7090 lines
191 KiB
C
7090 lines
191 KiB
C
/*-
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* Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved.
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* Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
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* Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* a) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* b) Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the distribution.
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*
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* c) Neither the name of Cisco Systems, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#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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#include <netinet6/sctp6_var.h>
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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_bsd_addr.h>
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#include <netinet/udp.h>
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#include <netinet/udp_var.h>
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#include <sys/proc.h>
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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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extern struct sctp_cc_functions sctp_cc_functions[];
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extern struct sctp_ss_functions sctp_ss_functions[];
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void
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sctp_sblog(struct sockbuf *sb, 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->rtt / 1000;
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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, 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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#ifdef SCTP_MBUF_LOGGING
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void
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sctp_log_mb(struct mbuf *m, int from)
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{
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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_mbc(struct mbuf *m, int from)
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{
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struct mbuf *mat;
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for (mat = m; mat; mat = SCTP_BUF_NEXT(mat)) {
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sctp_log_mb(mat, from);
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}
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}
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#endif
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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, 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 && (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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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",
|
|
SCTP_LOG_EVENT_MAXBURST,
|
|
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(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);
|
|
}
|
|
|
|
#ifdef SCTP_MBCNT_LOGGING
|
|
static 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);
|
|
}
|
|
|
|
#endif
|
|
|
|
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 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 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 SCTP_UNUSED, size_t *optsize SCTP_UNUSED)
|
|
{
|
|
/* 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_cnt);
|
|
|
|
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:%p flight was %d corrected to %d\n",
|
|
(void *)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
|
|
|
|
/*
|
|
* sctp_stop_timers_for_shutdown() should be called
|
|
* when entering the SHUTDOWN_SENT or SHUTDOWN_ACK_SENT
|
|
* state to make sure that all timers are stopped.
|
|
*/
|
|
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->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->pmtu_timer.timer);
|
|
(void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* a list of sizes based on typical mtu's, used only if next hop size not
|
|
* returned.
|
|
*/
|
|
static uint32_t sctp_mtu_sizes[] = {
|
|
68,
|
|
296,
|
|
508,
|
|
512,
|
|
544,
|
|
576,
|
|
1006,
|
|
1492,
|
|
1500,
|
|
1536,
|
|
2002,
|
|
2048,
|
|
4352,
|
|
4464,
|
|
8166,
|
|
17914,
|
|
32000,
|
|
65535
|
|
};
|
|
|
|
/*
|
|
* Return the largest MTU smaller than val. If there is no
|
|
* entry, just return val.
|
|
*/
|
|
uint32_t
|
|
sctp_get_prev_mtu(uint32_t val)
|
|
{
|
|
uint32_t i;
|
|
|
|
if (val <= sctp_mtu_sizes[0]) {
|
|
return (val);
|
|
}
|
|
for (i = 1; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) {
|
|
if (val <= sctp_mtu_sizes[i]) {
|
|
break;
|
|
}
|
|
}
|
|
return (sctp_mtu_sizes[i - 1]);
|
|
}
|
|
|
|
/*
|
|
* Return the smallest MTU larger than val. If there is no
|
|
* entry, just return val.
|
|
*/
|
|
uint32_t
|
|
sctp_get_next_mtu(uint32_t val)
|
|
{
|
|
/* select another MTU that is just bigger than this one */
|
|
uint32_t i;
|
|
|
|
for (i = 0; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) {
|
|
if (val < sctp_mtu_sizes[i]) {
|
|
return (sctp_mtu_sizes[i]);
|
|
}
|
|
}
|
|
return (val);
|
|
}
|
|
|
|
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 check)
|
|
{
|
|
uint32_t x;
|
|
struct timeval now;
|
|
|
|
if (check) {
|
|
(void)SCTP_GETTIME_TIMEVAL(&now);
|
|
}
|
|
for (;;) {
|
|
x = sctp_select_initial_TSN(&inp->sctp_ep);
|
|
if (x == 0) {
|
|
/* we never use 0 */
|
|
continue;
|
|
}
|
|
if (!check || sctp_is_vtag_good(x, lport, rport, &now)) {
|
|
break;
|
|
}
|
|
}
|
|
return (x);
|
|
}
|
|
|
|
int32_t
|
|
sctp_map_assoc_state(int kernel_state)
|
|
{
|
|
int32_t user_state;
|
|
|
|
if (kernel_state & SCTP_STATE_WAS_ABORTED) {
|
|
user_state = SCTP_CLOSED;
|
|
} else if (kernel_state & SCTP_STATE_SHUTDOWN_PENDING) {
|
|
user_state = SCTP_SHUTDOWN_PENDING;
|
|
} else {
|
|
switch (kernel_state & SCTP_STATE_MASK) {
|
|
case SCTP_STATE_EMPTY:
|
|
user_state = SCTP_CLOSED;
|
|
break;
|
|
case SCTP_STATE_INUSE:
|
|
user_state = SCTP_CLOSED;
|
|
break;
|
|
case SCTP_STATE_COOKIE_WAIT:
|
|
user_state = SCTP_COOKIE_WAIT;
|
|
break;
|
|
case SCTP_STATE_COOKIE_ECHOED:
|
|
user_state = SCTP_COOKIE_ECHOED;
|
|
break;
|
|
case SCTP_STATE_OPEN:
|
|
user_state = SCTP_ESTABLISHED;
|
|
break;
|
|
case SCTP_STATE_SHUTDOWN_SENT:
|
|
user_state = SCTP_SHUTDOWN_SENT;
|
|
break;
|
|
case SCTP_STATE_SHUTDOWN_RECEIVED:
|
|
user_state = SCTP_SHUTDOWN_RECEIVED;
|
|
break;
|
|
case SCTP_STATE_SHUTDOWN_ACK_SENT:
|
|
user_state = SCTP_SHUTDOWN_ACK_SENT;
|
|
break;
|
|
default:
|
|
user_state = SCTP_CLOSED;
|
|
break;
|
|
}
|
|
}
|
|
return (user_state);
|
|
}
|
|
|
|
int
|
|
sctp_init_asoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
|
|
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;
|
|
|
|
#if defined(SCTP_DETAILED_STR_STATS)
|
|
int j;
|
|
|
|
#endif
|
|
|
|
asoc = &stcb->asoc;
|
|
/* init all variables to a known value. */
|
|
SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_INUSE);
|
|
asoc->max_burst = inp->sctp_ep.max_burst;
|
|
asoc->fr_max_burst = inp->sctp_ep.fr_max_burst;
|
|
asoc->heart_beat_delay = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]);
|
|
asoc->cookie_life = inp->sctp_ep.def_cookie_life;
|
|
asoc->sctp_cmt_on_off = inp->sctp_cmt_on_off;
|
|
asoc->ecn_supported = inp->ecn_supported;
|
|
asoc->prsctp_supported = inp->prsctp_supported;
|
|
asoc->auth_supported = inp->auth_supported;
|
|
asoc->asconf_supported = inp->asconf_supported;
|
|
asoc->reconfig_supported = inp->reconfig_supported;
|
|
asoc->nrsack_supported = inp->nrsack_supported;
|
|
asoc->pktdrop_supported = inp->pktdrop_supported;
|
|
asoc->sctp_cmt_pf = (uint8_t) 0;
|
|
asoc->sctp_frag_point = inp->sctp_frag_point;
|
|
asoc->sctp_features = inp->sctp_features;
|
|
asoc->default_dscp = inp->sctp_ep.default_dscp;
|
|
asoc->max_cwnd = inp->max_cwnd;
|
|
#ifdef INET6
|
|
if (inp->sctp_ep.default_flowlabel) {
|
|
asoc->default_flowlabel = inp->sctp_ep.default_flowlabel;
|
|
} else {
|
|
if (inp->ip_inp.inp.inp_flags & IN6P_AUTOFLOWLABEL) {
|
|
asoc->default_flowlabel = sctp_select_initial_TSN(&inp->sctp_ep);
|
|
asoc->default_flowlabel &= 0x000fffff;
|
|
asoc->default_flowlabel |= 0x80000000;
|
|
} else {
|
|
asoc->default_flowlabel = 0;
|
|
}
|
|
}
|
|
#endif
|
|
asoc->sb_send_resv = 0;
|
|
if (override_tag) {
|
|
asoc->my_vtag = override_tag;
|
|
} else {
|
|
asoc->my_vtag = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 1);
|
|
}
|
|
/* Get the nonce tags */
|
|
asoc->my_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
|
|
asoc->peer_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
|
|
asoc->vrf_id = vrf_id;
|
|
|
|
#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(&inp->sctp_ep);
|
|
asoc->asconf_seq_out_acked = asoc->asconf_seq_out - 1;
|
|
/* we are optimisitic here */
|
|
asoc->peer_supports_nat = 0;
|
|
asoc->sent_queue_retran_cnt = 0;
|
|
|
|
/* for CMT */
|
|
asoc->last_net_cmt_send_started = NULL;
|
|
|
|
/* This will need to be adjusted */
|
|
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 = inp->sctp_ep.initial_init_rto_max;
|
|
asoc->initial_rto = inp->sctp_ep.initial_rto;
|
|
|
|
asoc->max_init_times = inp->sctp_ep.max_init_times;
|
|
asoc->max_send_times = inp->sctp_ep.max_send_times;
|
|
asoc->def_net_failure = inp->sctp_ep.def_net_failure;
|
|
asoc->def_net_pf_threshold = inp->sctp_ep.def_net_pf_threshold;
|
|
asoc->free_chunk_cnt = 0;
|
|
|
|
asoc->iam_blocking = 0;
|
|
asoc->context = inp->sctp_context;
|
|
asoc->local_strreset_support = inp->local_strreset_support;
|
|
asoc->def_send = inp->def_send;
|
|
asoc->delayed_ack = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
|
|
asoc->sack_freq = inp->sctp_ep.sctp_sack_freq;
|
|
asoc->pr_sctp_cnt = 0;
|
|
asoc->total_output_queue_size = 0;
|
|
|
|
if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
|
|
asoc->scope.ipv6_addr_legal = 1;
|
|
if (SCTP_IPV6_V6ONLY(inp) == 0) {
|
|
asoc->scope.ipv4_addr_legal = 1;
|
|
} else {
|
|
asoc->scope.ipv4_addr_legal = 0;
|
|
}
|
|
} else {
|
|
asoc->scope.ipv6_addr_legal = 0;
|
|
asoc->scope.ipv4_addr_legal = 1;
|
|
}
|
|
|
|
asoc->my_rwnd = max(SCTP_SB_LIMIT_RCV(inp->sctp_socket), SCTP_MINIMAL_RWND);
|
|
asoc->peers_rwnd = SCTP_SB_LIMIT_RCV(inp->sctp_socket);
|
|
|
|
asoc->smallest_mtu = inp->sctp_frag_point;
|
|
asoc->minrto = inp->sctp_ep.sctp_minrto;
|
|
asoc->maxrto = inp->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 = inp->sctp_ep.auto_close_time;
|
|
|
|
stcb->asoc.congestion_control_module = inp->sctp_ep.sctp_default_cc_module;
|
|
stcb->asoc.cc_functions = sctp_cc_functions[inp->sctp_ep.sctp_default_cc_module];
|
|
|
|
stcb->asoc.stream_scheduling_module = inp->sctp_ep.sctp_default_ss_module;
|
|
stcb->asoc.ss_functions = sctp_ss_functions[inp->sctp_ep.sctp_default_ss_module];
|
|
|
|
/*
|
|
* 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 =
|
|
inp->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_send = 0x0;
|
|
TAILQ_INIT(&asoc->strmout[i].outqueue);
|
|
asoc->strmout[i].chunks_on_queues = 0;
|
|
#if defined(SCTP_DETAILED_STR_STATS)
|
|
for (j = 0; j < SCTP_PR_SCTP_MAX + 1; j++) {
|
|
asoc->strmout[i].abandoned_sent[j] = 0;
|
|
asoc->strmout[i].abandoned_unsent[j] = 0;
|
|
}
|
|
#else
|
|
asoc->strmout[i].abandoned_sent[0] = 0;
|
|
asoc->strmout[i].abandoned_unsent[0] = 0;
|
|
#endif
|
|
asoc->strmout[i].stream_no = i;
|
|
asoc->strmout[i].last_msg_incomplete = 0;
|
|
asoc->strmout[i].state = SCTP_STREAM_OPENING;
|
|
asoc->ss_functions.sctp_ss_init_stream(&asoc->strmout[i], NULL);
|
|
}
|
|
asoc->ss_functions.sctp_ss_init(stcb, asoc, 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);
|
|
SCTP_MALLOC(asoc->nr_mapping_array, uint8_t *, asoc->mapping_array_size,
|
|
SCTP_M_MAP);
|
|
if (asoc->nr_mapping_array == NULL) {
|
|
SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
|
|
SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
|
|
SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
|
|
return (ENOMEM);
|
|
}
|
|
memset(asoc->nr_mapping_array, 0, asoc->mapping_array_size);
|
|
|
|
/* Now the init of the other outqueues */
|
|
TAILQ_INIT(&asoc->free_chunks);
|
|
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 = inp->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->port = inp->sctp_ep.port;
|
|
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;
|
|
for (i = 0; i < SCTP_PR_SCTP_MAX + 1; i++) {
|
|
asoc->abandoned_unsent[i] = 0;
|
|
asoc->abandoned_sent[i] = 0;
|
|
}
|
|
/*
|
|
* sa_ignore MEMLEAK {memory is put in the assoc mapping array and
|
|
* freed later when the association is freed.
