2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
5 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
6 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
11 * a) Redistributions of source code must retain the above copyright notice,
12 * this list of conditions and the following disclaimer.
14 * b) Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the distribution.
18 * c) Neither the name of Cisco Systems, Inc. nor the names of its
19 * contributors may be used to endorse or promote products derived
20 * from this software without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
24 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
32 * THE POSSIBILITY OF SUCH DAMAGE.
35 #if defined(__FreeBSD__) && !defined(__Userspace__)
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD: head/sys/netinet/sctputil.h 363323 2020-07-19 12:34:19Z tuexen $");
40 #ifndef _NETINET_SCTP_UTIL_H_
41 #define _NETINET_SCTP_UTIL_H_
43 #if defined(_KERNEL) || defined(__Userspace__)
45 #define SCTP_READ_LOCK_HELD 1
46 #define SCTP_READ_LOCK_NOT_HELD 0
48 #ifdef SCTP_ASOCLOG_OF_TSNS
49 void sctp_print_out_track_log(struct sctp_tcb *stcb);
52 #ifdef SCTP_MBUF_LOGGING
53 struct mbuf *sctp_m_free(struct mbuf *m);
54 void sctp_m_freem(struct mbuf *m);
56 #define sctp_m_free m_free
57 #define sctp_m_freem m_freem
60 #if defined(SCTP_LOCAL_TRACE_BUF)
62 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);
65 #define sctp_get_associd(stcb) ((sctp_assoc_t)stcb->asoc.assoc_id)
72 sctp_map_assoc_state(int);
75 sctp_get_ifa_hash_val(struct sockaddr *addr);
78 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr, int hold_lock);
81 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock);
83 uint32_t sctp_select_initial_TSN(struct sctp_pcb *);
85 uint32_t sctp_select_a_tag(struct sctp_inpcb *, uint16_t lport, uint16_t rport, int);
87 int sctp_init_asoc(struct sctp_inpcb *, struct sctp_tcb *, uint32_t, uint32_t, uint16_t);
89 void sctp_fill_random_store(struct sctp_pcb *);
92 sctp_notify_stream_reset_add(struct sctp_tcb *stcb, uint16_t numberin,
93 uint16_t numberout, int flag);
95 sctp_notify_stream_reset_tsn(struct sctp_tcb *stcb, uint32_t sending_tsn, uint32_t recv_tsn, int flag);
98 * NOTE: sctp_timer_start() will increment the reference count of any relevant
99 * structure the timer is referencing, in order to prevent a race condition
100 * between the timer executing and the structure being freed.
102 * When the timer fires or sctp_timer_stop() is called, these references are
106 sctp_timer_start(int, struct sctp_inpcb *, struct sctp_tcb *,
110 sctp_timer_stop(int, struct sctp_inpcb *, struct sctp_tcb *,
111 struct sctp_nets *, uint32_t);
114 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id);
117 sctp_mtu_size_reset(struct sctp_inpcb *, struct sctp_association *, uint32_t);
120 sctp_wakeup_the_read_socket(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
122 #if !(defined(__APPLE__) && !defined(__Userspace__))
127 #if defined(__Userspace__)
128 void sctp_invoke_recv_callback(struct sctp_inpcb *,
130 struct sctp_queued_to_read *,
135 sctp_add_to_readq(struct sctp_inpcb *inp,
136 struct sctp_tcb *stcb,
137 struct sctp_queued_to_read *control,
143 void sctp_iterator_worker(void);
145 uint32_t sctp_get_prev_mtu(uint32_t);
146 uint32_t sctp_get_next_mtu(uint32_t);
149 sctp_timeout_handler(void *);
152 sctp_calculate_rto(struct sctp_tcb *, struct sctp_association *,
153 struct sctp_nets *, struct timeval *, int);
155 uint32_t sctp_calculate_len(struct mbuf *);
157 caddr_t sctp_m_getptr(struct mbuf *, int, int, uint8_t *);
159 struct sctp_paramhdr *
160 sctp_get_next_param(struct mbuf *, int,
