1 /*-
2 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
3 * Copyright (c) 2008-2011, by Randall Stewart. All rights reserved.
4 * Copyright (c) 2008-2011, by Michael Tuexen. 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 /* $KAME: sctputil.h,v 1.15 2005/03/06 16:04:19 itojun Exp $ */
35
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD: releng/8.3/sys/netinet/sctputil.h 231490 2012-02-11 00:54:24Z tuexen $");
38 #ifndef __sctputil_h__
39 #define __sctputil_h__
40
41
42 #if defined(_KERNEL) || defined(__Userspace__)
43
44 #define SCTP_READ_LOCK_HELD 1
45 #define SCTP_READ_LOCK_NOT_HELD 0
46
47 #ifdef SCTP_ASOCLOG_OF_TSNS
48 void sctp_print_out_track_log(struct sctp_tcb *stcb);
49
50 #endif
51
52 #ifdef SCTP_MBUF_LOGGING
53 struct mbuf *sctp_m_free(struct mbuf *m);
54 void sctp_m_freem(struct mbuf *m);
55
56 #else
57 #define sctp_m_free m_free
58 #define sctp_m_freem m_freem
59 #endif
60
61 #if defined(SCTP_LOCAL_TRACE_BUF) || defined(__APPLE__)
62 void
63 sctp_log_trace(uint32_t fr, const char *str SCTP_UNUSED, uint32_t a, uint32_t b, uint32_t c, uint32_t d, uint32_t e, uint32_t f);
64
65 #endif
66
67 #define sctp_get_associd(stcb) ((sctp_assoc_t)stcb->asoc.assoc_id)
68
69
70 /*
71 * Function prototypes
72 */
73 uint32_t
74 sctp_get_ifa_hash_val(struct sockaddr *addr);
75
76 struct sctp_ifa *
77 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr, int hold_lock);
78
79 struct sctp_ifa *
80 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock);
81
82 uint32_t sctp_select_initial_TSN(struct sctp_pcb *);
83
84 uint32_t sctp_select_a_tag(struct sctp_inpcb *, uint16_t lport, uint16_t rport, int);
85
86 int sctp_init_asoc(struct sctp_inpcb *, struct sctp_tcb *, uint32_t, uint32_t);
87
88 void sctp_fill_random_store(struct sctp_pcb *);
89
90 void
91 sctp_timer_start(int, struct sctp_inpcb *, struct sctp_tcb *,
92 struct sctp_nets *);
93
94 void
95 sctp_timer_stop(int, struct sctp_inpcb *, struct sctp_tcb *,
96 struct sctp_nets *, uint32_t);
97
98 int
99 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id);
100
101 void
102 sctp_mtu_size_reset(struct sctp_inpcb *, struct sctp_association *, uint32_t);
103
104 void
105 sctp_add_to_readq(struct sctp_inpcb *inp,
106 struct sctp_tcb *stcb,
107 struct sctp_queued_to_read *control,
108 struct sockbuf *sb,
109 int end,
110 int inpread_locked,
111 int so_locked
112 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
113 SCTP_UNUSED
114 #endif
115 );
116
117 int
118 sctp_append_to_readq(struct sctp_inpcb *inp,
119 struct sctp_tcb *stcb,
120 struct sctp_queued_to_read *control,
121 struct mbuf *m,
122 int end,
123 int new_cumack,
124 struct sockbuf *sb);
125
126
127 void sctp_iterator_worker(void);
128
129 uint32_t sctp_get_prev_mtu(uint32_t);
130 uint32_t sctp_get_next_mtu(uint32_t);
131
132 void
133 sctp_timeout_handler(void *);
134
135 uint32_t
136 sctp_calculate_rto(struct sctp_tcb *, struct sctp_association *,
137 struct sctp_nets *, struct timeval *, int, int);
138
139 uint32_t sctp_calculate_len(struct mbuf *);
140
141 caddr_t sctp_m_getptr(struct mbuf *, int, int, uint8_t *);
142
143 struct sctp_paramhdr *
144 sctp_get_next_param(struct mbuf *, int,
145 struct sctp_paramhdr *, int);
146
147 int sctp_add_pad_tombuf(struct mbuf *, int);
148
149 int sctp_pad_lastmbuf(struct mbuf *, int, struct mbuf *);
150
151 void
152 sctp_ulp_notify(uint32_t, struct sctp_tcb *, uint32_t, void *, int
153 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
154 SCTP_UNUSED
155 #endif
156 );
157
158 void
159 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp,
