1 /*-
2 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *
7 * a) Redistributions of source code must retain the above copyright notice,
8 * this list of conditions and the following disclaimer.
9 *
10 * b) Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in
12 * the documentation and/or other materials provided with the distribution.
13 *
14 * c) Neither the name of Cisco Systems, Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived
16 * from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
20 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
28 * THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 /* $KAME: sctp_var.h,v 1.24 2005/03/06 16:04:19 itojun Exp $ */
32
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
35
36 #ifndef _NETINET_SCTP_VAR_H_
37 #define _NETINET_SCTP_VAR_H_
38
39 #include <netinet/sctp_uio.h>
40
41 #if defined(_KERNEL)
42
43 extern struct pr_usrreqs sctp_usrreqs;
44
45
46 #define sctp_feature_on(inp, feature) (inp->sctp_features |= feature)
47 #define sctp_feature_off(inp, feature) (inp->sctp_features &= ~feature)
48 #define sctp_is_feature_on(inp, feature) (inp->sctp_features & feature)
49 #define sctp_is_feature_off(inp, feature) ((inp->sctp_features & feature) == 0)
50
51 /* managing mobility_feature in inpcb (by micchie) */
52 #define sctp_mobility_feature_on(inp, feature) (inp->sctp_mobility_features |= feature)
53 #define sctp_mobility_feature_off(inp, feature) (inp->sctp_mobility_features &= ~feature)
54 #define sctp_is_mobility_feature_on(inp, feature) (inp->sctp_mobility_features & feature)
55 #define sctp_is_mobility_feature_off(inp, feature) ((inp->sctp_mobility_features & feature) == 0)
56
57 #define sctp_maxspace(sb) (max((sb)->sb_hiwat,SCTP_MINIMAL_RWND))
58
59 #define sctp_sbspace(asoc, sb) ((long) ((sctp_maxspace(sb) > (asoc)->sb_cc) ? (sctp_maxspace(sb) - (asoc)->sb_cc) : 0))
60
61 #define sctp_sbspace_failedmsgs(sb) ((long) ((sctp_maxspace(sb) > (sb)->sb_cc) ? (sctp_maxspace(sb) - (sb)->sb_cc) : 0))
62
63 #define sctp_sbspace_sub(a,b) ((a > b) ? (a - b) : 0)
64
65 /*
66 * I tried to cache the readq entries at one point. But the reality
67 * is that it did not add any performance since this meant we had to
68 * lock the STCB on read. And at that point once you have to do an
69 * extra lock, it really does not matter if the lock is in the ZONE
70 * stuff or in our code. Note that this same problem would occur with
71 * an mbuf cache as well so it is not really worth doing, at least
72 * right now :-D
73 */
74
75 #define sctp_free_a_readq(_stcb, _readq) { \
76 SCTP_ZONE_FREE(sctppcbinfo.ipi_zone_readq, (_readq)); \
77 SCTP_DECR_READQ_COUNT(); \
78 }
79
80 #define sctp_alloc_a_readq(_stcb, _readq) { \
