d392a291a2
access plus timers. This makes the code more portable and able to change out the mbuf or timer system used more easily ;-) b) removal of all use of pkt-hdr's until only the places we need them (before ip_output routines). c) remove a bunch of code not needed due to <b> aka worrying about pkthdr's :-) d) There was one last reorder problem it looks where if a restart occur's and we release and relock (at the point where we setup our alias vtag) we would end up possibly getting the wrong TSN in place. The code that fixed the TSN's just needed to be shifted around BEFORE the release of the lock.. also code that set the state (since this also could contribute). Approved by: gnn
515 lines
15 KiB
C
515 lines
15 KiB
C
/*-
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* Copyright (c) 2001-2006, Cisco Systems, Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* a) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* b) Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the distribution.
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*
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* c) Neither the name of Cisco Systems, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* $KAME: sctp_pcb.h,v 1.21 2005/07/16 01:18:47 suz Exp $ */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#ifndef __sctp_pcb_h__
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#define __sctp_pcb_h__
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/*
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* We must have V6 so the size of the proto can be calculated. Otherwise we
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* would not allocate enough for Net/Open BSD :-<
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*/
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#if defined(_KERNEL)
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#include <net/pfil.h>
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#endif
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <net/if.h>
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#include <net/if_types.h>
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#include <net/if_var.h>
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#include <net/route.h>
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#include <netinet/in.h>
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#include <netinet/ip6.h>
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#include <netinet6/ip6_var.h>
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#include <netinet6/ip6protosw.h>
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#include <netinet6/in6_var.h>
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#include <netinet6/in6_pcb.h>
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#ifndef in6pcb
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#define in6pcb inpcb
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#endif
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#include <netinet/sctp.h>
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#include <netinet/sctp_os.h>
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#include <netinet/sctp_constants.h>
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LIST_HEAD(sctppcbhead, sctp_inpcb);
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LIST_HEAD(sctpasochead, sctp_tcb);
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LIST_HEAD(sctpladdr, sctp_laddr);
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LIST_HEAD(sctpvtaghead, sctp_tagblock);
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TAILQ_HEAD(sctp_readhead, sctp_queued_to_read);
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TAILQ_HEAD(sctp_streamhead, sctp_stream_queue_pending);
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#include <netinet/sctp_structs.h>
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#include <netinet/sctp_uio.h>
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#include <netinet/sctp_auth.h>
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/*
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* PCB flags (in sctp_flags bitmask)
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*/
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#define SCTP_PCB_FLAGS_UDPTYPE 0x00000001
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#define SCTP_PCB_FLAGS_TCPTYPE 0x00000002
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#define SCTP_PCB_FLAGS_BOUNDALL 0x00000004
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#define SCTP_PCB_FLAGS_ACCEPTING 0x00000008
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#define SCTP_PCB_FLAGS_UNBOUND 0x00000010
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#define SCTP_PCB_FLAGS_CLOSE_IP 0x00040000
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#define SCTP_PCB_FLAGS_WAS_CONNECTED 0x00080000
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#define SCTP_PCB_FLAGS_WAS_ABORTED 0x00100000
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/* TCP model support */
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#define SCTP_PCB_FLAGS_CONNECTED 0x00200000
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#define SCTP_PCB_FLAGS_IN_TCPPOOL 0x00400000
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#define SCTP_PCB_FLAGS_DONT_WAKE 0x00800000
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#define SCTP_PCB_FLAGS_WAKEOUTPUT 0x01000000
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#define SCTP_PCB_FLAGS_WAKEINPUT 0x02000000
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#define SCTP_PCB_FLAGS_BOUND_V6 0x04000000
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#define SCTP_PCB_FLAGS_NEEDS_MAPPED_V4 0x08000000
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#define SCTP_PCB_FLAGS_BLOCKING_IO 0x10000000
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#define SCTP_PCB_FLAGS_SOCKET_GONE 0x20000000
