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.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
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10 * this list of conditions and the following disclaimer.
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34 /* $KAME: sctputil.h,v 1.15 2005/03/06 16:04:19 itojun Exp $ */
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD$");
38 #ifndef __sctputil_h__
39 #define __sctputil_h__
42 #if defined(_KERNEL) || defined(__Userspace__)
44 #define SCTP_READ_LOCK_HELD 1
45 #define SCTP_READ_LOCK_NOT_HELD 0
47 #ifdef SCTP_ASOCLOG_OF_TSNS
48 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);
57 #define sctp_m_free m_free
58 #define sctp_m_freem m_freem
61 #if defined(SCTP_LOCAL_TRACE_BUF) || defined(__APPLE__)
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);
67 #define sctp_get_associd(stcb) ((sctp_assoc_t)stcb->asoc.assoc_id)
74 sctp_get_ifa_hash_val(struct sockaddr *addr);
77 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr, int hold_lock);
80 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock);
82 uint32_t sctp_select_initial_TSN(struct sctp_pcb *);
84 uint32_t sctp_select_a_tag(struct sctp_inpcb *, uint16_t lport, uint16_t rport, int);
86 int sctp_init_asoc(struct sctp_inpcb *, struct sctp_tcb *, uint32_t, uint32_t);
88 void sctp_fill_random_store(struct sctp_pcb *);
91 sctp_notify_stream_reset_add(struct sctp_tcb *stcb, uint16_t numberin,
92 uint16_t numberout, int flag);
94 sctp_notify_stream_reset_tsn(struct sctp_tcb *stcb, uint32_t sending_tsn, uint32_t recv_tsn, int flag);
97 sctp_timer_start(int, struct sctp_inpcb *, struct sctp_tcb *,
101 sctp_timer_stop(int, struct sctp_inpcb *, struct sctp_tcb *,
102 struct sctp_nets *, uint32_t);
105 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id);
108 sctp_mtu_size_reset(struct sctp_inpcb *, struct sctp_association *, uint32_t);
111 sctp_add_to_readq(struct sctp_inpcb *inp,
112 struct sctp_tcb *stcb,
113 struct sctp_queued_to_read *control,
118 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
124 sctp_append_to_readq(struct sctp_inpcb *inp,
125 struct sctp_tcb *stcb,
126 struct sctp_queued_to_read *control,
133 void sctp_iterator_worker(void);
135 uint32_t sctp_get_prev_mtu(uint32_t);
136 uint32_t sctp_get_next_mtu(uint32_t);
139 sctp_timeout_handler(void *);
142 sctp_calculate_rto(struct sctp_tcb *, struct sctp_association *,
143 struct sctp_nets *, struct timeval *, int, int);
145 uint32_t sctp_calculate_len(struct mbuf *);
147 caddr_t sctp_m_getptr(struct mbuf *, int, int, uint8_t *);
149 struct sctp_paramhdr *
150 sctp_get_next_param(struct mbuf *, int,
151 struct sctp_paramhdr *, int);
153 int sctp_add_pad_tombuf(struct mbuf *, int);
155 int sctp_pad_lastmbuf(struct mbuf *, int, struct mbuf *);
158 sctp_ulp_notify(uint32_t, struct sctp_tcb *, uint32_t, void *, int
159 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
165 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp,
166 struct sctp_inpcb *new_inp,
167 struct sctp_tcb *stcb, int waitflags);
170 void sctp_stop_timers_for_shutdown(struct sctp_tcb *);
173 sctp_report_all_outbound(struct sctp_tcb *, uint16_t, int, int
174 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
179 int sctp_expand_mapping_array(struct sctp_association *, uint32_t);
182 sctp_abort_notification(struct sctp_tcb *, uint8_t, uint16_t,
183 struct sctp_abort_chunk *, int
184 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
189 /* We abort responding to an IP packet for some reason */
191 sctp_abort_association(struct sctp_inpcb *, struct sctp_tcb *,
192 struct mbuf *, int, struct sctphdr *, struct mbuf *, uint32_t, uint16_t);
195 /* We choose to abort via user input */
197 sctp_abort_an_association(struct sctp_inpcb *, struct sctp_tcb *,
199 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
205 sctp_handle_ootb(struct mbuf *, int, int, struct sctphdr *,
206 struct sctp_inpcb *, struct mbuf *, uint32_t, uint16_t);
209 sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr,
210 int totaddr, int *error);
213 sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr,
214 int *totaddr, int *num_v4, int *num_v6, int *error, int limit, int *bad_addr);
216 int sctp_is_there_an_abort_here(struct mbuf *, int, uint32_t *);
219 uint32_t sctp_is_same_scope(struct sockaddr_in6 *, struct sockaddr_in6 *);
221 struct sockaddr_in6 *
222 sctp_recover_scope(struct sockaddr_in6 *, struct sockaddr_in6 *);
224 #define sctp_recover_scope_mac(addr, store) do { \
225 if ((addr->sin6_family == AF_INET6) && \
