1#ifndef __sctp_lock_bsd_h__
2#define __sctp_lock_bsd_h__
3/*-
4 * Copyright (c) 2001-2006, Cisco Systems, Inc. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
8 *
9 * a) Redistributions of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
11 *
12 * b) Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the distribution.
15 *
16 * c) Neither the name of Cisco Systems, Inc. nor the names of its
17 * contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33/*
34 * General locking concepts: The goal of our locking is to of course provide
35 * consistency and yet minimize overhead. We will attempt to use
36 * non-recursive locks which are supposed to be quite inexpensive. Now in
37 * order to do this the goal is that most functions are not aware of locking.
38 * Once we have a TCB we lock it and unlock when we are through. This means
39 * that the TCB lock is kind-of a "global" lock when working on an
40 * association. Caution must be used when asserting a TCB_LOCK since if we
41 * recurse we deadlock.
42 *
43 * Most other locks (INP and INFO) attempt to localize the locking i.e. we try
44 * to contain the lock and unlock within the function that needs to lock it.
45 * This sometimes mean we do extra locks and unlocks and lose a bit of
46 * efficency, but if the performance statements about non-recursive locks are
47 * true this should not be a problem. One issue that arises with this only
48 * lock when needed is that if an implicit association setup is done we have
49 * a problem. If at the time I lookup an association I have NULL in the tcb
50 * return, by the time I call to create the association some other processor
51 * could have created it. This is what the CREATE lock on the endpoint.
52 * Places where we will be implicitly creating the association OR just
53 * creating an association (the connect call) will assert the CREATE_INP
54 * lock. This will assure us that during all the lookup of INP and INFO if
55 * another creator is also locking/looking up we can gate the two to
56 * synchronize. So the CREATE_INP lock is also another one we must use
57 * extreme caution in locking to make sure we don't hit a re-entrancy issue.
58 *
59 * For non FreeBSD 5.x we provide a bunch of EMPTY lock macros so we can
60 * blatantly put locks everywhere and they reduce to nothing on
61 * NetBSD/OpenBSD and FreeBSD 4.x
62 *
63 */
64
65/*
66 * When working with the global SCTP lists we lock and unlock the INP_INFO
67 * lock. So when we go to lookup an association we will want to do a
68 * SCTP_INP_INFO_RLOCK() and then when we want to add a new association to
69 * the sctppcbinfo list's we will do a SCTP_INP_INFO_WLOCK().
70 */
71#include <sys/cdefs.h>
72__FBSDID("$FreeBSD: head/sys/netinet/sctp_lock_bsd.h 167598 2007-03-15 11:27:14Z rrs $");
73
74
75extern struct sctp_foo_stuff sctp_logoff[];