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#define SCTP_PCB_FLAGS_SOCKET_ALLGONE 0x40000000
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/* flags to copy to new PCB */
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#define SCTP_PCB_COPY_FLAGS 0x0e000004
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/*
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* PCB Features (in sctp_features bitmask)
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*/
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#define SCTP_PCB_FLAGS_EXT_RCVINFO 0x00000004
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#define SCTP_PCB_FLAGS_DONOT_HEARTBEAT 0x00000008
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#define SCTP_PCB_FLAGS_FRAG_INTERLEAVE 0x00000010
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#define SCTP_PCB_FLAGS_DO_ASCONF 0x00000020
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#define SCTP_PCB_FLAGS_AUTO_ASCONF 0x00000040
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/* socket options */
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#define SCTP_PCB_FLAGS_NODELAY 0x00000100
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#define SCTP_PCB_FLAGS_AUTOCLOSE 0x00000200
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#define SCTP_PCB_FLAGS_RECVDATAIOEVNT 0x00000400
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#define SCTP_PCB_FLAGS_RECVASSOCEVNT 0x00000800
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#define SCTP_PCB_FLAGS_RECVPADDREVNT 0x00001000
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#define SCTP_PCB_FLAGS_RECVPEERERR 0x00002000
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#define SCTP_PCB_FLAGS_RECVSENDFAILEVNT 0x00004000
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#define SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT 0x00008000
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#define SCTP_PCB_FLAGS_ADAPTATIONEVNT 0x00010000
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#define SCTP_PCB_FLAGS_PDAPIEVNT 0x00020000
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#define SCTP_PCB_FLAGS_AUTHEVNT 0x00040000
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#define SCTP_PCB_FLAGS_STREAM_RESETEVNT 0x00080000
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#define SCTP_PCB_FLAGS_NO_FRAGMENT 0x00100000
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#define SCTP_PCB_FLAGS_EXPLICIT_EOR 0x00200000
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#define SCTP_PCBHASH_ALLADDR(port, mask) (port & mask)
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#define SCTP_PCBHASH_ASOC(tag, mask) (tag & mask)
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struct sctp_laddr {
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LIST_ENTRY(sctp_laddr) sctp_nxt_addr; /* next in list */
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struct ifaddr *ifa;
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int action; /* Only used in delayed asconf stuff */
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};
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struct sctp_block_entry {
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int error;
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};
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struct sctp_timewait {
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uint32_t tv_sec_at_expire; /* the seconds from boot to expire */
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uint32_t v_tag; /* the vtag that can not be reused */
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};
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struct sctp_tagblock {
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LIST_ENTRY(sctp_tagblock) sctp_nxt_tagblock;
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struct sctp_timewait vtag_block[SCTP_NUMBER_IN_VTAG_BLOCK];
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};
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struct sctp_epinfo {
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struct sctpasochead *sctp_asochash;
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u_long hashasocmark;
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struct sctppcbhead *sctp_ephash;
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u_long hashmark;
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struct sctpasochead *sctp_restarthash;
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u_long hashrestartmark;
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/*
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* The TCP model represents a substantial overhead in that we get an
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* additional hash table to keep explicit connections in. The
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* listening TCP endpoint will exist in the usual ephash above and
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* accept only INIT's. It will be incapable of sending off an INIT.
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* When a dg arrives we must look in the normal ephash. If we find a
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* TCP endpoint that will tell us to go to the specific endpoint
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* hash and re-hash to find the right assoc/socket. If we find a UDP
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* model socket we then must complete the lookup. If this fails,
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* i.e. no association can be found then we must continue to see if
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* a sctp_peeloff()'d socket is in the tcpephash (a spun off socket
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* acts like a TCP model connected socket).
