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ad81507eed
- All printf that was surrounded by #ifdef SCTP_DEBUG moves to a macro that does all of this. This removes all printfs from the code and makes the code more portable and easier to read. - Static Analysis (cisco) - found a few bugs, but mostly we add checks for NULL pointers and such to make the tool happy. We now pass the Cisco SA tools checks except for where it does not understand tailq/lists. We still need to look at the coverity tools output too (this is like the cisco SA tool) and see if it wants us to fix any other items. Hopefully this will be the last major churn in the code other than bug fixes.
543 lines
16 KiB
C
543 lines
16 KiB
C
/*-
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* Copyright (c) 2001-2007, by 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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#include <netinet/sctp_os.h>
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#include <netinet/sctp.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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LIST_HEAD(sctp_vrflist, sctp_vrf);
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LIST_HEAD(sctp_ifnlist, sctp_ifn);
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LIST_HEAD(sctp_ifalist, sctp_ifa);
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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_auth.h>
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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_vrf {
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LIST_ENTRY(sctp_vrf) next_vrf;
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struct sctp_ifalist *vrf_addr_hash;
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struct sctp_ifnlist *vrf_ifn_hash;
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struct sctp_ifnlist ifnlist;
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uint32_t vrf_id;
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uint32_t total_ifa_count;
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u_long vrf_addr_hashmark;
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u_long vrf_ifn_hashmark;
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};
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struct sctp_ifn {
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struct sctp_ifalist ifalist;
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struct sctp_vrf *vrf;
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LIST_ENTRY(sctp_ifn) next_ifn;
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LIST_ENTRY(sctp_ifn) next_bucket;
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void *ifn_p; /* never access without appropriate lock */
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uint32_t ifn_mtu;
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uint32_t ifn_type;
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uint32_t ifn_index; /* shorthand way to look at ifn for reference */
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uint32_t refcount; /* number of reference held should be >=
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* ifa_count */
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uint32_t ifa_count; /* IFA's we hold (in our list - ifalist) */
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char ifn_name[SCTP_IFNAMSIZ];
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};
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/* SCTP local IFA flags */
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#define SCTP_ADDR_VALID 0x00000001 /* its up and active */
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#define SCTP_BEING_DELETED 0x00000002 /* being deleted, when
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* refcount = 0. Note that it
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* is pulled from the ifn list
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* and ifa_p is nulled right
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* away but it cannot be freed
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* until the last *net
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* pointing to it is deleted. */
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#define SCTP_ADDR_DEFER_USE 0x00000004 /* Hold off using this one */
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#define SCTP_ADDR_IFA_UNUSEABLE 0x00000008
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struct sctp_ifa {
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LIST_ENTRY(sctp_ifa) next_ifa;
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LIST_ENTRY(sctp_ifa) next_bucket;
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struct sctp_ifn *ifn_p; /* back pointer to parent ifn */
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void *ifa; /* pointer to ifa, needed for flag update for
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* that we MUST lock appropriate locks. This
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* is for V6. */
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union sctp_sockstore address;
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uint32_t refcount; /* number of folks refering to this */
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uint32_t flags;
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uint32_t localifa_flags;
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uint8_t src_is_loop;
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uint8_t src_is_priv;
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uint8_t src_is_glob;
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uint8_t resv;
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};
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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 sctp_ifa *ifa;
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uint32_t action; /* Used during asconf and adding if no-zero
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* src-addr selection will not consider this
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* address. */
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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 sctp_vrflist *sctp_vrfhash;
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u_long hashvrfmark;
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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_iterator_wq_mtx;
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struct mtx ipi_addr_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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/* Number of vrfs */
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uint32_t ipi_count_vrfs;
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/* Number of ifns */
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uint32_t ipi_count_ifns;
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/* Number of ifas */
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uint32_t ipi_count_ifas;
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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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/* address work queue handling */
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#if defined(SCTP_USE_THREAD_BASED_ITERATOR)
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uint32_t iterator_running;
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SCTP_PROCESS_STRUCT thread_proc;
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#endif
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struct sctp_timer addr_wq_timer;
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};
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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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unsigned int sctp_sack_freq;
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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, NULL if bound-all */
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struct sctpladdr sctp_addr_list;
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/*
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* used for source address selection rotation when we are subset
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* bound
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*/
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struct sctp_laddr *next_addr_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
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* (pkt, pkt_last and control).
