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 32 /* $KAME: sctputil.h,v 1.15 2005/03/06 16:04:19 itojun Exp $ */ 33 34 #include <sys/cdefs.h> 35 __FBSDID("$FreeBSD$"); 36 #ifndef __sctputil_h__ 37 #define __sctputil_h__ 38 39 40 #if defined(_KERNEL) || defined(__Userspace__) 41 42 #define SCTP_READ_LOCK_HELD 1 43 #define SCTP_READ_LOCK_NOT_HELD 0 44 45 #ifdef SCTP_ASOCLOG_OF_TSNS 46 void sctp_print_out_track_log(struct sctp_tcb *stcb); 47 48 #endif 49 50 #ifdef SCTP_MBUF_LOGGING 51 struct mbuf *sctp_m_free(struct mbuf *m); 52 void sctp_m_freem(struct mbuf *m); 53 54 #else 55 #define sctp_m_free m_free 56 #define sctp_m_freem m_freem 57 #endif 58 59 #if defined(SCTP_LOCAL_TRACE_BUF) || defined(__APPLE__) 60 void 61 sctp_log_trace(uint32_t fr, const char *str SCTP_UNUSED, uint32_t a, uint32_t b, uint32_t c, uint32_t d, uint32_t e, uint32_t f); 62 63 #endif 64 65 #define sctp_get_associd(stcb) ((sctp_assoc_t)stcb->asoc.assoc_id) 66 67 68 /* 69 * Function prototypes 70 */ 71 uint32_t 72 sctp_get_ifa_hash_val(struct sockaddr *addr); 73 74 struct sctp_ifa * 75 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr, int hold_lock); 76 77 struct sctp_ifa * 78 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock); 79 80 uint32_t sctp_select_initial_TSN(struct sctp_pcb *); 81 82 uint32_t sctp_select_a_tag(struct sctp_inpcb *, uint16_t lport, uint16_t rport, int); 83 84 int sctp_init_asoc(struct sctp_inpcb *, struct sctp_tcb *, int, uint32_t, uint32_t); 85 86 void sctp_fill_random_store(struct sctp_pcb *); 87 88 void 89 sctp_timer_start(int, struct sctp_inpcb *, struct sctp_tcb *, 90 struct sctp_nets *); 91 92 void 93 sctp_timer_stop(int, struct sctp_inpcb *, struct sctp_tcb *, 94 struct sctp_nets *, uint32_t); 95 96 int 97 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id); 98 99 void 100 sctp_mtu_size_reset(struct sctp_inpcb *, struct sctp_association *, uint32_t); 101 102 void 103 sctp_add_to_readq(struct sctp_inpcb *inp, 104 struct sctp_tcb *stcb, 105 struct sctp_queued_to_read *control, 106 struct sockbuf *sb, 107 int end, 108 int inpread_locked, 109 int so_locked 110 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 111 SCTP_UNUSED 112 #endif 113 ); 114 115 int 116 sctp_append_to_readq(struct sctp_inpcb *inp, 117 struct sctp_tcb *stcb, 118 struct sctp_queued_to_read *control, 119 struct mbuf *m, 120 int end, 121 int new_cumack, 122 struct sockbuf *sb); 123 124 125 void sctp_iterator_worker(void); 126 127 int find_next_best_mtu(int); 128 129 void 130 sctp_timeout_handler(void *); 131 132 uint32_t 133 sctp_calculate_rto(struct sctp_tcb *, struct sctp_association *, 134 struct sctp_nets *, struct timeval *, int); 135 136 uint32_t sctp_calculate_len(struct mbuf *); 137 138 caddr_t sctp_m_getptr(struct mbuf *, int, int, uint8_t *); 139 140 struct sctp_paramhdr * 141 sctp_get_next_param(struct mbuf *, int, 142 struct sctp_paramhdr *, int); 143 144 int sctp_add_pad_tombuf(struct mbuf *, int); 145 146 int sctp_pad_lastmbuf(struct mbuf *, int, struct mbuf *); 147 148 void 149 sctp_ulp_notify(uint32_t, struct sctp_tcb *, uint32_t, void *, int 150 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 151 SCTP_UNUSED 152 #endif 153 ); 154 155 void 156 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp, 157 struct sctp_inpcb *new_inp, 158 struct sctp_tcb *stcb, int waitflags); 159 160 161 void sctp_stop_timers_for_shutdown(struct sctp_tcb *); 162 163 void 164 sctp_report_all_outbound(struct sctp_tcb *, int, int 165 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 166 SCTP_UNUSED 167 #endif 168 ); 169 170 int