70 строки
2.2 KiB
C
70 строки
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/* SCTP kernel 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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* Please send any bug reports or fixes you make to the
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* email addresses:
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* lksctp developers <linux-sctp@vger.kernel.org>
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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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#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 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 reasm_uo;
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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 sk_buff_head *skb_list);
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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 *, 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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void sctp_ulpq_reasm_flushtsn(struct sctp_ulpq *, __u32);
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__u16 sctp_ulpq_renege_list(struct sctp_ulpq *ulpq,
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struct sk_buff_head *list, __u16 needed);
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#endif /* __sctp_ulpqueue_h__ */
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