diff --git a/sys/netinet/sctputil.c b/sys/netinet/sctputil.c
index e963c5cb466e..fd11a7ece5b7 100644
--- a/sys/netinet/sctputil.c
+++ b/sys/netinet/sctputil.c
@@ -1,7701 +1,7701 @@
 /*-
  * SPDX-License-Identifier: BSD-3-Clause
  *
  * 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.
  */
 
 #include <netinet/sctp_os.h>
 #include <netinet/sctp_pcb.h>
 #include <netinet/sctputil.h>
 #include <netinet/sctp_var.h>
 #include <netinet/sctp_sysctl.h>
 #ifdef INET6
 #include <netinet6/sctp6_var.h>
 #endif
 #include <netinet/sctp_header.h>
 #include <netinet/sctp_output.h>
 #include <netinet/sctp_uio.h>
 #include <netinet/sctp_timer.h>
 #include <netinet/sctp_indata.h>
 #include <netinet/sctp_auth.h>
 #include <netinet/sctp_asconf.h>
 #include <netinet/sctp_bsd_addr.h>
 #include <netinet/sctp_kdtrace.h>
 #if defined(INET6) || defined(INET)
 #include <netinet/tcp_var.h>
 #endif
 #include <netinet/udp.h>
 #include <netinet/udp_var.h>
 #include <sys/proc.h>
 #ifdef INET6
 #include <netinet/icmp6.h>
 #endif
 
 #ifndef KTR_SCTP
 #define KTR_SCTP KTR_SUBSYS
 #endif
 
 extern const struct sctp_cc_functions sctp_cc_functions[];
 extern const struct sctp_ss_functions sctp_ss_functions[];
 
 void
 sctp_sblog(struct sockbuf *sb, struct sctp_tcb *stcb, int from, int incr)
 {
 #if defined(SCTP_LOCAL_TRACE_BUF)
 	struct sctp_cwnd_log sctp_clog;
 
 	sctp_clog.x.sb.stcb = stcb;
 	sctp_clog.x.sb.so_sbcc = SCTP_SBAVAIL(sb);
 	if (stcb)
 		sctp_clog.x.sb.stcb_sbcc = stcb->asoc.sb_cc;
 	else
 		sctp_clog.x.sb.stcb_sbcc = 0;
 	sctp_clog.x.sb.incr = incr;
 	SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
 	    SCTP_LOG_EVENT_SB,
 	    from,
 	    sctp_clog.x.misc.log1,
 	    sctp_clog.x.misc.log2,
 	    sctp_clog.x.misc.log3,
 	    sctp_clog.x.misc.log4);
 #endif
 }
 
 void
 sctp_log_closing(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int16_t loc)
 {
 #if defined(SCTP_LOCAL_TRACE_BUF)
 	struct sctp_cwnd_log sctp_clog;
 
 	sctp_clog.x.close.inp = (void *)inp;
 	sctp_clog.x.close.sctp_flags = inp->sctp_flags;
 	if (stcb) {
 		sctp_clog.x.close.stcb = (void *)stcb;
 		sctp_clog.x.close.state = (uint16_t)stcb->asoc.state;
 	} else {
 		sctp_clog.x.close.stcb = 0;
 		sctp_clog.x.close.state = 0;
 	}
 	sctp_clog.x.close.loc = loc;
 	SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
 	    SCTP_LOG_EVENT_CLOSE,
 	    0,
 	    sctp_clog.x.misc.log1,
 	    sctp_clog.x.misc.log2,
 	    sctp_clog.x.misc.log3,
 	    sctp_clog.x.misc.log4);
 #endif
 }
 
 void
 rto_logging(struct sctp_nets *net, int from)
 {
 #if defined(SCTP_LOCAL_TRACE_BUF)
 	struct sctp_cwnd_log sctp_clog;
 
 	memset(&sctp_clog, 0, sizeof(sctp_clog));
 	sctp_clog.x.rto.net = (void *)net;
 	sctp_clog.x.rto.rtt = net->rtt / 1000;
 	SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
 	    SCTP_LOG_EVENT_RTT,
 	    from,
 	    sctp_clog.x.misc.log1,
 	    sctp_clog.x.misc.log2,
 	    sctp_clog.x.misc.log3,
 	    sctp_clog.x.misc.log4);
 #endif
 }
 
 void
 sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t tsn, uint16_t sseq, uint16_t stream, int from)
 {
 #if defined(SCTP_LOCAL_TRACE_BUF)
 	struct sctp_cwnd_log sctp_clog;
 
 	sctp_clog.x.strlog.stcb = stcb;
 	sctp_clog.x.strlog.n_tsn = tsn;
 	sctp_clog.x.strlog.n_sseq = sseq;
 	sctp_clog.x.strlog.e_tsn = 0;
 	sctp_clog.x.strlog.e_sseq = 0;
 	sctp_clog.x.strlog.strm = stream;
 	SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
 	    SCTP_LOG_EVENT_STRM,
 	    from,
 	    sctp_clog.x.misc.log1,
 	    sctp_clog.x.misc.log2,
 	    sctp_clog.x.misc.log3,
 	    sctp_clog.x.misc.log4);
 #endif
 }
 
 void
 sctp_log_nagle_event(struct sctp_tcb *stcb, int action)
 {
 #if defined(SCTP_LOCAL_TRACE_BUF)
 	struct sctp_cwnd_log sctp_clog;
 
 	sctp_clog.x.nagle.stcb = (void *)stcb;
 	sctp_clog.x.nagle.total_flight = stcb->asoc.total_flight;
 	sctp_clog.x.nagle.total_in_queue = stcb->asoc.total_output_queue_size;
 	sctp_clog.x.nagle.count_in_queue = stcb->asoc.chunks_on_out_queue;
 	sctp_clog.x.nagle.count_in_flight = stcb->asoc.total_flight_count;
 	SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
 	    SCTP_LOG_EVENT_NAGLE,
 	    action,
 	    sctp_clog.x.misc.log1,
 	    sctp_clog.x.misc.log2,
 	    sctp_clog.x.misc.log3,
 	    sctp_clog.x.misc.log4);
 #endif
 }
 
 void
 sctp_log_sack(uint32_t old_cumack, uint32_t cumack, uint32_t tsn, uint16_t gaps, uint16_t dups, int from)
 {
 #if defined(SCTP_LOCAL_TRACE_BUF)
 	struct sctp_cwnd_log sctp_clog;
 
 	sctp_clog.x.sack.cumack = cumack;
 	sctp_clog.x.sack.oldcumack = old_cumack;
 	sctp_clog.x.sack.tsn = tsn;
 	sctp_clog.x.sack.numGaps = gaps;
 	sctp_clog.x.sack.numDups = dups;
 	SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
 	    SCTP_LOG_EVENT_SACK,
 	    from,
 	    sctp_clog.x.misc.log1,
 	    sctp_clog.x.misc.log2,
 	    sctp_clog.x.misc.log3,
 	    sctp_clog.x.misc.log4);
 #endif
 }
 
 void
 sctp_log_map(uint32_t map, uint32_t cum, uint32_t high, int from)
 {
 #if defined(SCTP_LOCAL_TRACE_BUF)
 	struct sctp_cwnd_log sctp_clog;
 
 	memset(&sctp_clog, 0, sizeof(sctp_clog));
 	sctp_clog.x.map.base = map;
 	sctp_clog.x.map.cum = cum;
 	sctp_clog.x.map.high = high;
 	SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
 	    SCTP_LOG_EVENT_MAP,
 	    from,
 	    sctp_clog.x.misc.log1,
 	    sctp_clog.x.misc.log2,
 	    sctp_clog.x.misc.log3,
 	    sctp_clog.x.misc.log4);
 #endif
 }
 
 void
 sctp_log_fr(uint32_t biggest_tsn, uint32_t biggest_new_tsn, uint32_t tsn, int from)
 {
 #if defined(SCTP_LOCAL_TRACE_BUF)
 	struct sctp_cwnd_log sctp_clog;
 
 	memset(&sctp_clog, 0, sizeof(sctp_clog));
 	sctp_clog.x.fr.largest_tsn = biggest_tsn;
 	sctp_clog.x.fr.largest_new_tsn = biggest_new_tsn;
 	sctp_clog.x.fr.tsn = tsn;
 	SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
 	    SCTP_LOG_EVENT_FR,
 	    from,
 	    sctp_clog.x.misc.log1,
 	    sctp_clog.x.misc.log2,
 	    sctp_clog.x.misc.log3,
 	    sctp_clog.x.misc.log4);
 #endif
 }
 
 #ifdef SCTP_MBUF_LOGGING
 void
 sctp_log_mb(struct mbuf *m, int from)
 {
 #if defined(SCTP_LOCAL_TRACE_BUF)
 	struct sctp_cwnd_log sctp_clog;
 
 	sctp_clog.x.mb.mp = m;
 	sctp_clog.x.mb.mbuf_flags = (uint8_t)(SCTP_BUF_GET_FLAGS(m));
 	sctp_clog.x.mb.size = (uint16_t)(SCTP_BUF_LEN(m));
 	sctp_clog.x.mb.data = SCTP_BUF_AT(m, 0);
 	if (SCTP_BUF_IS_EXTENDED(m)) {
 		sctp_clog.x.mb.ext = SCTP_BUF_EXTEND_BASE(m);
 		sctp_clog.x.mb.refcnt = (uint8_t)(SCTP_BUF_EXTEND_REFCNT(m));
 	} else {
 		sctp_clog.x.mb.ext = 0;
 		sctp_clog.x.mb.refcnt = 0;
 	}
 	SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
 	    SCTP_LOG_EVENT_MBUF,
 	    from,
 	    sctp_clog.x.misc.log1,
 	    sctp_clog.x.misc.log2,
 	    sctp_clog.x.misc.log3,
 	    sctp_clog.x.misc.log4);
 #endif
 }
 
 void
 sctp_log_mbc(struct mbuf *m, int from)
 {
 	struct mbuf *mat;
 
 	for (mat = m; mat; mat = SCTP_BUF_NEXT(mat)) {
 		sctp_log_mb(mat, from);
 	}
 }
 #endif
 
 void
 sctp_log_strm_del(struct sctp_queued_to_read *control, struct sctp_queued_to_read *poschk, int from)
 {
 #if defined(SCTP_LOCAL_TRACE_BUF)
 	struct sctp_cwnd_log sctp_clog;
 
 	if (control == NULL) {
 		SCTP_PRINTF("Gak log of NULL?\n");
 		return;
 	}
 	sctp_clog.x.strlog.stcb = control->stcb;
 	sctp_clog.x.strlog.n_tsn = control->sinfo_tsn;
 	sctp_clog.x.strlog.n_sseq = (uint16_t)control->mid;
 	sctp_clog.x.strlog.strm = control->sinfo_stream;
 	if (poschk != NULL) {
 		sctp_clog.x.strlog.e_tsn = poschk->sinfo_tsn;
 		sctp_clog.x.strlog.e_sseq = (uint16_t)poschk->mid;
 	} else {
 		sctp_clog.x.strlog.e_tsn = 0;
 		sctp_clog.x.strlog.e_sseq = 0;
 	}
 	SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
 	    SCTP_LOG_EVENT_STRM,
 	    from,
 	    sctp_clog.x.misc.log1,
 	    sctp_clog.x.misc.log2,
 	    sctp_clog.x.misc.log3,
 	    sctp_clog.x.misc.log4);
 #endif
 }
 
 void
 sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *net, int augment, uint8_t from)
 {
 #if defined(SCTP_LOCAL_TRACE_BUF)
 	struct sctp_cwnd_log sctp_clog;
 
 	sctp_clog.x.cwnd.net = net;
 	if (stcb->asoc.send_queue_cnt > 255)
 		sctp_clog.x.cwnd.cnt_in_send = 255;
 	else
 		sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt;
 	if (stcb->asoc.stream_queue_cnt > 255)
 		sctp_clog.x.cwnd.cnt_in_str = 255;
 	else
 		sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt;
 
 	if (net) {
 		sctp_clog.x.cwnd.cwnd_new_value = net->cwnd;
 		sctp_clog.x.cwnd.inflight = net->flight_size;
 		sctp_clog.x.cwnd.pseudo_cumack = net->pseudo_cumack;
 		sctp_clog.x.cwnd.meets_pseudo_cumack = net->new_pseudo_cumack;
 		sctp_clog.x.cwnd.need_new_pseudo_cumack = net->find_pseudo_cumack;
 	}
 	if (SCTP_CWNDLOG_PRESEND == from) {
 		sctp_clog.x.cwnd.meets_pseudo_cumack = stcb->asoc.peers_rwnd;
 	}
 	sctp_clog.x.cwnd.cwnd_augment = augment;
 	SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
 	    SCTP_LOG_EVENT_CWND,
 	    from,
 	    sctp_clog.x.misc.log1,
 	    sctp_clog.x.misc.log2,
 	    sctp_clog.x.misc.log3,
 	    sctp_clog.x.misc.log4);
 #endif
 }
 
 void
 sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from)
 {
 #if defined(SCTP_LOCAL_TRACE_BUF)
 	struct sctp_cwnd_log sctp_clog;
 
 	memset(&sctp_clog, 0, sizeof(sctp_clog));
 	if (inp) {
 		sctp_clog.x.lock.sock = (void *)inp->sctp_socket;
 
 	} else {
 		sctp_clog.x.lock.sock = (void *)NULL;
 	}
 	sctp_clog.x.lock.inp = (void *)inp;
 	if (stcb) {
 		sctp_clog.x.lock.tcb_lock = mtx_owned(&stcb->tcb_mtx);
 	} else {
 		sctp_clog.x.lock.tcb_lock = SCTP_LOCK_UNKNOWN;
 	}
 	if (inp) {
 		sctp_clog.x.lock.inp_lock = mtx_owned(&inp->inp_mtx);
 		sctp_clog.x.lock.create_lock = mtx_owned(&inp->inp_create_mtx);
 	} else {
 		sctp_clog.x.lock.inp_lock = SCTP_LOCK_UNKNOWN;
 		sctp_clog.x.lock.create_lock = SCTP_LOCK_UNKNOWN;
 	}
 	sctp_clog.x.lock.info_lock = rw_wowned(&SCTP_BASE_INFO(ipi_ep_mtx));
 	if (inp && (inp->sctp_socket)) {
 		sctp_clog.x.lock.sock_lock = mtx_owned(SOCK_MTX(inp->sctp_socket));
 		sctp_clog.x.lock.sockrcvbuf_lock = mtx_owned(SOCKBUF_MTX(&inp->sctp_socket->so_rcv));
 		sctp_clog.x.lock.socksndbuf_lock = mtx_owned(SOCKBUF_MTX(&inp->sctp_socket->so_snd));
 	} else {
 		sctp_clog.x.lock.sock_lock = SCTP_LOCK_UNKNOWN;
 		sctp_clog.x.lock.sockrcvbuf_lock = SCTP_LOCK_UNKNOWN;
 		sctp_clog.x.lock.socksndbuf_lock = SCTP_LOCK_UNKNOWN;
 	}
 	SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
 	    SCTP_LOG_LOCK_EVENT,
 	    from,
 	    sctp_clog.x.misc.log1,
 	    sctp_clog.x.misc.log2,
 	    sctp_clog.x.misc.log3,
 	    sctp_clog.x.misc.log4);
 #endif
 }
 
 void
 sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *net, int error, int burst, uint8_t from)
 {
 #if defined(SCTP_LOCAL_TRACE_BUF)
 	struct sctp_cwnd_log sctp_clog;
 
 	memset(&sctp_clog, 0, sizeof(sctp_clog));
 	sctp_clog.x.cwnd.net = net;
 	sctp_clog.x.cwnd.cwnd_new_value = error;
 	sctp_clog.x.cwnd.inflight = net->flight_size;
 	sctp_clog.x.cwnd.cwnd_augment = burst;
 	if (stcb->asoc.send_queue_cnt > 255)
 		sctp_clog.x.cwnd.cnt_in_send = 255;
 	else
 		sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt;
 	if (stcb->asoc.stream_queue_cnt > 255)
 		sctp_clog.x.cwnd.cnt_in_str = 255;
 	else
 		sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt;
 	SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
 	    SCTP_LOG_EVENT_MAXBURST,
 	    from,
 	    sctp_clog.x.misc.log1,
 	    sctp_clog.x.misc.log2,
 	    sctp_clog.x.misc.log3,
 	    sctp_clog.x.misc.log4);
 #endif
 }
 
 void
 sctp_log_rwnd(uint8_t from, uint32_t peers_rwnd, uint32_t snd_size, uint32_t overhead)
 {
 #if defined(SCTP_LOCAL_TRACE_BUF)
 	struct sctp_cwnd_log sctp_clog;
 
 	sctp_clog.x.rwnd.rwnd = peers_rwnd;
 	sctp_clog.x.rwnd.send_size = snd_size;
 	sctp_clog.x.rwnd.overhead = overhead;
 	sctp_clog.x.rwnd.new_rwnd = 0;
 	SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
 	    SCTP_LOG_EVENT_RWND,
 	    from,
 	    sctp_clog.x.misc.log1,
 	    sctp_clog.x.misc.log2,
 	    sctp_clog.x.misc.log3,
 	    sctp_clog.x.misc.log4);
 #endif
 }
 
 void
 sctp_log_rwnd_set(uint8_t from, uint32_t peers_rwnd, uint32_t flight_size, uint32_t overhead, uint32_t a_rwndval)
 {
 #if defined(SCTP_LOCAL_TRACE_BUF)
 	struct sctp_cwnd_log sctp_clog;
 
 	sctp_clog.x.rwnd.rwnd = peers_rwnd;
 	sctp_clog.x.rwnd.send_size = flight_size;
 	sctp_clog.x.rwnd.overhead = overhead;
 	sctp_clog.x.rwnd.new_rwnd = a_rwndval;
 	SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
 	    SCTP_LOG_EVENT_RWND,
 	    from,
 	    sctp_clog.x.misc.log1,
 	    sctp_clog.x.misc.log2,
 	    sctp_clog.x.misc.log3,
 	    sctp_clog.x.misc.log4);
 #endif
 }
 
 #ifdef SCTP_MBCNT_LOGGING
 static void
 sctp_log_mbcnt(uint8_t from, uint32_t total_oq, uint32_t book, uint32_t total_mbcnt_q, uint32_t mbcnt)
 {
 #if defined(SCTP_LOCAL_TRACE_BUF)
 	struct sctp_cwnd_log sctp_clog;
 
 	sctp_clog.x.mbcnt.total_queue_size = total_oq;
 	sctp_clog.x.mbcnt.size_change = book;
 	sctp_clog.x.mbcnt.total_queue_mb_size = total_mbcnt_q;
 	sctp_clog.x.mbcnt.mbcnt_change = mbcnt;
 	SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
 	    SCTP_LOG_EVENT_MBCNT,
 	    from,
 	    sctp_clog.x.misc.log1,
 	    sctp_clog.x.misc.log2,
 	    sctp_clog.x.misc.log3,
 	    sctp_clog.x.misc.log4);
 #endif
 }
 #endif
 
 void
 sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d)
 {
 #if defined(SCTP_LOCAL_TRACE_BUF)
 	SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
 	    SCTP_LOG_MISC_EVENT,
 	    from,
 	    a, b, c, d);
 #endif
 }
 
 void
 sctp_wakeup_log(struct sctp_tcb *stcb, uint32_t wake_cnt, int from)
 {
 #if defined(SCTP_LOCAL_TRACE_BUF)
 	struct sctp_cwnd_log sctp_clog;
 
 	sctp_clog.x.wake.stcb = (void *)stcb;
 	sctp_clog.x.wake.wake_cnt = wake_cnt;
 	sctp_clog.x.wake.flight = stcb->asoc.total_flight_count;
 	sctp_clog.x.wake.send_q = stcb->asoc.send_queue_cnt;
 	sctp_clog.x.wake.sent_q = stcb->asoc.sent_queue_cnt;
 
 	if (stcb->asoc.stream_queue_cnt < 0xff)
 		sctp_clog.x.wake.stream_qcnt = (uint8_t)stcb->asoc.stream_queue_cnt;
 	else
 		sctp_clog.x.wake.stream_qcnt = 0xff;
 
 	if (stcb->asoc.chunks_on_out_queue < 0xff)
 		sctp_clog.x.wake.chunks_on_oque = (uint8_t)stcb->asoc.chunks_on_out_queue;
 	else
 		sctp_clog.x.wake.chunks_on_oque = 0xff;
 
 	sctp_clog.x.wake.sctpflags = 0;
 	/* set in the defered mode stuff */
 	if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE)
 		sctp_clog.x.wake.sctpflags |= 1;
 	if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT)
 		sctp_clog.x.wake.sctpflags |= 2;
 	if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT)
 		sctp_clog.x.wake.sctpflags |= 4;
 	/* what about the sb */
 	if (stcb->sctp_socket) {
 		struct socket *so = stcb->sctp_socket;
 
 		sctp_clog.x.wake.sbflags = (uint8_t)((so->so_snd.sb_flags & 0x00ff));
 	} else {
 		sctp_clog.x.wake.sbflags = 0xff;
 	}
 	SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
 	    SCTP_LOG_EVENT_WAKE,
 	    from,
 	    sctp_clog.x.misc.log1,
 	    sctp_clog.x.misc.log2,
 	    sctp_clog.x.misc.log3,
 	    sctp_clog.x.misc.log4);
 #endif
 }
 
 void
 sctp_log_block(uint8_t from, struct sctp_association *asoc, ssize_t sendlen)
 {
 #if defined(SCTP_LOCAL_TRACE_BUF)
 	struct sctp_cwnd_log sctp_clog;
 
 	sctp_clog.x.blk.onsb = asoc->total_output_queue_size;
 	sctp_clog.x.blk.send_sent_qcnt = (uint16_t)(asoc->send_queue_cnt + asoc->sent_queue_cnt);
 	sctp_clog.x.blk.peer_rwnd = asoc->peers_rwnd;
 	sctp_clog.x.blk.stream_qcnt = (uint16_t)asoc->stream_queue_cnt;
 	sctp_clog.x.blk.chunks_on_oque = (uint16_t)asoc->chunks_on_out_queue;
 	sctp_clog.x.blk.flight_size = (uint16_t)(asoc->total_flight / 1024);
 	sctp_clog.x.blk.sndlen = (uint32_t)sendlen;
 	SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
 	    SCTP_LOG_EVENT_BLOCK,
 	    from,
 	    sctp_clog.x.misc.log1,
 	    sctp_clog.x.misc.log2,
 	    sctp_clog.x.misc.log3,
 	    sctp_clog.x.misc.log4);
 #endif
 }
 
 int
 sctp_fill_stat_log(void *optval SCTP_UNUSED, size_t *optsize SCTP_UNUSED)
 {
 	/* May need to fix this if ktrdump does not work */
 	return (0);
 }
 
 #ifdef SCTP_AUDITING_ENABLED
 uint8_t sctp_audit_data[SCTP_AUDIT_SIZE][2];
 static int sctp_audit_indx = 0;
 
 static
 void
 sctp_print_audit_report(void)
 {
 	int i;
 	int cnt;
 
 	cnt = 0;
 	for (i = sctp_audit_indx; i < SCTP_AUDIT_SIZE; i++) {
 		if ((sctp_audit_data[i][0] == 0xe0) &&
 		    (sctp_audit_data[i][1] == 0x01)) {
 			cnt = 0;
 			SCTP_PRINTF("\n");
 		} else if (sctp_audit_data[i][0] == 0xf0) {
 			cnt = 0;
 			SCTP_PRINTF("\n");
 		} else if ((sctp_audit_data[i][0] == 0xc0) &&
 		    (sctp_audit_data[i][1] == 0x01)) {
 			SCTP_PRINTF("\n");
 			cnt = 0;
 		}
 		SCTP_PRINTF("%2.2x%2.2x ", (uint32_t)sctp_audit_data[i][0],
 		    (uint32_t)sctp_audit_data[i][1]);
 		cnt++;
 		if ((cnt % 14) == 0)
 			SCTP_PRINTF("\n");
 	}
 	for (i = 0; i < sctp_audit_indx; i++) {
 		if ((sctp_audit_data[i][0] == 0xe0) &&
 		    (sctp_audit_data[i][1] == 0x01)) {
 			cnt = 0;
 			SCTP_PRINTF("\n");
 		} else if (sctp_audit_data[i][0] == 0xf0) {
 			cnt = 0;
 			SCTP_PRINTF("\n");
 		} else if ((sctp_audit_data[i][0] == 0xc0) &&
 		    (sctp_audit_data[i][1] == 0x01)) {
 			SCTP_PRINTF("\n");
 			cnt = 0;
 		}
 		SCTP_PRINTF("%2.2x%2.2x ", (uint32_t)sctp_audit_data[i][0],
 		    (uint32_t)sctp_audit_data[i][1]);
 		cnt++;
 		if ((cnt % 14) == 0)
 			SCTP_PRINTF("\n");
 	}
 	SCTP_PRINTF("\n");
 }
 
 void
 sctp_auditing(int from, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
     struct sctp_nets *net)
 {
 	int resend_cnt, tot_out, rep, tot_book_cnt;
 	struct sctp_nets *lnet;
 	struct sctp_tmit_chunk *chk;
 
 	sctp_audit_data[sctp_audit_indx][0] = 0xAA;
 	sctp_audit_data[sctp_audit_indx][1] = 0x000000ff & from;
 	sctp_audit_indx++;
 	if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
 		sctp_audit_indx = 0;
 	}
 	if (inp == NULL) {
 		sctp_audit_data[sctp_audit_indx][0] = 0xAF;
 		sctp_audit_data[sctp_audit_indx][1] = 0x01;
 		sctp_audit_indx++;
 		if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
 			sctp_audit_indx = 0;
 		}
 		return;
 	}
 	if (stcb == NULL) {
 		sctp_audit_data[sctp_audit_indx][0] = 0xAF;
 		sctp_audit_data[sctp_audit_indx][1] = 0x02;
 		sctp_audit_indx++;
 		if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
 			sctp_audit_indx = 0;
 		}
 		return;
 	}
 	sctp_audit_data[sctp_audit_indx][0] = 0xA1;
 	sctp_audit_data[sctp_audit_indx][1] =
 	    (0x000000ff & stcb->asoc.sent_queue_retran_cnt);
 	sctp_audit_indx++;
 	if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
 		sctp_audit_indx = 0;
 	}
 	rep = 0;
 	tot_book_cnt = 0;
 	resend_cnt = tot_out = 0;
 	TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
 		if (chk->sent == SCTP_DATAGRAM_RESEND) {
 			resend_cnt++;
 		} else if (chk->sent < SCTP_DATAGRAM_RESEND) {
 			tot_out += chk->book_size;
 			tot_book_cnt++;
 		}
 	}
 	if (resend_cnt != stcb->asoc.sent_queue_retran_cnt) {
 		sctp_audit_data[sctp_audit_indx][0] = 0xAF;
 		sctp_audit_data[sctp_audit_indx][1] = 0xA1;
 		sctp_audit_indx++;
 		if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
 			sctp_audit_indx = 0;
 		}
 		SCTP_PRINTF("resend_cnt:%d asoc-tot:%d\n",
 		    resend_cnt, stcb->asoc.sent_queue_retran_cnt);
 		rep = 1;
 		stcb->asoc.sent_queue_retran_cnt = resend_cnt;
 		sctp_audit_data[sctp_audit_indx][0] = 0xA2;
 		sctp_audit_data[sctp_audit_indx][1] =
 		    (0x000000ff & stcb->asoc.sent_queue_retran_cnt);
 		sctp_audit_indx++;
 		if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
 			sctp_audit_indx = 0;
 		}
 	}
 	if (tot_out != stcb->asoc.total_flight) {
 		sctp_audit_data[sctp_audit_indx][0] = 0xAF;
 		sctp_audit_data[sctp_audit_indx][1] = 0xA2;
 		sctp_audit_indx++;
 		if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
 			sctp_audit_indx = 0;
 		}
 		rep = 1;
 		SCTP_PRINTF("tot_flt:%d asoc_tot:%d\n", tot_out,
 		    (int)stcb->asoc.total_flight);
 		stcb->asoc.total_flight = tot_out;
 	}
 	if (tot_book_cnt != stcb->asoc.total_flight_count) {
 		sctp_audit_data[sctp_audit_indx][0] = 0xAF;
 		sctp_audit_data[sctp_audit_indx][1] = 0xA5;
 		sctp_audit_indx++;
 		if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
 			sctp_audit_indx = 0;
 		}
 		rep = 1;
 		SCTP_PRINTF("tot_flt_book:%d\n", tot_book_cnt);
 
 		stcb->asoc.total_flight_count = tot_book_cnt;
 	}
 	tot_out = 0;
 	TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
 		tot_out += lnet->flight_size;
 	}
 	if (tot_out != stcb->asoc.total_flight) {
 		sctp_audit_data[sctp_audit_indx][0] = 0xAF;
 		sctp_audit_data[sctp_audit_indx][1] = 0xA3;
 		sctp_audit_indx++;
 		if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
 			sctp_audit_indx = 0;
 		}
 		rep = 1;
 		SCTP_PRINTF("real flight:%d net total was %d\n",
 		    stcb->asoc.total_flight, tot_out);
 		/* now corrective action */
 		TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
 			tot_out = 0;
 			TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
 				if ((chk->whoTo == lnet) &&
 				    (chk->sent < SCTP_DATAGRAM_RESEND)) {
 					tot_out += chk->book_size;
 				}
 			}
 			if (lnet->flight_size != tot_out) {
 				SCTP_PRINTF("net:%p flight was %d corrected to %d\n",
 				    (void *)lnet, lnet->flight_size,
 				    tot_out);
 				lnet->flight_size = tot_out;
 			}
 		}
 	}
 	if (rep) {
 		sctp_print_audit_report();
 	}
 }
 
 void
 sctp_audit_log(uint8_t ev, uint8_t fd)
 {
 
 	sctp_audit_data[sctp_audit_indx][0] = ev;
 	sctp_audit_data[sctp_audit_indx][1] = fd;
 	sctp_audit_indx++;
 	if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
 		sctp_audit_indx = 0;
 	}
 }
 
 #endif
 
 /*
  * The conversion from time to ticks and vice versa is done by rounding
  * upwards. This way we can test in the code the time to be positive and
  * know that this corresponds to a positive number of ticks.
  */
 
 uint32_t
 sctp_msecs_to_ticks(uint32_t msecs)
 {
 	uint64_t temp;
 	uint32_t ticks;
 
 	if (hz == 1000) {
 		ticks = msecs;
 	} else {
 		temp = (((uint64_t)msecs * hz) + 999) / 1000;
 		if (temp > UINT32_MAX) {
 			ticks = UINT32_MAX;
 		} else {
 			ticks = (uint32_t)temp;
 		}
 	}
 	return (ticks);
 }
 
 uint32_t
 sctp_ticks_to_msecs(uint32_t ticks)
 {
 	uint64_t temp;
 	uint32_t msecs;
 
 	if (hz == 1000) {
 		msecs = ticks;
 	} else {
 		temp = (((uint64_t)ticks * 1000) + (hz - 1)) / hz;
 		if (temp > UINT32_MAX) {
 			msecs = UINT32_MAX;
 		} else {
 			msecs = (uint32_t)temp;
 		}
 	}
 	return (msecs);
 }
 
 uint32_t
 sctp_secs_to_ticks(uint32_t secs)
 {
 	uint64_t temp;
 	uint32_t ticks;
 
 	temp = (uint64_t)secs * hz;
 	if (temp > UINT32_MAX) {
 		ticks = UINT32_MAX;
 	} else {
 		ticks = (uint32_t)temp;
 	}
 	return (ticks);
 }
 
 uint32_t
 sctp_ticks_to_secs(uint32_t ticks)
 {
 	uint64_t temp;
 	uint32_t secs;
 
 	temp = ((uint64_t)ticks + (hz - 1)) / hz;
 	if (temp > UINT32_MAX) {
 		secs = UINT32_MAX;
 	} else {
 		secs = (uint32_t)temp;
 	}
 	return (secs);
 }
 
 /*
  * sctp_stop_timers_for_shutdown() should be called
  * when entering the SHUTDOWN_SENT or SHUTDOWN_ACK_SENT
  * state to make sure that all timers are stopped.
  */
 void
 sctp_stop_timers_for_shutdown(struct sctp_tcb *stcb)
 {
 	struct sctp_inpcb *inp;
 	struct sctp_nets *net;
 
 	inp = stcb->sctp_ep;
 
 	sctp_timer_stop(SCTP_TIMER_TYPE_RECV, inp, stcb, NULL,
 	    SCTP_FROM_SCTPUTIL + SCTP_LOC_12);
 	sctp_timer_stop(SCTP_TIMER_TYPE_STRRESET, inp, stcb, NULL,
 	    SCTP_FROM_SCTPUTIL + SCTP_LOC_13);
 	sctp_timer_stop(SCTP_TIMER_TYPE_ASCONF, inp, stcb, NULL,
 	    SCTP_FROM_SCTPUTIL + SCTP_LOC_14);
 	sctp_timer_stop(SCTP_TIMER_TYPE_AUTOCLOSE, inp, stcb, NULL,
 	    SCTP_FROM_SCTPUTIL + SCTP_LOC_15);
 	TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 		sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
 		    SCTP_FROM_SCTPUTIL + SCTP_LOC_16);
 		sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net,
 		    SCTP_FROM_SCTPUTIL + SCTP_LOC_17);
 	}
 }
 
 void
 sctp_stop_association_timers(struct sctp_tcb *stcb, bool stop_assoc_kill_timer)
 {
 	struct sctp_inpcb *inp;
 	struct sctp_nets *net;
 
 	inp = stcb->sctp_ep;
 	sctp_timer_stop(SCTP_TIMER_TYPE_RECV, inp, stcb, NULL,
 	    SCTP_FROM_SCTPUTIL + SCTP_LOC_18);
 	sctp_timer_stop(SCTP_TIMER_TYPE_STRRESET, inp, stcb, NULL,
 	    SCTP_FROM_SCTPUTIL + SCTP_LOC_19);
 	if (stop_assoc_kill_timer) {
 		sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL,
 		    SCTP_FROM_SCTPUTIL + SCTP_LOC_20);
 	}
 	sctp_timer_stop(SCTP_TIMER_TYPE_ASCONF, inp, stcb, NULL,
 	    SCTP_FROM_SCTPUTIL + SCTP_LOC_21);
 	sctp_timer_stop(SCTP_TIMER_TYPE_AUTOCLOSE, inp, stcb, NULL,
 	    SCTP_FROM_SCTPUTIL + SCTP_LOC_22);
 	sctp_timer_stop(SCTP_TIMER_TYPE_SHUTDOWNGUARD, inp, stcb, NULL,
 	    SCTP_FROM_SCTPUTIL + SCTP_LOC_23);
 	/* Mobility adaptation */
 	sctp_timer_stop(SCTP_TIMER_TYPE_PRIM_DELETED, inp, stcb, NULL,
 	    SCTP_FROM_SCTPUTIL + SCTP_LOC_24);
 	TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 		sctp_timer_stop(SCTP_TIMER_TYPE_SEND, inp, stcb, net,
 		    SCTP_FROM_SCTPUTIL + SCTP_LOC_25);
 		sctp_timer_stop(SCTP_TIMER_TYPE_INIT, inp, stcb, net,
 		    SCTP_FROM_SCTPUTIL + SCTP_LOC_26);
 		sctp_timer_stop(SCTP_TIMER_TYPE_SHUTDOWN, inp, stcb, net,
 		    SCTP_FROM_SCTPUTIL + SCTP_LOC_27);
 		sctp_timer_stop(SCTP_TIMER_TYPE_COOKIE, inp, stcb, net,
 		    SCTP_FROM_SCTPUTIL + SCTP_LOC_28);
 		sctp_timer_stop(SCTP_TIMER_TYPE_SHUTDOWNACK, inp, stcb, net,
 		    SCTP_FROM_SCTPUTIL + SCTP_LOC_29);
 		sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
 		    SCTP_FROM_SCTPUTIL + SCTP_LOC_30);
 		sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net,
 		    SCTP_FROM_SCTPUTIL + SCTP_LOC_31);
 	}
 }
 
