2 * Copyright (c) 2001-2008, 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:
9 * a) Redistributions of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
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.
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.
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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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
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30 * THE POSSIBILITY OF SUCH DAMAGE.
33 /* $KAME: sctp_var.h,v 1.24 2005/03/06 16:04:19 itojun Exp $ */
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
38 #ifndef _NETINET_SCTP_VAR_H_
39 #define _NETINET_SCTP_VAR_H_
41 #include <netinet/sctp_uio.h>
43 #if defined(_KERNEL) || defined(__Userspace__)
45 extern struct pr_usrreqs sctp_usrreqs;
48 #define sctp_feature_on(inp, feature) (inp->sctp_features |= feature)
49 #define sctp_feature_off(inp, feature) (inp->sctp_features &= ~feature)
50 #define sctp_is_feature_on(inp, feature) ((inp->sctp_features & feature) == feature)
51 #define sctp_is_feature_off(inp, feature) ((inp->sctp_features & feature) == 0)
54 /* managing mobility_feature in inpcb (by micchie) */
55 #define sctp_mobility_feature_on(inp, feature) (inp->sctp_mobility_features |= feature)
56 #define sctp_mobility_feature_off(inp, feature) (inp->sctp_mobility_features &= ~feature)
57 #define sctp_is_mobility_feature_on(inp, feature) (inp->sctp_mobility_features & feature)
58 #define sctp_is_mobility_feature_off(inp, feature) ((inp->sctp_mobility_features & feature) == 0)
60 #define sctp_maxspace(sb) (max((sb)->sb_hiwat,SCTP_MINIMAL_RWND))
62 #define sctp_sbspace(asoc, sb) ((long) ((sctp_maxspace(sb) > (asoc)->sb_cc) ? (sctp_maxspace(sb) - (asoc)->sb_cc) : 0))
64 #define sctp_sbspace_failedmsgs(sb) ((long) ((sctp_maxspace(sb) > (sb)->sb_cc) ? (sctp_maxspace(sb) - (sb)->sb_cc) : 0))
66 #define sctp_sbspace_sub(a,b) ((a > b) ? (a - b) : 0)
69 * I tried to cache the readq entries at one point. But the reality
70 * is that it did not add any performance since this meant we had to
71 * lock the STCB on read. And at that point once you have to do an
72 * extra lock, it really does not matter if the lock is in the ZONE
73 * stuff or in our code. Note that this same problem would occur with
74 * an mbuf cache as well so it is not really worth doing, at least
78 #define sctp_free_a_readq(_stcb, _readq) { \
79 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), (_readq)); \
80 SCTP_DECR_READQ_COUNT(); \
83 #define sctp_alloc_a_readq(_stcb, _readq) { \
84 (_readq) = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_readq), struct sctp_queued_to_read); \
86 SCTP_INCR_READQ_COUNT(); \
90 #define sctp_free_a_strmoq(_stcb, _strmoq, _so_locked) { \
91 if ((_strmoq)->holds_key_ref) { \
92 sctp_auth_key_release(stcb, sp->auth_keyid, _so_locked); \
93 (_strmoq)->holds_key_ref = 0; \
95 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_strmoq), (_strmoq)); \
96 SCTP_DECR_STRMOQ_COUNT(); \
99 #define sctp_alloc_a_strmoq(_stcb, _strmoq) { \
100 (_strmoq) = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_strmoq), struct sctp_stream_queue_pending); \
102 memset(_strmoq, 0, sizeof(struct sctp_stream_queue_pending)); \
103 SCTP_INCR_STRMOQ_COUNT(); \
104 (_strmoq)->holds_key_ref = 0; \
