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("$FreeBSD$"); 36 #ifndef __sctputil_h__ 37 #define __sctputil_h__ 38 39 40 #if defined(_KERNEL) 41 42 #ifdef SCTP_MBUF_LOGGING 43 44 struct mbuf *sctp_m_free(struct mbuf *m); 45 void 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 */ 59 struct ifaddr *sctp_find_ifa_by_addr(struct sockaddr *sa); 60 61 uint32_t sctp_select_initial_TSN(struct sctp_pcb *); 62 63 uint32_t sctp_select_a_tag(struct sctp_inpcb *); 64 65 int sctp_init_asoc(struct sctp_inpcb *, struct sctp_association *, int, uint32_t); 66 67 void sctp_fill_random_store(struct sctp_pcb *); 68 69 int 70 sctp_timer_start(int, struct sctp_inpcb *, struct sctp_tcb *, 71 struct sctp_nets *); 72 73 int 74 sctp_timer_stop(int, struct sctp_inpcb *, struct sctp_tcb *, 75 struct sctp_nets *, uint32_t); 76 77 uint32_t sctp_calculate_sum(struct mbuf *, int32_t *, uint32_t); 78 79 void 80 sctp_mtu_size_reset(struct sctp_inpcb *, struct sctp_association *, uint32_t); 81 82 void 83 sctp_add_to_readq(struct sctp_inpcb *inp, 84 struct sctp_tcb *stcb, 85 struct sctp_queued_to_read *control, 86 struct sockbuf *sb, 87 int end); 88 89 int 90 sctp_append_to_readq(struct sctp_inpcb *inp, 91 struct sctp_tcb *stcb, 92 struct sctp_queued_to_read *control, 93 struct mbuf *m, 94 int end, 95 int new_cumack, 96 struct sockbuf *sb); 97 98 99 int find_next_best_mtu(int); 100 101 void 102 sctp_timeout_handler(void *); 103 104 uint32_t 105 sctp_calculate_rto(struct sctp_tcb *, struct sctp_association *, 106 struct sctp_nets *, struct timeval *); 107 108 uint32_t sctp_calculate_len(struct mbuf *); 109 110 caddr_t sctp_m_getptr(struct mbuf *, int, int, uint8_t *); 111 112 struct sctp_paramhdr * 113 sctp_get_next_param(struct mbuf *, int, 114 struct sctp_paramhdr *, int); 115 116 int sctp_add_pad_tombuf(struct mbuf *, int); 117 118 int sctp_pad_lastmbuf(struct mbuf *, int, struct mbuf *); 119 120 void sctp_ulp_notify(uint32_t, struct sctp_tcb *, uint32_t, void *); 121 122 void 123 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp, 124 struct sctp_inpcb *new_inp, 125 struct sctp_tcb *stcb); 126 127 128 void sctp_stop_timers_for_shutdown(struct sctp_tcb *); 129 130 void sctp_report_all_outbound(struct sctp_tcb *, int); 131 132 int sctp_expand_mapping_array(struct sctp_association *); 133 134 void sctp_abort_notification(struct sctp_tcb *, int); 135 136 /* We abort responding to an IP packet for some reason */ 137 void 138 sctp_abort_association(struct sctp_inpcb *, struct sctp_tcb *, 139 struct mbuf *, int, struct sctphdr *, struct mbuf *); 140 141 /* We choose to abort via user input */ 142 void 143 sctp_abort_an_association(struct sctp_inpcb *, struct sctp_tcb *, int, 144 struct mbuf *); 145 146 void 147 sctp_handle_ootb(struct mbuf *, int, int, struct sctphdr *, 148 struct sctp_inpcb *, struct mbuf *); 149 150 int sctp_is_there_an_abort_here(struct mbuf *, int, uint32_t *); 151 uint32_t sctp_is_same_scope(struct sockaddr_in6 *, struct sockaddr_in6 *); 152 153 struct sockaddr_in6 * 154 sctp_recover_scope(struct sockaddr_in6 *, struct sockaddr_in6 *); 155 156 #define sctp_recover_scope_mac(addr, store) do { \ 157 if ((addr->sin6_family == AF_INET6) && \ 158 (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr))) { \ 159 *store = *addr; \ 160 if (addr->sin6_scope_id == 0) { \ 161 if (!sa6_recoverscope(store)) { \ 162 addr = store; \ 163 } \ 164 } else { \ 165 in6_clearscope(&addr->sin6_addr); \ 166 addr = store; \ 167 } \ 168 } \ 169 } while (0) 170 171 172 int sctp_cmpaddr(struct sockaddr *, struct sockaddr *); 173 174 void sctp_print_address(struct sockaddr *); 175 void sctp_print_address_pkt(struct ip *, struct sctphdr *); 176 177 void 178 sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, 179 uint32_t error, int no_lock); 180 181 int 182 sctp_release_pr_sctp_chunk(struct sctp_tcb *, struct sctp_tmit_chunk *, 183 int, struct sctpchunk_listhead *); 184 185 struct mbuf *sctp_generate_invmanparam(int); 186 187 188 #ifdef SCTP_MBCNT_LOGGING 189 