mirror of
https://github.com/torvalds/linux.git
synced 2025-11-04 10:40:15 +02:00
132282386f
Unordered idata process is more complicated than unordered data: - It has to add mid into sctp_stream_out to save the next mid value, which is separated from ordered idata's. - To support pd for unordered idata, another mid and pd_mode need to be added to save the message id and pd state in sctp_stream_in. - To make unordered idata reasm easier, it adds a new event queue to save frags for idata. The patch mostly adds the samilar reasm functions for unordered idata as ordered idata's, and also adjusts some other codes on assign_mid, abort_pd and ulpevent_data for idata. Signed-off-by: Xin Long <lucien.xin@gmail.com> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
84 lines
2.9 KiB
C
84 lines
2.9 KiB
C
/* 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, see
|
|
* <http://www.gnu.org/licenses/>.
|
|
*
|
|
* 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. */
|
|
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);
|
|
|
|
__u16 sctp_ulpq_renege_list(struct sctp_ulpq *ulpq,
|
|
struct sk_buff_head *list, __u16 needed);
|
|
|
|
#endif /* __sctp_ulpqueue_h__ */
|