108 #define sctp_free_a_chunk(_stcb, _chk, _so_locked) { \
109 if ((_chk)->holds_key_ref) {\
110 sctp_auth_key_release((_stcb), (_chk)->auth_keyid, _so_locked); \
111 (_chk)->holds_key_ref = 0; \
114 SCTP_TCB_LOCK_ASSERT((_stcb)); \
115 if ((_chk)->whoTo) { \
116 sctp_free_remote_addr((_chk)->whoTo); \
117 (_chk)->whoTo = NULL; \
119 if (((_stcb)->asoc.free_chunk_cnt > SCTP_BASE_SYSCTL(sctp_asoc_free_resc_limit)) || \
120 (SCTP_BASE_INFO(ipi_free_chunks) > SCTP_BASE_SYSCTL(sctp_system_free_resc_limit))) { \
121 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), (_chk)); \
122 SCTP_DECR_CHK_COUNT(); \
124 TAILQ_INSERT_TAIL(&(_stcb)->asoc.free_chunks, (_chk), sctp_next); \
125 (_stcb)->asoc.free_chunk_cnt++; \
126 atomic_add_int(&SCTP_BASE_INFO(ipi_free_chunks), 1); \
129 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), (_chk)); \
130 SCTP_DECR_CHK_COUNT(); \
134 #define sctp_alloc_a_chunk(_stcb, _chk) { \
135 if (TAILQ_EMPTY(&(_stcb)->asoc.free_chunks)) { \
136 (_chk) = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_chunk), struct sctp_tmit_chunk); \
138 SCTP_INCR_CHK_COUNT(); \
139 (_chk)->whoTo = NULL; \
140 (_chk)->holds_key_ref = 0; \
143 (_chk) = TAILQ_FIRST(&(_stcb)->asoc.free_chunks); \
144 TAILQ_REMOVE(&(_stcb)->asoc.free_chunks, (_chk), sctp_next); \
145 atomic_subtract_int(&SCTP_BASE_INFO(ipi_free_chunks), 1); \
146 (_chk)->holds_key_ref = 0; \
147 SCTP_STAT_INCR(sctps_cached_chk); \
148 (_stcb)->asoc.free_chunk_cnt--; \
153 #define sctp_free_remote_addr(__net) { \
155 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&(__net)->ref_count)) { \
156 (void)SCTP_OS_TIMER_STOP(&(__net)->rxt_timer.timer); \
157 (void)SCTP_OS_TIMER_STOP(&(__net)->pmtu_timer.timer); \
158 (void)SCTP_OS_TIMER_STOP(&(__net)->fr_timer.timer); \
159 if ((__net)->ro.ro_rt) { \
160 RTFREE((__net)->ro.ro_rt); \
161 (__net)->ro.ro_rt = NULL; \
163 if ((__net)->src_addr_selected) { \
164 sctp_free_ifa((__net)->ro._s_addr); \
165 (__net)->ro._s_addr = NULL; \
167 (__net)->src_addr_selected = 0; \
168 (__net)->dest_state = SCTP_ADDR_NOT_REACHABLE; \
169 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_net), (__net)); \
170 SCTP_DECR_RADDR_COUNT(); \
175 #define sctp_sbfree(ctl, stcb, sb, m) { \
176 SCTP_SAVE_ATOMIC_DECREMENT(&(sb)->sb_cc, SCTP_BUF_LEN((m))); \
177 SCTP_SAVE_ATOMIC_DECREMENT(&(sb)->sb_mbcnt, MSIZE); \
178 if (((ctl)->do_not_ref_stcb == 0) && stcb) {\
179 SCTP_SAVE_ATOMIC_DECREMENT(&(stcb)->asoc.sb_cc, SCTP_BUF_LEN((m))); \
180 SCTP_SAVE_ATOMIC_DECREMENT(&(stcb)->asoc.my_rwnd_control_len, MSIZE); \
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))); \
187 #define sctp_sballoc(stcb, sb, m) { \
188 atomic_add_int(&(sb)->sb_cc,SCTP_BUF_LEN((m))); \
189 atomic_add_int(&(sb)->sb_mbcnt, MSIZE); \
191 atomic_add_int(&(stcb)->asoc.sb_cc,SCTP_BUF_LEN((m))); \
192 atomic_add_int(&(stcb)->asoc.my_rwnd_control_len, MSIZE); \
194 if (SCTP_BUF_TYPE(m) != MT_DATA && SCTP_BUF_TYPE(m) != MT_HEADER && \
195 SCTP_BUF_TYPE(m) != MT_OOBDATA) \
196 atomic_add_int(&(sb)->sb_ctl,SCTP_BUF_LEN((m))); \
200 #define sctp_ucount_incr(val) { \
204 #define sctp_ucount_decr(val) { \
212 #define sctp_mbuf_crush(data) do { \
215 while(_m && (SCTP_BUF_LEN(_m) == 0)) { \
216 (data) = SCTP_BUF_NEXT(_m); \
217 SCTP_BUF_NEXT(_m) = NULL; \
223 #define sctp_flight_size_decrease(tp1) do { \
