6779 lines
181 KiB
C
6779 lines
181 KiB
C
/*-
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* Copyright (c) 2001-2008, 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.c,v 1.37 2005/03/07 23:26:09 itojun Exp $ */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <netinet/sctp_os.h>
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#include <netinet/sctp_pcb.h>
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#include <netinet/sctputil.h>
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#include <netinet/sctp_var.h>
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#include <netinet/sctp_sysctl.h>
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#ifdef INET6
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#endif
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#include <netinet/sctp_header.h>
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#include <netinet/sctp_output.h>
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#include <netinet/sctp_uio.h>
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#include <netinet/sctp_timer.h>
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#include <netinet/sctp_indata.h>/* for sctp_deliver_data() */
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#include <netinet/sctp_auth.h>
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#include <netinet/sctp_asconf.h>
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#include <netinet/sctp_cc_functions.h>
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#define NUMBER_OF_MTU_SIZES 18
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#if defined(__Windows__) && !defined(SCTP_LOCAL_TRACE_BUF)
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#include "eventrace_netinet.h"
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#include "sctputil.tmh" /* this is the file that will be auto
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* generated */
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#else
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#ifndef KTR_SCTP
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#define KTR_SCTP KTR_SUBSYS
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#endif
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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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{
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struct sctp_cwnd_log sctp_clog;
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sctp_clog.x.sb.stcb = stcb;
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sctp_clog.x.sb.so_sbcc = sb->sb_cc;
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if (stcb)
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sctp_clog.x.sb.stcb_sbcc = stcb->asoc.sb_cc;
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else
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sctp_clog.x.sb.stcb_sbcc = 0;
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sctp_clog.x.sb.incr = incr;
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SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
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SCTP_LOG_EVENT_SB,
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from,
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sctp_clog.x.misc.log1,
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sctp_clog.x.misc.log2,
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sctp_clog.x.misc.log3,
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sctp_clog.x.misc.log4);
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}
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void
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sctp_log_closing(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int16_t loc)
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{
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struct sctp_cwnd_log sctp_clog;
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sctp_clog.x.close.inp = (void *)inp;
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sctp_clog.x.close.sctp_flags = inp->sctp_flags;
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if (stcb) {
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sctp_clog.x.close.stcb = (void *)stcb;
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sctp_clog.x.close.state = (uint16_t) stcb->asoc.state;
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} else {
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sctp_clog.x.close.stcb = 0;
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sctp_clog.x.close.state = 0;
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}
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sctp_clog.x.close.loc = loc;
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SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
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SCTP_LOG_EVENT_CLOSE,
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0,
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sctp_clog.x.misc.log1,
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sctp_clog.x.misc.log2,
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sctp_clog.x.misc.log3,
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sctp_clog.x.misc.log4);
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}
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void
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rto_logging(struct sctp_nets *net, int from)
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{
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struct sctp_cwnd_log sctp_clog;
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memset(&sctp_clog, 0, sizeof(sctp_clog));
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sctp_clog.x.rto.net = (void *)net;
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sctp_clog.x.rto.rtt = net->prev_rtt;
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SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
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SCTP_LOG_EVENT_RTT,
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from,
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sctp_clog.x.misc.log1,
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sctp_clog.x.misc.log2,
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sctp_clog.x.misc.log3,
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sctp_clog.x.misc.log4);
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}
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void
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sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t tsn, uint16_t sseq, uint16_t stream, int from)
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{
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struct sctp_cwnd_log sctp_clog;
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sctp_clog.x.strlog.stcb = stcb;
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sctp_clog.x.strlog.n_tsn = tsn;
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sctp_clog.x.strlog.n_sseq = sseq;
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sctp_clog.x.strlog.e_tsn = 0;
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sctp_clog.x.strlog.e_sseq = 0;
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sctp_clog.x.strlog.strm = stream;
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SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
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SCTP_LOG_EVENT_STRM,
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from,
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sctp_clog.x.misc.log1,
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sctp_clog.x.misc.log2,
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sctp_clog.x.misc.log3,
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sctp_clog.x.misc.log4);
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}
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void
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sctp_log_nagle_event(struct sctp_tcb *stcb, int action)
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{
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struct sctp_cwnd_log sctp_clog;
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sctp_clog.x.nagle.stcb = (void *)stcb;
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sctp_clog.x.nagle.total_flight = stcb->asoc.total_flight;
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sctp_clog.x.nagle.total_in_queue = stcb->asoc.total_output_queue_size;
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sctp_clog.x.nagle.count_in_queue = stcb->asoc.chunks_on_out_queue;
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sctp_clog.x.nagle.count_in_flight = stcb->asoc.total_flight_count;
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SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
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SCTP_LOG_EVENT_NAGLE,
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action,
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sctp_clog.x.misc.log1,
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sctp_clog.x.misc.log2,
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sctp_clog.x.misc.log3,
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sctp_clog.x.misc.log4);
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}
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void
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sctp_log_sack(uint32_t old_cumack, uint32_t cumack, uint32_t tsn, uint16_t gaps, uint16_t dups, int from)
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{
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struct sctp_cwnd_log sctp_clog;
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sctp_clog.x.sack.cumack = cumack;
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sctp_clog.x.sack.oldcumack = old_cumack;
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sctp_clog.x.sack.tsn = tsn;
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sctp_clog.x.sack.numGaps = gaps;
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sctp_clog.x.sack.numDups = dups;
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SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
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SCTP_LOG_EVENT_SACK,
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from,
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sctp_clog.x.misc.log1,
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sctp_clog.x.misc.log2,
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sctp_clog.x.misc.log3,
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sctp_clog.x.misc.log4);
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}
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void
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sctp_log_map(uint32_t map, uint32_t cum, uint32_t high, int from)
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{
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struct sctp_cwnd_log sctp_clog;
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memset(&sctp_clog, 0, sizeof(sctp_clog));
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sctp_clog.x.map.base = map;
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sctp_clog.x.map.cum = cum;
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sctp_clog.x.map.high = high;
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SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
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SCTP_LOG_EVENT_MAP,
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from,
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sctp_clog.x.misc.log1,
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sctp_clog.x.misc.log2,
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sctp_clog.x.misc.log3,
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sctp_clog.x.misc.log4);
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}
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void
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sctp_log_fr(uint32_t biggest_tsn, uint32_t biggest_new_tsn, uint32_t tsn,
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int from)
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{
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struct sctp_cwnd_log sctp_clog;
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memset(&sctp_clog, 0, sizeof(sctp_clog));
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sctp_clog.x.fr.largest_tsn = biggest_tsn;
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sctp_clog.x.fr.largest_new_tsn = biggest_new_tsn;
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sctp_clog.x.fr.tsn = tsn;
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SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
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SCTP_LOG_EVENT_FR,
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from,
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sctp_clog.x.misc.log1,
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sctp_clog.x.misc.log2,
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sctp_clog.x.misc.log3,
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sctp_clog.x.misc.log4);
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}
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void
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sctp_log_mb(struct mbuf *m, int from)
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{
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struct sctp_cwnd_log sctp_clog;
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sctp_clog.x.mb.mp = m;
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sctp_clog.x.mb.mbuf_flags = (uint8_t) (SCTP_BUF_GET_FLAGS(m));
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sctp_clog.x.mb.size = (uint16_t) (SCTP_BUF_LEN(m));
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sctp_clog.x.mb.data = SCTP_BUF_AT(m, 0);
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if (SCTP_BUF_IS_EXTENDED(m)) {
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sctp_clog.x.mb.ext = SCTP_BUF_EXTEND_BASE(m);
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sctp_clog.x.mb.refcnt = (uint8_t) (SCTP_BUF_EXTEND_REFCNT(m));
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} else {
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sctp_clog.x.mb.ext = 0;
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sctp_clog.x.mb.refcnt = 0;
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}
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SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
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SCTP_LOG_EVENT_MBUF,
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from,
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sctp_clog.x.misc.log1,
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sctp_clog.x.misc.log2,
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sctp_clog.x.misc.log3,
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sctp_clog.x.misc.log4);
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}
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void
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sctp_log_strm_del(struct sctp_queued_to_read *control, struct sctp_queued_to_read *poschk,
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int from)
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{
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struct sctp_cwnd_log sctp_clog;
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if (control == NULL) {
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SCTP_PRINTF("Gak log of NULL?\n");
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return;
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}
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sctp_clog.x.strlog.stcb = control->stcb;
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sctp_clog.x.strlog.n_tsn = control->sinfo_tsn;
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sctp_clog.x.strlog.n_sseq = control->sinfo_ssn;
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sctp_clog.x.strlog.strm = control->sinfo_stream;
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if (poschk != NULL) {
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sctp_clog.x.strlog.e_tsn = poschk->sinfo_tsn;
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sctp_clog.x.strlog.e_sseq = poschk->sinfo_ssn;
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} else {
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sctp_clog.x.strlog.e_tsn = 0;
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sctp_clog.x.strlog.e_sseq = 0;
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}
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SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
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SCTP_LOG_EVENT_STRM,
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from,
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sctp_clog.x.misc.log1,
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sctp_clog.x.misc.log2,
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sctp_clog.x.misc.log3,
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sctp_clog.x.misc.log4);
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}
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void
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sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *net, int augment, uint8_t from)
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{
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struct sctp_cwnd_log sctp_clog;
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sctp_clog.x.cwnd.net = net;
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if (stcb->asoc.send_queue_cnt > 255)
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sctp_clog.x.cwnd.cnt_in_send = 255;
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else
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sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt;
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if (stcb->asoc.stream_queue_cnt > 255)
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sctp_clog.x.cwnd.cnt_in_str = 255;
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else
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sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt;
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if (net) {
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sctp_clog.x.cwnd.cwnd_new_value = net->cwnd;
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sctp_clog.x.cwnd.inflight = net->flight_size;
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sctp_clog.x.cwnd.pseudo_cumack = net->pseudo_cumack;
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sctp_clog.x.cwnd.meets_pseudo_cumack = net->new_pseudo_cumack;
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sctp_clog.x.cwnd.need_new_pseudo_cumack = net->find_pseudo_cumack;
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}
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if (SCTP_CWNDLOG_PRESEND == from) {
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sctp_clog.x.cwnd.meets_pseudo_cumack = stcb->asoc.peers_rwnd;
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}
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sctp_clog.x.cwnd.cwnd_augment = augment;
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SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
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SCTP_LOG_EVENT_CWND,
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from,
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sctp_clog.x.misc.log1,
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sctp_clog.x.misc.log2,
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sctp_clog.x.misc.log3,
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sctp_clog.x.misc.log4);
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}
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void
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sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from)
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{
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struct sctp_cwnd_log sctp_clog;
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memset(&sctp_clog, 0, sizeof(sctp_clog));
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if (inp) {
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sctp_clog.x.lock.sock = (void *)inp->sctp_socket;
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} else {
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sctp_clog.x.lock.sock = (void *)NULL;
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}
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sctp_clog.x.lock.inp = (void *)inp;
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if (stcb) {
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sctp_clog.x.lock.tcb_lock = mtx_owned(&stcb->tcb_mtx);
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} else {
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sctp_clog.x.lock.tcb_lock = SCTP_LOCK_UNKNOWN;
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}
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if (inp) {
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sctp_clog.x.lock.inp_lock = mtx_owned(&inp->inp_mtx);
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sctp_clog.x.lock.create_lock = mtx_owned(&inp->inp_create_mtx);
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} else {
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sctp_clog.x.lock.inp_lock = SCTP_LOCK_UNKNOWN;
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sctp_clog.x.lock.create_lock = SCTP_LOCK_UNKNOWN;
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}
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sctp_clog.x.lock.info_lock = rw_wowned(&SCTP_BASE_INFO(ipi_ep_mtx));
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if (inp->sctp_socket) {
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sctp_clog.x.lock.sock_lock = mtx_owned(&(inp->sctp_socket->so_rcv.sb_mtx));
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sctp_clog.x.lock.sockrcvbuf_lock = mtx_owned(&(inp->sctp_socket->so_rcv.sb_mtx));
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sctp_clog.x.lock.socksndbuf_lock = mtx_owned(&(inp->sctp_socket->so_snd.sb_mtx));
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} else {
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sctp_clog.x.lock.sock_lock = SCTP_LOCK_UNKNOWN;
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sctp_clog.x.lock.sockrcvbuf_lock = SCTP_LOCK_UNKNOWN;
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sctp_clog.x.lock.socksndbuf_lock = SCTP_LOCK_UNKNOWN;
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}
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SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
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SCTP_LOG_LOCK_EVENT,
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from,
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sctp_clog.x.misc.log1,
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sctp_clog.x.misc.log2,
|
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sctp_clog.x.misc.log3,
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sctp_clog.x.misc.log4);
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}
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|
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void
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sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *net, int error, int burst, uint8_t from)
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|
{
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struct sctp_cwnd_log sctp_clog;
|
|
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memset(&sctp_clog, 0, sizeof(sctp_clog));
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sctp_clog.x.cwnd.net = net;
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sctp_clog.x.cwnd.cwnd_new_value = error;
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sctp_clog.x.cwnd.inflight = net->flight_size;
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sctp_clog.x.cwnd.cwnd_augment = burst;
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if (stcb->asoc.send_queue_cnt > 255)
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sctp_clog.x.cwnd.cnt_in_send = 255;
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else
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sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt;
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if (stcb->asoc.stream_queue_cnt > 255)
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sctp_clog.x.cwnd.cnt_in_str = 255;
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else
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sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt;
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SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
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|
SCTP_LOG_EVENT_MAXBURST,
|
|
from,
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|
sctp_clog.x.misc.log1,
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|
sctp_clog.x.misc.log2,
|
|
sctp_clog.x.misc.log3,
|
|
sctp_clog.x.misc.log4);
|
|
|
|
}
|
|
|
|
void
|
|
sctp_log_rwnd(uint8_t from, uint32_t peers_rwnd, uint32_t snd_size, uint32_t overhead)
|
|
{
|
|
struct sctp_cwnd_log sctp_clog;
|
|
|
|
sctp_clog.x.rwnd.rwnd = peers_rwnd;
|
|
sctp_clog.x.rwnd.send_size = snd_size;
|
|
sctp_clog.x.rwnd.overhead = overhead;
|
|
sctp_clog.x.rwnd.new_rwnd = 0;
|
|
SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
|
|
SCTP_LOG_EVENT_RWND,
|
|
from,
|
|
sctp_clog.x.misc.log1,
|
|
sctp_clog.x.misc.log2,
|
|
sctp_clog.x.misc.log3,
|
|
sctp_clog.x.misc.log4);
|
|
}
|
|
|
|
void
|
|
sctp_log_rwnd_set(uint8_t from, uint32_t peers_rwnd, uint32_t flight_size, uint32_t overhead, uint32_t a_rwndval)
|
|
{
|
|
struct sctp_cwnd_log sctp_clog;
|
|
|
|
sctp_clog.x.rwnd.rwnd = peers_rwnd;
|
|
sctp_clog.x.rwnd.send_size = flight_size;
|
|
sctp_clog.x.rwnd.overhead = overhead;
|
|
sctp_clog.x.rwnd.new_rwnd = a_rwndval;
|
|
SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
|
|
SCTP_LOG_EVENT_RWND,
|
|
from,
|
|
sctp_clog.x.misc.log1,
|
|
sctp_clog.x.misc.log2,
|
|
sctp_clog.x.misc.log3,
|
|
sctp_clog.x.misc.log4);
|
|
}
|
|
|
|
void
|
|
sctp_log_mbcnt(uint8_t from, uint32_t total_oq, uint32_t book, uint32_t total_mbcnt_q, uint32_t mbcnt)
|
|
{
|
|
struct sctp_cwnd_log sctp_clog;
|
|
|
|
sctp_clog.x.mbcnt.total_queue_size = total_oq;
|
|
sctp_clog.x.mbcnt.size_change = book;
|
|
sctp_clog.x.mbcnt.total_queue_mb_size = total_mbcnt_q;
|
|
sctp_clog.x.mbcnt.mbcnt_change = mbcnt;
|
|
SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
|
|
SCTP_LOG_EVENT_MBCNT,
|
|
from,
|
|
sctp_clog.x.misc.log1,
|
|
sctp_clog.x.misc.log2,
|
|
sctp_clog.x.misc.log3,
|
|
sctp_clog.x.misc.log4);
|
|
|
|
}
|
|
|
|
void
|
|
sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d)
|
|
{
|
|
SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
|
|
SCTP_LOG_MISC_EVENT,
|
|
from,
|
|
a, b, c, d);
|
|
}
|
|
|
|
void
|
|
sctp_wakeup_log(struct sctp_tcb *stcb, uint32_t cumtsn, uint32_t wake_cnt, int from)
|
|
{
|
|
struct sctp_cwnd_log sctp_clog;
|
|
|
|
sctp_clog.x.wake.stcb = (void *)stcb;
|
|
sctp_clog.x.wake.wake_cnt = wake_cnt;
|
|
sctp_clog.x.wake.flight = stcb->asoc.total_flight_count;
|
|
sctp_clog.x.wake.send_q = stcb->asoc.send_queue_cnt;
|
|
sctp_clog.x.wake.sent_q = stcb->asoc.sent_queue_cnt;
|
|
|
|
if (stcb->asoc.stream_queue_cnt < 0xff)
|
|
sctp_clog.x.wake.stream_qcnt = (uint8_t) stcb->asoc.stream_queue_cnt;
|
|
else
|
|
sctp_clog.x.wake.stream_qcnt = 0xff;
|
|
|
|
if (stcb->asoc.chunks_on_out_queue < 0xff)
|
|
sctp_clog.x.wake.chunks_on_oque = (uint8_t) stcb->asoc.chunks_on_out_queue;
|
|
else
|
|
sctp_clog.x.wake.chunks_on_oque = 0xff;
|
|
|
|
sctp_clog.x.wake.sctpflags = 0;
|
|
/* set in the defered mode stuff */
|
|
if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE)
|
|
sctp_clog.x.wake.sctpflags |= 1;
|
|
if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT)
|
|
sctp_clog.x.wake.sctpflags |= 2;
|
|
if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT)
|
|
sctp_clog.x.wake.sctpflags |= 4;
|
|
/* what about the sb */
|
|
if (stcb->sctp_socket) {
|
|
struct socket *so = stcb->sctp_socket;
|
|
|
|
sctp_clog.x.wake.sbflags = (uint8_t) ((so->so_snd.sb_flags & 0x00ff));
|
|
} else {
|
|
sctp_clog.x.wake.sbflags = 0xff;
|
|
}
|
|
SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
|
|
SCTP_LOG_EVENT_WAKE,
|
|
from,
|
|
sctp_clog.x.misc.log1,
|
|
sctp_clog.x.misc.log2,
|
|
sctp_clog.x.misc.log3,
|
|
sctp_clog.x.misc.log4);
|
|
|
|
}
|
|
|
|
void
|
|
sctp_log_block(uint8_t from, struct socket *so, struct sctp_association *asoc, int sendlen)
|
|
{
|
|
struct sctp_cwnd_log sctp_clog;
|
|
|
|
sctp_clog.x.blk.onsb = asoc->total_output_queue_size;
|
|
sctp_clog.x.blk.send_sent_qcnt = (uint16_t) (asoc->send_queue_cnt + asoc->sent_queue_cnt);
|
|
sctp_clog.x.blk.peer_rwnd = asoc->peers_rwnd;
|
|
sctp_clog.x.blk.stream_qcnt = (uint16_t) asoc->stream_queue_cnt;
|
|
sctp_clog.x.blk.chunks_on_oque = (uint16_t) asoc->chunks_on_out_queue;
|
|
sctp_clog.x.blk.flight_size = (uint16_t) (asoc->total_flight / 1024);
|
|
sctp_clog.x.blk.sndlen = sendlen;
|
|
SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
|
|
SCTP_LOG_EVENT_BLOCK,
|
|
from,
|
|
sctp_clog.x.misc.log1,
|
|
sctp_clog.x.misc.log2,
|
|
sctp_clog.x.misc.log3,
|
|
sctp_clog.x.misc.log4);
|
|
|
|
}
|
|
|
|
int
|
|
sctp_fill_stat_log(void *optval, size_t *optsize)
|
|
{
|
|
/* May need to fix this if ktrdump does not work */
|
|
return (0);
|
|
}
|
|
|
|
#ifdef SCTP_AUDITING_ENABLED
|
|
uint8_t sctp_audit_data[SCTP_AUDIT_SIZE][2];
|
|
static int sctp_audit_indx = 0;
|
|
|
|
static
|
|
void
|
|
sctp_print_audit_report(void)
|
|
{
|
|
int i;
|
|
int cnt;
|
|
|
|
cnt = 0;
|
|
for (i = sctp_audit_indx; i < SCTP_AUDIT_SIZE; i++) {
|
|
if ((sctp_audit_data[i][0] == 0xe0) &&
|
|
(sctp_audit_data[i][1] == 0x01)) {
|
|
cnt = 0;
|
|
SCTP_PRINTF("\n");
|
|
} else if (sctp_audit_data[i][0] == 0xf0) {
|
|
cnt = 0;
|
|
SCTP_PRINTF("\n");
|
|
} else if ((sctp_audit_data[i][0] == 0xc0) &&
|
|
(sctp_audit_data[i][1] == 0x01)) {
|
|
SCTP_PRINTF("\n");
|
|
cnt = 0;
|
|
}
|
|
SCTP_PRINTF("%2.2x%2.2x ", (uint32_t) sctp_audit_data[i][0],
|
|
(uint32_t) sctp_audit_data[i][1]);
|
|
cnt++;
|
|
if ((cnt % 14) == 0)
|
|
SCTP_PRINTF("\n");
|
|
}
|
|
for (i = 0; i < sctp_audit_indx; i++) {
|
|
if ((sctp_audit_data[i][0] == 0xe0) &&
|
|
(sctp_audit_data[i][1] == 0x01)) {
|
|
cnt = 0;
|
|
SCTP_PRINTF("\n");
|
|
} else if (sctp_audit_data[i][0] == 0xf0) {
|
|
cnt = 0;
|
|
SCTP_PRINTF("\n");
|
|
} else if ((sctp_audit_data[i][0] == 0xc0) &&
|
|
(sctp_audit_data[i][1] == 0x01)) {
|
|
SCTP_PRINTF("\n");
|
|
cnt = 0;
|
|
}
|
|
SCTP_PRINTF("%2.2x%2.2x ", (uint32_t) sctp_audit_data[i][0],
|
|
(uint32_t) sctp_audit_data[i][1]);
|
|
cnt++;
|
|
if ((cnt % 14) == 0)
|
|
SCTP_PRINTF("\n");
|
|
}
|
|
SCTP_PRINTF("\n");
|
|
}
|
|
|
|
void
|
|
sctp_auditing(int from, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
|
|
struct sctp_nets *net)
|
|
{
|
|
int resend_cnt, tot_out, rep, tot_book_cnt;
|
|
struct sctp_nets *lnet;
|
|
struct sctp_tmit_chunk *chk;
|
|
|
|
sctp_audit_data[sctp_audit_indx][0] = 0xAA;
|
|
sctp_audit_data[sctp_audit_indx][1] = 0x000000ff & from;
|
|
sctp_audit_indx++;
|
|
if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
|
|
sctp_audit_indx = 0;
|
|
}
|
|
if (inp == NULL) {
|
|
sctp_audit_data[sctp_audit_indx][0] = 0xAF;
|
|
sctp_audit_data[sctp_audit_indx][1] = 0x01;
|
|
sctp_audit_indx++;
|
|
if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
|
|
sctp_audit_indx = 0;
|
|
}
|
|
return;
|
|
}
|
|
if (stcb == NULL) {
|
|
sctp_audit_data[sctp_audit_indx][0] = 0xAF;
|
|
sctp_audit_data[sctp_audit_indx][1] = 0x02;
|
|
sctp_audit_indx++;
|
|
if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
|
|
sctp_audit_indx = 0;
|
|
}
|
|
return;
|
|
}
|
|
sctp_audit_data[sctp_audit_indx][0] = 0xA1;
|
|
sctp_audit_data[sctp_audit_indx][1] =
|
|
(0x000000ff & stcb->asoc.sent_queue_retran_cnt);
|
|
sctp_audit_indx++;
|
|
if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
|
|
sctp_audit_indx = 0;
|
|
}
|
|
rep = 0;
|
|
tot_book_cnt = 0;
|
|
resend_cnt = tot_out = 0;
|
|
TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
|
|
if (chk->sent == SCTP_DATAGRAM_RESEND) {
|
|
resend_cnt++;
|
|
} else if (chk->sent < SCTP_DATAGRAM_RESEND) {
|
|
tot_out += chk->book_size;
|
|
tot_book_cnt++;
|
|
}
|
|
}
|
|
if (resend_cnt != stcb->asoc.sent_queue_retran_cnt) {
|
|
sctp_audit_data[sctp_audit_indx][0] = 0xAF;
|
|
sctp_audit_data[sctp_audit_indx][1] = 0xA1;
|
|
sctp_audit_indx++;
|
|
if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
|
|
sctp_audit_indx = 0;
|
|
}
|
|
SCTP_PRINTF("resend_cnt:%d asoc-tot:%d\n",
|
|
resend_cnt, stcb->asoc.sent_queue_retran_cnt);
|
|
rep = 1;
|
|
stcb->asoc.sent_queue_retran_cnt = resend_cnt;
|
|
sctp_audit_data[sctp_audit_indx][0] = 0xA2;
|
|
sctp_audit_data[sctp_audit_indx][1] =
|
|
(0x000000ff & stcb->asoc.sent_queue_retran_cnt);
|
|
sctp_audit_indx++;
|
|
if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
|
|
sctp_audit_indx = 0;
|
|
}
|
|
}
|
|
if (tot_out != stcb->asoc.total_flight) {
|
|
sctp_audit_data[sctp_audit_indx][0] = 0xAF;
|
|
sctp_audit_data[sctp_audit_indx][1] = 0xA2;
|
|
sctp_audit_indx++;
|
|
if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
|
|
sctp_audit_indx = 0;
|
|
}
|
|
rep = 1;
|
|
SCTP_PRINTF("tot_flt:%d asoc_tot:%d\n", tot_out,
|
|
(int)stcb->asoc.total_flight);
|
|
stcb->asoc.total_flight = tot_out;
|
|
}
|
|
if (tot_book_cnt != stcb->asoc.total_flight_count) {
|
|
sctp_audit_data[sctp_audit_indx][0] = 0xAF;
|
|
sctp_audit_data[sctp_audit_indx][1] = 0xA5;
|
|
sctp_audit_indx++;
|
|
if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
|
|
sctp_audit_indx = 0;
|
|
}
|
|
rep = 1;
|
|
SCTP_PRINTF("tot_flt_book:%d\n", tot_book);
|
|
|
|
stcb->asoc.total_flight_count = tot_book_cnt;
|
|
}
|
|
tot_out = 0;
|
|
TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
|
|
tot_out += lnet->flight_size;
|
|
}
|
|
if (tot_out != stcb->asoc.total_flight) {
|
|
sctp_audit_data[sctp_audit_indx][0] = 0xAF;
|
|
sctp_audit_data[sctp_audit_indx][1] = 0xA3;
|
|
sctp_audit_indx++;
|
|
if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
|
|
sctp_audit_indx = 0;
|
|
}
|
|
rep = 1;
|
|
SCTP_PRINTF("real flight:%d net total was %d\n",
|
|
stcb->asoc.total_flight, tot_out);
|
|
/* now corrective action */
|
|
TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
|
|
|
|
tot_out = 0;
|
|
TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
|
|
if ((chk->whoTo == lnet) &&
|
|
(chk->sent < SCTP_DATAGRAM_RESEND)) {
|
|
tot_out += chk->book_size;
|
|
}
|
|
}
|
|
if (lnet->flight_size != tot_out) {
|
|
SCTP_PRINTF("net:%x flight was %d corrected to %d\n",
|
|
(uint32_t) lnet, lnet->flight_size,
|
|
tot_out);
|
|
lnet->flight_size = tot_out;
|
|
}
|
|
}
|
|
}
|
|
if (rep) {
|
|
sctp_print_audit_report();
|
|
}
|
|
}
|
|
|
|
void
|
|
sctp_audit_log(uint8_t ev, uint8_t fd)
|
|
{
|
|
|
|
sctp_audit_data[sctp_audit_indx][0] = ev;
|
|
sctp_audit_data[sctp_audit_indx][1] = fd;
|
|
sctp_audit_indx++;
|
|
if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
|
|
sctp_audit_indx = 0;
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|
|
/*
|
|
* a list of sizes based on typical mtu's, used only if next hop size not
|
|
* returned.
|
|
*/
|
|
static int sctp_mtu_sizes[] = {
|
|
68,
|
|
296,
|
|
508,
|
|
512,
|
|
544,
|
|
576,
|
|
1006,
|
|
1492,
|
|
1500,
|
|
1536,
|
|
2002,
|
|
2048,
|
|
4352,
|
|
4464,
|
|
8166,
|
|
17914,
|
|
32000,
|
|
65535
|
|
};
|
|
|
|
void
|
|
sctp_stop_timers_for_shutdown(struct sctp_tcb *stcb)
|
|
{
|
|
struct sctp_association *asoc;
|
|
struct sctp_nets *net;
|
|
|
|
asoc = &stcb->asoc;
|
|
|
|
(void)SCTP_OS_TIMER_STOP(&asoc->hb_timer.timer);
|
|
(void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
|
|
(void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
|
|
(void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
|
|
(void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
|
|
(void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
|
|
TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
|
|
(void)SCTP_OS_TIMER_STOP(&net->fr_timer.timer);
|
|
(void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
|
|
}
|
|
}
|
|
|
|
int
|
|
find_next_best_mtu(int totsz)
|
|
{
|
|
int i, perfer;
|
|
|
|
/*
|
|
* if we are in here we must find the next best fit based on the
|
|
* size of the dg that failed to be sent.
|
|
*/
|
|
perfer = 0;
|
|
for (i = 0; i < NUMBER_OF_MTU_SIZES; i++) {
|
|
if (totsz < sctp_mtu_sizes[i]) {
|
|
perfer = i - 1;
|
|
if (perfer < 0)
|
|
perfer = 0;
|
|
break;
|
|
}
|
|
}
|
|
return (sctp_mtu_sizes[perfer]);
|
|
}
|
|
|
|
void
|
|
sctp_fill_random_store(struct sctp_pcb *m)
|
|
{
|
|
/*
|
|
* Here we use the MD5/SHA-1 to hash with our good randomNumbers and
|
|
* our counter. The result becomes our good random numbers and we
|
|
* then setup to give these out. Note that we do no locking to
|
|
* protect this. This is ok, since if competing folks call this we
|
|
* will get more gobbled gook in the random store which is what we
|
|
* want. There is a danger that two guys will use the same random
|
|
* numbers, but thats ok too since that is random as well :->
|
|
*/
|
|
m->store_at = 0;
|
|
(void)sctp_hmac(SCTP_HMAC, (uint8_t *) m->random_numbers,
|
|
sizeof(m->random_numbers), (uint8_t *) & m->random_counter,
|
|
sizeof(m->random_counter), (uint8_t *) m->random_store);
|
|
m->random_counter++;
|
|
}
|
|
|
|
uint32_t
|
|
sctp_select_initial_TSN(struct sctp_pcb *inp)
|
|
{
|
|
/*
|
|
* A true implementation should use random selection process to get
|
|
* the initial stream sequence number, using RFC1750 as a good
|
|
* guideline
|
|
*/
|
|
uint32_t x, *xp;
|
|
uint8_t *p;
|
|
int store_at, new_store;
|
|
|
|
if (inp->initial_sequence_debug != 0) {
|
|
uint32_t ret;
|
|
|
|
ret = inp->initial_sequence_debug;
|
|
inp->initial_sequence_debug++;
|
|
return (ret);
|
|
}
|
|
retry:
|
|
store_at = inp->store_at;
|
|
new_store = store_at + sizeof(uint32_t);
|
|
if (new_store >= (SCTP_SIGNATURE_SIZE - 3)) {
|
|
new_store = 0;
|
|
}
|
|
if (!atomic_cmpset_int(&inp->store_at, store_at, new_store)) {
|
|
goto retry;
|
|
}
|
|
if (new_store == 0) {
|
|
/* Refill the random store */
|
|
sctp_fill_random_store(inp);
|
|
}
|
|
p = &inp->random_store[store_at];
|
|
xp = (uint32_t *) p;
|
|
x = *xp;
|
|
return (x);
|
|
}
|
|
|
|
uint32_t
|
|
sctp_select_a_tag(struct sctp_inpcb *inp, uint16_t lport, uint16_t rport, int save_in_twait)
|
|
{
|
|
u_long x, not_done;
|
|
struct timeval now;
|
|
|
|
(void)SCTP_GETTIME_TIMEVAL(&now);
|
|
not_done = 1;
|
|
while (not_done) {
|
|
x = sctp_select_initial_TSN(&inp->sctp_ep);
|
|
if (x == 0) {
|
|
/* we never use 0 */
|
|
continue;
|
|
}
|
|
if (sctp_is_vtag_good(inp, x, lport, rport, &now, save_in_twait)) {
|
|
not_done = 0;
|
|
}
|
|
}
|
|
return (x);
|
|
}
|
|
|
|
int
|
|
sctp_init_asoc(struct sctp_inpcb *m, struct sctp_tcb *stcb,
|
|
int for_a_init, uint32_t override_tag, uint32_t vrf_id)
|
|
{
|
|
struct sctp_association *asoc;
|
|
|
|
/*
|
|
* Anything set to zero is taken care of by the allocation routine's
|
|
* bzero
|
|
*/
|
|
|
|
/*
|
|
* Up front select what scoping to apply on addresses I tell my peer
|
|
* Not sure what to do with these right now, we will need to come up
|
|
* with a way to set them. We may need to pass them through from the
|
|
* caller in the sctp_aloc_assoc() function.
