sctp_indata.h revision 294147 
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: stable/10/sys/netinet/sctp_indata.h 294147 2016-01-16 12:47:28Z tuexen $");
35
36#ifndef _NETINET_SCTP_INDATA_H_
37#define _NETINET_SCTP_INDATA_H_
38
39#if defined(_KERNEL) || defined(__Userspace__)
40
41struct sctp_queued_to_read *
42sctp_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, context, net, tsn, ppid, 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 = context; \
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
80struct mbuf *
81sctp_build_ctl_nchunk(struct sctp_inpcb *inp,
82    struct sctp_sndrcvinfo *sinfo);
83
84void sctp_set_rwnd(struct sctp_tcb *, struct sctp_association *);
85
86uint32_t
87sctp_calc_rwnd(struct sctp_tcb *stcb, struct sctp_association *asoc);
88
89void
90sctp_express_handle_sack(struct sctp_tcb *stcb, uint32_t cumack,
91    uint32_t rwnd, int *abort_now, int ecne_seen);
92
93void
94sctp_handle_sack(struct mbuf *m, int offset_seg, int offset_dup,
95    struct sctp_tcb *stcb,
96    uint16_t num_seg, uint16_t num_nr_seg, uint16_t num_dup,
97    int *abort_now, uint8_t flags,
98    uint32_t cum_ack, uint32_t rwnd, int ecne_seen);
99
100/* draft-ietf-tsvwg-usctp */
101void
102sctp_handle_forward_tsn(struct sctp_tcb *,
103    struct sctp_forward_tsn_chunk *, int *, struct mbuf *, int);
104
105struct sctp_tmit_chunk *
106                sctp_try_advance_peer_ack_point(struct sctp_tcb *, struct sctp_association *);
107
108void sctp_service_queues(struct sctp_tcb *, struct sctp_association *);
109
110void
111     sctp_update_acked(struct sctp_tcb *, struct sctp_shutdown_chunk *, int *);
112
113int
114sctp_process_data(struct mbuf **, int, int *, int,
115    struct sctp_inpcb *, struct sctp_tcb *,
116    struct sctp_nets *, uint32_t *);
117
118void sctp_slide_mapping_arrays(struct sctp_tcb *stcb);
119
120void sctp_sack_check(struct sctp_tcb *, int);
121
122#endif
123#endif
124