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997 lines
28 KiB
C
997 lines
28 KiB
C
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/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
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* Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
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* Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* a) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* b) Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the distribution.
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*
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* c) Neither the name of Cisco Systems, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#if defined(__FreeBSD__) && !defined(__Userspace__)
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD: head/sys/netinet/sctp_bsd_addr.c 358080 2020-02-18 19:41:55Z tuexen $");
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#endif
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#include <netinet/sctp_os.h>
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#include <netinet/sctp_var.h>
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#include <netinet/sctp_pcb.h>
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#include <netinet/sctp_header.h>
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#include <netinet/sctputil.h>
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#include <netinet/sctp_output.h>
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#include <netinet/sctp_bsd_addr.h>
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#include <netinet/sctp_uio.h>
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#include <netinet/sctputil.h>
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#include <netinet/sctp_timer.h>
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#include <netinet/sctp_asconf.h>
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#include <netinet/sctp_sysctl.h>
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#include <netinet/sctp_indata.h>
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#if defined(__FreeBSD__) && !defined(__Userspace__)
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#include <sys/unistd.h>
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#endif
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/* Declare all of our malloc named types */
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MALLOC_DEFINE(SCTP_M_MAP, "sctp_map", "sctp asoc map descriptor");
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MALLOC_DEFINE(SCTP_M_STRMI, "sctp_stri", "sctp stream in array");
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MALLOC_DEFINE(SCTP_M_STRMO, "sctp_stro", "sctp stream out array");
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MALLOC_DEFINE(SCTP_M_ASC_ADDR, "sctp_aadr", "sctp asconf address");
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MALLOC_DEFINE(SCTP_M_ASC_IT, "sctp_a_it", "sctp asconf iterator");
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MALLOC_DEFINE(SCTP_M_AUTH_CL, "sctp_atcl", "sctp auth chunklist");
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MALLOC_DEFINE(SCTP_M_AUTH_KY, "sctp_atky", "sctp auth key");
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MALLOC_DEFINE(SCTP_M_AUTH_HL, "sctp_athm", "sctp auth hmac list");
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MALLOC_DEFINE(SCTP_M_AUTH_IF, "sctp_athi", "sctp auth info");
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MALLOC_DEFINE(SCTP_M_STRESET, "sctp_stre", "sctp stream reset");
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MALLOC_DEFINE(SCTP_M_CMSG, "sctp_cmsg", "sctp CMSG buffer");
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MALLOC_DEFINE(SCTP_M_COPYAL, "sctp_cpal", "sctp copy all");
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MALLOC_DEFINE(SCTP_M_VRF, "sctp_vrf", "sctp vrf struct");
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MALLOC_DEFINE(SCTP_M_IFA, "sctp_ifa", "sctp ifa struct");
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MALLOC_DEFINE(SCTP_M_IFN, "sctp_ifn", "sctp ifn struct");
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MALLOC_DEFINE(SCTP_M_TIMW, "sctp_timw", "sctp time block");
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MALLOC_DEFINE(SCTP_M_MVRF, "sctp_mvrf", "sctp mvrf pcb list");
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MALLOC_DEFINE(SCTP_M_ITER, "sctp_iter", "sctp iterator control");
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MALLOC_DEFINE(SCTP_M_SOCKOPT, "sctp_socko", "sctp socket option");
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MALLOC_DEFINE(SCTP_M_MCORE, "sctp_mcore", "sctp mcore queue");
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/* Global NON-VNET structure that controls the iterator */
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struct iterator_control sctp_it_ctl;
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#if !(defined(__FreeBSD__) && !defined(__Userspace__))
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static void
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sctp_cleanup_itqueue(void)
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{
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struct sctp_iterator *it, *nit;
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TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
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if (it->function_atend != NULL) {
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(*it->function_atend) (it->pointer, it->val);
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}
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TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
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SCTP_FREE(it, SCTP_M_ITER);
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}
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}
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#endif
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#if defined(__Userspace__)
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/*__Userspace__ TODO if we use thread based iterator
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* then the implementation of wakeup will need to change.