|
|
*/
|
|
int i;
|
|
|
|
asoc = &stcb->asoc;
|
|
/* init all variables to a known value. */
|
|
SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_INUSE);
|
|
asoc->max_burst = m->sctp_ep.max_burst;
|
|
asoc->heart_beat_delay = TICKS_TO_MSEC(m->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]);
|
|
asoc->cookie_life = m->sctp_ep.def_cookie_life;
|
|
asoc->sctp_cmt_on_off = (uint8_t) SCTP_BASE_SYSCTL(sctp_cmt_on_off);
|
|
/* EY Init nr_sack variable */
|
|
asoc->sctp_nr_sack_on_off = (uint8_t) SCTP_BASE_SYSCTL(sctp_nr_sack_on_off);
|
|
/* JRS 5/21/07 - Init CMT PF variables */
|
|
asoc->sctp_cmt_pf = (uint8_t) SCTP_BASE_SYSCTL(sctp_cmt_pf);
|
|
asoc->sctp_frag_point = m->sctp_frag_point;
|
|
#ifdef INET
|
|
asoc->default_tos = m->ip_inp.inp.inp_ip_tos;
|
|
#else
|
|
asoc->default_tos = 0;
|
|
#endif
|
|
|
|
#ifdef INET6
|
|
asoc->default_flowlabel = ((struct in6pcb *)m)->in6p_flowinfo;
|
|
#else
|
|
asoc->default_flowlabel = 0;
|
|
#endif
|
|
asoc->sb_send_resv = 0;
|
|
if (override_tag) {
|
|
#ifdef MICHAELS_EXPERIMENT
|
|
if (sctp_is_in_timewait(override_tag, stcb->sctp_ep->sctp_lport, stcb->rport)) {
|
|
/*
|
|
* It must be in the time-wait hash, we put it there
|
|
* when we aloc one. If not the peer is playing
|
|
* games.
|
|
*/
|
|
asoc->my_vtag = override_tag;
|
|
} else {
|
|
SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
|
|
#ifdef INVARIANTS
|
|
panic("Huh is_in_timewait fails");
|
|
#endif
|
|
return (ENOMEM);
|
|
}
|
|
#else
|
|
asoc->my_vtag = override_tag;
|
|
#endif
|
|
} else {
|
|
asoc->my_vtag = sctp_select_a_tag(m, stcb->sctp_ep->sctp_lport, stcb->rport, 1);
|
|
}
|
|
/* Get the nonce tags */
|
|
asoc->my_vtag_nonce = sctp_select_a_tag(m, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
|
|
asoc->peer_vtag_nonce = sctp_select_a_tag(m, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
|
|
asoc->vrf_id = vrf_id;
|
|
|
|
if (sctp_is_feature_on(m, SCTP_PCB_FLAGS_DONOT_HEARTBEAT))
|
|
asoc->hb_is_disabled = 1;
|
|
else
|
|
asoc->hb_is_disabled = 0;
|
|
|
|
#ifdef SCTP_ASOCLOG_OF_TSNS
|
|
asoc->tsn_in_at = 0;
|
|
asoc->tsn_out_at = 0;
|
|
asoc->tsn_in_wrapped = 0;
|
|
asoc->tsn_out_wrapped = 0;
|
|
asoc->cumack_log_at = 0;
|
|
asoc->cumack_log_atsnt = 0;
|
|
#endif
|
|
#ifdef SCTP_FS_SPEC_LOG
|
|
asoc->fs_index = 0;
|
|
#endif
|
|
asoc->refcnt = 0;
|
|
asoc->assoc_up_sent = 0;
|
|
asoc->asconf_seq_out = asoc->str_reset_seq_out = asoc->init_seq_number = asoc->sending_seq =
|
|
sctp_select_initial_TSN(&m->sctp_ep);
|
|
asoc->asconf_seq_out_acked = asoc->asconf_seq_out - 1;
|
|
/* we are optimisitic here */
|
|
asoc->peer_supports_pktdrop = 1;
|
|
asoc->peer_supports_nat = 0;
|
|
asoc->sent_queue_retran_cnt = 0;
|
|
|
|
/* for CMT */
|
|
asoc->last_net_data_came_from = NULL;
|
|
|
|
/* This will need to be adjusted */
|
|
asoc->last_cwr_tsn = asoc->init_seq_number - 1;
|
|
asoc->last_acked_seq = asoc->init_seq_number - 1;
|
|
asoc->advanced_peer_ack_point = asoc->last_acked_seq;
|
|
asoc->asconf_seq_in = asoc->last_acked_seq;
|
|
|
|
/* here we are different, we hold the next one we expect */
|
|
asoc->str_reset_seq_in = asoc->last_acked_seq + 1;
|
|
|
|
asoc->initial_init_rto_max = m->sctp_ep.initial_init_rto_max;
|
|
asoc->initial_rto = m->sctp_ep.initial_rto;
|
|
|
|
asoc->max_init_times = m->sctp_ep.max_init_times;
|
|
asoc->max_send_times = m->sctp_ep.max_send_times;
|
|
asoc->def_net_failure = m->sctp_ep.def_net_failure;
|
|
asoc->free_chunk_cnt = 0;
|
|
|
|
asoc->iam_blocking = 0;
|
|
/* ECN Nonce initialization */
|
|
asoc->context = m->sctp_context;
|
|
asoc->def_send = m->def_send;
|
|
asoc->ecn_nonce_allowed = 0;
|
|
asoc->receiver_nonce_sum = 1;
|
|
asoc->nonce_sum_expect_base = 1;
|
|
asoc->nonce_sum_check = 1;
|
|
asoc->nonce_resync_tsn = 0;
|
|
asoc->nonce_wait_for_ecne = 0;
|
|
asoc->nonce_wait_tsn = 0;
|
|
asoc->delayed_ack = TICKS_TO_MSEC(m->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
|
|
asoc->sack_freq = m->sctp_ep.sctp_sack_freq;
|
|
asoc->pr_sctp_cnt = 0;
|
|
asoc->total_output_queue_size = 0;
|
|
|
|
if (m->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
|
|
struct in6pcb *inp6;
|
|
|
|
/* Its a V6 socket */
|
|
inp6 = (struct in6pcb *)m;
|
|
asoc->ipv6_addr_legal = 1;
|
|
/* Now look at the binding flag to see if V4 will be legal */
|
|
if (SCTP_IPV6_V6ONLY(inp6) == 0) {
|
|
asoc->ipv4_addr_legal = 1;
|
|
} else {
|
|
/* V4 addresses are NOT legal on the association */
|
|
asoc->ipv4_addr_legal = 0;
|
|
}
|
|
} else {
|
|
/* Its a V4 socket, no - V6 */
|
|
asoc->ipv4_addr_legal = 1;
|
|
asoc->ipv6_addr_legal = 0;
|
|
}
|
|
|
|
asoc->my_rwnd = max(SCTP_SB_LIMIT_RCV(m->sctp_socket), SCTP_MINIMAL_RWND);
|
|
asoc->peers_rwnd = SCTP_SB_LIMIT_RCV(m->sctp_socket);
|
|
|
|
asoc->smallest_mtu = m->sctp_frag_point;
|
|
#ifdef SCTP_PRINT_FOR_B_AND_M
|
|
SCTP_PRINTF("smallest_mtu init'd with asoc to :%d\n",
|
|
asoc->smallest_mtu);
|
|
#endif
|
|
asoc->minrto = m->sctp_ep.sctp_minrto;
|
|
asoc->maxrto = m->sctp_ep.sctp_maxrto;
|
|
|
|
asoc->locked_on_sending = NULL;
|
|
asoc->stream_locked_on = 0;
|
|
asoc->ecn_echo_cnt_onq = 0;
|
|
asoc->stream_locked = 0;
|
|
|
|
asoc->send_sack = 1;
|
|
|
|
LIST_INIT(&asoc->sctp_restricted_addrs);
|
|
|
|
TAILQ_INIT(&asoc->nets);
|
|
TAILQ_INIT(&asoc->pending_reply_queue);
|
|
TAILQ_INIT(&asoc->asconf_ack_sent);
|
|
/* Setup to fill the hb random cache at first HB */
|
|
asoc->hb_random_idx = 4;
|
|
|
|
asoc->sctp_autoclose_ticks = m->sctp_ep.auto_close_time;
|
|
|
|
/*
|
|
* JRS - Pick the default congestion control module based on the
|
|
* sysctl.
|
|
*/
|
|
switch (m->sctp_ep.sctp_default_cc_module) {
|
|
/* JRS - Standard TCP congestion control */
|
|
case SCTP_CC_RFC2581:
|
|
{
|
|
stcb->asoc.congestion_control_module = SCTP_CC_RFC2581;
|
|
stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_set_initial_cc_param;
|
|
stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_cwnd_update_after_sack;
|
|
stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_cwnd_update_after_fr;
|
|
stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_cwnd_update_after_timeout;
|
|
stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_cwnd_update_after_ecn_echo;
|
|
stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped;
|
|
stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output;
|
|
stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_cwnd_update_after_fr_timer;
|
|
break;
|
|
}
|
|
/* JRS - High Speed TCP congestion control (Floyd) */
|
|
case SCTP_CC_HSTCP:
|
|
{
|
|
stcb->asoc.congestion_control_module = SCTP_CC_HSTCP;
|
|
stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_set_initial_cc_param;
|
|
stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_hs_cwnd_update_after_sack;
|
|
stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_hs_cwnd_update_after_fr;
|
|
stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_cwnd_update_after_timeout;
|
|
stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_cwnd_update_after_ecn_echo;
|
|
stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped;
|
|
stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output;
|
|
stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_cwnd_update_after_fr_timer;
|
|
break;
|
|
}
|
|
/* JRS - HTCP congestion control */
|
|
case SCTP_CC_HTCP:
|
|
{
|
|
stcb->asoc.congestion_control_module = SCTP_CC_HTCP;
|
|
stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_htcp_set_initial_cc_param;
|
|
stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_htcp_cwnd_update_after_sack;
|
|
stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_htcp_cwnd_update_after_fr;
|
|
stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_htcp_cwnd_update_after_timeout;
|
|
stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_htcp_cwnd_update_after_ecn_echo;
|
|
stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped;
|
|
stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output;
|
|
stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_htcp_cwnd_update_after_fr_timer;
|
|
break;
|
|
}
|
|
/* JRS - By default, use RFC2581 */
|
|
default:
|
|
{
|
|
stcb->asoc.congestion_control_module = SCTP_CC_RFC2581;
|
|
stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_set_initial_cc_param;
|
|
stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_cwnd_update_after_sack;
|
|
stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_cwnd_update_after_fr;
|
|
stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_cwnd_update_after_timeout;
|
|
stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_cwnd_update_after_ecn_echo;
|
|
stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped;
|
|
stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output;
|
|
stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_cwnd_update_after_fr_timer;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Now the stream parameters, here we allocate space for all streams
|
|
* that we request by default.
|
|
*/
|
|
asoc->strm_realoutsize = asoc->streamoutcnt = asoc->pre_open_streams =
|
|
m->sctp_ep.pre_open_stream_count;
|
|
SCTP_MALLOC(asoc->strmout, struct sctp_stream_out *,
|
|
asoc->streamoutcnt * sizeof(struct sctp_stream_out),
|
|
SCTP_M_STRMO);
|
|
if (asoc->strmout == NULL) {
|
|
/* big trouble no memory */
|
|
SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
|
|
return (ENOMEM);
|
|
}
|
|
for (i = 0; i < asoc->streamoutcnt; i++) {
|
|
/*
|
|
* inbound side must be set to 0xffff, also NOTE when we get
|
|
* the INIT-ACK back (for INIT sender) we MUST reduce the
|
|
* count (streamoutcnt) but first check if we sent to any of
|
|
* the upper streams that were dropped (if some were). Those
|
|
* that were dropped must be notified to the upper layer as
|
|
* failed to send.
|
|
*/
|
|
asoc->strmout[i].next_sequence_sent = 0x0;
|
|
TAILQ_INIT(&asoc->strmout[i].outqueue);
|
|
asoc->strmout[i].stream_no = i;
|
|
asoc->strmout[i].last_msg_incomplete = 0;
|
|
asoc->strmout[i].next_spoke.tqe_next = 0;
|
|
asoc->strmout[i].next_spoke.tqe_prev = 0;
|
|
}
|
|
/* Now the mapping array */
|
|
asoc->mapping_array_size = SCTP_INITIAL_MAPPING_ARRAY;
|
|
SCTP_MALLOC(asoc->mapping_array, uint8_t *, asoc->mapping_array_size,
|
|
SCTP_M_MAP);
|
|
if (asoc->mapping_array == NULL) {
|
|
SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
|
|
SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
|
|
return (ENOMEM);
|
|
}
|
|
memset(asoc->mapping_array, 0, asoc->mapping_array_size);
|
|
/* EY - initialize the nr_mapping_array just like mapping array */
|
|
asoc->nr_mapping_array_size = SCTP_INITIAL_NR_MAPPING_ARRAY;
|
|
SCTP_MALLOC(asoc->nr_mapping_array, uint8_t *, asoc->nr_mapping_array_size,
|
|
SCTP_M_MAP);
|
|
/*
|
|
* if (asoc->nr_mapping_array == NULL) { SCTP_FREE(asoc->strmout,
|
|
* SCTP_M_STRMO); SCTP_LTRACE_ERR_RET(NULL, stcb, NULL,
|
|
* SCTP_FROM_SCTPUTIL, ENOMEM); return (ENOMEM); }
|
|
*/
|
|
memset(asoc->nr_mapping_array, 0, asoc->nr_mapping_array_size);
|
|
|
|
/* Now the init of the other outqueues */
|
|
TAILQ_INIT(&asoc->free_chunks);
|
|
TAILQ_INIT(&asoc->out_wheel);
|
|
TAILQ_INIT(&asoc->control_send_queue);
|
|
TAILQ_INIT(&asoc->asconf_send_queue);
|
|
TAILQ_INIT(&asoc->send_queue);
|
|
TAILQ_INIT(&asoc->sent_queue);
|
|
TAILQ_INIT(&asoc->reasmqueue);
|
|
TAILQ_INIT(&asoc->resetHead);
|
|
asoc->max_inbound_streams = m->sctp_ep.max_open_streams_intome;
|
|
TAILQ_INIT(&asoc->asconf_queue);
|
|
/* authentication fields */
|
|
asoc->authinfo.random = NULL;
|
|
asoc->authinfo.active_keyid = 0;
|
|
asoc->authinfo.assoc_key = NULL;
|
|
asoc->authinfo.assoc_keyid = 0;
|
|
asoc->authinfo.recv_key = NULL;
|
|
asoc->authinfo.recv_keyid = 0;
|
|
LIST_INIT(&asoc->shared_keys);
|
|
asoc->marked_retrans = 0;
|
|
asoc->timoinit = 0;
|
|
asoc->timodata = 0;
|
|
asoc->timosack = 0;
|
|
asoc->timoshutdown = 0;
|
|
asoc->timoheartbeat = 0;
|
|
asoc->timocookie = 0;
|
|
asoc->timoshutdownack = 0;
|
|
(void)SCTP_GETTIME_TIMEVAL(&asoc->start_time);
|
|
asoc->discontinuity_time = asoc->start_time;
|
|
/*
|
|
* sa_ignore MEMLEAK {memory is put in the assoc mapping array and
|
|
* freed later whe the association is freed.
|
|
*/
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
sctp_expand_mapping_array(struct sctp_association *asoc, uint32_t needed)
|
|
{
|
|
/* mapping array needs to grow */
|
|
uint8_t *new_array;
|
|
uint32_t new_size;
|
|
|
|
new_size = asoc->mapping_array_size + ((needed + 7) / 8 + SCTP_MAPPING_ARRAY_INCR);
|
|
SCTP_MALLOC(new_array, uint8_t *, new_size, SCTP_M_MAP);
|
|
if (new_array == NULL) {
|
|
/* can't get more, forget it */
|
|
SCTP_PRINTF("No memory for expansion of SCTP mapping array %d\n",
|
|
new_size);
|
|
return (-1);
|
|
}
|
|
memset(new_array, 0, new_size);
|
|
memcpy(new_array, asoc->mapping_array, asoc->mapping_array_size);
|
|
SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
|
|
asoc->mapping_array = new_array;
|
|
asoc->mapping_array_size = new_size;
|
|
return (0);
|
|
}
|
|
|
|
/* EY - nr_sack version of the above method */
|
|
int
|
|
sctp_expand_nr_mapping_array(struct sctp_association *asoc, uint32_t needed)
|
|
{
|
|
/* nr mapping array needs to grow */
|
|
uint8_t *new_array;
|
|
uint32_t new_size;
|
|
|
|
new_size = asoc->nr_mapping_array_size + ((needed + 7) / 8 + SCTP_NR_MAPPING_ARRAY_INCR);
|
|
SCTP_MALLOC(new_array, uint8_t *, new_size, SCTP_M_MAP);
|
|
if (new_array == NULL) {
|
|
/* can't get more, forget it */
|
|
SCTP_PRINTF("No memory for expansion of SCTP mapping array %d\n",
|
|
new_size);
|
|
return (-1);
|
|
}
|
|
memset(new_array, 0, new_size);
|
|
memcpy(new_array, asoc->nr_mapping_array, asoc->nr_mapping_array_size);
|
|
SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
|
|
asoc->nr_mapping_array = new_array;
|
|
asoc->nr_mapping_array_size = new_size;
|
|
return (0);
|
|
}
|
|
|
|
#if defined(SCTP_USE_THREAD_BASED_ITERATOR)
|
|
static void
|
|
sctp_iterator_work(struct sctp_iterator *it)
|
|
{
|
|
int iteration_count = 0;
|
|
int inp_skip = 0;
|
|
|
|
SCTP_ITERATOR_LOCK();
|
|
if (it->inp) {
|
|
SCTP_INP_DECR_REF(it->inp);
|
|
}
|
|
if (it->inp == NULL) {
|
|
/* iterator is complete */
|
|
done_with_iterator:
|
|
SCTP_ITERATOR_UNLOCK();
|
|
if (it->function_atend != NULL) {
|
|
(*it->function_atend) (it->pointer, it->val);
|
|
}
|
|
SCTP_FREE(it, SCTP_M_ITER);
|
|
return;
|
|
}
|
|
select_a_new_ep:
|
|
SCTP_INP_WLOCK(it->inp);
|
|
while (((it->pcb_flags) &&
|
|
((it->inp->sctp_flags & it->pcb_flags) != it->pcb_flags)) ||
|
|
((it->pcb_features) &&
|
|
((it->inp->sctp_features & it->pcb_features) != it->pcb_features))) {
|
|
/* endpoint flags or features don't match, so keep looking */
|
|
if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
|
|
SCTP_INP_WUNLOCK(it->inp);
|
|
goto done_with_iterator;
|
|
}
|
|
SCTP_INP_WUNLOCK(it->inp);
|
|
it->inp = LIST_NEXT(it->inp, sctp_list);
|
|
if (it->inp == NULL) {
|
|
goto done_with_iterator;
|
|
}
|
|
SCTP_INP_WLOCK(it->inp);
|
|
}
|
|
|
|
SCTP_INP_WUNLOCK(it->inp);
|
|
SCTP_INP_RLOCK(it->inp);
|
|
|
|
/* now go through each assoc which is in the desired state */
|
|
if (it->done_current_ep == 0) {
|
|
if (it->function_inp != NULL)
|
|
inp_skip = (*it->function_inp) (it->inp, it->pointer, it->val);
|
|
it->done_current_ep = 1;
|
|
}
|
|
if (it->stcb == NULL) {
|
|
/* run the per instance function */
|
|
it->stcb = LIST_FIRST(&it->inp->sctp_asoc_list);
|
|
}
|
|
if ((inp_skip) || it->stcb == NULL) {
|
|
if (it->function_inp_end != NULL) {
|
|
inp_skip = (*it->function_inp_end) (it->inp,
|
|
it->pointer,
|
|
it->val);
|
|
}
|
|
SCTP_INP_RUNLOCK(it->inp);
|
|
goto no_stcb;
|
|
}
|
|
while (it->stcb) {
|
|
SCTP_TCB_LOCK(it->stcb);
|
|
if (it->asoc_state && ((it->stcb->asoc.state & it->asoc_state) != it->asoc_state)) {
|
|
/* not in the right state... keep looking */
|
|
SCTP_TCB_UNLOCK(it->stcb);
|
|
goto next_assoc;
|
|
}
|
|
/* see if we have limited out the iterator loop */
|
|
iteration_count++;
|
|
if (iteration_count > SCTP_ITERATOR_MAX_AT_ONCE) {
|
|
/* Pause to let others grab the lock */
|
|
atomic_add_int(&it->stcb->asoc.refcnt, 1);
|
|
SCTP_TCB_UNLOCK(it->stcb);
|
|
|
|
SCTP_INP_INCR_REF(it->inp);
|
|
SCTP_INP_RUNLOCK(it->inp);
|
|
SCTP_ITERATOR_UNLOCK();
|
|
SCTP_ITERATOR_LOCK();
|
|
SCTP_INP_RLOCK(it->inp);
|
|
|
|
SCTP_INP_DECR_REF(it->inp);
|
|
SCTP_TCB_LOCK(it->stcb);
|
|
atomic_add_int(&it->stcb->asoc.refcnt, -1);
|
|
iteration_count = 0;
|
|
}
|
|
/* run function on this one */
|
|
(*it->function_assoc) (it->inp, it->stcb, it->pointer, it->val);
|
|
|
|
/*
|
|
* we lie here, it really needs to have its own type but
|
|
* first I must verify that this won't effect things :-0
|
|
*/
|
|
if (it->no_chunk_output == 0)
|
|
sctp_chunk_output(it->inp, it->stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
|
|
|
|
SCTP_TCB_UNLOCK(it->stcb);
|
|
next_assoc:
|
|
it->stcb = LIST_NEXT(it->stcb, sctp_tcblist);
|
|
if (it->stcb == NULL) {
|
|
/* Run last function */
|
|
if (it->function_inp_end != NULL) {
|
|
inp_skip = (*it->function_inp_end) (it->inp,
|
|
it->pointer,
|
|
it->val);
|
|
}
|
|
}
|
|
}
|
|
SCTP_INP_RUNLOCK(it->inp);
|
|
no_stcb:
|
|
/* done with all assocs on this endpoint, move on to next endpoint */
|
|
it->done_current_ep = 0;
|
|
SCTP_INP_WLOCK(it->inp);
|
|
SCTP_INP_WUNLOCK(it->inp);
|
|
if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
|
|
it->inp = NULL;
|
|
} else {
|
|
SCTP_INP_INFO_RLOCK();
|
|
it->inp = LIST_NEXT(it->inp, sctp_list);
|
|
SCTP_INP_INFO_RUNLOCK();
|
|
}
|
|
if (it->inp == NULL) {
|
|
goto done_with_iterator;
|
|
}
|
|
goto select_a_new_ep;
|
|
}
|
|
|
|
void
|
|
sctp_iterator_worker(void)
|
|
{
|
|
struct sctp_iterator *it = NULL;
|
|
|
|
/* This function is called with the WQ lock in place */
|
|
|
|
SCTP_BASE_INFO(iterator_running) = 1;
|
|
again:
|
|
it = TAILQ_FIRST(&SCTP_BASE_INFO(iteratorhead));
|
|
while (it) {
|
|
/* now lets work on this one */
|
|
TAILQ_REMOVE(&SCTP_BASE_INFO(iteratorhead), it, sctp_nxt_itr);
|
|
SCTP_IPI_ITERATOR_WQ_UNLOCK();
|
|
sctp_iterator_work(it);
|
|
SCTP_IPI_ITERATOR_WQ_LOCK();
|
|
/* sa_ignore FREED_MEMORY */
|
|
it = TAILQ_FIRST(&SCTP_BASE_INFO(iteratorhead));
|
|
}
|
|
if (TAILQ_FIRST(&SCTP_BASE_INFO(iteratorhead))) {
|
|
goto again;
|
|
}
|
|
SCTP_BASE_INFO(iterator_running) = 0;
|
|
return;
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
static void
|
|
sctp_handle_addr_wq(void)
|
|
{
|
|
/* deal with the ADDR wq from the rtsock calls */
|
|
struct sctp_laddr *wi;
|
|
struct sctp_asconf_iterator *asc;
|
|
|
|
SCTP_MALLOC(asc, struct sctp_asconf_iterator *,
|
|
sizeof(struct sctp_asconf_iterator), SCTP_M_ASC_IT);
|
|
if (asc == NULL) {
|
|
/* Try later, no memory */
|
|
sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
|
|
(struct sctp_inpcb *)NULL,
|
|
(struct sctp_tcb *)NULL,
|
|
(struct sctp_nets *)NULL);
|
|
return;
|
|
}
|
|
LIST_INIT(&asc->list_of_work);
|
|
asc->cnt = 0;
|
|
SCTP_IPI_ITERATOR_WQ_LOCK();
|
|
wi = LIST_FIRST(&SCTP_BASE_INFO(addr_wq));
|
|
while (wi != NULL) {
|
|
LIST_REMOVE(wi, sctp_nxt_addr);
|
|
LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr);
|
|
asc->cnt++;
|
|
wi = LIST_FIRST(&SCTP_BASE_INFO(addr_wq));
|
|
}
|
|
SCTP_IPI_ITERATOR_WQ_UNLOCK();
|
|
if (asc->cnt == 0) {
|
|
SCTP_FREE(asc, SCTP_M_ASC_IT);
|
|
} else {
|
|
(void)sctp_initiate_iterator(sctp_asconf_iterator_ep,
|
|
sctp_asconf_iterator_stcb,
|
|
NULL, /* No ep end for boundall */
|
|
SCTP_PCB_FLAGS_BOUNDALL,
|
|
SCTP_PCB_ANY_FEATURES,
|
|
SCTP_ASOC_ANY_STATE,
|
|
(void *)asc, 0,
|
|
sctp_asconf_iterator_end, NULL, 0);
|
|
}
|
|
}
|
|
|
|
int retcode = 0;
|
|
int cur_oerr = 0;
|
|
|
|
void
|
|
sctp_timeout_handler(void *t)
|
|
{
|
|
struct sctp_inpcb *inp;
|
|
struct sctp_tcb *stcb;
|
|
struct sctp_nets *net;
|
|
struct sctp_timer *tmr;
|
|
|
|
#if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
|
|
struct socket *so;
|
|
|
|
#endif
|
|
int did_output, type;
|
|
struct sctp_iterator *it = NULL;
|
|
|
|
tmr = (struct sctp_timer *)t;
|
|
inp = (struct sctp_inpcb *)tmr->ep;
|
|
stcb = (struct sctp_tcb *)tmr->tcb;
|
|
net = (struct sctp_nets *)tmr->net;
|
|
did_output = 1;
|
|
|
|
#ifdef SCTP_AUDITING_ENABLED
|
|
sctp_audit_log(0xF0, (uint8_t) tmr->type);
|
|
sctp_auditing(3, inp, stcb, net);
|
|
#endif
|
|
|
|
/* sanity checks... */
|
|
if (tmr->self != (void *)tmr) {
|
|
/*
|
|
* SCTP_PRINTF("Stale SCTP timer fired (%p), ignoring...\n",
|
|
* tmr);
|
|
*/
|
|
return;
|
|
}
|
|
tmr->stopped_from = 0xa001;
|
|
if (!SCTP_IS_TIMER_TYPE_VALID(tmr->type)) {
|
|
/*
|
|
* SCTP_PRINTF("SCTP timer fired with invalid type: 0x%x\n",
|
|
* tmr->type);
|
|
*/
|
|
return;
|
|
}
|
|
tmr->stopped_from = 0xa002;
|
|
if ((tmr->type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL)) {
|
|
return;
|
|
}
|
|
/* if this is an iterator timeout, get the struct and clear inp */
|
|
tmr->stopped_from = 0xa003;
|
|
if (tmr->type == SCTP_TIMER_TYPE_ITERATOR) {
|
|
it = (struct sctp_iterator *)inp;
|
|
inp = NULL;
|
|
}
|
|
type = tmr->type;
|
|
if (inp) {
|
|
SCTP_INP_INCR_REF(inp);
|
|
if ((inp->sctp_socket == 0) &&
|
|
((tmr->type != SCTP_TIMER_TYPE_INPKILL) &&
|
|
(tmr->type != SCTP_TIMER_TYPE_SEND) &&
|
|
(tmr->type != SCTP_TIMER_TYPE_RECV) &&
|
|
(tmr->type != SCTP_TIMER_TYPE_HEARTBEAT) &&
|
|
(tmr->type != SCTP_TIMER_TYPE_SHUTDOWN) &&
|
|
(tmr->type != SCTP_TIMER_TYPE_SHUTDOWNACK) &&
|
|
(tmr->type != SCTP_TIMER_TYPE_SHUTDOWNGUARD) &&
|
|
(tmr->type != SCTP_TIMER_TYPE_ASOCKILL))
|
|
) {
|
|
SCTP_INP_DECR_REF(inp);
|
|
return;
|
|
}
|
|
}
|
|
tmr->stopped_from = 0xa004;
|
|
if (stcb) {
|
|
atomic_add_int(&stcb->asoc.refcnt, 1);
|
|
if (stcb->asoc.state == 0) {
|
|
atomic_add_int(&stcb->asoc.refcnt, -1);
|
|
if (inp) {
|
|
SCTP_INP_DECR_REF(inp);
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
tmr->stopped_from = 0xa005;
|
|
SCTPDBG(SCTP_DEBUG_TIMER1, "Timer type %d goes off\n", tmr->type);
|
|
if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
|
|
if (inp) {
|
|
SCTP_INP_DECR_REF(inp);
|
|
}
|
|
if (stcb) {
|
|
atomic_add_int(&stcb->asoc.refcnt, -1);
|
|
}
|
|
return;
|
|
}
|
|
tmr->stopped_from = 0xa006;
|
|
|
|
if (stcb) {
|
|
SCTP_TCB_LOCK(stcb);
|
|
atomic_add_int(&stcb->asoc.refcnt, -1);
|
|
if ((tmr->type != SCTP_TIMER_TYPE_ASOCKILL) &&
|
|
((stcb->asoc.state == 0) ||
|
|
(stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED))) {
|
|
SCTP_TCB_UNLOCK(stcb);
|
|
if (inp) {
|
|
SCTP_INP_DECR_REF(inp);
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
/* record in stopped what t-o occured */
|
|
tmr->stopped_from = tmr->type;
|
|
|
|
/* mark as being serviced now */
|
|
if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
|
|
/*
|
|
* Callout has been rescheduled.
|
|
*/
|
|
goto get_out;
|
|
}
|
|
if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
|
|
/*
|
|
* Not active, so no action.
|
|
*/
|
|
goto get_out;
|
|
}
|
|
SCTP_OS_TIMER_DEACTIVATE(&tmr->timer);
|
|
|
|
/* call the handler for the appropriate timer type */
|
|
switch (tmr->type) {
|
|
case SCTP_TIMER_TYPE_ZERO_COPY:
|
|
if (inp == NULL) {
|
|
break;
|
|
}
|
|
if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
|
|
SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
|
|
}
|
|
break;
|
|
case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
|
|
if (inp == NULL) {
|
|
break;
|
|
}
|
|
if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
|
|
SCTP_ZERO_COPY_SENDQ_EVENT(inp, inp->sctp_socket);
|
|
}
|
|
break;
|
|
case SCTP_TIMER_TYPE_ADDR_WQ:
|
|
sctp_handle_addr_wq();
|
|
break;
|
|
case SCTP_TIMER_TYPE_ITERATOR:
|
|
SCTP_STAT_INCR(sctps_timoiterator);
|
|
sctp_iterator_timer(it);
|
|
break;
|
|
case SCTP_TIMER_TYPE_SEND:
|
|
if ((stcb == NULL) || (inp == NULL)) {
|
|
break;
|
|
}
|
|
SCTP_STAT_INCR(sctps_timodata);
|
|
stcb->asoc.timodata++;
|
|
stcb->asoc.num_send_timers_up--;
|
|
if (stcb->asoc.num_send_timers_up < 0) {
|
|
stcb->asoc.num_send_timers_up = 0;
|
|
}
|
|
SCTP_TCB_LOCK_ASSERT(stcb);
|
|
cur_oerr = stcb->asoc.overall_error_count;
|
|
retcode = sctp_t3rxt_timer(inp, stcb, net);
|
|
if (retcode) {
|
|
/* no need to unlock on tcb its gone */
|
|
|
|
goto out_decr;
|
|
}
|
|
SCTP_TCB_LOCK_ASSERT(stcb);
|
|
#ifdef SCTP_AUDITING_ENABLED
|
|
sctp_auditing(4, inp, stcb, net);
|
|
#endif
|
|
sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
|
|
if ((stcb->asoc.num_send_timers_up == 0) &&
|
|
(stcb->asoc.sent_queue_cnt > 0)
|
|
) {
|
|
struct sctp_tmit_chunk *chk;
|
|
|
|
/*
|
|
* safeguard. If there on some on the sent queue
|
|
* somewhere but no timers running something is
|
|
* wrong... so we start a timer on the first chunk
|
|
* on the send queue on whatever net it is sent to.
