1 /*- 2 * Copyright (c) 2001-2006, 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 41 #if defined(_KERNEL) 42 43 #ifdef SCTP_MBUF_LOGGING 44 45 struct mbuf *sctp_m_free(struct mbuf *m); 46 void sctp_m_freem(struct mbuf *m); 47 48 #else 49 #define sctp_m_free m_free 50 #define sctp_m_freem m_freem 51 #endif 52 53 54 #define sctp_m_copym m_copym 55 56 #define sctp_get_associd(stcb) ((sctp_assoc_t)stcb->asoc.assoc_id) 57 58 59 /* 60 * Function prototypes 61 */ 62 struct ifaddr *sctp_find_ifa_by_addr(struct sockaddr *sa); 63 64 uint32_t sctp_select_initial_TSN(struct sctp_pcb *); 65 66 uint32_t sctp_select_a_tag(struct sctp_inpcb *); 67 68 int sctp_init_asoc(struct sctp_inpcb *, struct sctp_association *, int, uint32_t); 69 70 void sctp_fill_random_store(struct sctp_pcb *); 71 72 int 73 sctp_timer_start(int, struct sctp_inpcb *, struct sctp_tcb *, 74 struct sctp_nets *); 75 76 int 77 sctp_timer_stop(int, struct sctp_inpcb *, struct sctp_tcb *, 78 struct sctp_nets *, uint32_t); 79 80 uint32_t sctp_calculate_sum(struct mbuf *, int32_t *, uint32_t); 81 82 void 83 sctp_mtu_size_reset(struct sctp_inpcb *, struct sctp_association *, 84 u_long); 85 86 void 87 sctp_add_to_readq(struct sctp_inpcb *inp, 88 struct sctp_tcb *stcb, 89 struct sctp_queued_to_read *control, 90 struct sockbuf *sb, 91 int end); 92 93 int 94 sctp_append_to_readq(struct sctp_inpcb *inp, 95 struct sctp_tcb *stcb, 96 struct sctp_queued_to_read *control, 97 struct mbuf *m, 98 int end, 99 int new_cumack, 100 struct sockbuf *sb); 101 102 103 int find_next_best_mtu(int); 104 105 void 106 sctp_timeout_handler(void *); 107 108 uint32_t 109 sctp_calculate_rto(struct sctp_tcb *, struct sctp_association *, 110 struct sctp_nets *, struct timeval *); 111 112 uint32_t sctp_calculate_len(struct mbuf *); 113 114 caddr_t sctp_m_getptr(struct mbuf *, int, int, uint8_t *); 115 116 struct sctp_paramhdr * 117 sctp_get_next_param(struct mbuf *, int, 118 struct sctp_paramhdr *, int); 119 120 int sctp_add_pad_tombuf(struct mbuf *, int); 121 122 int sctp_pad_lastmbuf(struct mbuf *, int, struct mbuf *); 123 124 void sctp_ulp_notify(uint32_t, struct sctp_tcb *, uint32_t, void *); 125 126 void 127 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp, 128 struct sctp_inpcb *new_inp, 129 struct sctp_tcb *stcb); 130 131 132 void sctp_stop_timers_for_shutdown(struct sctp_tcb *); 133 134 void sctp_report_all_outbound(struct sctp_tcb *, int); 135 136 int sctp_expand_mapping_array(struct sctp_association *); 137 138 void sctp_abort_notification(struct sctp_tcb *, int); 139 140 /* We abort responding to an IP packet for some reason */ 141 void 142 sctp_abort_association(struct sctp_inpcb *, struct sctp_tcb *, 143 struct mbuf *, int, struct sctphdr *, struct mbuf *); 144 145 /* We choose to abort via user input */ 146 void 147 sctp_abort_an_association(struct sctp_inpcb *, struct sctp_tcb *, int, 148 struct mbuf *); 149 150 void 151 sctp_handle_ootb(struct mbuf *, int, int, struct sctphdr *, 152 struct sctp_inpcb *, struct mbuf *); 153 154 int sctp_is_there_an_abort_here(struct mbuf *, int, uint32_t *); 155 uint32_t sctp_is_same_scope(struct sockaddr_in6 *, struct sockaddr_in6 *); 156 struct sockaddr_in6 * 157 sctp_recover_scope(struct sockaddr_in6 *, 158 struct sockaddr_in6 *); 159 160 161 162 163 #define sctp_recover_scope_mac(addr, store) do { \ 164 if ((addr->sin6_family == AF_INET6) && \ 165 (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr)) && \ 166 (addr->sin6_scope_id == 0)) { \ 167 *store = *addr; \ 168 if (!sa6_recoverscope(store)) { \ 169 addr = store; \ 170 } \ 171 } \ 172 } while (0) 173 174 175 176 int sctp_cmpaddr(struct sockaddr *, struct sockaddr *); 177 178 void sctp_print_address(struct sockaddr *); 179 void sctp_print_address_pkt(struct ip *, struct sctphdr *); 180 181 void 182 sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, 183 uint32_t error, int no_lock); 184 185 int 186 sctp_release_pr_sctp_chunk(struct sctp_tcb *, struct sctp_tmit_chunk *, 187 int, struct sctpchunk_listhead *); 188 189 struct mbuf *sctp_generate_invmanparam(int); 