 /*
  * A list of sizes based on typical mtu's, used only if next hop size not
  * returned. These values MUST be multiples of 4 and MUST be ordered.
  */
 static uint32_t sctp_mtu_sizes[] = {
 	68,
 	296,
 	508,
 	512,
 	544,
 	576,
 	1004,
 	1492,
 	1500,
 	1536,
 	2000,
 	2048,
 	4352,
 	4464,
 	8168,
 	17912,
 	32000,
 	65532
 };
 
 /*
  * Return the largest MTU in sctp_mtu_sizes smaller than val.
  * If val is smaller than the minimum, just return the largest
  * multiple of 4 smaller or equal to val.
  * Ensure that the result is a multiple of 4.
  */
 uint32_t
 sctp_get_prev_mtu(uint32_t val)
 {
 	uint32_t i;
 
 	val &= 0xfffffffc;
 	if (val <= sctp_mtu_sizes[0]) {
 		return (val);
 	}
 	for (i = 1; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) {
 		if (val <= sctp_mtu_sizes[i]) {
 			break;
 		}
 	}
 	KASSERT((sctp_mtu_sizes[i - 1] & 0x00000003) == 0,
 	    ("sctp_mtu_sizes[%u] not a multiple of 4", i - 1));
 	return (sctp_mtu_sizes[i - 1]);
 }
 
 /*
  * Return the smallest MTU in sctp_mtu_sizes larger than val.
  * If val is larger than the maximum, just return the largest multiple of 4 smaller
  * or equal to val.
  * Ensure that the result is a multiple of 4.
  */
 uint32_t
 sctp_get_next_mtu(uint32_t val)
 {
 	/* select another MTU that is just bigger than this one */
 	uint32_t i;
 
 	val &= 0xfffffffc;
 	for (i = 0; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) {
 		if (val < sctp_mtu_sizes[i]) {
 			KASSERT((sctp_mtu_sizes[i] & 0x00000003) == 0,
 			    ("sctp_mtu_sizes[%u] not a multiple of 4", i));
 			return (sctp_mtu_sizes[i]);
 		}
 	}
 	return (val);
 }
 
 void
 sctp_fill_random_store(struct sctp_pcb *m)
 {
 	/*
 	 * Here we use the MD5/SHA-1 to hash with our good randomNumbers and
 	 * our counter. The result becomes our good random numbers and we
 	 * then setup to give these out. Note that we do no locking to
 	 * protect this. This is ok, since if competing folks call this we
 	 * will get more gobbled gook in the random store which is what we
 	 * want. There is a danger that two guys will use the same random
 	 * numbers, but thats ok too since that is random as well :->
 	 */
 	m->store_at = 0;
 	(void)sctp_hmac(SCTP_HMAC, (uint8_t *)m->random_numbers,
 	    sizeof(m->random_numbers), (uint8_t *)&m->random_counter,
 	    sizeof(m->random_counter), (uint8_t *)m->random_store);
 	m->random_counter++;
 }
 
 uint32_t
 sctp_select_initial_TSN(struct sctp_pcb *inp)
 {
 	/*
 	 * A true implementation should use random selection process to get
 	 * the initial stream sequence number, using RFC1750 as a good
 	 * guideline
 	 */
 	uint32_t x, *xp;
 	uint8_t *p;
 	int store_at, new_store;
 
 	if (inp->initial_sequence_debug != 0) {
 		uint32_t ret;
 
 		ret = inp->initial_sequence_debug;
 		inp->initial_sequence_debug++;
 		return (ret);
 	}
 retry:
 	store_at = inp->store_at;
 	new_store = store_at + sizeof(uint32_t);
 	if (new_store >= (SCTP_SIGNATURE_SIZE - 3)) {
 		new_store = 0;
 	}
 	if (!atomic_cmpset_int(&inp->store_at, store_at, new_store)) {
 		goto retry;
 	}
 	if (new_store == 0) {
 		/* Refill the random store */
 		sctp_fill_random_store(inp);
 	}
 	p = &inp->random_store[store_at];
 	xp = (uint32_t *)p;
 	x = *xp;
 	return (x);
 }
 
 uint32_t
 sctp_select_a_tag(struct sctp_inpcb *inp, uint16_t lport, uint16_t rport, int check)
 {
 	uint32_t x;
 	struct timeval now;
 
 	if (check) {
 		(void)SCTP_GETTIME_TIMEVAL(&now);
 	}
 	for (;;) {
 		x = sctp_select_initial_TSN(&inp->sctp_ep);
 		if (x == 0) {
 			/* we never use 0 */
 			continue;
 		}
 		if (!check || sctp_is_vtag_good(x, lport, rport, &now)) {
 			break;
 		}
 	}
 	return (x);
 }
 
 int32_t
 sctp_map_assoc_state(int kernel_state)
 {
 	int32_t user_state;
 
 	if (kernel_state & SCTP_STATE_WAS_ABORTED) {
 		user_state = SCTP_CLOSED;
 	} else if (kernel_state & SCTP_STATE_SHUTDOWN_PENDING) {
 		user_state = SCTP_SHUTDOWN_PENDING;
 	} else {
 		switch (kernel_state & SCTP_STATE_MASK) {
 		case SCTP_STATE_EMPTY:
 			user_state = SCTP_CLOSED;
 			break;
 		case SCTP_STATE_INUSE:
 			user_state = SCTP_CLOSED;
 			break;
 		case SCTP_STATE_COOKIE_WAIT:
 			user_state = SCTP_COOKIE_WAIT;
 			break;
 		case SCTP_STATE_COOKIE_ECHOED:
 			user_state = SCTP_COOKIE_ECHOED;
 			break;
 		case SCTP_STATE_OPEN:
 			user_state = SCTP_ESTABLISHED;
 			break;
 		case SCTP_STATE_SHUTDOWN_SENT:
 			user_state = SCTP_SHUTDOWN_SENT;
 			break;
 		case SCTP_STATE_SHUTDOWN_RECEIVED:
 			user_state = SCTP_SHUTDOWN_RECEIVED;
 			break;
 		case SCTP_STATE_SHUTDOWN_ACK_SENT:
 			user_state = SCTP_SHUTDOWN_ACK_SENT;
 			break;
 		default:
 			user_state = SCTP_CLOSED;
 			break;
 		}
 	}
 	return (user_state);
 }
 
 int
 sctp_init_asoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
     uint32_t override_tag, uint32_t initial_tsn, uint32_t vrf_id,
     uint16_t o_strms)
 {
 	struct sctp_association *asoc;
 
 	/*
 	 * Anything set to zero is taken care of by the allocation routine's
 	 * bzero
 	 */
 
 	/*
 	 * Up front select what scoping to apply on addresses I tell my peer
 	 * Not sure what to do with these right now, we will need to come up
 	 * with a way to set them. We may need to pass them through from the
 	 * caller in the sctp_aloc_assoc() function.
 	 */
 	int i;
 #if defined(SCTP_DETAILED_STR_STATS)
 	int j;
 #endif
 
 	asoc = &stcb->asoc;
 	/* init all variables to a known value. */
 	SCTP_SET_STATE(stcb, SCTP_STATE_INUSE);
 	asoc->max_burst = inp->sctp_ep.max_burst;
 	asoc->fr_max_burst = inp->sctp_ep.fr_max_burst;
 	asoc->heart_beat_delay = sctp_ticks_to_msecs(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]);
 	asoc->cookie_life = inp->sctp_ep.def_cookie_life;
 	asoc->sctp_cmt_on_off = inp->sctp_cmt_on_off;
 	asoc->ecn_supported = inp->ecn_supported;
 	asoc->prsctp_supported = inp->prsctp_supported;
 	asoc->auth_supported = inp->auth_supported;
 	asoc->asconf_supported = inp->asconf_supported;
 	asoc->reconfig_supported = inp->reconfig_supported;
 	asoc->nrsack_supported = inp->nrsack_supported;
 	asoc->pktdrop_supported = inp->pktdrop_supported;
 	asoc->idata_supported = inp->idata_supported;
 	asoc->rcv_edmid = inp->rcv_edmid;
 	asoc->snd_edmid = SCTP_EDMID_NONE;
 	asoc->sctp_cmt_pf = (uint8_t)0;
 	asoc->sctp_frag_point = inp->sctp_frag_point;
 	asoc->sctp_features = inp->sctp_features;
 	asoc->default_dscp = inp->sctp_ep.default_dscp;
 	asoc->max_cwnd = inp->max_cwnd;
 #ifdef INET6
 	if (inp->sctp_ep.default_flowlabel) {
 		asoc->default_flowlabel = inp->sctp_ep.default_flowlabel;
 	} else {
 		if (inp->ip_inp.inp.inp_flags & IN6P_AUTOFLOWLABEL) {
 			asoc->default_flowlabel = sctp_select_initial_TSN(&inp->sctp_ep);
 			asoc->default_flowlabel &= 0x000fffff;
 			asoc->default_flowlabel |= 0x80000000;
 		} else {
 			asoc->default_flowlabel = 0;
 		}
 	}
 #endif
 	asoc->sb_send_resv = 0;
 	if (override_tag) {
 		asoc->my_vtag = override_tag;
 	} else {
 		asoc->my_vtag = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 1);
 	}
 	/* Get the nonce tags */
 	asoc->my_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
 	asoc->peer_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
 	asoc->vrf_id = vrf_id;
 
 #ifdef SCTP_ASOCLOG_OF_TSNS
 	asoc->tsn_in_at = 0;
 	asoc->tsn_out_at = 0;
 	asoc->tsn_in_wrapped = 0;
 	asoc->tsn_out_wrapped = 0;
 	asoc->cumack_log_at = 0;
 	asoc->cumack_log_atsnt = 0;
 #endif
 #ifdef SCTP_FS_SPEC_LOG
 	asoc->fs_index = 0;
 #endif
 	asoc->refcnt = 0;
 	asoc->assoc_up_sent = 0;
 	if (override_tag) {
 		asoc->init_seq_number = initial_tsn;
 	} else {
 		asoc->init_seq_number = sctp_select_initial_TSN(&inp->sctp_ep);
 	}
 	asoc->asconf_seq_out = asoc->init_seq_number;
 	asoc->str_reset_seq_out = asoc->init_seq_number;
 	asoc->sending_seq = asoc->init_seq_number;
 	asoc->asconf_seq_out_acked = asoc->init_seq_number - 1;
 	/* we are optimistic here */
 	asoc->peer_supports_nat = 0;
 	asoc->sent_queue_retran_cnt = 0;
 
 	/* for CMT */
 	asoc->last_net_cmt_send_started = NULL;
 
 	asoc->last_acked_seq = asoc->init_seq_number - 1;
 	asoc->advanced_peer_ack_point = asoc->init_seq_number - 1;
 	asoc->asconf_seq_in = asoc->init_seq_number - 1;
 
 	/* here we are different, we hold the next one we expect */
 	asoc->str_reset_seq_in = asoc->init_seq_number;
 
 	asoc->initial_init_rto_max = inp->sctp_ep.initial_init_rto_max;
 	asoc->initial_rto = inp->sctp_ep.initial_rto;
 
 	asoc->default_mtu = inp->sctp_ep.default_mtu;
 	asoc->max_init_times = inp->sctp_ep.max_init_times;
 	asoc->max_send_times = inp->sctp_ep.max_send_times;
 	asoc->def_net_failure = inp->sctp_ep.def_net_failure;
 	asoc->def_net_pf_threshold = inp->sctp_ep.def_net_pf_threshold;
 	asoc->free_chunk_cnt = 0;
 
 	asoc->iam_blocking = 0;
 	asoc->context = inp->sctp_context;
 	asoc->local_strreset_support = inp->local_strreset_support;
 	asoc->def_send = inp->def_send;
 	asoc->delayed_ack = sctp_ticks_to_msecs(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
 	asoc->sack_freq = inp->sctp_ep.sctp_sack_freq;
 	asoc->pr_sctp_cnt = 0;
 	asoc->total_output_queue_size = 0;
 
 	if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
 		asoc->scope.ipv6_addr_legal = 1;
 		if (SCTP_IPV6_V6ONLY(inp) == 0) {
 			asoc->scope.ipv4_addr_legal = 1;
 		} else {
 			asoc->scope.ipv4_addr_legal = 0;
 		}
 	} else {
 		asoc->scope.ipv6_addr_legal = 0;
 		asoc->scope.ipv4_addr_legal = 1;
 	}
 
 	asoc->my_rwnd = max(SCTP_SB_LIMIT_RCV(inp->sctp_socket), SCTP_MINIMAL_RWND);
 	asoc->peers_rwnd = SCTP_SB_LIMIT_RCV(inp->sctp_socket);
 
 	asoc->smallest_mtu = 0;
 	asoc->minrto = inp->sctp_ep.sctp_minrto;
 	asoc->maxrto = inp->sctp_ep.sctp_maxrto;
 
 	asoc->stream_locked_on = 0;
 	asoc->ecn_echo_cnt_onq = 0;
 	asoc->stream_locked = 0;
 
 	asoc->send_sack = 1;
 
 	LIST_INIT(&asoc->sctp_restricted_addrs);
 
 	TAILQ_INIT(&asoc->nets);
 	TAILQ_INIT(&asoc->pending_reply_queue);
 	TAILQ_INIT(&asoc->asconf_ack_sent);
 	/* Setup to fill the hb random cache at first HB */
 	asoc->hb_random_idx = 4;
 
 	asoc->sctp_autoclose_ticks = inp->sctp_ep.auto_close_time;
 
 	stcb->asoc.congestion_control_module = inp->sctp_ep.sctp_default_cc_module;
 	stcb->asoc.cc_functions = sctp_cc_functions[inp->sctp_ep.sctp_default_cc_module];
 
 	stcb->asoc.stream_scheduling_module = inp->sctp_ep.sctp_default_ss_module;
 	stcb->asoc.ss_functions = sctp_ss_functions[inp->sctp_ep.sctp_default_ss_module];
 
 	/*
 	 * Now the stream parameters, here we allocate space for all streams
 	 * that we request by default.
 	 */
 	asoc->strm_realoutsize = asoc->streamoutcnt = asoc->pre_open_streams =
 	    o_strms;
 	SCTP_MALLOC(asoc->strmout, struct sctp_stream_out *,
 	    asoc->streamoutcnt * sizeof(struct sctp_stream_out),
 	    SCTP_M_STRMO);
 	if (asoc->strmout == NULL) {
 		/* big trouble no memory */
 		SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
 		return (ENOMEM);
 	}
 	SCTP_TCB_LOCK(stcb);
 	for (i = 0; i < asoc->streamoutcnt; i++) {
 		/*
 		 * inbound side must be set to 0xffff, also NOTE when we get
 		 * the INIT-ACK back (for INIT sender) we MUST reduce the
 		 * count (streamoutcnt) but first check if we sent to any of
 		 * the upper streams that were dropped (if some were). Those
 		 * that were dropped must be notified to the upper layer as
 		 * failed to send.
 		 */
 		TAILQ_INIT(&asoc->strmout[i].outqueue);
 		asoc->ss_functions.sctp_ss_init_stream(stcb, &asoc->strmout[i], NULL);
 		asoc->strmout[i].chunks_on_queues = 0;
 #if defined(SCTP_DETAILED_STR_STATS)
 		for (j = 0; j < SCTP_PR_SCTP_MAX + 1; j++) {
 			asoc->strmout[i].abandoned_sent[j] = 0;
 			asoc->strmout[i].abandoned_unsent[j] = 0;
 		}
 #else
 		asoc->strmout[i].abandoned_sent[0] = 0;
 		asoc->strmout[i].abandoned_unsent[0] = 0;
 #endif
 		asoc->strmout[i].next_mid_ordered = 0;
 		asoc->strmout[i].next_mid_unordered = 0;
 		asoc->strmout[i].sid = i;
 		asoc->strmout[i].last_msg_incomplete = 0;
 		asoc->strmout[i].state = SCTP_STREAM_OPENING;
 	}
 	asoc->ss_functions.sctp_ss_init(stcb, asoc);
 	SCTP_TCB_UNLOCK(stcb);
 
 	/* Now the mapping array */
 	asoc->mapping_array_size = SCTP_INITIAL_MAPPING_ARRAY;
 	SCTP_MALLOC(asoc->mapping_array, uint8_t *, asoc->mapping_array_size,
 	    SCTP_M_MAP);
 	if (asoc->mapping_array == NULL) {
 		SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
 		SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
 		return (ENOMEM);
 	}
 	memset(asoc->mapping_array, 0, asoc->mapping_array_size);
 	SCTP_MALLOC(asoc->nr_mapping_array, uint8_t *, asoc->mapping_array_size,
 	    SCTP_M_MAP);
 	if (asoc->nr_mapping_array == NULL) {
 		SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
 		SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
 		SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
 		return (ENOMEM);
 	}
 	memset(asoc->nr_mapping_array, 0, asoc->mapping_array_size);
 
 	/* Now the init of the other outqueues */
 	TAILQ_INIT(&asoc->free_chunks);
 	TAILQ_INIT(&asoc->control_send_queue);
 	TAILQ_INIT(&asoc->asconf_send_queue);
 	TAILQ_INIT(&asoc->send_queue);
 	TAILQ_INIT(&asoc->sent_queue);
 	TAILQ_INIT(&asoc->resetHead);
 	asoc->max_inbound_streams = inp->sctp_ep.max_open_streams_intome;
 	TAILQ_INIT(&asoc->asconf_queue);
 	/* authentication fields */
 	asoc->authinfo.random = NULL;
 	asoc->authinfo.active_keyid = 0;
 	asoc->authinfo.assoc_key = NULL;
 	asoc->authinfo.assoc_keyid = 0;
 	asoc->authinfo.recv_key = NULL;
 	asoc->authinfo.recv_keyid = 0;
 	LIST_INIT(&asoc->shared_keys);
 	asoc->marked_retrans = 0;
 	asoc->port = inp->sctp_ep.port;
 	asoc->timoinit = 0;
 	asoc->timodata = 0;
 	asoc->timosack = 0;
 	asoc->timoshutdown = 0;
 	asoc->timoheartbeat = 0;
 	asoc->timocookie = 0;
 	asoc->timoshutdownack = 0;
 	(void)SCTP_GETTIME_TIMEVAL(&asoc->start_time);
 	asoc->discontinuity_time = asoc->start_time;
 	for (i = 0; i < SCTP_PR_SCTP_MAX + 1; i++) {
 		asoc->abandoned_unsent[i] = 0;
 		asoc->abandoned_sent[i] = 0;
 	}
 	/*
 	 * sa_ignore MEMLEAK {memory is put in the assoc mapping array and
 	 * freed later when the association is freed.
 	 */
 	return (0);
 }
 
 void
 sctp_print_mapping_array(struct sctp_association *asoc)
 {
 	unsigned int i, limit;
 
 	SCTP_PRINTF("Mapping array size: %d, baseTSN: %8.8x, cumAck: %8.8x, highestTSN: (%8.8x, %8.8x).\n",
 	    asoc->mapping_array_size,
 	    asoc->mapping_array_base_tsn,
 	    asoc->cumulative_tsn,
 	    asoc->highest_tsn_inside_map,
 	    asoc->highest_tsn_inside_nr_map);
 	for (limit = asoc->mapping_array_size; limit > 1; limit--) {
 		if (asoc->mapping_array[limit - 1] != 0) {
 			break;
 		}
 	}
 	SCTP_PRINTF("Renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
 	for (i = 0; i < limit; i++) {
 		SCTP_PRINTF("%2.2x%c", asoc->mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
 	}
 	if (limit % 16)
 		SCTP_PRINTF("\n");
 	for (limit = asoc->mapping_array_size; limit > 1; limit--) {
 		if (asoc->nr_mapping_array[limit - 1]) {
 			break;
 		}
 	}
 	SCTP_PRINTF("Non renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
 	for (i = 0; i < limit; i++) {
 		SCTP_PRINTF("%2.2x%c", asoc->nr_mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
 	}
 	if (limit % 16)
 		SCTP_PRINTF("\n");
 }
 
 int
 sctp_expand_mapping_array(struct sctp_association *asoc, uint32_t needed)
 {
 	/* mapping array needs to grow */
 	uint8_t *new_array1, *new_array2;
 	uint32_t new_size;
 
 	new_size = asoc->mapping_array_size + ((needed + 7) / 8 + SCTP_MAPPING_ARRAY_INCR);
 	SCTP_MALLOC(new_array1, uint8_t *, new_size, SCTP_M_MAP);
 	SCTP_MALLOC(new_array2, uint8_t *, new_size, SCTP_M_MAP);
 	if ((new_array1 == NULL) || (new_array2 == NULL)) {
 		/* can't get more, forget it */
 		SCTP_PRINTF("No memory for expansion of SCTP mapping array %d\n", new_size);
 		if (new_array1) {
 			SCTP_FREE(new_array1, SCTP_M_MAP);
 		}
 		if (new_array2) {
 			SCTP_FREE(new_array2, SCTP_M_MAP);
 		}
 		return (-1);
 	}
 	memset(new_array1, 0, new_size);
 	memset(new_array2, 0, new_size);
 	memcpy(new_array1, asoc->mapping_array, asoc->mapping_array_size);
 	memcpy(new_array2, asoc->nr_mapping_array, asoc->mapping_array_size);
 	SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
 	SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
 	asoc->mapping_array = new_array1;
 	asoc->nr_mapping_array = new_array2;
 	asoc->mapping_array_size = new_size;
 	return (0);
 }
 
 static void
 sctp_iterator_work(struct sctp_iterator *it)
 {
 	struct epoch_tracker et;
 	struct sctp_inpcb *tinp;
 	int iteration_count = 0;
 	int inp_skip = 0;
 	int first_in = 1;
 
 	NET_EPOCH_ENTER(et);
 	SCTP_INP_INFO_RLOCK();
 	SCTP_ITERATOR_LOCK();
 	sctp_it_ctl.cur_it = it;
 	if (it->inp) {
 		SCTP_INP_RLOCK(it->inp);
 		SCTP_INP_DECR_REF(it->inp);
 	}
 	if (it->inp == NULL) {
 		/* iterator is complete */
 done_with_iterator:
 		sctp_it_ctl.cur_it = NULL;
 		SCTP_ITERATOR_UNLOCK();
 		SCTP_INP_INFO_RUNLOCK();
 		if (it->function_atend != NULL) {
 			(*it->function_atend) (it->pointer, it->val);
 		}
 		SCTP_FREE(it, SCTP_M_ITER);
 		NET_EPOCH_EXIT(et);
 		return;
 	}
 select_a_new_ep:
 	if (first_in) {
 		first_in = 0;
 	} else {
 		SCTP_INP_RLOCK(it->inp);
 	}
 	while (((it->pcb_flags) &&
 	    ((it->inp->sctp_flags & it->pcb_flags) != it->pcb_flags)) ||
 	    ((it->pcb_features) &&
 	    ((it->inp->sctp_features & it->pcb_features) != it->pcb_features))) {
 		/* endpoint flags or features don't match, so keep looking */
 		if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
 			SCTP_INP_RUNLOCK(it->inp);
 			goto done_with_iterator;
 		}
 		tinp = it->inp;
 		it->inp = LIST_NEXT(it->inp, sctp_list);
 		it->stcb = NULL;
 		SCTP_INP_RUNLOCK(tinp);
 		if (it->inp == NULL) {
 			goto done_with_iterator;
 		}
 		SCTP_INP_RLOCK(it->inp);
 	}
 	/* now go through each assoc which is in the desired state */
 	if (it->done_current_ep == 0) {
 		if (it->function_inp != NULL)
 			inp_skip = (*it->function_inp) (it->inp, it->pointer, it->val);
 		it->done_current_ep = 1;
 	}
 	if (it->stcb == NULL) {
 		/* run the per instance function */
 		it->stcb = LIST_FIRST(&it->inp->sctp_asoc_list);
 	}
 	if ((inp_skip) || it->stcb == NULL) {
 		if (it->function_inp_end != NULL) {
 			inp_skip = (*it->function_inp_end) (it->inp,
 			    it->pointer,
 			    it->val);
 		}
 		SCTP_INP_RUNLOCK(it->inp);
 		goto no_stcb;
 	}
 	while (it->stcb != NULL) {
 		SCTP_TCB_LOCK(it->stcb);
 		if (it->asoc_state && ((it->stcb->asoc.state & it->asoc_state) != it->asoc_state)) {
 			/* not in the right state... keep looking */
 			SCTP_TCB_UNLOCK(it->stcb);
 			goto next_assoc;
 		}
 		/* see if we have limited out the iterator loop */
 		iteration_count++;
 		if (iteration_count > SCTP_ITERATOR_MAX_AT_ONCE) {
 			/* Pause to let others grab the lock */
 			atomic_add_int(&it->stcb->asoc.refcnt, 1);
 			SCTP_TCB_UNLOCK(it->stcb);
 			SCTP_INP_INCR_REF(it->inp);
 			SCTP_INP_RUNLOCK(it->inp);
 			SCTP_ITERATOR_UNLOCK();
 			SCTP_INP_INFO_RUNLOCK();
 			SCTP_INP_INFO_RLOCK();
 			SCTP_ITERATOR_LOCK();
 			if (sctp_it_ctl.iterator_flags) {
 				/* We won't be staying here */
 				SCTP_INP_DECR_REF(it->inp);
 				atomic_subtract_int(&it->stcb->asoc.refcnt, 1);
 				if (sctp_it_ctl.iterator_flags &
 				    SCTP_ITERATOR_STOP_CUR_IT) {
 					sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_IT;
 					goto done_with_iterator;
 				}
 				if (sctp_it_ctl.iterator_flags &
 				    SCTP_ITERATOR_STOP_CUR_INP) {
 					sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_INP;
 					goto no_stcb;
 				}
 				/* If we reach here huh? */
 				SCTP_PRINTF("Unknown it ctl flag %x\n",
 				    sctp_it_ctl.iterator_flags);
 				sctp_it_ctl.iterator_flags = 0;
 			}
 			SCTP_INP_RLOCK(it->inp);
 			SCTP_INP_DECR_REF(it->inp);
 			SCTP_TCB_LOCK(it->stcb);
 			atomic_subtract_int(&it->stcb->asoc.refcnt, 1);
 			iteration_count = 0;
 		}
 		KASSERT(it->inp == it->stcb->sctp_ep,
 		    ("%s: stcb %p does not belong to inp %p, but inp %p",
 		    __func__, it->stcb, it->inp, it->stcb->sctp_ep));
 		SCTP_INP_RLOCK_ASSERT(it->inp);
 		SCTP_TCB_LOCK_ASSERT(it->stcb);
 
 		/* run function on this one */
 		(*it->function_assoc) (it->inp, it->stcb, it->pointer, it->val);
 		SCTP_INP_RLOCK_ASSERT(it->inp);
 		SCTP_TCB_LOCK_ASSERT(it->stcb);
 
 		/*
 		 * we lie here, it really needs to have its own type but
 		 * first I must verify that this won't effect things :-0
 		 */
 		if (it->no_chunk_output == 0) {
 			sctp_chunk_output(it->inp, it->stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
 			SCTP_INP_RLOCK_ASSERT(it->inp);
 			SCTP_TCB_LOCK_ASSERT(it->stcb);
 		}
 
 		SCTP_TCB_UNLOCK(it->stcb);
 next_assoc:
 		it->stcb = LIST_NEXT(it->stcb, sctp_tcblist);
 		if (it->stcb == NULL) {
 			/* Run last function */
 			if (it->function_inp_end != NULL) {
 				inp_skip = (*it->function_inp_end) (it->inp,
 				    it->pointer,
 				    it->val);
 			}
 		}
 	}
 	SCTP_INP_RUNLOCK(it->inp);
 no_stcb:
 	/* done with all assocs on this endpoint, move on to next endpoint */
 	it->done_current_ep = 0;
 	if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
 		it->inp = NULL;
 	} else {
 		it->inp = LIST_NEXT(it->inp, sctp_list);
 	}
 	it->stcb = NULL;
 	if (it->inp == NULL) {
 		goto done_with_iterator;
 	}
 	goto select_a_new_ep;
 }
 
 void
 sctp_iterator_worker(void)
 {
 	struct sctp_iterator *it;
 
 	/* This function is called with the WQ lock in place */
 	sctp_it_ctl.iterator_running = 1;
 	while ((it = TAILQ_FIRST(&sctp_it_ctl.iteratorhead)) != NULL) {
 		/* now lets work on this one */
 		TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
 		SCTP_IPI_ITERATOR_WQ_UNLOCK();
 		CURVNET_SET(it->vn);
 		sctp_iterator_work(it);
 		CURVNET_RESTORE();
 		SCTP_IPI_ITERATOR_WQ_LOCK();
 		/* sa_ignore FREED_MEMORY */
 	}
 	sctp_it_ctl.iterator_running = 0;
 	return;
 }
 
 static void
 sctp_handle_addr_wq(void)
 {
 	/* deal with the ADDR wq from the rtsock calls */
 	struct sctp_laddr *wi, *nwi;
 	struct sctp_asconf_iterator *asc;
 
 	SCTP_MALLOC(asc, struct sctp_asconf_iterator *,
 	    sizeof(struct sctp_asconf_iterator), SCTP_M_ASC_IT);
 	if (asc == NULL) {
 		/* Try later, no memory */
 		sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
 		    (struct sctp_inpcb *)NULL,
 		    (struct sctp_tcb *)NULL,
 		    (struct sctp_nets *)NULL);
 		return;
 	}
 	LIST_INIT(&asc->list_of_work);
 	asc->cnt = 0;
 
 	LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
 		LIST_REMOVE(wi, sctp_nxt_addr);
 		LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr);
 		asc->cnt++;
 	}
 
 	if (asc->cnt == 0) {
 		SCTP_FREE(asc, SCTP_M_ASC_IT);
 	} else {
 		int ret;
 
 		ret = sctp_initiate_iterator(sctp_asconf_iterator_ep,
 		    sctp_asconf_iterator_stcb,
 		    NULL,	/* No ep end for boundall */
 		    SCTP_PCB_FLAGS_BOUNDALL,
 		    SCTP_PCB_ANY_FEATURES,
 		    SCTP_ASOC_ANY_STATE,
 		    (void *)asc, 0,
 		    sctp_asconf_iterator_end, NULL, 0);
 		if (ret) {
 			SCTP_PRINTF("Failed to initiate iterator for handle_addr_wq\n");
 			/*
 			 * Freeing if we are stopping or put back on the
 			 * addr_wq.
 			 */
 			if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
 				sctp_asconf_iterator_end(asc, 0);
 			} else {
 				LIST_FOREACH(wi, &asc->list_of_work, sctp_nxt_addr) {
 					LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
 				}
 				SCTP_FREE(asc, SCTP_M_ASC_IT);
 			}
 		}
 	}
 }
 
 /*-
  * The following table shows which pointers for the inp, stcb, or net are
  * stored for each timer after it was started.
  *
  *|Name                         |Timer                        |inp |stcb|net |
  *|-----------------------------|-----------------------------|----|----|----|
  *|SCTP_TIMER_TYPE_SEND         |net->rxt_timer               |Yes |Yes |Yes |
  *|SCTP_TIMER_TYPE_INIT         |net->rxt_timer               |Yes |Yes |Yes |
  *|SCTP_TIMER_TYPE_RECV         |stcb->asoc.dack_timer        |Yes |Yes |No  |
  *|SCTP_TIMER_TYPE_SHUTDOWN     |net->rxt_timer               |Yes |Yes |Yes |
  *|SCTP_TIMER_TYPE_HEARTBEAT    |net->hb_timer                |Yes |Yes |Yes |
  *|SCTP_TIMER_TYPE_COOKIE       |net->rxt_timer               |Yes |Yes |Yes |
  *|SCTP_TIMER_TYPE_NEWCOOKIE    |inp->sctp_ep.signature_change|Yes |No  |No  |
  *|SCTP_TIMER_TYPE_PATHMTURAISE |net->pmtu_timer              |Yes |Yes |Yes |
  *|SCTP_TIMER_TYPE_SHUTDOWNACK  |net->rxt_timer               |Yes |Yes |Yes |
  *|SCTP_TIMER_TYPE_ASCONF       |stcb->asoc.asconf_timer      |Yes |Yes |Yes |
  *|SCTP_TIMER_TYPE_SHUTDOWNGUARD|stcb->asoc.shut_guard_timer  |Yes |Yes |No  |
  *|SCTP_TIMER_TYPE_AUTOCLOSE    |stcb->asoc.autoclose_timer   |Yes |Yes |No  |
  *|SCTP_TIMER_TYPE_STRRESET     |stcb->asoc.strreset_timer    |Yes |Yes |No  |
  *|SCTP_TIMER_TYPE_INPKILL      |inp->sctp_ep.signature_change|Yes |No  |No  |
  *|SCTP_TIMER_TYPE_ASOCKILL     |stcb->asoc.strreset_timer    |Yes |Yes |No  |
  *|SCTP_TIMER_TYPE_ADDR_WQ      |SCTP_BASE_INFO(addr_wq_timer)|No  |No  |No  |
  *|SCTP_TIMER_TYPE_PRIM_DELETED |stcb->asoc.delete_prim_timer |Yes |Yes |No  |
  */
 
 void
 sctp_timeout_handler(void *t)
 {
 	struct epoch_tracker et;
 	struct timeval tv;
 	struct sctp_inpcb *inp;
 	struct sctp_tcb *stcb;
 	struct sctp_nets *net;
 	struct sctp_timer *tmr;
 	struct mbuf *op_err;
 	int type;
 	int i, secret;
 	bool did_output, released_asoc_reference;
 