|
|
*/
|
|
chk = TAILQ_FIRST(&stcb->asoc.sent_queue);
|
|
sctp_timer_start(SCTP_TIMER_TYPE_SEND, inp, stcb,
|
|
chk->whoTo);
|
|
}
|
|
break;
|
|
case SCTP_TIMER_TYPE_INIT:
|
|
if ((stcb == NULL) || (inp == NULL)) {
|
|
break;
|
|
}
|
|
SCTP_STAT_INCR(sctps_timoinit);
|
|
stcb->asoc.timoinit++;
|
|
if (sctp_t1init_timer(inp, stcb, net)) {
|
|
/* no need to unlock on tcb its gone */
|
|
goto out_decr;
|
|
}
|
|
/* We do output but not here */
|
|
did_output = 0;
|
|
break;
|
|
case SCTP_TIMER_TYPE_RECV:
|
|
if ((stcb == NULL) || (inp == NULL)) {
|
|
break;
|
|
} {
|
|
int abort_flag;
|
|
|
|
SCTP_STAT_INCR(sctps_timosack);
|
|
stcb->asoc.timosack++;
|
|
if (stcb->asoc.cumulative_tsn != stcb->asoc.highest_tsn_inside_map)
|
|
sctp_sack_check(stcb, 0, 0, &abort_flag);
|
|
|
|
/*
|
|
* EY if nr_sacks used then send an nr-sack , a sack
|
|
* otherwise
|
|
*/
|
|
if (SCTP_BASE_SYSCTL(sctp_nr_sack_on_off) && stcb->asoc.peer_supports_nr_sack)
|
|
sctp_send_nr_sack(stcb);
|
|
else
|
|
sctp_send_sack(stcb);
|
|
}
|
|
#ifdef SCTP_AUDITING_ENABLED
|
|
sctp_auditing(4, inp, stcb, net);
|
|
#endif
|
|
sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SACK_TMR, SCTP_SO_NOT_LOCKED);
|
|
break;
|
|
case SCTP_TIMER_TYPE_SHUTDOWN:
|
|
if ((stcb == NULL) || (inp == NULL)) {
|
|
break;
|
|
}
|
|
if (sctp_shutdown_timer(inp, stcb, net)) {
|
|
/* no need to unlock on tcb its gone */
|
|
goto out_decr;
|
|
}
|
|
SCTP_STAT_INCR(sctps_timoshutdown);
|
|
stcb->asoc.timoshutdown++;
|
|
#ifdef SCTP_AUDITING_ENABLED
|
|
sctp_auditing(4, inp, stcb, net);
|
|
#endif
|
|
sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_NOT_LOCKED);
|
|
break;
|
|
case SCTP_TIMER_TYPE_HEARTBEAT:
|
|
{
|
|
struct sctp_nets *lnet;
|
|
int cnt_of_unconf = 0;
|
|
|
|
if ((stcb == NULL) || (inp == NULL)) {
|
|
break;
|
|
}
|
|
SCTP_STAT_INCR(sctps_timoheartbeat);
|
|
stcb->asoc.timoheartbeat++;
|
|
TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
|
|
if ((lnet->dest_state & SCTP_ADDR_UNCONFIRMED) &&
|
|
(lnet->dest_state & SCTP_ADDR_REACHABLE)) {
|
|
cnt_of_unconf++;
|
|
}
|
|
}
|
|
if (cnt_of_unconf == 0) {
|
|
if (sctp_heartbeat_timer(inp, stcb, lnet,
|
|
cnt_of_unconf)) {
|
|
/* no need to unlock on tcb its gone */
|
|
goto out_decr;
|
|
}
|
|
}
|
|
#ifdef SCTP_AUDITING_ENABLED
|
|
sctp_auditing(4, inp, stcb, lnet);
|
|
#endif
|
|
sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT,
|
|
stcb->sctp_ep, stcb, lnet);
|
|
sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_HB_TMR, SCTP_SO_NOT_LOCKED);
|
|
}
|
|
break;
|
|
case SCTP_TIMER_TYPE_COOKIE:
|
|
if ((stcb == NULL) || (inp == NULL)) {
|
|
break;
|
|
}
|
|
if (sctp_cookie_timer(inp, stcb, net)) {
|
|
/* no need to unlock on tcb its gone */
|
|
goto out_decr;
|
|
}
|
|
SCTP_STAT_INCR(sctps_timocookie);
|
|
stcb->asoc.timocookie++;
|
|
#ifdef SCTP_AUDITING_ENABLED
|
|
sctp_auditing(4, inp, stcb, net);
|
|
#endif
|
|
/*
|
|
* We consider T3 and Cookie timer pretty much the same with
|
|
* respect to where from in chunk_output.
|
|
*/
|
|
sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
|
|
break;
|
|
case SCTP_TIMER_TYPE_NEWCOOKIE:
|
|
{
|
|
struct timeval tv;
|
|
int i, secret;
|
|
|
|
if (inp == NULL) {
|
|
break;
|
|
}
|
|
SCTP_STAT_INCR(sctps_timosecret);
|
|
(void)SCTP_GETTIME_TIMEVAL(&tv);
|
|
SCTP_INP_WLOCK(inp);
|
|
inp->sctp_ep.time_of_secret_change = tv.tv_sec;
|
|
inp->sctp_ep.last_secret_number =
|
|
inp->sctp_ep.current_secret_number;
|
|
inp->sctp_ep.current_secret_number++;
|
|
if (inp->sctp_ep.current_secret_number >=
|
|
SCTP_HOW_MANY_SECRETS) {
|
|
inp->sctp_ep.current_secret_number = 0;
|
|
}
|
|
secret = (int)inp->sctp_ep.current_secret_number;
|
|
for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
|
|
inp->sctp_ep.secret_key[secret][i] =
|
|
sctp_select_initial_TSN(&inp->sctp_ep);
|
|
}
|
|
SCTP_INP_WUNLOCK(inp);
|
|
sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, stcb, net);
|
|
}
|
|
did_output = 0;
|
|
break;
|
|
case SCTP_TIMER_TYPE_PATHMTURAISE:
|
|
if ((stcb == NULL) || (inp == NULL)) {
|
|
break;
|
|
}
|
|
SCTP_STAT_INCR(sctps_timopathmtu);
|
|
sctp_pathmtu_timer(inp, stcb, net);
|
|
did_output = 0;
|
|
break;
|
|
case SCTP_TIMER_TYPE_SHUTDOWNACK:
|
|
if ((stcb == NULL) || (inp == NULL)) {
|
|
break;
|
|
}
|
|
if (sctp_shutdownack_timer(inp, stcb, net)) {
|
|
/* no need to unlock on tcb its gone */
|
|
goto out_decr;
|
|
}
|
|
SCTP_STAT_INCR(sctps_timoshutdownack);
|
|
stcb->asoc.timoshutdownack++;
|
|
#ifdef SCTP_AUDITING_ENABLED
|
|
sctp_auditing(4, inp, stcb, net);
|
|
#endif
|
|
sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_ACK_TMR, SCTP_SO_NOT_LOCKED);
|
|
break;
|
|
case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
|
|
if ((stcb == NULL) || (inp == NULL)) {
|
|
break;
|
|
}
|
|
SCTP_STAT_INCR(sctps_timoshutdownguard);
|
|
sctp_abort_an_association(inp, stcb,
|
|
SCTP_SHUTDOWN_GUARD_EXPIRES, NULL, SCTP_SO_NOT_LOCKED);
|
|
/* no need to unlock on tcb its gone */
|
|
goto out_decr;
|
|
|
|
case SCTP_TIMER_TYPE_STRRESET:
|
|
if ((stcb == NULL) || (inp == NULL)) {
|
|
break;
|
|
}
|
|
if (sctp_strreset_timer(inp, stcb, net)) {
|
|
/* no need to unlock on tcb its gone */
|
|
goto out_decr;
|
|
}
|
|
SCTP_STAT_INCR(sctps_timostrmrst);
|
|
sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_TMR, SCTP_SO_NOT_LOCKED);
|
|
break;
|
|
case SCTP_TIMER_TYPE_EARLYFR:
|
|
/* Need to do FR of things for net */
|
|
if ((stcb == NULL) || (inp == NULL)) {
|
|
break;
|
|
}
|
|
SCTP_STAT_INCR(sctps_timoearlyfr);
|
|
sctp_early_fr_timer(inp, stcb, net);
|
|
break;
|
|
case SCTP_TIMER_TYPE_ASCONF:
|
|
if ((stcb == NULL) || (inp == NULL)) {
|
|
break;
|
|
}
|
|
if (sctp_asconf_timer(inp, stcb, net)) {
|
|
/* no need to unlock on tcb its gone */
|
|
goto out_decr;
|
|
}
|
|
SCTP_STAT_INCR(sctps_timoasconf);
|
|
#ifdef SCTP_AUDITING_ENABLED
|
|
sctp_auditing(4, inp, stcb, net);
|
|
#endif
|
|
sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_ASCONF_TMR, SCTP_SO_NOT_LOCKED);
|
|
break;
|
|
case SCTP_TIMER_TYPE_PRIM_DELETED:
|
|
if ((stcb == NULL) || (inp == NULL)) {
|
|
break;
|
|
}
|
|
sctp_delete_prim_timer(inp, stcb, net);
|
|
SCTP_STAT_INCR(sctps_timodelprim);
|
|
break;
|
|
|
|
case SCTP_TIMER_TYPE_AUTOCLOSE:
|
|
if ((stcb == NULL) || (inp == NULL)) {
|
|
break;
|
|
}
|
|
SCTP_STAT_INCR(sctps_timoautoclose);
|
|
sctp_autoclose_timer(inp, stcb, net);
|
|
sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_AUTOCLOSE_TMR, SCTP_SO_NOT_LOCKED);
|
|
did_output = 0;
|
|
break;
|
|
case SCTP_TIMER_TYPE_ASOCKILL:
|
|
if ((stcb == NULL) || (inp == NULL)) {
|
|
break;
|
|
}
|
|
SCTP_STAT_INCR(sctps_timoassockill);
|
|
/* Can we free it yet? */
|
|
SCTP_INP_DECR_REF(inp);
|
|
sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL, SCTP_FROM_SCTPUTIL + SCTP_LOC_1);
|
|
#if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
|
|
so = SCTP_INP_SO(inp);
|
|
atomic_add_int(&stcb->asoc.refcnt, 1);
|
|
SCTP_TCB_UNLOCK(stcb);
|
|
SCTP_SOCKET_LOCK(so, 1);
|
|
SCTP_TCB_LOCK(stcb);
|
|
atomic_subtract_int(&stcb->asoc.refcnt, 1);
|
|
#endif
|
|
(void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_2);
|
|
#if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
|
|
SCTP_SOCKET_UNLOCK(so, 1);
|
|
#endif
|
|
/*
|
|
* free asoc, always unlocks (or destroy's) so prevent
|
|
* duplicate unlock or unlock of a free mtx :-0
|
|
*/
|
|
stcb = NULL;
|
|
goto out_no_decr;
|
|
case SCTP_TIMER_TYPE_INPKILL:
|
|
SCTP_STAT_INCR(sctps_timoinpkill);
|
|
if (inp == NULL) {
|
|
break;
|
|
}
|
|
/*
|
|
* special case, take away our increment since WE are the
|
|
* killer
|
|
*/
|
|
SCTP_INP_DECR_REF(inp);
|
|
sctp_timer_stop(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL, SCTP_FROM_SCTPUTIL + SCTP_LOC_3);
|
|
sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
|
|
SCTP_CALLED_DIRECTLY_NOCMPSET);
|
|
inp = NULL;
|
|
goto out_no_decr;
|
|
default:
|
|
SCTPDBG(SCTP_DEBUG_TIMER1, "sctp_timeout_handler:unknown timer %d\n",
|
|
tmr->type);
|
|
break;
|
|
};
|
|
#ifdef SCTP_AUDITING_ENABLED
|
|
sctp_audit_log(0xF1, (uint8_t) tmr->type);
|
|
if (inp)
|
|
sctp_auditing(5, inp, stcb, net);
|
|
#endif
|
|
if ((did_output) && stcb) {
|
|
/*
|
|
* Now we need to clean up the control chunk chain if an
|
|
* ECNE is on it. It must be marked as UNSENT again so next
|
|
* call will continue to send it until such time that we get
|
|
* a CWR, to remove it. It is, however, less likely that we
|
|
* will find a ecn echo on the chain though.
|
|
*/
|
|
sctp_fix_ecn_echo(&stcb->asoc);
|
|
}
|
|
get_out:
|
|
if (stcb) {
|
|
SCTP_TCB_UNLOCK(stcb);
|
|
}
|
|
out_decr:
|
|
if (inp) {
|
|
SCTP_INP_DECR_REF(inp);
|
|
}
|
|
out_no_decr:
|
|
SCTPDBG(SCTP_DEBUG_TIMER1, "Timer now complete (type %d)\n",
|
|
type);
|
|
}
|
|
|
|
void
|
|
sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
|
|
struct sctp_nets *net)
|
|
{
|
|
int to_ticks;
|
|
struct sctp_timer *tmr;
|
|
|
|
if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL))
|
|
return;
|
|
|
|
to_ticks = 0;
|
|
|
|
tmr = NULL;
|
|
if (stcb) {
|
|
SCTP_TCB_LOCK_ASSERT(stcb);
|
|
}
|
|
switch (t_type) {
|
|
case SCTP_TIMER_TYPE_ZERO_COPY:
|
|
tmr = &inp->sctp_ep.zero_copy_timer;
|
|
to_ticks = SCTP_ZERO_COPY_TICK_DELAY;
|
|
break;
|
|
case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
|
|
tmr = &inp->sctp_ep.zero_copy_sendq_timer;
|
|
to_ticks = SCTP_ZERO_COPY_SENDQ_TICK_DELAY;
|
|
break;
|
|
case SCTP_TIMER_TYPE_ADDR_WQ:
|
|
/* Only 1 tick away :-) */
|
|
tmr = &SCTP_BASE_INFO(addr_wq_timer);
|
|
to_ticks = SCTP_ADDRESS_TICK_DELAY;
|
|
break;
|
|
case SCTP_TIMER_TYPE_ITERATOR:
|
|
{
|
|
struct sctp_iterator *it;
|
|
|
|
it = (struct sctp_iterator *)inp;
|
|
tmr = &it->tmr;
|
|
to_ticks = SCTP_ITERATOR_TICKS;
|
|
}
|
|
break;
|
|
case SCTP_TIMER_TYPE_SEND:
|
|
/* Here we use the RTO timer */
|
|
{
|
|
int rto_val;
|
|
|
|
if ((stcb == NULL) || (net == NULL)) {
|
|
return;
|
|
}
|
|
tmr = &net->rxt_timer;
|
|
if (net->RTO == 0) {
|
|
rto_val = stcb->asoc.initial_rto;
|
|
} else {
|
|
rto_val = net->RTO;
|
|
}
|
|
to_ticks = MSEC_TO_TICKS(rto_val);
|
|
}
|
|
break;
|
|
case SCTP_TIMER_TYPE_INIT:
|
|
/*
|
|
* Here we use the INIT timer default usually about 1
|
|
* minute.
|
|
*/
|
|
if ((stcb == NULL) || (net == NULL)) {
|
|
return;
|
|
}
|
|
tmr = &net->rxt_timer;
|
|
if (net->RTO == 0) {
|
|
to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
|
|
} else {
|
|
to_ticks = MSEC_TO_TICKS(net->RTO);
|
|
}
|
|
break;
|
|
case SCTP_TIMER_TYPE_RECV:
|
|
/*
|
|
* Here we use the Delayed-Ack timer value from the inp
|
|
* ususually about 200ms.
|
|
*/
|
|
if (stcb == NULL) {
|
|
return;
|
|
}
|
|
tmr = &stcb->asoc.dack_timer;
|
|
to_ticks = MSEC_TO_TICKS(stcb->asoc.delayed_ack);
|
|
break;
|
|
case SCTP_TIMER_TYPE_SHUTDOWN:
|
|
/* Here we use the RTO of the destination. */
|
|
if ((stcb == NULL) || (net == NULL)) {
|
|
return;
|
|
}
|
|
if (net->RTO == 0) {
|
|
to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
|
|
} else {
|
|
to_ticks = MSEC_TO_TICKS(net->RTO);
|
|
}
|
|
tmr = &net->rxt_timer;
|
|
break;
|
|
case SCTP_TIMER_TYPE_HEARTBEAT:
|
|
/*
|
|
* the net is used here so that we can add in the RTO. Even
|
|
* though we use a different timer. We also add the HB timer
|
|
* PLUS a random jitter.
|
|
*/
|
|
if ((inp == NULL) || (stcb == NULL)) {
|
|
return;
|
|
} else {
|
|
uint32_t rndval;
|
|
uint8_t this_random;
|
|
int cnt_of_unconf = 0;
|
|
struct sctp_nets *lnet;
|
|
|
|
TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
|
|
if ((lnet->dest_state & SCTP_ADDR_UNCONFIRMED) &&
|
|
(lnet->dest_state & SCTP_ADDR_REACHABLE)) {
|
|
cnt_of_unconf++;
|
|
}
|
|
}
|
|
if (cnt_of_unconf) {
|
|
net = lnet = NULL;
|
|
(void)sctp_heartbeat_timer(inp, stcb, lnet, cnt_of_unconf);
|
|
}
|
|
if (stcb->asoc.hb_random_idx > 3) {
|
|
rndval = sctp_select_initial_TSN(&inp->sctp_ep);
|
|
memcpy(stcb->asoc.hb_random_values, &rndval,
|
|
sizeof(stcb->asoc.hb_random_values));
|
|
stcb->asoc.hb_random_idx = 0;
|
|
}
|
|
this_random = stcb->asoc.hb_random_values[stcb->asoc.hb_random_idx];
|
|
stcb->asoc.hb_random_idx++;
|
|
stcb->asoc.hb_ect_randombit = 0;
|
|
/*
|
|
* this_random will be 0 - 256 ms RTO is in ms.
|
|
*/
|
|
if ((stcb->asoc.hb_is_disabled) &&
|
|
(cnt_of_unconf == 0)) {
|
|
return;
|
|
}
|
|
if (net) {
|
|
int delay;
|
|
|
|
delay = stcb->asoc.heart_beat_delay;
|
|
TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
|
|
if ((lnet->dest_state & SCTP_ADDR_UNCONFIRMED) &&
|
|
((lnet->dest_state & SCTP_ADDR_OUT_OF_SCOPE) == 0) &&
|
|
(lnet->dest_state & SCTP_ADDR_REACHABLE)) {
|
|
delay = 0;
|
|
}
|
|
}
|
|
if (net->RTO == 0) {
|
|
/* Never been checked */
|
|
to_ticks = this_random + stcb->asoc.initial_rto + delay;
|
|
} else {
|
|
/* set rto_val to the ms */
|
|
to_ticks = delay + net->RTO + this_random;
|
|
}
|
|
} else {
|
|
if (cnt_of_unconf) {
|
|
to_ticks = this_random + stcb->asoc.initial_rto;
|
|
} else {
|
|
to_ticks = stcb->asoc.heart_beat_delay + this_random + stcb->asoc.initial_rto;
|
|
}
|
|
}
|
|
/*
|
|
* Now we must convert the to_ticks that are now in
|
|
* ms to ticks.
|
|
*/
|
|
to_ticks = MSEC_TO_TICKS(to_ticks);
|
|
tmr = &stcb->asoc.hb_timer;
|
|
}
|
|
break;
|
|
case SCTP_TIMER_TYPE_COOKIE:
|
|
/*
|
|
* Here we can use the RTO timer from the network since one
|
|
* RTT was compelete. If a retran happened then we will be
|
|
* using the RTO initial value.
|
|
*/
|
|
if ((stcb == NULL) || (net == NULL)) {
|
|
return;
|
|
}
|
|
if (net->RTO == 0) {
|
|
to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
|
|
} else {
|
|
to_ticks = MSEC_TO_TICKS(net->RTO);
|
|
}
|
|
tmr = &net->rxt_timer;
|
|
break;
|
|
case SCTP_TIMER_TYPE_NEWCOOKIE:
|
|
/*
|
|
* nothing needed but the endpoint here ususually about 60
|
|
* minutes.
|
|
*/
|
|
if (inp == NULL) {
|
|
return;
|
|
}
|
|
tmr = &inp->sctp_ep.signature_change;
|
|
to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_SIGNATURE];
|
|
break;
|
|
case SCTP_TIMER_TYPE_ASOCKILL:
|
|
if (stcb == NULL) {
|
|
return;
|
|
}
|
|
tmr = &stcb->asoc.strreset_timer;
|
|
to_ticks = MSEC_TO_TICKS(SCTP_ASOC_KILL_TIMEOUT);
|
|
break;
|
|
case SCTP_TIMER_TYPE_INPKILL:
|
|
/*
|
|
* The inp is setup to die. We re-use the signature_chage
|
|
* timer since that has stopped and we are in the GONE
|
|
* state.
|
|
*/
|
|
if (inp == NULL) {
|
|
return;
|
|
}
|
|
tmr = &inp->sctp_ep.signature_change;
|
|
to_ticks = MSEC_TO_TICKS(SCTP_INP_KILL_TIMEOUT);
|
|
break;
|
|
case SCTP_TIMER_TYPE_PATHMTURAISE:
|
|
/*
|
|
* Here we use the value found in the EP for PMTU ususually
|
|
* about 10 minutes.
|
|
*/
|
|
if ((stcb == NULL) || (inp == NULL)) {
|
|
return;
|
|
}
|
|
if (net == NULL) {
|
|
return;
|
|
}
|
|
to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_PMTU];
|
|
tmr = &net->pmtu_timer;
|
|
break;
|
|
case SCTP_TIMER_TYPE_SHUTDOWNACK:
|
|
/* Here we use the RTO of the destination */
|
|
if ((stcb == NULL) || (net == NULL)) {
|
|
return;
|
|
}
|
|
if (net->RTO == 0) {
|
|
to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
|
|
} else {
|
|
to_ticks = MSEC_TO_TICKS(net->RTO);
|
|
}
|
|
tmr = &net->rxt_timer;
|
|
break;
|
|
case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
|
|
/*
|
|
* Here we use the endpoints shutdown guard timer usually
|
|
* about 3 minutes.
|
|
*/
|
|
if ((inp == NULL) || (stcb == NULL)) {
|
|
return;
|
|
}
|
|
to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN];
|
|
tmr = &stcb->asoc.shut_guard_timer;
|
|
break;
|
|
case SCTP_TIMER_TYPE_STRRESET:
|
|
/*
|
|
* Here the timer comes from the stcb but its value is from
|
|
* the net's RTO.
|
|
*/
|
|
if ((stcb == NULL) || (net == NULL)) {
|
|
return;
|
|
}
|
|
if (net->RTO == 0) {
|
|
to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
|
|
} else {
|
|
to_ticks = MSEC_TO_TICKS(net->RTO);
|
|
}
|
|
tmr = &stcb->asoc.strreset_timer;
|
|
break;
|
|
|
|
case SCTP_TIMER_TYPE_EARLYFR:
|
|
{
|
|
unsigned int msec;
|
|
|
|
if ((stcb == NULL) || (net == NULL)) {
|
|
return;
|
|
}
|
|
if (net->flight_size > net->cwnd) {
|
|
/* no need to start */
|
|
return;
|
|
}
|
|
SCTP_STAT_INCR(sctps_earlyfrstart);
|
|
if (net->lastsa == 0) {
|
|
/* Hmm no rtt estimate yet? */
|
|
msec = stcb->asoc.initial_rto >> 2;
|
|
} else {
|
|
msec = ((net->lastsa >> 2) + net->lastsv) >> 1;
|
|
}
|
|
if (msec < SCTP_BASE_SYSCTL(sctp_early_fr_msec)) {
|
|
msec = SCTP_BASE_SYSCTL(sctp_early_fr_msec);
|
|
if (msec < SCTP_MINFR_MSEC_FLOOR) {
|
|
msec = SCTP_MINFR_MSEC_FLOOR;
|
|
}
|
|
}
|
|
to_ticks = MSEC_TO_TICKS(msec);
|
|
tmr = &net->fr_timer;
|
|
}
|
|
break;
|
|
case SCTP_TIMER_TYPE_ASCONF:
|
|
/*
|
|
* Here the timer comes from the stcb but its value is from
|
|
* the net's RTO.
|
|
*/
|
|
if ((stcb == NULL) || (net == NULL)) {
|
|
return;
|
|
}
|
|
if (net->RTO == 0) {
|
|
to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
|
|
} else {
|
|
to_ticks = MSEC_TO_TICKS(net->RTO);
|
|
}
|
|
tmr = &stcb->asoc.asconf_timer;
|
|
break;
|
|
case SCTP_TIMER_TYPE_PRIM_DELETED:
|
|
if ((stcb == NULL) || (net != NULL)) {
|
|
return;
|
|
}
|
|
to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
|
|
tmr = &stcb->asoc.delete_prim_timer;
|
|
break;
|
|
case SCTP_TIMER_TYPE_AUTOCLOSE:
|
|
if (stcb == NULL) {
|
|
return;
|
|
}
|
|
if (stcb->asoc.sctp_autoclose_ticks == 0) {
|
|
/*
|
|
* Really an error since stcb is NOT set to
|
|
* autoclose
|
|
*/
|
|
return;
|
|
}
|
|
to_ticks = stcb->asoc.sctp_autoclose_ticks;
|
|
tmr = &stcb->asoc.autoclose_timer;
|
|
break;
|
|
default:
|
|
SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
|
|
__FUNCTION__, t_type);
|
|
return;
|
|
break;
|
|
};
|
|
if ((to_ticks <= 0) || (tmr == NULL)) {
|
|
SCTPDBG(SCTP_DEBUG_TIMER1, "%s: %d:software error to_ticks:%d tmr:%p not set ??\n",
|
|
__FUNCTION__, t_type, to_ticks, tmr);
|
|
return;
|
|
}
|
|
if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
|
|
/*
|
|
* we do NOT allow you to have it already running. if it is
|
|
* we leave the current one up unchanged
|
|
*/
|
|
return;
|
|
}
|
|
/* At this point we can proceed */
|
|
if (t_type == SCTP_TIMER_TYPE_SEND) {
|
|
stcb->asoc.num_send_timers_up++;
|
|
}
|
|
tmr->stopped_from = 0;
|
|
tmr->type = t_type;
|
|
tmr->ep = (void *)inp;
|
|
tmr->tcb = (void *)stcb;
|
|
tmr->net = (void *)net;
|
|
tmr->self = (void *)tmr;
|
|
tmr->ticks = sctp_get_tick_count();
|
|
(void)SCTP_OS_TIMER_START(&tmr->timer, to_ticks, sctp_timeout_handler, tmr);
|
|
return;
|
|
}
|
|
|
|
void
|
|
sctp_timer_stop(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
|
|
struct sctp_nets *net, uint32_t from)
|
|
{
|
|
struct sctp_timer *tmr;
|
|
|
|
if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) &&
|
|
(inp == NULL))
|
|
return;
|
|
|
|
tmr = NULL;
|
|
if (stcb) {
|
|
SCTP_TCB_LOCK_ASSERT(stcb);
|
|
}
|
|
switch (t_type) {
|
|
case SCTP_TIMER_TYPE_ZERO_COPY:
|
|
tmr = &inp->sctp_ep.zero_copy_timer;
|
|
break;
|
|
case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
|
|
tmr = &inp->sctp_ep.zero_copy_sendq_timer;
|
|
break;
|
|
case SCTP_TIMER_TYPE_ADDR_WQ:
|
|
tmr = &SCTP_BASE_INFO(addr_wq_timer);
|
|
break;
|
|
case SCTP_TIMER_TYPE_EARLYFR:
|
|
if ((stcb == NULL) || (net == NULL)) {
|
|
return;
|
|
}
|
|
tmr = &net->fr_timer;
|
|
SCTP_STAT_INCR(sctps_earlyfrstop);
|
|
break;
|
|
case SCTP_TIMER_TYPE_ITERATOR:
|
|
{
|
|
struct sctp_iterator *it;
|
|
|
|
it = (struct sctp_iterator *)inp;
|
|
tmr = &it->tmr;
|
|
}
|
|
break;
|
|
case SCTP_TIMER_TYPE_SEND:
|
|
if ((stcb == NULL) || (net == NULL)) {
|
|
return;
|
|
}
|
|
tmr = &net->rxt_timer;
|
|
break;
|
|
case SCTP_TIMER_TYPE_INIT:
|
|
if ((stcb == NULL) || (net == NULL)) {
|
|
return;
|
|
}
|
|
tmr = &net->rxt_timer;
|
|
break;
|
|
case SCTP_TIMER_TYPE_RECV:
|
|
if (stcb == NULL) {
|
|
return;
|
|
}
|
|
tmr = &stcb->asoc.dack_timer;
|
|
break;
|
|
case SCTP_TIMER_TYPE_SHUTDOWN:
|
|
if ((stcb == NULL) || (net == NULL)) {
|
|
return;
|
|
}
|
|
tmr = &net->rxt_timer;
|
|
break;
|
|
case SCTP_TIMER_TYPE_HEARTBEAT:
|
|
if (stcb == NULL) {
|
|
return;
|
|
}
|
|
tmr = &stcb->asoc.hb_timer;
|
|
break;
|
|
case SCTP_TIMER_TYPE_COOKIE:
|
|
if ((stcb == NULL) || (net == NULL)) {
|
|
return;
|
|
}
|
|
tmr = &net->rxt_timer;
|
|
break;
|
|
case SCTP_TIMER_TYPE_NEWCOOKIE:
|
|
/* nothing needed but the endpoint here */
|
|
tmr = &inp->sctp_ep.signature_change;
|
|
/*
|
|
* We re-use the newcookie timer for the INP kill timer. We
|
|
* must assure that we do not kill it by accident.
|
|
*/
|
|
break;
|
|
case SCTP_TIMER_TYPE_ASOCKILL:
|
|
/*
|
|
* Stop the asoc kill timer.
|
|
*/
|
|
if (stcb == NULL) {
|
|
return;
|
|
}
|
|
tmr = &stcb->asoc.strreset_timer;
|
|
break;
|
|
|
|
case SCTP_TIMER_TYPE_INPKILL:
|
|
/*
|
|
* The inp is setup to die. We re-use the signature_chage
|
|
* timer since that has stopped and we are in the GONE
|
|
* state.
|
|
*/
|
|
tmr = &inp->sctp_ep.signature_change;
|
|
break;
|
|
case SCTP_TIMER_TYPE_PATHMTURAISE:
|
|
if ((stcb == NULL) || (net == NULL)) {
|
|
return;
|
|
}
|
|
tmr = &net->pmtu_timer;
|
|
break;
|
|
case SCTP_TIMER_TYPE_SHUTDOWNACK:
|
|
if ((stcb == NULL) || (net == NULL)) {
|
|
return;
|
|
}
|
|
tmr = &net->rxt_timer;
|
|
break;
|
|
case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
|
|
if (stcb == NULL) {
|
|
return;
|
|
}
|
|
tmr = &stcb->asoc.shut_guard_timer;
|
|
break;
|
|
case SCTP_TIMER_TYPE_STRRESET:
|
|
if (stcb == NULL) {
|
|
return;
|
|
}
|
|
tmr = &stcb->asoc.strreset_timer;
|
|
break;
|
|
case SCTP_TIMER_TYPE_ASCONF:
|
|
if (stcb == NULL) {
|
|
return;
|
|
}
|
|
tmr = &stcb->asoc.asconf_timer;
|
|
break;
|
|
case SCTP_TIMER_TYPE_PRIM_DELETED:
|
|
if (stcb == NULL) {
|
|
return;
|
|
}
|
|
tmr = &stcb->asoc.delete_prim_timer;
|
|
break;
|
|
case SCTP_TIMER_TYPE_AUTOCLOSE:
|
|
if (stcb == NULL) {
|
|
return;
|
|
}
|
|
tmr = &stcb->asoc.autoclose_timer;
|
|
break;
|
|
default:
|
|
SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
|
|
__FUNCTION__, t_type);
|
|
break;
|
|
};
|
|
if (tmr == NULL) {
|
|
return;
|
|
}
|
|
if ((tmr->type != t_type) && tmr->type) {
|
|
/*
|
|
* Ok we have a timer that is under joint use. Cookie timer
|
|
* per chance with the SEND timer. We therefore are NOT
|
|
* running the timer that the caller wants stopped. So just
|
|
* return.
