xref: /freebsd/sys/netinet/sctp_bsd_addr.c (revision 5a50eb6585ef8d1a40c8086bab8639cc56f00df9)
1f8829a4aSRandall Stewart /*-
251369649SPedro F. Giffuni  * SPDX-License-Identifier: BSD-3-Clause
351369649SPedro F. Giffuni  *
4b1006367SRandall Stewart  * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
5807aad63SMichael Tuexen  * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
6807aad63SMichael Tuexen  * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
7f8829a4aSRandall Stewart  *
8f8829a4aSRandall Stewart  * Redistribution and use in source and binary forms, with or without
9f8829a4aSRandall Stewart  * modification, are permitted provided that the following conditions are met:
10f8829a4aSRandall Stewart  *
11f8829a4aSRandall Stewart  * a) Redistributions of source code must retain the above copyright notice,
12f8829a4aSRandall Stewart  *    this list of conditions and the following disclaimer.
13f8829a4aSRandall Stewart  *
14f8829a4aSRandall Stewart  * b) Redistributions in binary form must reproduce the above copyright
15f8829a4aSRandall Stewart  *    notice, this list of conditions and the following disclaimer in
16f8829a4aSRandall Stewart  *    the documentation and/or other materials provided with the distribution.
17f8829a4aSRandall Stewart  *
18f8829a4aSRandall Stewart  * c) Neither the name of Cisco Systems, Inc. nor the names of its
19f8829a4aSRandall Stewart  *    contributors may be used to endorse or promote products derived
20f8829a4aSRandall Stewart  *    from this software without specific prior written permission.
21f8829a4aSRandall Stewart  *
22f8829a4aSRandall Stewart  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23f8829a4aSRandall Stewart  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
24f8829a4aSRandall Stewart  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25f8829a4aSRandall Stewart  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
26f8829a4aSRandall Stewart  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27f8829a4aSRandall Stewart  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28f8829a4aSRandall Stewart  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29f8829a4aSRandall Stewart  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30f8829a4aSRandall Stewart  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31f8829a4aSRandall Stewart  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
32f8829a4aSRandall Stewart  * THE POSSIBILITY OF SUCH DAMAGE.
33f8829a4aSRandall Stewart  */
34f8829a4aSRandall Stewart 
35f8829a4aSRandall Stewart #include <sys/cdefs.h>
36f8829a4aSRandall Stewart __FBSDID("$FreeBSD$");
37f8829a4aSRandall Stewart 
38f8829a4aSRandall Stewart #include <netinet/sctp_os.h>
39f8829a4aSRandall Stewart #include <netinet/sctp_var.h>
40f8829a4aSRandall Stewart #include <netinet/sctp_pcb.h>
41f8829a4aSRandall Stewart #include <netinet/sctp_header.h>
42f8829a4aSRandall Stewart #include <netinet/sctputil.h>
43f8829a4aSRandall Stewart #include <netinet/sctp_output.h>
44f8829a4aSRandall Stewart #include <netinet/sctp_bsd_addr.h>
45f8829a4aSRandall Stewart #include <netinet/sctp_uio.h>
46f8829a4aSRandall Stewart #include <netinet/sctputil.h>
47f8829a4aSRandall Stewart #include <netinet/sctp_timer.h>
48f8829a4aSRandall Stewart #include <netinet/sctp_asconf.h>
49d06c82f1SRandall Stewart #include <netinet/sctp_sysctl.h>
50f8829a4aSRandall Stewart #include <netinet/sctp_indata.h>
5142551e99SRandall Stewart #include <sys/unistd.h>
52f8829a4aSRandall Stewart 
53207304d4SRandall Stewart /* Declare all of our malloc named types */
54207304d4SRandall Stewart MALLOC_DEFINE(SCTP_M_MAP, "sctp_map", "sctp asoc map descriptor");
55207304d4SRandall Stewart MALLOC_DEFINE(SCTP_M_STRMI, "sctp_stri", "sctp stream in array");