|
|
*/
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
sctp_print_mapping_array(struct sctp_association *asoc)
|
|
{
|
|
unsigned int i, limit;
|
|
|
|
SCTP_PRINTF("Mapping array size: %d, baseTSN: %8.8x, cumAck: %8.8x, highestTSN: (%8.8x, %8.8x).\n",
|
|
asoc->mapping_array_size,
|
|
asoc->mapping_array_base_tsn,
|
|
asoc->cumulative_tsn,
|
|
asoc->highest_tsn_inside_map,
|
|
asoc->highest_tsn_inside_nr_map);
|
|
for (limit = asoc->mapping_array_size; limit > 1; limit--) {
|
|
if (asoc->mapping_array[limit - 1] != 0) {
|
|
break;
|
|
}
|
|
}
|
|
SCTP_PRINTF("Renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
|
|
for (i = 0; i < limit; i++) {
|
|
SCTP_PRINTF("%2.2x%c", asoc->mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
|
|
}
|
|
if (limit % 16)
|
|
SCTP_PRINTF("\n");
|
|
for (limit = asoc->mapping_array_size; limit > 1; limit--) {
|
|
if (asoc->nr_mapping_array[limit - 1]) {
|
|
break;
|
|
}
|
|
}
|
|
SCTP_PRINTF("Non renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
|
|
for (i = 0; i < limit; i++) {
|
|
SCTP_PRINTF("%2.2x%c", asoc->nr_mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
|
|
}
|
|
if (limit % 16)
|
|
SCTP_PRINTF("\n");
|
|
}
|
|
|
|
int
|
|
sctp_expand_mapping_array(struct sctp_association *asoc, uint32_t needed)
|
|
{
|
|
/* mapping array needs to grow */
|
|
uint8_t *new_array1, *new_array2;
|
|
uint32_t new_size;
|
|
|
|
new_size = asoc->mapping_array_size + ((needed + 7) / 8 + SCTP_MAPPING_ARRAY_INCR);
|
|
SCTP_MALLOC(new_array1, uint8_t *, new_size, SCTP_M_MAP);
|
|
SCTP_MALLOC(new_array2, uint8_t *, new_size, SCTP_M_MAP);
|
|
if ((new_array1 == NULL) || (new_array2 == NULL)) {
|
|
/* can't get more, forget it */
|
|
SCTP_PRINTF("No memory for expansion of SCTP mapping array %d\n", new_size);
|
|
if (new_array1) {
|
|
SCTP_FREE(new_array1, SCTP_M_MAP);
|
|
}
|
|
if (new_array2) {
|
|
SCTP_FREE(new_array2, SCTP_M_MAP);
|
|
}
|
|
return (-1);
|
|
}
|
|
memset(new_array1, 0, new_size);
|
|
memset(new_array2, 0, new_size);
|
|
memcpy(new_array1, asoc->mapping_array, asoc->mapping_array_size);
|
|
memcpy(new_array2, asoc->nr_mapping_array, asoc->mapping_array_size);
|
|
SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
|
|
SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
|
|
asoc->mapping_array = new_array1;
|
|
asoc->nr_mapping_array = new_array2;
|
|
asoc->mapping_array_size = new_size;
|
|
return (0);
|
|
}
|
|
|
|
|
|
static void
|
|
sctp_iterator_work(struct sctp_iterator *it)
|
|
{
|
|
int iteration_count = 0;
|
|
int inp_skip = 0;
|
|
int first_in = 1;
|
|
struct sctp_inpcb *tinp;
|
|
|
|
SCTP_INP_INFO_RLOCK();
|
|
SCTP_ITERATOR_LOCK();
|
|
if (it->inp) {
|
|
SCTP_INP_RLOCK(it->inp);
|
|
SCTP_INP_DECR_REF(it->inp);
|
|
}
|
|
if (it->inp == NULL) {
|
|
/* iterator is complete */
|
|
done_with_iterator:
|
|
SCTP_ITERATOR_UNLOCK();
|
|
SCTP_INP_INFO_RUNLOCK();
|
|
if (it->function_atend != NULL) {
|
|
(*it->function_atend) (it->pointer, it->val);
|
|
}
|
|
SCTP_FREE(it, SCTP_M_ITER);
|
|
return;
|
|
}
|
|
select_a_new_ep:
|
|
if (first_in) {
|
|
first_in = 0;
|
|
} else {
|
|
SCTP_INP_RLOCK(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_RUNLOCK(it->inp);
|
|
goto done_with_iterator;
|
|
}
|
|
tinp = it->inp;
|
|
it->inp = LIST_NEXT(it->inp, sctp_list);
|
|
SCTP_INP_RUNLOCK(tinp);
|
|
if (it->inp == NULL) {
|
|
goto done_with_iterator;
|
|
}
|
|
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_INP_INFO_RUNLOCK();
|
|
SCTP_INP_INFO_RLOCK();
|
|
SCTP_ITERATOR_LOCK();
|
|
if (sctp_it_ctl.iterator_flags) {
|
|
/* We won't be staying here */
|
|
SCTP_INP_DECR_REF(it->inp);
|
|
atomic_add_int(&it->stcb->asoc.refcnt, -1);
|
|
if (sctp_it_ctl.iterator_flags &
|
|
SCTP_ITERATOR_STOP_CUR_IT) {
|
|
sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_IT;
|
|
goto done_with_iterator;
|
|
}
|
|
if (sctp_it_ctl.iterator_flags &
|
|
SCTP_ITERATOR_STOP_CUR_INP) {
|
|
sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_INP;
|
|
goto no_stcb;
|
|
}
|
|
/* If we reach here huh? */
|
|
SCTP_PRINTF("Unknown it ctl flag %x\n",
|
|
sctp_it_ctl.iterator_flags);
|
|
sctp_it_ctl.iterator_flags = 0;
|
|
}
|
|
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;
|
|
if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
|
|
it->inp = NULL;
|
|
} else {
|
|
it->inp = LIST_NEXT(it->inp, sctp_list);
|
|
}
|
|
if (it->inp == NULL) {
|
|
goto done_with_iterator;
|
|
}
|
|
goto select_a_new_ep;
|
|
}
|
|
|
|
void
|
|
sctp_iterator_worker(void)
|
|
{
|
|
struct sctp_iterator *it, *nit;
|
|
|
|
/* This function is called with the WQ lock in place */
|
|
|
|
sctp_it_ctl.iterator_running = 1;
|
|
TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
|
|
sctp_it_ctl.cur_it = it;
|
|
/* now lets work on this one */
|
|
TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
|
|
SCTP_IPI_ITERATOR_WQ_UNLOCK();
|
|
CURVNET_SET(it->vn);
|
|
sctp_iterator_work(it);
|
|
sctp_it_ctl.cur_it = NULL;
|
|
CURVNET_RESTORE();
|
|
SCTP_IPI_ITERATOR_WQ_LOCK();
|
|
/* sa_ignore FREED_MEMORY */
|
|
}
|
|
sctp_it_ctl.iterator_running = 0;
|
|
return;
|
|
}
|
|
|
|
|
|
static void
|
|
sctp_handle_addr_wq(void)
|
|
{
|
|
/* deal with the ADDR wq from the rtsock calls */
|
|
struct sctp_laddr *wi, *nwi;
|
|
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_WQ_ADDR_LOCK();
|
|
LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
|
|
LIST_REMOVE(wi, sctp_nxt_addr);
|
|
LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr);
|
|
asc->cnt++;
|
|
}
|
|
SCTP_WQ_ADDR_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);
|
|
}
|
|
}
|
|
|
|
void
|
|
sctp_timeout_handler(void *t)
|
|
{
|
|
struct sctp_inpcb *inp;
|
|
struct sctp_tcb *stcb;
|
|
struct sctp_nets *net;
|
|
struct sctp_timer *tmr;
|
|
struct mbuf *op_err;
|
|
|
|
#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
|
|
struct socket *so;
|
|
|
|
#endif
|
|
int did_output;
|
|
|
|
tmr = (struct sctp_timer *)t;
|
|
inp = (struct sctp_inpcb *)tmr->ep;
|
|
stcb = (struct sctp_tcb *)tmr->tcb;
|
|
net = (struct sctp_nets *)tmr->net;
|
|
CURVNET_SET((struct vnet *)tmr->vnet);
|
|
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",
|
|
* (void *)tmr);
|
|
*/
|
|
CURVNET_RESTORE();
|
|
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);
|
|
*/
|
|
CURVNET_RESTORE();
|
|
return;
|
|
}
|
|
tmr->stopped_from = 0xa002;
|
|
if ((tmr->type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL)) {
|
|
CURVNET_RESTORE();
|
|
return;
|
|
}
|
|
/* if this is an iterator timeout, get the struct and clear inp */
|
|
tmr->stopped_from = 0xa003;
|
|
if (inp) {
|
|
SCTP_INP_INCR_REF(inp);
|
|
if ((inp->sctp_socket == NULL) &&
|
|
((tmr->type != SCTP_TIMER_TYPE_INPKILL) &&
|
|
(tmr->type != SCTP_TIMER_TYPE_INIT) &&
|
|
(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);
|
|
CURVNET_RESTORE();
|
|
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);
|
|
}
|
|
CURVNET_RESTORE();
|
|
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);
|
|
}
|
|
CURVNET_RESTORE();
|
|
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);
|
|
}
|
|
CURVNET_RESTORE();
|
|
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_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);
|
|
if (sctp_t3rxt_timer(inp, stcb, net)) {
|
|
/* 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;
|
|
}
|
|
SCTP_STAT_INCR(sctps_timosack);
|
|
stcb->asoc.timosack++;
|
|
sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
|
|
#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:
|
|
if ((stcb == NULL) || (inp == NULL) || (net == NULL)) {
|
|
break;
|
|
}
|
|
SCTP_STAT_INCR(sctps_timoheartbeat);
|
|
stcb->asoc.timoheartbeat++;
|
|
if (sctp_heartbeat_timer(inp, stcb, net)) {
|
|
/* no need to unlock on tcb its gone */
|
|
goto out_decr;
|
|
}
|
|
#ifdef SCTP_AUDITING_ENABLED
|
|
sctp_auditing(4, inp, stcb, net);
|
|
#endif
|
|
if (!(net->dest_state & SCTP_ADDR_NOHB)) {
|
|
sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
|
|
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);
|
|
op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
|
|
"Shutdown guard timer expired");
|
|
sctp_abort_an_association(inp, stcb, op_err, 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_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_FROM_INPKILL_TIMER);
|
|
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",
|
|
tmr->type);
|
|
CURVNET_RESTORE();
|
|
}
|
|
|
|
void
|
|
sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
|
|
struct sctp_nets *net)
|
|
{
|
|
uint32_t to_ticks;
|
|
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;
|
|
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_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 ((stcb == NULL) || (net == NULL)) {
|
|
return;
|
|
} else {
|
|
uint32_t rndval;
|
|
uint32_t jitter;
|
|
|
|
if ((net->dest_state & SCTP_ADDR_NOHB) &&
|
|
!(net->dest_state & SCTP_ADDR_UNCONFIRMED)) {
|
|
return;
|
|
}
|
|
if (net->RTO == 0) {
|
|
to_ticks = stcb->asoc.initial_rto;
|
|
} else {
|
|
to_ticks = net->RTO;
|
|
}
|
|
rndval = sctp_select_initial_TSN(&inp->sctp_ep);
|
|
jitter = rndval % to_ticks;
|
|
if (jitter >= (to_ticks >> 1)) {
|
|
to_ticks = to_ticks + (jitter - (to_ticks >> 1));
|
|
} else {
|
|
to_ticks = to_ticks - jitter;
|
|
}
|
|
if (!(net->dest_state & SCTP_ADDR_UNCONFIRMED) &&
|
|
!(net->dest_state & SCTP_ADDR_PF)) {
|
|
to_ticks += net->heart_beat_delay;
|
|
}
|
|
/*
|
|
* Now we must convert the to_ticks that are now in
|
|
* ms to ticks.
