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

     /*-
      * SPDX-License-Identifier: BSD-3-Clause
      *
      * Copyright (c) 2001-2007, 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 <sys/cdefs.h>
    __FBSDID("$FreeBSD$");
    
    #ifndef _NETINET_SCTP_INDATA_H_
    #define _NETINET_SCTP_INDATA_H_
    
    #if defined(_KERNEL) || defined(__Userspace__)
    
    struct sctp_queued_to_read *
    sctp_build_readq_entry(struct sctp_tcb *stcb,
        struct sctp_nets *net,
        uint32_t tsn, uint32_t ppid,
        uint32_t context, uint16_t sid,
        uint32_t mid, uint8_t flags,
        struct mbuf *dm);
    
    
    #define sctp_build_readq_entry_mac(_ctl, in_it, context, net, tsn, ppid, sid, flags, dm, tfsn, mid) do { \
            if (_ctl) { \
                    atomic_add_int(&((net)->ref_count), 1); \
                    memset(_ctl, 0, sizeof(struct sctp_queued_to_read)); \
                    (_ctl)->sinfo_stream = sid; \
                    TAILQ_INIT(&_ctl->reasm); \
                    (_ctl)->top_fsn = tfsn; \
                    (_ctl)->mid = mid; \
                    (_ctl)->sinfo_flags = (flags << 8); \
                    (_ctl)->sinfo_ppid = ppid; \
                    (_ctl)->sinfo_context = context; \
                    (_ctl)->fsn_included = 0xffffffff; \
                    (_ctl)->sinfo_tsn = tsn; \
                    (_ctl)->sinfo_cumtsn = tsn; \
                    (_ctl)->sinfo_assoc_id = sctp_get_associd((in_it)); \
                    (_ctl)->whoFrom = net; \
                    (_ctl)->data = dm; \
                    (_ctl)->stcb = (in_it); \
                    (_ctl)->port_from = (in_it)->rport; \
                    if ((in_it)->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { \
                            (_ctl)->do_not_ref_stcb = 1; \
                    }\
            } \
    } while (0)
    
    
    
    struct mbuf *
    sctp_build_ctl_nchunk(struct sctp_inpcb *inp,
        struct sctp_sndrcvinfo *sinfo);
    
    void sctp_set_rwnd(struct sctp_tcb *, struct sctp_association *);
    
    uint32_t
             sctp_calc_rwnd(struct sctp_tcb *stcb, struct sctp_association *asoc);
    
    void
    sctp_express_handle_sack(struct sctp_tcb *stcb, uint32_t cumack,
        uint32_t rwnd, int *abort_now, int ecne_seen);
    
    void
    sctp_handle_sack(struct mbuf *m, int offset_seg, int offset_dup,
        struct sctp_tcb *stcb,
        uint16_t num_seg, uint16_t num_nr_seg, uint16_t num_dup,
        int *abort_now, uint8_t flags,
        uint32_t cum_ack, uint32_t rwnd, int ecne_seen);
    
    /* draft-ietf-tsvwg-usctp */
   void
   sctp_handle_forward_tsn(struct sctp_tcb *,
       struct sctp_forward_tsn_chunk *, int *, struct mbuf *, int);
   
   struct sctp_tmit_chunk *sctp_try_advance_peer_ack_point(struct sctp_tcb *, struct sctp_association *);
   
   void sctp_service_queues(struct sctp_tcb *, struct sctp_association *);
   
   void
        sctp_update_acked(struct sctp_tcb *, struct sctp_shutdown_chunk *, int *);
   
   int
   sctp_process_data(struct mbuf **, int, int *, int,
       struct sctp_inpcb *, struct sctp_tcb *,
       struct sctp_nets *, uint32_t *);
   
   void sctp_slide_mapping_arrays(struct sctp_tcb *stcb);
   
   void sctp_sack_check(struct sctp_tcb *, int);
   
   #endif
   #endif

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