 	/*
 	 * If inp, stcb or net are not NULL, then references to these were
 	 * added when the timer was started, and must be released before
 	 * this function returns.
 	 */
 	tmr = (struct sctp_timer *)t;
 	inp = (struct sctp_inpcb *)tmr->ep;
 	stcb = (struct sctp_tcb *)tmr->tcb;
 	net = (struct sctp_nets *)tmr->net;
 	CURVNET_SET((struct vnet *)tmr->vnet);
 	NET_EPOCH_ENTER(et);
 	released_asoc_reference = false;
 
 #ifdef SCTP_AUDITING_ENABLED
 	sctp_audit_log(0xF0, (uint8_t)tmr->type);
 	sctp_auditing(3, inp, stcb, net);
 #endif
 
 	/* sanity checks... */
 	KASSERT(tmr->self == NULL || tmr->self == tmr,
 	    ("sctp_timeout_handler: tmr->self corrupted"));
 	KASSERT(SCTP_IS_TIMER_TYPE_VALID(tmr->type),
 	    ("sctp_timeout_handler: invalid timer type %d", tmr->type));
 	type = tmr->type;
 	KASSERT(stcb == NULL || stcb->sctp_ep == inp,
 	    ("sctp_timeout_handler of type %d: inp = %p, stcb->sctp_ep %p",
 	    type, stcb, stcb->sctp_ep));
 	tmr->stopped_from = 0xa001;
 	if ((stcb != NULL) && (stcb->asoc.state == SCTP_STATE_EMPTY)) {
 		SCTPDBG(SCTP_DEBUG_TIMER2,
 		    "Timer type %d handler exiting due to CLOSED association.\n",
 		    type);
 		goto out_decr;
 	}
 	tmr->stopped_from = 0xa002;
 	SCTPDBG(SCTP_DEBUG_TIMER2, "Timer type %d goes off.\n", type);
 	if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
 		SCTPDBG(SCTP_DEBUG_TIMER2,
 		    "Timer type %d handler exiting due to not being active.\n",
 		    type);
 		goto out_decr;
 	}
 
 	tmr->stopped_from = 0xa003;
 	if (stcb) {
 		SCTP_TCB_LOCK(stcb);
 		/*
 		 * Release reference so that association can be freed if
 		 * necessary below. This is safe now that we have acquired
 		 * the lock.
 		 */
 		atomic_subtract_int(&stcb->asoc.refcnt, 1);
 		released_asoc_reference = true;
 		if ((type != SCTP_TIMER_TYPE_ASOCKILL) &&
 		    ((stcb->asoc.state == SCTP_STATE_EMPTY) ||
 		    (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED))) {
 			SCTPDBG(SCTP_DEBUG_TIMER2,
 			    "Timer type %d handler exiting due to CLOSED association.\n",
 			    type);
 			goto out;
 		}
 	} else if (inp != NULL) {
 		SCTP_INP_WLOCK(inp);
 	} else {
 		SCTP_WQ_ADDR_LOCK();
 	}
 
 	/* Record in stopped_from which timeout occurred. */
 	tmr->stopped_from = type;
 	/* mark as being serviced now */
 	if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
 		/*
 		 * Callout has been rescheduled.
 		 */
 		goto out;
 	}
 	if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
 		/*
 		 * Not active, so no action.
 		 */
 		goto out;
 	}
 	SCTP_OS_TIMER_DEACTIVATE(&tmr->timer);
 
 	/* call the handler for the appropriate timer type */
 	switch (type) {
 	case SCTP_TIMER_TYPE_SEND:
 		KASSERT(inp != NULL && stcb != NULL && net != NULL,
 		    ("timeout of type %d: inp = %p, stcb = %p, net = %p",
 		    type, inp, stcb, net));
 		SCTP_STAT_INCR(sctps_timodata);
 		stcb->asoc.timodata++;
 		stcb->asoc.num_send_timers_up--;
 		if (stcb->asoc.num_send_timers_up < 0) {
 			stcb->asoc.num_send_timers_up = 0;
 		}
 		SCTP_TCB_LOCK_ASSERT(stcb);
 		if (sctp_t3rxt_timer(inp, stcb, net)) {
 			/* no need to unlock on tcb its gone */
 
 			goto out_decr;
 		}
 		SCTP_TCB_LOCK_ASSERT(stcb);
 #ifdef SCTP_AUDITING_ENABLED
 		sctp_auditing(4, inp, stcb, net);
 #endif
 		sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
 		did_output = true;
 		if ((stcb->asoc.num_send_timers_up == 0) &&
 		    (stcb->asoc.sent_queue_cnt > 0)) {
 			struct sctp_tmit_chunk *chk;
 
 			/*
 			 * Safeguard. If there on some on the sent queue
 			 * somewhere but no timers running something is
 			 * wrong... so we start a timer on the first chunk
 			 * on the send queue on whatever net it is sent to.
 			 */
 			TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
 				if (chk->whoTo != NULL) {
 					break;
 				}
 			}
 			if (chk != NULL) {
 				sctp_timer_start(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, stcb, chk->whoTo);
 			}
 		}
 		break;
 	case SCTP_TIMER_TYPE_INIT:
 		KASSERT(inp != NULL && stcb != NULL && net != NULL,
 		    ("timeout of type %d: inp = %p, stcb = %p, net = %p",
 		    type, inp, stcb, net));
 		SCTP_STAT_INCR(sctps_timoinit);
 		stcb->asoc.timoinit++;
 		if (sctp_t1init_timer(inp, stcb, net)) {
 			/* no need to unlock on tcb its gone */
 			goto out_decr;
 		}
 		did_output = false;
 		break;
 	case SCTP_TIMER_TYPE_RECV:
 		KASSERT(inp != NULL && stcb != NULL && net == NULL,
 		    ("timeout of type %d: inp = %p, stcb = %p, net = %p",
 		    type, inp, stcb, net));
 		SCTP_STAT_INCR(sctps_timosack);
 		stcb->asoc.timosack++;
 		sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
 #ifdef SCTP_AUDITING_ENABLED
 		sctp_auditing(4, inp, stcb, NULL);
 #endif
 		sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SACK_TMR, SCTP_SO_NOT_LOCKED);
 		did_output = true;
 		break;
 	case SCTP_TIMER_TYPE_SHUTDOWN:
 		KASSERT(inp != NULL && stcb != NULL && net != NULL,
 		    ("timeout of type %d: inp = %p, stcb = %p, net = %p",
 		    type, inp, stcb, net));
 		SCTP_STAT_INCR(sctps_timoshutdown);
 		stcb->asoc.timoshutdown++;
 		if (sctp_shutdown_timer(inp, stcb, net)) {
 			/* no need to unlock on tcb its gone */
 			goto out_decr;
 		}
 #ifdef SCTP_AUDITING_ENABLED
 		sctp_auditing(4, inp, stcb, net);
 #endif
 		sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_NOT_LOCKED);
 		did_output = true;
 		break;
 	case SCTP_TIMER_TYPE_HEARTBEAT:
 		KASSERT(inp != NULL && stcb != NULL && net != NULL,
 		    ("timeout of type %d: inp = %p, stcb = %p, net = %p",
 		    type, inp, stcb, net));
 		SCTP_STAT_INCR(sctps_timoheartbeat);
 		stcb->asoc.timoheartbeat++;
 		if (sctp_heartbeat_timer(inp, stcb, net)) {
 			/* no need to unlock on tcb its gone */
 			goto out_decr;
 		}
 #ifdef SCTP_AUDITING_ENABLED
 		sctp_auditing(4, inp, stcb, net);
 #endif
 		if ((net->dest_state & SCTP_ADDR_NOHB) == 0) {
 			sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
 			sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_HB_TMR, SCTP_SO_NOT_LOCKED);
 			did_output = true;
 		} else {
 			did_output = false;
 		}
 		break;
 	case SCTP_TIMER_TYPE_COOKIE:
 		KASSERT(inp != NULL && stcb != NULL && net != NULL,
 		    ("timeout of type %d: inp = %p, stcb = %p, net = %p",
 		    type, inp, stcb, net));
 		SCTP_STAT_INCR(sctps_timocookie);
 		stcb->asoc.timocookie++;
 		if (sctp_cookie_timer(inp, stcb, net)) {
 			/* no need to unlock on tcb its gone */
 			goto out_decr;
 		}
 #ifdef SCTP_AUDITING_ENABLED
 		sctp_auditing(4, inp, stcb, net);
 #endif
 		/*
 		 * We consider T3 and Cookie timer pretty much the same with
 		 * respect to where from in chunk_output.
 		 */
 		sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
 		did_output = true;
 		break;
 	case SCTP_TIMER_TYPE_NEWCOOKIE:
 		KASSERT(inp != NULL && stcb == NULL && net == NULL,
 		    ("timeout of type %d: inp = %p, stcb = %p, net = %p",
 		    type, inp, stcb, net));
 		SCTP_STAT_INCR(sctps_timosecret);
 		(void)SCTP_GETTIME_TIMEVAL(&tv);
 		inp->sctp_ep.time_of_secret_change = tv.tv_sec;
 		inp->sctp_ep.last_secret_number =
 		    inp->sctp_ep.current_secret_number;
 		inp->sctp_ep.current_secret_number++;
 		if (inp->sctp_ep.current_secret_number >=
 		    SCTP_HOW_MANY_SECRETS) {
 			inp->sctp_ep.current_secret_number = 0;
 		}
 		secret = (int)inp->sctp_ep.current_secret_number;
 		for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
 			inp->sctp_ep.secret_key[secret][i] =
 			    sctp_select_initial_TSN(&inp->sctp_ep);
 		}
 		sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL);
 		did_output = false;
 		break;
 	case SCTP_TIMER_TYPE_PATHMTURAISE:
 		KASSERT(inp != NULL && stcb != NULL && net != NULL,
 		    ("timeout of type %d: inp = %p, stcb = %p, net = %p",
 		    type, inp, stcb, net));
 		SCTP_STAT_INCR(sctps_timopathmtu);
 		sctp_pathmtu_timer(inp, stcb, net);
 		did_output = false;
 		break;
 	case SCTP_TIMER_TYPE_SHUTDOWNACK:
 		KASSERT(inp != NULL && stcb != NULL && net != NULL,
 		    ("timeout of type %d: inp = %p, stcb = %p, net = %p",
 		    type, inp, stcb, net));
 		if (sctp_shutdownack_timer(inp, stcb, net)) {
 			/* no need to unlock on tcb its gone */
 			goto out_decr;
 		}
 		SCTP_STAT_INCR(sctps_timoshutdownack);
 		stcb->asoc.timoshutdownack++;
 #ifdef SCTP_AUDITING_ENABLED
 		sctp_auditing(4, inp, stcb, net);
 #endif
 		sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_ACK_TMR, SCTP_SO_NOT_LOCKED);
 		did_output = true;
 		break;
 	case SCTP_TIMER_TYPE_ASCONF:
 		KASSERT(inp != NULL && stcb != NULL && net != NULL,
 		    ("timeout of type %d: inp = %p, stcb = %p, net = %p",
 		    type, inp, stcb, net));
 		SCTP_STAT_INCR(sctps_timoasconf);
 		if (sctp_asconf_timer(inp, stcb, net)) {
 			/* no need to unlock on tcb its gone */
 			goto out_decr;
 		}
 #ifdef SCTP_AUDITING_ENABLED
 		sctp_auditing(4, inp, stcb, net);
 #endif
 		sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_ASCONF_TMR, SCTP_SO_NOT_LOCKED);
 		did_output = true;
 		break;
 	case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
 		KASSERT(inp != NULL && stcb != NULL && net == NULL,
 		    ("timeout of type %d: inp = %p, stcb = %p, net = %p",
 		    type, inp, stcb, net));
 		SCTP_STAT_INCR(sctps_timoshutdownguard);
 		op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
 		    "Shutdown guard timer expired");
 		sctp_abort_an_association(inp, stcb, op_err, true, SCTP_SO_NOT_LOCKED);
 		/* no need to unlock on tcb its gone */
 		goto out_decr;
 	case SCTP_TIMER_TYPE_AUTOCLOSE:
 		KASSERT(inp != NULL && stcb != NULL && net == NULL,
 		    ("timeout of type %d: inp = %p, stcb = %p, net = %p",
 		    type, inp, stcb, net));
 		SCTP_STAT_INCR(sctps_timoautoclose);
 		sctp_autoclose_timer(inp, stcb);
 		sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_AUTOCLOSE_TMR, SCTP_SO_NOT_LOCKED);
 		did_output = true;
 		break;
 	case SCTP_TIMER_TYPE_STRRESET:
 		KASSERT(inp != NULL && stcb != NULL && net == NULL,
 		    ("timeout of type %d: inp = %p, stcb = %p, net = %p",
 		    type, inp, stcb, net));
 		SCTP_STAT_INCR(sctps_timostrmrst);
 		if (sctp_strreset_timer(inp, stcb)) {
 			/* no need to unlock on tcb its gone */
 			goto out_decr;
 		}
 		sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_TMR, SCTP_SO_NOT_LOCKED);
 		did_output = true;
 		break;
 	case SCTP_TIMER_TYPE_INPKILL:
 		KASSERT(inp != NULL && stcb == NULL && net == NULL,
 		    ("timeout of type %d: inp = %p, stcb = %p, net = %p",
 		    type, inp, stcb, net));
 		SCTP_STAT_INCR(sctps_timoinpkill);
 		/*
 		 * special case, take away our increment since WE are the
 		 * killer
 		 */
 		sctp_timer_stop(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL,
 		    SCTP_FROM_SCTPUTIL + SCTP_LOC_3);
 		SCTP_INP_DECR_REF(inp);
 		SCTP_INP_WUNLOCK(inp);
 		sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
 		    SCTP_CALLED_FROM_INPKILL_TIMER);
 		inp = NULL;
 		goto out_decr;
 	case SCTP_TIMER_TYPE_ASOCKILL:
 		KASSERT(inp != NULL && stcb != NULL && net == NULL,
 		    ("timeout of type %d: inp = %p, stcb = %p, net = %p",
 		    type, inp, stcb, net));
 		SCTP_STAT_INCR(sctps_timoassockill);
 		/* Can we free it yet? */
 		sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL,
 		    SCTP_FROM_SCTPUTIL + SCTP_LOC_1);
 		(void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
 		    SCTP_FROM_SCTPUTIL + SCTP_LOC_2);
 		/*
 		 * free asoc, always unlocks (or destroy's) so prevent
 		 * duplicate unlock or unlock of a free mtx :-0
 		 */
 		stcb = NULL;
 		goto out_decr;
 	case SCTP_TIMER_TYPE_ADDR_WQ:
 		KASSERT(inp == NULL && stcb == NULL && net == NULL,
 		    ("timeout of type %d: inp = %p, stcb = %p, net = %p",
 		    type, inp, stcb, net));
 		sctp_handle_addr_wq();
 		did_output = true;
 		break;
 	case SCTP_TIMER_TYPE_PRIM_DELETED:
 		KASSERT(inp != NULL && stcb != NULL && net == NULL,
 		    ("timeout of type %d: inp = %p, stcb = %p, net = %p",
 		    type, inp, stcb, net));
 		SCTP_STAT_INCR(sctps_timodelprim);
 		sctp_delete_prim_timer(inp, stcb);
 		did_output = false;
 		break;
 	default:
 #ifdef INVARIANTS
 		panic("Unknown timer type %d", type);
 #else
 		goto out;
 #endif
 	}
 #ifdef SCTP_AUDITING_ENABLED
 	sctp_audit_log(0xF1, (uint8_t)type);
 	if (inp != NULL)
 		sctp_auditing(5, inp, stcb, net);
 #endif
 	if (did_output && (stcb != NULL)) {
 		/*
 		 * Now we need to clean up the control chunk chain if an
 		 * ECNE is on it. It must be marked as UNSENT again so next
 		 * call will continue to send it until such time that we get
 		 * a CWR, to remove it. It is, however, less likely that we
 		 * will find a ecn echo on the chain though.
 		 */
 		sctp_fix_ecn_echo(&stcb->asoc);
 	}
 out:
 	if (stcb != NULL) {
 		SCTP_TCB_UNLOCK(stcb);
 	} else if (inp != NULL) {
 		SCTP_INP_WUNLOCK(inp);
 	} else {
 		SCTP_WQ_ADDR_UNLOCK();
 	}
 
 out_decr:
 	/* These reference counts were incremented in sctp_timer_start(). */
 	if (inp != NULL) {
 		SCTP_INP_DECR_REF(inp);
 	}
 	if ((stcb != NULL) && !released_asoc_reference) {
 		atomic_subtract_int(&stcb->asoc.refcnt, 1);
 	}
 	if (net != NULL) {
 		sctp_free_remote_addr(net);
 	}
 	SCTPDBG(SCTP_DEBUG_TIMER2, "Timer type %d handler finished.\n", type);
 	CURVNET_RESTORE();
 	NET_EPOCH_EXIT(et);
 }
 
 /*-
  * The following table shows which parameters must be provided
  * when calling sctp_timer_start(). For parameters not being
  * provided, NULL must be used.
  *
  * |Name                         |inp |stcb|net |
  * |-----------------------------|----|----|----|
  * |SCTP_TIMER_TYPE_SEND         |Yes |Yes |Yes |
  * |SCTP_TIMER_TYPE_INIT         |Yes |Yes |Yes |
  * |SCTP_TIMER_TYPE_RECV         |Yes |Yes |No  |
  * |SCTP_TIMER_TYPE_SHUTDOWN     |Yes |Yes |Yes |
  * |SCTP_TIMER_TYPE_HEARTBEAT    |Yes |Yes |Yes |
  * |SCTP_TIMER_TYPE_COOKIE       |Yes |Yes |Yes |
  * |SCTP_TIMER_TYPE_NEWCOOKIE    |Yes |No  |No  |
  * |SCTP_TIMER_TYPE_PATHMTURAISE |Yes |Yes |Yes |
  * |SCTP_TIMER_TYPE_SHUTDOWNACK  |Yes |Yes |Yes |
  * |SCTP_TIMER_TYPE_ASCONF       |Yes |Yes |Yes |
  * |SCTP_TIMER_TYPE_SHUTDOWNGUARD|Yes |Yes |No  |
  * |SCTP_TIMER_TYPE_AUTOCLOSE    |Yes |Yes |No  |
  * |SCTP_TIMER_TYPE_STRRESET     |Yes |Yes |Yes |
  * |SCTP_TIMER_TYPE_INPKILL      |Yes |No  |No  |
  * |SCTP_TIMER_TYPE_ASOCKILL     |Yes |Yes |No  |
  * |SCTP_TIMER_TYPE_ADDR_WQ      |No  |No  |No  |
  * |SCTP_TIMER_TYPE_PRIM_DELETED |Yes |Yes |No  |
  *
  */
 
 void
 sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
     struct sctp_nets *net)
 {
 	struct sctp_timer *tmr;
 	uint32_t to_ticks;
 	uint32_t rndval, jitter;
 
 	KASSERT(stcb == NULL || stcb->sctp_ep == inp,
 	    ("sctp_timer_start of type %d: inp = %p, stcb->sctp_ep %p",
 	    t_type, stcb, stcb->sctp_ep));
 	tmr = NULL;
 	if (stcb != NULL) {
 		SCTP_TCB_LOCK_ASSERT(stcb);
 	} else if (inp != NULL) {
 		SCTP_INP_WLOCK_ASSERT(inp);
 	} else {
 		SCTP_WQ_ADDR_LOCK_ASSERT();
 	}
 	if (stcb != NULL) {
 		/*
 		 * Don't restart timer on association that's about to be
 		 * killed.
 		 */
 		if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) &&
 		    (t_type != SCTP_TIMER_TYPE_ASOCKILL)) {
 			SCTPDBG(SCTP_DEBUG_TIMER2,
 			    "Timer type %d not started: inp=%p, stcb=%p, net=%p (stcb deleted).\n",
 			    t_type, inp, stcb, net);
 			return;
 		}
 		/* Don't restart timer on net that's been removed. */
 		if (net != NULL && (net->dest_state & SCTP_ADDR_BEING_DELETED)) {
 			SCTPDBG(SCTP_DEBUG_TIMER2,
 			    "Timer type %d not started: inp=%p, stcb=%p, net=%p (net deleted).\n",
 			    t_type, inp, stcb, net);
 			return;
 		}
 	}
 	switch (t_type) {
 	case SCTP_TIMER_TYPE_SEND:
 		/* Here we use the RTO timer. */
 		if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		tmr = &net->rxt_timer;
 		if (net->RTO == 0) {
 			to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
 		} else {
 			to_ticks = sctp_msecs_to_ticks(net->RTO);
 		}
 		break;
 	case SCTP_TIMER_TYPE_INIT:
 		/*
 		 * Here we use the INIT timer default usually about 1
 		 * second.
 		 */
 		if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		tmr = &net->rxt_timer;
 		if (net->RTO == 0) {
 			to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
 		} else {
 			to_ticks = sctp_msecs_to_ticks(net->RTO);
 		}
 		break;
 	case SCTP_TIMER_TYPE_RECV:
 		/*
 		 * Here we use the Delayed-Ack timer value from the inp,
 		 * usually about 200ms.
 		 */
 		if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		tmr = &stcb->asoc.dack_timer;
 		to_ticks = sctp_msecs_to_ticks(stcb->asoc.delayed_ack);
 		break;
 	case SCTP_TIMER_TYPE_SHUTDOWN:
 		/* Here we use the RTO of the destination. */
 		if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		tmr = &net->rxt_timer;
 		if (net->RTO == 0) {
 			to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
 		} else {
 			to_ticks = sctp_msecs_to_ticks(net->RTO);
 		}
 		break;
 	case SCTP_TIMER_TYPE_HEARTBEAT:
 		/*
 		 * The net is used here so that we can add in the RTO. Even
 		 * though we use a different timer. We also add the HB timer
 		 * PLUS a random jitter.
 		 */
 		if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		if ((net->dest_state & SCTP_ADDR_NOHB) &&
 		    ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0)) {
 			SCTPDBG(SCTP_DEBUG_TIMER2,
 			    "Timer type %d not started: inp=%p, stcb=%p, net=%p.\n",
 			    t_type, inp, stcb, net);
 			return;
 		}
 		tmr = &net->hb_timer;
 		if (net->RTO == 0) {
 			to_ticks = stcb->asoc.initial_rto;
 		} else {
 			to_ticks = net->RTO;
 		}
-		rndval = sctp_select_initial_TSN(&inp->sctp_ep);
-		jitter = rndval % to_ticks;
-		if (to_ticks > 1) {
-			to_ticks >>= 1;
-		}
-		if (jitter < (UINT32_MAX - to_ticks)) {
-			to_ticks += jitter;
-		} else {
-			to_ticks = UINT32_MAX;
-		}
 		if (!((net->dest_state & SCTP_ADDR_UNCONFIRMED) &&
 		    (net->dest_state & SCTP_ADDR_REACHABLE)) &&
 		    ((net->dest_state & SCTP_ADDR_PF) == 0)) {
+			if (to_ticks > 1) {
+				rndval = sctp_select_initial_TSN(&inp->sctp_ep);
+				jitter = rndval % to_ticks;
+				to_ticks >>= 1;
+				if (jitter < (UINT32_MAX - to_ticks)) {
+					to_ticks += jitter;
+				} else {
+					to_ticks = UINT32_MAX;
+				}
+			}
 			if (net->heart_beat_delay < (UINT32_MAX - to_ticks)) {
 				to_ticks += net->heart_beat_delay;
 			} else {
 				to_ticks = UINT32_MAX;
 			}
 		}
 		/*
 		 * Now we must convert the to_ticks that are now in ms to
 		 * ticks.
 		 */
 		to_ticks = sctp_msecs_to_ticks(to_ticks);
 		break;
 	case SCTP_TIMER_TYPE_COOKIE:
 		/*
 		 * Here we can use the RTO timer from the network since one
 		 * RTT was complete. If a retransmission happened then we
 		 * will be using the RTO initial value.
 		 */
 		if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		tmr = &net->rxt_timer;
 		if (net->RTO == 0) {
 			to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
 		} else {
 			to_ticks = sctp_msecs_to_ticks(net->RTO);
 		}
 		break;
 	case SCTP_TIMER_TYPE_NEWCOOKIE:
 		/*
 		 * Nothing needed but the endpoint here usually about 60
 		 * minutes.
 		 */
 		if ((inp == NULL) || (stcb != NULL) || (net != NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		tmr = &inp->sctp_ep.signature_change;
 		to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_SIGNATURE];
 		break;
 	case SCTP_TIMER_TYPE_PATHMTURAISE:
 		/*
 		 * Here we use the value found in the EP for PMTUD, usually
 		 * about 10 minutes.
 		 */
 		if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		if (net->dest_state & SCTP_ADDR_NO_PMTUD) {
 			SCTPDBG(SCTP_DEBUG_TIMER2,
 			    "Timer type %d not started: inp=%p, stcb=%p, net=%p.\n",
 			    t_type, inp, stcb, net);
 			return;
 		}
 		tmr = &net->pmtu_timer;
 		to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_PMTU];
 		break;
 	case SCTP_TIMER_TYPE_SHUTDOWNACK:
 		/* Here we use the RTO of the destination. */
 		if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		tmr = &net->rxt_timer;
 		if (net->RTO == 0) {
 			to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
 		} else {
 			to_ticks = sctp_msecs_to_ticks(net->RTO);
 		}
 		break;
 	case SCTP_TIMER_TYPE_ASCONF:
 		/*
 		 * Here the timer comes from the stcb but its value is from
 		 * the net's RTO.
 		 */
 		if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		tmr = &stcb->asoc.asconf_timer;
 		if (net->RTO == 0) {
 			to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
 		} else {
 			to_ticks = sctp_msecs_to_ticks(net->RTO);
 		}
 		break;
 	case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
 		/*
 		 * Here we use the endpoints shutdown guard timer usually
 		 * about 3 minutes.
 		 */
 		if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		tmr = &stcb->asoc.shut_guard_timer;
 		if (inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] == 0) {
 			if (stcb->asoc.maxrto < UINT32_MAX / 5) {
 				to_ticks = sctp_msecs_to_ticks(5 * stcb->asoc.maxrto);
 			} else {
 				to_ticks = sctp_msecs_to_ticks(UINT32_MAX);
 			}
 		} else {
 			to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN];
 		}
 		break;
 	case SCTP_TIMER_TYPE_AUTOCLOSE:
 		if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		tmr = &stcb->asoc.autoclose_timer;
 		to_ticks = stcb->asoc.sctp_autoclose_ticks;
 		break;
 	case SCTP_TIMER_TYPE_STRRESET:
 		/*
 		 * Here the timer comes from the stcb but its value is from
 		 * the net's RTO.
 		 */
 		if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		tmr = &stcb->asoc.strreset_timer;
 		if (net->RTO == 0) {
 			to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
 		} else {
 			to_ticks = sctp_msecs_to_ticks(net->RTO);
 		}
 		break;
 	case SCTP_TIMER_TYPE_INPKILL:
 		/*
 		 * The inp is setup to die. We re-use the signature_change
 		 * timer since that has stopped and we are in the GONE
 		 * state.
 		 */
 		if ((inp == NULL) || (stcb != NULL) || (net != NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		tmr = &inp->sctp_ep.signature_change;
 		to_ticks = sctp_msecs_to_ticks(SCTP_INP_KILL_TIMEOUT);
 		break;
 	case SCTP_TIMER_TYPE_ASOCKILL:
 		if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		tmr = &stcb->asoc.strreset_timer;
 		to_ticks = sctp_msecs_to_ticks(SCTP_ASOC_KILL_TIMEOUT);
 		break;
 	case SCTP_TIMER_TYPE_ADDR_WQ:
 		if ((inp != NULL) || (stcb != NULL) || (net != NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		/* Only 1 tick away :-) */
 		tmr = &SCTP_BASE_INFO(addr_wq_timer);
 		to_ticks = SCTP_ADDRESS_TICK_DELAY;
 		break;
 	case SCTP_TIMER_TYPE_PRIM_DELETED:
 		if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		tmr = &stcb->asoc.delete_prim_timer;
 		to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
 		break;
 	default:
 #ifdef INVARIANTS
 		panic("Unknown timer type %d", t_type);
 #else
 		return;
 #endif
 	}
 	KASSERT(tmr != NULL, ("tmr is NULL for timer type %d", t_type));
 	KASSERT(to_ticks > 0, ("to_ticks == 0 for timer type %d", t_type));
 	if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
 		/*
 		 * We do NOT allow you to have it already running. If it is,
 		 * we leave the current one up unchanged.
 		 */
 		SCTPDBG(SCTP_DEBUG_TIMER2,
 		    "Timer type %d already running: inp=%p, stcb=%p, net=%p.\n",
 		    t_type, inp, stcb, net);
 		return;
 	}
 	/* At this point we can proceed. */
 	if (t_type == SCTP_TIMER_TYPE_SEND) {
 		stcb->asoc.num_send_timers_up++;
 	}
 	tmr->stopped_from = 0;
 	tmr->type = t_type;
 	tmr->ep = (void *)inp;
 	tmr->tcb = (void *)stcb;
 	if (t_type == SCTP_TIMER_TYPE_STRRESET) {
 		tmr->net = NULL;
 	} else {
 		tmr->net = (void *)net;
 	}
 	tmr->self = (void *)tmr;
 	tmr->vnet = (void *)curvnet;
 	tmr->ticks = sctp_get_tick_count();
 	if (SCTP_OS_TIMER_START(&tmr->timer, to_ticks, sctp_timeout_handler, tmr) == 0) {
 		SCTPDBG(SCTP_DEBUG_TIMER2,
 		    "Timer type %d started: ticks=%u, inp=%p, stcb=%p, net=%p.\n",
 		    t_type, to_ticks, inp, stcb, net);
 		/*
 		 * If this is a newly scheduled callout, as opposed to a
 		 * rescheduled one, increment relevant reference counts.
 		 */
 		if (tmr->ep != NULL) {
 			SCTP_INP_INCR_REF(inp);
 		}
 		if (tmr->tcb != NULL) {
 			atomic_add_int(&stcb->asoc.refcnt, 1);
 		}
 		if (tmr->net != NULL) {
 			atomic_add_int(&net->ref_count, 1);
 		}
 	} else {
 		/*
 		 * This should not happen, since we checked for pending
 		 * above.
 		 */
 		SCTPDBG(SCTP_DEBUG_TIMER2,
 		    "Timer type %d restarted: ticks=%u, inp=%p, stcb=%p, net=%p.\n",
 		    t_type, to_ticks, inp, stcb, net);
 	}
 	return;
 }
 
 /*-
  * The following table shows which parameters must be provided
  * when calling sctp_timer_stop(). For parameters not being
  * provided, NULL must be used.
  *
  * |Name                         |inp |stcb|net |
  * |-----------------------------|----|----|----|
  * |SCTP_TIMER_TYPE_SEND         |Yes |Yes |Yes |
  * |SCTP_TIMER_TYPE_INIT         |Yes |Yes |Yes |
  * |SCTP_TIMER_TYPE_RECV         |Yes |Yes |No  |
  * |SCTP_TIMER_TYPE_SHUTDOWN     |Yes |Yes |Yes |
  * |SCTP_TIMER_TYPE_HEARTBEAT    |Yes |Yes |Yes |
  * |SCTP_TIMER_TYPE_COOKIE       |Yes |Yes |Yes |
  * |SCTP_TIMER_TYPE_NEWCOOKIE    |Yes |No  |No  |
  * |SCTP_TIMER_TYPE_PATHMTURAISE |Yes |Yes |Yes |
  * |SCTP_TIMER_TYPE_SHUTDOWNACK  |Yes |Yes |Yes |
  * |SCTP_TIMER_TYPE_ASCONF       |Yes |Yes |No  |
  * |SCTP_TIMER_TYPE_SHUTDOWNGUARD|Yes |Yes |No  |
  * |SCTP_TIMER_TYPE_AUTOCLOSE    |Yes |Yes |No  |
  * |SCTP_TIMER_TYPE_STRRESET     |Yes |Yes |No  |
  * |SCTP_TIMER_TYPE_INPKILL      |Yes |No  |No  |
  * |SCTP_TIMER_TYPE_ASOCKILL     |Yes |Yes |No  |
  * |SCTP_TIMER_TYPE_ADDR_WQ      |No  |No  |No  |
  * |SCTP_TIMER_TYPE_PRIM_DELETED |Yes |Yes |No  |
  *
  */
 
 void
 sctp_timer_stop(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
     struct sctp_nets *net, uint32_t from)
 {
 	struct sctp_timer *tmr;
 