|
|
*/
|
|
to_ticks = MSEC_TO_TICKS(to_ticks);
|
|
tmr = &net->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.
|
|
*/
|
|
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.
|
|
*/
|
|
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) || (net == NULL)) {
|
|
return;
|
|
}
|
|
if (net->dest_state & SCTP_ADDR_NO_PMTUD) {
|
|
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 (stcb == NULL) {
|
|
return;
|
|
}
|
|
if (inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] == 0) {
|
|
to_ticks = 5 * MSEC_TO_TICKS(stcb->asoc.maxrto);
|
|
} else {
|
|
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_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, (void *)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->vnet = (void *)curvnet;
|
|
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_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) || (net == NULL)) {
|
|
return;
|
|
}
|
|
tmr = &net->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;
|
|
|
|
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, int rtt_from_sack)
|
|
{
|
|
/*-
|
|
* given an association and the starting time of the current RTT
|
|
* period (in value1/value2) return RTO in number of msecs.
|
|
*/
|
|
int32_t rtt; /* RTT in ms */
|
|
uint32_t new_rto;
|
|
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 */
|
|
if (stcb->asoc.use_precise_time) {
|
|
(void)SCTP_GETPTIME_TIMEVAL(&now);
|
|
} else {
|
|
(void)SCTP_GETTIME_TIMEVAL(&now);
|
|
}
|
|
timevalsub(&now, old);
|
|
/* store the current RTT in us */
|
|
net->rtt = (uint64_t) 1000000 *(uint64_t) now.tv_sec +
|
|
(uint64_t) now.tv_usec;
|
|
|
|
/* compute rtt in ms */
|
|
rtt = (int32_t) (net->rtt / 1000);
|
|
if ((asoc->cc_functions.sctp_rtt_calculated) && (rtt_from_sack == SCTP_RTT_FROM_DATA)) {
|
|
/*
|
|
* Tell the CC module that a new update has just occurred
|
|
* from a sack
|
|
*/
|
|
(*asoc->cc_functions.sctp_rtt_calculated) (stcb, net, &now);
|
|
}
|
|
/*
|
|
* Do we need to determine the lan? We do this only on sacks i.e.
|
|
* RTT being determined from data not non-data (HB/INIT->INITACK).
|
|
*/
|
|
if ((rtt_from_sack == SCTP_RTT_FROM_DATA) &&
|
|
(net->lan_type == SCTP_LAN_UNKNOWN)) {
|
|
if (net->rtt > SCTP_LOCAL_LAN_RTT) {
|
|
net->lan_type = SCTP_LAN_INTERNET;
|
|
} else {
|
|
net->lan_type = SCTP_LAN_LOCAL;
|
|
}
|
|
}
|
|
/***************************/
|
|
/* 2. update RTTVAR & SRTT */
|
|
/***************************/
|
|
/*-
|
|
* Compute the scaled average lastsa and the
|
|
* scaled variance lastsv as described in van Jacobson
|
|
* Paper "Congestion Avoidance and Control", Annex A.
|
|
*
|
|
* (net->lastsa >> SCTP_RTT_SHIFT) is the srtt
|
|
* (net->lastsa >> SCTP_RTT_VAR_SHIFT) is the rttvar
|
|
*/
|
|
if (net->RTO_measured) {
|
|
rtt -= (net->lastsa >> SCTP_RTT_SHIFT);
|
|
net->lastsa += rtt;
|
|
if (rtt < 0) {
|
|
rtt = -rtt;
|
|
}
|
|
rtt -= (net->lastsv >> SCTP_RTT_VAR_SHIFT);
|
|
net->lastsv += rtt;
|
|
if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
|
|
rto_logging(net, SCTP_LOG_RTTVAR);
|
|
}
|
|
} else {
|
|
/* First RTO measurment */
|
|
net->RTO_measured = 1;
|
|
first_measure = 1;
|
|
net->lastsa = rtt << SCTP_RTT_SHIFT;
|
|
net->lastsv = (rtt / 2) << SCTP_RTT_VAR_SHIFT;
|
|
if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
|
|
rto_logging(net, SCTP_LOG_INITIAL_RTT);
|
|
}
|
|
}
|
|
if (net->lastsv == 0) {
|
|
net->lastsv = SCTP_CLOCK_GRANULARITY;
|
|
}
|
|
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));
|
|
}
|
|
|
|
|
|
struct mbuf *
|
|
sctp_add_pad_tombuf(struct mbuf *m, int padlen)
|
|
{
|
|
struct mbuf *m_last;
|
|
caddr_t dp;
|
|
|
|
if (padlen > 3) {
|
|
return (NULL);
|
|
}
|
|
if (padlen <= M_TRAILINGSPACE(m)) {
|
|
/*
|
|
* The easy way. We hope the majority of the time we hit
|
|
* here :)
|
|
*/
|
|
m_last = m;
|
|
} else {
|
|
/* Hard way we must grow the mbuf chain */
|
|
m_last = sctp_get_mbuf_for_msg(padlen, 0, M_NOWAIT, 1, MT_DATA);
|
|
if (m_last == NULL) {
|
|
return (NULL);
|
|
}
|
|
SCTP_BUF_LEN(m_last) = 0;
|
|
SCTP_BUF_NEXT(m_last) = NULL;
|
|
SCTP_BUF_NEXT(m) = m_last;
|
|
}
|
|
dp = mtod(m_last, caddr_t)+SCTP_BUF_LEN(m_last);
|
|
SCTP_BUF_LEN(m_last) += padlen;
|
|
memset(dp, 0, padlen);
|
|
return (m_last);
|
|
}
|
|
|
|
struct mbuf *
|
|
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;
|
|
|
|
if (last_mbuf != NULL) {
|
|
return (sctp_add_pad_tombuf(last_mbuf, padval));
|
|
} else {
|
|
for (m_at = m; m_at; m_at = SCTP_BUF_NEXT(m_at)) {
|
|
if (SCTP_BUF_NEXT(m_at) == NULL) {
|
|
return (sctp_add_pad_tombuf(m_at, padval));
|
|
}
|
|
}
|
|
}
|
|
return (NULL);
|
|
}
|
|
|
|
static void
|
|
sctp_notify_assoc_change(uint16_t state, struct sctp_tcb *stcb,
|
|
uint16_t error, struct sctp_abort_chunk *abort, uint8_t from_peer, 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;
|
|
size_t notif_len, abort_len;
|
|
unsigned int i;
|
|
|
|
#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
|
|
struct socket *so;
|
|
|
|
#endif
|
|
|
|
if (stcb == NULL) {
|
|
return;
|
|
}
|
|
if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVASSOCEVNT)) {
|
|
notif_len = sizeof(struct sctp_assoc_change);
|
|
if (abort != NULL) {
|
|
abort_len = ntohs(abort->ch.chunk_length);
|
|
} else {
|
|
abort_len = 0;
|
|
}
|
|
if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
|
|
notif_len += SCTP_ASSOC_SUPPORTS_MAX;
|
|
} else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
|
|
notif_len += abort_len;
|
|
}
|
|
m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
|
|
if (m_notify == NULL) {
|
|
/* Retry with smaller value. */
|
|
notif_len = sizeof(struct sctp_assoc_change);
|
|
m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
|
|
if (m_notify == NULL) {
|
|
goto set_error;
|
|
}
|
|
}
|
|
SCTP_BUF_NEXT(m_notify) = NULL;
|
|
sac = mtod(m_notify, struct sctp_assoc_change *);
|
|
memset(sac, 0, notif_len);
|
|
sac->sac_type = SCTP_ASSOC_CHANGE;
|
|
sac->sac_flags = 0;
|
|
sac->sac_length = sizeof(struct sctp_assoc_change);
|
|
sac->sac_state = state;
|
|
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);
|
|
if (notif_len > sizeof(struct sctp_assoc_change)) {
|
|
if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
|
|
i = 0;
|
|
if (stcb->asoc.prsctp_supported == 1) {
|
|
sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_PR;
|
|
}
|
|
if (stcb->asoc.auth_supported == 1) {
|
|
sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_AUTH;
|
|
}
|
|
if (stcb->asoc.asconf_supported == 1) {
|
|
sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_ASCONF;
|
|
}
|
|
sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_MULTIBUF;
|
|
if (stcb->asoc.reconfig_supported == 1) {
|
|
sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_RE_CONFIG;
|
|
}
|
|
sac->sac_length += i;
|
|
} else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
|
|
memcpy(sac->sac_info, abort, abort_len);
|
|
sac->sac_length += abort_len;
|
|
}
|
|
}
|
|
SCTP_BUF_LEN(m_notify) = sac->sac_length;
|
|
control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
|
|
0, 0, stcb->asoc.context, 0, 0, 0,
|
|
m_notify);
|
|
if (control != NULL) {
|
|
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, SCTP_READ_LOCK_NOT_HELD,
|
|
so_locked);
|
|
} else {
|
|
sctp_m_freem(m_notify);
|
|
}
|
|
}
|
|
/*
|
|
* For 1-to-1 style sockets, we send up and error when an ABORT
|
|
* comes in.
