks; 67165220Srrs int updown; 68165220Srrs}; 69163953Srrs 70165220Srrs 71163953Srrs/* 72163953Srrs * This is the information we track on each interface that we know about from 73163953Srrs * the distant end. 74163953Srrs */ 75163953SrrsTAILQ_HEAD(sctpnetlisthead, sctp_nets); 76163953Srrs 77163953Srrsstruct sctp_stream_reset_list { 78163953Srrs TAILQ_ENTRY(sctp_stream_reset_list) next_resp; 79294140Stuexen uint32_t seq; 80163953Srrs uint32_t tsn; 81240198Stuexen uint32_t number_entries; 82240198Stuexen uint16_t list_of_streams[]; 83163953Srrs}; 84163953Srrs 85163953SrrsTAILQ_HEAD(sctp_resethead, sctp_stream_reset_list); 86163953Srrs 87163953Srrs/* 88163953Srrs * Users of the iterator need to malloc a iterator with a call to 89167598Srrs * sctp_initiate_iterator(inp_func, assoc_func, inp_func, pcb_flags, pcb_features, 90163953Srrs * asoc_state, void-ptr-arg, uint32-arg, end_func, inp); 91163953Srrs * 92163953Srrs * Use the following two defines if you don't care what pcb flags are on the EP 93163953Srrs * and/or you don't care what state the association is in. 94163953Srrs * 95163953Srrs * Note that if you specify an INP as the last argument then ONLY each 96163953Srrs * association of that single INP will be executed upon. Note that the pcb 97163953Srrs * flags STILL apply so if the inp you specify has different pcb_flags then 98163953Srrs * what you put in pcb_flags nothing will happen. use SCTP_PCB_ANY_FLAGS to 99163953Srrs * assure the inp you specify gets treated. 100163953Srrs */ 101163953Srrs#define SCTP_PCB_ANY_FLAGS 0x00000000 102163953Srrs#define SCTP_PCB_ANY_FEATURES 0x00000000 103163953Srrs#define SCTP_ASOC_ANY_STATE 0x00000000 104163953Srrs 105163953Srrstypedef void (*asoc_func) (struct sctp_inpcb *, struct sctp_tcb *, void *ptr, 106163953Srrs uint32_t val); 107167598Srrstypedef int (*inp_func) (struct sctp_inpcb *, void *ptr, uint32_t val); 108163953Srrstypedef void (*end_func) (void *ptr, uint32_t val); 109163953Srrs 110218211Srrs#if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP) 111218211Srrs/* whats on the mcore control struct */ 112218211Srrsstruct sctp_mcore_queue { 113218211Srrs TAILQ_ENTRY(sctp_mcore_queue) next; 114218211Srrs struct vnet *vn; 115218211Srrs struct mbuf *m; 116218211Srrs int off; 117218211Srrs int v6; 118218211Srrs}; 119218211Srrs 120218211SrrsTAILQ_HEAD(sctp_mcore_qhead, sctp_mcore_queue); 121218211Srrs 122218211Srrsstruct sctp_mcore_ctrl { 123218211Srrs SCTP_PROCESS_STRUCT thread_proc; 124218211Srrs struct sctp_mcore_qhead que; 125218211Srrs struct mtx core_mtx; 126218211Srrs struct mtx que_mtx; 127218211Srrs int running; 128218211Srrs int cpuid; 129218211Srrs}; 130218211Srrs 131218211Srrs 132218211Srrs#endif 133218211Srrs 134218211Srrs 135163953Srrsstruct sctp_iterator { 136167598Srrs TAILQ_ENTRY(sctp_iterator) sctp_nxt_itr; 137208160Srrs struct vnet *vn; 138163953Srrs struct sctp_timer tmr; 139163953Srrs struct sctp_inpcb *inp; /* current endpoint */ 140163953Srrs struct sctp_tcb *stcb; /* current* assoc */ 141208160Srrs struct sctp_inpcb *next_inp; /* special hook to skip to */ 142163953Srrs asoc_func function_assoc; /* per assoc function */ 143163953Srrs inp_func function_inp; /* per endpoint function */ 144167598Srrs inp_func function_inp_end; /* end INP function */ 145163953Srrs end_func function_atend;/* iterator completion function */ 146163953Srrs void *pointer; /* pointer for apply func to use */ 147163953Srrs uint32_t val; /* value for apply func to use */ 148163953Srrs uint32_t pcb_flags; /* endpoint flags being checked */ 149163953Srrs uint32_t pcb_features; /* endpoint features being checked */ 150163953Srrs uint32_t asoc_state; /* assoc state being checked */ 151163953Srrs uint32_t iterator_flags; 152163953Srrs uint8_t no_chunk_output; 153167598Srrs uint8_t done_current_ep; 154163953Srrs}; 155163953Srrs 156163953Srrs/* iterator_flags values */ 157163953Srrs#define SCTP_ITERATOR_DO_ALL_INP 0x00000001 158163953Srrs#define SCTP_ITERATOR_DO_SINGLE_INP 0x00000002 159163953Srrs 160208160Srrs 161167598SrrsTAILQ_HEAD(sctpiterators, sctp_iterator); 162163953Srrs 163163953Srrsstruct sctp_copy_all { 164163953Srrs struct sctp_inpcb *inp; /* ep */ 165163953Srrs struct mbuf *m; 166163953Srrs struct sctp_sndrcvinfo sndrcv; 167163953Srrs int sndlen; 168163953Srrs int cnt_sent; 169163953Srrs int cnt_failed; 170163953Srrs}; 171163953Srrs 172167598Srrsstruct sctp_asconf_iterator { 173167598Srrs struct sctpladdr list_of_work; 174167598Srrs int cnt; 175167598Srrs}; 176167598Srrs 177208160Srrsstruct iterator_control { 178208160Srrs struct mtx ipi_iterator_wq_mtx; 179208160Srrs struct mtx it_mtx; 180208160Srrs SCTP_PROCESS_STRUCT thread_proc; 181208160Srrs struct sctpiterators iteratorhead; 182208160Srrs struct sctp_iterator *cur_it; 183208160Srrs uint32_t iterator_running; 184208160Srrs uint32_t iterator_flags; 185208160Srrs}; 186208160Srrs 187225676Stuexen#define SCTP_ITERATOR_STOP_CUR_IT 0x00000004 188225676Stuexen#define SCTP_ITERATOR_STOP_CUR_INP 0x00000008 189208160Srrs 190169352Srrsstruct sctp_net_route { 191169352Srrs sctp_rtentry_t *ro_rt; 192191117Skmacy void *ro_lle; 193226222Stuexen void *ro_ia; 194226222Stuexen int ro_flags; 195169352Srrs union sctp_sockstore _l_addr; /* remote peer addr */ 196169352Srrs struct sctp_ifa *_s_addr; /* our selected src addr */ 197169352Srrs}; 198169352Srrs 199171440Srrsstruct htcp { 200171440Srrs uint16_t alpha; /* Fixed point arith, << 7 */ 201171440Srrs uint8_t beta; /* Fixed point arith, << 7 */ 202171440Srrs uint8_t modeswitch; /* Delay modeswitch until we had at least one 203171440Srrs * congestion event */ 204171440Srrs uint32_t last_cong; /* Time since last congestion event end */ 205171440Srrs uint32_t undo_last_cong; 206171440Srrs uint16_t bytes_acked; 207171440Srrs uint32_t bytecount; 208171440Srrs uint32_t minRTT; 209171440Srrs uint32_t maxRTT; 210171440Srrs 211171440Srrs uint32_t undo_maxRTT; 212171440Srrs uint32_t undo_old_maxB; 213171440Srrs 214171440Srrs /* Bandwidth estimation */ 215171440Srrs uint32_t minB; 216171440Srrs uint32_t maxB; 217171440Srrs uint32_t old_maxB; 218171440Srrs uint32_t Bi; 219171440Srrs uint32_t lasttime; 220171440Srrs}; 221171440Srrs 222219120Srrsstruct rtcc_cc { 223219120Srrs struct timeval tls; /* The time we started the sending */ 224219120Srrs uint64_t lbw; /* Our last estimated bw */ 225219120Srrs uint64_t lbw_rtt; /* RTT at bw estimate */ 226219120Srrs uint64_t bw_bytes; /* The total bytes since this sending began */ 227219120Srrs uint64_t bw_tot_time; /* The