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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>
448 lines
15 KiB
C
448 lines
15 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 2001-2008, 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_var.h 363323 2020-07-19 12:34:19Z tuexen $");
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#endif
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#ifndef _NETINET_SCTP_VAR_H_
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#define _NETINET_SCTP_VAR_H_
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#include <netinet/sctp_uio.h>
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#if defined(_KERNEL) || defined(__Userspace__)
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#if !defined(__Userspace__)
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extern struct pr_usrreqs sctp_usrreqs;
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#endif
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#define sctp_feature_on(inp, feature) (inp->sctp_features |= feature)
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#define sctp_feature_off(inp, feature) (inp->sctp_features &= ~feature)
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#define sctp_is_feature_on(inp, feature) ((inp->sctp_features & feature) == feature)
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#define sctp_is_feature_off(inp, feature) ((inp->sctp_features & feature) == 0)
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#define sctp_stcb_feature_on(inp, stcb, feature) {\
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if (stcb) { \
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stcb->asoc.sctp_features |= feature; \
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} else if (inp) { \
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inp->sctp_features |= feature; \
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} \
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}
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#define sctp_stcb_feature_off(inp, stcb, feature) {\
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if (stcb) { \
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stcb->asoc.sctp_features &= ~feature; \
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} else if (inp) { \
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inp->sctp_features &= ~feature; \
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} \
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}
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#define sctp_stcb_is_feature_on(inp, stcb, feature) \
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(((stcb != NULL) && \
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((stcb->asoc.sctp_features & feature) == feature)) || \
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((stcb == NULL) && (inp != NULL) && \
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((inp->sctp_features & feature) == feature)))
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#define sctp_stcb_is_feature_off(inp, stcb, feature) \
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(((stcb != NULL) && \
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((stcb->asoc.sctp_features & feature) == 0)) || \
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((stcb == NULL) && (inp != NULL) && \
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((inp->sctp_features & feature) == 0)) || \
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((stcb == NULL) && (inp == NULL)))
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/* managing mobility_feature in inpcb (by micchie) */
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#define sctp_mobility_feature_on(inp, feature) (inp->sctp_mobility_features |= feature)
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#define sctp_mobility_feature_off(inp, feature) (inp->sctp_mobility_features &= ~feature)
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#define sctp_is_mobility_feature_on(inp, feature) (inp->sctp_mobility_features & feature)
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#define sctp_is_mobility_feature_off(inp, feature) ((inp->sctp_mobility_features & feature) == 0)
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#define sctp_maxspace(sb) (max((sb)->sb_hiwat,SCTP_MINIMAL_RWND))
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#define sctp_sbspace(asoc, sb) ((long) ((sctp_maxspace(sb) > (asoc)->sb_cc) ? (sctp_maxspace(sb) - (asoc)->sb_cc) : 0))
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#define sctp_sbspace_failedmsgs(sb) ((long) ((sctp_maxspace(sb) > (sb)->sb_cc) ? (sctp_maxspace(sb) - (sb)->sb_cc) : 0))
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#define sctp_sbspace_sub(a,b) (((a) > (b)) ? ((a) - (b)) : 0)
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/*
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* I tried to cache the readq entries at one point. But the reality
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* is that it did not add any performance since this meant we had to
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* lock the STCB on read. And at that point once you have to do an
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* extra lock, it really does not matter if the lock is in the ZONE
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* stuff or in our code. Note that this same problem would occur with
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* an mbuf cache as well so it is not really worth doing, at least
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* right now :-D
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*/
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#ifdef INVARIANTS
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#define sctp_free_a_readq(_stcb, _readq) { \
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if ((_readq)->on_strm_q) \
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panic("On strm q stcb:%p readq:%p", (_stcb), (_readq)); \
