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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 if (((_stcb)->asoc.free_strmoq_cnt > sctp_asoc_free_resc_limit) || \
81 (sctppcbinfo.ipi_free_strmoq > sctp_system_free_resc_limit)) { \
82 SCTP_ZONE_FREE(sctppcbinfo.ipi_zone_strmoq, (_strmoq)); \
83 SCTP_DECR_STRMOQ_COUNT(); \
85 TAILQ_INSERT_TAIL(&(_stcb)->asoc.free_strmoq, (_strmoq), next); \
86 (_stcb)->asoc.free_strmoq_cnt++; \
87 atomic_add_int(&sctppcbinfo.ipi_free_strmoq, 1); \
91 #define sctp_alloc_a_strmoq(_stcb, _strmoq) { \
92 if (TAILQ_EMPTY(&(_stcb)->asoc.free_strmoq)) { \
93 (_strmoq) = SCTP_ZONE_GET(sctppcbinfo.ipi_zone_strmoq, struct sctp_stream_queue_pending); \
95 SCTP_INCR_STRMOQ_COUNT(); \
98 (_strmoq) = TAILQ_FIRST(&(_stcb)->asoc.free_strmoq); \
99 TAILQ_REMOVE(&(_stcb)->asoc.free_strmoq, (_strmoq), next); \
100 atomic_subtract_int(&sctppcbinfo.ipi_free_strmoq, 1); \
101 (_stcb)->asoc.free_strmoq_cnt--; \
106 #define sctp_free_a_chunk(_stcb, _chk) { \
107 if (((_stcb)->asoc.free_chunk_cnt > sctp_asoc_free_resc_limit) || \
108 (sctppcbinfo.ipi_free_chunks > sctp_system_free_resc_limit)) { \
109 SCTP_ZONE_FREE(sctppcbinfo.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(&sctppcbinfo.ipi_free_chunks, 1); \
118 #define sctp_alloc_a_chunk(_stcb, _chk) { \
119 if (TAILQ_EMPTY(&(_stcb)->asoc.free_chunks)) { \
120 (_chk) = SCTP_ZONE_GET(sctppcbinfo.ipi_zone_chunk, struct sctp_tmit_chunk); \
122 SCTP_INCR_CHK_COUNT(); \
125 (_chk) = TAILQ_FIRST(&(_stcb)->asoc.free_chunks); \
126 TAILQ_REMOVE(&(_stcb)->asoc.free_chunks, (_chk), sctp_next); \
127 atomic_subtract_int(&sctppcbinfo.ipi_free_chunks, 1); \
128 (_stcb)->asoc.free_chunk_cnt--; \
134 #define sctp_free_remote_addr(__net) { \
136 if (atomic_fetchadd_int(&(__net)->ref_count, -1) == 1) { \
137 SCTP_OS_TIMER_STOP(&(__net)->rxt_timer.timer); \
138 SCTP_OS_TIMER_STOP(&(__net)->pmtu_timer.timer); \
139 SCTP_OS_TIMER_STOP(&(__net)->fr_timer.timer); \
140 if ((__net)->ro.ro_rt) { \
141 RTFREE((__net)->ro.ro_rt); \
142 (__net)->ro.ro_rt = NULL; \
144 if ((__net)->src_addr_selected) { \
145 sctp_free_ifa((__net)->ro._s_addr); \
146 (__net)->ro._s_addr = NULL; \
148 (__net)->src_addr_selected = 0; \
149 (__net)->dest_state = SCTP_ADDR_NOT_REACHABLE; \
150 SCTP_ZONE_FREE(sctppcbinfo.ipi_zone_net, (__net)); \
151 SCTP_DECR_RADDR_COUNT(); \
156 #define sctp_sbfree(ctl, stcb, sb, m) { \
158 val = atomic_fetchadd_int(&(sb)->sb_cc,-(SCTP_BUF_LEN((m)))); \
159 if (val < SCTP_BUF_LEN((m))) { \
160 panic("sb_cc goes negative"); \
162 val = atomic_fetchadd_int(&(sb)->sb_mbcnt,-(MSIZE)); \
