1f8829a4aSRandall Stewart /*- 251369649SPedro F. Giffuni * SPDX-License-Identifier: BSD-3-Clause 351369649SPedro F. Giffuni * 4830d754dSRandall Stewart * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved. 5807aad63SMichael Tuexen * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. 6807aad63SMichael Tuexen * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. 7f8829a4aSRandall Stewart * 8f8829a4aSRandall Stewart * Redistribution and use in source and binary forms, with or without 9f8829a4aSRandall Stewart * modification, are permitted provided that the following conditions are met: 10f8829a4aSRandall Stewart * 11f8829a4aSRandall Stewart * a) Redistributions of source code must retain the above copyright notice, 12f8829a4aSRandall Stewart * this list of conditions and the following disclaimer. 13f8829a4aSRandall Stewart * 14f8829a4aSRandall Stewart * b) Redistributions in binary form must reproduce the above copyright 15f8829a4aSRandall Stewart * notice, this list of conditions and the following disclaimer in 16f8829a4aSRandall Stewart * the documentation and/or other materials provided with the distribution. 17f8829a4aSRandall Stewart * 18f8829a4aSRandall Stewart * c) Neither the name of Cisco Systems, Inc. nor the names of its 19f8829a4aSRandall Stewart * contributors may be used to endorse or promote products derived 20f8829a4aSRandall Stewart * from this software without specific prior written permission. 21f8829a4aSRandall Stewart * 22f8829a4aSRandall Stewart * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 23f8829a4aSRandall Stewart * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 24f8829a4aSRandall Stewart * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25f8829a4aSRandall Stewart * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 26f8829a4aSRandall Stewart * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27f8829a4aSRandall Stewart * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28f8829a4aSRandall Stewart * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29f8829a4aSRandall Stewart * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30f8829a4aSRandall Stewart * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31f8829a4aSRandall Stewart * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 32f8829a4aSRandall Stewart * THE POSSIBILITY OF SUCH DAMAGE. 33f8829a4aSRandall Stewart */ 34f8829a4aSRandall Stewart 35f8829a4aSRandall Stewart #include <sys/cdefs.h> 36f8829a4aSRandall Stewart __FBSDID("$FreeBSD$"); 37f8829a4aSRandall Stewart 38807aad63SMichael Tuexen #ifndef _NETINET_SCTP_STRUCTS_H_ 39807aad63SMichael Tuexen #define _NETINET_SCTP_STRUCTS_H_ 40f8829a4aSRandall Stewart 41139bc87fSRandall Stewart #include <netinet/sctp_os.h> 42f8829a4aSRandall Stewart #include <netinet/sctp_header.h> 43f8829a4aSRandall Stewart #include <netinet/sctp_auth.h> 44f8829a4aSRandall Stewart 45f8829a4aSRandall Stewart struct sctp_timer { 46139bc87fSRandall Stewart sctp_os_timer_t timer; 47139bc87fSRandall Stewart 48f8829a4aSRandall Stewart int type; 49f8829a4aSRandall Stewart /* 50f8829a4aSRandall Stewart * Depending on the timer type these will be setup and cast with the 51f8829a4aSRandall Stewart * appropriate entity. 52f8829a4aSRandall Stewart */ 53f8829a4aSRandall Stewart void *ep; 54f8829a4aSRandall Stewart void *tcb; 55f8829a4aSRandall Stewart void *net; 568518270eSMichael Tuexen void *vnet; 57f8829a4aSRandall Stewart 58f8829a4aSRandall Stewart /* for sanity checking */ 59f8829a4aSRandall Stewart void *self; 60f8829a4aSRandall Stewart uint32_t ticks; 61a5d547adSRandall Stewart uint32_t stopped_from; 62f8829a4aSRandall Stewart }; 63f8829a4aSRandall Stewart 64a5d547adSRandall Stewart struct sctp_foo_stuff { 65a5d547adSRandall Stewart struct sctp_inpcb *inp; 66a5d547adSRandall Stewart uint32_t lineno; 67a5d547adSRandall Stewart uint32_t ticks; 68a5d547adSRandall Stewart int updown; 69a5d547adSRandall Stewart }; 70a5d547adSRandall Stewart 71f8829a4aSRandall Stewart /* 72f8829a4aSRandall Stewart * This is the information we track on each interface that we know about from 73f8829a4aSRandall Stewart * the distant end. 74f8829a4aSRandall Stewart */ 75f8829a4aSRandall Stewart TAILQ_HEAD(sctpnetlisthead, sctp_nets); 76f8829a4aSRandall Stewart 77f8829a4aSRandall Stewart struct sctp_stream_reset_list { 78f8829a4aSRandall Stewart TAILQ_ENTRY(sctp_stream_reset_list) next_resp; 797cca1775SRandall Stewart uint32_t seq; 80f8829a4aSRandall Stewart uint32_t tsn; 81a169d6ecSMichael Tuexen uint32_t number_entries; 82a169d6ecSMichael Tuexen uint16_t list_of_streams[]; 83f8829a4aSRandall Stewart }; 84f8829a4aSRandall Stewart 85f8829a4aSRandall Stewart TAILQ_HEAD(sctp_resethead, sctp_stream_reset_list); 86f8829a4aSRandall Stewart 87f8829a4aSRandall Stewart /* 88f8829a4aSRandall Stewart * Users of the iterator need to malloc a iterator with a call to 8942551e99SRandall Stewart * sctp_initiate_iterator(inp_func, assoc_func, inp_func, pcb_flags, pcb_features, 90f8829a4aSRandall Stewart * asoc_state, void-ptr-arg, uint32-arg, end_func, inp); 91f8829a4aSRandall Stewart * 92f8829a4aSRandall Stewart * Use the following two defines if you don't care what pcb flags are on the EP 93f8829a4aSRandall Stewart * and/or you don't care what state the association is in. 94f8829a4aSRandall Stewart * 95f8829a4aSRandall Stewart * Note that if you specify an INP as the last argument then ONLY each 96f8829a4aSRandall Stewart * association of that single INP will be executed upon. Note that the pcb 97f8829a4aSRandall Stewart * flags STILL apply so if the inp you specify has different pcb_flags then 98f8829a4aSRandall Stewart * what you put in pcb_flags nothing will happen. use SCTP_PCB_ANY_FLAGS to 99f8829a4aSRandall Stewart * assure the inp you specify gets treated. 100f8829a4aSRandall Stewart */ 101f8829a4aSRandall Stewart #define SCTP_PCB_ANY_FLAGS 0x00000000 102f8829a4aSRandall Stewart #define SCTP_PCB_ANY_FEATURES 0x00000000 103f8829a4aSRandall Stewart #define SCTP_ASOC_ANY_STATE 0x00000000 104f8829a4aSRandall Stewart 105f8829a4aSRandall Stewart typedef void (*asoc_func) (struct sctp_inpcb *, struct sctp_tcb *, void *ptr, 106f8829a4aSRandall Stewart uint32_t val); 10742551e99SRandall Stewart typedef int (*inp_func) (struct sctp_inpcb *, void *ptr, uint32_t val); 108f8829a4aSRandall Stewart typedef void (*end_func) (void *ptr, uint32_t val); 109f8829a4aSRandall Stewart 1102f9e6db0SMichael Tuexen #if defined(SCTP_MCORE_INPUT) && defined(SMP) 111bfc46083SRandall Stewart /* whats on the mcore control struct */ 112bfc46083SRandall Stewart struct sctp_mcore_queue { 113bfc46083SRandall Stewart TAILQ_ENTRY(sctp_mcore_queue) next; 114bfc46083SRandall Stewart struct vnet *vn; 115bfc46083SRandall Stewart struct mbuf *m; 116bfc46083SRandall Stewart int off; 117bfc46083SRandall Stewart int v6; 118bfc46083SRandall Stewart }; 119bfc46083SRandall Stewart 120bfc46083SRandall Stewart TAILQ_HEAD(sctp_mcore_qhead, sctp_mcore_queue); 121bfc46083SRandall Stewart 122bfc46083SRandall Stewart struct sctp_mcore_ctrl { 123bfc46083SRandall Stewart SCTP_PROCESS_STRUCT thread_proc; 124bfc46083SRandall Stewart struct sctp_mcore_qhead que; 125bfc46083SRandall Stewart struct mtx core_mtx; 126bfc46083SRandall Stewart struct mtx que_mtx; 127bfc46083SRandall Stewart int running; 128bfc46083SRandall Stewart int cpuid; 129bfc46083SRandall Stewart }; 130bfc46083SRandall Stewart #endif 131bfc46083SRandall Stewart 132*ad6ae52dSMichael Tuexen /* This struct is here to cut out the compatiabilty 133*ad6ae52dSMichael Tuexen * pad that bulks up both the inp and stcb. The non 134*ad6ae52dSMichael Tuexen * pad portion MUST stay in complete sync with 135*ad6ae52dSMichael Tuexen * sctp_sndrcvinfo... i.e. if sinfo_xxxx is added 136*ad6ae52dSMichael Tuexen * this must be done here too. 137*ad6ae52dSMichael Tuexen */ 138*ad6ae52dSMichael Tuexen struct sctp_nonpad_sndrcvinfo { 139*ad6ae52dSMichael Tuexen uint16_t sinfo_stream; 140*ad6ae52dSMichael Tuexen uint16_t sinfo_ssn; 141*ad6ae52dSMichael Tuexen uint16_t sinfo_flags; 142*ad6ae52dSMichael Tuexen uint32_t sinfo_ppid; 143*ad6ae52dSMichael Tuexen uint32_t sinfo_context; 144*ad6ae52dSMichael Tuexen uint32_t sinfo_timetolive; 145*ad6ae52dSMichael Tuexen uint32_t sinfo_tsn; 146*ad6ae52dSMichael Tuexen uint32_t sinfo_cumtsn; 147*ad6ae52dSMichael Tuexen sctp_assoc_t sinfo_assoc_id; 148*ad6ae52dSMichael Tuexen uint16_t sinfo_keynumber; 149*ad6ae52dSMichael Tuexen uint16_t sinfo_keynumber_valid; 150*ad6ae52dSMichael Tuexen }; 151*ad6ae52dSMichael Tuexen 152f8829a4aSRandall Stewart struct sctp_iterator { 15342551e99SRandall Stewart TAILQ_ENTRY(sctp_iterator) sctp_nxt_itr; 154f7517433SRandall Stewart struct vnet *vn; 155f8829a4aSRandall Stewart struct sctp_timer tmr; 156f8829a4aSRandall Stewart struct sctp_inpcb *inp; /* current endpoint */ 157f8829a4aSRandall Stewart struct sctp_tcb *stcb; /* current* assoc */ 158f7517433SRandall Stewart struct sctp_inpcb *next_inp; /* special hook to skip to */ 159f8829a4aSRandall Stewart asoc_func function_assoc; /* per