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* Currently we are using timeo_cond for ident so_timeo
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* but that is not sufficient if we need to use another ident
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* like wakeup(&sctppcbinfo.iterator_running);
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*/
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#endif
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void
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sctp_wakeup_iterator(void)
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{
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#if defined(SCTP_PROCESS_LEVEL_LOCKS)
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#if defined(_WIN32)
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WakeAllConditionVariable(&sctp_it_ctl.iterator_wakeup);
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#else
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pthread_cond_broadcast(&sctp_it_ctl.iterator_wakeup);
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#endif
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#else
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wakeup(&sctp_it_ctl.iterator_running);
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#endif
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}
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#if defined(__Userspace__)
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static void *
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#else
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static void
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#endif
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sctp_iterator_thread(void *v SCTP_UNUSED)
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{
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#if defined(__Userspace__)
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sctp_userspace_set_threadname("SCTP iterator");
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#endif
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SCTP_IPI_ITERATOR_WQ_LOCK();
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/* In FreeBSD this thread never terminates. */
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#if defined(__FreeBSD__) && !defined(__Userspace__)
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for (;;) {
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#else
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while ((sctp_it_ctl.iterator_flags & SCTP_ITERATOR_MUST_EXIT) == 0) {
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#endif
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#if !defined(__Userspace__)
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msleep(&sctp_it_ctl.iterator_running,
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#if defined(__FreeBSD__)
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&sctp_it_ctl.ipi_iterator_wq_mtx,
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#elif defined(__APPLE__)
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sctp_it_ctl.ipi_iterator_wq_mtx,
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#endif
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0, "waiting_for_work", 0);
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#else
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#if defined(_WIN32)
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SleepConditionVariableCS(&sctp_it_ctl.iterator_wakeup, &sctp_it_ctl.ipi_iterator_wq_mtx, INFINITE);
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#else
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pthread_cond_wait(&sctp_it_ctl.iterator_wakeup, &sctp_it_ctl.ipi_iterator_wq_mtx);
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#endif
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#endif
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#if !(defined(__FreeBSD__) && !defined(__Userspace__))
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if (sctp_it_ctl.iterator_flags & SCTP_ITERATOR_MUST_EXIT) {
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break;
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}
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#endif
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sctp_iterator_worker();
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}
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#if !(defined(__FreeBSD__) && !defined(__Userspace__))
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/* Now this thread needs to be terminated */
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sctp_cleanup_itqueue();
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sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_EXITED;
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SCTP_IPI_ITERATOR_WQ_UNLOCK();
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#if defined(__Userspace__)
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sctp_wakeup_iterator();
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return (NULL);
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#else
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wakeup(&sctp_it_ctl.iterator_flags);
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thread_terminate(current_thread());
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#ifdef INVARIANTS
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panic("Hmm. thread_terminate() continues...");
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#endif
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#endif
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#endif
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}
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void
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sctp_startup_iterator(void)
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{
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if (sctp_it_ctl.thread_proc) {
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/* You only get one */
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return;
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}
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/* Initialize global locks here, thus only once. */
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SCTP_ITERATOR_LOCK_INIT();
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SCTP_IPI_ITERATOR_WQ_INIT();
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TAILQ_INIT(&sctp_it_ctl.iteratorhead);
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#if defined(__Userspace__)
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if (sctp_userspace_thread_create(&sctp_it_ctl.thread_proc, &sctp_iterator_thread)) {
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SCTP_PRINTF("ERROR: Creating sctp_iterator_thread failed.\n");
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} else {
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SCTP_BASE_VAR(iterator_thread_started) = 1;
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}
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#elif defined(__FreeBSD__)