total time since sending began */ 228219120Srrs uint64_t new_tot_time; /* temp holding the new value */ 229219397Srrs uint64_t bw_bytes_at_last_rttc; /* What bw_bytes was at last rtt calc */ 230219397Srrs uint32_t cwnd_at_bw_set;/* Cwnd at last bw saved - lbw */ 231219397Srrs uint32_t vol_reduce; /* cnt of voluntary reductions */ 232219397Srrs uint16_t steady_step; /* The number required to be in steady state */ 233219397Srrs uint16_t step_cnt; /* The current number */ 234219397Srrs uint8_t ret_from_eq; /* When all things are equal what do I return 235219397Srrs * 0/1 - 1 no cc advance */ 236219397Srrs uint8_t use_dccc_ecn; /* Flag to enable DCCC ECN */ 237219120Srrs uint8_t tls_needs_set; /* Flag to indicate we need to set tls 0 or 1 238219120Srrs * means set at send 2 not */ 239219397Srrs uint8_t last_step_state;/* Last state if steady state stepdown is on */ 240219397Srrs uint8_t rtt_set_this_sack; /* Flag saying this sack had RTT calc 241219397Srrs * on it */ 242219397Srrs uint8_t last_inst_ind; /* Last saved inst indication */ 243219120Srrs}; 244219120Srrs 245219120Srrs 246163953Srrsstruct sctp_nets { 247163953Srrs TAILQ_ENTRY(sctp_nets) sctp_next; /* next link */ 248163953Srrs 249163953Srrs /* 250163953Srrs * Things on the top half may be able to be split into a common 251163953Srrs * structure shared by all. 252163953Srrs */ 253163953Srrs struct sctp_timer pmtu_timer; 254224641Stuexen struct sctp_timer hb_timer; 255163953Srrs 256163953Srrs /* 257163953Srrs * The following two in combination equate to a route entry for v6 258163953Srrs * or v4. 259163953Srrs */ 260169352Srrs struct sctp_net_route ro; 261169352Srrs 262163953Srrs /* mtu discovered so far */ 263163953Srrs uint32_t mtu; 264163953Srrs uint32_t ssthresh; /* not sure about this one for split */ 265218072Srrs uint32_t last_cwr_tsn; 266218072Srrs uint32_t cwr_window_tsn; 267218072Srrs uint32_t ecn_ce_pkt_cnt; 268218072Srrs uint32_t lost_cnt; 269163953Srrs /* smoothed average things for RTT and RTO itself */ 270163953Srrs int lastsa; 271163953Srrs int lastsv; 272219013Stuexen uint64_t rtt; /* last measured rtt value in us */ 273163953Srrs unsigned int RTO; 274163953Srrs 275163953Srrs /* This is used for SHUTDOWN/SHUTDOWN-ACK/SEND or INIT timers */ 276163953Srrs struct sctp_timer rxt_timer; 277163953Srrs 278163953Srrs /* last time in seconds I sent to it */ 279163953Srrs struct timeval last_sent_time; 280219057Srrs union cc_control_data { 281219057Srrs struct htcp htcp_ca; /* JRS - struct used in HTCP algorithm */ 282219120Srrs struct rtcc_cc rtcc; /* rtcc module cc stuff */ 283219057Srrs } cc_mod; 284163953Srrs int ref_count; 285163953Srrs 286163953Srrs /* Congestion stats per destination */ 287163953Srrs /* 288163953Srrs * flight size variables and such, sorry Vern, I could not avoid 289163953Srrs * this if I wanted performance :> 290163953Srrs */ 291163953Srrs uint32_t flight_size; 292163953Srrs uint32_t cwnd; /* actual cwnd */ 293163953Srrs uint32_t prev_cwnd; /* cwnd before any processing */ 294218186Srrs uint32_t ecn_prev_cwnd; /* ECN prev cwnd at first ecn_echo seen in new 295218186Srrs * window */ 296163953Srrs uint32_t partial_bytes_acked; /* in CA tracks when to incr a MTU */ 297163953Srrs /* tracking variables to avoid the aloc/free in sack processing */ 298163953Srrs unsigned int net_ack; 299163953Srrs unsigned int net_ack2; 300163953Srrs 301163953Srrs /* 302171440Srrs * JRS - 5/8/07 - Variable to track last time a destination was 303171440Srrs * active for CMT PF 304171440Srrs */ 305171440Srrs uint32_t last_active; 306171440Srrs 307171440Srrs /* 308163953Srrs * CMT variables (iyengar@cis.udel.edu) 309163953Srrs */ 310163953Srrs uint32_t this_sack_highest_newack; /* tracks highest TSN newly 311163953Srrs * acked for a given dest in 312163953Srrs * the current SACK. Used in 313163953Srrs * SFR and HTNA algos */ 314163953Srrs uint32_t pseudo_cumack; /* CMT CUC algorithm. Maintains next expected 315163953Srrs * pseudo-cumack for this destination */ 316163953Srrs uint32_t rtx_pseudo_cumack; /* CMT CUC algorithm. Maintains next 317163953Srrs * expected pseudo-cumack for this 318163953Srrs * destination */ 319163953Srrs 320163953Srrs /* CMT fast recovery variables */ 321163953Srrs uint32_t fast_recovery_tsn; 322163953Srrs uint32_t heartbeat_random1; 323163953Srrs uint32_t heartbeat_random2; 324225549Stuexen#ifdef INET6 325224870Stuexen uint32_t flowlabel; 326225549Stuexen#endif 327224870Stuexen uint8_t dscp; 328163953Srrs 329168124Srrs struct timeval start_time; /* time when this net was created */ 330168124Srrs uint32_t marked_retrans;/* number or DATA chunks marked for timer 331168124Srrs * based retransmissions */ 332168124Srrs uint32_t marked_fastretrans; 333224641Stuexen uint32_t heart_beat_delay; /* Heart Beat delay in ms */ 334168124Srrs 335163953Srrs /* if this guy is ok or not ... status */ 336163953Srrs uint16_t dest_state; 337224641Stuexen /* number of timeouts to consider the destination unreachable */ 338163953Srrs uint16_t failure_threshold; 339224641Stuexen /* number of timeouts to consider the destination potentially failed */ 340224641Stuexen uint16_t pf_threshold; 341224641Stuexen /* error stats on the destination */ 342163953Srrs uint16_t error_count; 343179157Srrs /* UDP port number in case of UDP tunneling */ 344179157Srrs uint16_t port; 345163953Srrs 346163953Srrs uint8_t fast_retran_loss_recovery; 347163953Srrs uint8_t will_exit_fast_recovery; 348163953Srrs /* Flags that probably can be combined into dest_state */ 349163953Srrs uint8_t fast_retran_ip; /* fast retransmit in progress */ 350163953Srrs uint8_t hb_responded; 351163953Srrs uint8_t saw_newack; /* CMT's SFR algorithm flag */ 352163953Srrs uint8_t src_addr_selected; /* if we split we move */ 353163953Srrs uint8_t indx_of_eligible_next_to_use; 354163953Srrs uint8_t addr_is_local; /* its a local address (if known) could move 355163953Srrs * in split */ 356163953Srrs 357163953Srrs /* 358163953Srrs * CMT variables (iyengar@cis.udel.edu) 359163953Srrs */ 360163953Srrs uint8_t find_pseudo_cumack; /* CMT CUC algorithm. Flag used to 361163953Srrs * find a new pseudocumack. This flag 362163953Srrs * is set after a new pseudo-cumack 363163953Srrs * has been received and indicates 364163953Srrs * that the sender should find the 365163953Srrs * next pseudo-cumack expected for 366163953Srrs * this destination */ 367163953Srrs uint8_t find_rtx_pseudo_cumack; /* CMT CUCv2 algorithm. Flag used to 368163953Srrs * find a new