1 /*- 2 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved. 3 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. 4 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are met: 8 * 9 * a) Redistributions of source code must retain the above copyright notice, 10 * this list of conditions and the following disclaimer. 11 * 12 * b) Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in 14 * the documentation and/or other materials provided with the distribution. 15 * 16 * c) Neither the name of Cisco Systems, Inc. nor the names of its 17 * contributors may be used to endorse or promote products derived 18 * from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 30 * THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD$"); 35 36 #ifndef _NETINET_SCTP_INDATA_H_ 37 #define _NETINET_SCTP_INDATA_H_ 38 39 #if defined(_KERNEL) || defined(__Userspace__) 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 uint32_t stream_seq, uint8_t flags, 47 struct mbuf *dm); 48 49 50 #define sctp_build_readq_entry_mac(_ctl, in_it, context, net, tsn, ppid, stream_no, stream_seq, flags, dm, tfsn, msgid) do { \ 51 if (_ctl) { \ 52 atomic_add_int(&((net)->ref_count), 1); \ 53 memset(_ctl, 0, sizeof(struct sctp_queued_to_read)); \ 54 (_ctl)->sinfo_stream = stream_no; \ 55 (_ctl)->sinfo_ssn = stream_seq; \ 56 TAILQ_INIT(&_ctl->reasm); \ 57 (_ctl)->top_fsn = tfsn; \ 58 (_ctl)->msg_id = msgid; \ 59 (_ctl)->sinfo_flags = (flags << 8); \ 60 (_ctl)->sinfo_ppid = ppid; \ 61 (_ctl)->sinfo_context = context; \ 62 (_ctl)->fsn_included = 0xffffffff; \ 63 (_ctl)->top_fsn = 0xffffffff; \ 64 (_ctl)->sinfo_tsn = tsn; \ 65 (_ctl)->sinfo_cumtsn = tsn; \ 66 (_ctl)->sinfo_assoc_id = sctp_get_associd((in_it)); \ 67 (_ctl)->whoFrom = net; \ 68 (_ctl)->data = dm; \ 69 (_ctl)->stcb = (in_it); \ 70 (_ctl)->port_from = (in_it)->rport; \ 71 } \ 72 } while (0) 73 74 75 76 struct mbuf * 77 sctp_build_ctl_nchunk(struct sctp_inpcb *inp, 78 struct sctp_sndrcvinfo *sinfo); 79 80 void sctp_set_rwnd(struct sctp_tcb *, struct sctp_association *); 81 82 uint32_t 83 sctp_calc_rwnd(struct sctp_tcb *stcb, struct sctp_association *asoc); 84 85 void 86 sctp_express_handle_sack(struct sctp_tcb *stcb, uint32_t cumack, 87 uint32_t rwnd, int *abort_now, int ecne_seen); 88 89 void 90 sctp_handle_sack(struct mbuf *m, int offset_seg, int offset_dup, 91 struct sctp_tcb *stcb, 92 uint16_t num_seg, uint16_t num_nr_seg, uint16_t num_dup, 93 int *abort_now, uint8_t flags, 94 uint32_t cum_ack, uint32_t rwnd, int ecne_seen); 95 96 /* draft-ietf-tsvwg-usctp */ 97 void 98 sctp_handle_forward_tsn(struct sctp_tcb *, 99 struct sctp_forward_tsn_chunk *, int *, struct mbuf *, int); 100 101 struct sctp_tmit_chunk * 102 sctp_try_advance_peer_ack_point(struct sctp_tcb *, struct sctp_association *); 103 104 void sctp_service_queues(struct sctp_tcb *, struct sctp_association *); 105 106 void 107 sctp_update_acked(struct sctp_tcb *, struct sctp_shutdown_chunk *, int *); 108 109 int 110 sctp_process_data(struct mbuf **, int, int *, int, 111 struct sctp_inpcb *, struct sctp_tcb *, 112 struct sctp_nets *, uint32_t *); 113 114 void sctp_slide_mapping_arrays(struct sctp_tcb *stcb); 115 116 void sctp_sack_check(struct sctp_tcb *, int); 117 118 #endif 119 #endif 120