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) 41 42 43 #ifdef SCTP_ASOCLOG_OF_TSNS 44 void sctp_print_out_track_log(struct sctp_tcb *stcb); 45 46 #endif 47 48 #ifdef SCTP_MBUF_LOGGING 49 struct mbuf *sctp_m_free(struct mbuf *m); 50 void sctp_m_freem(struct mbuf *m); 51 52 #else 53 #define sctp_m_free m_free 54 #define sctp_m_freem m_freem 55 #endif 56 57 58 #define sctp_get_associd(stcb) ((sctp_assoc_t)stcb->asoc.assoc_id) 59 60 61 /* 62 * Function prototypes 63 */ 64 uint32_t 65 sctp_get_ifa_hash_val(struct sockaddr *addr); 66 67 struct sctp_ifa * 68 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr, int hold_lock); 69 70 struct sctp_ifa * 71 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock); 72 73 uint32_t sctp_select_initial_TSN(struct sctp_pcb *); 74 75 uint32_t sctp_select_a_tag(struct sctp_inpcb *); 76 77 int sctp_init_asoc(struct sctp_inpcb *, struct sctp_tcb *, int, uint32_t, uint32_t); 78 79 void sctp_fill_random_store(struct sctp_pcb *); 80 81 void 82 sctp_timer_start(int, struct sctp_inpcb *, struct sctp_tcb *, 83 struct sctp_nets *); 84 85 void 86 sctp_timer_stop(int, struct sctp_inpcb *, struct sctp_tcb *, 87 struct sctp_nets *, uint32_t); 88 89 int 90 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id); 91 92 uint32_t sctp_calculate_sum(struct mbuf *, int32_t *, uint32_t); 93 94 void 95 sctp_mtu_size_reset(struct sctp_inpcb *, struct sctp_association *, uint32_t); 96 97 void 98 sctp_add_to_readq(struct sctp_inpcb *inp, 99 struct sctp_tcb *stcb, 100 struct sctp_queued_to_read *control, 101 struct sockbuf *sb, 102 int end); 103 104 int 105 sctp_append_to_readq(struct sctp_inpcb *inp, 106 struct sctp_tcb *stcb, 107 struct sctp_queued_to_read *control, 108 struct mbuf *m, 109 int end, 110 int new_cumack, 111 struct sockbuf *sb); 112 113 114 void sctp_iterator_worker(void); 115 116 int find_next_best_mtu(int); 117 118 void 119 sctp_timeout_handler(void *); 120 121 uint32_t 122 sctp_calculate_rto(struct sctp_tcb *, struct sctp_association *, 123 struct sctp_nets *, struct timeval *, int); 124 125 uint32_t sctp_calculate_len(struct mbuf *); 126 127 caddr_t sctp_m_getptr(struct mbuf *, int, int, uint8_t *); 128 129 struct sctp_paramhdr * 130 sctp_get_next_param(struct mbuf *, int, 131 struct sctp_paramhdr *, int); 132 133 int sctp_add_pad_tombuf(struct mbuf *, int); 134 135 int sctp_pad_lastmbuf(struct mbuf *, int, struct mbuf *); 136 137 void sctp_ulp_notify(uint32_t, struct sctp_tcb *, uint32_t, void *); 138 139 void 140 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp, 141 struct sctp_inpcb *new_inp, 142 struct sctp_tcb *stcb, int waitflags); 143 144 145 void sctp_stop_timers_for_shutdown(struct sctp_tcb *); 146 147 void sctp_report_all_outbound(struct sctp_tcb *, int); 148 149 int sctp_expand_mapping_array(struct sctp_association *, uint32_t); 150 151 void sctp_abort_notification(struct sctp_tcb *, int); 152 153 /* We abort responding to an IP packet for some reason */ 154 void 155 sctp_abort_association(struct sctp_inpcb *, struct sctp_tcb *, 156 struct mbuf *, int, struct sctphdr *, struct mbuf *, uint32_t); 157 158 159 /* We choose to abort via user input */ 160 void 161 sctp_abort_an_association(struct sctp_inpcb *, struct sctp_tcb *, int, 162 struct mbuf *); 163 164 void 165 sctp_handle_ootb(struct mbuf *, int, int, struct sctphdr *, 166 struct sctp_inpcb *, struct mbuf *, uint32_t); 167 168 int 169 sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr, 170 int totaddr, int *error); 171 172 struct sctp_tcb * 173 sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr, 174 int *totaddr, int *num_v4, int *num_v6, int *error, int limit, int *bad_addr); 175 176 int sctp_is_there_an_abort_here(struct mbuf *, int, uint32_t *); 177 uint32_t sctp_is_same_scope(struct sockaddr_in6 *, struct sockaddr_in6 *); 178 179 struct sockaddr_in6 * 180 sctp_recover_scope(struct sockaddr_in6 *, struct sockaddr_in6 *); 181 182 #define sctp_recover_scope_mac(addr, store) do { \ 183 if ((addr->sin6_family == AF_INET6) && \ 184 (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr))) { \ 185 *store = *addr; \ 186 if (addr->sin6_scope_id == 0) { \ 187 if (!sa6_recoverscope(store)) { \ 188 addr = store; \ 189 } \ 190 } else { \ 191 in6_clearscope(&addr->sin6_addr); \ 192 addr = store; \ 193 } \ 194 } \ 195 } while (0) 196 197 198 int sctp_cmpaddr(struct sockaddr *, struct sockaddr *); 199 200 void sctp_print_address(struct sockaddr *); 201 void sctp_print_address_pkt(struct ip *, struct sctphdr *); 202 203 void 204 sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, 205 uint32_t error, int no_lock, uint32_t strseq); 206 207 int 208 sctp_release_pr_sctp_chunk(struct sctp_tcb *, struct sctp_tmit_chunk *, 209 int, struct sctpchunk_listhead *); 210 211 struct mbuf *sctp_generate_invmanparam(int); 212 213 void 214 sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp, 215 struct sockaddr *sa, sctp_assoc_t assoc_id, 216 uint32_t vrf_id, int *error, void *p); 217 void 218 sctp_bindx_delete_address(struct socket *so, struct sctp_inpcb *inp, 219 struct sockaddr *sa, sctp_assoc_t assoc_id, 220 uint32_t vrf_id, int *error); 221 222 #ifdef SCTP_MBCNT_LOGGING 223 void 224 sctp_free_bufspace(struct sctp_tcb *, struct sctp_association *, 225 struct sctp_tmit_chunk *, int); 226 227 #else 228 #define sctp_free_bufspace(stcb, asoc, tp1, chk_cnt) \ 229 do { \ 230 if (tp1->data != NULL) { \ 231 atomic_subtract_int(&((asoc)->chunks_on_out_queue), chk_cnt); \ 232 if ((asoc)->total_output_queue_size >= tp1->book_size) { \ 233 atomic_subtract_int(&((asoc)->total_output_queue_size), tp1->book_size); \ 234 } else { \ 235 (asoc)->total_output_queue_size = 0; \ 236 } \ 237 if (stcb->sctp_socket && ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \ 238 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \ 239 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) { \ 240 atomic_subtract_int(&((stcb)->sctp_socket->so_snd.sb_cc), tp1->book_size); \ 241 } else { \ 242 stcb->sctp_socket->so_snd.sb_cc = 0; \ 243 } \ 244 } \ 245 } \ 246 } while (0) 247 248 #endif 249 250 #define sctp_free_spbufspace(stcb, asoc, sp) \ 251 do { \ 252 if (sp->data != NULL) { \ 253 atomic_subtract_int(&(asoc)->chunks_on_out_queue, 1); \ 254 if ((asoc)->total_output_queue_size >= sp->length) { \ 255 atomic_subtract_int(&(asoc)->total_output_queue_size, sp->length); \ 256 } else { \ 257 (asoc)->total_output_queue_size = 0; \ 258 } \ 259 if (stcb->sctp_socket && ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \ 260 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \ 261 if (stcb->sctp_socket->so_snd.sb_cc >= sp->length) { \ 262 atomic_subtract_int(&stcb->sctp_socket->so_snd.sb_cc,sp->length); \ 263 } else { \ 264 stcb->sctp_socket->so_snd.sb_cc = 0; \ 265 } \ 266 } \ 267 } \ 268 } while (0) 269 270 #define sctp_snd_sb_alloc(stcb, sz) \ 271 do { \ 272 atomic_add_int(&stcb->asoc.total_output_queue_size,sz); \ 273 if ((stcb->sctp_socket != NULL) && \ 274 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \ 275 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \ 276 atomic_add_int(&stcb->sctp_socket->so_snd.sb_cc,sz); \ 277 } \ 278 } while (0) 279 280 281 int 282 sctp_soreceive(struct socket *so, struct sockaddr **psa, 283 struct uio *uio, 284 struct mbuf **mp0, 285 struct mbuf **controlp, 286 int *flagsp); 287 288 289 /* For those not passing mbufs, this does the 290 * translations for you. Caller owns memory 291 * of size controllen returned in controlp. 292 */ 293 int 294 sctp_l_soreceive(struct socket *so, 295 struct sockaddr **name, 296 struct uio *uio, 297 char **controlp, 298 int *controllen, 299 int *flag); 300 301 302 void 303 sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d); 304 305 void 306 sctp_wakeup_log(struct sctp_tcb *stcb, 307 uint32_t cumtsn, 308 uint32_t wake_cnt, int from); 309 310 void sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t, uint16_t, uint16_t, int); 311 312 void sctp_log_nagle_event(struct sctp_tcb *stcb, int action); 313 314 315 void 316 sctp_log_mb(struct mbuf *m, int from); 317 318 void 319 sctp_sblog(struct sockbuf *sb, 320 struct sctp_tcb *stcb, int from, int incr); 321 322 void 323 sctp_log_strm_del(struct sctp_queued_to_read *control, 324 struct sctp_queued_to_read *poschk, 325 int from); 326 void sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *, int, uint8_t); 327 void rto_logging(struct sctp_nets *net, int from); 328 329 void sctp_log_closing(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int16_t loc); 330 331 void sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from); 332 void sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *, int, int, uint8_t); 333 void sctp_log_block(uint8_t, struct socket *, struct sctp_association *, int); 334 void sctp_log_rwnd(uint8_t, uint32_t, uint32_t, uint32_t); 335 void sctp_log_mbcnt(uint8_t, uint32_t, uint32_t, uint32_t, uint32_t); 336 void sctp_log_rwnd_set(uint8_t, uint32_t, uint32_t, uint32_t, uint32_t); 337 int sctp_fill_stat_log(void *, size_t *); 338 void sctp_log_fr(uint32_t, uint32_t, uint32_t, int); 339 void sctp_log_sack(uint32_t, uint32_t, uint32_t, uint16_t, uint16_t, int); 340 void sctp_log_map(uint32_t, uint32_t, uint32_t, int); 341 342 void sctp_clr_stat_log(void); 343 344 345 #ifdef SCTP_AUDITING_ENABLED 346 void 347 sctp_auditing(int, struct sctp_inpcb *, struct sctp_tcb *, 348 struct sctp_nets *); 349 void sctp_audit_log(uint8_t, uint8_t); 350 351 #endif 352 353 354 #endif /* _KERNEL */ 355 #endif 356