56207304d4SRandall Stewart MALLOC_DEFINE(SCTP_M_STRMO, "sctp_stro", "sctp stream out array");
57207304d4SRandall Stewart MALLOC_DEFINE(SCTP_M_ASC_ADDR, "sctp_aadr", "sctp asconf address");
58207304d4SRandall Stewart MALLOC_DEFINE(SCTP_M_ASC_IT, "sctp_a_it", "sctp asconf iterator");
59207304d4SRandall Stewart MALLOC_DEFINE(SCTP_M_AUTH_CL, "sctp_atcl", "sctp auth chunklist");
60207304d4SRandall Stewart MALLOC_DEFINE(SCTP_M_AUTH_KY, "sctp_atky", "sctp auth key");
61207304d4SRandall Stewart MALLOC_DEFINE(SCTP_M_AUTH_HL, "sctp_athm", "sctp auth hmac list");
62207304d4SRandall Stewart MALLOC_DEFINE(SCTP_M_AUTH_IF, "sctp_athi", "sctp auth info");
63207304d4SRandall Stewart MALLOC_DEFINE(SCTP_M_STRESET, "sctp_stre", "sctp stream reset");
64207304d4SRandall Stewart MALLOC_DEFINE(SCTP_M_CMSG, "sctp_cmsg", "sctp CMSG buffer");
65207304d4SRandall Stewart MALLOC_DEFINE(SCTP_M_COPYAL, "sctp_cpal", "sctp copy all");
66207304d4SRandall Stewart MALLOC_DEFINE(SCTP_M_VRF, "sctp_vrf", "sctp vrf struct");
67207304d4SRandall Stewart MALLOC_DEFINE(SCTP_M_IFA, "sctp_ifa", "sctp ifa struct");
68207304d4SRandall Stewart MALLOC_DEFINE(SCTP_M_IFN, "sctp_ifn", "sctp ifn struct");
69207304d4SRandall Stewart MALLOC_DEFINE(SCTP_M_TIMW, "sctp_timw", "sctp time block");
70207304d4SRandall Stewart MALLOC_DEFINE(SCTP_M_MVRF, "sctp_mvrf", "sctp mvrf pcb list");
71207304d4SRandall Stewart MALLOC_DEFINE(SCTP_M_ITER, "sctp_iter", "sctp iterator control");
72207304d4SRandall Stewart MALLOC_DEFINE(SCTP_M_SOCKOPT, "sctp_socko", "sctp socket option");
73bfc46083SRandall Stewart MALLOC_DEFINE(SCTP_M_MCORE, "sctp_mcore", "sctp mcore queue");
74207304d4SRandall Stewart 
75f7517433SRandall Stewart /* Global NON-VNET structure that controls the iterator */
76f7517433SRandall Stewart struct iterator_control sctp_it_ctl;
77f7517433SRandall Stewart 
7842551e99SRandall Stewart void
7942551e99SRandall Stewart sctp_wakeup_iterator(void)
80f8829a4aSRandall Stewart {
81f7517433SRandall Stewart 	wakeup(&sctp_it_ctl.iterator_running);
82f8829a4aSRandall Stewart }
83f8829a4aSRandall Stewart 
8442551e99SRandall Stewart static void
857215cc1bSMichael Tuexen sctp_iterator_thread(void *v SCTP_UNUSED)
86f8829a4aSRandall Stewart {
8742551e99SRandall Stewart 	SCTP_IPI_ITERATOR_WQ_LOCK();
8887eac1ceSMichael Tuexen 	/* In FreeBSD this thread never terminates. */
897215cc1bSMichael Tuexen 	for (;;) {
90f7517433SRandall Stewart 		msleep(&sctp_it_ctl.iterator_running,
91f7517433SRandall Stewart 		    &sctp_it_ctl.ipi_iterator_wq_mtx,
92bf949ea2SRandall Stewart 		    0, "waiting_for_work", 0);
9342551e99SRandall Stewart 		sctp_iterator_worker();
94f8829a4aSRandall Stewart 	}
95f8829a4aSRandall Stewart }
96f8829a4aSRandall Stewart 
9742551e99SRandall Stewart void
9842551e99SRandall Stewart sctp_startup_iterator(void)
99f8829a4aSRandall Stewart {
100f4f34bdeSMichael Tuexen 	if (sctp_it_ctl.thread_proc) {
101f7517433SRandall Stewart 		/* You only get one */
102f7517433SRandall Stewart 		return;
103f7517433SRandall Stewart 	}
104c302aeb1SMichael Tuexen 	/* Initialize global locks here, thus only once. */
105c302aeb1SMichael Tuexen 	SCTP_ITERATOR_LOCK_INIT();
106c302aeb1SMichael Tuexen 	SCTP_IPI_ITERATOR_WQ_INIT();
107f7517433SRandall Stewart 	TAILQ_INIT(&sctp_it_ctl.iteratorhead);
108f4f34bdeSMichael Tuexen 	kproc_create(sctp_iterator_thread,
109f7517433SRandall Stewart 	    (void *)NULL,
110f7517433SRandall Stewart 	    &sctp_it_ctl.thread_proc,
111*5a50eb65SJohn Baldwin 	    0,
11242551e99SRandall Stewart 	    SCTP_KTHREAD_PAGES,
11342551e99SRandall Stewart 	    SCTP_KTRHEAD_NAME);
11442551e99SRandall Stewart }
115f8829a4aSRandall Stewart 
1165e2c2d87SRandall Stewart #ifdef INET6
117fc14de76SRandall Stewart 
11842551e99SRandall Stewart void
11942551e99SRandall Stewart sctp_gather_internal_ifa_flags(struct sctp_ifa *ifa)