rtx-pseudocumack. This 369163953Srrs * flag is set after a new 370163953Srrs * rtx-pseudo-cumack has been received 371163953Srrs * and indicates that the sender 372163953Srrs * should find the next 373163953Srrs * rtx-pseudo-cumack expected for this 374163953Srrs * destination */ 375163953Srrs uint8_t new_pseudo_cumack; /* CMT CUC algorithm. Flag used to 376163953Srrs * indicate if a new pseudo-cumack or 377163953Srrs * rtx-pseudo-cumack has been received */ 378168124Srrs uint8_t window_probe; /* Doing a window probe? */ 379170642Srrs uint8_t RTO_measured; /* Have we done the first measure */ 380163953Srrs uint8_t last_hs_used; /* index into the last HS table entry we used */ 381218186Srrs uint8_t lan_type; 382219397Srrs uint8_t rto_needed; 383218335Stuexen uint32_t flowid; 384281955Shiren uint8_t flowtype; 385163953Srrs}; 386163953Srrs 387163953Srrs 388163953Srrsstruct sctp_data_chunkrec { 389163953Srrs uint32_t TSN_seq; /* the TSN of this transmit */ 390163953Srrs uint16_t stream_seq; /* the stream sequence number of this transmit */ 391163953Srrs uint16_t stream_number; /* the stream number of this guy */ 392163953Srrs uint32_t payloadtype; 393163953Srrs uint32_t context; /* from send */ 394218186Srrs uint32_t cwnd_at_send; 395163953Srrs /* 396163953Srrs * part of the Highest sacked algorithm to be able to stroke counts 397163953Srrs * on ones that are FR'd. 398163953Srrs */ 399163953Srrs uint32_t fast_retran_tsn; /* sending_seq at the time of FR */ 400163953Srrs struct timeval timetodrop; /* time we drop it from queue */ 401163953Srrs uint8_t doing_fast_retransmit; 402163953Srrs uint8_t rcv_flags; /* flags pulled from data chunk on inbound for 403165220Srrs * outbound holds sending flags for PR-SCTP. */ 404163953Srrs uint8_t state_flags; 405163953Srrs uint8_t chunk_was_revoked; 406218186Srrs uint8_t fwd_tsn_cnt; 407163953Srrs}; 408163953Srrs 409163953SrrsTAILQ_HEAD(sctpchunk_listhead, sctp_tmit_chunk); 410163953Srrs 411163953Srrs/* The lower byte is used to enumerate PR_SCTP policies */ 412163953Srrs#define CHUNK_FLAGS_PR_SCTP_TTL SCTP_PR_SCTP_TTL 413163953Srrs#define CHUNK_FLAGS_PR_SCTP_BUF SCTP_PR_SCTP_BUF 414163953Srrs#define CHUNK_FLAGS_PR_SCTP_RTX SCTP_PR_SCTP_RTX 415163953Srrs 416231074Stuexen/* The upper byte is used as a bit mask */ 417163953Srrs#define CHUNK_FLAGS_FRAGMENT_OK 0x0100 418163953Srrs 419163953Srrsstruct chk_id { 420271750Stuexen uint8_t id; 421271750Stuexen uint8_t can_take_data; 422163953Srrs}; 423163953Srrs 424163953Srrs 425163953Srrsstruct sctp_tmit_chunk { 426163953Srrs union { 427163953Srrs struct sctp_data_chunkrec data; 428163953Srrs struct chk_id chunk_id; 429163953Srrs } rec; 430163953Srrs struct sctp_association *asoc; /* bp to asoc this belongs to */ 431163953Srrs struct timeval sent_rcv_time; /* filled in if RTT being calculated */ 432163953Srrs struct mbuf *data; /* pointer to mbuf chain of data */ 433163953Srrs struct mbuf *last_mbuf; /* pointer to last mbuf in chain */ 434163953Srrs struct sctp_nets *whoTo; 435163953Srrs TAILQ_ENTRY(sctp_tmit_chunk) sctp_next; /* next link */ 436163953Srrs int32_t sent; /* the send status */ 437163953Srrs uint16_t snd_count; /* number of times I sent */ 438163953Srrs uint16_t flags; /* flags, such as FRAGMENT_OK */ 439163953Srrs uint16_t send_size; 440163953Srrs uint16_t book_size; 441163953Srrs uint16_t mbcnt; 442185694Srrs uint16_t auth_keyid; 443185694Srrs uint8_t holds_key_ref; /* flag if auth keyid refcount is held */ 444163953Srrs uint8_t pad_inplace; 445163953Srrs uint8_t do_rtt; 446163953Srrs uint8_t book_size_scale; 447163953Srrs uint8_t no_fr_allowed; 448163953Srrs uint8_t copy_by_ref; 449168124Srrs uint8_t window_probe; 450163953Srrs}; 451163953Srrs 452163953Srrs/* 453163953Srrs * The first part of this structure MUST be the entire sinfo structure. Maybe 454163953Srrs * I should have made it a sub structure... we can circle back later and do 455163953Srrs * that if we want. 456163953Srrs */ 457163953Srrsstruct sctp_queued_to_read { /* sinfo structure Pluse more */ 458163953Srrs uint16_t sinfo_stream; /* off the wire */ 459163953Srrs uint16_t sinfo_ssn; /* off the wire */ 460163953Srrs uint16_t sinfo_flags; /* SCTP_UNORDERED from wire use SCTP_EOF for 461163953Srrs * EOR */ 462163953Srrs uint32_t sinfo_ppid; /* off the wire */ 463163953Srrs uint32_t sinfo_context; /* pick this up from assoc def context? */ 464163953Srrs uint32_t sinfo_timetolive; /* not used by kernel */ 465163953Srrs uint32_t sinfo_tsn; /* Use this in reassembly as first TSN */ 466163953Srrs uint32_t sinfo_cumtsn; /* Use this in reassembly as last TSN */ 467163953Srrs sctp_assoc_t sinfo_assoc_id; /* our assoc id */ 468163953Srrs /* Non sinfo stuff */ 469163953Srrs uint32_t length; /* length of data */ 470163953Srrs uint32_t held_length; /* length held in sb */ 471163953Srrs struct sctp_nets *whoFrom; /* where it came from */ 472163953Srrs struct mbuf *data; /* front of the mbuf chain of data with 473163953Srrs * PKT_HDR */ 474163953Srrs struct mbuf *tail_mbuf; /* used for multi-part data */ 475169352Srrs struct mbuf *aux_data; /* used to hold/cache control if o/s does not 476169352Srrs * take it from us */ 477163953Srrs struct sctp_tcb *stcb; /* assoc, used for window update */ 478163953Srrs TAILQ_ENTRY(sctp_queued_to_read) next; 479163953Srrs uint16_t port_from; 480165647Srrs uint16_t spec_flags; /* Flags to hold the notification field */ 481163953Srrs uint8_t do_not_ref_stcb; 482163953Srrs uint8_t end_added; 483164085Srrs uint8_t pdapi_aborted; 484168943Srrs uint8_t some_taken; 485163953Srrs}; 486163953Srrs 487163953Srrs/* This data structure will be on the outbound 488163953Srrs * stream queues. Data will be pulled off from 489163953Srrs * the front of the mbuf data and chunk-ified 490163953Srrs * by the output routines. We will custom 491163953Srrs * fit every chunk we pull to the send/sent 492163953Srrs * queue to make up the next full packet 493163953Srrs * if we can. An entry cannot be removed 494163953Srrs * from the stream_out queue until 495163953Srrs * the msg_is_complete flag is set. This 496163953Srrs * means at times data/tail_mbuf MIGHT 497163953Srrs * be NULL.. If that occurs it happens 498163953Srrs * for one of two reasons. Either the user 499163953Srrs * is blocked on a send() call and has not 500163953Srrs * awoken to copy more data down... OR 501163953Srrs * the user is in the explict MSG_EOR mode 502163953Srrs * and wrote some data, but has not completed 503163953Srrs * sending. 