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SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), (_readq)); \
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SCTP_DECR_READQ_COUNT(); \
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}
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#else
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#define sctp_free_a_readq(_stcb, _readq) { \
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SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), (_readq)); \
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SCTP_DECR_READQ_COUNT(); \
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}
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#endif
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#define sctp_alloc_a_readq(_stcb, _readq) { \
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(_readq) = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_readq), struct sctp_queued_to_read); \
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if ((_readq)) { \
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SCTP_INCR_READQ_COUNT(); \
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} \
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}
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#define sctp_free_a_strmoq(_stcb, _strmoq, _so_locked) { \
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if ((_strmoq)->holds_key_ref) { \
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sctp_auth_key_release(stcb, sp->auth_keyid, _so_locked); \
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(_strmoq)->holds_key_ref = 0; \
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} \
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SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_strmoq), (_strmoq)); \
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SCTP_DECR_STRMOQ_COUNT(); \
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}
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#define sctp_alloc_a_strmoq(_stcb, _strmoq) { \
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(_strmoq) = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_strmoq), struct sctp_stream_queue_pending); \
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if ((_strmoq)) { \
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memset(_strmoq, 0, sizeof(struct sctp_stream_queue_pending)); \
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SCTP_INCR_STRMOQ_COUNT(); \
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(_strmoq)->holds_key_ref = 0; \
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} \
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}
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#define sctp_free_a_chunk(_stcb, _chk, _so_locked) { \
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if ((_chk)->holds_key_ref) {\
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sctp_auth_key_release((_stcb), (_chk)->auth_keyid, _so_locked); \
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(_chk)->holds_key_ref = 0; \
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} \
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if (_stcb) { \
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SCTP_TCB_LOCK_ASSERT((_stcb)); \
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if ((_chk)->whoTo) { \
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sctp_free_remote_addr((_chk)->whoTo); \
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(_chk)->whoTo = NULL; \
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} \
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if (((_stcb)->asoc.free_chunk_cnt > SCTP_BASE_SYSCTL(sctp_asoc_free_resc_limit)) || \
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(SCTP_BASE_INFO(ipi_free_chunks) > SCTP_BASE_SYSCTL(sctp_system_free_resc_limit))) { \
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SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), (_chk)); \
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SCTP_DECR_CHK_COUNT(); \
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} else { \
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TAILQ_INSERT_TAIL(&(_stcb)->asoc.free_chunks, (_chk), sctp_next); \
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(_stcb)->asoc.free_chunk_cnt++; \
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atomic_add_int(&SCTP_BASE_INFO(ipi_free_chunks), 1); \
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} \
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} else { \
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SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), (_chk)); \
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SCTP_DECR_CHK_COUNT(); \
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} \
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}
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#define sctp_alloc_a_chunk(_stcb, _chk) { \
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if (TAILQ_EMPTY(&(_stcb)->asoc.free_chunks)) { \
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(_chk) = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_chunk), struct sctp_tmit_chunk); \
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if ((_chk)) { \
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SCTP_INCR_CHK_COUNT(); \
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(_chk)->whoTo = NULL; \
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(_chk)->holds_key_ref = 0; \
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} \
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} else { \
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(_chk) = TAILQ_FIRST(&(_stcb)->asoc.free_chunks); \
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TAILQ_REMOVE(&(_stcb)->asoc.free_chunks, (_chk), sctp_next); \
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atomic_subtract_int(&SCTP_BASE_INFO(ipi_free_chunks), 1); \
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(_chk)->holds_key_ref = 0; \