226 (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr))) { \
228 if (addr->sin6_scope_id == 0) { \
229 if (!sa6_recoverscope(store)) { \
233 in6_clearscope(&addr->sin6_addr); \
240 int sctp_cmpaddr(struct sockaddr *, struct sockaddr *);
242 void sctp_print_address(struct sockaddr *);
243 void sctp_print_address_pkt(struct ip *, struct sctphdr *);
246 sctp_release_pr_sctp_chunk(struct sctp_tcb *, struct sctp_tmit_chunk *,
248 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
253 struct mbuf *sctp_generate_invmanparam(int);
256 sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp,
257 struct sockaddr *sa, sctp_assoc_t assoc_id,
258 uint32_t vrf_id, int *error, void *p);
260 sctp_bindx_delete_address(struct sctp_inpcb *inp,
261 struct sockaddr *sa, sctp_assoc_t assoc_id,
262 uint32_t vrf_id, int *error);
264 int sctp_local_addr_count(struct sctp_tcb *stcb);
266 #ifdef SCTP_MBCNT_LOGGING
268 sctp_free_bufspace(struct sctp_tcb *, struct sctp_association *,
269 struct sctp_tmit_chunk *, int);
272 #define sctp_free_bufspace(stcb, asoc, tp1, chk_cnt) \
274 if (tp1->data != NULL) { \
275 atomic_subtract_int(&((asoc)->chunks_on_out_queue), chk_cnt); \
276 if ((asoc)->total_output_queue_size >= tp1->book_size) { \
277 atomic_subtract_int(&((asoc)->total_output_queue_size), tp1->book_size); \
279 (asoc)->total_output_queue_size = 0; \
281 if (stcb->sctp_socket && ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \
282 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \
283 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) { \
284 atomic_subtract_int(&((stcb)->sctp_socket->so_snd.sb_cc), tp1->book_size); \
286 stcb->sctp_socket->so_snd.sb_cc = 0; \
294 #define sctp_free_spbufspace(stcb, asoc, sp) \
296 if (sp->data != NULL) { \
297 if ((asoc)->total_output_queue_size >= sp->length) { \
298 atomic_subtract_int(&(asoc)->total_output_queue_size, sp->length); \
300 (asoc)->total_output_queue_size = 0; \
302 if (stcb->sctp_socket && ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \
303 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \
304 if (stcb->sctp_socket->so_snd.sb_cc >= sp->length) { \
305 atomic_subtract_int(&stcb->sctp_socket->so_snd.sb_cc,sp->length); \
307 stcb->sctp_socket->so_snd.sb_cc = 0; \
313 #define sctp_snd_sb_alloc(stcb, sz) \
315 atomic_add_int(&stcb->asoc.total_output_queue_size,sz); \
316 if ((stcb->sctp_socket != NULL) && \
317 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \
318 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \
319 atomic_add_int(&stcb->sctp_socket->so_snd.sb_cc,sz); \
323 /* functions to start/stop udp tunneling */
324 /* XXX: Remove the #ifdef after tunneling over IPv6 works also on FreeBSD. */
326 void sctp_over_udp_stop(void);
327 int sctp_over_udp_start(void);
332 sctp_soreceive(struct socket *so, struct sockaddr **psa,
335 struct mbuf **controlp,
339 sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d);
342 sctp_wakeup_log(struct sctp_tcb *stcb,
343 uint32_t wake_cnt, int from);
345 void sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t, uint16_t, uint16_t, int);
347 void sctp_log_nagle_event(struct sctp_tcb *stcb, int action);
351 sctp_log_mb(struct mbuf *m, int from);
354 sctp_sblog(struct sockbuf *sb,
355 struct sctp_tcb *stcb, int from, int incr);
358 sctp_log_strm_del(struct sctp_queued_to_read *control,
359 struct sctp_queued_to_read *poschk,
361 void sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *, int, uint8_t);
362 void rto_logging(struct sctp_nets *net, int from);
364 void sctp_log_closing(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int16_t loc);
366 void sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from);
367 void sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *, int, int, uint8_t);
368 void sctp_log_block(uint8_t, struct sctp_association *, int);
369 void sctp_log_rwnd(uint8_t, uint32_t, uint32_t, uint32_t);
370 void sctp_log_mbcnt(uint8_t, uint32_t, uint32_t, uint32_t, uint32_t);
371 void sctp_log_rwnd_set(uint8_t, uint32_t, uint32_t, uint32_t, uint32_t);
372 int sctp_fill_stat_log(void *, size_t *);
373 void sctp_log_fr(uint32_t, uint32_t, uint32_t, int);
374 void sctp_log_sack(uint32_t, uint32_t, uint32_t, uint16_t, uint16_t, int);
375 void sctp_log_map(uint32_t, uint32_t, uint32_t, int);
376 void sctp_print_mapping_array(struct sctp_association *asoc);
377 void sctp_clr_stat_log(void);
380 #ifdef SCTP_AUDITING_ENABLED
382 sctp_auditing(int, struct sctp_inpcb *, struct sctp_tcb *,
384 void sctp_audit_log(uint8_t, uint8_t);