504163953Srrs */ 505163953Srrsstruct sctp_stream_queue_pending { 506163953Srrs struct mbuf *data; 507163953Srrs struct mbuf *tail_mbuf; 508163953Srrs struct timeval ts; 509163953Srrs struct sctp_nets *net; 510163953Srrs TAILQ_ENTRY(sctp_stream_queue_pending) next; 511218241Stuexen TAILQ_ENTRY(sctp_stream_queue_pending) ss_next; 512163953Srrs uint32_t length; 513163953Srrs uint32_t timetolive; 514163953Srrs uint32_t ppid; 515163953Srrs uint32_t context; 516163953Srrs uint16_t sinfo_flags; 517163953Srrs uint16_t stream; 518165220Srrs uint16_t act_flags; 519185694Srrs uint16_t auth_keyid; 520185694Srrs uint8_t holds_key_ref; 521163953Srrs uint8_t msg_is_complete; 522163953Srrs uint8_t some_taken; 523168755Srrs uint8_t sender_all_done; 524168859Srrs uint8_t put_last_out; 525189836Srrs uint8_t discard_rest; 526163953Srrs}; 527163953Srrs 528163953Srrs/* 529163953Srrs * this struct contains info that is used to track inbound stream data and 530163953Srrs * help with ordering. 531163953Srrs */ 532163953SrrsTAILQ_HEAD(sctpwheelunrel_listhead, sctp_stream_in); 533163953Srrsstruct sctp_stream_in { 534163953Srrs struct sctp_readhead inqueue; 535163953Srrs uint16_t stream_no; 536163953Srrs uint16_t last_sequence_delivered; /* used for re-order */ 537168943Srrs uint8_t delivery_started; 538163953Srrs}; 539163953Srrs 540217760StuexenTAILQ_HEAD(sctpwheel_listhead, sctp_stream_out); 541217760StuexenTAILQ_HEAD(sctplist_listhead, sctp_stream_queue_pending); 542217760Stuexen 543217760Stuexen/* Round-robin schedulers */ 544217760Stuexenstruct ss_rr { 545217760Stuexen /* next link in wheel */ 546217760Stuexen TAILQ_ENTRY(sctp_stream_out) next_spoke; 547217760Stuexen}; 548217760Stuexen 549217760Stuexen/* Priority scheduler */ 550217760Stuexenstruct ss_prio { 551217760Stuexen /* next link in wheel */ 552217760Stuexen TAILQ_ENTRY(sctp_stream_out) next_spoke; 553217760Stuexen /* priority id */ 554217760Stuexen uint16_t priority; 555217760Stuexen}; 556217760Stuexen 557217760Stuexen/* Fair Bandwidth scheduler */ 558217760Stuexenstruct ss_fb { 559217760Stuexen /* next link in wheel */ 560217760Stuexen TAILQ_ENTRY(sctp_stream_out) next_spoke; 561217760Stuexen /* stores message size */ 562217760Stuexen int32_t rounds; 563217760Stuexen}; 564217760Stuexen 565217760Stuexen/* 566217760Stuexen * This union holds all data necessary for 567217760Stuexen * different stream schedulers. 568217760Stuexen */ 569217760Stuexenunion scheduling_data { 570217760Stuexen struct sctpwheel_listhead out_wheel; 571217760Stuexen struct sctplist_listhead out_list; 572217760Stuexen}; 573217760Stuexen 574217760Stuexen/* 575217760Stuexen * This union holds all parameters per stream 576217760Stuexen * necessary for different stream schedulers. 577217760Stuexen */ 578217760Stuexenunion scheduling_parameters { 579217760Stuexen struct ss_rr rr; 580217760Stuexen struct ss_prio prio; 581217760Stuexen struct ss_fb fb; 582217760Stuexen}; 583217760Stuexen 584294140Stuexen/* States for outgoing streams */ 585294140Stuexen#define SCTP_STREAM_CLOSED 0x00 586294140Stuexen#define SCTP_STREAM_OPENING 0x01 587294140Stuexen#define SCTP_STREAM_OPEN 0x02 588294140Stuexen#define SCTP_STREAM_RESET_PENDING 0x03 589294140Stuexen#define SCTP_STREAM_RESET_IN_FLIGHT 0x04 590294140Stuexen 591294140Stuexen#define SCTP_MAX_STREAMS_AT_ONCE_RESET 200 592294140Stuexen 593163953Srrs/* This struct is used to track the traffic on outbound streams */ 594163953Srrsstruct sctp_stream_out { 595163953Srrs struct sctp_streamhead outqueue; 596217760Stuexen union scheduling_parameters ss_params; 597294140Stuexen uint32_t chunks_on_queues; /* send queue and sent queue */ 598270363Stuexen#if defined(SCTP_DETAILED_STR_STATS) 599270363Stuexen uint32_t abandoned_unsent[SCTP_PR_SCTP_MAX + 1]; 600270363Stuexen uint32_t abandoned_sent[SCTP_PR_SCTP_MAX + 1]; 601270363Stuexen#else 602270363Stuexen /* Only the aggregation */ 603270363Stuexen uint32_t abandoned_unsent[1]; 604270363Stuexen uint32_t abandoned_sent[1]; 605270363Stuexen#endif 606163953Srrs uint16_t stream_no; 607242627Stuexen uint16_t next_sequence_send; /* next one I expect to send out */ 608163953Srrs uint8_t last_msg_incomplete; 609294140Stuexen uint8_t state; 610163953Srrs}; 611163953Srrs 612163953Srrs/* used to keep track of the addresses yet to try to add/delete */ 613163953SrrsTAILQ_HEAD(sctp_asconf_addrhead, sctp_asconf_addr); 614163953Srrsstruct sctp_asconf_addr { 615163953Srrs TAILQ_ENTRY(sctp_asconf_addr) next; 616163953Srrs struct sctp_asconf_addr_param ap; 617167598Srrs struct sctp_ifa *ifa; /* save the ifa for add/del ip */ 618163953Srrs uint8_t sent; /* has this been sent yet? */ 619185694Srrs uint8_t special_del; /* not to be used in lookup */ 620163953Srrs}; 621163953Srrs 622163953Srrsstruct sctp_scoping { 623163953Srrs uint8_t ipv4_addr_legal; 624163953Srrs uint8_t ipv6_addr_legal; 625163953Srrs uint8_t loopback_scope; 626163953Srrs uint8_t ipv4_local_scope; 627163953Srrs uint8_t local_scope; 628163953Srrs uint8_t site_scope; 629163953Srrs}; 630163953Srrs 631166675Srrs#define SCTP_TSN_LOG_SIZE 40 632166675Srrs 633166675Srrsstruct sctp_tsn_log { 634171477Srrs void *stcb; 635166675Srrs uint32_t tsn; 636166675Srrs uint16_t strm; 637166675Srrs uint16_t seq; 638168859Srrs uint16_t sz; 639168859Srrs uint16_t flgs; 640171477Srrs uint16_t in_pos; 641171477Srrs uint16_t in_out; 642166675Srrs}; 643166675Srrs 644171440Srrs#define SCTP_FS_SPEC_LOG_SIZE 200 645171440Srrsstruct sctp_fs_spec_log { 646171440Srrs uint32_t sent; 647171440Srrs uint32_t total_flight; 648171440Srrs uint32_t tsn; 649171440Srrs uint16_t book; 650171440Srrs uint8_t incr; 651171440Srrs uint8_t decr; 652171440Srrs}; 653170056Srrs 654170056Srrs/* This struct is here to cut out the compatiabilty 655170056Srrs * pad that bulks up both the inp and stcb. The non 656170056Srrs * pad portion MUST stay in complete sync with 657170056Srrs * sctp_sndrcvinfo... i.e. if sinfo_xxxx is added 658170056Srrs * this must be done here too. 659170056Srrs */ 660170056Srrsstruct sctp_nonpad_sndrcvinfo { 661170056Srrs uint16_t sinfo_stream; 662170056Srrs uint16_t sinfo_ssn; 663170056Srrs uint16_t sinfo_flags; 664170056Srrs uint32_t sinfo_ppid; 665170056Srrs uint32_t sinfo_context; 666170056Srrs uint32_t sinfo_timetolive; 667170056Srrs uint32_t sinfo_tsn; 668170056Srrs uint32_t sinfo_cumtsn; 669170056Srrs sctp_assoc_t sinfo_assoc_id; 670223132Stuexen uint16_t sinfo_keynumber; 671223132Stuexen uint16_t sinfo_keynumber_valid; 672170056Srrs}; 673170056Srrs 674163953Srrs/* 675171440Srrs * JRS - Structure to hold function pointers to the functions responsible 676171440Srrs * for congestion control. 