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SCTP_STAT_INCR(sctps_cached_chk); \
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(_stcb)->asoc.free_chunk_cnt--; \
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} \
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}
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#if defined(__FreeBSD__) && !defined(__Userspace__)
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#define sctp_free_remote_addr(__net) { \
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if ((__net)) { \
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if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&(__net)->ref_count)) { \
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RO_NHFREE(&(__net)->ro); \
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if ((__net)->src_addr_selected) { \
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sctp_free_ifa((__net)->ro._s_addr); \
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(__net)->ro._s_addr = NULL; \
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} \
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(__net)->src_addr_selected = 0; \
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(__net)->dest_state &= ~SCTP_ADDR_REACHABLE; \
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SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_net), (__net)); \
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SCTP_DECR_RADDR_COUNT(); \
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} \
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} \
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}
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#define sctp_sbfree(ctl, stcb, sb, m) { \
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SCTP_SAVE_ATOMIC_DECREMENT(&(sb)->sb_cc, SCTP_BUF_LEN((m))); \
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SCTP_SAVE_ATOMIC_DECREMENT(&(sb)->sb_mbcnt, MSIZE); \
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if (((ctl)->do_not_ref_stcb == 0) && stcb) {\
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SCTP_SAVE_ATOMIC_DECREMENT(&(stcb)->asoc.sb_cc, SCTP_BUF_LEN((m))); \
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SCTP_SAVE_ATOMIC_DECREMENT(&(stcb)->asoc.my_rwnd_control_len, MSIZE); \
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} \
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if (SCTP_BUF_TYPE(m) != MT_DATA && SCTP_BUF_TYPE(m) != MT_HEADER && \
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SCTP_BUF_TYPE(m) != MT_OOBDATA) \
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atomic_subtract_int(&(sb)->sb_ctl,SCTP_BUF_LEN((m))); \
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}
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#define sctp_sballoc(stcb, sb, m) { \
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atomic_add_int(&(sb)->sb_cc,SCTP_BUF_LEN((m))); \
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atomic_add_int(&(sb)->sb_mbcnt, MSIZE); \
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if (stcb) { \
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atomic_add_int(&(stcb)->asoc.sb_cc, SCTP_BUF_LEN((m))); \
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atomic_add_int(&(stcb)->asoc.my_rwnd_control_len, MSIZE); \
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} \
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if (SCTP_BUF_TYPE(m) != MT_DATA && SCTP_BUF_TYPE(m) != MT_HEADER && \
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SCTP_BUF_TYPE(m) != MT_OOBDATA) \
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atomic_add_int(&(sb)->sb_ctl,SCTP_BUF_LEN((m))); \
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}
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#else /* FreeBSD Version <= 500000 or non-FreeBSD */
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#define sctp_free_remote_addr(__net) { \
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if ((__net)) { \
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if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&(__net)->ref_count)) { \
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if ((__net)->ro.ro_rt) { \
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RTFREE((__net)->ro.ro_rt); \
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(__net)->ro.ro_rt = NULL; \
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} \
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if ((__net)->src_addr_selected) { \
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sctp_free_ifa((__net)->ro._s_addr); \
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(__net)->ro._s_addr = NULL; \
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} \
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(__net)->src_addr_selected = 0; \
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(__net)->dest_state &=~SCTP_ADDR_REACHABLE; \
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SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_net), (__net)); \
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SCTP_DECR_RADDR_COUNT(); \
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} \
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} \
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}
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#define sctp_sbfree(ctl, stcb, sb, m) { \
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SCTP_SAVE_ATOMIC_DECREMENT(&(sb)->sb_cc, SCTP_BUF_LEN((m))); \
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SCTP_SAVE_ATOMIC_DECREMENT(&(sb)->sb_mbcnt, MSIZE); \
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if (((ctl)->do_not_ref_stcb == 0) && stcb) { \
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SCTP_SAVE_ATOMIC_DECREMENT(&(stcb)->asoc.sb_cc, SCTP_BUF_LEN((m))); \
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SCTP_SAVE_ATOMIC_DECREMENT(&(stcb)->asoc.my_rwnd_control_len, MSIZE); \
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} \
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}