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kproc_create(sctp_iterator_thread,
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(void *)NULL,
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&sctp_it_ctl.thread_proc,
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RFPROC,
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SCTP_KTHREAD_PAGES,
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SCTP_KTRHEAD_NAME);
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#elif defined(__APPLE__)
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kernel_thread_start((thread_continue_t)sctp_iterator_thread, NULL, &sctp_it_ctl.thread_proc);
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#endif
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}
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#ifdef INET6
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#if defined(__Userspace__)
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/* __Userspace__ TODO. struct in6_ifaddr is defined in sys/netinet6/in6_var.h
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ip6_use_deprecated is defined as int ip6_use_deprecated = 1; in /src/sys/netinet6/in6_proto.c
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*/
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void
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sctp_gather_internal_ifa_flags(struct sctp_ifa *ifa)
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{
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return; /* stub */
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}
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#else
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void
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sctp_gather_internal_ifa_flags(struct sctp_ifa *ifa)
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{
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struct in6_ifaddr *ifa6;
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ifa6 = (struct in6_ifaddr *)ifa->ifa;
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ifa->flags = ifa6->ia6_flags;
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if (!MODULE_GLOBAL(ip6_use_deprecated)) {
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if (ifa->flags &
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IN6_IFF_DEPRECATED) {
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ifa->localifa_flags |= SCTP_ADDR_IFA_UNUSEABLE;
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} else {
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ifa->localifa_flags &= ~SCTP_ADDR_IFA_UNUSEABLE;
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}
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} else {
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ifa->localifa_flags &= ~SCTP_ADDR_IFA_UNUSEABLE;
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}
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if (ifa->flags &
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(IN6_IFF_DETACHED |
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IN6_IFF_ANYCAST |
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IN6_IFF_NOTREADY)) {
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ifa->localifa_flags |= SCTP_ADDR_IFA_UNUSEABLE;
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} else {
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ifa->localifa_flags &= ~SCTP_ADDR_IFA_UNUSEABLE;
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}
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}
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#endif /* __Userspace__ */
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#endif /* INET6 */
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#if !defined(__Userspace__)
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static uint32_t
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sctp_is_desired_interface_type(struct ifnet *ifn)
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{
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int result;
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/* check the interface type to see if it's one we care about */
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#if defined(__APPLE__) && !defined(__Userspace__)
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switch(ifnet_type(ifn)) {
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#else
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switch (ifn->if_type) {
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#endif
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case IFT_ETHER:
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case IFT_ISO88023:
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case IFT_ISO88024:
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case IFT_ISO88025:
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case IFT_ISO88026:
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case IFT_STARLAN:
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case IFT_P10:
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case IFT_P80:
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case IFT_HY:
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case IFT_FDDI:
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case IFT_XETHER:
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case IFT_ISDNBASIC:
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case IFT_ISDNPRIMARY:
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case IFT_PTPSERIAL:
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case IFT_OTHER:
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case IFT_PPP:
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case IFT_LOOP:
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case IFT_SLIP:
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case IFT_GIF:
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case IFT_L2VLAN:
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case IFT_STF:
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#if !(defined(__APPLE__) && !defined(__Userspace__))
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case IFT_IP:
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case IFT_IPOVERCDLC:
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case IFT_IPOVERCLAW:
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case IFT_PROPVIRTUAL: /* NetGraph Virtual too */
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case IFT_VIRTUALIPADDRESS:
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#endif
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result = 1;
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break;
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default:
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result = 0;
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}
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return (result);
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}
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#endif
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#if defined(__APPLE__) && !defined(__Userspace__)
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int