224 if (tp1->whoTo->flight_size >= tp1->book_size) \
225 tp1->whoTo->flight_size -= tp1->book_size; \
227 tp1->whoTo->flight_size = 0; \
230 #define sctp_flight_size_increase(tp1) do { \
231 (tp1)->whoTo->flight_size += (tp1)->book_size; \
234 #ifdef SCTP_FS_SPEC_LOG
235 #define sctp_total_flight_decrease(stcb, tp1) do { \
236 if (stcb->asoc.fs_index > SCTP_FS_SPEC_LOG_SIZE) \
237 stcb->asoc.fs_index = 0;\
238 stcb->asoc.fslog[stcb->asoc.fs_index].total_flight = stcb->asoc.total_flight; \
239 stcb->asoc.fslog[stcb->asoc.fs_index].tsn = tp1->rec.data.TSN_seq; \
240 stcb->asoc.fslog[stcb->asoc.fs_index].book = tp1->book_size; \
241 stcb->asoc.fslog[stcb->asoc.fs_index].sent = tp1->sent; \
242 stcb->asoc.fslog[stcb->asoc.fs_index].incr = 0; \
243 stcb->asoc.fslog[stcb->asoc.fs_index].decr = 1; \
244 stcb->asoc.fs_index++; \
245 tp1->window_probe = 0; \
246 if (stcb->asoc.total_flight >= tp1->book_size) { \
247 stcb->asoc.total_flight -= tp1->book_size; \
248 if (stcb->asoc.total_flight_count > 0) \
249 stcb->asoc.total_flight_count--; \
251 stcb->asoc.total_flight = 0; \
252 stcb->asoc.total_flight_count = 0; \
256 #define sctp_total_flight_increase(stcb, tp1) do { \
257 if (stcb->asoc.fs_index > SCTP_FS_SPEC_LOG_SIZE) \
258 stcb->asoc.fs_index = 0;\
259 stcb->asoc.fslog[stcb->asoc.fs_index].total_flight = stcb->asoc.total_flight; \
260 stcb->asoc.fslog[stcb->asoc.fs_index].tsn = tp1->rec.data.TSN_seq; \
261 stcb->asoc.fslog[stcb->asoc.fs_index].book = tp1->book_size; \
262 stcb->asoc.fslog[stcb->asoc.fs_index].sent = tp1->sent; \
263 stcb->asoc.fslog[stcb->asoc.fs_index].incr = 1; \
264 stcb->asoc.fslog[stcb->asoc.fs_index].decr = 0; \
265 stcb->asoc.fs_index++; \
266 (stcb)->asoc.total_flight_count++; \
267 (stcb)->asoc.total_flight += (tp1)->book_size; \
272 #define sctp_total_flight_decrease(stcb, tp1) do { \
273 tp1->window_probe = 0; \
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--; \
279 stcb->asoc.total_flight = 0; \
280 stcb->asoc.total_flight_count = 0; \
284 #define sctp_total_flight_increase(stcb, tp1) do { \
285 (stcb)->asoc.total_flight_count++; \
286 (stcb)->asoc.total_flight += (tp1)->book_size; \
298 void sctp_close(struct socket *so);
299 int sctp_disconnect(struct socket *so);
301 void sctp_ctlinput __P((int, struct sockaddr *, void *));
302 int sctp_ctloutput __P((struct socket *, struct sockopt *));
305 void sctp_input_with_port __P((struct mbuf *, int, uint16_t));
309 void sctp_input __P((struct mbuf *, int));
312 void sctp_pathmtu_adjustment __P((struct sctp_inpcb *, struct sctp_tcb *, struct sctp_nets *, uint16_t));
313 void sctp_drain __P((void));
314 void sctp_init __P((void));
316 void sctp_finish(void);
318 int sctp_flush(struct socket *, int);
319 int sctp_shutdown __P((struct socket *));
321 __P((struct sctp_inpcb *, struct ip *ip, struct sctphdr *,
322 struct sockaddr *, struct sctp_tcb *,
323 struct sctp_nets *));
325 int sctp_bindx(struct socket *, int, struct sockaddr_storage *,
326 int, int, struct proc *);
328 /* can't use sctp_assoc_t here */
329 int sctp_peeloff(struct socket *, struct socket *, int, caddr_t, int *);
331 int sctp_ingetaddr(struct socket *,
335 int sctp_peeraddr(struct socket *,
339 int sctp_listen(struct socket *, int, struct thread *);
341 int sctp_accept(struct socket *, struct sockaddr **);
345 #endif /* !_NETINET_SCTP_VAR_H_ */