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* routine. However, I don't think anyone in
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* the current FreeBSD kernel calls this. So
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* they are candidates with sctp_sendm for
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* 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 def_vrf_id;
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uint32_t def_table_id;
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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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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_ifn *
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sctp_find_ifn(struct sctp_vrf *vrf, void *ifn, uint32_t ifn_index);
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struct sctp_vrf *sctp_allocate_vrf(int vrfid);
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struct sctp_vrf *sctp_find_vrf(uint32_t vrfid);
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struct sctp_ifa *
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sctp_add_addr_to_vrf(uint32_t vrfid,
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void *ifn, uint32_t ifn_index, uint32_t ifn_type,
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const char *if_name,
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void *ifa, struct sockaddr *addr, uint32_t ifa_flags, int dynamic_add);
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void sctp_update_ifn_mtu(uint32_t vrf_id, uint32_t ifn_index, uint32_t mtu);
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void sctp_free_ifn(struct sctp_ifn *sctp_ifnp);
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void sctp_free_ifa(struct sctp_ifa *sctp_ifap);
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void
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sctp_del_addr_from_vrf(uint32_t vrfid, struct sockaddr *addr,
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uint32_t ifn_index);
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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, uint32_t);
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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 **, uint32_t vrf_id);
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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, uint32_t);
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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 **);
|
|
|
|
int sctp_inpcb_alloc(struct socket *);
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|
|
|
int sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id);
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|
|
|
void sctp_inpcb_free(struct sctp_inpcb *, int, int);
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|
|
|
struct sctp_tcb *
|
|
sctp_aloc_assoc(struct sctp_inpcb *, struct sockaddr *,
|
|
int, int *, uint32_t, uint32_t);
|
|
|
|
int sctp_free_assoc(struct sctp_inpcb *, struct sctp_tcb *, int, int);
|
|
|
|
void
|
|
sctp_add_vtag_to_timewait(struct sctp_inpcb *, uint32_t, uint32_t);
|
|
|
|
void sctp_add_local_addr_ep(struct sctp_inpcb *, struct sctp_ifa *, uint32_t);
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|
|
|
int sctp_insert_laddr(struct sctpladdr *, struct sctp_ifa *, uint32_t);
|
|
|
|
void sctp_remove_laddr(struct sctp_laddr *);
|
|
|
|
void sctp_del_local_addr_ep(struct sctp_inpcb *, struct sctp_ifa *);
|
|
|
|
void sctp_set_initial_cc_param(struct sctp_tcb *, struct sctp_nets *net);
|
|
|
|
|
|
int sctp_add_remote_addr(struct sctp_tcb *, struct sockaddr *, int, int);
|
|
|
|
void sctp_remove_net(struct sctp_tcb *, struct sctp_nets *);
|
|
|
|
int sctp_del_remote_addr(struct sctp_tcb *, struct sockaddr *);
|
|
|
|
void sctp_pcb_init(void);
|
|
|
|
void sctp_add_local_addr_assoc(struct sctp_tcb *, struct sctp_ifa *, int);
|
|
|
|
void sctp_del_local_addr_assoc(struct sctp_tcb *, struct sctp_ifa *);
|
|
|
|
int
|
|
sctp_load_addresses_from_init(struct sctp_tcb *, struct mbuf *, int, int,
|
|
int, struct sctphdr *, struct sockaddr *);
|
|
|
|
int
|
|
sctp_set_primary_addr(struct sctp_tcb *, struct sockaddr *,
|
|
struct sctp_nets *);
|
|
|
|
int sctp_is_vtag_good(struct sctp_inpcb *, uint32_t, struct timeval *);
|
|
|
|
/* void sctp_drain(void); */
|
|
|
|
int sctp_destination_is_reachable(struct sctp_tcb *, struct sockaddr *);
|
|
|
|
/*-
|
|
* Null in last arg inpcb indicate run on ALL ep's. Specific inp in last arg
|
|
* indicates run on ONLY assoc's of the specified endpoint.
|
|
*/
|
|
int
|
|
sctp_initiate_iterator(inp_func inpf,
|
|
asoc_func af,
|
|
inp_func inpe,
|
|
uint32_t, uint32_t,
|
|
uint32_t, void *,
|
|
uint32_t,
|
|
end_func ef,
|
|
struct sctp_inpcb *,
|
|
uint8_t co_off);
|
|
|
|
#endif /* _KERNEL */
|
|
#endif /* !__sctp_pcb_h__ */
|