/* SPDX-License-Identifier: GPL-2.0-or-later */
/* 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 .
*
* Please send any bug reports or fixes you make to the
* email addresses :
* lksctp developers < linux - sctp @ vger . kernel . org >
*
* Written or modified by :
* Jon Grimm < jgrimm @ us . ibm . com >
* La Monte H . P . Yarroll < piggy @ acm . org >
* Sridhar Samudrala < sri @ us . ibm . com >
*/
#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 reasm_uo;
struct sk_buff_head lobby;
};
/* Prototypes. */
void sctp_ulpq_init(struct sctp_ulpq *ulpq, struct sctp_association *asoc);
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 sk_buff_head *skb_list);
/* 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);
__u16 sctp_ulpq_renege_list(struct sctp_ulpq *ulpq,
struct sk_buff_head *list, __u16 needed);
#endif /* __sctp_ulpqueue_h__ */
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