assoc function */ 160f8829a4aSRandall Stewart inp_func function_inp; /* per endpoint function */ 16142551e99SRandall Stewart inp_func function_inp_end; /* end INP function */ 162f8829a4aSRandall Stewart end_func function_atend; /* iterator completion function */ 163f8829a4aSRandall Stewart void *pointer; /* pointer for apply func to use */ 164f8829a4aSRandall Stewart uint32_t val; /* value for apply func to use */ 165f8829a4aSRandall Stewart uint32_t pcb_flags; /* endpoint flags being checked */ 166f8829a4aSRandall Stewart uint32_t pcb_features; /* endpoint features being checked */ 167f8829a4aSRandall Stewart uint32_t asoc_state; /* assoc state being checked */ 168f8829a4aSRandall Stewart uint32_t iterator_flags; 169f8829a4aSRandall Stewart uint8_t no_chunk_output; 17042551e99SRandall Stewart uint8_t done_current_ep; 171f8829a4aSRandall Stewart }; 172f8829a4aSRandall Stewart 173f8829a4aSRandall Stewart /* iterator_flags values */ 174f8829a4aSRandall Stewart #define SCTP_ITERATOR_DO_ALL_INP 0x00000001 175f8829a4aSRandall Stewart #define SCTP_ITERATOR_DO_SINGLE_INP 0x00000002 176f8829a4aSRandall Stewart 17742551e99SRandall Stewart TAILQ_HEAD(sctpiterators, sctp_iterator); 178f8829a4aSRandall Stewart 179f8829a4aSRandall Stewart struct sctp_copy_all { 180f8829a4aSRandall Stewart struct sctp_inpcb *inp; /* ep */ 181f8829a4aSRandall Stewart struct mbuf *m; 182*ad6ae52dSMichael Tuexen struct sctp_nonpad_sndrcvinfo sndrcv; 18358e6eeefSMichael Tuexen ssize_t sndlen; 184f8829a4aSRandall Stewart int cnt_sent; 185f8829a4aSRandall Stewart int cnt_failed; 186f8829a4aSRandall Stewart }; 187f8829a4aSRandall Stewart 18842551e99SRandall Stewart struct sctp_asconf_iterator { 18942551e99SRandall Stewart struct sctpladdr list_of_work; 19042551e99SRandall Stewart int cnt; 19142551e99SRandall Stewart }; 19242551e99SRandall Stewart 193f7517433SRandall Stewart struct iterator_control { 194f7517433SRandall Stewart struct mtx ipi_iterator_wq_mtx; 195f7517433SRandall Stewart struct mtx it_mtx; 196f7517433SRandall Stewart SCTP_PROCESS_STRUCT thread_proc; 197f7517433SRandall Stewart struct sctpiterators iteratorhead; 198f7517433SRandall Stewart struct sctp_iterator *cur_it; 199f7517433SRandall Stewart uint32_t iterator_running; 200f7517433SRandall Stewart uint32_t iterator_flags; 201f7517433SRandall Stewart }; 20287eac1ceSMichael Tuexen #define SCTP_ITERATOR_STOP_CUR_IT 0x00000004 20387eac1ceSMichael Tuexen #define SCTP_ITERATOR_STOP_CUR_INP 0x00000008 204f7517433SRandall Stewart 20517205eccSRandall Stewart struct sctp_net_route { 206983066f0SAlexander V. Chernikov struct nhop_object *ro_nh; 207273e3163SMichael Tuexen struct llentry *ro_lle; 20879cadff4SMichael Tuexen char *ro_prepend; 20979cadff4SMichael Tuexen uint16_t ro_plen; 21079cadff4SMichael Tuexen uint16_t ro_flags; 21179cadff4SMichael Tuexen uint16_t ro_mtu; 21279cadff4SMichael Tuexen uint16_t spare; 21317205eccSRandall Stewart union sctp_sockstore _l_addr; /* remote peer addr */ 21417205eccSRandall Stewart struct sctp_ifa *_s_addr; /* our selected src addr */ 21517205eccSRandall Stewart }; 21617205eccSRandall Stewart 217b54d3a6cSRandall Stewart struct htcp { 218b54d3a6cSRandall Stewart uint16_t alpha; /* Fixed point arith, << 7 */ 219b54d3a6cSRandall Stewart uint8_t beta; /* Fixed point arith, << 7 */ 220b54d3a6cSRandall Stewart uint8_t modeswitch; /* Delay modeswitch until we had at least one 221b54d3a6cSRandall Stewart * congestion event */ 222b54d3a6cSRandall Stewart uint32_t last_cong; /* Time since last congestion event end */ 223b54d3a6cSRandall Stewart uint32_t undo_last_cong; 224b54d3a6cSRandall Stewart uint16_t bytes_acked; 225b54d3a6cSRandall Stewart uint32_t bytecount; 226b54d3a6cSRandall Stewart uint32_t minRTT; 227b54d3a6cSRandall Stewart uint32_t maxRTT; 228b54d3a6cSRandall Stewart 229b54d3a6cSRandall Stewart uint32_t undo_maxRTT; 230b54d3a6cSRandall Stewart uint32_t undo_old_maxB; 231b54d3a6cSRandall Stewart 232b54d3a6cSRandall Stewart /* Bandwidth estimation */ 233b54d3a6cSRandall Stewart uint32_t minB; 234b54d3a6cSRandall Stewart uint32_t maxB; 235b54d3a6cSRandall Stewart uint32_t old_maxB; 236b54d3a6cSRandall Stewart uint32_t Bi; 237b54d3a6cSRandall Stewart uint32_t lasttime; 238b54d3a6cSRandall Stewart }; 239b54d3a6cSRandall Stewart 24048b6c649SRandall Stewart struct rtcc_cc { 24148b6c649SRandall Stewart struct timeval tls; /* The time we started the sending */ 24248b6c649SRandall Stewart uint64_t lbw; /* Our last estimated bw */ 24348b6c649SRandall Stewart uint64_t lbw_rtt; /* RTT at bw estimate */ 24448b6c649SRandall Stewart uint64_t bw_bytes; /* The total bytes since this sending began */ 24548b6c649SRandall Stewart uint64_t bw_tot_time; /* The total time since sending began */ 24648b6c649SRandall Stewart uint64_t new_tot_time; /* temp holding the new value */ 247f79aab18SRandall Stewart uint64_t bw_bytes_at_last_rttc; /* What bw_bytes was at last rtt calc */ 248f79aab18SRandall Stewart uint32_t cwnd_at_bw_set; /* Cwnd at last bw saved - lbw */ 249f79aab18SRandall Stewart uint32_t vol_reduce; /* cnt of voluntary reductions */ 250f79aab18SRandall Stewart uint16_t steady_step; /* The number required to be in steady state */ 251f79aab18SRandall Stewart uint16_t step_cnt; /* The current number */ 252f79aab18SRandall Stewart uint8_t ret_from_eq; /* When all things are equal what do I return 253f79aab18SRandall Stewart * 0/1 - 1 no cc advance */ 254f79aab18SRandall Stewart uint8_t use_dccc_ecn; /* Flag to enable DCCC ECN */ 25548b6c649SRandall Stewart uint8_t tls_needs_set; /* Flag to indicate we need to set tls 0 or 1 25648b6c649SRandall Stewart * means set at send 2 not */ 2570053ed28SMichael Tuexen uint8_t last_step_state; /* Last state if steady state stepdown 2580053ed28SMichael Tuexen * is on */ 259f79aab18SRandall Stewart uint8_t rtt_set_this_sack; /* Flag saying this sack had RTT calc 260f79aab18SRandall Stewart * on it */ 261f79aab18SRandall Stewart uint8_t last_inst_ind; /* Last saved inst indication */ 26248b6c649SRandall Stewart }; 26348b6c649SRandall Stewart 264f8829a4aSRandall Stewart struct sctp_nets { 265f8829a4aSRandall Stewart TAILQ_ENTRY(sctp_nets) sctp_next; /* next link */ 266f8829a4aSRandall Stewart 267f8829a4aSRandall Stewart /* 268f8829a4aSRandall Stewart * Things on the top half may be able to be split into a common 269f8829a4aSRandall Stewart * structure shared by all. 270f8829a4aSRandall Stewart */ 271f8829a4aSRandall Stewart struct sctp_timer pmtu_timer; 272ca85e948SMichael Tuexen struct sctp_timer hb_timer; 273f8829a4aSRandall Stewart 274f8829a4aSRandall Stewart /* 275f8829a4aSRandall Stewart * The following two in combination equate to a route entry for v6 276f8829a4aSRandall Stewart * or v4. 277f8829a4aSRandall Stewart */ 27817205eccSRandall Stewart struct sctp_net_route ro; 27917205eccSRandall Stewart 280f8829a4aSRandall Stewart /* mtu discovered so far */ 281f8829a4aSRandall Stewart uint32_t mtu; 282f8829a4aSRandall Stewart uint32_t ssthresh; /* not sure about this one for split */ 283a21779f0SRandall Stewart uint32_t last_cwr_tsn; 284a21779f0SRandall Stewart uint32_t cwr_window_tsn; 285a21779f0SRandall Stewart uint32_t ecn_ce_pkt_cnt; 286a21779f0SRandall Stewart uint32_t lost_cnt; 287f8829a4aSRandall Stewart /* smoothed average things for RTT and RTO itself */ 288f8829a4aSRandall Stewart int lastsa; 289f8829a4aSRandall Stewart int lastsv; 290be1d9176SMichael Tuexen uint64_t rtt; /* last measured rtt value in us */ 291239e5865SMichael Tuexen uint32_t RTO; 292f8829a4aSRandall Stewart 293f8829a4aSRandall Stewart /* This is used for SHUTDOWN/SHUTDOWN-ACK/SEND or INIT timers */ 294f8829a4aSRandall Stewart struct sctp_timer rxt_timer; 295f8829a4aSRandall Stewart 296f8829a4aSRandall Stewart /* last time in seconds I sent to it */ 297f8829a4aSRandall Stewart struct timeval last_sent_time; 298299108c5SRandall Stewart union cc_control_data { 299299108c5SRandall Stewart struct htcp htcp_ca; /* JRS - struct used in HTCP algorithm */ 30048b6c649SRandall Stewart struct rtcc_cc rtcc; /* rtcc module cc stuff */ 301299108c5SRandall Stewart } cc_mod; 302f8829a4aSRandall Stewart int ref_count; 303f8829a4aSRandall Stewart 304f8829a4aSRandall Stewart /* Congestion stats per destination */ 305f8829a4aSRandall Stewart /* 306f8829a4aSRandall Stewart * flight size variables and such, sorry Vern, I could not avoid 307f8829a4aSRandall Stewart * this if I wanted performance :> 308f8829a4aSRandall Stewart */ 309f8829a4aSRandall Stewart uint32_t flight_size; 310f8829a4aSRandall Stewart uint32_t cwnd; /* actual cwnd */ 311f8829a4aSRandall Stewart uint32_t prev_cwnd; /* cwnd before any processing */ 312899288aeSRandall Stewart uint32_t ecn_prev_cwnd; /* ECN prev cwnd at first ecn_echo seen in new 313899288aeSRandall Stewart * window */ 314f8829a4aSRandall Stewart uint32_t partial_bytes_acked; /* in CA tracks when to incr a MTU */ 315f8829a4aSRandall Stewart /* tracking variables to avoid the aloc/free in sack processing */ 316f8829a4aSRandall Stewart unsigned int net_ack; 317f8829a4aSRandall Stewart