1 /*- 2 * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved. 3 * Copyright (c) 2008-2011, by Randall Stewart. All rights reserved. 4 * Copyright (c) 2008-2011, by Michael Tuexen. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are met: 8 * 9 * a) Redistributions of source code must retain the above copyright notice, 10 * this list of conditions and the following disclaimer. 11 * 12 * b) Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in 14 * the documentation and/or other materials provided with the distribution. 15 * 16 * c) Neither the name of Cisco Systems, Inc. nor the names of its 17 * contributors may be used to endorse or promote products derived 18 * from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 30 * THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* $KAME: sctp_var.h,v 1.24 2005/03/06 16:04:19 itojun Exp $ */ 34 35 #include <sys/cdefs.h> 36 __FBSDID("$FreeBSD$"); 37 38 #ifndef _NETINET_SCTP_VAR_H_ 39 #define _NETINET_SCTP_VAR_H_ 40 41 #include <netinet/sctp_uio.h> 42 43 #if defined(_KERNEL) || defined(__Userspace__) 44 45 extern struct pr_usrreqs sctp_usrreqs; 46 47 48 #define sctp_feature_on(inp, feature) (inp->sctp_features |= feature) 49 #define sctp_feature_off(inp, feature) (inp->sctp_features &= ~feature) 50 #define sctp_is_feature_on(inp, feature) ((inp->sctp_features & feature) == feature) 51 #define sctp_is_feature_off(inp, feature) ((inp->sctp_features & feature) == 0) 52 53 54 /* managing mobility_feature in inpcb (by micchie) */ 55 #define sctp_mobility_feature_on(inp, feature) (inp->sctp_mobility_features |= feature) 56 #define sctp_mobility_feature_off(inp, feature) (inp->sctp_mobility_features &= ~feature) 57 #define sctp_is_mobility_feature_on(inp, feature) (inp->sctp_mobility_features & feature) 58 #define sctp_is_mobility_feature_off(inp, feature) ((inp->sctp_mobility_features & feature) == 0) 59 60 #define sctp_maxspace(sb) (max((sb)->sb_hiwat,SCTP_MINIMAL_RWND)) 61 62 #define sctp_sbspace(asoc, sb) ((long) ((sctp_maxspace(sb) > (asoc)->sb_cc) ? (sctp_maxspace(sb) - (asoc)->sb_cc) : 0)) 63 64 #define sctp_sbspace_failedmsgs(sb) ((long) ((sctp_maxspace(sb) > (sb)->sb_cc) ? (sctp_maxspace(sb) - (sb)->sb_cc) : 0)) 65 66 #define sctp_sbspace_sub(a,b) ((a > b) ? (a - b) : 0) 67 68 /* 69 * I tried to cache the readq entries at one point. But the reality 70 * is that it did not add any performance since this meant we had to 71 * lock the STCB on read. And at that point once you have to do an 72 * extra lock, it really does not matter if the lock is in the ZONE 73 * stuff or in our code. Note that this same problem would occur with 74 * an mbuf cache as well so it is not really worth doing, at least 75 * right now :-D 76 */ 77 78 #define sctp_free_a_readq(_stcb, _readq) { \ 79 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), (_readq)); \ 