81 (_readq) = SCTP_ZONE_GET(sctppcbinfo.ipi_zone_readq, struct sctp_queued_to_read); \
82 if ((_readq)) { \
83 SCTP_INCR_READQ_COUNT(); \
84 } \
85 }
86
87 #define sctp_free_a_strmoq(_stcb, _strmoq) { \
88 SCTP_ZONE_FREE(sctppcbinfo.ipi_zone_strmoq, (_strmoq)); \
89 SCTP_DECR_STRMOQ_COUNT(); \
90 }
91
92 #define sctp_alloc_a_strmoq(_stcb, _strmoq) { \
93 (_strmoq) = SCTP_ZONE_GET(sctppcbinfo.ipi_zone_strmoq, struct sctp_stream_queue_pending); \
94 if ((_strmoq)) { \
95 SCTP_INCR_STRMOQ_COUNT(); \
96 } \
97 }
98
99
100 #define sctp_free_a_chunk(_stcb, _chk) { \
101 if(_stcb) { \
102 SCTP_TCB_LOCK_ASSERT((_stcb)); \
103 if ((_chk)->whoTo) { \
104 sctp_free_remote_addr((_chk)->whoTo); \
105 (_chk)->whoTo = NULL; \
106 } \
107 if (((_stcb)->asoc.free_chunk_cnt > sctp_asoc_free_resc_limit) || \
108 (sctppcbinfo.ipi_free_chunks > sctp_system_free_resc_limit)) { \
109 SCTP_ZONE_FREE(sctppcbinfo.ipi_zone_chunk, (_chk)); \
110 SCTP_DECR_CHK_COUNT(); \
111 } else { \
112 TAILQ_INSERT_TAIL(&(_stcb)->asoc.free_chunks, (_chk), sctp_next); \
113 (_stcb)->asoc.free_chunk_cnt++; \
114 atomic_add_int(&sctppcbinfo.ipi_free_chunks, 1); \
115 } \
116 } else { \
117 SCTP_ZONE_FREE(sctppcbinfo.ipi_zone_chunk, (_chk)); \
118 SCTP_DECR_CHK_COUNT(); \
119 } \
120 }
121
122 #define sctp_alloc_a_chunk(_stcb, _chk) { \
123 if (TAILQ_EMPTY(&(_stcb)->asoc.free_chunks)) { \
124 (_chk) = SCTP_ZONE_GET(sctppcbinfo.ipi_zone_chunk, struct sctp_tmit_chunk); \
125 if ((_chk)) { \
126 SCTP_INCR_CHK_COUNT(); \
127 (_chk)->whoTo = NULL; \
128 } \
129 } else { \
130 (_chk) = TAILQ_FIRST(&(_stcb)->asoc.free_chunks); \
131 TAILQ_REMOVE(&(_stcb)->asoc.free_chunks, (_chk), sctp_next); \
132 atomic_subtract_int(&sctppcbinfo.ipi_free_chunks, 1); \
133 SCTP_STAT_INCR(sctps_cached_chk); \
134 (_stcb)->asoc.free_chunk_cnt--; \
135 } \
136 }
137
138
139
140 #define sctp_free_remote_addr(__net) { \
141 if ((__net)) { \
142 if (atomic_fetchadd_int(&(__net)->ref_count, -1) == 1) { \
143 (void)SCTP_OS_TIMER_STOP(&(__net)->rxt_timer.timer); \
144 (void)SCTP_OS_TIMER_STOP(&(__net)->pmtu_timer.timer); \
145 (void)SCTP_OS_TIMER_STOP(&(__net)->fr_timer.timer); \
146 if ((__net)->ro.ro_rt) { \
147 RTFREE((__net)->ro.ro_rt); \
148 (__net)->ro.ro_rt = NULL; \
149 } \
150 if ((__net)->src_addr_selected) { \
151 sctp_free_ifa((__net)->ro._s_addr); \
152 (__net)->ro._s_addr = NULL; \
153 } \
154 (__net)->src_addr_selected = 0; \
155 (__net)->dest_state = SCTP_ADDR_NOT_REACHABLE; \
156 SCTP_ZONE_FREE(sctppcbinfo.ipi_zone_net, (__net)); \
157 SCTP_DECR_RADDR_COUNT(); \
158 } \
159 } \
160 }
161
162 #define sctp_sbfree(ctl, stcb, sb, m) { \
163 uint32_t val; \
164 val = atomic_fetchadd_int(&(sb)->sb_cc,-(SCTP_BUF_LEN((m)))); \
165 if (val < SCTP_BUF_LEN((m))) { \