sctp_expand_mapping_array(struct sctp_association *, uint32_t); 171 172 /* EY nr_sack version of the above method, expands nr_mapping_array */ 173 int sctp_expand_nr_mapping_array(struct sctp_association *, uint32_t); 174 void 175 sctp_abort_notification(struct sctp_tcb *, int, int 176 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 177 SCTP_UNUSED 178 #endif 179 ); 180 181 /* We abort responding to an IP packet for some reason */ 182 void 183 sctp_abort_association(struct sctp_inpcb *, struct sctp_tcb *, 184 struct mbuf *, int, struct sctphdr *, struct mbuf *, uint32_t, uint16_t); 185 186 187 /* We choose to abort via user input */ 188 void 189 sctp_abort_an_association(struct sctp_inpcb *, struct sctp_tcb *, int, 190 struct mbuf *, int 191 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 192 SCTP_UNUSED 193 #endif 194 ); 195 196 void 197 sctp_handle_ootb(struct mbuf *, int, int, struct sctphdr *, 198 struct sctp_inpcb *, struct mbuf *, uint32_t, uint16_t); 199 200 int 201 sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr, 202 int totaddr, int *error); 203 204 struct sctp_tcb * 205 sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr, 206 int *totaddr, int *num_v4, int *num_v6, int *error, int limit, int *bad_addr); 207 208 int sctp_is_there_an_abort_here(struct mbuf *, int, uint32_t *); 209 210 #ifdef INET6 211 uint32_t sctp_is_same_scope(struct sockaddr_in6 *, struct sockaddr_in6 *); 212 213 struct sockaddr_in6 * 214 sctp_recover_scope(struct sockaddr_in6 *, struct sockaddr_in6 *); 215 216 #define sctp_recover_scope_mac(addr, store) do { \ 217 if ((addr->sin6_family == AF_INET6) && \ 218 (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr))) { \ 219 *store = *addr; \ 220 if (addr->sin6_scope_id == 0) { \ 221 if (!sa6_recoverscope(store)) { \ 222 addr = store; \ 223 } \ 224 } else { \ 225 in6_clearscope(&addr->sin6_addr); \ 226 addr = store; \ 227 } \ 228 } \ 229 } while (0) 230 #endif 231 232 int sctp_cmpaddr(struct sockaddr *, struct sockaddr *); 233 234 void sctp_print_address(struct sockaddr *); 235 void sctp_print_address_pkt(struct ip *, struct sctphdr *); 236 237 int 238 sctp_release_pr_sctp_chunk(struct sctp_tcb *, struct sctp_tmit_chunk *, 239 int, int 240 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) 241 SCTP_UNUSED 242 #endif 243 ); 244 245 struct mbuf *sctp_generate_invmanparam(int); 246 247 void 248 sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp, 249 struct sockaddr *sa, sctp_assoc_t assoc_id, 250 uint32_t vrf_id, int *error, void *p); 251 void 252 sctp_bindx_delete_address(struct socket *so, struct sctp_inpcb *inp, 253 struct sockaddr *sa, sctp_assoc_t assoc_id, 254 uint32_t vrf_id, int *error); 255 256 int sctp_local_addr_count(struct sctp_tcb *stcb); 257 258 #ifdef SCTP_MBCNT_LOGGING 259 void 260 sctp_free_bufspace(struct sctp_tcb *, struct sctp_association *, 261 struct sctp_tmit_chunk *, int); 262 263 #else 264 #define sctp_free_bufspace(stcb, asoc, tp1, chk_cnt) \ 265 do { \ 266 if (tp1->data != NULL) { \ 267 atomic_subtract_int(&((asoc)->chunks_on_out_queue), chk_cnt); \ 268 if ((asoc)->total_output_queue_size >= tp1->book_size) { \ 269 atomic_subtract_int(&((asoc)->total_output_queue_size), tp1->book_size); \ 270 } else { \ 271 (asoc)->total_output_queue_size = 0; \ 272 } \ 273 if (stcb->sctp_socket && ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \ 274 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \ 275 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) { \ 276 atomic_subtract_int(&((stcb)->sctp_socket->so_snd.sb_cc), tp1->book_size); \ 277 } else { \ 278 stcb->sctp_socket->so_snd.sb_cc = 0; \ 279 } \ 280 } \ 281 } \ 282 } while (0) 283 284 #endif 285 286 #define sctp_free_spbufspace(stcb, asoc, sp) \ 287 do { \ 288 if (sp->data != NULL) { \ 289 if ((asoc)->total_output_queue_size >= sp->length) { \ 290 atomic_subtract_int(&(asoc)->total_output_queue_size, sp->length); \ 291 } else { \ 292 (asoc)->total_output_queue_size = 0; \ 293 } \ 294 if (stcb->sctp_socket && ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \ 295 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \ 296 if (stcb->sctp_socket->so_snd.sb_cc >= sp->length) { \ 297 atomic_subtract_int(&stcb->sctp_socket->so_snd.sb_cc,sp->length); \ 298 } else { \ 299 stcb->sctp_socket->so_snd.sb_cc = 0; \ 300 } \ 301 } \ 302 } \ 303 } while (0) 304 305 #define sctp_snd_sb_alloc(stcb, sz) \ 306 do { \ 307 atomic_add_int(&stcb->asoc.total_output_queue_size,sz); \ 308 if ((stcb->sctp_socket != NULL) && \ 309 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \ 310 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \ 311 atomic_add_int(&stcb->sctp_socket->so_snd.sb_cc,sz); \ 312 } \ 313 } while (0) 314 315 /* new functions to start/stop udp tunneling */ 316 void sctp_over_udp_stop(void); 317 int sctp_over_udp_start(void); 318 319 int 320 sctp_soreceive(struct socket *so, struct sockaddr **psa, 321 struct uio *uio, 322 struct mbuf **mp0, 323 struct mbuf **controlp, 324 int *flagsp); 325 326 327 /* For those not passing mbufs, this does the 328 * translations for you. Caller owns memory 329 * of size controllen returned in controlp. 330 */ 331 int 332 sctp_l_soreceive(struct socket *so, 333 struct sockaddr **name, 334 struct uio *uio, 335 char **controlp, 336 int *controllen, 337 int *flag); 338 339 340 void 341 sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d); 342 343 void 344 sctp_wakeup_log(struct sctp_tcb *stcb, 345 uint32_t cumtsn, 346 uint32_t wake_cnt, int from); 347 348 void sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t, uint16_t, uint16_t, int); 349 350 void sctp_log_nagle_event(struct sctp_tcb *stcb, int action); 351 352 353 void 354 sctp_log_mb(struct mbuf *m, int from); 355 356 void 357 sctp_sblog(struct sockbuf *sb, 358 struct sctp_tcb *stcb, int from, int incr); 359 360 void 361 sctp_log_strm_del(struct sctp_queued_to_read *control, 362 struct sctp_queued_to_read *poschk, 363 int from); 364 void sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *, int, uint8_t); 365 void rto_logging(struct sctp_nets *net, int from); 366 367 void sctp_log_closing(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int16_t loc); 368 369 void sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from); 370 void sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *, int, int, uint8_t); 371 void sctp_log_block(uint8_t, struct socket *, struct sctp_association *, int); 372 void sctp_log_rwnd(uint8_t, uint32_t, uint32_t, uint32_t); 373 void sctp_log_mbcnt(uint8_t, uint32_t, uint32_t, uint32_t, uint32_t); 374 void sctp_log_rwnd_set(uint8_t, uint32_t, uint32_t, uint32_t, uint32_t); 375 int sctp_fill_stat_log(void *, size_t *); 376 void sctp_log_fr(uint32_t, uint32_t, uint32_t, int); 377 void sctp_log_sack(uint32_t, uint32_t, uint32_t, uint16_t, uint16_t, int); 378 void sctp_log_map(uint32_t, uint32_t, uint32_t, int); 379 380 void sctp_clr_stat_log(void); 381 382 383 #ifdef SCTP_AUDITING_ENABLED 384 void 385 sctp_auditing(int, struct sctp_inpcb *, struct sctp_tcb *, 386 struct sctp_nets *); 387 void sctp_audit_log(uint8_t, uint8_t); 388 389 #endif 390 391 392 #endif /* _KERNEL */ 393 #endif 394