677171440Srrs */ 678171440Srrs 679171440Srrsstruct sctp_cc_functions { 680171440Srrs void (*sctp_set_initial_cc_param) (struct sctp_tcb *stcb, struct sctp_nets *net); 681171440Srrs void (*sctp_cwnd_update_after_sack) (struct sctp_tcb *stcb, 682171440Srrs struct sctp_association *asoc, 683171440Srrs int accum_moved, int reneged_all, int will_exit); 684224641Stuexen void (*sctp_cwnd_update_exit_pf) (struct sctp_tcb *stcb, struct sctp_nets *net); 685171440Srrs void (*sctp_cwnd_update_after_fr) (struct sctp_tcb *stcb, 686171440Srrs struct sctp_association *asoc); 687171440Srrs void (*sctp_cwnd_update_after_timeout) (struct sctp_tcb *stcb, 688171440Srrs struct sctp_nets *net); 689171440Srrs void (*sctp_cwnd_update_after_ecn_echo) (struct sctp_tcb *stcb, 690218129Srrs struct sctp_nets *net, int in_window, int num_pkt_lost); 691171440Srrs void (*sctp_cwnd_update_after_packet_dropped) (struct sctp_tcb *stcb, 692171440Srrs struct sctp_nets *net, struct sctp_pktdrop_chunk *cp, 693171440Srrs uint32_t * bottle_bw, uint32_t * on_queue); 694171440Srrs void (*sctp_cwnd_update_after_output) (struct sctp_tcb *stcb, 695171440Srrs struct sctp_nets *net, int burst_limit); 696219057Srrs void (*sctp_cwnd_update_packet_transmitted) (struct sctp_tcb *stcb, 697219057Srrs struct sctp_nets *net); 698219057Srrs void (*sctp_cwnd_update_tsn_acknowledged) (struct sctp_nets *net, 699219057Srrs struct sctp_tmit_chunk *); 700219057Srrs void (*sctp_cwnd_new_transmission_begins) (struct sctp_tcb *stcb, 701219057Srrs struct sctp_nets *net); 702219057Srrs void (*sctp_cwnd_prepare_net_for_sack) (struct sctp_tcb *stcb, 703219057Srrs struct sctp_nets *net); 704219057Srrs int (*sctp_cwnd_socket_option) (struct sctp_tcb *stcb, int set, struct sctp_cc_option *); 705219397Srrs void (*sctp_rtt_calculated) (struct sctp_tcb *, struct sctp_nets *, struct timeval *); 706171440Srrs}; 707171440Srrs 708217760Stuexen/* 709217760Stuexen * RS - Structure to hold function pointers to the functions responsible 710217760Stuexen * for stream scheduling. 711217760Stuexen */ 712217760Stuexenstruct sctp_ss_functions { 713217760Stuexen void (*sctp_ss_init) (struct sctp_tcb *stcb, struct sctp_association *asoc, 714217760Stuexen int holds_lock); 715217760Stuexen void (*sctp_ss_clear) (struct sctp_tcb *stcb, struct sctp_association *asoc, 716217760Stuexen int clear_values, int holds_lock); 717218241Stuexen void (*sctp_ss_init_stream) (struct sctp_stream_out *strq, struct sctp_stream_out *with_strq); 718217760Stuexen void (*sctp_ss_add_to_stream) (struct sctp_tcb *stcb, struct sctp_association *asoc, 719217760Stuexen struct sctp_stream_out *strq, struct sctp_stream_queue_pending *sp, int holds_lock); 720217760Stuexen int (*sctp_ss_is_empty) (struct sctp_tcb *stcb, struct sctp_association *asoc); 721217760Stuexen void (*sctp_ss_remove_from_stream) (struct sctp_tcb *stcb, struct sctp_association *asoc, 722217760Stuexen struct sctp_stream_out *strq, struct sctp_stream_queue_pending *sp, int holds_lock); 723217760Stuexen struct sctp_stream_out *(*sctp_ss_select_stream) (struct sctp_tcb *stcb, 724217760Stuexen struct sctp_nets *net, struct sctp_association *asoc); 725217760Stuexen void (*sctp_ss_scheduled) (struct sctp_tcb *stcb, struct sctp_nets *net, 726217760Stuexen struct sctp_association *asoc, struct sctp_stream_out *strq, int moved_how_much); 727217760Stuexen void (*sctp_ss_packet_done) (struct sctp_tcb *stcb, struct sctp_nets *net, 728217760Stuexen struct sctp_association *asoc); 729217760Stuexen int (*sctp_ss_get_value) (struct sctp_tcb *stcb, struct sctp_association *asoc, 730217760Stuexen struct sctp_stream_out *strq, uint16_t * value); 731217760Stuexen int (*sctp_ss_set_value) (struct sctp_tcb *stcb, struct sctp_association *asoc, 732217760Stuexen struct sctp_stream_out *strq, uint16_t value); 733217760Stuexen}; 734217760Stuexen 735179157Srrs/* used to save ASCONF chunks for retransmission */ 736179157SrrsTAILQ_HEAD(sctp_asconf_head, sctp_asconf); 737179157Srrsstruct sctp_asconf { 738179157Srrs TAILQ_ENTRY(sctp_asconf) next; 739179157Srrs uint32_t serial_number; 740179157Srrs uint16_t snd_count; 741179157Srrs struct mbuf *data; 742179157Srrs uint16_t len; 743179157Srrs}; 744179157Srrs 745171990Srrs/* used to save ASCONF-ACK chunks for retransmission */ 746171990SrrsTAILQ_HEAD(sctp_asconf_ackhead, sctp_asconf_ack); 747171990Srrsstruct sctp_asconf_ack { 748171990Srrs TAILQ_ENTRY(sctp_asconf_ack) next; 749171990Srrs uint32_t serial_number; 750171990Srrs struct sctp_nets *last_sent_to; 751171990Srrs struct mbuf *data; 752171990Srrs uint16_t len; 753171990Srrs}; 754171990Srrs 755171440Srrs/* 756163953Srrs * Here we have information about each individual association that we track. 757163953Srrs * We probably in production would be more dynamic. But for ease of 758163953Srrs * implementation we will have a fixed array that we hunt for in a linear 759163953Srrs * fashion. 760163953Srrs */ 761163953Srrsstruct sctp_association { 762163953Srrs /* association state */ 763163953Srrs int state; 764171572Srrs 765163953Srrs /* queue of pending addrs to add/delete */ 766163953Srrs struct sctp_asconf_addrhead asconf_queue; 767171572Srrs 768163953Srrs struct timeval time_entered; /* time we entered state */ 769163953Srrs struct timeval time_last_rcvd; 770163953Srrs struct timeval time_last_sent; 771163953Srrs struct timeval time_last_sat_advance; 772170056Srrs struct sctp_nonpad_sndrcvinfo def_send; 773163953Srrs 774163953Srrs /* timers and such */ 775163953Srrs struct sctp_timer dack_timer; /* Delayed ack timer */ 776171572Srrs struct sctp_timer asconf_timer; /* asconf */ 777163953Srrs struct sctp_timer strreset_timer; /* stream reset */ 778171572Srrs struct sctp_timer shut_guard_timer; /* shutdown guard */ 779163953Srrs struct sctp_timer autoclose_timer; /* automatic close timer */ 780163953Srrs struct sctp_timer delayed_event_timer; /* timer for delayed events */ 781172091Srrs struct sctp_timer delete_prim_timer; /* deleting primary dst */ 782163953Srrs 783171572Srrs /* list of restricted local addresses */ 784167598Srrs struct sctpladdr sctp_restricted_addrs; 785167598Srrs 786171572Srrs /* last local address pending deletion (waiting for an address add) */ 787171572Srrs struct sctp_ifa *asconf_addr_del_pending; 788172091Srrs /* Deleted primary destination (used to stop timer) */ 789172091Srrs struct sctp_nets *deleted_primary; 790163953Srrs 791171572Srrs