The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/netinet/sctp_indata.h

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    1 /*-
    2  * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
    3  * Copyright (c) 2008-2011, by Randall Stewart. All rights reserved.
    4  * Copyright (c) 2008-2011, by Michael Tuexen. All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions are met:
    8  *
    9  * a) Redistributions of source code must retain the above copyright notice,
   10  *   this list of conditions and the following disclaimer.
   11  *
   12  * b) Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in
   14  *   the documentation and/or other materials provided with the distribution.
   15  *
   16  * c) Neither the name of Cisco Systems, Inc. nor the names of its
   17  *    contributors may be used to endorse or promote products derived
   18  *    from this software without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
   22  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   23  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
   24  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
   30  * THE POSSIBILITY OF SUCH DAMAGE.
   31  */
   32 
   33 /* $KAME: sctp_indata.h,v 1.9 2005/03/06 16:04:17 itojun Exp $   */
   34 
   35 #include <sys/cdefs.h>
   36 __FBSDID("$FreeBSD: releng/9.0/sys/netinet/sctp_indata.h 222459 2011-05-29 18:41:06Z tuexen $");
   37 
   38 #ifndef __sctp_indata_h__
   39 #define __sctp_indata_h__
   40 
   41 #if defined(_KERNEL) || defined(__Userspace__)
   42 
   43 struct sctp_queued_to_read *
   44 sctp_build_readq_entry(struct sctp_tcb *stcb,
   45     struct sctp_nets *net,
   46     uint32_t tsn, uint32_t ppid,
   47     uint32_t context, uint16_t stream_no,
   48     uint16_t stream_seq, uint8_t flags,
   49     struct mbuf *dm);
   50 
   51 
   52 #define sctp_build_readq_entry_mac(_ctl, in_it, a, net, tsn, ppid, context, stream_no, stream_seq, flags, dm) do { \
   53         if (_ctl) { \
   54                 atomic_add_int(&((net)->ref_count), 1); \
   55                 (_ctl)->sinfo_stream = stream_no; \
   56                 (_ctl)->sinfo_ssn = stream_seq; \
   57                 (_ctl)->sinfo_flags = (flags << 8); \
   58                 (_ctl)->sinfo_ppid = ppid; \
   59                 (_ctl)->sinfo_context = a; \
   60                 (_ctl)->sinfo_timetolive = 0; \
   61                 (_ctl)->sinfo_tsn = tsn; \
   62                 (_ctl)->sinfo_cumtsn = tsn; \
   63                 (_ctl)->sinfo_assoc_id = sctp_get_associd((in_it)); \
   64                 (_ctl)->length = 0; \
   65                 (_ctl)->held_length = 0; \
   66                 (_ctl)->whoFrom = net; \
   67                 (_ctl)->data = dm; \
   68                 (_ctl)->tail_mbuf = NULL; \
   69                 (_ctl)->aux_data = NULL; \
   70                 (_ctl)->stcb = (in_it); \
   71                 (_ctl)->port_from = (in_it)->rport; \
   72                 (_ctl)->spec_flags = 0; \
   73                 (_ctl)->do_not_ref_stcb = 0; \
   74                 (_ctl)->end_added = 0; \
   75                 (_ctl)->pdapi_aborted = 0; \
   76                 (_ctl)->some_taken = 0; \
   77         } \
   78 } while (0)
   79 
   80 
   81 
   82 struct mbuf *
   83 sctp_build_ctl_nchunk(struct sctp_inpcb *inp,
   84     struct sctp_sndrcvinfo *sinfo);
   85 
   86 void sctp_set_rwnd(struct sctp_tcb *, struct sctp_association *);
   87 
   88 uint32_t
   89 sctp_calc_rwnd(struct sctp_tcb *stcb, struct sctp_association *asoc);
   90 
   91 void
   92 sctp_express_handle_sack(struct sctp_tcb *stcb, uint32_t cumack,
   93     uint32_t rwnd, int *abort_now, int ecne_seen);
   94 
   95 void
   96 sctp_handle_sack(struct mbuf *m, int offset_seg, int offset_dup,
   97     struct sctp_tcb *stcb, struct sctp_nets *net_from,
   98     uint16_t num_seg, uint16_t num_nr_seg, uint16_t num_dup,
   99     int *abort_now, uint8_t flags,
  100     uint32_t cum_ack, uint32_t rwnd, int ecne_seen);
  101 
  102 /* draft-ietf-tsvwg-usctp */
  103 void
  104 sctp_handle_forward_tsn(struct sctp_tcb *,
  105     struct sctp_forward_tsn_chunk *, int *, struct mbuf *, int);
  106 
  107 struct sctp_tmit_chunk *
  108                 sctp_try_advance_peer_ack_point(struct sctp_tcb *, struct sctp_association *);
  109 
  110 void sctp_service_queues(struct sctp_tcb *, struct sctp_association *);
  111 
  112 void
  113 sctp_update_acked(struct sctp_tcb *, struct sctp_shutdown_chunk *,
  114     struct sctp_nets *, int *);
  115 
  116 int
  117 sctp_process_data(struct mbuf **, int, int *, int, struct sctphdr *,
  118     struct sctp_inpcb *, struct sctp_tcb *,
  119     struct sctp_nets *, uint32_t *);
  120 
  121 void sctp_slide_mapping_arrays(struct sctp_tcb *stcb);
  122 
  123 void sctp_sack_check(struct sctp_tcb *, int, int *);
  124 
  125 #endif
  126 #endif

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