|
|
*/
|
|
set_error:
|
|
if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
|
|
(stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
|
|
((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
|
|
SOCK_LOCK(stcb->sctp_socket);
|
|
if (from_peer) {
|
|
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;
|
|
}
|
|
} else {
|
|
if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) ||
|
|
(SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_ECHOED)) {
|
|
SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ETIMEDOUT);
|
|
stcb->sctp_socket->so_error = ETIMEDOUT;
|
|
} else {
|
|
SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNABORTED);
|
|
stcb->sctp_socket->so_error = ECONNABORTED;
|
|
}
|
|
}
|
|
}
|
|
/* 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
|
|
if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
|
|
(stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
|
|
((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
|
|
socantrcvmore_locked(stcb->sctp_socket);
|
|
}
|
|
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
|
|
}
|
|
|
|
static void
|
|
sctp_notify_peer_addr_change(struct sctp_tcb *stcb, uint32_t state,
|
|
struct sockaddr *sa, uint32_t error, int so_locked
|
|
#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
|
|
SCTP_UNUSED
|
|
#endif
|
|
)
|
|
{
|
|
struct mbuf *m_notify;
|
|
struct sctp_paddr_change *spc;
|
|
struct sctp_queued_to_read *control;
|
|
|
|
if ((stcb == NULL) ||
|
|
sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPADDREVNT)) {
|
|
/* event not enabled */
|
|
return;
|
|
}
|
|
m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_paddr_change), 0, M_NOWAIT, 1, MT_DATA);
|
|
if (m_notify == NULL)
|
|
return;
|
|
SCTP_BUF_LEN(m_notify) = 0;
|
|
spc = mtod(m_notify, struct sctp_paddr_change *);
|
|
memset(spc, 0, sizeof(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) {
|
|
#ifdef INET
|
|
case AF_INET:
|
|
#ifdef INET6
|
|
if (sctp_is_feature_on(stcb->sctp_ep, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
|
|
in6_sin_2_v4mapsin6((struct sockaddr_in *)sa,
|
|
(struct sockaddr_in6 *)&spc->spc_aaddr);
|
|
} else {
|
|
memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
|
|
}
|
|
#else
|
|
memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
|
|
#endif
|
|
break;
|
|
#endif
|
|
#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, stcb->asoc.context, 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_READ_LOCK_NOT_HELD,
|
|
so_locked);
|
|
}
|
|
|
|
|
|
static void
|
|
sctp_notify_send_failed(struct sctp_tcb *stcb, uint8_t sent, 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_send_failed_event *ssfe;
|
|
struct sctp_queued_to_read *control;
|
|
int length;
|
|
|
|
if ((stcb == NULL) ||
|
|
(sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
|
|
sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
|
|
/* event not enabled */
|
|
return;
|
|
}
|
|
if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
|
|
length = sizeof(struct sctp_send_failed_event);
|
|
} else {
|
|
length = sizeof(struct sctp_send_failed);
|
|
}
|
|
m_notify = sctp_get_mbuf_for_msg(length, 0, M_NOWAIT, 1, MT_DATA);
|
|
if (m_notify == NULL)
|
|
/* no space left */
|
|
return;
|
|
SCTP_BUF_LEN(m_notify) = 0;
|
|
if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
|
|
ssfe = mtod(m_notify, struct sctp_send_failed_event *);
|
|
memset(ssfe, 0, length);
|
|
ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
|
|
if (sent) {
|
|
ssfe->ssfe_flags = SCTP_DATA_SENT;
|
|
} else {
|
|
ssfe->ssfe_flags = SCTP_DATA_UNSENT;
|
|
}
|
|
length += chk->send_size;
|
|
length -= sizeof(struct sctp_data_chunk);
|
|
ssfe->ssfe_length = length;
|
|
ssfe->ssfe_error = error;
|
|
/* not exactly what the user sent in, but should be close :) */
|
|
ssfe->ssfe_info.snd_sid = chk->rec.data.stream_number;
|
|
ssfe->ssfe_info.snd_flags = chk->rec.data.rcv_flags;
|
|
ssfe->ssfe_info.snd_ppid = chk->rec.data.payloadtype;
|
|
ssfe->ssfe_info.snd_context = chk->rec.data.context;
|
|
ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
|
|
ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
|
|
SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed_event);
|
|
} else {
|
|
ssf = mtod(m_notify, struct sctp_send_failed *);
|
|
memset(ssf, 0, length);
|
|
ssf->ssf_type = SCTP_SEND_FAILED;
|
|
if (sent) {
|
|
ssf->ssf_flags = SCTP_DATA_SENT;
|
|
} else {
|
|
ssf->ssf_flags = SCTP_DATA_UNSENT;
|
|
}
|
|
length += chk->send_size;
|
|
length -= sizeof(struct sctp_data_chunk);
|
|
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_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);
|
|
}
|
|
}
|
|
SCTP_BUF_NEXT(m_notify) = chk->data;
|
|
/* 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, stcb->asoc.context, 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,
|
|
SCTP_READ_LOCK_NOT_HELD,
|
|
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_send_failed_event *ssfe;
|
|
struct sctp_queued_to_read *control;
|
|
int length;
|
|
|
|
if ((stcb == NULL) ||
|
|
(sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
|
|
sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
|
|
/* event not enabled */
|
|
return;
|
|
}
|
|
if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
|
|
length = sizeof(struct sctp_send_failed_event);
|
|
} else {
|
|
length = sizeof(struct sctp_send_failed);
|
|
}
|
|
m_notify = sctp_get_mbuf_for_msg(length, 0, M_NOWAIT, 1, MT_DATA);
|
|
if (m_notify == NULL) {
|
|
/* no space left */
|
|
return;
|
|
}
|
|
SCTP_BUF_LEN(m_notify) = 0;
|
|
if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
|
|
ssfe = mtod(m_notify, struct sctp_send_failed_event *);
|
|
memset(ssfe, 0, length);
|
|
ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
|
|
ssfe->ssfe_flags = SCTP_DATA_UNSENT;
|
|
length += sp->length;
|
|
ssfe->ssfe_length = length;
|
|
ssfe->ssfe_error = error;
|
|
/* not exactly what the user sent in, but should be close :) */
|
|
ssfe->ssfe_info.snd_sid = sp->stream;
|
|
if (sp->some_taken) {
|
|
ssfe->ssfe_info.snd_flags = SCTP_DATA_LAST_FRAG;
|
|
} else {
|
|
ssfe->ssfe_info.snd_flags = SCTP_DATA_NOT_FRAG;
|
|
}
|
|
ssfe->ssfe_info.snd_ppid = sp->ppid;
|
|
ssfe->ssfe_info.snd_context = sp->context;
|
|
ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
|
|
ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
|
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SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed_event);
|
|
} else {
|
|
ssf = mtod(m_notify, struct sctp_send_failed *);
|
|
memset(ssf, 0, length);
|
|
ssf->ssf_type = SCTP_SEND_FAILED;
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ssf->ssf_flags = SCTP_DATA_UNSENT;
|
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length += sp->length;
|
|
ssf->ssf_length = length;
|
|
ssf->ssf_error = error;
|
|
/* not exactly what the user sent in, but should be close :) */
|
|
ssf->ssf_info.sinfo_stream = sp->stream;
|
|
ssf->ssf_info.sinfo_ssn = 0;
|
|
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_LEN(m_notify) = sizeof(struct sctp_send_failed);
|
|
}
|
|
SCTP_BUF_NEXT(m_notify) = sp->data;
|
|
|
|
/* 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, stcb->asoc.context, 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, SCTP_READ_LOCK_NOT_HELD, so_locked);
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
sctp_notify_adaptation_layer(struct sctp_tcb *stcb)
|
|
{
|
|
struct mbuf *m_notify;
|
|
struct sctp_adaptation_event *sai;
|
|
struct sctp_queued_to_read *control;
|
|
|
|
if ((stcb == NULL) ||
|
|
sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ADAPTATIONEVNT)) {
|
|
/* event not enabled */
|
|
return;
|
|
}
|
|
m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_adaption_event), 0, M_NOWAIT, 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 *);
|
|
memset(sai, 0, sizeof(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, stcb->asoc.context, 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_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
|
|
}
|
|
|
|
/* This always must be called with the read-queue LOCKED in the INP */
|
|
static void
|
|
sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, uint32_t error,
|
|
uint32_t val, int so_locked
|
|
#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
|
|
SCTP_UNUSED
|
|
#endif
|
|
)
|
|
{
|
|
struct mbuf *m_notify;
|
|
struct sctp_pdapi_event *pdapi;
|
|
struct sctp_queued_to_read *control;
|
|
struct sockbuf *sb;
|
|
|
|
if ((stcb == NULL) ||
|
|
sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_PDAPIEVNT)) {
|
|
/* event not enabled */
|
|
return;
|
|
}
|
|
if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
|
|
return;
|
|
}
|
|
m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_pdapi_event), 0, M_NOWAIT, 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 *);
|
|
memset(pdapi, 0, sizeof(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, stcb->asoc.context, 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;
|
|
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 (stcb->sctp_ep && stcb->sctp_socket) {
|
|
/* This should always be the case */
|
|
#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
|
|
struct socket *so;
|
|
|
|
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->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
|
|
SCTP_SOCKET_UNLOCK(so, 1);
|
|
return;
|
|
}
|
|
}
|
|
#endif
|
|
sctp_sorwakeup(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_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_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) {
|
|
/* event not enabled */
|
|
return;
|
|
}
|
|
m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_shutdown_event), 0, M_NOWAIT, 1, MT_DATA);
|
|
if (m_notify == NULL)
|
|
/* no space left */
|
|
return;
|
|
sse = mtod(m_notify, struct sctp_shutdown_event *);
|
|
memset(sse, 0, sizeof(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, stcb->asoc.context, 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_READ_LOCK_NOT_HELD, 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 ((stcb == NULL) ||
|
|
sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DRYEVNT)) {
|
|
/* event not enabled */
|
|
return;
|
|
}
|
|