struct sctpnetlisthead nets; /* remote address list */ 792171572Srrs 793163953Srrs /* Free chunk list */ 794163953Srrs struct sctpchunk_listhead free_chunks; 795163953Srrs 796163953Srrs /* Control chunk queue */ 797163953Srrs struct sctpchunk_listhead control_send_queue; 798163953Srrs 799179157Srrs /* ASCONF chunk queue */ 800179157Srrs struct sctpchunk_listhead asconf_send_queue; 801179157Srrs 802163953Srrs /* 803163953Srrs * Once a TSN hits the wire it is moved to the sent_queue. We 804163953Srrs * maintain two counts here (don't know if any but retran_cnt is 805163953Srrs * needed). The idea is that the sent_queue_retran_cnt reflects how 806163953Srrs * many chunks have been marked for retranmission by either T3-rxt 807163953Srrs * or FR. 808163953Srrs */ 809163953Srrs struct sctpchunk_listhead sent_queue; 810163953Srrs struct sctpchunk_listhead send_queue; 811163953Srrs 812163953Srrs /* re-assembly queue for fragmented chunks on the inbound path */ 813163953Srrs struct sctpchunk_listhead reasmqueue; 814163953Srrs 815218241Stuexen /* Scheduling queues */ 816217760Stuexen union scheduling_data ss_data; 817163953Srrs 818163953Srrs /* 819163953Srrs * This pointer will be set to NULL most of the time. But when we 820163953Srrs * have a fragmented message, where we could not get out all of the 821163953Srrs * message at the last send then this will point to the stream to go 822163953Srrs * get data from. 823163953Srrs */ 824163953Srrs struct sctp_stream_out *locked_on_sending; 825163953Srrs 826163953Srrs /* If an iterator is looking at me, this is it */ 827163953Srrs struct sctp_iterator *stcb_starting_point_for_iterator; 828163953Srrs 829163953Srrs /* ASCONF save the last ASCONF-ACK so we can resend it if necessary */ 830171990Srrs struct sctp_asconf_ackhead asconf_ack_sent; 831163953Srrs 832163953Srrs /* 833163953Srrs * pointer to last stream reset queued to control queue by us with 834163953Srrs * requests. 835163953Srrs */ 836163953Srrs struct sctp_tmit_chunk *str_reset; 837163953Srrs /* 838163953Srrs * if Source Address Selection happening, this will rotate through 839163953Srrs * the link list. 840163953Srrs */ 841163953Srrs struct sctp_laddr *last_used_address; 842163953Srrs 843163953Srrs /* stream arrays */ 844163953Srrs struct sctp_stream_in *strmin; 845163953Srrs struct sctp_stream_out *strmout; 846163953Srrs uint8_t *mapping_array; 847163953Srrs /* primary destination to use */ 848163953Srrs struct sctp_nets *primary_destination; 849224641Stuexen struct sctp_nets *alternate; /* If primary is down or PF */ 850163953Srrs /* For CMT */ 851190689Srrs struct sctp_nets *last_net_cmt_send_started; 852163953Srrs /* last place I got a data chunk from */ 853163953Srrs struct sctp_nets *last_data_chunk_from; 854163953Srrs /* last place I got a control from */ 855163953Srrs struct sctp_nets *last_control_chunk_from; 856163953Srrs 857163953Srrs /* circular looking for output selection */ 858163953Srrs struct sctp_stream_out *last_out_stream; 859163953Srrs 860163953Srrs /* 861163953Srrs * wait to the point the cum-ack passes req->send_reset_at_tsn for 862163953Srrs * any req on the list. 863163953Srrs */ 864163953Srrs struct sctp_resethead resetHead; 865163953Srrs 866163953Srrs /* queue of chunks waiting to be sent into the local stack */ 867163953Srrs struct sctp_readhead pending_reply_queue; 868163953Srrs 869171440Srrs /* JRS - the congestion control functions are in this struct */ 870171440Srrs struct sctp_cc_functions cc_functions; 871171440Srrs /* 872171440Srrs * JRS - value to store the currently loaded congestion control 873171440Srrs * module 874171440Srrs */ 875171440Srrs uint32_t congestion_control_module; 876217760Stuexen /* RS - the stream scheduling functions are in this struct */ 877217760Stuexen struct sctp_ss_functions ss_functions; 878217760Stuexen /* RS - value to store the currently loaded stream scheduling module */ 879217760Stuexen uint32_t stream_scheduling_module; 880171440Srrs 881167598Srrs uint32_t vrf_id; 882167598Srrs 883163953Srrs uint32_t cookie_preserve_req; 884163953Srrs /* ASCONF next seq I am sending out, inits at init-tsn */ 885163953Srrs uint32_t asconf_seq_out; 886179157Srrs uint32_t asconf_seq_out_acked; 887163953Srrs /* ASCONF last received ASCONF from peer, starts at peer's TSN-1 */ 888163953Srrs uint32_t asconf_seq_in; 889163953Srrs 890163953Srrs /* next seq I am sending in str reset messages */ 891163953Srrs uint32_t str_reset_seq_out; 892163953Srrs /* next seq I am expecting in str reset messages */ 893163953Srrs uint32_t str_reset_seq_in; 894163953Srrs 895163953Srrs /* various verification tag information */ 896163953Srrs uint32_t my_vtag; /* The tag to be used. if assoc is re-initited 897163953Srrs * by remote end, and I have unlocked this 898163953Srrs * will be regenerated to a new random value. */ 899163953Srrs uint32_t peer_vtag; /* The peers last tag */ 900163953Srrs 901163953Srrs uint32_t my_vtag_nonce; 902163953Srrs uint32_t peer_vtag_nonce; 903163953Srrs 904163953Srrs uint32_t assoc_id; 905163953Srrs 906163953Srrs /* This is the SCTP fragmentation threshold */ 907163953Srrs uint32_t smallest_mtu; 908163953Srrs 909163953Srrs /* 910163953Srrs * Special hook for Fast retransmit, allows us to track the highest 911163953Srrs * TSN that is NEW in this SACK if gap ack blocks are present. 912163953Srrs */ 913163953Srrs uint32_t this_sack_highest_gap; 914163953Srrs 915163953Srrs /* 916163953Srrs * The highest consecutive TSN that has been acked by peer on my 917163953Srrs * sends 918163953Srrs */ 919163953Srrs uint32_t last_acked_seq; 920163953Srrs 921163953Srrs /* The next TSN that I will use in sending. */ 922163953Srrs uint32_t sending_seq; 923163953Srrs 924163953Srrs /* Original seq number I used ??questionable to keep?? */ 925163953Srrs uint32_t init_seq_number; 926163953Srrs 927163953Srrs 928163953Srrs /* The Advanced Peer Ack Point, as required by the PR-SCTP */ 929163953Srrs /* (A1 in Section 4.2) */ 930163953Srrs uint32_t advanced_peer_ack_point; 931163953Srrs 932163953Srrs /* 933163953Srrs * The highest consequetive TSN at the bottom of the mapping array 934163953Srrs * (for his sends). 935163953Srrs */ 936163953Srrs uint32_t cumulative_tsn; 937163953Srrs /* 938163953Srrs * Used to track the mapping array and its offset bits. This MAY be 939163953Srrs * lower then cumulative_tsn. 940163953Srrs */ 941163953Srrs uint32_t mapping_array_base_tsn; 942163953Srrs /* 943163953Srrs * used to track highest TSN we have received and is listed in the 944163953Srrs * mapping array. 