Squashed 'third_party/rawrtc/usrsctp/' content from commit bd1a92db3
Change-Id: If227cd6edd3243ac26044056b7427ae5bca71ef8
git-subtree-dir: third_party/rawrtc/usrsctp
git-subtree-split: bd1a92db338ba1e57453637959a127032bb566ff
diff --git a/usrsctplib/netinet/sctp_structs.h b/usrsctplib/netinet/sctp_structs.h
new file mode 100755
index 0000000..b5f3ef2
--- /dev/null
+++ b/usrsctplib/netinet/sctp_structs.h
@@ -0,0 +1,1304 @@
+/*-
+ * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved.
+ * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
+ * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * a) Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * b) Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the distribution.
+ *
+ * c) Neither the name of Cisco Systems, Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifdef __FreeBSD__
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: head/sys/netinet/sctp_structs.h 310590 2016-12-26 11:06:41Z tuexen $");
+#endif
+
+#ifndef _NETINET_SCTP_STRUCTS_H_
+#define _NETINET_SCTP_STRUCTS_H_
+
+#include <netinet/sctp_os.h>
+#include <netinet/sctp_header.h>
+#include <netinet/sctp_auth.h>
+
+struct sctp_timer {
+ sctp_os_timer_t timer;
+
+ int type;
+ /*
+ * Depending on the timer type these will be setup and cast with the
+ * appropriate entity.
+ */
+ void *ep;
+ void *tcb;
+ void *net;
+#if defined(__FreeBSD__) && __FreeBSD_version >= 800000
+ void *vnet;
+#endif
+
+ /* for sanity checking */
+ void *self;
+ uint32_t ticks;
+ uint32_t stopped_from;
+};
+
+
+struct sctp_foo_stuff {
+ struct sctp_inpcb *inp;
+ uint32_t lineno;
+ uint32_t ticks;
+ int updown;
+};
+
+
+/*
+ * This is the information we track on each interface that we know about from
+ * the distant end.
+ */
+TAILQ_HEAD(sctpnetlisthead, sctp_nets);
+
+struct sctp_stream_reset_list {
+ TAILQ_ENTRY(sctp_stream_reset_list) next_resp;
+ uint32_t seq;
+ uint32_t tsn;
+ uint32_t number_entries;
+ uint16_t list_of_streams[];
+};
+
+TAILQ_HEAD(sctp_resethead, sctp_stream_reset_list);
+
+/*
+ * Users of the iterator need to malloc a iterator with a call to
+ * sctp_initiate_iterator(inp_func, assoc_func, inp_func, pcb_flags, pcb_features,
+ * asoc_state, void-ptr-arg, uint32-arg, end_func, inp);
+ *
+ * Use the following two defines if you don't care what pcb flags are on the EP
+ * and/or you don't care what state the association is in.
+ *
+ * Note that if you specify an INP as the last argument then ONLY each
+ * association of that single INP will be executed upon. Note that the pcb
+ * flags STILL apply so if the inp you specify has different pcb_flags then
+ * what you put in pcb_flags nothing will happen. use SCTP_PCB_ANY_FLAGS to
+ * assure the inp you specify gets treated.
+ */
+#define SCTP_PCB_ANY_FLAGS 0x00000000
+#define SCTP_PCB_ANY_FEATURES 0x00000000
+#define SCTP_ASOC_ANY_STATE 0x00000000
+
+typedef void (*asoc_func) (struct sctp_inpcb *, struct sctp_tcb *, void *ptr,
+ uint32_t val);
+typedef int (*inp_func) (struct sctp_inpcb *, void *ptr, uint32_t val);
+typedef void (*end_func) (void *ptr, uint32_t val);
+
+#if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP)
+/* whats on the mcore control struct */
+struct sctp_mcore_queue {
+ TAILQ_ENTRY(sctp_mcore_queue) next;
+#if defined(__FreeBSD__) && __FreeBSD_version >= 801000
+ struct vnet *vn;
+#endif
+ struct mbuf *m;
+ int off;
+ int v6;
+};
+
+TAILQ_HEAD(sctp_mcore_qhead, sctp_mcore_queue);
+
+struct sctp_mcore_ctrl {
+ SCTP_PROCESS_STRUCT thread_proc;
+ struct sctp_mcore_qhead que;
+ struct mtx core_mtx;
+ struct mtx que_mtx;
+ int running;
+ int cpuid;
+};
+
+
+#endif
+
+
+struct sctp_iterator {
+ TAILQ_ENTRY(sctp_iterator) sctp_nxt_itr;
+#if defined(__FreeBSD__) && __FreeBSD_version >= 801000
+ struct vnet *vn;
+#endif
+ struct sctp_timer tmr;
+ struct sctp_inpcb *inp; /* current endpoint */
+ struct sctp_tcb *stcb; /* current* assoc */
+ struct sctp_inpcb *next_inp; /* special hook to skip to */
+ asoc_func function_assoc; /* per assoc function */
+ inp_func function_inp; /* per endpoint function */
+ inp_func function_inp_end; /* end INP function */
+ end_func function_atend; /* iterator completion function */
+ void *pointer; /* pointer for apply func to use */
+ uint32_t val; /* value for apply func to use */
+ uint32_t pcb_flags; /* endpoint flags being checked */
+ uint32_t pcb_features; /* endpoint features being checked */
+ uint32_t asoc_state; /* assoc state being checked */