m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_sender_dry_event), 0, M_NOWAIT, 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 *);
|
|
memset(event, 0, sizeof(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, stcb->asoc.context, 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_READ_LOCK_NOT_HELD, so_locked);
|
|
}
|
|
|
|
|
|
void
|
|
sctp_notify_stream_reset_add(struct sctp_tcb *stcb, uint16_t numberin, uint16_t numberout, int flag)
|
|
{
|
|
struct mbuf *m_notify;
|
|
struct sctp_queued_to_read *control;
|
|
struct sctp_stream_change_event *stradd;
|
|
|
|
if ((stcb == NULL) ||
|
|
(sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_CHANGEEVNT))) {
|
|
/* event not enabled */
|
|
return;
|
|
}
|
|
if ((stcb->asoc.peer_req_out) && flag) {
|
|
/* Peer made the request, don't tell the local user */
|
|
stcb->asoc.peer_req_out = 0;
|
|
return;
|
|
}
|
|
stcb->asoc.peer_req_out = 0;
|
|
m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_stream_change_event), 0, M_NOWAIT, 1, MT_DATA);
|
|
if (m_notify == NULL)
|
|
/* no space left */
|
|
return;
|
|
SCTP_BUF_LEN(m_notify) = 0;
|
|
stradd = mtod(m_notify, struct sctp_stream_change_event *);
|
|
memset(stradd, 0, sizeof(struct sctp_stream_change_event));
|
|
stradd->strchange_type = SCTP_STREAM_CHANGE_EVENT;
|
|
stradd->strchange_flags = flag;
|
|
stradd->strchange_length = sizeof(struct sctp_stream_change_event);
|
|
stradd->strchange_assoc_id = sctp_get_associd(stcb);
|
|
stradd->strchange_instrms = numberin;
|
|
stradd->strchange_outstrms = numberout;
|
|
SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_stream_change_event);
|
|
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, stcb->asoc.context, 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_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
|
|
}
|
|
|
|
void
|
|
sctp_notify_stream_reset_tsn(struct sctp_tcb *stcb, uint32_t sending_tsn, uint32_t recv_tsn, int flag)
|
|
{
|
|
struct mbuf *m_notify;
|
|
struct sctp_queued_to_read *control;
|
|
struct sctp_assoc_reset_event *strasoc;
|
|
|
|
if ((stcb == NULL) ||
|
|
(sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ASSOC_RESETEVNT))) {
|
|
/* event not enabled */
|
|
return;
|
|
}
|
|
m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_assoc_reset_event), 0, M_NOWAIT, 1, MT_DATA);
|
|
if (m_notify == NULL)
|
|
/* no space left */
|
|
return;
|
|
SCTP_BUF_LEN(m_notify) = 0;
|
|
strasoc = mtod(m_notify, struct sctp_assoc_reset_event *);
|
|
memset(strasoc, 0, sizeof(struct sctp_assoc_reset_event));
|
|
strasoc->assocreset_type = SCTP_ASSOC_RESET_EVENT;
|
|
strasoc->assocreset_flags = flag;
|
|
strasoc->assocreset_length = sizeof(struct sctp_assoc_reset_event);
|
|
strasoc->assocreset_assoc_id = sctp_get_associd(stcb);
|
|
strasoc->assocreset_local_tsn = sending_tsn;
|
|
strasoc->assocreset_remote_tsn = recv_tsn;
|
|
SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_assoc_reset_event);
|
|
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, stcb->asoc.context, 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_READ_LOCK_NOT_HELD, 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 ((stcb == NULL) ||
|
|
(sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_RESETEVNT))) {
|
|
/* event not enabled */
|
|
return;
|
|
}
|
|
m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 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 *);
|
|
memset(strreset, 0, len);
|
|
strreset->strreset_type = SCTP_STREAM_RESET_EVENT;
|
|
strreset->strreset_flags = flag;
|
|
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_stream_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, stcb->asoc.context, 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_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
|
|
}
|
|
|
|
|
|
static void
|
|
sctp_notify_remote_error(struct sctp_tcb *stcb, uint16_t error, struct sctp_error_chunk *chunk)
|
|
{
|
|
struct mbuf *m_notify;
|
|
struct sctp_remote_error *sre;
|
|
struct sctp_queued_to_read *control;
|
|
size_t notif_len, chunk_len;
|
|
|
|
if ((stcb == NULL) ||
|
|
sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPEERERR)) {
|
|
return;
|
|
}
|
|
if (chunk != NULL) {
|
|
chunk_len = ntohs(chunk->ch.chunk_length);
|
|
} else {
|
|
chunk_len = 0;
|
|
}
|
|
notif_len = sizeof(struct sctp_remote_error) + chunk_len;
|
|
m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
|
|
if (m_notify == NULL) {
|
|
/* Retry with smaller value. */
|
|
notif_len = sizeof(struct sctp_remote_error);
|
|
m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
|
|
if (m_notify == NULL) {
|
|
return;
|
|
}
|
|
}
|
|
SCTP_BUF_NEXT(m_notify) = NULL;
|
|
sre = mtod(m_notify, struct sctp_remote_error *);
|
|
memset(sre, 0, notif_len);
|
|
sre->sre_type = SCTP_REMOTE_ERROR;
|
|
sre->sre_flags = 0;
|
|
sre->sre_length = sizeof(struct sctp_remote_error);
|
|
sre->sre_error = error;
|
|
sre->sre_assoc_id = sctp_get_associd(stcb);
|
|
if (notif_len > sizeof(struct sctp_remote_error)) {
|
|
memcpy(sre->sre_data, chunk, chunk_len);
|
|
sre->sre_length += chunk_len;
|
|
}
|
|
SCTP_BUF_LEN(m_notify) = sre->sre_length;
|
|
control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
|
|
0, 0, stcb->asoc.context, 0, 0, 0,
|
|
m_notify);
|
|
if (control != NULL) {
|
|
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,
|
|
SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
|
|
} else {
|
|
sctp_m_freem(m_notify);
|
|
}
|
|
}
|
|
|
|
|
|
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->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, 0, so_locked);
|
|
stcb->asoc.assoc_up_sent = 1;
|
|
}
|
|
if (stcb->asoc.adaptation_needed && (stcb->asoc.adaptation_sent == 0)) {
|
|
sctp_notify_adaptation_layer(stcb);
|
|
}
|
|
if (stcb->asoc.auth_supported == 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, 0, 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, so_locked);
|
|
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, so_locked);
|
|
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, so_locked);
|
|
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_SENT_DG_FAIL:
|
|
sctp_notify_send_failed(stcb, 1, error,
|
|
(struct sctp_tmit_chunk *)data, so_locked);
|
|
break;
|
|
case SCTP_NOTIFY_UNSENT_DG_FAIL:
|
|
sctp_notify_send_failed(stcb, 0, 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, val, so_locked);
|
|
break;
|
|
}
|
|
case SCTP_NOTIFY_ASSOC_LOC_ABORTED:
|
|
if (((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, data, 0, so_locked);
|
|
} else {
|
|
sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 0, so_locked);
|
|
}
|
|
break;
|
|
case SCTP_NOTIFY_ASSOC_REM_ABORTED:
|
|
if (((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, data, 1, so_locked);
|
|
} else {
|
|
sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 1, so_locked);
|
|
}
|
|
break;
|
|
case SCTP_NOTIFY_ASSOC_RESTART:
|
|
sctp_notify_assoc_change(SCTP_RESTART, stcb, error, NULL, 0, so_locked);
|
|
if (stcb->asoc.auth_supported == 0) {
|
|
sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
|
|
NULL, so_locked);
|
|
}
|
|
break;
|
|
case SCTP_NOTIFY_STR_RESET_SEND:
|
|
sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STREAM_RESET_OUTGOING_SSN);
|
|
break;
|
|
case SCTP_NOTIFY_STR_RESET_RECV:
|
|
sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STREAM_RESET_INCOMING);
|
|
break;
|
|
case SCTP_NOTIFY_STR_RESET_FAILED_OUT:
|
|
sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
|
|
(SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_FAILED));
|
|
break;
|
|
case SCTP_NOTIFY_STR_RESET_DENIED_OUT:
|
|
sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
|
|
(SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_DENIED));
|
|
break;
|
|
case SCTP_NOTIFY_STR_RESET_FAILED_IN:
|
|
sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
|
|
(SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_FAILED));
|
|
break;
|
|
case SCTP_NOTIFY_STR_RESET_DENIED_IN:
|
|
sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
|
|
(SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_DENIED));
|
|
break;
|
|
case SCTP_NOTIFY_ASCONF_ADD_IP:
|
|
sctp_notify_peer_addr_change(stcb, SCTP_ADDR_ADDED, data,
|
|
error, so_locked);
|
|
break;
|
|
case SCTP_NOTIFY_ASCONF_DELETE_IP:
|
|
sctp_notify_peer_addr_change(stcb, SCTP_ADDR_REMOVED, data,
|
|
error, so_locked);
|
|
break;
|
|
case SCTP_NOTIFY_ASCONF_SET_PRIMARY:
|
|
sctp_notify_peer_addr_change(stcb, SCTP_ADDR_MADE_PRIM, data,
|
|
error, so_locked);
|
|
break;
|
|
case SCTP_NOTIFY_PEER_SHUTDOWN:
|
|
sctp_notify_shutdown_event(stcb);
|
|
break;
|
|
case SCTP_NOTIFY_AUTH_NEW_KEY:
|
|
sctp_notify_authentication(stcb, SCTP_AUTH_NEW_KEY, 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;
|
|
case SCTP_NOTIFY_REMOTE_ERROR:
|
|
sctp_notify_remote_error(stcb, error, data);
|
|
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, uint16_t error, 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, *nchk;
|
|
struct sctp_stream_queue_pending *sp, *nsp;
|
|
int i;
|
|
|
|
if (stcb == NULL) {
|
|
return;
|
|
}
|
|
asoc = &stcb->asoc;
|
|
if (asoc->state & SCTP_STATE_ABOUT_TO_BE_FREED) {
|
|
/* already being freed */
|
|
return;
|
|
}
|
|
if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
|
|
(stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
|
|
(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 */
|
|
TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
|
|
TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
|
|
asoc->sent_queue_cnt--;
|
|
if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
|
|
if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
|
|
asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
|
|
#ifdef INVARIANTS
|
|
} else {
|
|
panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
|
|
#endif
|
|
}
|
|
}
|
|
if (chk->data != NULL) {
|
|
sctp_free_bufspace(stcb, asoc, chk, 1);
|
|
sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
|
|
error, chk, so_locked);
|
|
if (chk->data) {
|
|
sctp_m_freem(chk->data);
|
|
chk->data = NULL;
|
|
}
|
|
}
|
|
sctp_free_a_chunk(stcb, chk, so_locked);
|
|
/* sa_ignore FREED_MEMORY */
|
|
}
|
|
/* pending send queue SHOULD be empty */
|
|
TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
|
|
TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
|
|