161 struct sctp_paramhdr *, int);
164 sctp_add_pad_tombuf(struct mbuf *, int);
167 sctp_pad_lastmbuf(struct mbuf *, int, struct mbuf *);
169 void sctp_ulp_notify(uint32_t, struct sctp_tcb *, uint32_t, void *, int);
172 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp,
173 struct sctp_inpcb *new_inp,
174 struct sctp_tcb *stcb, int waitflags);
177 void sctp_stop_timers_for_shutdown(struct sctp_tcb *);
179 /* Stop all timers for association and remote addresses. */
180 void sctp_stop_association_timers(struct sctp_tcb *, bool);
182 void sctp_report_all_outbound(struct sctp_tcb *, uint16_t, int, int);
184 int sctp_expand_mapping_array(struct sctp_association *, uint32_t);
186 void sctp_abort_notification(struct sctp_tcb *, uint8_t, uint16_t,
187 struct sctp_abort_chunk *, int);
189 /* We abort responding to an IP packet for some reason */
191 sctp_abort_association(struct sctp_inpcb *, struct sctp_tcb *, struct mbuf *,
192 int, struct sockaddr *, struct sockaddr *,
193 struct sctphdr *, struct mbuf *,
194 #if defined(__FreeBSD__) && !defined(__Userspace__)
200 /* We choose to abort via user input */
202 sctp_abort_an_association(struct sctp_inpcb *, struct sctp_tcb *,
205 void sctp_handle_ootb(struct mbuf *, int, int,
206 struct sockaddr *, struct sockaddr *,
207 struct sctphdr *, struct sctp_inpcb *,
209 #if defined(__FreeBSD__) && !defined(__Userspace__)
210 uint8_t, uint32_t, uint16_t,
214 int sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr,
215 int totaddr, int *error);
218 sctp_connectx_helper_find(struct sctp_inpcb *, struct sockaddr *,
219 unsigned int, unsigned int *, unsigned int *, unsigned int);
221 int sctp_is_there_an_abort_here(struct mbuf *, int, uint32_t *);
223 uint32_t sctp_is_same_scope(struct sockaddr_in6 *, struct sockaddr_in6 *);
225 #if defined(SCTP_EMBEDDED_V6_SCOPE)
226 struct sockaddr_in6 *
227 sctp_recover_scope(struct sockaddr_in6 *, struct sockaddr_in6 *);
230 #define sctp_recover_scope_mac(addr, store) do { \
231 if ((addr->sin6_family == AF_INET6) && \
232 (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr))) { \
234 if (addr->sin6_scope_id == 0) { \
235 if (!sa6_recoverscope(store)) { \
239 in6_clearscope(&addr->sin6_addr); \
245 #define sctp_recover_scope_mac(addr, store) do { \
246 if ((addr->sin6_family == AF_INET6) && \
247 (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr))) { \
249 if (addr->sin6_scope_id == 0) { \
250 if (!in6_recoverscope(store, &store->sin6_addr, \
255 in6_clearscope(&addr->sin6_addr); \
264 int sctp_cmpaddr(struct sockaddr *, struct sockaddr *);
266 void sctp_print_address(struct sockaddr *);
269 sctp_release_pr_sctp_chunk(struct sctp_tcb *, struct sctp_tmit_chunk *,
272 struct mbuf *sctp_generate_cause(uint16_t, char *);
273 struct mbuf *sctp_generate_no_user_data_cause(uint32_t);
275 void sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp,
276 struct sockaddr *sa, uint32_t vrf_id, int *error,
278 void sctp_bindx_delete_address(struct sctp_inpcb *inp, struct sockaddr *sa,
279 uint32_t vrf_id, int *error);
281 int sctp_local_addr_count(struct sctp_tcb *stcb);
283 #ifdef SCTP_MBCNT_LOGGING
285 sctp_free_bufspace(struct sctp_tcb *, struct sctp_association *,
286 struct sctp_tmit_chunk *, int);
289 #define sctp_free_bufspace(stcb, asoc, tp1, chk_cnt) \
291 if (tp1->data != NULL) { \
292 atomic_subtract_int(&((asoc)->chunks_on_out_queue), chk_cnt); \
293 if ((asoc)->total_output_queue_size >= tp1->book_size) { \
294 atomic_subtract_int(&((asoc)->total_output_queue_size), tp1->book_size); \
296 (asoc)->total_output_queue_size = 0; \
298 if (stcb->sctp_socket && ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \
299 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \
