c4739e2f47
when peer acks the add in case the routing table changes. - Fix sctp_lower_sosend to send shutdown chunk for mbuf send case when sndlen = 0 and sinfoflag = SCTP_EOF - Fix sctp_lower_sosend for SCTP_ABORT mbuf send case with null data, So that it does not send the "null" data mbuf out and cause it to get freed twice. - Fix so auto-asconf sysctl actually effect the socket's asconf state. - Do not allow SCTP_AUTO_ASCONF option to be used on subset bound sockets. - Memset bug in sctp_output.c (arguments were reversed) submitted found and reported by Dave Jones (davej@codemonkey.org.uk). - PD-API point needs to be invoked >= not just > to conform to socket api draft this fixes sctp_indata.c in the two places need to be >=. - move M_NOTIFICATION to use M_PROTO5. - PEER_ADDR_PARAMS did not fail properly if you specify an address that is not in the association with a valid assoc_id. This meant you got or set the stcb level values instead of the destination you thought you were going to get/set. Now validate if the stcb is non-null and the net is NULL that the sa_family is set and the address is unspecified otherwise return an error. - The thread based iterator could crash if associations were freed at the exact time it was running. rework the worker thread to use the increment/decrement to prevent this and no longer use the markers that the timer based iterator uses. - Fix the memleak in sctp_add_addr_to_vrf() for the case when it is detected that ifa is already pointing to a ifn. - Fix it so that if someone is so insane that they drop the send window below the minimal add mark, they still can send. - Changed all state for associations to use mask safe macro. - During front states in association freeing in sctp_inpcbfree, we had a locking problem where locks were not in place where they should have been. - Free association calls were not testing the return value in sctp_inpcb_free() properly... others should be cast void returns where we don't care about the return value. - If a reference count is held on an assoc, even from the "force free" we should not do the actual free.. but instead let the timer free it. - When we enter sctp_input(), if the SCTP_ASOC_ABOUT_TO_BE_FREED flag is set, we must NOT process the packet but handle it like ootb. This is because while freeing an assoc we release the locks to get all the higher order locks so we can purge all the hash tables. This leaves a hole if a packet comes in just at that point. Now sctp_common_input_processing() will call the ootb code in such a case. - Change MBUF M_NOTIFICATION to use M_PROTO5 (per Sam L). This makes it so we don't have a conflict (I think this is a covertity change). We made this change AFTER some conversation and looking to make sure that M_PROTO5 does not have a problem between SCTP and the 802.11 stuff (which is the only other place its used). - Fixed lock order reversal and missing atomic protection around locked_tcb during association lookup and the 1-2-1 model. - Added debug to source address selection. - V6 output must always do checksum even for loopback. - Remove more locks around inp that are not needed for an atomically added/subtracted ref count. - slight optimization in the way we zero the array in sctp_sack_check() - It was possible to respond to a ABORT() with bad checksum with a PKT-DROP. This lead to a PKT-DROP/ABORT war. Add code to NOT send a PKT-DROP to any ABORT(). - Add an option for local logging (useful for macintosh or when you need better performing during debugging). Note no commands are here to get the log info, you must just use kgdb. - The timer code needs to be aware of if it needs to call sctp_sack_check() to slide the maps and adjust the cum-ack. This is because it may be out of sync cum-ack wise. - Added threshold managment logging. - If the user picked just the right size, that just filled the send window minus one mtu, we would enter a forever loop not copying and at the same time not blocking. Change from < to <= solves this. - Sysctl added to control the fragment interleave level which defaults to 1. - My rwnd control was not being used to control the rwnd properly (we did not add and subtract to it :-() this is now fixed so we handle small messages (1 byte etc) better to bring our rwnd down more slowly. Approved by: re@freebsd.org (Bruce Mah)
363 lines
11 KiB
C
363 lines
11 KiB
C
/*-
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* Copyright (c) 2001-2007, by Cisco Systems, Inc. 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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/* $KAME: sctputil.h,v 1.15 2005/03/06 16:04:19 itojun Exp $ */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#ifndef __sctputil_h__
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#define __sctputil_h__
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#if defined(_KERNEL)
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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) || defined(__APPLE__)
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void
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sctp_log_trace(uint32_t fr, const char *str, 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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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 *);
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int sctp_init_asoc(struct sctp_inpcb *, struct sctp_tcb *, int, uint32_t, uint32_t);
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void sctp_fill_random_store(struct sctp_pcb *);
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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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uint32_t sctp_calculate_sum(struct mbuf *, int32_t *, uint32_t);
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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_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
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sctp_append_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 mbuf *m,
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int end,
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int new_cumack,
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struct sockbuf *sb);
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void sctp_iterator_worker(void);
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int find_next_best_mtu(int);
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void
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sctp_timeout_handler(void *);
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uint32_t
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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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int sctp_add_pad_tombuf(struct mbuf *, int);
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int sctp_pad_lastmbuf(struct mbuf *, int, struct mbuf *);
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void sctp_ulp_notify(uint32_t, struct sctp_tcb *, uint32_t, void *);
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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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void sctp_report_all_outbound(struct sctp_tcb *, 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 *, 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 *,
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struct mbuf *, int, struct sctphdr *, struct mbuf *, uint32_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 *, int,
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struct mbuf *);
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void
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sctp_handle_ootb(struct mbuf *, int, int, struct sctphdr *,
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struct sctp_inpcb *, struct mbuf *, uint32_t);
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int
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sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr,
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int totaddr, int *error);
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struct sctp_tcb *
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sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr,
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int *totaddr, int *num_v4, int *num_v6, int *error, int limit, int *bad_addr);
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int sctp_is_there_an_abort_here(struct mbuf *, int, uint32_t *);
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uint32_t sctp_is_same_scope(struct sockaddr_in6 *, struct sockaddr_in6 *);
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struct sockaddr_in6 *
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sctp_recover_scope(struct sockaddr_in6 *, struct sockaddr_in6 *);
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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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int sctp_cmpaddr(struct sockaddr *, struct sockaddr *);
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void sctp_print_address(struct sockaddr *);
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void sctp_print_address_pkt(struct ip *, struct sctphdr *);
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void
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sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb,
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uint32_t error, int no_lock, uint32_t strseq);
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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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int, struct sctpchunk_listhead *);
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struct mbuf *sctp_generate_invmanparam(int);
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void
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sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp,
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struct sockaddr *sa, sctp_assoc_t assoc_id,
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uint32_t vrf_id, int *error, void *p);
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void
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sctp_bindx_delete_address(struct socket *so, struct sctp_inpcb *inp,
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struct sockaddr *sa, sctp_assoc_t assoc_id,
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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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atomic_subtract_int(&(asoc)->chunks_on_out_queue, 1); \
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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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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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/* For those not passing mbufs, this does the
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* translations for you. Caller owns memory
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* of size controllen returned in controlp.
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*/
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int
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sctp_l_soreceive(struct socket *so,
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struct sockaddr **name,
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struct uio *uio,
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char **controlp,
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int *controllen,
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int *flag);
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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 cumtsn,
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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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void
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sctp_log_mb(struct mbuf *m, int from);
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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 socket *, struct sctp_association *, int);
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void sctp_log_rwnd(uint8_t, uint32_t, uint32_t, uint32_t);
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void sctp_log_mbcnt(uint8_t, uint32_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_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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#endif /* _KERNEL */
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#endif
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