80 SCTP_DECR_READQ_COUNT(); \ 81 } 82 83 #define sctp_alloc_a_readq(_stcb, _readq) { \ 84 (_readq) = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_readq), struct sctp_queued_to_read); \ 85 if ((_readq)) { \ 86 SCTP_INCR_READQ_COUNT(); \ 87 } \ 88 } 89 90 #define sctp_free_a_strmoq(_stcb, _strmoq, _so_locked) { \ 91 if ((_strmoq)->holds_key_ref) { \ 92 sctp_auth_key_release(stcb, sp->auth_keyid, _so_locked); \ 93 (_strmoq)->holds_key_ref = 0; \ 94 } \ 95 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_strmoq), (_strmoq)); \ 96 SCTP_DECR_STRMOQ_COUNT(); \ 97 } 98 99 #define sctp_alloc_a_strmoq(_stcb, _strmoq) { \ 100 (_strmoq) = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_strmoq), struct sctp_stream_queue_pending); \ 101 if ((_strmoq)) { \ 102 memset(_strmoq, 0, sizeof(struct sctp_stream_queue_pending)); \ 103 SCTP_INCR_STRMOQ_COUNT(); \ 104 (_strmoq)->holds_key_ref = 0; \ 105 } \ 106 } 107 108 #define sctp_free_a_chunk(_stcb, _chk, _so_locked) { \ 109 if ((_chk)->holds_key_ref) {\ 110 sctp_auth_key_release((_stcb), (_chk)->auth_keyid, _so_locked); \ 111 (_chk)->holds_key_ref = 0; \ 112 } \ 113 if (_stcb) { \ 114 SCTP_TCB_LOCK_ASSERT((_stcb)); \ 115 if ((_chk)->whoTo) { \ 116 sctp_free_remote_addr((_chk)->whoTo); \ 117 (_chk)->whoTo = NULL; \ 118 } \ 119 if (((_stcb)->asoc.free_chunk_cnt > SCTP_BASE_SYSCTL(sctp_asoc_free_resc_limit)) || \ 120 (SCTP_BASE_INFO(ipi_free_chunks) > SCTP_BASE_SYSCTL(sctp_system_free_resc_limit))) { \ 121 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), (_chk)); \ 122 SCTP_DECR_CHK_COUNT(); \ 123 } else { \ 124 TAILQ_INSERT_TAIL(&(_stcb)->asoc.free_chunks, (_chk), sctp_next); \ 125 (_stcb)->asoc.free_chunk_cnt++; \ 126 atomic_add_int(&SCTP_BASE_INFO(ipi_free_chunks), 1); \ 127 } \ 128 } else { \ 129 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), (_chk)); \ 130 SCTP_DECR_CHK_COUNT(); \ 131 } \ 132 } 133 134 #define sctp_alloc_a_chunk(_stcb, _chk) { \ 135 if (TAILQ_EMPTY(&(_stcb)->asoc.free_chunks)) { \ 136 (_chk) = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_chunk), struct sctp_tmit_chunk); \ 137 if ((_chk)) { \ 138 SCTP_INCR_CHK_COUNT(); \ 139 (_chk)->whoTo = NULL; \ 140 (_chk)->holds_key_ref = 0; \ 141 } \ 142 } else { \ 143 (_chk) = TAILQ_FIRST(&(_stcb)->asoc.free_chunks); \ 144 TAILQ_REMOVE(&(_stcb)->asoc.free_chunks, (_chk), sctp_next); \ 145 atomic_subtract_int(&SCTP_BASE_INFO(ipi_free_chunks), 1); \ 146 (_chk)->holds_key_ref = 0; \ 147 SCTP_STAT_INCR(sctps_cached_chk); \ 148 (_stcb)->asoc.free_chunk_cnt--; \ 149 } \ 150 } 151 152 153 #define sctp_free_remote_addr(__net) { \ 154 if ((__net)) { \ 155 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&(__net)->ref_count)) { \ 156 (void)SCTP_OS_TIMER_STOP(&(__net)->rxt_timer.timer); \ 157 (void)SCTP_OS_TIMER_STOP(&(__net)->pmtu_timer.timer); \ 158 (void)SCTP_OS_TIMER_STOP(&(__net)->fr_timer.timer); \ 159 if ((__net)->ro.ro_rt) { \ 160 RTFREE((__net)->ro.ro_rt); \ 161 (__net)->ro.ro_rt = NULL; \ 162 } \ 163 if ((__net)->src_addr_selected) { \ 164 sctp_free_ifa((__net)->ro._s_addr); \ 165 (__net)->ro._s_addr = NULL; \ 166 } \ 167 (__net)->src_addr_selected = 0; \ 168 (__net)->dest_state = SCTP_ADDR_NOT_REACHABLE; \ 169 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_net), (__net)); \ 170 SCTP_DECR_RADDR_COUNT(); \ 171 } \ 172 } \ 173 } 174 175 #define sctp_sbfree(ctl, stcb, sb, m) { \ 176 SCTP_SAVE_ATOMIC_DECREMENT(&(sb)->sb_cc, SCTP_BUF_LEN((m))); \ 177 SCTP_SAVE_ATOMIC_DECREMENT(&(sb)->sb_mbcnt, MSIZE); \ 178 if (((ctl)->do_not_ref_stcb == 0) && stcb) {\ 179 SCTP_SAVE_ATOMIC_DECREMENT(&(stcb)->asoc.sb_cc, SCTP_BUF_LEN((m))); \ 180 SCTP_SAVE_ATOMIC_DECREMENT(&(stcb)->asoc.my_rwnd_control_len, MSIZE); \ 181 } \ 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))); \ 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 (stcb) { \ 191 atomic_add_int(&(stcb)->asoc.sb_cc,SCTP_BUF_LEN((m))); \ 192 atomic_add_int(&(stcb)->asoc.my_rwnd_control_len, MSIZE); \ 193 } \ 194 if (SCTP_BUF_TYPE(m) != MT_DATA && SCTP_BUF_TYPE(m) != MT_HEADER && \ 195 SCTP_BUF_TYPE(m) != MT_OOBDATA) \ 196 atomic_add_int(&(sb)->sb_ctl,SCTP_BUF_LEN((m))); \ 197 } 198 199 200 #define sctp_ucount_incr(val) { \ 201 val++; \ 202 } 203 204 #define sctp_ucount_decr(val) { \ 205 if (val > 0) { \ 206 val--; \ 207 } else { \ 208 val = 0; \ 209 } \ 210 } 211 212 #define sctp_mbuf_crush(data) do { \ 213 struct mbuf *_m; \ 214 _m = (data); \ 215 while(_m && (SCTP_BUF_LEN(_m) == 0)) { \ 216 (data) = SCTP_BUF_NEXT(_m); \ 217 SCTP_BUF_NEXT(_m) = NULL; \ 218 sctp_m_free(_m); \ 219 _m = (data); \ 220 } \ 221 } while (0) 222 223 #define sctp_flight_size_decrease(tp1) do { \ 224 if (tp1->whoTo->flight_size >= tp1->book_size) \ 225 tp1->whoTo->flight_size -= tp1->book_size; \ 226 else \ 227 tp1->whoTo->flight_size = 0; \ 228 } while (0) 229 230 #define sctp_flight_size_increase(tp1) do { \ 231 (tp1)->whoTo->flight_size += (tp1)->book_size; \ 232 } while (0) 233 234 #ifdef SCTP_FS_SPEC_LOG 235 #define sctp_total_flight_decrease(stcb, tp1) do { \ 236 if (stcb->asoc.fs_index > SCTP_FS_SPEC_LOG_SIZE) \ 237 stcb->asoc.fs_index = 0;\ 238 stcb->asoc.fslog[stcb->asoc.fs_index].total_flight = stcb->asoc.total_flight; \ 239 stcb->asoc.fslog[stcb->asoc.fs_index].tsn = tp1->rec.data.TSN_seq; \ 240 stcb->asoc.fslog[stcb->asoc.fs_index].book = tp1->book_size; \ 241 stcb->asoc.fslog[stcb->asoc.fs_index].sent = tp1->sent; \ 242 stcb->asoc.fslog[stcb->asoc.fs_index].incr = 0; \ 243 stcb->asoc.fslog[stcb->asoc.fs_index].decr = 1; \ 244 stcb->asoc.fs_index++; \ 245 tp1->window_probe = 0; \ 246 if (stcb->asoc.total_flight >= tp1->book_size) { \ 247 stcb->asoc.total_flight -= tp1->book_size; \ 248 if (stcb->asoc.total_flight_count > 0) \ 249 stcb->asoc.total_flight_count--; \ 250 } else { \ 251 stcb->asoc.total_flight = 0; \ 252 stcb->asoc.total_flight_count = 0; \ 253 } \ 254 } while (0) 255 256 #define sctp_total_flight_increase(stcb, tp1) do { \ 257 if (stcb->asoc.fs_index > SCTP_FS_SPEC_LOG_SIZE) \ 258 stcb->asoc.fs_index = 0;\ 259 stcb->asoc.fslog[stcb->asoc.fs_index].total_flight = stcb->asoc.total_flight; \ 260 stcb->asoc.fslog[stcb->asoc.fs_index].tsn = tp1->rec.data.TSN_seq; \ 261 stcb->asoc.fslog[stcb->asoc.fs_index].book = tp1->book_size; \ 262 stcb->asoc.fslog[stcb->asoc.fs_index].sent = tp1->sent; \ 263 stcb->asoc.fslog[stcb->asoc.fs_index].incr = 1; \ 264 stcb->asoc.fslog[stcb->asoc.fs_index].decr = 0; \ 265 stcb->asoc.fs_index++; \ 266 (stcb)->asoc.total_flight_count++; \ 267 (stcb)->asoc.total_flight += (tp1)->book_size; \ 268 } while (0) 269 270 #else 271 272 #define sctp_total_flight_decrease(stcb, tp1) do { \ 273 tp1->window_probe = 0; \ 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--; \ 278 } else { \ 279 stcb->asoc.total_flight = 0; \ 280 stcb->asoc.total_flight_count = 0; \ 281 } \ 282 } while (0) 283 284 #define sctp_total_flight_increase(stcb, tp1) do { \ 285 (stcb)->asoc.total_flight_count++; \ 286 (stcb)->asoc.total_flight += (tp1)->book_size; \ 287 } while (0) 288 289 #endif 290 291 292 struct sctp_nets; 293 struct sctp_inpcb; 294 struct sctp_tcb; 295 struct sctphdr; 296 297 298 void sctp_close(struct socket *so); 299 int sctp_disconnect(struct socket *so); 300 301 void sctp_ctlinput __P((int, struct sockaddr *, void *)); 302 int sctp_ctloutput __P((struct socket *, struct sockopt *)); 303 304 #ifdef INET 305 void sctp_input_with_port __P((struct mbuf *, int, uint16_t)); 306 307 #endif 308 #ifdef INET 309 void sctp_input __P((struct mbuf *, int)); 310 311 #endif 312 void sctp_pathmtu_adjustment __P((struct sctp_inpcb *, struct sctp_tcb *, struct sctp_nets *, uint16_t)); 313 void sctp_drain __P((void)); 314 void sctp_init __P((void)); 315 316 void sctp_finish(void); 317 318 int sctp_flush(struct socket *, int); 319 int sctp_shutdown __P((struct socket *)); 320 void sctp_notify 321 __P((struct sctp_inpcb *, struct ip *ip, struct sctphdr *, 322 struct sockaddr *, struct sctp_tcb *, 323 struct sctp_nets *)); 324 325 int sctp_bindx(struct socket *, int, struct sockaddr_storage *, 326 int, int, struct proc *); 327 328 /* can't use sctp_assoc_t here */ 329 int sctp_peeloff(struct socket *, struct socket *, int, caddr_t, int *); 330 331 int sctp_ingetaddr(struct socket *, 332 struct sockaddr ** 333 ); 334 335 int sctp_peeraddr(struct socket *, 336 struct sockaddr ** 337 ); 338 339 int sctp_listen(struct socket *, int, struct thread *); 340 341 int sctp_accept(struct socket *, struct sockaddr **); 342 343 #endif /* _KERNEL */ 344 345 #endif /* !_NETINET_SCTP_VAR_H_ */ 346