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__ */ 88