 	KASSERT(stcb == NULL || stcb->sctp_ep == inp,
 	    ("sctp_timer_stop of type %d: inp = %p, stcb->sctp_ep %p",
 	    t_type, stcb, stcb->sctp_ep));
 	if (stcb != NULL) {
 		SCTP_TCB_LOCK_ASSERT(stcb);
 	} else if (inp != NULL) {
 		SCTP_INP_WLOCK_ASSERT(inp);
 	} else {
 		SCTP_WQ_ADDR_LOCK_ASSERT();
 	}
 	tmr = NULL;
 	switch (t_type) {
 	case SCTP_TIMER_TYPE_SEND:
 		if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		tmr = &net->rxt_timer;
 		break;
 	case SCTP_TIMER_TYPE_INIT:
 		if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		tmr = &net->rxt_timer;
 		break;
 	case SCTP_TIMER_TYPE_RECV:
 		if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		tmr = &stcb->asoc.dack_timer;
 		break;
 	case SCTP_TIMER_TYPE_SHUTDOWN:
 		if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		tmr = &net->rxt_timer;
 		break;
 	case SCTP_TIMER_TYPE_HEARTBEAT:
 		if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		tmr = &net->hb_timer;
 		break;
 	case SCTP_TIMER_TYPE_COOKIE:
 		if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		tmr = &net->rxt_timer;
 		break;
 	case SCTP_TIMER_TYPE_NEWCOOKIE:
 		if ((inp == NULL) || (stcb != NULL) || (net != NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		tmr = &inp->sctp_ep.signature_change;
 		break;
 	case SCTP_TIMER_TYPE_PATHMTURAISE:
 		if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		tmr = &net->pmtu_timer;
 		break;
 	case SCTP_TIMER_TYPE_SHUTDOWNACK:
 		if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		tmr = &net->rxt_timer;
 		break;
 	case SCTP_TIMER_TYPE_ASCONF:
 		if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		tmr = &stcb->asoc.asconf_timer;
 		break;
 	case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
 		if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		tmr = &stcb->asoc.shut_guard_timer;
 		break;
 	case SCTP_TIMER_TYPE_AUTOCLOSE:
 		if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		tmr = &stcb->asoc.autoclose_timer;
 		break;
 	case SCTP_TIMER_TYPE_STRRESET:
 		if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		tmr = &stcb->asoc.strreset_timer;
 		break;
 	case SCTP_TIMER_TYPE_INPKILL:
 		/*
 		 * The inp is setup to die. We re-use the signature_change
 		 * timer since that has stopped and we are in the GONE
 		 * state.
 		 */
 		if ((inp == NULL) || (stcb != NULL) || (net != NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		tmr = &inp->sctp_ep.signature_change;
 		break;
 	case SCTP_TIMER_TYPE_ASOCKILL:
 		if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		tmr = &stcb->asoc.strreset_timer;
 		break;
 	case SCTP_TIMER_TYPE_ADDR_WQ:
 		if ((inp != NULL) || (stcb != NULL) || (net != NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		tmr = &SCTP_BASE_INFO(addr_wq_timer);
 		break;
 	case SCTP_TIMER_TYPE_PRIM_DELETED:
 		if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
 #ifdef INVARIANTS
 			panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
 			    t_type, inp, stcb, net);
 #else
 			return;
 #endif
 		}
 		tmr = &stcb->asoc.delete_prim_timer;
 		break;
 	default:
 #ifdef INVARIANTS
 		panic("Unknown timer type %d", t_type);
 #else
 		return;
 #endif
 	}
 	KASSERT(tmr != NULL, ("tmr is NULL for timer type %d", t_type));
 	if ((tmr->type != SCTP_TIMER_TYPE_NONE) &&
 	    (tmr->type != t_type)) {
 		/*
 		 * Ok we have a timer that is under joint use. Cookie timer
 		 * per chance with the SEND timer. We therefore are NOT
 		 * running the timer that the caller wants stopped.  So just
 		 * return.
 		 */
 		SCTPDBG(SCTP_DEBUG_TIMER2,
 		    "Shared timer type %d not running: inp=%p, stcb=%p, net=%p.\n",
 		    t_type, inp, stcb, net);
 		return;
 	}
 	if ((t_type == SCTP_TIMER_TYPE_SEND) && (stcb != NULL)) {
 		stcb->asoc.num_send_timers_up--;
 		if (stcb->asoc.num_send_timers_up < 0) {
 			stcb->asoc.num_send_timers_up = 0;
 		}
 	}
 	tmr->self = NULL;
 	tmr->stopped_from = from;
 	if (SCTP_OS_TIMER_STOP(&tmr->timer) == 1) {
 		KASSERT(tmr->ep == inp,
 		    ("sctp_timer_stop of type %d: inp = %p, tmr->inp = %p",
 		    t_type, inp, tmr->ep));
 		KASSERT(tmr->tcb == stcb,
 		    ("sctp_timer_stop of type %d: stcb = %p, tmr->stcb = %p",
 		    t_type, stcb, tmr->tcb));
 		KASSERT(((t_type == SCTP_TIMER_TYPE_ASCONF) && (tmr->net != NULL)) ||
 		    ((t_type != SCTP_TIMER_TYPE_ASCONF) && (tmr->net == net)),
 		    ("sctp_timer_stop of type %d: net = %p, tmr->net = %p",
 		    t_type, net, tmr->net));
 		SCTPDBG(SCTP_DEBUG_TIMER2,
 		    "Timer type %d stopped: inp=%p, stcb=%p, net=%p.\n",
 		    t_type, inp, stcb, net);
 		/*
 		 * If the timer was actually stopped, decrement reference
 		 * counts that were incremented in sctp_timer_start().
 		 */
 		if (tmr->ep != NULL) {
 			tmr->ep = NULL;
 			SCTP_INP_DECR_REF(inp);
 		}
 		if (tmr->tcb != NULL) {
 			tmr->tcb = NULL;
 			atomic_subtract_int(&stcb->asoc.refcnt, 1);
 		}
 		if (tmr->net != NULL) {
 			struct sctp_nets *tmr_net;
 
 			/*
 			 * Can't use net, since it doesn't work for
 			 * SCTP_TIMER_TYPE_ASCONF.
 			 */
 			tmr_net = tmr->net;
 			tmr->net = NULL;
 			sctp_free_remote_addr(tmr_net);
 		}
 	} else {
 		SCTPDBG(SCTP_DEBUG_TIMER2,
 		    "Timer type %d not stopped: inp=%p, stcb=%p, net=%p.\n",
 		    t_type, inp, stcb, net);
 	}
 	return;
 }
 
 uint32_t
 sctp_calculate_len(struct mbuf *m)
 {
 	struct mbuf *at;
 	uint32_t tlen;
 
 	tlen = 0;
 	for (at = m; at != NULL; at = SCTP_BUF_NEXT(at)) {
 		tlen += SCTP_BUF_LEN(at);
 	}
 	return (tlen);
 }
 
 /*
  * Given an association and starting time of the current RTT period, update
  * RTO in number of msecs. net should point to the current network.
  * Return 1, if an RTO update was performed, return 0 if no update was
  * performed due to invalid starting point.
  */
 
 int
 sctp_calculate_rto(struct sctp_tcb *stcb,
     struct sctp_association *asoc,
     struct sctp_nets *net,
     struct timeval *old,
     int rtt_from_sack)
 {
 	struct timeval now;
 	uint64_t rtt_us;	/* RTT in us */
 	int32_t rtt;		/* RTT in ms */
 	uint32_t new_rto;
 	int first_measure = 0;
 
 	/************************/
 	/* 1. calculate new RTT */
 	/************************/
 	/* get the current time */
 	if (stcb->asoc.use_precise_time) {
 		(void)SCTP_GETPTIME_TIMEVAL(&now);
 	} else {
 		(void)SCTP_GETTIME_TIMEVAL(&now);
 	}
 	if ((old->tv_sec > now.tv_sec) ||
 	    ((old->tv_sec == now.tv_sec) && (old->tv_usec > now.tv_usec))) {
 		/* The starting point is in the future. */
 		return (0);
 	}
 	timevalsub(&now, old);
 	rtt_us = (uint64_t)1000000 * (uint64_t)now.tv_sec + (uint64_t)now.tv_usec;
 	if (rtt_us > SCTP_RTO_UPPER_BOUND * 1000) {
 		/* The RTT is larger than a sane value. */
 		return (0);
 	}
 	/* store the current RTT in us */
 	net->rtt = rtt_us;
 	/* compute rtt in ms */
 	rtt = (int32_t)(net->rtt / 1000);
 	if ((asoc->cc_functions.sctp_rtt_calculated) && (rtt_from_sack == SCTP_RTT_FROM_DATA)) {
 		/*
 		 * Tell the CC module that a new update has just occurred
 		 * from a sack
 		 */
 		(*asoc->cc_functions.sctp_rtt_calculated) (stcb, net, &now);
 	}
 	/*
 	 * Do we need to determine the lan? We do this only on sacks i.e.
 	 * RTT being determined from data not non-data (HB/INIT->INITACK).
 	 */
 	if ((rtt_from_sack == SCTP_RTT_FROM_DATA) &&
 	    (net->lan_type == SCTP_LAN_UNKNOWN)) {
 		if (net->rtt > SCTP_LOCAL_LAN_RTT) {
 			net->lan_type = SCTP_LAN_INTERNET;
 		} else {
 			net->lan_type = SCTP_LAN_LOCAL;
 		}
 	}
 
 	/***************************/
 	/* 2. update RTTVAR & SRTT */
 	/***************************/
 	/*-
 	 * Compute the scaled average lastsa and the
 	 * scaled variance lastsv as described in van Jacobson
 	 * Paper "Congestion Avoidance and Control", Annex A.
 	 *
 	 * (net->lastsa >> SCTP_RTT_SHIFT) is the srtt
 	 * (net->lastsv >> SCTP_RTT_VAR_SHIFT) is the rttvar
 	 */
 	if (net->RTO_measured) {
 		rtt -= (net->lastsa >> SCTP_RTT_SHIFT);
 		net->lastsa += rtt;
 		if (rtt < 0) {
 			rtt = -rtt;
 		}
 		rtt -= (net->lastsv >> SCTP_RTT_VAR_SHIFT);
 		net->lastsv += rtt;
 		if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
 			rto_logging(net, SCTP_LOG_RTTVAR);
 		}
 	} else {
 		/* First RTO measurement */
 		net->RTO_measured = 1;
 		first_measure = 1;
 		net->lastsa = rtt << SCTP_RTT_SHIFT;
 		net->lastsv = (rtt / 2) << SCTP_RTT_VAR_SHIFT;
 		if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
 			rto_logging(net, SCTP_LOG_INITIAL_RTT);
 		}
 	}
 	if (net->lastsv == 0) {
 		net->lastsv = SCTP_CLOCK_GRANULARITY;
 	}
 	new_rto = (net->lastsa >> SCTP_RTT_SHIFT) + net->lastsv;
 	if ((new_rto > SCTP_SAT_NETWORK_MIN) &&
 	    (stcb->asoc.sat_network_lockout == 0)) {
 		stcb->asoc.sat_network = 1;
 	} else if ((!first_measure) && stcb->asoc.sat_network) {
 		stcb->asoc.sat_network = 0;
 		stcb->asoc.sat_network_lockout = 1;
 	}
 	/* bound it, per C6/C7 in Section 5.3.1 */
 	if (new_rto < stcb->asoc.minrto) {
 		new_rto = stcb->asoc.minrto;
 	}
 	if (new_rto > stcb->asoc.maxrto) {
 		new_rto = stcb->asoc.maxrto;
 	}
 	net->RTO = new_rto;
 	return (1);
 }
 
 /*
  * return a pointer to a contiguous piece of data from the given mbuf chain
  * starting at 'off' for 'len' bytes.  If the desired piece spans more than
  * one mbuf, a copy is made at 'ptr'. caller must ensure that the buffer size
  * is >= 'len' returns NULL if there there isn't 'len' bytes in the chain.
  */
 caddr_t
 sctp_m_getptr(struct mbuf *m, int off, int len, uint8_t *in_ptr)
 {
 	uint32_t count;
 	uint8_t *ptr;
 
 	ptr = in_ptr;
 	if ((off < 0) || (len <= 0))
 		return (NULL);
 
 	/* find the desired start location */
 	while ((m != NULL) && (off > 0)) {
 		if (off < SCTP_BUF_LEN(m))
 			break;
 		off -= SCTP_BUF_LEN(m);
 		m = SCTP_BUF_NEXT(m);
 	}
 	if (m == NULL)
 		return (NULL);
 
 	/* is the current mbuf large enough (eg. contiguous)? */
 	if ((SCTP_BUF_LEN(m) - off) >= len) {
 		return (mtod(m, caddr_t)+off);
 	} else {
 		/* else, it spans more than one mbuf, so save a temp copy... */
 		while ((m != NULL) && (len > 0)) {
 			count = min(SCTP_BUF_LEN(m) - off, len);
 			memcpy(ptr, mtod(m, caddr_t)+off, count);
 			len -= count;
 			ptr += count;
 			off = 0;
 			m = SCTP_BUF_NEXT(m);
 		}
 		if ((m == NULL) && (len > 0))
 			return (NULL);
 		else
 			return ((caddr_t)in_ptr);
 	}
 }
 
 struct sctp_paramhdr *
 sctp_get_next_param(struct mbuf *m,
     int offset,
     struct sctp_paramhdr *pull,
     int pull_limit)
 {
 	/* This just provides a typed signature to Peter's Pull routine */
 	return ((struct sctp_paramhdr *)sctp_m_getptr(m, offset, pull_limit,
 	    (uint8_t *)pull));
 }
 
 struct mbuf *
 sctp_add_pad_tombuf(struct mbuf *m, int padlen)
 {
 	struct mbuf *m_last;
 	caddr_t dp;
 
 	if (padlen > 3) {
 		return (NULL);
 	}
 	if (padlen <= M_TRAILINGSPACE(m)) {
 		/*
 		 * The easy way. We hope the majority of the time we hit
 		 * here :)
 		 */
 		m_last = m;
 	} else {
 		/* Hard way we must grow the mbuf chain */
 		m_last = sctp_get_mbuf_for_msg(padlen, 0, M_NOWAIT, 1, MT_DATA);
 		if (m_last == NULL) {
 			return (NULL);
 		}
 		SCTP_BUF_LEN(m_last) = 0;
 		SCTP_BUF_NEXT(m_last) = NULL;
 		SCTP_BUF_NEXT(m) = m_last;
 	}
 	dp = mtod(m_last, caddr_t)+SCTP_BUF_LEN(m_last);
 	SCTP_BUF_LEN(m_last) += padlen;
 	memset(dp, 0, padlen);
 	return (m_last);
 }
 
 struct mbuf *
 sctp_pad_lastmbuf(struct mbuf *m, int padval, struct mbuf *last_mbuf)
 {
 	/* find the last mbuf in chain and pad it */
 	struct mbuf *m_at;
 
 	if (last_mbuf != NULL) {
 		return (sctp_add_pad_tombuf(last_mbuf, padval));
 	} else {
 		for (m_at = m; m_at; m_at = SCTP_BUF_NEXT(m_at)) {
 			if (SCTP_BUF_NEXT(m_at) == NULL) {
 				return (sctp_add_pad_tombuf(m_at, padval));
 			}
 		}
 	}
 	return (NULL);
 }
 
 static void
 sctp_notify_assoc_change(uint16_t state, struct sctp_tcb *stcb,
     uint16_t error, struct sctp_abort_chunk *abort,
     bool from_peer, bool timedout, int so_locked)
 {
 	struct mbuf *m_notify;
 	struct sctp_assoc_change *sac;
 	struct sctp_queued_to_read *control;
 	struct sctp_inpcb *inp;
 	unsigned int notif_len;
 	unsigned int i;
 	uint16_t abort_len;
 
 	KASSERT(abort == NULL || from_peer,
 	    ("sctp_notify_assoc_change: ABORT chunk provided for local termination"));
 	KASSERT(!from_peer || !timedout,
 	    ("sctp_notify_assoc_change: timeouts can only be local"));
 	KASSERT(stcb != NULL, ("stcb == NULL"));
 	SCTP_TCB_LOCK_ASSERT(stcb);
 	inp = stcb->sctp_ep;
 	SCTP_INP_READ_LOCK_ASSERT(inp);
 
 	if (sctp_stcb_is_feature_on(inp, stcb, SCTP_PCB_FLAGS_RECVASSOCEVNT)) {
 		notif_len = (unsigned int)sizeof(struct sctp_assoc_change);
 		if (abort != NULL) {
 			abort_len = ntohs(abort->ch.chunk_length);
 			/*
 			 * Only SCTP_CHUNK_BUFFER_SIZE are guaranteed to be
 			 * contiguous.
 			 */
 			if (abort_len > SCTP_CHUNK_BUFFER_SIZE) {
 				abort_len = SCTP_CHUNK_BUFFER_SIZE;
 			}
 		} else {
 			abort_len = 0;
 		}
 		if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
 			notif_len += SCTP_ASSOC_SUPPORTS_MAX;
 		} else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
 			notif_len += abort_len;
 		}
 		m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
 		if (m_notify == NULL) {
 			/* Retry with smaller value. */
 			notif_len = (unsigned int)sizeof(struct sctp_assoc_change);
 			m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
 			if (m_notify == NULL) {
 				goto set_error;
 			}
 		}
 		SCTP_BUF_NEXT(m_notify) = NULL;
 		sac = mtod(m_notify, struct sctp_assoc_change *);
 		memset(sac, 0, notif_len);
 		sac->sac_type = SCTP_ASSOC_CHANGE;
 		sac->sac_flags = 0;
 		sac->sac_length = sizeof(struct sctp_assoc_change);
 		sac->sac_state = state;
 		sac->sac_error = error;
 		if (state == SCTP_CANT_STR_ASSOC) {
 			sac->sac_outbound_streams = 0;
 			sac->sac_inbound_streams = 0;
 		} else {
 			sac->sac_outbound_streams = stcb->asoc.streamoutcnt;
 			sac->sac_inbound_streams = stcb->asoc.streamincnt;
 		}
 		sac->sac_assoc_id = sctp_get_associd(stcb);
 		if (notif_len > sizeof(struct sctp_assoc_change)) {
 			if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
 				i = 0;
 				if (stcb->asoc.prsctp_supported == 1) {
 					sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_PR;
 				}
 				if (stcb->asoc.auth_supported == 1) {
 					sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_AUTH;
 				}
 				if (stcb->asoc.asconf_supported == 1) {
 					sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_ASCONF;
 				}
 				if (stcb->asoc.idata_supported == 1) {
 					sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_INTERLEAVING;
 				}
 				sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_MULTIBUF;
 				if (stcb->asoc.reconfig_supported == 1) {
 					sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_RE_CONFIG;
 				}
 				sac->sac_length += i;
 			} else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
 				memcpy(sac->sac_info, abort, abort_len);
 				sac->sac_length += abort_len;
 			}
 		}
 		SCTP_BUF_LEN(m_notify) = sac->sac_length;
 		control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
 		    0, 0, stcb->asoc.context, 0, 0, 0,
 		    m_notify);
 		if (control != NULL) {
 			control->length = SCTP_BUF_LEN(m_notify);
 			control->spec_flags = M_NOTIFICATION;
 			/* not that we need this */
 			control->tail_mbuf = m_notify;
 			sctp_add_to_readq(inp, stcb, control,
 			    &stcb->sctp_socket->so_rcv, 1,
 			    SCTP_READ_LOCK_HELD, so_locked);
 		} else {
 			sctp_m_freem(m_notify);
 		}
 	}
 	/*
 	 * For 1-to-1 style sockets, we send up and error when an ABORT
 	 * comes in.
 	 */
 set_error:
 	if (((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
 	    (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
 	    ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
 		SOCK_LOCK(stcb->sctp_socket);
 		if (from_peer) {
 			if (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) {
 				SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNREFUSED);
 				stcb->sctp_socket->so_error = ECONNREFUSED;
 			} else {
 				SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
 				stcb->sctp_socket->so_error = ECONNRESET;
 			}
 		} else {
 			if (timedout) {
 				SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ETIMEDOUT);
 				stcb->sctp_socket->so_error = ETIMEDOUT;
 			} else {
 				SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNABORTED);
 				stcb->sctp_socket->so_error = ECONNABORTED;
 			}
 		}
 		SOCK_UNLOCK(stcb->sctp_socket);
 	}
 	/* Wake ANY sleepers */
 	if (((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
 	    (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
 	    ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
 		socantrcvmore(stcb->sctp_socket);
 	}
 	sorwakeup(stcb->sctp_socket);
 	sowwakeup(stcb->sctp_socket);
 }
 
 static void
 sctp_notify_peer_addr_change(struct sctp_tcb *stcb, uint32_t state,
     struct sockaddr *sa, uint32_t error, int so_locked)
 {
 	struct mbuf *m_notify;
 	struct sctp_paddr_change *spc;
 	struct sctp_queued_to_read *control;
 
 	KASSERT(stcb != NULL, ("stcb == NULL"));
 	SCTP_TCB_LOCK_ASSERT(stcb);
 	SCTP_INP_READ_LOCK_ASSERT(stcb->sctp_ep);
 
 	if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPADDREVNT)) {
 		/* event not enabled */
 		return;
 	}
 
 	m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_paddr_change), 0, M_NOWAIT, 1, MT_DATA);
 	if (m_notify == NULL)
 		return;
 	SCTP_BUF_LEN(m_notify) = 0;
 	spc = mtod(m_notify, struct sctp_paddr_change *);
 	memset(spc, 0, sizeof(struct sctp_paddr_change));
 	spc->spc_type = SCTP_PEER_ADDR_CHANGE;
 	spc->spc_flags = 0;
 	spc->spc_length = sizeof(struct sctp_paddr_change);
 	switch (sa->sa_family) {
 #ifdef INET
 	case AF_INET:
 #ifdef INET6
 		if (sctp_is_feature_on(stcb->sctp_ep, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
 			in6_sin_2_v4mapsin6((struct sockaddr_in *)sa,
 			    (struct sockaddr_in6 *)&spc->spc_aaddr);
 		} else {
 			memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
 		}
 #else
 		memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
 #endif
 		break;
 #endif
 #ifdef INET6
 	case AF_INET6:
 		{
 			struct sockaddr_in6 *sin6;
 
 			memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in6));
 
 			sin6 = (struct sockaddr_in6 *)&spc->spc_aaddr;
 			if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) {
 				if (sin6->sin6_scope_id == 0) {
 					/* recover scope_id for user */
 					(void)sa6_recoverscope(sin6);
 				} else {
 					/* clear embedded scope_id for user */
 					in6_clearscope(&sin6->sin6_addr);
 				}
 			}
 			break;
 		}
 #endif
 	default:
 		/* TSNH */
 		break;
 	}
 	spc->spc_state = state;
 	spc->spc_error = error;
 	spc->spc_assoc_id = sctp_get_associd(stcb);
 
 	SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_paddr_change);
 	SCTP_BUF_NEXT(m_notify) = NULL;
 
 	/* append to socket */
 	control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
 	    0, 0, stcb->asoc.context, 0, 0, 0,
 	    m_notify);
 	if (control == NULL) {
 		/* no memory */
 		sctp_m_freem(m_notify);
 		return;
 	}
 	control->length = SCTP_BUF_LEN(m_notify);
 	control->spec_flags = M_NOTIFICATION;
 	/* not that we need this */
 	control->tail_mbuf = m_notify;
 	sctp_add_to_readq(stcb->sctp_ep, stcb, control,
 	    &stcb->sctp_socket->so_rcv, 1,
 	    SCTP_READ_LOCK_HELD, so_locked);
 }
 
 static void
 sctp_notify_send_failed(struct sctp_tcb *stcb, uint8_t sent, uint32_t error,
     struct sctp_tmit_chunk *chk, int so_locked)
 {
 	struct mbuf *m_notify;
 	struct sctp_send_failed *ssf;
 	struct sctp_send_failed_event *ssfe;
 	struct sctp_queued_to_read *control;
 	struct sctp_chunkhdr *chkhdr;
 	int notifhdr_len, chk_len, chkhdr_len, padding_len, payload_len;
 
 	KASSERT(stcb != NULL, ("stcb == NULL"));
 	SCTP_TCB_LOCK_ASSERT(stcb);
 	SCTP_INP_READ_LOCK_ASSERT(stcb->sctp_ep);
 
 	if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
 	    sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
 		/* event not enabled */
 		return;
 	}
 
 	if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
 		notifhdr_len = sizeof(struct sctp_send_failed_event);
 	} else {
 		notifhdr_len = sizeof(struct sctp_send_failed);
 	}
 	m_notify = sctp_get_mbuf_for_msg(notifhdr_len, 0, M_NOWAIT, 1, MT_DATA);
 	if (m_notify == NULL)
 		/* no space left */
 		return;
 	SCTP_BUF_LEN(m_notify) = notifhdr_len;
 	if (stcb->asoc.idata_supported) {
 		chkhdr_len = sizeof(struct sctp_idata_chunk);
 	} else {
 		chkhdr_len = sizeof(struct sctp_data_chunk);
 	}
 	/* Use some defaults in case we can't access the chunk header */
 	if (chk->send_size >= chkhdr_len) {
 		payload_len = chk->send_size - chkhdr_len;
 	} else {
 		payload_len = 0;
 	}
 	padding_len = 0;
 	if (chk->data != NULL) {
 		chkhdr = mtod(chk->data, struct sctp_chunkhdr *);
 		if (chkhdr != NULL) {
 			chk_len = ntohs(chkhdr->chunk_length);
 			if ((chk_len >= chkhdr_len) &&
 			    (chk->send_size >= chk_len) &&
 			    (chk->send_size - chk_len < 4)) {
 				padding_len = chk->send_size - chk_len;
 				payload_len = chk->send_size - chkhdr_len - padding_len;
 			}
 		}
 	}
 	if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
 		ssfe = mtod(m_notify, struct sctp_send_failed_event *);
 		memset(ssfe, 0, notifhdr_len);
 		ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
 		if (sent) {
 			ssfe->ssfe_flags = SCTP_DATA_SENT;
 		} else {
 			ssfe->ssfe_flags = SCTP_DATA_UNSENT;
 		}
 		ssfe->ssfe_length = (uint32_t)(notifhdr_len + payload_len);
 		ssfe->ssfe_error = error;
 		/* not exactly what the user sent in, but should be close :) */
 		ssfe->ssfe_info.snd_sid = chk->rec.data.sid;
 		ssfe->ssfe_info.snd_flags = chk->rec.data.rcv_flags;
 		ssfe->ssfe_info.snd_ppid = chk->rec.data.ppid;
 		ssfe->ssfe_info.snd_context = chk->rec.data.context;
 		ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
 		ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
 	} else {
 		ssf = mtod(m_notify, struct sctp_send_failed *);
 		memset(ssf, 0, notifhdr_len);
 		ssf->ssf_type = SCTP_SEND_FAILED;
 		if (sent) {
 			ssf->ssf_flags = SCTP_DATA_SENT;
 		} else {
 			ssf->ssf_flags = SCTP_DATA_UNSENT;
 		}
 		ssf->ssf_length = (uint32_t)(notifhdr_len + payload_len);
 		ssf->ssf_error = error;
 		/* not exactly what the user sent in, but should be close :) */
 		ssf->ssf_info.sinfo_stream = chk->rec.data.sid;
 		ssf->ssf_info.sinfo_ssn = (uint16_t)chk->rec.data.mid;
 		ssf->ssf_info.sinfo_flags = chk->rec.data.rcv_flags;
 		ssf->ssf_info.sinfo_ppid = chk->rec.data.ppid;
 		ssf->ssf_info.sinfo_context = chk->rec.data.context;
 		ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
 		ssf->ssf_assoc_id = sctp_get_associd(stcb);
 	}
 	if (chk->data != NULL) {
 		/* Trim off the sctp chunk header (it should be there) */
 		if (chk->send_size == chkhdr_len + payload_len + padding_len) {
 			m_adj(chk->data, chkhdr_len);
 			m_adj(chk->data, -padding_len);
 			sctp_mbuf_crush(chk->data);
 			chk->send_size -= (chkhdr_len + padding_len);
 		}
 	}
 	SCTP_BUF_NEXT(m_notify) = chk->data;
 	/* Steal off the mbuf */
 	chk->data = NULL;
 	/*
 	 * For this case, we check the actual socket buffer, since the assoc
 	 * is going away we don't want to overfill the socket buffer for a
 	 * non-reader
 	 */
 	if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
 		sctp_m_freem(m_notify);
 		return;
 	}
 	/* append to socket */
 	control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
 	    0, 0, stcb->asoc.context, 0, 0, 0,
 	    m_notify);
 	if (control == NULL) {
 		/* no memory */
 		sctp_m_freem(m_notify);
 		return;
 	}
 	control->length = SCTP_BUF_LEN(m_notify);
 	control->spec_flags = M_NOTIFICATION;
 	/* not that we need this */
 	control->tail_mbuf = m_notify;
 	sctp_add_to_readq(stcb->sctp_ep, stcb, control,
 	    &stcb->sctp_socket->so_rcv, 1,
 	    SCTP_READ_LOCK_HELD, so_locked);
 }
 
 static void
 sctp_notify_send_failed2(struct sctp_tcb *stcb, uint32_t error,
     struct sctp_stream_queue_pending *sp, int so_locked)
 {
 	struct mbuf *m_notify;
 	struct sctp_send_failed *ssf;
 	struct sctp_send_failed_event *ssfe;
 	struct sctp_queued_to_read *control;
 	int notifhdr_len;
 
 	KASSERT(stcb != NULL, ("stcb == NULL"));
 	SCTP_TCB_LOCK_ASSERT(stcb);
 	SCTP_INP_READ_LOCK_ASSERT(stcb->sctp_ep);
 
 	if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
 	    sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
 		/* event not enabled */
 		return;
 	}
 
 	if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
 		notifhdr_len = sizeof(struct sctp_send_failed_event);
 	} else {
 		notifhdr_len = sizeof(struct sctp_send_failed);
 	}
 	m_notify = sctp_get_mbuf_for_msg(notifhdr_len, 0, M_NOWAIT, 1, MT_DATA);
 	if (m_notify == NULL) {
 		/* no space left */
 		return;
 	}
 	SCTP_BUF_LEN(m_notify) = notifhdr_len;
 	if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
 		ssfe = mtod(m_notify, struct sctp_send_failed_event *);
 		memset(ssfe, 0, notifhdr_len);
 		ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
 		ssfe->ssfe_flags = SCTP_DATA_UNSENT;
 		ssfe->ssfe_length = (uint32_t)(notifhdr_len + sp->length);
 		ssfe->ssfe_error = error;
 		/* not exactly what the user sent in, but should be close :) */
 		ssfe->ssfe_info.snd_sid = sp->sid;
 		if (sp->some_taken) {
 			ssfe->ssfe_info.snd_flags = SCTP_DATA_LAST_FRAG;
 		} else {
 			ssfe->ssfe_info.snd_flags = SCTP_DATA_NOT_FRAG;
 		}
 		ssfe->ssfe_info.snd_ppid = sp->ppid;
 		ssfe->ssfe_info.snd_context = sp->context;
 		ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
 		ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
 	} else {
 		ssf = mtod(m_notify, struct sctp_send_failed *);
 		memset(ssf, 0, notifhdr_len);
 		ssf->ssf_type = SCTP_SEND_FAILED;
 		ssf->ssf_flags = SCTP_DATA_UNSENT;
 		ssf->ssf_length = (uint32_t)(notifhdr_len + sp->length);
 		ssf->ssf_error = error;
 		/* not exactly what the user sent in, but should be close :) */
 		ssf->ssf_info.sinfo_stream = sp->sid;
 		ssf->ssf_info.sinfo_ssn = 0;
 		if (sp->some_taken) {
 			ssf->ssf_info.sinfo_flags = SCTP_DATA_LAST_FRAG;
 		} else {
 			ssf->ssf_info.sinfo_flags = SCTP_DATA_NOT_FRAG;
 		}
 		ssf->ssf_info.sinfo_ppid = sp->ppid;
 		ssf->ssf_info.sinfo_context = sp->context;
 		ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
 		ssf->ssf_assoc_id = sctp_get_associd(stcb);
 	}
 	SCTP_BUF_NEXT(m_notify) = sp->data;
 
 	/* Steal off the mbuf */
 	sp->data = NULL;
 	/*
 	 * For this case, we check the actual socket buffer, since the assoc
 	 * is going away we don't want to overfill the socket buffer for a
 	 * non-reader
 	 */
 	if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
 		sctp_m_freem(m_notify);
 		return;
 	}
 	/* append to socket */
 	control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
 	    0, 0, stcb->asoc.context, 0, 0, 0,
 	    m_notify);
 	if (control == NULL) {
 		/* no memory */
 		sctp_m_freem(m_notify);
 		return;
 	}
 	control->length = SCTP_BUF_LEN(m_notify);
 	control->spec_flags = M_NOTIFICATION;
 	/* not that we need this */
 	control->tail_mbuf = m_notify;
 	sctp_add_to_readq(stcb->sctp_ep, stcb, control,
 	    &stcb->sctp_socket->so_rcv, 1,
 	    SCTP_READ_LOCK_HELD, so_locked);
 }
 
 static void
 sctp_notify_adaptation_layer(struct sctp_tcb *stcb, int so_locked)
 {
 	struct mbuf *m_notify;
 	struct sctp_adaptation_event *sai;
 	struct sctp_queued_to_read *control;
 
 	KASSERT(stcb != NULL, ("stcb == NULL"));
 	SCTP_TCB_LOCK_ASSERT(stcb);
 	SCTP_INP_READ_LOCK_ASSERT(stcb->sctp_ep);
 
 	if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ADAPTATIONEVNT)) {
 		/* event not enabled */
 		return;
 	}
 
 	m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_adaption_event), 0, M_NOWAIT, 1, MT_DATA);
 	if (m_notify == NULL)
 		/* no space left */
 		return;
 	SCTP_BUF_LEN(m_notify) = 0;
 	sai = mtod(m_notify, struct sctp_adaptation_event *);
 	memset(sai, 0, sizeof(struct sctp_adaptation_event));
 	sai->sai_type = SCTP_ADAPTATION_INDICATION;
 	sai->sai_flags = 0;
 	sai->sai_length = sizeof(struct sctp_adaptation_event);
 	sai->sai_adaptation_ind = stcb->asoc.peers_adaptation;
 	sai->sai_assoc_id = sctp_get_associd(stcb);
 
 	SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_adaptation_event);
 	SCTP_BUF_NEXT(m_notify) = NULL;
 
 	/* append to socket */
 	control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
 	    0, 0, stcb->asoc.context, 0, 0, 0,
 	    m_notify);
 	if (control == NULL) {
 		/* no memory */
 		sctp_m_freem(m_notify);
 		return;
 	}
 	control->length = SCTP_BUF_LEN(m_notify);
 	control->spec_flags = M_NOTIFICATION;
 	/* not that we need this */
 	control->tail_mbuf = m_notify;
 	sctp_add_to_readq(stcb->sctp_ep, stcb, control,
 	    &stcb->sctp_socket->so_rcv, 1,
 	    SCTP_READ_LOCK_HELD, so_locked);
 }
 
 static void
 sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, uint32_t error,
     struct sctp_queued_to_read *aborted_control,
     int so_locked)
 {
 	struct mbuf *m_notify;
 	struct sctp_pdapi_event *pdapi;
 	struct sctp_queued_to_read *control;
 	struct sockbuf *sb;
 