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sctp_is_vmware_interface(struct ifnet *ifn)
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{
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return (strncmp(ifnet_name(ifn), "vmnet", 5) == 0);
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}
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#endif
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#if defined(_WIN32) && defined(__Userspace__)
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#ifdef MALLOC
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#undef MALLOC
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#define MALLOC(x) HeapAlloc(GetProcessHeap(), 0, (x))
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#endif
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#ifdef FREE
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#undef FREE
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#define FREE(x) HeapFree(GetProcessHeap(), 0, (x))
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#endif
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static void
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sctp_init_ifns_for_vrf(int vrfid)
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{
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#if defined(INET) || defined(INET6)
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struct sctp_ifa *sctp_ifa;
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DWORD Err, AdapterAddrsSize;
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PIP_ADAPTER_ADDRESSES pAdapterAddrs, pAdapt;
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PIP_ADAPTER_UNICAST_ADDRESS pUnicast;
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#endif
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#ifdef INET
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AdapterAddrsSize = 0;
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if ((Err = GetAdaptersAddresses(AF_INET, 0, NULL, NULL, &AdapterAddrsSize)) != 0) {
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if ((Err != ERROR_BUFFER_OVERFLOW) && (Err != ERROR_INSUFFICIENT_BUFFER)) {
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SCTP_PRINTF("GetAdaptersV4Addresses() sizing failed with error code %d\n", Err);
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SCTP_PRINTF("err = %d; AdapterAddrsSize = %d\n", Err, AdapterAddrsSize);
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return;
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}
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}
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/* Allocate memory from sizing information */
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if ((pAdapterAddrs = (PIP_ADAPTER_ADDRESSES) GlobalAlloc(GPTR, AdapterAddrsSize)) == NULL) {
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SCTP_PRINTF("Memory allocation error!\n");
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return;
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}
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/* Get actual adapter information */
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if ((Err = GetAdaptersAddresses(AF_INET, 0, NULL, pAdapterAddrs, &AdapterAddrsSize)) != ERROR_SUCCESS) {
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SCTP_PRINTF("GetAdaptersV4Addresses() failed with error code %d\n", Err);
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FREE(pAdapterAddrs);
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return;
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}
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/* Enumerate through each returned adapter and save its information */
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for (pAdapt = pAdapterAddrs; pAdapt; pAdapt = pAdapt->Next) {
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if (pAdapt->IfType == IF_TYPE_IEEE80211 || pAdapt->IfType == IF_TYPE_ETHERNET_CSMACD) {
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for (pUnicast = pAdapt->FirstUnicastAddress; pUnicast; pUnicast = pUnicast->Next) {
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if (IN4_ISLINKLOCAL_ADDRESS(&(((struct sockaddr_in *)(pUnicast->Address.lpSockaddr))->sin_addr))) {
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continue;
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}
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sctp_ifa = sctp_add_addr_to_vrf(0,
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NULL,
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pAdapt->IfIndex,
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(pAdapt->IfType == IF_TYPE_IEEE80211)?MIB_IF_TYPE_ETHERNET:pAdapt->IfType,
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pAdapt->AdapterName,
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NULL,
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pUnicast->Address.lpSockaddr,
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pAdapt->Flags,
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0);
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if (sctp_ifa) {
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sctp_ifa->localifa_flags &= ~SCTP_ADDR_DEFER_USE;
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}
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}
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}
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}
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FREE(pAdapterAddrs);
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#endif
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#ifdef INET6
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AdapterAddrsSize = 0;
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if ((Err = GetAdaptersAddresses(AF_INET6, 0, NULL, NULL, &AdapterAddrsSize)) != 0) {
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if ((Err != ERROR_BUFFER_OVERFLOW) && (Err != ERROR_INSUFFICIENT_BUFFER)) {
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SCTP_PRINTF("GetAdaptersV6Addresses() sizing failed with error code %d\n", Err);
|
||
|
SCTP_PRINTF("err = %d; AdapterAddrsSize = %d\n", Err, AdapterAddrsSize);
|
||
|
return;
|
||
|
}
|
||
|
}
|
||
|
/* Allocate memory from sizing information */
|
||
|
if ((pAdapterAddrs = (PIP_ADAPTER_ADDRESSES) GlobalAlloc(GPTR, AdapterAddrsSize)) == NULL) {
|
||
|
SCTP_PRINTF("Memory allocation error!\n");
|
||
|
return;
|
||
|
}
|
||
|
/* Get actual adapter information */
|
||
|
if ((Err = GetAdaptersAddresses(AF_INET6, 0, NULL, pAdapterAddrs, &AdapterAddrsSize)) != ERROR_SUCCESS) {
|
||
|
SCTP_PRINTF("GetAdaptersV6Addresses() failed with error code %d\n", Err);
|
||
|
FREE(pAdapterAddrs);
|
||
|
return;
|
||
|
}
|
||
|
/* Enumerate through each returned adapter and save its information */
|
||
|
for (pAdapt = pAdapterAddrs; pAdapt; pAdapt = pAdapt->Next) {
|
||
|
if (pAdapt->IfType == IF_TYPE_IEEE80211 || pAdapt->IfType == IF_TYPE_ETHERNET_CSMACD) {
|
||
|
for (pUnicast = pAdapt->FirstUnicastAddress; pUnicast; pUnicast = pUnicast->Next) {
|
||
|
sctp_ifa = sctp_add_addr_to_vrf(0,
|
||
|
NULL,
|
||
|
pAdapt->Ipv6IfIndex,
|
||
|
(pAdapt->IfType == IF_TYPE_IEEE80211)?MIB_IF_TYPE_ETHERNET:pAdapt->IfType,
|
||
|
pAdapt->AdapterName,
|
||
|
NULL,
|
||
|