190 191 192 #ifdef SCTP_MBCNT_LOGGING 193 void 194 sctp_free_bufspace(struct sctp_tcb *, struct sctp_association *, 195 struct sctp_tmit_chunk *); 196 197 #else 198 #define sctp_free_bufspace(stcb, asoc, tp1, chk_cnt) \ 199 do { \ 200 if (tp1->data != NULL) { \ 201 atomic_add_int(&((asoc)->chunks_on_out_queue), -chk_cnt); \ 202 if ((asoc)->total_output_queue_size >= tp1->book_size) { \ 203 atomic_add_int(&((asoc)->total_output_queue_size), -tp1->book_size); \ 204 } else { \ 205 (asoc)->total_output_queue_size = 0; \ 206 } \ 207 if (stcb->sctp_socket && ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \ 208 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \ 209 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) { \ 210 atomic_add_int(&((stcb)->sctp_socket->so_snd.sb_cc), -tp1->book_size); \ 211 } else { \ 212 stcb->sctp_socket->so_snd.sb_cc = 0; \ 213 } \ 214 } \ 215 } \ 216 } while (0) 217 218 #endif 219 220 #define sctp_free_spbufspace(stcb, asoc, sp) \ 221 do { \ 222 if (sp->data != NULL) { \ 223 atomic_add_int(&(asoc)->chunks_on_out_queue, -1); \ 224 if ((asoc)->total_output_queue_size >= sp->length) { \ 225 atomic_add_int(&(asoc)->total_output_queue_size,sp->length); \ 226 } else { \ 227 (asoc)->total_output_queue_size = 0; \ 228 } \ 229 if (stcb->sctp_socket && ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \ 230 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \ 231 if (stcb->sctp_socket->so_snd.sb_cc >= sp->length) { \ 232 atomic_add_int(&stcb->sctp_socket->so_snd.sb_cc,sp->length); \ 233 } else { \ 234 stcb->sctp_socket->so_snd.sb_cc = 0; \ 235 } \ 236 } \ 237 } \ 238 } while (0) 239 240 #define sctp_snd_sb_alloc(stcb, sz) \ 241 do { \ 242 atomic_add_int(&stcb->asoc.total_output_queue_size,sz); \ 243 if ((stcb->sctp_socket != NULL) && \ 244 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \ 245 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \ 246 atomic_add_int(&stcb->sctp_socket->so_snd.sb_cc,sz); \ 247 } \ 248 } while (0) 249 250 251 int 252 sctp_soreceive(struct socket *so, struct sockaddr **psa, 253 struct uio *uio, 254 struct mbuf **mp0, 255 struct mbuf **controlp, 256 int *flagsp); 257 258 259 #ifdef SCTP_STAT_LOGGING 260 void 261 sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d); 262 263 void 264 sctp_wakeup_log(struct sctp_tcb *stcb, 265 uint32_t cumtsn, 266 uint32_t wake_cnt, int from); 267 268 void sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t, uint16_t, uint16_t, int); 269 270 void sctp_log_nagle_event(struct sctp_tcb *stcb, int action); 271 272 273 void 274 sctp_log_mb(struct mbuf *m, int from); 275 276 void 277 sctp_sblog(struct sockbuf *sb, 278 struct sctp_tcb *stcb, int from, int incr); 279 280 void 281 sctp_log_strm_del(struct sctp_queued_to_read *control, 282 struct sctp_queued_to_read *poschk, 283 int from); 284 void sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *, int, uint8_t); 285 void rto_logging(struct sctp_nets *net, int from); 286 287 void sctp_log_closing(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int16_t loc); 288 289 void sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from); 290 void sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *, int, int, uint8_t); 291 void sctp_log_block(uint8_t, struct socket *, struct sctp_association *, int); 292 void sctp_log_rwnd(uint8_t, uint32_t, uint32_t, uint32_t); 293 void sctp_log_mbcnt(uint8_t, uint32_t, uint32_t, uint32_t, uint32_t); 294 void sctp_log_rwnd_set(uint8_t, uint32_t, uint32_t, uint32_t, uint32_t); 295 int sctp_fill_stat_log(struct mbuf *); 296 void sctp_log_fr(uint32_t, uint32_t, uint32_t, int); 297 void sctp_log_sack(uint32_t, uint32_t, uint32_t, uint16_t, uint16_t, int); 298 void sctp_log_map(uint32_t, uint32_t, uint32_t, int); 299 300 void sctp_clr_stat_log(void); 301 302 #endif 303 304 #ifdef SCTP_AUDITING_ENABLED 305 void 306 sctp_auditing(int, struct sctp_inpcb *, struct sctp_tcb *, 307 struct sctp_nets *); 308 void sctp_audit_log(uint8_t, uint8_t); 309 310 #endif 311 312 313 #endif /* _KERNEL */ 314 #endif 315