+ uint32_t iterator_flags;
+ uint8_t no_chunk_output;
+ uint8_t done_current_ep;
+};
+/* iterator_flags values */
+#define SCTP_ITERATOR_DO_ALL_INP 0x00000001
+#define SCTP_ITERATOR_DO_SINGLE_INP 0x00000002
+
+
+TAILQ_HEAD(sctpiterators, sctp_iterator);
+
+struct sctp_copy_all {
+ struct sctp_inpcb *inp; /* ep */
+ struct mbuf *m;
+ struct sctp_sndrcvinfo sndrcv;
+ int sndlen;
+ int cnt_sent;
+ int cnt_failed;
+};
+
+struct sctp_asconf_iterator {
+ struct sctpladdr list_of_work;
+ int cnt;
+};
+
+struct iterator_control {
+#if defined(__FreeBSD__)
+ struct mtx ipi_iterator_wq_mtx;
+ struct mtx it_mtx;
+#elif defined(__APPLE__)
+ lck_mtx_t *ipi_iterator_wq_mtx;
+ lck_mtx_t *it_mtx;
+#elif defined(SCTP_PROCESS_LEVEL_LOCKS)
+#if defined(__Userspace__)
+ userland_mutex_t ipi_iterator_wq_mtx;
+ userland_mutex_t it_mtx;
+ userland_cond_t iterator_wakeup;
+#else
+ pthread_mutex_t ipi_iterator_wq_mtx;
+ pthread_mutex_t it_mtx;
+ pthread_cond_t iterator_wakeup;
+#endif
+#elif defined(__Windows__)
+ struct spinlock it_lock;
+ struct spinlock ipi_iterator_wq_lock;
+ KEVENT iterator_wakeup[2];
+ PFILE_OBJECT iterator_thread_obj;
+#else
+ void *it_mtx;
+#endif
+#if !defined(__Windows__)
+#if !defined(__Userspace__)
+ SCTP_PROCESS_STRUCT thread_proc;
+#else
+ userland_thread_t thread_proc;
+#endif
+#endif
+ struct sctpiterators iteratorhead;
+ struct sctp_iterator *cur_it;
+ uint32_t iterator_running;
+ uint32_t iterator_flags;
+};
+#if !defined(__FreeBSD__)
+#define SCTP_ITERATOR_MUST_EXIT 0x00000001
+#define SCTP_ITERATOR_EXITED 0x00000002
+#endif
+#define SCTP_ITERATOR_STOP_CUR_IT 0x00000004
+#define SCTP_ITERATOR_STOP_CUR_INP 0x00000008
+
+struct sctp_net_route {
+ sctp_rtentry_t *ro_rt;
+#if defined(__FreeBSD__)
+#if __FreeBSD_version < 1100093
+#if __FreeBSD_version >= 800000
+ void *ro_lle;
+#endif
+#if __FreeBSD_version >= 900000
+ void *ro_ia;
+ int ro_flags;
+#endif
+#else
+#if __FreeBSD_version >= 1100116
+ struct llentry *ro_lle;
+#endif
+ char *ro_prepend;
+ uint16_t ro_plen;
+ uint16_t ro_flags;
+ uint16_t ro_mtu;
+ uint16_t spare;
+#endif
+#endif
+#if defined(__APPLE__)
+#if !defined(APPLE_LEOPARD) && !defined(APPLE_SNOWLEOPARD) && !defined(APPLE_LION) && !defined(APPLE_MOUNTAINLION)
+ struct ifaddr *ro_srcia;
+#endif
+#if !defined(APPLE_LEOPARD)
+ uint32_t ro_flags;
+#endif
+#endif
+ union sctp_sockstore _l_addr; /* remote peer addr */
+ struct sctp_ifa *_s_addr; /* our selected src addr */
+};
+
+struct htcp {
+ uint16_t alpha; /* Fixed point arith, << 7 */
+ uint8_t beta; /* Fixed point arith, << 7 */
+ uint8_t modeswitch; /* Delay modeswitch until we had at least one congestion event */
+ uint32_t last_cong; /* Time since last congestion event end */
+ uint32_t undo_last_cong;
+ uint16_t bytes_acked;
+ uint32_t bytecount;
+ uint32_t minRTT;
+ uint32_t maxRTT;
+
+ uint32_t undo_maxRTT;
+ uint32_t undo_old_maxB;
+
+ /* Bandwidth estimation */
+ uint32_t minB;
+ uint32_t maxB;
+ uint32_t old_maxB;
+ uint32_t Bi;
+ uint32_t lasttime;
+};
+
+struct rtcc_cc {
+ struct timeval tls; /* The time we started the sending */
+ uint64_t lbw; /* Our last estimated bw */
+ uint64_t lbw_rtt; /* RTT at bw estimate */
+ uint64_t bw_bytes; /* The total bytes since this sending began */
+ uint64_t bw_tot_time; /* The total time since sending began */
+ uint64_t new_tot_time; /* temp holding the new value */
+ uint64_t bw_bytes_at_last_rttc; /* What bw_bytes was at last rtt calc */
+ uint32_t cwnd_at_bw_set; /* Cwnd at last bw saved - lbw */
+ uint32_t vol_reduce; /* cnt of voluntary reductions */
+ uint16_t steady_step; /* The number required to be in steady state*/
+ uint16_t step_cnt; /* The current number */
+ uint8_t ret_from_eq; /* When all things are equal what do I return 0/1 - 1 no cc advance */
+ uint8_t use_dccc_ecn; /* Flag to enable DCCC ECN */
+ uint8_t tls_needs_set; /* Flag to indicate we need to set tls 0 or 1 means set at send 2 not */
+ uint8_t last_step_state; /* Last state if steady state stepdown is on */
+ uint8_t rtt_set_this_sack; /* Flag saying this sack had RTT calc on it */
+ uint8_t last_inst_ind; /* Last saved inst indication */
+};
+
+
+struct sctp_nets {
+ TAILQ_ENTRY(sctp_nets) sctp_next; /* next link */
+
+ /*
+ * Things on the top half may be able to be split into a common
+ * structure shared by all.
+ */
+ struct sctp_timer pmtu_timer;
+ struct sctp_timer hb_timer;
+
+ /*
+ * The following two in combination equate to a route entry for v6
+ * or v4.
