/* SCTP kernel implementation
* (C) Copyright IBM Corp. 2001, 2004
* Copyright (c) 1999-2000 Cisco, Inc.
* Copyright (c) 1999-2001 Motorola, Inc.
* Copyright (c) 2001 Intel Corp.
* Copyright (c) 2001 Nokia, Inc.
* Copyright (c) 2001 La Monte H.P. Yarroll
*
* These are the definitions needed for the sctp_ulpq type. The
* sctp_ulpq is the interface between the Upper Layer Protocol, or ULP,
* and the core SCTP state machine. This is the component which handles
* reassembly and ordering.
*
* This SCTP implementation is free software;
* you can redistribute it and/or modify it under the terms of
* the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This SCTP implementation is distributed in the hope that it
* will be useful, but WITHOUT ANY WARRANTY; without even the implied
* ************************
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU CC; see the file COPYING. If not, write to
* the Free Software Foundation, 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Please send any bug reports or fixes you make to the
* email addresses:
* lksctp developers <[email protected]>
*
* Written or modified by:
* Jon Grimm <[email protected]>
* La Monte H.P. Yarroll <[email protected]>
* Sridhar Samudrala <[email protected]>
*/

#ifndef __sctp_ulpqueue_h__
#define __sctp_ulpqueue_h__

/* A structure to carry information to the ULP (e.g. Sockets API) */
struct sctp_ulpq {
char pd_mode;
struct sctp_association *asoc;
struct sk_buff_head reasm;
struct sk_buff_head lobby;
};

/* Prototypes. */
struct sctp_ulpq *sctp_ulpq_init(struct sctp_ulpq *,
struct sctp_association *);
void sctp_ulpq_flush(struct sctp_ulpq *ulpq);
void sctp_ulpq_free(struct sctp_ulpq *);

/* Add a new DATA chunk for processing. */
int sctp_ulpq_tail_data(struct sctp_ulpq *, struct sctp_chunk *, gfp_t);

/* Add a new event for propagation to the ULP. */
int sctp_ulpq_tail_event(struct sctp_ulpq *, struct sctp_ulpevent *ev);

/* Renege previously received chunks. */
void sctp_ulpq_renege(struct sctp_ulpq *, struct sctp_chunk *, gfp_t);

/* Perform partial delivery. */
void sctp_ulpq_partial_delivery(struct sctp_ulpq *, gfp_t);

/* Abort the partial delivery. */
void sctp_ulpq_abort_pd(struct sctp_ulpq *, gfp_t);

/* Clear the partial data delivery condition on this socket. */
int sctp_clear_pd(struct sock *sk, struct sctp_association *asoc);

/* Skip over an SSN. */
void sctp_ulpq_skip(struct sctp_ulpq *ulpq, __u16 sid, __u16 ssn);

void sctp_ulpq_reasm_flushtsn(struct sctp_ulpq *, __u32);
#endif /* __sctp_ulpqueue_h__ */