pUnicast->Address.lpSockaddr,
|
||
|
pAdapt->Flags,
|
||
|
0);
|
||
|
if (sctp_ifa) {
|
||
|
sctp_ifa->localifa_flags &= ~SCTP_ADDR_DEFER_USE;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
FREE(pAdapterAddrs);
|
||
|
#endif
|
||
|
}
|
||
|
#elif defined(__Userspace__)
|
||
|
static void
|
||
|
sctp_init_ifns_for_vrf(int vrfid)
|
||
|
{
|
||
|
#if defined(INET) || defined(INET6)
|
||
|
int rc;
|
||
|
struct ifaddrs *ifa, *ifas;
|
||
|
struct sctp_ifa *sctp_ifa;
|
||
|
uint32_t ifa_flags;
|
||
|
|
||
|
rc = getifaddrs(&ifas);
|
||
|
if (rc != 0) {
|
||
|
return;
|
||
|
}
|
||
|
for (ifa = ifas; ifa; ifa = ifa->ifa_next) {
|
||
|
if (ifa->ifa_addr == NULL) {
|
||
|
continue;
|
||
|
}
|
||
|
#if !defined(INET)
|
||
|
if (ifa->ifa_addr->sa_family != AF_INET6) {
|
||
|
/* non inet6 skip */
|
||
|
continue;
|
||
|
}
|
||
|
#elif !defined(INET6)
|
||
|
if (ifa->ifa_addr->sa_family != AF_INET) {
|
||
|
/* non inet skip */
|
||
|
continue;
|
||
|
}
|
||
|
#else
|
||
|
if ((ifa->ifa_addr->sa_family != AF_INET) && (ifa->ifa_addr->sa_family != AF_INET6)) {
|
||
|
/* non inet/inet6 skip */
|
||
|
continue;
|
||
|
}
|
||
|
#endif
|
||
|
#if defined(INET6)
|
||
|
if ((ifa->ifa_addr->sa_family == AF_INET6) &&
|
||
|
IN6_IS_ADDR_UNSPECIFIED(&((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr)) {
|
||
|
/* skip unspecifed addresses */
|
||
|
continue;
|
||
|
}
|
||
|
#endif
|
||
|
#if defined(INET)
|
||
|
if (ifa->ifa_addr->sa_family == AF_INET &&
|
||
|
((struct sockaddr_in *)ifa->ifa_addr)->sin_addr.s_addr == 0) {
|
||
|
continue;
|
||
|
}
|
||
|
#endif
|
||
|
ifa_flags = 0;
|
||
|
sctp_ifa = sctp_add_addr_to_vrf(vrfid,
|
||
|
NULL,
|
||
|
if_nametoindex(ifa->ifa_name),
|
||
|
0,
|
||
|
ifa->ifa_name,
|
||
|
NULL,
|
||
|
ifa->ifa_addr,
|
||
|
ifa_flags,
|
||
|
0);
|
||
|
if (sctp_ifa) {
|
||
|
sctp_ifa->localifa_flags &= ~SCTP_ADDR_DEFER_USE;
|
||
|
}
|
||
|
}
|
||
|
freeifaddrs(ifas);
|
||
|
#endif
|
||
|
}
|
||
|
#endif
|
||
|
|
||
|
#if defined(__APPLE__) && !defined(__Userspace__)
|
||
|
static void
|
||
|
sctp_init_ifns_for_vrf(int vrfid)
|
||
|
{
|
||
|
/* Here we must apply ANY locks needed by the
|
||
|
* IFN we access and also make sure we lock
|
||
|
* any IFA that exists as we float through the
|
||
|
* list of IFA's
|
||
|
*/
|
||
|
struct ifnet **ifnetlist;
|
||
|
uint32_t i, j, count;
|
||
|
char name[SCTP_IFNAMSIZ];
|
||
|
struct ifnet *ifn;
|
||
|
struct ifaddr **ifaddrlist;
|
||
|
struct ifaddr *ifa;
|
||
|
struct in6_ifaddr *ifa6;
|
||
|
struct sctp_ifa *sctp_ifa;
|
||
|
uint32_t ifa_flags;
|
||
|
|
||
|
if (ifnet_list_get(IFNET_FAMILY_ANY, &ifnetlist, &count) != 0) {
|
||
|
return;
|
||
|
}
|
||
|
for (i = 0; i < count; i++) {
|
||
|
ifn = ifnetlist[i];
|
||
|
if (SCTP_BASE_SYSCTL(sctp_ignore_vmware_interfaces) && sctp_is_vmware_interface(ifn)) {
|
||
|
continue;
|
||
|
}
|
||
|
if (sctp_is_desired_interface_type(ifn) == 0) {
|
||
|
/* non desired type */
|
||
|
continue;
|
||
|
}
|
||
|
if (ifnet_get_address_list(ifn, &ifaddrlist) != 0) {
|
||
|
continue;
|
||
|
}
|
||
|
for (j = 0; ifaddrlist[j] != NULL; j++) {
|
||
|
ifa = ifaddrlist[j];
|
||
|
if (ifa->ifa_addr == NULL) {
|
||
|
continue;
|
||
|
}
|
||
|
if ((ifa->ifa_addr->sa_family != AF_INET) && (ifa->ifa_addr->sa_family != AF_INET6)) {
|
||
|
/* non inet/inet6 skip */
|
||
|
continue;
|
||
|
}
|
||
|
if (ifa->ifa_addr->sa_family == AF_INET6) {
|
||
|
if (IN6_IS_ADDR_UNSPECIFIED(&((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr)) {
|
||
|
/* skip unspecifed addresses */
|
||
|
continue;
|
||
|
}
|
||
|
} else {
|
||
|
if (((struct sockaddr_in *)ifa->ifa_addr)->sin_addr.s_addr == INADDR_ANY) {
|
||
|
continue;
|
||
|
}
|
||
|
}
|
||
|
if (ifa->ifa_addr->sa_family == AF_INET6) {
|
||
|
ifa6 = (struct in6_ifaddr *)ifa;
|
||
|
ifa_flags = ifa6->ia6_flags;
|
||
|
} else {
|
||
|
ifa_flags = 0;
|
||
|
}
|
||
|
SCTP_SNPRINTF(name, SCTP_IFNAMSIZ, "%s%d", ifnet_name(ifn), ifnet_unit(ifn));
|
||
|
sctp_ifa = sctp_add_addr_to_vrf(vrfid,
|
||
|
(void *)ifn, /* XXX */
|
||
|
ifnet_index(ifn),
|
||
|
ifnet_type(ifn),
|
||
|
name,
|
||
|
(void *)ifa, /* XXX */
|
||
|
ifa->ifa_addr,
|
||
|
ifa_flags,
|
||
|
0);
|
||
|
if (sctp_ifa) {
|
||
|
sctp_ifa->localifa_flags &= ~SCTP_ADDR_DEFER_USE;
|
||
|
}
|
||
|
}
|
||
|
ifnet_free_address_list(ifaddrlist);
|
||
|
}
|
||
|
ifnet_list_free(ifnetlist);
|
||
|
}
|
||
|
#endif
|
||
|
|
||
|
#if defined(__FreeBSD__) && !defined(__Userspace__)
|
||
|
static void
|
||
|
sctp_init_ifns_for_vrf(int vrfid)
|
||
|
{
|
||
|
/* Here we must apply ANY locks needed by the
|
||
|
* IFN we access and also make sure we lock
|
||
|
* any IFA that exists as we float through the
|
||
|
* list of IFA's
|
||
|
*/
|
||
|
struct epoch_tracker et;
|
||
|
struct ifnet *ifn;
|
||
|
struct ifaddr *ifa;
|
||
|
struct sctp_ifa *sctp_ifa;
|
||
|
uint32_t ifa_flags;
|
||
|
#ifdef INET6
|
||
|
struct in6_ifaddr *ifa6;
|
||
|
#endif
|
||
|
|
||
|
IFNET_RLOCK();
|
||
|
NET_EPOCH_ENTER(et);
|
||
|
CK_STAILQ_FOREACH(ifn, &MODULE_GLOBAL(ifnet), if_link) {
|
||
|
if (sctp_is_desired_interface_type(ifn) == 0) {
|
||
|
/* non desired type */
|
||
|
continue;
|
||
|
}
|
||
|
CK_STAILQ_FOREACH(ifa, &ifn->if_addrhead, ifa_link) {
|
||
|
if (ifa->ifa_addr == NULL) {
|
||
|
continue;
|
||
|
}
|
||
|
switch (ifa->ifa_addr->sa_family) {
|
||
|
#ifdef INET
|
||
|
case AF_INET:
|
||
|
if (((struct sockaddr_in *)ifa->ifa_addr)->sin_addr.s_addr == 0) {
|
||
|
continue;
|
||
|
}
|
||
|
break;
|
||
|
#endif
|
||
|
#ifdef INET6
|
||
|
case AF_INET6:
|
||
|
if (IN6_IS_ADDR_UNSPECIFIED(&((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr)) {
|
||
|
/* skip unspecifed addresses */
|
||
|
continue;
|
||
|
}
|
||
|
break;
|
||
|
#endif
|
||
|
default:
|
||
|
continue;
|
||
|
}
|
||
|
switch (ifa->ifa_addr->sa_family) {
|
||
|
#ifdef INET
|
||
|
case AF_INET:
|
||
|
ifa_flags = 0;
|
||
|
break;
|
||
|
#endif
|
||
|
#ifdef INET6
|
||
|
case AF_INET6:
|
||
|
ifa6 = (struct in6_ifaddr *)ifa;
|
||
|
ifa_flags = ifa6->ia6_flags;
|
||
|
break;
|
||
|
#endif
|
||
|
default:
|
||
|
ifa_flags = 0;
|
||
|
break;
|
||
|
}
|
||
|
sctp_ifa = sctp_add_addr_to_vrf(vrfid,
|
||
|
(void *)ifn,
|
||
|
ifn->if_index,
|
||
|
ifn->if_type,
|
||
|
ifn->if_xname,
|
||
|
(void *)ifa,
|
||
|
ifa->ifa_addr,
|
||
|
ifa_flags,
|
||
|
0);
|
||
|
if (sctp_ifa) {
|
||
|
sctp_ifa->localifa_flags &= ~SCTP_ADDR_DEFER_USE;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
NET_EPOCH_EXIT(et);
|
||
|
IFNET_RUNLOCK();
|
||
|
}
|
||
|
#endif
|
||
|
|
||
|
void
|
||
|
sctp_init_vrf_list(int vrfid)
|
||
|
{
|
||
|
if (vrfid > SCTP_MAX_VRF_ID)
|
||
|
/* can't do that */
|
||
|
return;
|
||
|
|
||
|
/* Don't care about return here */
|
||
|
(void)sctp_allocate_vrf(vrfid);
|
||
|
|
||
|
/* Now we need to build all the ifn's
|
||
|
* for this vrf and there addresses
|
||
|
*/
|
||
|
sctp_init_ifns_for_vrf(vrfid);
|
||
|
}
|
||
|
|
||
|
void
|
||
|
sctp_addr_change(struct ifaddr *ifa, int cmd)
|
||
|
{
|
||
|
#if defined(__Userspace__)
|
||
|
return;
|
||
|
#else
|
||
|
uint32_t ifa_flags = 0;
|
||
|
|
||
|
if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
|
||
|
return;
|
||
|
}
|
||
|
/* BSD only has one VRF, if this changes
|
||
|
* we will need to hook in the right
|
||
|
* things here to get the id to pass to
|
||
|
* the address management routine.