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*/
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struct sctppcbhead *sctp_tcpephash;
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u_long hashtcpmark;
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uint32_t hashtblsize;
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struct sctppcbhead listhead;
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struct sctpladdr addr_wq;
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struct sctpiterators iteratorhead;
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/* ep zone info */
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sctp_zone_t ipi_zone_ep;
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sctp_zone_t ipi_zone_asoc;
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sctp_zone_t ipi_zone_laddr;
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sctp_zone_t ipi_zone_net;
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sctp_zone_t ipi_zone_chunk;
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sctp_zone_t ipi_zone_readq;
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sctp_zone_t ipi_zone_strmoq;
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struct mtx ipi_ep_mtx;
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struct mtx it_mtx;
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struct mtx ipi_addr_mtx;
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struct mtx timer_mtx;
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uint32_t ipi_count_ep;
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/* assoc/tcb zone info */
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uint32_t ipi_count_asoc;
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/* local addrlist zone info */
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uint32_t ipi_count_laddr;
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/* remote addrlist zone info */
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uint32_t ipi_count_raddr;
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/* chunk structure list for output */
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uint32_t ipi_count_chunk;
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/* socket queue zone info */
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uint32_t ipi_count_readq;
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/* socket queue zone info */
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uint32_t ipi_count_strmoq;
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/* system wide number of free chunks hanging around */
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uint32_t ipi_free_chunks;
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uint32_t ipi_free_strmoq;
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struct sctpvtaghead vtag_timewait[SCTP_STACK_VTAG_HASH_SIZE];
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struct sctp_timer addr_wq_timer;
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/* for port allocations */
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uint16_t lastport;
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uint16_t lastlow;
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uint16_t lasthi;
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};
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extern struct sctpstat sctpstat;
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/*
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* Here we have all the relevant information for each SCTP entity created. We
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* will need to modify this as approprate. We also need to figure out how to
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* access /dev/random.
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*/
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struct sctp_pcb {
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unsigned int time_of_secret_change; /* number of seconds from
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* timeval.tv_sec */
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uint32_t secret_key[SCTP_HOW_MANY_SECRETS][SCTP_NUMBER_OF_SECRETS];
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unsigned int size_of_a_cookie;
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unsigned int sctp_timeoutticks[SCTP_NUM_TMRS];
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unsigned int sctp_minrto;
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unsigned int sctp_maxrto;
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unsigned int initial_rto;
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int initial_init_rto_max;
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uint32_t sctp_sws_sender;
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uint32_t sctp_sws_receiver;
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/* authentication related fields */
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struct sctp_keyhead shared_keys;
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sctp_auth_chklist_t *local_auth_chunks;
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sctp_hmaclist_t *local_hmacs;
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uint16_t default_keyid;
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/* various thresholds */
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/* Max times I will init at a guy */
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uint16_t max_init_times;
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/* Max times I will send before we consider someone dead */
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uint16_t max_send_times;
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uint16_t def_net_failure;
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/* number of streams to pre-open on a association */
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uint16_t pre_open_stream_count;
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uint16_t max_open_streams_intome;
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/* random number generator */
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uint32_t random_counter;
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uint8_t random_numbers[SCTP_SIGNATURE_ALOC_SIZE];
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uint8_t random_store[SCTP_SIGNATURE_ALOC_SIZE];
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/*
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* This timer is kept running per endpoint. When it fires it will
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* change the secret key. The default is once a hour
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*/
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struct sctp_timer signature_change;
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int def_cookie_life;
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/* defaults to 0 */
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int auto_close_time;
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uint32_t initial_sequence_debug;
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uint32_t adaptation_layer_indicator;
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char store_at;
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uint8_t max_burst;
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char current_secret_number;
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char last_secret_number;
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};
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#ifndef SCTP_ALIGNMENT
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#define SCTP_ALIGNMENT 32
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#endif
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#ifndef SCTP_ALIGNM1
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#define SCTP_ALIGNM1 (SCTP_ALIGNMENT-1)
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#endif
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#define sctp_lport ip_inp.inp.inp_lport
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struct sctp_inpcb {
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/*
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* put an inpcb in front of it all, kind of a waste but we need to
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* for compatability with all the other stuff.