void 190 sctp_free_bufspace(struct sctp_tcb *, struct sctp_association *, 191 struct sctp_tmit_chunk *); 192 193 #else 194 #define sctp_free_bufspace(stcb, asoc, tp1, chk_cnt) \ 195 do { \ 196 if (tp1->data != NULL) { \ 197 atomic_add_int(&((asoc)->chunks_on_out_queue), -chk_cnt); \ 198 if ((asoc)->total_output_queue_size >= tp1->book_size) { \ 199 atomic_add_int(&((asoc)->total_output_queue_size), -tp1->book_size); \ 200 } else { \ 201 (asoc)->total_output_queue_size = 0; \ 202 } \ 203 if (stcb->sctp_socket && ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \ 204 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \ 205 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) { \ 206 atomic_add_int(&((stcb)->sctp_socket->so_snd.sb_cc), -tp1->book_size); \ 207 } else { \ 208 stcb->sctp_socket->so_snd.sb_cc = 0; \ 209 } \ 210 } \ 211 } \ 212 } while (0) 213 214 #endif 215 216 #define sctp_free_spbufspace(stcb, asoc, sp) \ 217 do { \ 218 if (sp->data != NULL) { \ 219 atomic_add_int(&(asoc)->chunks_on_out_queue, -1); \ 220 if ((asoc)->total_output_queue_size >= sp->length) { \ 221 atomic_add_int(&(asoc)->total_output_queue_size,sp->length); \ 222 } else { \ 223 (asoc)->total_output_queue_size = 0; \ 224 } \ 225 if (stcb->sctp_socket && ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \ 226 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \ 227 if (stcb->sctp_socket->so_snd.sb_cc >= sp->length) { \ 228 atomic_add_int(&stcb->sctp_socket->so_snd.sb_cc,sp->length); \ 229 } else { \ 230 stcb->sctp_socket->so_snd.sb_cc = 0; \ 231 } \ 232 } \ 233 } \ 234 } while (0) 235 236 #define sctp_snd_sb_alloc(stcb, sz) \ 237 do { \ 238 atomic_add_int(&stcb->asoc.total_output_queue_size,sz); \ 239 if ((stcb->sctp_socket != NULL) && \ 240 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \ 241 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \ 242 atomic_add_int(&stcb->sctp_socket->so_snd.sb_cc,sz); \ 243 } \ 244 } while (0) 245 246 247 int 248 sctp_soreceive(struct socket *so, struct sockaddr **psa, 249 struct uio *uio, 250 struct mbuf **mp0, 251 struct mbuf **controlp, 252 int *flagsp); 253 254 255 #ifdef SCTP_STAT_LOGGING 256 void 257 sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d); 258 259 void 260 sctp_wakeup_log(struct sctp_tcb *stcb, 261 uint32_t cumtsn, 262 uint32_t wake_cnt, int from); 263 264 void sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t, uint16_t, uint16_t, int); 265 266 void sctp_log_nagle_event(struct sctp_tcb *stcb, int action); 267 268 269 void 270 sctp_log_mb(struct mbuf *m, int from); 271 272 void 273 sctp_sblog(struct sockbuf *sb, 274 struct sctp_tcb *stcb, int from, int incr); 275 276 void 277 sctp_log_strm_del(struct sctp_queued_to_read *control, 278 struct sctp_queued_to_read *poschk, 279 int from); 280 void sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *, int, uint8_t); 281 void rto_logging(struct sctp_nets *net, int from); 282 283 void sctp_log_closing(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int16_t loc); 284 285 void sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from); 286 void sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *, int, int, uint8_t); 287 void sctp_log_block(uint8_t, struct socket *, struct sctp_association *, int); 288 void sctp_log_rwnd(uint8_t, uint32_t, uint32_t, uint32_t); 289 void sctp_log_mbcnt(uint8_t, uint32_t, uint32_t, uint32_t, uint32_t); 290 void sctp_log_rwnd_set(uint8_t, uint32_t, uint32_t, uint32_t, uint32_t); 291 int sctp_fill_stat_log(struct mbuf *); 292 void sctp_log_fr(uint32_t, uint32_t, uint32_t, int); 293 void sctp_log_sack(uint32_t, uint32_t, uint32_t, uint16_t, uint16_t, int); 294 void sctp_log_map(uint32_t, uint32_t, uint32_t, int); 295 296 void sctp_clr_stat_log(void); 297 298 #endif 299 300 #ifdef SCTP_AUDITING_ENABLED 301 void 302 sctp_auditing(int, struct sctp_inpcb *, struct sctp_tcb *, 303 struct sctp_nets *); 304 void sctp_audit_log(uint8_t, uint8_t); 305 306 #endif 307 308 309 #endif /* _KERNEL */ 310 #endif 311