+ */
+ struct sctp_net_route ro;
+
+ /* mtu discovered so far */
+ uint32_t mtu;
+ uint32_t ssthresh; /* not sure about this one for split */
+ uint32_t last_cwr_tsn;
+ uint32_t cwr_window_tsn;
+ uint32_t ecn_ce_pkt_cnt;
+ uint32_t lost_cnt;
+ /* smoothed average things for RTT and RTO itself */
+ int lastsa;
+ int lastsv;
+ uint64_t rtt; /* last measured rtt value in us */
+ unsigned int RTO;
+
+ /* This is used for SHUTDOWN/SHUTDOWN-ACK/SEND or INIT timers */
+ struct sctp_timer rxt_timer;
+
+ /* last time in seconds I sent to it */
+ struct timeval last_sent_time;
+ union cc_control_data {
+ struct htcp htcp_ca; /* JRS - struct used in HTCP algorithm */
+ struct rtcc_cc rtcc; /* rtcc module cc stuff */
+ } cc_mod;
+ int ref_count;
+
+ /* Congestion stats per destination */
+ /*
+ * flight size variables and such, sorry Vern, I could not avoid
+ * this if I wanted performance :>
+ */
+ uint32_t flight_size;
+ uint32_t cwnd; /* actual cwnd */
+ uint32_t prev_cwnd; /* cwnd before any processing */
+ uint32_t ecn_prev_cwnd; /* ECN prev cwnd at first ecn_echo seen in new window */
+ uint32_t partial_bytes_acked; /* in CA tracks when to incr a MTU */
+ /* tracking variables to avoid the aloc/free in sack processing */
+ unsigned int net_ack;
+ unsigned int net_ack2;
+
+ /*
+ * JRS - 5/8/07 - Variable to track last time
+ * a destination was active for CMT PF
+ */
+ uint32_t last_active;
+
+ /*
+ * CMT variables (iyengar@cis.udel.edu)
+ */
+ uint32_t this_sack_highest_newack; /* tracks highest TSN newly
+ * acked for a given dest in
+ * the current SACK. Used in
+ * SFR and HTNA algos */
+ uint32_t pseudo_cumack; /* CMT CUC algorithm. Maintains next expected
+ * pseudo-cumack for this destination */
+ uint32_t rtx_pseudo_cumack; /* CMT CUC algorithm. Maintains next
+ * expected pseudo-cumack for this
+ * destination */
+
+ /* CMT fast recovery variables */
+ uint32_t fast_recovery_tsn;
+ uint32_t heartbeat_random1;
+ uint32_t heartbeat_random2;
+#ifdef INET6
+ uint32_t flowlabel;
+#endif
+ uint8_t dscp;
+
+ struct timeval start_time; /* time when this net was created */
+ uint32_t marked_retrans; /* number or DATA chunks marked for
+ timer based retransmissions */
+ uint32_t marked_fastretrans;
+ uint32_t heart_beat_delay; /* Heart Beat delay in ms */
+
+ /* if this guy is ok or not ... status */
+ uint16_t dest_state;
+ /* number of timeouts to consider the destination unreachable */
+ uint16_t failure_threshold;
+ /* number of timeouts to consider the destination potentially failed */
+ uint16_t pf_threshold;
+ /* error stats on the destination */
+ uint16_t error_count;
+ /* UDP port number in case of UDP tunneling */
+ uint16_t port;
+
+ uint8_t fast_retran_loss_recovery;
+ uint8_t will_exit_fast_recovery;
+ /* Flags that probably can be combined into dest_state */
+ uint8_t fast_retran_ip; /* fast retransmit in progress */
+ uint8_t hb_responded;
+ uint8_t saw_newack; /* CMT's SFR algorithm flag */
+ uint8_t src_addr_selected; /* if we split we move */
+ uint8_t indx_of_eligible_next_to_use;
+ uint8_t addr_is_local; /* its a local address (if known) could move
+ * in split */
+
+ /*
+ * CMT variables (iyengar@cis.udel.edu)
+ */
+ uint8_t find_pseudo_cumack; /* CMT CUC algorithm. Flag used to
+ * find a new pseudocumack. This flag
+ * is set after a new pseudo-cumack
+ * has been received and indicates
+ * that the sender should find the
+ * next pseudo-cumack expected for
+ * this destination */
+ uint8_t find_rtx_pseudo_cumack; /* CMT CUCv2 algorithm. Flag used to
+ * find a new rtx-pseudocumack. This
+ * flag is set after a new
+ * rtx-pseudo-cumack has been received
+ * and indicates that the sender
+ * should find the next
+ * rtx-pseudo-cumack expected for this
+ * destination */
+ uint8_t new_pseudo_cumack; /* CMT CUC algorithm. Flag used to
+ * indicate if a new pseudo-cumack or
+ * rtx-pseudo-cumack has been received */
+ uint8_t window_probe; /* Doing a window probe? */
+ uint8_t RTO_measured; /* Have we done the first measure */
+ uint8_t last_hs_used; /* index into the last HS table entry we used */
+ uint8_t lan_type;
+ uint8_t rto_needed;
+#if defined(__FreeBSD__)
+ uint32_t flowid;
+ uint8_t flowtype;
+#endif
+};
+
+
+struct sctp_data_chunkrec {
+ uint32_t tsn; /* the TSN of this transmit */
+ uint32_t mid; /* the message identifier of this transmit */
+ uint16_t sid; /* the stream number of this guy */
+ uint32_t ppid;
+ uint32_t context; /* from send */
+ uint32_t cwnd_at_send;
+ /*
+ * part of the Highest sacked algorithm to be able to stroke counts
+ * on ones that are FR'd.
+ */
+ uint32_t fast_retran_tsn; /* sending_seq at the time of FR */
+ struct timeval timetodrop; /* time we drop it from queue */
+ uint32_t fsn; /* Fragment Sequence Number */
+ uint8_t doing_fast_retransmit;
+ uint8_t rcv_flags; /* flags pulled from data chunk on inbound for
+ * outbound holds sending flags for PR-SCTP.
+ */
+ uint8_t state_flags;
+ uint8_t chunk_was_revoked;
+ uint8_t fwd_tsn_cnt;
+};
+
+TAILQ_HEAD(sctpchunk_listhead, sctp_tmit_chunk);
+
+/* The lower byte is used to enumerate PR_SCTP policies */
+#define CHUNK_FLAGS_PR_SCTP_TTL SCTP_PR_SCTP_TTL
+#define CHUNK_FLAGS_PR_SCTP_BUF SCTP_PR_SCTP_BUF
+#define CHUNK_FLAGS_PR_SCTP_RTX SCTP_PR_SCTP_RTX
+
+/* The upper byte is used as a bit mask */
+#define CHUNK_FLAGS_FRAGMENT_OK 0x0100
+
+struct chk_id {
+ uint8_t id;
+ uint8_t can_take_data;
+};
+
+
+struct sctp_tmit_chunk {
+ union {
+ struct sctp_data_chunkrec data;
+ struct chk_id chunk_id;
+ } rec;
+ struct sctp_association *asoc; /* bp to asoc this belongs to */
+ struct timeval sent_rcv_time; /* filled in if RTT being calculated */
+ struct mbuf *data; /* pointer to mbuf chain of data */
+ struct mbuf *last_mbuf; /* pointer to last mbuf in chain */