300 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) { \
301 atomic_subtract_int(&((stcb)->sctp_socket->so_snd.sb_cc), tp1->book_size); \
303 stcb->sctp_socket->so_snd.sb_cc = 0; \
311 #define sctp_free_spbufspace(stcb, asoc, sp) \
313 if (sp->data != NULL) { \
314 if ((asoc)->total_output_queue_size >= sp->length) { \
315 atomic_subtract_int(&(asoc)->total_output_queue_size, sp->length); \
317 (asoc)->total_output_queue_size = 0; \
319 if (stcb->sctp_socket && ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \
320 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \
321 if (stcb->sctp_socket->so_snd.sb_cc >= sp->length) { \
322 atomic_subtract_int(&stcb->sctp_socket->so_snd.sb_cc,sp->length); \
324 stcb->sctp_socket->so_snd.sb_cc = 0; \
330 #define sctp_snd_sb_alloc(stcb, sz) \
332 atomic_add_int(&stcb->asoc.total_output_queue_size,sz); \
333 if ((stcb->sctp_socket != NULL) && \
334 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \
335 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \
336 atomic_add_int(&stcb->sctp_socket->so_snd.sb_cc,sz); \
340 /* functions to start/stop udp tunneling */
341 #if (defined(__APPLE__) || defined(__FreeBSD__)) && !defined(__Userspace__)
342 void sctp_over_udp_stop(void);
343 int sctp_over_udp_start(void);
345 #if defined(_WIN32) && !defined(__Userspace__)
346 void sctp_over_udp_restart(void);
350 sctp_soreceive(struct socket *so, struct sockaddr **psa,
353 struct mbuf **controlp,
357 sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d);
360 sctp_wakeup_log(struct sctp_tcb *stcb,
361 uint32_t wake_cnt, int from);
363 void sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t, uint16_t, uint16_t, int);
365 void sctp_log_nagle_event(struct sctp_tcb *stcb, int action);
368 #ifdef SCTP_MBUF_LOGGING
370 sctp_log_mb(struct mbuf *m, int from);
373 sctp_log_mbc(struct mbuf *m, int from);
377 sctp_sblog(struct sockbuf *sb,
378 struct sctp_tcb *stcb, int from, int incr);
381 sctp_log_strm_del(struct sctp_queued_to_read *control,
382 struct sctp_queued_to_read *poschk,
384 void sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *, int, uint8_t);
385 void rto_logging(struct sctp_nets *net, int from);
387 void sctp_log_closing(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int16_t loc);
389 void sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from);
390 void sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *, int, int, uint8_t);
391 void sctp_log_block(uint8_t, struct sctp_association *, ssize_t);
392 void sctp_log_rwnd(uint8_t, uint32_t, uint32_t, uint32_t);
393 void sctp_log_rwnd_set(uint8_t, uint32_t, uint32_t, uint32_t, uint32_t);
394 int sctp_fill_stat_log(void *, size_t *);
395 void sctp_log_fr(uint32_t, uint32_t, uint32_t, int);
396 void sctp_log_sack(uint32_t, uint32_t, uint32_t, uint16_t, uint16_t, int);
397 void sctp_log_map(uint32_t, uint32_t, uint32_t, int);
398 void sctp_print_mapping_array(struct sctp_association *asoc);
399 void sctp_clr_stat_log(void);
402 #ifdef SCTP_AUDITING_ENABLED
404 sctp_auditing(int, struct sctp_inpcb *, struct sctp_tcb *,
406 void sctp_audit_log(uint8_t, uint8_t);
409 uint32_t sctp_min_mtu(uint32_t, uint32_t, uint32_t);
410 #if defined(__FreeBSD__) && !defined(__Userspace__)
411 void sctp_hc_set_mtu(union sctp_sockstore *, uint16_t, uint32_t);
412 uint32_t sctp_hc_get_mtu(union sctp_sockstore *, uint16_t);
414 void sctp_set_state(struct sctp_tcb *, int);
415 void sctp_add_substate(struct sctp_tcb *, int);
416 uint32_t sctp_ticks_to_msecs(uint32_t);
417 uint32_t sctp_msecs_to_ticks(uint32_t);
418 uint32_t sctp_ticks_to_secs(uint32_t);
419 uint32_t sctp_secs_to_ticks(uint32_t);