945163953Srrs */ 946163953Srrs uint32_t highest_tsn_inside_map; 947163953Srrs 948185694Srrs /* EY - new NR variables used for nr_sack based on mapping_array */ 949185694Srrs uint8_t *nr_mapping_array; 950185694Srrs uint32_t highest_tsn_inside_nr_map; 951185694Srrs 952163953Srrs uint32_t fast_recovery_tsn; 953163953Srrs uint32_t sat_t3_recovery_tsn; 954163953Srrs uint32_t tsn_last_delivered; 955163953Srrs /* 956163953Srrs * For the pd-api we should re-write this a bit more efficent. We 957163953Srrs * could have multiple sctp_queued_to_read's that we are building at 958163953Srrs * once. Now we only do this when we get ready to deliver to the 959163953Srrs * socket buffer. Note that we depend on the fact that the struct is 960163953Srrs * "stuck" on the read queue until we finish all the pd-api. 961163953Srrs */ 962163953Srrs struct sctp_queued_to_read *control_pdapi; 963163953Srrs 964163953Srrs uint32_t tsn_of_pdapi_last_delivered; 965163953Srrs uint32_t pdapi_ppid; 966163953Srrs uint32_t context; 967163953Srrs uint32_t last_reset_action[SCTP_MAX_RESET_PARAMS]; 968163953Srrs uint32_t last_sending_seq[SCTP_MAX_RESET_PARAMS]; 969163953Srrs uint32_t last_base_tsnsent[SCTP_MAX_RESET_PARAMS]; 970166675Srrs#ifdef SCTP_ASOCLOG_OF_TSNS 971163953Srrs /* 972166675Srrs * special log - This adds considerable size to the asoc, but 973166675Srrs * provides a log that you can use to detect problems via kgdb. 974166675Srrs */ 975166675Srrs struct sctp_tsn_log in_tsnlog[SCTP_TSN_LOG_SIZE]; 976166675Srrs struct sctp_tsn_log out_tsnlog[SCTP_TSN_LOG_SIZE]; 977171477Srrs uint32_t cumack_log[SCTP_TSN_LOG_SIZE]; 978172703Srrs uint32_t cumack_logsnt[SCTP_TSN_LOG_SIZE]; 979166675Srrs uint16_t tsn_in_at; 980166675Srrs uint16_t tsn_out_at; 981168859Srrs uint16_t tsn_in_wrapped; 982168859Srrs uint16_t tsn_out_wrapped; 983171477Srrs uint16_t cumack_log_at; 984172703Srrs uint16_t cumack_log_atsnt; 985166675Srrs#endif /* SCTP_ASOCLOG_OF_TSNS */ 986171440Srrs#ifdef SCTP_FS_SPEC_LOG 987171440Srrs struct sctp_fs_spec_log fslog[SCTP_FS_SPEC_LOG_SIZE]; 988171440Srrs uint16_t fs_index; 989171440Srrs#endif 990171440Srrs 991166675Srrs /* 992163953Srrs * window state information and smallest MTU that I use to bound 993163953Srrs * segmentation 994163953Srrs */ 995163953Srrs uint32_t peers_rwnd; 996163953Srrs uint32_t my_rwnd; 997163953Srrs uint32_t my_last_reported_rwnd; 998170056Srrs uint32_t sctp_frag_point; 999163953Srrs 1000163953Srrs uint32_t total_output_queue_size; 1001163953Srrs 1002171943Srrs uint32_t sb_cc; /* shadow of sb_cc */ 1003174257Srrs uint32_t sb_send_resv; /* amount reserved on a send */ 1004171943Srrs uint32_t my_rwnd_control_len; /* shadow of sb_mbcnt used for rwnd 1005171943Srrs * control */ 1006225549Stuexen#ifdef INET6 1007163953Srrs uint32_t default_flowlabel; 1008225549Stuexen#endif 1009163953Srrs uint32_t pr_sctp_cnt; 1010218129Srrs int ctrl_queue_cnt; /* could be removed REM - NO IT CAN'T!! RRS */ 1011163953Srrs /* 1012163953Srrs * All outbound datagrams queue into this list from the individual 1013163953Srrs * stream queue. Here they get assigned a TSN and then await 1014163953Srrs * sending. The stream seq comes when it is first put in the 1015163953Srrs * individual str queue 1016163953Srrs */ 1017163953Srrs unsigned int stream_queue_cnt; 1018163953Srrs unsigned int send_queue_cnt; 1019163953Srrs unsigned int sent_queue_cnt; 1020163953Srrs unsigned int sent_queue_cnt_removeable; 1021163953Srrs /* 1022163953Srrs * Number on sent queue that are marked for retran until this value 1023163953Srrs * is 0 we only send one packet of retran'ed data. 1024163953Srrs */ 1025163953Srrs unsigned int sent_queue_retran_cnt; 1026163953Srrs 1027163953Srrs unsigned int size_on_reasm_queue; 1028163953Srrs unsigned int cnt_on_reasm_queue; 1029210599Srrs unsigned int fwd_tsn_cnt; 1030163953Srrs /* amount of data (bytes) currently in flight (on all destinations) */ 1031163953Srrs unsigned int total_flight; 1032163953Srrs /* Total book size in flight */ 1033163953Srrs unsigned int total_flight_count; /* count of chunks used with 1034163953Srrs * book total */ 1035163953Srrs /* count of destinaton nets and list of destination nets */ 1036163953Srrs unsigned int numnets; 1037163953Srrs 1038163953Srrs /* Total error count on this association */ 1039163953Srrs unsigned int overall_error_count; 1040163953Srrs 1041163953Srrs unsigned int cnt_msg_on_sb; 1042163953Srrs 1043163953Srrs /* All stream count of chunks for delivery */ 1044163953Srrs unsigned int size_on_all_streams; 1045163953Srrs unsigned int cnt_on_all_streams; 1046163953Srrs 1047224641Stuexen /* Heart Beat delay in ms */ 1048224641Stuexen uint32_t heart_beat_delay; 1049163953Srrs 1050163953Srrs /* autoclose */ 1051163953Srrs unsigned int sctp_autoclose_ticks; 1052163953Srrs 1053163953Srrs /* how many preopen streams we have */ 1054163953Srrs unsigned int pre_open_streams; 1055163953Srrs 1056163953Srrs /* How many streams I support coming into me */ 1057163953Srrs unsigned int max_inbound_streams; 1058163953Srrs 1059163953Srrs /* the cookie life I award for any cookie, in seconds */ 1060163953Srrs unsigned int cookie_life; 1061163953Srrs /* time to delay acks for */ 1062163953Srrs unsigned int delayed_ack; 1063167598Srrs unsigned int old_delayed_ack; 1064167598Srrs unsigned int sack_freq; 1065167598Srrs unsigned int data_pkts_seen; 1066163953Srrs 1067163953Srrs unsigned int numduptsns; 1068163953Srrs int dup_tsns[SCTP_MAX_DUP_TSNS]; 1069163953Srrs unsigned int initial_init_rto_max; /* initial RTO for INIT's */ 1070163953Srrs unsigned int initial_rto; /* initial send RTO */ 1071163953Srrs unsigned int minrto; /* per assoc RTO-MIN */ 1072163953Srrs unsigned int maxrto; /* per assoc RTO-MAX */ 1073163953Srrs 1074163953Srrs /* authentication fields */ 1075163953Srrs sctp_auth_chklist_t *local_auth_chunks; 1076163953Srrs sctp_auth_chklist_t *peer_auth_chunks; 1077163953Srrs sctp_hmaclist_t *local_hmacs; /* local HMACs supported */ 1078163953Srrs sctp_hmaclist_t *peer_hmacs; /* peer HMACs supported */ 1079163953Srrs struct sctp_keyhead shared_keys; /* assoc's shared keys */ 1080163953Srrs sctp_authinfo_t authinfo; /* randoms, cached keys */ 1081163953Srrs /* 1082163953Srrs * refcnt to block freeing when a sender or receiver is off coping 1083163953Srrs * user data in. 1084163953Srrs */ 1085163996Srrs uint32_t refcnt; 1086163996Srrs uint32_t chunks_on_out_queue; /* total chunks floating around, 1087163996Srrs * locked by send socket buffer */ 1088171990Srrs uint32_t peers_adaptation; 1089163996Srrs uint16_t peer_hmac_id; /* peer HMAC id to send */ 1090163996Srrs 1091163953Srrs /* 1092163953Srrs * Being that we have no bag to collect stale cookies, and that we 1093163953Srrs * really would not want to anyway.. we will count them in this 1094163953Srrs * counter. We of course feed them to the pigeons right away (I have 1095163953Srrs * always thought of pigeons as flying rats). 