unsigned int net_ack2; 318f8829a4aSRandall Stewart 319f8829a4aSRandall Stewart /* 320b54d3a6cSRandall Stewart * JRS - 5/8/07 - Variable to track last time a destination was 321b54d3a6cSRandall Stewart * active for CMT PF 322b54d3a6cSRandall Stewart */ 323b54d3a6cSRandall Stewart uint32_t last_active; 324b54d3a6cSRandall Stewart 325b54d3a6cSRandall Stewart /* 326f8829a4aSRandall Stewart * CMT variables (iyengar@cis.udel.edu) 327f8829a4aSRandall Stewart */ 328f8829a4aSRandall Stewart uint32_t this_sack_highest_newack; /* tracks highest TSN newly 329f8829a4aSRandall Stewart * acked for a given dest in 330f8829a4aSRandall Stewart * the current SACK. Used in 331f8829a4aSRandall Stewart * SFR and HTNA algos */ 332f8829a4aSRandall Stewart uint32_t pseudo_cumack; /* CMT CUC algorithm. Maintains next expected 333f8829a4aSRandall Stewart * pseudo-cumack for this destination */ 334f8829a4aSRandall Stewart uint32_t rtx_pseudo_cumack; /* CMT CUC algorithm. Maintains next 335f8829a4aSRandall Stewart * expected pseudo-cumack for this 336f8829a4aSRandall Stewart * destination */ 337f8829a4aSRandall Stewart 338f8829a4aSRandall Stewart /* CMT fast recovery variables */ 339f8829a4aSRandall Stewart uint32_t fast_recovery_tsn; 340f8829a4aSRandall Stewart uint32_t heartbeat_random1; 341f8829a4aSRandall Stewart uint32_t heartbeat_random2; 34258bdb691SMichael Tuexen #ifdef INET6 343b10f2dc8SMichael Tuexen uint32_t flowlabel; 34458bdb691SMichael Tuexen #endif 345b10f2dc8SMichael Tuexen uint8_t dscp; 346f8829a4aSRandall Stewart 3475e54f665SRandall Stewart struct timeval start_time; /* time when this net was created */ 3480053ed28SMichael Tuexen uint32_t marked_retrans; /* number or DATA chunks marked for 3490053ed28SMichael Tuexen * timer based retransmissions */ 3505e54f665SRandall Stewart uint32_t marked_fastretrans; 351ca85e948SMichael Tuexen uint32_t heart_beat_delay; /* Heart Beat delay in ms */ 3525e54f665SRandall Stewart 353f8829a4aSRandall Stewart /* if this guy is ok or not ... status */ 354f8829a4aSRandall Stewart uint16_t dest_state; 355ca85e948SMichael Tuexen /* number of timeouts to consider the destination unreachable */ 356f8829a4aSRandall Stewart uint16_t failure_threshold; 357ca85e948SMichael Tuexen /* number of timeouts to consider the destination potentially failed */ 358ca85e948SMichael Tuexen uint16_t pf_threshold; 359ca85e948SMichael Tuexen /* error stats on the destination */ 360f8829a4aSRandall Stewart uint16_t error_count; 361c54a18d2SRandall Stewart /* UDP port number in case of UDP tunneling */ 362c54a18d2SRandall Stewart uint16_t port; 363f8829a4aSRandall Stewart 364f8829a4aSRandall Stewart uint8_t fast_retran_loss_recovery; 365f8829a4aSRandall Stewart uint8_t will_exit_fast_recovery; 366f8829a4aSRandall Stewart /* Flags that probably can be combined into dest_state */ 367f8829a4aSRandall Stewart uint8_t fast_retran_ip; /* fast retransmit in progress */ 368f8829a4aSRandall Stewart uint8_t hb_responded; 369f8829a4aSRandall Stewart uint8_t saw_newack; /* CMT's SFR algorithm flag */ 370f8829a4aSRandall Stewart uint8_t src_addr_selected; /* if we split we move */ 371f8829a4aSRandall Stewart uint8_t indx_of_eligible_next_to_use; 372f8829a4aSRandall Stewart uint8_t addr_is_local; /* its a local address (if known) could move 373f8829a4aSRandall Stewart * in split */ 374f8829a4aSRandall Stewart 375f8829a4aSRandall Stewart /* 376f8829a4aSRandall Stewart * CMT variables (iyengar@cis.udel.edu) 377f8829a4aSRandall Stewart */ 378f8829a4aSRandall Stewart uint8_t find_pseudo_cumack; /* CMT CUC algorithm. Flag used to 379f8829a4aSRandall Stewart * find a new pseudocumack. This flag 380f8829a4aSRandall Stewart * is set after a new pseudo-cumack 381f8829a4aSRandall Stewart * has been received and indicates 382f8829a4aSRandall Stewart * that the sender should find the 383f8829a4aSRandall Stewart * next pseudo-cumack expected for 384f8829a4aSRandall Stewart * this destination */ 385f8829a4aSRandall Stewart uint8_t find_rtx_pseudo_cumack; /* CMT CUCv2 algorithm. Flag used to 386f8829a4aSRandall Stewart * find a new rtx-pseudocumack. This 387f8829a4aSRandall Stewart * flag is set after a new 388f8829a4aSRandall Stewart * rtx-pseudo-cumack has been received 389f8829a4aSRandall Stewart * and indicates that the sender 390f8829a4aSRandall Stewart * should find the next 391f8829a4aSRandall Stewart * rtx-pseudo-cumack expected for this 392f8829a4aSRandall Stewart * destination */ 393f8829a4aSRandall Stewart uint8_t new_pseudo_cumack; /* CMT CUC algorithm. Flag used to 394f8829a4aSRandall Stewart * indicate if a new pseudo-cumack or 395f8829a4aSRandall Stewart * rtx-pseudo-cumack has been received */ 3965e54f665SRandall Stewart uint8_t window_probe; /* Doing a window probe? */ 3979a972525SRandall Stewart uint8_t RTO_measured; /* Have we done the first measure */ 398f8829a4aSRandall Stewart uint8_t last_hs_used; /* index into the last HS table entry we used */ 399899288aeSRandall Stewart uint8_t lan_type; 400f79aab18SRandall Stewart uint8_t rto_needed; 401a4ae38f1SMichael Tuexen uint32_t flowid; 402457b4b88SMichael Tuexen uint8_t flowtype; 403f8829a4aSRandall Stewart }; 404f8829a4aSRandall Stewart 405f8829a4aSRandall Stewart struct sctp_data_chunkrec { 40649656eefSMichael Tuexen uint32_t tsn; /* the TSN of this transmit */ 40749656eefSMichael Tuexen uint32_t mid; /* the message identifier of this transmit */ 40849656eefSMichael Tuexen uint16_t sid; /* the stream number of this guy */ 40949656eefSMichael Tuexen uint32_t ppid; 410f8829a4aSRandall Stewart uint32_t context; /* from send */ 411899288aeSRandall Stewart uint32_t cwnd_at_send; 412f8829a4aSRandall Stewart /* 413f8829a4aSRandall Stewart * part of the Highest sacked algorithm to be able to stroke counts 414f8829a4aSRandall Stewart * on ones that are FR'd. 415f8829a4aSRandall Stewart */ 416f8829a4aSRandall Stewart uint32_t fast_retran_tsn; /* sending_seq at the time of FR */ 417f8829a4aSRandall Stewart struct timeval timetodrop; /* time we drop it from queue */ 41849656eefSMichael Tuexen uint32_t fsn; /* Fragment Sequence Number */ 419f8829a4aSRandall Stewart uint8_t doing_fast_retransmit; 420f8829a4aSRandall Stewart uint8_t rcv_flags; /* flags pulled from data chunk on inbound for 421a5d547adSRandall Stewart * outbound holds sending flags for PR-SCTP. */ 422f8829a4aSRandall Stewart uint8_t state_flags; 423f8829a4aSRandall Stewart uint8_t chunk_was_revoked; 424899288aeSRandall Stewart uint8_t fwd_tsn_cnt; 425f8829a4aSRandall Stewart }; 426f8829a4aSRandall Stewart 427f8829a4aSRandall Stewart TAILQ_HEAD(sctpchunk_listhead, sctp_tmit_chunk); 428f8829a4aSRandall Stewart 429f8829a4aSRandall Stewart /* The lower byte is used to enumerate PR_SCTP policies */ 430f8829a4aSRandall Stewart #define CHUNK_FLAGS_PR_SCTP_TTL SCTP_PR_SCTP_TTL 431f8829a4aSRandall Stewart #define CHUNK_FLAGS_PR_SCTP_BUF SCTP_PR_SCTP_BUF 432f8829a4aSRandall Stewart #define CHUNK_FLAGS_PR_SCTP_RTX SCTP_PR_SCTP_RTX 433f8829a4aSRandall Stewart 434f1cf0245SMichael Tuexen /* The upper byte is used as a bit mask */ 435f8829a4aSRandall Stewart #define CHUNK_FLAGS_FRAGMENT_OK 0x0100 436f8829a4aSRandall Stewart 437f8829a4aSRandall Stewart struct chk_id { 438aa7e5af8SMichael Tuexen uint8_t id; 439aa7e5af8SMichael Tuexen uint8_t can_take_data; 440f8829a4aSRandall Stewart }; 441f8829a4aSRandall Stewart 442f8829a4aSRandall Stewart struct sctp_tmit_chunk { 443f8829a4aSRandall Stewart union { 444f8829a4aSRandall Stewart struct sctp_data_chunkrec data; 445f8829a4aSRandall Stewart struct chk_id chunk_id; 446f8829a4aSRandall Stewart } rec; 447f8829a4aSRandall Stewart struct sctp_association *asoc; /* bp to asoc this belongs to */ 448f8829a4aSRandall Stewart struct timeval sent_rcv_time; /* filled in if RTT being calculated */ 449f8829a4aSRandall Stewart struct mbuf *data; /* pointer to mbuf chain of data */ 450f8829a4aSRandall Stewart struct mbuf *last_mbuf; /* pointer to last mbuf in chain */ 451f8829a4aSRandall Stewart struct sctp_nets *whoTo; 452f8829a4aSRandall Stewart TAILQ_ENTRY(sctp_tmit_chunk) sctp_next; /* next link */ 453f8829a4aSRandall Stewart int32_t sent; /* the send status */ 454f8829a4aSRandall Stewart uint16_t snd_count; /* number of times I sent */ 455f8829a4aSRandall Stewart uint16_t flags; /* flags, such as FRAGMENT_OK */ 456f8829a4aSRandall Stewart uint16_t send_size; 457f8829a4aSRandall Stewart uint16_t book_size; 458f8829a4aSRandall Stewart uint16_t mbcnt; 459830d754dSRandall Stewart uint16_t auth_keyid; 460830d754dSRandall Stewart uint8_t holds_key_ref; /* flag if auth keyid refcount is held */ 461f8829a4aSRandall Stewart uint8_t pad_inplace; 462f8829a4aSRandall Stewart uint8_t do_rtt; 463f8829a4aSRandall Stewart uint8_t book_size_scale; 464f8829a4aSRandall Stewart uint8_t no_fr_allowed; 465f8829a4aSRandall Stewart uint8_t copy_by_ref; 4665e54f665SRandall Stewart uint8_t window_probe; 467f8829a4aSRandall Stewart }; 468f8829a4aSRandall Stewart 469f8829a4aSRandall Stewart struct sctp_queued_to_read { /* sinfo structure Pluse more */ 470f8829a4aSRandall