 	KASSERT(aborted_control != NULL, ("aborted_control is NULL"));
 	KASSERT(stcb != NULL, ("stcb == NULL"));
 	SCTP_TCB_LOCK_ASSERT(stcb);
 	SCTP_INP_READ_LOCK_ASSERT(stcb->sctp_ep);
 
 	if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_PDAPIEVNT)) {
 		/* event not enabled */
 		return;
 	}
 
 	m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_pdapi_event), 0, M_NOWAIT, 1, MT_DATA);
 	if (m_notify == NULL)
 		/* no space left */
 		return;
 	SCTP_BUF_LEN(m_notify) = 0;
 	pdapi = mtod(m_notify, struct sctp_pdapi_event *);
 	memset(pdapi, 0, sizeof(struct sctp_pdapi_event));
 	pdapi->pdapi_type = SCTP_PARTIAL_DELIVERY_EVENT;
 	pdapi->pdapi_flags = 0;
 	pdapi->pdapi_length = sizeof(struct sctp_pdapi_event);
 	pdapi->pdapi_indication = error;
 	pdapi->pdapi_stream = aborted_control->sinfo_stream;
 	pdapi->pdapi_seq = (uint16_t)aborted_control->mid;
 	pdapi->pdapi_assoc_id = sctp_get_associd(stcb);
 
 	SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_pdapi_event);
 	SCTP_BUF_NEXT(m_notify) = NULL;
 	control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
 	    0, 0, stcb->asoc.context, 0, 0, 0,
 	    m_notify);
 	if (control == NULL) {
 		/* no memory */
 		sctp_m_freem(m_notify);
 		return;
 	}
 	control->length = SCTP_BUF_LEN(m_notify);
 	control->spec_flags = M_NOTIFICATION;
 	/* not that we need this */
 	control->tail_mbuf = m_notify;
 	sb = &stcb->sctp_socket->so_rcv;
 	if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
 		sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m_notify));
 	}
 	sctp_sballoc(stcb, sb, m_notify);
 	if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
 		sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
 	}
 	control->end_added = 1;
 	TAILQ_INSERT_AFTER(&stcb->sctp_ep->read_queue, aborted_control, control, next);
 	if (stcb->sctp_ep && stcb->sctp_socket) {
 		/* This should always be the case */
 		sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket);
 	}
 }
 
 static void
 sctp_notify_shutdown_event(struct sctp_tcb *stcb, int so_locked)
 {
 	struct mbuf *m_notify;
 	struct sctp_shutdown_event *sse;
 	struct sctp_queued_to_read *control;
 
 	KASSERT(stcb != NULL, ("stcb == NULL"));
 	SCTP_TCB_LOCK_ASSERT(stcb);
 	SCTP_INP_READ_LOCK_ASSERT(stcb->sctp_ep);
 
 	/*
 	 * For TCP model AND UDP connected sockets we will send an error up
 	 * when an SHUTDOWN completes
 	 */
 	if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
 	    (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
 		/* mark socket closed for read/write and wakeup! */
 		socantsendmore(stcb->sctp_socket);
 	}
 
 	if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) {
 		/* event not enabled */
 		return;
 	}
 
 	m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_shutdown_event), 0, M_NOWAIT, 1, MT_DATA);
 	if (m_notify == NULL)
 		/* no space left */
 		return;
 	sse = mtod(m_notify, struct sctp_shutdown_event *);
 	memset(sse, 0, sizeof(struct sctp_shutdown_event));
 	sse->sse_type = SCTP_SHUTDOWN_EVENT;
 	sse->sse_flags = 0;
 	sse->sse_length = sizeof(struct sctp_shutdown_event);
 	sse->sse_assoc_id = sctp_get_associd(stcb);
 
 	SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_shutdown_event);
 	SCTP_BUF_NEXT(m_notify) = NULL;
 
 	/* append to socket */
 	control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
 	    0, 0, stcb->asoc.context, 0, 0, 0,
 	    m_notify);
 	if (control == NULL) {
 		/* no memory */
 		sctp_m_freem(m_notify);
 		return;
 	}
 	control->length = SCTP_BUF_LEN(m_notify);
 	control->spec_flags = M_NOTIFICATION;
 	/* not that we need this */
 	control->tail_mbuf = m_notify;
 	sctp_add_to_readq(stcb->sctp_ep, stcb, control,
 	    &stcb->sctp_socket->so_rcv, 1,
 	    SCTP_READ_LOCK_HELD, so_locked);
 }
 
 static void
 sctp_notify_sender_dry_event(struct sctp_tcb *stcb, int so_locked)
 {
 	struct mbuf *m_notify;
 	struct sctp_sender_dry_event *event;
 	struct sctp_queued_to_read *control;
 
 	KASSERT(stcb != NULL, ("stcb == NULL"));
 	SCTP_TCB_LOCK_ASSERT(stcb);
 	SCTP_INP_READ_LOCK_ASSERT(stcb->sctp_ep);
 
 	if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DRYEVNT)) {
 		/* event not enabled */
 		return;
 	}
 
 	m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_sender_dry_event), 0, M_NOWAIT, 1, MT_DATA);
 	if (m_notify == NULL) {
 		/* no space left */
 		return;
 	}
 	SCTP_BUF_LEN(m_notify) = 0;
 	event = mtod(m_notify, struct sctp_sender_dry_event *);
 	memset(event, 0, sizeof(struct sctp_sender_dry_event));
 	event->sender_dry_type = SCTP_SENDER_DRY_EVENT;
 	event->sender_dry_flags = 0;
 	event->sender_dry_length = sizeof(struct sctp_sender_dry_event);
 	event->sender_dry_assoc_id = sctp_get_associd(stcb);
 
 	SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_sender_dry_event);
 	SCTP_BUF_NEXT(m_notify) = NULL;
 
 	/* append to socket */
 	control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
 	    0, 0, stcb->asoc.context, 0, 0, 0,
 	    m_notify);
 	if (control == NULL) {
 		/* no memory */
 		sctp_m_freem(m_notify);
 		return;
 	}
 	control->length = SCTP_BUF_LEN(m_notify);
 	control->spec_flags = M_NOTIFICATION;
 	/* not that we need this */
 	control->tail_mbuf = m_notify;
 	sctp_add_to_readq(stcb->sctp_ep, stcb, control,
 	    &stcb->sctp_socket->so_rcv, 1,
 	    SCTP_READ_LOCK_HELD, so_locked);
 }
 
 static void
 sctp_notify_stream_reset_add(struct sctp_tcb *stcb, int flag, int so_locked)
 {
 	struct mbuf *m_notify;
 	struct sctp_queued_to_read *control;
 	struct sctp_stream_change_event *stradd;
 
 	KASSERT(stcb != NULL, ("stcb == NULL"));
 	SCTP_TCB_LOCK_ASSERT(stcb);
 	SCTP_INP_READ_LOCK_ASSERT(stcb->sctp_ep);
 
 	if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_CHANGEEVNT)) {
 		/* event not enabled */
 		return;
 	}
 
 	if ((stcb->asoc.peer_req_out) && flag) {
 		/* Peer made the request, don't tell the local user */
 		stcb->asoc.peer_req_out = 0;
 		return;
 	}
 	stcb->asoc.peer_req_out = 0;
 	m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_stream_change_event), 0, M_NOWAIT, 1, MT_DATA);
 	if (m_notify == NULL)
 		/* no space left */
 		return;
 	SCTP_BUF_LEN(m_notify) = 0;
 	stradd = mtod(m_notify, struct sctp_stream_change_event *);
 	memset(stradd, 0, sizeof(struct sctp_stream_change_event));
 	stradd->strchange_type = SCTP_STREAM_CHANGE_EVENT;
 	stradd->strchange_flags = flag;
 	stradd->strchange_length = sizeof(struct sctp_stream_change_event);
 	stradd->strchange_assoc_id = sctp_get_associd(stcb);
 	stradd->strchange_instrms = stcb->asoc.streamincnt;
 	stradd->strchange_outstrms = stcb->asoc.streamoutcnt;
 	SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_stream_change_event);
 	SCTP_BUF_NEXT(m_notify) = NULL;
 	if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
 		/* no space */
 		sctp_m_freem(m_notify);
 		return;
 	}
 	/* append to socket */
 	control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
 	    0, 0, stcb->asoc.context, 0, 0, 0,
 	    m_notify);
 	if (control == NULL) {
 		/* no memory */
 		sctp_m_freem(m_notify);
 		return;
 	}
 	control->length = SCTP_BUF_LEN(m_notify);
 	control->spec_flags = M_NOTIFICATION;
 	/* not that we need this */
 	control->tail_mbuf = m_notify;
 	sctp_add_to_readq(stcb->sctp_ep, stcb, control,
 	    &stcb->sctp_socket->so_rcv, 1,
 	    SCTP_READ_LOCK_HELD, so_locked);
 }
 
 static void
 sctp_notify_stream_reset_tsn(struct sctp_tcb *stcb, int flag, int so_locked)
 {
 	struct mbuf *m_notify;
 	struct sctp_queued_to_read *control;
 	struct sctp_assoc_reset_event *strasoc;
 
 	KASSERT(stcb != NULL, ("stcb == NULL"));
 	SCTP_TCB_LOCK_ASSERT(stcb);
 	SCTP_INP_READ_LOCK_ASSERT(stcb->sctp_ep);
 
 	if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ASSOC_RESETEVNT)) {
 		/* event not enabled */
 		return;
 	}
 
 	m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_assoc_reset_event), 0, M_NOWAIT, 1, MT_DATA);
 	if (m_notify == NULL)
 		/* no space left */
 		return;
 	SCTP_BUF_LEN(m_notify) = 0;
 	strasoc = mtod(m_notify, struct sctp_assoc_reset_event *);
 	memset(strasoc, 0, sizeof(struct sctp_assoc_reset_event));
 	strasoc->assocreset_type = SCTP_ASSOC_RESET_EVENT;
 	strasoc->assocreset_flags = flag;
 	strasoc->assocreset_length = sizeof(struct sctp_assoc_reset_event);
 	strasoc->assocreset_assoc_id = sctp_get_associd(stcb);
 	strasoc->assocreset_local_tsn = stcb->asoc.sending_seq;
 	strasoc->assocreset_remote_tsn = stcb->asoc.mapping_array_base_tsn + 1;
 	SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_assoc_reset_event);
 	SCTP_BUF_NEXT(m_notify) = NULL;
 	if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
 		/* no space */
 		sctp_m_freem(m_notify);
 		return;
 	}
 	/* append to socket */
 	control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
 	    0, 0, stcb->asoc.context, 0, 0, 0,
 	    m_notify);
 	if (control == NULL) {
 		/* no memory */
 		sctp_m_freem(m_notify);
 		return;
 	}
 	control->length = SCTP_BUF_LEN(m_notify);
 	control->spec_flags = M_NOTIFICATION;
 	/* not that we need this */
 	control->tail_mbuf = m_notify;
 	sctp_add_to_readq(stcb->sctp_ep, stcb, control,
 	    &stcb->sctp_socket->so_rcv, 1,
 	    SCTP_READ_LOCK_HELD, so_locked);
 }
 
 static void
 sctp_notify_stream_reset(struct sctp_tcb *stcb,
     int number_entries, uint16_t *list, int flag, int so_locked)
 {
 	struct mbuf *m_notify;
 	struct sctp_queued_to_read *control;
 	struct sctp_stream_reset_event *strreset;
 	int len;
 
 	KASSERT(stcb != NULL, ("stcb == NULL"));
 	SCTP_TCB_LOCK_ASSERT(stcb);
 	SCTP_INP_READ_LOCK_ASSERT(stcb->sctp_ep);
 
 	if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_RESETEVNT)) {
 		/* event not enabled */
 		return;
 	}
 
 	m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA);
 	if (m_notify == NULL)
 		/* no space left */
 		return;
 	SCTP_BUF_LEN(m_notify) = 0;
 	len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t));
 	if (len > M_TRAILINGSPACE(m_notify)) {
 		/* never enough room */
 		sctp_m_freem(m_notify);
 		return;
 	}
 	strreset = mtod(m_notify, struct sctp_stream_reset_event *);
 	memset(strreset, 0, len);
 	strreset->strreset_type = SCTP_STREAM_RESET_EVENT;
 	strreset->strreset_flags = flag;
 	strreset->strreset_length = len;
 	strreset->strreset_assoc_id = sctp_get_associd(stcb);
 	if (number_entries) {
 		int i;
 
 		for (i = 0; i < number_entries; i++) {
 			strreset->strreset_stream_list[i] = ntohs(list[i]);
 		}
 	}
 	SCTP_BUF_LEN(m_notify) = len;
 	SCTP_BUF_NEXT(m_notify) = NULL;
 	if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
 		/* no space */
 		sctp_m_freem(m_notify);
 		return;
 	}
 	/* append to socket */
 	control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
 	    0, 0, stcb->asoc.context, 0, 0, 0,
 	    m_notify);
 	if (control == NULL) {
 		/* no memory */
 		sctp_m_freem(m_notify);
 		return;
 	}
 	control->length = SCTP_BUF_LEN(m_notify);
 	control->spec_flags = M_NOTIFICATION;
 	/* not that we need this */
 	control->tail_mbuf = m_notify;
 	sctp_add_to_readq(stcb->sctp_ep, stcb, control,
 	    &stcb->sctp_socket->so_rcv, 1,
 	    SCTP_READ_LOCK_HELD, so_locked);
 }
 
 static void
 sctp_notify_remote_error(struct sctp_tcb *stcb, uint16_t error,
     struct sctp_error_chunk *chunk, int so_locked)
 {
 	struct mbuf *m_notify;
 	struct sctp_remote_error *sre;
 	struct sctp_queued_to_read *control;
 	unsigned int notif_len;
 	uint16_t chunk_len;
 
 	KASSERT(stcb != NULL, ("stcb == NULL"));
 	SCTP_TCB_LOCK_ASSERT(stcb);
 	SCTP_INP_READ_LOCK_ASSERT(stcb->sctp_ep);
 
 	if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPEERERR)) {
 		return;
 	}
 
 	if (chunk != NULL) {
 		chunk_len = ntohs(chunk->ch.chunk_length);
 		/*
 		 * Only SCTP_CHUNK_BUFFER_SIZE are guaranteed to be
 		 * contiguous.
 		 */
 		if (chunk_len > SCTP_CHUNK_BUFFER_SIZE) {
 			chunk_len = SCTP_CHUNK_BUFFER_SIZE;
 		}
 	} else {
 		chunk_len = 0;
 	}
 	notif_len = (unsigned int)(sizeof(struct sctp_remote_error) + chunk_len);
 	m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
 	if (m_notify == NULL) {
 		/* Retry with smaller value. */
 		notif_len = (unsigned int)sizeof(struct sctp_remote_error);
 		m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
 		if (m_notify == NULL) {
 			return;
 		}
 	}
 	SCTP_BUF_NEXT(m_notify) = NULL;
 	sre = mtod(m_notify, struct sctp_remote_error *);
 	memset(sre, 0, notif_len);
 	sre->sre_type = SCTP_REMOTE_ERROR;
 	sre->sre_flags = 0;
 	sre->sre_length = sizeof(struct sctp_remote_error);
 	sre->sre_error = error;
 	sre->sre_assoc_id = sctp_get_associd(stcb);
 	if (notif_len > sizeof(struct sctp_remote_error)) {
 		memcpy(sre->sre_data, chunk, chunk_len);
 		sre->sre_length += chunk_len;
 	}
 	SCTP_BUF_LEN(m_notify) = sre->sre_length;
 	control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
 	    0, 0, stcb->asoc.context, 0, 0, 0,
 	    m_notify);
 	if (control != NULL) {
 		control->length = SCTP_BUF_LEN(m_notify);
 		control->spec_flags = M_NOTIFICATION;
 		/* not that we need this */
 		control->tail_mbuf = m_notify;
 		sctp_add_to_readq(stcb->sctp_ep, stcb, control,
 		    &stcb->sctp_socket->so_rcv, 1,
 		    SCTP_READ_LOCK_HELD, so_locked);
 	} else {
 		sctp_m_freem(m_notify);
 	}
 }
 
 void
 sctp_ulp_notify(uint32_t notification, struct sctp_tcb *stcb,
     uint32_t error, void *data, int so_locked)
 {
 	struct sctp_inpcb *inp;
 	struct sctp_nets *net;
 
 	KASSERT(stcb != NULL, ("stcb == NULL"));
 	SCTP_TCB_LOCK_ASSERT(stcb);
 
 	inp = stcb->sctp_ep;
 	if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
 		return;
 	}
 	if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) ||
 	    (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) {
 		if ((notification == SCTP_NOTIFY_INTERFACE_DOWN) ||
 		    (notification == SCTP_NOTIFY_INTERFACE_UP) ||
 		    (notification == SCTP_NOTIFY_INTERFACE_CONFIRMED)) {
 			/* Don't report these in front states */
 			return;
 		}
 	}
 	if (notification != SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION) {
 		SCTP_INP_READ_LOCK(inp);
 	}
 	SCTP_INP_READ_LOCK_ASSERT(inp);
 
 	if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
 	    (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
 	    (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ)) {
 		SCTP_INP_READ_UNLOCK(inp);
 		return;
 	}
 
 	switch (notification) {
 	case SCTP_NOTIFY_ASSOC_UP:
 		if (stcb->asoc.assoc_up_sent == 0) {
 			sctp_notify_assoc_change(SCTP_COMM_UP, stcb, error, NULL, false, false, so_locked);
 			stcb->asoc.assoc_up_sent = 1;
 		}
 		if (stcb->asoc.adaptation_needed && (stcb->asoc.adaptation_sent == 0)) {
 			sctp_notify_adaptation_layer(stcb, so_locked);
 		}
 		if (stcb->asoc.auth_supported == 0) {
 			sctp_notify_authentication(stcb, SCTP_AUTH_NO_AUTH, 0, so_locked);
 		}
 		break;
 	case SCTP_NOTIFY_ASSOC_DOWN:
 		sctp_notify_assoc_change(SCTP_SHUTDOWN_COMP, stcb, error, NULL, false, false, so_locked);
 		break;
 	case SCTP_NOTIFY_INTERFACE_DOWN:
 		net = (struct sctp_nets *)data;
 		sctp_notify_peer_addr_change(stcb, SCTP_ADDR_UNREACHABLE,
 		    &net->ro._l_addr.sa, error, so_locked);
 		break;
 	case SCTP_NOTIFY_INTERFACE_UP:
 		net = (struct sctp_nets *)data;
 		sctp_notify_peer_addr_change(stcb, SCTP_ADDR_AVAILABLE,
 		    &net->ro._l_addr.sa, error, so_locked);
 		break;
 	case SCTP_NOTIFY_INTERFACE_CONFIRMED:
 		net = (struct sctp_nets *)data;
 		sctp_notify_peer_addr_change(stcb, SCTP_ADDR_CONFIRMED,
 		    &net->ro._l_addr.sa, error, so_locked);
 		break;
 	case SCTP_NOTIFY_SPECIAL_SP_FAIL:
 		sctp_notify_send_failed2(stcb, error,
 		    (struct sctp_stream_queue_pending *)data, so_locked);
 		break;
 	case SCTP_NOTIFY_SENT_DG_FAIL:
 		sctp_notify_send_failed(stcb, 1, error,
 		    (struct sctp_tmit_chunk *)data, so_locked);
 		break;
 	case SCTP_NOTIFY_UNSENT_DG_FAIL:
 		sctp_notify_send_failed(stcb, 0, error,
 		    (struct sctp_tmit_chunk *)data, so_locked);
 		break;
 	case SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION:
 		sctp_notify_partial_delivery_indication(stcb, error,
 		    (struct sctp_queued_to_read *)data,
 		    so_locked);
 		break;
 	case SCTP_NOTIFY_ASSOC_LOC_ABORTED:
 		if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) ||
 		    (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) {
 			sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, false, false, so_locked);
 		} else {
 			sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, false, false, so_locked);
 		}
 		break;
 	case SCTP_NOTIFY_ASSOC_REM_ABORTED:
 		if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) ||
 		    (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) {
 			sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, true, false, so_locked);
 		} else {
 			sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, true, false, so_locked);
 		}
 		break;
 	case SCTP_NOTIFY_ASSOC_TIMEDOUT:
 		if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) ||
 		    (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) {
 			sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, false, true, so_locked);
 		} else {
 			sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, false, true, so_locked);
 		}
 		break;
 	case SCTP_NOTIFY_ASSOC_RESTART:
 		sctp_notify_assoc_change(SCTP_RESTART, stcb, error, NULL, false, false, so_locked);
 		if (stcb->asoc.auth_supported == 0) {
 			sctp_notify_authentication(stcb, SCTP_AUTH_NO_AUTH, 0, so_locked);
 		}
 		break;
 	case SCTP_NOTIFY_STR_RESET_SEND:
 		sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), SCTP_STREAM_RESET_OUTGOING_SSN, so_locked);
 		break;
 	case SCTP_NOTIFY_STR_RESET_RECV:
 		sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), SCTP_STREAM_RESET_INCOMING, so_locked);
 		break;
 	case SCTP_NOTIFY_STR_RESET_FAILED_OUT:
 		sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
 		    (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_FAILED), so_locked);
 		break;
 	case SCTP_NOTIFY_STR_RESET_DENIED_OUT:
 		sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
 		    (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_DENIED), so_locked);
 		break;
 	case SCTP_NOTIFY_STR_RESET_FAILED_IN:
 		sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
 		    (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_FAILED), so_locked);
 		break;
 	case SCTP_NOTIFY_STR_RESET_DENIED_IN:
 		sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
 		    (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_DENIED), so_locked);
 		break;
 	case SCTP_NOTIFY_STR_RESET_ADD:
 		sctp_notify_stream_reset_add(stcb, error, so_locked);
 		break;
 	case SCTP_NOTIFY_STR_RESET_TSN:
 		sctp_notify_stream_reset_tsn(stcb, error, so_locked);
 		break;
 	case SCTP_NOTIFY_ASCONF_ADD_IP:
 		sctp_notify_peer_addr_change(stcb, SCTP_ADDR_ADDED, data,
 		    error, so_locked);
 		break;
 	case SCTP_NOTIFY_ASCONF_DELETE_IP:
 		sctp_notify_peer_addr_change(stcb, SCTP_ADDR_REMOVED, data,
 		    error, so_locked);
 		break;
 	case SCTP_NOTIFY_ASCONF_SET_PRIMARY:
 		sctp_notify_peer_addr_change(stcb, SCTP_ADDR_MADE_PRIM, data,
 		    error, so_locked);
 		break;
 	case SCTP_NOTIFY_PEER_SHUTDOWN:
 		sctp_notify_shutdown_event(stcb, so_locked);
 		break;
 	case SCTP_NOTIFY_AUTH_NEW_KEY:
 		sctp_notify_authentication(stcb, SCTP_AUTH_NEW_KEY,
 		    *(uint16_t *)data, so_locked);
 		break;
 	case SCTP_NOTIFY_AUTH_FREE_KEY:
 		sctp_notify_authentication(stcb, SCTP_AUTH_FREE_KEY,
 		    *(uint16_t *)data, so_locked);
 		break;
 	case SCTP_NOTIFY_NO_PEER_AUTH:
 		sctp_notify_authentication(stcb, SCTP_AUTH_NO_AUTH,
 		    0, so_locked);
 		break;
 	case SCTP_NOTIFY_SENDER_DRY:
 		sctp_notify_sender_dry_event(stcb, so_locked);
 		break;
 	case SCTP_NOTIFY_REMOTE_ERROR:
 		sctp_notify_remote_error(stcb, error, data, so_locked);
 		break;
 	default:
 		SCTPDBG(SCTP_DEBUG_UTIL1, "%s: unknown notification %xh (%u)\n",
 		    __func__, notification, notification);
 		break;
 	}
 	if (notification != SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION) {
 		SCTP_INP_READ_UNLOCK(inp);
 	}
 }
 
 void
 sctp_report_all_outbound(struct sctp_tcb *stcb, uint16_t error, int so_locked)
 {
 	struct sctp_association *asoc;
 	struct sctp_stream_out *outs;
 	struct sctp_tmit_chunk *chk, *nchk;
 	struct sctp_stream_queue_pending *sp, *nsp;
 	int i;
 
 	if (stcb == NULL) {
 		return;
 	}
 	asoc = &stcb->asoc;
 	if (asoc->state & SCTP_STATE_ABOUT_TO_BE_FREED) {
 		/* already being freed */
 		return;
 	}
 	if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
 	    (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
 	    (asoc->state & SCTP_STATE_CLOSED_SOCKET)) {
 		return;
 	}
 	/* now through all the gunk freeing chunks */
 	/* sent queue SHOULD be empty */
 	TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
 		TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
 		asoc->sent_queue_cnt--;
 		if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
 			if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
 				asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
 #ifdef INVARIANTS
 			} else {
 				panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
 #endif
 			}
 		}
 		if (chk->data != NULL) {
 			sctp_free_bufspace(stcb, asoc, chk, 1);
 			sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
 			    error, chk, so_locked);
 			if (chk->data) {
 				sctp_m_freem(chk->data);
 				chk->data = NULL;
 			}
 		}
 		sctp_free_a_chunk(stcb, chk, so_locked);
 		/* sa_ignore FREED_MEMORY */
 	}
 	/* pending send queue SHOULD be empty */
 	TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
 		TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
 		asoc->send_queue_cnt--;
 		if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
 			asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
 #ifdef INVARIANTS
 		} else {
 			panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
 #endif
 		}
 		if (chk->data != NULL) {
 			sctp_free_bufspace(stcb, asoc, chk, 1);
 			sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
 			    error, chk, so_locked);
 			if (chk->data) {
 				sctp_m_freem(chk->data);
 				chk->data = NULL;
 			}
 		}
 		sctp_free_a_chunk(stcb, chk, so_locked);
 		/* sa_ignore FREED_MEMORY */
 	}
 	for (i = 0; i < asoc->streamoutcnt; i++) {
 		/* For each stream */
 		outs = &asoc->strmout[i];
 		/* clean up any sends there */
 		TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
 			atomic_subtract_int(&asoc->stream_queue_cnt, 1);
 			TAILQ_REMOVE(&outs->outqueue, sp, next);
 			stcb->asoc.ss_functions.sctp_ss_remove_from_stream(stcb, asoc, outs, sp);
 			sctp_free_spbufspace(stcb, asoc, sp);
 			if (sp->data) {
 				sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
 				    error, (void *)sp, so_locked);
 				if (sp->data) {
 					sctp_m_freem(sp->data);
 					sp->data = NULL;
 					sp->tail_mbuf = NULL;
 					sp->length = 0;
 				}
 			}
 			if (sp->net) {
 				sctp_free_remote_addr(sp->net);
 				sp->net = NULL;
 			}
 			/* Free the chunk */
 			sctp_free_a_strmoq(stcb, sp, so_locked);
 			/* sa_ignore FREED_MEMORY */
 		}
 	}
 }
 
 void
 sctp_abort_notification(struct sctp_tcb *stcb, bool from_peer, bool timeout,
     uint16_t error, struct sctp_abort_chunk *abort,
     int so_locked)
 {
 	if (stcb == NULL) {
 		return;
 	}
 	SCTP_TCB_LOCK_ASSERT(stcb);
 
 	if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
 	    ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
 	    (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
 		sctp_pcb_add_flags(stcb->sctp_ep, SCTP_PCB_FLAGS_WAS_ABORTED);
 	}
 	if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
 	    (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
 	    (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
 		return;
 	}
 	SCTP_ADD_SUBSTATE(stcb, SCTP_STATE_WAS_ABORTED);
 	/* Tell them we lost the asoc */
 	sctp_report_all_outbound(stcb, error, so_locked);
 	if (from_peer) {
 		sctp_ulp_notify(SCTP_NOTIFY_ASSOC_REM_ABORTED, stcb, error, abort, so_locked);
 	} else {
 		if (timeout) {
 			sctp_ulp_notify(SCTP_NOTIFY_ASSOC_TIMEDOUT, stcb, error, abort, so_locked);
 		} else {
 			sctp_ulp_notify(SCTP_NOTIFY_ASSOC_LOC_ABORTED, stcb, error, abort, so_locked);
 		}
 	}
 }
 
 void
 sctp_abort_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
     struct mbuf *m, int iphlen,
     struct sockaddr *src, struct sockaddr *dst,
     struct sctphdr *sh, struct mbuf *op_err,
     uint8_t mflowtype, uint32_t mflowid,
     uint32_t vrf_id, uint16_t port)
 {
 	struct sctp_gen_error_cause *cause;
 	uint32_t vtag;
 	uint16_t cause_code;
 
 	if (stcb != NULL) {
 		vtag = stcb->asoc.peer_vtag;
 		vrf_id = stcb->asoc.vrf_id;
 		if (op_err != NULL) {
 			/* Read the cause code from the error cause. */
 			cause = mtod(op_err, struct sctp_gen_error_cause *);
 			cause_code = ntohs(cause->code);
 		} else {
 			cause_code = 0;
 		}
 	} else {
 		vtag = 0;
 	}
 	sctp_send_abort(m, iphlen, src, dst, sh, vtag, op_err,
 	    mflowtype, mflowid, inp->fibnum,
 	    vrf_id, port);
 	if (stcb != NULL) {
 		/* We have a TCB to abort, send notification too */
 		sctp_abort_notification(stcb, false, false, cause_code, NULL, SCTP_SO_NOT_LOCKED);
 		/* Ok, now lets free it */
 		SCTP_STAT_INCR_COUNTER32(sctps_aborted);
 		if ((SCTP_GET_STATE(stcb) == SCTP_STATE_OPEN) ||
 		    (SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
 			SCTP_STAT_DECR_GAUGE32(sctps_currestab);
 		}
 		(void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
 		    SCTP_FROM_SCTPUTIL + SCTP_LOC_4);
 	}
 }
 #ifdef SCTP_ASOCLOG_OF_TSNS
 void
 sctp_print_out_track_log(struct sctp_tcb *stcb)
 {
 #ifdef NOSIY_PRINTS
 	int i;
 
 	SCTP_PRINTF("Last ep reason:%x\n", stcb->sctp_ep->last_abort_code);
 	SCTP_PRINTF("IN bound TSN log-aaa\n");
 	if ((stcb->asoc.tsn_in_at == 0) && (stcb->asoc.tsn_in_wrapped == 0)) {
 		SCTP_PRINTF("None rcvd\n");
 		goto none_in;
 	}
 	if (stcb->asoc.tsn_in_wrapped) {
 		for (i = stcb->asoc.tsn_in_at; i < SCTP_TSN_LOG_SIZE; i++) {
 			SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
 			    stcb->asoc.in_tsnlog[i].tsn,
 			    stcb->asoc.in_tsnlog[i].strm,
 			    stcb->asoc.in_tsnlog[i].seq,
 			    stcb->asoc.in_tsnlog[i].flgs,
 			    stcb->asoc.in_tsnlog[i].sz);
 		}
 	}
 	if (stcb->asoc.tsn_in_at) {
 		for (i = 0; i < stcb->asoc.tsn_in_at; i++) {
 			SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
 			    stcb->asoc.in_tsnlog[i].tsn,
 			    stcb->asoc.in_tsnlog[i].strm,
 			    stcb->asoc.in_tsnlog[i].seq,
 			    stcb->asoc.in_tsnlog[i].flgs,
 			    stcb->asoc.in_tsnlog[i].sz);
 		}
 	}
 none_in:
 	SCTP_PRINTF("OUT bound TSN log-aaa\n");
 	if ((stcb->asoc.tsn_out_at == 0) &&
 	    (stcb->asoc.tsn_out_wrapped == 0)) {
 		SCTP_PRINTF("None sent\n");
 	}
 	if (stcb->asoc.tsn_out_wrapped) {
 		for (i = stcb->asoc.tsn_out_at; i < SCTP_TSN_LOG_SIZE; i++) {
 			SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
 			    stcb->asoc.out_tsnlog[i].tsn,
 			    stcb->asoc.out_tsnlog[i].strm,
 			    stcb->asoc.out_tsnlog[i].seq,
 			    stcb->asoc.out_tsnlog[i].flgs,
 			    stcb->asoc.out_tsnlog[i].sz);
 		}
 	}
 	if (stcb->asoc.tsn_out_at) {
 		for (i = 0; i < stcb->asoc.tsn_out_at; i++) {
 			SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
 			    stcb->asoc.out_tsnlog[i].tsn,
 			    stcb->asoc.out_tsnlog[i].strm,
 			    stcb->asoc.out_tsnlog[i].seq,
 			    stcb->asoc.out_tsnlog[i].flgs,
 			    stcb->asoc.out_tsnlog[i].sz);
 		}
 	}
 #endif
 }
 #endif
 
 void
 sctp_abort_an_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
     struct mbuf *op_err, bool timedout, int so_locked)
 {
 	struct sctp_gen_error_cause *cause;
 	uint16_t cause_code;
 
 	if (stcb == NULL) {
 		/* Got to have a TCB */
 		if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
 			if (LIST_EMPTY(&inp->sctp_asoc_list)) {
 				sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
 				    SCTP_CALLED_DIRECTLY_NOCMPSET);
 			}
 		}
 		return;
 	}
 	if (op_err != NULL) {
 		/* Read the cause code from the error cause. */
 		cause = mtod(op_err, struct sctp_gen_error_cause *);
 		cause_code = ntohs(cause->code);
 	} else {
 		cause_code = 0;
 	}
 	/* notify the peer */
 	sctp_send_abort_tcb(stcb, op_err, so_locked);
 	SCTP_STAT_INCR_COUNTER32(sctps_aborted);
 	if ((SCTP_GET_STATE(stcb) == SCTP_STATE_OPEN) ||
 	    (SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
 		SCTP_STAT_DECR_GAUGE32(sctps_currestab);
 	}
 	/* notify the ulp */
 	if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
 		sctp_abort_notification(stcb, false, timedout, cause_code, NULL, so_locked);
 	}
 	/* now free the asoc */
 #ifdef SCTP_ASOCLOG_OF_TSNS
 	sctp_print_out_track_log(stcb);
 #endif
 	(void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
 	    SCTP_FROM_SCTPUTIL + SCTP_LOC_5);
 }
 
 void
 sctp_handle_ootb(struct mbuf *m, int iphlen, int offset,
     struct sockaddr *src, struct sockaddr *dst,
     struct sctphdr *sh, struct sctp_inpcb *inp,
     struct mbuf *cause,
     uint8_t mflowtype, uint32_t mflowid, uint16_t fibnum,
     uint32_t vrf_id, uint16_t port)
 {
 	struct sctp_chunkhdr *ch, chunk_buf;
 	unsigned int chk_length;
 	int contains_init_chunk;
 