76extern int sctp_logoff_stuff;
77
78#define SCTP_IPI_COUNT_INIT()
79
80#define SCTP_STATLOG_INIT_LOCK()
81#define SCTP_STATLOG_LOCK()
82#define SCTP_STATLOG_UNLOCK()
83#define SCTP_STATLOG_DESTROY()
84
85#define SCTP_STATLOG_GETREF(x) { \
86 x = atomic_fetchadd_int(&global_sctp_cwnd_log_at, 1); \
87 if(x == SCTP_STAT_LOG_SIZE) { \
88 global_sctp_cwnd_log_at = 1; \
89 x = 0; \
90 global_sctp_cwnd_log_rolled = 1; \
91 } \
92}
93
94
95#define SCTP_INP_INFO_LOCK_INIT() \
96 mtx_init(&sctppcbinfo.ipi_ep_mtx, "sctp-info", "inp_info", MTX_DEF)
97
98
99#define SCTP_INP_INFO_RLOCK() do { \
100 mtx_lock(&sctppcbinfo.ipi_ep_mtx); \
101} while (0)
102
103
104#define SCTP_INP_INFO_WLOCK() do { \
105 mtx_lock(&sctppcbinfo.ipi_ep_mtx); \
106} while (0)
107
108
109#define SCTP_IPI_ADDR_INIT() \
110 mtx_init(&sctppcbinfo.ipi_addr_mtx, "sctp-addr", "sctp_addr", MTX_DEF)
111
112#define SCTP_IPI_ADDR_DESTROY() \
113 mtx_destroy(&sctppcbinfo.ipi_addr_mtx)
114
115#define SCTP_IPI_ADDR_LOCK() do { \
116 mtx_lock(&sctppcbinfo.ipi_addr_mtx); \
117} while (0)
118
119#define SCTP_IPI_ADDR_UNLOCK() mtx_unlock(&sctppcbinfo.ipi_addr_mtx)
120
121
122
123#define SCTP_IPI_ITERATOR_WQ_INIT() \
124 mtx_init(&sctppcbinfo.ipi_iterator_wq_mtx, "sctp-it-wq", "sctp_it_wq", MTX_DEF)
125
126#define SCTP_IPI_ITERATOR_WQ_DESTROY() \
127 mtx_destroy(&sctppcbinfo.ipi_iterator_wq_mtx)
128
129#define SCTP_IPI_ITERATOR_WQ_LOCK() do { \
130 mtx_lock(&sctppcbinfo.ipi_iterator_wq_mtx); \
131} while (0)
132
133#define SCTP_IPI_ITERATOR_WQ_UNLOCK() mtx_unlock(&sctppcbinfo.ipi_iterator_wq_mtx)
134
135
136
137
138
139#define SCTP_INP_INFO_RUNLOCK() mtx_unlock(&sctppcbinfo.ipi_ep_mtx)
140#define SCTP_INP_INFO_WUNLOCK() mtx_unlock(&sctppcbinfo.ipi_ep_mtx)
141
142/*
143 * The INP locks we will use for locking an SCTP endpoint, so for example if
144 * we want to change something at the endpoint level for example random_store
145 * or cookie secrets we lock the INP level.
146 */
147
148#define SCTP_INP_READ_INIT(_inp) \
149 mtx_init(&(_inp)->inp_rdata_mtx, "sctp-read", "inpr", MTX_DEF | MTX_DUPOK)
150
151#define SCTP_INP_READ_DESTROY(_inp) \
152 mtx_destroy(&(_inp)->inp_rdata_mtx)
153
154#define SCTP_INP_READ_LOCK(_inp) do { \
155 mtx_lock(&(_inp)->inp_rdata_mtx); \
156} while (0)
157
158
159#define SCTP_INP_READ_UNLOCK(_inp) mtx_unlock(&(_inp)->inp_rdata_mtx)
160
161
162#define SCTP_INP_LOCK_INIT(_inp) \
163 mtx_init(&(_inp)->inp_mtx, "sctp-inp", "inp", MTX_DEF | MTX_DUPOK)
164#define SCTP_ASOC_CREATE_LOCK_INIT(_inp) \
165 mtx_init(&(_inp)->inp_create_mtx, "sctp-create", "inp_create", \
166 MTX_DEF | MTX_DUPOK)
167
168#define SCTP_INP_LOCK_DESTROY(_inp) \
169 mtx_destroy(&(_inp)->inp_mtx)
170
171#define SCTP_ASOC_CREATE_LOCK_DESTROY(_inp) \
172 mtx_destroy(&(_inp)->inp_create_mtx)
173
174
175#ifdef SCTP_LOCK_LOGGING
176#define SCTP_INP_RLOCK(_inp) do { \
