sctputil.h revision 170744
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: head/sys/netinet/sctputil.h 170744 2007-06-14 22:59:04Z rrs $"); 36#ifndef __sctputil_h__ 37#define __sctputil_h__ 38 39 40#if defined(_KERNEL) 41 42 43#ifdef SCTP_ASOCLOG_OF_TSNS 44void sctp_print_out_track_log(struct sctp_tcb *stcb); 45 46#endif 47 48#ifdef SCTP_MBUF_LOGGING 49struct mbuf *sctp_m_free(struct mbuf *m); 50void 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 */ 64uint32_t 65sctp_get_ifa_hash_val(struct sockaddr *addr); 66 67struct sctp_ifa * 68 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr, int hold_lock); 69 70struct sctp_ifa * 71 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock); 72 73uint32_t sctp_select_initial_TSN(struct sctp_pcb *); 74 75uint32_t sctp_select_a_tag(struct sctp_inpcb *); 76 77int sctp_init_asoc(struct sctp_inpcb *, struct sctp_tcb *, int, uint32_t, uint32_t); 78 79void sctp_fill_random_store(struct sctp_pcb *); 80 81void 82sctp_timer_start(int, struct sctp_inpcb *, struct sctp_tcb *, 83 struct sctp_nets *); 84 85void 86sctp_timer_stop(int, struct sctp_inpcb *, struct sctp_tcb *, 87 struct sctp_nets *, uint32_t); 88 89int 90 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id); 91 92uint32_t sctp_calculate_sum(struct mbuf *, int32_t *, uint32_t); 93 94void 95 sctp_mtu_size_reset(struct sctp_inpcb *, struct sctp_association *, uint32_t); 96 97void 98sctp_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 104int 105sctp_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 114void sctp_iterator_worker(void); 115 116int find_next_best_mtu(int); 117 118void 119 sctp_timeout_handler(void *); 120 121uint32_t 122sctp_calculate_rto(struct sctp_tcb *, struct sctp_association *, 123 struct sctp_nets *, struct timeval *); 124 125uint32_t sctp_calculate_len(struct mbuf *); 126 127caddr_t sctp_m_getptr(struct mbuf *, int, int, uint8_t *); 128 129struct sctp_paramhdr * 130sctp_get_next_param(struct mbuf *, int, 131 struct sctp_paramhdr *, int); 132 133int sctp_add_pad_tombuf(struct mbuf *, int); 134 135int sctp_pad_lastmbuf(struct mbuf *, int, struct mbuf *); 136 137void sctp_ulp_notify(uint32_t, struct sctp_tcb *, uint32_t, void *); 138 139void 140sctp_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 145void sctp_stop_timers_for_shutdown(struct sctp_tcb *); 146 147void sctp_report_all_outbound(struct sctp_tcb *, int); 148 149int sctp_expand_mapping_array(struct sctp_association *, uint32_t); 150 151void sctp_abort_notification(struct sctp_tcb *, int); 152 153/* We abort responding to an IP packet for some reason */ 154void 155sctp_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 */ 160void 161sctp_abort_an_association(struct sctp_inpcb *, struct sctp_tcb *, int, 162 struct mbuf *); 163 164void 165sctp_handle_ootb(struct mbuf *, int, int, struct sctphdr *, 166 struct sctp_inpcb *, struct mbuf *, uint32_t); 167 168int 169sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr, 170 int totaddr, int *error); 171 172struct sctp_tcb * 173sctp_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 176int sctp_is_there_an_abort_here(struct mbuf *, int, uint32_t *); 177uint32_t sctp_is_same_scope(struct sockaddr_in6 *, struct sockaddr_in6 *); 178 179struct 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 198int sctp_cmpaddr(struct sockaddr *, struct sockaddr *); 199 200void sctp_print_address(struct sockaddr *); 201void sctp_print_address_pkt(struct ip *, struct sctphdr *); 202 203void 204sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, 205 uint32_t error, int no_lock, uint32_t strseq); 206 207int 208sctp_release_pr_sctp_chunk(struct sctp_tcb *, struct sctp_tmit_chunk *, 209 int, struct sctpchunk_listhead *); 210 211struct mbuf *sctp_generate_invmanparam(int); 212 213void 214sctp_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); 217void 218sctp_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 223void 224sctp_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) \ 229do { \ 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) \ 251do { \ 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) \ 271do { \ 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 281int 282sctp_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 */ 293int 294sctp_l_soreceive(struct socket *so, 295 struct sockaddr **name, 296 struct uio *uio, 297 char **controlp, 298 int *controllen, 299 int *flag); 300 301 302void 303 sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d); 304 305void 306sctp_wakeup_log(struct sctp_tcb *stcb, 307 uint32_t cumtsn, 308 uint32_t wake_cnt, int from); 309 310void sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t, uint16_t, uint16_t, int); 311 312void sctp_log_nagle_event(struct sctp_tcb *stcb, int action); 313 314 315void 316 sctp_log_mb(struct mbuf *m, int from); 317 318void 319sctp_sblog(struct sockbuf *sb, 320 struct sctp_tcb *stcb, int from, int incr); 321 322void 323sctp_log_strm_del(struct sctp_queued_to_read *control, 324 struct sctp_queued_to_read *poschk, 325 int from); 326void sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *, int, uint8_t); 327void rto_logging(struct sctp_nets *net, int from); 328 329void sctp_log_closing(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int16_t loc); 330 331void sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from); 332void sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *, int, int, uint8_t); 333void sctp_log_block(uint8_t, struct socket *, struct sctp_association *, int); 334void sctp_log_rwnd(uint8_t, uint32_t, uint32_t, uint32_t); 335void sctp_log_mbcnt(uint8_t, uint32_t, uint32_t, uint32_t, uint32_t); 336void sctp_log_rwnd_set(uint8_t, uint32_t, uint32_t, uint32_t, uint32_t); 337int sctp_fill_stat_log(void *, size_t *); 338void sctp_log_fr(uint32_t, uint32_t, uint32_t, int); 339void sctp_log_sack(uint32_t, uint32_t, uint32_t, uint16_t, uint16_t, int); 340void sctp_log_map(uint32_t, uint32_t, uint32_t, int); 341 342void sctp_clr_stat_log(void); 343 344 345#ifdef SCTP_AUDITING_ENABLED 346void 347sctp_auditing(int, struct sctp_inpcb *, struct sctp_tcb *, 348 struct sctp_nets *); 349void sctp_audit_log(uint8_t, uint8_t); 350 351#endif 352 353 354#endif /* _KERNEL */ 355#endif 356