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*/
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union {
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struct inpcb inp;
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char align[(sizeof(struct in6pcb) + SCTP_ALIGNM1) &
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~SCTP_ALIGNM1];
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} ip_inp;
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/* Socket buffer lock protects read_queue and of course sb_cc */
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struct sctp_readhead read_queue;
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LIST_ENTRY(sctp_inpcb) sctp_list; /* lists all endpoints */
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/* hash of all endpoints for model */
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LIST_ENTRY(sctp_inpcb) sctp_hash;
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/* count of local addresses bound, 0 if bound all */
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int laddr_count;
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/* list of addrs in use by the EP */
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struct sctpladdr sctp_addr_list;
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/* used for source address selection rotation */
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struct sctp_laddr *next_addr_touse;
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struct ifnet *next_ifn_touse;
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/* back pointer to our socket */
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struct socket *sctp_socket;
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uint32_t sctp_flags; /* INP state flag set */
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uint32_t sctp_features; /* Feature flags */
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struct sctp_pcb sctp_ep;/* SCTP ep data */
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/* head of the hash of all associations */
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struct sctpasochead *sctp_tcbhash;
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u_long sctp_hashmark;
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/* head of the list of all associations */
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struct sctpasochead sctp_asoc_list;
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#ifdef SCTP_TRACK_FREED_ASOCS
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struct sctpasochead sctp_asoc_free_list;
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#endif
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struct sctp_iterator *inp_starting_point_for_iterator;
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uint32_t sctp_frag_point;
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uint32_t partial_delivery_point;
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uint32_t sctp_context;
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struct sctp_sndrcvinfo def_send;
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/*
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* These three are here for the sosend_dgram (pkt, pkt_last and
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* control). routine. However, I don't think anyone in the current
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* FreeBSD kernel calls this. So they are candidates with sctp_sendm
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* for de-supporting.
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*/
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struct mbuf *pkt, *pkt_last;
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struct mbuf *control;
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struct mtx inp_mtx;
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struct mtx inp_create_mtx;
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struct mtx inp_rdata_mtx;
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int32_t refcount;
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uint32_t total_sends;
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uint32_t total_recvs;
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uint32_t last_abort_code;
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uint32_t total_nospaces;
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};
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struct sctp_tcb {
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struct socket *sctp_socket; /* back pointer to socket */
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struct sctp_inpcb *sctp_ep; /* back pointer to ep */
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LIST_ENTRY(sctp_tcb) sctp_tcbhash; /* next link in hash
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* table */
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LIST_ENTRY(sctp_tcb) sctp_tcblist; /* list of all of the
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* TCB's */
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LIST_ENTRY(sctp_tcb) sctp_tcbrestarhash; /* next link in restart
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* hash table */
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LIST_ENTRY(sctp_tcb) sctp_asocs; /* vtag hash list */
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struct sctp_block_entry *block_entry; /* pointer locked by socket
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* send buffer */
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struct sctp_association asoc;
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/*
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* freed_by_sorcv_sincelast is protected by the sockbuf_lock NOT the
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* tcb_lock. Its special in this way to help avoid extra mutex calls
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* in the reading of data.
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*/
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uint32_t freed_by_sorcv_sincelast;
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uint32_t total_sends;
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uint32_t total_recvs;
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int freed_from_where;
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uint16_t rport; /* remote port in network format */
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uint16_t resv;
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struct mtx tcb_mtx;
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struct mtx tcb_send_mtx;
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};
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#include <netinet/sctp_lock_bsd.h>
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#if defined(_KERNEL)
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extern struct sctp_epinfo sctppcbinfo;
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extern int sctp_auto_asconf;
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int SCTP6_ARE_ADDR_EQUAL(struct in6_addr *a, struct in6_addr *b);
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void sctp_fill_pcbinfo(struct sctp_pcbinfo *);
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struct sctp_nets *sctp_findnet(struct sctp_tcb *, struct sockaddr *);
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struct sctp_inpcb *sctp_pcb_findep(struct sockaddr *, int, int);
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int sctp_inpcb_bind(struct socket *, struct sockaddr *, struct thread *);
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struct sctp_tcb *
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sctp_findassociation_addr(struct mbuf *, int, int,
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struct sctphdr *, struct sctp_chunkhdr *, struct sctp_inpcb **,
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struct sctp_nets **);
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struct sctp_tcb *
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sctp_findassociation_addr_sa(struct sockaddr *,
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struct sockaddr *, struct sctp_inpcb **, struct sctp_nets **, int);
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void
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sctp_move_pcb_and_assoc(struct sctp_inpcb *, struct sctp_inpcb *,
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struct sctp_tcb *);
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/*
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* For this call ep_addr, the to is the destination endpoint address of the
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* peer (relative to outbound). The from field is only used if the TCP model
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* is enabled and helps distingush amongst the subset bound (non-boundall).
