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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>
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 #define sctp_sbspace(asoc, sb) ((long) (((sb)->sb_hiwat > (asoc)->sb_cc) ? ((sb)->sb_hiwat - (asoc)->sb_cc) : 0))
53 #define sctp_sbspace_failedmsgs(sb) ((long) (((sb)->sb_hiwat > (sb)->sb_cc) ? ((sb)->sb_hiwat - (sb)->sb_cc) : 0))
55 #define sctp_sbspace_sub(a,b) ((a > b) ? (a - b) : 0)
58 * I tried to cache the readq entries at one point. But the reality
59 * is that it did not add any performance since this meant we had to
60 * lock the STCB on read. And at that point once you have to do an
61 * extra lock, it really does not matter if the lock is in the ZONE
62 * stuff or in our code. Note that this same problem would occur with
63 * an mbuf cache as well so it is not really worth doing, at least
67 #define sctp_free_a_readq(_stcb, _readq) { \
68 SCTP_ZONE_FREE(sctppcbinfo.ipi_zone_readq, (_readq)); \
69 SCTP_DECR_READQ_COUNT(); \
72 #define sctp_alloc_a_readq(_stcb, _readq) { \
73 (_readq) = SCTP_ZONE_GET(sctppcbinfo.ipi_zone_readq, struct sctp_queued_to_read); \
75 SCTP_INCR_READQ_COUNT(); \
79 #define sctp_free_a_strmoq(_stcb, _strmoq) { \
80 SCTP_ZONE_FREE(sctppcbinfo.ipi_zone_strmoq, (_strmoq)); \
81 SCTP_DECR_STRMOQ_COUNT(); \
84 #define sctp_alloc_a_strmoq(_stcb, _strmoq) { \
85 (_strmoq) = SCTP_ZONE_GET(sctppcbinfo.ipi_zone_strmoq, struct sctp_stream_queue_pending); \
87 SCTP_INCR_STRMOQ_COUNT(); \
92 #define sctp_free_a_chunk(_stcb, _chk) { \
93 if (((_stcb)->asoc.free_chunk_cnt > sctp_asoc_free_resc_limit) || \
94 (sctppcbinfo.ipi_free_chunks > sctp_system_free_resc_limit)) { \
95 SCTP_ZONE_FREE(sctppcbinfo.ipi_zone_chunk, (_chk)); \
96 SCTP_DECR_CHK_COUNT(); \
98 TAILQ_INSERT_TAIL(&(_stcb)->asoc.free_chunks, (_chk), sctp_next); \
99 (_stcb)->asoc.free_chunk_cnt++; \
100 atomic_add_int(&sctppcbinfo.ipi_free_chunks, 1); \
104 #define sctp_alloc_a_chunk(_stcb, _chk) { \
105 if (TAILQ_EMPTY(&(_stcb)->asoc.free_chunks)) { \
106 (_chk) = SCTP_ZONE_GET(sctppcbinfo.ipi_zone_chunk, struct sctp_tmit_chunk); \
108 SCTP_INCR_CHK_COUNT(); \
111 (_chk) = TAILQ_FIRST(&(_stcb)->asoc.free_chunks); \
112 TAILQ_REMOVE(&(_stcb)->asoc.free_chunks, (_chk), sctp_next); \
113 atomic_subtract_int(&sctppcbinfo.ipi_free_chunks, 1); \
114 SCTP_STAT_INCR(sctps_cached_chk); \
115 (_stcb)->asoc.free_chunk_cnt--; \
121 #define sctp_free_remote_addr(__net) { \
123 if (atomic_fetchadd_int(&(__net)->ref_count, -1) == 1) { \
124 (void)SCTP_OS_TIMER_STOP(&(__net)->rxt_timer.timer); \
125 (void)SCTP_OS_TIMER_STOP(&(__net)->pmtu_timer.timer); \
126 (void)SCTP_OS_TIMER_STOP(&(__net)->fr_timer.timer); \
127 if ((__net)->ro.ro_rt) { \
128 RTFREE((__net)->ro.ro_rt); \
129 (__net)->ro.ro_rt = NULL; \
131 if ((__net)->src_addr_selected) { \
132 sctp_free_ifa((__net)->ro._s_addr); \
133 (__net)->ro._s_addr = NULL; \
135 (__net)->src_addr_selected = 0; \
136 (__net)->dest_state = SCTP_ADDR_NOT_REACHABLE; \
137 SCTP_ZONE_FREE(sctppcbinfo.ipi_zone_net, (__net)); \
138 SCTP_DECR_RADDR_COUNT(); \
143 #define sctp_sbfree(ctl, stcb, sb, m) { \
145 val = atomic_fetchadd_int(&(sb)->sb_cc,-(SCTP_BUF_LEN((m)))); \
146 if (val < SCTP_BUF_LEN((m))) { \
147 panic("sb_cc goes negative"); \
149 val = atomic_fetchadd_int(&(sb)->sb_mbcnt,-(MSIZE)); \
151 panic("sb_mbcnt goes negative"); \
153 if (SCTP_BUF_IS_EXTENDED(m)) { \
154 val = atomic_fetchadd_int(&(sb)->sb_mbcnt,-(SCTP_BUF_EXTEND_SIZE(m))); \
155 if (val < SCTP_BUF_EXTEND_SIZE(m)) { \
156 panic("sb_mbcnt goes negative2"); \
159 if (((ctl)->do_not_ref_stcb == 0) && stcb) {\
160 val = atomic_fetchadd_int(&(stcb)->asoc.sb_cc,-(SCTP_BUF_LEN((m)))); \