asoc->send_queue_cnt--;
|
|
if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
|
|
asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
|
|
#ifdef INVARIANTS
|
|
} else {
|
|
panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
|
|
#endif
|
|
}
|
|
if (chk->data != NULL) {
|
|
sctp_free_bufspace(stcb, asoc, chk, 1);
|
|
sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
|
|
error, chk, so_locked);
|
|
if (chk->data) {
|
|
sctp_m_freem(chk->data);
|
|
chk->data = NULL;
|
|
}
|
|
}
|
|
sctp_free_a_chunk(stcb, chk, so_locked);
|
|
/* sa_ignore FREED_MEMORY */
|
|
}
|
|
for (i = 0; i < asoc->streamoutcnt; i++) {
|
|
/* For each stream */
|
|
outs = &asoc->strmout[i];
|
|
/* clean up any sends there */
|
|
asoc->locked_on_sending = NULL;
|
|
TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
|
|
asoc->stream_queue_cnt--;
|
|
TAILQ_REMOVE(&outs->outqueue, sp, next);
|
|
sctp_free_spbufspace(stcb, asoc, sp);
|
|
if (sp->data) {
|
|
sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
|
|
error, (void *)sp, so_locked);
|
|
if (sp->data) {
|
|
sctp_m_freem(sp->data);
|
|
sp->data = NULL;
|
|
sp->tail_mbuf = NULL;
|
|
sp->length = 0;
|
|
}
|
|
}
|
|
if (sp->net) {
|
|
sctp_free_remote_addr(sp->net);
|
|
sp->net = NULL;
|
|
}
|
|
/* Free the chunk */
|
|
sctp_free_a_strmoq(stcb, sp, so_locked);
|
|
/* sa_ignore FREED_MEMORY */
|
|
}
|
|
}
|
|
|
|
if (holds_lock == 0) {
|
|
SCTP_TCB_SEND_UNLOCK(stcb);
|
|
}
|
|
}
|
|
|
|
void
|
|
sctp_abort_notification(struct sctp_tcb *stcb, uint8_t from_peer, uint16_t error,
|
|
struct sctp_abort_chunk *abort, 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_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;
|
|
}
|
|
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, error, 1, so_locked);
|
|
if (from_peer) {
|
|
sctp_ulp_notify(SCTP_NOTIFY_ASSOC_REM_ABORTED, stcb, error, abort, so_locked);
|
|
} else {
|
|
sctp_ulp_notify(SCTP_NOTIFY_ASSOC_LOC_ABORTED, stcb, error, abort, so_locked);
|
|
}
|
|
}
|
|
|
|
void
|
|
sctp_abort_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
|
|
struct mbuf *m, int iphlen,
|
|
struct sockaddr *src, struct sockaddr *dst,
|
|
struct sctphdr *sh, struct mbuf *op_err,
|
|
uint8_t mflowtype, uint32_t mflowid,
|
|
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, 0, NULL, 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, src, dst, sh, vtag, op_err,
|
|
mflowtype, mflowid, inp->fibnum,
|
|
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
|
|
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);
|
|
}
|
|
(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
|
|
}
|
|
}
|
|
|
|
#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,
|
|
struct mbuf *op_err,
|
|
int so_locked
|
|
#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
|
|
SCTP_UNUSED
|
|
#endif
|
|
)
|
|
{
|
|
#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_EMPTY(&inp->sctp_asoc_list)) {
|
|
sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
|
|
SCTP_CALLED_DIRECTLY_NOCMPSET);
|
|
}
|
|
}
|
|
return;
|
|
} else {
|
|
stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
|
|
}
|
|
/* notify the ulp */
|
|
if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
|
|
sctp_abort_notification(stcb, 0, 0, NULL, so_locked);
|
|
}
|
|
/* notify the peer */
|
|
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 sockaddr *src, struct sockaddr *dst,
|
|
struct sctphdr *sh, struct sctp_inpcb *inp,
|
|
struct mbuf *cause,
|
|
uint8_t mflowtype, uint32_t mflowid, uint16_t fibnum,
|
|
uint32_t vrf_id, uint16_t port)
|
|
{
|
|
struct sctp_chunkhdr *ch, chunk_buf;
|
|
unsigned int chk_length;
|
|
int contains_init_chunk;
|
|
|
|
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_EMPTY(&inp->sctp_asoc_list)) {
|
|
sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
|
|
SCTP_CALLED_DIRECTLY_NOCMPSET);
|
|
}
|
|
}
|
|
contains_init_chunk = 0;
|
|
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_INIT:
|
|
contains_init_chunk = 1;
|
|
break;
|
|
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(src, dst, sh,
|
|
mflowtype, mflowid, fibnum,
|
|
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);
|
|
}
|
|
if ((SCTP_BASE_SYSCTL(sctp_blackhole) == 0) ||
|
|
((SCTP_BASE_SYSCTL(sctp_blackhole) == 1) &&
|
|
(contains_init_chunk == 0))) {
|
|
sctp_send_abort(m, iphlen, src, dst, sh, 0, cause,
|
|
mflowtype, mflowid, fibnum,
|
|
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
|
|
#ifdef INET
|
|
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);
|
|
}
|
|
#endif
|
|
default:
|
|
/* we don't do these... */
|
|
return (0);
|
|
}
|
|
}
|
|
|
|
void
|
|
sctp_print_address(struct sockaddr *sa)
|
|
{
|
|
#ifdef INET6
|
|
char ip6buf[INET6_ADDRSTRLEN];
|
|
|
|
#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
|
|
#ifdef INET
|
|
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;
|
|
}
|
|
#endif
|
|
default:
|
|
SCTP_PRINTF("?\n");
|
|
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);
|
|
TAILQ_FOREACH_SAFE(control, &old_inp->read_queue, next, nctl) {
|
|
/* Pull off all for out target stcb */
|
|
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);
|
|
}
|
|
}
|
|
}
|
|
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 */
|
|
SCTP_INP_READ_LOCK(new_inp);
|
|
TAILQ_FOREACH_SAFE(control, &tmp_queue, next, nctl) {
|
|
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);
|
|
}
|
|
}
|
|
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 inp_read_lock_held,
|
|
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;
|
|
}
|
|
if (inp_read_lock_held == 0)
|
|
SCTP_INP_READ_LOCK(inp);
|
|
if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
|
|
sctp_free_remote_addr(control->whoFrom);
|
|
if (control->data) {
|
|
sctp_m_freem(control->data);
|
|
control->data = NULL;
|
|
}
|
|
SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), control);
|
|
if (inp_read_lock_held == 0)
|
|
SCTP_INP_READ_UNLOCK(inp);
|
|
return;
|
|
}
|
|
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?? */
|
|
sctp_free_remote_addr(control->whoFrom);
|
|
SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), control);
|
|
if (inp_read_lock_held == 0)
|
|
SCTP_INP_READ_UNLOCK(inp);
|
|
return;
|
|
}
|
|
if (end) {
|
|
control->end_added = 1;
|
|
}
|
|
TAILQ_INSERT_TAIL(&inp->read_queue, control, next);
|
|
if (inp_read_lock_held == 0)
|
|
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) {
|
|
if (stcb) {
|
|
atomic_add_int(&stcb->asoc.refcnt, 1);
|
|
SCTP_TCB_UNLOCK(stcb);
|
|
}
|
|
SCTP_SOCKET_LOCK(so, 1);
|
|
if (stcb) {
|
|
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 (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ)) {
|
|
SCTP_INP_READ_UNLOCK(inp);
|
|
return (0);
|
|
}
|
|
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);
|
|
if (stcb) {
|
|
atomic_add_int(&stcb->asoc.refcnt, 1);
|
|
SCTP_TCB_UNLOCK(stcb);
|
|
}
|
|
SCTP_SOCKET_LOCK(so, 1);
|
|
if (stcb) {
|
|
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_cause(uint16_t code, char *info)
|
|
{
|
|
struct mbuf *m;
|
|
struct sctp_gen_error_cause *cause;
|
|
size_t info_len, len;
|
|
|
|
if ((code == 0) || (info == NULL)) {
|
|
return (NULL);
|
|
}
|
|
info_len = strlen(info);
|
|
len = sizeof(struct sctp_paramhdr) + info_len;
|
|
m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
|
|
if (m != NULL) {
|
|
SCTP_BUF_LEN(m) = len;
|
|
cause = mtod(m, struct sctp_gen_error_cause *);
|
|
cause->code = htons(code);
|
|
cause->length = htons((uint16_t) len);
|
|
memcpy(cause->info, info, info_len);
|
|
}
|
|
return (m);
|
|
}
|
|
|
|
struct mbuf *
|
|
sctp_generate_no_user_data_cause(uint32_t tsn)
|
|
{
|
|
struct mbuf *m;
|
|
struct sctp_error_no_user_data *no_user_data_cause;
|
|
size_t len;
|
|
|
|
len = sizeof(struct sctp_error_no_user_data);
|
|
m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
|
|
if (m != NULL) {
|
|
SCTP_BUF_LEN(m) = len;
|
|
no_user_data_cause = mtod(m, struct sctp_error_no_user_data *);
|
|
no_user_data_cause->cause.code = htons(SCTP_CAUSE_NO_USER_DATA);
|
|
no_user_data_cause->cause.length = htons((uint16_t) len);
|
|
no_user_data_cause->tsn = tsn; /* tsn is passed in as NBO */
|
|
}
|
|
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,
|
|
uint8_t sent, int so_locked
|
|
#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
|
|
SCTP_UNUSED
|
|
#endif
|
|
)
|
|
{
|
|
struct sctp_stream_out *strq;
|
|
struct sctp_tmit_chunk *chk = NULL, *tp2;
|
|
struct sctp_stream_queue_pending *sp;
|
|
uint16_t stream = 0, seq = 0;
|
|
uint8_t foundeom = 0;
|
|
int ret_sz = 0;
|
|
int notdone;
|
|
int do_wakeup_routine = 0;
|
|
|
|
stream = tp1->rec.data.stream_number;
|
|
seq = tp1->rec.data.stream_seq;
|
|
if (sent || !(tp1->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG)) {
|
|
stcb->asoc.abandoned_sent[0]++;
|
|
stcb->asoc.abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
|
|
stcb->asoc.strmout[stream].abandoned_sent[0]++;
|
|
#if defined(SCTP_DETAILED_STR_STATS)
|
|
stcb->asoc.strmout[stream].abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
|
|
#endif
|
|
} else {
|
|
stcb->asoc.abandoned_unsent[0]++;
|
|
stcb->asoc.abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
|
|
stcb->asoc.strmout[stream].abandoned_unsent[0]++;
|
|
#if defined(SCTP_DETAILED_STR_STATS)
|
|
stcb->asoc.strmout[stream].abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
|
|
#endif
|
|
}
|
|
do {
|
|
ret_sz += tp1->book_size;
|
|
if (tp1->data != NULL) {
|
|
if (tp1->sent < SCTP_DATAGRAM_RESEND) {
|
|
sctp_flight_size_decrease(tp1);
|
|
sctp_total_flight_decrease(stcb, tp1);
|
|
}
|
|
sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
|
|
stcb->asoc.peers_rwnd += tp1->send_size;
|
|
stcb->asoc.peers_rwnd += SCTP_BASE_SYSCTL(sctp_peer_chunk_oh);
|
|
if (sent) {
|
|
sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
|
|
} else {
|
|
sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
|
|
}
|
|
if (tp1->data) {
|
|
sctp_m_freem(tp1->data);
|
|
tp1->data = NULL;
|
|
}
|
|
do_wakeup_routine = 1;
|
|
if (PR_SCTP_BUF_ENABLED(tp1->flags)) {
|
|
stcb->asoc.sent_queue_cnt_removeable--;
|
|
}
|
|
}
|
|
tp1->sent = SCTP_FORWARD_TSN_SKIP;
|
|
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) {
|
|
/*
|
|
* The multi-part message was scattered across the send and
|
|
* sent queue.