166 panic("sb_cc goes negative"); \
167 } \
168 val = atomic_fetchadd_int(&(sb)->sb_mbcnt,-(MSIZE)); \
169 if (val < MSIZE) { \
170 panic("sb_mbcnt goes negative"); \
171 } \
172 if (((ctl)->do_not_ref_stcb == 0) && stcb) {\
173 val = atomic_fetchadd_int(&(stcb)->asoc.sb_cc,-(SCTP_BUF_LEN((m)))); \
174 if (val < SCTP_BUF_LEN((m))) {\
175 panic("stcb->sb_cc goes negative"); \
176 } \
177 val = atomic_fetchadd_int(&(stcb)->asoc.my_rwnd_control_len,-(MSIZE)); \
178 if (val < MSIZE) { \
179 panic("asoc->mbcnt goes negative"); \
180 } \
181 } \
182 if (SCTP_BUF_TYPE(m) != MT_DATA && SCTP_BUF_TYPE(m) != MT_HEADER && \
183 SCTP_BUF_TYPE(m) != MT_OOBDATA) \
184 atomic_subtract_int(&(sb)->sb_ctl,SCTP_BUF_LEN((m))); \
185 }
186
187
188 #define sctp_sballoc(stcb, sb, m) { \
189 atomic_add_int(&(sb)->sb_cc,SCTP_BUF_LEN((m))); \
190 atomic_add_int(&(sb)->sb_mbcnt, MSIZE); \
191 if (stcb) { \
192 atomic_add_int(&(stcb)->asoc.sb_cc,SCTP_BUF_LEN((m))); \
193 atomic_add_int(&(stcb)->asoc.my_rwnd_control_len, MSIZE); \
194 } \
195 if (SCTP_BUF_TYPE(m) != MT_DATA && SCTP_BUF_TYPE(m) != MT_HEADER && \
196 SCTP_BUF_TYPE(m) != MT_OOBDATA) \
197 atomic_add_int(&(sb)->sb_ctl,SCTP_BUF_LEN((m))); \
198 }
199
200
201 #define sctp_ucount_incr(val) { \
202 val++; \
203 }
204
205 #define sctp_ucount_decr(val) { \
206 if (val > 0) { \
207 val--; \
208 } else { \
209 val = 0; \
210 } \
211 }
212
213 #define sctp_mbuf_crush(data) do { \
214 struct mbuf *_m; \
215 _m = (data); \
216 while(_m && (SCTP_BUF_LEN(_m) == 0)) { \
217 (data) = SCTP_BUF_NEXT(_m); \
218 SCTP_BUF_NEXT(_m) = NULL; \
219 sctp_m_free(_m); \
220 _m = (data); \
221 } \
222 } while (0)
223
224 #define sctp_flight_size_decrease(tp1) do { \
225 if (tp1->whoTo->flight_size >= tp1->book_size) \
226 tp1->whoTo->flight_size -= tp1->book_size; \
227 else \
228 tp1->whoTo->flight_size = 0; \
229 } while (0)
230
231 #define sctp_flight_size_increase(tp1) do { \
232 (tp1)->whoTo->flight_size += (tp1)->book_size; \
233 } while (0)
234
235 #ifdef SCTP_FS_SPEC_LOG
236 #define sctp_total_flight_decrease(stcb, tp1) do { \
237 if(stcb->asoc.fs_index > SCTP_FS_SPEC_LOG_SIZE) \
238 stcb->asoc.fs_index = 0;\
239 stcb->asoc.fslog[stcb->asoc.fs_index].total_flight = stcb->asoc.total_flight; \
240 stcb->asoc.fslog[stcb->asoc.fs_index].tsn = tp1->rec.data.TSN_seq; \
241 stcb->asoc.fslog[stcb->asoc.fs_index].book = tp1->book_size; \
242 stcb->asoc.fslog[stcb->asoc.fs_index].sent = tp1->sent; \
243 stcb->asoc.fslog[stcb->asoc.fs_index].incr = 0; \
244 stcb->asoc.fslog[stcb->asoc.fs_index].decr = 1; \
245 stcb->asoc.fs_index++; \
246 tp1->window_probe = 0; \
247 if (stcb->asoc.total_flight >= tp1->book_size) { \
248 stcb->asoc.total_flight -= tp1->book_size; \