Stewart uint16_t sinfo_stream; /* off the wire */ 471f8829a4aSRandall Stewart uint16_t sinfo_flags; /* SCTP_UNORDERED from wire use SCTP_EOF for 472f8829a4aSRandall Stewart * EOR */ 473f8829a4aSRandall Stewart uint32_t sinfo_ppid; /* off the wire */ 474f8829a4aSRandall Stewart uint32_t sinfo_context; /* pick this up from assoc def context? */ 475f8829a4aSRandall Stewart uint32_t sinfo_timetolive; /* not used by kernel */ 476f8829a4aSRandall Stewart uint32_t sinfo_tsn; /* Use this in reassembly as first TSN */ 477f8829a4aSRandall Stewart uint32_t sinfo_cumtsn; /* Use this in reassembly as last TSN */ 478f8829a4aSRandall Stewart sctp_assoc_t sinfo_assoc_id; /* our assoc id */ 479f8829a4aSRandall Stewart /* Non sinfo stuff */ 48049656eefSMichael Tuexen uint32_t mid; /* Fragment Index */ 481f8829a4aSRandall Stewart uint32_t length; /* length of data */ 482f8829a4aSRandall Stewart uint32_t held_length; /* length held in sb */ 48344249214SRandall Stewart uint32_t top_fsn; /* Highest FSN in queue */ 48444249214SRandall Stewart uint32_t fsn_included; /* Highest FSN in *data portion */ 485f8829a4aSRandall Stewart struct sctp_nets *whoFrom; /* where it came from */ 486f8829a4aSRandall Stewart struct mbuf *data; /* front of the mbuf chain of data with 487f8829a4aSRandall Stewart * PKT_HDR */ 488f8829a4aSRandall Stewart struct mbuf *tail_mbuf; /* used for multi-part data */ 48917205eccSRandall Stewart struct mbuf *aux_data; /* used to hold/cache control if o/s does not 49017205eccSRandall Stewart * take it from us */ 491f8829a4aSRandall Stewart struct sctp_tcb *stcb; /* assoc, used for window update */ 492f8829a4aSRandall Stewart TAILQ_ENTRY(sctp_queued_to_read) next; 49344249214SRandall Stewart TAILQ_ENTRY(sctp_queued_to_read) next_instrm; 49444249214SRandall Stewart struct sctpchunk_listhead reasm; 495f8829a4aSRandall Stewart uint16_t port_from; 496139bc87fSRandall Stewart uint16_t spec_flags; /* Flags to hold the notification field */ 497f8829a4aSRandall Stewart uint8_t do_not_ref_stcb; 498f8829a4aSRandall Stewart uint8_t end_added; 49903b0b021SRandall Stewart uint8_t pdapi_aborted; 50044249214SRandall Stewart uint8_t pdapi_started; 5019a6142d8SRandall Stewart uint8_t some_taken; 50244249214SRandall Stewart uint8_t last_frag_seen; 50344249214SRandall Stewart uint8_t first_frag_seen; 50444249214SRandall Stewart uint8_t on_read_q; 50544249214SRandall Stewart uint8_t on_strm_q; 506f8829a4aSRandall Stewart }; 507f8829a4aSRandall Stewart 50844249214SRandall Stewart #define SCTP_ON_ORDERED 1 50944249214SRandall Stewart #define SCTP_ON_UNORDERED 2 51044249214SRandall Stewart 511f8829a4aSRandall Stewart /* This data structure will be on the outbound 512f8829a4aSRandall Stewart * stream queues. Data will be pulled off from 513f8829a4aSRandall Stewart * the front of the mbuf data and chunk-ified 514f8829a4aSRandall Stewart * by the output routines. We will custom 515f8829a4aSRandall Stewart * fit every chunk we pull to the send/sent 516f8829a4aSRandall Stewart * queue to make up the next full packet 517f8829a4aSRandall Stewart * if we can. An entry cannot be removed 518f8829a4aSRandall Stewart * from the stream_out queue until 519f8829a4aSRandall Stewart * the msg_is_complete flag is set. This 520f8829a4aSRandall Stewart * means at times data/tail_mbuf MIGHT 521f8829a4aSRandall Stewart * be NULL.. If that occurs it happens 522f8829a4aSRandall Stewart * for one of two reasons. Either the user 523f8829a4aSRandall Stewart * is blocked on a send() call and has not 524f8829a4aSRandall Stewart * awoken to copy more data down... OR 525f8829a4aSRandall Stewart * the user is in the explict MSG_EOR mode 526f8829a4aSRandall Stewart * and wrote some data, but has not completed 527f8829a4aSRandall Stewart * sending. 528414499b3SMichael Tuexen * ss_next and scheduled are only used by the FCFS stream scheduler. 529f8829a4aSRandall Stewart */ 530f8829a4aSRandall Stewart struct sctp_stream_queue_pending { 531f8829a4aSRandall Stewart struct mbuf *data; 532f8829a4aSRandall Stewart struct mbuf *tail_mbuf; 533f8829a4aSRandall Stewart struct timeval ts; 534f8829a4aSRandall Stewart struct sctp_nets *net; 535f8829a4aSRandall Stewart TAILQ_ENTRY(sctp_stream_queue_pending) next; 536252f7f93SMichael Tuexen TAILQ_ENTRY(sctp_stream_queue_pending) ss_next; 53744249214SRandall Stewart uint32_t fsn; 538f8829a4aSRandall Stewart uint32_t length; 539f8829a4aSRandall Stewart uint32_t timetolive; 540f8829a4aSRandall Stewart uint32_t ppid; 541f8829a4aSRandall Stewart uint32_t context; 542f8829a4aSRandall Stewart uint16_t sinfo_flags; 54349656eefSMichael Tuexen uint16_t sid; 544a5d547adSRandall Stewart uint16_t act_flags; 545830d754dSRandall Stewart uint16_t auth_keyid; 546830d754dSRandall Stewart uint8_t holds_key_ref; 547f8829a4aSRandall Stewart uint8_t msg_is_complete; 548f8829a4aSRandall Stewart uint8_t some_taken; 549478d3f09SRandall Stewart uint8_t sender_all_done; 550f1f73e57SRandall Stewart uint8_t put_last_out; 55149633f4bSRandall Stewart uint8_t discard_rest; 552f5d30f7fSMichael Tuexen uint8_t processing; 553414499b3SMichael Tuexen bool scheduled; 554f8829a4aSRandall Stewart }; 555f8829a4aSRandall Stewart 556f8829a4aSRandall Stewart /* 557f8829a4aSRandall Stewart * this struct contains info that is used to track inbound stream data and 558f8829a4aSRandall Stewart * help with ordering. 559f8829a4aSRandall Stewart */ 560f8829a4aSRandall Stewart TAILQ_HEAD(sctpwheelunrel_listhead, sctp_stream_in); 561f8829a4aSRandall Stewart struct sctp_stream_in { 562f8829a4aSRandall Stewart struct sctp_readhead inqueue; 56344249214SRandall Stewart struct sctp_readhead uno_inqueue; 56449656eefSMichael Tuexen uint32_t last_mid_delivered; /* used for re-order */ 56549656eefSMichael Tuexen uint16_t sid; 5669a6142d8SRandall Stewart uint8_t delivery_started; 56744249214SRandall Stewart uint8_t pd_api_started; 568f8829a4aSRandall Stewart }; 569f8829a4aSRandall Stewart 570f8829a4aSRandall Stewart TAILQ_HEAD(sctpwheel_listhead, sctp_stream_out); 571f7a77f6fSMichael Tuexen TAILQ_HEAD(sctplist_listhead, sctp_stream_queue_pending); 572f7a77f6fSMichael Tuexen 5737a051c0aSMichael Tuexen /* 5747a051c0aSMichael Tuexen * This union holds all data necessary for 5757a051c0aSMichael Tuexen * different stream schedulers. 5767a051c0aSMichael Tuexen */ 5777a051c0aSMichael Tuexen struct scheduling_data { 5787a051c0aSMichael Tuexen struct sctp_stream_out *locked_on_sending; 5797a051c0aSMichael Tuexen /* circular looking for output selection */ 5807a051c0aSMichael Tuexen struct sctp_stream_out *last_out_stream; 5817a051c0aSMichael Tuexen union { 5827a051c0aSMichael Tuexen struct sctpwheel_listhead wheel; 5837a051c0aSMichael Tuexen struct sctplist_listhead list; 5847a051c0aSMichael Tuexen } out; 5857a051c0aSMichael Tuexen }; 5867a051c0aSMichael Tuexen 587f7a77f6fSMichael Tuexen /* Round-robin schedulers */ 588f7a77f6fSMichael Tuexen struct ss_rr { 589f7a77f6fSMichael Tuexen /* next link in wheel */ 590f7a77f6fSMichael Tuexen TAILQ_ENTRY(sctp_stream_out) next_spoke; 591f7a77f6fSMichael Tuexen }; 592f7a77f6fSMichael Tuexen 593f7a77f6fSMichael Tuexen /* Priority scheduler */ 594f7a77f6fSMichael Tuexen struct ss_prio { 595f7a77f6fSMichael Tuexen /* next link in wheel */ 596f7a77f6fSMichael Tuexen TAILQ_ENTRY(sctp_stream_out) next_spoke; 597f7a77f6fSMichael Tuexen /* priority id */ 598f7a77f6fSMichael Tuexen uint16_t priority; 599f7a77f6fSMichael Tuexen }; 600f7a77f6fSMichael Tuexen 601f7a77f6fSMichael Tuexen /* Fair Bandwidth scheduler */ 602f7a77f6fSMichael Tuexen struct ss_fb { 603f7a77f6fSMichael Tuexen /* next link in wheel */ 604f7a77f6fSMichael Tuexen TAILQ_ENTRY(sctp_stream_out) next_spoke; 605f7a77f6fSMichael Tuexen /* stores message size */ 606f7a77f6fSMichael Tuexen int32_t rounds; 607f7a77f6fSMichael Tuexen }; 608f7a77f6fSMichael Tuexen 609f7a77f6fSMichael Tuexen /* 610f7a77f6fSMichael Tuexen * This union holds all parameters per stream 611f7a77f6fSMichael Tuexen * necessary for different stream schedulers. 