 	SCTP_STAT_INCR_COUNTER32(sctps_outoftheblue);
 	/* Generate a TO address for future reference */
 	if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
 		if (LIST_EMPTY(&inp->sctp_asoc_list)) {
 			sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
 			    SCTP_CALLED_DIRECTLY_NOCMPSET);
 		}
 	}
 	contains_init_chunk = 0;
 	ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
 	    sizeof(*ch), (uint8_t *)&chunk_buf);
 	while (ch != NULL) {
 		chk_length = ntohs(ch->chunk_length);
 		if (chk_length < sizeof(*ch)) {
 			/* break to abort land */
 			break;
 		}
 		switch (ch->chunk_type) {
 		case SCTP_INIT:
 			contains_init_chunk = 1;
 			break;
 		case SCTP_PACKET_DROPPED:
 			/* we don't respond to pkt-dropped */
 			return;
 		case SCTP_ABORT_ASSOCIATION:
 			/* we don't respond with an ABORT to an ABORT */
 			return;
 		case SCTP_SHUTDOWN_COMPLETE:
 			/*
 			 * we ignore it since we are not waiting for it and
 			 * peer is gone
 			 */
 			return;
 		case SCTP_SHUTDOWN_ACK:
 			sctp_send_shutdown_complete2(src, dst, sh,
 			    mflowtype, mflowid, fibnum,
 			    vrf_id, port);
 			return;
 		default:
 			break;
 		}
 		offset += SCTP_SIZE32(chk_length);
 		ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
 		    sizeof(*ch), (uint8_t *)&chunk_buf);
 	}
 	if ((SCTP_BASE_SYSCTL(sctp_blackhole) == 0) ||
 	    ((SCTP_BASE_SYSCTL(sctp_blackhole) == 1) &&
 	    (contains_init_chunk == 0))) {
 		sctp_send_abort(m, iphlen, src, dst, sh, 0, cause,
 		    mflowtype, mflowid, fibnum,
 		    vrf_id, port);
 	}
 }
 
 /*
  * check the inbound datagram to make sure there is not an abort inside it,
  * if there is return 1, else return 0.
  */
 int
 sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, uint32_t *vtag)
 {
 	struct sctp_chunkhdr *ch;
 	struct sctp_init_chunk *init_chk, chunk_buf;
 	int offset;
 	unsigned int chk_length;
 
 	offset = iphlen + sizeof(struct sctphdr);
 	ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch),
 	    (uint8_t *)&chunk_buf);
 	while (ch != NULL) {
 		chk_length = ntohs(ch->chunk_length);
 		if (chk_length < sizeof(*ch)) {
 			/* packet is probably corrupt */
 			break;
 		}
 		/* we seem to be ok, is it an abort? */
 		if (ch->chunk_type == SCTP_ABORT_ASSOCIATION) {
 			/* yep, tell them */
 			return (1);
 		}
 		if ((ch->chunk_type == SCTP_INITIATION) ||
 		    (ch->chunk_type == SCTP_INITIATION_ACK)) {
 			/* need to update the Vtag */
 			init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m,
 			    offset, sizeof(struct sctp_init_chunk), (uint8_t *)&chunk_buf);
 			if (init_chk != NULL) {
 				*vtag = ntohl(init_chk->init.initiate_tag);
 			}
 		}
 		/* Nope, move to the next chunk */
 		offset += SCTP_SIZE32(chk_length);
 		ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
 		    sizeof(*ch), (uint8_t *)&chunk_buf);
 	}
 	return (0);
 }
 
 /*
  * currently (2/02), ifa_addr embeds scope_id's and don't have sin6_scope_id
  * set (i.e. it's 0) so, create this function to compare link local scopes
  */
 #ifdef INET6
 uint32_t
 sctp_is_same_scope(struct sockaddr_in6 *addr1, struct sockaddr_in6 *addr2)
 {
 	struct sockaddr_in6 a, b;
 
 	/* save copies */
 	a = *addr1;
 	b = *addr2;
 
 	if (a.sin6_scope_id == 0)
 		if (sa6_recoverscope(&a)) {
 			/* can't get scope, so can't match */
 			return (0);
 		}
 	if (b.sin6_scope_id == 0)
 		if (sa6_recoverscope(&b)) {
 			/* can't get scope, so can't match */
 			return (0);
 		}
 	if (a.sin6_scope_id != b.sin6_scope_id)
 		return (0);
 
 	return (1);
 }
 
 /*
  * returns a sockaddr_in6 with embedded scope recovered and removed
  */
 struct sockaddr_in6 *
 sctp_recover_scope(struct sockaddr_in6 *addr, struct sockaddr_in6 *store)
 {
 	/* check and strip embedded scope junk */
 	if (addr->sin6_family == AF_INET6) {
 		if (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr)) {
 			if (addr->sin6_scope_id == 0) {
 				*store = *addr;
 				if (!sa6_recoverscope(store)) {
 					/* use the recovered scope */
 					addr = store;
 				}
 			} else {
 				/* else, return the original "to" addr */
 				in6_clearscope(&addr->sin6_addr);
 			}
 		}
 	}
 	return (addr);
 }
 #endif
 
 /*
  * are the two addresses the same?  currently a "scopeless" check returns: 1
  * if same, 0 if not
  */
 int
 sctp_cmpaddr(struct sockaddr *sa1, struct sockaddr *sa2)
 {
 
 	/* must be valid */
 	if (sa1 == NULL || sa2 == NULL)
 		return (0);
 
 	/* must be the same family */
 	if (sa1->sa_family != sa2->sa_family)
 		return (0);
 
 	switch (sa1->sa_family) {
 #ifdef INET6
 	case AF_INET6:
 		{
 			/* IPv6 addresses */
 			struct sockaddr_in6 *sin6_1, *sin6_2;
 
 			sin6_1 = (struct sockaddr_in6 *)sa1;
 			sin6_2 = (struct sockaddr_in6 *)sa2;
 			return (SCTP6_ARE_ADDR_EQUAL(sin6_1,
 			    sin6_2));
 		}
 #endif
 #ifdef INET
 	case AF_INET:
 		{
 			/* IPv4 addresses */
 			struct sockaddr_in *sin_1, *sin_2;
 
 			sin_1 = (struct sockaddr_in *)sa1;
 			sin_2 = (struct sockaddr_in *)sa2;
 			return (sin_1->sin_addr.s_addr == sin_2->sin_addr.s_addr);
 		}
 #endif
 	default:
 		/* we don't do these... */
 		return (0);
 	}
 }
 
 void
 sctp_print_address(struct sockaddr *sa)
 {
 #ifdef INET6
 	char ip6buf[INET6_ADDRSTRLEN];
 #endif
 
 	switch (sa->sa_family) {
 #ifdef INET6
 	case AF_INET6:
 		{
 			struct sockaddr_in6 *sin6;
 
 			sin6 = (struct sockaddr_in6 *)sa;
 			SCTP_PRINTF("IPv6 address: %s:port:%d scope:%u\n",
 			    ip6_sprintf(ip6buf, &sin6->sin6_addr),
 			    ntohs(sin6->sin6_port),
 			    sin6->sin6_scope_id);
 			break;
 		}
 #endif
 #ifdef INET
 	case AF_INET:
 		{
 			struct sockaddr_in *sin;
 			unsigned char *p;
 
 			sin = (struct sockaddr_in *)sa;
 			p = (unsigned char *)&sin->sin_addr;
 			SCTP_PRINTF("IPv4 address: %u.%u.%u.%u:%d\n",
 			    p[0], p[1], p[2], p[3], ntohs(sin->sin_port));
 			break;
 		}
 #endif
 	default:
 		SCTP_PRINTF("?\n");
 		break;
 	}
 }
 
 void
 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp,
     struct sctp_inpcb *new_inp,
     struct sctp_tcb *stcb,
     int waitflags)
 {
 	/*
 	 * go through our old INP and pull off any control structures that
 	 * belong to stcb and move then to the new inp.
 	 */
 	struct socket *old_so, *new_so;
 	struct sctp_queued_to_read *control, *nctl;
 	struct sctp_readhead tmp_queue;
 	struct mbuf *m;
 	int error = 0;
 
 	old_so = old_inp->sctp_socket;
 	new_so = new_inp->sctp_socket;
 	TAILQ_INIT(&tmp_queue);
 	error = SOCK_IO_RECV_LOCK(old_so, waitflags);
 	if (error) {
 		/*
 		 * Gak, can't get I/O lock, we have a problem. data will be
 		 * left stranded.. and we don't dare look at it since the
 		 * other thread may be reading something. Oh well, its a
 		 * screwed up app that does a peeloff OR a accept while
 		 * reading from the main socket... actually its only the
 		 * peeloff() case, since I think read will fail on a
 		 * listening socket..
 		 */
 		return;
 	}
 	/* lock the socket buffers */
 	SCTP_INP_READ_LOCK(old_inp);
 	TAILQ_FOREACH_SAFE(control, &old_inp->read_queue, next, nctl) {
 		/* Pull off all for out target stcb */
 		if (control->stcb == stcb) {
 			/* remove it we want it */
 			TAILQ_REMOVE(&old_inp->read_queue, control, next);
 			TAILQ_INSERT_TAIL(&tmp_queue, control, next);
 			m = control->data;
 			while (m) {
 				if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
 					sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
 				}
 				sctp_sbfree(control, stcb, &old_so->so_rcv, m);
 				if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
 					sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
 				}
 				m = SCTP_BUF_NEXT(m);
 			}
 		}
 	}
 	SCTP_INP_READ_UNLOCK(old_inp);
 	/* Remove the recv-lock on the old socket */
 	SOCK_IO_RECV_UNLOCK(old_so);
 	/* Now we move them over to the new socket buffer */
 	SCTP_INP_READ_LOCK(new_inp);
 	TAILQ_FOREACH_SAFE(control, &tmp_queue, next, nctl) {
 		TAILQ_INSERT_TAIL(&new_inp->read_queue, control, next);
 		m = control->data;
 		while (m) {
 			if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
 				sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
 			}
 			sctp_sballoc(stcb, &new_so->so_rcv, m);
 			if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
 				sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
 			}
 			m = SCTP_BUF_NEXT(m);
 		}
 	}
 	SCTP_INP_READ_UNLOCK(new_inp);
 }
 
 void
 sctp_wakeup_the_read_socket(struct sctp_inpcb *inp,
     struct sctp_tcb *stcb,
     int so_locked
     SCTP_UNUSED
 )
 {
 	if ((inp != NULL) &&
 	    (inp->sctp_socket != NULL) &&
 	    (((inp->sctp_flags & (SCTP_PCB_FLAGS_TCPTYPE | SCTP_PCB_FLAGS_IN_TCPPOOL)) == 0) ||
 	    !SCTP_IS_LISTENING(inp))) {
 		sctp_sorwakeup(inp, inp->sctp_socket);
 	}
 }
 
 void
 sctp_add_to_readq(struct sctp_inpcb *inp,
     struct sctp_tcb *stcb,
     struct sctp_queued_to_read *control,
     struct sockbuf *sb,
     int end,
     int inp_read_lock_held,
     int so_locked)
 {
 	/*
 	 * Here we must place the control on the end of the socket read
 	 * queue AND increment sb_cc so that select will work properly on
 	 * read.
 	 */
 	struct mbuf *m, *prev = NULL;
 
 	if (inp == NULL) {
 		/* Gak, TSNH!! */
 #ifdef INVARIANTS
 		panic("Gak, inp NULL on add_to_readq");
 #endif
 		return;
 	}
 	if (inp_read_lock_held == SCTP_READ_LOCK_NOT_HELD) {
 		SCTP_INP_READ_LOCK(inp);
 	}
 	if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
 		if (!control->on_strm_q) {
 			sctp_free_remote_addr(control->whoFrom);
 			if (control->data) {
 				sctp_m_freem(control->data);
 				control->data = NULL;
 			}
 			sctp_free_a_readq(stcb, control);
 		}
 		if (inp_read_lock_held == SCTP_READ_LOCK_NOT_HELD) {
 			SCTP_INP_READ_UNLOCK(inp);
 		}
 		return;
 	}
 	if ((control->spec_flags & M_NOTIFICATION) == 0) {
 		atomic_add_int(&inp->total_recvs, 1);
 		if (!control->do_not_ref_stcb) {
 			atomic_add_int(&stcb->total_recvs, 1);
 		}
 	}
 	m = control->data;
 	control->held_length = 0;
 	control->length = 0;
 	while (m != NULL) {
 		if (SCTP_BUF_LEN(m) == 0) {
 			/* Skip mbufs with NO length */
 			if (prev == NULL) {
 				/* First one */
 				control->data = sctp_m_free(m);
 				m = control->data;
 			} else {
 				SCTP_BUF_NEXT(prev) = sctp_m_free(m);
 				m = SCTP_BUF_NEXT(prev);
 			}
 			if (m == NULL) {
 				control->tail_mbuf = prev;
 			}
 			continue;
 		}
 		prev = m;
 		if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
 			sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
 		}
 		sctp_sballoc(stcb, sb, m);
 		if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
 			sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
 		}
 		atomic_add_int(&control->length, SCTP_BUF_LEN(m));
 		m = SCTP_BUF_NEXT(m);
 	}
 	if (prev != NULL) {
 		control->tail_mbuf = prev;
 	} else {
 		/* Everything got collapsed out?? */
 		if (!control->on_strm_q) {
 			sctp_free_remote_addr(control->whoFrom);
 			sctp_free_a_readq(stcb, control);
 		}
 		if (inp_read_lock_held == 0)
 			SCTP_INP_READ_UNLOCK(inp);
 		return;
 	}
 	if (end) {
 		control->end_added = 1;
 	}
 	TAILQ_INSERT_TAIL(&inp->read_queue, control, next);
 	control->on_read_q = 1;
 	if ((inp != NULL) && (inp->sctp_socket != NULL)) {
 		sctp_wakeup_the_read_socket(inp, stcb, so_locked);
 	}
 	if (inp_read_lock_held == SCTP_READ_LOCK_NOT_HELD) {
 		SCTP_INP_READ_UNLOCK(inp);
 	}
 }
 
 /*************HOLD THIS COMMENT FOR PATCH FILE OF
  *************ALTERNATE ROUTING CODE
  */
 
 /*************HOLD THIS COMMENT FOR END OF PATCH FILE OF
  *************ALTERNATE ROUTING CODE
  */
 
 struct mbuf *
 sctp_generate_cause(uint16_t code, char *info)
 {
 	struct mbuf *m;
 	struct sctp_gen_error_cause *cause;
 	size_t info_len;
 	uint16_t len;
 
 	if ((code == 0) || (info == NULL)) {
 		return (NULL);
 	}
 	info_len = strlen(info);
 	if (info_len > (SCTP_MAX_CAUSE_LENGTH - sizeof(struct sctp_paramhdr))) {
 		return (NULL);
 	}
 	len = (uint16_t)(sizeof(struct sctp_paramhdr) + info_len);
 	m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
 	if (m != NULL) {
 		SCTP_BUF_LEN(m) = len;
 		cause = mtod(m, struct sctp_gen_error_cause *);
 		cause->code = htons(code);
 		cause->length = htons(len);
 		memcpy(cause->info, info, info_len);
 	}
 	return (m);
 }
 
 struct mbuf *
 sctp_generate_no_user_data_cause(uint32_t tsn)
 {
 	struct mbuf *m;
 	struct sctp_error_no_user_data *no_user_data_cause;
 	uint16_t len;
 
 	len = (uint16_t)sizeof(struct sctp_error_no_user_data);
 	m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
 	if (m != NULL) {
 		SCTP_BUF_LEN(m) = len;
 		no_user_data_cause = mtod(m, struct sctp_error_no_user_data *);
 		no_user_data_cause->cause.code = htons(SCTP_CAUSE_NO_USER_DATA);
 		no_user_data_cause->cause.length = htons(len);
 		no_user_data_cause->tsn = htonl(tsn);
 	}
 	return (m);
 }
 
 void
 sctp_free_bufspace(struct sctp_tcb *stcb, struct sctp_association *asoc,
     struct sctp_tmit_chunk *tp1, int chk_cnt)
 {
 	if (tp1->data == NULL) {
 		return;
 	}
 	atomic_subtract_int(&asoc->chunks_on_out_queue, chk_cnt);
 #ifdef SCTP_MBCNT_LOGGING
 	if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBCNT_LOGGING_ENABLE) {
 		sctp_log_mbcnt(SCTP_LOG_MBCNT_DECREASE,
 		    asoc->total_output_queue_size,
 		    tp1->book_size,
 		    0,
 		    tp1->mbcnt);
 	}
 #endif
 	if (asoc->total_output_queue_size >= tp1->book_size) {
 		atomic_subtract_int(&asoc->total_output_queue_size, tp1->book_size);
 	} else {
 		asoc->total_output_queue_size = 0;
 	}
 	if ((stcb->sctp_socket != NULL) &&
 	    (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) ||
 	    ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)))) {
 		SCTP_SB_DECR(&stcb->sctp_socket->so_snd, tp1->book_size);
 	}
 }
 
 int
 sctp_release_pr_sctp_chunk(struct sctp_tcb *stcb, struct sctp_tmit_chunk *tp1,
     uint8_t sent, int so_locked)
 {
 	struct sctp_stream_out *strq;
 	struct sctp_tmit_chunk *chk = NULL, *tp2;
 	struct sctp_stream_queue_pending *sp;
 	uint32_t mid;
 	uint16_t sid;
 	uint8_t foundeom = 0;
 	int ret_sz = 0;
 	int notdone;
 	int do_wakeup_routine = 0;
 
 	SCTP_TCB_LOCK_ASSERT(stcb);
 
 	sid = tp1->rec.data.sid;
 	mid = tp1->rec.data.mid;
 	if (sent || ((tp1->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG) == 0)) {
 		stcb->asoc.abandoned_sent[0]++;
 		stcb->asoc.abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
 		stcb->asoc.strmout[sid].abandoned_sent[0]++;
 #if defined(SCTP_DETAILED_STR_STATS)
 		stcb->asoc.strmout[sid].abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
 #endif
 	} else {
 		stcb->asoc.abandoned_unsent[0]++;
 		stcb->asoc.abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
 		stcb->asoc.strmout[sid].abandoned_unsent[0]++;
 #if defined(SCTP_DETAILED_STR_STATS)
 		stcb->asoc.strmout[sid].abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
 #endif
 	}
 	do {
 		ret_sz += tp1->book_size;
 		if (tp1->data != NULL) {
 			if (tp1->sent < SCTP_DATAGRAM_RESEND) {
 				sctp_flight_size_decrease(tp1);
 				sctp_total_flight_decrease(stcb, tp1);
 			}
 			sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
 			stcb->asoc.peers_rwnd += tp1->send_size;
 			stcb->asoc.peers_rwnd += SCTP_BASE_SYSCTL(sctp_peer_chunk_oh);
 			if (sent) {
 				sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
 			} else {
 				sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
 			}
 			if (tp1->data) {
 				sctp_m_freem(tp1->data);
 				tp1->data = NULL;
 			}
 			do_wakeup_routine = 1;
 			if (PR_SCTP_BUF_ENABLED(tp1->flags)) {
 				stcb->asoc.sent_queue_cnt_removeable--;
 			}
 		}
 		tp1->sent = SCTP_FORWARD_TSN_SKIP;
 		if ((tp1->rec.data.rcv_flags & SCTP_DATA_NOT_FRAG) ==
 		    SCTP_DATA_NOT_FRAG) {
 			/* not frag'ed we ae done   */
 			notdone = 0;
 			foundeom = 1;
 		} else if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
 			/* end of frag, we are done */
 			notdone = 0;
 			foundeom = 1;
 		} else {
 			/*
 			 * Its a begin or middle piece, we must mark all of
 			 * it
 			 */
 			notdone = 1;
 			tp1 = TAILQ_NEXT(tp1, sctp_next);
 		}
 	} while (tp1 && notdone);
 	if (foundeom == 0) {
 		/*
 		 * The multi-part message was scattered across the send and
 		 * sent queue.
 		 */
 		TAILQ_FOREACH_SAFE(tp1, &stcb->asoc.send_queue, sctp_next, tp2) {
 			if ((tp1->rec.data.sid != sid) ||
 			    (!SCTP_MID_EQ(stcb->asoc.idata_supported, tp1->rec.data.mid, mid))) {
 				break;
 			}
 			/*
 			 * save to chk in case we have some on stream out
 			 * queue. If so and we have an un-transmitted one we
 			 * don't have to fudge the TSN.
 			 */
 			chk = tp1;
 			ret_sz += tp1->book_size;
 			sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
 			if (sent) {
 				sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
 			} else {
 				sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
 			}
 			if (tp1->data) {
 				sctp_m_freem(tp1->data);
 				tp1->data = NULL;
 			}
 			/* No flight involved here book the size to 0 */
 			tp1->book_size = 0;
 			if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
 				foundeom = 1;
 			}
 			do_wakeup_routine = 1;
 			tp1->sent = SCTP_FORWARD_TSN_SKIP;
 			TAILQ_REMOVE(&stcb->asoc.send_queue, tp1, sctp_next);
 			/*
 			 * on to the sent queue so we can wait for it to be
 			 * passed by.
 			 */
 			TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, tp1,
 			    sctp_next);
 			stcb->asoc.send_queue_cnt--;
 			stcb->asoc.sent_queue_cnt++;
 		}
 	}
 	if (foundeom == 0) {
 		/*
 		 * Still no eom found. That means there is stuff left on the
 		 * stream out queue.. yuck.
 		 */
 		strq = &stcb->asoc.strmout[sid];
 		sp = TAILQ_FIRST(&strq->outqueue);
 		if (sp != NULL) {
 			sp->discard_rest = 1;
 			/*
 			 * We may need to put a chunk on the queue that
 			 * holds the TSN that would have been sent with the
 			 * LAST bit.
 			 */
 			if (chk == NULL) {
 				/* Yep, we have to */
 				sctp_alloc_a_chunk(stcb, chk);
 				if (chk == NULL) {
 					/*
 					 * we are hosed. All we can do is
 					 * nothing.. which will cause an
 					 * abort if the peer is paying
 					 * attention.
 					 */
 					goto oh_well;
 				}
 				memset(chk, 0, sizeof(*chk));
 				chk->rec.data.rcv_flags = 0;
 				chk->sent = SCTP_FORWARD_TSN_SKIP;
 				chk->asoc = &stcb->asoc;
 				if (stcb->asoc.idata_supported == 0) {
 					if (sp->sinfo_flags & SCTP_UNORDERED) {
 						chk->rec.data.mid = 0;
 					} else {
 						chk->rec.data.mid = strq->next_mid_ordered;
 					}
 				} else {
 					if (sp->sinfo_flags & SCTP_UNORDERED) {
 						chk->rec.data.mid = strq->next_mid_unordered;
 					} else {
 						chk->rec.data.mid = strq->next_mid_ordered;
 					}
 				}
 				chk->rec.data.sid = sp->sid;
 				chk->rec.data.ppid = sp->ppid;
 				chk->rec.data.context = sp->context;
 				chk->flags = sp->act_flags;
 				chk->whoTo = NULL;
 				chk->rec.data.tsn = atomic_fetchadd_int(&stcb->asoc.sending_seq, 1);
 				strq->chunks_on_queues++;
 				TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, chk, sctp_next);
 				stcb->asoc.sent_queue_cnt++;
 				stcb->asoc.pr_sctp_cnt++;
 			}
 			chk->rec.data.rcv_flags |= SCTP_DATA_LAST_FRAG;
 			if (sp->sinfo_flags & SCTP_UNORDERED) {
 				chk->rec.data.rcv_flags |= SCTP_DATA_UNORDERED;
 			}
 			if (stcb->asoc.idata_supported == 0) {
 				if ((sp->sinfo_flags & SCTP_UNORDERED) == 0) {
 					strq->next_mid_ordered++;
 				}
 			} else {
 				if (sp->sinfo_flags & SCTP_UNORDERED) {
 					strq->next_mid_unordered++;
 				} else {
 					strq->next_mid_ordered++;
 				}
 			}
 	oh_well:
 			if (sp->data) {
 				/*
 				 * Pull any data to free up the SB and allow
 				 * sender to "add more" while we will throw
 				 * away :-)
 				 */
 				sctp_free_spbufspace(stcb, &stcb->asoc, sp);
 				ret_sz += sp->length;
 				do_wakeup_routine = 1;
 				sp->some_taken = 1;
 				sctp_m_freem(sp->data);
 				sp->data = NULL;
 				sp->tail_mbuf = NULL;
 				sp->length = 0;
 			}
 		}
 	}
 	if (do_wakeup_routine) {
 		sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket);
 	}
 	return (ret_sz);
 }
 
 /*
  * checks to see if the given address, sa, is one that is currently known by
  * the kernel note: can't distinguish the same address on multiple interfaces
  * and doesn't handle multiple addresses with different zone/scope id's note:
  * ifa_ifwithaddr() compares the entire sockaddr struct
  */
 struct sctp_ifa *
 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr,
     int holds_lock)
 {
 	struct sctp_laddr *laddr;
 
 	if (holds_lock == 0) {
 		SCTP_INP_RLOCK(inp);
 	}
 
 	LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
 		if (laddr->ifa == NULL)
 			continue;
 		if (addr->sa_family != laddr->ifa->address.sa.sa_family)
 			continue;
 #ifdef INET
 		if (addr->sa_family == AF_INET) {
 			if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
 			    laddr->ifa->address.sin.sin_addr.s_addr) {
 				/* found him. */
 				break;
 			}
 		}
 #endif
 #ifdef INET6
 		if (addr->sa_family == AF_INET6) {
 			if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
 			    &laddr->ifa->address.sin6)) {
 				/* found him. */
 				break;
 			}
 		}
 #endif
 	}
 	if (holds_lock == 0) {
 		SCTP_INP_RUNLOCK(inp);
 	}
 	if (laddr != NULL) {
 		return (laddr->ifa);
 	} else {
 		return (NULL);
 	}
 }
 
 uint32_t
 sctp_get_ifa_hash_val(struct sockaddr *addr)
 {
 	switch (addr->sa_family) {
 #ifdef INET
 	case AF_INET:
 		{
 			struct sockaddr_in *sin;
 
 			sin = (struct sockaddr_in *)addr;
 			return (sin->sin_addr.s_addr ^ (sin->sin_addr.s_addr >> 16));
 		}
 #endif
 #ifdef INET6
 	case AF_INET6:
 		{
 			struct sockaddr_in6 *sin6;
 			uint32_t hash_of_addr;
 
 			sin6 = (struct sockaddr_in6 *)addr;
 			hash_of_addr = (sin6->sin6_addr.s6_addr32[0] +
 			    sin6->sin6_addr.s6_addr32[1] +
 			    sin6->sin6_addr.s6_addr32[2] +
 			    sin6->sin6_addr.s6_addr32[3]);
 			hash_of_addr = (hash_of_addr ^ (hash_of_addr >> 16));
 			return (hash_of_addr);
 		}
 #endif
 	default:
 		break;
 	}
 	return (0);
 }
 
 struct sctp_ifa *
 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock)
 {
 	struct sctp_ifa *sctp_ifap;
 	struct sctp_vrf *vrf;
 	struct sctp_ifalist *hash_head;
 	uint32_t hash_of_addr;
 
 	if (holds_lock == 0) {
 		SCTP_IPI_ADDR_RLOCK();
 	} else {
 		SCTP_IPI_ADDR_LOCK_ASSERT();
 	}
 
 	vrf = sctp_find_vrf(vrf_id);
 	if (vrf == NULL) {
 		if (holds_lock == 0)
 			SCTP_IPI_ADDR_RUNLOCK();
 		return (NULL);
 	}
 
 	hash_of_addr = sctp_get_ifa_hash_val(addr);
 
 	hash_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
 	if (hash_head == NULL) {
 		SCTP_PRINTF("hash_of_addr:%x mask:%x table:%x - ",
 		    hash_of_addr, (uint32_t)vrf->vrf_addr_hashmark,
 		    (uint32_t)(hash_of_addr & vrf->vrf_addr_hashmark));
 		sctp_print_address(addr);
 		SCTP_PRINTF("No such bucket for address\n");
 		if (holds_lock == 0)
 			SCTP_IPI_ADDR_RUNLOCK();
 
 		return (NULL);
 	}
 	LIST_FOREACH(sctp_ifap, hash_head, next_bucket) {
 		if (addr->sa_family != sctp_ifap->address.sa.sa_family)
 			continue;
 #ifdef INET
 		if (addr->sa_family == AF_INET) {
 			if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
 			    sctp_ifap->address.sin.sin_addr.s_addr) {
 				/* found him. */
 				break;
 			}
 		}
 #endif
 #ifdef INET6
 		if (addr->sa_family == AF_INET6) {
 			if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
 			    &sctp_ifap->address.sin6)) {
 				/* found him. */
 				break;
 			}
 		}
 #endif
 	}
 	if (holds_lock == 0)
 		SCTP_IPI_ADDR_RUNLOCK();
 	return (sctp_ifap);
 }
 
 static void
 sctp_user_rcvd(struct sctp_tcb *stcb, uint32_t *freed_so_far, int hold_rlock,
     uint32_t rwnd_req)
 {
 	/* User pulled some data, do we need a rwnd update? */
 	struct epoch_tracker et;
 	int r_unlocked = 0;
 	uint32_t dif, rwnd;
 	struct socket *so = NULL;
 
 	if (stcb == NULL)
 		return;
 
 	atomic_add_int(&stcb->asoc.refcnt, 1);
 
 	if ((SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_ACK_SENT) ||
 	    (stcb->asoc.state & (SCTP_STATE_ABOUT_TO_BE_FREED | SCTP_STATE_SHUTDOWN_RECEIVED))) {
 		/* Pre-check If we are freeing no update */
 		goto no_lock;
 	}
 	SCTP_INP_INCR_REF(stcb->sctp_ep);
 	if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
 	    (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
 		goto out;
 	}
 	so = stcb->sctp_socket;
 	if (so == NULL) {
 		goto out;
 	}
 	atomic_add_int(&stcb->freed_by_sorcv_sincelast, *freed_so_far);
 	/* Have you have freed enough to look */
 	*freed_so_far = 0;
 	/* Yep, its worth a look and the lock overhead */
 
 	/* Figure out what the rwnd would be */
 	rwnd = sctp_calc_rwnd(stcb, &stcb->asoc);
 	if (rwnd >= stcb->asoc.my_last_reported_rwnd) {
 		dif = rwnd - stcb->asoc.my_last_reported_rwnd;
 	} else {
 		dif = 0;
 	}
 	if (dif >= rwnd_req) {
 		if (hold_rlock) {
 			SCTP_INP_READ_UNLOCK(stcb->sctp_ep);
 			r_unlocked = 1;
 		}
 		if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
 			/*
 			 * One last check before we allow the guy possibly
 			 * to get in. There is a race, where the guy has not
 			 * reached the gate. In that case
 			 */
 			goto out;
 		}
 		SCTP_TCB_LOCK(stcb);
 		if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
 			/* No reports here */
 			SCTP_TCB_UNLOCK(stcb);
 			goto out;
 		}
 		SCTP_STAT_INCR(sctps_wu_sacks_sent);
 		NET_EPOCH_ENTER(et);
 		sctp_send_sack(stcb, SCTP_SO_LOCKED);
 
 		sctp_chunk_output(stcb->sctp_ep, stcb,
 		    SCTP_OUTPUT_FROM_USR_RCVD, SCTP_SO_LOCKED);
 		/* make sure no timer is running */
 		NET_EPOCH_EXIT(et);
 		sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL,
 		    SCTP_FROM_SCTPUTIL + SCTP_LOC_6);
 		SCTP_TCB_UNLOCK(stcb);
 	} else {
 		/* Update how much we have pending */
 		stcb->freed_by_sorcv_sincelast = dif;
 	}
 out:
 	if (so && r_unlocked && hold_rlock) {
 		SCTP_INP_READ_LOCK(stcb->sctp_ep);
 	}
 
 	SCTP_INP_DECR_REF(stcb->sctp_ep);
 no_lock:
 	atomic_subtract_int(&stcb->asoc.refcnt, 1);
 	return;
 }
 
 int
 sctp_sorecvmsg(struct socket *so,
     struct uio *uio,
     struct mbuf **mp,
     struct sockaddr *from,
     int fromlen,
     int *msg_flags,
     struct sctp_sndrcvinfo *sinfo,
     int filling_sinfo)
 {
 	/*
 	 * MSG flags we will look at MSG_DONTWAIT - non-blocking IO.
 	 * MSG_PEEK - Look don't touch :-D (only valid with OUT mbuf copy
 	 * mp=NULL thus uio is the copy method to userland) MSG_WAITALL - ??
 	 * On the way out we may send out any combination of:
 	 * MSG_NOTIFICATION MSG_EOR
 	 *
 	 */
 	struct sctp_inpcb *inp = NULL;
 	ssize_t my_len = 0;
 	ssize_t cp_len = 0;
 	int error = 0;
 	struct sctp_queued_to_read *control = NULL, *ctl = NULL, *nxt = NULL;
 	struct mbuf *m = NULL;
 	struct sctp_tcb *stcb = NULL;
 	int wakeup_read_socket = 0;
 	int freecnt_applied = 0;
 	int out_flags = 0, in_flags = 0;
 	int block_allowed = 1;
 	uint32_t freed_so_far = 0;
 	ssize_t copied_so_far = 0;
 	int in_eeor_mode = 0;
 	int no_rcv_needed = 0;
 	uint32_t rwnd_req = 0;
 	int hold_sblock = 0;
 	int hold_rlock = 0;
 	ssize_t slen = 0;
 	uint32_t held_length = 0;
 	int sockbuf_lock = 0;
 
 	if (uio == NULL) {
 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
 		return (EINVAL);
 	}
 
 	if (msg_flags) {
 		in_flags = *msg_flags;
 		if (in_flags & MSG_PEEK)
 			SCTP_STAT_INCR(sctps_read_peeks);
 	} else {
 		in_flags = 0;
 	}
 	slen = uio->uio_resid;
 