|
||
|
*/
|
||
|
if (SCTP_BASE_VAR(first_time) == 0) {
|
||
|
/* Special test to see if my ::1 will showup with this */
|
||
|
SCTP_BASE_VAR(first_time) = 1;
|
||
|
sctp_init_ifns_for_vrf(SCTP_DEFAULT_VRFID);
|
||
|
}
|
||
|
|
||
|
if ((cmd != RTM_ADD) && (cmd != RTM_DELETE)) {
|
||
|
/* don't know what to do with this */
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
if (ifa->ifa_addr == NULL) {
|
||
|
return;
|
||
|
}
|
||
|
if (sctp_is_desired_interface_type(ifa->ifa_ifp) == 0) {
|
||
|
/* non desired type */
|
||
|
return;
|
||
|
}
|
||
|
switch (ifa->ifa_addr->sa_family) {
|
||
|
#ifdef INET
|
||
|
case AF_INET:
|
||
|
if (((struct sockaddr_in *)ifa->ifa_addr)->sin_addr.s_addr == 0) {
|
||
|
return;
|
||
|
}
|
||
|
break;
|
||
|
#endif
|
||
|
#ifdef INET6
|
||
|
case AF_INET6:
|
||
|
ifa_flags = ((struct in6_ifaddr *)ifa)->ia6_flags;
|
||
|
if (IN6_IS_ADDR_UNSPECIFIED(&((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr)) {
|
||
|
/* skip unspecifed addresses */
|
||
|
return;
|
||
|
}
|
||
|
break;
|
||
|
#endif
|
||
|
default:
|
||
|
/* non inet/inet6 skip */
|
||
|
return;
|
||
|
}
|
||
|
if (cmd == RTM_ADD) {
|
||
|
(void)sctp_add_addr_to_vrf(SCTP_DEFAULT_VRFID, (void *)ifa->ifa_ifp,
|
||
|
#if defined(__APPLE__) && !defined(__Userspace__)
|
||
|
ifnet_index(ifa->ifa_ifp), ifnet_type(ifa->ifa_ifp), ifnet_name(ifa->ifa_ifp),
|
||
|
#else
|
||
|
ifa->ifa_ifp->if_index, ifa->ifa_ifp->if_type, ifa->ifa_ifp->if_xname,
|
||
|
#endif
|
||
|
(void *)ifa, ifa->ifa_addr, ifa_flags, 1);
|
||
|
} else {
|
||
|
|
||
|
sctp_del_addr_from_vrf(SCTP_DEFAULT_VRFID, ifa->ifa_addr,
|
||
|
#if defined(__APPLE__) && !defined(__Userspace__)
|
||
|
ifnet_index(ifa->ifa_ifp),
|
||
|
ifnet_name(ifa->ifa_ifp));
|
||
|
#else
|
||
|
ifa->ifa_ifp->if_index,
|
||
|
ifa->ifa_ifp->if_xname);
|
||
|
#endif
|
||
|
|
||
|
/* We don't bump refcount here so when it completes
|
||
|
* the final delete will happen.