612f7a77f6fSMichael Tuexen */ 613414499b3SMichael Tuexen struct scheduling_parameters { 614414499b3SMichael Tuexen union { 615f7a77f6fSMichael Tuexen struct ss_rr rr; 616f7a77f6fSMichael Tuexen struct ss_prio prio; 617f7a77f6fSMichael Tuexen struct ss_fb fb; 618414499b3SMichael Tuexen } ss; 619414499b3SMichael Tuexen bool scheduled; 620f7a77f6fSMichael Tuexen }; 621f7a77f6fSMichael Tuexen 6227cca1775SRandall Stewart /* States for outgoing streams */ 6237cca1775SRandall Stewart #define SCTP_STREAM_CLOSED 0x00 6247cca1775SRandall Stewart #define SCTP_STREAM_OPENING 0x01 6257cca1775SRandall Stewart #define SCTP_STREAM_OPEN 0x02 6267cca1775SRandall Stewart #define SCTP_STREAM_RESET_PENDING 0x03 6277cca1775SRandall Stewart #define SCTP_STREAM_RESET_IN_FLIGHT 0x04 6287cca1775SRandall Stewart 629f7a77f6fSMichael Tuexen /* This struct is used to track the traffic on outbound streams */ 630f8829a4aSRandall Stewart struct sctp_stream_out { 631f8829a4aSRandall Stewart struct sctp_streamhead outqueue; 632414499b3SMichael Tuexen struct scheduling_parameters ss_params; 6337cca1775SRandall Stewart uint32_t chunks_on_queues; /* send queue and sent queue */ 634f0396ad1SMichael Tuexen #if defined(SCTP_DETAILED_STR_STATS) 635f0396ad1SMichael Tuexen uint32_t abandoned_unsent[SCTP_PR_SCTP_MAX + 1]; 636f0396ad1SMichael Tuexen uint32_t abandoned_sent[SCTP_PR_SCTP_MAX + 1]; 637f0396ad1SMichael Tuexen #else 638f0396ad1SMichael Tuexen /* Only the aggregation */ 639f0396ad1SMichael Tuexen uint32_t abandoned_unsent[1]; 640f0396ad1SMichael Tuexen uint32_t abandoned_sent[1]; 641f0396ad1SMichael Tuexen #endif 64263d5b568SMichael Tuexen /* 64363d5b568SMichael Tuexen * For associations using DATA chunks, the lower 16-bit of 64463d5b568SMichael Tuexen * next_mid_ordered are used as the next SSN. 64563d5b568SMichael Tuexen */ 64663d5b568SMichael Tuexen uint32_t next_mid_ordered; 64763d5b568SMichael Tuexen uint32_t next_mid_unordered; 64849656eefSMichael Tuexen uint16_t sid; 649f8829a4aSRandall Stewart uint8_t last_msg_incomplete; 6507cca1775SRandall Stewart uint8_t state; 651f8829a4aSRandall Stewart }; 652f8829a4aSRandall Stewart 6537a051c0aSMichael Tuexen #define SCTP_MAX_STREAMS_AT_ONCE_RESET 200 6547a051c0aSMichael Tuexen 655f8829a4aSRandall Stewart /* used to keep track of the addresses yet to try to add/delete */ 656f8829a4aSRandall Stewart TAILQ_HEAD(sctp_asconf_addrhead, sctp_asconf_addr); 657f8829a4aSRandall Stewart struct sctp_asconf_addr { 658f8829a4aSRandall Stewart TAILQ_ENTRY(sctp_asconf_addr) next; 659f8829a4aSRandall Stewart struct sctp_asconf_addr_param ap; 66042551e99SRandall Stewart struct sctp_ifa *ifa; /* save the ifa for add/del ip */ 661f8829a4aSRandall Stewart uint8_t sent; /* has this been sent yet? */ 662830d754dSRandall Stewart uint8_t special_del; /* not to be used in lookup */ 663f8829a4aSRandall Stewart }; 664f8829a4aSRandall Stewart 665f8829a4aSRandall Stewart struct sctp_scoping { 666f8829a4aSRandall Stewart uint8_t ipv4_addr_legal; 667f8829a4aSRandall Stewart uint8_t ipv6_addr_legal; 668f8829a4aSRandall Stewart uint8_t loopback_scope; 669f8829a4aSRandall Stewart uint8_t ipv4_local_scope; 670f8829a4aSRandall Stewart uint8_t local_scope; 671f8829a4aSRandall Stewart uint8_t site_scope; 672f8829a4aSRandall Stewart }; 673f8829a4aSRandall Stewart 674f42a358aSRandall Stewart #define SCTP_TSN_LOG_SIZE 40 675f42a358aSRandall Stewart 676f42a358aSRandall Stewart struct sctp_tsn_log { 67718e198d3SRandall Stewart void *stcb; 678f42a358aSRandall Stewart uint32_t tsn; 67944249214SRandall Stewart uint32_t seq; 680f42a358aSRandall Stewart uint16_t strm; 681f1f73e57SRandall Stewart uint16_t sz; 682f1f73e57SRandall Stewart uint16_t flgs; 68318e198d3SRandall Stewart uint16_t in_pos; 68418e198d3SRandall Stewart uint16_t in_out; 68544249214SRandall Stewart uint16_t resv; 686f42a358aSRandall Stewart }; 687f42a358aSRandall Stewart 688b54d3a6cSRandall Stewart #define SCTP_FS_SPEC_LOG_SIZE 200 689b54d3a6cSRandall Stewart struct sctp_fs_spec_log { 690b54d3a6cSRandall Stewart uint32_t sent; 691b54d3a6cSRandall Stewart uint32_t total_flight; 692b54d3a6cSRandall Stewart uint32_t tsn; 693b54d3a6cSRandall Stewart uint16_t book; 694b54d3a6cSRandall Stewart uint8_t incr; 695b54d3a6cSRandall Stewart uint8_t decr; 696b54d3a6cSRandall Stewart }; 697d61a0ae0SRandall Stewart 698f8829a4aSRandall Stewart /* 699b54d3a6cSRandall Stewart * JRS - Structure to hold function pointers to the functions responsible 700b54d3a6cSRandall Stewart * for congestion control. 701b54d3a6cSRandall Stewart */ 702b54d3a6cSRandall Stewart 703b54d3a6cSRandall Stewart struct sctp_cc_functions { 704b54d3a6cSRandall Stewart void (*sctp_set_initial_cc_param) (struct sctp_tcb *stcb, struct sctp_nets *net); 705b54d3a6cSRandall Stewart void (*sctp_cwnd_update_after_sack) (struct sctp_tcb *stcb, 706b54d3a6cSRandall Stewart struct sctp_association *asoc, 707b54d3a6cSRandall Stewart int accum_moved, int reneged_all, int will_exit); 708ca85e948SMichael Tuexen void (*sctp_cwnd_update_exit_pf) (struct sctp_tcb *stcb, struct sctp_nets *net); 709b54d3a6cSRandall Stewart void (*sctp_cwnd_update_after_fr) (struct sctp_tcb *stcb, 710b54d3a6cSRandall Stewart struct sctp_association *asoc); 711b54d3a6cSRandall Stewart void (*sctp_cwnd_update_after_timeout) (struct sctp_tcb *stcb, 712b54d3a6cSRandall Stewart struct sctp_nets *net); 713b54d3a6cSRandall Stewart void (*sctp_cwnd_update_after_ecn_echo) (struct sctp_tcb *stcb, 714493d8e5aSRandall Stewart struct sctp_nets *net, int in_window, int num_pkt_lost); 715b54d3a6cSRandall Stewart void (*sctp_cwnd_update_after_packet_dropped) (struct sctp_tcb *stcb, 716b54d3a6cSRandall Stewart struct sctp_nets *net, struct sctp_pktdrop_chunk *cp, 717b54d3a6cSRandall Stewart uint32_t *bottle_bw, uint32_t *on_queue); 718b54d3a6cSRandall Stewart void (*sctp_cwnd_update_after_output) (struct sctp_tcb *stcb, 719b54d3a6cSRandall Stewart struct sctp_nets *net, int burst_limit); 720299108c5SRandall Stewart void (*sctp_cwnd_update_packet_transmitted) (struct sctp_tcb *stcb, 721299108c5SRandall Stewart struct sctp_nets *net); 722299108c5SRandall Stewart void (*sctp_cwnd_update_tsn_acknowledged) (struct sctp_nets *net, 723299108c5SRandall Stewart struct sctp_tmit_chunk *); 724299108c5SRandall Stewart void (*sctp_cwnd_new_transmission_begins) (struct sctp_tcb *stcb, 725299108c5SRandall Stewart struct sctp_nets *net); 726299108c5SRandall Stewart void (*sctp_cwnd_prepare_net_for_sack) (struct sctp_tcb *stcb, 727299108c5SRandall Stewart struct sctp_nets *net); 728299108c5SRandall Stewart int (*sctp_cwnd_socket_option) (struct sctp_tcb *stcb, int set, struct sctp_cc_option *); 729f79aab18SRandall Stewart void (*sctp_rtt_calculated) (struct sctp_tcb *, struct sctp_nets *, struct timeval *); 730b54d3a6cSRandall Stewart }; 731b54d3a6cSRandall Stewart 732f7a77f6fSMichael Tuexen /* 733f7a77f6fSMichael Tuexen * RS - Structure to hold function pointers to the functions responsible 734f7a77f6fSMichael Tuexen * for stream scheduling. 735f7a77f6fSMichael Tuexen */ 736f7a77f6fSMichael Tuexen struct sctp_ss_functions { 737762ae0ecSMichael Tuexen void (*sctp_ss_init) (struct sctp_tcb *stcb, struct sctp_association *asoc); 738f7a77f6fSMichael Tuexen void (*sctp_ss_clear) (struct sctp_tcb *stcb, struct sctp_association *asoc, 739414499b3SMichael Tuexen bool clear_values); 740d1ea5fa9SMichael Tuexen void (*sctp_ss_init_stream) (struct sctp_tcb *stcb, struct sctp_stream_out *strq, struct sctp_stream_out *with_strq); 741f7a77f6fSMichael Tuexen void (*sctp_ss_add_to_stream) (struct sctp_tcb *stcb, struct sctp_association *asoc, 742762ae0ecSMichael Tuexen struct sctp_stream_out *strq, struct sctp_stream_queue_pending *sp); 743414499b3SMichael Tuexen bool (*sctp_ss_is_empty) (struct sctp_tcb *stcb, struct sctp_association *asoc); 744f7a77f6fSMichael Tuexen void (*sctp_ss_remove_from_stream) (struct sctp_tcb *stcb, struct sctp_association *asoc, 745762ae0ecSMichael Tuexen struct sctp_stream_out *strq, struct sctp_stream_queue_pending *sp); 746f7a77f6fSMichael Tuexen struct sctp_stream_out *(*sctp_ss_select_stream) (struct sctp_tcb *stcb, 747f7a77f6fSMichael Tuexen struct sctp_nets *net, struct sctp_association *asoc); 748f7a77f6fSMichael Tuexen void (*sctp_ss_scheduled) (struct sctp_tcb *stcb, struct sctp_nets *net, 749f7a77f6fSMichael Tuexen struct sctp_association *asoc, struct sctp_stream_out *strq, int moved_how_much); 750f7a77f6fSMichael Tuexen void (*sctp_ss_packet_done) (struct sctp_tcb *stcb, struct sctp_nets *net, 751f7a77f6fSMichael Tuexen struct sctp_association *asoc); 752f7a77f6fSMichael Tuexen int (*sctp_ss_get_value) (struct sctp_tcb *stcb, struct sctp_association *asoc, 753f7a77f6fSMichael Tuexen struct sctp_stream_out *strq, uint16_t *value); 754f7a77f6fSMichael Tuexen int (*sctp_ss_set_value) (struct sctp_tcb *stcb, struct sctp_association *asoc, 755f7a77f6fSMichael Tuexen struct sctp_stream_out *strq, uint16_t value); 756414499b3SMichael Tuexen bool (*sctp_ss_is_user_msgs_incomplete) (struct sctp_tcb *stcb, struct sctp_association *asoc); 757f7a77f6fSMichael Tuexen }; 758f7a77f6fSMichael Tuexen 759c54a18d2SRandall Stewart /* used to save ASCONF chunks for retransmission */ 760c54a18d2SRandall Stewart TAILQ_HEAD(sctp_asconf_head, sctp_asconf); 761c54a18d2SRandall Stewart struct sctp_asconf { 762c54a18d2SRandall Stewart TAILQ_ENTRY(sctp_asconf) next; 763c54a18d2SRandall Stewart uint32_t serial_number; 764c54a18d2SRandall Stewart uint16_t snd_count; 765c54a18d2SRandall Stewart struct mbuf *data; 766c54a18d2SRandall Stewart uint16_t len; 767c54a18d2SRandall Stewart }; 768c54a18d2SRandall Stewart 7692afb3e84SRandall Stewart /* used to save ASCONF-ACK chunks for retransmission */ 7702afb3e84SRandall Stewart TAILQ_HEAD(sctp_asconf_ackhead, sctp_asconf_ack); 7712afb3e84SRandall Stewart struct sctp_asconf_ack { 7722afb3e84SRandall Stewart TAILQ_ENTRY(sctp_asconf_ack) next; 7732afb3e84SRandall Stewart uint32_t serial_number; 7742afb3e84SRandall Stewart struct sctp_nets *last_sent_to; 7752afb3e84SRandall Stewart struct mbuf *data; 7762afb3e84SRandall Stewart uint16_t len; 7772afb3e84SRandall Stewart }; 7782afb3e84SRandall Stewart 779b54d3a6cSRandall Stewart /* 780f8829a4aSRandall Stewart * Here we have information about each individual association that we track. 