160c778b2SVlad Yasevich /* SCTP kernel implementation 21da177e4SLinus Torvalds * (C) Copyright IBM Corp. 2001, 2004 31da177e4SLinus Torvalds * Copyright (c) 1999-2000 Cisco, Inc. 41da177e4SLinus Torvalds * Copyright (c) 1999-2001 Motorola, Inc. 51da177e4SLinus Torvalds * Copyright (c) 2001 Intel Corp. 61da177e4SLinus Torvalds * Copyright (c) 2001 Nokia, Inc. 71da177e4SLinus Torvalds * Copyright (c) 2001 La Monte H.P. Yarroll 81da177e4SLinus Torvalds * 91da177e4SLinus Torvalds * These are the definitions needed for the sctp_ulpq type. The 101da177e4SLinus Torvalds * sctp_ulpq is the interface between the Upper Layer Protocol, or ULP, 111da177e4SLinus Torvalds * and the core SCTP state machine. This is the component which handles 121da177e4SLinus Torvalds * reassembly and ordering. 131da177e4SLinus Torvalds * 1460c778b2SVlad Yasevich * This SCTP implementation is free software; 151da177e4SLinus Torvalds * you can redistribute it and/or modify it under the terms of 161da177e4SLinus Torvalds * the GNU General Public License as published by 171da177e4SLinus Torvalds * the Free Software Foundation; either version 2, or (at your option) 181da177e4SLinus Torvalds * any later version. 191da177e4SLinus Torvalds * 2060c778b2SVlad Yasevich * This SCTP implementation is distributed in the hope that it 211da177e4SLinus Torvalds * will be useful, but WITHOUT ANY WARRANTY; without even the implied 221da177e4SLinus Torvalds * ************************ 231da177e4SLinus Torvalds * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 241da177e4SLinus Torvalds * See the GNU General Public License for more details. 251da177e4SLinus Torvalds * 261da177e4SLinus Torvalds * You should have received a copy of the GNU General Public License 271da177e4SLinus Torvalds * along with GNU CC; see the file COPYING. If not, write to 281da177e4SLinus Torvalds * the Free Software Foundation, 59 Temple Place - Suite 330, 291da177e4SLinus Torvalds * Boston, MA 02111-1307, USA. 301da177e4SLinus Torvalds * 311da177e4SLinus Torvalds * Please send any bug reports or fixes you make to the 321da177e4SLinus Torvalds * email addresses: 331da177e4SLinus Torvalds * lksctp developers <lksctp-developers@lists.sourceforge.net> 341da177e4SLinus Torvalds * 351da177e4SLinus Torvalds * Or submit a bug report through the following website: 361da177e4SLinus Torvalds * http://www.sf.net/projects/lksctp 371da177e4SLinus Torvalds * 381da177e4SLinus Torvalds * Written or modified by: 391da177e4SLinus Torvalds * Jon Grimm <jgrimm@us.ibm.com> 401da177e4SLinus Torvalds * La Monte H.P. Yarroll <piggy@acm.org> 411da177e4SLinus Torvalds * Sridhar Samudrala <sri@us.ibm.com> 421da177e4SLinus Torvalds * 431da177e4SLinus Torvalds * Any bugs reported given to us we will try to fix... any fixes shared will 441da177e4SLinus Torvalds * be incorporated into the next SCTP release. 451da177e4SLinus Torvalds */ 461da177e4SLinus Torvalds 471da177e4SLinus Torvalds #ifndef __sctp_ulpqueue_h__ 481da177e4SLinus Torvalds #define __sctp_ulpqueue_h__ 491da177e4SLinus Torvalds 501da177e4SLinus Torvalds /* A structure to carry information to the ULP (e.g. Sockets API) */ 511da177e4SLinus Torvalds struct sctp_ulpq { 521da177e4SLinus Torvalds char malloced; 531da177e4SLinus Torvalds char pd_mode; 541da177e4SLinus Torvalds struct sctp_association *asoc; 551da177e4SLinus Torvalds struct sk_buff_head reasm; 561da177e4SLinus Torvalds struct sk_buff_head lobby; 571da177e4SLinus Torvalds }; 581da177e4SLinus Torvalds 591da177e4SLinus Torvalds /* Prototypes. */ 601da177e4SLinus Torvalds struct sctp_ulpq *sctp_ulpq_init(struct sctp_ulpq *, 611da177e4SLinus Torvalds struct sctp_association *); 620b58a811SVlad Yasevich void sctp_ulpq_flush(struct sctp_ulpq *ulpq); 631da177e4SLinus Torvalds void sctp_ulpq_free(struct sctp_ulpq *); 641da177e4SLinus Torvalds 651da177e4SLinus Torvalds /* Add a new DATA chunk for processing. */ 66dd0fc66fSAl Viro int sctp_ulpq_tail_data(struct sctp_ulpq *, struct sctp_chunk *, gfp_t); 671da177e4SLinus Torvalds 681da177e4SLinus Torvalds /* Add a new event for propagation to the ULP. */ 691da177e4SLinus Torvalds int sctp_ulpq_tail_event(struct sctp_ulpq *, struct sctp_ulpevent *ev); 701da177e4SLinus Torvalds 711da177e4SLinus Torvalds /* Renege previously received chunks. */ 72dd0fc66fSAl Viro void sctp_ulpq_renege(struct sctp_ulpq *, struct sctp_chunk *, gfp_t); 731da177e4SLinus Torvalds 741da177e4SLinus Torvalds /* Perform partial delivery. */ 75dd0fc66fSAl Viro void sctp_ulpq_partial_delivery(struct sctp_ulpq *, struct sctp_chunk *, gfp_t); 761da177e4SLinus Torvalds 771da177e4SLinus Torvalds /* Abort the partial delivery. */ 78dd0fc66fSAl Viro void sctp_ulpq_abort_pd(struct sctp_ulpq *, gfp_t); 791da177e4SLinus Torvalds 801da177e4SLinus Torvalds /* Clear the partial data delivery condition on this socket. */ 81b6e1331fSVlad Yasevich int sctp_clear_pd(struct sock *sk, struct sctp_association *asoc); 821da177e4SLinus Torvalds 831da177e4SLinus Torvalds /* Skip over an SSN. */ 841da177e4SLinus Torvalds void sctp_ulpq_skip(struct sctp_ulpq *ulpq, __u16 sid, __u16 ssn); 851da177e4SLinus Torvalds 86ea2dfb37SVlad Yasevich void sctp_ulpq_reasm_flushtsn(struct sctp_ulpq *, __u32); 871da177e4SLinus Torvalds #endif /* __sctp_ulpqueue_h__ */ 881da177e4SLinus Torvalds 891da177e4SLinus Torvalds 901da177e4SLinus Torvalds 911da177e4SLinus Torvalds 921da177e4SLinus Torvalds 931da177e4SLinus Torvalds 941da177e4SLinus Torvalds 95