sctputil.h revision 167598
1/*- 2 * Copyright (c) 2001-2007, 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 167598 2007-03-15 11:27:14Z rrs $"); 36#ifndef __sctputil_h__ 37#define __sctputil_h__ 38 39 40#if defined(_KERNEL) 41 42#ifdef SCTP_MBUF_LOGGING 43 44struct mbuf *sctp_m_free(struct mbuf *m); 45void sctp_m_freem(struct mbuf *m); 46 47#else 48#define sctp_m_free m_free 49#define sctp_m_freem m_freem 50#endif 51 52 53#define sctp_get_associd(stcb) ((sctp_assoc_t)stcb->asoc.assoc_id) 54 55 56/* 57 * Function prototypes 58 */ 59struct sctp_ifa * 60 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr, int hold_lock); 61struct sctp_ifa * 62sctp_find_ifa_in_ifn(struct sctp_ifn *sctp_ifnp, struct sockaddr *addr, 63 int holds_lock); 64 65struct sctp_ifa * 66 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock); 67 68uint32_t sctp_select_initial_TSN(struct sctp_pcb *); 69 70uint32_t sctp_select_a_tag(struct sctp_inpcb *); 71 72int sctp_init_asoc(struct sctp_inpcb *, struct sctp_association *, int, uint32_t, uint32_t); 73 74void sctp_fill_random_store(struct sctp_pcb *); 75 76int 77sctp_timer_start(int, struct sctp_inpcb *, struct sctp_tcb *, 78 struct sctp_nets *); 79 80int 81sctp_timer_stop(int, struct sctp_inpcb *, struct sctp_tcb *, 82 struct sctp_nets *, uint32_t); 83 84int 85 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id); 86 87uint32_t sctp_calculate_sum(struct mbuf *, int32_t *, uint32_t); 88 89void 90 sctp_mtu_size_reset(struct sctp_inpcb *, struct sctp_association *, uint32_t); 91 92void 93sctp_add_to_readq(struct sctp_inpcb *inp, 94 struct sctp_tcb *stcb, 95 struct sctp_queued_to_read *control, 96 struct sockbuf *sb, 97 int end); 98 99int 100sctp_append_to_readq(struct sctp_inpcb *inp, 101 struct sctp_tcb *stcb, 102 struct sctp_queued_to_read *control, 103 struct mbuf *m, 104 int end, 105 int new_cumack, 106 struct sockbuf *sb); 107 108 109void sctp_iterator_worker(void); 110 111int find_next_best_mtu(int); 112 113void 114 sctp_timeout_handler(void *); 115 116uint32_t 117sctp_calculate_rto(struct sctp_tcb *, struct sctp_association *, 118 struct sctp_nets *, struct timeval *); 119 120uint32_t sctp_calculate_len(struct mbuf *); 121 122caddr_t sctp_m_getptr(struct mbuf *, int, int, uint8_t *); 123 124struct sctp_paramhdr * 125sctp_get_next_param(struct mbuf *, int, 126 struct sctp_paramhdr *, int); 127 128int sctp_add_pad_tombuf(struct mbuf *, int); 129 130int sctp_pad_lastmbuf(struct mbuf *, int, struct mbuf *); 131 132void sctp_ulp_notify(uint32_t, struct sctp_tcb *, uint32_t, void *); 133 134void 135sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp, 136 struct sctp_inpcb *new_inp, 137 struct sctp_tcb *stcb); 138 139 140void sctp_stop_timers_for_shutdown(struct sctp_tcb *); 141 142void sctp_report_all_outbound(struct sctp_tcb *, int); 143 144int sctp_expand_mapping_array(struct sctp_association *); 145 146void sctp_abort_notification(struct sctp_tcb *, int); 147 148/* We abort responding to an IP packet for some reason */ 149void 150sctp_abort_association(struct sctp_inpcb *, struct sctp_tcb *, 151 struct mbuf *, int, struct sctphdr *, struct mbuf *); 152 153/* We choose to abort via user input */ 154void 155sctp_abort_an_association(struct sctp_inpcb *, struct sctp_tcb *, int, 156 struct mbuf *); 157 158void 159sctp_handle_ootb(struct mbuf *, int, int, struct sctphdr *, 160 struct sctp_inpcb *, struct mbuf *); 161 162int sctp_is_there_an_abort_here(struct mbuf *, int, uint32_t *); 163uint32_t sctp_is_same_scope(struct sockaddr_in6 *, struct sockaddr_in6 *); 164 165struct sockaddr_in6 * 166 sctp_recover_scope(struct sockaddr_in6 *, struct sockaddr_in6 *); 167 168#define sctp_recover_scope_mac(addr, store) do { \ 169 if ((addr->sin6_family == AF_INET6) && \ 170 (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr))) { \ 171 *store = *addr; \ 172 if (addr->sin6_scope_id == 0) { \ 173 if (!sa6_recoverscope(store)) { \ 174 addr = store; \ 175 } \ 176 } else { \ 177 in6_clearscope(&addr->sin6_addr); \ 178 addr = store; \ 179 } \ 180 } \ 181} while (0) 182 183 184int sctp_cmpaddr(struct sockaddr *, struct sockaddr *); 185 186void sctp_print_address(struct