|
||
|
*/
|
||
|
}
|
||
|
#endif
|
||
|
}
|
||
|
|
||
|
#if defined(__FreeBSD__) && !defined(__Userspace__)
|
||
|
void
|
||
|
sctp_addr_change_event_handler(void *arg __unused, struct ifaddr *ifa, int cmd) {
|
||
|
sctp_addr_change(ifa, cmd);
|
||
|
}
|
||
|
#endif
|
||
|
#if defined(__APPLE__) && !defined(__Userspace__)
|
||
|
void
|
||
|
sctp_add_or_del_interfaces(int (*pred)(struct ifnet *), int add)
|
||
|
{
|
||
|
struct ifnet **ifnetlist;
|
||
|
struct ifaddr **ifaddrlist;
|
||
|
uint32_t i, j, count;
|
||
|
|
||
|
if (ifnet_list_get(IFNET_FAMILY_ANY, &ifnetlist, &count) != 0) {
|
||
|
return;
|
||
|
}
|
||
|
for (i = 0; i < count; i++) {
|
||
|
if (!(*pred)(ifnetlist[i])) {
|
||
|
continue;
|
||
|
}
|
||
|
if (ifnet_get_address_list(ifnetlist[i], &ifaddrlist) != 0) {
|
||
|
continue;
|
||
|
}
|
||
|
for (j = 0; ifaddrlist[j] != NULL; j++) {
|
||
|
sctp_addr_change(ifaddrlist[j], add ? RTM_ADD : RTM_DELETE);
|
||
|
}
|
||
|
ifnet_free_address_list(ifaddrlist);
|
||
|
}
|
||
|
ifnet_list_free(ifnetlist);
|
||
|
return;
|
||
|
}
|
||
|
#endif
|
||
|
|
||
|
struct mbuf *
|
||
|
sctp_get_mbuf_for_msg(unsigned int space_needed, int want_header,
|
||
|
int how, int allonebuf, int type)
|
||
|
{
|
||
|
struct mbuf *m = NULL;
|
||
|
#if defined(__FreeBSD__) || defined(__Userspace__)
|
||
|
#if defined(__Userspace__)
|
||
|
m = m_getm2(NULL, space_needed, how, type, want_header ? M_PKTHDR : 0, allonebuf);
|
||
|
#else
|
||
|
m = m_getm2(NULL, space_needed, how, type, want_header ? M_PKTHDR : 0);
|
||
|
#endif
|
||
|
if (m == NULL) {
|
||
|
/* bad, no memory */
|
||
|
return (m);
|
||
|
}
|
||
|
#if !defined(__Userspace__)
|
||
|
if (allonebuf) {
|
||
|
if (SCTP_BUF_SIZE(m) < space_needed) {
|
||
|
m_freem(m);
|
||
|
return (NULL);
|
||
|
}
|
||
|
KASSERT(SCTP_BUF_NEXT(m) == NULL, ("%s: no chain allowed", __FUNCTION__));
|
||
|
}
|
||
|
#endif
|
||
|
#ifdef SCTP_MBUF_LOGGING
|
||
|
if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
|
||
|
sctp_log_mb(m, SCTP_MBUF_IALLOC);
|
||
|
}
|
||
|
#endif
|
||
|
#else
|
||
|
int mbuf_threshold;
|
||
|
unsigned int size;
|
||
|
|
||
|
if (want_header) {
|
||
|
MGETHDR(m, how, type);
|
||
|
size = MHLEN;
|
||
|
} else {
|
||
|
MGET(m, how, type);
|
||
|
size = MLEN;
|
||
|
}
|
||
|
if (m == NULL) {
|
||
|
return (NULL);
|
||
|
}
|
||
|
if (allonebuf == 0) {
|
||
|
mbuf_threshold = SCTP_BASE_SYSCTL(sctp_mbuf_threshold_count);
|
||
|
} else {
|
||
|
mbuf_threshold = 1;
|
||
|
}
|
||
|
|
||
|
if (space_needed > (unsigned int)(((mbuf_threshold - 1) * MLEN) + MHLEN)) {
|
||
|
MCLGET(m, how);
|
||
|
if (m == NULL) {
|
||
|
return (NULL);
|
||
|
}
|
||
|
if (SCTP_BUF_IS_EXTENDED(m) == 0) {
|
||
|
sctp_m_freem(m);
|
||
|
return (NULL);
|
||
|
}
|
||
|
size = SCTP_BUF_EXTEND_SIZE(m);
|
||
|
}
|
||
|
if (allonebuf != 0 && size < space_needed) {
|
||
|
m_freem(m);
|
||
|
return (NULL);
|
||
|
}
|
||
|
SCTP_BUF_LEN(m) = 0;
|
||
|
SCTP_BUF_NEXT(m) = SCTP_BUF_NEXT_PKT(m) = NULL;
|
||
|
#ifdef SCTP_MBUF_LOGGING
|
||
|
if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
|
||
|
sctp_log_mb(m, SCTP_MBUF_IALLOC);
|
||
|
}
|
||
|
#endif
|
||
|
#endif
|
||
|
return (m);
|
||
|
}
|
||
|
|
||
|
|
||
|
#ifdef SCTP_PACKET_LOGGING
|
||
|
void
|
||
|
sctp_packet_log(struct mbuf *m)
|
||
|
{
|
||
|
int *lenat, thisone;
|
||
|
void *copyto;
|
||
|
uint32_t *tick_tock;
|
||
|
int length;
|
||
|
int total_len;
|
||
|
int grabbed_lock = 0;
|
||
|
int value, newval, thisend, thisbegin;
|
||
|
/*
|
||
|
* Buffer layout.