177 sctp_log_lock(_inp, (struct sctp_tcb *)NULL, SCTP_LOG_LOCK_INP);\
178 mtx_lock(&(_inp)->inp_mtx); \
179} while (0)
180
181#define SCTP_INP_WLOCK(_inp) do { \
182 sctp_log_lock(_inp, (struct sctp_tcb *)NULL, SCTP_LOG_LOCK_INP);\
183 mtx_lock(&(_inp)->inp_mtx); \
184} while (0)
185
186#else
187
188#define SCTP_INP_RLOCK(_inp) do { \
189 mtx_lock(&(_inp)->inp_mtx); \
190} while (0)
191
192#define SCTP_INP_WLOCK(_inp) do { \
193 mtx_lock(&(_inp)->inp_mtx); \
194} while (0)
195
196#endif
197
198
199#define SCTP_TCB_SEND_LOCK_INIT(_tcb) \
200 mtx_init(&(_tcb)->tcb_send_mtx, "sctp-send-tcb", "tcbs", MTX_DEF | MTX_DUPOK)
201
202#define SCTP_TCB_SEND_LOCK_DESTROY(_tcb) mtx_destroy(&(_tcb)->tcb_send_mtx)
203
204#define SCTP_TCB_SEND_LOCK(_tcb) do { \
205 mtx_lock(&(_tcb)->tcb_send_mtx); \
206} while (0)
207
208#define SCTP_TCB_SEND_UNLOCK(_tcb) mtx_unlock(&(_tcb)->tcb_send_mtx)
209
210#define SCTP_INP_INCR_REF(_inp) atomic_add_int(&((_inp)->refcount), 1)
211#define SCTP_INP_DECR_REF(_inp) atomic_add_int(&((_inp)->refcount), -1)
212
213
214#ifdef SCTP_LOCK_LOGGING
215#define SCTP_ASOC_CREATE_LOCK(_inp) \
216 do { \
217 sctp_log_lock(_inp, (struct sctp_tcb *)NULL, SCTP_LOG_LOCK_CREATE); \
218 mtx_lock(&(_inp)->inp_create_mtx); \
219 } while (0)
220#else
221
222#define SCTP_ASOC_CREATE_LOCK(_inp) \
223 do { \
224 mtx_lock(&(_inp)->inp_create_mtx); \
225 } while (0)
226#endif
227
228#define SCTP_INP_RUNLOCK(_inp) mtx_unlock(&(_inp)->inp_mtx)
229#define SCTP_INP_WUNLOCK(_inp) mtx_unlock(&(_inp)->inp_mtx)
230#define SCTP_ASOC_CREATE_UNLOCK(_inp) mtx_unlock(&(_inp)->inp_create_mtx)
231
232/*
233 * For the majority of things (once we have found the association) we will
234 * lock the actual association mutex. This will protect all the assoiciation
235 * level queues and streams and such. We will need to lock the socket layer
236 * when we stuff data up into the receiving sb_mb. I.e. we will need to do an
237 * extra SOCKBUF_LOCK(&so->so_rcv) even though the association is locked.
238 */
239
240#define SCTP_TCB_LOCK_INIT(_tcb) \
241 mtx_init(&(_tcb)->tcb_mtx, "sctp-tcb", "tcb", MTX_DEF | MTX_DUPOK)
242
243#define SCTP_TCB_LOCK_DESTROY(_tcb) mtx_destroy(&(_tcb)->tcb_mtx)
244
245#ifdef SCTP_LOCK_LOGGING
246#define SCTP_TCB_LOCK(_tcb) do { \
247 sctp_log_lock(_tcb->sctp_ep, _tcb, SCTP_LOG_LOCK_TCB); \
248 mtx_lock(&(_tcb)->tcb_mtx); \
249} while (0)
250
251#else
252#define SCTP_TCB_LOCK(_tcb) do { \
253 mtx_lock(&(_tcb)->tcb_mtx); \
254} while (0)
255
256#endif
257
258
259#define SCTP_TCB_TRYLOCK(_tcb) mtx_trylock(&(_tcb)->tcb_mtx)
260
261#define SCTP_TCB_UNLOCK(_tcb) mtx_unlock(&(_tcb)->tcb_mtx)
262
263#define SCTP_TCB_UNLOCK_IFOWNED(_tcb) do { \
264 if (mtx_owned(&(_tcb)->tcb_mtx)) \
265 mtx_unlock(&(_tcb)->tcb_mtx); \
266 } while (0)
267
268
269
270#ifdef INVARIANTS
271#define SCTP_TCB_LOCK_ASSERT(_tcb) do { \