|
|
*/
|
|
return;
|
|
}
|
|
if ((t_type == SCTP_TIMER_TYPE_SEND) && (stcb != NULL)) {
|
|
stcb->asoc.num_send_timers_up--;
|
|
if (stcb->asoc.num_send_timers_up < 0) {
|
|
stcb->asoc.num_send_timers_up = 0;
|
|
}
|
|
}
|
|
tmr->self = NULL;
|
|
tmr->stopped_from = from;
|
|
(void)SCTP_OS_TIMER_STOP(&tmr->timer);
|
|
return;
|
|
}
|
|
|
|
uint32_t
|
|
sctp_calculate_len(struct mbuf *m)
|
|
{
|
|
uint32_t tlen = 0;
|
|
struct mbuf *at;
|
|
|
|
at = m;
|
|
while (at) {
|
|
tlen += SCTP_BUF_LEN(at);
|
|
at = SCTP_BUF_NEXT(at);
|
|
}
|
|
return (tlen);
|
|
}
|
|
|
|
void
|
|
sctp_mtu_size_reset(struct sctp_inpcb *inp,
|
|
struct sctp_association *asoc, uint32_t mtu)
|
|
{
|
|
/*
|
|
* Reset the P-MTU size on this association, this involves changing
|
|
* the asoc MTU, going through ANY chunk+overhead larger than mtu to
|
|
* allow the DF flag to be cleared.
|
|
*/
|
|
struct sctp_tmit_chunk *chk;
|
|
unsigned int eff_mtu, ovh;
|
|
|
|
#ifdef SCTP_PRINT_FOR_B_AND_M
|
|
SCTP_PRINTF("sctp_mtu_size_reset(%p, asoc:%p mtu:%d\n",
|
|
inp, asoc, mtu);
|
|
#endif
|
|
asoc->smallest_mtu = mtu;
|
|
if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
|
|
ovh = SCTP_MIN_OVERHEAD;
|
|
} else {
|
|
ovh = SCTP_MIN_V4_OVERHEAD;
|
|
}
|
|
eff_mtu = mtu - ovh;
|
|
TAILQ_FOREACH(chk, &asoc->send_queue, sctp_next) {
|
|
|
|
if (chk->send_size > eff_mtu) {
|
|
chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
|
|
}
|
|
}
|
|
TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) {
|
|
if (chk->send_size > eff_mtu) {
|
|
chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* given an association and starting time of the current RTT period return
|
|
* RTO in number of msecs net should point to the current network
|
|
*/
|
|
uint32_t
|
|
sctp_calculate_rto(struct sctp_tcb *stcb,
|
|
struct sctp_association *asoc,
|
|
struct sctp_nets *net,
|
|
struct timeval *told,
|
|
int safe)
|
|
{
|
|
/*-
|
|
* given an association and the starting time of the current RTT
|
|
* period (in value1/value2) return RTO in number of msecs.
|
|
*/
|
|
int calc_time = 0;
|
|
int o_calctime;
|
|
uint32_t new_rto = 0;
|
|
int first_measure = 0;
|
|
struct timeval now, then, *old;
|
|
|
|
/* Copy it out for sparc64 */
|
|
if (safe == sctp_align_unsafe_makecopy) {
|
|
old = &then;
|
|
memcpy(&then, told, sizeof(struct timeval));
|
|
} else if (safe == sctp_align_safe_nocopy) {
|
|
old = told;
|
|
} else {
|
|
/* error */
|
|
SCTP_PRINTF("Huh, bad rto calc call\n");
|
|
return (0);
|
|
}
|
|
/************************/
|
|
/* 1. calculate new RTT */
|
|
/************************/
|
|
/* get the current time */
|
|
(void)SCTP_GETTIME_TIMEVAL(&now);
|
|
/* compute the RTT value */
|
|
if ((u_long)now.tv_sec > (u_long)old->tv_sec) {
|
|
calc_time = ((u_long)now.tv_sec - (u_long)old->tv_sec) * 1000;
|
|
if ((u_long)now.tv_usec > (u_long)old->tv_usec) {
|
|
calc_time += (((u_long)now.tv_usec -
|
|
(u_long)old->tv_usec) / 1000);
|
|
} else if ((u_long)now.tv_usec < (u_long)old->tv_usec) {
|
|
/* Borrow 1,000ms from current calculation */
|
|
calc_time -= 1000;
|
|
/* Add in the slop over */
|
|
calc_time += ((int)now.tv_usec / 1000);
|
|
/* Add in the pre-second ms's */
|
|
calc_time += (((int)1000000 - (int)old->tv_usec) / 1000);
|
|
}
|
|
} else if ((u_long)now.tv_sec == (u_long)old->tv_sec) {
|
|
if ((u_long)now.tv_usec > (u_long)old->tv_usec) {
|
|
calc_time = ((u_long)now.tv_usec -
|
|
(u_long)old->tv_usec) / 1000;
|
|
} else if ((u_long)now.tv_usec < (u_long)old->tv_usec) {
|
|
/* impossible .. garbage in nothing out */
|
|
goto calc_rto;
|
|
} else if ((u_long)now.tv_usec == (u_long)old->tv_usec) {
|
|
/*
|
|
* We have to have 1 usec :-D this must be the
|
|
* loopback.
|
|
*/
|
|
calc_time = 1;
|
|
} else {
|
|
/* impossible .. garbage in nothing out */
|
|
goto calc_rto;
|
|
}
|
|
} else {
|
|
/* Clock wrapped? */
|
|
goto calc_rto;
|
|
}
|
|
/***************************/
|
|
/* 2. update RTTVAR & SRTT */
|
|
/***************************/
|
|
o_calctime = calc_time;
|
|
/* this is Van Jacobson's integer version */
|
|
if (net->RTO_measured) {
|
|
calc_time -= (net->lastsa >> SCTP_RTT_SHIFT); /* take away 1/8th when
|
|
* shift=3 */
|
|
if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
|
|
rto_logging(net, SCTP_LOG_RTTVAR);
|
|
}
|
|
net->prev_rtt = o_calctime;
|
|
net->lastsa += calc_time; /* add 7/8th into sa when
|
|
* shift=3 */
|
|
if (calc_time < 0) {
|
|
calc_time = -calc_time;
|
|
}
|
|
calc_time -= (net->lastsv >> SCTP_RTT_VAR_SHIFT); /* take away 1/4 when
|
|
* VAR shift=2 */
|
|
net->lastsv += calc_time;
|
|
if (net->lastsv == 0) {
|
|
net->lastsv = SCTP_CLOCK_GRANULARITY;
|
|
}
|
|
} else {
|
|
/* First RTO measurment */
|
|
net->RTO_measured = 1;
|
|
net->lastsa = calc_time << SCTP_RTT_SHIFT; /* Multiply by 8 when
|
|
* shift=3 */
|
|
net->lastsv = calc_time;
|
|
if (net->lastsv == 0) {
|
|
net->lastsv = SCTP_CLOCK_GRANULARITY;
|
|
}
|
|
first_measure = 1;
|
|
net->prev_rtt = o_calctime;
|
|
if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
|
|
rto_logging(net, SCTP_LOG_INITIAL_RTT);
|
|
}
|
|
}
|
|
calc_rto:
|
|
new_rto = (net->lastsa >> SCTP_RTT_SHIFT) + net->lastsv;
|
|
if ((new_rto > SCTP_SAT_NETWORK_MIN) &&
|
|
(stcb->asoc.sat_network_lockout == 0)) {
|
|
stcb->asoc.sat_network = 1;
|
|
} else if ((!first_measure) && stcb->asoc.sat_network) {
|
|
stcb->asoc.sat_network = 0;
|
|
stcb->asoc.sat_network_lockout = 1;
|
|
}
|
|
/* bound it, per C6/C7 in Section 5.3.1 */
|
|
if (new_rto < stcb->asoc.minrto) {
|
|
new_rto = stcb->asoc.minrto;
|
|
}
|
|
if (new_rto > stcb->asoc.maxrto) {
|
|
new_rto = stcb->asoc.maxrto;
|
|
}
|
|
/* we are now returning the RTO */
|
|
return (new_rto);
|
|
}
|
|
|
|
/*
|
|
* return a pointer to a contiguous piece of data from the given mbuf chain
|
|
* starting at 'off' for 'len' bytes. If the desired piece spans more than
|
|
* one mbuf, a copy is made at 'ptr'. caller must ensure that the buffer size
|
|
* is >= 'len' returns NULL if there there isn't 'len' bytes in the chain.
|
|
*/
|
|
caddr_t
|
|
sctp_m_getptr(struct mbuf *m, int off, int len, uint8_t * in_ptr)
|
|
{
|
|
uint32_t count;
|
|
uint8_t *ptr;
|
|
|
|
ptr = in_ptr;
|
|
if ((off < 0) || (len <= 0))
|
|
return (NULL);
|
|
|
|
/* find the desired start location */
|
|
while ((m != NULL) && (off > 0)) {
|
|
if (off < SCTP_BUF_LEN(m))
|
|
break;
|
|
off -= SCTP_BUF_LEN(m);
|
|
m = SCTP_BUF_NEXT(m);
|
|
}
|
|
if (m == NULL)
|
|
return (NULL);
|
|
|
|
/* is the current mbuf large enough (eg. contiguous)? */
|
|
if ((SCTP_BUF_LEN(m) - off) >= len) {
|
|
return (mtod(m, caddr_t)+off);
|
|
} else {
|
|
/* else, it spans more than one mbuf, so save a temp copy... */
|
|
while ((m != NULL) && (len > 0)) {
|
|
count = min(SCTP_BUF_LEN(m) - off, len);
|
|
bcopy(mtod(m, caddr_t)+off, ptr, count);
|
|
len -= count;
|
|
ptr += count;
|
|
off = 0;
|
|
m = SCTP_BUF_NEXT(m);
|
|
}
|
|
if ((m == NULL) && (len > 0))
|
|
return (NULL);
|
|
else
|
|
return ((caddr_t)in_ptr);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
struct sctp_paramhdr *
|
|
sctp_get_next_param(struct mbuf *m,
|
|
int offset,
|
|
struct sctp_paramhdr *pull,
|
|
int pull_limit)
|
|
{
|
|
/* This just provides a typed signature to Peter's Pull routine */
|
|
return ((struct sctp_paramhdr *)sctp_m_getptr(m, offset, pull_limit,
|
|
(uint8_t *) pull));
|
|
}
|
|
|
|
|
|
int
|
|
sctp_add_pad_tombuf(struct mbuf *m, int padlen)
|
|
{
|
|
/*
|
|
* add padlen bytes of 0 filled padding to the end of the mbuf. If
|
|
* padlen is > 3 this routine will fail.
|
|
*/
|
|
uint8_t *dp;
|
|
int i;
|
|
|
|
if (padlen > 3) {
|
|
SCTP_LTRACE_ERR_RET_PKT(m, NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
|
|
return (ENOBUFS);
|
|
}
|
|
if (padlen <= M_TRAILINGSPACE(m)) {
|
|
/*
|
|
* The easy way. We hope the majority of the time we hit
|
|
* here :)
|
|
*/
|
|
dp = (uint8_t *) (mtod(m, caddr_t)+SCTP_BUF_LEN(m));
|
|
SCTP_BUF_LEN(m) += padlen;
|
|
} else {
|
|
/* Hard way we must grow the mbuf */
|
|
struct mbuf *tmp;
|
|
|
|
tmp = sctp_get_mbuf_for_msg(padlen, 0, M_DONTWAIT, 1, MT_DATA);
|
|
if (tmp == NULL) {
|
|
/* Out of space GAK! we are in big trouble. */
|
|
SCTP_LTRACE_ERR_RET_PKT(m, NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
|
|
return (ENOSPC);
|
|
}
|
|
/* setup and insert in middle */
|
|
SCTP_BUF_LEN(tmp) = padlen;
|
|
SCTP_BUF_NEXT(tmp) = NULL;
|
|
SCTP_BUF_NEXT(m) = tmp;
|
|
dp = mtod(tmp, uint8_t *);
|
|
}
|
|
/* zero out the pad */
|
|
for (i = 0; i < padlen; i++) {
|
|
*dp = 0;
|
|
dp++;
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
sctp_pad_lastmbuf(struct mbuf *m, int padval, struct mbuf *last_mbuf)
|
|
{
|
|
/* find the last mbuf in chain and pad it */
|
|
struct mbuf *m_at;
|
|
|
|
m_at = m;
|
|
if (last_mbuf) {
|
|
return (sctp_add_pad_tombuf(last_mbuf, padval));
|
|
} else {
|
|
while (m_at) {
|
|
if (SCTP_BUF_NEXT(m_at) == NULL) {
|
|
return (sctp_add_pad_tombuf(m_at, padval));
|
|
}
|
|
m_at = SCTP_BUF_NEXT(m_at);
|
|
}
|
|
}
|
|
SCTP_LTRACE_ERR_RET_PKT(m, NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT);
|
|
return (EFAULT);
|
|
}
|
|
|
|
int sctp_asoc_change_wake = 0;
|
|
|
|
static void
|
|
sctp_notify_assoc_change(uint32_t event, struct sctp_tcb *stcb,
|
|
uint32_t error, void *data, int so_locked
|
|
#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
|
|
SCTP_UNUSED
|
|
#endif
|
|
)
|
|
{
|
|
struct mbuf *m_notify;
|
|
struct sctp_assoc_change *sac;
|
|
struct sctp_queued_to_read *control;
|
|
|
|
#if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
|
|
struct socket *so;
|
|
|
|
#endif
|
|
|
|
/*
|
|
* For TCP model AND UDP connected sockets we will send an error up
|
|
* when an ABORT comes in.
|
|
*/
|
|
if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
|
|
(stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
|
|
((event == SCTP_COMM_LOST) || (event == SCTP_CANT_STR_ASSOC))) {
|
|
if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) {
|
|
SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNREFUSED);
|
|
stcb->sctp_socket->so_error = ECONNREFUSED;
|
|
} else {
|
|
SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
|
|
stcb->sctp_socket->so_error = ECONNRESET;
|
|
}
|
|
/* Wake ANY sleepers */
|
|
#if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
|
|
so = SCTP_INP_SO(stcb->sctp_ep);
|
|
if (!so_locked) {
|
|
atomic_add_int(&stcb->asoc.refcnt, 1);
|
|
SCTP_TCB_UNLOCK(stcb);
|
|
SCTP_SOCKET_LOCK(so, 1);
|
|
SCTP_TCB_LOCK(stcb);
|
|
atomic_subtract_int(&stcb->asoc.refcnt, 1);
|
|
if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
|
|
SCTP_SOCKET_UNLOCK(so, 1);
|
|
return;
|
|
}
|
|
}
|
|
#endif
|
|
sorwakeup(stcb->sctp_socket);
|
|
sowwakeup(stcb->sctp_socket);
|
|
#if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
|
|
if (!so_locked) {
|
|
SCTP_SOCKET_UNLOCK(so, 1);
|
|
}
|
|
#endif
|
|
sctp_asoc_change_wake++;
|
|
}
|
|
if (sctp_is_feature_off(stcb->sctp_ep, SCTP_PCB_FLAGS_RECVASSOCEVNT)) {
|
|
/* event not enabled */
|
|
return;
|
|
}
|
|
m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_assoc_change), 0, M_DONTWAIT, 1, MT_DATA);
|
|
if (m_notify == NULL)
|
|
/* no space left */
|
|
return;
|
|
SCTP_BUF_LEN(m_notify) = 0;
|
|
|
|
sac = mtod(m_notify, struct sctp_assoc_change *);
|
|
sac->sac_type = SCTP_ASSOC_CHANGE;
|
|
sac->sac_flags = 0;
|
|
sac->sac_length = sizeof(struct sctp_assoc_change);
|
|
sac->sac_state = event;
|
|
sac->sac_error = error;
|
|
/* XXX verify these stream counts */
|
|
sac->sac_outbound_streams = stcb->asoc.streamoutcnt;
|
|
sac->sac_inbound_streams = stcb->asoc.streamincnt;
|
|
sac->sac_assoc_id = sctp_get_associd(stcb);
|
|
SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_assoc_change);
|
|
SCTP_BUF_NEXT(m_notify) = NULL;
|
|
control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
|
|
0, 0, 0, 0, 0, 0,
|
|
m_notify);
|
|
if (control == NULL) {
|
|
/* no memory */
|
|
sctp_m_freem(m_notify);
|
|
return;
|
|
}
|
|
control->length = SCTP_BUF_LEN(m_notify);
|
|
/* not that we need this */
|
|
control->tail_mbuf = m_notify;
|
|
control->spec_flags = M_NOTIFICATION;
|
|
sctp_add_to_readq(stcb->sctp_ep, stcb,
|
|
control,
|
|
&stcb->sctp_socket->so_rcv, 1, so_locked);
|
|
if (event == SCTP_COMM_LOST) {
|
|
/* Wake up any sleeper */
|
|
#if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
|
|
so = SCTP_INP_SO(stcb->sctp_ep);
|
|
if (!so_locked) {
|
|
atomic_add_int(&stcb->asoc.refcnt, 1);
|
|
SCTP_TCB_UNLOCK(stcb);
|
|
SCTP_SOCKET_LOCK(so, 1);
|
|
SCTP_TCB_LOCK(stcb);
|
|
atomic_subtract_int(&stcb->asoc.refcnt, 1);
|
|
if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
|
|
SCTP_SOCKET_UNLOCK(so, 1);
|
|
return;
|
|
}
|
|
}
|
|
#endif
|
|
sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket);
|
|
#if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
|
|
if (!so_locked) {
|
|
SCTP_SOCKET_UNLOCK(so, 1);
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
|
|
static void
|
|
sctp_notify_peer_addr_change(struct sctp_tcb *stcb, uint32_t state,
|
|
struct sockaddr *sa, uint32_t error)
|
|
{
|
|
struct mbuf *m_notify;
|
|
struct sctp_paddr_change *spc;
|
|
struct sctp_queued_to_read *control;
|
|
|
|
if (sctp_is_feature_off(stcb->sctp_ep, SCTP_PCB_FLAGS_RECVPADDREVNT)) {
|
|
/* event not enabled */
|
|
return;
|
|
}
|
|
m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_paddr_change), 0, M_DONTWAIT, 1, MT_DATA);
|
|
if (m_notify == NULL)
|
|
return;
|
|
SCTP_BUF_LEN(m_notify) = 0;
|
|
spc = mtod(m_notify, struct sctp_paddr_change *);
|
|
spc->spc_type = SCTP_PEER_ADDR_CHANGE;
|
|
spc->spc_flags = 0;
|
|
spc->spc_length = sizeof(struct sctp_paddr_change);
|
|
switch (sa->sa_family) {
|
|
case AF_INET:
|
|
memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
|
|
break;
|
|
#ifdef INET6
|
|
case AF_INET6:
|
|
{
|
|
struct sockaddr_in6 *sin6;
|
|
|
|
memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in6));
|
|
|
|
sin6 = (struct sockaddr_in6 *)&spc->spc_aaddr;
|
|
if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) {
|
|
if (sin6->sin6_scope_id == 0) {
|
|
/* recover scope_id for user */
|
|
(void)sa6_recoverscope(sin6);
|
|
} else {
|
|
/* clear embedded scope_id for user */
|
|
in6_clearscope(&sin6->sin6_addr);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
#endif
|
|
default:
|
|
/* TSNH */
|
|
break;
|
|
}
|
|
spc->spc_state = state;
|
|
spc->spc_error = error;
|
|
spc->spc_assoc_id = sctp_get_associd(stcb);
|
|
|
|
SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_paddr_change);
|
|
SCTP_BUF_NEXT(m_notify) = NULL;
|
|
|
|
/* append to socket */
|
|
control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
|
|
0, 0, 0, 0, 0, 0,
|
|
m_notify);
|
|
if (control == NULL) {
|
|
/* no memory */
|
|
sctp_m_freem(m_notify);
|
|
return;
|
|
}
|
|
control->length = SCTP_BUF_LEN(m_notify);
|
|
control->spec_flags = M_NOTIFICATION;
|
|
/* not that we need this */
|
|
control->tail_mbuf = m_notify;
|
|
sctp_add_to_readq(stcb->sctp_ep, stcb,
|
|
control,
|
|
&stcb->sctp_socket->so_rcv, 1, SCTP_SO_NOT_LOCKED);
|
|
}
|
|
|
|
|
|
static void
|
|
sctp_notify_send_failed(struct sctp_tcb *stcb, uint32_t error,
|
|
struct sctp_tmit_chunk *chk, int so_locked
|
|
#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
|
|
SCTP_UNUSED
|
|
#endif
|
|
)
|
|
{
|
|
struct mbuf *m_notify;
|
|
struct sctp_send_failed *ssf;
|
|
struct sctp_queued_to_read *control;
|
|
int length;
|
|
|
|
if (sctp_is_feature_off(stcb->sctp_ep, SCTP_PCB_FLAGS_RECVSENDFAILEVNT)) {
|
|
/* event not enabled */
|
|
return;
|
|
}
|
|
m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_send_failed), 0, M_DONTWAIT, 1, MT_DATA);
|
|
if (m_notify == NULL)
|
|
/* no space left */
|
|
return;
|
|
length = sizeof(struct sctp_send_failed) + chk->send_size;
|
|
length -= sizeof(struct sctp_data_chunk);
|
|
SCTP_BUF_LEN(m_notify) = 0;
|
|
ssf = mtod(m_notify, struct sctp_send_failed *);
|
|
ssf->ssf_type = SCTP_SEND_FAILED;
|
|
if (error == SCTP_NOTIFY_DATAGRAM_UNSENT)
|
|
ssf->ssf_flags = SCTP_DATA_UNSENT;
|
|
else
|
|
ssf->ssf_flags = SCTP_DATA_SENT;
|
|
ssf->ssf_length = length;
|
|
ssf->ssf_error = error;
|
|
/* not exactly what the user sent in, but should be close :) */
|
|
bzero(&ssf->ssf_info, sizeof(ssf->ssf_info));
|
|
ssf->ssf_info.sinfo_stream = chk->rec.data.stream_number;
|
|
ssf->ssf_info.sinfo_ssn = chk->rec.data.stream_seq;
|
|
ssf->ssf_info.sinfo_flags = chk->rec.data.rcv_flags;
|
|
ssf->ssf_info.sinfo_ppid = chk->rec.data.payloadtype;
|
|
ssf->ssf_info.sinfo_context = chk->rec.data.context;
|
|
ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
|
|
ssf->ssf_assoc_id = sctp_get_associd(stcb);
|
|
|
|
SCTP_BUF_NEXT(m_notify) = chk->data;
|
|
SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed);
|
|
if (chk->data) {
|
|
/*
|
|
* trim off the sctp chunk header(it should be there)
|
|
*/
|
|
if (chk->send_size >= sizeof(struct sctp_data_chunk)) {
|
|
m_adj(chk->data, sizeof(struct sctp_data_chunk));
|
|
sctp_mbuf_crush(chk->data);
|
|
chk->send_size -= sizeof(struct sctp_data_chunk);
|
|
}
|
|
}
|
|
/* Steal off the mbuf */
|
|
chk->data = NULL;
|
|
/*
|
|
* For this case, we check the actual socket buffer, since the assoc
|
|
* is going away we don't want to overfill the socket buffer for a
|
|
* non-reader
|
|
*/
|
|
if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
|
|
sctp_m_freem(m_notify);
|
|
return;
|
|
}
|
|
/* append to socket */
|
|
control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
|
|
0, 0, 0, 0, 0, 0,
|
|
m_notify);
|
|
if (control == NULL) {
|
|
/* no memory */
|
|
sctp_m_freem(m_notify);
|
|
return;
|
|
}
|
|
control->spec_flags = M_NOTIFICATION;
|
|
sctp_add_to_readq(stcb->sctp_ep, stcb,
|
|
control,
|
|
&stcb->sctp_socket->so_rcv, 1, so_locked);
|
|
}
|
|
|
|
|
|
static void
|
|
sctp_notify_send_failed2(struct sctp_tcb *stcb, uint32_t error,
|
|
struct sctp_stream_queue_pending *sp, int so_locked
|
|
#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
|
|
SCTP_UNUSED
|
|
#endif
|
|
)
|
|
{
|
|
struct mbuf *m_notify;
|
|
struct sctp_send_failed *ssf;
|
|
struct sctp_queued_to_read *control;
|
|
int length;
|
|
|
|
if (sctp_is_feature_off(stcb->sctp_ep, SCTP_PCB_FLAGS_RECVSENDFAILEVNT)) {
|
|
/* event not enabled */
|
|
return;
|
|
}
|
|
length = sizeof(struct sctp_send_failed) + sp->length;
|
|
m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_send_failed), 0, M_DONTWAIT, 1, MT_DATA);
|
|
if (m_notify == NULL)
|
|
/* no space left */
|
|
return;
|
|
SCTP_BUF_LEN(m_notify) = 0;
|
|
ssf = mtod(m_notify, struct sctp_send_failed *);
|
|
ssf->ssf_type = SCTP_SEND_FAILED;
|
|
if (error == SCTP_NOTIFY_DATAGRAM_UNSENT)
|
|
ssf->ssf_flags = SCTP_DATA_UNSENT;
|
|
else
|
|
ssf->ssf_flags = SCTP_DATA_SENT;
|
|
ssf->ssf_length = length;
|
|
ssf->ssf_error = error;
|
|
/* not exactly what the user sent in, but should be close :) */
|
|
bzero(&ssf->ssf_info, sizeof(ssf->ssf_info));
|
|
ssf->ssf_info.sinfo_stream = sp->stream;
|
|
ssf->ssf_info.sinfo_ssn = sp->strseq;
|
|
if (sp->some_taken) {
|
|
ssf->ssf_info.sinfo_flags = SCTP_DATA_LAST_FRAG;
|
|
} else {
|
|
ssf->ssf_info.sinfo_flags = SCTP_DATA_NOT_FRAG;
|
|
}
|
|
ssf->ssf_info.sinfo_ppid = sp->ppid;
|
|
ssf->ssf_info.sinfo_context = sp->context;
|
|
ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
|
|
ssf->ssf_assoc_id = sctp_get_associd(stcb);
|
|
SCTP_BUF_NEXT(m_notify) = sp->data;
|
|
SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed);
|
|
|
|
/* Steal off the mbuf */
|
|
sp->data = NULL;
|
|
/*
|
|
* For this case, we check the actual socket buffer, since the assoc
|
|
* is going away we don't want to overfill the socket buffer for a
|
|
* non-reader
|
|
*/
|
|
if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
|
|
sctp_m_freem(m_notify);
|
|
return;
|
|
}
|
|
/* append to socket */
|
|
control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
|
|
0, 0, 0, 0, 0, 0,
|
|
m_notify);
|
|
if (control == NULL) {
|
|
/* no memory */
|
|
sctp_m_freem(m_notify);
|
|
return;
|
|
}
|
|
control->spec_flags = M_NOTIFICATION;
|
|
sctp_add_to_readq(stcb->sctp_ep, stcb,
|
|
control,
|
|
&stcb->sctp_socket->so_rcv, 1, so_locked);
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
sctp_notify_adaptation_layer(struct sctp_tcb *stcb,
|
|
uint32_t error)
|
|
{
|
|
struct mbuf *m_notify;
|
|
struct sctp_adaptation_event *sai;
|
|
struct sctp_queued_to_read *control;
|
|
|
|
if (sctp_is_feature_off(stcb->sctp_ep, SCTP_PCB_FLAGS_ADAPTATIONEVNT)) {
|
|
/* event not enabled */
|
|
return;
|
|
}
|
|
m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_adaption_event), 0, M_DONTWAIT, 1, MT_DATA);
|
|
if (m_notify == NULL)
|
|
/* no space left */
|
|
return;
|
|
SCTP_BUF_LEN(m_notify) = 0;
|
|
sai = mtod(m_notify, struct sctp_adaptation_event *);
|
|
sai->sai_type = SCTP_ADAPTATION_INDICATION;
|
|
sai->sai_flags = 0;
|
|
sai->sai_length = sizeof(struct sctp_adaptation_event);
|
|
sai->sai_adaptation_ind = stcb->asoc.peers_adaptation;
|
|
sai->sai_assoc_id = sctp_get_associd(stcb);
|
|
|
|
SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_adaptation_event);
|
|
SCTP_BUF_NEXT(m_notify) = NULL;
|
|
|
|
/* append to socket */
|
|
control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
|
|
0, 0, 0, 0, 0, 0,
|
|
m_notify);
|
|
if (control == NULL) {
|
|
/* no memory */
|
|
sctp_m_freem(m_notify);
|
|
return;
|
|
}
|
|
control->length = SCTP_BUF_LEN(m_notify);
|
|
control->spec_flags = M_NOTIFICATION;
|
|
/* not that we need this */
|
|
control->tail_mbuf = m_notify;
|
|
sctp_add_to_readq(stcb->sctp_ep, stcb,
|
|
control,
|
|
&stcb->sctp_socket->so_rcv, 1, SCTP_SO_NOT_LOCKED);
|
|
}
|
|
|
|
/* This always must be called with the read-queue LOCKED in the INP */
|
|
void
|
|
sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, uint32_t error,
|
|
int nolock, uint32_t val)
|
|
{
|
|
struct mbuf *m_notify;
|
|
struct sctp_pdapi_event *pdapi;
|
|
struct sctp_queued_to_read *control;
|
|
struct sockbuf *sb;
|
|
|
|
if (sctp_is_feature_off(stcb->sctp_ep, SCTP_PCB_FLAGS_PDAPIEVNT)) {
|
|
/* event not enabled */
|
|
return;
|
|
}
|
|
m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_pdapi_event), 0, M_DONTWAIT, 1, MT_DATA);
|
|
if (m_notify == NULL)
|
|
/* no space left */
|
|
return;
|
|
SCTP_BUF_LEN(m_notify) = 0;
|
|
pdapi = mtod(m_notify, struct sctp_pdapi_event *);
|
|
pdapi->pdapi_type = SCTP_PARTIAL_DELIVERY_EVENT;
|
|
pdapi->pdapi_flags = 0;
|
|
pdapi->pdapi_length = sizeof(struct sctp_pdapi_event);
|
|
pdapi->pdapi_indication = error;
|
|
pdapi->pdapi_stream = (val >> 16);
|
|
pdapi->pdapi_seq = (val & 0x0000ffff);
|
|
pdapi->pdapi_assoc_id = sctp_get_associd(stcb);
|
|
|
|
SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_pdapi_event);
|
|
SCTP_BUF_NEXT(m_notify) = NULL;
|
|
control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
|
|
0, 0, 0, 0, 0, 0,
|
|
m_notify);
|
|
if (control == NULL) {
|
|
/* no memory */
|
|
sctp_m_freem(m_notify);
|
|
return;
|
|
}
|
|
control->spec_flags = M_NOTIFICATION;
|
|
control->length = SCTP_BUF_LEN(m_notify);
|
|
/* not that we need this */
|
|
control->tail_mbuf = m_notify;
|
|
control->held_length = 0;
|
|
control->length = 0;
|
|
if (nolock == 0) {
|
|
SCTP_INP_READ_LOCK(stcb->sctp_ep);
|
|
}
|
|
sb = &stcb->sctp_socket->so_rcv;
|
|
if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
|
|
sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m_notify));
|
|
}
|
|
sctp_sballoc(stcb, sb, m_notify);
|
|
if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
|
|
sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
|
|
}
|
|
atomic_add_int(&control->length, SCTP_BUF_LEN(m_notify));
|
|
control->end_added = 1;
|
|
if (stcb->asoc.control_pdapi)
|
|
TAILQ_INSERT_AFTER(&stcb->sctp_ep->read_queue, stcb->asoc.control_pdapi, control, next);
|
|
else {
|
|
/* we really should not see this case */
|
|
TAILQ_INSERT_TAIL(&stcb->sctp_ep->read_queue, control, next);
|
|
}
|
|
if (nolock == 0) {
|
|
SCTP_INP_READ_UNLOCK(stcb->sctp_ep);
|
|
}
|
|
if (stcb->sctp_ep && stcb->sctp_socket) {
|
|
/* This should always be the case */
|
|
sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket);