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#define sctp_sballoc(stcb, sb, m) { \
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atomic_add_int(&(sb)->sb_cc, SCTP_BUF_LEN((m))); \
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atomic_add_int(&(sb)->sb_mbcnt, MSIZE); \
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if (stcb) { \
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atomic_add_int(&(stcb)->asoc.sb_cc, SCTP_BUF_LEN((m))); \
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atomic_add_int(&(stcb)->asoc.my_rwnd_control_len, MSIZE); \
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} \
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}
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#endif
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#define sctp_ucount_incr(val) { \
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val++; \
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}
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#define sctp_ucount_decr(val) { \
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if (val > 0) { \
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val--; \
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} else { \
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val = 0; \
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} \
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}
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#define sctp_mbuf_crush(data) do { \
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struct mbuf *_m; \
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_m = (data); \
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while (_m && (SCTP_BUF_LEN(_m) == 0)) { \
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(data) = SCTP_BUF_NEXT(_m); \
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SCTP_BUF_NEXT(_m) = NULL; \
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sctp_m_free(_m); \
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_m = (data); \
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} \
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} while (0)
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#define sctp_flight_size_decrease(tp1) do { \
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if (tp1->whoTo->flight_size >= tp1->book_size) \
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tp1->whoTo->flight_size -= tp1->book_size; \
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else \
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tp1->whoTo->flight_size = 0; \
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} while (0)
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#define sctp_flight_size_increase(tp1) do { \
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(tp1)->whoTo->flight_size += (tp1)->book_size; \
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} while (0)
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#ifdef SCTP_FS_SPEC_LOG
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#define sctp_total_flight_decrease(stcb, tp1) do { \
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if (stcb->asoc.fs_index > SCTP_FS_SPEC_LOG_SIZE) \
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stcb->asoc.fs_index = 0;\
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stcb->asoc.fslog[stcb->asoc.fs_index].total_flight = stcb->asoc.total_flight; \
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stcb->asoc.fslog[stcb->asoc.fs_index].tsn = tp1->rec.data.tsn; \
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stcb->asoc.fslog[stcb->asoc.fs_index].book = tp1->book_size; \
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stcb->asoc.fslog[stcb->asoc.fs_index].sent = tp1->sent; \
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stcb->asoc.fslog[stcb->asoc.fs_index].incr = 0; \
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stcb->asoc.fslog[stcb->asoc.fs_index].decr = 1; \
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stcb->asoc.fs_index++; \
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tp1->window_probe = 0; \
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if (stcb->asoc.total_flight >= tp1->book_size) { \
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stcb->asoc.total_flight -= tp1->book_size; \
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if (stcb->asoc.total_flight_count > 0) \
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stcb->asoc.total_flight_count--; \
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} else { \
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stcb->asoc.total_flight = 0; \
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stcb->asoc.total_flight_count = 0; \
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} \
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} while (0)
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#define sctp_total_flight_increase(stcb, tp1) do { \
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if (stcb->asoc.fs_index > SCTP_FS_SPEC_LOG_SIZE) \
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stcb->asoc.fs_index = 0;\
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stcb->asoc.fslog[stcb->asoc.fs_index].total_flight = stcb->asoc.total_flight; \
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stcb->asoc.fslog[stcb->asoc.fs_index].tsn = tp1->rec.data.tsn; \
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stcb->asoc.fslog[stcb->asoc.fs_index].book = tp1->book_size; \
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stcb->asoc.fslog[stcb->asoc.fs_index].sent = tp1->sent; \
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stcb->asoc.fslog[stcb->asoc.fs_index].incr = 1; \
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stcb->asoc.fslog[stcb->asoc.fs_index].decr = 0; \
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stcb->asoc.fs_index++; \
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(stcb)->asoc.total_flight_count++; \
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(stcb)->asoc.total_flight += (tp1)->book_size; \