+ struct sctp_nets *whoTo;
+ TAILQ_ENTRY(sctp_tmit_chunk) sctp_next; /* next link */
+ int32_t sent; /* the send status */
+ uint16_t snd_count; /* number of times I sent */
+ uint16_t flags; /* flags, such as FRAGMENT_OK */
+ uint16_t send_size;
+ uint16_t book_size;
+ uint16_t mbcnt;
+ uint16_t auth_keyid;
+ uint8_t holds_key_ref; /* flag if auth keyid refcount is held */
+ uint8_t pad_inplace;
+ uint8_t do_rtt;
+ uint8_t book_size_scale;
+ uint8_t no_fr_allowed;
+ uint8_t copy_by_ref;
+ uint8_t window_probe;
+};
+
+struct sctp_queued_to_read { /* sinfo structure Pluse more */
+ uint16_t sinfo_stream; /* off the wire */
+ uint16_t sinfo_flags; /* SCTP_UNORDERED from wire use SCTP_EOF for
+ * EOR */
+ uint32_t sinfo_ppid; /* off the wire */
+ uint32_t sinfo_context; /* pick this up from assoc def context? */
+ uint32_t sinfo_timetolive; /* not used by kernel */
+ uint32_t sinfo_tsn; /* Use this in reassembly as first TSN */
+ uint32_t sinfo_cumtsn; /* Use this in reassembly as last TSN */
+ sctp_assoc_t sinfo_assoc_id; /* our assoc id */
+ /* Non sinfo stuff */
+ uint32_t mid; /* Fragment Index */
+ uint32_t length; /* length of data */
+ uint32_t held_length; /* length held in sb */
+ uint32_t top_fsn; /* Highest FSN in queue */
+ uint32_t fsn_included; /* Highest FSN in *data portion */
+ struct sctp_nets *whoFrom; /* where it came from */
+ struct mbuf *data; /* front of the mbuf chain of data with
+ * PKT_HDR */
+ struct mbuf *tail_mbuf; /* used for multi-part data */
+ struct mbuf *aux_data; /* used to hold/cache control if o/s does not take it from us */
+ struct sctp_tcb *stcb; /* assoc, used for window update */
+ TAILQ_ENTRY(sctp_queued_to_read) next;
+ TAILQ_ENTRY(sctp_queued_to_read) next_instrm;
+ struct sctpchunk_listhead reasm;
+ uint16_t port_from;
+ uint16_t spec_flags; /* Flags to hold the notification field */
+ uint8_t do_not_ref_stcb;
+ uint8_t end_added;
+ uint8_t pdapi_aborted;
+ uint8_t pdapi_started;
+ uint8_t some_taken;
+ uint8_t last_frag_seen;
+ uint8_t first_frag_seen;
+ uint8_t on_read_q;
+ uint8_t on_strm_q;
+};
+
+#define SCTP_ON_ORDERED 1
+#define SCTP_ON_UNORDERED 2
+
+/* This data structure will be on the outbound
+ * stream queues. Data will be pulled off from
+ * the front of the mbuf data and chunk-ified
+ * by the output routines. We will custom
+ * fit every chunk we pull to the send/sent
+ * queue to make up the next full packet
+ * if we can. An entry cannot be removed
+ * from the stream_out queue until
+ * the msg_is_complete flag is set. This
+ * means at times data/tail_mbuf MIGHT
+ * be NULL.. If that occurs it happens
+ * for one of two reasons. Either the user
+ * is blocked on a send() call and has not
+ * awoken to copy more data down... OR
+ * the user is in the explict MSG_EOR mode
+ * and wrote some data, but has not completed
+ * sending.
+ */
+struct sctp_stream_queue_pending {
+ struct mbuf *data;
+ struct mbuf *tail_mbuf;
+ struct timeval ts;
+ struct sctp_nets *net;
+ TAILQ_ENTRY (sctp_stream_queue_pending) next;
+ TAILQ_ENTRY (sctp_stream_queue_pending) ss_next;
+ uint32_t fsn;
+ uint32_t length;
+ uint32_t timetolive;
+ uint32_t ppid;
+ uint32_t context;
+ uint16_t sinfo_flags;
+ uint16_t sid;
+ uint16_t act_flags;
+ uint16_t auth_keyid;
+ uint8_t holds_key_ref;
+ uint8_t msg_is_complete;
+ uint8_t some_taken;
+ uint8_t sender_all_done;
+ uint8_t put_last_out;
+ uint8_t discard_rest;
+};
+
+/*
+ * this struct contains info that is used to track inbound stream data and
+ * help with ordering.
+ */
+TAILQ_HEAD(sctpwheelunrel_listhead, sctp_stream_in);
+struct sctp_stream_in {
+ struct sctp_readhead inqueue;
+ struct sctp_readhead uno_inqueue;
+ uint32_t last_mid_delivered; /* used for re-order */
+ uint16_t sid;
+ uint8_t delivery_started;
+ uint8_t pd_api_started;
+};
+
+TAILQ_HEAD(sctpwheel_listhead, sctp_stream_out);
+TAILQ_HEAD(sctplist_listhead, sctp_stream_queue_pending);
+
+
+/* Round-robin schedulers */
+struct ss_rr {
+ /* next link in wheel */
+ TAILQ_ENTRY(sctp_stream_out) next_spoke;
+};
+
+/* Priority scheduler */
+struct ss_prio {
+ /* next link in wheel */
+ TAILQ_ENTRY(sctp_stream_out) next_spoke;
+ /* priority id */
+ uint16_t priority;
+};
+
+/* Fair Bandwidth scheduler */
+struct ss_fb {
+ /* next link in wheel */
+ TAILQ_ENTRY(sctp_stream_out) next_spoke;
+ /* stores message size */
+ int32_t rounds;
+};
+
+/*
+ * This union holds all data necessary for
+ * different stream schedulers.
+ */
+struct scheduling_data {
+ struct sctp_stream_out *locked_on_sending;
+ /* circular looking for output selection */
+ struct sctp_stream_out *last_out_stream;
+ union {
+ struct sctpwheel_listhead wheel;
+ struct sctplist_listhead list;
+ } out;
+};
+
+/*
+ * This union holds all parameters per stream
+ * necessary for different stream schedulers.
+ */
+union scheduling_parameters {
+ struct ss_rr rr;
+ struct ss_prio prio;
+ struct ss_fb fb;
+};
+
+/* States for outgoing streams */
+#define SCTP_STREAM_CLOSED 0x00
+#define SCTP_STREAM_OPENING 0x01
+#define SCTP_STREAM_OPEN 0x02
+#define SCTP_STREAM_RESET_PENDING 0x03
+#define SCTP_STREAM_RESET_IN_FLIGHT 0x04
+
+#define SCTP_MAX_STREAMS_AT_ONCE_RESET 200
+
+/* This struct is used to track the traffic on outbound streams */
+struct sctp_stream_out {
+ struct sctp_streamhead outqueue;
+ union scheduling_parameters ss_params;
+ uint32_t chunks_on_queues; /* send queue and sent queue */
+#if defined(SCTP_DETAILED_STR_STATS)
+ uint32_t abandoned_unsent[SCTP_PR_SCTP_MAX + 1];
+ uint32_t abandoned_sent[SCTP_PR_SCTP_MAX + 1];
+#else
+ /* Only the aggregation */
+ uint32_t abandoned_unsent[1];
+ uint32_t abandoned_sent[1];
+#endif
+ /* For associations using DATA chunks, the lower 16-bit of
+ * next_mid_ordered are used as the next SSN.