|
|
}
|
|
}
|
|
|
|
static void
|
|
sctp_notify_shutdown_event(struct sctp_tcb *stcb)
|
|
{
|
|
struct mbuf *m_notify;
|
|
struct sctp_shutdown_event *sse;
|
|
struct sctp_queued_to_read *control;
|
|
|
|
/*
|
|
* For TCP model AND UDP connected sockets we will send an error up
|
|
* when an SHUTDOWN completes
|
|
*/
|
|
if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
|
|
(stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
|
|
/* mark socket closed for read/write and wakeup! */
|
|
#if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
|
|
struct socket *so;
|
|
|
|
so = SCTP_INP_SO(stcb->sctp_ep);
|
|
atomic_add_int(&stcb->asoc.refcnt, 1);
|
|
SCTP_TCB_UNLOCK(stcb);
|
|
SCTP_SOCKET_LOCK(so, 1);
|
|
SCTP_TCB_LOCK(stcb);
|
|
atomic_subtract_int(&stcb->asoc.refcnt, 1);
|
|
if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
|
|
SCTP_SOCKET_UNLOCK(so, 1);
|
|
return;
|
|
}
|
|
#endif
|
|
socantsendmore(stcb->sctp_socket);
|
|
#if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
|
|
SCTP_SOCKET_UNLOCK(so, 1);
|
|
#endif
|
|
}
|
|
if (sctp_is_feature_off(stcb->sctp_ep, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) {
|
|
/* event not enabled */
|
|
return;
|
|
}
|
|
m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_shutdown_event), 0, M_DONTWAIT, 1, MT_DATA);
|
|
if (m_notify == NULL)
|
|
/* no space left */
|
|
return;
|
|
sse = mtod(m_notify, struct sctp_shutdown_event *);
|
|
sse->sse_type = SCTP_SHUTDOWN_EVENT;
|
|
sse->sse_flags = 0;
|
|
sse->sse_length = sizeof(struct sctp_shutdown_event);
|
|
sse->sse_assoc_id = sctp_get_associd(stcb);
|
|
|
|
SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_shutdown_event);
|
|
SCTP_BUF_NEXT(m_notify) = NULL;
|
|
|
|
/* append to socket */
|
|
control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
|
|
0, 0, 0, 0, 0, 0,
|
|
m_notify);
|
|
if (control == NULL) {
|
|
/* no memory */
|
|
sctp_m_freem(m_notify);
|
|
return;
|
|
}
|
|
control->spec_flags = M_NOTIFICATION;
|
|
control->length = SCTP_BUF_LEN(m_notify);
|
|
/* not that we need this */
|
|
control->tail_mbuf = m_notify;
|
|
sctp_add_to_readq(stcb->sctp_ep, stcb,
|
|
control,
|
|
&stcb->sctp_socket->so_rcv, 1, SCTP_SO_NOT_LOCKED);
|
|
}
|
|
|
|
static void
|
|
sctp_notify_sender_dry_event(struct sctp_tcb *stcb,
|
|
int so_locked
|
|
#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
|
|
SCTP_UNUSED
|
|
#endif
|
|
)
|
|
{
|
|
struct mbuf *m_notify;
|
|
struct sctp_sender_dry_event *event;
|
|
struct sctp_queued_to_read *control;
|
|
|
|
if (sctp_is_feature_off(stcb->sctp_ep, SCTP_PCB_FLAGS_DRYEVNT)) {
|
|
/* event not enabled */
|
|
return;
|
|
}
|
|
m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_sender_dry_event), 0, M_DONTWAIT, 1, MT_DATA);
|
|
if (m_notify == NULL) {
|
|
/* no space left */
|
|
return;
|
|
}
|
|
SCTP_BUF_LEN(m_notify) = 0;
|
|
event = mtod(m_notify, struct sctp_sender_dry_event *);
|
|
event->sender_dry_type = SCTP_SENDER_DRY_EVENT;
|
|
event->sender_dry_flags = 0;
|
|
event->sender_dry_length = sizeof(struct sctp_sender_dry_event);
|
|
event->sender_dry_assoc_id = sctp_get_associd(stcb);
|
|
|
|
SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_sender_dry_event);
|
|
SCTP_BUF_NEXT(m_notify) = NULL;
|
|
|
|
/* append to socket */
|
|
control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
|
|
0, 0, 0, 0, 0, 0, m_notify);
|
|
if (control == NULL) {
|
|
/* no memory */
|
|
sctp_m_freem(m_notify);
|
|
return;
|
|
}
|
|
control->length = SCTP_BUF_LEN(m_notify);
|
|
control->spec_flags = M_NOTIFICATION;
|
|
/* not that we need this */
|
|
control->tail_mbuf = m_notify;
|
|
sctp_add_to_readq(stcb->sctp_ep, stcb, control,
|
|
&stcb->sctp_socket->so_rcv, 1, so_locked);
|
|
}
|
|
|
|
|
|
static void
|
|
sctp_notify_stream_reset_add(struct sctp_tcb *stcb, int number_entries, int flag)
|
|
{
|
|
struct mbuf *m_notify;
|
|
struct sctp_queued_to_read *control;
|
|
struct sctp_stream_reset_event *strreset;
|
|
int len;
|
|
|
|
if (sctp_is_feature_off(stcb->sctp_ep, SCTP_PCB_FLAGS_STREAM_RESETEVNT)) {
|
|
/* event not enabled */
|
|
return;
|
|
}
|
|
m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_DONTWAIT, 1, MT_DATA);
|
|
if (m_notify == NULL)
|
|
/* no space left */
|
|
return;
|
|
SCTP_BUF_LEN(m_notify) = 0;
|
|
len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t));
|
|
if (len > M_TRAILINGSPACE(m_notify)) {
|
|
/* never enough room */
|
|
sctp_m_freem(m_notify);
|
|
return;
|
|
}
|
|
strreset = mtod(m_notify, struct sctp_stream_reset_event *);
|
|
strreset->strreset_type = SCTP_STREAM_RESET_EVENT;
|
|
strreset->strreset_flags = SCTP_STRRESET_ADD_STREAM | flag;
|
|
strreset->strreset_length = len;
|
|
strreset->strreset_assoc_id = sctp_get_associd(stcb);
|
|
strreset->strreset_list[0] = number_entries;
|
|
|
|
SCTP_BUF_LEN(m_notify) = len;
|
|
SCTP_BUF_NEXT(m_notify) = NULL;
|
|
if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
|
|
/* no space */
|
|
sctp_m_freem(m_notify);
|
|
return;
|
|
}
|
|
/* append to socket */
|
|
control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
|
|
0, 0, 0, 0, 0, 0,
|
|
m_notify);
|
|
if (control == NULL) {
|
|
/* no memory */
|
|
sctp_m_freem(m_notify);
|
|
return;
|
|
}
|
|
control->spec_flags = M_NOTIFICATION;
|
|
control->length = SCTP_BUF_LEN(m_notify);
|
|
/* not that we need this */
|
|
control->tail_mbuf = m_notify;
|
|
sctp_add_to_readq(stcb->sctp_ep, stcb,
|
|
control,
|
|
&stcb->sctp_socket->so_rcv, 1, SCTP_SO_NOT_LOCKED);
|
|
}
|
|
|
|
|
|
static void
|
|
sctp_notify_stream_reset(struct sctp_tcb *stcb,
|
|
int number_entries, uint16_t * list, int flag)
|
|
{
|
|
struct mbuf *m_notify;
|
|
struct sctp_queued_to_read *control;
|
|
struct sctp_stream_reset_event *strreset;
|
|
int len;
|
|
|
|
if (sctp_is_feature_off(stcb->sctp_ep, SCTP_PCB_FLAGS_STREAM_RESETEVNT)) {
|
|
/* event not enabled */
|
|
return;
|
|
}
|
|
m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_DONTWAIT, 1, MT_DATA);
|
|
if (m_notify == NULL)
|
|
/* no space left */
|
|
return;
|
|
SCTP_BUF_LEN(m_notify) = 0;
|
|
len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t));
|
|
if (len > M_TRAILINGSPACE(m_notify)) {
|
|
/* never enough room */
|
|
sctp_m_freem(m_notify);
|
|
return;
|
|
}
|
|
strreset = mtod(m_notify, struct sctp_stream_reset_event *);
|
|
strreset->strreset_type = SCTP_STREAM_RESET_EVENT;
|
|
if (number_entries == 0) {
|
|
strreset->strreset_flags = flag | SCTP_STRRESET_ALL_STREAMS;
|
|
} else {
|
|
strreset->strreset_flags = flag | SCTP_STRRESET_STREAM_LIST;
|
|
}
|
|
strreset->strreset_length = len;
|
|
strreset->strreset_assoc_id = sctp_get_associd(stcb);
|
|
if (number_entries) {
|
|
int i;
|
|
|
|
for (i = 0; i < number_entries; i++) {
|
|
strreset->strreset_list[i] = ntohs(list[i]);
|
|
}
|
|
}
|
|
SCTP_BUF_LEN(m_notify) = len;
|
|
SCTP_BUF_NEXT(m_notify) = NULL;
|
|
if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
|
|
/* no space */
|
|
sctp_m_freem(m_notify);
|
|
return;
|
|
}
|
|
/* append to socket */
|
|
control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
|
|
0, 0, 0, 0, 0, 0,
|
|
m_notify);
|
|
if (control == NULL) {
|
|
/* no memory */
|
|
sctp_m_freem(m_notify);
|
|
return;
|
|
}
|
|
control->spec_flags = M_NOTIFICATION;
|
|
control->length = SCTP_BUF_LEN(m_notify);
|
|
/* not that we need this */
|
|
control->tail_mbuf = m_notify;
|
|
sctp_add_to_readq(stcb->sctp_ep, stcb,
|
|
control,
|
|
&stcb->sctp_socket->so_rcv, 1, SCTP_SO_NOT_LOCKED);
|
|
}
|
|
|
|
|
|
void
|
|
sctp_ulp_notify(uint32_t notification, struct sctp_tcb *stcb,
|
|
uint32_t error, void *data, int so_locked
|
|
#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
|
|
SCTP_UNUSED
|
|
#endif
|
|
)
|
|
{
|
|
if ((stcb == NULL) ||
|
|
(stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
|
|
(stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
|
|
(stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
|
|
/* If the socket is gone we are out of here */
|
|
return;
|
|
}
|
|
if (stcb->sctp_socket->so_rcv.sb_state & SBS_CANTRCVMORE) {
|
|
return;
|
|
}
|
|
if (stcb && ((stcb->asoc.state & SCTP_STATE_COOKIE_WAIT) ||
|
|
(stcb->asoc.state & SCTP_STATE_COOKIE_ECHOED))) {
|
|
if ((notification == SCTP_NOTIFY_INTERFACE_DOWN) ||
|
|
(notification == SCTP_NOTIFY_INTERFACE_UP) ||
|
|
(notification == SCTP_NOTIFY_INTERFACE_CONFIRMED)) {
|
|
/* Don't report these in front states */
|
|
return;
|
|
}
|
|
}
|
|
switch (notification) {
|
|
case SCTP_NOTIFY_ASSOC_UP:
|
|
if (stcb->asoc.assoc_up_sent == 0) {
|
|
sctp_notify_assoc_change(SCTP_COMM_UP, stcb, error, NULL, so_locked);
|
|
stcb->asoc.assoc_up_sent = 1;
|
|
}
|
|
if (stcb->asoc.adaptation_needed && (stcb->asoc.adaptation_sent == 0)) {
|
|
sctp_notify_adaptation_layer(stcb, error);
|
|
}
|
|
if (stcb->asoc.peer_supports_auth == 0) {
|
|
sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
|
|
NULL, so_locked);
|
|
}
|
|
break;
|
|
case SCTP_NOTIFY_ASSOC_DOWN:
|
|
sctp_notify_assoc_change(SCTP_SHUTDOWN_COMP, stcb, error, NULL, so_locked);
|
|
break;
|
|
case SCTP_NOTIFY_INTERFACE_DOWN:
|
|
{
|
|
struct sctp_nets *net;
|
|
|
|
net = (struct sctp_nets *)data;
|
|
sctp_notify_peer_addr_change(stcb, SCTP_ADDR_UNREACHABLE,
|
|
(struct sockaddr *)&net->ro._l_addr, error);
|
|
break;
|
|
}
|
|
case SCTP_NOTIFY_INTERFACE_UP:
|
|
{
|
|
struct sctp_nets *net;
|
|
|
|
net = (struct sctp_nets *)data;
|
|
sctp_notify_peer_addr_change(stcb, SCTP_ADDR_AVAILABLE,
|
|
(struct sockaddr *)&net->ro._l_addr, error);
|
|
break;
|
|
}
|
|
case SCTP_NOTIFY_INTERFACE_CONFIRMED:
|
|
{
|
|
struct sctp_nets *net;
|
|
|
|
net = (struct sctp_nets *)data;
|
|
sctp_notify_peer_addr_change(stcb, SCTP_ADDR_CONFIRMED,
|
|
(struct sockaddr *)&net->ro._l_addr, error);
|
|
break;
|
|
}
|
|
case SCTP_NOTIFY_SPECIAL_SP_FAIL:
|
|
sctp_notify_send_failed2(stcb, error,
|
|
(struct sctp_stream_queue_pending *)data, so_locked);
|
|
break;
|
|
case SCTP_NOTIFY_DG_FAIL:
|
|
sctp_notify_send_failed(stcb, error,
|
|
(struct sctp_tmit_chunk *)data, so_locked);
|
|
break;
|
|
case SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION:
|
|
{
|
|
uint32_t val;
|
|
|
|
val = *((uint32_t *) data);
|
|
|
|
sctp_notify_partial_delivery_indication(stcb, error, 0, val);
|
|
}
|
|
break;
|
|
case SCTP_NOTIFY_STRDATA_ERR:
|
|
break;
|
|
case SCTP_NOTIFY_ASSOC_ABORTED:
|
|
if ((stcb) && (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) ||
|
|
((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED))) {
|
|
sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, NULL, so_locked);
|
|
} else {
|
|
sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, NULL, so_locked);
|
|
}
|
|
break;
|
|
case SCTP_NOTIFY_PEER_OPENED_STREAM:
|
|
break;
|
|
case SCTP_NOTIFY_STREAM_OPENED_OK:
|
|
break;
|
|
case SCTP_NOTIFY_ASSOC_RESTART:
|
|
sctp_notify_assoc_change(SCTP_RESTART, stcb, error, data, so_locked);
|
|
if (stcb->asoc.peer_supports_auth == 0) {
|
|
sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
|
|
NULL, so_locked);
|
|
}
|
|
break;
|
|
case SCTP_NOTIFY_HB_RESP:
|
|
break;
|
|
case SCTP_NOTIFY_STR_RESET_INSTREAM_ADD_OK:
|
|
sctp_notify_stream_reset_add(stcb, error, SCTP_STRRESET_INBOUND_STR);
|
|
break;
|
|
case SCTP_NOTIFY_STR_RESET_ADD_OK:
|
|
sctp_notify_stream_reset_add(stcb, error, SCTP_STRRESET_OUTBOUND_STR);
|
|
break;
|
|
case SCTP_NOTIFY_STR_RESET_ADD_FAIL:
|
|
sctp_notify_stream_reset_add(stcb, error, (SCTP_STRRESET_FAILED | SCTP_STRRESET_OUTBOUND_STR));
|
|
break;
|
|
|
|
case SCTP_NOTIFY_STR_RESET_SEND:
|
|
sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STRRESET_OUTBOUND_STR);
|
|
break;
|
|
case SCTP_NOTIFY_STR_RESET_RECV:
|
|
sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STRRESET_INBOUND_STR);
|
|
break;
|
|
case SCTP_NOTIFY_STR_RESET_FAILED_OUT:
|
|
sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), (SCTP_STRRESET_OUTBOUND_STR | SCTP_STRRESET_FAILED));
|
|
break;
|
|
|
|
case SCTP_NOTIFY_STR_RESET_FAILED_IN:
|
|
sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), (SCTP_STRRESET_INBOUND_STR | SCTP_STRRESET_FAILED));
|
|
break;
|
|
|
|
case SCTP_NOTIFY_ASCONF_ADD_IP:
|
|
sctp_notify_peer_addr_change(stcb, SCTP_ADDR_ADDED, data,
|
|
error);
|
|
break;
|
|
case SCTP_NOTIFY_ASCONF_DELETE_IP:
|
|
sctp_notify_peer_addr_change(stcb, SCTP_ADDR_REMOVED, data,
|
|
error);
|
|
break;
|
|
case SCTP_NOTIFY_ASCONF_SET_PRIMARY:
|
|
sctp_notify_peer_addr_change(stcb, SCTP_ADDR_MADE_PRIM, data,
|
|
error);
|
|
break;
|
|
case SCTP_NOTIFY_ASCONF_SUCCESS:
|
|
break;
|
|
case SCTP_NOTIFY_ASCONF_FAILED:
|
|
break;
|
|
case SCTP_NOTIFY_PEER_SHUTDOWN:
|
|
sctp_notify_shutdown_event(stcb);
|
|
break;
|
|
case SCTP_NOTIFY_AUTH_NEW_KEY:
|
|
sctp_notify_authentication(stcb, SCTP_AUTH_NEWKEY, error,
|
|
(uint16_t) (uintptr_t) data,
|
|
so_locked);
|
|
break;
|
|
case SCTP_NOTIFY_AUTH_FREE_KEY:
|
|
sctp_notify_authentication(stcb, SCTP_AUTH_FREE_KEY, error,
|
|
(uint16_t) (uintptr_t) data,
|
|
so_locked);
|
|
break;
|
|
case SCTP_NOTIFY_NO_PEER_AUTH:
|
|
sctp_notify_authentication(stcb, SCTP_AUTH_NO_AUTH, error,
|
|
(uint16_t) (uintptr_t) data,
|
|
so_locked);
|
|
break;
|
|
case SCTP_NOTIFY_SENDER_DRY:
|
|
sctp_notify_sender_dry_event(stcb, so_locked);
|
|
break;
|
|
default:
|
|
SCTPDBG(SCTP_DEBUG_UTIL1, "%s: unknown notification %xh (%u)\n",
|
|
__FUNCTION__, notification, notification);
|
|
break;
|
|
} /* end switch */
|
|
}
|
|
|
|
void
|
|
sctp_report_all_outbound(struct sctp_tcb *stcb, int holds_lock, int so_locked
|
|
#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
|
|
SCTP_UNUSED
|
|
#endif
|
|
)
|
|
{
|
|
struct sctp_association *asoc;
|
|
struct sctp_stream_out *outs;
|
|
struct sctp_tmit_chunk *chk;
|
|
struct sctp_stream_queue_pending *sp;
|
|
int i;
|
|
|
|
asoc = &stcb->asoc;
|
|
|
|
if (stcb == NULL) {
|
|
return;
|
|
}
|
|
if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
|
|
(stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
|
|
(stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
|
|
return;
|
|
}
|
|
/* now through all the gunk freeing chunks */
|
|
if (holds_lock == 0) {
|
|
SCTP_TCB_SEND_LOCK(stcb);
|
|
}
|
|
/* sent queue SHOULD be empty */
|
|
if (!TAILQ_EMPTY(&asoc->sent_queue)) {
|
|
chk = TAILQ_FIRST(&asoc->sent_queue);
|
|
while (chk) {
|
|
TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
|
|
asoc->sent_queue_cnt--;
|
|
sctp_free_bufspace(stcb, asoc, chk, 1);
|
|
sctp_ulp_notify(SCTP_NOTIFY_DG_FAIL, stcb,
|
|
SCTP_NOTIFY_DATAGRAM_SENT, chk, so_locked);
|
|
if (chk->data) {
|
|
sctp_m_freem(chk->data);
|
|
chk->data = NULL;
|
|
}
|
|
sctp_free_a_chunk(stcb, chk);
|
|
/* sa_ignore FREED_MEMORY */
|
|
chk = TAILQ_FIRST(&asoc->sent_queue);
|
|
}
|
|
}
|
|
/* pending send queue SHOULD be empty */
|
|
if (!TAILQ_EMPTY(&asoc->send_queue)) {
|
|
chk = TAILQ_FIRST(&asoc->send_queue);
|
|
while (chk) {
|
|
TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
|
|
asoc->send_queue_cnt--;
|
|
sctp_free_bufspace(stcb, asoc, chk, 1);
|
|
sctp_ulp_notify(SCTP_NOTIFY_DG_FAIL, stcb, SCTP_NOTIFY_DATAGRAM_UNSENT, chk, so_locked);
|
|
if (chk->data) {
|
|
sctp_m_freem(chk->data);
|
|
chk->data = NULL;
|
|
}
|
|
sctp_free_a_chunk(stcb, chk);
|
|
/* sa_ignore FREED_MEMORY */
|
|
chk = TAILQ_FIRST(&asoc->send_queue);
|
|
}
|
|
}
|
|
for (i = 0; i < stcb->asoc.streamoutcnt; i++) {
|
|
/* For each stream */
|
|
outs = &stcb->asoc.strmout[i];
|
|
/* clean up any sends there */
|
|
stcb->asoc.locked_on_sending = NULL;
|
|
sp = TAILQ_FIRST(&outs->outqueue);
|
|
while (sp) {
|
|
stcb->asoc.stream_queue_cnt--;
|
|
TAILQ_REMOVE(&outs->outqueue, sp, next);
|
|
sctp_free_spbufspace(stcb, asoc, sp);
|
|
sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
|
|
SCTP_NOTIFY_DATAGRAM_UNSENT, (void *)sp, so_locked);
|
|
if (sp->data) {
|
|
sctp_m_freem(sp->data);
|
|
sp->data = NULL;
|
|
}
|
|
if (sp->net)
|
|
sctp_free_remote_addr(sp->net);
|
|
sp->net = NULL;
|
|
/* Free the chunk */
|
|
sctp_free_a_strmoq(stcb, sp);
|
|
/* sa_ignore FREED_MEMORY */
|
|
sp = TAILQ_FIRST(&outs->outqueue);
|
|
}
|
|
}
|
|
|
|
if (holds_lock == 0) {
|
|
SCTP_TCB_SEND_UNLOCK(stcb);
|
|
}
|
|
}
|
|
|
|
void
|
|
sctp_abort_notification(struct sctp_tcb *stcb, int error, int so_locked
|
|
#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
|
|
SCTP_UNUSED
|
|
#endif
|
|
)
|
|
{
|
|
|
|
if (stcb == NULL) {
|
|
return;
|
|
}
|
|
if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
|
|
(stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
|
|
(stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
|
|
return;
|
|
}
|
|
/* Tell them we lost the asoc */
|
|
sctp_report_all_outbound(stcb, 1, so_locked);
|
|
if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
|
|
((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
|
|
(stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
|
|
stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_WAS_ABORTED;
|
|
}
|
|
sctp_ulp_notify(SCTP_NOTIFY_ASSOC_ABORTED, stcb, error, NULL, so_locked);
|
|
}
|
|
|
|
void
|
|
sctp_abort_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
|
|
struct mbuf *m, int iphlen, struct sctphdr *sh, struct mbuf *op_err,
|
|
uint32_t vrf_id, uint16_t port)
|
|
{
|
|
uint32_t vtag;
|
|
|
|
#if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
|
|
struct socket *so;
|
|
|
|
#endif
|
|
|
|
vtag = 0;
|
|
if (stcb != NULL) {
|
|
/* We have a TCB to abort, send notification too */
|
|
vtag = stcb->asoc.peer_vtag;
|
|
sctp_abort_notification(stcb, 0, SCTP_SO_NOT_LOCKED);
|
|
/* get the assoc vrf id and table id */
|
|
vrf_id = stcb->asoc.vrf_id;
|
|
stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
|
|
}
|
|
sctp_send_abort(m, iphlen, sh, vtag, op_err, vrf_id, port);
|
|
if (stcb != NULL) {
|
|
/* Ok, now lets free it */
|
|
#if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
|
|
so = SCTP_INP_SO(inp);
|
|
atomic_add_int(&stcb->asoc.refcnt, 1);
|
|
SCTP_TCB_UNLOCK(stcb);
|
|
SCTP_SOCKET_LOCK(so, 1);
|
|
SCTP_TCB_LOCK(stcb);
|
|
atomic_subtract_int(&stcb->asoc.refcnt, 1);
|
|
#endif
|
|
(void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_4);
|
|
#if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
|
|
SCTP_SOCKET_UNLOCK(so, 1);
|
|
#endif
|
|
} else {
|
|
if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
|
|
if (LIST_FIRST(&inp->sctp_asoc_list) == NULL) {
|
|
sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
|
|
SCTP_CALLED_DIRECTLY_NOCMPSET);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef SCTP_ASOCLOG_OF_TSNS
|
|
void
|
|
sctp_print_out_track_log(struct sctp_tcb *stcb)
|
|
{
|
|
#ifdef NOSIY_PRINTS
|
|
int i;
|
|
|
|
SCTP_PRINTF("Last ep reason:%x\n", stcb->sctp_ep->last_abort_code);
|
|
SCTP_PRINTF("IN bound TSN log-aaa\n");
|
|
if ((stcb->asoc.tsn_in_at == 0) && (stcb->asoc.tsn_in_wrapped == 0)) {
|
|
SCTP_PRINTF("None rcvd\n");
|
|
goto none_in;
|
|
}
|
|
if (stcb->asoc.tsn_in_wrapped) {
|
|
for (i = stcb->asoc.tsn_in_at; i < SCTP_TSN_LOG_SIZE; i++) {
|
|
SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
|
|
stcb->asoc.in_tsnlog[i].tsn,
|
|
stcb->asoc.in_tsnlog[i].strm,
|
|
stcb->asoc.in_tsnlog[i].seq,
|
|
stcb->asoc.in_tsnlog[i].flgs,
|
|
stcb->asoc.in_tsnlog[i].sz);
|
|
}
|
|
}
|
|
if (stcb->asoc.tsn_in_at) {
|
|
for (i = 0; i < stcb->asoc.tsn_in_at; i++) {
|
|
SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
|
|
stcb->asoc.in_tsnlog[i].tsn,
|
|
stcb->asoc.in_tsnlog[i].strm,
|
|
stcb->asoc.in_tsnlog[i].seq,
|
|
stcb->asoc.in_tsnlog[i].flgs,
|
|
stcb->asoc.in_tsnlog[i].sz);
|
|
}
|
|
}
|
|
none_in:
|
|
SCTP_PRINTF("OUT bound TSN log-aaa\n");
|
|
if ((stcb->asoc.tsn_out_at == 0) &&
|
|
(stcb->asoc.tsn_out_wrapped == 0)) {
|
|
SCTP_PRINTF("None sent\n");
|
|
}
|
|
if (stcb->asoc.tsn_out_wrapped) {
|
|
for (i = stcb->asoc.tsn_out_at; i < SCTP_TSN_LOG_SIZE; i++) {
|
|
SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
|
|
stcb->asoc.out_tsnlog[i].tsn,
|
|
stcb->asoc.out_tsnlog[i].strm,
|
|
stcb->asoc.out_tsnlog[i].seq,
|
|
stcb->asoc.out_tsnlog[i].flgs,
|
|
stcb->asoc.out_tsnlog[i].sz);
|
|
}
|
|
}
|
|
if (stcb->asoc.tsn_out_at) {
|
|
for (i = 0; i < stcb->asoc.tsn_out_at; i++) {
|
|
SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
|
|
stcb->asoc.out_tsnlog[i].tsn,
|
|
stcb->asoc.out_tsnlog[i].strm,
|
|
stcb->asoc.out_tsnlog[i].seq,
|
|
stcb->asoc.out_tsnlog[i].flgs,
|
|
stcb->asoc.out_tsnlog[i].sz);
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
#endif
|
|
|
|
void
|
|
sctp_abort_an_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
|
|
int error, struct mbuf *op_err,
|
|
int so_locked
|
|
#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
|
|
SCTP_UNUSED
|
|
#endif
|
|
)
|
|
{
|
|
uint32_t vtag;
|
|
|
|
#if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
|
|
struct socket *so;
|
|
|
|
#endif
|
|
|
|
#if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
|
|
so = SCTP_INP_SO(inp);
|
|
#endif
|
|
if (stcb == NULL) {
|
|
/* Got to have a TCB */
|
|
if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
|
|
if (LIST_FIRST(&inp->sctp_asoc_list) == NULL) {
|
|
sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
|
|
SCTP_CALLED_DIRECTLY_NOCMPSET);
|
|
}
|
|
}
|
|
return;
|
|
} else {
|
|
stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
|
|
}
|
|
vtag = stcb->asoc.peer_vtag;
|
|
/* notify the ulp */
|
|
if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0)
|
|
sctp_abort_notification(stcb, error, so_locked);
|
|
/* notify the peer */
|
|
#if defined(SCTP_PANIC_ON_ABORT)
|
|
panic("aborting an association");
|
|
#endif
|
|
sctp_send_abort_tcb(stcb, op_err, so_locked);
|
|
SCTP_STAT_INCR_COUNTER32(sctps_aborted);
|
|
if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
|
|
(SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
|
|
SCTP_STAT_DECR_GAUGE32(sctps_currestab);
|
|
}
|
|
/* now free the asoc */
|
|
#ifdef SCTP_ASOCLOG_OF_TSNS
|
|
sctp_print_out_track_log(stcb);
|
|
#endif
|
|
#if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
|
|
if (!so_locked) {
|
|
atomic_add_int(&stcb->asoc.refcnt, 1);
|
|
SCTP_TCB_UNLOCK(stcb);
|
|
SCTP_SOCKET_LOCK(so, 1);
|
|
SCTP_TCB_LOCK(stcb);
|
|
atomic_subtract_int(&stcb->asoc.refcnt, 1);
|
|
}
|
|
#endif
|
|
(void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_5);
|
|
#if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
|
|
if (!so_locked) {
|
|
SCTP_SOCKET_UNLOCK(so, 1);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void
|
|
sctp_handle_ootb(struct mbuf *m, int iphlen, int offset, struct sctphdr *sh,
|
|
struct sctp_inpcb *inp, struct mbuf *op_err, uint32_t vrf_id, uint16_t port)
|
|
{
|
|
struct sctp_chunkhdr *ch, chunk_buf;
|
|
unsigned int chk_length;
|
|
|
|
SCTP_STAT_INCR_COUNTER32(sctps_outoftheblue);
|
|
/* Generate a TO address for future reference */
|
|
if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
|
|
if (LIST_FIRST(&inp->sctp_asoc_list) == NULL) {
|
|
sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
|
|
SCTP_CALLED_DIRECTLY_NOCMPSET);
|
|
}
|
|
}
|
|
ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
|
|
sizeof(*ch), (uint8_t *) & chunk_buf);
|
|
while (ch != NULL) {
|
|
chk_length = ntohs(ch->chunk_length);
|
|
if (chk_length < sizeof(*ch)) {
|
|
/* break to abort land */
|
|
break;
|
|
}
|
|
switch (ch->chunk_type) {
|
|
case SCTP_COOKIE_ECHO:
|
|
/* We hit here only if the assoc is being freed */
|
|
return;
|
|
case SCTP_PACKET_DROPPED:
|
|
/* we don't respond to pkt-dropped */
|
|
return;
|
|
case SCTP_ABORT_ASSOCIATION:
|
|
/* we don't respond with an ABORT to an ABORT */
|
|
return;
|
|
case SCTP_SHUTDOWN_COMPLETE:
|
|
/*
|
|
* we ignore it since we are not waiting for it and
|
|
* peer is gone
|
|
*/
|
|
return;
|
|
case SCTP_SHUTDOWN_ACK:
|
|
sctp_send_shutdown_complete2(m, iphlen, sh, vrf_id, port);
|
|
return;
|
|
default:
|
|
break;
|
|
}
|
|
offset += SCTP_SIZE32(chk_length);
|
|
ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
|
|
sizeof(*ch), (uint8_t *) & chunk_buf);
|
|
}
|
|
sctp_send_abort(m, iphlen, sh, 0, op_err, vrf_id, port);
|
|
}
|
|
|
|
/*
|
|
* check the inbound datagram to make sure there is not an abort inside it,
|
|
* if there is return 1, else return 0.
