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 SCTP_TCB_LOCK_ASSERT((_stcb)); \ 94 if ((_chk)->whoTo) { \ 95 sctp_free_remote_addr((_chk)->whoTo); \ 96 (_chk)->whoTo = NULL; \ 97 } \ 98 if (((_stcb)->asoc.free_chunk_cnt > sctp_asoc_free_resc_limit) || \ 99 (sctppcbinfo.ipi_free_chunks > sctp_system_free_resc_limit)) { \ 100 SCTP_ZONE_FREE(sctppcbinfo.ipi_zone_chunk, (_chk)); \ 101 SCTP_DECR_CHK_COUNT(); \ 102 } else { \ 103 TAILQ_INSERT_TAIL(&(_stcb)->asoc.free_chunks, (_chk), sctp_next); \ 104 (_stcb)->asoc.free_chunk_cnt++; \ 105 atomic_add_int(&sctppcbinfo.ipi_free_chunks, 1); \ 106 } \ 107 } 108 109 #define sctp_alloc_a_chunk(_stcb, _chk) { \ 110 if (TAILQ_EMPTY(&(_stcb)->asoc.free_chunks)) { \ 111 (_chk) = SCTP_ZONE_GET(sctppcbinfo.ipi_zone_chunk, struct sctp_tmit_chunk); \ 112 if ((_chk)) { \ 113 SCTP_INCR_CHK_COUNT(); \ 114 (_chk)->whoTo = NULL; \ 115 } \ 116 } else { \ 117 (_chk) = TAILQ_FIRST(&(_stcb)->asoc.free_chunks); \ 118 TAILQ_REMOVE(&(_stcb)->asoc.free_chunks, (_chk), sctp_next); \ 119 atomic_subtract_int(&sctppcbinfo.ipi_free_chunks, 1); \ 120 SCTP_STAT_INCR(sctps_cached_chk); \ 121 (_stcb)->asoc.free_chunk_cnt--; \ 122 } \ 123 } 124 125 126 127 #define sctp_free_remote_addr(__net) { \ 128 if ((__net)) { \ 129 if (atomic_fetchadd_int(&(__net)->ref_count, -1) == 1) { \ 130 (void)SCTP_OS_TIMER_STOP(&(__net)->rxt_timer.timer); \ 131 (void)SCTP_OS_TIMER_STOP(&(__net)->pmtu_timer.timer); \ 132 (void)SCTP_OS_TIMER_STOP(&(__net)->fr_timer.timer); \ 133 if ((__net)->ro.ro_rt) { \ 134 RTFREE((__net)->ro.ro_rt); \ 135 (__net)->ro.ro_rt = NULL; \ 136 } \ 137 if ((__net)->src_addr_selected) { \ 138 sctp_free_ifa((__net)->ro._s_addr); \ 139 (__net)->ro._s_addr = NULL; \ 140 } \ 141 (__net)->src_addr_selected = 0; \ 142 (__net)->dest_state = SCTP_ADDR_NOT_REACHABLE; \ 143 SCTP_ZONE_FREE(sctppcbinfo.ipi_zone_net, (__net)); \ 144 SCTP_DECR_RADDR_COUNT(); \ 145 } \ 146 } \ 147 } 148 149 #define sctp_sbfree(ctl, stcb, sb, m) { \ 150 uint32_t val; \ 151 val = atomic_fetchadd_int(&(sb)->sb_cc,-(SCTP_BUF_LEN((m)))); \ 152 if (val < SCTP_BUF_LEN((m))) { \ 153 panic("sb_cc goes negative"); \ 154 } \ 155 val = atomic_fetchadd_int(&(sb)->sb_mbcnt,-(MSIZE)); \ 156 if (val < MSIZE) { \ 157 panic("sb_mbcnt goes negative"); \ 158 } \ 159 if (SCTP_BUF_IS_EXTENDED(m)) { \ 160 val = atomic_fetchadd_int(&(sb)->sb_mbcnt,-(SCTP_BUF_EXTEND_SIZE(m))); \ 161 if (val < SCTP_BUF_EXTEND_SIZE(m)) { \ 162 panic("sb_mbcnt goes negative2"); \ 163 } \ 164 } \ 165 if (((ctl)->do_not_ref_stcb == 0) && stcb) {\ 166 val = atomic_fetchadd_int(&(stcb)->asoc.sb_cc,-(SCTP_BUF_LEN((m)))); \ 167 if (val < SCTP_BUF_LEN((m))) {\ 168 