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* The TCP model MAY change the actual ep field, this is why it is passed.
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*/
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struct sctp_tcb *
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sctp_findassociation_ep_addr(struct sctp_inpcb **,
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struct sockaddr *, struct sctp_nets **, struct sockaddr *,
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struct sctp_tcb *);
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struct sctp_tcb *
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sctp_findassociation_ep_asocid(struct sctp_inpcb *,
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sctp_assoc_t, int);
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struct sctp_tcb *
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sctp_findassociation_ep_asconf(struct mbuf *, int, int,
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struct sctphdr *, struct sctp_inpcb **, struct sctp_nets **);
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int sctp_inpcb_alloc(struct socket *);
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int sctp_is_address_on_local_host(struct sockaddr *addr);
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void sctp_inpcb_free(struct sctp_inpcb *, int, int);
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struct sctp_tcb *
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sctp_aloc_assoc(struct sctp_inpcb *, struct sockaddr *,
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int, int *, uint32_t);
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int sctp_free_assoc(struct sctp_inpcb *, struct sctp_tcb *, int, int);
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int sctp_add_local_addr_ep(struct sctp_inpcb *, struct ifaddr *);
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int sctp_insert_laddr(struct sctpladdr *, struct ifaddr *);
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void sctp_remove_laddr(struct sctp_laddr *);
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int sctp_del_local_addr_ep(struct sctp_inpcb *, struct ifaddr *);
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int sctp_del_local_addr_ep_sa(struct sctp_inpcb *, struct sockaddr *);
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int sctp_add_remote_addr(struct sctp_tcb *, struct sockaddr *, int, int);
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void sctp_remove_net(struct sctp_tcb *, struct sctp_nets *);
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int sctp_del_remote_addr(struct sctp_tcb *, struct sockaddr *);
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void sctp_pcb_init(void);
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int sctp_add_local_addr_assoc(struct sctp_tcb *, struct ifaddr *);
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int sctp_del_local_addr_assoc(struct sctp_tcb *, struct ifaddr *);
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int sctp_del_local_addr_assoc_sa(struct sctp_tcb *, struct sockaddr *);
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int
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sctp_load_addresses_from_init(struct sctp_tcb *, struct mbuf *, int, int,
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int, struct sctphdr *, struct sockaddr *);
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int
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sctp_set_primary_addr(struct sctp_tcb *, struct sockaddr *,
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struct sctp_nets *);
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int sctp_is_vtag_good(struct sctp_inpcb *, uint32_t, struct timeval *);
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/* void sctp_drain(void); */
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int sctp_destination_is_reachable(struct sctp_tcb *, struct sockaddr *);
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/*
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* Null in last arg inpcb indicate run on ALL ep's. Specific inp in last arg
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* indicates run on ONLY assoc's of the specified endpoint.
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*/
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int
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sctp_initiate_iterator(inp_func inpf, asoc_func af, uint32_t, uint32_t,
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uint32_t, void *, uint32_t, end_func ef, struct sctp_inpcb *, uint8_t co_off);
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#endif /* _KERNEL */
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#endif /* !__sctp_pcb_h__ */
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