|
|
*/
|
|
int
|
|
sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, uint32_t * vtagfill)
|
|
{
|
|
struct sctp_chunkhdr *ch;
|
|
struct sctp_init_chunk *init_chk, chunk_buf;
|
|
int offset;
|
|
unsigned int chk_length;
|
|
|
|
offset = iphlen + sizeof(struct sctphdr);
|
|
ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch),
|
|
(uint8_t *) & chunk_buf);
|
|
while (ch != NULL) {
|
|
chk_length = ntohs(ch->chunk_length);
|
|
if (chk_length < sizeof(*ch)) {
|
|
/* packet is probably corrupt */
|
|
break;
|
|
}
|
|
/* we seem to be ok, is it an abort? */
|
|
if (ch->chunk_type == SCTP_ABORT_ASSOCIATION) {
|
|
/* yep, tell them */
|
|
return (1);
|
|
}
|
|
if (ch->chunk_type == SCTP_INITIATION) {
|
|
/* need to update the Vtag */
|
|
init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m,
|
|
offset, sizeof(*init_chk), (uint8_t *) & chunk_buf);
|
|
if (init_chk != NULL) {
|
|
*vtagfill = ntohl(init_chk->init.initiate_tag);
|
|
}
|
|
}
|
|
/* Nope, move to the next chunk */
|
|
offset += SCTP_SIZE32(chk_length);
|
|
ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
|
|
sizeof(*ch), (uint8_t *) & chunk_buf);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* currently (2/02), ifa_addr embeds scope_id's and don't have sin6_scope_id
|
|
* set (i.e. it's 0) so, create this function to compare link local scopes
|
|
*/
|
|
#ifdef INET6
|
|
uint32_t
|
|
sctp_is_same_scope(struct sockaddr_in6 *addr1, struct sockaddr_in6 *addr2)
|
|
{
|
|
struct sockaddr_in6 a, b;
|
|
|
|
/* save copies */
|
|
a = *addr1;
|
|
b = *addr2;
|
|
|
|
if (a.sin6_scope_id == 0)
|
|
if (sa6_recoverscope(&a)) {
|
|
/* can't get scope, so can't match */
|
|
return (0);
|
|
}
|
|
if (b.sin6_scope_id == 0)
|
|
if (sa6_recoverscope(&b)) {
|
|
/* can't get scope, so can't match */
|
|
return (0);
|
|
}
|
|
if (a.sin6_scope_id != b.sin6_scope_id)
|
|
return (0);
|
|
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* returns a sockaddr_in6 with embedded scope recovered and removed
|
|
*/
|
|
struct sockaddr_in6 *
|
|
sctp_recover_scope(struct sockaddr_in6 *addr, struct sockaddr_in6 *store)
|
|
{
|
|
/* check and strip embedded scope junk */
|
|
if (addr->sin6_family == AF_INET6) {
|
|
if (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr)) {
|
|
if (addr->sin6_scope_id == 0) {
|
|
*store = *addr;
|
|
if (!sa6_recoverscope(store)) {
|
|
/* use the recovered scope */
|
|
addr = store;
|
|
}
|
|
} else {
|
|
/* else, return the original "to" addr */
|
|
in6_clearscope(&addr->sin6_addr);
|
|
}
|
|
}
|
|
}
|
|
return (addr);
|
|
}
|
|
|
|
#endif
|
|
|
|
/*
|
|
* are the two addresses the same? currently a "scopeless" check returns: 1
|
|
* if same, 0 if not
|
|
*/
|
|
int
|
|
sctp_cmpaddr(struct sockaddr *sa1, struct sockaddr *sa2)
|
|
{
|
|
|
|
/* must be valid */
|
|
if (sa1 == NULL || sa2 == NULL)
|
|
return (0);
|
|
|
|
/* must be the same family */
|
|
if (sa1->sa_family != sa2->sa_family)
|
|
return (0);
|
|
|
|
switch (sa1->sa_family) {
|
|
#ifdef INET6
|
|
case AF_INET6:
|
|
{
|
|
/* IPv6 addresses */
|
|
struct sockaddr_in6 *sin6_1, *sin6_2;
|
|
|
|
sin6_1 = (struct sockaddr_in6 *)sa1;
|
|
sin6_2 = (struct sockaddr_in6 *)sa2;
|
|
return (SCTP6_ARE_ADDR_EQUAL(sin6_1,
|
|
sin6_2));
|
|
}
|
|
#endif
|
|
case AF_INET:
|
|
{
|
|
/* IPv4 addresses */
|
|
struct sockaddr_in *sin_1, *sin_2;
|
|
|
|
sin_1 = (struct sockaddr_in *)sa1;
|
|
sin_2 = (struct sockaddr_in *)sa2;
|
|
return (sin_1->sin_addr.s_addr == sin_2->sin_addr.s_addr);
|
|
}
|
|
default:
|
|
/* we don't do these... */
|
|
return (0);
|
|
}
|
|
}
|
|
|
|
void
|
|
sctp_print_address(struct sockaddr *sa)
|
|
{
|
|
#ifdef INET6
|
|
char ip6buf[INET6_ADDRSTRLEN];
|
|
|
|
ip6buf[0] = 0;
|
|
#endif
|
|
|
|
switch (sa->sa_family) {
|
|
#ifdef INET6
|
|
case AF_INET6:
|
|
{
|
|
struct sockaddr_in6 *sin6;
|
|
|
|
sin6 = (struct sockaddr_in6 *)sa;
|
|
SCTP_PRINTF("IPv6 address: %s:port:%d scope:%u\n",
|
|
ip6_sprintf(ip6buf, &sin6->sin6_addr),
|
|
ntohs(sin6->sin6_port),
|
|
sin6->sin6_scope_id);
|
|
break;
|
|
}
|
|
#endif
|
|
case AF_INET:
|
|
{
|
|
struct sockaddr_in *sin;
|
|
unsigned char *p;
|
|
|
|
sin = (struct sockaddr_in *)sa;
|
|
p = (unsigned char *)&sin->sin_addr;
|
|
SCTP_PRINTF("IPv4 address: %u.%u.%u.%u:%d\n",
|
|
p[0], p[1], p[2], p[3], ntohs(sin->sin_port));
|
|
break;
|
|
}
|
|
default:
|
|
SCTP_PRINTF("?\n");
|
|
break;
|
|
}
|
|
}
|
|
|
|
void
|
|
sctp_print_address_pkt(struct ip *iph, struct sctphdr *sh)
|
|
{
|
|
switch (iph->ip_v) {
|
|
case IPVERSION:
|
|
{
|
|
struct sockaddr_in lsa, fsa;
|
|
|
|
bzero(&lsa, sizeof(lsa));
|
|
lsa.sin_len = sizeof(lsa);
|
|
lsa.sin_family = AF_INET;
|
|
lsa.sin_addr = iph->ip_src;
|
|
lsa.sin_port = sh->src_port;
|
|
bzero(&fsa, sizeof(fsa));
|
|
fsa.sin_len = sizeof(fsa);
|
|
fsa.sin_family = AF_INET;
|
|
fsa.sin_addr = iph->ip_dst;
|
|
fsa.sin_port = sh->dest_port;
|
|
SCTP_PRINTF("src: ");
|
|
sctp_print_address((struct sockaddr *)&lsa);
|
|
SCTP_PRINTF("dest: ");
|
|
sctp_print_address((struct sockaddr *)&fsa);
|
|
break;
|
|
}
|
|
#ifdef INET6
|
|
case IPV6_VERSION >> 4:
|
|
{
|
|
struct ip6_hdr *ip6;
|
|
struct sockaddr_in6 lsa6, fsa6;
|
|
|
|
ip6 = (struct ip6_hdr *)iph;
|
|
bzero(&lsa6, sizeof(lsa6));
|
|
lsa6.sin6_len = sizeof(lsa6);
|
|
lsa6.sin6_family = AF_INET6;
|
|
lsa6.sin6_addr = ip6->ip6_src;
|
|
lsa6.sin6_port = sh->src_port;
|
|
bzero(&fsa6, sizeof(fsa6));
|
|
fsa6.sin6_len = sizeof(fsa6);
|
|
fsa6.sin6_family = AF_INET6;
|
|
fsa6.sin6_addr = ip6->ip6_dst;
|
|
fsa6.sin6_port = sh->dest_port;
|
|
SCTP_PRINTF("src: ");
|
|
sctp_print_address((struct sockaddr *)&lsa6);
|
|
SCTP_PRINTF("dest: ");
|
|
sctp_print_address((struct sockaddr *)&fsa6);
|
|
break;
|
|
}
|
|
#endif
|
|
default:
|
|
/* TSNH */
|
|
break;
|
|
}
|
|
}
|
|
|
|
void
|
|
sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp,
|
|
struct sctp_inpcb *new_inp,
|
|
struct sctp_tcb *stcb,
|
|
int waitflags)
|
|
{
|
|
/*
|
|
* go through our old INP and pull off any control structures that
|
|
* belong to stcb and move then to the new inp.
|
|
*/
|
|
struct socket *old_so, *new_so;
|
|
struct sctp_queued_to_read *control, *nctl;
|
|
struct sctp_readhead tmp_queue;
|
|
struct mbuf *m;
|
|
int error = 0;
|
|
|
|
old_so = old_inp->sctp_socket;
|
|
new_so = new_inp->sctp_socket;
|
|
TAILQ_INIT(&tmp_queue);
|
|
error = sblock(&old_so->so_rcv, waitflags);
|
|
if (error) {
|
|
/*
|
|
* Gak, can't get sblock, we have a problem. data will be
|
|
* left stranded.. and we don't dare look at it since the
|
|
* other thread may be reading something. Oh well, its a
|
|
* screwed up app that does a peeloff OR a accept while
|
|
* reading from the main socket... actually its only the
|
|
* peeloff() case, since I think read will fail on a
|
|
* listening socket..
|
|
*/
|
|
return;
|
|
}
|
|
/* lock the socket buffers */
|
|
SCTP_INP_READ_LOCK(old_inp);
|
|
control = TAILQ_FIRST(&old_inp->read_queue);
|
|
/* Pull off all for out target stcb */
|
|
while (control) {
|
|
nctl = TAILQ_NEXT(control, next);
|
|
if (control->stcb == stcb) {
|
|
/* remove it we want it */
|
|
TAILQ_REMOVE(&old_inp->read_queue, control, next);
|
|
TAILQ_INSERT_TAIL(&tmp_queue, control, next);
|
|
m = control->data;
|
|
while (m) {
|
|
if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
|
|
sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
|
|
}
|
|
sctp_sbfree(control, stcb, &old_so->so_rcv, m);
|
|
if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
|
|
sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
|
|
}
|
|
m = SCTP_BUF_NEXT(m);
|
|
}
|
|
}
|
|
control = nctl;
|
|
}
|
|
SCTP_INP_READ_UNLOCK(old_inp);
|
|
/* Remove the sb-lock on the old socket */
|
|
|
|
sbunlock(&old_so->so_rcv);
|
|
/* Now we move them over to the new socket buffer */
|
|
control = TAILQ_FIRST(&tmp_queue);
|
|
SCTP_INP_READ_LOCK(new_inp);
|
|
while (control) {
|
|
nctl = TAILQ_NEXT(control, next);
|
|
TAILQ_INSERT_TAIL(&new_inp->read_queue, control, next);
|
|
m = control->data;
|
|
while (m) {
|
|
if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
|
|
sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
|
|
}
|
|
sctp_sballoc(stcb, &new_so->so_rcv, m);
|
|
if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
|
|
sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
|
|
}
|
|
m = SCTP_BUF_NEXT(m);
|
|
}
|
|
control = nctl;
|
|
}
|
|
SCTP_INP_READ_UNLOCK(new_inp);
|
|
}
|
|
|
|
void
|
|
sctp_add_to_readq(struct sctp_inpcb *inp,
|
|
struct sctp_tcb *stcb,
|
|
struct sctp_queued_to_read *control,
|
|
struct sockbuf *sb,
|
|
int end,
|
|
int so_locked
|
|
#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
|
|
SCTP_UNUSED
|
|
#endif
|
|
)
|
|
{
|
|
/*
|
|
* Here we must place the control on the end of the socket read
|
|
* queue AND increment sb_cc so that select will work properly on
|
|
* read.
|
|
*/
|
|
struct mbuf *m, *prev = NULL;
|
|
|
|
if (inp == NULL) {
|
|
/* Gak, TSNH!! */
|
|
#ifdef INVARIANTS
|
|
panic("Gak, inp NULL on add_to_readq");
|
|
#endif
|
|
return;
|
|
}
|
|
SCTP_INP_READ_LOCK(inp);
|
|
if (!(control->spec_flags & M_NOTIFICATION)) {
|
|
atomic_add_int(&inp->total_recvs, 1);
|
|
if (!control->do_not_ref_stcb) {
|
|
atomic_add_int(&stcb->total_recvs, 1);
|
|
}
|
|
}
|
|
m = control->data;
|
|
control->held_length = 0;
|
|
control->length = 0;
|
|
while (m) {
|
|
if (SCTP_BUF_LEN(m) == 0) {
|
|
/* Skip mbufs with NO length */
|
|
if (prev == NULL) {
|
|
/* First one */
|
|
control->data = sctp_m_free(m);
|
|
m = control->data;
|
|
} else {
|
|
SCTP_BUF_NEXT(prev) = sctp_m_free(m);
|
|
m = SCTP_BUF_NEXT(prev);
|
|
}
|
|
if (m == NULL) {
|
|
control->tail_mbuf = prev;;
|
|
}
|
|
continue;
|
|
}
|
|
prev = m;
|
|
if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
|
|
sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
|
|
}
|
|
sctp_sballoc(stcb, sb, m);
|
|
if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
|
|
sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
|
|
}
|
|
atomic_add_int(&control->length, SCTP_BUF_LEN(m));
|
|
m = SCTP_BUF_NEXT(m);
|
|
}
|
|
if (prev != NULL) {
|
|
control->tail_mbuf = prev;
|
|
} else {
|
|
/* Everything got collapsed out?? */
|
|
return;
|
|
}
|
|
if (end) {
|
|
control->end_added = 1;
|
|
}
|
|
TAILQ_INSERT_TAIL(&inp->read_queue, control, next);
|
|
SCTP_INP_READ_UNLOCK(inp);
|
|
if (inp && inp->sctp_socket) {
|
|
if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
|
|
SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
|
|
} else {
|
|
#if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
|
|
struct socket *so;
|
|
|
|
so = SCTP_INP_SO(inp);
|
|
if (!so_locked) {
|
|
atomic_add_int(&stcb->asoc.refcnt, 1);
|
|
SCTP_TCB_UNLOCK(stcb);
|
|
SCTP_SOCKET_LOCK(so, 1);
|
|
SCTP_TCB_LOCK(stcb);
|
|
atomic_subtract_int(&stcb->asoc.refcnt, 1);
|
|
if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
|
|
SCTP_SOCKET_UNLOCK(so, 1);
|
|
return;
|
|
}
|
|
}
|
|
#endif
|
|
sctp_sorwakeup(inp, inp->sctp_socket);
|
|
#if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
|
|
if (!so_locked) {
|
|
SCTP_SOCKET_UNLOCK(so, 1);
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
int
|
|
sctp_append_to_readq(struct sctp_inpcb *inp,
|
|
struct sctp_tcb *stcb,
|
|
struct sctp_queued_to_read *control,
|
|
struct mbuf *m,
|
|
int end,
|
|
int ctls_cumack,
|
|
struct sockbuf *sb)
|
|
{
|
|
/*
|
|
* A partial delivery API event is underway. OR we are appending on
|
|
* the reassembly queue.
|
|
*
|
|
* If PDAPI this means we need to add m to the end of the data.
|
|
* Increase the length in the control AND increment the sb_cc.
|
|
* Otherwise sb is NULL and all we need to do is put it at the end
|
|
* of the mbuf chain.
|
|
*/
|
|
int len = 0;
|
|
struct mbuf *mm, *tail = NULL, *prev = NULL;
|
|
|
|
if (inp) {
|
|
SCTP_INP_READ_LOCK(inp);
|
|
}
|
|
if (control == NULL) {
|
|
get_out:
|
|
if (inp) {
|
|
SCTP_INP_READ_UNLOCK(inp);
|
|
}
|
|
return (-1);
|
|
}
|
|
if (control->end_added) {
|
|
/* huh this one is complete? */
|
|
goto get_out;
|
|
}
|
|
mm = m;
|
|
if (mm == NULL) {
|
|
goto get_out;
|
|
}
|
|
while (mm) {
|
|
if (SCTP_BUF_LEN(mm) == 0) {
|
|
/* Skip mbufs with NO lenght */
|
|
if (prev == NULL) {
|
|
/* First one */
|
|
m = sctp_m_free(mm);
|
|
mm = m;
|
|
} else {
|
|
SCTP_BUF_NEXT(prev) = sctp_m_free(mm);
|
|
mm = SCTP_BUF_NEXT(prev);
|
|
}
|
|
continue;
|
|
}
|
|
prev = mm;
|
|
len += SCTP_BUF_LEN(mm);
|
|
if (sb) {
|
|
if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
|
|
sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(mm));
|
|
}
|
|
sctp_sballoc(stcb, sb, mm);
|
|
if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
|
|
sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
|
|
}
|
|
}
|
|
mm = SCTP_BUF_NEXT(mm);
|
|
}
|
|
if (prev) {
|
|
tail = prev;
|
|
} else {
|
|
/* Really there should always be a prev */
|
|
if (m == NULL) {
|
|
/* Huh nothing left? */
|
|
#ifdef INVARIANTS
|
|
panic("Nothing left to add?");
|
|
#else
|
|
goto get_out;
|
|
#endif
|
|
}
|
|
tail = m;
|
|
}
|
|
if (control->tail_mbuf) {
|
|
/* append */
|
|
SCTP_BUF_NEXT(control->tail_mbuf) = m;
|
|
control->tail_mbuf = tail;
|
|
} else {
|
|
/* nothing there */
|
|
#ifdef INVARIANTS
|
|
if (control->data != NULL) {
|
|
panic("This should NOT happen");
|
|
}
|
|
#endif
|
|
control->data = m;
|
|
control->tail_mbuf = tail;
|
|
}
|
|
atomic_add_int(&control->length, len);
|
|
if (end) {
|
|
/* message is complete */
|
|
if (stcb && (control == stcb->asoc.control_pdapi)) {
|
|
stcb->asoc.control_pdapi = NULL;
|
|
}
|
|
control->held_length = 0;
|
|
control->end_added = 1;
|
|
}
|
|
if (stcb == NULL) {
|
|
control->do_not_ref_stcb = 1;
|
|
}
|
|
/*
|
|
* When we are appending in partial delivery, the cum-ack is used
|
|
* for the actual pd-api highest tsn on this mbuf. The true cum-ack
|
|
* is populated in the outbound sinfo structure from the true cumack
|
|
* if the association exists...
|
|
*/
|
|
control->sinfo_tsn = control->sinfo_cumtsn = ctls_cumack;
|
|
if (inp) {
|
|
SCTP_INP_READ_UNLOCK(inp);
|
|
}
|
|
if (inp && inp->sctp_socket) {
|
|
if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
|
|
SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
|
|
} else {
|
|
#if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
|
|
struct socket *so;
|
|
|
|
so = SCTP_INP_SO(inp);
|
|
atomic_add_int(&stcb->asoc.refcnt, 1);
|
|
SCTP_TCB_UNLOCK(stcb);
|
|
SCTP_SOCKET_LOCK(so, 1);
|
|
SCTP_TCB_LOCK(stcb);
|
|
atomic_subtract_int(&stcb->asoc.refcnt, 1);
|
|
if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
|
|
SCTP_SOCKET_UNLOCK(so, 1);
|
|
return (0);
|
|
}
|
|
#endif
|
|
sctp_sorwakeup(inp, inp->sctp_socket);
|
|
#if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
|
|
SCTP_SOCKET_UNLOCK(so, 1);
|
|
#endif
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
|
|
|
|
/*************HOLD THIS COMMENT FOR PATCH FILE OF
|
|
*************ALTERNATE ROUTING CODE
|
|
*/
|
|
|
|
/*************HOLD THIS COMMENT FOR END OF PATCH FILE OF
|
|
*************ALTERNATE ROUTING CODE
|
|
*/
|
|
|
|
struct mbuf *
|
|
sctp_generate_invmanparam(int err)
|
|
{
|
|
/* Return a MBUF with a invalid mandatory parameter */
|
|
struct mbuf *m;
|
|
|
|
m = sctp_get_mbuf_for_msg(sizeof(struct sctp_paramhdr), 0, M_DONTWAIT, 1, MT_DATA);
|
|
if (m) {
|
|
struct sctp_paramhdr *ph;
|
|
|
|
SCTP_BUF_LEN(m) = sizeof(struct sctp_paramhdr);
|
|
ph = mtod(m, struct sctp_paramhdr *);
|
|
ph->param_length = htons(sizeof(struct sctp_paramhdr));
|
|
ph->param_type = htons(err);
|
|
}
|
|
return (m);
|
|
}
|
|
|
|
#ifdef SCTP_MBCNT_LOGGING
|
|
void
|
|
sctp_free_bufspace(struct sctp_tcb *stcb, struct sctp_association *asoc,
|
|
struct sctp_tmit_chunk *tp1, int chk_cnt)
|
|
{
|
|
if (tp1->data == NULL) {
|
|
return;
|
|
}
|
|
asoc->chunks_on_out_queue -= chk_cnt;
|
|
if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBCNT_LOGGING_ENABLE) {
|
|
sctp_log_mbcnt(SCTP_LOG_MBCNT_DECREASE,
|
|
asoc->total_output_queue_size,
|
|
tp1->book_size,
|
|
0,
|
|
tp1->mbcnt);
|
|
}
|
|
if (asoc->total_output_queue_size >= tp1->book_size) {
|
|
atomic_add_int(&asoc->total_output_queue_size, -tp1->book_size);
|
|
} else {
|
|
asoc->total_output_queue_size = 0;
|
|
}
|
|
|
|
if (stcb->sctp_socket && (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) ||
|
|
((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)))) {
|
|
if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) {
|
|
stcb->sctp_socket->so_snd.sb_cc -= tp1->book_size;
|
|
} else {
|
|
stcb->sctp_socket->so_snd.sb_cc = 0;
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|
|
int
|
|
sctp_release_pr_sctp_chunk(struct sctp_tcb *stcb, struct sctp_tmit_chunk *tp1,
|
|
int reason, struct sctpchunk_listhead *queue, int so_locked
|
|
#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
|
|
SCTP_UNUSED
|
|
#endif
|
|
)
|
|
{
|
|
int ret_sz = 0;
|
|
int notdone;
|
|
uint8_t foundeom = 0;
|
|
|
|
do {
|
|
ret_sz += tp1->book_size;
|
|
tp1->sent = SCTP_FORWARD_TSN_SKIP;
|
|
if (tp1->data) {
|
|
#if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
|
|
struct socket *so;
|
|
|
|
#endif
|
|
sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
|
|
sctp_flight_size_decrease(tp1);
|
|
sctp_total_flight_decrease(stcb, tp1);
|
|
sctp_ulp_notify(SCTP_NOTIFY_DG_FAIL, stcb, reason, tp1, so_locked);
|
|
sctp_m_freem(tp1->data);
|
|
tp1->data = NULL;
|
|
#if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
|
|
so = SCTP_INP_SO(stcb->sctp_ep);
|
|
if (!so_locked) {
|
|
atomic_add_int(&stcb->asoc.refcnt, 1);
|
|
SCTP_TCB_UNLOCK(stcb);
|
|
SCTP_SOCKET_LOCK(so, 1);
|
|
SCTP_TCB_LOCK(stcb);
|
|
atomic_subtract_int(&stcb->asoc.refcnt, 1);
|
|
if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
|
|
/*
|
|
* assoc was freed while we were
|
|
* unlocked
|
|
*/
|
|
SCTP_SOCKET_UNLOCK(so, 1);
|
|
return (ret_sz);
|
|
}
|
|
}
|
|
#endif
|
|
sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket);
|
|
#if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
|
|
if (!so_locked) {
|
|
SCTP_SOCKET_UNLOCK(so, 1);
|
|
}
|
|
#endif
|
|
}
|
|
if (PR_SCTP_BUF_ENABLED(tp1->flags)) {
|
|
stcb->asoc.sent_queue_cnt_removeable--;
|
|
}
|
|
if (queue == &stcb->asoc.send_queue) {
|
|
TAILQ_REMOVE(&stcb->asoc.send_queue, tp1, sctp_next);
|
|
/* on to the sent queue */
|
|
TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, tp1,
|
|
sctp_next);
|
|
stcb->asoc.sent_queue_cnt++;
|
|
}
|
|
if ((tp1->rec.data.rcv_flags & SCTP_DATA_NOT_FRAG) ==
|
|
SCTP_DATA_NOT_FRAG) {
|
|
/* not frag'ed we ae done */
|
|
notdone = 0;
|
|
foundeom = 1;
|
|
} else if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
|
|
/* end of frag, we are done */
|
|
notdone = 0;
|
|
foundeom = 1;
|
|
} else {
|
|
/*
|
|
* Its a begin or middle piece, we must mark all of
|
|
* it
|
|
*/
|
|
notdone = 1;
|
|
tp1 = TAILQ_NEXT(tp1, sctp_next);
|
|
}
|
|
} while (tp1 && notdone);
|
|
if ((foundeom == 0) && (queue == &stcb->asoc.sent_queue)) {
|
|
/*
|
|
* The multi-part message was scattered across the send and
|
|
* sent queue.
|
|
*/
|
|
tp1 = TAILQ_FIRST(&stcb->asoc.send_queue);
|
|
/*
|
|
* recurse throught the send_queue too, starting at the
|
|
* beginning.
|
|
*/
|
|
if (tp1) {
|
|
ret_sz += sctp_release_pr_sctp_chunk(stcb, tp1, reason,
|
|
&stcb->asoc.send_queue, so_locked);
|
|
} else {
|
|
SCTP_PRINTF("hmm, nothing on the send queue and no EOM?\n");
|
|
}
|
|
}
|
|
return (ret_sz);
|
|
}
|
|
|
|
/*
|
|
* checks to see if the given address, sa, is one that is currently known by
|
|
* the kernel note: can't distinguish the same address on multiple interfaces
|
|
* and doesn't handle multiple addresses with different zone/scope id's note:
|
|
* ifa_ifwithaddr() compares the entire sockaddr struct
|
|
*/
|
|
struct sctp_ifa *
|
|
sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr,
|
|
int holds_lock)
|
|
{
|
|
struct sctp_laddr *laddr;
|
|
|
|
if (holds_lock == 0) {
|
|
SCTP_INP_RLOCK(inp);
|
|
}
|
|
LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
|
|
if (laddr->ifa == NULL)
|
|
continue;
|
|
if (addr->sa_family != laddr->ifa->address.sa.sa_family)
|
|
continue;
|
|
if (addr->sa_family == AF_INET) {
|
|
if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
|
|
laddr->ifa->address.sin.sin_addr.s_addr) {
|
|
/* found him. */
|
|
if (holds_lock == 0) {
|
|
SCTP_INP_RUNLOCK(inp);
|
|
}
|
|
return (laddr->ifa);
|
|
break;
|
|
}
|
|
}
|
|
#ifdef INET6
|
|
if (addr->sa_family == AF_INET6) {
|
|
if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
|
|
&laddr->ifa->address.sin6)) {
|
|
/* found him. */
|
|
if (holds_lock == 0) {
|
|
SCTP_INP_RUNLOCK(inp);
|
|
}
|
|
return (laddr->ifa);
|
|
break;
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
if (holds_lock == 0) {
|
|
SCTP_INP_RUNLOCK(inp);
|
|
}
|
|
return (NULL);
|
|
}
|
|
|
|
uint32_t
|
|
sctp_get_ifa_hash_val(struct sockaddr *addr)
|
|
{
|
|
if (addr->sa_family == AF_INET) {
|
|
struct sockaddr_in *sin;
|
|
|
|
sin = (struct sockaddr_in *)addr;
|
|
return (sin->sin_addr.s_addr ^ (sin->sin_addr.s_addr >> 16));
|
|
} else if (addr->sa_family == AF_INET6) {
|
|
struct sockaddr_in6 *sin6;
|
|
uint32_t hash_of_addr;
|
|
|
|
sin6 = (struct sockaddr_in6 *)addr;
|
|
hash_of_addr = (sin6->sin6_addr.s6_addr32[0] +
|
|
sin6->sin6_addr.s6_addr32[1] +
|
|
sin6->sin6_addr.s6_addr32[2] +
|
|
sin6->sin6_addr.s6_addr32[3]);
|
|
hash_of_addr = (hash_of_addr ^ (hash_of_addr >> 16));
|
|
return (hash_of_addr);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
struct sctp_ifa *
|
|
sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock)
|
|
{
|
|
struct sctp_ifa *sctp_ifap;
|
|
struct sctp_vrf *vrf;
|
|
struct sctp_ifalist *hash_head;
|
|
uint32_t hash_of_addr;
|
|
|
|
if (holds_lock == 0)
|
|
SCTP_IPI_ADDR_RLOCK();
|
|
|
|
vrf = sctp_find_vrf(vrf_id);
|
|
if (vrf == NULL) {
|
|
stage_right:
|
|
if (holds_lock == 0)
|
|
SCTP_IPI_ADDR_RUNLOCK();
|
|
return (NULL);
|
|
}
|
|
hash_of_addr = sctp_get_ifa_hash_val(addr);
|
|
|
|
hash_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
|
|
if (hash_head == NULL) {
|
|
SCTP_PRINTF("hash_of_addr:%x mask:%x table:%x - ",
|
|
hash_of_addr, (uint32_t) vrf->vrf_addr_hashmark,
|
|
(uint32_t) (hash_of_addr & vrf->vrf_addr_hashmark));
|
|
sctp_print_address(addr);
|
|
SCTP_PRINTF("No such bucket for address\n");
|
|
if (holds_lock == 0)
|
|
SCTP_IPI_ADDR_RUNLOCK();
|
|
|
|
return (NULL);
|
|
}
|
|
LIST_FOREACH(sctp_ifap, hash_head, next_bucket) {
|
|
if (sctp_ifap == NULL) {
|
|
#ifdef INVARIANTS
|
|
panic("Huh LIST_FOREACH corrupt");
|
|
goto stage_right;
|
|
#else
|
|
SCTP_PRINTF("LIST corrupt of sctp_ifap's?\n");
|
|
goto stage_right;
|
|
#endif
|
|
}
|
|
if (addr->sa_family != sctp_ifap->address.sa.sa_family)
|
|
continue;
|
|
if (addr->sa_family == AF_INET) {
|
|
if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
|
|
sctp_ifap->address.sin.sin_addr.s_addr) {
|
|
/* found him. */
|
|
if (holds_lock == 0)
|
|
SCTP_IPI_ADDR_RUNLOCK();
|
|
return (sctp_ifap);
|
|
break;
|
|
}
|
|
}
|
|
#ifdef INET6
|
|
if (addr->sa_family == AF_INET6) {
|
|
if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
|
|
&sctp_ifap->address.sin6)) {
|
|
/* found him. */
|
|
if (holds_lock == 0)
|
|
SCTP_IPI_ADDR_RUNLOCK();
|
|
return (sctp_ifap);
|
|
break;
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
if (holds_lock == 0)
|
|
SCTP_IPI_ADDR_RUNLOCK();
|
|
return (NULL);
|
|
}
|
|
|
|
static void
|
|
sctp_user_rcvd(struct sctp_tcb *stcb, uint32_t * freed_so_far, int hold_rlock,
|
|
uint32_t rwnd_req)
|
|
{
|
|
/* User pulled some data, do we need a rwnd update? */
|
|
int r_unlocked = 0;
|
|
uint32_t dif, rwnd;
|
|
struct socket *so = NULL;
|
|
|
|
if (stcb == NULL)
|
|
return;
|
|
|
|
atomic_add_int(&stcb->asoc.refcnt, 1);
|
|
|
|
if (stcb->asoc.state & (SCTP_STATE_ABOUT_TO_BE_FREED |
|
|
SCTP_STATE_SHUTDOWN_RECEIVED |
|
|
SCTP_STATE_SHUTDOWN_ACK_SENT)) {
|
|
/* Pre-check If we are freeing no update */
|
|
goto no_lock;
|
|
}
|
|
SCTP_INP_INCR_REF(stcb->sctp_ep);
|
|
if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
|
|
(stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
|
|
goto out;
|
|
}
|
|
so = stcb->sctp_socket;
|
|
if (so == NULL) {
|
|
goto out;
|
|
}
|
|
atomic_add_int(&stcb->freed_by_sorcv_sincelast, *freed_so_far);
|
|
/* Have you have freed enough to look */
|
|
*freed_so_far = 0;
|
|
/* Yep, its worth a look and the lock overhead */
|
|
|
|
/* Figure out what the rwnd would be */
|
|
rwnd = sctp_calc_rwnd(stcb, &stcb->asoc);
|
|
if (rwnd >= stcb->asoc.my_last_reported_rwnd) {
|
|
dif = rwnd - stcb->asoc.my_last_reported_rwnd;
|
|
} else {
|
|
dif = 0;
|
|
}
|
|
if (dif >= rwnd_req) {
|
|
if (hold_rlock) {
|
|
SCTP_INP_READ_UNLOCK(stcb->sctp_ep);
|
|
r_unlocked = 1;
|
|
}
|
|
if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
|
|
/*
|
|
* One last check before we allow the guy possibly
|
|
* to get in. There is a race, where the guy has not
|
|
* reached the gate. In that case
|
|
*/
|
|
goto out;
|
|
}
|
|
SCTP_TCB_LOCK(stcb);
|
|
if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
|
|
/* No reports here */
|
|
SCTP_TCB_UNLOCK(stcb);
|
|
goto out;
|
|
}
|
|
SCTP_STAT_INCR(sctps_wu_sacks_sent);
|
|
/*
|
|
* EY if nr_sacks used then send an nr-sack , a sack
|
|
* otherwise
|
|
*/
|
|
if (SCTP_BASE_SYSCTL(sctp_nr_sack_on_off) && stcb->asoc.peer_supports_nr_sack)
|
|
sctp_send_nr_sack(stcb);
|
|
else
|
|
sctp_send_sack(stcb);
|
|
|
|
sctp_chunk_output(stcb->sctp_ep, stcb,
|
|
SCTP_OUTPUT_FROM_USR_RCVD, SCTP_SO_LOCKED);
|
|
/* make sure no timer is running */
|
|
sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL, SCTP_FROM_SCTPUTIL + SCTP_LOC_6);
|
|
SCTP_TCB_UNLOCK(stcb);
|
|
} else {
|
|
/* Update how much we have pending */
|
|
stcb->freed_by_sorcv_sincelast = dif;
|
|
}
|
|
out:
|
|
if (so && r_unlocked && hold_rlock) {
|
|
SCTP_INP_READ_LOCK(stcb->sctp_ep);
|
|
}
|
|
SCTP_INP_DECR_REF(stcb->sctp_ep);
|
|
no_lock:
|
|
atomic_add_int(&stcb->asoc.refcnt, -1);
|
|
return;
|
|
}
|
|
|
|
int
|
|
sctp_sorecvmsg(struct socket *so,
|
|
struct uio *uio,
|
|
struct mbuf **mp,
|
|
struct sockaddr *from,
|
|
int fromlen,
|
|
int *msg_flags,
|
|
struct sctp_sndrcvinfo *sinfo,
|
|
int filling_sinfo)
|
|
{
|
|
/*
|
|
* MSG flags we will look at MSG_DONTWAIT - non-blocking IO.
