1 /*- 2 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are met: 6 * 7 * a) Redistributions of source code must retain the above copyright notice, 8 * this list of conditions and the following disclaimer. 9 * 10 * b) Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the distribution. 13 * 14 * c) Neither the name of Cisco Systems, Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived 16 * from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 20 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 28 * THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 /* $KAME: sctp_var.h,v 1.24 2005/03/06 16:04:19 itojun Exp $ */ 32 33 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD$"); 35 36 #ifndef _NETINET_SCTP_VAR_H_ 37 #define _NETINET_SCTP_VAR_H_ 38 39 #include <netinet/sctp_uio.h> 40 41 #if defined(_KERNEL) 42 43 extern struct pr_usrreqs sctp_usrreqs; 44 45 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) 50 51 #define sctp_sbspace(asoc, sb) ((long) (((sb)->sb_hiwat > (asoc)->sb_cc) ? ((sb)->sb_hiwat - (asoc)->sb_cc) : 0)) 52 53 #define sctp_sbspace_failedmsgs(sb) ((long) (((sb)->sb_hiwat > (sb)->sb_cc) ? ((sb)->sb_hiwat - (sb)->sb_cc) : 0)) 54 55 #define sctp_sbspace_sub(a,b) ((a > b) ? (a - b) : 0) 56 57 /* 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 64 * right now :-D 65 */ 66 67 #define sctp_free_a_readq(_stcb, _readq) { \ 68 SCTP_ZONE_FREE(sctppcbinfo.ipi_zone_readq, (_readq)); \ 69 SCTP_DECR_READQ_COUNT(); \ 70 } 71 72 #define sctp_alloc_a_readq(_stcb, _readq) { \ 73 (_readq) = SCTP_ZONE_GET(sctppcbinfo.ipi_zone_readq, struct sctp_queued_to_read); \ 74 if ((_readq)) { \ 75 SCTP_INCR_READQ_COUNT(); \ 76 } \ 77 } 78 79 #define sctp_free_a_strmoq(_stcb, _strmoq) { \ 80 SCTP_ZONE_FREE(sctppcbinfo.ipi_zone_strmoq, (_strmoq)); \ 81 SCTP_DECR_STRMOQ_COUNT(); \ 82 } 83 84 #define sctp_alloc_a_strmoq(_stcb, _strmoq) { \ 85 (_strmoq) = SCTP_ZONE_GET(sctppcbinfo.ipi_zone_strmoq, struct sctp_stream_queue_pending); \ 86 if ((_strmoq)) { \ 87 SCTP_INCR_STRMOQ_COUNT(); \ 88 } \ 89 } 90 91 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(); \ 97 } else { \ 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); \ 101 } \ 102 } 103 104 #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); \ 107 if ((_chk)) { \ 108 SCTP_INCR_CHK_COUNT(); \ 109 } \ 110 } else { \ 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--; \ 116 } \ 117 } 118 119 120 121 #define sctp_free_remote_addr(__net) { \ 122 if ((__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; \ 130 } \ 131 if ((__net)->src_addr_selected) { \ 132 sctp_free_ifa((__net)->ro._s_addr); \ 133 (__net)->ro._s_addr = NULL; \ 134 } \ 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(); \ 139 } \ 140 } \ 141 } 142 143 #define sctp_sbfree(ctl, stcb, sb, m) { \ 144 uint32_t val; \ 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"); \ 148 } \ 149 val = atomic_fetchadd_int(&(sb)->sb_mbcnt,-(MSIZE)); \ 150 if (val < MSIZE) { \ 151 panic("sb_mbcnt goes negative"); \ 152 } \ 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"); \ 157 } \ 158 } \ 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"); \ 163 } \ 164 val = atomic_fetchadd_int(&(stcb)->asoc.sb_mbcnt,-(MSIZE)); \ 165 if (val < MSIZE) { \ 166 panic("asoc->mbcnt goes negative"); \ 167 } \ 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"); \ 172 } \ 173 } \ 174 } \ 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))); \ 178 } 179 180 181 #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)); \ 186 if (stcb) { \ 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)); \ 191 } \ 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))); \ 195 } 196 197 198 #define sctp_ucount_incr(val) { \ 199 val++; \ 200 } 201 202 #define sctp_ucount_decr(val) { \ 203 if (val > 0) { \ 204 val--; \ 205 } else { \ 206 val = 0; \ 207 } \ 208 } 209 210 #define sctp_mbuf_crush(data) do { \ 211 struct mbuf *_m; \ 212 _m = (data); \ 213 while(_m && (SCTP_BUF_LEN(_m) == 0)) { \ 214 (data) = SCTP_BUF_NEXT(_m); \ 215 SCTP_BUF_NEXT(_m) = NULL; \ 216 sctp_m_free(_m); \ 217 _m = (data); \ 218 } \ 219 } while (0) 220 221 #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; \ 225 else \ 226 tp1->whoTo->flight_size = 0; \ 227 } while (0) 228 229 230 #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--; \ 235 } else { \ 236 stcb->asoc.total_flight = 0; \ 237 stcb->asoc.total_flight_count = 0; \ 238 } \ 239 } while (0) 240 241 #else 242 243 #define sctp_flight_size_decrease(tp1) do { \ 244 if (tp1->whoTo->flight_size >= tp1->book_size) \ 245 tp1->whoTo->flight_size -= tp1->book_size; \ 246 else \ 247 panic("flight size corruption"); \ 248 } while (0) 249 250 251 #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--; \ 256 } else { \ 257 panic("total flight size corruption"); \ 258 } \ 259 } while (0) 260 261 #endif 262 263 #define sctp_flight_size_increase(tp1) do { \ 264 (tp1)->whoTo->flight_size += (tp1)->book_size; \ 265 } while (0) 266 267 268 #define sctp_total_flight_increase(stcb, tp1) do { \ 269 (stcb)->asoc.total_flight_count++; \ 270 (stcb)->asoc.total_flight += (tp1)->book_size; \ 271 } while (0) 272 273 struct sctp_nets; 274 struct sctp_inpcb; 275 struct sctp_tcb; 276 struct sctphdr; 277 278 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)); 283 284 285 void sctp_pcbinfo_cleanup(void); 286 287 int sctp_shutdown __P((struct socket *)); 288 void sctp_notify 289 __P((struct sctp_inpcb *, int, struct sctphdr *, 290 struct sockaddr *, struct sctp_tcb *, 291 struct sctp_nets *)); 292 293 int sctp_bindx(struct socket *, int, struct sockaddr_storage *, 294 int, int, struct proc *); 295 296 /* can't use sctp_assoc_t here */ 297 int sctp_peeloff(struct socket *, struct socket *, int, caddr_t, int *); 298 299 int sctp_ingetaddr(struct socket *, 300 struct sockaddr ** 301 ); 302 303 int sctp_peeraddr(struct socket *, 304 struct sockaddr ** 305 ); 306 307 int sctp_listen(struct socket *, int, struct thread *); 308 309 int sctp_accept(struct socket *, struct sockaddr **); 310 311 #endif /* _KERNEL */ 312 313 #endif /* !_NETINET_SCTP_VAR_H_ */ 314