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60c778b2 | 1 | /* SCTP kernel implementation |
1da177e4 LT |
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 | * | |
60c778b2 | 14 | * This SCTP implementation is free software; |
1da177e4 LT |
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 | * | |
60c778b2 | 20 | * This SCTP implementation is distributed in the hope that it |
1da177e4 LT |
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 | |
4b2f13a2 JK |
27 | * along with GNU CC; see the file COPYING. If not, see |
28 | * <http://www.gnu.org/licenses/>. | |
1da177e4 LT |
29 | * |
30 | * Please send any bug reports or fixes you make to the | |
31 | * email addresses: | |
91705c61 | 32 | * lksctp developers <linux-sctp@vger.kernel.org> |
1da177e4 | 33 | * |
1da177e4 LT |
34 | * Written or modified by: |
35 | * Jon Grimm <jgrimm@us.ibm.com> | |
36 | * La Monte H.P. Yarroll <piggy@acm.org> | |
37 | * Sridhar Samudrala <sri@us.ibm.com> | |
1da177e4 LT |
38 | */ |
39 | ||
40 | #ifndef __sctp_ulpqueue_h__ | |
41 | #define __sctp_ulpqueue_h__ | |
42 | ||
43 | /* A structure to carry information to the ULP (e.g. Sockets API) */ | |
44 | struct sctp_ulpq { | |
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45 | char pd_mode; |
46 | struct sctp_association *asoc; | |
47 | struct sk_buff_head reasm; | |
48 | struct sk_buff_head lobby; | |
49 | }; | |
50 | ||
51 | /* Prototypes. */ | |
52 | struct sctp_ulpq *sctp_ulpq_init(struct sctp_ulpq *, | |
53 | struct sctp_association *); | |
0b58a811 | 54 | void sctp_ulpq_flush(struct sctp_ulpq *ulpq); |
1da177e4 LT |
55 | void sctp_ulpq_free(struct sctp_ulpq *); |
56 | ||
57 | /* Add a new DATA chunk for processing. */ | |
dd0fc66f | 58 | int sctp_ulpq_tail_data(struct sctp_ulpq *, struct sctp_chunk *, gfp_t); |
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59 | |
60 | /* Add a new event for propagation to the ULP. */ | |
61 | int sctp_ulpq_tail_event(struct sctp_ulpq *, struct sctp_ulpevent *ev); | |
62 | ||
63 | /* Renege previously received chunks. */ | |
dd0fc66f | 64 | void sctp_ulpq_renege(struct sctp_ulpq *, struct sctp_chunk *, gfp_t); |
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65 | |
66 | /* Perform partial delivery. */ | |
b26ddd81 | 67 | void sctp_ulpq_partial_delivery(struct sctp_ulpq *, gfp_t); |
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68 | |
69 | /* Abort the partial delivery. */ | |
dd0fc66f | 70 | void sctp_ulpq_abort_pd(struct sctp_ulpq *, gfp_t); |
1da177e4 LT |
71 | |
72 | /* Clear the partial data delivery condition on this socket. */ | |
b6e1331f | 73 | int sctp_clear_pd(struct sock *sk, struct sctp_association *asoc); |
1da177e4 LT |
74 | |
75 | /* Skip over an SSN. */ | |
76 | void sctp_ulpq_skip(struct sctp_ulpq *ulpq, __u16 sid, __u16 ssn); | |
77 | ||
ea2dfb37 | 78 | void sctp_ulpq_reasm_flushtsn(struct sctp_ulpq *, __u32); |
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79 | #endif /* __sctp_ulpqueue_h__ */ |
80 | ||
81 | ||
82 | ||
83 | ||
84 | ||
85 | ||
86 |