272 if (mtx_owned(&(_tcb)->tcb_mtx) == 0) \
273 panic("Don't own TCB lock"); \
274 } while (0)
275#else
276#define SCTP_TCB_LOCK_ASSERT(_tcb)
277#endif
278
279#define SCTP_ITERATOR_LOCK_INIT() \
280 mtx_init(&sctppcbinfo.it_mtx, "sctp-it", "iterator", MTX_DEF)
281
282#ifdef INVARIANTS
283#define SCTP_ITERATOR_LOCK() \
284 do { \
285 if (mtx_owned(&sctppcbinfo.it_mtx)) \
286 panic("Iterator Lock"); \
287 mtx_lock(&sctppcbinfo.it_mtx); \
288 } while (0)
289#else
290#define SCTP_ITERATOR_LOCK() \
291 do { \
292 mtx_lock(&sctppcbinfo.it_mtx); \
293 } while (0)
294
295#endif
296
297#define SCTP_ITERATOR_UNLOCK() mtx_unlock(&sctppcbinfo.it_mtx)
298#define SCTP_ITERATOR_LOCK_DESTROY() mtx_destroy(&sctppcbinfo.it_mtx)
299
300
301#define SCTP_INCR_EP_COUNT() \
302 do { \
303 atomic_add_int(&sctppcbinfo.ipi_count_ep, 1); \
304 } while (0)
305
306#define SCTP_DECR_EP_COUNT() \
307 do { \
308 atomic_add_int(&sctppcbinfo.ipi_count_ep,-1); \
309 } while (0)
310
311#define SCTP_INCR_ASOC_COUNT() \
312 do { \
313 atomic_add_int(&sctppcbinfo.ipi_count_asoc, 1); \
314 } while (0)
315
316#define SCTP_DECR_ASOC_COUNT() \
317 do { \
318 atomic_add_int(&sctppcbinfo.ipi_count_asoc, -1); \
319 } while (0)
320
321#define SCTP_INCR_LADDR_COUNT() \
322 do { \
323 atomic_add_int(&sctppcbinfo.ipi_count_laddr, 1); \
324 } while (0)
325
326#define SCTP_DECR_LADDR_COUNT() \
327 do { \
328 atomic_add_int(&sctppcbinfo.ipi_count_laddr, -1); \
329 } while (0)
330
331#define SCTP_INCR_RADDR_COUNT() \
332 do { \
333 atomic_add_int(&sctppcbinfo.ipi_count_raddr,1); \
334 } while (0)
335
336#define SCTP_DECR_RADDR_COUNT() \
337 do { \
338 atomic_add_int(&sctppcbinfo.ipi_count_raddr,-1); \
339 } while (0)
340
341#define SCTP_INCR_CHK_COUNT() \
342 do { \
343 atomic_add_int(&sctppcbinfo.ipi_count_chunk, 1); \
344 } while (0)
345
346#define SCTP_DECR_CHK_COUNT() \
347 do { \
348 if(sctppcbinfo.ipi_count_chunk == 0) \
349 panic("chunk count to 0?"); \
350 atomic_add_int(&sctppcbinfo.ipi_count_chunk,-1); \
351 } while (0)
352
353#define SCTP_INCR_READQ_COUNT() \
354 do { \
355 atomic_add_int(&sctppcbinfo.ipi_count_readq,1); \
356 } while (0)
357
358#define SCTP_DECR_READQ_COUNT() \
359 do { \
360 atomic_add_int(&sctppcbinfo.ipi_count_readq, -1); \
361 } while (0)
362
363#define SCTP_INCR_STRMOQ_COUNT() \
364 do { \
365 atomic_add_int(&sctppcbinfo.ipi_count_strmoq, 1); \
366 } while (0)
367
368#define SCTP_DECR_STRMOQ_COUNT() \
369 do { \
370 atomic_add_int(&sctppcbinfo.ipi_count_strmoq,-1); \
371 } while (0)
372
373
374
375
376
377#endif
2#define __sctp_lock_bsd_h__
3/*-
4 * Copyright (c) 2001-2006, Cisco Systems, Inc. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
8 *
9 * a) Redistributions of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
11 *
12 * b) Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the distribution.
