mirror of
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>
423 lines
13 KiB
C
423 lines
13 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/sctputil.h 363323 2020-07-19 12:34:19Z tuexen $");
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#endif
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#ifndef _NETINET_SCTP_UTIL_H_
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#define _NETINET_SCTP_UTIL_H_
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#if defined(_KERNEL) || defined(__Userspace__)
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#define SCTP_READ_LOCK_HELD 1
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#define SCTP_READ_LOCK_NOT_HELD 0
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#ifdef SCTP_ASOCLOG_OF_TSNS
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void sctp_print_out_track_log(struct sctp_tcb *stcb);
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#endif
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#ifdef SCTP_MBUF_LOGGING
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struct mbuf *sctp_m_free(struct mbuf *m);
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void sctp_m_freem(struct mbuf *m);
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#else
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#define sctp_m_free m_free
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#define sctp_m_freem m_freem
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#endif
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#if defined(SCTP_LOCAL_TRACE_BUF)
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void
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sctp_log_trace(uint32_t fr, const char *str SCTP_UNUSED, uint32_t a, uint32_t b, uint32_t c, uint32_t d, uint32_t e, uint32_t f);
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#endif
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#define sctp_get_associd(stcb) ((sctp_assoc_t)stcb->asoc.assoc_id)
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/*
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* Function prototypes
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*/
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int32_t
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sctp_map_assoc_state(int);
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uint32_t
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sctp_get_ifa_hash_val(struct sockaddr *addr);
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struct sctp_ifa *
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sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr, int hold_lock);
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struct sctp_ifa *
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sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock);
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uint32_t sctp_select_initial_TSN(struct sctp_pcb *);
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uint32_t sctp_select_a_tag(struct sctp_inpcb *, uint16_t lport, uint16_t rport, int);
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int sctp_init_asoc(struct sctp_inpcb *, struct sctp_tcb *, uint32_t, uint32_t, uint16_t);
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void sctp_fill_random_store(struct sctp_pcb *);
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void
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sctp_notify_stream_reset_add(struct sctp_tcb *stcb, uint16_t numberin,
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uint16_t numberout, int flag);
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void
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sctp_notify_stream_reset_tsn(struct sctp_tcb *stcb, uint32_t sending_tsn, uint32_t recv_tsn, int flag);
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/*
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* NOTE: sctp_timer_start() will increment the reference count of any relevant
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* structure the timer is referencing, in order to prevent a race condition
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* between the timer executing and the structure being freed.
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*
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* When the timer fires or sctp_timer_stop() is called, these references are
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* removed.
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*/
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void
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sctp_timer_start(int, struct sctp_inpcb *, struct sctp_tcb *,
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struct sctp_nets *);
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void
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sctp_timer_stop(int, struct sctp_inpcb *, struct sctp_tcb *,
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struct sctp_nets *, uint32_t);
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int
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sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id);
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void
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sctp_mtu_size_reset(struct sctp_inpcb *, struct sctp_association *, uint32_t);
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void
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sctp_wakeup_the_read_socket(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
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int so_locked
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#if !(defined(__APPLE__) && !defined(__Userspace__))
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SCTP_UNUSED
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#endif
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);
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#if defined(__Userspace__)
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void sctp_invoke_recv_callback(struct sctp_inpcb *,
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struct sctp_tcb *,
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struct sctp_queued_to_read *,
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int);
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#endif
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void
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sctp_add_to_readq(struct sctp_inpcb *inp,
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struct sctp_tcb *stcb,
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struct sctp_queued_to_read *control,
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struct sockbuf *sb,
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int end,
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int inpread_locked,
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int so_locked);
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void sctp_iterator_worker(void);
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uint32_t sctp_get_prev_mtu(uint32_t);
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uint32_t sctp_get_next_mtu(uint32_t);
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void
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sctp_timeout_handler(void *);
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int
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sctp_calculate_rto(struct sctp_tcb *, struct sctp_association *,
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struct sctp_nets *, struct timeval *, int);
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uint32_t sctp_calculate_len(struct mbuf *);
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caddr_t sctp_m_getptr(struct mbuf *, int, int, uint8_t *);
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struct sctp_paramhdr *
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sctp_get_next_param(struct mbuf *, int,
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struct sctp_paramhdr *, int);
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struct mbuf *
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sctp_add_pad_tombuf(struct mbuf *, int);
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struct mbuf *
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sctp_pad_lastmbuf(struct mbuf *, int, struct mbuf *);
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void sctp_ulp_notify(uint32_t, struct sctp_tcb *, uint32_t, void *, int);
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void
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sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp,
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struct sctp_inpcb *new_inp,
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struct sctp_tcb *stcb, int waitflags);
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void sctp_stop_timers_for_shutdown(struct sctp_tcb *);
