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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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f4538e24b6
There are problems with global shared state and no API stability guarantees, and we can't rely on distros shipping the fixes we need. Both firefox and Chrome bundle their own copies too. Imported from https://github.com/sctplab/usrsctp, commit 547d3b46c64876c0336b9eef297fda58dbe1adaf Date: Thu Jul 23 21:49:32 2020 +0200 Fixes https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/issues/870 Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1465>
125 lines
4.4 KiB
C
125 lines
4.4 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
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* Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
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* Copyright (c) 2008-2012, by Michael Tuexen. 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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#if defined(__FreeBSD__) && !defined(__Userspace__)
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD: head/sys/netinet/sctp_indata.h 361116 2020-05-16 19:26:39Z tuexen $");
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#endif
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#ifndef _NETINET_SCTP_INDATA_H_
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#define _NETINET_SCTP_INDATA_H_
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#if defined(_KERNEL) || defined(__Userspace__)
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struct sctp_queued_to_read *
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sctp_build_readq_entry(struct sctp_tcb *stcb,
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struct sctp_nets *net,
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uint32_t tsn, uint32_t ppid,
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uint32_t context, uint16_t sid,
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uint32_t mid, uint8_t flags,
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struct mbuf *dm);
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#define sctp_build_readq_entry_mac(_ctl, in_it, context, net, tsn, ppid, sid, flags, dm, tfsn, mid) do { \
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if (_ctl) { \
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atomic_add_int(&((net)->ref_count), 1); \
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memset(_ctl, 0, sizeof(struct sctp_queued_to_read)); \
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(_ctl)->sinfo_stream = sid; \
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TAILQ_INIT(&_ctl->reasm); \
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(_ctl)->top_fsn = tfsn; \
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(_ctl)->mid = mid; \
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(_ctl)->sinfo_flags = (flags << 8); \
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(_ctl)->sinfo_ppid = ppid; \
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(_ctl)->sinfo_context = context; \
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(_ctl)->fsn_included = 0xffffffff; \
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(_ctl)->sinfo_tsn = tsn; \
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(_ctl)->sinfo_cumtsn = tsn; \
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(_ctl)->sinfo_assoc_id = sctp_get_associd((in_it)); \
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(_ctl)->whoFrom = net; \
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(_ctl)->data = dm; \
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(_ctl)->stcb = (in_it); \
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(_ctl)->port_from = (in_it)->rport; \
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if ((in_it)->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { \
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(_ctl)->do_not_ref_stcb = 1; \
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}\
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} \
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} while (0)
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struct mbuf *
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sctp_build_ctl_nchunk(struct sctp_inpcb *inp,
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struct sctp_sndrcvinfo *sinfo);
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void sctp_set_rwnd(struct sctp_tcb *, struct sctp_association *);
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uint32_t
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sctp_calc_rwnd(struct sctp_tcb *stcb, struct sctp_association *asoc);
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void
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sctp_express_handle_sack(struct sctp_tcb *stcb, uint32_t cumack,
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uint32_t rwnd, int *abort_now, int ecne_seen);
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void
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sctp_handle_sack(struct mbuf *m, int offset_seg, int offset_dup,
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struct sctp_tcb *stcb,
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uint16_t num_seg, uint16_t num_nr_seg, uint16_t num_dup,
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int *abort_now, uint8_t flags,
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uint32_t cum_ack, uint32_t rwnd, int ecne_seen);
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/* draft-ietf-tsvwg-usctp */
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void
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sctp_handle_forward_tsn(struct sctp_tcb *,
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struct sctp_forward_tsn_chunk *, int *, struct mbuf *, int);
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struct sctp_tmit_chunk *
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sctp_try_advance_peer_ack_point(struct sctp_tcb *, struct sctp_association *);
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void sctp_service_queues(struct sctp_tcb *, struct sctp_association *);
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void
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sctp_update_acked(struct sctp_tcb *, struct sctp_shutdown_chunk *, int *);
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int
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sctp_process_data(struct mbuf **, int, int *, int,
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struct sctp_inpcb *, struct sctp_tcb *,
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struct sctp_nets *, uint32_t *);
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void sctp_slide_mapping_arrays(struct sctp_tcb *stcb);
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void sctp_sack_check(struct sctp_tcb *, int);
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#endif
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#endif
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