120f8829a4aSRandall Stewart {
121f8829a4aSRandall Stewart 	struct in6_ifaddr *ifa6;
122f8829a4aSRandall Stewart 
12342551e99SRandall Stewart 	ifa6 = (struct in6_ifaddr *)ifa->ifa;
12442551e99SRandall Stewart 	ifa->flags = ifa6->ia6_flags;
125482444b4SRandall Stewart 	if (!MODULE_GLOBAL(ip6_use_deprecated)) {
12642551e99SRandall Stewart 		if (ifa->flags &
127f8829a4aSRandall Stewart 		    IN6_IFF_DEPRECATED) {
12842551e99SRandall Stewart 			ifa->localifa_flags |= SCTP_ADDR_IFA_UNUSEABLE;
12942551e99SRandall Stewart 		} else {
13042551e99SRandall Stewart 			ifa->localifa_flags &= ~SCTP_ADDR_IFA_UNUSEABLE;
131f8829a4aSRandall Stewart 		}
13242551e99SRandall Stewart 	} else {
13342551e99SRandall Stewart 		ifa->localifa_flags &= ~SCTP_ADDR_IFA_UNUSEABLE;
134f8829a4aSRandall Stewart 	}
13542551e99SRandall Stewart 	if (ifa->flags &
136f8829a4aSRandall Stewart 	    (IN6_IFF_DETACHED |
137f8829a4aSRandall Stewart 	    IN6_IFF_ANYCAST |
138f8829a4aSRandall Stewart 	    IN6_IFF_NOTREADY)) {
13942551e99SRandall Stewart 		ifa->localifa_flags |= SCTP_ADDR_IFA_UNUSEABLE;
140f8829a4aSRandall Stewart 	} else {
14142551e99SRandall Stewart 		ifa->localifa_flags &= ~SCTP_ADDR_IFA_UNUSEABLE;
142f8829a4aSRandall Stewart 	}
143f8829a4aSRandall Stewart }
144fc14de76SRandall Stewart #endif				/* INET6 */
14542551e99SRandall Stewart 
14642551e99SRandall Stewart static uint32_t
147b0471b4bSMichael Tuexen sctp_is_desired_interface_type(struct ifnet *ifn)
148b0471b4bSMichael Tuexen {
14942551e99SRandall Stewart 	int result;
150f8829a4aSRandall Stewart 
15142551e99SRandall Stewart 	/* check the interface type to see if it's one we care about */
152173be2b6SMichael Tuexen 	switch (ifn->if_type) {
15342551e99SRandall Stewart 	case IFT_ETHER:
15442551e99SRandall Stewart 	case IFT_ISO88023:
15542551e99SRandall Stewart 	case IFT_ISO88024:
15642551e99SRandall Stewart 	case IFT_ISO88025:
15742551e99SRandall Stewart 	case IFT_ISO88026:
15842551e99SRandall Stewart 	case IFT_STARLAN:
15942551e99SRandall Stewart 	case IFT_P10:
16042551e99SRandall Stewart 	case IFT_P80:
16142551e99SRandall Stewart 	case IFT_HY:
16242551e99SRandall Stewart 	case IFT_FDDI:
16342551e99SRandall Stewart 	case IFT_XETHER:
16442551e99SRandall Stewart 	case IFT_ISDNBASIC:
16542551e99SRandall Stewart 	case IFT_ISDNPRIMARY:
16642551e99SRandall Stewart 	case IFT_PTPSERIAL:
167851b7298SRandall Stewart 	case IFT_OTHER:
16842551e99SRandall Stewart 	case IFT_PPP:
16942551e99SRandall Stewart 	case IFT_LOOP:
17042551e99SRandall Stewart 	case IFT_SLIP:
171b3f1ea41SRandall Stewart 	case IFT_GIF:
1722b77dd01SMichael Tuexen 	case IFT_L2VLAN:
17370a03e88SMichael Tuexen 	case IFT_STF:
17442551e99SRandall Stewart 	case IFT_IP:
17542551e99SRandall Stewart 	case IFT_IPOVERCDLC:
17642551e99SRandall Stewart 	case IFT_IPOVERCLAW:
1777081943dSRandall Stewart 	case IFT_PROPVIRTUAL:	/* NetGraph Virtual too */
17842551e99SRandall Stewart 	case IFT_VIRTUALIPADDRESS:
17942551e99SRandall Stewart 		result = 1;
18042551e99SRandall Stewart 		break;
18142551e99SRandall Stewart 	default:
18242551e99SRandall Stewart 		result = 0;
183f8829a4aSRandall Stewart 	}
184f8829a4aSRandall Stewart 
18542551e99SRandall Stewart 	return (result);
18642551e99SRandall Stewart }
187f8829a4aSRandall Stewart 
18842551e99SRandall Stewart static void
18942551e99SRandall Stewart sctp_init_ifns_for_vrf(int vrfid)
190f8829a4aSRandall Stewart {
19142551e99SRandall Stewart 	/*
19242551e99SRandall Stewart 	 * Here we must apply ANY locks needed by the IFN we access and also
19342551e99SRandall Stewart 	 * make sure we lock any IFA that exists as we float through the
19442551e99SRandall Stewart 	 * list of IFA's
19542551e99SRandall Stewart 	 */
196b8a6e03fSGleb Smirnoff 	struct epoch_tracker et;