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/* Stop all timers for association and remote addresses. */
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void sctp_stop_association_timers(struct sctp_tcb *, bool);
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void sctp_report_all_outbound(struct sctp_tcb *, uint16_t, int, int);
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int sctp_expand_mapping_array(struct sctp_association *, uint32_t);
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void sctp_abort_notification(struct sctp_tcb *, uint8_t, uint16_t,
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struct sctp_abort_chunk *, int);
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/* We abort responding to an IP packet for some reason */
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void
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sctp_abort_association(struct sctp_inpcb *, struct sctp_tcb *, struct mbuf *,
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int, struct sockaddr *, struct sockaddr *,
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struct sctphdr *, struct mbuf *,
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#if defined(__FreeBSD__) && !defined(__Userspace__)
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uint8_t, uint32_t,
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#endif
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uint32_t, uint16_t);
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/* We choose to abort via user input */
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void
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sctp_abort_an_association(struct sctp_inpcb *, struct sctp_tcb *,
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struct mbuf *, int);
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void sctp_handle_ootb(struct mbuf *, int, int,
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struct sockaddr *, struct sockaddr *,
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struct sctphdr *, struct sctp_inpcb *,
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struct mbuf *,
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#if defined(__FreeBSD__) && !defined(__Userspace__)
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uint8_t, uint32_t, uint16_t,
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#endif
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uint32_t, uint16_t);
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int sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr,
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int totaddr, int *error);
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int
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sctp_connectx_helper_find(struct sctp_inpcb *, struct sockaddr *,
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unsigned int, unsigned int *, unsigned int *, unsigned int);
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int sctp_is_there_an_abort_here(struct mbuf *, int, uint32_t *);
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#ifdef INET6
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uint32_t sctp_is_same_scope(struct sockaddr_in6 *, struct sockaddr_in6 *);
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#if defined(SCTP_EMBEDDED_V6_SCOPE)
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struct sockaddr_in6 *
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sctp_recover_scope(struct sockaddr_in6 *, struct sockaddr_in6 *);
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#ifdef SCTP_KAME
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#define sctp_recover_scope_mac(addr, store) do { \
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if ((addr->sin6_family == AF_INET6) && \
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(IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr))) { \
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*store = *addr; \
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if (addr->sin6_scope_id == 0) { \
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if (!sa6_recoverscope(store)) { \
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addr = store; \
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} \
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} else { \
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in6_clearscope(&addr->sin6_addr); \
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addr = store; \
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} \
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} \
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} while (0)
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#else
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#define sctp_recover_scope_mac(addr, store) do { \
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if ((addr->sin6_family == AF_INET6) && \
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(IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr))) { \
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*store = *addr; \
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if (addr->sin6_scope_id == 0) { \
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if (!in6_recoverscope(store, &store->sin6_addr, \
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NULL)) { \
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addr = store; \
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} \
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} else { \
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in6_clearscope(&addr->sin6_addr); \
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addr = store; \
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} \
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} \
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} while (0)
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#endif
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#endif
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#endif
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int sctp_cmpaddr(struct sockaddr *, struct sockaddr *);
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void sctp_print_address(struct sockaddr *);
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int
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sctp_release_pr_sctp_chunk(struct sctp_tcb *, struct sctp_tmit_chunk *,
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uint8_t, int);
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struct mbuf *sctp_generate_cause(uint16_t, char *);
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struct mbuf *sctp_generate_no_user_data_cause(uint32_t);
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void sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp,
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struct sockaddr *sa, uint32_t vrf_id, int *error,
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void *p);
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void sctp_bindx_delete_address(struct sctp_inpcb *inp, struct sockaddr *sa,
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uint32_t vrf_id, int *error);
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int sctp_local_addr_count(struct sctp_tcb *stcb);
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#ifdef SCTP_MBCNT_LOGGING
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void
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sctp_free_bufspace(struct sctp_tcb *, struct sctp_association *,
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struct sctp_tmit_chunk *, int);
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#else
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#define sctp_free_bufspace(stcb, asoc, tp1, chk_cnt) \
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do { \
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if (tp1->data != NULL) { \
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atomic_subtract_int(&((asoc)->chunks_on_out_queue), chk_cnt); \
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if ((asoc)->total_output_queue_size >= tp1->book_size) { \
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atomic_subtract_int(&((asoc)->total_output_queue_size), tp1->book_size); \
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} else { \
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(asoc)->total_output_queue_size = 0; \
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} \
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if (stcb->sctp_socket && ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \
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(stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \
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if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) { \