249 if (stcb->asoc.total_flight_count > 0) \
250 stcb->asoc.total_flight_count--; \
251 } else { \
252 stcb->asoc.total_flight = 0; \
253 stcb->asoc.total_flight_count = 0; \
254 } \
255 } while (0)
256
257 #define sctp_total_flight_increase(stcb, tp1) do { \
258 if(stcb->asoc.fs_index > SCTP_FS_SPEC_LOG_SIZE) \
259 stcb->asoc.fs_index = 0;\
260 stcb->asoc.fslog[stcb->asoc.fs_index].total_flight = stcb->asoc.total_flight; \
261 stcb->asoc.fslog[stcb->asoc.fs_index].tsn = tp1->rec.data.TSN_seq; \
262 stcb->asoc.fslog[stcb->asoc.fs_index].book = tp1->book_size; \
263 stcb->asoc.fslog[stcb->asoc.fs_index].sent = tp1->sent; \
264 stcb->asoc.fslog[stcb->asoc.fs_index].incr = 1; \
265 stcb->asoc.fslog[stcb->asoc.fs_index].decr = 0; \
266 stcb->asoc.fs_index++; \
267 (stcb)->asoc.total_flight_count++; \
268 (stcb)->asoc.total_flight += (tp1)->book_size; \
269 } while (0)
270
271 #else
272
273 #define sctp_total_flight_decrease(stcb, tp1) do { \
274 if (stcb->asoc.total_flight >= tp1->book_size) { \
275 stcb->asoc.total_flight -= tp1->book_size; \
276 if (stcb->asoc.total_flight_count > 0) \
277 stcb->asoc.total_flight_count--; \
278 } else { \
279 stcb->asoc.total_flight = 0; \
280 stcb->asoc.total_flight_count = 0; \
281 } \
282 } while (0)
283
284 #define sctp_total_flight_increase(stcb, tp1) do { \
285 (stcb)->asoc.total_flight_count++; \
286 (stcb)->asoc.total_flight += (tp1)->book_size; \
287 } while (0)
288
289 #endif
290
291
292 struct sctp_nets;
293 struct sctp_inpcb;
294 struct sctp_tcb;
295 struct sctphdr;
296
297
298 void sctp_close(struct socket *so);
299 int sctp_disconnect(struct socket *so);
300
301 void sctp_ctlinput __P((int, struct sockaddr *, void *));
302 int sctp_ctloutput __P((struct socket *, struct sockopt *));
303 void sctp_input __P((struct mbuf *, int));
304 void sctp_drain __P((void));
305 void sctp_init __P((void));
306
307
308 void sctp_pcbinfo_cleanup(void);
309
310 int sctp_shutdown __P((struct socket *));
311 void sctp_notify
312 __P((struct sctp_inpcb *, struct ip *ip, struct sctphdr *,
313 struct sockaddr *, struct sctp_tcb *,
314 struct sctp_nets *));
315
316 int sctp_bindx(struct socket *, int, struct sockaddr_storage *,
317 int, int, struct proc *);
318
319 /* can't use sctp_assoc_t here */
320 int sctp_peeloff(struct socket *, struct socket *, int, caddr_t, int *);
321
322 int sctp_ingetaddr(struct socket *,
323 struct sockaddr **
324 );
325
326 int sctp_peeraddr(struct socket *,
327 struct sockaddr **
328 );
329
330 int sctp_listen(struct socket *, int, struct thread *);
331
332 int sctp_accept(struct socket *, struct sockaddr **);
333
334 #endif /* _KERNEL */
335
336 #endif /* !_NETINET_SCTP_VAR_H_ */
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