The Tor Browser / file revision

 /*-

  * 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 255190 2013-09-03 19:31:59Z 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 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 >= 800000

 	void *ro_lle;

 #endif

 #if __FreeBSD_version >= 900000

 	void *ro_ia;

 	int ro_flags;

 #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;

 #ifdef INVARIANTS

 	uint8_t flowidset;

 #endif

 #endif

 };

 struct sctp_data_chunkrec {

 	uint32_t TSN_seq;	/* the TSN of this transmit */

 	uint16_t stream_seq;	/* the stream sequence number of this transmit */

 	uint16_t stream_number;	/* the stream number of this guy */

 	uint32_t payloadtype;

 	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 */

 	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 {

 	uint16_t id;

 	uint16_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;

 };

 /*

  * The first part of this structure MUST be the entire sinfo structure. Maybe

  * I should have made it a sub structure... we can circle back later and do

  * that if we want.

  */

 struct sctp_queued_to_read {	/* sinfo structure Pluse more */

 	uint16_t sinfo_stream;	/* off the wire */

 	uint16_t sinfo_ssn;	/* 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 length;	/* length of data */

 	uint32_t held_length;	/* length held in sb */

 	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;

 	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  some_taken;

 };

 /* 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 length;

 	uint32_t timetolive;

 	uint32_t ppid;

 	uint32_t context;

 	uint16_t sinfo_flags;

 	uint16_t stream;

 	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;

 	uint16_t stream_no;

 	uint16_t last_sequence_delivered;	/* used for re-order */

 	uint8_t  delivery_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.

  */

 union scheduling_data {

 	struct sctpwheel_listhead out_wheel;

 	struct sctplist_listhead out_list;

 };

 /*

  * 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;

 };

 /* 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;

 	uint16_t stream_no;

 	uint16_t next_sequence_send;	/* next one I expect to send out */

 	uint8_t last_msg_incomplete;

 };

 /* 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;

 	uint16_t strm;

 	uint16_t seq;

 	uint16_t sz;

 	uint16_t flgs;

 	uint16_t in_pos;

 	uint16_t in_out;

 };

 #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_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);

 };

 /* 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;

 	/* re-assembly queue for fragmented chunks on the inbound path */

 	struct sctpchunk_listhead reasmqueue;

 	/* Scheduling queues */

 	union scheduling_data ss_data;

 	/* This pointer will be set to NULL

 	 * most of the time. But when we have

 	 * a fragmented message, where we could

 	 * not get out all of the message at

 	 * the last send then this will point

 	 * to the stream to go get data from.

 	 */

 	struct sctp_stream_out *locked_on_sending;

 	/* 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;

 	/* circular looking for output selection */

 	struct sctp_stream_out *last_out_stream;

 	/*

 	 * 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 efficent. 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 */

 	/*

 	 * 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.

 	 */

 	/* Flag to tell if ECN is allowed */

 	uint8_t ecn_allowed;

 	/* Did the peer make the stream config (add out) request */

 	uint8_t peer_req_out;

 	/* flag to indicate if peer can do asconf */

 	uint8_t peer_supports_asconf;

 	/* EY - flag to indicate if peer can do nr_sack*/

 	uint8_t peer_supports_nr_sack;

 	/* pr-sctp support flag */

 	uint8_t peer_supports_prsctp;

 	/* peer authentication support flag */

 	uint8_t peer_supports_auth;

 	/* stream resets are supported by the peer */

 	uint8_t peer_supports_strreset;

 	uint8_t local_strreset_support;

         uint8_t peer_supports_nat;

 	/*

 	 * packet drop's are supported by the peer, we don't really care

 	 * about this but we bookkeep it anyway.

 	 */

 	uint8_t peer_supports_pktdrop;

 	struct sctp_scoping scope;

 	/* flags to handle send alternate net tracking */

 	uint8_t used_alt_onsack;

 	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];

 	/* EY 05/05/08 - NR_SACK variable*/

 	uint8_t sctp_nr_sack_on_off;

 	/* JRS 5/21/07 - CMT PF variable */

 	uint8_t sctp_cmt_pf;

 	uint8_t use_precise_time;

 	uint64_t sctp_features;

 	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;

 };

 #endif