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atomic_subtract_int(&((stcb)->sctp_socket->so_snd.sb_cc), tp1->book_size); \
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} else { \
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stcb->sctp_socket->so_snd.sb_cc = 0; \
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} \
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} \
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} \
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} while (0)
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#endif
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#define sctp_free_spbufspace(stcb, asoc, sp) \
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do { \
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if (sp->data != NULL) { \
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if ((asoc)->total_output_queue_size >= sp->length) { \
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atomic_subtract_int(&(asoc)->total_output_queue_size, sp->length); \
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} else { \
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(asoc)->total_output_queue_size = 0; \
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} \
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if (stcb->sctp_socket && ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \
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(stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \
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if (stcb->sctp_socket->so_snd.sb_cc >= sp->length) { \
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atomic_subtract_int(&stcb->sctp_socket->so_snd.sb_cc,sp->length); \
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} else { \
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stcb->sctp_socket->so_snd.sb_cc = 0; \
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} \
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} \
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} \
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} while (0)
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#define sctp_snd_sb_alloc(stcb, sz) \
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do { \
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atomic_add_int(&stcb->asoc.total_output_queue_size,sz); \
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if ((stcb->sctp_socket != NULL) && \
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((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \
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(stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \
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atomic_add_int(&stcb->sctp_socket->so_snd.sb_cc,sz); \
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} \
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} while (0)
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/* functions to start/stop udp tunneling */
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#if (defined(__APPLE__) || defined(__FreeBSD__)) && !defined(__Userspace__)
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void sctp_over_udp_stop(void);
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int sctp_over_udp_start(void);
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#endif
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#if defined(_WIN32) && !defined(__Userspace__)
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void sctp_over_udp_restart(void);
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#endif
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int
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sctp_soreceive(struct socket *so, struct sockaddr **psa,
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struct uio *uio,
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struct mbuf **mp0,
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struct mbuf **controlp,
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int *flagsp);
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void
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sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d);
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void
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sctp_wakeup_log(struct sctp_tcb *stcb,
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uint32_t wake_cnt, int from);
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void sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t, uint16_t, uint16_t, int);
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void sctp_log_nagle_event(struct sctp_tcb *stcb, int action);
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#ifdef SCTP_MBUF_LOGGING
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void
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sctp_log_mb(struct mbuf *m, int from);
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void
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sctp_log_mbc(struct mbuf *m, int from);
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#endif
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void
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sctp_sblog(struct sockbuf *sb,
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struct sctp_tcb *stcb, int from, int incr);
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void
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sctp_log_strm_del(struct sctp_queued_to_read *control,
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struct sctp_queued_to_read *poschk,
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int from);
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void sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *, int, uint8_t);
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void rto_logging(struct sctp_nets *net, int from);
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void sctp_log_closing(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int16_t loc);
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void sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from);
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void sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *, int, int, uint8_t);
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void sctp_log_block(uint8_t, struct sctp_association *, ssize_t);
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void sctp_log_rwnd(uint8_t, uint32_t, uint32_t, uint32_t);
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void sctp_log_rwnd_set(uint8_t, uint32_t, uint32_t, uint32_t, uint32_t);
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int sctp_fill_stat_log(void *, size_t *);
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void sctp_log_fr(uint32_t, uint32_t, uint32_t, int);
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void sctp_log_sack(uint32_t, uint32_t, uint32_t, uint16_t, uint16_t, int);
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void sctp_log_map(uint32_t, uint32_t, uint32_t, int);
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void sctp_print_mapping_array(struct sctp_association *asoc);
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void sctp_clr_stat_log(void);
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#ifdef SCTP_AUDITING_ENABLED
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void
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sctp_auditing(int, struct sctp_inpcb *, struct sctp_tcb *,
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struct sctp_nets *);
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void sctp_audit_log(uint8_t, uint8_t);
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#endif
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uint32_t sctp_min_mtu(uint32_t, uint32_t, uint32_t);
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#if defined(__FreeBSD__) && !defined(__Userspace__)
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void sctp_hc_set_mtu(union sctp_sockstore *, uint16_t, uint32_t);
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uint32_t sctp_hc_get_mtu(union sctp_sockstore *, uint16_t);
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#endif
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void sctp_set_state(struct sctp_tcb *, int);
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void sctp_add_substate(struct sctp_tcb *, int);
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uint32_t sctp_ticks_to_msecs(uint32_t);
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uint32_t sctp_msecs_to_ticks(uint32_t);
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uint32_t sctp_ticks_to_secs(uint32_t);
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uint32_t sctp_secs_to_ticks(uint32_t);
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#endif /* _KERNEL */
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#endif
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