|
|
*/
|
|
TAILQ_FOREACH_SAFE(tp1, &stcb->asoc.send_queue, sctp_next, tp2) {
|
|
if ((tp1->rec.data.stream_number != stream) ||
|
|
(tp1->rec.data.stream_seq != seq)) {
|
|
break;
|
|
}
|
|
/*
|
|
* save to chk in case we have some on stream out
|
|
* queue. If so and we have an un-transmitted one we
|
|
* don't have to fudge the TSN.
|
|
*/
|
|
chk = tp1;
|
|
ret_sz += tp1->book_size;
|
|
sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
|
|
if (sent) {
|
|
sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
|
|
} else {
|
|
sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
|
|
}
|
|
if (tp1->data) {
|
|
sctp_m_freem(tp1->data);
|
|
tp1->data = NULL;
|
|
}
|
|
/* No flight involved here book the size to 0 */
|
|
tp1->book_size = 0;
|
|
if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
|
|
foundeom = 1;
|
|
}
|
|
do_wakeup_routine = 1;
|
|
tp1->sent = SCTP_FORWARD_TSN_SKIP;
|
|
TAILQ_REMOVE(&stcb->asoc.send_queue, tp1, sctp_next);
|
|
/*
|
|
* on to the sent queue so we can wait for it to be
|
|
* passed by.
|
|
*/
|
|
TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, tp1,
|
|
sctp_next);
|
|
stcb->asoc.send_queue_cnt--;
|
|
stcb->asoc.sent_queue_cnt++;
|
|
}
|
|
}
|
|
if (foundeom == 0) {
|
|
/*
|
|
* Still no eom found. That means there is stuff left on the
|
|
* stream out queue.. yuck.
|
|
*/
|
|
SCTP_TCB_SEND_LOCK(stcb);
|
|
strq = &stcb->asoc.strmout[stream];
|
|
sp = TAILQ_FIRST(&strq->outqueue);
|
|
if (sp != NULL) {
|
|
sp->discard_rest = 1;
|
|
/*
|
|
* We may need to put a chunk on the queue that
|
|
* holds the TSN that would have been sent with the
|
|
* LAST bit.
|
|
*/
|
|
if (chk == NULL) {
|
|
/* Yep, we have to */
|
|
sctp_alloc_a_chunk(stcb, chk);
|
|
if (chk == NULL) {
|
|
/*
|
|
* we are hosed. All we can do is
|
|
* nothing.. which will cause an
|
|
* abort if the peer is paying
|
|
* attention.
|
|
*/
|
|
goto oh_well;
|
|
}
|
|
memset(chk, 0, sizeof(*chk));
|
|
chk->rec.data.rcv_flags = SCTP_DATA_LAST_FRAG;
|
|
chk->sent = SCTP_FORWARD_TSN_SKIP;
|
|
chk->asoc = &stcb->asoc;
|
|
chk->rec.data.stream_seq = strq->next_sequence_send;
|
|
chk->rec.data.stream_number = sp->stream;
|
|
chk->rec.data.payloadtype = sp->ppid;
|
|
chk->rec.data.context = sp->context;
|
|
chk->flags = sp->act_flags;
|
|
chk->whoTo = NULL;
|
|
chk->rec.data.TSN_seq = atomic_fetchadd_int(&stcb->asoc.sending_seq, 1);
|
|
strq->chunks_on_queues++;
|
|
TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, chk, sctp_next);
|
|
stcb->asoc.sent_queue_cnt++;
|
|
stcb->asoc.pr_sctp_cnt++;
|
|
} else {
|
|
chk->rec.data.rcv_flags |= SCTP_DATA_LAST_FRAG;
|
|
}
|
|
strq->next_sequence_send++;
|
|
oh_well:
|
|
if (sp->data) {
|
|
/*
|
|
* Pull any data to free up the SB and allow
|
|
* sender to "add more" while we will throw
|
|
* away :-)
|
|
*/
|
|
sctp_free_spbufspace(stcb, &stcb->asoc, sp);
|
|
ret_sz += sp->length;
|
|
do_wakeup_routine = 1;
|
|
sp->some_taken = 1;
|
|
sctp_m_freem(sp->data);
|
|
sp->data = NULL;
|
|
sp->tail_mbuf = NULL;
|
|
sp->length = 0;
|
|
}
|
|
}
|
|
SCTP_TCB_SEND_UNLOCK(stcb);
|
|
}
|
|
if (do_wakeup_routine) {
|
|
#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
|
|
struct socket *so;
|
|
|
|
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
|
|
}
|
|
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;
|
|
#ifdef INET
|
|
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;
|
|
}
|
|
}
|
|
#endif
|
|
#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)
|
|
{
|
|
switch (addr->sa_family) {
|
|
#ifdef INET
|
|
case AF_INET:
|
|
{
|
|
struct sockaddr_in *sin;
|
|
|
|
sin = (struct sockaddr_in *)addr;
|
|
return (sin->sin_addr.s_addr ^ (sin->sin_addr.s_addr >> 16));
|
|
}
|
|
#endif
|
|
#ifdef INET6
|
|
case 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);
|
|
}
|
|
#endif
|
|
default:
|
|
break;
|
|
}
|
|
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) {
|
|
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 (addr->sa_family != sctp_ifap->address.sa.sa_family)
|
|
continue;
|
|
#ifdef INET
|
|
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;
|
|
}
|
|
}
|
|
#endif
|
|
#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);
|
|
sctp_send_sack(stcb, SCTP_SO_LOCKED);
|
|
|
|
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;
|
|
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));
|
|
if (error) {
|
|
goto release_unlocked;
|
|
}
|
|
sockbuf_lock = 1;
|
|
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) && (so->so_rcv.sb_cc == 0)) {
|
|
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) {
|
|
/* 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;
|
|
}
|
|
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;
|
|
}
|
|
}
|
|
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;
|
|
}
|
|
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;
|
|
}
|
|
}
|
|
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);
|
|
}
|
|
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) &&
|
|
(control->end_added == 1)) {
|
|
/*
|
|
* Do we also need to check for (control->pdapi_aborted ==
|
|
* 1)?
|
|
*/
|
|
if (hold_rlock == 0) {
|
|
hold_rlock = 1;
|
|
SCTP_INP_READ_LOCK(inp);
|
|
}
|
|
TAILQ_REMOVE(&inp->read_queue, control, next);
|
|
if (control->data) {
|
|
#ifdef INVARIANTS
|
|
panic("control->data not null but control->length == 0");
|
|
#else
|
|
SCTP_PRINTF("Strange, data left in the control buffer. Cleaning up.\n");
|
|
sctp_m_freem(control->data);
|
|
control->data = NULL;
|
|
#endif
|
|
}
|
|
if (control->aux_data) {
|
|
sctp_m_free(control->aux_data);
|
|
control->aux_data = NULL;
|
|
}
|
|
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
|
|
SCTP_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) ||
|
|
sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) {
|
|
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 > 0) && (from != NULL)) {
|
|
union sctp_sockstore store;
|
|
size_t len;
|
|
|
|
switch (control->whoFrom->ro._l_addr.sa.sa_family) {
|
|
#ifdef INET6
|
|
case AF_INET6:
|
|
len = sizeof(struct sockaddr_in6);
|
|
store.sin6 = control->whoFrom->ro._l_addr.sin6;
|
|
store.sin6.sin6_port = control->port_from;
|
|
break;
|
|
#endif
|
|
#ifdef INET
|
|
case AF_INET:
|
|
#ifdef INET6
|
|
if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
|
|
len = sizeof(struct sockaddr_in6);
|
|
in6_sin_2_v4mapsin6(&control->whoFrom->ro._l_addr.sin,
|
|
&store.sin6);
|
|
store.sin6.sin6_port = control->port_from;
|
|
} else {
|
|
len = sizeof(struct sockaddr_in);
|
|
store.sin = control->whoFrom->ro._l_addr.sin;
|
|
store.sin.sin_port = control->port_from;
|
|
}
|
|
#else
|
|
len = sizeof(struct sockaddr_in);
|
|
store.sin = control->whoFrom->ro._l_addr.sin;
|
|
store.sin.sin_port = control->port_from;
|
|
#endif
|
|
break;
|
|
#endif
|
|
default:
|
|
len = 0;
|
|
break;
|
|
}
|
|
memcpy(from, &store, min((size_t)fromlen, len));
|
|
#ifdef INET6
|
|
{
|
|
struct sockaddr_in6 lsa6, *from6;
|
|
|
|
from6 = (struct sockaddr_in6 *)from;
|
|
sctp_recover_scope_mac(from6, (&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->stcb != NULL) &&
|
|
((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);
|
|
}
|
|
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;
|
|
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 >= (uint32_t) 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->stcb != NULL) &&
|
|
((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) ||
|
|
sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO))) {
|
|
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);
|
|
}
|
|
if (hold_sblock) {
|
|
SOCKBUF_UNLOCK(&so->so_rcv);
|
|
}
|
|
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);
|
|
/* 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) {
|
|
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_WQ_ADDR_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_WQ_ADDR_UNLOCK();
|
|
sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
|
|
(struct sctp_inpcb *)NULL,
|
|
(struct sctp_tcb *)NULL,
|
|
(struct sctp_nets *)NULL);
|
|
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) &&
|
|
sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVRCVINFO) &&
|
|
sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) ||
|
|
(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;
|
|
}
|
|
|
|
if (filling_sinfo) {
|
|
memset(&sinfo, 0, sizeof(struct sctp_extrcvinfo));
|
|
}
|
|
error = sctp_sorecvmsg(so, uio, mp0, from, fromlen, flagsp,
|
|
(struct sctp_sndrcvinfo *)&sinfo, filling_sinfo);
|
|
if (controlp != NULL) {
|
|
/* 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_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;
|
|
|
|
#ifdef INET
|
|
struct sockaddr_in *sin;
|
|
|
|
#endif
|
|
#ifdef INET6
|
|
struct sockaddr_in6 *sin6;
|
|
|
|
#endif
|
|
|
|
sa = addr;
|
|
inp = stcb->sctp_ep;
|
|
*error = 0;
|
|
for (i = 0; i < totaddr; i++) {
|
|
switch (sa->sa_family) {
|
|
#ifdef INET
|
|
case AF_INET:
|
|
incr = sizeof(struct sockaddr_in);
|
|
sin = (struct sockaddr_in *)sa;
|
|
if ((sin->sin_addr.s_addr == INADDR_ANY) ||
|
|
(sin->sin_addr.s_addr == INADDR_BROADCAST) ||