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} while (0)
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#else
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#define sctp_total_flight_decrease(stcb, tp1) do { \
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tp1->window_probe = 0; \
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if (stcb->asoc.total_flight >= tp1->book_size) { \
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stcb->asoc.total_flight -= tp1->book_size; \
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if (stcb->asoc.total_flight_count > 0) \
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stcb->asoc.total_flight_count--; \
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} else { \
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stcb->asoc.total_flight = 0; \
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stcb->asoc.total_flight_count = 0; \
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} \
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} while (0)
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#define sctp_total_flight_increase(stcb, tp1) do { \
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(stcb)->asoc.total_flight_count++; \
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(stcb)->asoc.total_flight += (tp1)->book_size; \
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} while (0)
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#endif
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#define SCTP_PF_ENABLED(_net) (_net->pf_threshold < _net->failure_threshold)
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#define SCTP_NET_IS_PF(_net) (_net->pf_threshold < _net->error_count)
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struct sctp_nets;
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struct sctp_inpcb;
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struct sctp_tcb;
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struct sctphdr;
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#if defined(__FreeBSD__) || defined(_WIN32) || defined(__Userspace__)
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void sctp_close(struct socket *so);
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#else
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int sctp_detach(struct socket *so);
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#endif
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int sctp_disconnect(struct socket *so);
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#if !defined(__Userspace__)
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#if defined(__APPLE__) && !defined(APPLE_LEOPARD) && !defined(APPLE_SNOWLEOPARD) && !defined(APPLE_LION) && !defined(APPLE_MOUNTAINLION) && !defined(APPLE_ELCAPITAN)
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void sctp_ctlinput(int, struct sockaddr *, void *, struct ifnet * SCTP_UNUSED);
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#else
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void sctp_ctlinput(int, struct sockaddr *, void *);
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#endif
|
|
int sctp_ctloutput(struct socket *, struct sockopt *);
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|
#ifdef INET
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|
void sctp_input_with_port(struct mbuf *, int, uint16_t);
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|
#if defined(__FreeBSD__) && !defined(__Userspace__)
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|
int sctp_input(struct mbuf **, int *, int);
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|
#else
|
|
void sctp_input(struct mbuf *, int);
|
|
#endif
|
|
#endif
|
|
void sctp_pathmtu_adjustment(struct sctp_tcb *, uint16_t);
|
|
#else
|
|
#if defined(__Userspace__)
|
|
void sctp_pathmtu_adjustment(struct sctp_tcb *, uint16_t);
|
|
#else
|
|
void sctp_input(struct mbuf *,...);
|
|
#endif
|
|
void *sctp_ctlinput(int, struct sockaddr *, void *);
|
|
int sctp_ctloutput(int, struct socket *, int, int, struct mbuf **);
|
|
#endif
|
|
void sctp_drain(void);
|
|
#if defined(__Userspace__)
|
|
void sctp_init(uint16_t,
|
|
int (*)(void *addr, void *buffer, size_t length, uint8_t tos, uint8_t set_df),
|
|
void (*)(const char *, ...), int start_threads);
|
|
#elif defined(__APPLE__) && (!defined(APPLE_LEOPARD) && !defined(APPLE_SNOWLEOPARD) &&!defined(APPLE_LION) && !defined(APPLE_MOUNTAINLION))
|
|
void sctp_init(struct protosw *pp, struct domain *dp);
|
|
#else
|
|
void sctp_init(void);
|
|
void sctp_notify(struct sctp_inpcb *, struct sctp_tcb *, struct sctp_nets *,
|
|
uint8_t, uint8_t, uint16_t, uint32_t);
|
|
#endif
|
|
#if !defined(__FreeBSD__) && !defined(__Userspace__)
|
|
void sctp_finish(void);
|
|
#endif
|
|
#if defined(__FreeBSD__) || defined(_WIN32) || defined(__Userspace__)
|
|
int sctp_flush(struct socket *, int);
|
|
#endif
|
|
int sctp_shutdown(struct socket *);
|
|
int sctp_bindx(struct socket *, int, struct sockaddr_storage *,
|
|
int, int, struct proc *);
|
|
/* can't use sctp_assoc_t here */
|
|
int sctp_peeloff(struct socket *, struct socket *, int, caddr_t, int *);
|
|
#if !defined(__Userspace__)
|
|
int sctp_ingetaddr(struct socket *, struct sockaddr **);
|
|
#else
|
|
int sctp_ingetaddr(struct socket *, struct mbuf *);
|
|
#endif
|
|
#if !defined(__Userspace__)
|
|
int sctp_peeraddr(struct socket *, struct sockaddr **);
|
|
#else
|
|
int sctp_peeraddr(struct socket *, struct mbuf *);
|
|
#endif
|
|
#if defined(__FreeBSD__) && !defined(__Userspace__)
|
|
int sctp_listen(struct socket *, int, struct thread *);
|
|
#elif defined(_WIN32) && !defined(__Userspace__)
|
|
int sctp_listen(struct socket *, int, PKTHREAD);
|
|
#elif defined(__Userspace__)
|
|
int sctp_listen(struct socket *, int, struct proc *);
|
|
#else
|
|
int sctp_listen(struct socket *, struct proc *);
|
|
#endif
|
|
int sctp_accept(struct socket *, struct sockaddr **);
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* !_NETINET_SCTP_VAR_H_ */
|