197f8829a4aSRandall Stewart 	struct ifnet *ifn;
198f8829a4aSRandall Stewart 	struct ifaddr *ifa;
19942551e99SRandall Stewart 	struct sctp_ifa *sctp_ifa;
20042551e99SRandall Stewart 	uint32_t ifa_flags;
201e6194c2eSMichael Tuexen #ifdef INET6
202e6194c2eSMichael Tuexen 	struct in6_ifaddr *ifa6;
203e6194c2eSMichael Tuexen #endif
204e6194c2eSMichael Tuexen 
2058518270eSMichael Tuexen 	IFNET_RLOCK();
206b8a6e03fSGleb Smirnoff 	NET_EPOCH_ENTER(et);
2074f6c66ccSMatt Macy 	CK_STAILQ_FOREACH(ifn, &MODULE_GLOBAL(ifnet), if_link) {
208173be2b6SMichael Tuexen 		if (sctp_is_desired_interface_type(ifn) == 0) {
209173be2b6SMichael Tuexen 			/* non desired type */
210173be2b6SMichael Tuexen 			continue;
211173be2b6SMichael Tuexen 		}
212d7c5a620SMatt Macy 		CK_STAILQ_FOREACH(ifa, &ifn->if_addrhead, ifa_link) {
21342551e99SRandall Stewart 			if (ifa->ifa_addr == NULL) {
214f8829a4aSRandall Stewart 				continue;
215f8829a4aSRandall Stewart 			}
216e6194c2eSMichael Tuexen 			switch (ifa->ifa_addr->sa_family) {
217e6194c2eSMichael Tuexen #ifdef INET
218e6194c2eSMichael Tuexen 			case AF_INET:
219e6194c2eSMichael Tuexen 				if (((struct sockaddr_in *)ifa->ifa_addr)->sin_addr.s_addr == 0) {
220f8829a4aSRandall Stewart 					continue;
221f8829a4aSRandall Stewart 				}
222e6194c2eSMichael Tuexen 				break;
223e6194c2eSMichael Tuexen #endif
224e6194c2eSMichael Tuexen #ifdef INET6
225e6194c2eSMichael Tuexen 			case AF_INET6:
22642551e99SRandall Stewart 				if (IN6_IS_ADDR_UNSPECIFIED(&((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr)) {
22742551e99SRandall Stewart 					/* skip unspecifed addresses */
228f8829a4aSRandall Stewart 					continue;
229f8829a4aSRandall Stewart 				}
230e6194c2eSMichael Tuexen 				break;
231e6194c2eSMichael Tuexen #endif
232e6194c2eSMichael Tuexen 			default:
23342551e99SRandall Stewart 				continue;
234f8829a4aSRandall Stewart 			}
235e6194c2eSMichael Tuexen 			switch (ifa->ifa_addr->sa_family) {
236e6194c2eSMichael Tuexen #ifdef INET
237e6194c2eSMichael Tuexen 			case AF_INET:
238e6194c2eSMichael Tuexen 				ifa_flags = 0;
239e6194c2eSMichael Tuexen 				break;
240e6194c2eSMichael Tuexen #endif
241e6194c2eSMichael Tuexen #ifdef INET6
242e6194c2eSMichael Tuexen 			case AF_INET6:
24342551e99SRandall Stewart 				ifa6 = (struct in6_ifaddr *)ifa;
24442551e99SRandall Stewart 				ifa_flags = ifa6->ia6_flags;
245e6194c2eSMichael Tuexen 				break;
246e6194c2eSMichael Tuexen #endif
247e6194c2eSMichael Tuexen 			default:
24842551e99SRandall Stewart 				ifa_flags = 0;
249e6194c2eSMichael Tuexen 				break;
25042551e99SRandall Stewart 			}
25142551e99SRandall Stewart 			sctp_ifa = sctp_add_addr_to_vrf(vrfid,
25242551e99SRandall Stewart 			    (void *)ifn,
25342551e99SRandall Stewart 			    ifn->if_index,
25442551e99SRandall Stewart 			    ifn->if_type,
25542551e99SRandall Stewart 			    ifn->if_xname,
25642551e99SRandall Stewart 			    (void *)ifa,
25742551e99SRandall Stewart 			    ifa->ifa_addr,
258b3f1ea41SRandall Stewart 			    ifa_flags,
259b3f1ea41SRandall Stewart 			    0);
26042551e99SRandall Stewart 			if (sctp_ifa) {
26142551e99SRandall Stewart 				sctp_ifa->localifa_flags &= ~SCTP_ADDR_DEFER_USE;
26242551e99SRandall Stewart 			}
26342551e99SRandall Stewart 		}
26442551e99SRandall Stewart 	}
265b8a6e03fSGleb Smirnoff 	NET_EPOCH_EXIT(et);
2668518270eSMichael Tuexen 	IFNET_RUNLOCK();
26742551e99SRandall Stewart }
268f8829a4aSRandall Stewart 
26942551e99SRandall Stewart void
27042551e99SRandall Stewart sctp_init_vrf_list(int vrfid)
27142551e99SRandall Stewart {
27242551e99SRandall Stewart 	if (vrfid > SCTP_MAX_VRF_ID)
27342551e99SRandall Stewart 		/* can't do that */
27442551e99SRandall Stewart 		return;
27542551e99SRandall Stewart 
27642551e99SRandall Stewart 	/* Don't care about return here */
27742551e99SRandall Stewart 	(void)sctp_allocate_vrf(vrfid);
