1 /*- 2 * Copyright (c) 2001-2008, 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) || defined(__Userspace__) 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) == feature) 49 #define sctp_is_feature_off(inp, feature) ((inp->sctp_features & feature) == 0) 50 51 52 /* managing mobility_feature in inpcb (by micchie) */ 53 #define sctp_mobility_feature_on(inp, feature) (inp->sctp_mobility_features |= feature) 54 #define sctp_mobility_feature_off(inp, feature) (inp->sctp_mobility_features &= ~feature) 55 #define sctp_is_mobility_feature_on(inp, feature) (inp->sctp_mobility_features & feature) 56 #define sctp_is_mobility_feature_off(inp, feature) ((inp->sctp_mobility_features & feature) == 0) 57 58 #define sctp_maxspace(sb) (max((sb)->sb_hiwat,SCTP_MINIMAL_RWND)) 59 60 #define sctp_sbspace(asoc, sb) ((long) ((sctp_maxspace(sb) > (asoc)->sb_cc) ? (sctp_maxspace(sb) - (asoc)->sb_cc) : 0)) 61 62 #define sctp_sbspace_failedmsgs(sb) ((long) ((sctp_maxspace(sb) > (sb)->sb_cc) ? (sctp_maxspace(sb) - (sb)->sb_cc) : 0)) 63 64 #define sctp_sbspace_sub(a,b) ((a > b) ? (a - b) : 0) 65 66 /* 67 * I tried to cache the readq entries at one point. But the reality 68 * is that it did not add any performance since this meant we had to 69 * lock the STCB on read. And at that point once you have to do an 70 * extra lock, it really does not matter if the lock is in the ZONE 71 * stuff or in our code. Note that this same problem would occur with 72 * an mbuf cache as well so it is not really worth doing, at least 73 * right now :-D 74 */ 75 76 #define sctp_free_a_readq(_stcb, _readq) { \ 77 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), (_readq)); \ 78 SCTP_DECR_READQ_COUNT(); \ 79 } 80 81 #define sctp_alloc_a_readq(_stcb, _readq) { \ 82 (_readq) = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_readq), struct sctp_queued_to_read); \ 83 if ((_readq)) { \ 84 SCTP_INCR_READQ_COUNT(); \ 85 } \ 86 } 87 88 #define sctp_free_a_strmoq(_stcb, _strmoq) { \ 89 if ((_strmoq)->holds_key_ref) { \ 90 sctp_auth_key_release(stcb, sp->auth_keyid); \ 91 (_strmoq)->holds_key_ref = 0; \ 92 } \ 93 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_strmoq), (_strmoq)); \ 94 SCTP_DECR_STRMOQ_COUNT(); \ 95 } 96 97 #define sctp_alloc_a_strmoq(_stcb, _strmoq) { \ 98 (_strmoq) = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_strmoq), struct sctp_stream_queue_pending); \ 99 if ((_strmoq)) { \ 100 memset(_strmoq, 0, sizeof(struct sctp_stream_queue_pending)); \ 101 SCTP_INCR_STRMOQ_COUNT(); \ 102 (_strmoq)->holds_key_ref = 0; \ 103 } \ 104 } 105 106 #define sctp_free_a_chunk(_stcb, _chk) { \ 107 if ((_chk)->holds_key_ref) {\ 108 sctp_auth_key_release((_stcb), (_chk)->auth_keyid); \ 109 (_chk)->holds_key_ref = 0; \ 110 } \ 111 if (_stcb) { \ 112 SCTP_TCB_LOCK_ASSERT((_stcb)); \ 113 if ((_chk)->whoTo) { \ 114 sctp_free_remote_addr((_chk)->whoTo); \ 115 (_chk)->whoTo = NULL; \ 116 } \ 117 if (((_stcb)->asoc.free_chunk_cnt > SCTP_BASE_SYSCTL(sctp_asoc_free_resc_limit)) || \ 118 (SCTP_BASE_INFO(ipi_free_chunks) > SCTP_BASE_SYSCTL(sctp_system_free_resc_limit))) { \ 119 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), (_chk)); \ 120 SCTP_DECR_CHK_COUNT(); \ 121 } else { \ 122 TAILQ_INSERT_TAIL(&(_stcb)->asoc.free_chunks, (_chk), sctp_next); \ 