+ */
+ uint32_t next_mid_ordered;
+ uint32_t next_mid_unordered;
+ uint16_t sid;
+ uint8_t last_msg_incomplete;
+ uint8_t state;
+};
+
+/* used to keep track of the addresses yet to try to add/delete */
+TAILQ_HEAD(sctp_asconf_addrhead, sctp_asconf_addr);
+struct sctp_asconf_addr {
+ TAILQ_ENTRY(sctp_asconf_addr) next;
+ struct sctp_asconf_addr_param ap;
+ struct sctp_ifa *ifa; /* save the ifa for add/del ip */
+ uint8_t sent; /* has this been sent yet? */
+ uint8_t special_del; /* not to be used in lookup */
+};
+
+struct sctp_scoping {
+ uint8_t ipv4_addr_legal;
+ uint8_t ipv6_addr_legal;
+#if defined(__Userspace__)
+ uint8_t conn_addr_legal;
+#endif
+ uint8_t loopback_scope;
+ uint8_t ipv4_local_scope;
+ uint8_t local_scope;
+ uint8_t site_scope;
+};
+
+#define SCTP_TSN_LOG_SIZE 40
+
+struct sctp_tsn_log {
+ void *stcb;
+ uint32_t tsn;
+ uint32_t seq;
+ uint16_t strm;
+ uint16_t sz;
+ uint16_t flgs;
+ uint16_t in_pos;
+ uint16_t in_out;
+ uint16_t resv;
+};
+
+#define SCTP_FS_SPEC_LOG_SIZE 200
+struct sctp_fs_spec_log {
+ uint32_t sent;
+ uint32_t total_flight;
+ uint32_t tsn;
+ uint16_t book;
+ uint8_t incr;
+ uint8_t decr;
+};
+
+/* This struct is here to cut out the compatiabilty
+ * pad that bulks up both the inp and stcb. The non
+ * pad portion MUST stay in complete sync with
+ * sctp_sndrcvinfo... i.e. if sinfo_xxxx is added
+ * this must be done here too.
+ */
+struct sctp_nonpad_sndrcvinfo {
+ uint16_t sinfo_stream;
+ uint16_t sinfo_ssn;
+ uint16_t sinfo_flags;
+ uint32_t sinfo_ppid;
+ uint32_t sinfo_context;
+ uint32_t sinfo_timetolive;
+ uint32_t sinfo_tsn;
+ uint32_t sinfo_cumtsn;
+ sctp_assoc_t sinfo_assoc_id;
+ uint16_t sinfo_keynumber;
+ uint16_t sinfo_keynumber_valid;
+};
+
+/*
+ * JRS - Structure to hold function pointers to the functions responsible
+ * for congestion control.
+ */
+
+struct sctp_cc_functions {
+ void (*sctp_set_initial_cc_param)(struct sctp_tcb *stcb, struct sctp_nets *net);
+ void (*sctp_cwnd_update_after_sack)(struct sctp_tcb *stcb,
+ struct sctp_association *asoc,
+ int accum_moved ,int reneged_all, int will_exit);
+ void (*sctp_cwnd_update_exit_pf)(struct sctp_tcb *stcb, struct sctp_nets *net);
+ void (*sctp_cwnd_update_after_fr)(struct sctp_tcb *stcb,
+ struct sctp_association *asoc);
+ void (*sctp_cwnd_update_after_timeout)(struct sctp_tcb *stcb,
+ struct sctp_nets *net);
+ void (*sctp_cwnd_update_after_ecn_echo)(struct sctp_tcb *stcb,
+ struct sctp_nets *net, int in_window, int num_pkt_lost);
+ void (*sctp_cwnd_update_after_packet_dropped)(struct sctp_tcb *stcb,
+ struct sctp_nets *net, struct sctp_pktdrop_chunk *cp,
+ uint32_t *bottle_bw, uint32_t *on_queue);
+ void (*sctp_cwnd_update_after_output)(struct sctp_tcb *stcb,
+ struct sctp_nets *net, int burst_limit);
+ void (*sctp_cwnd_update_packet_transmitted)(struct sctp_tcb *stcb,
+ struct sctp_nets *net);
+ void (*sctp_cwnd_update_tsn_acknowledged)(struct sctp_nets *net,
+ struct sctp_tmit_chunk *);
+ void (*sctp_cwnd_new_transmission_begins)(struct sctp_tcb *stcb,
+ struct sctp_nets *net);
+ void (*sctp_cwnd_prepare_net_for_sack)(struct sctp_tcb *stcb,
+ struct sctp_nets *net);
+ int (*sctp_cwnd_socket_option)(struct sctp_tcb *stcb, int set, struct sctp_cc_option *);
+ void (*sctp_rtt_calculated)(struct sctp_tcb *, struct sctp_nets *, struct timeval *);
+};
+
+/*
+ * RS - Structure to hold function pointers to the functions responsible
+ * for stream scheduling.