781f8829a4aSRandall Stewart * We probably in production would be more dynamic. But for ease of 782f8829a4aSRandall Stewart * implementation we will have a fixed array that we hunt for in a linear 783f8829a4aSRandall Stewart * fashion. 784f8829a4aSRandall Stewart */ 785f8829a4aSRandall Stewart struct sctp_association { 786f8829a4aSRandall Stewart /* association state */ 787f8829a4aSRandall Stewart int state; 7881b649582SRandall Stewart 789f8829a4aSRandall Stewart /* queue of pending addrs to add/delete */ 790f8829a4aSRandall Stewart struct sctp_asconf_addrhead asconf_queue; 7911b649582SRandall Stewart 792f8829a4aSRandall Stewart struct timeval time_entered; /* time we entered state */ 793f8829a4aSRandall Stewart struct timeval time_last_rcvd; 794f8829a4aSRandall Stewart struct timeval time_last_sent; 795f8829a4aSRandall Stewart struct timeval time_last_sat_advance; 796d61a0ae0SRandall Stewart struct sctp_nonpad_sndrcvinfo def_send; 797f8829a4aSRandall Stewart 798f8829a4aSRandall Stewart /* timers and such */ 799f8829a4aSRandall Stewart struct sctp_timer dack_timer; /* Delayed ack timer */ 8001b649582SRandall Stewart struct sctp_timer asconf_timer; /* asconf */ 801f8829a4aSRandall Stewart struct sctp_timer strreset_timer; /* stream reset */ 8021b649582SRandall Stewart struct sctp_timer shut_guard_timer; /* shutdown guard */ 803f8829a4aSRandall Stewart struct sctp_timer autoclose_timer; /* automatic close timer */ 804851b7298SRandall Stewart struct sctp_timer delete_prim_timer; /* deleting primary dst */ 805f8829a4aSRandall Stewart 8061b649582SRandall Stewart /* list of restricted local addresses */ 80742551e99SRandall Stewart struct sctpladdr sctp_restricted_addrs; 80842551e99SRandall Stewart 8091b649582SRandall Stewart /* last local address pending deletion (waiting for an address add) */ 8101b649582SRandall Stewart struct sctp_ifa *asconf_addr_del_pending; 811851b7298SRandall Stewart /* Deleted primary destination (used to stop timer) */ 812851b7298SRandall Stewart struct sctp_nets *deleted_primary; 8131b649582SRandall Stewart 8141b649582SRandall Stewart struct sctpnetlisthead nets; /* remote address list */ 815f8829a4aSRandall Stewart 816f8829a4aSRandall Stewart /* Free chunk list */ 817f8829a4aSRandall Stewart struct sctpchunk_listhead free_chunks; 818f8829a4aSRandall Stewart 819f8829a4aSRandall Stewart /* Control chunk queue */ 820f8829a4aSRandall Stewart struct sctpchunk_listhead control_send_queue; 821f8829a4aSRandall Stewart 822c54a18d2SRandall Stewart /* ASCONF chunk queue */ 823c54a18d2SRandall Stewart struct sctpchunk_listhead asconf_send_queue; 824c54a18d2SRandall Stewart 825f8829a4aSRandall Stewart /* 826f8829a4aSRandall Stewart * Once a TSN hits the wire it is moved to the sent_queue. We 827f8829a4aSRandall Stewart * maintain two counts here (don't know if any but retran_cnt is 828f8829a4aSRandall Stewart * needed). The idea is that the sent_queue_retran_cnt reflects how 829f8829a4aSRandall Stewart * many chunks have been marked for retranmission by either T3-rxt 830f8829a4aSRandall Stewart * or FR. 831f8829a4aSRandall Stewart */ 832f8829a4aSRandall Stewart struct sctpchunk_listhead sent_queue; 833f8829a4aSRandall Stewart struct sctpchunk_listhead send_queue; 834f8829a4aSRandall Stewart 835252f7f93SMichael Tuexen /* Scheduling queues */ 836d1ea5fa9SMichael Tuexen struct scheduling_data ss_data; 837f8829a4aSRandall Stewart 838f8829a4aSRandall Stewart /* If an iterator is looking at me, this is it */ 839f8829a4aSRandall Stewart struct sctp_iterator *stcb_starting_point_for_iterator; 840f8829a4aSRandall Stewart 841f8829a4aSRandall Stewart /* ASCONF save the last ASCONF-ACK so we can resend it if necessary */ 8422afb3e84SRandall Stewart struct sctp_asconf_ackhead asconf_ack_sent; 843f8829a4aSRandall Stewart 844f8829a4aSRandall Stewart /* 845f8829a4aSRandall Stewart * pointer to last stream reset queued to control queue by us with 846f8829a4aSRandall Stewart * requests. 847f8829a4aSRandall Stewart */ 848f8829a4aSRandall Stewart struct sctp_tmit_chunk *str_reset; 849f8829a4aSRandall Stewart /* 850f8829a4aSRandall Stewart * if Source Address Selection happening, this will rotate through 851f8829a4aSRandall Stewart * the link list. 852f8829a4aSRandall Stewart */ 853f8829a4aSRandall Stewart struct sctp_laddr *last_used_address; 854f8829a4aSRandall Stewart 855f8829a4aSRandall Stewart /* stream arrays */ 856f8829a4aSRandall Stewart struct sctp_stream_in *strmin; 857f8829a4aSRandall Stewart struct sctp_stream_out *strmout; 858f8829a4aSRandall Stewart uint8_t *mapping_array; 859f8829a4aSRandall Stewart /* primary destination to use */ 860f8829a4aSRandall Stewart struct sctp_nets *primary_destination; 861ca85e948SMichael Tuexen struct sctp_nets *alternate; /* If primary is down or PF */ 862f8829a4aSRandall Stewart /* For CMT */ 8638933fa13SRandall Stewart struct sctp_nets *last_net_cmt_send_started; 864f8829a4aSRandall Stewart /* last place I got a data chunk from */ 865f8829a4aSRandall Stewart struct sctp_nets *last_data_chunk_from; 866f8829a4aSRandall Stewart /* last place I got a control from */ 867f8829a4aSRandall Stewart struct sctp_nets *last_control_chunk_from; 868f8829a4aSRandall Stewart 869f8829a4aSRandall Stewart /* 870f8829a4aSRandall Stewart * wait to the point the cum-ack passes req->send_reset_at_tsn for 871f8829a4aSRandall Stewart * any req on the list. 872f8829a4aSRandall Stewart */ 873f8829a4aSRandall Stewart struct sctp_resethead resetHead; 874f8829a4aSRandall Stewart 875f8829a4aSRandall Stewart /* queue of chunks waiting to be sent into the local stack */ 876f8829a4aSRandall Stewart struct sctp_readhead pending_reply_queue; 877f8829a4aSRandall Stewart 878b54d3a6cSRandall Stewart /* JRS - the congestion control functions are in this struct */ 879b54d3a6cSRandall Stewart struct sctp_cc_functions cc_functions; 880b7b84c0eSMichael Tuexen /* 881b7b84c0eSMichael Tuexen * JRS - value to store the currently loaded congestion control 882b7b84c0eSMichael Tuexen * module 883b7b84c0eSMichael Tuexen */ 884b54d3a6cSRandall Stewart uint32_t congestion_control_module; 885f7a77f6fSMichael Tuexen /* RS - the stream scheduling functions are in this struct */ 886f7a77f6fSMichael Tuexen struct sctp_ss_functions ss_functions; 887f7a77f6fSMichael Tuexen /* RS - value to store the currently loaded stream scheduling module */ 888f7a77f6fSMichael Tuexen uint32_t stream_scheduling_module; 889b54d3a6cSRandall Stewart 89042551e99SRandall Stewart uint32_t vrf_id; 891f8829a4aSRandall Stewart uint32_t cookie_preserve_req; 892f8829a4aSRandall Stewart /* ASCONF next seq I am sending out, inits at init-tsn */ 893f8829a4aSRandall Stewart uint32_t asconf_seq_out; 894c54a18d2SRandall Stewart uint32_t asconf_seq_out_acked; 895f8829a4aSRandall Stewart /* ASCONF last received ASCONF from peer, starts at peer's TSN-1 */ 896f8829a4aSRandall Stewart uint32_t asconf_seq_in; 897f8829a4aSRandall Stewart 898f8829a4aSRandall Stewart /* next seq I am sending in str reset messages */ 899f8829a4aSRandall Stewart uint32_t str_reset_seq_out; 900f8829a4aSRandall Stewart /* next seq I am expecting in str reset messages */ 901f8829a4aSRandall Stewart uint32_t str_reset_seq_in; 902f8829a4aSRandall Stewart 903f8829a4aSRandall Stewart /* various verification tag information */ 904f8829a4aSRandall Stewart uint32_t my_vtag; /* The tag to be used. if assoc is re-initited 905f8829a4aSRandall Stewart * by remote end, and I have unlocked this 906f8829a4aSRandall Stewart * will be regenerated to a new random value. */ 907f8829a4aSRandall Stewart uint32_t peer_vtag; /* The peers last tag */ 908f8829a4aSRandall Stewart 909f8829a4aSRandall Stewart uint32_t my_vtag_nonce; 910f8829a4aSRandall Stewart uint32_t peer_vtag_nonce; 911f8829a4aSRandall Stewart 912f8829a4aSRandall Stewart uint32_t assoc_id; 913f8829a4aSRandall Stewart 914f8829a4aSRandall Stewart /* This is the SCTP fragmentation threshold */ 915f8829a4aSRandall Stewart uint32_t smallest_mtu; 916f8829a4aSRandall Stewart 917f8829a4aSRandall Stewart /* 918f8829a4aSRandall Stewart * Special hook for Fast retransmit, allows us to track the highest 919f8829a4aSRandall Stewart * TSN that is NEW in this SACK if gap ack blocks are present. 920f8829a4aSRandall Stewart */ 921f8829a4aSRandall Stewart uint32_t this_sack_highest_gap; 922f8829a4aSRandall Stewart 923f8829a4aSRandall Stewart /* 924f8829a4aSRandall Stewart * The highest consecutive TSN that has been acked by peer on my 925f8829a4aSRandall Stewart * sends 926f8829a4aSRandall Stewart */ 927f8829a4aSRandall Stewart uint32_t last_acked_seq; 928f8829a4aSRandall Stewart 929f8829a4aSRandall Stewart /* The next TSN that I will use in sending. */ 930f8829a4aSRandall Stewart uint32_t sending_seq; 931f8829a4aSRandall Stewart 932f8829a4aSRandall Stewart /* Original seq number I used ??questionable to keep?? */ 933f8829a4aSRandall Stewart uint32_t init_seq_number; 934f8829a4aSRandall Stewart 935f8829a4aSRandall Stewart /* The Advanced Peer Ack Point, as required by the PR-SCTP */ 936f8829a4aSRandall Stewart /* (A1 in Section 4.2) */ 937f8829a4aSRandall Stewart uint32_t advanced_peer_ack_point; 938f8829a4aSRandall Stewart 939f8829a4aSRandall Stewart /* 940f8829a4aSRandall Stewart * The highest consequetive TSN at the bottom of the mapping array 941f8829a4aSRandall Stewart * (for his sends). 