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) 2008-2012, by Randall Stewart. All rights reserved.
    4  * Copyright (c) 2008-2012, 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 #include <sys/cdefs.h>
   34 __FBSDID("$FreeBSD: releng/11.0/sys/netinet/sctp_indata.h 297663 2016-04-07 09:34:41Z rrs $");
   35 
   36 #ifndef _NETINET_SCTP_INDATA_H_
   37 #define _NETINET_SCTP_INDATA_H_
   38 
   39 #if defined(_KERNEL) || defined(__Userspace__)
   40 
   41 struct sctp_queued_to_read *
   42 sctp_build_readq_entry(struct sctp_tcb *stcb,
   43     struct sctp_nets *net,
   44     uint32_t tsn, uint32_t ppid,
   45     uint32_t context, uint16_t stream_no,
   46     uint32_t stream_seq, uint8_t flags,
   47     struct mbuf *dm);
   48 
   49 
   50 #define sctp_build_readq_entry_mac(_ctl, in_it, context, net, tsn, ppid, stream_no, stream_seq, flags, dm, tfsn, msgid) do { \
   51         if (_ctl) { \
   52                 atomic_add_int(&((net)->ref_count), 1); \
   53                 memset(_ctl, 0, sizeof(struct sctp_queued_to_read)); \
   54                 (_ctl)->sinfo_stream = stream_no; \
   55                 (_ctl)->sinfo_ssn = stream_seq; \
   56                 TAILQ_INIT(&_ctl->reasm); \
   57                 (_ctl)->top_fsn = tfsn; \
   58                 (_ctl)->msg_id = msgid; \
   59                 (_ctl)->sinfo_flags = (flags << 8); \
   60                 (_ctl)->sinfo_ppid = ppid; \
   61                 (_ctl)->sinfo_context = context; \
   62                 (_ctl)->fsn_included = 0xffffffff; \
   63                 (_ctl)->top_fsn = 0xffffffff; \
   64                 (_ctl)->sinfo_tsn = tsn; \
   65                 (_ctl)->sinfo_cumtsn = tsn; \
   66                 (_ctl)->sinfo_assoc_id = sctp_get_associd((in_it)); \
   67                 (_ctl)->whoFrom = net; \
   68                 (_ctl)->data = dm; \
   69                 (_ctl)->stcb = (in_it); \
   70                 (_ctl)->port_from = (in_it)->rport; \
   71         } \
   72 } while (0)
   73 
   74 
   75 
   76 struct mbuf *
   77 sctp_build_ctl_nchunk(struct sctp_inpcb *inp,
   78     struct sctp_sndrcvinfo *sinfo);
   79 
   80 void sctp_set_rwnd(struct sctp_tcb *, struct sctp_association *);
   81 
   82 uint32_t
   83 sctp_calc_rwnd(struct sctp_tcb *stcb, struct sctp_association *asoc);
   84 
   85 void
   86 sctp_express_handle_sack(struct sctp_tcb *stcb, uint32_t cumack,
   87     uint32_t rwnd, int *abort_now, int ecne_seen);
   88 
   89 void
   90 sctp_handle_sack(struct mbuf *m, int offset_seg, int offset_dup,
   91     struct sctp_tcb *stcb,
   92     uint16_t num_seg, uint16_t num_nr_seg, uint16_t num_dup,
   93     int *abort_now, uint8_t flags,
   94     uint32_t cum_ack, uint32_t rwnd, int ecne_seen);
   95 
   96 /* draft-ietf-tsvwg-usctp */
   97 void
   98 sctp_handle_forward_tsn(struct sctp_tcb *,
   99     struct sctp_forward_tsn_chunk *, int *, struct mbuf *, int);
  100 
  101 struct sctp_tmit_chunk *
  102                 sctp_try_advance_peer_ack_point(struct sctp_tcb *, struct sctp_association *);
  103 
  104 void sctp_service_queues(struct sctp_tcb *, struct sctp_association *);
  105 
  106 void
  107      sctp_update_acked(struct sctp_tcb *, struct sctp_shutdown_chunk *, int *);
  108 
  109 int
  110 sctp_process_data(struct mbuf **, int, int *, int,
  111     struct sctp_inpcb *, struct sctp_tcb *,
  112     struct sctp_nets *, uint32_t *);
  113 
  114 void sctp_slide_mapping_arrays(struct sctp_tcb *stcb);
  115 
  116 void sctp_sack_check(struct sctp_tcb *, int);
  117 
  118 #endif
  119 #endif

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