|
|
* MSG_PEEK - Look don't touch :-D (only valid with OUT mbuf copy
|
|
* mp=NULL thus uio is the copy method to userland) MSG_WAITALL - ??
|
|
* On the way out we may send out any combination of:
|
|
* MSG_NOTIFICATION MSG_EOR
|
|
*
|
|
*/
|
|
struct sctp_inpcb *inp = NULL;
|
|
int my_len = 0;
|
|
int cp_len = 0, error = 0;
|
|
struct sctp_queued_to_read *control = NULL, *ctl = NULL, *nxt = NULL;
|
|
struct mbuf *m = NULL, *embuf = NULL;
|
|
struct sctp_tcb *stcb = NULL;
|
|
int wakeup_read_socket = 0;
|
|
int freecnt_applied = 0;
|
|
int out_flags = 0, in_flags = 0;
|
|
int block_allowed = 1;
|
|
uint32_t freed_so_far = 0;
|
|
uint32_t copied_so_far = 0;
|
|
int in_eeor_mode = 0;
|
|
int no_rcv_needed = 0;
|
|
uint32_t rwnd_req = 0;
|
|
int hold_sblock = 0;
|
|
int hold_rlock = 0;
|
|
int slen = 0;
|
|
uint32_t held_length = 0;
|
|
int sockbuf_lock = 0;
|
|
|
|
if (uio == NULL) {
|
|
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
|
|
return (EINVAL);
|
|
}
|
|
if (msg_flags) {
|
|
in_flags = *msg_flags;
|
|
if (in_flags & MSG_PEEK)
|
|
SCTP_STAT_INCR(sctps_read_peeks);
|
|
} else {
|
|
in_flags = 0;
|
|
}
|
|
slen = uio->uio_resid;
|
|
|
|
/* Pull in and set up our int flags */
|
|
if (in_flags & MSG_OOB) {
|
|
/* Out of band's NOT supported */
|
|
return (EOPNOTSUPP);
|
|
}
|
|
if ((in_flags & MSG_PEEK) && (mp != NULL)) {
|
|
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
|
|
return (EINVAL);
|
|
}
|
|
if ((in_flags & (MSG_DONTWAIT
|
|
| MSG_NBIO
|
|
)) ||
|
|
SCTP_SO_IS_NBIO(so)) {
|
|
block_allowed = 0;
|
|
}
|
|
/* setup the endpoint */
|
|
inp = (struct sctp_inpcb *)so->so_pcb;
|
|
if (inp == NULL) {
|
|
SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT);
|
|
return (EFAULT);
|
|
}
|
|
rwnd_req = (SCTP_SB_LIMIT_RCV(so) >> SCTP_RWND_HIWAT_SHIFT);
|
|
/* Must be at least a MTU's worth */
|
|
if (rwnd_req < SCTP_MIN_RWND)
|
|
rwnd_req = SCTP_MIN_RWND;
|
|
in_eeor_mode = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
|
|
if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
|
|
sctp_misc_ints(SCTP_SORECV_ENTER,
|
|
rwnd_req, in_eeor_mode, so->so_rcv.sb_cc, uio->uio_resid);
|
|
}
|
|
if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
|
|
sctp_misc_ints(SCTP_SORECV_ENTERPL,
|
|
rwnd_req, block_allowed, so->so_rcv.sb_cc, uio->uio_resid);
|
|
}
|
|
error = sblock(&so->so_rcv, (block_allowed ? SBL_WAIT : 0));
|
|
sockbuf_lock = 1;
|
|
if (error) {
|
|
goto release_unlocked;
|
|
}
|
|
restart:
|
|
|
|
|
|
restart_nosblocks:
|
|
if (hold_sblock == 0) {
|
|
SOCKBUF_LOCK(&so->so_rcv);
|
|
hold_sblock = 1;
|
|
}
|
|
if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
|
|
(inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
|
|
goto out;
|
|
}
|
|
if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {
|
|
if (so->so_error) {
|
|
error = so->so_error;
|
|
if ((in_flags & MSG_PEEK) == 0)
|
|
so->so_error = 0;
|
|
goto out;
|
|
} else {
|
|
if (so->so_rcv.sb_cc == 0) {
|
|
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
|
|
/* indicate EOF */
|
|
error = 0;
|
|
goto out;
|
|
}
|
|
}
|
|
}
|
|
if ((so->so_rcv.sb_cc <= held_length) && block_allowed) {
|
|
/* we need to wait for data */
|
|
if ((so->so_rcv.sb_cc == 0) &&
|
|
((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
|
|
(inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) {
|
|
if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
|
|
/*
|
|
* For active open side clear flags for
|
|
* re-use passive open is blocked by
|
|
* connect.
|
|
*/
|
|
if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
|
|
/*
|
|
* You were aborted, passive side
|
|
* always hits here
|
|
*/
|
|
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
|
|
error = ECONNRESET;
|
|
/*
|
|
* You get this once if you are
|
|
* active open side
|
|
*/
|
|
if (!(inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
|
|
/*
|
|
* Remove flag if on the
|
|
* active open side
|
|
*/
|
|
inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAS_ABORTED;
|
|
}
|
|
}
|
|
so->so_state &= ~(SS_ISCONNECTING |
|
|
SS_ISDISCONNECTING |
|
|
SS_ISCONFIRMING |
|
|
SS_ISCONNECTED);
|
|
if (error == 0) {
|
|
if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
|
|
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
|
|
error = ENOTCONN;
|
|
} else {
|
|
inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAS_CONNECTED;
|
|
}
|
|
}
|
|
goto out;
|
|
}
|
|
}
|
|
error = sbwait(&so->so_rcv);
|
|
if (error) {
|
|
goto out;
|
|
}
|
|
held_length = 0;
|
|
goto restart_nosblocks;
|
|
} else if (so->so_rcv.sb_cc == 0) {
|
|
if (so->so_error) {
|
|
error = so->so_error;
|
|
if ((in_flags & MSG_PEEK) == 0)
|
|
so->so_error = 0;
|
|
} else {
|
|
if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
|
|
(inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
|
|
if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
|
|
/*
|
|
* For active open side clear flags
|
|
* for re-use passive open is
|
|
* blocked by connect.
|
|
*/
|
|
if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
|
|
/*
|
|
* You were aborted, passive
|
|
* side always hits here
|
|
*/
|
|
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
|
|
error = ECONNRESET;
|
|
/*
|
|
* You get this once if you
|
|
* are active open side
|
|
*/
|
|
if (!(inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
|
|
/*
|
|
* Remove flag if on
|
|
* the active open
|
|
* side
|
|
*/
|
|
inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAS_ABORTED;
|
|
}
|
|
}
|
|
so->so_state &= ~(SS_ISCONNECTING |
|
|
SS_ISDISCONNECTING |
|
|
SS_ISCONFIRMING |
|
|
SS_ISCONNECTED);
|
|
if (error == 0) {
|
|
if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
|
|
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
|
|
error = ENOTCONN;
|
|
} else {
|
|
inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAS_CONNECTED;
|
|
}
|
|
}
|
|
goto out;
|
|
}
|
|
}
|
|
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EWOULDBLOCK);
|
|
error = EWOULDBLOCK;
|
|
}
|
|
goto out;
|
|
}
|
|
if (hold_sblock == 1) {
|
|
SOCKBUF_UNLOCK(&so->so_rcv);
|
|
hold_sblock = 0;
|
|
}
|
|
/* we possibly have data we can read */
|
|
/* sa_ignore FREED_MEMORY */
|
|
control = TAILQ_FIRST(&inp->read_queue);
|
|
if (control == NULL) {
|
|
/*
|
|
* This could be happening since the appender did the
|
|
* increment but as not yet did the tailq insert onto the
|
|
* read_queue
|
|
*/
|
|
if (hold_rlock == 0) {
|
|
SCTP_INP_READ_LOCK(inp);
|
|
hold_rlock = 1;
|
|
}
|
|
control = TAILQ_FIRST(&inp->read_queue);
|
|
if ((control == NULL) && (so->so_rcv.sb_cc != 0)) {
|
|
#ifdef INVARIANTS
|
|
panic("Huh, its non zero and nothing on control?");
|
|
#endif
|
|
so->so_rcv.sb_cc = 0;
|
|
}
|
|
SCTP_INP_READ_UNLOCK(inp);
|
|
hold_rlock = 0;
|
|
goto restart;
|
|
}
|
|
if ((control->length == 0) &&
|
|
(control->do_not_ref_stcb)) {
|
|
/*
|
|
* Clean up code for freeing assoc that left behind a
|
|
* pdapi.. maybe a peer in EEOR that just closed after
|
|
* sending and never indicated a EOR.
|
|
*/
|
|
if (hold_rlock == 0) {
|
|
hold_rlock = 1;
|
|
SCTP_INP_READ_LOCK(inp);
|
|
}
|
|
control->held_length = 0;
|
|
if (control->data) {
|
|
/* Hmm there is data here .. fix */
|
|
struct mbuf *m_tmp;
|
|
int cnt = 0;
|
|
|
|
m_tmp = control->data;
|
|
while (m_tmp) {
|
|
cnt += SCTP_BUF_LEN(m_tmp);
|
|
if (SCTP_BUF_NEXT(m_tmp) == NULL) {
|
|
control->tail_mbuf = m_tmp;
|
|
control->end_added = 1;
|
|
}
|
|
m_tmp = SCTP_BUF_NEXT(m_tmp);
|
|
}
|
|
control->length = cnt;
|
|
} else {
|
|
/* remove it */
|
|
TAILQ_REMOVE(&inp->read_queue, control, next);
|
|
/* Add back any hiddend data */
|
|
sctp_free_remote_addr(control->whoFrom);
|
|
sctp_free_a_readq(stcb, control);
|
|
}
|
|
if (hold_rlock) {
|
|
hold_rlock = 0;
|
|
SCTP_INP_READ_UNLOCK(inp);
|
|
}
|
|
goto restart;
|
|
}
|
|
if (control->length == 0) {
|
|
if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) &&
|
|
(filling_sinfo)) {
|
|
/* find a more suitable one then this */
|
|
ctl = TAILQ_NEXT(control, next);
|
|
while (ctl) {
|
|
if ((ctl->stcb != control->stcb) && (ctl->length) &&
|
|
(ctl->some_taken ||
|
|
(ctl->spec_flags & M_NOTIFICATION) ||
|
|
((ctl->do_not_ref_stcb == 0) &&
|
|
(ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))
|
|
) {
|
|
/*-
|
|
* If we have a different TCB next, and there is data
|
|
* present. If we have already taken some (pdapi), OR we can
|
|
* ref the tcb and no delivery as started on this stream, we
|
|
* take it. Note we allow a notification on a different
|
|
* assoc to be delivered..
|
|
*/
|
|
control = ctl;
|
|
goto found_one;
|
|
} else if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) &&
|
|
(ctl->length) &&
|
|
((ctl->some_taken) ||
|
|
((ctl->do_not_ref_stcb == 0) &&
|
|
((ctl->spec_flags & M_NOTIFICATION) == 0) &&
|
|
(ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))
|
|
) {
|
|
/*-
|
|
* If we have the same tcb, and there is data present, and we
|
|
* have the strm interleave feature present. Then if we have
|
|
* taken some (pdapi) or we can refer to tht tcb AND we have
|
|
* not started a delivery for this stream, we can take it.
|
|
* Note we do NOT allow a notificaiton on the same assoc to
|
|
* be delivered.
|
|
*/
|
|
control = ctl;
|
|
goto found_one;
|
|
}
|
|
ctl = TAILQ_NEXT(ctl, next);
|
|
}
|
|
}
|
|
/*
|
|
* if we reach here, not suitable replacement is available
|
|
* <or> fragment interleave is NOT on. So stuff the sb_cc
|
|
* into the our held count, and its time to sleep again.
|
|
*/
|
|
held_length = so->so_rcv.sb_cc;
|
|
control->held_length = so->so_rcv.sb_cc;
|
|
goto restart;
|
|
}
|
|
/* Clear the held length since there is something to read */
|
|
control->held_length = 0;
|
|
if (hold_rlock) {
|
|
SCTP_INP_READ_UNLOCK(inp);
|
|
hold_rlock = 0;
|
|
}
|
|
found_one:
|
|
/*
|
|
* If we reach here, control has a some data for us to read off.
|
|
* Note that stcb COULD be NULL.
|
|
*/
|
|
control->some_taken++;
|
|
if (hold_sblock) {
|
|
SOCKBUF_UNLOCK(&so->so_rcv);
|
|
hold_sblock = 0;
|
|
}
|
|
stcb = control->stcb;
|
|
if (stcb) {
|
|
if ((control->do_not_ref_stcb == 0) &&
|
|
(stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED)) {
|
|
if (freecnt_applied == 0)
|
|
stcb = NULL;
|
|
} else if (control->do_not_ref_stcb == 0) {
|
|
/* you can't free it on me please */
|
|
/*
|
|
* The lock on the socket buffer protects us so the
|
|
* free code will stop. But since we used the
|
|
* socketbuf lock and the sender uses the tcb_lock
|
|
* to increment, we need to use the atomic add to
|
|
* the refcnt
|
|
*/
|
|
if (freecnt_applied) {
|
|
#ifdef INVARIANTS
|
|
panic("refcnt already incremented");
|
|
#else
|
|
printf("refcnt already incremented?\n");
|
|
#endif
|
|
} else {
|
|
atomic_add_int(&stcb->asoc.refcnt, 1);
|
|
freecnt_applied = 1;
|
|
}
|
|
/*
|
|
* Setup to remember how much we have not yet told
|
|
* the peer our rwnd has opened up. Note we grab the
|
|
* value from the tcb from last time. Note too that
|
|
* sack sending clears this when a sack is sent,
|
|
* which is fine. Once we hit the rwnd_req, we then
|
|
* will go to the sctp_user_rcvd() that will not
|
|
* lock until it KNOWs it MUST send a WUP-SACK.
|
|
*/
|
|
freed_so_far = stcb->freed_by_sorcv_sincelast;
|
|
stcb->freed_by_sorcv_sincelast = 0;
|
|
}
|
|
}
|
|
if (stcb &&
|
|
((control->spec_flags & M_NOTIFICATION) == 0) &&
|
|
control->do_not_ref_stcb == 0) {
|
|
stcb->asoc.strmin[control->sinfo_stream].delivery_started = 1;
|
|
}
|
|
/* First lets get off the sinfo and sockaddr info */
|
|
if ((sinfo) && filling_sinfo) {
|
|
memcpy(sinfo, control, sizeof(struct sctp_nonpad_sndrcvinfo));
|
|
nxt = TAILQ_NEXT(control, next);
|
|
if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO)) {
|
|
struct sctp_extrcvinfo *s_extra;
|
|
|
|
s_extra = (struct sctp_extrcvinfo *)sinfo;
|
|
if ((nxt) &&
|
|
(nxt->length)) {
|
|
s_extra->sreinfo_next_flags = SCTP_NEXT_MSG_AVAIL;
|
|
if (nxt->sinfo_flags & SCTP_UNORDERED) {
|
|
s_extra->sreinfo_next_flags |= SCTP_NEXT_MSG_IS_UNORDERED;
|
|
}
|
|
if (nxt->spec_flags & M_NOTIFICATION) {
|
|
s_extra->sreinfo_next_flags |= SCTP_NEXT_MSG_IS_NOTIFICATION;
|
|
}
|
|
s_extra->sreinfo_next_aid = nxt->sinfo_assoc_id;
|
|
s_extra->sreinfo_next_length = nxt->length;
|
|
s_extra->sreinfo_next_ppid = nxt->sinfo_ppid;
|
|
s_extra->sreinfo_next_stream = nxt->sinfo_stream;
|
|
if (nxt->tail_mbuf != NULL) {
|
|
if (nxt->end_added) {
|
|
s_extra->sreinfo_next_flags |= SCTP_NEXT_MSG_ISCOMPLETE;
|
|
}
|
|
}
|
|
} else {
|
|
/*
|
|
* we explicitly 0 this, since the memcpy
|
|
* got some other things beyond the older
|
|
* sinfo_ that is on the control's structure
|
|
* :-D
|
|
*/
|
|
nxt = NULL;
|
|
s_extra->sreinfo_next_flags = SCTP_NO_NEXT_MSG;
|
|
s_extra->sreinfo_next_aid = 0;
|
|
s_extra->sreinfo_next_length = 0;
|
|
s_extra->sreinfo_next_ppid = 0;
|
|
s_extra->sreinfo_next_stream = 0;
|
|
}
|
|
}
|
|
/*
|
|
* update off the real current cum-ack, if we have an stcb.
|
|
*/
|
|
if ((control->do_not_ref_stcb == 0) && stcb)
|
|
sinfo->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
|
|
/*
|
|
* mask off the high bits, we keep the actual chunk bits in
|
|
* there.
|
|
*/
|
|
sinfo->sinfo_flags &= 0x00ff;
|
|
if ((control->sinfo_flags >> 8) & SCTP_DATA_UNORDERED) {
|
|
sinfo->sinfo_flags |= SCTP_UNORDERED;
|
|
}
|
|
}
|
|
#ifdef SCTP_ASOCLOG_OF_TSNS
|
|
{
|
|
int index, newindex;
|
|
struct sctp_pcbtsn_rlog *entry;
|
|
|
|
do {
|
|
index = inp->readlog_index;
|
|
newindex = index + 1;
|
|
if (newindex >= SCTP_READ_LOG_SIZE) {
|
|
newindex = 0;
|
|
}
|
|
} while (atomic_cmpset_int(&inp->readlog_index, index, newindex) == 0);
|
|
entry = &inp->readlog[index];
|
|
entry->vtag = control->sinfo_assoc_id;
|
|
entry->strm = control->sinfo_stream;
|
|
entry->seq = control->sinfo_ssn;
|
|
entry->sz = control->length;
|
|
entry->flgs = control->sinfo_flags;
|
|
}
|
|
#endif
|
|
if (fromlen && from) {
|
|
struct sockaddr *to;
|
|
|
|
#ifdef INET
|
|
cp_len = min((size_t)fromlen, (size_t)control->whoFrom->ro._l_addr.sin.sin_len);
|
|
memcpy(from, &control->whoFrom->ro._l_addr, cp_len);
|
|
((struct sockaddr_in *)from)->sin_port = control->port_from;
|
|
#else
|
|
/* No AF_INET use AF_INET6 */
|
|
cp_len = min((size_t)fromlen, (size_t)control->whoFrom->ro._l_addr.sin6.sin6_len);
|
|
memcpy(from, &control->whoFrom->ro._l_addr, cp_len);
|
|
((struct sockaddr_in6 *)from)->sin6_port = control->port_from;
|
|
#endif
|
|
|
|
to = from;
|
|
#if defined(INET) && defined(INET6)
|
|
if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) &&
|
|
(to->sa_family == AF_INET) &&
|
|
((size_t)fromlen >= sizeof(struct sockaddr_in6))) {
|
|
struct sockaddr_in *sin;
|
|
struct sockaddr_in6 sin6;
|
|
|
|
sin = (struct sockaddr_in *)to;
|
|
bzero(&sin6, sizeof(sin6));
|
|
sin6.sin6_family = AF_INET6;
|
|
sin6.sin6_len = sizeof(struct sockaddr_in6);
|
|
sin6.sin6_addr.s6_addr32[2] = htonl(0xffff);
|
|
bcopy(&sin->sin_addr,
|
|
&sin6.sin6_addr.s6_addr32[3],
|
|
sizeof(sin6.sin6_addr.s6_addr32[3]));
|
|
sin6.sin6_port = sin->sin_port;
|
|
memcpy(from, (caddr_t)&sin6, sizeof(sin6));
|
|
}
|
|
#endif
|
|
#if defined(INET6)
|
|
{
|
|
struct sockaddr_in6 lsa6, *to6;
|
|
|
|
to6 = (struct sockaddr_in6 *)to;
|
|
sctp_recover_scope_mac(to6, (&lsa6));
|
|
}
|
|
#endif
|
|
}
|
|
/* now copy out what data we can */
|
|
if (mp == NULL) {
|
|
/* copy out each mbuf in the chain up to length */
|
|
get_more_data:
|
|
m = control->data;
|
|
while (m) {
|
|
/* Move out all we can */
|
|
cp_len = (int)uio->uio_resid;
|
|
my_len = (int)SCTP_BUF_LEN(m);
|
|
if (cp_len > my_len) {
|
|
/* not enough in this buf */
|
|
cp_len = my_len;
|
|
}
|
|
if (hold_rlock) {
|
|
SCTP_INP_READ_UNLOCK(inp);
|
|
hold_rlock = 0;
|
|
}
|
|
if (cp_len > 0)
|
|
error = uiomove(mtod(m, char *), cp_len, uio);
|
|
/* re-read */
|
|
if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
|
|
goto release;
|
|
}
|
|
if ((control->do_not_ref_stcb == 0) && stcb &&
|
|
stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
|
|
no_rcv_needed = 1;
|
|
}
|
|
if (error) {
|
|
/* error we are out of here */
|
|
goto release;
|
|
}
|
|
if ((SCTP_BUF_NEXT(m) == NULL) &&
|
|
(cp_len >= SCTP_BUF_LEN(m)) &&
|
|
((control->end_added == 0) ||
|
|
(control->end_added &&
|
|
(TAILQ_NEXT(control, next) == NULL)))
|
|
) {
|
|
SCTP_INP_READ_LOCK(inp);
|
|
hold_rlock = 1;
|
|
}
|
|
if (cp_len == SCTP_BUF_LEN(m)) {
|
|
if ((SCTP_BUF_NEXT(m) == NULL) &&
|
|
(control->end_added)) {
|
|
out_flags |= MSG_EOR;
|
|
if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
|
|
control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
|
|
}
|
|
if (control->spec_flags & M_NOTIFICATION) {
|
|
out_flags |= MSG_NOTIFICATION;
|
|
}
|
|
/* we ate up the mbuf */
|
|
if (in_flags & MSG_PEEK) {
|
|
/* just looking */
|
|
m = SCTP_BUF_NEXT(m);
|
|
copied_so_far += cp_len;
|
|
} else {
|
|
/* dispose of the mbuf */
|
|
if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
|
|
sctp_sblog(&so->so_rcv,
|
|
control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
|
|
}
|
|
sctp_sbfree(control, stcb, &so->so_rcv, m);
|
|
if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
|
|
sctp_sblog(&so->so_rcv,
|
|
control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
|
|
}
|
|
embuf = m;
|
|
copied_so_far += cp_len;
|
|
freed_so_far += cp_len;
|
|
freed_so_far += MSIZE;
|
|
atomic_subtract_int(&control->length, cp_len);
|
|
control->data = sctp_m_free(m);
|
|
m = control->data;
|
|
/*
|
|
* been through it all, must hold sb
|
|
* lock ok to null tail
|
|
*/
|
|
if (control->data == NULL) {
|
|
#ifdef INVARIANTS
|
|
if ((control->end_added == 0) ||
|
|
(TAILQ_NEXT(control, next) == NULL)) {
|
|
/*
|
|
* If the end is not
|
|
* added, OR the
|
|
* next is NOT null
|
|
* we MUST have the
|
|
* lock.
|
|
*/
|
|
if (mtx_owned(&inp->inp_rdata_mtx) == 0) {
|
|
panic("Hmm we don't own the lock?");
|
|
}
|
|
}
|
|
#endif
|
|
control->tail_mbuf = NULL;
|
|
#ifdef INVARIANTS
|
|
if ((control->end_added) && ((out_flags & MSG_EOR) == 0)) {
|
|
panic("end_added, nothing left and no MSG_EOR");
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
} else {
|
|
/* Do we need to trim the mbuf? */
|
|
if (control->spec_flags & M_NOTIFICATION) {
|
|
out_flags |= MSG_NOTIFICATION;
|
|
}
|
|
if ((in_flags & MSG_PEEK) == 0) {
|
|
SCTP_BUF_RESV_UF(m, cp_len);
|
|
SCTP_BUF_LEN(m) -= cp_len;
|
|
if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
|
|
sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, cp_len);
|
|
}
|
|
atomic_subtract_int(&so->so_rcv.sb_cc, cp_len);
|
|
if ((control->do_not_ref_stcb == 0) &&
|
|
stcb) {
|
|
atomic_subtract_int(&stcb->asoc.sb_cc, cp_len);
|
|
}
|
|
copied_so_far += cp_len;
|
|
embuf = m;
|
|
freed_so_far += cp_len;
|
|
freed_so_far += MSIZE;
|
|
if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
|
|
sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb,
|
|
SCTP_LOG_SBRESULT, 0);
|
|
}
|
|
atomic_subtract_int(&control->length, cp_len);
|
|
} else {
|
|
copied_so_far += cp_len;
|
|
}
|
|
}
|
|
if ((out_flags & MSG_EOR) || (uio->uio_resid == 0)) {
|
|
break;
|
|
}
|
|
if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
|
|
(control->do_not_ref_stcb == 0) &&
|
|
(freed_so_far >= rwnd_req)) {
|
|
sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
|
|
}
|
|
} /* end while(m) */
|
|
/*
|
|
* At this point we have looked at it all and we either have
|
|
* a MSG_EOR/or read all the user wants... <OR>
|
|
* control->length == 0.
|
|
*/
|
|
if ((out_flags & MSG_EOR) && ((in_flags & MSG_PEEK) == 0)) {
|
|
/* we are done with this control */
|
|
if (control->length == 0) {
|
|
if (control->data) {
|
|
#ifdef INVARIANTS
|
|
panic("control->data not null at read eor?");
|
|
#else
|
|
SCTP_PRINTF("Strange, data left in the control buffer .. invarients would panic?\n");
|
|
sctp_m_freem(control->data);
|
|
control->data = NULL;
|
|
#endif
|
|
}
|
|
done_with_control:
|
|
if (TAILQ_NEXT(control, next) == NULL) {
|
|
/*
|
|
* If we don't have a next we need a
|
|
* lock, if there is a next
|
|
* interrupt is filling ahead of us
|
|
* and we don't need a lock to
|
|
* remove this guy (which is the
|
|
* head of the queue).
|
|
*/
|
|
if (hold_rlock == 0) {
|
|
SCTP_INP_READ_LOCK(inp);
|
|
hold_rlock = 1;
|
|
}
|
|
}
|
|
TAILQ_REMOVE(&inp->read_queue, control, next);
|
|
/* Add back any hiddend data */
|
|
if (control->held_length) {
|
|
held_length = 0;
|
|
control->held_length = 0;
|
|
wakeup_read_socket = 1;
|
|
}
|
|
if (control->aux_data) {
|
|
sctp_m_free(control->aux_data);
|
|
control->aux_data = NULL;
|
|
}
|
|
no_rcv_needed = control->do_not_ref_stcb;
|
|
sctp_free_remote_addr(control->whoFrom);
|
|
control->data = NULL;
|
|
sctp_free_a_readq(stcb, control);
|
|
control = NULL;
|
|
if ((freed_so_far >= rwnd_req) &&
|
|
(no_rcv_needed == 0))
|
|
sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
|
|
|
|
} else {
|
|
/*
|
|
* The user did not read all of this
|
|
* message, turn off the returned MSG_EOR
|
|
* since we are leaving more behind on the
|
|
* control to read.
|
|
*/
|
|
#ifdef INVARIANTS
|
|
if (control->end_added &&
|
|
(control->data == NULL) &&
|
|
(control->tail_mbuf == NULL)) {
|
|
panic("Gak, control->length is corrupt?");
|
|
}
|
|
#endif
|
|
no_rcv_needed = control->do_not_ref_stcb;
|
|
out_flags &= ~MSG_EOR;
|
|
}
|
|
}
|
|
if (out_flags & MSG_EOR) {
|
|
goto release;
|
|
}
|
|
if ((uio->uio_resid == 0) ||
|
|
((in_eeor_mode) && (copied_so_far >= max(so->so_rcv.sb_lowat, 1)))
|
|
) {
|
|
goto release;
|
|
}
|
|
/*
|
|
* If I hit here the receiver wants more and this message is
|
|
* NOT done (pd-api). So two questions. Can we block? if not
|
|
* we are done. Did the user NOT set MSG_WAITALL?
|
|
*/
|
|
if (block_allowed == 0) {
|
|
goto release;
|
|
}
|
|
/*
|
|
* We need to wait for more data a few things: - We don't
|
|
* sbunlock() so we don't get someone else reading. - We
|
|
* must be sure to account for the case where what is added
|
|
* is NOT to our control when we wakeup.
|
|
*/
|
|
|
|
/*
|
|
* Do we need to tell the transport a rwnd update might be
|
|
* needed before we go to sleep?
|
|
*/
|
|
if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
|
|
((freed_so_far >= rwnd_req) &&
|
|
(control->do_not_ref_stcb == 0) &&
|
|
(no_rcv_needed == 0))) {
|
|
sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
|
|
}
|
|
wait_some_more:
|
|
if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {
|
|
goto release;
|
|
}
|
|
if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)
|
|
goto release;
|
|
|
|
if (hold_rlock == 1) {
|
|
SCTP_INP_READ_UNLOCK(inp);
|
|
hold_rlock = 0;
|
|
}
|
|
if (hold_sblock == 0) {
|
|
SOCKBUF_LOCK(&so->so_rcv);
|
|
hold_sblock = 1;
|
|
}
|
|
if ((copied_so_far) && (control->length == 0) &&
|
|
(sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE))
|
|
) {
|
|
goto release;
|
|
}
|
|
if (so->so_rcv.sb_cc <= control->held_length) {
|
|
error = sbwait(&so->so_rcv);
|
|
if (error) {
|
|
goto release;
|
|
}
|
|
control->held_length = 0;
|
|
}
|
|
if (hold_sblock) {
|
|
SOCKBUF_UNLOCK(&so->so_rcv);
|
|
hold_sblock = 0;
|
|
}
|
|
if (control->length == 0) {
|
|
/* still nothing here */
|
|
if (control->end_added == 1) {
|
|
/* he aborted, or is done i.e.did a shutdown */
|
|
out_flags |= MSG_EOR;
|
|
if (control->pdapi_aborted) {
|
|
if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
|
|
control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
|
|
|
|
out_flags |= MSG_TRUNC;
|
|
} else {
|
|
if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
|
|
control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
|
|
}
|
|
goto done_with_control;
|
|
}
|
|
if (so->so_rcv.sb_cc > held_length) {
|
|
control->held_length = so->so_rcv.sb_cc;
|
|
held_length = 0;
|
|
}
|
|
goto wait_some_more;
|
|
} else if (control->data == NULL) {
|
|
/*
|
|
* we must re-sync since data is probably being
|
|
* added
|
|
*/
|
|
SCTP_INP_READ_LOCK(inp);
|
|
if ((control->length > 0) && (control->data == NULL)) {
|
|
/*
|
|
* big trouble.. we have the lock and its
|
|
* corrupt?