27842551e99SRandall Stewart 
279f8829a4aSRandall Stewart 	/*
28042551e99SRandall Stewart 	 * Now we need to build all the ifn's for this vrf and there
28142551e99SRandall Stewart 	 * addresses
282f8829a4aSRandall Stewart 	 */
28342551e99SRandall Stewart 	sctp_init_ifns_for_vrf(vrfid);
284f8829a4aSRandall Stewart }
28542551e99SRandall Stewart 
28642551e99SRandall Stewart void
28742551e99SRandall Stewart sctp_addr_change(struct ifaddr *ifa, int cmd)
28842551e99SRandall Stewart {
28942551e99SRandall Stewart 	uint32_t ifa_flags = 0;
29042551e99SRandall Stewart 
2912b1c7de4SMichael Tuexen 	if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
2922b1c7de4SMichael Tuexen 		return;
2932b1c7de4SMichael Tuexen 	}
29442551e99SRandall Stewart 	/*
29542551e99SRandall Stewart 	 * BSD only has one VRF, if this changes we will need to hook in the
296cd0a4ff6SPedro F. Giffuni 	 * right things here to get the id to pass to the address management
29742551e99SRandall Stewart 	 * routine.
29842551e99SRandall Stewart 	 */
299b3f1ea41SRandall Stewart 	if (SCTP_BASE_VAR(first_time) == 0) {
30042551e99SRandall Stewart 		/* Special test to see if my ::1 will showup with this */
301b3f1ea41SRandall Stewart 		SCTP_BASE_VAR(first_time) = 1;
30242551e99SRandall Stewart 		sctp_init_ifns_for_vrf(SCTP_DEFAULT_VRFID);
303f8829a4aSRandall Stewart 	}
3040053ed28SMichael Tuexen 
30542551e99SRandall Stewart 	if ((cmd != RTM_ADD) && (cmd != RTM_DELETE)) {
30642551e99SRandall Stewart 		/* don't know what to do with this */
30742551e99SRandall Stewart 		return;
308f8829a4aSRandall Stewart 	}
3090053ed28SMichael Tuexen 
31042551e99SRandall Stewart 	if (ifa->ifa_addr == NULL) {
31142551e99SRandall Stewart 		return;
31242551e99SRandall Stewart 	}
313173be2b6SMichael Tuexen 	if (sctp_is_desired_interface_type(ifa->ifa_ifp) == 0) {
314173be2b6SMichael Tuexen 		/* non desired type */
315173be2b6SMichael Tuexen 		return;
316173be2b6SMichael Tuexen 	}
317e6194c2eSMichael Tuexen 	switch (ifa->ifa_addr->sa_family) {
318e6194c2eSMichael Tuexen #ifdef INET
319e6194c2eSMichael Tuexen 	case AF_INET:
320e6194c2eSMichael Tuexen 		if (((struct sockaddr_in *)ifa->ifa_addr)->sin_addr.s_addr == 0) {
32142551e99SRandall Stewart 			return;
32242551e99SRandall Stewart 		}
323e6194c2eSMichael Tuexen 		break;
324e6194c2eSMichael Tuexen #endif
325e6194c2eSMichael Tuexen #ifdef INET6
326e6194c2eSMichael Tuexen 	case AF_INET6:
327b3f1ea41SRandall Stewart 		ifa_flags = ((struct in6_ifaddr *)ifa)->ia6_flags;
32842551e99SRandall Stewart 		if (IN6_IS_ADDR_UNSPECIFIED(&((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr)) {
32942551e99SRandall Stewart 			/* skip unspecifed addresses */
33042551e99SRandall Stewart 			return;
33142551e99SRandall Stewart 		}
332e6194c2eSMichael Tuexen 		break;
333e6194c2eSMichael Tuexen #endif
334e6194c2eSMichael Tuexen 	default:
335e6194c2eSMichael Tuexen 		/* non inet/inet6 skip */
33642551e99SRandall Stewart 		return;
337f8829a4aSRandall Stewart 	}
33842551e99SRandall Stewart 	if (cmd == RTM_ADD) {
3393c8c191bSMichael Tuexen 		(void)sctp_add_addr_to_vrf(SCTP_DEFAULT_VRFID, (void *)ifa->ifa_ifp,
340173be2b6SMichael Tuexen 		    ifa->ifa_ifp->if_index, ifa->ifa_ifp->if_type, ifa->ifa_ifp->if_xname,
341d06c82f1SRandall Stewart 		    (void *)ifa, ifa->ifa_addr, ifa_flags, 1);
342b3f1ea41SRandall Stewart 	} else {
343851b7298SRandall Stewart 		sctp_del_addr_from_vrf(SCTP_DEFAULT_VRFID, ifa->ifa_addr,
344851b7298SRandall Stewart 		    ifa->ifa_ifp->if_index,
345173be2b6SMichael Tuexen 		    ifa->ifa_ifp->if_xname);
346173be2b6SMichael Tuexen 
34742551e99SRandall Stewart 		/*
34842551e99SRandall Stewart 		 * We don't bump refcount here so when it completes the
34942551e99SRandall Stewart 		 * final delete will happen.