942f8829a4aSRandall Stewart */ 943f8829a4aSRandall Stewart uint32_t cumulative_tsn; 944f8829a4aSRandall Stewart /* 945f8829a4aSRandall Stewart * Used to track the mapping array and its offset bits. This MAY be 946f8829a4aSRandall Stewart * lower then cumulative_tsn. 947f8829a4aSRandall Stewart */ 948f8829a4aSRandall Stewart uint32_t mapping_array_base_tsn; 949f8829a4aSRandall Stewart /* 950f8829a4aSRandall Stewart * used to track highest TSN we have received and is listed in the 951f8829a4aSRandall Stewart * mapping array. 952f8829a4aSRandall Stewart */ 953f8829a4aSRandall Stewart uint32_t highest_tsn_inside_map; 954f8829a4aSRandall Stewart 955830d754dSRandall Stewart /* EY - new NR variables used for nr_sack based on mapping_array */ 956830d754dSRandall Stewart uint8_t *nr_mapping_array; 957830d754dSRandall Stewart uint32_t highest_tsn_inside_nr_map; 958830d754dSRandall Stewart 959f8829a4aSRandall Stewart uint32_t fast_recovery_tsn; 960f8829a4aSRandall Stewart uint32_t sat_t3_recovery_tsn; 961f8829a4aSRandall Stewart uint32_t tsn_last_delivered; 962f8829a4aSRandall Stewart /* 963cd0a4ff6SPedro F. Giffuni * For the pd-api we should re-write this a bit more efficient. We 964f8829a4aSRandall Stewart * could have multiple sctp_queued_to_read's that we are building at 965f8829a4aSRandall Stewart * once. Now we only do this when we get ready to deliver to the 966f8829a4aSRandall Stewart * socket buffer. Note that we depend on the fact that the struct is 967f8829a4aSRandall Stewart * "stuck" on the read queue until we finish all the pd-api. 968f8829a4aSRandall Stewart */ 969f8829a4aSRandall Stewart struct sctp_queued_to_read *control_pdapi; 970f8829a4aSRandall Stewart 971f8829a4aSRandall Stewart uint32_t tsn_of_pdapi_last_delivered; 972f8829a4aSRandall Stewart uint32_t pdapi_ppid; 973f8829a4aSRandall Stewart uint32_t context; 974f8829a4aSRandall Stewart uint32_t last_reset_action[SCTP_MAX_RESET_PARAMS]; 975f8829a4aSRandall Stewart uint32_t last_sending_seq[SCTP_MAX_RESET_PARAMS]; 976f8829a4aSRandall Stewart uint32_t last_base_tsnsent[SCTP_MAX_RESET_PARAMS]; 977f42a358aSRandall Stewart #ifdef SCTP_ASOCLOG_OF_TSNS 978f42a358aSRandall Stewart /* 979f42a358aSRandall Stewart * special log - This adds considerable size to the asoc, but 980f42a358aSRandall Stewart * provides a log that you can use to detect problems via kgdb. 981f42a358aSRandall Stewart */ 982f42a358aSRandall Stewart struct sctp_tsn_log in_tsnlog[SCTP_TSN_LOG_SIZE]; 983f42a358aSRandall Stewart struct sctp_tsn_log out_tsnlog[SCTP_TSN_LOG_SIZE]; 98418e198d3SRandall Stewart uint32_t cumack_log[SCTP_TSN_LOG_SIZE]; 985b201f536SRandall Stewart uint32_t cumack_logsnt[SCTP_TSN_LOG_SIZE]; 986f42a358aSRandall Stewart uint16_t tsn_in_at; 987f42a358aSRandall Stewart uint16_t tsn_out_at; 988f1f73e57SRandall Stewart uint16_t tsn_in_wrapped; 989f1f73e57SRandall Stewart uint16_t tsn_out_wrapped; 99018e198d3SRandall Stewart uint16_t cumack_log_at; 991b201f536SRandall Stewart uint16_t cumack_log_atsnt; 992f42a358aSRandall Stewart #endif /* SCTP_ASOCLOG_OF_TSNS */ 993b54d3a6cSRandall Stewart #ifdef SCTP_FS_SPEC_LOG 994b54d3a6cSRandall Stewart struct sctp_fs_spec_log fslog[SCTP_FS_SPEC_LOG_SIZE]; 995b54d3a6cSRandall Stewart uint16_t fs_index; 996b54d3a6cSRandall Stewart #endif 997b54d3a6cSRandall Stewart 998f8829a4aSRandall Stewart /* 999f8829a4aSRandall Stewart * window state information and smallest MTU that I use to bound 1000f8829a4aSRandall Stewart * segmentation 1001f8829a4aSRandall Stewart */ 1002f8829a4aSRandall Stewart uint32_t peers_rwnd; 1003f8829a4aSRandall Stewart uint32_t my_rwnd; 1004f8829a4aSRandall Stewart uint32_t my_last_reported_rwnd; 1005d61a0ae0SRandall Stewart uint32_t sctp_frag_point; 1006f8829a4aSRandall Stewart 1007f8829a4aSRandall Stewart uint32_t total_output_queue_size; 1008f8829a4aSRandall Stewart 10094e88d37aSMichael Tuexen uint32_t sb_cc; /* shadow of sb_cc */ 10109f22f500SRandall Stewart uint32_t sb_send_resv; /* amount reserved on a send */ 1011c4739e2fSRandall Stewart uint32_t my_rwnd_control_len; /* shadow of sb_mbcnt used for rwnd 1012c4739e2fSRandall Stewart * control */ 101358bdb691SMichael Tuexen #ifdef INET6 1014f8829a4aSRandall Stewart uint32_t default_flowlabel; 101558bdb691SMichael Tuexen #endif 1016f8829a4aSRandall Stewart uint32_t pr_sctp_cnt; 1017493d8e5aSRandall Stewart int ctrl_queue_cnt; /* could be removed REM - NO IT CAN'T!! RRS */ 1018f8829a4aSRandall Stewart /* 1019f8829a4aSRandall Stewart * All outbound datagrams queue into this list from the individual 1020f8829a4aSRandall Stewart * stream queue. Here they get assigned a TSN and then await 1021f8829a4aSRandall Stewart * sending. The stream seq comes when it is first put in the 1022f8829a4aSRandall Stewart * individual str queue 1023f8829a4aSRandall Stewart */ 1024f8829a4aSRandall Stewart unsigned int stream_queue_cnt; 1025f8829a4aSRandall Stewart unsigned int send_queue_cnt; 1026f8829a4aSRandall Stewart unsigned int sent_queue_cnt; 1027f8829a4aSRandall Stewart unsigned int sent_queue_cnt_removeable; 1028f8829a4aSRandall Stewart /* 1029f8829a4aSRandall Stewart * Number on sent queue that are marked for retran until this value 1030f8829a4aSRandall Stewart * is 0 we only send one packet of retran'ed data. 1031f8829a4aSRandall Stewart */ 1032f8829a4aSRandall Stewart unsigned int sent_queue_retran_cnt; 1033f8829a4aSRandall Stewart 1034f8829a4aSRandall Stewart unsigned int size_on_reasm_queue; 1035f8829a4aSRandall Stewart unsigned int cnt_on_reasm_queue; 103644fbe462SRandall Stewart unsigned int fwd_tsn_cnt; 1037f8829a4aSRandall Stewart /* amount of data (bytes) currently in flight (on all destinations) */ 1038f8829a4aSRandall Stewart unsigned int total_flight; 1039f8829a4aSRandall Stewart /* Total book size in flight */ 1040f8829a4aSRandall Stewart unsigned int total_flight_count; /* count of chunks used with 1041f8829a4aSRandall Stewart * book total */ 1042f8829a4aSRandall Stewart /* count of destinaton nets and list of destination nets */ 1043f8829a4aSRandall Stewart unsigned int numnets; 1044f8829a4aSRandall Stewart 1045f8829a4aSRandall Stewart /* Total error count on this association */ 1046f8829a4aSRandall Stewart unsigned int overall_error_count; 1047f8829a4aSRandall Stewart 1048f8829a4aSRandall Stewart unsigned int cnt_msg_on_sb; 1049f8829a4aSRandall Stewart 1050f8829a4aSRandall Stewart /* All stream count of chunks for delivery */ 1051f8829a4aSRandall Stewart unsigned int size_on_all_streams; 1052f8829a4aSRandall Stewart unsigned int cnt_on_all_streams; 1053f8829a4aSRandall Stewart 1054ca85e948SMichael Tuexen /* Heart Beat delay in ms */ 1055ca85e948SMichael Tuexen uint32_t heart_beat_delay; 1056f8829a4aSRandall Stewart 1057f8829a4aSRandall Stewart /* autoclose */ 1058d5d190f2SMichael Tuexen uint32_t sctp_autoclose_ticks; 1059f8829a4aSRandall Stewart 1060f8829a4aSRandall Stewart /* how many preopen streams we have */ 1061f8829a4aSRandall Stewart unsigned int pre_open_streams; 1062f8829a4aSRandall Stewart 1063f8829a4aSRandall Stewart /* How many streams I support coming into me */ 1064f8829a4aSRandall Stewart unsigned int max_inbound_streams; 1065f8829a4aSRandall Stewart 1066f8829a4aSRandall Stewart /* the cookie life I award for any cookie, in seconds */ 1067239e5865SMichael Tuexen uint32_t cookie_life; 1068f8829a4aSRandall Stewart /* time to delay acks for */ 1069f8829a4aSRandall Stewart unsigned int delayed_ack; 107042551e99SRandall Stewart unsigned int old_delayed_ack; 107142551e99SRandall Stewart unsigned int sack_freq; 107242551e99SRandall Stewart unsigned int data_pkts_seen; 1073f8829a4aSRandall Stewart 1074f8829a4aSRandall Stewart unsigned int numduptsns; 1075f8829a4aSRandall Stewart int dup_tsns[SCTP_MAX_DUP_TSNS]; 1076239e5865SMichael Tuexen uint32_t initial_init_rto_max; /* initial RTO for INIT's */ 1077239e5865SMichael Tuexen uint32_t initial_rto; /* initial send RTO */ 1078239e5865SMichael Tuexen uint32_t minrto; /* per assoc RTO-MIN */ 1079239e5865SMichael Tuexen uint32_t maxrto; /* per assoc RTO-MAX */ 1080f8829a4aSRandall Stewart 1081f8829a4aSRandall Stewart /* authentication fields */ 1082f8829a4aSRandall Stewart sctp_auth_chklist_t *local_auth_chunks; 1083f8829a4aSRandall Stewart sctp_auth_chklist_t *peer_auth_chunks; 1084f8829a4aSRandall Stewart sctp_hmaclist_t *local_hmacs; /* local HMACs supported */ 1085f8829a4aSRandall Stewart sctp_hmaclist_t *peer_hmacs; /* peer HMACs supported */ 1086f8829a4aSRandall Stewart struct sctp_keyhead shared_keys; /* assoc's shared keys */ 1087f8829a4aSRandall Stewart sctp_authinfo_t authinfo; /* randoms, cached keys */ 1088f8829a4aSRandall Stewart /* 1089f8829a4aSRandall Stewart * refcnt to block freeing when a sender or receiver is off coping 1090f8829a4aSRandall Stewart * user data in. 1091f8829a4aSRandall Stewart */ 109250cec919SRandall Stewart uint32_t refcnt; 109350cec919SRandall Stewart uint32_t chunks_on_out_queue; /* total chunks floating around, 109450cec919SRandall Stewart * locked by send socket buffer */ 10952afb3e84SRandall Stewart uint32_t peers_adaptation; 109628a6addeSMichael Tuexen uint32_t default_mtu; 109750cec919SRandall Stewart uint16_t peer_hmac_id; /* peer HMAC id to send */ 1098f8829a4aSRandall Stewart 1099f8829a4aSRandall Stewart /* 1100f8829a4aSRandall Stewart * Being that we have no bag to collect stale cookies, and that we 1101f8829a4aSRandall Stewart * really would not want to anyway.. we will count them in this 1102f8829a4aSRandall Stewart * counter. We of course feed them to the pigeons right away (I have 1103f8829a4aSRandall Stewart * always thought of pigeons as flying rats). 