15 *
16 * c) Neither the name of Cisco Systems, Inc. nor the names of its
17 * contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33/*
34 * General locking concepts: The goal of our locking is to of course provide
35 * consistency and yet minimize overhead. We will attempt to use
36 * non-recursive locks which are supposed to be quite inexpensive. Now in
37 * order to do this the goal is that most functions are not aware of locking.
38 * Once we have a TCB we lock it and unlock when we are through. This means
39 * that the TCB lock is kind-of a "global" lock when working on an
40 * association. Caution must be used when asserting a TCB_LOCK since if we
41 * recurse we deadlock.
42 *
43 * Most other locks (INP and INFO) attempt to localize the locking i.e. we try
44 * to contain the lock and unlock within the function that needs to lock it.
45 * This sometimes mean we do extra locks and unlocks and lose a bit of
46 * efficency, but if the performance statements about non-recursive locks are
47 * true this should not be a problem. One issue that arises with this only
48 * lock when needed is that if an implicit association setup is done we have
49 * a problem. If at the time I lookup an association I have NULL in the tcb
50 * return, by the time I call to create the association some other processor
51 * could have created it. This is what the CREATE lock on the endpoint.
52 * Places where we will be implicitly creating the association OR just
53 * creating an association (the connect call) will assert the CREATE_INP
54 * lock. This will assure us that during all the lookup of INP and INFO if
55 * another creator is also locking/looking up we can gate the two to
56 * synchronize. So the CREATE_INP lock is also another one we must use
57 * extreme caution in locking to make sure we don't hit a re-entrancy issue.
58 *
59 * For non FreeBSD 5.x we provide a bunch of EMPTY lock macros so we can
60 * blatantly put locks everywhere and they reduce to nothing on
61 * NetBSD/OpenBSD and FreeBSD 4.x
62 *
63 */
64
65/*
66 * When working with the global SCTP lists we lock and unlock the INP_INFO
67 * lock. So when we go to lookup an association we will want to do a
68 * SCTP_INP_INFO_RLOCK() and then when we want to add a new association to
69 * the sctppcbinfo list's we will do a SCTP_INP_INFO_WLOCK().
70 */
71#include <sys/cdefs.h>
72__FBSDID("$FreeBSD: head/sys/netinet/sctp_lock_bsd.h 167598 2007-03-15 11:27:14Z rrs $");
73
74
75extern struct sctp_foo_stuff sctp_logoff[];
76extern int sctp_logoff_stuff;
77
78#define SCTP_IPI_COUNT_INIT()
79
80#define SCTP_STATLOG_INIT_LOCK()
81#define SCTP_STATLOG_LOCK()
82#define SCTP_STATLOG_UNLOCK()