35042551e99SRandall Stewart 		 */
35142551e99SRandall Stewart 	}
352d06c82f1SRandall Stewart }
35342551e99SRandall Stewart 
354b3f1ea41SRandall Stewart void
355d6e23cf0SMichael Tuexen sctp_addr_change_event_handler(void *arg __unused, struct ifaddr *ifa, int cmd)
356d6e23cf0SMichael Tuexen {
357d6e23cf0SMichael Tuexen 	sctp_addr_change(ifa, cmd);
358d6e23cf0SMichael Tuexen }
359d6e23cf0SMichael Tuexen 
360d06c82f1SRandall Stewart struct mbuf *
361d06c82f1SRandall Stewart sctp_get_mbuf_for_msg(unsigned int space_needed, int want_header,
362d06c82f1SRandall Stewart     int how, int allonebuf, int type)
363d06c82f1SRandall Stewart {
364d06c82f1SRandall Stewart 	struct mbuf *m = NULL;
36542551e99SRandall Stewart 
366d06c82f1SRandall Stewart 	m = m_getm2(NULL, space_needed, how, type, want_header ? M_PKTHDR : 0);
367d06c82f1SRandall Stewart 	if (m == NULL) {
368d06c82f1SRandall Stewart 		/* bad, no memory */
369d06c82f1SRandall Stewart 		return (m);
37042551e99SRandall Stewart 	}
371d06c82f1SRandall Stewart 	if (allonebuf) {
372296d0b94SMichael Tuexen 		if (SCTP_BUF_SIZE(m) < space_needed) {
373d06c82f1SRandall Stewart 			m_freem(m);
374d06c82f1SRandall Stewart 			return (NULL);
375d06c82f1SRandall Stewart 		}
3769f2d6263SMichael Tuexen 		KASSERT(SCTP_BUF_NEXT(m) == NULL, ("%s: no chain allowed", __func__));
377d06c82f1SRandall Stewart 	}
378d06c82f1SRandall Stewart #ifdef SCTP_MBUF_LOGGING
379b3f1ea41SRandall Stewart 	if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
380d06c82f1SRandall Stewart 		sctp_log_mb(m, SCTP_MBUF_IALLOC);
381d06c82f1SRandall Stewart 	}
382d06c82f1SRandall Stewart #endif
383d06c82f1SRandall Stewart 	return (m);
384f8829a4aSRandall Stewart }
385207304d4SRandall Stewart 
386207304d4SRandall Stewart #ifdef SCTP_PACKET_LOGGING
387207304d4SRandall Stewart void
388f9384252SMichael Tuexen sctp_packet_log(struct mbuf *m)
389207304d4SRandall Stewart {
3900696e120SRandall Stewart 	int *lenat, thisone;
391207304d4SRandall Stewart 	void *copyto;
392207304d4SRandall Stewart 	uint32_t *tick_tock;
393f9384252SMichael Tuexen 	int length;
3940696e120SRandall Stewart 	int total_len;
3950696e120SRandall Stewart 	int grabbed_lock = 0;
3960696e120SRandall Stewart 	int value, newval, thisend, thisbegin;
397207304d4SRandall Stewart 
3980696e120SRandall Stewart 	/*
3990696e120SRandall Stewart 	 * Buffer layout. -sizeof this entry (total_len) -previous end
4000696e120SRandall Stewart 	 * (value) -ticks of log      (ticks) o -ip packet o -as logged -
4010696e120SRandall Stewart 	 * where this started (thisbegin) x <--end points here
4020696e120SRandall Stewart 	 */
403f9384252SMichael Tuexen 	length = SCTP_HEADER_LEN(m);
4040696e120SRandall Stewart 	total_len = SCTP_SIZE32((length + (4 * sizeof(int))));
405207304d4SRandall Stewart 	/* Log a packet to the buffer. */
406207304d4SRandall Stewart 	if (total_len > SCTP_PACKET_LOG_SIZE) {
407207304d4SRandall Stewart 		/* Can't log this packet I have not a buffer big enough */
408207304d4SRandall Stewart 		return;
409207304d4SRandall Stewart 	}
410b3f1ea41SRandall Stewart 	if (length < (int)(SCTP_MIN_V4_OVERHEAD + sizeof(struct sctp_cookie_ack_chunk))) {
411207304d4SRandall Stewart 		return;
412207304d4SRandall Stewart 	}