+ */
+struct sctp_ss_functions {
+ void (*sctp_ss_init)(struct sctp_tcb *stcb, struct sctp_association *asoc,
+ int holds_lock);
+ void (*sctp_ss_clear)(struct sctp_tcb *stcb, struct sctp_association *asoc,
+ int clear_values, int holds_lock);
+ void (*sctp_ss_init_stream)(struct sctp_tcb *stcb, struct sctp_stream_out *strq, struct sctp_stream_out *with_strq);
+ void (*sctp_ss_add_to_stream)(struct sctp_tcb *stcb, struct sctp_association *asoc,
+ struct sctp_stream_out *strq, struct sctp_stream_queue_pending *sp, int holds_lock);
+ int (*sctp_ss_is_empty)(struct sctp_tcb *stcb, struct sctp_association *asoc);
+ void (*sctp_ss_remove_from_stream)(struct sctp_tcb *stcb, struct sctp_association *asoc,
+ struct sctp_stream_out *strq, struct sctp_stream_queue_pending *sp, int holds_lock);
+ struct sctp_stream_out* (*sctp_ss_select_stream)(struct sctp_tcb *stcb,
+ struct sctp_nets *net, struct sctp_association *asoc);
+ void (*sctp_ss_scheduled)(struct sctp_tcb *stcb, struct sctp_nets *net,
+ struct sctp_association *asoc, struct sctp_stream_out *strq, int moved_how_much);
+ void (*sctp_ss_packet_done)(struct sctp_tcb *stcb, struct sctp_nets *net,
+ struct sctp_association *asoc);
+ int (*sctp_ss_get_value)(struct sctp_tcb *stcb, struct sctp_association *asoc,
+ struct sctp_stream_out *strq, uint16_t *value);
+ int (*sctp_ss_set_value)(struct sctp_tcb *stcb, struct sctp_association *asoc,
+ struct sctp_stream_out *strq, uint16_t value);
+ int (*sctp_ss_is_user_msgs_incomplete)(struct sctp_tcb *stcb, struct sctp_association *asoc);
+};
+
+/* used to save ASCONF chunks for retransmission */
+TAILQ_HEAD(sctp_asconf_head, sctp_asconf);
+struct sctp_asconf {
+ TAILQ_ENTRY(sctp_asconf) next;
+ uint32_t serial_number;
+ uint16_t snd_count;
+ struct mbuf *data;
+ uint16_t len;
+};
+
+/* used to save ASCONF-ACK chunks for retransmission */
+TAILQ_HEAD(sctp_asconf_ackhead, sctp_asconf_ack);
+struct sctp_asconf_ack {
+ TAILQ_ENTRY(sctp_asconf_ack) next;
+ uint32_t serial_number;
+ struct sctp_nets *last_sent_to;
+ struct mbuf *data;
+ uint16_t len;
+};
+
+/*
+ * Here we have information about each individual association that we track.
+ * We probably in production would be more dynamic. But for ease of
+ * implementation we will have a fixed array that we hunt for in a linear
+ * fashion.
+ */
+struct sctp_association {
+ /* association state */
+ int state;
+
+ /* queue of pending addrs to add/delete */
+ struct sctp_asconf_addrhead asconf_queue;
+
+ struct timeval time_entered; /* time we entered state */
+ struct timeval time_last_rcvd;
+ struct timeval time_last_sent;
+ struct timeval time_last_sat_advance;
+ struct sctp_nonpad_sndrcvinfo def_send;
+
+ /* timers and such */
+ struct sctp_timer dack_timer; /* Delayed ack timer */
+ struct sctp_timer asconf_timer; /* asconf */
+ struct sctp_timer strreset_timer; /* stream reset */
+ struct sctp_timer shut_guard_timer; /* shutdown guard */
+ struct sctp_timer autoclose_timer; /* automatic close timer */
+ struct sctp_timer delayed_event_timer; /* timer for delayed events */
+ struct sctp_timer delete_prim_timer; /* deleting primary dst */
+
+ /* list of restricted local addresses */
+ struct sctpladdr sctp_restricted_addrs;
+
+ /* last local address pending deletion (waiting for an address add) */
+ struct sctp_ifa *asconf_addr_del_pending;
+ /* Deleted primary destination (used to stop timer) */
+ struct sctp_nets *deleted_primary;
+
+ struct sctpnetlisthead nets; /* remote address list */
+
+ /* Free chunk list */
+ struct sctpchunk_listhead free_chunks;
+
+ /* Control chunk queue */
+ struct sctpchunk_listhead control_send_queue;
+
+ /* ASCONF chunk queue */
+ struct sctpchunk_listhead asconf_send_queue;
+
+ /*
+ * Once a TSN hits the wire it is moved to the sent_queue. We
+ * maintain two counts here (don't know if any but retran_cnt is
+ * needed). The idea is that the sent_queue_retran_cnt reflects how
+ * many chunks have been marked for retranmission by either T3-rxt
+ * or FR.
+ */
+ struct sctpchunk_listhead sent_queue;
+ struct sctpchunk_listhead send_queue;
+
+ /* Scheduling queues */
+ struct scheduling_data ss_data;
+
+ /* If an iterator is looking at me, this is it */
+ struct sctp_iterator *stcb_starting_point_for_iterator;
+
+ /* ASCONF save the last ASCONF-ACK so we can resend it if necessary */
+ struct sctp_asconf_ackhead asconf_ack_sent;
+
+ /*
+ * pointer to last stream reset queued to control queue by us with
+ * requests.
+ */
+ struct sctp_tmit_chunk *str_reset;
+ /*
+ * if Source Address Selection happening, this will rotate through
+ * the link list.
+ */
+ struct sctp_laddr *last_used_address;
+
+ /* stream arrays */
+ struct sctp_stream_in *strmin;
+ struct sctp_stream_out *strmout;
+ uint8_t *mapping_array;
+ /* primary destination to use */
+ struct sctp_nets *primary_destination;
+ struct sctp_nets *alternate; /* If primary is down or PF */
+ /* For CMT */
+ struct sctp_nets *last_net_cmt_send_started;
+ /* last place I got a data chunk from */
+ struct sctp_nets *last_data_chunk_from;
+ /* last place I got a control from */
+ struct sctp_nets *last_control_chunk_from;
+
+
+ /*
+ * wait to the point the cum-ack passes req->send_reset_at_tsn for
+ * any req on the list.
+ */
+ struct sctp_resethead resetHead;
+
+ /* queue of chunks waiting to be sent into the local stack */
+ struct sctp_readhead pending_reply_queue;
+
+ /* JRS - the congestion control functions are in this struct */
+ struct sctp_cc_functions cc_functions;
+ /* JRS - value to store the currently loaded congestion control module */
+ uint32_t congestion_control_module;
+ /* RS - the stream scheduling functions are in this struct */
+ struct sctp_ss_functions ss_functions;
+ /* RS - value to store the currently loaded stream scheduling module */
+ uint32_t stream_scheduling_module;
+
+ uint32_t vrf_id;
+ uint32_t cookie_preserve_req;
+ /* ASCONF next seq I am sending out, inits at init-tsn */
+ uint32_t asconf_seq_out;
+ uint32_t asconf_seq_out_acked;
+ /* ASCONF last received ASCONF from peer, starts at peer's TSN-1 */
+ uint32_t asconf_seq_in;
+
+ /* next seq I am sending in str reset messages */
+ uint32_t str_reset_seq_out;
+ /* next seq I am expecting in str reset messages */
+ uint32_t str_reset_seq_in;
+
+ /* various verification tag information */
+ uint32_t my_vtag; /* The tag to be used. if assoc is re-initited
+ * by remote end, and I have unlocked this
+ * will be regenerated to a new random value. */
+ uint32_t peer_vtag; /* The peers last tag */
+
+ uint32_t my_vtag_nonce;
+ uint32_t peer_vtag_nonce;
+
+ uint32_t assoc_id;
+
+ /* This is the SCTP fragmentation threshold */
+ uint32_t smallest_mtu;
+
+ /*
+ * Special hook for Fast retransmit, allows us to track the highest
+ * TSN that is NEW in this SACK if gap ack blocks are present.