panic("stcb->sb_cc goes negative"); \ 169 } \ 170 val = atomic_fetchadd_int(&(stcb)->asoc.sb_mbcnt,-(MSIZE)); \ 171 if (val < MSIZE) { \ 172 panic("asoc->mbcnt goes negative"); \ 173 } \ 174 if (SCTP_BUF_IS_EXTENDED(m)) { \ 175 val = atomic_fetchadd_int(&(stcb)->asoc.sb_mbcnt,-(SCTP_BUF_EXTEND_SIZE(m))); \ 176 if (val < SCTP_BUF_EXTEND_SIZE(m)) { \ 177 panic("assoc stcb->mbcnt would go negative"); \ 178 } \ 179 } \ 180 } \ 181 if (SCTP_BUF_TYPE(m) != MT_DATA && SCTP_BUF_TYPE(m) != MT_HEADER && \ 182 SCTP_BUF_TYPE(m) != MT_OOBDATA) \ 183 atomic_subtract_int(&(sb)->sb_ctl,SCTP_BUF_LEN((m))); \ 184 } 185 186 187 #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); \ 190 if (SCTP_BUF_IS_EXTENDED(m)) \ 191 atomic_add_int(&(sb)->sb_mbcnt,SCTP_BUF_EXTEND_SIZE(m)); \ 192 if (stcb) { \ 193 atomic_add_int(&(stcb)->asoc.sb_cc,SCTP_BUF_LEN((m))); \ 194 atomic_add_int(&(stcb)->asoc.sb_mbcnt, MSIZE); \ 195 if (SCTP_BUF_IS_EXTENDED(m)) \ 196 atomic_add_int(&(stcb)->asoc.sb_mbcnt,SCTP_BUF_EXTEND_SIZE(m)); \ 197 } \ 198 if (SCTP_BUF_TYPE(m) != MT_DATA && SCTP_BUF_TYPE(m) != MT_HEADER && \ 199 SCTP_BUF_TYPE(m) != MT_OOBDATA) \ 200 atomic_add_int(&(sb)->sb_ctl,SCTP_BUF_LEN((m))); \ 201 } 202 203 204 #define sctp_ucount_incr(val) { \ 205 val++; \ 206 } 207 208 #define sctp_ucount_decr(val) { \ 209 if (val > 0) { \ 210 val--; \ 211 } else { \ 212 val = 0; \ 213 } \ 214 } 215 216 #define sctp_mbuf_crush(data) do { \ 217 struct mbuf *_m; \ 218 _m = (data); \ 219 while(_m && (SCTP_BUF_LEN(_m) == 0)) { \ 220 (data) = SCTP_BUF_NEXT(_m); \ 221 SCTP_BUF_NEXT(_m) = NULL; \ 222 sctp_m_free(_m); \ 223 _m = (data); \ 224 } \ 225 } while (0) 226 227 #define sctp_flight_size_decrease(tp1) do { \ 228 if (tp1->whoTo->flight_size >= tp1->book_size) \ 229 tp1->whoTo->flight_size -= tp1->book_size; \ 230 else \ 231 tp1->whoTo->flight_size = 0; \ 232 } while (0) 233 234 #define sctp_flight_size_increase(tp1) do { \ 235 (tp1)->whoTo->flight_size += (tp1)->book_size; \ 236 } while (0) 237 238 #ifdef SCTP_FS_SPEC_LOG 239 #define sctp_total_flight_decrease(stcb, tp1) do { \ 240 if(stcb->asoc.fs_index > SCTP_FS_SPEC_LOG_SIZE) \ 241 stcb->asoc.fs_index = 0;\ 242 stcb->asoc.fslog[stcb->asoc.fs_index].total_flight = stcb->asoc.total_flight; \ 243 stcb->asoc.fslog[stcb->asoc.fs_index].tsn = tp1->rec.data.TSN_seq; \ 244 stcb->asoc.fslog[stcb->asoc.fs_index].book = tp1->book_size; \ 245 stcb->asoc.fslog[stcb->asoc.fs_index].sent = tp1->sent; \ 246 stcb->asoc.fslog[stcb->asoc.fs_index].incr = 0; \ 247 stcb->asoc.fslog[stcb->asoc.fs_index].decr = 1; \ 248 stcb->asoc.fs_index++; \ 249 tp1->window_probe = 0; \ 250 if (stcb->asoc.total_flight >= tp1->book_size) { \ 251 stcb->asoc.total_flight -= tp1->book_size; \ 252 if (stcb->asoc.total_flight_count > 0) \ 253 stcb->asoc.total_flight_count--; \ 254 } else { \ 255 stcb->asoc.total_flight = 0; \ 256 stcb->asoc.total_flight_count = 0; \ 257 } \ 258 } while (0) 259 260 #define sctp_total_flight_increase(stcb, tp1) do { \ 261 if(stcb->asoc.fs_index > SCTP_FS_SPEC_LOG_SIZE) \ 262 stcb->asoc.fs_index = 0;\ 263 stcb->asoc.fslog[stcb->asoc.fs_index].total_flight = stcb->asoc.total_flight; \ 264 stcb->asoc.fslog[stcb->asoc.fs_index].tsn = tp1->rec.data.TSN_seq; \ 265 stcb->asoc.fslog[stcb->asoc.fs_index].book = tp1->book_size; \ 266 stcb->asoc.fslog[stcb->asoc.fs_index].sent = tp1->sent; \ 267 stcb->asoc.fslog[stcb->asoc.fs_index].incr = 1; \ 268 stcb->asoc.fslog[stcb->asoc.fs_index].decr = 0; \ 269 stcb->asoc.fs_index++; \ 270 (stcb)->asoc.total_flight_count++; \ 271 (stcb)->asoc.total_flight += (tp1)->book_size; \ 272 } while (0) 273 274 #else 275 276 #define sctp_total_flight_decrease(stcb, tp1) do { \ 277 if (stcb->asoc.total_flight >= tp1->book_size) { \ 278 stcb->asoc.total_flight -= tp1->book_size; \ 279 if (stcb->asoc.total_flight_count > 0) \ 280 stcb->asoc.total_flight_count--; \ 281 } else { \ 282 stcb->asoc.total_flight = 0; \ 283 stcb->asoc.total_flight_count = 0; \ 284 } \ 285 } while (0) 286 287 #define sctp_total_flight_increase(stcb, tp1) do { \ 288 (stcb)->asoc.total_flight_count++; \ 289 (stcb)->asoc.total_flight += (tp1)->book_size; \ 290 } while (0) 291 292 #endif 293 294 struct sctp_nets; 295 struct sctp_inpcb; 296 struct sctp_tcb; 297 struct sctphdr; 298 299 void sctp_ctlinput __P((int, struct sockaddr *, void *)); 300 int sctp_ctloutput __P((struct socket *, struct sockopt *)); 301 void sctp_input __P((struct mbuf *, int)); 302 void sctp_drain __P((void)); 303 void sctp_init __P((void)); 304 305 306 void sctp_pcbinfo_cleanup(void); 307 308 int sctp_shutdown __P((struct socket *)); 309 void sctp_notify 310 __P((struct sctp_inpcb *, int, struct sctphdr *, 311 struct sockaddr *, struct sctp_tcb *, 312 struct sctp_nets *)); 313 314 int sctp_bindx(struct socket *, int, struct sockaddr_storage *, 315 int, int, struct proc *); 316 317 /* can't use sctp_assoc_t here */ 318 int sctp_peeloff(struct socket *, struct socket *, int, caddr_t, int *); 319 320 int sctp_ingetaddr(struct socket *, 321 struct sockaddr ** 322 ); 323 324 int sctp_peeraddr(struct socket *, 325 struct sockaddr ** 326 ); 327 328 int sctp_listen(struct socket *, int, struct thread *); 329 330 int sctp_accept(struct socket *, struct sockaddr **); 331 332 #endif /* _KERNEL */ 333 334 #endif /* !_NETINET_SCTP_VAR_H_ */ 335