123 (_stcb)->asoc.free_chunk_cnt++; \ 124 atomic_add_int(&SCTP_BASE_INFO(ipi_free_chunks), 1); \ 125 } \ 126 } else { \ 127 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), (_chk)); \ 128 SCTP_DECR_CHK_COUNT(); \ 129 } \ 130 } 131 132 #define sctp_alloc_a_chunk(_stcb, _chk) { \ 133 if (TAILQ_EMPTY(&(_stcb)->asoc.free_chunks)) { \ 134 (_chk) = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_chunk), struct sctp_tmit_chunk); \ 135 if ((_chk)) { \ 136 SCTP_INCR_CHK_COUNT(); \ 137 (_chk)->whoTo = NULL; \ 138 (_chk)->holds_key_ref = 0; \ 139 } \ 140 } else { \ 141 (_chk) = TAILQ_FIRST(&(_stcb)->asoc.free_chunks); \ 142 TAILQ_REMOVE(&(_stcb)->asoc.free_chunks, (_chk), sctp_next); \ 143 atomic_subtract_int(&SCTP_BASE_INFO(ipi_free_chunks), 1); \ 144 (_chk)->holds_key_ref = 0; \ 145 SCTP_STAT_INCR(sctps_cached_chk); \ 146 (_stcb)->asoc.free_chunk_cnt--; \ 147 } \ 148 } 149 150 151 #define sctp_free_remote_addr(__net) { \ 152 if ((__net)) { \ 153 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&(__net)->ref_count)) { \ 154 (void)SCTP_OS_TIMER_STOP(&(__net)->rxt_timer.timer); \ 155 (void)SCTP_OS_TIMER_STOP(&(__net)->pmtu_timer.timer); \ 156 (void)SCTP_OS_TIMER_STOP(&(__net)->fr_timer.timer); \ 157 if ((__net)->ro.ro_rt) { \ 158 RTFREE((__net)->ro.ro_rt); \ 159 (__net)->ro.ro_rt = NULL; \ 160 } \ 161 if ((__net)->src_addr_selected) { \ 162 sctp_free_ifa((__net)->ro._s_addr); \ 163 (__net)->ro._s_addr = NULL; \ 164 } \ 165 (__net)->src_addr_selected = 0; \ 166 (__net)->dest_state = SCTP_ADDR_NOT_REACHABLE; \ 167 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_net), (__net)); \ 168 SCTP_DECR_RADDR_COUNT(); \ 169 } \ 170 } \ 171 } 172 173 #define sctp_sbfree(ctl, stcb, sb, m) { \ 174 SCTP_SAVE_ATOMIC_DECREMENT(&(sb)->sb_cc, SCTP_BUF_LEN((m))); \ 175 SCTP_SAVE_ATOMIC_DECREMENT(&(sb)->sb_mbcnt, MSIZE); \ 176 if (((ctl)->do_not_ref_stcb == 0) && stcb) {\ 177 SCTP_SAVE_ATOMIC_DECREMENT(&(stcb)->asoc.sb_cc, SCTP_BUF_LEN((m))); \ 178 SCTP_SAVE_ATOMIC_DECREMENT(&(stcb)->asoc.my_rwnd_control_len, MSIZE); \ 179 } \ 180 if (SCTP_BUF_TYPE(m) != MT_DATA && SCTP_BUF_TYPE(m) != MT_HEADER && \ 181 SCTP_BUF_TYPE(m) != MT_OOBDATA) \ 182 atomic_subtract_int(&(sb)->sb_ctl,SCTP_BUF_LEN((m))); \ 183 } 184 185 #define sctp_sballoc(stcb, sb, m) { \ 186 atomic_add_int(&(sb)->sb_cc,SCTP_BUF_LEN((m))); \ 187 atomic_add_int(&(sb)->sb_mbcnt, MSIZE); \ 188 if (stcb) { \ 189 atomic_add_int(&(stcb)->asoc.sb_cc,SCTP_BUF_LEN((m))); \ 190 atomic_add_int(&(stcb)->asoc.my_rwnd_control_len, MSIZE); \ 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 #define sctp_flight_size_decrease(tp1) do { \ 222 if (tp1->whoTo->flight_size >= tp1->book_size) \ 223 tp1->whoTo->flight_size -= tp1->book_size; \ 224 else \ 225 tp1->whoTo->flight_size = 0; \ 226 } while (0) 227 228 #define sctp_flight_size_increase(tp1) do { \ 229 (tp1)->whoTo->flight_size += (tp1)->book_size; \ 230 } while (0) 231 232 #ifdef SCTP_FS_SPEC_LOG 233 #define sctp_total_flight_decrease(stcb, tp1) do { \ 234 if (stcb->asoc.fs_index > SCTP_FS_SPEC_LOG_SIZE) \ 235 stcb->asoc.fs_index = 0;\ 236 stcb->asoc.fslog[stcb->asoc.fs_index].total_flight = stcb->asoc.total_flight; \ 237 stcb->asoc.fslog[stcb->asoc.fs_index].tsn = tp1->rec.data.TSN_seq; \ 238 stcb->asoc.fslog[stcb->asoc.fs_index].book = tp1->book_size; \ 239 stcb->asoc.fslog[stcb->asoc.fs_index].sent = tp1->sent; \ 240 stcb->asoc.fslog[stcb->asoc.fs_index].incr = 0; \ 241 stcb->asoc.fslog[stcb->asoc.fs_index].decr = 1; \ 242 stcb->asoc.fs_index++; \ 243 tp1->window_probe = 0; \ 244 if (stcb->asoc.total_flight >= tp1->book_size) { \ 245 stcb->asoc.total_flight -= tp1->book_size; \ 246 if (stcb->asoc.total_flight_count > 0) \ 247 stcb->asoc.total_flight_count--; \ 248 } else { \ 249 stcb->asoc.total_flight = 0; \ 250 stcb->asoc.total_flight_count = 0; \ 251 } \ 252 } while (0) 253 254 #define sctp_total_flight_increase(stcb, tp1) do { \ 255 if (stcb->asoc.fs_index > SCTP_FS_SPEC_LOG_SIZE) \ 256 stcb->asoc.fs_index = 0;\ 257 stcb->asoc.fslog[stcb->asoc.fs_index].total_flight = stcb->asoc.total_flight; \ 258 stcb->asoc.fslog[stcb->asoc.fs_index].tsn = tp1->rec.data.TSN_seq; \ 259 stcb->asoc.fslog[stcb->asoc.fs_index].book = tp1->book_size; \ 260 stcb->asoc.fslog[stcb->asoc.fs_index].sent = tp1->sent; \ 261 stcb->asoc.fslog[stcb->asoc.fs_index].incr = 1; \ 262 stcb->asoc.fslog[stcb->asoc.fs_index].decr = 0; \ 263 stcb->asoc.fs_index++; \ 264 (stcb)->asoc.total_flight_count++; \ 265 (stcb)->asoc.total_flight += (tp1)->book_size; \ 266 } while (0) 267 268 #else 269 270 #define sctp_total_flight_decrease(stcb, tp1) do { \ 271 tp1->window_probe = 0; \ 272 if (stcb->asoc.total_flight >= tp1->book_size) { \ 273 stcb->asoc.total_flight -= tp1->book_size; \ 274 if (stcb->asoc.total_flight_count > 0) \ 275 stcb->asoc.total_flight_count--; \ 276 } else { \ 277 stcb->asoc.total_flight = 0; \ 278 stcb->asoc.total_flight_count = 0; \ 279 } \ 280 } while (0) 281 282 #define sctp_total_flight_increase(stcb, tp1) do { \ 283 (stcb)->asoc.total_flight_count++; \ 284 (stcb)->asoc.total_flight += (tp1)->book_size; \ 285 } while (0) 286 287 #endif 288 289 290 struct sctp_nets; 291 struct sctp_inpcb; 292 struct sctp_tcb; 293 struct sctphdr; 294 295 296 void sctp_close(struct socket *so); 297 int sctp_disconnect(struct socket *so); 298 299 void sctp_ctlinput __P((int, struct sockaddr *, void *)); 300 int sctp_ctloutput __P((struct socket *, struct sockopt *)); 301 void sctp_input_with_port __P((struct mbuf *, int, uint16_t)); 302 void sctp_input __P((struct mbuf *, int)); 303 void sctp_pathmtu_adjustment __P((struct sctp_inpcb *, struct sctp_tcb *, struct sctp_nets *, uint16_t)); 304 void sctp_drain __P((void)); 305 void sctp_init __P((void)); 306 307 void sctp_finish(void); 308 309 int sctp_flush(struct socket *, int); 310 int sctp_shutdown __P((struct socket *)); 311 void sctp_notify 312 __P((struct sctp_inpcb *, struct ip *ip, struct sctphdr *, 313 struct sockaddr *, struct sctp_tcb *, 314 struct sctp_nets *)); 315 316 int sctp_bindx(struct socket *, int, struct sockaddr_storage *, 317 int, int, struct proc *); 318 319 /* can't use sctp_assoc_t here */ 320 int sctp_peeloff(struct socket *, struct socket *, int, caddr_t, int *); 321 322 int sctp_ingetaddr(struct socket *, 323 struct sockaddr ** 324 ); 325 326 int sctp_peeraddr(struct socket *, 327 struct sockaddr ** 328 ); 329 330 int sctp_listen(struct socket *, int, struct thread *); 331 332 int sctp_accept(struct socket *, struct sockaddr **); 333 334 #endif /* _KERNEL */ 335 336 #endif /* !_NETINET_SCTP_VAR_H_ */ 337