+ */
+ uint32_t this_sack_highest_gap;
+
+ /*
+ * The highest consecutive TSN that has been acked by peer on my
+ * sends
+ */
+ uint32_t last_acked_seq;
+
+ /* The next TSN that I will use in sending. */
+ uint32_t sending_seq;
+
+ /* Original seq number I used ??questionable to keep?? */
+ uint32_t init_seq_number;
+
+
+ /* The Advanced Peer Ack Point, as required by the PR-SCTP */
+ /* (A1 in Section 4.2) */
+ uint32_t advanced_peer_ack_point;
+
+ /*
+ * The highest consequetive TSN at the bottom of the mapping array
+ * (for his sends).
+ */
+ uint32_t cumulative_tsn;
+ /*
+ * Used to track the mapping array and its offset bits. This MAY be
+ * lower then cumulative_tsn.
+ */
+ uint32_t mapping_array_base_tsn;
+ /*
+ * used to track highest TSN we have received and is listed in the
+ * mapping array.
+ */
+ uint32_t highest_tsn_inside_map;
+
+ /* EY - new NR variables used for nr_sack based on mapping_array*/
+ uint8_t *nr_mapping_array;
+ uint32_t highest_tsn_inside_nr_map;
+
+ uint32_t fast_recovery_tsn;
+ uint32_t sat_t3_recovery_tsn;
+ uint32_t tsn_last_delivered;
+ /*
+ * For the pd-api we should re-write this a bit more efficient. We
+ * could have multiple sctp_queued_to_read's that we are building at
+ * once. Now we only do this when we get ready to deliver to the
+ * socket buffer. Note that we depend on the fact that the struct is
+ * "stuck" on the read queue until we finish all the pd-api.
+ */
+ struct sctp_queued_to_read *control_pdapi;
+
+ uint32_t tsn_of_pdapi_last_delivered;
+ uint32_t pdapi_ppid;
+ uint32_t context;
+ uint32_t last_reset_action[SCTP_MAX_RESET_PARAMS];
+ uint32_t last_sending_seq[SCTP_MAX_RESET_PARAMS];
+ uint32_t last_base_tsnsent[SCTP_MAX_RESET_PARAMS];
+#ifdef SCTP_ASOCLOG_OF_TSNS
+ /*
+ * special log - This adds considerable size
+ * to the asoc, but provides a log that you
+ * can use to detect problems via kgdb.
+ */
+ struct sctp_tsn_log in_tsnlog[SCTP_TSN_LOG_SIZE];
+ struct sctp_tsn_log out_tsnlog[SCTP_TSN_LOG_SIZE];
+ uint32_t cumack_log[SCTP_TSN_LOG_SIZE];
+ uint32_t cumack_logsnt[SCTP_TSN_LOG_SIZE];
+ uint16_t tsn_in_at;
+ uint16_t tsn_out_at;
+ uint16_t tsn_in_wrapped;
+ uint16_t tsn_out_wrapped;
+ uint16_t cumack_log_at;
+ uint16_t cumack_log_atsnt;
+#endif /* SCTP_ASOCLOG_OF_TSNS */
+#ifdef SCTP_FS_SPEC_LOG
+ struct sctp_fs_spec_log fslog[SCTP_FS_SPEC_LOG_SIZE];
+ uint16_t fs_index;
+#endif
+
+ /*
+ * window state information and smallest MTU that I use to bound
+ * segmentation
+ */
+ uint32_t peers_rwnd;
+ uint32_t my_rwnd;
+ uint32_t my_last_reported_rwnd;
+ uint32_t sctp_frag_point;
+
+ uint32_t total_output_queue_size;
+
+ uint32_t sb_cc; /* shadow of sb_cc */
+ uint32_t sb_send_resv; /* amount reserved on a send */
+ uint32_t my_rwnd_control_len; /* shadow of sb_mbcnt used for rwnd control */
+#ifdef INET6
+ uint32_t default_flowlabel;
+#endif
+ uint32_t pr_sctp_cnt;
+ int ctrl_queue_cnt; /* could be removed REM - NO IT CAN'T!! RRS */
+ /*
+ * All outbound datagrams queue into this list from the individual
+ * stream queue. Here they get assigned a TSN and then await
+ * sending. The stream seq comes when it is first put in the
+ * individual str queue
+ */
+ unsigned int stream_queue_cnt;
+ unsigned int send_queue_cnt;
+ unsigned int sent_queue_cnt;
+ unsigned int sent_queue_cnt_removeable;
+ /*
+ * Number on sent queue that are marked for retran until this value
+ * is 0 we only send one packet of retran'ed data.
+ */
+ unsigned int sent_queue_retran_cnt;
+
+ unsigned int size_on_reasm_queue;
+ unsigned int cnt_on_reasm_queue;
+ unsigned int fwd_tsn_cnt;
+ /* amount of data (bytes) currently in flight (on all destinations) */
+ unsigned int total_flight;
+ /* Total book size in flight */
+ unsigned int total_flight_count; /* count of chunks used with
+ * book total */
+ /* count of destinaton nets and list of destination nets */
+ unsigned int numnets;
+
+ /* Total error count on this association */
+ unsigned int overall_error_count;
+
+ unsigned int cnt_msg_on_sb;
+
+ /* All stream count of chunks for delivery */
+ unsigned int size_on_all_streams;
+ unsigned int cnt_on_all_streams;
+
+ /* Heart Beat delay in ms */
+ uint32_t heart_beat_delay;
+
+ /* autoclose */
+ unsigned int sctp_autoclose_ticks;
+
+ /* how many preopen streams we have */
+ unsigned int pre_open_streams;
+
+ /* How many streams I support coming into me */
+ unsigned int max_inbound_streams;
+
+ /* the cookie life I award for any cookie, in seconds */
+ unsigned int cookie_life;
+ /* time to delay acks for */
+ unsigned int delayed_ack;
+ unsigned int old_delayed_ack;
+ unsigned int sack_freq;
+ unsigned int data_pkts_seen;
+
+ unsigned int numduptsns;
+ int dup_tsns[SCTP_MAX_DUP_TSNS];
+ unsigned int initial_init_rto_max; /* initial RTO for INIT's */
+ unsigned int initial_rto; /* initial send RTO */
+ unsigned int minrto; /* per assoc RTO-MIN */
+ unsigned int maxrto; /* per assoc RTO-MAX */
+
+ /* authentication fields */
+ sctp_auth_chklist_t *local_auth_chunks;
+ sctp_auth_chklist_t *peer_auth_chunks;
+ sctp_hmaclist_t *local_hmacs; /* local HMACs supported */
+ sctp_hmaclist_t *peer_hmacs; /* peer HMACs supported */
+ struct sctp_keyhead shared_keys; /* assoc's shared keys */
+ sctp_authinfo_t authinfo; /* randoms, cached keys */
+ /*
+ * refcnt to block freeing when a sender or receiver is off coping
+ * user data in.