413b3f1ea41SRandall Stewart 	atomic_add_int(&SCTP_BASE_VAR(packet_log_writers), 1);
4140696e120SRandall Stewart try_again:
415b3f1ea41SRandall Stewart 	if (SCTP_BASE_VAR(packet_log_writers) > SCTP_PKTLOG_WRITERS_NEED_LOCK) {
416207304d4SRandall Stewart 		SCTP_IP_PKTLOG_LOCK();
4170696e120SRandall Stewart 		grabbed_lock = 1;
4180696e120SRandall Stewart again_locked:
419b3f1ea41SRandall Stewart 		value = SCTP_BASE_VAR(packet_log_end);
420b3f1ea41SRandall Stewart 		newval = SCTP_BASE_VAR(packet_log_end) + total_len;
4210696e120SRandall Stewart 		if (newval >= SCTP_PACKET_LOG_SIZE) {
4220696e120SRandall Stewart 			/* we wrapped */
4230696e120SRandall Stewart 			thisbegin = 0;
4240696e120SRandall Stewart 			thisend = total_len;
4250696e120SRandall Stewart 		} else {
426b3f1ea41SRandall Stewart 			thisbegin = SCTP_BASE_VAR(packet_log_end);
4270696e120SRandall Stewart 			thisend = newval;
4280696e120SRandall Stewart 		}
429b3f1ea41SRandall Stewart 		if (!(atomic_cmpset_int(&SCTP_BASE_VAR(packet_log_end), value, thisend))) {
4300696e120SRandall Stewart 			goto again_locked;
4310696e120SRandall Stewart 		}
4320696e120SRandall Stewart 	} else {
433b3f1ea41SRandall Stewart 		value = SCTP_BASE_VAR(packet_log_end);
434b3f1ea41SRandall Stewart 		newval = SCTP_BASE_VAR(packet_log_end) + total_len;
4350696e120SRandall Stewart 		if (newval >= SCTP_PACKET_LOG_SIZE) {
4360696e120SRandall Stewart 			/* we wrapped */
4370696e120SRandall Stewart 			thisbegin = 0;
4380696e120SRandall Stewart 			thisend = total_len;
4390696e120SRandall Stewart 		} else {
440b3f1ea41SRandall Stewart 			thisbegin = SCTP_BASE_VAR(packet_log_end);
4410696e120SRandall Stewart 			thisend = newval;
4420696e120SRandall Stewart 		}
443b3f1ea41SRandall Stewart 		if (!(atomic_cmpset_int(&SCTP_BASE_VAR(packet_log_end), value, thisend))) {
4440696e120SRandall Stewart 			goto try_again;
4450696e120SRandall Stewart 		}
4460696e120SRandall Stewart 	}
4470696e120SRandall Stewart 	/* Sanity check */
4480696e120SRandall Stewart 	if (thisend >= SCTP_PACKET_LOG_SIZE) {
449cd3fd531SMichael Tuexen 		SCTP_PRINTF("Insanity stops a log thisbegin:%d thisend:%d writers:%d lock:%d end:%d\n",
4500696e120SRandall Stewart 		    thisbegin,
4510696e120SRandall Stewart 		    thisend,
452b3f1ea41SRandall Stewart 		    SCTP_BASE_VAR(packet_log_writers),
4530696e120SRandall Stewart 		    grabbed_lock,
454b3f1ea41SRandall Stewart 		    SCTP_BASE_VAR(packet_log_end));
455b3f1ea41SRandall Stewart 		SCTP_BASE_VAR(packet_log_end) = 0;
4560696e120SRandall Stewart 		goto no_log;
457207304d4SRandall Stewart 	}
458b3f1ea41SRandall Stewart 	lenat = (int *)&SCTP_BASE_VAR(packet_log_buffer)[thisbegin];
459207304d4SRandall Stewart 	*lenat = total_len;
460207304d4SRandall Stewart 	lenat++;
4610696e120SRandall Stewart 	*lenat = value;
4620696e120SRandall Stewart 	lenat++;
463207304d4SRandall Stewart 	tick_tock = (uint32_t *)lenat;
464207304d4SRandall Stewart 	lenat++;
465207304d4SRandall Stewart 	*tick_tock = sctp_get_tick_count();
466207304d4SRandall Stewart 	copyto = (void *)lenat;
4670696e120SRandall Stewart 	thisone = thisend - sizeof(int);
468b3f1ea41SRandall Stewart 	lenat = (int *)&SCTP_BASE_VAR(packet_log_buffer)[thisone];
4690696e120SRandall Stewart 	*lenat = thisbegin;
4700696e120SRandall Stewart 	if (grabbed_lock) {