83#define SCTP_STATLOG_DESTROY()
84
85#define SCTP_STATLOG_GETREF(x) { \
86 x = atomic_fetchadd_int(&global_sctp_cwnd_log_at, 1); \
87 if(x == SCTP_STAT_LOG_SIZE) { \
88 global_sctp_cwnd_log_at = 1; \
89 x = 0; \
90 global_sctp_cwnd_log_rolled = 1; \
91 } \
92}
93
94
95#define SCTP_INP_INFO_LOCK_INIT() \
96 mtx_init(&sctppcbinfo.ipi_ep_mtx, "sctp-info", "inp_info", MTX_DEF)
97
98
99#define SCTP_INP_INFO_RLOCK() do { \
100 mtx_lock(&sctppcbinfo.ipi_ep_mtx); \
101} while (0)
102
103
104#define SCTP_INP_INFO_WLOCK() do { \
105 mtx_lock(&sctppcbinfo.ipi_ep_mtx); \
106} while (0)
107
108
109#define SCTP_IPI_ADDR_INIT() \
110 mtx_init(&sctppcbinfo.ipi_addr_mtx, "sctp-addr", "sctp_addr", MTX_DEF)
111
112#define SCTP_IPI_ADDR_DESTROY() \
113 mtx_destroy(&sctppcbinfo.ipi_addr_mtx)
114
115#define SCTP_IPI_ADDR_LOCK() do { \
116 mtx_lock(&sctppcbinfo.ipi_addr_mtx); \
117} while (0)
118
119#define SCTP_IPI_ADDR_UNLOCK() mtx_unlock(&sctppcbinfo.ipi_addr_mtx)
120
121
122
123#define SCTP_IPI_ITERATOR_WQ_INIT() \
124 mtx_init(&sctppcbinfo.ipi_iterator_wq_mtx, "sctp-it-wq", "sctp_it_wq", MTX_DEF)
125
126#define SCTP_IPI_ITERATOR_WQ_DESTROY() \
127 mtx_destroy(&sctppcbinfo.ipi_iterator_wq_mtx)
128
129#define SCTP_IPI_ITERATOR_WQ_LOCK() do { \
130 mtx_lock(&sctppcbinfo.ipi_iterator_wq_mtx); \
131} while (0)
132
133#define SCTP_IPI_ITERATOR_WQ_UNLOCK() mtx_unlock(&sctppcbinfo.ipi_iterator_wq_mtx)
134
135
136
137
138
139#define SCTP_INP_INFO_RUNLOCK() mtx_unlock(&sctppcbinfo.ipi_ep_mtx)
140#define SCTP_INP_INFO_WUNLOCK() mtx_unlock(&sctppcbinfo.ipi_ep_mtx)
141
142/*
143 * The INP locks we will use for locking an SCTP endpoint, so for example if
144 * we want to change something at the endpoint level for example random_store
145 * or cookie secrets we lock the INP level.
146 */
147
148#define SCTP_INP_READ_INIT(_inp) \
149 mtx_init(&(_inp)->inp_rdata_mtx, "sctp-read", "inpr", MTX_DEF | MTX_DUPOK)
150
151#define SCTP_INP_READ_DESTROY(_inp) \
152 mtx_destroy(&(_inp)->inp_rdata_mtx)
153
154#define SCTP_INP_READ_LOCK(_inp) do { \
155 mtx_lock(&(_inp)->inp_rdata_mtx); \
156} while (0)
157
158
159#define SCTP_INP_READ_UNLOCK(_inp) mtx_unlock(&(_inp)->inp_rdata_mtx)
160
161
162#define SCTP_INP_LOCK_INIT(_inp) \
163 mtx_init(&(_inp)->inp_mtx, "sctp-inp", "inp", MTX_DEF | MTX_DUPOK)
164#define SCTP_ASOC_CREATE_LOCK_INIT(_inp) \
165 mtx_init(&(_inp)->inp_create_mtx, "sctp-create", "inp_create", \
166 MTX_DEF | MTX_DUPOK)
167
168#define SCTP_INP_LOCK_DESTROY(_inp) \
169 mtx_destroy(&(_inp)->inp_mtx)
170
171#define SCTP_ASOC_CREATE_LOCK_DESTROY(_inp) \
172 mtx_destroy(&(_inp)->inp_create_mtx)
173
174
175#ifdef SCTP_LOCK_LOGGING
176#define SCTP_INP_RLOCK(_inp) do { \