|
||
|
* -sizeof this entry (total_len)
|
||
|
* -previous end (value)
|
||
|
* -ticks of log (ticks)
|
||
|
* o -ip packet
|
||
|
* o -as logged
|
||
|
* - where this started (thisbegin)
|
||
|
* x <--end points here
|
||
|
*/
|
||
|
length = SCTP_HEADER_LEN(m);
|
||
|
total_len = SCTP_SIZE32((length + (4 * sizeof(int))));
|
||
|
/* Log a packet to the buffer. */
|
||
|
if (total_len> SCTP_PACKET_LOG_SIZE) {
|
||
|
/* Can't log this packet I have not a buffer big enough */
|
||
|
return;
|
||
|
}
|
||
|
if (length < (int)(SCTP_MIN_V4_OVERHEAD + sizeof(struct sctp_cookie_ack_chunk))) {
|
||
|
return;
|
||
|
}
|
||
|
atomic_add_int(&SCTP_BASE_VAR(packet_log_writers), 1);
|
||
|
try_again:
|
||
|
if (SCTP_BASE_VAR(packet_log_writers) > SCTP_PKTLOG_WRITERS_NEED_LOCK) {
|
||
|
SCTP_IP_PKTLOG_LOCK();
|
||
|
grabbed_lock = 1;
|
||
|
again_locked:
|
||
|
value = SCTP_BASE_VAR(packet_log_end);
|
||
|
newval = SCTP_BASE_VAR(packet_log_end) + total_len;
|
||
|
if (newval >= SCTP_PACKET_LOG_SIZE) {
|
||
|
/* we wrapped */
|
||
|
thisbegin = 0;
|
||
|
thisend = total_len;
|
||
|
} else {
|
||
|
thisbegin = SCTP_BASE_VAR(packet_log_end);
|
||
|
thisend = newval;
|
||
|
}
|
||
|
if (!(atomic_cmpset_int(&SCTP_BASE_VAR(packet_log_end), value, thisend))) {
|
||
|
goto again_locked;
|
||
|
}
|
||
|
} else {
|
||
|
value = SCTP_BASE_VAR(packet_log_end);
|
||
|
newval = SCTP_BASE_VAR(packet_log_end) + total_len;
|
||
|
if (newval >= SCTP_PACKET_LOG_SIZE) {
|
||
|
/* we wrapped */
|
||
|
thisbegin = 0;
|
||
|
thisend = total_len;
|
||
|
} else {
|
||
|
thisbegin = SCTP_BASE_VAR(packet_log_end);
|
||
|
thisend = newval;
|
||
|
}
|
||
|
if (!(atomic_cmpset_int(&SCTP_BASE_VAR(packet_log_end), value, thisend))) {
|
||
|
goto try_again;
|
||
|
}
|
||
|
}
|
||
|
/* Sanity check */
|
||
|
if (thisend >= SCTP_PACKET_LOG_SIZE) {
|
||
|
SCTP_PRINTF("Insanity stops a log thisbegin:%d thisend:%d writers:%d lock:%d end:%d\n",
|
||
|
thisbegin,
|
||
|
thisend,
|
||
|
SCTP_BASE_VAR(packet_log_writers),
|
||
|
grabbed_lock,
|
||
|
SCTP_BASE_VAR(packet_log_end));
|
||
|
SCTP_BASE_VAR(packet_log_end) = 0;
|
||
|
goto no_log;
|
||
|
|
||
|
}
|
||
|
lenat = (int *)&SCTP_BASE_VAR(packet_log_buffer)[thisbegin];
|
||
|
*lenat = total_len;
|
||
|
lenat++;
|
||
|
*lenat = value;
|
||
|
lenat++;
|
||
|
tick_tock = (uint32_t *)lenat;
|
||
|
lenat++;
|
||
|
*tick_tock = sctp_get_tick_count();
|
||
|
copyto = (void *)lenat;
|
||
|
thisone = thisend - sizeof(int);
|
||
|
lenat = (int *)&SCTP_BASE_VAR(packet_log_buffer)[thisone];
|
||
|
*lenat = thisbegin;
|
||
|
if (grabbed_lock) {
|
||
|
SCTP_IP_PKTLOG_UNLOCK();
|
||
|
grabbed_lock = 0;
|
||
|
}
|
||
|
m_copydata(m, 0, length, (caddr_t)copyto);
|
||
|
no_log:
|
||
|
if (grabbed_lock) {
|
||
|
SCTP_IP_PKTLOG_UNLOCK();
|
||
|
}
|
||
|
atomic_subtract_int(&SCTP_BASE_VAR(packet_log_writers), 1);
|
||
|
}
|
||
|
|
||
|
|
||
|
int
|
||
|
sctp_copy_out_packet_log(uint8_t *target, int length)
|
||
|
{
|
||
|
/* We wind through the packet log starting at
|
||
|
* start copying up to length bytes out.
|
||
|
* We return the number of bytes copied.
|
||
|
*/
|
||
|
int tocopy, this_copy;
|
||
|
int *lenat;
|
||
|
int did_delay = 0;
|
||
|
|
||
|
tocopy = length;
|
||
|
if (length < (int)(2 * sizeof(int))) {
|
||
|
/* not enough room */
|
||
|
return (0);
|
||
|
}
|
||
|
if (SCTP_PKTLOG_WRITERS_NEED_LOCK) {
|
||
|
atomic_add_int(&SCTP_BASE_VAR(packet_log_writers), SCTP_PKTLOG_WRITERS_NEED_LOCK);
|
||
|
again:
|
||
|
if ((did_delay == 0) && (SCTP_BASE_VAR(packet_log_writers) != SCTP_PKTLOG_WRITERS_NEED_LOCK)) {
|
||
|
/* we delay here for just a moment hoping the writer(s) that were
|
||
|
* present when we entered will have left and we only have
|
||
|
* locking ones that will contend with us for the lock. This
|
||
|
* does not assure 100% access, but its good enough for
|
||
|
* a logging facility like this.
|
||
|
*/
|
||
|
did_delay = 1;
|
||
|
DELAY(10);
|
||
|
goto again;
|
||
|
}
|
||
|
}
|
||
|
SCTP_IP_PKTLOG_LOCK();
|
||
|
lenat = (int *)target;
|
||
|
*lenat = SCTP_BASE_VAR(packet_log_end);
|
||
|
lenat++;
|
||
|
this_copy = min((length - sizeof(int)), SCTP_PACKET_LOG_SIZE);
|
||
|
memcpy((void *)lenat, (void *)SCTP_BASE_VAR(packet_log_buffer), this_copy);
|
||
|
if (SCTP_PKTLOG_WRITERS_NEED_LOCK) {
|
||
|
atomic_subtract_int(&SCTP_BASE_VAR(packet_log_writers),
|
||
|
SCTP_PKTLOG_WRITERS_NEED_LOCK);
|
||
|
}
|
||
|
SCTP_IP_PKTLOG_UNLOCK();
|
||
|
return (this_copy + sizeof(int));
|
||
|
}
|
||
|
|
||
|
#endif
|