 	/* Pull in and set up our int flags */
 	if (in_flags & MSG_OOB) {
 		/* Out of band's NOT supported */
 		return (EOPNOTSUPP);
 	}
 	if ((in_flags & MSG_PEEK) && (mp != NULL)) {
 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
 		return (EINVAL);
 	}
 	if ((in_flags & (MSG_DONTWAIT
 	    | MSG_NBIO
 	    )) ||
 	    SCTP_SO_IS_NBIO(so)) {
 		block_allowed = 0;
 	}
 	/* setup the endpoint */
 	inp = (struct sctp_inpcb *)so->so_pcb;
 	if (inp == NULL) {
 		SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT);
 		return (EFAULT);
 	}
 	rwnd_req = (SCTP_SB_LIMIT_RCV(so) >> SCTP_RWND_HIWAT_SHIFT);
 	/* Must be at least a MTU's worth */
 	if (rwnd_req < SCTP_MIN_RWND)
 		rwnd_req = SCTP_MIN_RWND;
 	in_eeor_mode = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
 	if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
 		sctp_misc_ints(SCTP_SORECV_ENTER,
 		    rwnd_req, in_eeor_mode, SCTP_SBAVAIL(&so->so_rcv), (uint32_t)uio->uio_resid);
 	}
 	if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
 		sctp_misc_ints(SCTP_SORECV_ENTERPL,
 		    rwnd_req, block_allowed, SCTP_SBAVAIL(&so->so_rcv), (uint32_t)uio->uio_resid);
 	}
 
 	error = SOCK_IO_RECV_LOCK(so, SBLOCKWAIT(in_flags));
 	if (error) {
 		goto release_unlocked;
 	}
 	sockbuf_lock = 1;
 restart:
 
 restart_nosblocks:
 	if (hold_sblock == 0) {
 		SOCKBUF_LOCK(&so->so_rcv);
 		hold_sblock = 1;
 	}
 	if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
 	    (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
 		goto out;
 	}
 	if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && SCTP_SBAVAIL(&so->so_rcv) == 0) {
 		if (so->so_error) {
 			error = so->so_error;
 			if ((in_flags & MSG_PEEK) == 0)
 				so->so_error = 0;
 			goto out;
 		} else {
 			if (SCTP_SBAVAIL(&so->so_rcv) == 0) {
 				/* indicate EOF */
 				error = 0;
 				goto out;
 			}
 		}
 	}
 	if (SCTP_SBAVAIL(&so->so_rcv) <= held_length) {
 		if (so->so_error) {
 			error = so->so_error;
 			if ((in_flags & MSG_PEEK) == 0) {
 				so->so_error = 0;
 			}
 			goto out;
 		}
 		if ((SCTP_SBAVAIL(&so->so_rcv) == 0) &&
 		    ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
 		    (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) {
 			if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
 				/*
 				 * For active open side clear flags for
 				 * re-use passive open is blocked by
 				 * connect.
 				 */
 				if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
 					/*
 					 * You were aborted, passive side
 					 * always hits here
 					 */
 					SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
 					error = ECONNRESET;
 				}
 				so->so_state &= ~(SS_ISCONNECTING |
 				    SS_ISDISCONNECTING |
 				    SS_ISCONFIRMING |
 				    SS_ISCONNECTED);
 				if (error == 0) {
 					if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
 						SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
 						error = ENOTCONN;
 					}
 				}
 				goto out;
 			}
 		}
 		if (block_allowed) {
 			error = sbwait(so, SO_RCV);
 			if (error) {
 				goto out;
 			}
 			held_length = 0;
 			goto restart_nosblocks;
 		} else {
 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EWOULDBLOCK);
 			error = EWOULDBLOCK;
 			goto out;
 		}
 	}
 	if (hold_sblock == 1) {
 		SOCKBUF_UNLOCK(&so->so_rcv);
 		hold_sblock = 0;
 	}
 	/* we possibly have data we can read */
 	/* sa_ignore FREED_MEMORY */
 	control = TAILQ_FIRST(&inp->read_queue);
 	if (control == NULL) {
 		/*
 		 * This could be happening since the appender did the
 		 * increment but as not yet did the tailq insert onto the
 		 * read_queue
 		 */
 		if (hold_rlock == 0) {
 			SCTP_INP_READ_LOCK(inp);
 		}
 		control = TAILQ_FIRST(&inp->read_queue);
 		if ((control == NULL) && (SCTP_SBAVAIL(&so->so_rcv) > 0)) {
 #ifdef INVARIANTS
 			panic("Huh, its non zero and nothing on control?");
 #endif
 			SCTP_SB_CLEAR(so->so_rcv);
 		}
 		SCTP_INP_READ_UNLOCK(inp);
 		hold_rlock = 0;
 		goto restart;
 	}
 
 	if ((control->length == 0) &&
 	    (control->do_not_ref_stcb)) {
 		/*
 		 * Clean up code for freeing assoc that left behind a
 		 * pdapi.. maybe a peer in EEOR that just closed after
 		 * sending and never indicated a EOR.
 		 */
 		if (hold_rlock == 0) {
 			hold_rlock = 1;
 			SCTP_INP_READ_LOCK(inp);
 		}
 		control->held_length = 0;
 		if (control->data) {
 			/* Hmm there is data here .. fix */
 			struct mbuf *m_tmp;
 			int cnt = 0;
 
 			m_tmp = control->data;
 			while (m_tmp) {
 				cnt += SCTP_BUF_LEN(m_tmp);
 				if (SCTP_BUF_NEXT(m_tmp) == NULL) {
 					control->tail_mbuf = m_tmp;
 					control->end_added = 1;
 				}
 				m_tmp = SCTP_BUF_NEXT(m_tmp);
 			}
 			control->length = cnt;
 		} else {
 			/* remove it */
 			TAILQ_REMOVE(&inp->read_queue, control, next);
 			/* Add back any hidden data */
 			sctp_free_remote_addr(control->whoFrom);
 			sctp_free_a_readq(stcb, control);
 		}
 		if (hold_rlock) {
 			hold_rlock = 0;
 			SCTP_INP_READ_UNLOCK(inp);
 		}
 		goto restart;
 	}
 	if ((control->length == 0) &&
 	    (control->end_added == 1)) {
 		/*
 		 * Do we also need to check for (control->pdapi_aborted ==
 		 * 1)?
 		 */
 		if (hold_rlock == 0) {
 			hold_rlock = 1;
 			SCTP_INP_READ_LOCK(inp);
 		}
 		TAILQ_REMOVE(&inp->read_queue, control, next);
 		if (control->data) {
 #ifdef INVARIANTS
 			panic("control->data not null but control->length == 0");
 #else
 			SCTP_PRINTF("Strange, data left in the control buffer. Cleaning up.\n");
 			sctp_m_freem(control->data);
 			control->data = NULL;
 #endif
 		}
 		if (control->aux_data) {
 			sctp_m_free(control->aux_data);
 			control->aux_data = NULL;
 		}
 #ifdef INVARIANTS
 		if (control->on_strm_q) {
 			panic("About to free ctl:%p so:%p and its in %d",
 			    control, so, control->on_strm_q);
 		}
 #endif
 		sctp_free_remote_addr(control->whoFrom);
 		sctp_free_a_readq(stcb, control);
 		if (hold_rlock) {
 			hold_rlock = 0;
 			SCTP_INP_READ_UNLOCK(inp);
 		}
 		goto restart;
 	}
 	if (control->length == 0) {
 		if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) &&
 		    (filling_sinfo)) {
 			/* find a more suitable one then this */
 			ctl = TAILQ_NEXT(control, next);
 			while (ctl) {
 				if ((ctl->stcb != control->stcb) && (ctl->length) &&
 				    (ctl->some_taken ||
 				    (ctl->spec_flags & M_NOTIFICATION) ||
 				    ((ctl->do_not_ref_stcb == 0) &&
 				    (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))
 				    ) {
 					/*-
 					 * If we have a different TCB next, and there is data
 					 * present. If we have already taken some (pdapi), OR we can
 					 * ref the tcb and no delivery as started on this stream, we
 					 * take it. Note we allow a notification on a different
 					 * assoc to be delivered..
 					 */
 					control = ctl;
 					goto found_one;
 				} else if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) &&
 					    (ctl->length) &&
 					    ((ctl->some_taken) ||
 					    ((ctl->do_not_ref_stcb == 0) &&
 					    ((ctl->spec_flags & M_NOTIFICATION) == 0) &&
 				    (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))) {
 					/*-
 					 * If we have the same tcb, and there is data present, and we
 					 * have the strm interleave feature present. Then if we have
 					 * taken some (pdapi) or we can refer to tht tcb AND we have
 					 * not started a delivery for this stream, we can take it.
 					 * Note we do NOT allow a notification on the same assoc to
 					 * be delivered.
 					 */
 					control = ctl;
 					goto found_one;
 				}
 				ctl = TAILQ_NEXT(ctl, next);
 			}
 		}
 		/*
 		 * if we reach here, not suitable replacement is available
 		 * <or> fragment interleave is NOT on. So stuff the sb_cc
 		 * into the our held count, and its time to sleep again.
 		 */
 		held_length = SCTP_SBAVAIL(&so->so_rcv);
 		control->held_length = SCTP_SBAVAIL(&so->so_rcv);
 		goto restart;
 	}
 	/* Clear the held length since there is something to read */
 	control->held_length = 0;
 found_one:
 	/*
 	 * If we reach here, control has a some data for us to read off.
 	 * Note that stcb COULD be NULL.
 	 */
 	if (hold_rlock == 0) {
 		hold_rlock = 1;
 		SCTP_INP_READ_LOCK(inp);
 	}
 	control->some_taken++;
 	stcb = control->stcb;
 	if (stcb) {
 		if ((control->do_not_ref_stcb == 0) &&
 		    (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED)) {
 			if (freecnt_applied == 0)
 				stcb = NULL;
 		} else if (control->do_not_ref_stcb == 0) {
 			/* you can't free it on me please */
 			/*
 			 * The lock on the socket buffer protects us so the
 			 * free code will stop. But since we used the
 			 * socketbuf lock and the sender uses the tcb_lock
 			 * to increment, we need to use the atomic add to
 			 * the refcnt
 			 */
 			if (freecnt_applied) {
 #ifdef INVARIANTS
 				panic("refcnt already incremented");
 #else
 				SCTP_PRINTF("refcnt already incremented?\n");
 #endif
 			} else {
 				atomic_add_int(&stcb->asoc.refcnt, 1);
 				freecnt_applied = 1;
 			}
 			/*
 			 * Setup to remember how much we have not yet told
 			 * the peer our rwnd has opened up. Note we grab the
 			 * value from the tcb from last time. Note too that
 			 * sack sending clears this when a sack is sent,
 			 * which is fine. Once we hit the rwnd_req, we then
 			 * will go to the sctp_user_rcvd() that will not
 			 * lock until it KNOWs it MUST send a WUP-SACK.
 			 */
 			freed_so_far = (uint32_t)stcb->freed_by_sorcv_sincelast;
 			stcb->freed_by_sorcv_sincelast = 0;
 		}
 	}
 	if (stcb &&
 	    ((control->spec_flags & M_NOTIFICATION) == 0) &&
 	    control->do_not_ref_stcb == 0) {
 		stcb->asoc.strmin[control->sinfo_stream].delivery_started = 1;
 	}
 
 	/* First lets get off the sinfo and sockaddr info */
 	if ((sinfo != NULL) && (filling_sinfo != 0)) {
 		sinfo->sinfo_stream = control->sinfo_stream;
 		sinfo->sinfo_ssn = (uint16_t)control->mid;
 		sinfo->sinfo_flags = control->sinfo_flags;
 		sinfo->sinfo_ppid = control->sinfo_ppid;
 		sinfo->sinfo_context = control->sinfo_context;
 		sinfo->sinfo_timetolive = control->sinfo_timetolive;
 		sinfo->sinfo_tsn = control->sinfo_tsn;
 		sinfo->sinfo_cumtsn = control->sinfo_cumtsn;
 		sinfo->sinfo_assoc_id = control->sinfo_assoc_id;
 		nxt = TAILQ_NEXT(control, next);
 		if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
 		    sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) {
 			struct sctp_extrcvinfo *s_extra;
 
 			s_extra = (struct sctp_extrcvinfo *)sinfo;
 			if ((nxt) &&
 			    (nxt->length)) {
 				s_extra->serinfo_next_flags = SCTP_NEXT_MSG_AVAIL;
 				if (nxt->sinfo_flags & SCTP_UNORDERED) {
 					s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_UNORDERED;
 				}
 				if (nxt->spec_flags & M_NOTIFICATION) {
 					s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_NOTIFICATION;
 				}
 				s_extra->serinfo_next_aid = nxt->sinfo_assoc_id;
 				s_extra->serinfo_next_length = nxt->length;
 				s_extra->serinfo_next_ppid = nxt->sinfo_ppid;
 				s_extra->serinfo_next_stream = nxt->sinfo_stream;
 				if (nxt->tail_mbuf != NULL) {
 					if (nxt->end_added) {
 						s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_ISCOMPLETE;
 					}
 				}
 			} else {
 				/*
 				 * we explicitly 0 this, since the memcpy
 				 * got some other things beyond the older
 				 * sinfo_ that is on the control's structure
 				 * :-D
 				 */
 				nxt = NULL;
 				s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG;
 				s_extra->serinfo_next_aid = 0;
 				s_extra->serinfo_next_length = 0;
 				s_extra->serinfo_next_ppid = 0;
 				s_extra->serinfo_next_stream = 0;
 			}
 		}
 		/*
 		 * update off the real current cum-ack, if we have an stcb.
 		 */
 		if ((control->do_not_ref_stcb == 0) && stcb)
 			sinfo->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
 		/*
 		 * mask off the high bits, we keep the actual chunk bits in
 		 * there.
 		 */
 		sinfo->sinfo_flags &= 0x00ff;
 		if ((control->sinfo_flags >> 8) & SCTP_DATA_UNORDERED) {
 			sinfo->sinfo_flags |= SCTP_UNORDERED;
 		}
 	}
 #ifdef SCTP_ASOCLOG_OF_TSNS
 	{
 		int index, newindex;
 		struct sctp_pcbtsn_rlog *entry;
 
 		do {
 			index = inp->readlog_index;
 			newindex = index + 1;
 			if (newindex >= SCTP_READ_LOG_SIZE) {
 				newindex = 0;
 			}
 		} while (atomic_cmpset_int(&inp->readlog_index, index, newindex) == 0);
 		entry = &inp->readlog[index];
 		entry->vtag = control->sinfo_assoc_id;
 		entry->strm = control->sinfo_stream;
 		entry->seq = (uint16_t)control->mid;
 		entry->sz = control->length;
 		entry->flgs = control->sinfo_flags;
 	}
 #endif
 	if ((fromlen > 0) && (from != NULL)) {
 		union sctp_sockstore store;
 		size_t len;
 
 		switch (control->whoFrom->ro._l_addr.sa.sa_family) {
 #ifdef INET6
 		case AF_INET6:
 			len = sizeof(struct sockaddr_in6);
 			store.sin6 = control->whoFrom->ro._l_addr.sin6;
 			store.sin6.sin6_port = control->port_from;
 			break;
 #endif
 #ifdef INET
 		case AF_INET:
 #ifdef INET6
 			if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
 				len = sizeof(struct sockaddr_in6);
 				in6_sin_2_v4mapsin6(&control->whoFrom->ro._l_addr.sin,
 				    &store.sin6);
 				store.sin6.sin6_port = control->port_from;
 			} else {
 				len = sizeof(struct sockaddr_in);
 				store.sin = control->whoFrom->ro._l_addr.sin;
 				store.sin.sin_port = control->port_from;
 			}
 #else
 			len = sizeof(struct sockaddr_in);
 			store.sin = control->whoFrom->ro._l_addr.sin;
 			store.sin.sin_port = control->port_from;
 #endif
 			break;
 #endif
 		default:
 			len = 0;
 			break;
 		}
 		memcpy(from, &store, min((size_t)fromlen, len));
 #ifdef INET6
 		{
 			struct sockaddr_in6 lsa6, *from6;
 
 			from6 = (struct sockaddr_in6 *)from;
 			sctp_recover_scope_mac(from6, (&lsa6));
 		}
 #endif
 	}
 	if (hold_rlock) {
 		SCTP_INP_READ_UNLOCK(inp);
 		hold_rlock = 0;
 	}
 	if (hold_sblock) {
 		SOCKBUF_UNLOCK(&so->so_rcv);
 		hold_sblock = 0;
 	}
 	/* now copy out what data we can */
 	if (mp == NULL) {
 		/* copy out each mbuf in the chain up to length */
 get_more_data:
 		m = control->data;
 		while (m) {
 			/* Move out all we can */
 			cp_len = uio->uio_resid;
 			my_len = SCTP_BUF_LEN(m);
 			if (cp_len > my_len) {
 				/* not enough in this buf */
 				cp_len = my_len;
 			}
 			if (hold_rlock) {
 				SCTP_INP_READ_UNLOCK(inp);
 				hold_rlock = 0;
 			}
 			if (cp_len > 0)
 				error = uiomove(mtod(m, char *), (int)cp_len, uio);
 			/* re-read */
 			if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
 				goto release;
 			}
 
 			if ((control->do_not_ref_stcb == 0) && stcb &&
 			    stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
 				no_rcv_needed = 1;
 			}
 			if (error) {
 				/* error we are out of here */
 				goto release;
 			}
 			SCTP_INP_READ_LOCK(inp);
 			hold_rlock = 1;
 			if (cp_len == SCTP_BUF_LEN(m)) {
 				if ((SCTP_BUF_NEXT(m) == NULL) &&
 				    (control->end_added)) {
 					out_flags |= MSG_EOR;
 					if ((control->do_not_ref_stcb == 0) &&
 					    (control->stcb != NULL) &&
 					    ((control->spec_flags & M_NOTIFICATION) == 0))
 						control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
 				}
 				if (control->spec_flags & M_NOTIFICATION) {
 					out_flags |= MSG_NOTIFICATION;
 				}
 				/* we ate up the mbuf */
 				if (in_flags & MSG_PEEK) {
 					/* just looking */
 					m = SCTP_BUF_NEXT(m);
 					copied_so_far += cp_len;
 				} else {
 					/* dispose of the mbuf */
 					if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
 						sctp_sblog(&so->so_rcv,
 						    control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
 					}
 					sctp_sbfree(control, stcb, &so->so_rcv, m);
 					if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
 						sctp_sblog(&so->so_rcv,
 						    control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
 					}
 					copied_so_far += cp_len;
 					freed_so_far += (uint32_t)cp_len;
 					freed_so_far += MSIZE;
 					atomic_subtract_int(&control->length, (int)cp_len);
 					control->data = sctp_m_free(m);
 					m = control->data;
 					/*
 					 * been through it all, must hold sb
 					 * lock ok to null tail
 					 */
 					if (control->data == NULL) {
 #ifdef INVARIANTS
 						if ((control->end_added == 0) ||
 						    (TAILQ_NEXT(control, next) == NULL)) {
 							/*
 							 * If the end is not
 							 * added, OR the
 							 * next is NOT null
 							 * we MUST have the
 							 * lock.
 							 */
 							if (mtx_owned(&inp->inp_rdata_mtx) == 0) {
 								panic("Hmm we don't own the lock?");
 							}
 						}
 #endif
 						control->tail_mbuf = NULL;
 #ifdef INVARIANTS
 						if ((control->end_added) && ((out_flags & MSG_EOR) == 0)) {
 							panic("end_added, nothing left and no MSG_EOR");
 						}
 #endif
 					}
 				}
 			} else {
 				/* Do we need to trim the mbuf? */
 				if (control->spec_flags & M_NOTIFICATION) {
 					out_flags |= MSG_NOTIFICATION;
 				}
 				if ((in_flags & MSG_PEEK) == 0) {
 					SCTP_BUF_RESV_UF(m, cp_len);
 					SCTP_BUF_LEN(m) -= (int)cp_len;
 					if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
 						sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, (int)cp_len);
 					}
 					SCTP_SB_DECR(&so->so_rcv, cp_len);
 					if ((control->do_not_ref_stcb == 0) &&
 					    stcb) {
 						atomic_subtract_int(&stcb->asoc.sb_cc, (int)cp_len);
 					}
 					copied_so_far += cp_len;
 					freed_so_far += (uint32_t)cp_len;
 					freed_so_far += MSIZE;
 					if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
 						sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb,
 						    SCTP_LOG_SBRESULT, 0);
 					}
 					atomic_subtract_int(&control->length, (int)cp_len);
 				} else {
 					copied_so_far += cp_len;
 				}
 			}
 			if ((out_flags & MSG_EOR) || (uio->uio_resid == 0)) {
 				break;
 			}
 			if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
 			    (control->do_not_ref_stcb == 0) &&
 			    (freed_so_far >= rwnd_req)) {
 				sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
 			}
 		}		/* end while(m) */
 		/*
 		 * At this point we have looked at it all and we either have
 		 * a MSG_EOR/or read all the user wants... <OR>
 		 * control->length == 0.
 		 */
 		if ((out_flags & MSG_EOR) && ((in_flags & MSG_PEEK) == 0)) {
 			/* we are done with this control */
 			if (control->length == 0) {
 				if (control->data) {
 #ifdef INVARIANTS
 					panic("control->data not null at read eor?");
 #else
 					SCTP_PRINTF("Strange, data left in the control buffer .. invariants would panic?\n");
 					sctp_m_freem(control->data);
 					control->data = NULL;
 #endif
 				}
 		done_with_control:
 				if (hold_rlock == 0) {
 					SCTP_INP_READ_LOCK(inp);
 					hold_rlock = 1;
 				}
 				TAILQ_REMOVE(&inp->read_queue, control, next);
 				/* Add back any hidden data */
 				if (control->held_length) {
 					held_length = 0;
 					control->held_length = 0;
 					wakeup_read_socket = 1;
 				}
 				if (control->aux_data) {
 					sctp_m_free(control->aux_data);
 					control->aux_data = NULL;
 				}
 				no_rcv_needed = control->do_not_ref_stcb;
 				sctp_free_remote_addr(control->whoFrom);
 				control->data = NULL;
 #ifdef INVARIANTS
 				if (control->on_strm_q) {
 					panic("About to free ctl:%p so:%p and its in %d",
 					    control, so, control->on_strm_q);
 				}
 #endif
 				sctp_free_a_readq(stcb, control);
 				control = NULL;
 				if ((freed_so_far >= rwnd_req) &&
 				    (no_rcv_needed == 0))
 					sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
 
 			} else {
 				/*
 				 * The user did not read all of this
 				 * message, turn off the returned MSG_EOR
 				 * since we are leaving more behind on the
 				 * control to read.
 				 */
 #ifdef INVARIANTS
 				if (control->end_added &&
 				    (control->data == NULL) &&
 				    (control->tail_mbuf == NULL)) {
 					panic("Gak, control->length is corrupt?");
 				}
 #endif
 				no_rcv_needed = control->do_not_ref_stcb;
 				out_flags &= ~MSG_EOR;
 			}
 		}
 		if (out_flags & MSG_EOR) {
 			goto release;
 		}
 		if ((uio->uio_resid == 0) ||
 		    ((in_eeor_mode) &&
 		    (copied_so_far >= max(so->so_rcv.sb_lowat, 1)))) {
 			goto release;
 		}
 		/*
 		 * If I hit here the receiver wants more and this message is
 		 * NOT done (pd-api). So two questions. Can we block? if not
 		 * we are done. Did the user NOT set MSG_WAITALL?
 		 */
 		if (block_allowed == 0) {
 			goto release;
 		}
 		/*
 		 * We need to wait for more data a few things: - We don't
 		 * release the I/O lock so we don't get someone else
 		 * reading. - We must be sure to account for the case where
 		 * what is added is NOT to our control when we wakeup.
 		 */
 
 		/*
 		 * Do we need to tell the transport a rwnd update might be
 		 * needed before we go to sleep?
 		 */
 		if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
 		    ((freed_so_far >= rwnd_req) &&
 		    (control->do_not_ref_stcb == 0) &&
 		    (no_rcv_needed == 0))) {
 			sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
 		}
 wait_some_more:
 		if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {
 			goto release;
 		}
 
 		if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)
 			goto release;
 
 		if (hold_rlock == 1) {
 			SCTP_INP_READ_UNLOCK(inp);
 			hold_rlock = 0;
 		}
 		if (hold_sblock == 0) {
 			SOCKBUF_LOCK(&so->so_rcv);
 			hold_sblock = 1;
 		}
 		if ((copied_so_far) && (control->length == 0) &&
 		    (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE))) {
 			goto release;
 		}
 		if (SCTP_SBAVAIL(&so->so_rcv) <= control->held_length) {
 			error = sbwait(so, SO_RCV);
 			if (error) {
 				goto release;
 			}
 			control->held_length = 0;
 		}
 		if (hold_sblock) {
 			SOCKBUF_UNLOCK(&so->so_rcv);
 			hold_sblock = 0;
 		}
 		if (control->length == 0) {
 			/* still nothing here */
 			if (control->end_added == 1) {
 				/* he aborted, or is done i.e.did a shutdown */
 				out_flags |= MSG_EOR;
 				if (control->pdapi_aborted) {
 					if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
 						control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
 
 					out_flags |= MSG_TRUNC;
 				} else {
 					if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
 						control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
 				}
 				goto done_with_control;
 			}
 			if (SCTP_SBAVAIL(&so->so_rcv) > held_length) {
 				control->held_length = SCTP_SBAVAIL(&so->so_rcv);
 				held_length = 0;
 			}
 			goto wait_some_more;
 		} else if (control->data == NULL) {
 			/*
 			 * we must re-sync since data is probably being
 			 * added
 			 */
 			SCTP_INP_READ_LOCK(inp);
 			if ((control->length > 0) && (control->data == NULL)) {
 				/*
 				 * big trouble.. we have the lock and its
 				 * corrupt?
 				 */
 #ifdef INVARIANTS
 				panic("Impossible data==NULL length !=0");
 #endif
 				out_flags |= MSG_EOR;
 				out_flags |= MSG_TRUNC;
 				control->length = 0;
 				SCTP_INP_READ_UNLOCK(inp);
 				goto done_with_control;
 			}
 			SCTP_INP_READ_UNLOCK(inp);
 			/* We will fall around to get more data */
 		}
 		goto get_more_data;
 	} else {
 		/*-
 		 * Give caller back the mbuf chain,
 		 * store in uio_resid the length
 		 */
 		wakeup_read_socket = 0;
 		if ((control->end_added == 0) ||
 		    (TAILQ_NEXT(control, next) == NULL)) {
 			/* Need to get rlock */
 			if (hold_rlock == 0) {
 				SCTP_INP_READ_LOCK(inp);
 				hold_rlock = 1;
 			}
 		}
 		if (control->end_added) {
 			out_flags |= MSG_EOR;
 			if ((control->do_not_ref_stcb == 0) &&
 			    (control->stcb != NULL) &&
 			    ((control->spec_flags & M_NOTIFICATION) == 0))
 				control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
 		}
 		if (control->spec_flags & M_NOTIFICATION) {
 			out_flags |= MSG_NOTIFICATION;
 		}
 		uio->uio_resid = control->length;
 		*mp = control->data;
 		m = control->data;
 		while (m) {
 			if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
 				sctp_sblog(&so->so_rcv,
 				    control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
 			}
 			sctp_sbfree(control, stcb, &so->so_rcv, m);
 			freed_so_far += (uint32_t)SCTP_BUF_LEN(m);
 			freed_so_far += MSIZE;
 			if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
 				sctp_sblog(&so->so_rcv,
 				    control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
 			}
 			m = SCTP_BUF_NEXT(m);
 		}
 		control->data = control->tail_mbuf = NULL;
 		control->length = 0;
 		if (out_flags & MSG_EOR) {
 			/* Done with this control */
 			goto done_with_control;
 		}
 	}
 release:
 	if (hold_rlock == 1) {
 		SCTP_INP_READ_UNLOCK(inp);
 		hold_rlock = 0;
 	}
 	if (hold_sblock == 1) {
 		SOCKBUF_UNLOCK(&so->so_rcv);
 		hold_sblock = 0;
 	}
 
 	SOCK_IO_RECV_UNLOCK(so);
 	sockbuf_lock = 0;
 
 release_unlocked:
 	if (hold_sblock) {
 		SOCKBUF_UNLOCK(&so->so_rcv);
 		hold_sblock = 0;
 	}
 	if ((stcb) && (in_flags & MSG_PEEK) == 0) {
 		if ((freed_so_far >= rwnd_req) &&
 		    (control && (control->do_not_ref_stcb == 0)) &&
 		    (no_rcv_needed == 0))
 			sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
 	}
 out:
 	if (msg_flags) {
 		*msg_flags = out_flags;
 	}
 	if (((out_flags & MSG_EOR) == 0) &&
 	    ((in_flags & MSG_PEEK) == 0) &&
 	    (sinfo) &&
 	    (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
 	    sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO))) {
 		struct sctp_extrcvinfo *s_extra;
 
 		s_extra = (struct sctp_extrcvinfo *)sinfo;
 		s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG;
 	}
 	if (hold_rlock == 1) {
 		SCTP_INP_READ_UNLOCK(inp);
 	}
 	if (hold_sblock) {
 		SOCKBUF_UNLOCK(&so->so_rcv);
 	}
 	if (sockbuf_lock) {
 		SOCK_IO_RECV_UNLOCK(so);
 	}
 
 	if (freecnt_applied) {
 		/*
 		 * The lock on the socket buffer protects us so the free
 		 * code will stop. But since we used the socketbuf lock and
 		 * the sender uses the tcb_lock to increment, we need to use
 		 * the atomic add to the refcnt.
 		 */
 		if (stcb == NULL) {
 #ifdef INVARIANTS
 			panic("stcb for refcnt has gone NULL?");
 			goto stage_left;
 #else
 			goto stage_left;
 #endif
 		}
 		/* Save the value back for next time */
 		stcb->freed_by_sorcv_sincelast = freed_so_far;
 		atomic_subtract_int(&stcb->asoc.refcnt, 1);
 	}
 	if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
 		if (stcb) {
 			sctp_misc_ints(SCTP_SORECV_DONE,
 			    freed_so_far,
 			    (uint32_t)((uio) ? (slen - uio->uio_resid) : slen),
 			    stcb->asoc.my_rwnd,
 			    SCTP_SBAVAIL(&so->so_rcv));
 		} else {
 			sctp_misc_ints(SCTP_SORECV_DONE,
 			    freed_so_far,
 			    (uint32_t)((uio) ? (slen - uio->uio_resid) : slen),
 			    0,
 			    SCTP_SBAVAIL(&so->so_rcv));
 		}
 	}
 stage_left:
 	if (wakeup_read_socket) {
 		sctp_sorwakeup(inp, so);
 	}
 	return (error);
 }
 
 #ifdef SCTP_MBUF_LOGGING
 struct mbuf *
 sctp_m_free(struct mbuf *m)
 {
 	if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
 		sctp_log_mb(m, SCTP_MBUF_IFREE);
 	}
 	return (m_free(m));
 }
 
 void
 sctp_m_freem(struct mbuf *mb)
 {
 	while (mb != NULL)
 		mb = sctp_m_free(mb);
 }
 
 #endif
 
 int
 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id)
 {
 	/*
 	 * Given a local address. For all associations that holds the
 	 * address, request a peer-set-primary.
 	 */
 	struct sctp_ifa *ifa;
 	struct sctp_laddr *wi;
 
 	ifa = sctp_find_ifa_by_addr(sa, vrf_id, SCTP_ADDR_NOT_LOCKED);
 	if (ifa == NULL) {
 		SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EADDRNOTAVAIL);
 		return (EADDRNOTAVAIL);
 	}
 	/*
 	 * Now that we have the ifa we must awaken the iterator with this
 	 * message.
 	 */
 	wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
 	if (wi == NULL) {
 		SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
 		return (ENOMEM);
 	}
 	/* Now incr the count and int wi structure */
 	SCTP_INCR_LADDR_COUNT();
 	memset(wi, 0, sizeof(*wi));
 	(void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
 	wi->ifa = ifa;
 	wi->action = SCTP_SET_PRIM_ADDR;
 	atomic_add_int(&ifa->refcount, 1);
 