1096163953Srrs */ 1097163953Srrs uint16_t stale_cookie_count; 1098163953Srrs 1099163953Srrs /* 1100163953Srrs * For the partial delivery API, if up, invoked this is what last 1101163953Srrs * TSN I delivered 1102163953Srrs */ 1103163953Srrs uint16_t str_of_pdapi; 1104163953Srrs uint16_t ssn_of_pdapi; 1105163953Srrs 1106163953Srrs /* counts of actual built streams. Allocation may be more however */ 1107163953Srrs /* could re-arrange to optimize space here. */ 1108163953Srrs uint16_t streamincnt; 1109163953Srrs uint16_t streamoutcnt; 1110188854Srrs uint16_t strm_realoutsize; 1111233660Srrs uint16_t strm_pending_add_size; 1112163953Srrs /* my maximum number of retrans of INIT and SEND */ 1113163953Srrs /* copied from SCTP but should be individually setable */ 1114163953Srrs uint16_t max_init_times; 1115163953Srrs uint16_t max_send_times; 1116163953Srrs 1117163953Srrs uint16_t def_net_failure; 1118163953Srrs 1119224641Stuexen uint16_t def_net_pf_threshold; 1120224641Stuexen 1121163953Srrs /* 1122163953Srrs * lock flag: 0 is ok to send, 1+ (duals as a retran count) is 1123163953Srrs * awaiting ACK 1124163953Srrs */ 1125163953Srrs uint16_t mapping_array_size; 1126163953Srrs 1127163953Srrs uint16_t last_strm_seq_delivered; 1128163953Srrs uint16_t last_strm_no_delivered; 1129163953Srrs 1130163953Srrs uint16_t last_revoke_count; 1131163953Srrs int16_t num_send_timers_up; 1132163953Srrs 1133163953Srrs uint16_t stream_locked_on; 1134163953Srrs uint16_t ecn_echo_cnt_onq; 1135163953Srrs 1136163953Srrs uint16_t free_chunk_cnt; 1137163953Srrs uint8_t stream_locked; 1138163953Srrs uint8_t authenticated; /* packet authenticated ok */ 1139163953Srrs /* 1140167598Srrs * This flag indicates that a SACK need to be sent. Initially this 1141167598Srrs * is 1 to send the first sACK immediately. 1142163953Srrs */ 1143167598Srrs uint8_t send_sack; 1144163953Srrs 1145218186Srrs /* max burst of new packets into the network */ 1146217894Stuexen uint32_t max_burst; 1147218186Srrs /* max burst of fast retransmit packets */ 1148218186Srrs uint32_t fr_max_burst; 1149163953Srrs 1150163953Srrs uint8_t sat_network; /* RTT is in range of sat net or greater */ 1151163953Srrs uint8_t sat_network_lockout; /* lockout code */ 1152163953Srrs uint8_t burst_limit_applied; /* Burst limit in effect at last send? */ 1153163953Srrs /* flag goes on when we are doing a partial delivery api */ 1154163953Srrs uint8_t hb_random_values[4]; 1155163953Srrs uint8_t fragmented_delivery_inprogress; 1156163953Srrs uint8_t fragment_flags; 1157163953Srrs uint8_t last_flags_delivered; 1158163953Srrs uint8_t hb_ect_randombit; 1159163953Srrs uint8_t hb_random_idx; 1160224870Stuexen uint8_t default_dscp; 1161171572Srrs uint8_t asconf_del_pending; /* asconf delete last addr pending */ 1162294140Stuexen uint8_t trigger_reset; 1163163953Srrs /* 1164163953Srrs * This value, plus all other ack'd but above cum-ack is added 1165163953Srrs * together to cross check against the bit that we have yet to 1166163953Srrs * define (probably in the SACK). When the cum-ack is updated, this 1167163953Srrs * sum is updated as well. 1168163953Srrs */ 1169218129Srrs 1170270357Stuexen /* Flags whether an extension is supported or not */ 1171270356Stuexen uint8_t ecn_supported; 1172270357Stuexen uint8_t prsctp_supported; 1173270362Stuexen uint8_t auth_supported; 1174270362Stuexen uint8_t asconf_supported; 1175270361Stuexen uint8_t reconfig_supported; 1176270359Stuexen uint8_t nrsack_supported; 1177270360Stuexen uint8_t pktdrop_supported; 1178163953Srrs 1179233660Srrs /* Did the peer make the stream config (add out) request */ 1180233660Srrs uint8_t peer_req_out; 1181233660Srrs 1182233660Srrs uint8_t local_strreset_support; 1183163953Srrs 1184185694Srrs uint8_t peer_supports_nat; 1185163953Srrs 1186246595Stuexen struct sctp_scoping scope; 1187163953Srrs /* flags to handle send alternate net tracking */ 1188163953Srrs uint8_t used_alt_asconfack; 1189163953Srrs uint8_t fast_retran_loss_recovery; 1190163953Srrs uint8_t sat_t3_loss_recovery; 1191163953Srrs uint8_t dropped_special_cnt; 1192163953Srrs uint8_t seen_a_sack_this_pkt; 1193163953Srrs uint8_t stream_reset_outstanding; 1194163953Srrs uint8_t stream_reset_out_is_outstanding; 1195163953Srrs uint8_t delayed_connection; 1196163953Srrs uint8_t ifp_had_enobuf; 1197163953Srrs uint8_t saw_sack_with_frags; 1198216188Stuexen uint8_t saw_sack_with_nr_frags; 1199185694Srrs uint8_t in_asocid_hash; 1200163953Srrs uint8_t assoc_up_sent; 1201171990Srrs uint8_t adaptation_needed; 1202171990Srrs uint8_t adaptation_sent; 1203163953Srrs /* CMT variables */ 1204163953Srrs uint8_t cmt_dac_pkts_rcvd; 1205163953Srrs uint8_t sctp_cmt_on_off; 1206163953Srrs uint8_t iam_blocking; 1207166023Srrs uint8_t cookie_how[8]; 1208171440Srrs /* JRS 5/21/07 - CMT PF variable */ 1209171440Srrs uint8_t sctp_cmt_pf; 1210219057Srrs uint8_t use_precise_time; 1211254670Stuexen uint64_t sctp_features; 1212283724Stuexen uint32_t max_cwnd; 1213227755Stuexen uint16_t port; /* remote UDP encapsulation port */ 1214163953Srrs /* 1215163953Srrs * The mapping array is used to track out of order sequences above 1216163953Srrs * last_acked_seq. 0 indicates packet missing 1 indicates packet 1217163953Srrs * rec'd. We slide it up every time we raise last_acked_seq and 0 1218163953Srrs * trailing locactions out. If I get a TSN above the array 1219163953Srrs * mappingArraySz, I discard the datagram and let retransmit happen. 1220163953Srrs */ 1221166675Srrs uint32_t marked_retrans; 1222166675Srrs uint32_t timoinit; 1223166675Srrs uint32_t timodata; 1224166675Srrs uint32_t timosack; 1225166675Srrs uint32_t timoshutdown; 1226166675Srrs uint32_t timoheartbeat; 1227166675Srrs uint32_t timocookie; 1228166675Srrs uint32_t timoshutdownack; 1229166675Srrs struct timeval start_time; 1230166675Srrs struct timeval discontinuity_time; 1231270363Stuexen uint64_t abandoned_unsent[SCTP_PR_SCTP_MAX + 1]; 1232270363Stuexen uint64_t abandoned_sent[SCTP_PR_SCTP_MAX + 1]; 1233163953Srrs}; 1234163953Srrs 1235163953Srrs#endif 1236