177 sctp_log_lock(_inp, (struct sctp_tcb *)NULL, SCTP_LOG_LOCK_INP);\
178 mtx_lock(&(_inp)->inp_mtx); \
179} while (0)
180
181#define SCTP_INP_WLOCK(_inp) do { \
182 sctp_log_lock(_inp, (struct sctp_tcb *)NULL, SCTP_LOG_LOCK_INP);\
183 mtx_lock(&(_inp)->inp_mtx); \
184} while (0)
185
186#else
187
188#define SCTP_INP_RLOCK(_inp) do { \
189 mtx_lock(&(_inp)->inp_mtx); \
190} while (0)
191
192#define SCTP_INP_WLOCK(_inp) do { \
193 mtx_lock(&(_inp)->inp_mtx); \
194} while (0)
195
196#endif
197
198
199#define SCTP_TCB_SEND_LOCK_INIT(_tcb) \
200 mtx_init(&(_tcb)->tcb_send_mtx, "sctp-send-tcb", "tcbs", MTX_DEF | MTX_DUPOK)
201
202#define SCTP_TCB_SEND_LOCK_DESTROY(_tcb) mtx_destroy(&(_tcb)->tcb_send_mtx)
203
204#define SCTP_TCB_SEND_LOCK(_tcb) do { \
205 mtx_lock(&(_tcb)->tcb_send_mtx); \
206} while (0)
207
208#define SCTP_TCB_SEND_UNLOCK(_tcb) mtx_unlock(&(_tcb)->tcb_send_mtx)
209
210#define SCTP_INP_INCR_REF(_inp) atomic_add_int(&((_inp)->refcount), 1)
211#define SCTP_INP_DECR_REF(_inp) atomic_add_int(&((_inp)->refcount), -1)
212
213
214#ifdef SCTP_LOCK_LOGGING
215#define SCTP_ASOC_CREATE_LOCK(_inp) \
216 do { \
217 sctp_log_lock(_inp, (struct sctp_tcb *)NULL, SCTP_LOG_LOCK_CREATE); \
218 mtx_lock(&(_inp)->inp_create_mtx); \
219 } while (0)
220#else
221
222#define SCTP_ASOC_CREATE_LOCK(_inp) \
223 do { \
224 mtx_lock(&(_inp)->inp_create_mtx); \
225 } while (0)
226#endif
227
228#define SCTP_INP_RUNLOCK(_inp) mtx_unlock(&(_inp)->inp_mtx)
229#define SCTP_INP_WUNLOCK(_inp) mtx_unlock(&(_inp)->inp_mtx)
230#define SCTP_ASOC_CREATE_UNLOCK(_inp) mtx_unlock(&(_inp)->inp_create_mtx)
231
232/*
233 * For the majority of things (once we have found the association) we will
234 * lock the actual association mutex. This will protect all the assoiciation
235 * level queues and streams and such. We will need to lock the socket layer
236 * when we stuff data up into the receiving sb_mb. I.e. we will need to do an
237 * extra SOCKBUF_LOCK(&so->so_rcv) even though the association is locked.
238 */
239
240#define SCTP_TCB_LOCK_INIT(_tcb) \
241 mtx_init(&(_tcb)->tcb_mtx, "sctp-tcb", "tcb", MTX_DEF | MTX_DUPOK)
242
243#define SCTP_TCB_LOCK_DESTROY(_tcb) mtx_destroy(&(_tcb)->tcb_mtx)
244
245#ifdef SCTP_LOCK_LOGGING
246#define SCTP_TCB_LOCK(_tcb) do { \
247 sctp_log_lock(_tcb->sctp_ep, _tcb, SCTP_LOG_LOCK_TCB); \
248 mtx_lock(&(_tcb)->tcb_mtx); \
249} while (0)
250
251#else
252#define SCTP_TCB_LOCK(_tcb) do { \
253 mtx_lock(&(_tcb)->tcb_mtx); \
254} while (0)
255
256#endif
257
258
259#define SCTP_TCB_TRYLOCK(_tcb) mtx_trylock(&(_tcb)->tcb_mtx)
260
261#define SCTP_TCB_UNLOCK(_tcb) mtx_unlock(&(_tcb)->tcb_mtx)
262
263#define SCTP_TCB_UNLOCK_IFOWNED(_tcb) do { \
264 if (mtx_owned(&(_tcb)->tcb_mtx)) \
