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1/* SCTP kernel implementation
2 * (C) Copyright IBM Corp. 2001, 2004
3 * Copyright (c) 1999-2000 Cisco, Inc.
4 * Copyright (c) 1999-2001 Motorola, Inc.
5 * Copyright (c) 2001 Intel Corp.
6 * Copyright (c) 2001 Nokia, Inc.
7 * Copyright (c) 2001 La Monte H.P. Yarroll
8 *
9 * These are the definitions needed for the sctp_ulpq type. The
10 * sctp_ulpq is the interface between the Upper Layer Protocol, or ULP,
11 * and the core SCTP state machine. This is the component which handles
12 * reassembly and ordering.
13 *
14 * This SCTP implementation is free software;
15 * you can redistribute it and/or modify it under the terms of
16 * the GNU General Public License as published by
17 * the Free Software Foundation; either version 2, or (at your option)
18 * any later version.
19 *
20 * This SCTP implementation is distributed in the hope that it
21 * will be useful, but WITHOUT ANY WARRANTY; without even the implied
22 * ************************
23 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
24 * See the GNU General Public License for more details.
25 *
26 * You should have received a copy of the GNU General Public License
27 * along with GNU CC; see the file COPYING. If not, write to
28 * the Free Software Foundation, 59 Temple Place - Suite 330,
29 * Boston, MA 02111-1307, USA.
30 *
31 * Please send any bug reports or fixes you make to the
32 * email addresses:
33 * lksctp developers <lksctp-developers@lists.sourceforge.net>
34 *
35 * Or submit a bug report through the following website:
36 * http://www.sf.net/projects/lksctp
37 *
38 * Written or modified by:
39 * Jon Grimm <jgrimm@us.ibm.com>
40 * La Monte H.P. Yarroll <piggy@acm.org>
41 * Sridhar Samudrala <sri@us.ibm.com>
42 *
43 * Any bugs reported given to us we will try to fix... any fixes shared will
44 * be incorporated into the next SCTP release.
45 */
46
47#ifndef __sctp_ulpqueue_h__
48#define __sctp_ulpqueue_h__
49
50/* A structure to carry information to the ULP (e.g. Sockets API) */
51struct sctp_ulpq {
52 char malloced;
53 char pd_mode;
54 struct sctp_association *asoc;
55 struct sk_buff_head reasm;
56 struct sk_buff_head lobby;
57};
58
59/* Prototypes. */
60struct sctp_ulpq *sctp_ulpq_init(struct sctp_ulpq *,
61 struct sctp_association *);
62void sctp_ulpq_flush(struct sctp_ulpq *ulpq);
63void sctp_ulpq_free(struct sctp_ulpq *);
64
65/* Add a new DATA chunk for processing. */
66int sctp_ulpq_tail_data(struct sctp_ulpq *, struct sctp_chunk *, gfp_t);
67
68/* Add a new event for propagation to the ULP. */
69int sctp_ulpq_tail_event(struct sctp_ulpq *, struct sctp_ulpevent *ev);
70
71/* Renege previously received chunks. */
72void sctp_ulpq_renege(struct sctp_ulpq *, struct sctp_chunk *, gfp_t);
73
74/* Perform partial delivery. */
75void sctp_ulpq_partial_delivery(struct sctp_ulpq *, struct sctp_chunk *, gfp_t);
76
77/* Abort the partial delivery. */
78void sctp_ulpq_abort_pd(struct sctp_ulpq *, gfp_t);
79
80/* Clear the partial data delivery condition on this socket. */
81int sctp_clear_pd(struct sock *sk, struct sctp_association *asoc);
82
83/* Skip over an SSN. */
84void sctp_ulpq_skip(struct sctp_ulpq *ulpq, __u16 sid, __u16 ssn);
85
86void sctp_ulpq_reasm_flushtsn(struct sctp_ulpq *, __u32);
87#endif /* __sctp_ulpqueue_h__ */
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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/* SCTP kernel implementation
3 * (C) Copyright IBM Corp. 2001, 2004
4 * Copyright (c) 1999-2000 Cisco, Inc.
5 * Copyright (c) 1999-2001 Motorola, Inc.
6 * Copyright (c) 2001 Intel Corp.
7 * Copyright (c) 2001 Nokia, Inc.
8 * Copyright (c) 2001 La Monte H.P. Yarroll
9 *
10 * These are the definitions needed for the sctp_ulpq type. The
11 * sctp_ulpq is the interface between the Upper Layer Protocol, or ULP,
12 * and the core SCTP state machine. This is the component which handles
13 * reassembly and ordering.
14 *
15 * Please send any bug reports or fixes you make to the
16 * email addresses:
17 * lksctp developers <linux-sctp@vger.kernel.org>
18 *
19 * Written or modified by:
20 * Jon Grimm <jgrimm@us.ibm.com>
21 * La Monte H.P. Yarroll <piggy@acm.org>
22 * Sridhar Samudrala <sri@us.ibm.com>
23 */
24
25#ifndef __sctp_ulpqueue_h__
26#define __sctp_ulpqueue_h__
27
28/* A structure to carry information to the ULP (e.g. Sockets API) */
29struct sctp_ulpq {
30 char pd_mode;
31 struct sctp_association *asoc;
32 struct sk_buff_head reasm;
33 struct sk_buff_head reasm_uo;
34 struct sk_buff_head lobby;
35};
36
37/* Prototypes. */
38void sctp_ulpq_init(struct sctp_ulpq *ulpq, struct sctp_association *asoc);
39void sctp_ulpq_flush(struct sctp_ulpq *ulpq);
40void sctp_ulpq_free(struct sctp_ulpq *);
41
42/* Add a new DATA chunk for processing. */
43int sctp_ulpq_tail_data(struct sctp_ulpq *, struct sctp_chunk *, gfp_t);
44
45/* Add a new event for propagation to the ULP. */
46int sctp_ulpq_tail_event(struct sctp_ulpq *, struct sk_buff_head *skb_list);
47
48/* Renege previously received chunks. */
49void sctp_ulpq_renege(struct sctp_ulpq *, struct sctp_chunk *, gfp_t);
50
51/* Perform partial delivery. */
52void sctp_ulpq_partial_delivery(struct sctp_ulpq *, gfp_t);
53
54/* Abort the partial delivery. */
55void sctp_ulpq_abort_pd(struct sctp_ulpq *, gfp_t);
56
57/* Clear the partial data delivery condition on this socket. */
58int sctp_clear_pd(struct sock *sk, struct sctp_association *asoc);
59
60/* Skip over an SSN. */
61void sctp_ulpq_skip(struct sctp_ulpq *ulpq, __u16 sid, __u16 ssn);
62
63void sctp_ulpq_reasm_flushtsn(struct sctp_ulpq *, __u32);
64
65__u16 sctp_ulpq_renege_list(struct sctp_ulpq *ulpq,
66 struct sk_buff_head *list, __u16 needed);
67
68#endif /* __sctp_ulpqueue_h__ */