|
|
*/
|
|
#ifdef INVARIANTS
|
|
panic("Impossible data==NULL length !=0");
|
|
#endif
|
|
out_flags |= MSG_EOR;
|
|
out_flags |= MSG_TRUNC;
|
|
control->length = 0;
|
|
SCTP_INP_READ_UNLOCK(inp);
|
|
goto done_with_control;
|
|
}
|
|
SCTP_INP_READ_UNLOCK(inp);
|
|
/* We will fall around to get more data */
|
|
}
|
|
goto get_more_data;
|
|
} else {
|
|
/*-
|
|
* Give caller back the mbuf chain,
|
|
* store in uio_resid the length
|
|
*/
|
|
wakeup_read_socket = 0;
|
|
if ((control->end_added == 0) ||
|
|
(TAILQ_NEXT(control, next) == NULL)) {
|
|
/* Need to get rlock */
|
|
if (hold_rlock == 0) {
|
|
SCTP_INP_READ_LOCK(inp);
|
|
hold_rlock = 1;
|
|
}
|
|
}
|
|
if (control->end_added) {
|
|
out_flags |= MSG_EOR;
|
|
if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
|
|
control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
|
|
}
|
|
if (control->spec_flags & M_NOTIFICATION) {
|
|
out_flags |= MSG_NOTIFICATION;
|
|
}
|
|
uio->uio_resid = control->length;
|
|
*mp = control->data;
|
|
m = control->data;
|
|
while (m) {
|
|
if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
|
|
sctp_sblog(&so->so_rcv,
|
|
control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
|
|
}
|
|
sctp_sbfree(control, stcb, &so->so_rcv, m);
|
|
freed_so_far += SCTP_BUF_LEN(m);
|
|
freed_so_far += MSIZE;
|
|
if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
|
|
sctp_sblog(&so->so_rcv,
|
|
control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
|
|
}
|
|
m = SCTP_BUF_NEXT(m);
|
|
}
|
|
control->data = control->tail_mbuf = NULL;
|
|
control->length = 0;
|
|
if (out_flags & MSG_EOR) {
|
|
/* Done with this control */
|
|
goto done_with_control;
|
|
}
|
|
}
|
|
release:
|
|
if (hold_rlock == 1) {
|
|
SCTP_INP_READ_UNLOCK(inp);
|
|
hold_rlock = 0;
|
|
}
|
|
if (hold_sblock == 1) {
|
|
SOCKBUF_UNLOCK(&so->so_rcv);
|
|
hold_sblock = 0;
|
|
}
|
|
sbunlock(&so->so_rcv);
|
|
sockbuf_lock = 0;
|
|
|
|
release_unlocked:
|
|
if (hold_sblock) {
|
|
SOCKBUF_UNLOCK(&so->so_rcv);
|
|
hold_sblock = 0;
|
|
}
|
|
if ((stcb) && (in_flags & MSG_PEEK) == 0) {
|
|
if ((freed_so_far >= rwnd_req) &&
|
|
(control && (control->do_not_ref_stcb == 0)) &&
|
|
(no_rcv_needed == 0))
|
|
sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
|
|
}
|
|
out:
|
|
if (msg_flags) {
|
|
*msg_flags = out_flags;
|
|
}
|
|
if (((out_flags & MSG_EOR) == 0) &&
|
|
((in_flags & MSG_PEEK) == 0) &&
|
|
(sinfo) &&
|
|
(sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO))) {
|
|
struct sctp_extrcvinfo *s_extra;
|
|
|
|
s_extra = (struct sctp_extrcvinfo *)sinfo;
|
|
s_extra->sreinfo_next_flags = SCTP_NO_NEXT_MSG;
|
|
}
|
|
if (hold_rlock == 1) {
|
|
SCTP_INP_READ_UNLOCK(inp);
|
|
hold_rlock = 0;
|
|
}
|
|
if (hold_sblock) {
|
|
SOCKBUF_UNLOCK(&so->so_rcv);
|
|
hold_sblock = 0;
|
|
}
|
|
if (sockbuf_lock) {
|
|
sbunlock(&so->so_rcv);
|
|
}
|
|
if (freecnt_applied) {
|
|
/*
|
|
* The lock on the socket buffer protects us so the free
|
|
* code will stop. But since we used the socketbuf lock and
|
|
* the sender uses the tcb_lock to increment, we need to use
|
|
* the atomic add to the refcnt.
|
|
*/
|
|
if (stcb == NULL) {
|
|
#ifdef INVARIANTS
|
|
panic("stcb for refcnt has gone NULL?");
|
|
goto stage_left;
|
|
#else
|
|
goto stage_left;
|
|
#endif
|
|
}
|
|
atomic_add_int(&stcb->asoc.refcnt, -1);
|
|
freecnt_applied = 0;
|
|
/* Save the value back for next time */
|
|
stcb->freed_by_sorcv_sincelast = freed_so_far;
|
|
}
|
|
if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
|
|
if (stcb) {
|
|
sctp_misc_ints(SCTP_SORECV_DONE,
|
|
freed_so_far,
|
|
((uio) ? (slen - uio->uio_resid) : slen),
|
|
stcb->asoc.my_rwnd,
|
|
so->so_rcv.sb_cc);
|
|
} else {
|
|
sctp_misc_ints(SCTP_SORECV_DONE,
|
|
freed_so_far,
|
|
((uio) ? (slen - uio->uio_resid) : slen),
|
|
0,
|
|
so->so_rcv.sb_cc);
|
|
}
|
|
}
|
|
stage_left:
|
|
if (wakeup_read_socket) {
|
|
sctp_sorwakeup(inp, so);
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
|
|
#ifdef SCTP_MBUF_LOGGING
|
|
struct mbuf *
|
|
sctp_m_free(struct mbuf *m)
|
|
{
|
|
if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
|
|
if (SCTP_BUF_IS_EXTENDED(m)) {
|
|
sctp_log_mb(m, SCTP_MBUF_IFREE);
|
|
}
|
|
}
|
|
return (m_free(m));
|
|
}
|
|
|
|
void
|
|
sctp_m_freem(struct mbuf *mb)
|
|
{
|
|
while (mb != NULL)
|
|
mb = sctp_m_free(mb);
|
|
}
|
|
|
|
#endif
|
|
|
|
int
|
|
sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id)
|
|
{
|
|
/*
|
|
* Given a local address. For all associations that holds the
|
|
* address, request a peer-set-primary.
|
|
*/
|
|
struct sctp_ifa *ifa;
|
|
struct sctp_laddr *wi;
|
|
|
|
ifa = sctp_find_ifa_by_addr(sa, vrf_id, 0);
|
|
if (ifa == NULL) {
|
|
SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EADDRNOTAVAIL);
|
|
return (EADDRNOTAVAIL);
|
|
}
|
|
/*
|
|
* Now that we have the ifa we must awaken the iterator with this
|
|
* message.
|
|
*/
|
|
wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
|
|
if (wi == NULL) {
|
|
SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
|
|
return (ENOMEM);
|
|
}
|
|
/* Now incr the count and int wi structure */
|
|
SCTP_INCR_LADDR_COUNT();
|
|
bzero(wi, sizeof(*wi));
|
|
(void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
|
|
wi->ifa = ifa;
|
|
wi->action = SCTP_SET_PRIM_ADDR;
|
|
atomic_add_int(&ifa->refcount, 1);
|
|
|
|
/* Now add it to the work queue */
|
|
SCTP_IPI_ITERATOR_WQ_LOCK();
|
|
/*
|
|
* Should this really be a tailq? As it is we will process the
|
|
* newest first :-0
|
|
*/
|
|
LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
|
|
sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
|
|
(struct sctp_inpcb *)NULL,
|
|
(struct sctp_tcb *)NULL,
|
|
(struct sctp_nets *)NULL);
|
|
SCTP_IPI_ITERATOR_WQ_UNLOCK();
|
|
return (0);
|
|
}
|
|
|
|
|
|
int
|
|
sctp_soreceive(struct socket *so,
|
|
struct sockaddr **psa,
|
|
struct uio *uio,
|
|
struct mbuf **mp0,
|
|
struct mbuf **controlp,
|
|
int *flagsp)
|
|
{
|
|
int error, fromlen;
|
|
uint8_t sockbuf[256];
|
|
struct sockaddr *from;
|
|
struct sctp_extrcvinfo sinfo;
|
|
int filling_sinfo = 1;
|
|
struct sctp_inpcb *inp;
|
|
|
|
inp = (struct sctp_inpcb *)so->so_pcb;
|
|
/* pickup the assoc we are reading from */
|
|
if (inp == NULL) {
|
|
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
|
|
return (EINVAL);
|
|
}
|
|
if ((sctp_is_feature_off(inp,
|
|
SCTP_PCB_FLAGS_RECVDATAIOEVNT)) ||
|
|
(controlp == NULL)) {
|
|
/* user does not want the sndrcv ctl */
|
|
filling_sinfo = 0;
|
|
}
|
|
if (psa) {
|
|
from = (struct sockaddr *)sockbuf;
|
|
fromlen = sizeof(sockbuf);
|
|
from->sa_len = 0;
|
|
} else {
|
|
from = NULL;
|
|
fromlen = 0;
|
|
}
|
|
|
|
error = sctp_sorecvmsg(so, uio, mp0, from, fromlen, flagsp,
|
|
(struct sctp_sndrcvinfo *)&sinfo, filling_sinfo);
|
|
if ((controlp) && (filling_sinfo)) {
|
|
/* copy back the sinfo in a CMSG format */
|
|
if (filling_sinfo)
|
|
*controlp = sctp_build_ctl_nchunk(inp,
|
|
(struct sctp_sndrcvinfo *)&sinfo);
|
|
else
|
|
*controlp = NULL;
|
|
}
|
|
if (psa) {
|
|
/* copy back the address info */
|
|
if (from && from->sa_len) {
|
|
*psa = sodupsockaddr(from, M_NOWAIT);
|
|
} else {
|
|
*psa = NULL;
|
|
}
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
|
|
int
|
|
sctp_l_soreceive(struct socket *so,
|
|
struct sockaddr **name,
|
|
struct uio *uio,
|
|
char **controlp,
|
|
int *controllen,
|
|
int *flag)
|
|
{
|
|
int error, fromlen;
|
|
uint8_t sockbuf[256];
|
|
struct sockaddr *from;
|
|
struct sctp_extrcvinfo sinfo;
|
|
int filling_sinfo = 1;
|
|
struct sctp_inpcb *inp;
|
|
|
|
inp = (struct sctp_inpcb *)so->so_pcb;
|
|
/* pickup the assoc we are reading from */
|
|
if (inp == NULL) {
|
|
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
|
|
return (EINVAL);
|
|
}
|
|
if ((sctp_is_feature_off(inp,
|
|
SCTP_PCB_FLAGS_RECVDATAIOEVNT)) ||
|
|
(controlp == NULL)) {
|
|
/* user does not want the sndrcv ctl */
|
|
filling_sinfo = 0;
|
|
}
|
|
if (name) {
|
|
from = (struct sockaddr *)sockbuf;
|
|
fromlen = sizeof(sockbuf);
|
|
from->sa_len = 0;
|
|
} else {
|
|
from = NULL;
|
|
fromlen = 0;
|
|
}
|
|
|
|
error = sctp_sorecvmsg(so, uio,
|
|
(struct mbuf **)NULL,
|
|
from, fromlen, flag,
|
|
(struct sctp_sndrcvinfo *)&sinfo,
|
|
filling_sinfo);
|
|
if ((controlp) && (filling_sinfo)) {
|
|
/*
|
|
* copy back the sinfo in a CMSG format note that the caller
|
|
* has reponsibility for freeing the memory.
|
|
*/
|
|
if (filling_sinfo)
|
|
*controlp = sctp_build_ctl_cchunk(inp,
|
|
controllen,
|
|
(struct sctp_sndrcvinfo *)&sinfo);
|
|
}
|
|
if (name) {
|
|
/* copy back the address info */
|
|
if (from && from->sa_len) {
|
|
*name = sodupsockaddr(from, M_WAIT);
|
|
} else {
|
|
*name = NULL;
|
|
}
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
int
|
|
sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr,
|
|
int totaddr, int *error)
|
|
{
|
|
int added = 0;
|
|
int i;
|
|
struct sctp_inpcb *inp;
|
|
struct sockaddr *sa;
|
|
size_t incr = 0;
|
|
|
|
sa = addr;
|
|
inp = stcb->sctp_ep;
|
|
*error = 0;
|
|
for (i = 0; i < totaddr; i++) {
|
|
if (sa->sa_family == AF_INET) {
|
|
incr = sizeof(struct sockaddr_in);
|
|
if (sctp_add_remote_addr(stcb, sa, SCTP_DONOT_SETSCOPE, SCTP_ADDR_IS_CONFIRMED)) {
|
|
/* assoc gone no un-lock */
|
|
SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
|
|
(void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_7);
|
|
*error = ENOBUFS;
|
|
goto out_now;
|
|
}
|
|
added++;
|
|
} else if (sa->sa_family == AF_INET6) {
|
|
incr = sizeof(struct sockaddr_in6);
|
|
if (sctp_add_remote_addr(stcb, sa, SCTP_DONOT_SETSCOPE, SCTP_ADDR_IS_CONFIRMED)) {
|
|
/* assoc gone no un-lock */
|
|
SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
|
|
(void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_8);
|
|
*error = ENOBUFS;
|
|
goto out_now;
|
|
}
|
|
added++;
|
|
}
|
|
sa = (struct sockaddr *)((caddr_t)sa + incr);
|
|
}
|
|
out_now:
|
|
return (added);
|
|
}
|
|
|
|
struct sctp_tcb *
|
|
sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr,
|
|
int *totaddr, int *num_v4, int *num_v6, int *error,
|
|
int limit, int *bad_addr)
|
|
{
|
|
struct sockaddr *sa;
|
|
struct sctp_tcb *stcb = NULL;
|
|
size_t incr, at, i;
|
|
|
|
at = incr = 0;
|
|
sa = addr;
|
|
*error = *num_v6 = *num_v4 = 0;
|
|
/* account and validate addresses */
|
|
for (i = 0; i < (size_t)*totaddr; i++) {
|
|
if (sa->sa_family == AF_INET) {
|
|
(*num_v4) += 1;
|
|
incr = sizeof(struct sockaddr_in);
|
|
if (sa->sa_len != incr) {
|
|
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
|
|
*error = EINVAL;
|
|
*bad_addr = 1;
|
|
return (NULL);
|
|
}
|
|
} else if (sa->sa_family == AF_INET6) {
|
|
struct sockaddr_in6 *sin6;
|
|
|
|
sin6 = (struct sockaddr_in6 *)sa;
|
|
if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
|
|
/* Must be non-mapped for connectx */
|
|
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
|
|
*error = EINVAL;
|
|
*bad_addr = 1;
|
|
return (NULL);
|
|
}
|
|
(*num_v6) += 1;
|
|
incr = sizeof(struct sockaddr_in6);
|
|
if (sa->sa_len != incr) {
|
|
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
|
|
*error = EINVAL;
|
|
*bad_addr = 1;
|
|
return (NULL);
|
|
}
|
|
} else {
|
|
*totaddr = i;
|
|
/* we are done */
|
|
break;
|
|
}
|
|
SCTP_INP_INCR_REF(inp);
|
|
stcb = sctp_findassociation_ep_addr(&inp, sa, NULL, NULL, NULL);
|
|
if (stcb != NULL) {
|
|
/* Already have or am bring up an association */
|
|
return (stcb);
|
|
} else {
|
|
SCTP_INP_DECR_REF(inp);
|
|
}
|
|
if ((at + incr) > (size_t)limit) {
|
|
*totaddr = i;
|
|
break;
|
|
}
|
|
sa = (struct sockaddr *)((caddr_t)sa + incr);
|
|
}
|
|
return ((struct sctp_tcb *)NULL);
|
|
}
|
|
|
|
/*
|
|
* sctp_bindx(ADD) for one address.
|
|
* assumes all arguments are valid/checked by caller.
|
|
*/
|
|
void
|
|
sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp,
|
|
struct sockaddr *sa, sctp_assoc_t assoc_id,
|
|
uint32_t vrf_id, int *error, void *p)
|
|
{
|
|
struct sockaddr *addr_touse;
|
|
|
|
#ifdef INET6
|
|
struct sockaddr_in sin;
|
|
|
|
#endif
|
|
|
|
/* see if we're bound all already! */
|
|
if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
|
|
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
|
|
*error = EINVAL;
|
|
return;
|
|
}
|
|
addr_touse = sa;
|
|
#if defined(INET6) && !defined(__Userspace__) /* TODO port in6_sin6_2_sin */
|
|
if (sa->sa_family == AF_INET6) {
|
|
struct sockaddr_in6 *sin6;
|
|
|
|
if (sa->sa_len != sizeof(struct sockaddr_in6)) {
|
|
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
|
|
*error = EINVAL;
|
|
return;
|
|
}
|
|
if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
|
|
/* can only bind v6 on PF_INET6 sockets */
|
|
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
|
|
*error = EINVAL;
|
|
return;
|
|
}
|
|
sin6 = (struct sockaddr_in6 *)addr_touse;
|
|
if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
|
|
if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
|
|
SCTP_IPV6_V6ONLY(inp)) {
|
|
/* can't bind v4-mapped on PF_INET sockets */
|
|
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
|
|
*error = EINVAL;
|
|
return;
|
|
}
|
|
in6_sin6_2_sin(&sin, sin6);
|
|
addr_touse = (struct sockaddr *)&sin;
|
|
}
|
|
}
|
|
#endif
|
|
if (sa->sa_family == AF_INET) {
|
|
if (sa->sa_len != sizeof(struct sockaddr_in)) {
|
|
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
|
|
*error = EINVAL;
|
|
return;
|
|
}
|
|
if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
|
|
SCTP_IPV6_V6ONLY(inp)) {
|
|
/* can't bind v4 on PF_INET sockets */
|
|
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
|
|
*error = EINVAL;
|
|
return;
|
|
}
|
|
}
|
|
if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
|
|
if (p == NULL) {
|
|
/* Can't get proc for Net/Open BSD */
|
|
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
|
|
*error = EINVAL;
|
|
return;
|
|
}
|
|
*error = sctp_inpcb_bind(so, addr_touse, NULL, p);
|
|
return;
|
|
}
|
|
/*
|
|
* No locks required here since bind and mgmt_ep_sa all do their own
|
|
* locking. If we do something for the FIX: below we may need to
|
|
* lock in that case.
|
|
*/
|
|
if (assoc_id == 0) {
|
|
/* add the address */
|
|
struct sctp_inpcb *lep;
|
|
struct sockaddr_in *lsin = (struct sockaddr_in *)addr_touse;
|
|
|
|
/* validate the incoming port */
|
|
if ((lsin->sin_port != 0) &&
|
|
(lsin->sin_port != inp->sctp_lport)) {
|
|
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
|
|
*error = EINVAL;
|
|
return;
|
|
} else {
|
|
/* user specified 0 port, set it to existing port */
|
|
lsin->sin_port = inp->sctp_lport;
|
|
}
|
|
|
|
lep = sctp_pcb_findep(addr_touse, 1, 0, vrf_id);
|
|
if (lep != NULL) {
|
|
/*
|
|
* We must decrement the refcount since we have the
|
|
* ep already and are binding. No remove going on
|
|
* here.
|
|
*/
|
|
SCTP_INP_DECR_REF(lep);
|
|
}
|
|
if (lep == inp) {
|
|
/* already bound to it.. ok */
|
|
return;
|
|
} else if (lep == NULL) {
|
|
((struct sockaddr_in *)addr_touse)->sin_port = 0;
|
|
*error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
|
|
SCTP_ADD_IP_ADDRESS,
|
|
vrf_id, NULL);
|
|
} else {
|
|
*error = EADDRINUSE;
|
|
}
|
|
if (*error)
|
|
return;
|
|
} else {
|
|
/*
|
|
* FIX: decide whether we allow assoc based bindx
|
|
*/
|
|
}
|
|
}
|
|
|
|
/*
|
|
* sctp_bindx(DELETE) for one address.
|
|
* assumes all arguments are valid/checked by caller.
|
|
*/
|
|
void
|
|
sctp_bindx_delete_address(struct socket *so, struct sctp_inpcb *inp,
|
|
struct sockaddr *sa, sctp_assoc_t assoc_id,
|
|
uint32_t vrf_id, int *error)
|
|
{
|
|
struct sockaddr *addr_touse;
|
|
|
|
#ifdef INET6
|
|
struct sockaddr_in sin;
|
|
|
|
#endif
|
|
|
|
/* see if we're bound all already! */
|
|
if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
|
|
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
|
|
*error = EINVAL;
|
|
return;
|
|
}
|
|
addr_touse = sa;
|
|
#if defined(INET6) && !defined(__Userspace__) /* TODO port in6_sin6_2_sin */
|
|
if (sa->sa_family == AF_INET6) {
|
|
struct sockaddr_in6 *sin6;
|
|
|
|
if (sa->sa_len != sizeof(struct sockaddr_in6)) {
|
|
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
|
|
*error = EINVAL;
|
|
return;
|
|
}
|
|
if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
|
|
/* can only bind v6 on PF_INET6 sockets */
|
|
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
|
|
*error = EINVAL;
|
|
return;
|
|
}
|
|
sin6 = (struct sockaddr_in6 *)addr_touse;
|
|
if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
|
|
if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
|
|
SCTP_IPV6_V6ONLY(inp)) {
|
|
/* can't bind mapped-v4 on PF_INET sockets */
|
|
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
|
|
*error = EINVAL;
|
|
return;
|
|
}
|
|
in6_sin6_2_sin(&sin, sin6);
|
|
addr_touse = (struct sockaddr *)&sin;
|
|
}
|
|
}
|
|
#endif
|
|
if (sa->sa_family == AF_INET) {
|
|
if (sa->sa_len != sizeof(struct sockaddr_in)) {
|
|
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
|
|
*error = EINVAL;
|
|
return;
|
|
}
|
|
if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
|
|
SCTP_IPV6_V6ONLY(inp)) {
|
|
/* can't bind v4 on PF_INET sockets */
|
|
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
|
|
*error = EINVAL;
|
|
return;
|
|
}
|
|
}
|
|
/*
|
|
* No lock required mgmt_ep_sa does its own locking. If the FIX:
|
|
* below is ever changed we may need to lock before calling
|
|
* association level binding.
|
|
*/
|
|
if (assoc_id == 0) {
|
|
/* delete the address */
|
|
*error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
|
|
SCTP_DEL_IP_ADDRESS,
|
|
vrf_id, NULL);
|
|
} else {
|
|
/*
|
|
* FIX: decide whether we allow assoc based bindx
|
|
*/
|
|
}
|
|
}
|
|
|
|
/*
|
|
* returns the valid local address count for an assoc, taking into account
|
|
* all scoping rules
|
|
*/
|
|
int
|
|
sctp_local_addr_count(struct sctp_tcb *stcb)
|
|
{
|
|
int loopback_scope, ipv4_local_scope, local_scope, site_scope;
|
|
int ipv4_addr_legal, ipv6_addr_legal;
|
|
struct sctp_vrf *vrf;
|
|
struct sctp_ifn *sctp_ifn;
|
|
struct sctp_ifa *sctp_ifa;
|
|
int count = 0;
|
|
|
|
/* Turn on all the appropriate scopes */
|
|
loopback_scope = stcb->asoc.loopback_scope;
|
|
ipv4_local_scope = stcb->asoc.ipv4_local_scope;
|
|
local_scope = stcb->asoc.local_scope;
|
|
site_scope = stcb->asoc.site_scope;
|
|
ipv4_addr_legal = ipv6_addr_legal = 0;
|
|
if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
|
|
ipv6_addr_legal = 1;
|
|
if (SCTP_IPV6_V6ONLY(stcb->sctp_ep) == 0) {
|
|
ipv4_addr_legal = 1;
|
|
}
|
|
} else {
|
|
ipv4_addr_legal = 1;
|
|
}
|
|
|
|
SCTP_IPI_ADDR_RLOCK();
|
|
vrf = sctp_find_vrf(stcb->asoc.vrf_id);
|
|
if (vrf == NULL) {
|
|
/* no vrf, no addresses */
|
|
SCTP_IPI_ADDR_RUNLOCK();
|
|
return (0);
|
|
}
|
|
if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
|
|
/*
|
|
* bound all case: go through all ifns on the vrf
|
|
*/
|
|
LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
|
|
if ((loopback_scope == 0) &&
|
|
SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
|
|
continue;
|
|
}
|
|
LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
|
|
if (sctp_is_addr_restricted(stcb, sctp_ifa))
|
|
continue;
|
|
switch (sctp_ifa->address.sa.sa_family) {
|
|
case AF_INET:
|
|
if (ipv4_addr_legal) {
|
|
struct sockaddr_in *sin;
|
|
|
|
sin = (struct sockaddr_in *)&sctp_ifa->address.sa;
|
|
if (sin->sin_addr.s_addr == 0) {
|
|
/*
|
|
* skip unspecified
|
|
* addrs
|
|
*/
|
|
continue;
|
|
}
|
|
if ((ipv4_local_scope == 0) &&
|
|
(IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
|
|
continue;
|
|
}
|
|
/* count this one */
|
|
count++;
|
|
} else {
|
|
continue;
|
|
}
|
|
break;
|
|
#ifdef INET6
|
|
case AF_INET6:
|
|
if (ipv6_addr_legal) {
|
|
struct sockaddr_in6 *sin6;
|
|
|
|
sin6 = (struct sockaddr_in6 *)&sctp_ifa->address.sa;
|
|
if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
|
|
continue;
|
|
}
|
|
if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
|
|
if (local_scope == 0)
|
|
continue;
|
|
if (sin6->sin6_scope_id == 0) {
|
|
if (sa6_recoverscope(sin6) != 0)
|
|
/*
|
|
*
|
|
* bad
|
|
*
|
|
* li
|
|
* nk
|
|
*
|
|
* loc
|
|
* al
|
|
*
|
|
* add
|
|
* re
|
|
* ss
|
|
* */
|
|
continue;
|
|
}
|
|
}
|
|
if ((site_scope == 0) &&
|
|
(IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
|
|
continue;
|
|
}
|
|
/* count this one */
|
|
count++;
|
|
}
|
|
break;
|
|
#endif
|
|
default:
|
|
/* TSNH */
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
/*
|
|
* subset bound case
|
|
*/
|
|
struct sctp_laddr *laddr;
|
|
|
|
LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list,
|
|
sctp_nxt_addr) {
|
|
if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
|
|
continue;
|
|
}
|
|
/* count this one */
|
|
count++;
|
|
}
|
|
}
|
|
SCTP_IPI_ADDR_RUNLOCK();
|
|
return (count);
|
|
}
|
|
|
|
#if defined(SCTP_LOCAL_TRACE_BUF)
|
|
|
|
void
|
|
sctp_log_trace(uint32_t subsys, const char *str SCTP_UNUSED, uint32_t a, uint32_t b, uint32_t c, uint32_t d, uint32_t e, uint32_t f)
|
|
{
|
|
uint32_t saveindex, newindex;
|
|
|
|
do {
|
|
saveindex = SCTP_BASE_SYSCTL(sctp_log).index;
|
|
if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
|
|
newindex = 1;
|
|
} else {
|
|
newindex = saveindex + 1;
|
|
}
|
|
} while (atomic_cmpset_int(&SCTP_BASE_SYSCTL(sctp_log).index, saveindex, newindex) == 0);
|
|
if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
|
|
saveindex = 0;
|
|
}
|
|
SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].timestamp = SCTP_GET_CYCLECOUNT;
|
|
SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].subsys = subsys;
|
|
SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[0] = a;
|
|
SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[1] = b;
|
|
SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[2] = c;
|
|
SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[3] = d;
|
|
SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[4] = e;
|
|
SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[5] = f;
|
|
}
|
|
|
|
#endif
|
|
/* We will need to add support
|
|
* to bind the ports and such here
|
|
* so we can do UDP tunneling. In
|
|
* the mean-time, we return error
|
|
*/
|
|
#include <netinet/udp.h>
|
|
#include <netinet/udp_var.h>
|
|
#include <sys/proc.h>
|
|
#ifdef INET6
|
|
#include <netinet6/sctp6_var.h>
|
|
#endif
|
|
|
|
static void
|
|
sctp_recv_udp_tunneled_packet(struct mbuf *m, int off, struct inpcb *ignored)
|
|
{
|
|
struct ip *iph;
|
|
struct mbuf *sp, *last;
|
|
struct udphdr *uhdr;
|
|
uint16_t port = 0, len;
|
|
int header_size = sizeof(struct udphdr) + sizeof(struct sctphdr);
|
|
|
|
/*
|
|
* Split out the mbuf chain. Leave the IP header in m, place the
|
|
* rest in the sp.
|
|
*/
|
|
if ((m->m_flags & M_PKTHDR) == 0) {
|
|
/* Can't handle one that is not a pkt hdr */
|
|
goto out;
|
|
}
|
|
/* pull the src port */
|
|
iph = mtod(m, struct ip *);
|
|
uhdr = (struct udphdr *)((caddr_t)iph + off);
|
|
|
|
port = uhdr->uh_sport;
|
|
sp = m_split(m, off, M_DONTWAIT);
|
|
if (sp == NULL) {
|
|
/* Gak, drop packet, we can't do a split */
|
|
goto out;
|
|
}
|
|
if (sp->m_pkthdr.len < header_size) {
|
|
/* Gak, packet can't have an SCTP header in it - to small */
|
|
m_freem(sp);
|
|
goto out;
|
|
}
|
|
/* ok now pull up the UDP header and SCTP header together */
|
|
sp = m_pullup(sp, header_size);
|
|
if (sp == NULL) {
|
|
/* Gak pullup failed */
|
|
goto out;
|
|
}
|
|
/* trim out the UDP header */
|
|
m_adj(sp, sizeof(struct udphdr));
|
|
|
|
/* Now reconstruct the mbuf chain */
|
|
/* 1) find last one */
|
|
last = m;
|
|
while (last->m_next != NULL) {
|
|
last = last->m_next;
|
|
}
|
|
last->m_next = sp;
|
|
m->m_pkthdr.len += sp->m_pkthdr.len;
|
|
last = m;
|
|
while (last != NULL) {
|
|
last = last->m_next;
|
|
}
|
|
/* Now its ready for sctp_input or sctp6_input */
|
|
iph = mtod(m, struct ip *);
|
|
switch (iph->ip_v) {
|
|
case IPVERSION:
|
|
{
|
|
/* its IPv4 */
|
|
len = SCTP_GET_IPV4_LENGTH(iph);
|
|
len -= sizeof(struct udphdr);
|
|
SCTP_GET_IPV4_LENGTH(iph) = len;
|
|
sctp_input_with_port(m, off, port);
|
|
break;
|
|
}
|
|
#ifdef INET6
|
|
case IPV6_VERSION >> 4:
|
|
{
|
|
/* its IPv6 - NOT supported */
|
|
goto out;
|
|
break;
|
|
|
|
}
|
|
#endif
|
|
default:
|
|
{
|
|
m_freem(m);
|
|
break;
|
|
}
|
|
}
|
|
return;
|
|
out:
|
|
m_freem(m);
|
|
}
|
|
|
|
void
|
|
sctp_over_udp_stop(void)
|
|
{
|
|
struct socket *sop;
|
|
|
|
/*
|
|
* This function assumes sysctl caller holds sctp_sysctl_info_lock()
|
|
* for writting!
|
|
*/
|
|
if (SCTP_BASE_INFO(udp_tun_socket) == NULL) {
|
|
/* Nothing to do */
|
|
return;
|
|
}
|
|
sop = SCTP_BASE_INFO(udp_tun_socket);
|
|
soclose(sop);
|
|
SCTP_BASE_INFO(udp_tun_socket) = NULL;
|
|
}
|
|
int
|
|
sctp_over_udp_start(void)
|
|
{
|
|
uint16_t port;
|
|
int ret;
|
|
struct sockaddr_in sin;
|
|
struct socket *sop = NULL;
|
|
struct thread *th;
|
|
struct ucred *cred;
|
|
|
|
/*
|
|
* This function assumes sysctl caller holds sctp_sysctl_info_lock()
|
|
* for writting!
|
|
*/
|
|
port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port);
|
|
if (port == 0) {
|
|
/* Must have a port set */
|
|
return (EINVAL);
|
|
}
|
|
if (SCTP_BASE_INFO(udp_tun_socket) != NULL) {
|
|
/* Already running -- must stop first */
|
|
return (EALREADY);
|
|
}
|
|
th = curthread;
|
|
cred = th->td_ucred;
|
|
if ((ret = socreate(PF_INET, &sop,
|
|
SOCK_DGRAM, IPPROTO_UDP, cred, th))) {
|
|
return (ret);
|
|
}
|
|
SCTP_BASE_INFO(udp_tun_socket) = sop;
|
|
/* call the special UDP hook */
|
|
ret = udp_set_kernel_tunneling(sop, sctp_recv_udp_tunneled_packet);
|
|
if (ret) {
|
|
goto exit_stage_left;
|
|
}
|
|
/* Ok we have a socket, bind it to the port */
|
|
memset(&sin, 0, sizeof(sin));
|
|
sin.sin_len = sizeof(sin);
|
|
sin.sin_family = AF_INET;
|
|
sin.sin_port = htons(port);
|
|
ret = sobind(sop, (struct sockaddr *)&sin, th);
|
|
if (ret) {
|
|
/* Close up we cant get the port */
|
|
exit_stage_left:
|
|
sctp_over_udp_stop();
|
|
return (ret);
|
|
}
|
|
/*
|
|
* Ok we should now get UDP packets directly to our input routine
|
|
* sctp_recv_upd_tunneled_packet().
|
|
*/
|
|
return (0);
|
|
}
|