sockaddr *); 187void sctp_print_address_pkt(struct ip *, struct sctphdr *); 188 189void 190sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, 191 uint32_t error, int no_lock); 192 193int 194sctp_release_pr_sctp_chunk(struct sctp_tcb *, struct sctp_tmit_chunk *, 195 int, struct sctpchunk_listhead *); 196 197struct mbuf *sctp_generate_invmanparam(int); 198 199 200#ifdef SCTP_MBCNT_LOGGING 201void 202sctp_free_bufspace(struct sctp_tcb *, struct sctp_association *, 203 struct sctp_tmit_chunk *); 204 205#else 206#define sctp_free_bufspace(stcb, asoc, tp1, chk_cnt) \ 207do { \ 208 if (tp1->data != NULL) { \ 209 atomic_add_int(&((asoc)->chunks_on_out_queue), -chk_cnt); \ 210 if ((asoc)->total_output_queue_size >= tp1->book_size) { \ 211 atomic_add_int(&((asoc)->total_output_queue_size), -tp1->book_size); \ 212 } else { \ 213 (asoc)->total_output_queue_size = 0; \ 214 } \ 215 if (stcb->sctp_socket && ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \ 216 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \ 217 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) { \ 218 atomic_add_int(&((stcb)->sctp_socket->so_snd.sb_cc), -tp1->book_size); \ 219 } else { \ 220 stcb->sctp_socket->so_snd.sb_cc = 0; \ 221 } \ 222 } \ 223 } \ 224} while (0) 225 226#endif 227 228#define sctp_free_spbufspace(stcb, asoc, sp) \ 229do { \ 230 if (sp->data != NULL) { \ 231 atomic_add_int(&(asoc)->chunks_on_out_queue, -1); \ 232 if ((asoc)->total_output_queue_size >= sp->length) { \ 233 atomic_add_int(&(asoc)->total_output_queue_size,sp->length); \ 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 >= sp->length) { \ 240 atomic_add_int(&stcb->sctp_socket->so_snd.sb_cc,sp->length); \ 241 } else { \ 242 stcb->sctp_socket->so_snd.sb_cc = 0; \ 243 } \ 244 } \ 245 } \ 246} while (0) 247 248#define sctp_snd_sb_alloc(stcb, sz) \ 249do { \ 250 atomic_add_int(&stcb->asoc.total_output_queue_size,sz); \ 251 if ((stcb->sctp_socket != NULL) && \ 252 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \ 253 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \ 254 atomic_add_int(&stcb->sctp_socket->so_snd.sb_cc,sz); \ 255 } \ 256} while (0) 257 258 259int 260sctp_soreceive(struct socket *so, struct sockaddr **psa, 261 struct uio *uio, 262 struct mbuf **mp0, 263 struct mbuf **controlp, 264 int *flagsp); 265 266 267#ifdef SCTP_STAT_LOGGING 268void 269 sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d); 270 271void 272sctp_wakeup_log(struct sctp_tcb *stcb, 273 uint32_t cumtsn, 274 uint32_t wake_cnt, int from); 275 276void sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t, uint16_t, uint16_t, int); 277 278void sctp_log_nagle_event(struct sctp_tcb *stcb, int action); 279 280 281void 282 sctp_log_mb(struct mbuf *m, int from); 283 284void 285sctp_sblog(struct sockbuf *sb, 286 struct sctp_tcb *stcb, int from, int incr); 287 288void 289sctp_log_strm_del(struct sctp_queued_to_read *control, 290 struct sctp_queued_to_read *poschk, 291 int from); 292void sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *, int, uint8_t); 293void rto_logging(struct sctp_nets *net, int from); 294 295void sctp_log_closing(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int16_t loc); 296 297void sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from); 298void sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *, int, int, uint8_t); 299void sctp_log_block(uint8_t, struct socket *, struct sctp_association *, int); 300void sctp_log_rwnd(uint8_t, uint32_t, uint32_t, uint32_t); 301void sctp_log_mbcnt(uint8_t, uint32_t, uint32_t, uint32_t, uint32_t); 302void sctp_log_rwnd_set(uint8_t, uint32_t, uint32_t, uint32_t, uint32_t); 303int sctp_fill_stat_log(void *, size_t *); 304void sctp_log_fr(uint32_t, uint32_t, uint32_t, int); 305void sctp_log_sack(uint32_t, uint32_t, uint32_t, uint16_t, uint16_t, int); 306void sctp_log_map(uint32_t, uint32_t, uint32_t, int); 307 308void sctp_clr_stat_log(void); 309 310#endif 311 312#ifdef SCTP_AUDITING_ENABLED 313void 314sctp_auditing(int, struct sctp_inpcb *, struct sctp_tcb *, 315 struct sctp_nets *); 316void sctp_audit_log(uint8_t, uint8_t); 317 318#endif 319 320 321#endif /* _KERNEL */ 322#endif 323