161 if (val < SCTP_BUF_LEN((m))) {\
162 panic("stcb->sb_cc goes negative"); \
164 val = atomic_fetchadd_int(&(stcb)->asoc.sb_mbcnt,-(MSIZE)); \
166 panic("asoc->mbcnt goes negative"); \
168 if (SCTP_BUF_IS_EXTENDED(m)) { \
169 val = atomic_fetchadd_int(&(stcb)->asoc.sb_mbcnt,-(SCTP_BUF_EXTEND_SIZE(m))); \
170 if (val < SCTP_BUF_EXTEND_SIZE(m)) { \
171 panic("assoc stcb->mbcnt would go negative"); \
175 if (SCTP_BUF_TYPE(m) != MT_DATA && SCTP_BUF_TYPE(m) != MT_HEADER && \
176 SCTP_BUF_TYPE(m) != MT_OOBDATA) \
177 atomic_subtract_int(&(sb)->sb_ctl,SCTP_BUF_LEN((m))); \
181 #define sctp_sballoc(stcb, sb, m) { \
182 atomic_add_int(&(sb)->sb_cc,SCTP_BUF_LEN((m))); \
183 atomic_add_int(&(sb)->sb_mbcnt, MSIZE); \
184 if (SCTP_BUF_IS_EXTENDED(m)) \
185 atomic_add_int(&(sb)->sb_mbcnt,SCTP_BUF_EXTEND_SIZE(m)); \
187 atomic_add_int(&(stcb)->asoc.sb_cc,SCTP_BUF_LEN((m))); \
188 atomic_add_int(&(stcb)->asoc.sb_mbcnt, MSIZE); \
189 if (SCTP_BUF_IS_EXTENDED(m)) \
190 atomic_add_int(&(stcb)->asoc.sb_mbcnt,SCTP_BUF_EXTEND_SIZE(m)); \
192 if (SCTP_BUF_TYPE(m) != MT_DATA && SCTP_BUF_TYPE(m) != MT_HEADER && \
193 SCTP_BUF_TYPE(m) != MT_OOBDATA) \
194 atomic_add_int(&(sb)->sb_ctl,SCTP_BUF_LEN((m))); \
198 #define sctp_ucount_incr(val) { \
202 #define sctp_ucount_decr(val) { \
210 #define sctp_mbuf_crush(data) do { \
213 while(_m && (SCTP_BUF_LEN(_m) == 0)) { \
214 (data) = SCTP_BUF_NEXT(_m); \
215 SCTP_BUF_NEXT(_m) = NULL; \
221 #ifdef RANDY_WILL_USE_LATER /* this will be the non-invarant version */
222 #define sctp_flight_size_decrease(tp1) do { \
223 if (tp1->whoTo->flight_size >= tp1->book_size) \
224 tp1->whoTo->flight_size -= tp1->book_size; \
226 tp1->whoTo->flight_size = 0; \
230 #define sctp_total_flight_decrease(stcb, tp1) do { \
231 if (stcb->asoc.total_flight >= tp1->book_size) { \
232 stcb->asoc.total_flight -= tp1->book_size; \
233 if (stcb->asoc.total_flight_count > 0) \
234 stcb->asoc.total_flight_count--; \
236 stcb->asoc.total_flight = 0; \
237 stcb->asoc.total_flight_count = 0; \
243 #define sctp_flight_size_decrease(tp1) do { \
244 if (tp1->whoTo->flight_size >= tp1->book_size) \
245 tp1->whoTo->flight_size -= tp1->book_size; \
247 panic("flight size corruption"); \
251 #define sctp_total_flight_decrease(stcb, tp1) do { \
252 if (stcb->asoc.total_flight >= tp1->book_size) { \
253 stcb->asoc.total_flight -= tp1->book_size; \
254 if (stcb->asoc.total_flight_count > 0) \
255 stcb->asoc.total_flight_count--; \
257 panic("total flight size corruption"); \
263 #define sctp_flight_size_increase(tp1) do { \
264 (tp1)->whoTo->flight_size += (tp1)->book_size; \
268 #define sctp_total_flight_increase(stcb, tp1) do { \
269 (stcb)->asoc.total_flight_count++; \
270 (stcb)->asoc.total_flight += (tp1)->book_size; \
278 void sctp_ctlinput __P((int, struct sockaddr *, void *));
279 int sctp_ctloutput __P((struct socket *, struct sockopt *));
280 void sctp_input __P((struct mbuf *, int));
281 void sctp_drain __P((void));
282 void sctp_init __P((void));
285 void sctp_pcbinfo_cleanup(void);
287 int sctp_shutdown __P((struct socket *));
289 __P((struct sctp_inpcb *, int, struct sctphdr *,
290 struct sockaddr *, struct sctp_tcb *,
291 struct sctp_nets *));
293 int sctp_bindx(struct socket *, int, struct sockaddr_storage *,
294 int, int, struct proc *);
296 /* can't use sctp_assoc_t here */
297 int sctp_peeloff(struct socket *, struct socket *, int, caddr_t, int *);
299 int sctp_ingetaddr(struct socket *,
303 int sctp_peeraddr(struct socket *,
307 int sctp_listen(struct socket *, int, struct thread *);
309 int sctp_accept(struct socket *, struct sockaddr **);
313 #endif /* !_NETINET_SCTP_VAR_H_ */