1104f8829a4aSRandall Stewart */ 1105f8829a4aSRandall Stewart uint16_t stale_cookie_count; 1106f8829a4aSRandall Stewart 1107f8829a4aSRandall Stewart /* 1108f8829a4aSRandall Stewart * For the partial delivery API, if up, invoked this is what last 1109f8829a4aSRandall Stewart * TSN I delivered 1110f8829a4aSRandall Stewart */ 1111f8829a4aSRandall Stewart uint16_t str_of_pdapi; 1112f8829a4aSRandall Stewart uint16_t ssn_of_pdapi; 1113f8829a4aSRandall Stewart 1114f8829a4aSRandall Stewart /* counts of actual built streams. Allocation may be more however */ 1115f8829a4aSRandall Stewart /* could re-arrange to optimize space here. */ 1116f8829a4aSRandall Stewart uint16_t streamincnt; 1117f8829a4aSRandall Stewart uint16_t streamoutcnt; 1118ea44232bSRandall Stewart uint16_t strm_realoutsize; 1119c4e848b7SRandall Stewart uint16_t strm_pending_add_size; 1120f8829a4aSRandall Stewart /* my maximum number of retrans of INIT and SEND */ 1121f8829a4aSRandall Stewart /* copied from SCTP but should be individually setable */ 1122f8829a4aSRandall Stewart uint16_t max_init_times; 1123f8829a4aSRandall Stewart uint16_t max_send_times; 1124f8829a4aSRandall Stewart 1125f8829a4aSRandall Stewart uint16_t def_net_failure; 1126f8829a4aSRandall Stewart 1127ca85e948SMichael Tuexen uint16_t def_net_pf_threshold; 1128ca85e948SMichael Tuexen 1129f8829a4aSRandall Stewart /* 1130f8829a4aSRandall Stewart * lock flag: 0 is ok to send, 1+ (duals as a retran count) is 1131f8829a4aSRandall Stewart * awaiting ACK 1132f8829a4aSRandall Stewart */ 1133f8829a4aSRandall Stewart uint16_t mapping_array_size; 1134f8829a4aSRandall Stewart 1135f8829a4aSRandall Stewart uint16_t last_strm_seq_delivered; 1136f8829a4aSRandall Stewart uint16_t last_strm_no_delivered; 1137f8829a4aSRandall Stewart 1138f8829a4aSRandall Stewart uint16_t last_revoke_count; 1139f8829a4aSRandall Stewart int16_t num_send_timers_up; 1140f8829a4aSRandall Stewart 1141f8829a4aSRandall Stewart uint16_t stream_locked_on; 1142f8829a4aSRandall Stewart uint16_t ecn_echo_cnt_onq; 1143f8829a4aSRandall Stewart 1144f8829a4aSRandall Stewart uint16_t free_chunk_cnt; 1145f8829a4aSRandall Stewart uint8_t stream_locked; 1146f8829a4aSRandall Stewart uint8_t authenticated; /* packet authenticated ok */ 1147f8829a4aSRandall Stewart /* 114842551e99SRandall Stewart * This flag indicates that a SACK need to be sent. Initially this 114942551e99SRandall Stewart * is 1 to send the first sACK immediately. 1150f8829a4aSRandall Stewart */ 115142551e99SRandall Stewart uint8_t send_sack; 1152f8829a4aSRandall Stewart 1153899288aeSRandall Stewart /* max burst of new packets into the network */ 115490fed1d8SMichael Tuexen uint32_t max_burst; 1155899288aeSRandall Stewart /* max burst of fast retransmit packets */ 1156899288aeSRandall Stewart uint32_t fr_max_burst; 1157f8829a4aSRandall Stewart 1158f8829a4aSRandall Stewart uint8_t sat_network; /* RTT is in range of sat net or greater */ 1159f8829a4aSRandall Stewart uint8_t sat_network_lockout; /* lockout code */ 1160f8829a4aSRandall Stewart uint8_t burst_limit_applied; /* Burst limit in effect at last send? */ 1161f8829a4aSRandall Stewart /* flag goes on when we are doing a partial delivery api */ 1162f8829a4aSRandall Stewart uint8_t hb_random_values[4]; 1163f8829a4aSRandall Stewart uint8_t fragmented_delivery_inprogress; 1164f8829a4aSRandall Stewart uint8_t fragment_flags; 1165f8829a4aSRandall Stewart uint8_t last_flags_delivered; 1166f8829a4aSRandall Stewart uint8_t hb_ect_randombit; 1167f8829a4aSRandall Stewart uint8_t hb_random_idx; 1168b10f2dc8SMichael Tuexen uint8_t default_dscp; 11691b649582SRandall Stewart uint8_t asconf_del_pending; /* asconf delete last addr pending */ 11707cca1775SRandall Stewart uint8_t trigger_reset; 1171f8829a4aSRandall Stewart /* 1172f8829a4aSRandall Stewart * This value, plus all other ack'd but above cum-ack is added 1173f8829a4aSRandall Stewart * together to cross check against the bit that we have yet to 1174f8829a4aSRandall Stewart * define (probably in the SACK). When the cum-ack is updated, this 1175f8829a4aSRandall Stewart * sum is updated as well. 1176f8829a4aSRandall Stewart */ 1177493d8e5aSRandall Stewart 1178dd973b0eSMichael Tuexen /* Flags whether an extension is supported or not */ 1179f342355aSMichael Tuexen uint8_t ecn_supported; 1180dd973b0eSMichael Tuexen uint8_t prsctp_supported; 1181c79bec9cSMichael Tuexen uint8_t auth_supported; 1182c79bec9cSMichael Tuexen uint8_t asconf_supported; 1183317e00efSMichael Tuexen uint8_t reconfig_supported; 1184caea9879SMichael Tuexen uint8_t nrsack_supported; 1185cb9b8e6fSMichael Tuexen uint8_t pktdrop_supported; 118644249214SRandall Stewart uint8_t idata_supported; 1187f8829a4aSRandall Stewart 1188c4e848b7SRandall Stewart /* Did the peer make the stream config (add out) request */ 1189c4e848b7SRandall Stewart uint8_t peer_req_out; 1190c4e848b7SRandall Stewart 1191c4e848b7SRandall Stewart uint8_t local_strreset_support; 1192830d754dSRandall Stewart uint8_t peer_supports_nat; 1193f8829a4aSRandall Stewart 1194a1cb341bSMichael Tuexen struct sctp_scoping scope; 1195f8829a4aSRandall Stewart /* flags to handle send alternate net tracking */ 1196f8829a4aSRandall Stewart uint8_t used_alt_asconfack; 1197f8829a4aSRandall Stewart uint8_t fast_retran_loss_recovery; 1198f8829a4aSRandall Stewart uint8_t sat_t3_loss_recovery; 1199f8829a4aSRandall Stewart uint8_t dropped_special_cnt; 1200f8829a4aSRandall Stewart uint8_t seen_a_sack_this_pkt; 1201f8829a4aSRandall Stewart uint8_t stream_reset_outstanding; 1202f8829a4aSRandall Stewart uint8_t stream_reset_out_is_outstanding; 1203f8829a4aSRandall Stewart uint8_t delayed_connection; 1204f8829a4aSRandall Stewart uint8_t ifp_had_enobuf; 1205f8829a4aSRandall Stewart uint8_t saw_sack_with_frags; 1206d9c5cfeaSMichael Tuexen uint8_t saw_sack_with_nr_frags; 1207830d754dSRandall Stewart uint8_t in_asocid_hash; 1208f8829a4aSRandall Stewart uint8_t assoc_up_sent; 12092afb3e84SRandall Stewart uint8_t adaptation_needed; 12102afb3e84SRandall Stewart uint8_t adaptation_sent; 1211f8829a4aSRandall Stewart /* CMT variables */ 1212f8829a4aSRandall Stewart uint8_t cmt_dac_pkts_rcvd; 1213f8829a4aSRandall Stewart uint8_t sctp_cmt_on_off; 1214f8829a4aSRandall Stewart uint8_t iam_blocking; 121544b7479bSRandall Stewart uint8_t cookie_how[8]; 1216b54d3a6cSRandall Stewart /* JRS 5/21/07 - CMT PF variable */ 1217b54d3a6cSRandall Stewart uint8_t sctp_cmt_pf; 1218299108c5SRandall Stewart uint8_t use_precise_time; 121906c9f9bdSMichael Tuexen uint64_t sctp_features; 122059b6d5beSMichael Tuexen uint32_t max_cwnd; 1221c9c58059SMichael Tuexen uint16_t port; /* remote UDP encapsulation port */ 1222f8829a4aSRandall Stewart /* 1223f8829a4aSRandall Stewart * The mapping array is used to track out of order sequences above 1224f8829a4aSRandall Stewart * last_acked_seq. 0 indicates packet missing 1 indicates packet 1225f8829a4aSRandall Stewart * rec'd. We slide it up every time we raise last_acked_seq and 0 1226f8829a4aSRandall Stewart * trailing locactions out. If I get a TSN above the array 1227f8829a4aSRandall Stewart * mappingArraySz, I discard the datagram and let retransmit happen. 1228f8829a4aSRandall Stewart */ 1229f42a358aSRandall Stewart uint32_t marked_retrans; 1230f42a358aSRandall Stewart uint32_t timoinit; 1231f42a358aSRandall Stewart uint32_t timodata; 1232f42a358aSRandall Stewart uint32_t timosack; 1233f42a358aSRandall Stewart uint32_t timoshutdown; 1234f42a358aSRandall Stewart uint32_t timoheartbeat; 1235f42a358aSRandall Stewart uint32_t timocookie; 1236f42a358aSRandall Stewart uint32_t timoshutdownack; 1237f42a358aSRandall Stewart struct timeval start_time; 1238f42a358aSRandall Stewart struct timeval discontinuity_time; 1239f0396ad1SMichael Tuexen uint64_t abandoned_unsent[SCTP_PR_SCTP_MAX + 1]; 1240f0396ad1SMichael Tuexen uint64_t abandoned_sent[SCTP_PR_SCTP_MAX + 1]; 1241f8829a4aSRandall Stewart }; 1242f8829a4aSRandall Stewart 1243f8829a4aSRandall Stewart #endif 1244