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 /* $KAME: sctp_indata.h,v 1.9 2005/03/06 16:04:17 itojun Exp $ */ 32 33 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD$"); 35 36 #ifndef __sctp_indata_h__ 37 #define __sctp_indata_h__ 38 39 #if defined(_KERNEL) 40 41 struct sctp_queued_to_read * 42 sctp_build_readq_entry(struct sctp_tcb *stcb, 43 struct sctp_nets *net, 44 uint32_t tsn, uint32_t ppid, 45 uint32_t context, uint16_t stream_no, 46 uint16_t stream_seq, uint8_t flags, 47 struct mbuf *dm); 48 49 50 #define sctp_build_readq_entry_mac(_ctl, in_it, a, net, tsn, ppid, context, stream_no, stream_seq, flags, dm) do { \ 51 if (_ctl) { \ 52 atomic_add_int(&((net)->ref_count), 1); \ 53 (_ctl)->sinfo_stream = stream_no; \ 54 (_ctl)->sinfo_ssn = stream_seq; \ 55 (_ctl)->sinfo_flags = (flags << 8); \ 56 (_ctl)->sinfo_ppid = ppid; \ 57 (_ctl)->sinfo_context = a; \ 58 (_ctl)->sinfo_timetolive = 0; \ 59 (_ctl)->sinfo_tsn = tsn; \ 60 (_ctl)->sinfo_cumtsn = tsn; \ 61 (_ctl)->sinfo_assoc_id = sctp_get_associd((in_it)); \ 62 (_ctl)->length = 0; \ 63 (_ctl)->held_length = 0; \ 64 (_ctl)->whoFrom = net; \ 65 (_ctl)->data = dm; \ 66 (_ctl)->tail_mbuf = NULL; \ 67 (_ctl)->aux_data = NULL; \ 68 (_ctl)->stcb = (in_it); \ 69 (_ctl)->port_from = (in_it)->rport; \ 70 (_ctl)->spec_flags = 0; \ 71 (_ctl)->do_not_ref_stcb = 0; \ 72 (_ctl)->end_added = 0; \ 73 (_ctl)->pdapi_aborted = 0; \ 74 (_ctl)->some_taken = 0; \ 75 } \ 76 } while (0) 77 78 79 80 struct mbuf * 81 sctp_build_ctl_nchunk(struct sctp_inpcb *inp, 82 struct sctp_sndrcvinfo *sinfo); 83 84 char * 85 sctp_build_ctl_cchunk(struct sctp_inpcb *inp, 86 int *control_len, 87 struct sctp_sndrcvinfo *sinfo); 88 89 void sctp_set_rwnd(struct sctp_tcb *, struct sctp_association *); 90 91 uint32_t 92 sctp_calc_rwnd(struct sctp_tcb *stcb, struct sctp_association *asoc); 93 94 void 95 sctp_express_handle_sack(struct sctp_tcb *stcb, uint32_t cumack, 96 uint32_t rwnd, int nonce_sum_flag, int *abort_now); 97 98 void 99 sctp_handle_sack(struct mbuf *m, int offset, struct sctp_sack_chunk *, struct sctp_tcb *, 100 struct sctp_nets *, int *, int, uint32_t); 101 102 /* draft-ietf-tsvwg-usctp */ 103 void 104 sctp_handle_forward_tsn(struct sctp_tcb *, 105 struct sctp_forward_tsn_chunk *, int *, struct mbuf *, int); 106 107 struct sctp_tmit_chunk * 108 sctp_try_advance_peer_ack_point(struct sctp_tcb *, struct sctp_association *); 109 110 void sctp_service_queues(struct sctp_tcb *, struct sctp_association *); 111 112 void 113 sctp_update_acked(struct sctp_tcb *, struct sctp_shutdown_chunk *, 114 struct sctp_nets *, int *); 115 116 int 117 sctp_process_data(struct mbuf **, int, int *, int, struct sctphdr *, 118 struct sctp_inpcb *, struct sctp_tcb *, 119 struct sctp_nets *, uint32_t *); 120 121 void sctp_sack_check(struct sctp_tcb *, int, int, int *); 122 123 #endif 124 #endif 125