 	/* Now add it to the work queue */
 	SCTP_WQ_ADDR_LOCK();
 	/*
 	 * Should this really be a tailq? As it is we will process the
 	 * newest first :-0
 	 */
 	LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
 	sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
 	    (struct sctp_inpcb *)NULL,
 	    (struct sctp_tcb *)NULL,
 	    (struct sctp_nets *)NULL);
 	SCTP_WQ_ADDR_UNLOCK();
 	return (0);
 }
 
 int
 sctp_soreceive(struct socket *so,
     struct sockaddr **psa,
     struct uio *uio,
     struct mbuf **mp0,
     struct mbuf **controlp,
     int *flagsp)
 {
 	int error, fromlen;
 	uint8_t sockbuf[256];
 	struct sockaddr *from;
 	struct sctp_extrcvinfo sinfo;
 	int filling_sinfo = 1;
 	int flags;
 	struct sctp_inpcb *inp;
 
 	inp = (struct sctp_inpcb *)so->so_pcb;
 	/* pickup the assoc we are reading from */
 	if (inp == NULL) {
 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
 		return (EINVAL);
 	}
 	if ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT) &&
 	    sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVRCVINFO) &&
 	    sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) ||
 	    (controlp == NULL)) {
 		/* user does not want the sndrcv ctl */
 		filling_sinfo = 0;
 	}
 	if (psa) {
 		from = (struct sockaddr *)sockbuf;
 		fromlen = sizeof(sockbuf);
 		from->sa_len = 0;
 	} else {
 		from = NULL;
 		fromlen = 0;
 	}
 
 	if (filling_sinfo) {
 		memset(&sinfo, 0, sizeof(struct sctp_extrcvinfo));
 	}
 	if (flagsp != NULL) {
 		flags = *flagsp;
 	} else {
 		flags = 0;
 	}
 	error = sctp_sorecvmsg(so, uio, mp0, from, fromlen, &flags,
 	    (struct sctp_sndrcvinfo *)&sinfo, filling_sinfo);
 	if (flagsp != NULL) {
 		*flagsp = flags;
 	}
 	if (controlp != NULL) {
 		/* copy back the sinfo in a CMSG format */
 		if (filling_sinfo && ((flags & MSG_NOTIFICATION) == 0)) {
 			*controlp = sctp_build_ctl_nchunk(inp,
 			    (struct sctp_sndrcvinfo *)&sinfo);
 		} else {
 			*controlp = NULL;
 		}
 	}
 	if (psa) {
 		/* copy back the address info */
 		if (from && from->sa_len) {
 			*psa = sodupsockaddr(from, M_NOWAIT);
 		} else {
 			*psa = NULL;
 		}
 	}
 	return (error);
 }
 
 int
 sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr,
     int totaddr, int *error)
 {
 	int added = 0;
 	int i;
 	struct sctp_inpcb *inp;
 	struct sockaddr *sa;
 	size_t incr = 0;
 #ifdef INET
 	struct sockaddr_in *sin;
 #endif
 #ifdef INET6
 	struct sockaddr_in6 *sin6;
 #endif
 
 	sa = addr;
 	inp = stcb->sctp_ep;
 	*error = 0;
 	for (i = 0; i < totaddr; i++) {
 		switch (sa->sa_family) {
 #ifdef INET
 		case AF_INET:
 			incr = sizeof(struct sockaddr_in);
 			sin = (struct sockaddr_in *)sa;
 			if ((sin->sin_addr.s_addr == INADDR_ANY) ||
 			    (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
 			    IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
 				SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
 				(void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
 				    SCTP_FROM_SCTPUTIL + SCTP_LOC_7);
 				*error = EINVAL;
 				goto out_now;
 			}
 			if (sctp_add_remote_addr(stcb, sa, NULL, stcb->asoc.port,
 			    SCTP_DONOT_SETSCOPE,
 			    SCTP_ADDR_IS_CONFIRMED)) {
 				/* assoc gone no un-lock */
 				SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
 				(void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
 				    SCTP_FROM_SCTPUTIL + SCTP_LOC_8);
 				*error = ENOBUFS;
 				goto out_now;
 			}
 			added++;
 			break;
 #endif
 #ifdef INET6
 		case AF_INET6:
 			incr = sizeof(struct sockaddr_in6);
 			sin6 = (struct sockaddr_in6 *)sa;
 			if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
 			    IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
 				SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
 				(void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
 				    SCTP_FROM_SCTPUTIL + SCTP_LOC_9);
 				*error = EINVAL;
 				goto out_now;
 			}
 			if (sctp_add_remote_addr(stcb, sa, NULL, stcb->asoc.port,
 			    SCTP_DONOT_SETSCOPE,
 			    SCTP_ADDR_IS_CONFIRMED)) {
 				/* assoc gone no un-lock */
 				SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
 				(void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
 				    SCTP_FROM_SCTPUTIL + SCTP_LOC_10);
 				*error = ENOBUFS;
 				goto out_now;
 			}
 			added++;
 			break;
 #endif
 		default:
 			break;
 		}
 		sa = (struct sockaddr *)((caddr_t)sa + incr);
 	}
 out_now:
 	return (added);
 }
 
 int
 sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr,
     unsigned int totaddr,
     unsigned int *num_v4, unsigned int *num_v6,
     unsigned int limit)
 {
 	struct sockaddr *sa;
 	struct sctp_tcb *stcb;
 	unsigned int incr, at, i;
 
 	at = 0;
 	sa = addr;
 	*num_v6 = *num_v4 = 0;
 	/* account and validate addresses */
 	if (totaddr == 0) {
 		return (EINVAL);
 	}
 	for (i = 0; i < totaddr; i++) {
 		if (at + sizeof(struct sockaddr) > limit) {
 			return (EINVAL);
 		}
 		switch (sa->sa_family) {
 #ifdef INET
 		case AF_INET:
 			incr = (unsigned int)sizeof(struct sockaddr_in);
 			if (sa->sa_len != incr) {
 				return (EINVAL);
 			}
 			(*num_v4) += 1;
 			break;
 #endif
 #ifdef INET6
 		case AF_INET6:
 			{
 				struct sockaddr_in6 *sin6;
 
 				incr = (unsigned int)sizeof(struct sockaddr_in6);
 				if (sa->sa_len != incr) {
 					return (EINVAL);
 				}
 				sin6 = (struct sockaddr_in6 *)sa;
 				if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
 					/* Must be non-mapped for connectx */
 					return (EINVAL);
 				}
 				(*num_v6) += 1;
 				break;
 			}
 #endif
 		default:
 			return (EINVAL);
 		}
 		if ((at + incr) > limit) {
 			return (EINVAL);
 		}
 		SCTP_INP_INCR_REF(inp);
 		stcb = sctp_findassociation_ep_addr(&inp, sa, NULL, NULL, NULL);
 		if (stcb != NULL) {
 			SCTP_TCB_UNLOCK(stcb);
 			return (EALREADY);
 		} else {
 			SCTP_INP_DECR_REF(inp);
 		}
 		at += incr;
 		sa = (struct sockaddr *)((caddr_t)sa + incr);
 	}
 	return (0);
 }
 
 /*
  * sctp_bindx(ADD) for one address.
  * assumes all arguments are valid/checked by caller.
  */
 void
 sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp,
     struct sockaddr *sa, uint32_t vrf_id, int *error,
     void *p)
 {
 #if defined(INET) && defined(INET6)
 	struct sockaddr_in sin;
 #endif
 #ifdef INET6
 	struct sockaddr_in6 *sin6;
 #endif
 #ifdef INET
 	struct sockaddr_in *sinp;
 #endif
 	struct sockaddr *addr_to_use;
 	struct sctp_inpcb *lep;
 	uint16_t port;
 
 	/* see if we're bound all already! */
 	if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
 		*error = EINVAL;
 		return;
 	}
 	switch (sa->sa_family) {
 #ifdef INET6
 	case AF_INET6:
 		if (sa->sa_len != sizeof(struct sockaddr_in6)) {
 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
 			*error = EINVAL;
 			return;
 		}
 		if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
 			/* can only bind v6 on PF_INET6 sockets */
 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
 			*error = EINVAL;
 			return;
 		}
 		sin6 = (struct sockaddr_in6 *)sa;
 		port = sin6->sin6_port;
 #ifdef INET
 		if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
 			if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
 			    SCTP_IPV6_V6ONLY(inp)) {
 				/* can't bind v4-mapped on PF_INET sockets */
 				SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
 				*error = EINVAL;
 				return;
 			}
 			in6_sin6_2_sin(&sin, sin6);
 			addr_to_use = (struct sockaddr *)&sin;
 		} else {
 			addr_to_use = sa;
 		}
 #else
 		addr_to_use = sa;
 #endif
 		break;
 #endif
 #ifdef INET
 	case AF_INET:
 		if (sa->sa_len != sizeof(struct sockaddr_in)) {
 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
 			*error = EINVAL;
 			return;
 		}
 		if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
 		    SCTP_IPV6_V6ONLY(inp)) {
 			/* can't bind v4 on PF_INET sockets */
 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
 			*error = EINVAL;
 			return;
 		}
 		sinp = (struct sockaddr_in *)sa;
 		port = sinp->sin_port;
 		addr_to_use = sa;
 		break;
 #endif
 	default:
 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
 		*error = EINVAL;
 		return;
 	}
 	if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
 		if (p == NULL) {
 			/* Can't get proc for Net/Open BSD */
 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
 			*error = EINVAL;
 			return;
 		}
 		*error = sctp_inpcb_bind(so, addr_to_use, NULL, p);
 		return;
 	}
 	/* Validate the incoming port. */
 	if ((port != 0) && (port != inp->sctp_lport)) {
 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
 		*error = EINVAL;
 		return;
 	}
 	lep = sctp_pcb_findep(addr_to_use, 1, 0, vrf_id);
 	if (lep == NULL) {
 		/* add the address */
 		*error = sctp_addr_mgmt_ep_sa(inp, addr_to_use,
 		    SCTP_ADD_IP_ADDRESS, vrf_id);
 	} else {
 		if (lep != inp) {
 			*error = EADDRINUSE;
 		}
 		SCTP_INP_DECR_REF(lep);
 	}
 }
 
 /*
  * sctp_bindx(DELETE) for one address.
  * assumes all arguments are valid/checked by caller.
  */
 void
 sctp_bindx_delete_address(struct sctp_inpcb *inp,
     struct sockaddr *sa, uint32_t vrf_id, int *error)
 {
 	struct sockaddr *addr_to_use;
 #if defined(INET) && defined(INET6)
 	struct sockaddr_in6 *sin6;
 	struct sockaddr_in sin;
 #endif
 
 	/* see if we're bound all already! */
 	if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
 		*error = EINVAL;
 		return;
 	}
 	switch (sa->sa_family) {
 #ifdef INET6
 	case AF_INET6:
 		if (sa->sa_len != sizeof(struct sockaddr_in6)) {
 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
 			*error = EINVAL;
 			return;
 		}
 		if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
 			/* can only bind v6 on PF_INET6 sockets */
 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
 			*error = EINVAL;
 			return;
 		}
 #ifdef INET
 		sin6 = (struct sockaddr_in6 *)sa;
 		if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
 			if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
 			    SCTP_IPV6_V6ONLY(inp)) {
 				/* can't bind mapped-v4 on PF_INET sockets */
 				SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
 				*error = EINVAL;
 				return;
 			}
 			in6_sin6_2_sin(&sin, sin6);
 			addr_to_use = (struct sockaddr *)&sin;
 		} else {
 			addr_to_use = sa;
 		}
 #else
 		addr_to_use = sa;
 #endif
 		break;
 #endif
 #ifdef INET
 	case AF_INET:
 		if (sa->sa_len != sizeof(struct sockaddr_in)) {
 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
 			*error = EINVAL;
 			return;
 		}
 		if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
 		    SCTP_IPV6_V6ONLY(inp)) {
 			/* can't bind v4 on PF_INET sockets */
 			SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
 			*error = EINVAL;
 			return;
 		}
 		addr_to_use = sa;
 		break;
 #endif
 	default:
 		SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
 		*error = EINVAL;
 		return;
 	}
 	/* No lock required mgmt_ep_sa does its own locking. */
 	*error = sctp_addr_mgmt_ep_sa(inp, addr_to_use, SCTP_DEL_IP_ADDRESS,
 	    vrf_id);
 }
 
 /*
  * returns the valid local address count for an assoc, taking into account
  * all scoping rules
  */
 int
 sctp_local_addr_count(struct sctp_tcb *stcb)
 {
 	int loopback_scope;
 #if defined(INET)
 	int ipv4_local_scope, ipv4_addr_legal;
 #endif
 #if defined(INET6)
 	int local_scope, site_scope, ipv6_addr_legal;
 #endif
 	struct sctp_vrf *vrf;
 	struct sctp_ifn *sctp_ifn;
 	struct sctp_ifa *sctp_ifa;
 	int count = 0;
 
 	/* Turn on all the appropriate scopes */
 	loopback_scope = stcb->asoc.scope.loopback_scope;
 #if defined(INET)
 	ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
 	ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
 #endif
 #if defined(INET6)
 	local_scope = stcb->asoc.scope.local_scope;
 	site_scope = stcb->asoc.scope.site_scope;
 	ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
 #endif
 	SCTP_IPI_ADDR_RLOCK();
 	vrf = sctp_find_vrf(stcb->asoc.vrf_id);
 	if (vrf == NULL) {
 		/* no vrf, no addresses */
 		SCTP_IPI_ADDR_RUNLOCK();
 		return (0);
 	}
 
 	if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
 		/*
 		 * bound all case: go through all ifns on the vrf
 		 */
 		LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
 			if ((loopback_scope == 0) &&
 			    SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
 				continue;
 			}
 			LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
 				if (sctp_is_addr_restricted(stcb, sctp_ifa))
 					continue;
 				switch (sctp_ifa->address.sa.sa_family) {
 #ifdef INET
 				case AF_INET:
 					if (ipv4_addr_legal) {
 						struct sockaddr_in *sin;
 
 						sin = &sctp_ifa->address.sin;
 						if (sin->sin_addr.s_addr == 0) {
 							/*
 							 * skip unspecified
 							 * addrs
 							 */
 							continue;
 						}
 						if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
 						    &sin->sin_addr) != 0) {
 							continue;
 						}
 						if ((ipv4_local_scope == 0) &&
 						    (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
 							continue;
 						}
 						/* count this one */
 						count++;
 					} else {
 						continue;
 					}
 					break;
 #endif
 #ifdef INET6
 				case AF_INET6:
 					if (ipv6_addr_legal) {
 						struct sockaddr_in6 *sin6;
 
 						sin6 = &sctp_ifa->address.sin6;
 						if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
 							continue;
 						}
 						if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
 						    &sin6->sin6_addr) != 0) {
 							continue;
 						}
 						if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
 							if (local_scope == 0)
 								continue;
 							if (sin6->sin6_scope_id == 0) {
 								if (sa6_recoverscope(sin6) != 0)
 									/*
 									 *
 									 * bad
 									 * link
 									 *
 									 * local
 									 *
 									 * address
 									 */
 									continue;
 							}
 						}
 						if ((site_scope == 0) &&
 						    (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
 							continue;
 						}
 						/* count this one */
 						count++;
 					}
 					break;
 #endif
 				default:
 					/* TSNH */
 					break;
 				}
 			}
 		}
 	} else {
 		/*
 		 * subset bound case
 		 */
 		struct sctp_laddr *laddr;
 
 		LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list,
 		    sctp_nxt_addr) {
 			if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
 				continue;
 			}
 			/* count this one */
 			count++;
 		}
 	}
 	SCTP_IPI_ADDR_RUNLOCK();
 	return (count);
 }
 
 #if defined(SCTP_LOCAL_TRACE_BUF)
 
 void
 sctp_log_trace(uint32_t subsys, const char *str SCTP_UNUSED, uint32_t a, uint32_t b, uint32_t c, uint32_t d, uint32_t e, uint32_t f)
 {
 	uint32_t saveindex, newindex;
 
 	do {
 		saveindex = SCTP_BASE_SYSCTL(sctp_log).index;
 		if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
 			newindex = 1;
 		} else {
 			newindex = saveindex + 1;
 		}
 	} while (atomic_cmpset_int(&SCTP_BASE_SYSCTL(sctp_log).index, saveindex, newindex) == 0);
 	if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
 		saveindex = 0;
 	}
 	SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].timestamp = SCTP_GET_CYCLECOUNT;
 	SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].subsys = subsys;
 	SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[0] = a;
 	SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[1] = b;
 	SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[2] = c;
 	SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[3] = d;
 	SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[4] = e;
 	SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[5] = f;
 }
 
 #endif
 static bool
 sctp_recv_udp_tunneled_packet(struct mbuf *m, int off, struct inpcb *inp,
     const struct sockaddr *sa SCTP_UNUSED, void *ctx SCTP_UNUSED)
 {
 	struct ip *iph;
 #ifdef INET6
 	struct ip6_hdr *ip6;
 #endif
 	struct mbuf *sp, *last;
 	struct udphdr *uhdr;
 	uint16_t port;
 
 	if ((m->m_flags & M_PKTHDR) == 0) {
 		/* Can't handle one that is not a pkt hdr */
 		goto out;
 	}
 	/* Pull the src port */
 	iph = mtod(m, struct ip *);
 	uhdr = (struct udphdr *)((caddr_t)iph + off);
 	port = uhdr->uh_sport;
 	/*
 	 * Split out the mbuf chain. Leave the IP header in m, place the
 	 * rest in the sp.
 	 */
 	sp = m_split(m, off, M_NOWAIT);
 	if (sp == NULL) {
 		/* Gak, drop packet, we can't do a split */
 		goto out;
 	}
 	if (sp->m_pkthdr.len < sizeof(struct udphdr) + sizeof(struct sctphdr)) {
 		/* Gak, packet can't have an SCTP header in it - too small */
 		m_freem(sp);
 		goto out;
 	}
 	/* Now pull up the UDP header and SCTP header together */
 	sp = m_pullup(sp, sizeof(struct udphdr) + sizeof(struct sctphdr));
 	if (sp == NULL) {
 		/* Gak pullup failed */
 		goto out;
 	}
 	/* Trim out the UDP header */
 	m_adj(sp, sizeof(struct udphdr));
 
 	/* Now reconstruct the mbuf chain */
 	for (last = m; last->m_next; last = last->m_next);
 	last->m_next = sp;
 	m->m_pkthdr.len += sp->m_pkthdr.len;
 	/*
 	 * The CSUM_DATA_VALID flags indicates that the HW checked the UDP
 	 * checksum and it was valid. Since CSUM_DATA_VALID ==
 	 * CSUM_SCTP_VALID this would imply that the HW also verified the
 	 * SCTP checksum. Therefore, clear the bit.
 	 */
 	SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
 	    "sctp_recv_udp_tunneled_packet(): Packet of length %d received on %s with csum_flags 0x%b.\n",
 	    m->m_pkthdr.len,
 	    if_name(m->m_pkthdr.rcvif),
 	    (int)m->m_pkthdr.csum_flags, CSUM_BITS);
 	m->m_pkthdr.csum_flags &= ~CSUM_DATA_VALID;
 	iph = mtod(m, struct ip *);
 	switch (iph->ip_v) {
 #ifdef INET
 	case IPVERSION:
 		iph->ip_len = htons(ntohs(iph->ip_len) - sizeof(struct udphdr));
 		sctp_input_with_port(m, off, port);
 		break;
 #endif
 #ifdef INET6
 	case IPV6_VERSION >> 4:
 		ip6 = mtod(m, struct ip6_hdr *);
 		ip6->ip6_plen = htons(ntohs(ip6->ip6_plen) - sizeof(struct udphdr));
 		sctp6_input_with_port(&m, &off, port);
 		break;
 #endif
 	default:
 		goto out;
 		break;
 	}
 	return (true);
 out:
 	m_freem(m);
 
 	return (true);
 }
 
 #ifdef INET
 static void
 sctp_recv_icmp_tunneled_packet(udp_tun_icmp_param_t param)
 {
 	struct icmp *icmp = param.icmp;
 	struct ip *outer_ip, *inner_ip;
 	struct sctphdr *sh;
 	struct udphdr *udp;
 	struct sctp_inpcb *inp;
 	struct sctp_tcb *stcb;
 	struct sctp_nets *net;
 	struct sctp_init_chunk *ch;
 	struct sockaddr_in src, dst;
 	uint8_t type, code;
 
 	inner_ip = &icmp->icmp_ip;
 	outer_ip = (struct ip *)((caddr_t)icmp - sizeof(struct ip));
 	if (ntohs(outer_ip->ip_len) <
 	    sizeof(struct ip) + 8 + (inner_ip->ip_hl << 2) + sizeof(struct udphdr) + 8) {
 		return;
 	}
 	udp = (struct udphdr *)((caddr_t)inner_ip + (inner_ip->ip_hl << 2));
 	sh = (struct sctphdr *)(udp + 1);
 	memset(&src, 0, sizeof(struct sockaddr_in));
 	src.sin_family = AF_INET;
 	src.sin_len = sizeof(struct sockaddr_in);
 	src.sin_port = sh->src_port;
 	src.sin_addr = inner_ip->ip_src;
 	memset(&dst, 0, sizeof(struct sockaddr_in));
 	dst.sin_family = AF_INET;
 	dst.sin_len = sizeof(struct sockaddr_in);
 	dst.sin_port = sh->dest_port;
 	dst.sin_addr = inner_ip->ip_dst;
 	/*
 	 * 'dst' holds the dest of the packet that failed to be sent. 'src'
 	 * holds our local endpoint address. Thus we reverse the dst and the
 	 * src in the lookup.
 	 */
 	inp = NULL;
 	net = NULL;
 	stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst,
 	    (struct sockaddr *)&src,
 	    &inp, &net, 1,
 	    SCTP_DEFAULT_VRFID);
 	if ((stcb != NULL) &&
 	    (net != NULL) &&
 	    (inp != NULL)) {
 		/* Check the UDP port numbers */
 		if ((udp->uh_dport != net->port) ||
 		    (udp->uh_sport != htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)))) {
 			SCTP_TCB_UNLOCK(stcb);
 			return;
 		}
 		/* Check the verification tag */
 		if (ntohl(sh->v_tag) != 0) {
 			/*
 			 * This must be the verification tag used for
 			 * sending out packets. We don't consider packets
 			 * reflecting the verification tag.
 			 */
 			if (ntohl(sh->v_tag) != stcb->asoc.peer_vtag) {
 				SCTP_TCB_UNLOCK(stcb);
 				return;
 			}
 		} else {
 			if (ntohs(outer_ip->ip_len) >=
 			    sizeof(struct ip) +
 			    8 + (inner_ip->ip_hl << 2) + 8 + 20) {
 				/*
 				 * In this case we can check if we got an
 				 * INIT chunk and if the initiate tag
 				 * matches.
 				 */
 				ch = (struct sctp_init_chunk *)(sh + 1);
 				if ((ch->ch.chunk_type != SCTP_INITIATION) ||
 				    (ntohl(ch->init.initiate_tag) != stcb->asoc.my_vtag)) {
 					SCTP_TCB_UNLOCK(stcb);
 					return;
 				}
 			} else {
 				SCTP_TCB_UNLOCK(stcb);
 				return;
 			}
 		}
 		type = icmp->icmp_type;
 		code = icmp->icmp_code;
 		if ((type == ICMP_UNREACH) &&
 		    (code == ICMP_UNREACH_PORT)) {
 			code = ICMP_UNREACH_PROTOCOL;
 		}
 		sctp_notify(inp, stcb, net, type, code,
 		    ntohs(inner_ip->ip_len),
 		    (uint32_t)ntohs(icmp->icmp_nextmtu));
 	} else {
 		if ((stcb == NULL) && (inp != NULL)) {
 			/* reduce ref-count */
 			SCTP_INP_WLOCK(inp);
 			SCTP_INP_DECR_REF(inp);
 			SCTP_INP_WUNLOCK(inp);
 		}
 		if (stcb) {
 			SCTP_TCB_UNLOCK(stcb);
 		}
 	}
 	return;
 }
 #endif
 
 #ifdef INET6
 static void
 sctp_recv_icmp6_tunneled_packet(udp_tun_icmp_param_t param)
 {
 	struct ip6ctlparam *ip6cp = param.ip6cp;
 	struct sctp_inpcb *inp;
 	struct sctp_tcb *stcb;
 	struct sctp_nets *net;
 	struct sctphdr sh;
 	struct udphdr udp;
 	struct sockaddr_in6 src, dst;
 	uint8_t type, code;
 
 	/*
 	 * XXX: We assume that when IPV6 is non NULL, M and OFF are valid.
 	 */
 	if (ip6cp->ip6c_m == NULL) {
 		return;
 	}
 	/*
 	 * Check if we can safely examine the ports and the verification tag
 	 * of the SCTP common header.
 	 */
 	if (ip6cp->ip6c_m->m_pkthdr.len <
 	    ip6cp->ip6c_off + sizeof(struct udphdr) + offsetof(struct sctphdr, checksum)) {
 		return;
 	}
 	/* Copy out the UDP header. */
 	memset(&udp, 0, sizeof(struct udphdr));
 	m_copydata(ip6cp->ip6c_m,
 	    ip6cp->ip6c_off,
 	    sizeof(struct udphdr),
 	    (caddr_t)&udp);
 	/* Copy out the port numbers and the verification tag. */
 	memset(&sh, 0, sizeof(struct sctphdr));
 	m_copydata(ip6cp->ip6c_m,
 	    ip6cp->ip6c_off + sizeof(struct udphdr),
 	    sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint32_t),
 	    (caddr_t)&sh);
 	memset(&src, 0, sizeof(struct sockaddr_in6));
 	src.sin6_family = AF_INET6;
 	src.sin6_len = sizeof(struct sockaddr_in6);
 	src.sin6_port = sh.src_port;
 	src.sin6_addr = ip6cp->ip6c_ip6->ip6_src;
 	if (in6_setscope(&src.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
 		return;
 	}
 	memset(&dst, 0, sizeof(struct sockaddr_in6));
 	dst.sin6_family = AF_INET6;
 	dst.sin6_len = sizeof(struct sockaddr_in6);
 	dst.sin6_port = sh.dest_port;
 	dst.sin6_addr = ip6cp->ip6c_ip6->ip6_dst;
 	if (in6_setscope(&dst.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
 		return;
 	}
 	inp = NULL;
 	net = NULL;
 	stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst,
 	    (struct sockaddr *)&src,
 	    &inp, &net, 1, SCTP_DEFAULT_VRFID);
 	if ((stcb != NULL) &&
 	    (net != NULL) &&
 	    (inp != NULL)) {
 		/* Check the UDP port numbers */
 		if ((udp.uh_dport != net->port) ||
 		    (udp.uh_sport != htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)))) {
 			SCTP_TCB_UNLOCK(stcb);
 			return;
 		}
 		/* Check the verification tag */
 		if (ntohl(sh.v_tag) != 0) {
 			/*
 			 * This must be the verification tag used for
 			 * sending out packets. We don't consider packets
 			 * reflecting the verification tag.
 			 */
 			if (ntohl(sh.v_tag) != stcb->asoc.peer_vtag) {
 				SCTP_TCB_UNLOCK(stcb);
 				return;
 			}
 		} else {
 			if (ip6cp->ip6c_m->m_pkthdr.len >=
 			    ip6cp->ip6c_off + sizeof(struct udphdr) +
 			    sizeof(struct sctphdr) +
 			    sizeof(struct sctp_chunkhdr) +
 			    offsetof(struct sctp_init, a_rwnd)) {
 				/*
 				 * In this case we can check if we got an
 				 * INIT chunk and if the initiate tag
 				 * matches.
 				 */
 				uint32_t initiate_tag;
 				uint8_t chunk_type;
 
 				m_copydata(ip6cp->ip6c_m,
 				    ip6cp->ip6c_off +
 				    sizeof(struct udphdr) +
 				    sizeof(struct sctphdr),
 				    sizeof(uint8_t),
 				    (caddr_t)&chunk_type);
 				m_copydata(ip6cp->ip6c_m,
 				    ip6cp->ip6c_off +
 				    sizeof(struct udphdr) +
 				    sizeof(struct sctphdr) +
 				    sizeof(struct sctp_chunkhdr),
 				    sizeof(uint32_t),
 				    (caddr_t)&initiate_tag);
 				if ((chunk_type != SCTP_INITIATION) ||
 				    (ntohl(initiate_tag) != stcb->asoc.my_vtag)) {
 					SCTP_TCB_UNLOCK(stcb);
 					return;
 				}
 			} else {
 				SCTP_TCB_UNLOCK(stcb);
 				return;
 			}
 		}
 		type = ip6cp->ip6c_icmp6->icmp6_type;
 		code = ip6cp->ip6c_icmp6->icmp6_code;
 		if ((type == ICMP6_DST_UNREACH) &&
 		    (code == ICMP6_DST_UNREACH_NOPORT)) {
 			type = ICMP6_PARAM_PROB;
 			code = ICMP6_PARAMPROB_NEXTHEADER;
 		}
 		sctp6_notify(inp, stcb, net, type, code,
 		    ntohl(ip6cp->ip6c_icmp6->icmp6_mtu));
 	} else {
 		if ((stcb == NULL) && (inp != NULL)) {
 			/* reduce inp's ref-count */
 			SCTP_INP_WLOCK(inp);
 			SCTP_INP_DECR_REF(inp);
 			SCTP_INP_WUNLOCK(inp);
 		}
 		if (stcb) {
 			SCTP_TCB_UNLOCK(stcb);
 		}
 	}
 }
 #endif
 
 void
 sctp_over_udp_stop(void)
 {
 	/*
 	 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
 	 * for writing!
 	 */
 #ifdef INET
 	if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
 		soclose(SCTP_BASE_INFO(udp4_tun_socket));
 		SCTP_BASE_INFO(udp4_tun_socket) = NULL;
 	}
 #endif
 #ifdef INET6
 	if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
 		soclose(SCTP_BASE_INFO(udp6_tun_socket));
 		SCTP_BASE_INFO(udp6_tun_socket) = NULL;
 	}
 #endif
 }
 
 int
 sctp_over_udp_start(void)
 {
 	uint16_t port;
 	int ret;
 #ifdef INET
 	struct sockaddr_in sin;
 #endif
 #ifdef INET6
 	struct sockaddr_in6 sin6;
 #endif
 	/*
 	 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
 	 * for writing!
 	 */
 	port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port);
 	if (ntohs(port) == 0) {
 		/* Must have a port set */
 		return (EINVAL);
 	}
 #ifdef INET
 	if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
 		/* Already running -- must stop first */
 		return (EALREADY);
 	}
 #endif
 #ifdef INET6
 	if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
 		/* Already running -- must stop first */
 		return (EALREADY);
 	}
 #endif
 #ifdef INET
 	if ((ret = socreate(PF_INET, &SCTP_BASE_INFO(udp4_tun_socket),
 	    SOCK_DGRAM, IPPROTO_UDP,
 	    curthread->td_ucred, curthread))) {
 		sctp_over_udp_stop();
 		return (ret);
 	}
 	/* Call the special UDP hook. */
 	if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp4_tun_socket),
 	    sctp_recv_udp_tunneled_packet,
 	    sctp_recv_icmp_tunneled_packet,
 	    NULL))) {
 		sctp_over_udp_stop();
 		return (ret);
 	}
 	/* Ok, we have a socket, bind it to the port. */
 	memset(&sin, 0, sizeof(struct sockaddr_in));
 	sin.sin_len = sizeof(struct sockaddr_in);
 	sin.sin_family = AF_INET;
 	sin.sin_port = htons(port);
 	if ((ret = sobind(SCTP_BASE_INFO(udp4_tun_socket),
 	    (struct sockaddr *)&sin, curthread))) {
 		sctp_over_udp_stop();
 		return (ret);
 	}
 #endif
 #ifdef INET6
 	if ((ret = socreate(PF_INET6, &SCTP_BASE_INFO(udp6_tun_socket),
 	    SOCK_DGRAM, IPPROTO_UDP,
 	    curthread->td_ucred, curthread))) {
 		sctp_over_udp_stop();
 		return (ret);
 	}
 	/* Call the special UDP hook. */
 	if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp6_tun_socket),
 	    sctp_recv_udp_tunneled_packet,
 	    sctp_recv_icmp6_tunneled_packet,
 	    NULL))) {
 		sctp_over_udp_stop();
 		return (ret);
 	}
 	/* Ok, we have a socket, bind it to the port. */
 	memset(&sin6, 0, sizeof(struct sockaddr_in6));
 	sin6.sin6_len = sizeof(struct sockaddr_in6);
 	sin6.sin6_family = AF_INET6;
 	sin6.sin6_port = htons(port);
 	if ((ret = sobind(SCTP_BASE_INFO(udp6_tun_socket),
 	    (struct sockaddr *)&sin6, curthread))) {
 		sctp_over_udp_stop();
 		return (ret);
 	}
 #endif
 	return (0);
 }
 
 /*
  * sctp_min_mtu ()returns the minimum of all non-zero arguments.
  * If all arguments are zero, zero is returned.
  */
 uint32_t
 sctp_min_mtu(uint32_t mtu1, uint32_t mtu2, uint32_t mtu3)
 {
 	if (mtu1 > 0) {
 		if (mtu2 > 0) {
 			if (mtu3 > 0) {
 				return (min(mtu1, min(mtu2, mtu3)));
 			} else {
 				return (min(mtu1, mtu2));
 			}
 		} else {
 			if (mtu3 > 0) {
 				return (min(mtu1, mtu3));
 			} else {
 				return (mtu1);
 			}
 		}
 	} else {
 		if (mtu2 > 0) {
 			if (mtu3 > 0) {
 				return (min(mtu2, mtu3));
 			} else {
 				return (mtu2);
 			}
 		} else {
 			return (mtu3);
 		}
 	}
 }
 
 void
 sctp_hc_set_mtu(union sctp_sockstore *addr, uint16_t fibnum, uint32_t mtu)
 {
 	struct in_conninfo inc;
 
 	memset(&inc, 0, sizeof(struct in_conninfo));
 	inc.inc_fibnum = fibnum;
 	switch (addr->sa.sa_family) {
 #ifdef INET
 	case AF_INET:
 		inc.inc_faddr = addr->sin.sin_addr;
 		break;
 #endif
 #ifdef INET6
 	case AF_INET6:
 		inc.inc_flags |= INC_ISIPV6;
 		inc.inc6_faddr = addr->sin6.sin6_addr;
 		break;
 #endif
 	default:
 		return;
 	}
 	tcp_hc_updatemtu(&inc, (u_long)mtu);
 }
 
 uint32_t
 sctp_hc_get_mtu(union sctp_sockstore *addr, uint16_t fibnum)
 {
 	struct in_conninfo inc;
 
 	memset(&inc, 0, sizeof(struct in_conninfo));
 	inc.inc_fibnum = fibnum;
 	switch (addr->sa.sa_family) {
 #ifdef INET
 	case AF_INET:
 		inc.inc_faddr = addr->sin.sin_addr;
 		break;
 #endif
 #ifdef INET6
 	case AF_INET6:
 		inc.inc_flags |= INC_ISIPV6;
 		inc.inc6_faddr = addr->sin6.sin6_addr;
 		break;
 #endif
 	default:
 		return (0);
 	}
 	return ((uint32_t)tcp_hc_getmtu(&inc));
 }
 
 void
 sctp_set_state(struct sctp_tcb *stcb, int new_state)
 {
 #if defined(KDTRACE_HOOKS)
 	int old_state = stcb->asoc.state;
 #endif
 
 	KASSERT((new_state & ~SCTP_STATE_MASK) == 0,
 	    ("sctp_set_state: Can't set substate (new_state = %x)",
 	    new_state));
 	stcb->asoc.state = (stcb->asoc.state & ~SCTP_STATE_MASK) | new_state;
 	if ((new_state == SCTP_STATE_SHUTDOWN_RECEIVED) ||
 	    (new_state == SCTP_STATE_SHUTDOWN_SENT) ||
 	    (new_state == SCTP_STATE_SHUTDOWN_ACK_SENT)) {
 		SCTP_CLEAR_SUBSTATE(stcb, SCTP_STATE_SHUTDOWN_PENDING);
 	}
 #if defined(KDTRACE_HOOKS)
 	if (((old_state & SCTP_STATE_MASK) != new_state) &&
 	    !(((old_state & SCTP_STATE_MASK) == SCTP_STATE_EMPTY) &&
 	    (new_state == SCTP_STATE_INUSE))) {
 		SCTP_PROBE6(state__change, NULL, stcb, NULL, stcb, NULL, old_state);
 	}
 #endif
 }
 
 void
 sctp_add_substate(struct sctp_tcb *stcb, int substate)
 {
 #if defined(KDTRACE_HOOKS)
 	int old_state = stcb->asoc.state;
 #endif
 
 	KASSERT((substate & SCTP_STATE_MASK) == 0,
 	    ("sctp_add_substate: Can't set state (substate = %x)",
 	    substate));
 	stcb->asoc.state |= substate;
 #if defined(KDTRACE_HOOKS)
 	if (((substate & SCTP_STATE_ABOUT_TO_BE_FREED) &&
 	    ((old_state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0)) ||
 	    ((substate & SCTP_STATE_SHUTDOWN_PENDING) &&
 	    ((old_state & SCTP_STATE_SHUTDOWN_PENDING) == 0))) {
 		SCTP_PROBE6(state__change, NULL, stcb, NULL, stcb, NULL, old_state);
 	}
 #endif
 }