164 panic("sb_mbcnt goes negative"); \
166 if (SCTP_BUF_IS_EXTENDED(m)) { \
167 val = atomic_fetchadd_int(&(sb)->sb_mbcnt,-(SCTP_BUF_EXTEND_SIZE(m))); \
168 if (val < SCTP_BUF_EXTEND_SIZE(m)) { \
169 panic("sb_mbcnt goes negative2"); \
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.sb_mbcnt,-(MSIZE)); \
179 panic("asoc->mbcnt goes negative"); \
181 if (SCTP_BUF_IS_EXTENDED(m)) { \
182 val = atomic_fetchadd_int(&(stcb)->asoc.sb_mbcnt,-(SCTP_BUF_EXTEND_SIZE(m))); \
183 if (val < SCTP_BUF_EXTEND_SIZE(m)) { \
184 panic("assoc stcb->mbcnt would go negative"); \
188 if (SCTP_BUF_TYPE(m) != MT_DATA && SCTP_BUF_TYPE(m) != MT_HEADER && \
189 SCTP_BUF_TYPE(m) != MT_OOBDATA) \
190 atomic_subtract_int(&(sb)->sb_ctl,SCTP_BUF_LEN((m))); \
194 #define sctp_sballoc(stcb, sb, m) { \
195 atomic_add_int(&(sb)->sb_cc,SCTP_BUF_LEN((m))); \
196 atomic_add_int(&(sb)->sb_mbcnt, MSIZE); \
197 if (SCTP_BUF_IS_EXTENDED(m)) \
198 atomic_add_int(&(sb)->sb_mbcnt,SCTP_BUF_EXTEND_SIZE(m)); \
200 atomic_add_int(&(stcb)->asoc.sb_cc,SCTP_BUF_LEN((m))); \
201 atomic_add_int(&(stcb)->asoc.sb_mbcnt, MSIZE); \
202 if (SCTP_BUF_IS_EXTENDED(m)) \
203 atomic_add_int(&(stcb)->asoc.sb_mbcnt,SCTP_BUF_EXTEND_SIZE(m)); \
205 if (SCTP_BUF_TYPE(m) != MT_DATA && SCTP_BUF_TYPE(m) != MT_HEADER && \
206 SCTP_BUF_TYPE(m) != MT_OOBDATA) \
207 atomic_add_int(&(sb)->sb_ctl,SCTP_BUF_LEN((m))); \
211 #define sctp_ucount_incr(val) { \
215 #define sctp_ucount_decr(val) { \
223 #define sctp_mbuf_crush(data) do { \
226 while(_m && (SCTP_BUF_LEN(_m) == 0)) { \
227 (data) = SCTP_BUF_NEXT(_m); \
228 SCTP_BUF_NEXT(_m) = NULL; \
240 void sctp_ctlinput __P((int, struct sockaddr *, void *));
241 int sctp_ctloutput __P((struct socket *, struct sockopt *));
242 void sctp_input __P((struct mbuf *, int));
243 void sctp_drain __P((void));
244 void sctp_init __P((void));
247 void sctp_pcbinfo_cleanup(void);
249 int sctp_shutdown __P((struct socket *));
251 __P((struct sctp_inpcb *, int, struct sctphdr *,
252 struct sockaddr *, struct sctp_tcb *,
253 struct sctp_nets *));
256 void ip_2_ip6_hdr __P((struct ip6_hdr *, struct ip *));
260 int sctp_bindx(struct socket *, int, struct sockaddr_storage *,
261 int, int, struct proc *);
263 /* can't use sctp_assoc_t here */
264 int sctp_peeloff(struct socket *, struct socket *, int, caddr_t, int *);
266 sctp_assoc_t sctp_getassocid(struct sockaddr *);
269 int sctp_ingetaddr(struct socket *,
273 int sctp_peeraddr(struct socket *,
277 int sctp_listen(struct socket *, int, struct thread *);
279 int sctp_accept(struct socket *, struct sockaddr **);
283 #endif /* !_NETINET_SCTP_VAR_H_ */