471207304d4SRandall Stewart 		SCTP_IP_PKTLOG_UNLOCK();
4720696e120SRandall Stewart 		grabbed_lock = 0;
4730696e120SRandall Stewart 	}
474207304d4SRandall Stewart 	m_copydata(m, 0, length, (caddr_t)copyto);
4750696e120SRandall Stewart no_log:
4760696e120SRandall Stewart 	if (grabbed_lock) {
4770696e120SRandall Stewart 		SCTP_IP_PKTLOG_UNLOCK();
4780696e120SRandall Stewart 	}
479b3f1ea41SRandall Stewart 	atomic_subtract_int(&SCTP_BASE_VAR(packet_log_writers), 1);
480207304d4SRandall Stewart }
481207304d4SRandall Stewart 
482207304d4SRandall Stewart int
483207304d4SRandall Stewart sctp_copy_out_packet_log(uint8_t *target, int length)
484207304d4SRandall Stewart {
485207304d4SRandall Stewart 	/*
486207304d4SRandall Stewart 	 * We wind through the packet log starting at start copying up to
487207304d4SRandall Stewart 	 * length bytes out. We return the number of bytes copied.
488207304d4SRandall Stewart 	 */
4890696e120SRandall Stewart 	int tocopy, this_copy;
4900696e120SRandall Stewart 	int *lenat;
4910696e120SRandall Stewart 	int did_delay = 0;
492207304d4SRandall Stewart 
493207304d4SRandall Stewart 	tocopy = length;
494b3f1ea41SRandall Stewart 	if (length < (int)(2 * sizeof(int))) {
4950696e120SRandall Stewart 		/* not enough room */
496207304d4SRandall Stewart 		return (0);
497207304d4SRandall Stewart 	}
4980696e120SRandall Stewart 	if (SCTP_PKTLOG_WRITERS_NEED_LOCK) {
499b3f1ea41SRandall Stewart 		atomic_add_int(&SCTP_BASE_VAR(packet_log_writers), SCTP_PKTLOG_WRITERS_NEED_LOCK);
5000696e120SRandall Stewart again:
501b3f1ea41SRandall Stewart 		if ((did_delay == 0) && (SCTP_BASE_VAR(packet_log_writers) != SCTP_PKTLOG_WRITERS_NEED_LOCK)) {
502207304d4SRandall Stewart 			/*
5030696e120SRandall Stewart 			 * we delay here for just a moment hoping the
5040696e120SRandall Stewart 			 * writer(s) that were present when we entered will
5050696e120SRandall Stewart 			 * have left and we only have locking ones that will
5060696e120SRandall Stewart 			 * contend with us for the lock. This does not
5070696e120SRandall Stewart 			 * assure 100% access, but its good enough for a
5080696e120SRandall Stewart 			 * logging facility like this.
509207304d4SRandall Stewart 			 */
5100696e120SRandall Stewart 			did_delay = 1;
5110696e120SRandall Stewart 			DELAY(10);
5120696e120SRandall Stewart 			goto again;
513207304d4SRandall Stewart 		}
514207304d4SRandall Stewart 	}
5150696e120SRandall Stewart 	SCTP_IP_PKTLOG_LOCK();
5160696e120SRandall Stewart 	lenat = (int *)target;
517b3f1ea41SRandall Stewart 	*lenat = SCTP_BASE_VAR(packet_log_end);
5180696e120SRandall Stewart 	lenat++;
51919d8ca2eSRandall Stewart 	this_copy = min((length - sizeof(int)), SCTP_PACKET_LOG_SIZE);
520b3f1ea41SRandall Stewart 	memcpy((void *)lenat, (void *)SCTP_BASE_VAR(packet_log_buffer), this_copy);
5210696e120SRandall Stewart 	if (SCTP_PKTLOG_WRITERS_NEED_LOCK) {
522b3f1ea41SRandall Stewart 		atomic_subtract_int(&SCTP_BASE_VAR(packet_log_writers),
52319d8ca2eSRandall Stewart 		    SCTP_PKTLOG_WRITERS_NEED_LOCK);
5240696e120SRandall Stewart 	}
5250696e120SRandall Stewart 	SCTP_IP_PKTLOG_UNLOCK();
5260696e120SRandall Stewart 	return (this_copy + sizeof(int));
527207304d4SRandall Stewart }
528207304d4SRandall Stewart 
529207304d4SRandall Stewart #endif
530