+ */
+ uint32_t refcnt;
+ uint32_t chunks_on_out_queue; /* total chunks floating around,
+ * locked by send socket buffer */
+ uint32_t peers_adaptation;
+ uint16_t peer_hmac_id; /* peer HMAC id to send */
+
+ /*
+ * Being that we have no bag to collect stale cookies, and that we
+ * really would not want to anyway.. we will count them in this
+ * counter. We of course feed them to the pigeons right away (I have
+ * always thought of pigeons as flying rats).
+ */
+ uint16_t stale_cookie_count;
+
+ /*
+ * For the partial delivery API, if up, invoked this is what last
+ * TSN I delivered
+ */
+ uint16_t str_of_pdapi;
+ uint16_t ssn_of_pdapi;
+
+ /* counts of actual built streams. Allocation may be more however */
+ /* could re-arrange to optimize space here. */
+ uint16_t streamincnt;
+ uint16_t streamoutcnt;
+ uint16_t strm_realoutsize;
+ uint16_t strm_pending_add_size;
+ /* my maximum number of retrans of INIT and SEND */
+ /* copied from SCTP but should be individually setable */
+ uint16_t max_init_times;
+ uint16_t max_send_times;
+
+ uint16_t def_net_failure;
+
+ uint16_t def_net_pf_threshold;
+
+ /*
+ * lock flag: 0 is ok to send, 1+ (duals as a retran count) is
+ * awaiting ACK
+ */
+ uint16_t mapping_array_size;
+
+ uint16_t last_strm_seq_delivered;
+ uint16_t last_strm_no_delivered;
+
+ uint16_t last_revoke_count;
+ int16_t num_send_timers_up;
+
+ uint16_t stream_locked_on;
+ uint16_t ecn_echo_cnt_onq;
+
+ uint16_t free_chunk_cnt;
+ uint8_t stream_locked;
+ uint8_t authenticated; /* packet authenticated ok */
+ /*
+ * This flag indicates that a SACK need to be sent.
+ * Initially this is 1 to send the first sACK immediately.
+ */
+ uint8_t send_sack;
+
+ /* max burst of new packets into the network */
+ uint32_t max_burst;
+ /* max burst of fast retransmit packets */
+ uint32_t fr_max_burst;
+
+ uint8_t sat_network; /* RTT is in range of sat net or greater */
+ uint8_t sat_network_lockout; /* lockout code */
+ uint8_t burst_limit_applied; /* Burst limit in effect at last send? */
+ /* flag goes on when we are doing a partial delivery api */
+ uint8_t hb_random_values[4];
+ uint8_t fragmented_delivery_inprogress;
+ uint8_t fragment_flags;
+ uint8_t last_flags_delivered;
+ uint8_t hb_ect_randombit;
+ uint8_t hb_random_idx;
+ uint8_t default_dscp;
+ uint8_t asconf_del_pending; /* asconf delete last addr pending */
+ uint8_t trigger_reset;
+ /*
+ * This value, plus all other ack'd but above cum-ack is added
+ * together to cross check against the bit that we have yet to
+ * define (probably in the SACK). When the cum-ack is updated, this
+ * sum is updated as well.
+ */
+
+ /* Flags whether an extension is supported or not */
+ uint8_t ecn_supported;
+ uint8_t prsctp_supported;
+ uint8_t auth_supported;
+ uint8_t asconf_supported;
+ uint8_t reconfig_supported;
+ uint8_t nrsack_supported;
+ uint8_t pktdrop_supported;
+ uint8_t idata_supported;
+
+ /* Did the peer make the stream config (add out) request */
+ uint8_t peer_req_out;
+
+ uint8_t local_strreset_support;
+ uint8_t peer_supports_nat;
+
+ struct sctp_scoping scope;
+ /* flags to handle send alternate net tracking */
+ uint8_t used_alt_asconfack;
+ uint8_t fast_retran_loss_recovery;
+ uint8_t sat_t3_loss_recovery;
+ uint8_t dropped_special_cnt;
+ uint8_t seen_a_sack_this_pkt;
+ uint8_t stream_reset_outstanding;
+ uint8_t stream_reset_out_is_outstanding;
+ uint8_t delayed_connection;
+ uint8_t ifp_had_enobuf;
+ uint8_t saw_sack_with_frags;
+ uint8_t saw_sack_with_nr_frags;
+ uint8_t in_asocid_hash;
+ uint8_t assoc_up_sent;
+ uint8_t adaptation_needed;
+ uint8_t adaptation_sent;
+ /* CMT variables */
+ uint8_t cmt_dac_pkts_rcvd;
+ uint8_t sctp_cmt_on_off;
+ uint8_t iam_blocking;
+ uint8_t cookie_how[8];
+ /* JRS 5/21/07 - CMT PF variable */
+ uint8_t sctp_cmt_pf;
+ uint8_t use_precise_time;
+ uint64_t sctp_features;
+ uint32_t max_cwnd;
+ uint16_t port; /* remote UDP encapsulation port */
+ /*
+ * The mapping array is used to track out of order sequences above
+ * last_acked_seq. 0 indicates packet missing 1 indicates packet
+ * rec'd. We slide it up every time we raise last_acked_seq and 0
+ * trailing locactions out. If I get a TSN above the array
+ * mappingArraySz, I discard the datagram and let retransmit happen.
+ */
+ uint32_t marked_retrans;
+ uint32_t timoinit;
+ uint32_t timodata;
+ uint32_t timosack;
+ uint32_t timoshutdown;
+ uint32_t timoheartbeat;
+ uint32_t timocookie;
+ uint32_t timoshutdownack;
+ struct timeval start_time;
+ struct timeval discontinuity_time;
+ uint64_t abandoned_unsent[SCTP_PR_SCTP_MAX + 1];
+ uint64_t abandoned_sent[SCTP_PR_SCTP_MAX + 1];
+};
+
+#endif