160 struct sctp_inpcb *new_inp,
161 struct sctp_tcb *stcb, int waitflags);
162
163
164 void sctp_stop_timers_for_shutdown(struct sctp_tcb *);
165
166 void
167 sctp_report_all_outbound(struct sctp_tcb *, int, int
168 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
169 SCTP_UNUSED
170 #endif
171 );
172
173 int sctp_expand_mapping_array(struct sctp_association *, uint32_t);
174
175 void
176 sctp_abort_notification(struct sctp_tcb *, int, int
177 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
178 SCTP_UNUSED
179 #endif
180 );
181
182 /* We abort responding to an IP packet for some reason */
183 void
184 sctp_abort_association(struct sctp_inpcb *, struct sctp_tcb *,
185 struct mbuf *, int, struct sctphdr *, struct mbuf *, uint32_t, uint16_t);
186
187
188 /* We choose to abort via user input */
189 void
190 sctp_abort_an_association(struct sctp_inpcb *, struct sctp_tcb *, int,
191 struct mbuf *, int
192 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
193 SCTP_UNUSED
194 #endif
195 );
196
197 void
198 sctp_handle_ootb(struct mbuf *, int, int, struct sctphdr *,
199 struct sctp_inpcb *, struct mbuf *, uint32_t, uint16_t);
200
201 int
202 sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr,
203 int totaddr, int *error);
204
205 struct sctp_tcb *
206 sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr,
207 int *totaddr, int *num_v4, int *num_v6, int *error, int limit, int *bad_addr);
208
209 int sctp_is_there_an_abort_here(struct mbuf *, int, uint32_t *);
210
211 #ifdef INET6
212 uint32_t sctp_is_same_scope(struct sockaddr_in6 *, struct sockaddr_in6 *);
213
214 struct sockaddr_in6 *
215 sctp_recover_scope(struct sockaddr_in6 *, struct sockaddr_in6 *);
216
217 #define sctp_recover_scope_mac(addr, store) do { \
218 if ((addr->sin6_family == AF_INET6) && \
219 (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr))) { \
220 *store = *addr; \
221 if (addr->sin6_scope_id == 0) { \
222 if (!sa6_recoverscope(store)) { \
223 addr = store; \
224 } \
225 } else { \
226 in6_clearscope(&addr->sin6_addr); \
227 addr = store; \
228 } \
229 } \
230 } while (0)
231 #endif
232
233 int sctp_cmpaddr(struct sockaddr *, struct sockaddr *);
234
235 void sctp_print_address(struct sockaddr *);
236 void sctp_print_address_pkt(struct ip *, struct sctphdr *);
237
238 int
239 sctp_release_pr_sctp_chunk(struct sctp_tcb *, struct sctp_tmit_chunk *,
240 int, int
241 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
242 SCTP_UNUSED
243 #endif
244 );
245
246 struct mbuf *sctp_generate_invmanparam(int);
247
248 void
249 sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp,
250 struct sockaddr *sa, sctp_assoc_t assoc_id,
251 uint32_t vrf_id, int *error, void *p);
252 void
253 sctp_bindx_delete_address(struct sctp_inpcb *inp,
254 struct sockaddr *sa, sctp_assoc_t assoc_id,
255 uint32_t vrf_id, int *error);
256
257 int sctp_local_addr_count(struct sctp_tcb *stcb);
258
259 #ifdef SCTP_MBCNT_LOGGING
260 void
261 sctp_free_bufspace(struct sctp_tcb *, struct sctp_association *,
262 struct sctp_tmit_chunk *, int);
263
264 #else
265 #define sctp_free_bufspace(stcb, asoc, tp1, chk_cnt) \
266 do { \
267 if (tp1->data != NULL) { \
268 atomic_subtract_int(&((asoc)->chunks_on_out_queue), chk_cnt); \
269 if ((asoc)->total_output_queue_size >= tp1->book_size) { \
270 atomic_subtract_int(&((asoc)->total_output_queue_size), tp1->book_size); \
271 } else { \
272 (asoc)->total_output_queue_size = 0; \
273 } \
274 if (stcb->sctp_socket && ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \
275 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \
