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b6e1331f3c
This option was introduced in draft-ietf-tsvwg-sctpsocket-13. It prevents head-of-line blocking in the case of one-to-many endpoint. Applications enabling this option really must enable SCTP_SNDRCV event so that they would know where the data belongs. Based on an earlier patch by Ivan Skytte Jørgensen. Additionally, this functionality now permits multiple associations on the same endpoint to enter Partial Delivery. Applications should be extra careful, when using this functionality, to track EOR indicators. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
94 lines
3.1 KiB
C
94 lines
3.1 KiB
C
/* SCTP kernel reference Implementation
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* (C) Copyright IBM Corp. 2001, 2004
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* Copyright (c) 1999-2000 Cisco, Inc.
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* Copyright (c) 1999-2001 Motorola, Inc.
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* Copyright (c) 2001 Intel Corp.
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* Copyright (c) 2001 Nokia, Inc.
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* Copyright (c) 2001 La Monte H.P. Yarroll
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*
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* These are the definitions needed for the sctp_ulpq type. The
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* sctp_ulpq is the interface between the Upper Layer Protocol, or ULP,
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* and the core SCTP state machine. This is the component which handles
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* reassembly and ordering.
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*
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* The SCTP reference implementation is free software;
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* you can redistribute it and/or modify it under the terms of
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* the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* the SCTP reference implementation is distributed in the hope that it
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* will be useful, but WITHOUT ANY WARRANTY; without even the implied
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* ************************
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU CC; see the file COPYING. If not, write to
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* the Free Software Foundation, 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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* Please send any bug reports or fixes you make to the
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* email addresses:
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* lksctp developers <lksctp-developers@lists.sourceforge.net>
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*
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* Or submit a bug report through the following website:
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* http://www.sf.net/projects/lksctp
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*
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* Written or modified by:
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* Jon Grimm <jgrimm@us.ibm.com>
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* La Monte H.P. Yarroll <piggy@acm.org>
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* Sridhar Samudrala <sri@us.ibm.com>
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*
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* Any bugs reported given to us we will try to fix... any fixes shared will
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* be incorporated into the next SCTP release.
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*/
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#ifndef __sctp_ulpqueue_h__
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#define __sctp_ulpqueue_h__
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/* A structure to carry information to the ULP (e.g. Sockets API) */
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struct sctp_ulpq {
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char malloced;
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char pd_mode;
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struct sctp_association *asoc;
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struct sk_buff_head reasm;
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struct sk_buff_head lobby;
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};
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/* Prototypes. */
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struct sctp_ulpq *sctp_ulpq_init(struct sctp_ulpq *,
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struct sctp_association *);
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void sctp_ulpq_flush(struct sctp_ulpq *ulpq);
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void sctp_ulpq_free(struct sctp_ulpq *);
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/* Add a new DATA chunk for processing. */
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int sctp_ulpq_tail_data(struct sctp_ulpq *, struct sctp_chunk *, gfp_t);
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/* Add a new event for propagation to the ULP. */
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int sctp_ulpq_tail_event(struct sctp_ulpq *, struct sctp_ulpevent *ev);
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/* Renege previously received chunks. */
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void sctp_ulpq_renege(struct sctp_ulpq *, struct sctp_chunk *, gfp_t);
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/* Perform partial delivery. */
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void sctp_ulpq_partial_delivery(struct sctp_ulpq *, struct sctp_chunk *, gfp_t);
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/* Abort the partial delivery. */
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void sctp_ulpq_abort_pd(struct sctp_ulpq *, gfp_t);
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/* Clear the partial data delivery condition on this socket. */
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int sctp_clear_pd(struct sock *sk, struct sctp_association *asoc);
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/* Skip over an SSN. */
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void sctp_ulpq_skip(struct sctp_ulpq *ulpq, __u16 sid, __u16 ssn);
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#endif /* __sctp_ulpqueue_h__ */
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