|
|
IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
|
|
SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
|
|
(void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
|
|
SCTP_FROM_SCTPUTIL + SCTP_LOC_7);
|
|
*error = EINVAL;
|
|
goto out_now;
|
|
}
|
|
if (sctp_add_remote_addr(stcb, sa, NULL, 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_SCTPUTIL + SCTP_LOC_8);
|
|
*error = ENOBUFS;
|
|
goto out_now;
|
|
}
|
|
added++;
|
|
break;
|
|
#endif
|
|
#ifdef INET6
|
|
case AF_INET6:
|
|
incr = sizeof(struct sockaddr_in6);
|
|
sin6 = (struct sockaddr_in6 *)sa;
|
|
if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
|
|
IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
|
|
SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
|
|
(void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
|
|
SCTP_FROM_SCTPUTIL + SCTP_LOC_9);
|
|
*error = EINVAL;
|
|
goto out_now;
|
|
}
|
|
if (sctp_add_remote_addr(stcb, sa, NULL, 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_SCTPUTIL + SCTP_LOC_10);
|
|
*error = ENOBUFS;
|
|
goto out_now;
|
|
}
|
|
added++;
|
|
break;
|
|
#endif
|
|
default:
|
|
break;
|
|
}
|
|
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++) {
|
|
switch (sa->sa_family) {
|
|
#ifdef INET
|
|
case 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);
|
|
}
|
|
break;
|
|
#endif
|
|
#ifdef INET6
|
|
case 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);
|
|
}
|
|
break;
|
|
}
|
|
#endif
|
|
default:
|
|
*totaddr = i;
|
|
/* we are done */
|
|
break;
|
|
}
|
|
if (i == (size_t)*totaddr) {
|
|
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;
|
|
|
|
#if defined(INET) && defined(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;
|
|
#ifdef INET6
|
|
if (sa->sa_family == AF_INET6) {
|
|
#ifdef INET
|
|
struct sockaddr_in6 *sin6;
|
|
|
|
#endif
|
|
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;
|
|
}
|
|
#ifdef INET
|
|
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
|
|
}
|
|
#endif
|
|
#ifdef INET
|
|
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;
|
|
}
|
|
}
|
|
#endif
|
|
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 sctp_inpcb *inp,
|
|
struct sockaddr *sa, sctp_assoc_t assoc_id,
|
|
uint32_t vrf_id, int *error)
|
|
{
|
|
struct sockaddr *addr_touse;
|
|
|
|
#if defined(INET) && defined(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;
|
|
#ifdef INET6
|
|
if (sa->sa_family == AF_INET6) {
|
|
#ifdef INET
|
|
struct sockaddr_in6 *sin6;
|
|
|
|
#endif
|
|
|
|
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;
|
|
}
|
|
#ifdef INET
|
|
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
|
|
}
|
|
#endif
|
|
#ifdef INET
|
|
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;
|
|
}
|
|
}
|
|
#endif
|
|
/*
|
|
* 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;
|
|
|
|
#if defined(INET)
|
|
int ipv4_local_scope, ipv4_addr_legal;
|
|
|
|
#endif
|
|
#if defined (INET6)
|
|
int local_scope, site_scope, ipv6_addr_legal;
|
|
|
|
#endif
|
|
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.scope.loopback_scope;
|
|
#if defined(INET)
|
|
ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
|
|
ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
|
|
#endif
|
|
#if defined(INET6)
|
|
local_scope = stcb->asoc.scope.local_scope;
|
|
site_scope = stcb->asoc.scope.site_scope;
|
|
ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
|
|
#endif
|
|
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) {
|
|
#ifdef INET
|
|
case AF_INET:
|
|
if (ipv4_addr_legal) {
|
|
struct sockaddr_in *sin;
|
|
|
|
sin = &sctp_ifa->address.sin;
|
|
if (sin->sin_addr.s_addr == 0) {
|
|
/*
|
|
* skip unspecified
|
|
* addrs
|
|
*/
|
|
continue;
|
|
}
|
|
if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
|
|
&sin->sin_addr) != 0) {
|
|
continue;
|
|
}
|
|
if ((ipv4_local_scope == 0) &&
|
|
(IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
|
|
continue;
|
|
}
|
|
/* count this one */
|
|
count++;
|
|
} else {
|
|
continue;
|
|
}
|
|
break;
|
|
#endif
|
|
#ifdef INET6
|
|
case AF_INET6:
|
|
if (ipv6_addr_legal) {
|
|
struct sockaddr_in6 *sin6;
|
|
|
|
sin6 = &sctp_ifa->address.sin6;
|
|
if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
|
|
continue;
|
|
}
|
|
if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
|
|
&sin6->sin6_addr) != 0) {
|
|
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
|
|
static void
|
|
sctp_recv_udp_tunneled_packet(struct mbuf *m, int off, struct inpcb *inp,
|
|
const struct sockaddr *sa SCTP_UNUSED, void *ctx SCTP_UNUSED)
|
|
{
|
|
struct ip *iph;
|
|
|
|
#ifdef INET6
|
|
struct ip6_hdr *ip6;
|
|
|
|
#endif
|
|
struct mbuf *sp, *last;
|
|
struct udphdr *uhdr;
|
|
uint16_t port;
|
|
|
|
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;
|
|
/*
|
|
* Split out the mbuf chain. Leave the IP header in m, place the
|
|
* rest in the sp.
|
|
*/
|
|
sp = m_split(m, off, M_NOWAIT);
|
|
if (sp == NULL) {
|
|
/* Gak, drop packet, we can't do a split */
|
|
goto out;
|
|
}
|
|
if (sp->m_pkthdr.len < sizeof(struct udphdr) + sizeof(struct sctphdr)) {
|
|
/* Gak, packet can't have an SCTP header in it - too small */
|
|
m_freem(sp);
|
|
goto out;
|
|
}
|
|
/* Now pull up the UDP header and SCTP header together */
|
|
sp = m_pullup(sp, sizeof(struct udphdr) + sizeof(struct sctphdr));
|
|
if (sp == NULL) {
|
|
/* Gak pullup failed */
|
|
goto out;
|
|
}
|
|
/* Trim out the UDP header */
|
|
m_adj(sp, sizeof(struct udphdr));
|
|
|
|
/* Now reconstruct the mbuf chain */
|
|
for (last = m; last->m_next; last = last->m_next);
|
|
last->m_next = sp;
|
|
m->m_pkthdr.len += sp->m_pkthdr.len;
|
|
iph = mtod(m, struct ip *);
|
|
switch (iph->ip_v) {
|
|
#ifdef INET
|
|
case IPVERSION:
|
|
iph->ip_len = htons(ntohs(iph->ip_len) - sizeof(struct udphdr));
|
|
sctp_input_with_port(m, off, port);
|
|
break;
|
|
#endif
|
|
#ifdef INET6
|
|
case IPV6_VERSION >> 4:
|
|
ip6 = mtod(m, struct ip6_hdr *);
|
|
ip6->ip6_plen = htons(ntohs(ip6->ip6_plen) - sizeof(struct udphdr));
|
|
sctp6_input_with_port(&m, &off, port);
|
|
break;
|
|
#endif
|
|
default:
|
|
goto out;
|
|
break;
|
|
}
|
|
return;
|
|
out:
|
|
m_freem(m);
|
|
}
|
|
|
|
void
|
|
sctp_over_udp_stop(void)
|
|
{
|
|
/*
|
|
* This function assumes sysctl caller holds sctp_sysctl_info_lock()
|
|
* for writting!
|
|
*/
|
|
#ifdef INET
|
|
if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
|
|
soclose(SCTP_BASE_INFO(udp4_tun_socket));
|
|
SCTP_BASE_INFO(udp4_tun_socket) = NULL;
|
|
}
|
|
#endif
|
|
#ifdef INET6
|
|
if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
|
|
soclose(SCTP_BASE_INFO(udp6_tun_socket));
|
|
SCTP_BASE_INFO(udp6_tun_socket) = NULL;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
int
|
|
sctp_over_udp_start(void)
|
|
{
|
|
uint16_t port;
|
|
int ret;
|
|
|
|
#ifdef INET
|
|
struct sockaddr_in sin;
|
|
|
|
#endif
|
|
#ifdef INET6
|
|
struct sockaddr_in6 sin6;
|
|
|
|
#endif
|
|
/*
|
|
* This function assumes sysctl caller holds sctp_sysctl_info_lock()
|
|
* for writting!
|
|
*/
|
|
port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port);
|
|
if (ntohs(port) == 0) {
|
|
/* Must have a port set */
|
|
return (EINVAL);
|
|
}
|
|
#ifdef INET
|
|
if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
|
|
/* Already running -- must stop first */
|
|
return (EALREADY);
|
|
}
|
|
#endif
|
|
#ifdef INET6
|
|
if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
|
|
/* Already running -- must stop first */
|
|
return (EALREADY);
|
|
}
|
|
#endif
|
|
#ifdef INET
|
|
if ((ret = socreate(PF_INET, &SCTP_BASE_INFO(udp4_tun_socket),
|
|
SOCK_DGRAM, IPPROTO_UDP,
|
|
curthread->td_ucred, curthread))) {
|
|
sctp_over_udp_stop();
|
|
return (ret);
|
|
}
|
|
/* Call the special UDP hook. */
|
|
if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp4_tun_socket),
|
|
sctp_recv_udp_tunneled_packet, NULL))) {
|
|
sctp_over_udp_stop();
|
|
return (ret);
|
|
}
|
|
/* Ok, we have a socket, bind it to the port. */
|
|
memset(&sin, 0, sizeof(struct sockaddr_in));
|
|
sin.sin_len = sizeof(struct sockaddr_in);
|
|
sin.sin_family = AF_INET;
|
|
sin.sin_port = htons(port);
|
|
if ((ret = sobind(SCTP_BASE_INFO(udp4_tun_socket),
|
|
(struct sockaddr *)&sin, curthread))) {
|
|
sctp_over_udp_stop();
|
|
return (ret);
|
|
}
|
|
#endif
|
|
#ifdef INET6
|
|
if ((ret = socreate(PF_INET6, &SCTP_BASE_INFO(udp6_tun_socket),
|
|
SOCK_DGRAM, IPPROTO_UDP,
|
|
curthread->td_ucred, curthread))) {
|
|
sctp_over_udp_stop();
|
|
return (ret);
|
|
}
|
|
/* Call the special UDP hook. */
|
|
if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp6_tun_socket),
|
|
sctp_recv_udp_tunneled_packet, NULL))) {
|
|
sctp_over_udp_stop();
|
|
return (ret);
|
|
}
|
|
/* Ok, we have a socket, bind it to the port. */
|
|
memset(&sin6, 0, sizeof(struct sockaddr_in6));
|
|
sin6.sin6_len = sizeof(struct sockaddr_in6);
|
|
sin6.sin6_family = AF_INET6;
|
|
sin6.sin6_port = htons(port);
|
|
if ((ret = sobind(SCTP_BASE_INFO(udp6_tun_socket),
|
|
(struct sockaddr *)&sin6, curthread))) {
|
|
sctp_over_udp_stop();
|
|
return (ret);
|
|
}
|
|
#endif
|
|
return (0);
|
|
}
|