265 mtx_unlock(&(_tcb)->tcb_mtx); \
266 } while (0)
267
268
269
270#ifdef INVARIANTS
271#define SCTP_TCB_LOCK_ASSERT(_tcb) do { \
272 if (mtx_owned(&(_tcb)->tcb_mtx) == 0) \
273 panic("Don't own TCB lock"); \
274 } while (0)
275#else
276#define SCTP_TCB_LOCK_ASSERT(_tcb)
277#endif
278
279#define SCTP_ITERATOR_LOCK_INIT() \
280 mtx_init(&sctppcbinfo.it_mtx, "sctp-it", "iterator", MTX_DEF)
281
282#ifdef INVARIANTS
283#define SCTP_ITERATOR_LOCK() \
284 do { \
285 if (mtx_owned(&sctppcbinfo.it_mtx)) \
286 panic("Iterator Lock"); \
287 mtx_lock(&sctppcbinfo.it_mtx); \
288 } while (0)
289#else
290#define SCTP_ITERATOR_LOCK() \
291 do { \
292 mtx_lock(&sctppcbinfo.it_mtx); \
293 } while (0)
294
295#endif
296
297#define SCTP_ITERATOR_UNLOCK() mtx_unlock(&sctppcbinfo.it_mtx)
298#define SCTP_ITERATOR_LOCK_DESTROY() mtx_destroy(&sctppcbinfo.it_mtx)
299
300
301#define SCTP_INCR_EP_COUNT() \
302 do { \
303 atomic_add_int(&sctppcbinfo.ipi_count_ep, 1); \
304 } while (0)
305
306#define SCTP_DECR_EP_COUNT() \
307 do { \
308 atomic_add_int(&sctppcbinfo.ipi_count_ep,-1); \
309 } while (0)
310
311#define SCTP_INCR_ASOC_COUNT() \
312 do { \
313 atomic_add_int(&sctppcbinfo.ipi_count_asoc, 1); \
314 } while (0)
315
316#define SCTP_DECR_ASOC_COUNT() \
317 do { \
318 atomic_add_int(&sctppcbinfo.ipi_count_asoc, -1); \
319 } while (0)
320
321#define SCTP_INCR_LADDR_COUNT() \
322 do { \
323 atomic_add_int(&sctppcbinfo.ipi_count_laddr, 1); \
324 } while (0)
325
326#define SCTP_DECR_LADDR_COUNT() \
327 do { \
328 atomic_add_int(&sctppcbinfo.ipi_count_laddr, -1); \
329 } while (0)
330
331#define SCTP_INCR_RADDR_COUNT() \
332 do { \
333 atomic_add_int(&sctppcbinfo.ipi_count_raddr,1); \
334 } while (0)
335
336#define SCTP_DECR_RADDR_COUNT() \
337 do { \
338 atomic_add_int(&sctppcbinfo.ipi_count_raddr,-1); \
339 } while (0)
340
341#define SCTP_INCR_CHK_COUNT() \
342 do { \
343 atomic_add_int(&sctppcbinfo.ipi_count_chunk, 1); \
344 } while (0)
345
346#define SCTP_DECR_CHK_COUNT() \
347 do { \
348 if(sctppcbinfo.ipi_count_chunk == 0) \
349 panic("chunk count to 0?"); \
350 atomic_add_int(&sctppcbinfo.ipi_count_chunk,-1); \
351 } while (0)
352
353#define SCTP_INCR_READQ_COUNT() \
354 do { \
355 atomic_add_int(&sctppcbinfo.ipi_count_readq,1); \
356 } while (0)
357
358#define SCTP_DECR_READQ_COUNT() \
359 do { \
360 atomic_add_int(&sctppcbinfo.ipi_count_readq, -1); \
361 } while (0)
362
363#define SCTP_INCR_STRMOQ_COUNT() \
364 do { \
365 atomic_add_int(&sctppcbinfo.ipi_count_strmoq, 1); \
366 } while (0)
367
368#define SCTP_DECR_STRMOQ_COUNT() \
369 do { \
370 atomic_add_int(&sctppcbinfo.ipi_count_strmoq,-1); \
371 } while (0)
372
373
374
375
376
377#endif