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31 /* $KAME: sctp_var.h,v 1.24 2005/03/06 16:04:19 itojun Exp $ */
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
36 #ifndef _NETINET_SCTP_VAR_H_
37 #define _NETINET_SCTP_VAR_H_
39 #include <netinet/sctp_uio.h>
41 #if defined(_KERNEL) || defined(__Userspace__)
43 extern struct pr_usrreqs sctp_usrreqs;
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)
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)
57 #define sctp_maxspace(sb) (max((sb)->sb_hiwat,SCTP_MINIMAL_RWND))
59 #define sctp_sbspace(asoc, sb) ((long) ((sctp_maxspace(sb) > (asoc)->sb_cc) ? (sctp_maxspace(sb) - (asoc)->sb_cc) : 0))
61 #define sctp_sbspace_failedmsgs(sb) ((long) ((sctp_maxspace(sb) > (sb)->sb_cc) ? (sctp_maxspace(sb) - (sb)->sb_cc) : 0))
63 #define sctp_sbspace_sub(a,b) ((a > b) ? (a - b) : 0)
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
75 #define sctp_free_a_readq(_stcb, _readq) { \
76 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), (_readq)); \
77 SCTP_DECR_READQ_COUNT(); \
80 #define sctp_alloc_a_readq(_stcb, _readq) { \
81 (_readq) = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_readq), struct sctp_queued_to_read); \
83 SCTP_INCR_READQ_COUNT(); \
87 #define sctp_free_a_strmoq(_stcb, _strmoq) { \
88 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_strmoq), (_strmoq)); \
89 SCTP_DECR_STRMOQ_COUNT(); \
92 #define sctp_alloc_a_strmoq(_stcb, _strmoq) { \
93 (_strmoq) = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_strmoq), struct sctp_stream_queue_pending); \
95 SCTP_INCR_STRMOQ_COUNT(); \
100 #define sctp_free_a_chunk(_stcb, _chk) { \
102 SCTP_TCB_LOCK_ASSERT((_stcb)); \
103 if ((_chk)->whoTo) { \
104 sctp_free_remote_addr((_chk)->whoTo); \
105 (_chk)->whoTo = NULL; \
107 if (((_stcb)->asoc.free_chunk_cnt > SCTP_BASE_SYSCTL(sctp_asoc_free_resc_limit)) || \
108 (SCTP_BASE_INFO(ipi_free_chunks) > SCTP_BASE_SYSCTL(sctp_system_free_resc_limit))) { \
109 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), (_chk)); \
110 SCTP_DECR_CHK_COUNT(); \
112 TAILQ_INSERT_TAIL(&(_stcb)->asoc.free_chunks, (_chk), sctp_next); \
113 (_stcb)->asoc.free_chunk_cnt++; \
114 atomic_add_int(&SCTP_BASE_INFO(ipi_free_chunks), 1); \
117 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), (_chk)); \
118 SCTP_DECR_CHK_COUNT(); \
122 #define sctp_alloc_a_chunk(_stcb, _chk) { \
123 if (TAILQ_EMPTY(&(_stcb)->asoc.free_chunks)) { \
124 (_chk) = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_chunk), struct sctp_tmit_chunk); \
126 SCTP_INCR_CHK_COUNT(); \
127 (_chk)->whoTo = NULL; \
130 (_chk) = TAILQ_FIRST(&(_stcb)->asoc.free_chunks); \
131 TAILQ_REMOVE(&(_stcb)->asoc.free_chunks, (_chk), sctp_next); \
132 atomic_subtract_int(&SCTP_BASE_INFO(ipi_free_chunks), 1); \
133 SCTP_STAT_INCR(sctps_cached_chk); \
134 (_stcb)->asoc.free_chunk_cnt--; \
140 #define sctp_free_remote_addr(__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; \
150 if ((__net)->src_addr_selected) { \
151 sctp_free_ifa((__net)->ro._s_addr); \
152 (__net)->ro._s_addr = NULL; \
154 (__net)->src_addr_selected = 0; \
155 (__net)->dest_state = SCTP_ADDR_NOT_REACHABLE; \
156 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_net), (__net)); \
157 SCTP_DECR_RADDR_COUNT(); \
162 #define sctp_sbfree(ctl, stcb, sb, m) { \
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"); \
168 val = atomic_fetchadd_int(&(sb)->sb_mbcnt,-(MSIZE)); \
170 panic("sb_mbcnt goes negative"); \
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"); \
177 val = atomic_fetchadd_int(&(stcb)->asoc.my_rwnd_control_len,-(MSIZE)); \
179 panic("asoc->mbcnt goes negative"); \
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))); \
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); \
192 atomic_add_int(&(stcb)->asoc.sb_cc,SCTP_BUF_LEN((m))); \
193 atomic_add_int(&(stcb)->asoc.my_rwnd_control_len, MSIZE); \
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))); \
201 #define sctp_ucount_incr(val) { \
205 #define sctp_ucount_decr(val) { \
213 #define sctp_mbuf_crush(data) do { \
216 while(_m && (SCTP_BUF_LEN(_m) == 0)) { \
217 (data) = SCTP_BUF_NEXT(_m); \
218 SCTP_BUF_NEXT(_m) = NULL; \
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; \
228 tp1->whoTo->flight_size = 0; \
231 #define sctp_flight_size_increase(tp1) do { \
232 (tp1)->whoTo->flight_size += (tp1)->book_size; \
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--; \
252 stcb->asoc.total_flight = 0; \
253 stcb->asoc.total_flight_count = 0; \
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; \
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--; \
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 *));
303 void sctp_input_with_port __P((struct mbuf *, int, uint16_t));
304 void sctp_input __P((struct mbuf *, int));
305 void sctp_pathmtu_adjustment __P((struct sctp_inpcb *, struct sctp_tcb *, struct sctp_nets *, uint16_t));
306 void sctp_drain __P((void));
307 void sctp_init __P((void));
309 void sctp_finish(void);
311 int sctp_flush(struct socket *, int);
312 int sctp_shutdown __P((struct socket *));
314 __P((struct sctp_inpcb *, struct ip *ip, struct sctphdr *,
315 struct sockaddr *, struct sctp_tcb *,
316 struct sctp_nets *));
318 int sctp_bindx(struct socket *, int, struct sockaddr_storage *,
319 int, int, struct proc *);
321 /* can't use sctp_assoc_t here */
322 int sctp_peeloff(struct socket *, struct socket *, int, caddr_t, int *);
324 int sctp_ingetaddr(struct socket *,
328 int sctp_peeraddr(struct socket *,
332 int sctp_listen(struct socket *, int, struct thread *);
334 int sctp_accept(struct socket *, struct sockaddr **);
338 #endif /* !_NETINET_SCTP_VAR_H_ */