276 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) { \
277 atomic_subtract_int(&((stcb)->sctp_socket->so_snd.sb_cc), tp1->book_size); \
278 } else { \
279 stcb->sctp_socket->so_snd.sb_cc = 0; \
280 } \
281 } \
282 } \
283 } while (0)
284
285 #endif
286
287 #define sctp_free_spbufspace(stcb, asoc, sp) \
288 do { \
289 if (sp->data != NULL) { \
290 if ((asoc)->total_output_queue_size >= sp->length) { \
291 atomic_subtract_int(&(asoc)->total_output_queue_size, sp->length); \
292 } else { \
293 (asoc)->total_output_queue_size = 0; \
294 } \
295 if (stcb->sctp_socket && ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \
296 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \
297 if (stcb->sctp_socket->so_snd.sb_cc >= sp->length) { \
298 atomic_subtract_int(&stcb->sctp_socket->so_snd.sb_cc,sp->length); \
299 } else { \
300 stcb->sctp_socket->so_snd.sb_cc = 0; \
301 } \
302 } \
303 } \
304 } while (0)
305
306 #define sctp_snd_sb_alloc(stcb, sz) \
307 do { \
308 atomic_add_int(&stcb->asoc.total_output_queue_size,sz); \
309 if ((stcb->sctp_socket != NULL) && \
310 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \
311 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \
312 atomic_add_int(&stcb->sctp_socket->so_snd.sb_cc,sz); \
313 } \
314 } while (0)
315
316 /* functions to start/stop udp tunneling */
317 /* XXX: Remove the #ifdef after tunneling over IPv6 works also on FreeBSD. */
318 #ifdef INET
319 void sctp_over_udp_stop(void);
320 int sctp_over_udp_start(void);
321
322 #endif
323
324 int
325 sctp_soreceive(struct socket *so, struct sockaddr **psa,
326 struct uio *uio,
327 struct mbuf **mp0,
328 struct mbuf **controlp,
329 int *flagsp);
330
331 void
332 sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d);
333
334 void
335 sctp_wakeup_log(struct sctp_tcb *stcb,
336 uint32_t wake_cnt, int from);
337
338 void sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t, uint16_t, uint16_t, int);
339
340 void sctp_log_nagle_event(struct sctp_tcb *stcb, int action);
341
342
343 void
344 sctp_log_mb(struct mbuf *m, int from);
345
346 void
347 sctp_sblog(struct sockbuf *sb,
348 struct sctp_tcb *stcb, int from, int incr);
349
350 void
351 sctp_log_strm_del(struct sctp_queued_to_read *control,
352 struct sctp_queued_to_read *poschk,
353 int from);
354 void sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *, int, uint8_t);
355 void rto_logging(struct sctp_nets *net, int from);
356
357 void sctp_log_closing(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int16_t loc);
358
359 void sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from);
360 void sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *, int, int, uint8_t);
361 void sctp_log_block(uint8_t, struct sctp_association *, int);
362 void sctp_log_rwnd(uint8_t, uint32_t, uint32_t, uint32_t);
363 void sctp_log_mbcnt(uint8_t, uint32_t, uint32_t, uint32_t, uint32_t);
364 void sctp_log_rwnd_set(uint8_t, uint32_t, uint32_t, uint32_t, uint32_t);
365 int sctp_fill_stat_log(void *, size_t *);
366 void sctp_log_fr(uint32_t, uint32_t, uint32_t, int);
367 void sctp_log_sack(uint32_t, uint32_t, uint32_t, uint16_t, uint16_t, int);
368 void sctp_log_map(uint32_t, uint32_t, uint32_t, int);
369 void sctp_print_mapping_array(struct sctp_association *asoc);
370 void sctp_clr_stat_log(void);
371
372
373 #ifdef SCTP_AUDITING_ENABLED
374 void
375 sctp_auditing(int, struct sctp_inpcb *, struct sctp_tcb *,
376 struct sctp_nets *);
377 void sctp_audit_log(uint8_t, uint8_t);
378
379 #endif
380
381
382 #endif /* _KERNEL */
383 #endif
Cache object: fd3f8826d8092acf1ed15791a915ed34
|